JPH1027691A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make illumination intensity arbitrarily variable in a work surface while obtaining a particular effect of eye catch effect or the like. SOLUTION: Three sets of lighting equipments 10a1 to 10a3 , having three light sources 11a1 to 11a3 , and a control part 1 lighting each light source 11a1 , 11a3 to change luminous energy thereof are provided. In the control part 1, a zero cross point of an AC power source AC is detected by a zero cross detection part 3, a turn on phase of switching elements Qa to Qc comprising a TRI AC is controlled by a trigger signal from a control circuit part 4. The control circuit part 4, in accordance with a luminous energy change pattern monotonically periodically changed between upper/lower limit values, changes luminous energy of each light source 11a1 , 11a3 while delayed by each delay time. By changing these upper/lower limit values in the control circuit part 4, while holding a particular effect of eye catch effect or the like left as it is, illumination intensity in a work surface can be made arbitrarily variable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device for monotonously and periodically changing the light amounts of a plurality of light sources.

[0002]

2. Description of the Related Art Conventionally, there has been known an illumination device which has a so-called eye-catching effect of attracting a person's attention by varying light amounts of a plurality of light sources, and a special effect of giving a sense of security to a viewer visually. Provided. For example, it comprises a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the light amount of each light source, wherein the control means determines that at least one of the plurality of light sources has a light amount. The lighting means is controlled so that the light amount changes according to a light amount change pattern that is monotonously and periodically changed between two light amounts of the upper limit value and the lower limit value, and at least one other light source is sequentially delayed at predetermined time intervals. There is a lighting device that controls the lighting means so that the light amount changes according to the light amount change pattern, thereby achieving the above-described eye catch effect.

[0003]

However, in the above-mentioned conventional lighting apparatus, when the lighting device is used as a main lighting device for illuminating a work surface on which a user performs work such as work or reading, the illuminance on the work surface and the illuminance on the work surface are reduced. There has been a problem that the total amount of light from a plurality of light sources cannot be changed. SUMMARY OF THE INVENTION An object of the present invention is to provide a lighting device capable of arbitrarily varying illuminance on a work surface while obtaining a special effect such as an eye catch effect. .

[0004]

According to a first aspect of the present invention, a plurality of light sources, a lighting unit for lighting these light sources, and a lighting unit for controlling the lighting units to reduce the amount of light of each light source. Control means for changing the light amount in accordance with a light amount change pattern in which at least one of the plurality of light sources monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount. A lighting device that controls the lighting means so that the light amount changes in accordance with the light amount change pattern with at least one other light source sequentially delayed at predetermined time intervals. It is characterized by having a variable means for varying the illuminance on the surface, and arbitrarily varying the illuminance on the work surface by the variable means while obtaining a special effect such as an eye catch effect. It can be.

According to a second aspect of the present invention, in order to achieve the above object, there are provided a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the light amount of each light source. , The control means includes at least one of the plurality of light sources.
One light source controls the lighting means so that the light amount changes according to a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount, and the other at least one light source is operated for a predetermined time. In a lighting device that controls lighting means so that the light amount changes in accordance with the light amount change pattern in sequence with a delay in each case, a first lighting mode in which each light source is turned on in accordance with the light amount change pattern, and a substantially constant light mode regardless of the light amount change pattern A switching means for switching between a second lighting mode in which the light source is turned on by the light amount is provided, and the lighting mode can be appropriately switched by the switching means while obtaining a special effect such as an eye catch effect.

According to a third aspect of the present invention, in order to achieve the above object, there are provided a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the light amount of each light source. , The control means includes at least one of the plurality of light sources.
One light source controls the lighting means so that the light amount changes according to a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount, and the other at least one light source is operated for a predetermined time. In a lighting device that controls lighting means so that the light amount changes in accordance with the light amount change pattern in sequence with a delay in each case, a first lighting mode in which each light source is turned on in accordance with the light amount change pattern, and a substantially constant light mode regardless of the light amount change pattern An eye-catching effect, comprising: a switching variable unit that switches between a second lighting mode in which a light source is turned on by a light amount and illuminance on a work surface illuminated by a plurality of light sources when the lighting mode is switched. Switching the lighting mode as appropriate and changing the illuminance on the work surface arbitrarily while obtaining special effects such as It can be.

According to a fourth aspect of the present invention, in the first or third aspect of the invention, when the illuminance on the work surface is changed, the control means controls the ratio of the lower limit value to the upper limit value of the light amount change pattern before and after the change. Is characterized by controlling the lighting means to be substantially equal, before and after the operation of changing the illuminance on the work surface, the width of the brightness of the light with respect to the entire light amount does not change, for those who see the light source, The work surface illuminance can be changed without giving a sense of incongruity to the flickering appearance of light.

According to a fifth aspect of the present invention, in the first or third aspect, when the illuminance on the work surface is changed, the ratio of the lower limit value to the upper limit value of the light amount change pattern after the change is changed. The lighting means is controlled so as to be smaller than the ratio of the lower limit value to the upper limit value of the light amount change pattern before the change, and the change width between the upper limit value and the lower limit value before and after changing the work surface illuminance increases. The work surface illuminance is changed so that the width of light intensity relative to the total light amount is greater after the change in the work surface illuminance than before the change in the work surface illuminance, and the apparent fluctuation of light to the viewer of the light source becomes stronger. be able to.

According to a sixth aspect of the present invention, in the first or the third aspect of the present invention, when the illuminance on the work surface is changed, the control means sets the ratio of the lower limit value to the upper limit value of the light amount change pattern after the change. The lighting means is controlled so as to be larger than the ratio of the lower limit value to the upper limit value of the light amount change pattern before the change, and the change width between the upper limit value and the lower limit value before and after changing the work surface illuminance is reduced. Changing the work surface illuminance so that the width of the light intensity relative to the total light amount is smaller after the change in the work surface illuminance than before the change in the work surface illuminance, and the light flickering feeling for the viewer of the light source is suppressed. Can be.

According to a seventh aspect of the present invention, in the first aspect of the invention, when the illuminance on the work surface is changed, the control means changes only the upper limit value of the light amount change pattern before and after the change and sets the lower limit value. Is characterized by controlling the lighting means so that is substantially constant, since the maximum value of the amount of light emitted by each light source is kept substantially constant before and after the change of the work surface illuminance, even after the change of the work surface illuminance Thus, the illuminance on the work surface can be changed without significantly changing the impression of the apparent brightness of the lighting.

According to an eighth aspect of the present invention, in the first aspect of the invention, when the illuminance on the work surface is changed, the control means changes only the lower limit value of the light amount change pattern before and after the change and sets the upper limit value. Is characterized by controlling the lighting means so that is substantially constant, since the minimum value of the amount of light emitted by each light source is maintained substantially constant before and after the change of the work surface illuminance, even after the change of the work surface illuminance In addition, it is possible to change the impression of the apparent brightness of the lighting without greatly changing the illuminance of the work surface.

According to a ninth aspect of the present invention, in the first aspect of the present invention, when the illuminance on the work surface is varied, the control means sets the light amount change pattern between the upper limit value and the lower limit value before and after the change. The lighting means is controlled so that the change width is substantially constant, and before and after the operation of changing the work surface illuminance, the change width between the upper limit value and the lower limit value is kept equal, so that the work surface illuminance is Even if is changed, the apparent absolute flicker of light does not change before and after the change in the illuminance of the work surface, and can be maintained.

According to a tenth aspect of the present invention, in the first aspect of the present invention, the variable means varies the illuminance on the work surface by controlling the lighting means to change the light amount change pattern. Give the viewer a light source every time you change
The effect can be changed by changing the eye-catching effect, which is called gorgeous or gorgeous. According to an eleventh aspect of the present invention, in the first aspect of the present invention, the variable means is configured to determine the number of light sources that are lit at an upper limit light amount and the number of light sources that are lit at a lower limit light amount at any time among a plurality of light sources. It is characterized in that the illuminance on the work surface is varied by making the ratio different, and it is possible to maintain the degree of fluctuation before and after the change in the illuminance on the work surface, and to produce an effect such that the illuminance on the work surface is changed stepwise.

According to a twelfth aspect of the present invention, in the first aspect of the present invention, the variable means inverts the time of lighting at the upper limit light amount and the time of lighting at the lower limit light amount in the light amount change pattern. Thus, even if the illuminance on the work surface is darkened, the degree of fluctuation can be maintained as it is, and an effect can be provided that has an impact on the flicker of light.

According to a thirteenth aspect of the present invention, in the first aspect of the present invention, the variable means varies the illuminance on the work surface over a predetermined transition time. According to a fourteenth aspect, in the second aspect, the switching means switches the lighting mode over a predetermined transition time. According to a fifteenth aspect of the present invention, in the third aspect of the invention, the switching variable means switches the lighting mode over a predetermined transition time, and changes the illuminance on the work surface when the lighting mode is switched. .

The invention of claim 16 is the invention of claim 13 or 14
Alternatively, in the invention according to the fifteenth aspect, the control means controls the lighting means such that the light amount of each light source changes at a substantially constant rate within the transition time. According to a seventeenth aspect, in the thirteenth, fourteenth, or fifteenth aspect, the control means maintains the fade time required for the light amount of each light source to change between the upper limit value and the lower limit value in the light amount change pattern. It is characterized by controlling the lighting means so that the light amount of each light source within the transition time, even during the transition time, the periodic change in the light amount of each light source is continued,
Such a change in light amount does not suddenly break or change, the transition operation is performed naturally, and the illuminance and lighting pattern on the work surface are changed without giving a stranger to the viewer of the light source be able to.

The invention of claim 18 is the invention of claim 13 or 14
Alternatively, in the invention according to the fifteenth aspect, the control unit may connect the upper limit value and the lower limit value of the light amount change of each light source within the transition time to the upper limit value before the change of each light source and the target light amount after the change. The lighting means is controlled so as to be on a straight line, and on a straight line connecting a lower limit value before the change and a target light amount after the change, and a transition operation accompanying the switching is naturally performed. In addition, the viewer of the light source does not feel strange.

According to a nineteenth aspect of the present invention, in the eighteenth aspect of the invention, the control means determines that the illuminance on the work surface is substantially constant before and after the switching operation and during the transition time when the lighting mode is switched by the switching means. It is characterized by controlling the lighting means so that the illuminance on the work surface is always substantially constant over time before and after the switching of the lighting mode and during the transition time between the lighting modes, and the lighting mode is not noticed by the person under illumination Can be switched.

[0019] The invention of claim 20 is the invention of claim 13 or 14.
Alternatively, in the invention according to the fifteenth aspect, the control means controls the lighting means such that the upper limit value and the lower limit value of the light amount change of each light source within the transition time change at a predetermined ratio at predetermined intervals. Since the change of the light amount of each light source is continued even within the time, the change of the light amount is not suddenly interrupted or changed, so that the transition operation accompanying the change of the work surface illuminance is natural, and The work surface illuminance can be changed without giving the viewer a sense of incongruity.

The invention of claim 21 is the invention of claim 13 or 14
Alternatively, in the invention according to the fifteenth aspect, the switching means sets a change width between an upper limit value and a lower limit value in a fade when the light amount of each light source changes between the upper limit value and the lower limit value in the light amount change pattern for each light source within the transition time. The lighting mode is switched by sequentially changing the lighting mode at a predetermined rate, and the light amount of each light source is continuously changed even within the transition time accompanying the switching, and the change in the light amount is suddenly interrupted or changed. Therefore, the switching operation of the lighting mode is naturally performed, and the viewer of the light source does not feel uncomfortable.

According to a twenty-second aspect of the present invention, in the twenty-first aspect of the present invention, the control means determines that the illuminance on the work surface is substantially constant before and after the switching and during the transition time when the lighting mode is switched by the switching means. It is characterized by controlling the lighting means so that the lighting mode can be switched without changing the illuminance on the work surface, and the switching of the lighting mode can be performed without making the person under the lighting aware. it can.

The invention of claim 23 is the invention of claim 13 or 14
Alternatively, in the invention according to the fifteenth aspect, the control means controls the lighting means so that the illuminance on the work surface within the transition time changes at a predetermined rate. According to a twenty-fourth aspect of the present invention, in the thirteenth, fourteenth, or fifteenth aspect, there is provided a setting means capable of setting the transition time to an arbitrary value, and the control means controls each of the transition times within the transition time according to the set transition time. The method is characterized in that the method of changing the light amount of the light source is changed, and the user can set the transition time so as to change the illuminance on the work surface, or to change the lighting mode, and so on. Can be selected.

According to a twenty-fifth aspect of the present invention, in the twenty-fourth aspect, there is provided threshold value setting means for setting a threshold value to be compared with the transition time set by the setting means, and the control means comprises a setting means. Characterized in that the method of changing the light amount of each light source within the transition time is changed based on the result of comparing the transition time set in with the predetermined threshold set by the threshold setting means, It is also possible to change the lighting effect depending on the use condition and use environment of the lighting device, or on the preference of the user, and the use of such a lighting device is expanded.

According to a twenty-sixth aspect of the present invention, in accordance with the first, second, or third aspect of the present invention, there is provided a light source having a plurality of light colors different from each other, Characterized in that the lighting means is controlled such that the ratio of the total amount of light is substantially equal for each light source.
Since the light source of each light color is changed at the same ratio when changing the work surface illuminance, the entire light color does not change before and after the change of the work surface illuminance and the change of the lighting mode,
A person under illumination does not feel uncomfortable due to a change in light color on the work surface.

According to a twenty-seventh aspect of the present invention, in accordance with the first, second, or third aspect of the present invention, a light source having a plurality of light colors different from each other is provided, The lighting means is controlled so that the light color on the work surface is substantially constant, and the entire light color does not change before and after the change in the illuminance of the work surface or the change in the lighting mode, and is under illumination. The user does not feel uncomfortable due to the change in light color on the work surface.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 is a block diagram showing a first embodiment of the present invention. Lighting apparatus of this embodiment, the light source 11a ₁ ~11c ₁ such as an incandescent lamp, 11a ₂ ~11c
_2, 11a ₃ 3 comprising ～11C ₃ one by three respectively
Control the luminaire 10 ₁ to 10 ₃ of the table, to change the AC power source and inserted and the luminaire 10 ₁ ... each light source 11a ₁ ... amount of between luminaire 10 ₁ to 10 _3, such as a commercial power source 1. Here, the luminaire 10 ₁ to 10 ₃ in the present embodiment, for example, a lighting fixture so-called chandelier type, controlled by a control unit 1 which is disposed to or or elsewhere internal to the instrument body (such as a wall) Is done.

The control unit 1 converts the AC voltage from the AC power supply AC into a predetermined DC voltage and supplies it to each unit.
A zero-crossing detecting unit 3 for detecting a zero-crossing point of an AC voltage, a control circuit unit 4 comprising a microcomputer and constituting a control unit, and switching elements Qa to Qc comprising a triac and constituting a lighting unit. I have. The light source 11 included in each of the lighting fixtures 10 ₁ to 10 ₃
a ₁ , 11a ₂ , 11a ₃ ,... are connected in parallel with each other, and are connected to an AC power source A via a switching element Qa.
It is connected to both ends of C.

The zero-cross detecting unit 3 is provided with an AC power supply AC.
And outputs a detection signal to the control circuit unit 4. Upon receiving the detection signal from the zero-crossing detection unit 3, the control circuit unit 4
output a dimming signal (trigger signal) to a to Qc to turn on the switching elements Qa to turn on the light sources 11a ₁ ... Then, the switching element Q
a ... turns off. That is, the control circuit unit 4 repeats the above-described operation to switch the switching elements
The light source 11 is controlled by controlling the phase in which the light source 11 is turned on.
The so-called phase control for changing the light amount of a ₁ .

The control circuit section 4 changes the light amounts of the light sources 11a ₁ ... According to a light amount change pattern set in advance. This light amount change pattern is created so as to monotonously and periodically change between two light amounts of an upper limit value UL and a lower limit value LL as shown in FIG. 2, and a period T thereof is determined by the following equation 1. ing. Incidentally, t _f is the time required to fade out to lower the fade in or upper limit UL increase the amount of light from the lower limit LL to the upper limit UL to the lower limit LL (hereinafter. Referred to as "fade time") represents.

T = 2t _f × the total number of light sources per lighting device (Equation 1) Further, the light sources 11a ₁ are continuously lit at the upper limit value UL of the light amount (hereinafter, referred to as “upper limit continuous lighting”). When the time and the time of continuous lighting at the lower limit value LL of the light amount (hereinafter, referred to as “lower limit continuous lighting”) are set to the upper limit continuous lighting time t _H and the lower limit continuous lighting time t _L , respectively, at the same time, Using the number of light sources 11a _1, which are continuously lit at the upper limit (the number of light sources lit continuously at the upper limit) and the number of light sources 11c _1, which are continuously lit at the same time at the same time (the number of continuously lit light sources at the lower limit), And Equation 3.

T _H = T × (upper limit number of continuously lit light sources / total number of light sources per lighting fixture) −t _f (Equation 2) t _L = T × (lower limit continuously lit light source number / per lighting fixture) in the case of the total number of light sources) -t _f ... (equation 3) in the present embodiment, the light source 11a ₁ ... number of all light sources per one luminaire 10 ₁ to 10 ₃ 3, upper continuous lighting source number Is 2, and the lower limit continuous lighting light source number is 1.
From the above equations 1 to 3, the cycle T, the upper limit continuous lighting time t _H, and the lower limit continuous lighting time t _L are obtained as follows.

[0032] _{T = 6 × t f t H} = 3 × t f t L = t f Further, the light source 11 to the luminaire 10 ₁ to 10 ₃ is provided
a ₁ ... light source 11a ₁ which is connected to the switching element Qa among, 11a _2, 11a ₃ in the pattern shown in FIG. 2 (a), the light source 11b that is connected to the switching element Qb
₁ , 11b ₂ and 11b ₃ have the pattern shown in FIG.
The control circuit unit 4 outputs a dimming signal (trigger signal) to each of the switching elements Qa to Qc so that c ₁ , 11c ₂ , and 11c ₃ change the light amount in the pattern shown in FIG. I do. At this time, the control circuit unit 4 outputs the same dimming signal to each of the switching elements Qa~Qc while delaying by two times the delay time t _d of the fade time t _f (FIG. (A) ~ (c) refer) . That is, outputs a dimming signal to the switching element Qa, after the delay time t _d has elapsed from the start of the fade-in of the light source 11a ₁ from the lower limit LL to the upper limit UL, 11a _2, 11a _3, the switching element Qb The light source 11 outputs exactly the same dimming signal and
b ₁ , 11b ₂ , and 11b ₃ start to fade in, and after a lapse of a delay time t _d from there, the switching element Q
c to output the same dimming signal to the light sources 11c ₁ and 11c.
c _2, and a fade-11c ₃ is started.

As described above, by controlling the plurality of light sources 11a ₁ ... Sequentially according to the same light amount change pattern by the delay time t _d , the light amount of the entire illuminating device can be made substantially constant at all times. As a result, FIG.
As shown in (d), even when used for the main illumination, the illuminance on the work surface becomes substantially constant irrespective of a change in the light amount of each light source 11a ₁ . Can be prevented. Moreover, each lighting fixture 10a
10c are periodically changed while interlocking with the light amounts of the light sources 11a ₁ ..., Respectively, so that a person watching the light sources 11a ₁ . it can.

Next, the point of changing the work surface illuminance, which is the gist of the present invention, will be described. In the following description, the amount of light is represented by a numerical value with the amount of light at the time of rated lighting of the light sources 11a ₁ . For example, when each of the light sources 11a ₁ ... Is turned on according to the light amount change pattern as described above, the upper limit value UL in the light amount change pattern is set.
And the lower limit LL, respectively, from 100% to 50%, 40%
% To 20%, the control circuit unit 4 switches the light sources 11a ₁ . Dimming signal (trigger signal) to elements Qa to Qc
Is output to perform phase control.

That is, the light sources 11a ₁ , 11a ₂ , 11a ₃ , 11b ₁ , 11 which are lit at the upper limit UL (= 100%) at the time t ₀ when the work surface illuminance starts decreasing.
For b ₂ and 11b ₃ , the control circuit unit 4 as a variable means
Controls the phase of the switching elements Qa to Qc, which are lighting means, so that a predetermined transition time t _T is spent and fades out linearly, and a new upper limit value UL ′ (= 50) is obtained.
%), And at the time t _{0 the} light sources 11c ₁ , 11c ₁ , which are lit at the lower limit LL (= 40%)
For 11c ₂ and 11c ₃ , the same transition time t _T is used to fade out linearly, and the light amount is reduced to a new lower limit LL ′ (= 20%). Also,
After changing the upper limit value UL 'and the lower limit LL' is also periodically changed subsequently with interlocking source 11a ₁ ... amount of each luminaire 10a~10c respectively. Therefore, even after the upper limit value UL 'and the lower limit value LL' are reduced as shown in FIG. 3D, the work surface illuminance is kept substantially constant.

In the present embodiment, when the illuminance of the work surface is changed as described above, the light sources 11a are controlled so that the ratio between the upper limit value UL, UL 'and the lower limit value LL, LL' before and after the change becomes equal. _The light amount change pattern for ₁ ... is changed. That is, in the case of the present embodiment, the ratio between the upper limit value UL and the lower limit value LL before the change is 5: 2, and the ratio between the upper limit value UL 'and the lower limit value LL' after the change is also 5: 2.
.. Are output from the control circuit unit 4 to the light sources 11a ₁ . Thus, before and after the operation of changing the work surface illuminance, the lighting fixtures 10a.
Without the width of the brightness of light varies before and after the change to the overall amount of time viewed overall, to those who see the luminaire 10a ..., discomfort to flickering feeling of appearance of the light source 11a ₁ ... optical There is an advantage that the illuminance on the work surface can be changed without any change. In this embodiment, the case where the work surface illuminance is reduced has been described. However, it is needless to say that the work surface illuminance can be increased. Further, the light amount does not necessarily need to be linearly faded at the transition time t _T , and can be set in any manner.

In this embodiment, the three light sources 11a ₁
Are provided with three lighting fixtures 10a to 10c having a total number of light sources of 3, a maximum number of continuous lighting sources of 2 and a minimum number of continuous lighting sources of 1; And the number of light sources provided in one lighting fixture 10a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited thereto, and any number can be selected. In other words, the total light source number is set to two or more, and the light amount change patterns are different according to the above-described equations (1) to (3), depending on how the upper-limit continuously-lit light source number and the lower-limit continuously-lit light source number are allocated. Further, these settings can be changed even while the light sources 11a ₁ ... Are turned on, and the fade time t _f can be freely selected. Even if the fade time t _f is changed, the light amount change pattern itself is not changed. Although it does not change, the effect obtained thereby differs.

In general, if the upper limit number of continuously lit light sources is set to be larger than the lower limit number of continuously lit light sources with respect to the total number of light sources, the light amount of the entire lighting device can be increased, and it is sufficient even when used as main lighting. Illuminance can be obtained, and the room can be brightly illuminated. In addition, if the upper limit continuous lighting source number is set to be smaller than the lower limit continuous lighting source number with respect to the total number of light sources, it is possible to produce a flickering light having an impact, and further enhance the eye catching effect for a viewer of the lighting. There is an advantage that can be.

It is also possible to change the order of the light sources 11a ₁ to be turned on in each of the lighting devices 10a. Further, regarding the configuration of the control unit 1, each lighting fixture 1
The configuration of the present embodiment is not limited as long as it is possible to control the light amount of each of the light sources 11a ₁ . Also, the lighting fixtures 10a are not limited to the chandelier type of the present embodiment, and any type of lighting fixture may be used as long as it has a plurality of light sources. Further, in the present embodiment, the light sources 11a ₁ .
Although a light bulb such as an incandescent lamp is used, it goes without saying that a light source other than a light bulb such as a fluorescent lamp (a straight tube type, a so-called compact type, a ring type, etc.) may be used. Also, the creation of the light quantity change pattern using the above-described equations 1 to 3 is an example, and it is possible to create the light quantity change pattern without depending on these equations 1 to 3.

(Embodiment 2) In this embodiment, unlike the first embodiment, the ratio of the lower limit value LL to the upper limit value UL becomes smaller before and after the change of the work surface illuminance, unlike the first embodiment. Then, the control circuit unit 4 outputs a dimming signal to the switching elements Qa to Qc to output the light sources 11a ₁
Is characterized in that the amount of light is changed.

For example, as shown in FIG. 4, when each of the light sources 11a ₁ ...
L and the lower limit LL, respectively, from 100% to 70%,
When the control circuit unit 4 reduces the light amount from 0% to 20%, the control circuit unit 4 changes the light amount of each of the light sources 11a ₁ . Thus, the phase of the switching elements Qa to Qc is controlled.

That is, when the work surface illuminance starts to decrease.
Time t₀At the upper limit value UL (= 100%)
Light source 11a₁, 11a_Two, 11a_Three, 11b₁, 11
b_Two, 11b_ThreeFor a predetermined transition time t_TSpend
And fade out linearly to create a new upper limit UL '
(= 70%) and the time t ₀
Light source 1 lit at the lower limit LL (= 40%)
1c₁, 11c_Two, 11c_ThreeAbout the same
Transition time t_TTo fade out linearly
Reduce the light amount to the new lower limit LL '(= 20%)
You. Also, after changing the upper limit value UL 'and the lower limit value LL',
Continuously, the light source 11a of each lighting fixture 10a to 10c₁The amount of light
Are periodically changed in conjunction with each other. did
Accordingly, as shown in FIG.
Even after reducing the value LL ', the work surface
It will be kept almost constant at the lower level.

In the present embodiment, when the illuminance on the work surface is changed as described above, the light sources 11a are arranged such that the ratio of the lower limit values LL and LL 'to the upper limit values UL and UL' before and after the change is reduced. _The light amount change pattern for ₁ ... is changed. That is, in the case of the present embodiment, the ratio of the lower limit LL to the upper limit UL before the change is 2/5, and the upper limit UL ′ after the change and the lower limit L
The control circuit unit 4 outputs a dimming signal to each of the light sources 11a ₁ ... So that the ratio of L ′ becomes two-seventh, thereby performing phase control. As a result, before and after the work surface illuminance is changed, the range of change B (= UL−UL ′), B ′ (= LL−LL ′) between the upper limit value UL, UL ′ and the lower limit value LL, LL ′ increases. When the entire illumination is viewed, the width of light brightness relative to the total light amount is greater after the change in illuminance on the work surface than before. Accordingly, the work surface illuminance can be changed so that the light (a user) who looks at the illumination has a strong flickering appearance. In other words, the present embodiment is effective in a case where it is desired to produce an effect in which a flickering feeling is pushed to the front such that a strong eye-catching effect is given to a person viewing the illumination even when the work surface illuminance is relatively dark. .

As an extreme example, as shown in FIG. 5, when the illuminance of the work surface is changed, only the lower limit value LL 'is changed, and the upper limit value UL' is the same value (UL) before and after the change of the work surface illuminance. = UL ′) may be controlled so that the light amount of each light source 11a ₁ . In this case, the same effect as described above is achieved, and the maximum value of the amount of light emitted from each of the light sources 11a ₁ is kept substantially constant before and after the change in the work surface illuminance. There is an advantage that the illuminance on the work surface can be changed without much changing the impression of the apparent brightness of the lighting. In other words, it is particularly effective when it is desired to change the illuminance on the work surface so that the viewer does not notice the viewer.

In this embodiment, the work surface illuminance is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Embodiment 3) In the present embodiment, in the same configuration as Embodiment 1, contrary to Embodiment 2, the ratio of the lower limit LL to the upper limit UL increases before and after the change of the work surface illuminance. As described above, the control circuit section 4 outputs a dimming signal to the switching elements Qa to Qc to output the light sources 11a ₁ .
Is characterized in that the light amount of the light is changed.

For example, as shown in FIG. 6, when each of the light sources 11a ₁ ...
L and the lower limit LL, respectively, from 100% to 50%,
When the light amount is reduced from 0% to 30%, the control circuit unit 4 changes the light amount of each of the light sources 11a ₁ . Thus, the phase of the switching elements Qa to Qc is controlled.

That is, when the work surface illuminance starts to decrease.
Time t₀At the upper limit value UL (= 100%)
Light source 11a₁, 11a_Two, 11a_Three, 11b₁, 11
b_Two, 11b_ThreeFor a predetermined transition time t_TSpend
And fade out linearly to create a new upper limit UL '
(= 50%), and at time t ₀
Light source 1 lit at the lower limit LL (= 40%)
1c₁, 11c_Two, 11c_ThreeAbout the same
Transition time t_TTo fade out linearly
Reduce the light amount to a new lower limit LL '(= 30%)
You. Also, after changing the upper limit value UL 'and the lower limit value LL',
Continuously, the light source 11a of each lighting fixture 10a to 10c₁The amount of light
Are periodically changed in conjunction with each other. did
As a result, as shown in FIG.
Even after reducing the value LL ', the work surface
It will be kept almost constant at the lower level.

In this embodiment, when the illuminance of the work surface is changed as described above, each light source 11a is set so that the ratio of the lower limit LL, LL 'to the upper limit UL, UL' before and after the change is increased. _The light amount change pattern for ₁ ... is changed. That is, in the case of the present embodiment, the ratio of the lower limit LL to the upper limit UL before the change is 2/5, and the upper limit UL ′ after the change and the lower limit L
The control circuit unit 4 outputs a dimming signal to each of the light sources 11a ₁ ... So that the ratio of L ′ becomes 3/5, thereby performing phase control. As a result, before and after the work surface illuminance is changed, the width of change B (= UL−UL ′), B ′ (= LL−LL ′) between the upper limit value UL, UL ′ and the lower limit value LL, LL ′ decreases. In contrast, when the entire illumination is viewed, the width of the brightness of the light with respect to the entire light amount is smaller after the change in the illuminance on the work surface than before. Therefore, the work surface illuminance can be changed so as to suppress the apparent flickering of light to a person (user) who views the illumination. That is, the present embodiment is generally effective when it is desired to perform an effect with a reduced sense of fluctuation when the work surface illuminance is relatively dark.

As an extreme example, as shown in FIG. 7, when the work surface illuminance is changed, only the upper limit value UL 'is changed, and the lower limit value LL' is the same value (LL) before and after the change of the work surface illuminance. = LL ') may be controlled so that the light amounts of the light sources 11a ₁ ... are controlled. In this case as well, the same effect as described above is achieved, and the minimum value of the amount of light emitted from each of the light sources 11a ₁ is kept substantially constant before and after the change in the work surface illuminance. There is an advantage that the visual impression of the illumination can be changed without greatly changing the work surface illuminance. In other words, this is particularly effective when it is desired to change only the visual impression of the illumination without changing the illuminance of the work surface much.

In this embodiment, the work surface illuminance is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Embodiment 4) In this embodiment, in the same configuration as that of Embodiment 1, the change width B between the upper limit value UL and the lower limit value LL is equal before and after the change of the work surface illuminance.
It is characterized in that the control circuit unit 4 outputs a dimming signal to the switching elements Qa to Qc to change the light amount of each of the light sources 11a ₁ .

For example, as shown in FIG. 8, when each of the light sources 11a ₁ ...
L and the lower limit LL, respectively, from 100% to 70%,
When the light amount is reduced from 0% to 10%, the control circuit unit 4 changes the light amount of each light source 11a ₁ ... With a new light amount change pattern in which the upper limit value UL ′ is 70% and the lower limit value LL ′ is 10%. Thus, the phase of the switching elements Qa to Qc is controlled.

That is, when the work surface illuminance starts to decrease.
Time t₀At the upper limit value UL (= 100%)
Light source 11a₁, 11a_Two, 11a_Three, 11b₁, 11
b_Two, 11b_ThreeFor a predetermined transition time t_TSpend
And fade out linearly to create a new upper limit UL '
(= 70%) and the time t ₀
Light source 1 lit at the lower limit LL (= 40%)
1c₁, 11c_Two, 11c_ThreeAbout the same
Transition time t_TTo fade out linearly
Reduce the light amount to the new lower limit LL '(= 10%)
You. Also, after changing the upper limit value UL 'and the lower limit value LL',
Continuously, the light source 11a of each lighting fixture 10a to 10c₁The amount of light
Are periodically changed in conjunction with each other. did
As a result, as shown in FIG.
Work surface illuminance is substantially constant even after lowering value LL '
Will be kept.

In this embodiment, when the illuminance of the work surface is changed as described above, the change widths B and B 'between the upper limit values UL and UL' and the lower limit values LL and LL 'before and after the change are changed. The light amount change patterns for the respective light sources 11a ₁ are changed so as to be equal. That is, in the case of the present embodiment, the change width B before the change is 100% −40.
% = 60%, the change width B ′ after the change is also 70% −
Each light source 1 from the control circuit unit 4 is set so that 10% = 60%.
A phase control is performed by outputting a dimming signal to 1a ₁ .
Thus, before and after the operation of changing the work surface illuminance, the ratio of the lower limit values LL, LL 'to the upper limit values UL, UL' is different, but the change between the upper limit values UL, UL 'and the lower limit values LL, LL'. Since the widths B and B 'are kept equal, even if the illuminance on the work surface is changed, the apparent absolute flickering light
There is an advantage that it can be maintained without changing before and after the change of the work surface illuminance. For this reason, the present embodiment is effective in a case where it is generally desired to produce an effect in which an eye catching effect is always continuously provided to a viewer of the lighting regardless of the magnitude of the work surface illuminance.

However, in this embodiment, the illuminance on the work surface is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Fifth Embodiment) In the first to fourth embodiments, the light amount change patterns before and after the change of the work surface illuminance are the same except for the upper limit value UL, UL 'and the lower limit value LL, LL'. The present embodiment is characterized in that, in the same configuration as the first embodiment, the light amount change pattern after the change of the work surface illuminance is different from the light amount change pattern before the change.

For example, as shown in FIG. 9, when each of the light sources 11a ₁ ...
The L and the lower limit LL are not changed, and the upper limit continuous lighting time t _H is substantially zero, and the lower limit continuous lighting time t _L is slightly longer, so that the light amount of each of the light sources 11a ₁ . The control circuit 4 controls the phases of the switching elements Qa to Qc. The new light amount change pattern is set so that the total light amount is lower than the total light amount before the change, and the work surface illuminance can be naturally reduced by changing the light amount change pattern. Needless to say, the light quantity change patterns are not limited to these, and the phase of the light sources 11a ₁ ... May be controlled in accordance with two or more kinds of light quantity change patterns whose total light quantity is substantially constant and different from each other.

In the present embodiment, the work surface illuminance is generally changed.
Each time, the glitter is given to the viewer (user)
I changed the eye catch effect called gorgeous and directed it
It is effective when you do. However, in this embodiment,
The case where the surface illuminance is reduced has been described.
Needless to say, it is possible to increase the degree
No. Also, the transition time t _TIs not necessarily linear
You do not need to fade the volume,
Both are possible. Further, the number of lighting fixtures 10a.
The number of light sources provided in the lighting fixtures 10a.
The maximum number of continuous lighting sources and the lower limit number of continuous lighting sources
The number is not limited to this, and an arbitrary number can be selected.

(Embodiment 6) This embodiment is different from the first embodiment in that the ratio between the upper limit continuous lighting source number and the lower limit continuous lighting source number before and after the change of the work surface illuminance is different. There is a feature. For example, FIG.
As shown in (a) to (e), the light amount is controlled according to the light amount change pattern when the total number of light sources is 5, the upper limit number of continuous lighting sources is 4, and the lower limit number of continuous lighting sources is 1. In this case, if the upper limit value UL and the lower limit value LL are kept as they are, and the upper limit continuous lighting source number is changed to 3 and the lower limit continuous lighting source number is changed to 2, the light source continuously lit at a certain point in time is changed. Since the number is reduced, the total light amount is reduced, and as a result, the work surface illuminance is also reduced (see FIG. 6F). Therefore, in general, it is effective when it is desired to maintain the degree of fluctuation before and after the change of the work surface illuminance and to perform an effect of changing the work surface illuminance stepwise.

Here, Equations 1 to 3 for setting the light amount change pattern described in the first embodiment are stored, and the light amount change for each light source is set using the upper limit number of continuous lighting sources and the lower limit continuous lighting source number as parameters. If the control circuit unit 4 is provided with a function of obtaining a pattern by calculation each time and controlling the light amount of each light source in accordance with the obtained light amount change pattern, for example, In the operation of changing the upper limit UL and the lower limit LL, by re-entering the upper limit continuous lighting source number and the lower limit continuous lighting source number in the above equations 1 to 3 in conjunction with the operation, In addition, the work surface illuminance can be changed. As a result, there is no need to store a plurality of types of light amount change patterns, so that the capacity of the memory for storing the light amount change patterns is reduced, and there is an advantage that the cost is reduced. Needless to say, the light quantity change patterns are not limited to these, and the phase of the light sources 11a ₁ ... May be controlled in accordance with two or more kinds of light quantity change patterns whose total light quantity is substantially constant and different from each other.

Furthermore, if the control unit 1 is provided with a function that allows the user to arbitrarily set the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources, for example, only three lighting fixtures for five lamps can be used. Even if you want to turn on two lights by turning them on, you can easily change the light amount change pattern and keep the working illuminance almost constant, so you can use other lighting equipment. Applications such as interlocking can be expanded, and use that can save energy is also possible.

However, in this embodiment, the illuminance on the work surface is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Embodiment 7) This embodiment differs from Embodiment 1 in that
In a similar configuration, the upper limit
Continuous lighting time t_HAnd lower limit continuous lighting time t_LAnd the work surface illuminance
To change the light intensity change pattern before and after the change
There is a characteristic in that. In other words, after changing the work surface illumination
Upper limit continuous lighting time t_H′ And lower limit continuous lighting time t_L’
And the upper limit continuous lighting time t before the change_HAnd lower limit continuous lighting
Interval t_LBetween t_H’= T_L, T_L’= T_HRelationship
Each light source 11 has a new light amount change pattern such that
a₁Are controlled. However, the total number of light sources is 4,
Both the number of limited continuous lighting sources and the number of lower limit continuous lighting sources are set to 2.
In the case of the changed light amount change pattern, the upper limit continuous lighting time t
_HAnd lower limit continuous lighting time t_LUpper limit continuous for
Lighting time t_HAnd lower limit continuous lighting time t_LEven if you flip
This is not the case because the work surface illumination does not change.
You.

For example, as shown in FIG. 11, when each of the light sources 11a ₁ ... Is turned on in accordance with the light amount change pattern similar to that of the first embodiment, the upper limit UL and the lower limit LL in the light amount change pattern remain unchanged and the lower limit continues. Lighting time t _L '
Is changed to a value equal to the upper limit continuous lighting time t _H, and the upper limit continuous lighting time t _H ′ is changed to a value equal to the lower limit continuous lighting time t _L to change the light amount of each light source 11a ₁ . Next, the control circuit unit 4 controls the phases of the switching elements Qa to Qc. That is, in the case of the present embodiment, since t _H > t _L , t _H ′ <t _L ′ in the new light amount change pattern, and
Naturally, the work surface illuminance can be reduced by changing the light amount change pattern (see FIG. 11D). Needless to say, the light amount change pattern is not limited to these.

The present embodiment is generally effective when it is desired to maintain the degree of fluctuation even when the illuminance on the work surface is reduced, and to produce an effect that has an impact on the fluctuation of light. Further, if the control circuit unit 4 is provided with a function of exchanging one kind of light amount change pattern and its upper limit continuous lighting time t _H and lower limit continuous lighting time t _L , the plurality of kinds of light amount change patterns can be obtained. There is no need to store the information, and there is an advantage that the memory capacity can be significantly reduced as compared with the sixth embodiment, and the cost can be further reduced.

In the present embodiment, the case where the work surface illuminance is reduced has been described. However, it is needless to say that the work surface illuminance can be increased. However, when the work surface illuminance is increased, the impact of the light flickering before and after the change is reduced, but by increasing the overall light amount, a sufficient amount of light can be obtained even when used for main illumination, We can direct the room brightly. Further, the light amount does not necessarily need to be linearly faded at the transition time t _T , and can be set in any manner.
Further, the number of lighting fixtures 10a...
The number of light sources provided in a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited to the present embodiment, and any number can be selected.

(Eighth Embodiment) In the first to seventh embodiments, the light amount of each light source 11a ₁ ... Within the transition time t _T when changing the work surface illuminance is changed linearly at a constant rate. I have. This embodiment, on the other hand, Embodiment 1 and in a similar configuration, the working surface migration time for changing the illuminance t _T in each of the light sources 11 while maintaining the fade time t _f in
is characterized by periodically changing the light amount of a ₁ ... between an upper limit value and a lower limit value, and finally shifting to a new light amount change pattern having different upper limit values UL ′ and lower limit values LL ′.

For example, as shown in FIG.
(= 100%) and the lower limit LL (= 40%) are lower than the upper limit UL ′ (= 50%) and the lower limit LL ′ (=
20%), the working surface illuminance is reduced by changing to a new light amount changing pattern.
From the upper limit UL before the change of the work surface illuminance to the upper limit U after the change
An upper limit value (hereinafter referred to as a “transient upper limit value”) TUL that linearly decreases to L ′, and a lower limit value that linearly decreases from the lower limit value LL before the change to the lower limit value LL ′ after the change ( Hereinafter, this is referred to as a “transient lower limit value.” TLL is defined as an upper limit value and a lower limit value, respectively, and the transition time t is determined by a light amount change pattern in which the light amount is changed in the same cycle T as before the change.
Within _T , the light amounts of the respective light sources 11a ₁ are controlled.

Therefore, the transition upper limit value TUL and the transition lower limit value TLL at the transition time t _T are equal to the upper limit value U before the change.
L decreases along a straight line connecting L and the changed upper limit value UL ', and a straight line connecting the lower limit value UL before the change and the lower limit value LL' after the change, and emits a light amount exceeding or falling below these straight lines. each light source 11a ₁ ... is controlled to be no. In the present embodiment, the ratio of the lower limit values LL and LL 'to the upper limit values UL and UL' is equal before and after the change of the work surface illuminance as in the first embodiment, but is not limited thereto. You may make it change.

A mode in which a plurality of light sources 11a ₁ ... Are turned on in accordance with a light quantity change pattern (hereinafter, referred to as a “fluctuation lighting mode”) and a mode in which all light sources are continuously turned on at a constant light quantity (hereinafter, referred to as “fluctuation mode”). , This is referred to as a “continuous lighting mode.”), It is sufficient to consider that the changed upper limit value UL ′ and lower limit value LL ′ shift to the same light amount value SL of the continuous lighting mode, as described above. Transition time t _T for transition from the flickering lighting mode to the continuous lighting mode
Each light source 11a while maintaining the fade time t _f at an internal ₁ ...
The light source 11a ₁ ... Is changed by the control circuit unit 4 as a switching variable means so as to periodically change the light amount between the upper limit value and the lower limit value, and finally shift to the light amount value SL in the continuous lighting mode.
Is controlled (see FIG. 13). It is needless to say that the mode can be similarly switched from the continuous lighting mode to the fluctuation lighting mode.

According to the present embodiment, each of the light sources 11 can be changed even within the transition time t _T when the work surface illuminance is changed or the mode is changed between the fluctuation lighting mode and the continuous lighting mode.
a ₁ ... are periodically changed, and such changes in the light amount are not suddenly interrupted or changed.
The transition operation is performed naturally, and there is an advantage that the illuminance can be changed without giving a stranger to the viewer of the illumination (user). Further, since the illuminance of the work surface at the transition time t _T changes linearly, the person under illumination does not give anxiety or discomfort due to fluctuations or flicker of the illuminance within the transition time t _T. The surface illuminance can be changed.

However, in this embodiment, the illuminance on the work surface is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Embodiment 9) In the embodiment 8, when the lighting mode is switched, the work surface illuminance after the switching is lower than the work surface illuminance before the change (see FIG. 13).
The present embodiment is characterized in that only the lighting mode is switched without changing the work surface illuminance. That is, when the lighting mode is switched from the fluctuation lighting mode to the continuous lighting mode, or when the lighting mode is switched from the continuous lighting mode to the fluctuation lighting mode, if the illuminance on the work surface is different before and after the switching, the work is performed under this illumination. Will give a sense of discomfort to the person.

Therefore, in the present embodiment, the total light amount value of the light source of the entire lighting device in the fluctuation lighting mode (this light amount value is substantially constant irrespective of time) is obtained in the control circuit unit 4 in advance. The light amount of each light source is controlled so that a light amount value obtained by dividing the light amount value obtained when switching to the continuous lighting mode by the total number of light sources is obtained from each light source. In addition, the fade time t _f within the transition time t _T accompanying the switching of the lighting mode as in the eighth embodiment.
Are periodically changed between the upper limit value and the lower limit value while maintaining the light amount 11a ₁ . The phases of the switching elements Qa to Qc are controlled to control the light amounts of the light sources 11a ₁ (see FIG. 14). That is, in the case of the present embodiment, the upper limit value UL in the fluctuation lighting mode is 100% and the lower limit value is 40%, whereas the light amount SL in the continuous lighting mode is 80%. surface illumination is always constant, including the transition time t _T.

According to the present embodiment, as in the eighth embodiment, the transition operation accompanying the switching between the fluctuation lighting mode and the continuous lighting mode is naturally performed, and gives a sense of incongruity to a person (user) watching the illumination. it no further work plane illuminance temporally always substantially constant throughout before and after the switching of the lighting mode and during the transition time in t _T, without notice who is under illumination, to switch the lighting mode There is an advantage that can be.

In the present embodiment, the case of switching from the fluctuation lighting mode to the continuous lighting mode has been described. Conversely, the switching from the continuous lighting mode to the fluctuation lighting mode is also possible. The function that can obtain the total light amount of the change and the light amount of each of the light sources 11a ₁ . The control circuit unit 4 may have a function of calculating and assigning the upper limit value UL and the lower limit value of each of the light sources 11a ₁ ... So as to conform to the change pattern.

In this embodiment, the work surface illuminance is reduced.
Was explained, but the work surface illumination was increased.
It goes without saying that it is also possible. Also, at the time of migration
Interval t _TIn the case, the light amount is not necessarily linearly faded.
There is no need to set it, and any setting can be made.
Further, the number of lighting fixtures 10a...
The number of light sources provided for a ...
Also, the number of lower limit continuous lighting light sources is not limited to this embodiment, but
Any number can be selected.

(Embodiment 10) In Embodiment 8,
Upper limit value U after change from upper limit value UL before change in work surface illuminance
The transient upper limit value TUL that linearly decreases to L ′ and the transient lower limit value TLL that linearly decreases from the lower limit value LL before the change to the lower limit value LL ′ after the change are set as the upper limit value and the lower limit value, respectively. Each light source 11a within the transition time t _T in a light amount change pattern that changes the light amount in the same cycle T as before.
Whereas controls the ₁ ... amount of, in this embodiment substantially constant transient limit TUL ₁ ... and transient lower limit TLL ₁ ...
It is characterized in that the work surface illuminance is changed by a light amount change pattern that gradually reduces the illuminance.

For example, as shown in FIG.
(= 100%) and the lower limit LL (= 40%) are lower than the upper limit UL ′ (= 50%) and the lower limit LL ′ (=
20%), the working surface illuminance is reduced by changing to a new light amount changing pattern.
Transient upper limit values TUL ₁ , TU within the transition time t _T
L ₂ ,... Are reduced from the upper limit value UL by 10% per cycle to a final upper limit value UL ′, and the transient lower limit value T
LL ₁ , TLL ₂ ,... Are 5% per cycle from lower limit LL
The light amount of each of the light sources 11a ₁ ... Is controlled by the control circuit unit 4 as the switching variable means within the transition time t _T in a light amount change pattern that gradually reduces to the final lower limit value TLL ′. As a result, the work surface illuminance within the transition time t _T also decreases stepwise (see FIG. 15D).

According to the present embodiment, the change in the light amount of each of the light sources 11a ₁ ... Is continued even within the transition time t _T , so that the change in the light amount is not suddenly interrupted or changed. The transition operation according to the change in the work surface illuminance is natural, and the work surface illuminance can be changed without giving a stranger to the viewer (user) of the lighting. Unlike the eighth embodiment, the light sources 11a ₁ ... Constantly change the light amount at the time of the upper limit continuous lighting and the lower limit continuous lighting within the transition time t _T because the light sources 11a ₁ . This makes it difficult to give the viewer (user) the impression that the amount of light is changing, thereby changing the illuminance on a relatively small work surface so that the person in the room does not notice. In this case, the present embodiment is particularly effective.

In the present embodiment, the case where the work surface illuminance is reduced has been described. However, it is needless to say that the work surface illuminance can be increased. Further, similarly to the first embodiment, the upper and lower limits UL, U before and after the change of the work surface illuminance are changed.
Although the ratio of the lower limit values LL and LL 'to L' is made equal, the present invention is not limited to this, and the ratio may be changed. Furthermore, the number of lighting fixtures 10a, the number of light sources provided in one lighting fixture 10a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited to this embodiment, and any number is selected. be able to.

(Embodiment 11) In the ninth embodiment,
When switching the lighting mode from the fluctuation lighting mode to the continuous lighting mode without changing the work surface illuminance, the fade time t within the transition time t _T associated with the switching of the lighting mode.
_f periodically changing the respective light source 11a ₁ ... quantity while maintaining between the upper and lower limit values and the respective light source 11a ₁ ... amount of to ultimately migrate continuous lighting mode to the light quantity value SL In contrast to the control, the present embodiment is characterized in that the lighting mode is switched in accordance with a light amount change pattern in which the substantially constant transient upper limit value TUL ₁ ... And the transient lower limit value TLL ₁ . There is.

For example, the transition time t_TWithin the fade time t
_fWhile maintaining the light sources 11a₁… The upper limit and lower
Periodically change between limit values, and finally continuous lighting mode
In the case of the eighth embodiment in which the light amount SL is shifted to
As shown in FIG. _TTransient upper limit T
UL₁, TUL_Two, ..., in the fluctuation lighting mode
5% per point from the limit value UL (= 100%)
When the light amount is reduced to SL (= 80%) in the lamp mode
In addition, the transient lower limit value TLL₁, TLL_Two, ..., the fluctuation point
From the lower limit LL (= 40%) in the lamp mode every cycle
10% light amount SL in continuous lighting mode (= 80%)
Time t
_TWithin each light source 11a₁Are controlled. Paraphrase
If so, the transition time t_TDone earlier in time
Light source 11a₁From the fade of…
Upper limit value (transient upper limit value TUL)₁…) And lower limit (transient
Lower limit value TLL₁…) Change width TB₁… Gradually every cycle
To all the light sources 1
1a₁When the change width of ... becomes 0,
The transition (switching) is completed.

A more detailed description will be given with reference to FIG.
Here, assuming that the switching of the lighting mode from the fluctuation lighting mode to the continuous lighting mode is started at time t ₀ , first, the light sources 11b ₁ , 11b ₂ , 11b controlled according to the light amount change pattern of FIG. ₃ and the light sources 11c ₁ , 1c controlled according to the light amount change pattern of FIG.
1c ₂ and 11c ₃ are cross-fade. The cross-fade means that one light source group 11b ₁ is faded in and the other light source group 11c ₁ is faded out. At this time, the variation width TB ₁ of the light quantity of the light source group 11b ₁ ... fade in to a small value by 5% than the variation width of the light amount in the fluctuation lighting mode B (= 60%) (= 55%).

Next, the light source group 11c₁... and FIG. 16 (a)
Light source 11a controlled according to the light amount change pattern of₁,
11a_Two, 11a_ThreeCrossfade with the light source group
You. At this time, the crossfade performed immediately before
Of change TB₁(= 55%) smaller by 5%
Change width TB_Two(= 50%)
And fade out. Similarly, the crossfloor
Change range TB_Three... small at a certain rate (= 5%)
Thus, the change width TBn of the crossfade becomes 0
% Time t₁Switching of lighting mode is completed at
I do. Therefore, the fade time t_fTurn off the lighting mode
Change width B before transition, transition time t_T(= T ₁-T₀)
Of change TB₁Shift according to the rate of reduction of ...
Time t_TIs uniquely determined.

According to the present embodiment, as described above, the change widths TB ₁ .
5%), the transient upper limit value TUL ₁ ... And the transient lower limit value TLL ₁ ... Always converge to the determined light amount SL, and the values are used for switching the lighting mode. Since the light amount becomes a constant value so that the total light amount becomes equal before and after, the illuminance on the work surface before and after the switching of the lighting mode can be made constant, and the total light amount within the transition time t _T before the switching of the lighting mode. since equal to, including work surface illuminance at the transition time t _T, can be kept constant working surface illuminance before and after the switching of the lighting mode of continuous lighting mode and fluctuation lighting mode. As a result, even within the transition time t _T associated with switching from the fluctuation lighting mode to the continuous lighting mode, the change in the light quantity (fluctuation lighting) of each of the light sources 11a ₁ . There is an advantage that the switching operation of the lighting mode is naturally performed without giving any feeling to the viewer (user) of the lighting. Further, according to the present embodiment, it is possible to switch the lighting mode without changing the work surface illuminance, and there is also an advantage that the lighting mode can be switched without making a person under the lighting aware. is there.

In this embodiment, the case of switching from the fluctuation lighting mode to the continuous lighting mode has been described. However, it is apparent that the same advantage is obtained in the case of the reverse switching from the continuous lighting mode to the fluctuation lighting mode. It is. In addition, the number of lighting fixtures 10a, the number of light sources included in one lighting fixture 10a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited to the present embodiment, and any number is selected. It goes without saying that it can be done.

(Embodiment 12) Since the basic configuration of this embodiment is the same as that of Embodiment 1, illustration and description are omitted, and only the features that are characteristic of this embodiment will be described. That is, the present embodiment, the transition time t _T when changing the work surface illuminance can be set to an arbitrary value, in accordance with the magnitude of the set transition time t _T, each light source 11a at the transition time t _{T The} feature is that the change pattern of the light amount of ₁ ... is switched. Incidentally, the switching of the transition time t _T are provided setting means such as a switch to the control unit 1, such as switching of recognition or change pattern of the transition time t _T, which is set by the setting means is performed by the control circuit unit 4.

For example, the upper limit value UL (= 100%) and the lower limit value LL (= 40%) are set to lower lower limit values UL '.
(= 50%) and the lower limit value LL ′ (= 20%) in the first embodiment in which the work surface illuminance is reduced by changing to a new light amount change pattern, the set transition time t _T is a threshold. When the value is larger than the value A, as shown in FIG. 17, the light amount change pattern described in the eighth embodiment, that is, linearly decreases from the upper limit UL before the change of the work surface illuminance to the upper limit UL ′ after the change. The upper limit value TUL and the lower limit value LL before the change and the transient lower limit value TLL linearly decreasing from the lower limit value LL ′ after the change to the upper limit value and the lower limit value, respectively, and the same period T and the same as before the change. controlling each light source 11a ₁ ... amount of at light amount change pattern that changes the light quantity while maintaining the fade time t _f at the transition time t _T.

On the other hand, the set transition time t_TIs the threshold
If it is smaller than A, as shown in FIG.
The upper limit value UL and the lower limit value LL are each linear as in the state 1.
Light amount to be reduced to the upper limit value UL 'and the lower limit value LL'
Transition time t with change pattern _TWithin each light source 11a₁…of
Control the amount of light. According to this embodiment, the work surface illuminance is changed.
Transition time t_TCan be set to any value
And the set transition time t_TTransition time depending on the size of
t_TEach light source 11a in the₁Change pattern of light intensity
Is switched, the user can change the transition time t._T
Operation to change the work surface illuminance by adjusting
Transition time t for operations such as mode switching_TEach in
Light source 11a₁It is possible to select the light intensity change pattern
it can. In general, the transition time t_TIs relatively short (and then
The threshold value A or less) corresponds to each light source 11a.₁When the amount of light is
Simple transition operation that changes at a fixed rate with respect to the interval
But it can be so uncomfortable for the viewer
Absent. However, the transition time t_TIs the fade time t_fShorter
In this case, each light source 11a is₁Change the amount of light
It is desirable to make it. Also, the transition time t_TBut relatively
Is longer than the threshold A, the fade time
t_fWhile maintaining the light sources 11a₁... by changing the amount of light
So that the viewer sees the lights when they change
There is an advantage that migration can be performed without giving a feeling of strangeness.
Further, the transition time t_TFor those who see lighting by lengthening
You can make the change unnoticed. Also
If the threshold value A can be set by the user, the lighting device
Depending on the usage condition and usage environment of the
It is possible to change the lighting effect
This has the advantage of expanding the applications of such lighting devices.
You.

In the present embodiment, the case where the work surface illuminance is reduced has been exemplified. However, the case where the work surface illuminance is increased or the lighting mode is switched, or the case where the lighting mode is switched while changing the work surface illuminance. It is needless to say that the present invention can also be applied to. In addition, the number of lighting fixtures 10a, the number of light sources included in one lighting fixture 10a, or the number of upper limit continuous lighting sources and the number of lower limit continuous lighting sources are not limited to the present embodiment, and any number is selected. be able to.

(Embodiment 13) This embodiment is different from the embodiment shown in FIG.
Red light source 21 having a red light color as shown₁~ 21 _Three
And a green light source 22 having a green light color₁~ 22_ThreeAnd blue
Blue light source 23 having a light color₁~ 23_ThreeAnd three each
Lighting equipment 20 provided, and each light source 21₁…of
The configuration for controlling the light amount is common to the first embodiment.
Therefore, the illustration is omitted. In the present embodiment, the red light
Source 21₁~ 21_Three20 (a) to 20 (c) show the light amounts of
Green light source 22₁
~ 22_Three(E) to (g) in FIG.
While changing according to the pattern, the blue light source 23₁
~ 23_Three(I) to (k) in FIG.
It changes according to the pattern. That is, light of the same color
Source 21₁…, 22₁…, 23₁... the same about each other
Delay time t according to the light amount change pattern_dJust stagger
While changing the light amount, different types of light sources 21₁…about
Light intensity according to the light intensity variation pattern with the period T equal
Is changing. Therefore, the total light quantity for each light color is
(D), (h) and (l) in FIG.
Light source), light source 21 of each color₁…, 22₁…, 23₁Departs from ...
The illuminance on the work surface where the
(See FIG. 3 (m)). Moreover, the light emitting surface of the lighting device 20
If you look at, the light source 21 of each color₁…, 22₁…, 23₁…of
By changing the amount of light, you can change the color of the light
You.

Next, the case where the work surface illuminance is changed will be described. In the present embodiment, before and after the work surface illuminance is changed, the control circuit is configured such that the ratio of the total light amount of each light color after the change to the total light amount of each light color before the change becomes equal for each light color. The light source 21 of each light color in the part 4
_The light amount change pattern is changed for each of ₁ , 22 ₁ , 23 ₁ ,.

[0095] For example, as shown in FIG. 20 (a) ~ (c), the red light source 21 ₁ to 21 ₃ of the total amount (sum of the three light levels) is 140% before change, after change 70 %, The ratio is 50% (see FIG. 3D). At this time, the green light sources 22 _{1 to} 22 _1
3 and similarly for the blue light source 23 ₁ to 23 _3, each of the total amount of light changes the amount of light to the small reduction by 50% (Fig. (H) and (l) refer). Note that, within the transition time t _T at which the light amount is reduced, each light source 21 ₁ linearly changes from the upper limit UL and the lower limit LL before the change to the upper limit UL ′ and the lower limit LL ′ after the change, respectively.
, 22 ₁ ..., 23 ₁ ... are controlled.

According to [0096] this embodiment, the light source 21 ₁ ... of each light color when changing the work plane illuminance, 22 ₁ ..., 23 ₁ ...
Is changed at the same ratio, the overall light color emitted from the lighting fixture 20 does not change before and after the change of the illuminance on the work surface, and the person (user) under the light on the work surface does not change. There is an advantage that a sense of incongruity due to a change in light color is not given.

The number of light sources, their arrangement and light colors are not intended to be limited to the present embodiment, but can be arbitrarily selected according to the purpose of use or application. Also, the upper limit value and lower limit value of the light amount change pattern or the fade time and cycle may be arbitrarily set according to the use. In other words, by changing the light amount change pattern for each light color, the overall light color emitted from the lighting fixture changes, so that it can be freely changed according to the configuration, use, layout, etc. of the fixture.

(Embodiment 14) This embodiment is different from Embodiment 13 in that only the lighting mode is switched from the fluctuation lighting mode to the continuous lighting mode without changing the overall light color emitted from the lighting fixture 20. There are features. Here, in this embodiment a red light source 21 ₁ and the green light source 22 ₁ and the blue light source 23 ₁ first group G _1, red light source 21 ₂ and the green light source 22 ₂ and the blue light source 23 ₂ of the second group G ₂ , The red light source 21 ₃ , the green light source 22 _3, and the blue light source 23 ₃ are grouped into a _third group G _3, and each group G ₁ according to the same light amount change pattern as shown in FIGS. every ~G ₃ and changing the amount of light while shifting the delay time t _d. However, each light source 21 in each group _{G 1 ~G 3 1 ..., 22} 1 ..., 23
₁ ... is to be turned while keeping the same chromaticity and luminous flux ratio when all of these values for each group G ₁ ~G ₃ is set to be equal. Thereby, the illuminance on the work surface becomes substantially constant, and the light sources 21 _{1 of} each color are used.
, 22 ₁ , 23 ₁ , etc., the light color on the work surface where the light emitted is combined is the combined color of each light color, and the light color does not differ between the groups G _{1 to} G _3. Also, the light color of the entire lighting fixture 20 does not change with time.

Next, a case where the lighting mode is switched from the fluctuation lighting mode to the continuous lighting mode will be described. In this embodiment, Embodiment 8 and the light source 21 ₁ ... limit the amount of light of each group G ₁ ~G ₃ while maintaining the fade time t _f at the transition time t _T accompanying the switching of similarly lit mode and periodically varied between a lower limit value, so as to ultimately migrate continuous lighting mode to the light quantity value SL, the control circuit unit 4 each light source 21 and phase control the switching element Qa~Qc by ₁ ..., 22 ₁ ..., and controls the 23 ₁ ... amount (see FIG. 21). That is, in the case of the present embodiment,
While the upper limit value UL in the fluctuation light mode of the entire light quantity of each group G _{1 to} G ₃ is 100% and the lower limit value is 40%, the light quantity value SL in the continuous light mode is 80%. At this time, the work surface illuminance is always constant including the transition time t _T (see FIG. 21D).

According to the present embodiment, before and after the switching between the fluctuation lighting mode and the continuous lighting mode and within the transition time t _T , the overall light color emitted from the lighting fixture 20 does not change and the person under illumination ( There is an advantage that the lighting mode can be switched without giving the user) a sense of discomfort due to a change in the light color of the work surface. Note that, in the present embodiment, the case of switching from the fluctuation lighting mode to the continuous lighting mode has been described. Conversely, switching from the continuous lighting mode to the fluctuation lighting mode is also possible, and the number of light sources The arrangement and the light color are not intended to be limited to the present embodiment, and can be arbitrarily selected according to the purpose of use or application. Furthermore, the upper limit value and the lower limit value of the light amount change pattern, or the fade time and cycle may be arbitrarily set according to the application. In other words, by changing the light amount change pattern for each light color, the overall light color emitted from the lighting fixture changes, so that it can be freely changed according to the configuration, use, layout, etc. of the fixture. Further, if the entire light color of the lighting fixture 20 does not change before and after the transition when switching the lighting mode and within the transition time t _T , the lighting mode may be switched while changing the work surface illuminance. In this case, the same effect as described above can be obtained.

[0101]

According to the first aspect of the present invention, there are provided a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the amount of light of each light source. At least one of the light sources controls the lighting means so that the light amount changes according to a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount. In a lighting device for controlling lighting means so that each light source sequentially changes the light amount in accordance with a light amount change pattern at predetermined time intervals, a variable means for changing illuminance on a work surface illuminated by a plurality of light sources is provided. Therefore, there is an effect that the illuminance on the work surface can be arbitrarily varied by the variable means while obtaining a special effect such as an eye catch effect.

The invention according to claim 2 comprises a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the amount of light of each light source. And controlling at least one of the light sources so that the light amount changes in accordance with a light amount change pattern that is monotonously and periodically changed between two light amounts of an upper limit value and a lower limit value of the light amount. The lighting device controls the lighting means so that the light amount changes in accordance with the light amount change pattern sequentially with a delay every predetermined time,
Since there is provided switching means for switching between a first lighting mode in which each light source is turned on in accordance with the light amount change pattern and a second lighting mode in which the light source is turned on with a substantially constant light amount regardless of the light amount change pattern, the eye catch effect is provided. There is an effect that the lighting mode can be appropriately switched by the switching means while obtaining special effects such as the above.

The invention according to claim 3 comprises a plurality of light sources, lighting means for lighting these light sources, and control means for controlling the lighting means to change the amount of light of each light source. And controlling at least one of the light sources so that the light amount changes in accordance with a light amount change pattern that is monotonously and periodically changed between two light amounts of an upper limit value and a lower limit value of the light amount. The lighting device controls the lighting means so that the light amount changes in accordance with the light amount change pattern sequentially with a delay every predetermined time,
Switching between a first lighting mode in which each light source is turned on according to the light amount change pattern and a second lighting mode in which the light source is turned on with a substantially constant light amount regardless of the light amount change pattern, and a plurality of light sources when the lighting mode is switched Switchable means for varying the illuminance on the work surface illuminated by the light source, so that the lighting mode can be appropriately switched by the switchable variable means and the illuminance on the work surface can be arbitrarily changed while obtaining special effects such as an eye catch effect. There is an effect that it can be changed.

According to a fourth aspect of the present invention, when the illuminance on the work surface is changed, the control means controls the lighting means so that the ratio of the lower limit value to the upper limit value of the light amount change pattern before and after the change becomes substantially equal. Because of the control, before and after the operation of changing the illuminance on the work surface, the width of the brightness of the light with respect to the entire light amount does not change, and to the viewer of the light source, it does not give a strange feeling to the flickering appearance of the light Thus, there is an effect that the illuminance on the work surface can be changed.

According to a fifth aspect of the present invention, when the illuminance on the work surface is varied, the ratio of the lower limit value to the upper limit value of the light amount change pattern after the change is set to the upper limit value of the light amount change pattern before the change. Since the lighting means is controlled so as to be smaller than the ratio of the lower limit to the work surface, the change width between the upper limit and the lower limit before and after changing the illuminance of the work surface becomes large, and the width of the brightness of the light with respect to the total light amount becomes larger than the work surface. There is an effect that the work surface illuminance can be changed so that the light after the change in illuminance is greater than before the change, and the light flickering to the viewer of the light source becomes stronger.

According to a sixth aspect of the present invention, when the illuminance on the work surface is changed, the control means adjusts the ratio of the lower limit value to the upper limit value of the light quantity change pattern after the change. Since the lighting means is controlled so as to be larger than the ratio of the lower limit to the work surface, the change width between the upper limit and the lower limit before and after changing the illuminance on the work surface becomes smaller, and the width of the brightness of the light with respect to the total light amount becomes smaller on the work surface. There is an effect that the work surface illuminance can be changed so that the light after the change in the illuminance is smaller than before the change in the illuminance, and the light flickering feeling for the viewer of the light source is suppressed.

According to a seventh aspect of the present invention, when the illuminance on the work surface is changed, the control means changes only the upper limit value of the light amount change pattern before and after the change and makes the lower limit value substantially constant. Since the lighting means is controlled, the maximum value of the amount of light emitted from each light source is kept substantially constant before and after the change in the work surface illuminance, so that even after the change in the work surface illuminance, the impression of the apparent brightness of the illumination can be maintained. There is an effect that the work surface illuminance can be changed without much change.

According to an eighth aspect of the present invention, when the illuminance on the work surface is changed, the control means changes only the lower limit value of the light amount change pattern before and after the change and makes the upper limit value substantially constant. Since the lighting means is controlled, the minimum value of the amount of light emitted from each light source is kept substantially constant before and after the change of the work surface illuminance, and even after the change of the work surface illuminance, the illumination is performed without greatly changing the work surface illuminance. There is an effect that the impression of the apparent brightness can be changed.

According to a ninth aspect of the present invention, when the illuminance on the work surface is varied, the control means has a substantially constant variation range between the upper limit value and the lower limit value of the light amount change pattern before and after the change. The lighting means is controlled as described above, so that before and after the operation of changing the work surface illuminance, the width of change between the upper limit value and the lower limit value is kept equal, and even when the work surface illuminance is changed, the apparent absolute light There is an effect that the feeling of fluctuation does not change before and after the change of the work surface illuminance and can be maintained.

According to the tenth aspect of the present invention, the variable means controls the lighting means to change the light amount change pattern to change the illuminance on the work surface, so that the light source is given to the viewer every time the work surface illuminance is changed. There is an effect that the effect can be produced by changing the eye catch effect such as glitter and gorgeousness. According to an eleventh aspect of the present invention, the variable means changes the ratio of the number of light sources lit at an upper limit light amount and the number of light sources illuminated at a lower limit light amount at an arbitrary time among a plurality of light sources. Since the illuminance on the surface is variable, there is an effect that it is possible to maintain the degree of fluctuation before and after the change of the illuminance on the work surface and to produce an effect of changing the illuminance on the work surface in a stepwise manner.

According to a twelfth aspect of the present invention, the variable means is lit at the upper limit light amount in the light amount change pattern, and
Since the illuminance on the work surface is changed by reversing the lighting time at the lower limit light amount, even if the work surface illuminance is darkened, the degree of fluctuation is maintained as it is, and it has an impact on the feeling of light fluctuation There is an effect that directing becomes possible. .

According to a seventeenth aspect of the present invention, the control means maintains the fade time required for the light amount of each light source to change between the upper limit value and the lower limit value in the light amount change pattern while maintaining the light amount of each light source within the transition time. Since the lighting means is controlled so as to change, even during the transition time, the periodic change in the light amount of each light source is continued, and such a change in the light amount is not suddenly interrupted or changed. There is an effect that the operation is performed naturally, and the illuminance and the lighting pattern on the work surface can be changed without giving a stranger to the viewer of the light source.

According to the eighteenth aspect of the present invention, the control means sets the upper limit value and the lower limit value of the light amount change of each light source within the transition time.
On a straight line connecting the upper limit value before changing each light source and the target light amount after the change is performed, and on a straight line connecting the lower limit value before performing the change and the target light amount after the change is performed Since the lighting means is controlled so that the user gets on the vehicle, the transition operation accompanying the switching is performed naturally, and there is an effect that a person looking at the light source does not feel uncomfortable.

According to a nineteenth aspect of the present invention, the control means controls the lighting means so that the illuminance on the work surface is substantially constant before and after the switching operation and during the transition time when the lighting mode is switched by the switching means. Therefore, the work surface illuminance is always substantially constant over time before and after the switching of the lighting mode and during the transition time between them, and the effect that the lighting mode can be switched without making the person under the lighting aware. is there.

According to a twentieth aspect of the present invention, the control means controls the lighting means so that the upper limit value and the lower limit value of the light quantity change of each light source within the transition time change at a predetermined rate at predetermined intervals. Since the change in the light amount of each light source continues even during the transition time, the change in the light amount does not suddenly break or change, so that the transition operation accompanying the change in illuminance on the work surface is natural, and the light source There is an effect that the illuminance on the work surface can be changed without giving a sense of strangeness to the viewer.

According to a twenty-first aspect of the present invention, in the light amount change pattern, the switching means sets the change width between the upper limit value and the lower limit value during the fade when the light amount of each light source changes between the upper limit value and the lower limit value within the transition time. Since the lighting mode is switched by sequentially changing the light source for each light source at a predetermined rate, the change in the light amount of each light source is continued even within the transition time accompanying the switching, and the change in the light amount is suddenly interrupted or changed. Therefore, there is an effect that the transition operation of the lighting mode is performed naturally, and the viewer of the light source does not feel strange.

According to a twenty-second aspect of the present invention, the control means controls the lighting means so that when the lighting mode is switched by the switching means, the illuminance on the work surface is substantially constant before and after the switching and during the transition time. Therefore, it is possible to switch the lighting mode without changing the illuminance on the work surface, and there is an effect that the lighting mode can be switched without notifying a person under illumination.

According to a twenty-fourth aspect of the present invention, there is provided a setting means capable of setting a transition time to an arbitrary value, wherein the control means changes a light amount of each light source within the transition time according to the set transition time. Therefore, the user can select a change pattern of the light amount of each light source within the transition time in the operation of changing the work surface illuminance or the operation of switching the lighting mode by setting the transition time. This has the effect.

According to a twenty-fifth aspect of the present invention, there is provided a threshold value setting means for setting a threshold value to be compared with the transition time set by the setting means, and the control means controls the transition time set by the setting means. Is changed based on the result of comparing the light amount of each light source within the transition time based on the result of comparison with the predetermined threshold value set by the threshold value setting means. Or according to the user's preference
It is also possible to change the effect of lighting, and there is an effect that the use of such a lighting device is expanded.

According to a twenty-sixth aspect of the present invention, there is provided a light source having a plurality of light sources having different light colors, wherein the control means determines that the ratio of the total light amount of each light color before and after the change of the light amount of each light source is the light source of each light color. Since the lighting means is controlled to be substantially equal to each other, when the work surface illuminance is changed, by changing the light source of each light color at the same ratio, the entire light color is changed in the work surface illuminance and the lighting mode. This does not change before and after the change, and there is an effect that a person under illumination does not feel uncomfortable due to a change in light color on the work surface.

According to a twenty-seventh aspect of the present invention, there is provided a light source having a plurality of light colors different from each other, and the control means makes the light color on the work surface substantially constant before and after the change of the light amount of each light source and in the process. Control of the lighting means in this way, the overall light color does not change before and after the change of the work surface illuminance and the change of the lighting mode, and the light color on the work surface changes for the person under illumination. This has the effect of not giving a sense of incongruity.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment.

FIG. 2 is an explanatory diagram for explaining the operation of the above.

FIG. 3 is an explanatory diagram for explaining the operation of the above.

FIG. 4 is an explanatory diagram for explaining an operation of a second embodiment.

FIG. 5 is an explanatory diagram for explaining another operation of the above.

FIG. 6 is an explanatory diagram for explaining an operation of a third embodiment.

FIG. 7 is an explanatory diagram for explaining another operation of the above.

FIG. 8 is an explanatory diagram for explaining an operation of a fourth embodiment.

FIG. 9 is an explanatory diagram for explaining the operation of the fifth embodiment.

FIG. 10 is an explanatory diagram for explaining an operation of a sixth embodiment.

FIG. 11 is an explanatory diagram for explaining an operation of a seventh embodiment.

FIG. 12 is an explanatory diagram for explaining the operation of the eighth embodiment.

FIG. 13 is an explanatory diagram for explaining another operation of the above.

FIG. 14 is an explanatory diagram for explaining the operation of the ninth embodiment.

FIG. 15 is an explanatory diagram for explaining the operation of the tenth embodiment.

FIG. 16 is an explanatory diagram for explaining the operation of the eleventh embodiment.

FIG. 17 is an explanatory diagram for explaining the operation of the twelfth embodiment.

FIG. 18 is an explanatory diagram for explaining the above operation.

FIG. 19 is a plan view showing a lighting device according to a thirteenth embodiment.

FIG. 20 is an explanatory diagram for explaining the above operation.

FIG. 21 is an explanatory diagram for explaining the operation of the fourteenth embodiment.

[Explanation of symbols]

1 control unit 2 the power supply unit 3 zero-cross detecting unit 4 the control circuit unit 10 ₁ to 10 ₃ luminaire _{11a 1 ..., 11b 1 ...,} 11c 1 ... light source Qa~Qc switching element

Claims (27)

[Claims] 1. A light source comprising: a plurality of light sources; lighting means for lighting these light sources; and control means for controlling the lighting means to change the light amount of each light source, wherein the control means includes at least one of the plurality of light sources. The light source controls the lighting means so that the light amount changes in accordance with a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount, and at least one other light source is turned on every predetermined time. A lighting device for controlling the lighting means so that the light amount changes in accordance with the light amount change pattern sequentially with a delay, the lighting device comprising variable means for changing the illuminance on a work surface illuminated by a plurality of light sources. . 2. A light source comprising: a plurality of light sources; lighting means for lighting the light sources; and control means for controlling the lighting means to change the amount of light of each light source, wherein the control means includes at least one of the plurality of light sources. The light source controls the lighting means so that the light amount changes in accordance with a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount, and at least one other light source is turned on every predetermined time. In a lighting device that controls lighting means so that the light amount changes in accordance with the light amount change pattern, a first lighting mode in which each light source is turned on in accordance with the light amount change pattern, and a substantially constant light amount independent of the light amount change pattern A lighting device, comprising: switching means for switching between a second lighting mode in which the light source is turned on in the second lighting mode. 3. A light source comprising: a plurality of light sources; lighting means for lighting these light sources; and control means for controlling the lighting means to change the amount of light of each light source, wherein the control means comprises at least one of the plurality of light sources. The light source controls the lighting means so that the light amount changes in accordance with a light amount change pattern that monotonously and periodically changes between two light amounts of an upper limit value and a lower limit value of the light amount, and at least one other light source is turned on every predetermined time. In a lighting device that controls lighting means so that the light amount changes in accordance with the light amount change pattern, a first lighting mode in which each light source is turned on in accordance with the light amount change pattern, and a substantially constant light amount independent of the light amount change pattern To switch between a second lighting mode in which the light source is turned on, and to change the illuminance on the work surface illuminated by the plurality of light sources when the lighting mode is switched. A lighting device comprising variable means. 4. The control means controls the lighting means such that when the illuminance on the work surface is varied, the ratio of the lower limit value to the upper limit value of the light amount change pattern before and after the change is substantially equal. The lighting device according to claim 1 or 3, wherein 5. The control unit according to claim 1, wherein when the illuminance on the work surface is varied, a ratio of the lower limit to the upper limit of the light amount change pattern after the change is a ratio of the lower limit to the upper limit of the light amount change pattern before the change. The lighting device according to claim 1, wherein the lighting unit is controlled to be smaller. 6. The control device according to claim 1, wherein when the illuminance on the work surface is varied, a ratio of a lower limit value to an upper limit value of the light amount change pattern after the change is a ratio of a lower limit value to an upper limit value of the light amount change pattern before the change. The lighting device according to claim 1, wherein the lighting unit is controlled to be larger. 7. When the illuminance on the work surface is changed, the control means changes only the upper limit value of the light amount change pattern before and after the change and controls the lighting means so that the lower limit value is substantially constant. The lighting device according to claim 1, wherein: 8. When the illuminance on the work surface is changed, the control means changes only the lower limit value of the light amount change pattern before and after the change and controls the lighting means so that the upper limit value is substantially constant. The lighting device according to claim 1, wherein: 9. The lighting device according to claim 1, wherein when the illuminance on the work surface is varied, the lighting device is configured such that a change width between the upper limit value and the lower limit value of the light amount change pattern before and after the change is substantially constant. The lighting device according to claim 1, wherein the lighting device is controlled. 10. The illuminating device according to claim 1, wherein the changing means changes the illuminance on the work surface by controlling the lighting means to change the light amount change pattern. 11. A variable means for changing the ratio of the number of light sources illuminated at the upper limit light amount and the number of light sources illuminated at the lower limit light amount at an arbitrary point in time from among a plurality of light sources. The illumination device according to claim 1, wherein the illuminance is varied. 12. The illuminance on a work surface is varied by inverting a time of lighting with an upper limit light amount and a time of lighting with a lower limit light amount in a light amount change pattern. The lighting device according to claim 1. 13. The lighting device according to claim 1, wherein the changing means changes the illuminance on the work surface over a predetermined transition time. 14. The lighting device according to claim 2, wherein the switching means switches the lighting mode over a predetermined transition time. 15. The lighting device according to claim 3, wherein the switching variable means switches the lighting mode over a predetermined transition time, and changes the illuminance on the work surface when the lighting mode is switched. 16. The lighting device according to claim 13, wherein the control means controls the lighting means so that the light amount of each light source changes at a substantially constant rate during the transition time. 17. The control unit controls the light amount of each light source within the transition time while maintaining a fade time required for the light amount of each light source to change between the upper limit value and the lower limit value in the light amount change pattern. The lighting device according to claim 13, wherein the lighting device is controlled. 18. The control means according to claim 1, wherein the upper limit value and the lower limit value of the light amount change of each light source within the transition time are a straight line connecting the upper limit value before the change of each light source and the target light amount after the change. 16. The lighting device according to claim 13, wherein the lighting unit is controlled so as to be on a straight line connecting the upper and lower limit values before the change and the target light amount after the change. . 19. The control means controls the lighting means so that when the lighting mode is switched by the switching means, the illuminance on the work surface before and after the switching operation and within the transition time is substantially constant. 19. The lighting device according to claim 18, wherein 20. The lighting device according to claim 20, wherein the control means controls the lighting means so that the upper limit value and the lower limit value of the light amount change of each light source within the transition time change at a predetermined rate at predetermined intervals. The lighting device according to 13 or 14 or 15. 21. The switching means sequentially changes a change width between an upper limit value and a lower limit value during a fade when the light amount of each light source changes between the upper limit value and the lower limit value in the light amount change pattern for each light source within the transition time. The lighting mode is switched by changing the lighting mode at a predetermined rate.
16. The lighting device according to 4 or 15. 22. The control means controls the lighting means such that when the lighting mode is switched by the switching means, the illuminance on the work surface becomes substantially constant before and after the switching and during the transition time. 22. The lighting device according to claim 21. 23. The lighting device according to claim 13, wherein the control means controls the lighting means so that the illuminance on the work surface within the transition time changes at a predetermined rate. 24. Setting means for setting a transition time to an arbitrary value, wherein the control means changes the way of changing the light amount of each light source within the transition time according to the set transition time. The lighting device according to claim 13, wherein the lighting device is a lighting device. 25. Threshold value setting means for setting a threshold value to be compared with the transition time set by the setting means,
The control means changes the way of changing the light amount of each light source within the transition time based on a result of comparing the transition time set by the setting means with a predetermined threshold set by the threshold setting means. 25. The lighting device according to claim 24, wherein: 26. A light source having a plurality of light colors different from each other, and the control means controls the ratio of the total light amount for each light color before and after the change in the light amount of each light source to be substantially equal for each light color light source. The lighting device according to claim 1, wherein a lighting unit is controlled. 27. A light source having a plurality of light sources having different light colors, wherein the control means controls the lighting means so that the light color on the work surface becomes substantially constant before and after the change of the light amount of each light source and in the process. The lighting device according to claim 1, wherein the lighting device is controlled.