JPH10208521A - Automatic lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen power consumption and facilitate miniaturization by forming a light source of a light emitting part of a plurality of LED elements and lighting a given region with light emitted from the LED elements. SOLUTION: 12 LED elements 21, for example, are disposed in longitudinal and transverse array, connected in series, and control blinking state at a lighting control circuit 22. The control circuit 22 controls blinking state of elements 21 at an output from a heat rag detection unit 1 and an output from a detection unit 23. From the detection unit 23, it is detected that the brightness of a given region such as corridor is darker than a given brightness, a detection signal is inputted, and the elements 21 are lit. When a detection signal indicating that a human body pass through a given detection region at the heat ray detection unit 1 is inputted, the elements 21 are lit for a given time. A directive control cover 24 orients light emitted from a plurality of the elements 21 that are light sources to a given region such as floor source or corridor and is formed of acrylic resin or the like in a semi-cylindrical shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed on a wall of a corridor or the like of a house or the like, and detects a change in state such as brightness or passage of a human body in a predetermined area of a floor, and automatically detects the area. The present invention relates to an automatic lighting device for illuminating.

[0002]

2. Description of the Related Art Conventionally, in a corridor or the like in a house, an automatic illuminating device shown in FIG. 8 is provided as an automatic illuminating device installed to detect the passage of a human body in a predetermined area at night and automatically illuminate the area. There is a device. This automatic illuminating device is used, for example, by being attached to a switch box for wiring on a wall of a corridor or the like in a house. As shown in the block diagram of FIG. And a power supply unit 3.

A heat ray detecting section 1 corresponds to a state detecting section for detecting the passage of a human body, which is a state change of a predetermined area such as a floor surface or a corridor, and an optical element for condensing heat rays emitted from the human body. A condenser lens 11 formed of a polyethylene resin material, a pyroelectric element 12 for detecting a heat ray incident through the condenser lens 11, and an amplifier for amplifying an output signal from the pyroelectric element 12. A circuit 13, a voltage signal which is an output from the amplifier circuit 13, a filter circuit 14 which outputs a detection signal in a predetermined frequency band, and an output signal from the filter circuit 14 which is compared with a predetermined threshold value. 15 that outputs a signal when is larger than the threshold value, and an output circuit 16 that receives a signal from the comparison circuit 15, determines whether a human body passes through a predetermined area, and outputs a detection signal for a predetermined time
And

The illuminating section 2 illuminates the above-mentioned area with the output from the heat ray detecting section 1. For example, the illuminating section 2 is formed of a small date bulb having a power consumption of about 5 W.
And a brightness detection unit 23 formed of, for example, a CdS element for detecting the brightness of the predetermined area. The light source unit 21 is provided with a diffusion cover 25 made of, for example, a milky white acrylic resin material on the entire surface in order to diffuse the light from the above-mentioned jujube bulb so as not to be dazzling.

[0005] The power supply unit 3 is a commercial power supply of AC100V.
And a power source for supplying power to the heat ray detecting unit 1 and the illuminating unit 2. The transformer 31 converts the voltage of the AC power supply into a predetermined low voltage. And a power supply circuit 32 that converts the voltage into a direct current, stabilizes and outputs the same.

[0006] The above-mentioned automatic illuminating device is attached to a wiring switch box, which is called a two switch box and is used when two general wiring devices are connected in series, and is used in a house. It is installed on walls such as corridors. Then, the brightness detector 23 detects that the brightness of the place where the automatic illumination device is installed is equal to or less than a predetermined brightness, and the heat ray detector 1 detects the condensing lens 11 and the pyroelectric light. When it is detected that the human body has passed through the detection area optically formed by the detection element of the element 12, the lighting control circuit 22 is controlled by the output circuit 16, and the light bulb of the light source unit 21 is set to the predetermined position. It is lit continuously for a period of time.

[0007]

By the way, a wall-mounting device having the same module as a wiring device, such as the above-mentioned automatic lighting device, in a corridor of a house or the like, is effective for an AC power supply supplied by indoor wiring. It is desirable to be able to use it. Therefore, for example, as in the night light device shown in FIG. 10, the lighting unit having a jug light bulb (not shown), which is turned on by an AC power source and whose blinking is controlled by a pressing operation of the cover 26, is appropriately controlled by the electric power. There is a need for an integrated wiring outlet 4 that can be used by connecting devices. However, the above-mentioned automatic illuminating device is compactly configured by integrally housing the heat ray detecting unit 1 as the state detecting unit, the illuminating unit 2 and the power supply unit 3, but the power supply unit 3 having the transformer 31 has a small shape. As a result, there is a problem that it is difficult to reduce the size of the wiring outlet so as to integrally provide the wiring outlet.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic illuminating device which consumes less power and can be easily miniaturized without using a transformer in a power supply unit. .

[0009]

In order to achieve the above object, an automatic illuminating device according to the first aspect of the present invention includes a state detecting section for detecting a state change of a predetermined area such as a floor surface, and An illuminating unit that illuminates the area with an output, and a power supply unit that supplies power to each of the units,
In the illuminating section, the light source is formed as a plurality of LED elements. As a result, a predetermined area such as a floor surface is illuminated with light emitted from the LED element.

[0010] In the automatic illuminating device according to the second aspect, the illuminating unit according to the first aspect has a directional control means for directing the light emitted from the light source to the area. Thereby, the light emitted from the LED element is directed to a predetermined area such as a floor surface by the directivity control means.

Further, in the automatic illuminating device according to the third aspect, the pointing control means according to the second aspect has a Fresnel lens shape. Thus, the light emitted from the LED element is directionally controlled in a Fresnel lens shape.

According to a fourth aspect of the present invention, in the automatic illuminating apparatus, the directional control means according to the second or third aspect has at least two different directional characteristics to the area.
In addition, the light sources are provided on the same plane so that the central axis of the light distribution and the intersection angle between the directivity control means are different. Thereby, the light emitted from the LED elements provided on the same plane so as to have different intersection angles with the directivity control means is directed to a predetermined area such as a floor surface with at least two different directivity characteristics. It will be.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the automatic illuminating device according to the present invention will be described with reference to FIGS. 1 to 6, and a second embodiment will be described with reference to FIG.

[First Embodiment] FIGS. 1A and 1B are explanatory views showing the configuration of an automatic illuminating device according to a first embodiment, wherein FIG. 1A is a plan view with a cover removed, and FIG. It is a side sectional view. FIG. 2 is a block diagram of the automatic lighting device shown in FIG. FIG. 3 shows an LE used in the automatic lighting device shown in FIG.
It is explanatory drawing of a D element. 4A and 4B are explanatory diagrams of directivity control means of the automatic lighting device shown in FIG. 1, wherein FIG. 4A is a diagram showing a relationship between an LED element and a direction control cover, and FIG. FIG. 5 is an explanatory diagram of light distribution by the illumination unit of the automatic illumination device shown in FIG. FIG. 6 is an explanatory diagram of a method of attaching the automatic lighting device shown in FIG.

The automatic illuminator AL is installed on a wall such as a corridor in a house to detect the passage of a human body in a predetermined area at night and automatically illuminate the area. As shown in the block diagram of FIG. 2, a heat ray detector 1, an illuminator 2, and a power supply 3 are provided, and a wiring outlet 4 is appropriately provided as shown in FIG. These are all housed in a housing formed by the cover 51 and the body 52. The heat ray detector 1 is the same as that described as the conventional example,
Detailed description is omitted.

The illuminating section 2 illuminates a predetermined area such as a corridor such as a floor surface with an output from the heat ray detecting section 1, and a plurality of LED elements 2 shown in FIG.
, A lighting control circuit 22, a brightness detecting unit 23 formed of, for example, a CdS element for detecting the brightness of a predetermined area such as a floor or a corridor, and a directivity control cover 24. Have.

As shown in FIG. 3, the LED elements 21, 21,... Are provided on a reflector 21b having a curved surface inside a transparent resin case 21a made of a shell-shaped epoxy resin or the like. It has an LED chip 21c that emits light,
It has a spindle-shaped light distribution characteristic around the center axis 21d.
As shown in FIG. 1A, for example, 12 LED elements 21 are arranged in rows and columns, each of them is connected in series, and the blinking state is controlled by a lighting control circuit 22 described later. Is done.

The lighting control circuit 22 is formed of, for example, a switch element such as a transistor, and uses the output from the heat ray detecting section 1 and the output from the brightness detecting section 23 as LED elements 21, 21,. To control the blinking state of. The lighting control circuit 22 receives a detection signal that detects that the brightness of a predetermined area such as a floor surface or a corridor is lower than the predetermined brightness from the brightness detection unit 23, similarly to that described in the conventional example. When the heat ray detection unit 1 receives a detection signal indicating that a human body has passed through a predetermined detection area, the LED elements 21 are turned on for a predetermined time.

The directional control cover 24 transmits light emitted from a plurality of LED elements 21, 21,...
As shown in FIG. 4A, the directional control means is directed to a predetermined area such as a corridor, for example, on a semi-cylindrical inner curved surface formed of a transparent acrylic resin material or the like, as shown in FIG. , 24an, 24a1,..., 24an having a predetermined width and different heights and inclination angles, respectively, having a Fresnel lens shape. With the pointing control cover 24, the LED elements 21, 21,.
The central axis 2 of the light distribution characteristics according to the respective directivity control results
LED elements 21, 21,... So that the intersection angle between 1d and the floor surface F near the wall surface W where the automatic lighting device is installed is approximately 70 to 50 degrees as shown in FIG. The light emitted from the automatic lighting device AL is directionally controlled to illuminate a predetermined fan-shaped area of the corridor F from the wall surface W on which the automatic lighting device AL is installed, as shown in FIG.

The power supply unit 3 is a commercial power supply of AC100V.
And supplies power to the heat ray detecting unit 1 and the illuminating unit 2 by converting the voltage of the AC power source into a predetermined low voltage and converting the voltage into a direct current having a predetermined voltage value. It is formed only of a power supply circuit 33 that outputs a stabilized signal. The power supply circuit 33 is, for example, a series low-voltage stabilization circuit that lowers and stabilizes the AC of the commercial power supply with a resistor connected in series with the AC power supply, and is connected in series with the hot-wire detection unit 1. Twelve LED elements 21, 21,
In order to supply a current of about 20 mA in total, a DC power stabilized to a predetermined voltage value of about 2 W is supplied to.

The automatic illuminating device AL described above is mounted on a switch box for one to which a general wiring device is mounted, and is mounted on a wall such as a corridor in a house. More specifically, as shown in FIG. 6, the locking means for locking the locking means provided on the cover 51 is locked to a mounting frame 53 made of a synthetic resin material on which locking means is formed. Attached to the switch box. The mounting frame 53 has a middle frame 54 having a square hole exposing the front surface of the cover 51 at the center, which is locked by a locking claw, and a plate frame 55 for locking the plate 56 is provided with mounting screws 57, 57. Installed at Then, in the brightness detecting section 23, the automatic illuminating device A
It is detected that the brightness of the place where L is installed is equal to or less than a predetermined brightness, and the heat ray detecting unit 1 is optically formed by the condensing lens 11 and the detecting element of the pyroelectric element 12. When it is detected that the human body has passed through the detection area, the lighting control circuit 21 is controlled by the output circuit 16 to
Are continuously lit for a predetermined time.

According to the automatic lighting device AL described above,
Since the predetermined area of the floor surface F is illuminated with the light emitted from the LED elements 21, 21,..., The power consumption is small, so that the power supply unit can be easily reduced in size without using a transformer. . In addition, since the light emitted from the LED elements 21, 21,... Is directed to a predetermined area of the floor F by the directivity control cover 24, the predetermined area can be illuminated more brightly. Also, the light emitted from the LED elements 21, 21,... Has a predetermined width of the directivity control cover 24, and the cross-section right angle triangular convex shapes 24a1,. Since the pointing is controlled by the, it is possible to illuminate a wide area with a small shape.

[Second Embodiment] FIG. 7 is an explanatory diagram of directivity control means of an automatic illuminating device according to a second embodiment.
(A) is a diagram showing the relationship between the LED element and the directional control cover,
(B) is a directional control state diagram of a mounting state.

This automatic illuminating device AL differs from the first embodiment only in the configuration of the directivity control means of the illuminating section 2 and the arrangement of the light source, and the other components are the same as those in the first embodiment. Is the same as

The directivity control cover 24 corresponding to the directivity control means has two different directivity characteristics to the above-mentioned area. More specifically, as shown in FIG. 7A, the upper ends H of the LED elements 21 arranged in rows and columns, which are arranged above, but oppose each other, and the lower ends L, which are arranged below, oppose each other. 24a1, ..., 24an having a predetermined width and different heights and inclination angles each having a Fresnel lens shape so as to have different directivities, have an upper end H and a lower end. It is engraved on the part L respectively.

Further, the LED elements 21, 21,
Are LED elements 2 which are the same light sources as in the first embodiment.
Are provided on the same plane so that the central axis of the light distribution and the crossing angle between the directivity control means are different. That is, as shown in FIG. 7A, the intersection angle θ1 between the central axis 21d of the light distribution of the LED elements 21 arranged in rows and columns and the directivity control cover 24 is 70 degrees. Although they are arranged below, they are positioned and arranged by a positioning means (not shown) on the same plane so that the intersection angle θ2 between the central axis of the light distribution and the directivity control cover 24 becomes 90 degrees. In the directional control cover 24, the intersection angle between the central axis 21d of the light distribution characteristics of the LED elements 21, 21,... According to the respective directional control results and the floor F near the wall surface W where the automatic lighting device is installed is set. , As shown in FIG. 7B, the light emitted from the LED elements 21, 21,... Is controlled to be approximately 70 degrees to 50 degrees, and as shown in FIG.
Illuminates a predetermined fan-shaped area of the corridor F from the wall surface W where the is installed.

According to the automatic lighting device AL described above,
Light emitted from the LED elements 21, 21,... Provided on the same plane so as to have a different intersection angle with the directivity control cover 24 is transmitted to a predetermined area of the floor F with at least two different directivity characteristics. Since the light is directed, it is possible to illuminate a wider range than in the first embodiment.

The state detector of the automatic illuminator described above has been described as a heat ray detector for detecting the passage of a human body, which is a state change of a predetermined area such as a floor or a corridor. However, the present invention is not limited to this. For example, a brightness detection unit that detects the brightness of an area where the automatic lighting device is installed may be one that controls the blinking of the light source based on a change in brightness. Further, the directivity control means is not limited to the one having the Fresnel lens shape, and may be one having no directivity control means.

[0029]

According to the first aspect of the present invention, a predetermined area such as a floor surface is illuminated with light emitted from the LED element, so that the power consumption is small. The size can be easily reduced without using any.

The automatic illuminating device according to the second aspect has the same effects as those of the first aspect.
Since the light emitted from the LED element is directed to a predetermined area such as a floor surface, the predetermined area can be illuminated more brightly.

In the automatic illuminating device according to the third aspect, in addition to the effect of the second aspect, the direction of the light emitted from the LED element is controlled by the Fresnel lens shape. To illuminate a wide area.

Further, the automatic illuminating device according to the fourth aspect has the same effects as those of the second or third aspect, and furthermore, the L provided on the same plane so that the intersection angle with the pointing control means is different.
Since the light emitted from the ED element is directed to a predetermined area such as a floor with at least two different directional characteristics, a wider range can be illuminated.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a configuration of an automatic illuminating device according to a first embodiment of the present invention, wherein (a) is a plan view with a cover removed, and (b) is a side sectional view.

FIG. 2 is a block diagram of the automatic lighting device shown in FIG.

FIG. 3 is an explanatory diagram of an LED element used in the automatic lighting device shown in FIG. 1;

4A and 4B are explanatory diagrams of directivity control means of the automatic lighting device shown in FIG. 1, wherein FIG. 4A is a diagram showing a relationship between an LED element and a direction control cover, and FIG.

FIG. 5 is an explanatory diagram of light distribution by an illumination unit of the automatic illumination device shown in FIG. 1;

FIG. 6 is an explanatory view of a method of attaching the automatic lighting device shown in FIG.

FIGS. 7A and 7B are explanatory diagrams of directivity control means of the automatic lighting device according to the second embodiment, wherein FIG. 7A is a diagram showing the relationship between an LED element and a direction control cover, and FIG. It is.

FIG. 8 is a front view of a conventional example.

FIG. 9 is a block diagram of a conventional example.

FIG. 10 is a front view of the nightlight device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat ray detection part (state detection part) 2 Illumination part 21 LED element (light source) 21d Central axis 24 Direction control cover (directional control means) 3 Power supply part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takahiro Yamauchi 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. 72) Inventor Kazuko Kawahara 1048 Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd.

Claims (4)

[Claims] 1. A state detection unit that detects a change in the state of a predetermined area such as a floor surface, an illuminating unit that illuminates the area with an output from the state detection unit, a power supply unit that supplies power to each of the units,
An automatic illuminating device comprising: an illuminating unit, wherein a light source is formed as a plurality of LED elements. 2. The automatic illuminating device according to claim 1, wherein the illuminating unit includes a directional control unit that directs light emitted from the light source to the area. 3. The automatic illuminating device according to claim 2, wherein said pointing control means has a Fresnel lens shape. 4. The directional control means has at least two different directional characteristics to the area,
4. The automatic illuminating device according to claim 2, wherein the light source is provided on the same plane so that the central axis of the light distribution and the crossing angle between the directivity control means are different.