JPH0592911U - Lighting fixture mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] With a simple structure, the reflector can be moved up and down easily and accurately. [Configuration] Each mounting surface 1a of the pair of ceiling support bars 1 and 2,
A pair of positioning side plates 10 are bridged over 2a. A reflection plate 20 having an inverted U-shaped cross section is arranged between the pair of positioning side plates 10 so as to be vertically movable. The lower end portions 20a and 20b on both sides of the reflection plate 20 are attached to the respective mounting surfaces 1 of the ceiling support bars 1 and 2.
a and 2a, respectively. The elastic piece 12 of the positioning side plate 10 holds both lower end portions 20a and 20b of the reflection plate 20 from both sides to position the reflection plate 20 at the center position.
The holding portion 11 of the positioning side plate 10 holds the reflecting plate 20 displaced upward and positions it at the center position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lighting fixture installed between a pair of ceiling support bars in a system ceiling, and more particularly to a structure in which various options such as a louver can be mounted freely.

[0002]

[Prior Art]

 Conventionally, as this type of lighting fixture A, as shown in FIG. 5 to FIG. 8, a pair of lamp sockets 6 are provided in the lighting fixture A that is bridged between the pair of ceiling support bars 1 and 2, and the pair of lamp sockets is provided. A reflector plate 20 having an inverted U-shaped cross section is arranged between the pair of ceiling support bars 1 and 2 below the lamp 7 arranged below the reflector plate 20 so as to be vertically movable. It is known that a louver 30 in the form of a grid is attached to obtain a corner.

By the way, in addition to the component for fixing the louver 30 to the luminaire A, even if the component comes off, it is necessary to take measures to prevent the option from dropping. As an example thereof, as shown in FIG. 5, the height of the luminaire A is kept as it is, and only the reflection plate 20 is lifted from the lower position P ₁ to the upper position P _{2 so} that the ceiling support bar 1 appearing in the generated gap is increased. A string hooking portion 40 is provided on the part, and a drop prevention string 41 connected to the louver 30 is hooked on the string hooking portion 40.

On the other hand, as a means for holding the reflection plate 20 in the upper position P ₂ , as shown in FIG. 6, a screw 42, which is not partially threaded, is passed through an opening 43 of the reflection plate 20 to form the reflection plate. 20 is vertically movable, and the spacer 44 is sandwiched between the screw 42 and the reflector 20 only when the reflector 20 is set at the upper position P ₂ . 46 is a loss prevention cord.

On the other hand, when the louver 30 is attached, it is necessary to accurately center the louver 30 on the illumination device depending on the shape of the louver 30. As an example thereof, as shown in FIGS. 7 and 8, the flange portions 30b on both sides in the longitudinal direction of the louver 30 are lifted above the mounting surfaces 1c, 2c of the ceiling support bars 1 and 2 to move the ceiling support bar 1 , 2 of the louver 30 and the mounting surfaces 1c, 2c of the louver 30, and the centering fitting 45 is inserted into the gap, and the projecting piece 45a of the centering fitting 45 is inserted into the ceiling support bar 1. , 2 are mounted on the mounting surfaces 1c and 2c of the louver 30, respectively, and the positioning portion 45a of the centering fitting 45 is fitted into the longitudinal end portion of the louver 30 to prevent the louver 30 from falling and the lighting fixture. The center is aligned with A.

[0006]

[Problems to be solved by the device]

However, when the spacer 44 is used to hold the conventional reflection plate 20 in the upper position P ₂ , the spacer 44 is a small independent component, and the louver 30 is attached to the louver 30 to prevent it from being lost. Connected to. For this reason, from the viewpoint of construction work, the loss prevention cord 46 becomes slightly longer, and depending on the structure of the louver 30, the loss prevention cord 46 may be visible from below the lighting fixture A without being hidden. there were.

Further, when using the centering metal fitting 45 for centering the conventional louver 30, in order to easily insert the centering metal fitting 45, the mounting surfaces of the ceiling support bars 1 and 2 are arranged. It is necessary to increase the gap generated between the 1c and 2c and the flange portion 30b of the louver 30, and it is necessary to lift the louver 30 higher. For this reason, it is necessary to open a gap to some extent between the lamp 7 and the louver 30, and when the louver 30 has a grid shape for obtaining the light emission angle, it is necessary to narrow the grid interval, It leads to cost increase. If the gap between the lamp 7 and the louver 30 is filled to the limit, it becomes difficult to insert the centering fitting 45, and it becomes difficult to center the louver 30.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is a lighting device having a simple structure and capable of vertically moving a reflector easily and accurately. To provide the mounting structure of.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is constructed such that a pair of positioning side plates 10 facing each other are bridged over the respective mounting surfaces 1a, 2a of a pair of ceiling support bars 1, 2 to form a pair of positioning side plates 10 A reflection plate 20 having an inverted U-shaped cross section is arranged between the ceiling support bars 1 and 2 a of the ceiling support bars 1 and 2 so that the reflection plate 20 has an inverted U-shaped cross section. A pair of elastic pieces 12 are provided which are bent from both lower end portions 10a and 10b of the positioning side plate 10 and elastically sandwich both side lower end portions 20a and 20b sides of the reflecting plate 20. The facing distance between the lower end portions 20a and 20b of the pair 20 is set to be larger than the facing distance between the pair of elastic pieces 12, and at the same time, the reflection plate 20 is provided on the upper edge portion of the pair of elastic pieces 12. Both lower ends of the reflector 20 when positioned at Reflecting plate mounting portions 12c for mounting 0a and 20b are provided respectively, and the holding side 11 for holding the reflecting plate 20 when the reflecting plate 20 is positioned in the upper stage is provided with the positioning side plate 10 described above. It was installed in.

[0010]

[Action]

According to the present invention, since the facing distance between the lower ends 20a and 20b of the reflecting plate 20 is set to be larger than the facing distance between the pair of elastic pieces 12, the reflecting plate 20 is located in the lower stage. When the reflector plate 20 is in the open state, both lower end portions 20a and 20b of the reflector 20 are elastically sandwiched by the elastic pieces 12 from both sides and positioned at the center position of the lighting fixture A. When the reflector 20 is lifted up, both lower end portions 20a and 20b of the reflector 20 are placed on the reflector placement portion 12c provided at the upper edge of the elastic piece 12, and the positioning side plate 10 is positioned. The holding portion 11 provided in the above holds the reflection plate 20 at the upper position P ₂ . As a result, it is possible to easily and accurately position the upper plate at the position P ₂ simply by lifting the reflector 20. Further, the spacer and the loss prevention string as in the prior art are unnecessary.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, a luminaire, which is installed between a pair of ceiling support bars in a system ceiling and to which a louver for obtaining an emission angle can be attached, is illustrated in the present embodiment. The ceiling support bars 1 and 2 are composed of two T-shaped bars horizontally supported by a hanging hanger hanging from a ceiling slab (not shown). The lighting fixture A includes a lighting fixture frame 3 fixed to the ceiling support bars 1 and 2, a positioning side plate 10 attached to the lighting fixture frame 3, a reflection plate 20, and the like.

First, as shown in FIG. 2, the lighting fixture frame 3 is composed of two arch-shaped cross frames 4 and one rod-shaped main frame 5. The two cross frames 4 are bridged between the upper edge portions 1a and 2a of the ceiling support bars 1 and 2 at two locations in the longitudinal direction of the ceiling support bars 1 and 2, respectively. At both ends in the direction, inverted U-shaped mounting portions 4a mounted on the upper edge portions 1a and 2a of the ceiling support bars 1 and 2 and step portions 1a and 2b of the upper edge portions 1a and 2a, respectively. An engaging piece 4b is formed on the ceiling support bar 1, 2 by the mounting portion 4a and the engaging piece 4b. There is. On the other hand, the main frame 5 is fixed to the upper surface of the cross frame 4 at the center in the longitudinal direction and extends parallel to the ceiling support bars 1 and 2. A ballast box (not shown) is attached to the central upper surface of the main frame 5 in the longitudinal direction, and a pair of lamp sockets 6 to which lamps 7 are connected are attached to the lower surfaces on both sides in the longitudinal direction. .

The trapezoidal thin plate-shaped positioning side plates 10 shown in FIG. 3 are respectively arranged on the inner surface sides of the pair of lamp sockets 6, and the cross-sectional shape between the positioning side plates 10 is downward. An inverted gutter-shaped reflection plate 20 having an opening at the top is arranged above the lamp 7 so as to be vertically movable. Each positioning side plate 10 is provided with an opening 8 through which the lamp 7 penetrates at the center thereof. The lamp 7 penetrates the opening 8 and both side faces 10a and 10b of the positioning side plate 10 are attached to the ceiling support bar. By mounting the positioning side plates 10 on the mounting surfaces 1c and 2c of 1 and 2, respectively, the inclination of the positioning side plate 10 in the front-rear and left-right directions is regulated. Further, a pair of elastic pieces 12 and a pair of holding portions 11 are respectively bent and formed in a substantially L shape toward the reflection plate 20 side on both side surfaces 10a and 10b of the positioning side plate 10. Each elastic piece 12 has a tip portion 12a side projecting further inward than a base end portion 12b side, and a distance between the lower end portions 20a and 20b of the reflection plate 20 is larger than a distance between the elastic pieces 12 facing each other. The distance is set larger. Further, the upper edge portion of the elastic piece 12 is provided with respective reflecting plate mounting portions 12c for mounting both lower end portions 20a and 20b of the reflecting plate 20 when the reflecting plate 20 is positioned in the upper stage. ing. As a result, the elastic pieces 12 are elastically contacted with the both side surfaces 20a of the reflection plate 20, respectively, so that the reflection plate 20 is positioned at the center position, and when the reflection plate 20 is lifted, both lower end portions 20a of the reflection plate 20 are moved. , 20b are placed on the reflecting plate placement portion 12c of the elastic piece 12, and the holding piece 11 of the positioning side plate 10 holds the upper reflecting plate 20.

Next, as a louver to be mounted on the lighting fixture A, for example, a lattice-shaped louver 30 for obtaining a light emitting angle is used. As shown in FIG. 1B, this lattice-shaped louver 30 has a pair of left and right flange portions 30a extending on both sides in the width direction thereof. The louvers 30 are mounted on the respective mounting surfaces 1a 'and 2a' of the louver 30. Further, the louvers 30 are elastically contacted with the elastic pieces 12 of the positioning side plates 10 on both side surfaces of the louver 30, so that the louvers 30 are placed at the center of the luminaire A. It is supposed to be located in a position.

In the above structure, when the louver 30 is not attached to the lighting fixture A, as shown in FIG. 1 (a), the reflection plate 20 is mounted on the mounting surfaces 1 a ′ and 2 a ′ of the ceiling support bars 1 and 2. 4A, and as shown in FIG. 4A, the pair of elastic pieces 12 of the positioning side plate 10 are spring-biased from both sides. Further, since the pair of holding portions 11 of the positioning side plate 10 are arranged on both side surface portions 20a and 20b of the reflecting plate 20 with a slight gap therebetween, even if the reflecting plate 20 resists the spring force of the elastic piece 12. Even if it is displaced, the displacement is restricted by the pair of holding portions 11. As a result, the reflector 20 can be easily and accurately positioned at the center position of the luminaire A at the lower position P ₁ .

On the other hand, when mounting the louver 30 on the lighting fixture A, first, as shown in FIG. 4B, the reflection plate 20 is lifted above the elastic piece 12 of the positioning side plate 10. When the elastic piece 12 is bent and deformed below the reflection plate 20 to hold the reflection plate 20 in the upper position P ₂ , both side surfaces 20a of the reflection plate 20 contact the holding portion 11 of the positioning side plate 10 at the same time. .. As a result, the reflector 20 is accurately positioned at the center position of the illuminator A at the upper position P ₂ . Then, as in the conventional case, the fall prevention string 41 (see FIG. 5) is locked in the gap between the ceiling support bars 1 or 2 caused by the upward displacement of the reflection plate 20.

In this state, the louver 30 is mounted on the lighting fixture A. In order to mount the flange portion 30a of the louver 30 on the mounting surfaces 1a 'and 2a' of the ceiling support bars 1 and 2, respectively. The width of the louver 30 is set larger than the distance between the mounting surfaces 1a 'and 2a' of the ceiling support bars 1 and 2. Therefore, first, one flange portion 30a of the louver 30 is inserted into a gap between the mounting surface 1a 'of the ceiling support bar 1 and one elastic piece 12 of the positioning side plate 10, and one side surface of the louver 30 is inserted. By pushing one elastic piece 12 apart, the other brim portion 30a of the louver 30 is inserted into the gap between the mounting surface 2a of the other ceiling support bar 2 and the other elastic piece 12 of the positioning side plate 10. can do . In this way, when the louver 30 is laid over the ceiling support bars 1 and 2 and then the hand is released from the louver 30, the elastic pieces 12 of the positioning side plate 10 are elastically contacted with both side surfaces of the louver 30, respectively, and the louver 30 is lit. It is positioned at the center position of luminaire A in the position below.

As described above, when the louver 30 is attached, the reflecting plate 20 can be set from the lower position P ₁ to the upper position P ₂ by one touch by the elastic piece 12 of the positioning side plate 10, so that the conventional Compared to the case where such a spacer or loss prevention string is used, the construction is easier and the problem that the loss prevention string can be seen is eliminated. Therefore, the appearance of the lighting fixture A can be improved. it can. Further, centering can be performed only by inserting the flange portion 30a of the louver 30 into the gap between the elastic piece 12 of the positioning side plate 10 and the mounting surfaces 1a 'and 2a' of the ceiling support bars 1 and 2. Unlike the case of inserting a centering metal fitting which is a separate component from the conventional louver, the centering work of the louver 30 becomes extremely easy, and the working time can be greatly shortened. In addition, when the louver 30 is inserted, it is not necessary to bring the louver 30 close to the lamp 7 side, so that it is not necessary to make a large gap between the lamp 7 and the louver 30. As a result, the cost can be reduced as compared with the conventional example in which the lattice spacing is narrowed in order to obtain the light emitting angle of the louver 30.

Further, in the present embodiment, a locking piece 4b is provided on the mounting portion 4a of the cross frame 4 mounted on the ceiling support bars 1 and 2, and the locking piece 4b is attached to the ceiling support bars 1 and 2. Since the step portions 1b and 2b of the above are respectively engaged, the cross frame 4 is fixed to the ceiling support bars 1 and 2 only by pushing the cross frame 4 from above to prevent the cross frame 4 from being pulled out and fixed to the ceiling support bars 1 and 2. Therefore, there is an advantage that the lighting fixture frame 3 can be easily attached to the ceiling support bars 1 and 2.

In the above-mentioned embodiment, the lattice louvers are used as the louvers attached to the lighting fixture A, but the present invention is not limited to this, and other types of louvers or various lighting fixture options can be widely used. It is possible.

[0021]

[Effect of the device]

 As described above, the present invention is formed by bending a pair of positioning side plates spanning each mounting surface of a pair of ceiling support bars, a vertically movable reflecting plate, and both lower end portions of the positioning side plates. A pair of elastic pieces, the distance between the lower ends of the reflector is set to be larger than the distance between the pair of elastic pieces, and the upper edge of the pair of elastic pieces is reflected. Reflector mounting parts are provided for mounting both lower ends of the reflector when the plate is positioned on the upper level, and a holding part for holding the reflective plate when the reflective plate is positioned on the upper level. Since the configuration is provided on the positioning side plate, when the reflector is positioned in the lower stage, both lower ends of the reflector are positioned in the center position by the elastic pieces, and the reflector is positioned in the upper stage. The elastic plate mounting part of the elastic piece and the holding part of the positioning side plate when Reflector is held Te. As a result, by simply lifting the reflector, the reflector can be easily and accurately positioned with the center aligned with the upper position, greatly reducing the working time. Moreover, the conventional spacers and loss-prevention straps are not required, and workability can be improved.

Further, since the pair of elastic pieces are opposed to each other, when installing the equipment parts such as the louver in a state where the reflection plate is located at the upper position, the equipment parts should be arranged between the elastic pieces. For example, it is possible to accurately position the equipment part at the center position of the lighting fixture by the pair of elastic pieces.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a lighting device used in an embodiment of the present invention, in which (a) is a state in which a louver is not attached,
(B) is sectional drawing which shows the state which does not attach a louver.

FIG. 2 is a partial perspective view of the lighting fixture frame of the above.

FIG. 3 is a perspective view showing a positioning side plate of the same.

FIG. 4 is a perspective view showing a moving state of the reflection plate, wherein FIG. 4A is a perspective view in which the reflection plate is located at a lower position, and FIG. 4B is a perspective view in which the reflection plate is located at an upper position.

FIG. 5 is an exploded perspective view showing a conventional lighting fixture.

FIG. 6 is an exploded perspective view showing a conventional mechanism for holding a reflection plate in an upper position.

FIG. 7 is an exploded perspective view showing a mounting structure using a conventional centering fitting.

FIG. 8 is a cross-sectional view showing a state in which a conventional louver is attached.

[Explanation of symbols]

1,2 ceiling support bars 3 luminaire frame 6 lamp socket 7 lamp 10 positioning plate 11 holder 12 the elastic pieces 20 reflector 30 louver 30a flange portion A luminaire P ₁ lower position P ₂ the upper position

Claims (1)

[Scope of utility model registration request] 1. A pair of positioning side plates facing each other are bridged over the respective mounting surfaces of a pair of ceiling support bars, and a reflector having an inverted U-shaped cross section is vertically movable between the pair of positioning side plates. And the lower ends of both sides of the reflector are respectively placed on the respective mounting surfaces of the ceiling support bar, and the pair of lower ends of the positioning side plates elastically sandwich the lower ends of both sides of the reflector. Elastic piece is provided, the facing distance between the lower end portions of the reflecting plate is set to be larger than the facing distance between the pair of elastic pieces, and the reflecting plate is provided at the upper edge portion of the pair of elastic pieces. Reflector mounting portions are provided for mounting both lower end portions of the reflector when positioned in the upper stage, and the holding portion for holding the reflective plate when the reflector is positioned in the upper stage is positioned as described above. A mounting structure for a lighting fixture, which is provided on a side plate for use.