JPH06243713A - Luminaire - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a lighting fixture with improved workability in attaching and detaching the fixture body to the ceiling. [Structure] When the horizontal step portions 46 at both ends of the mounting bracket 42 mounted on the upper surface 34 of the instrument body 32 are placed on the upper flange 27 of the ceiling bar 26, the opening 49 of the mounting bracket 42 is formed.
The hooking piece 55 of the locking fitting 52 hanging from the ceiling bar 2
The upper flange 27 of 6 and the locking piece 4 of the lower end of the mounting bracket 42.
Engage with 7 to hold it. The other end of the locking metal fitting 52 is almost at the center of the instrument body 32, and a release screw 56 is inserted from the elongated hole 51 of the mounting metal fitting 42 and screwed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded luminaire used for a system ceiling or the like, and more particularly to a luminaire improved in workability of mounting and dismounting on a ceiling bar installed on a ceiling. It is a thing.

[0002]

12 and 13 show, for example, Japanese Patent Publication No. 4-6.
It is a longitudinal sectional view showing an example of the conventional lighting fixture for a system ceiling disclosed in Japanese Patent No. 091, and a perspective view showing the important section. Reference numeral 1 is a ceiling plate of a system ceiling, 2 is a ceiling frame suspended from the ceiling and fixed, 3 is a head of the ceiling frame 2, and 4 is a keyway provided in the ceiling frame 2. 5 is a lighting fixture embedded in the ceiling surface, 6 is a pair of side channels (only one of which is shown in the figure) forming the left and right sides of the lighting fixture 5, and the socket 7, the reflector 8 and other fixtures necessary for the lighting fixture Support kind. Further, 9 is a cushion material and 10 is a lead wire.

Reference numeral 11 denotes a mounting member attached to the side channel 6, which is formed in a stepped shape, and has a slope portion 12, a flat portion 13 formed below the slope portion 12, and a downward portion from the tip of the flat portion 13. It has a vertical portion 14 formed toward it, and a supporting piece 15 is attached to the inner side surface of the slope portion 12 by welding or the like. The upper end of 16 is elastically engaged with the side channel 6, and the mounting bracket 11 is attached to the side channel 6.
Is a linear spring for attaching to, and the tip of the spring is inserted and engaged from the rear surface to the front surface of the mounting member 11 and is rotated by the elastic force to fix the mounting member 11 to the side channel 6.

Reference numeral 17 is a hook, and 18 is a keyway 4 of the ceiling frame 2.
A plate-like hooking portion provided at the tip of the hooking tool 17 for fitting below the hook, 19 is a shaft for fixing the hooking portion 18, 20
Is a handle of the hook 17. 21 is a passage hole formed in the support piece 15 for passing the hooking portion 18 of the hooking tool 17,
Reference numeral 22 is a groove for sliding the shaft 18 of the hook 17, which is composed of an inclined groove 23 that is continuous with the passage hole 21 and inclines obliquely upward, and a flat groove 24 that follows the inclined groove 23. Reference numeral 25 is a decorative screw for mounting and fixing the reflection plate 8 on the ceiling frame 2.

Next, the operation of the luminaire constructed as described above will be described. To attach the lighting fixture 5 to the ceiling frame 2,
First, the mounting bracket 11 of the lighting fixture 5 is placed on the head 3 of the ceiling frame 2. At this time, the lower surface of the flat portion 13 of the mounting bracket 11 is placed on the head portion 3 of the ceiling frame 2, the inner side surface of the vertical portion 14 faces the outer side surface of the head portion 3, and the support piece 15 is attached to the ceiling frame 2. It faces the inner surface. In this way, the vertical portion 14 and the support piece 15 prevent the mounting bracket 11 from being displaced laterally (left and right in the drawing) with respect to the ceiling frame 2.

Next, the hooking portion 18 of the hooking tool 17 is inserted into the passage hole 21 of the support piece 15, and the handle 20 is inserted into the inclined groove portion 2.
3 to the flat groove 24. By this movement, the end portion of the hook portion 18 is fitted and engaged below the key groove 4 of the ceiling frame 2, and the fitting 11 is engaged with the ceiling frame 2. When the mounting bracket 11 and the ceiling frame 2 are combined in this way, the ceiling frame 2
Even if the lighting fixture 5 vibrates in the vertical direction, the two vibrate together and the mounting fixture 11, and therefore the lighting fixture 5, does not float up from the ceiling frame 2. Finally, the reflector 8 is placed on the ceiling frame 2 and fixed with the decorative screws 25, and the mounting bracket 1
1 and the hook 17 etc. are hidden. To remove the lighting fixture 5 from the ceiling frame 2, first loosen the decorative screw 25 to remove the reflector 8 and then move the hook 17 from the flat groove 24 to the passage hole 21. The engagement with 4 is released. In this way, the lighting fixture 5 is removed from the ceiling frame 2.

[0007]

In the conventional lighting fixture configured as described above, when fixing the lighting fixture 5 to the ceiling frame 2, the through hole 21 of the support piece 15 fixed to the mounting bracket 11 is provided.
Since it is necessary to insert the hooking tool 17 into the and move it, workability is poor. Moreover, in order to hide the mounting bracket 11 and the hook 17, the reflector 8 is placed on the ceiling frame 2 afterwards and the decorative screw 2
Since it must be fixed at 5, it takes time to assemble it on the ceiling.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain an illuminating device which is easy and easy to attach and detach mounting fixtures and attach reflectors.

[0009]

A lighting apparatus according to the present invention comprises a pair of ceiling bars having an I-shaped cross section, wherein upper and lower flanges are provided at both ends of a web, and the lower flanges are fixed to a ceiling. A flat portion, both ends of the flat portion are bent at substantially right angles in the same direction, and a rising portion having a horizontal portion abutting the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar at the tip portion Piece, an opening provided in the flat part in the vicinity of the rising piece, a holding piece provided in the vicinity of the opening, and a mounting bracket made of an elongated hole provided in the central part of the flat part, and at both ends. It has a flange that abuts the lower flange of the ceiling bar, and an elongated hole corresponding to the elongated hole of the mounting bracket is provided on the center side, and the lamp, ballast, reflector, etc. are housed and the mounting bracket is fixed on the upper surface. The main body of the pot with a roughly cross section, A pair of substantially L-shaped locking metal fittings made of a flexible material and having a hanging portion formed by bending a flat portion and one end of the flat portion at a substantially right angle, and having a hooking piece formed at a tip portion to be locked to an upper flange of a ceiling bar. The flat part of the locking metal fitting is inserted into the holding piece of the mounting metal fitting, and the hanging piece is inserted into the opening of the mounting metal fitting so that it can be slidably mounted on the mounting metal fitting.
At the other end, a release screw inserted from the oblong hole of the instrument body and the mounting bracket is screwed.

Further, in the lighting equipment according to the present invention, an upper flange and a lower flange are provided at both ends of the web, and a pair of ceiling bars having an I-shaped cross section in which the lower flange is fixed to the ceiling, a flat surface portion and a flat surface portion. Both ends of are bent at substantially right angles in the same direction, and the leading end has a horizontal portion that abuts the upper flange of the ceiling bar and a locking piece that is arranged outside the upper flange of the ceiling bar. A mounting bracket consisting of an opening provided close to the rising piece, a holding piece provided near the opening, and a screw hole provided almost in the center of the flat surface, and lower flanges of the ceiling bar at both ends. Has a flange that abuts against, the central part is provided with an opening corresponding to the screw hole of the mounting bracket, the lamp, ballast, reflector, etc. are accommodated and the mounting bracket is fixed to the top surface Device body and elastic material It has a flat part, and both ends of the flat part are bent at substantially right angles in the same direction, and has a hanging piece at the tip that is hooked to the upper flange of the ceiling bar. It consists of a metal fitting and the flat surface of the locking metal fitting is inserted into the holding piece of the fitting, and the hanging pieces are inserted into the openings of the fitting and placed on the fitting. The release screw screwed into the screw hole is abutted.

Further, the luminaire according to the present invention is provided with an upper flange and a lower flange at both ends of the web, and a pair of ceiling bars having an I-shaped cross section in which the lower flange is fixed to the ceiling, a flat portion, and a flat portion. Both ends of are bent at substantially right angles in the same direction, and the leading end has a horizontal portion that abuts the upper flange of the ceiling bar and a locking piece that is arranged outside the upper flange of the ceiling bar. An opening provided in the vicinity of the rising piece, a holding piece provided in the vicinity of the opening, and a mounting bracket made up of two elongated holes provided on the central side of the flat surface portion, and a ceiling bar at both ends. It has a flange that abuts the lower flange, has a long hole corresponding to the long hole of the mounting bracket on the center side, accommodates lamps, ballasts, reflectors, etc. A pot-shaped device body and a flat surface , An operation in which one end of the flat surface portion is bent at a substantially right angle and a hooking piece for engaging with the upper flange of the ceiling bar is formed at the tip end, and is bent in the same direction as the hanging piece at the rear end It consists of a pair of locking fittings provided with a piece, and the flat surface of the locking fitting is inserted into the pressing piece of the mounting fitting, and the hanging piece is inserted into the opening of the mounting fitting.
Further, the operating piece is inserted into the mounting metal fitting and the elongated hole of the instrument body, slidably disposed on the mounting metal fitting, and a spring is interposed between the operating pieces of both the locking metal fittings.

Furthermore, the luminaire according to the present invention is provided with a pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of the web, and the lower flange is fixed to the ceiling, a flat portion and a flat surface. Both ends of the rising part are bent at substantially right angles in the same direction, and a rising part and a flat part having a horizontal part that abuts the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar at the tip part. A mounting bracket consisting of an opening provided close to the rising piece, a holding piece provided near the opening, and an elongated hole provided in the center of the flat surface, and lower flanges of the ceiling bar at both ends. It has a flange that abuts against, the central part has a long hole corresponding to the long hole of the mounting bracket, the lamp, ballast, reflector, etc. are accommodated and the mounting bracket is fixed on the top surface Of the instrument body and elastic material The flat part and both ends of the flat part are bent at substantially right angles in the same direction, and a hanging piece formed with a hooking piece that engages with the upper flange of the ceiling bar is provided at the tip, and the central part is bent. It is composed of a locking metal fitting that is given elasticity by the formed operation part, and the flat surface portion of the locking metal fitting is inserted into each pressing piece of the mounting metal fitting, and the hanging piece is inserted into each first opening of the mounting metal fitting. Further, the operating portion is inserted into the mounting metal fitting and the elongated hole of the instrument main body, and is slidably disposed on the mounting metal fitting.

[0013]

To mount the lighting fixture, push it into the ceiling and drop it naturally, and the hooking piece of the locking metal fitting engages with the locking portion of the ceiling bar. Further, in order to remove the lighting fixture, the release screw is operated from below the attachment fitting to release the engagement fitting from the engagement portion of the ceiling bar.

To remove the luminaire, the central part of the locking metal fitting is pushed up from the lower surface by the tip of the release screw to bend the locking metal fitting, and the locking metal fitting is released from the locking portion of the ceiling bar.

To remove the lighting fixture, the operating piece of the locking metal fitting is pressed inward to compress the spring, and the locking metal fitting is released from the locking portion of the ceiling bar.

Further, to remove the lighting fixture, the operating portion of the locking metal fitting is pushed inward to bend it, and the locking metal fitting is released from the locking portion of the ceiling bar.

[0017]

【Example】

Embodiment 1 FIG. 1 is a longitudinal sectional view showing an essential part of a first embodiment of the present invention, FIG. 2 is an operation explanatory view of FIG. 1, and FIGS. 3 and 4 are perspective views showing an essential part of FIG. 1, respectively. is there. Reference numeral 26 denotes a pair of ceiling bars that are erected on the ceiling and have a section I shape and are suspended and fixed in parallel from the ceiling. 27 is an upper flange formed on the upper portion of the web 28 of the ceiling bar 26, 29 is a locking portion formed on the left and right lower surface portions of the upper flange 27, and 30 is a lower flange formed on the lower portion of the web 28. 31 is a lighting fixture, 32
Is a lighting fixture main body (apparatus main body) having a pan-shaped cross section and a gutter shape, and reference numerals 33 and 34 are a side reflection part and a top reflection part which form the main part 32 of the fixture. Reference numeral 35 denotes a flange portion formed at a lower end portion of the side surface reflection portion 33, which is brought into contact with the lower flange 30 of the ceiling bar 26.

A lamp 36, a ballast 37, a reflection plate 38 having a V-shaped cross section, and other various parts (not shown) such as sockets and electric wires necessary for lighting equipment are mounted inside the equipment main body 32. There is. In addition, 39 is a flange portion provided at both ends of the reflection plate 38, 40 is a reflection plate pressing piece having an L-shaped cross section attached to the upper surface reflection portion 34 of the instrument body 32, and the flange portion 39 of the reflection plate 38 is Removably supported. Four
Reference numeral 1 denotes a long hole provided in the upper reflecting portion 34 of the instrument body 32, through which a head of a release screw (described later) penetrates.

Reference numeral 42 denotes a U-shaped mounting bracket for mounting the luminaire 31, which has a flat portion 43 and a stepped portion at both ends (which will be described later). The flat portion 43 is an outer surface 44 of the upper surface of the luminaire body 32.
It is fixed to the bracket with a mounting tool (not shown) such as a screw. Four
5 is a rising piece bent at both ends of the mounting bracket 42 so as to be orthogonal to the flat surface portion 43, and 46 is orthogonal to the rising piece 45 (the flat surface portion 42).
Parallel with the upper flange 27 of the ceiling bar 26
The horizontal stepped portion 47 abutted against is a locking piece that is bent downward (parallel to the rising piece 45) from the end of the horizontal stepped portion 46 and bent downward. The rising piece 45 is in a state where the web 28 of the ceiling bar 26 is vertically raised upward, the horizontal step portion 46 is in contact with the upper flange 27 of the ceiling bar 26, and the locking piece 47 is further provided. Is suspended from the outer surface 48 of the upper flange 27 of the ceiling bar 26, and the ceiling bar 2
6 is abutted. Reference numeral 49 denotes openings provided at both ends of the flat surface portion 43 of the mounting bracket 42 for inserting locking metal fittings (described later), and 50 denotes openings on both sides of the opening 49 to prevent the locking metal fittings from floating upward. It is a holding piece provided. In addition, 51 is a long hole provided substantially in the center of the mounting bracket 42 for inserting a release screw (described later), and is slightly smaller than the long hole 41 provided in the instrument body 32.

Reference numeral 52 denotes the lighting fixture 31, that is, the mounting bracket 4.
2 is a locking metal fitting for attaching 2 to the ceiling bar 26, and has a cross section L
The mounting bracket 42 is made of an elastic material having a V shape.
Separately attached to the left and right sides. 53 is a mounting bracket 5
2 is a flat surface portion, 54 is a hanging piece that is bent at one end of the flat surface portion 53 orthogonally to the flat surface portion 53, and 55 is a hooking piece that is formed by bending the tip of the hanging piece 54 into a V shape. . And
The flat surface portion 53 of the locking metal fitting 52 is the flat surface portion 43 of the mounting metal fitting 42.
The hanging piece 54 is brought into contact with the upper surface, and
The hooking piece 55 provided at the tip of the hanging piece 54 is engaged with the engaging portion 29 of the ceiling bar 26. Reference numeral 56 denotes a release screw which is inserted into the long hole 41 provided in the instrument body 32 and the long hole 51 provided in the mounting bracket 42 and screwed into the screw hole 57 provided at the other end of the locking bracket 52.
2 and the locking fitting 52 are connected.

Next, the operation of the first embodiment constructed as described above will be described. In the following description, the lighting fixture 3
The mounting and demounting of No. 1 will be described only for the portions shown in the drawings, but the same applies to portions not shown in the drawings. First, the operation of mounting the lighting fixture 31 on the ceiling surface is as follows. The instrument main body 32 to which the reflection plate 38 is attached is pushed up while being tilted from between the pair of ceiling bars 26, and is made horizontal in the ceiling and pulled down. By doing so, the flanges 35 provided on the lower end portions of the side surface portions 33 of the instrument body 32 are attached to the ceiling bar 26.
Abuts the lower flange 30 of the. Further, the lower end horizontal portion 46 of the mounting bracket 42 contacts the head flange 27 of the ceiling bar 26, and the locking piece 47 hangs on the outer side surface 48 of the upper flange 27. Therefore, the movement of the instrument body 32 to the left and right is prevented.

When the lower end horizontal portion 46 of the mounting member 42 is brought into contact with the head flange 27 of the ceiling bar 26 as described above, the locking member 5 is attached to the locking portion 29 of the ceiling bar 26.
The hooking piece 55 provided at the end of 2 is locked. That is, when the attachment fitting 42 is pulled down, the flat portion 53 of the locking fitting 52 is
One end of is fixed by a release screw 56, and the other end is prevented from moving upward by a pressing piece 50. Therefore, the hanging piece 54 and the hooking piece 55 of the locking metal fitting 52 are directed toward both side surface parts 33 of the instrument body 32. The bending and hooking piece 55 descends in this state. Thus, the lower end horizontal portion 46 of the mounting bracket 42 is
When the hook abuts the head flange 27 of the ceiling bar 26, the hooking piece 55 of the locking metal fitting 52 is locked to the locking portion 29 of the ceiling bar 26. Therefore, the device body 32 is prevented from being lifted up.

Next, the operation of removing the luminaire 31 from the ceiling surface is as follows. First, the reflector 38 attached to the instrument body 32 is removed. Since the flange portion 39 of the reflection plate 38 is engaged with the reflection plate pressing piece 40 of the instrument body 32, the engagement between the flange portion 39 and the reflection plate pressing piece 40 may be released. Then, the release screw 56 screwed to one end of the locking metal fitting 52 is loosened while being rotated so as to be pushed up from below. This prevents the other end of the locking metal fitting 52 from being lifted upward by the pressing piece 50, so that the locking metal fitting 52 is inclined and the hooking piece 55 of the ceiling bar 26 is held, as shown in FIG. Locking part 29
Get out of. Thus, when the release screw 56 is moved to the end of the elongated hole 51 of the mounting member 42, the hanging piece 54 and the hooking piece 55 of the locking metal piece 52 move to the position shown by the broken line in FIG.
It completely disengages from the locking portion 29 of the ceiling bar 26. In this state, the instrument body 32 can be removed from the ceiling surface by tilting and lowering the instrument body 32 while pushing the instrument body 32 into the ceiling.

Embodiment 2 FIG. 5 is a longitudinal sectional view showing an essential part of a second embodiment of the present invention, FIG. 6 is an operation explanatory view of FIG. 5, and FIG. 7 is a perspective view showing an essential part of FIG. . Reference numeral 52 denotes a locking metal fitting for mounting the mounting metal fitting 42 to the ceiling bar 26, which is an integrated structure of the left and right separate locking metal fittings shown in the first embodiment (FIGS. 1 to 4).
It is formed in a substantially U-shaped cross section. In the second embodiment,
The flat surface portion 53 of one locking metal fitting 52 is placed on the upper surface of the flat surface portion 43 of the mounting metal fitting 42, and the hanging pieces 54, 54 of the locking metal fitting 52 are placed.
Is penetrated downward from the openings 49, 49 of the mounting bracket 52, and the hooking pieces 55, 55 are locked to the locking portions 29, 29 provided on the head flanges 27, 27 of the ceiling bars 26, 26. Reference numeral 56 denotes a release screw screwed to the central portion of the mounting member 42, the tip of which comes into contact with the lower surface of the flat portion 53 of the locking member 52.

Next, the operation of the second embodiment constructed as described above will be described. The lighting fixture 31 is attached to the ceiling bars 26, 26.
The operation of contacting with is similar to that in the case of the first embodiment. The operation of removing the lighting fixture 31 from the ceiling surface is as follows. First, the reflector 38 attached to the instrument body 32 is removed. Next, in order to release the locking of the locking metal fitting 52, a release screw 56 screwed to the central portion of the mounting metal fitting 42 is used.
Rotate by pushing up from below and tighten. At this time, both ends of the locking metal fitting 52 are attached to the mounting metal fitting 42.
Lifting up is prevented by the pressing pieces 50, 50 provided at both ends of the. Therefore, as shown in FIG. 6, only the central portion of the locking fitting 52 is lifted, and the hooking pieces 55, 55 are locked by the locking portions 29, 29 of the ceiling bars 26, 26.
Get out of. In this state, the instrument body 32 can be removed from the ceiling surface by tilting and lowering the instrument body 32 while pushing the instrument body 32 into the ceiling.

Embodiment 3 FIG. 8 is a vertical cross-sectional view showing an essential part of a third embodiment of the present invention, and FIG. 9 is an operation explanatory view of FIG. 52, 52 are mounting brackets 4
2 is an engaging metal fitting for attaching to the ceiling bar 26, and the left and right separate engaging metal fittings shown in the first embodiment (FIGS. 1 to 4) are formed as a pair via a spring. Reference numeral 58 is an operation piece provided at the end of the mounting member 42 on the opposite side of the hook piece 55, and is parallel to the hanging piece 54 and hangs in the same direction. Reference numeral 59 denotes a spring locking piece, which is provided in the central portion of the operation piece 58 so as to be orthogonal to the operation piece 56 in a direction in which the operation pieces 56, 56 face each other.
A coil spring 60 is interposed between the operation pieces 58, 58, and is attached to the spring locking pieces 59, 59. 6
Reference numerals 1 and 61 are rectangular holes provided in the central portion of the mounting bracket 42, and 62 is a rectangular hole provided in the upper surface portion 34 of the instrument body 32.

In the third embodiment, a pair of locking fittings 52,
52 is brought into contact with the upper surface of the flat surface 43 of the mounting bracket 42, the hanging pieces 54, 54 are hung downward from the openings 49, 49 provided at both ends of the mounting bracket 42, and the hooking pieces 55, 55 are connected to the ceiling bar. 26, 26 are engaged with the engaging portions 29, 29 of the upper flanges 27, 27. Further, the operation pieces 58, 58 are inserted into the hole portion 61 of the mounting member 42 and the hole portion 62 of the instrument body 32. In this way, the pair of locking metal fittings 52, 52 is attached to the pressing piece 5.
The coil spring 60 is urged by the elasticity of the coil spring 60 in the direction of the ceiling bars 26, 26 in a state where the floating is prevented by 0, 50.

Next, the operation of the third embodiment constructed as above will be described. The lighting fixture 31 is attached to the ceiling bars 26, 26.
The operation of contacting with is almost the same as the case shown in the first embodiment. However, the lower end horizontal portions 46, 4 of the mounting bracket 42
When 6 is in contact with the upper flanges 27, 27 of the ceiling bars 26, 26, the locking fittings 52, 52 are restrained from moving upward by the holding pieces 50, 50 of the mounting fitting 42, so that the hooking piece 55. 55 move in the direction of the coil spring 60 by the inner surfaces of the upper flanges 27, 27 of the ceiling bars 26, 26, so that the coil spring 60 is compressed. Next, the lower end horizontal portions 46, 46 of the mounting bracket 42 are attached to the ceiling bar 2.
At the same time as being mounted on the upper flanges 27, 27 of the coil springs 6, 26, the hooking pieces 55, 55 of the locking metal fitting 52 have coil springs 60.
Is urged by the coil spring 60 in the direction opposite to the coil spring 60 and hooked on the locking portions 29, 29 of the ceiling bars 26, 26. This prevents the device body 32 from floating upward.

Next, in order to remove the locking metal fitting 52, the operation pieces 58, 58 of the pair of locking metal fittings 52 are pinched with fingers and pressed. By doing so, the coil spring 60 provided between the operation pieces 58, 58 is compressed, and the pair of locking metal fittings 52 move toward the central portion of the instrument body 32 as shown in FIG. Is a locking portion 29, 29 of the ceiling bar 26, 26
Get out of. At this time, the locking metal fitting 52 has the pressing pieces 50, 5
By 0, the upward lifting is suppressed. In this way, the instrument body 32 can be removed from the ceiling bars 26, 26.

Embodiment 4 FIG. 10 is a longitudinal sectional view showing the main part of a fourth embodiment of the present invention,
FIG. 11 is an operation explanatory view of FIG. 52 is a mounting bracket 4
2 is a locking metal fitting for attaching 2 to the ceiling bars 26, 26,
The left and right separate locking fittings shown in the first embodiment (FIGS. 1 to 4) are integrally formed by using an elastic material. Reference numeral 63 denotes a V-shaped operation portion provided at the center of the locking metal fitting 52, and the bending of the locking metal fitting 52 is caused when the locking metal fitting 52 is pressed inward.

In the fourth embodiment, the flat surface portion 53 of the locking metal fitting 52 which is integrally formed is placed on the upper surface of the flat surface portion 43 of the mounting metal fitting 42, and the V-shaped operating portion 63 is mounted on the mounting metal fitting 42. The hole 61 and the hole 62 of the instrument body 32 are inserted, and the hanging piece 54,
54 from the openings 49, 49 of the mounting bracket 42,
The hooking pieces 55, 55 are attached to the locking portions 29 of the ceiling bars 26, 26,
Lock at 29. In this way, the locking metal fitting 52 is attached to the pressing piece 5.
With the 0, 50 being prevented from rising,
The elasticity of the operating portion 63 urges the ceiling bars 26, 26 in the direction.

Next, the operation of the fourth embodiment constructed as above will be described. The lighting fixture 31 is attached to the ceiling bars 26, 26.
The operation of placing on is substantially the same as the case shown in the third embodiment. However, the coil spring (FIGS. 8 and 9) provided on the locking fitting 52 is not compressed, but the V-shaped operation portion 63 is compressed.

In order to remove the locking fitting 52, first, the operating portion 63 of the locking fitting 52 is pinched with a finger and pressed. Then, as shown in FIG. 11, both ends of the locking fitting 52 move toward the central portion of the instrument body 32, and the hooking pieces 55, 55.
Is disengaged from the locking portions 29, 29 of the ceiling bars 26, 26.
At this time, the locking metal fitting 52 is the pressing piece 50 of the mounting metal fitting 42,
Uplifting is suppressed by 50. In this way, the instrument body 32 can be removed from the ceiling bars 26, 26.

[0034]

As is apparent from the above description, according to the lighting equipment of the present invention, when the lighting equipment is mounted on the ceiling bar, the lighting equipment in the assembled state is pushed into the ceiling as it is, and the lighting equipment is naturally installed. Since the hooking piece of the locking fitting engages with the locking portion of the ceiling bar simply by dropping it into, the ceiling work of the lighting fixture becomes extremely easy. Further, when releasing the locking fitting of the lighting fixture, the reflector inside the lighting fixture is taken out and the release screw on the upper surface of the fixture main body is loosened (Example 1),
Tighten the release screw (Example 2), pinch and press the operating piece of the locking metal fitting with the finger (Example 3), and pinch and press the operating portion of the locking metal fitting with the finger (Example 4). Since the hooking piece of the stopper is released from the locking portion of the ceiling bar, the work of removing the lighting fixture is extremely easy.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a main part of a first embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of FIG.

FIG. 3 is a perspective view showing a main part of FIG.

FIG. 4 is a perspective view showing a main part of FIG.

FIG. 5 is a vertical sectional view showing a main part of a second embodiment of the present invention.

FIG. 6 is an explanatory view of the operation of FIG.

FIG. 7 is a perspective view showing a main part of FIG.

FIG. 8 is a vertical sectional view showing a main part of a third embodiment of the present invention.

FIG. 9 is an explanatory view of the operation of FIG.

FIG. 10 is a vertical sectional view showing a main part of a fourth embodiment of the present invention.

FIG. 11 is an explanatory view of the operation of FIG.

FIG. 12 is a vertical cross-sectional view showing an example of a conventional lighting fixture.

13 is a perspective view showing a main part of FIG.

[Explanation of symbols]

 26 Ceiling Bar 27 Upper Flange 28 Web 30 Lower Flange 32 Instrument Main Body 35 Flange Part 36 Lamp 38 Reflector 41, 51 Elongated Hole 42 Mounting Bracket 43 Plane Part 45 Rise Piece 46 Horizontal Step Part 47 Locking Piece 49 Opening 50 Presser Piece 52 Locking metal fitting 53 Flat surface portion 54 Hanging piece 55 Hooking piece 56 Release screw 58 Operating piece 60 Coil spring 61, 62 Rectangular hole portion 63 Operating portion

Claims (4)

[Claims] 1. A pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of a web, and the lower flange is fixed to a ceiling, a flat portion, and both end portions of the flat portion are the same. A rising piece having a horizontal portion bent substantially at right angles to the direction and having a tip end portion in contact with the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar, and a rising piece on the flat surface portion. And an attachment provided near the opening, a holding piece provided in the vicinity of the opening, and a mounting hole made of an elongated hole provided on the central portion side of the flat portion, and a lower portion of the ceiling bar at both ends. A cross-section with a flange that abuts the flange, a long hole corresponding to the long hole of the mounting bracket is provided on the center side, the lamp, ballast, reflector, etc. are accommodated and the mounting bracket is fixed on the upper surface. Almost pot-shaped device body, elastic A pair of substantially L-shaped locks each made of a material and having a flat surface and a hanging piece formed by bending one end of the flat surface at a substantially right angle and having a hooking piece formed at a tip end thereof to be locked to the upper flange of the ceiling bar. And a flat part of the locking metal fitting is inserted into the pressing piece of the mounting metal fitting, and the hanging piece is inserted into the opening of the mounting metal fitting so as to be slidable on the mounting metal fitting. The lighting fixture is characterized in that a release screw inserted into the other end of the fixture main body and the mounting bracket is screwed into the other end. 2. A pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of the web, and the lower flange is fixed to the ceiling, the flat portion, and the both end portions of the flat portion are the same. A rising piece having a horizontal portion bent substantially at right angles to the direction and having a tip end portion in contact with the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar, and a rising piece on the flat surface portion. And an attachment provided near the opening, a holding piece provided in the vicinity of the opening, and a screw hole provided in a substantially central portion of the flat portion, and a lower portion of the ceiling bar at both ends. A cross section with a flange that abuts the flange, an opening is provided in the center side corresponding to the screw hole of the mounting bracket, and a lamp, ballast, reflector, etc. are accommodated and the mounting bracket is fixed to the upper surface. With an almost pot-shaped device body A substantially U-shaped member made of an elastic material and having a flat surface portion and a hanging piece formed by bending both end portions of the flat surface portion at substantially right angles in the same direction and having a hooking piece formed at a tip end thereof for engaging with an upper flange of the ceiling bar. And a flat portion of the locking metal fitting is inserted into the pressing piece of the mounting metal fitting, and the hanging pieces are respectively inserted into the openings of the mounting metal fitting and are arranged on the mounting metal fitting. The lighting fixture is characterized in that a release screw screwed into a screw hole of the mounting member is brought into contact with a substantially central portion thereof. 3. A pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of the web, and the lower flange is fixed to the ceiling, the flat portion, and both end portions of the flat portion are the same. A rising piece having a horizontal portion bent substantially at right angles to the direction and having a tip end portion in contact with the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar, and a rising piece on the flat surface portion. An opening provided near the opening, a pressing piece provided in the vicinity of the opening, and 2 provided on the central portion side of the flat surface portion.
Mounting brackets consisting of two elongated holes, and flanges that contact the lower flange of the ceiling bar at both ends, and an elongated hole corresponding to the elongated holes of the mounting brackets is provided on the center side, and the lamp, ballast, An instrument main body having a substantially pot-shaped cross section in which a reflection plate or the like is housed and the mounting bracket is fixed to the upper surface, a flat portion, and one end of the flat portion is bent at a substantially right angle to engage the upper flange of the ceiling bar at the tip. A pair of locking metal fittings having a hanging piece formed with a hooking piece to be stopped, and an operating piece bent in the same direction as the hanging piece at the other end. Inserting the hanging pieces into the holding pieces of the mounting brackets, inserting the hanging pieces into the openings of the mounting brackets, and inserting the operation pieces into the mounting brackets and the elongated holes of the instrument body, and sliding them onto the mounting brackets. It is movably arranged, and a spring is interposed between the operation pieces of the both locking fittings. Luminaire, characterized in that the. 4. A pair of ceiling bars having an I-shaped cross section in which an upper flange and a lower flange are provided at both ends of the web, and the lower flange is fixed to the ceiling, the flat portion, and the both end portions of the flat portion are the same. A rising piece having a horizontal portion bent substantially at right angles to the direction and having a tip end portion in contact with the upper flange of the ceiling bar and a locking piece arranged outside the upper flange of the ceiling bar, and a rising piece on the flat surface portion. And an attachment provided near the opening, a holding piece provided in the vicinity of the opening, and an elongated hole provided in the center of the flat portion, and a lower flange of the ceiling bar at both ends. Has a flange that abuts against, and has a long hole corresponding to the long hole of the mounting bracket on the center side, and accommodates a lamp, ballast, reflector, etc. Pan-shaped device body and elastic material The flat portion, and both end portions of the flat portion are bent at substantially right angles in the same direction, and a hanging piece formed with a hooking piece for engaging with the upper flange of the ceiling bar is provided at the tip end, and the substantially central portion is provided. It is composed of locking metal fittings that are given elasticity by bending operation parts, and the flat surface portions of the locking metal fittings are inserted into the pressing pieces of the mounting metal fittings, respectively, and the hanging pieces are the first parts of the mounting metal fittings. A lighting fixture, characterized in that it is inserted into each of the openings, and the operation part is inserted into a long hole of a fixture and a fixture main body and slidably disposed on the fixture.