JPH1131411A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire that allows a light distribution controller to be installed in an existing luminaire easily. SOLUTION: This luminaire comprises a luminaire body 1 that is installed between a pair of T bars 4 placed in parallel with each other and has an opening 5 at its bottom, a light distribution controller mounting frame 2 that has locking parts 21 to lock with an locking catches 20 formed on the luminaire body 1 and is located below the opening 5, and a ring-shaped shielding elastic member 3 that is pressed by and interposed among the light distribution controller mounting frame 2, horizontal lower ends 13 of the T bars 4 facing the upper surface of the light distribution controller mounting frame 2 and the edges of the area, located in between the T bars 4, of the opening of the luminaire body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture mounted on a system ceiling.

[0002]

2. Description of the Related Art In the case where a louver or a translucent panel is provided on the front of a lighting device installed on a conventional system ceiling, it is necessary to mount a lighting device provided with these on the front surface between T-bars in advance. When the louver is later installed, the height of the lighting fixture changes, so that it is necessary to attach the louver to a fixture having a space in which the louver or the like can be attached, which is a limitation.

[0003]

However, with the change of indoor office automation and interior decoration and design, it has been necessary to change the existing ceiling lighting fixtures to those having louvers or the like. For this reason, it was expected that a light distribution control tool would be attached to existing lighting equipment without rebuilding.

[0004] Accordingly, it is an object of the present invention to provide a lighting fixture in which a light distribution controller can be easily attached to an existing lighting fixture.

[0005]

According to a first aspect of the present invention, there is provided a lighting fixture mounted between a pair of substantially parallel T-bars and having an opening at a lower surface thereof, and a lighting unit formed in the lighting fixture. A light distribution control device mounting frame having a locking portion for locking to a horizontal portion at the lower end of the stop portion or the T-bar, the light distribution control device mounting frame positioned below the opening, the light distribution control device mounting frame, and the light distribution control device mounting A ring-shaped light-shielding elastic member that is compressed and interposed between the lower end horizontal portion of the T-bar facing the upper surface of the frame and an edge between the T-bars in the opening of the instrument body.

According to the first aspect of the present invention, since the light distribution control device mounting frame is mounted on the device main body, the light distribution control device is mounted on the light distribution control device mounting frame, or the light distribution control device is integrated with the light distribution control device in advance. By attaching the light distribution control device mounting frame described above, the light distribution control device can be easily attached to the existing device main body. Moreover, since the light-shielding elastic member is compressed and interposed between the light distribution control device mounting frame and the horizontal portion at the lower end of the T-bar and between the T-bars at the opening edge of the instrument body, the play of the light distribution control device mounting frame is reduced. It is possible to prevent sticking and prevent light leakage on the mounting side of the light distribution control tool mounting frame.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture has the fixture main body 1, the light distribution control fixture mounting frame 2, and the light shielding elastic member 3. The device main body 1 is attached between a pair of T-bars 4 provided substantially in parallel, and has an opening 5 on the lower surface. In the instrument main body 1 of the embodiment, a substantially rectangular attachment 6 is placed in the width direction of the upper surface of the instrument main body 1 and attached to the instrument main body 1 with screws 7 and nuts 8. Locked to the upper end of the T-bar 4, the lifting prevention claws 10 provided at both ends locking portions 9 are locked to the neck 4 a of the T-bar 4, and the instrument body 1 is prevented from lifting. In this mounting state, both sides of the opening edge of the instrument body 1 are located on the lower horizontal portion 13 of the T-bar 4. In addition, the tool body 1 is preliminarily machined on the side wall of the side wall at the end portion in the longitudinal direction (longitudinal direction of the T-bar 4) so that the locking receiving portion 20 formed by a square hole can be punched out by knockout. Reference numeral 11 denotes a lamp mounted on a lamp socket provided in the fixture body 1, reference numeral 12 denotes a ceiling material locked on the lower horizontal portion 13 of the T-bar 4, and reference numeral 33 denotes a reflector.

The light distribution controller mounting frame 2 has a locking portion 14 for locking to a locking receiving portion 20 formed on the instrument body 1 and is located below the opening of the instrument body 1. The light distribution control device mounting frame 2 of the embodiment is similar to the rectangular shape of the opening of the device main body 1, but the cross sections of both sides are a horizontal portion 15, a vertical portion 16, an inclined portion 17, an inward folded portion 18, and The inner horizontal portion 19 is formed continuously, and the cross section of both ends is the upper horizontal portion 2.
Although it is formed in a substantially U-shape having the lower end 7 and the lower end horizontal portion 28, the inward turning portion 18 is provided in common. A light distribution control device mounting portion 25 is formed by a hole in the inward turning portion 18 at the lower end, and the light distribution control device 26 is connected to the light distribution control device mounting portion 2.
5 is detachably attached. The light distribution controller 26 has a louver as an embodiment as shown in FIG.

The locking portion 14 uses a U-shaped metal fitting in the embodiment. The upper piece 21 is hooked on the locking receiving portion 20, and the lower piece 22 is inserted through a screw 23 to form a light distribution control tool. It is screwed into a screw hole formed in the upper horizontal portion 27 of the mounting frame 2 for mounting. The ring-shaped light-shielding elastic member 3 is provided at the lower end horizontal portion 13 of the T-bar 4 opposed to the upper surface of the horizontal portion 15 and the upper end horizontal portion 27 of the light distribution control device mounting frame 2 and the light distribution control device mounting frame 2.
It is compressed and interposed between the opening 5 of the instrument body 1 and the edge between the T-bars 4. The light-shielding elastic member 3 of the embodiment uses packing, and is attached to the upper surface of the light distribution controller mounting frame 2. By mounting the light distribution control mounting frame 2 by tightening the screw 23, the light shielding elastic material 3 is sandwiched between the light distribution control mounting frame 2 and the opening edge of the instrument body 1 and the T-bar 4, and compressed. Lower end horizontal portion 13 of T-bar 4, instrument body 1
Between the upper edge of the light distribution controller mounting frame 2 and the opening edge of
The instrument body 1 is firmly fixed.

According to this embodiment, since the light distribution control device mounting frame 2 is mounted on the fixture body 1, the light distribution control device mounting frame 2 is mounted.
The light distribution control device 26 can be easily attached to the existing device main body 1 by attaching the light distribution control device 26 to the existing device main body 1 or by attaching the light distribution control device mounting frame 2 in which the light distribution control device 26 is integrated in advance. . Moreover, since the light-shielding elastic member 3 is interposed between the light distribution control tool mounting frame 2 and the lower horizontal portion 13 of the T-bar 4 and the portion between the T-bars 4 at the opening edge of the instrument body 1, the light distribution control is performed. The rattling of the fixture mounting frame 2 can be prevented, and light leakage on the mounting side of the light distribution control fixture mounting frame 2 can be prevented.

FIG. 3 shows a second embodiment of the present invention. That is, the difference from the first embodiment is that the locking portion 14 uses a substantially Z-shaped fitting and the upper piece 30 is the T-bar 4.
The lower piece 31 is attached to the upper horizontal part 27 of the light distribution controller mounting frame 2 with the screw 23.
According to this embodiment, it is possible to easily attach to an existing lighting device that does not have the locking portion 14 in the device main body 1. Others are the same as in the first embodiment.

The light distribution controller 26 may be provided integrally with the light distribution controller mounting frame 2. The light distribution controller 26 may be a light-transmitting panel or the like. Further, the locking portion 14 is not limited to the above embodiment.

[0013]

According to the first aspect of the present invention, since the light distribution control device mounting frame is mounted on the device main body, the light distribution control device can be mounted on the light distribution control device mounting frame or the light distribution control device can be mounted in advance. By installing the integrated light distribution control mounting frame,
The light distribution control device can be easily attached to the existing device body. Moreover, since the light-shielding elastic member is compressed and interposed between the light distribution control device mounting frame and the horizontal portion at the lower end of the T-bar and between the T-bars at the opening edge of the instrument body, the play of the light distribution control device mounting frame is reduced. It is possible to prevent sticking and prevent light leakage on the mounting side of the light distribution control tool mounting frame.

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view of the state of use.

FIG. 3 is a cross-sectional view of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Light distribution control tool mounting frame 3 Light-shielding elastic material 4 T bar 5 Opening 13 Lower horizontal part 14 Locking part 20 Locking receiving part

Claims (1)

[Claims] 1. An instrument body attached between a pair of T-bars provided substantially parallel and having an opening on a lower surface, and a catch receiving portion formed on the instrument body or a lower end horizontal portion of the T-bar. A light distribution controller mounting frame located below the opening having a locking portion that engages with the light distribution controller mounting frame, and the lower end horizontal of the T-bar opposed to the upper surface of the light distribution controller mounting frame. A lighting fixture comprising: a ring-shaped light-blocking elastic member that is compressed and interposed between the portion and an edge between the T-bars of the opening of the fixture body.