JP2541022Y2 - Lighting equipment for ceiling burial - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling buried lighting fixture buried in a system ceiling or the like.

[0002]

2. Description of the Related Art Conventionally, there is a lighting device for burial embedded in a system ceiling or the like as shown in FIG. In this configuration, the frame 20 of the lighting fixture 10 is installed on the T-bar 30, and the space between the T-bar 30 and the reflection plate 40 is an opening 50 for smoke exhaust and exhaust.

[0003]

However, since the above-mentioned lighting device for burying in the ceiling is used as an exhaust opening by utilizing a gap between the T-bar and the reflector, the opening ratio is adjusted. I couldn't. For this reason, for example, in the case where a lighting fixture having a different opening ratio of the exhaust port depending on the location is mounted on one floor, the above-described ceiling-mounted lighting fixture cannot be used. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a ceiling buried lighting fixture capable of arbitrarily adjusting an opening ratio of an exhaust port.

[0004]

A means for solving the above problems and achieving the object is a lighting device for ceiling burial in which a frame provided with a reflecting plate is buried in an opening provided in the ceiling. Providing an inspection port on the upper surface of the frame body, the inspection port is closed by a removable adjustment plate having a large number of holes, the inspection port is at least large enough for a person to enter, The adjusting plate is slidable.

[0005]

The opening ratio of the exhaust port can be arbitrarily adjusted on one floor by replacing the detachable adjusting plate with an adjusting plate having a different opening ratio. By removing the reflection plate and then removing the adjustment plate of the inspection port on the upper surface of the frame, a person can enter through the inspection port, so that maintenance or the like can be easily performed. In addition, since the adjustment plate is slidable separately from the detachable adjustment plate, the opening ratio of the exhaust port can be arbitrarily adjusted even after the ceiling-mounted lighting fixture is attached.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of a ceiling lighting device according to the present invention; FIG. 1 is a cross-sectional view of a lighting device for burying a ceiling according to the present invention, FIG.
Is a perspective view of the same.

The lighting fixture 1 for burying in a ceiling is installed on a T-bar 9 in the system ceiling and embedded in the ceiling, and a reflector 3 is mounted inside a box-shaped frame 2 with screws 3a. Fluorescent lamp 5 in socket 4 inside reflector 3
Is attached.

An inspection port 6 is provided on the upper surface of the frame 2, and the inspection port 6 is closed by an adjustment plate 7. The adjustment plate 7 is detachably attached to the inspection port 6 from below the inspection port 6 by a screw 6 a, and a large number of holes 7 a provided on the entire surface serve as an exhaust port 8.

The inspection port 6 is large enough for a person to enter. By removing the adjusting plate 7 after removing the fluorescent lamp 5 and the reflecting plate 3, a person can enter from there and lighting equipment and other equipment can be inserted. Maintenance can be performed.

As shown in FIG. 4, when the opening area M between the frame 2 and the reflecting plate 3 is set to 100, the adjusting plate 7 has an opening ratio of 10
Make 3 kinds of 0%, 72%, 50%
Use them separately for each floor or each floor. Thus, it is possible to install the lighting fixture 1 for burying the ceiling in which the opening ratio of the exhaust port 8 is different for each floor or each floor.

Further, the opening ratio of the exhaust port 8 in the adjusting plate 7 is not limited to the above-mentioned three types of 100%, 72% and 50%. It is also possible to make.

FIGS. 5 and 6 show an adjustment plate 7 provided slidably. This is a fixed plate 10 with the same aperture ratio.
And the slide plate 11 are overlapped with each other, and the slide plate 11 is formed so as to be slidable with respect to the fixed plate 10 closing the inspection port 6.

Therefore, by sliding the slide plate 11, the opening ratio of the exhaust port 8 can be changed, and by removing the fixing plate 10, a person can enter and exit from the inspection port 6.

The aperture ratio of the adjustment plate 7 is defined as 100% when the holes 7a of the fixed plate 10 and the slide plate 11 match each other. Then, 7 is inserted into the hole 7a of the slide plate 11.
The aperture ratio can be easily adjusted by engraving the scales 12 of 2% and 50%. This 100%, 72%, 5
The aperture ratio of 0% is a ratio when the opening area M of the frame 2 and the reflector 3 shown in FIG.
The aperture ratio is not limited to three types, but can be set arbitrarily as needed.

[0015]

The aperture ratio of the exhaust port can be easily changed by replacing the removable adjustment plate with an adjustment plate having a different aperture ratio.

Since the inspection opening is at least large enough to be inserted by a person, maintenance of the lighting equipment and the like can be easily performed by removing the adjustment plate.

By making the adjustment plate slidable, the opening ratio of the exhaust port can be arbitrarily changed even after the ceiling-mounted lighting fixture is installed, and by removing the adjustment plate, a person enters or exits the inspection opening. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a ceiling-mounted lighting fixture.

FIG. 2 is a longitudinal sectional view of a ceiling-mounted lighting fixture.

FIG. 3 is a perspective view of a ceiling-mounted lighting fixture.

FIG. 4 is a low-side view of a ceiling-mounted lighting fixture.

FIG. 5 is a cross-sectional view of a ceiling-mounted lighting fixture in which an adjustment plate is slidable.

FIG. 6A is a perspective view of a slidable adjustment plate, and FIG. 6B is a plan view of the same.

FIG. 7 is a cross-sectional view of a conventional ceiling-mounted lighting fixture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lighting equipment for ceiling burial 2 Frame 3 Reflector 4 Socket 5 Fluorescent lamp 6 Inspection port 7 Adjustment plate 7a Hole 8 Exhaust port

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) The creator Kiyoshi Aoki 3-11-3 Akasaka, Minato-ku, Tokyo Toda Construction Co., Ltd. Kanto Branch (72) The creator Kokichi Matsubara 3-11-3 Akasaka, Minato-ku, Tokyo Toda Construction Co., Ltd. Kanto Branch (56) References Japanese Utility Model Sho 59-112413 (JP, U) Japanese Utility Model Sho 58-95506 (JP, U) Japanese Utility Model Utility Model 2-89709 (JP, U) Japanese Utility Model Sho 60- 77613 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A ceiling-embedded lighting fixture in which a frame provided with a reflector is embedded and installed in an opening provided in a ceiling,
A lighting device for burying in a ceiling, wherein an inspection port is provided on an upper surface of the frame, and the inspection port is closed by a removable adjustment plate having a large number of holes. 2. The lighting fixture for burying in a ceiling according to claim 1, wherein the inspection opening is at least large enough to be inserted by a person. 3. The lighting device according to claim 1, wherein the adjusting plate is slidable.