JP2000182429A - Structure for mounting luminaire in clean room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for mounting a luminaire for a clean room, the structure allowing easy maintenance of the luminaire (replacement of illuminating lamps and the luminaire as a whole, cleaning and repair inside a luminaire body, etc.), preventing uncleaned air from entering into the room. SOLUTION: A ceiling material 1 is made of a thick panel, having such a strength that persons can perform operations standing thereon. Locking bolts 13 are fastened into the internal threads of projecting parts 3b to fix supporting frames 3 via sealants S1 inside an opening 1a formed in the ceiling material 1. A translucent cover 7 is placed on the lower horizontal pieces 3a of the support frames 3 via sealants S2. The flange parts 5d of a main body box 5A are placed on the box support pieces 3c of the supporting frames 3, whereby a luminaire 5 is placed via sealants S3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a lighting fixture installed on a ceiling of a clean room such as a semiconductor factory, a precision machine factory, and a chemical manufacturing factory.

[0002]

2. Description of the Related Art A conventional lighting device in a clean room is mounted so that a main body box of the lighting device is embedded in an opening provided in a ceiling material of the clean room. The main body box is suspended and supported by inserting a hole formed therein into a suspension bolt having an upper end fixed to the upper floor slab and tightening a nut to the suspension bolt. The body box also has a hole through which a power cable is inserted. These holes are filled with a sealing material after passing the hanging bolts and the power cable, thereby preventing dust from entering the lighting fixture and attaching to the lamp or the light transmitting cover.

[0003] A plate-shaped translucent cover is attached to the lower side of the main body box. The translucent cover is in contact with the lower end of the side wall of the main body box and the ceiling surface, and closes the gap between the opening of the ceiling material and the side wall of the main body box. Class 10
In a clean room requiring a particularly high cleanliness of 0 or more, the gap is also filled with a sealing material.

[0004]

However, such a conventional mounting structure of a lighting apparatus in a clean room has the following problems.

(1) Maintenance of the lighting equipment (replacement of the lighting lamp, replacement of the entire lighting equipment, cleaning and repair of the inside of the lighting equipment main body, etc.) is complicated.

For example, a lamp needs to be replaced at the end of its life or at regular intervals. The replacement is performed on a scaffold assembled on the floor below the lighting fixture, and the light-transmitting cover is kept facing upward. , Remove the lighting lamp, then install a new lighting lamp, then attach the translucent cover, and finally, remove the scaffolding. The work is not easy because it sometimes happens.

In particular, when replacing the entire lighting fixture, it is necessary not only to remove or attach the lighting fixture while holding down the lighting fixture body from below, but also to disconnect and connect electrical connections such as a power cable. In addition to the above, it is necessary to remove the sealing material filled in the gaps between the holes and to fill the sealing material, so that the operation is even more complicated. Furthermore, when high cleanliness is required, it is necessary to fill the gap between the lower part of the side wall of the main body box and the ceiling material with a sealing material.

(2) Since the replacement work of the lighting lamps or the entire lighting equipment is performed from the clean room side, it takes time after the replacement work is completed to restore the entire clean room to the original cleanliness. For this reason, the replacement operation itself takes time, and it takes a long time to recover the cleanliness thereafter, during which time the use of the clean room is restricted.

(3) In a clean room, it is necessary to surely prevent unpurified air that has not been cleaned from entering the room. There is a risk that uncleaned air may enter the air.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object the maintenance of lighting fixtures (replacement of lighting lamps, replacement of entire lighting fixtures, cleaning and repair of the interior of the lighting fixture main body). The present invention provides a mounting structure for a lighting device for a clean room, which is simple and does not allow unclean air to enter the room.

[0011]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a ceiling member, and a supporting member which is arranged inside an opening formed in the ceiling member and on which a lighting fixture is placed. A frame, a fastening member for fixing the support frame to the opening of the ceiling material by sandwiching the ceiling material by fastening fasteners between the support frame, and between the ceiling material and the support frame, It is characterized by comprising a sealing material interposed between the support frame and the lighting equipment.

Further, the invention according to claim 2 is characterized in that a translucent panel is attached to a lower portion of the support frame so as to be substantially flush with a lower surface of the ceiling material.

[0013] Further, the invention according to claim 3 is characterized in that the ceiling material has such a strength that a person can work on it.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B show an embodiment of a lighting fixture mounting structure for a clean room according to the present invention.

The mounting structure of the lighting apparatus mainly includes a supporting frame 3 fixed to the ceiling material 1, a lighting apparatus 5 mounted thereon, and a light-transmitting cover 7 fixed to the supporting frame 3. It is configured.

In this embodiment, the ceiling material 1 is made of a thick panel material, and has strength enough to allow a person to work on it, more preferably to allow a plurality of people to work. are doing. At a predetermined position of the ceiling material 1, an opening 1a for mounting a lighting fixture is formed.

A frame-shaped support frame 3 is attached to the inside edge of the opening 1a formed in the ceiling material 1 in plan view. The support frame 3 has a lower horizontal piece 3a whose outer side is in contact with the lower surface of the ceiling material 1, and a frame-shaped protrusion that protrudes upward from an intermediate portion of the lower horizontal piece 3a and has an inner screw grooved. The part 3b and the box supporting piece 3c for mounting the lighting equipment 5 are integrally formed.

At the top end of the protruding portion 3b, a support member 11 (a frame shape like the support frame 3, a strip shape long in the left-right direction in FIG. A through-hole (not shown) formed at one end of the support member 1 may be in the form of a plate that is long in a direction perpendicular to the paper surface.
The fixing bolt 13 is fastened to the inner screw of the protruding portion 3b in a state where the other end of the support member 1 is in contact with the upper surface of the ceiling material 1 so that the ceiling is provided between the outside of the lower horizontal piece 3a of the support frame 3 and the support material 11. By holding the material 1, the support frame 3 is fixed inside the opening 1 a formed in the ceiling material 1. A sealing material S1 is provided on a portion of the lower horizontal piece 3 that contacts the ceiling material 1.

On the inside of the lower horizontal piece 3a of the support frame 3, an edge of a light-transmitting cover 7 made of double strength glass or the like is placed. A sealing material S2 is provided on a portion of the lower horizontal piece 3a which comes into contact with the light-transmitting cover 7, and an edge of the light-transmitting cover 7 is moved by a pressing member 14 provided thereon.
By pressing to the a side, the translucent cover 7 covers the entire opening of the support frame 3 so as to be substantially flush with the ceiling material 1.

The luminaire 5 includes a substrate portion 5a having a substantially rectangular shape in a plan view, a side plate portion 5b inclined so as to expand downward from both sides of the substrate portion 5a, the substrate portion 5a and the side plate portion 5.
b, a body box 5A comprising a side plate 5c covering both ends in the longitudinal direction, a side plate 5b, and a flange 5d extending outward from the lower end of the end plate 5c in the horizontal direction, and integrated with the upper part of the substrate 5a. Lighting unit box 5B. It should be noted that a white paint is provided on the inner surfaces of the substrate portion, the side plate portion, and the like.

Inside the main body box 5A, a socket 15 is provided on the inner surface of the end plate portion 5c, and an illumination lamp 19 such as a fluorescent lamp is attached to the socket 15. A lighting unit 21 such as a ballast is housed inside the lighting unit box 5B. Lighting unit box 5B
As shown in FIG. 1A, a power cable hole 23 is formed in one side surface of the power supply cable, and a power cable 25 is connected through the hole 23 at the back of the ceiling. A handle 27 is attached to the upper surface of the lighting unit box 5B, and the handle 2 is used when the lighting lamp 19 is replaced or the entire lighting fixture 5 is replaced.
7, the lighting fixture 5 body can be lifted.

The luminaire 5 is mounted by mounting the flange 5d of the main body box 5A on the box support piece 3c of the support frame 3. Flange portion 5d of main body box 5A and box support piece 3 of support frame 3
c or both, a sealing material S3 is provided,
When the luminaire 5 is placed on the support frame 3, the sealing material S3 is pressed against by its own weight, so that the airtight seal is provided between the two (the both may be fixed more tightly by the fastener). .

Since the height of the board portion 5a of the luminaire 5 is not so different from that of the upper surface of the ceiling member 1, there is a risk that an operator may accidentally get on the board. Therefore, it is preferable to use a steel plate having a strength that does not break even when a person rides on it, for example, a strength of 0.6 t or more.

The board portion 5a of the main body box 5A and the lighting unit box 5B are fixed with screws 29.
The screwing portion is filled with a sealing material in advance. Further, the gap between the power cable hole portions 23 of the lighting unit box 5B is also filled with a sealing material. These are for preventing dust in the back of the ceiling from entering the lighting fixture 5 and attaching to the light transmitting cover 7 and the like. This is because dust adhering to the translucent cover 7 or the like not only causes a reduction in the illuminance but also is not preferable from an aesthetic point of view.

Further, the lighting unit box 5B is arranged so as to be shifted to the left or right from a virtual center line parallel to the longitudinal direction of the main body box 5A (left side in FIG. 1). If the lighting fixture 5 is arranged to be shifted left or right from the virtual center line in this way, when the lighting fixture 5 is to be vertically stacked on a pallet and packed at the time of shipment, a pair of the lighting fixtures 5 is back-to-back. In this manner, the lighting unit boxes that are vertically stacked are adjacent to each other, so that the lighting unit boxes can be stacked compactly.

In the mounting operation of the lighting equipment 5 in this embodiment, first, the support frame 3 is fixed to the opening 1a of the ceiling member 1 using the support member 11 and the fixing bolts 13. Next, the edge of the light-transmitting cover 7 is placed on the horizontal support piece 3 a of the support frame 3, and the light-transmitting cover 7 is fixed by the pressing member 14. And the box support piece 3 of the support frame 3
The flange portion 5d of the lighting fixture 5 is placed on c. Finally, the power cable 25 is connected through the hole 23 of the lighting unit box 5B, and the gap between the hole 23 is filled with a sealing material.

In the present embodiment, the cleaning, repairing, or replacing work of the lighting lamp 19 or the lighting fixture 5 is performed by grasping the handle 27 and lifting the lighting fixture 5 upward to perform cleaning,
After repairing or removing it, a new luminaire may be placed so that its flange portion rests on the box supporting piece 3c of the supporting frame 3. At the time of work, it is not necessary to remove the translucent cover 7, so that the operation is simple.

The above operation is carried out by the worker riding on the ceiling material 1 and behind the ceiling. For this reason, since the work is directed downward at a certain place under the foot, the work is easy and quick. In addition, when the lighting equipment 5 is replaced, dust in the ceiling does not contaminate the interior of the clean room.

The support frame 3 and the lighting equipment 5 are
It is also possible to manufacture the illumination lamp 19 in a standardized size according to the number of the illumination lamps 19 to be mounted. If you do this,
Efficient mass production can be measured, and construction is simpler.

[0030]

As described above, according to the mounting structure of the lighting fixture in the clean room of the present invention, the following effects can be obtained. That is, since the lighting lamp or the entire lighting fixture can be cleaned, repaired, or replaced on the ceiling material from above the ceiling, the work is easy and quick. At that time, the inside of the clean room is not contaminated.

[Brief description of the drawings]

FIG. 1A is a cross-sectional view of a lighting fixture mounting structure according to the present invention. (B) is an enlarged view of a main part of (a).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ceiling material (1a opening part) 3 Support frame (3a lower horizontal piece, 3b projecting part, 3c box support piece) 5 Lighting equipment (5a board part, 5b side plate part, 5c end plate part,
5A flange part) 5A body box 5B lighting unit box 7 light-transmitting cover 11 support material 13 fixing bolt 14 holding member 15 socket 19 lighting lamp 21 lighting unit 23 power cable hole 25 power cable 27 handle 29 screw S1, S2 S3 Sealing material

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Mitsutaka Igarashi 9-12 Shimokawabata-cho, Hakata-ku, Fukuoka-shi

Claims (3)

[Claims] 1. A ceiling material, a support frame disposed inside an opening formed in the ceiling material and on which a lighting fixture is mounted, and a fastener fastened between the support frame and the ceiling material, the ceiling material being fixed to the ceiling material. A fastening member for fixing the support frame to the opening of the ceiling material by being sandwiched, and a sealing material interposed between the ceiling material and the support frame, between the support frame and the lighting fixture. A mounting structure for lighting equipment in a clean room. 2. The structure for mounting a lighting fixture in a clean room according to claim 1, wherein a light-transmitting panel is attached to a lower portion of the support frame so as to be substantially flush with a lower surface of the ceiling material. . 3. The mounting structure for a lighting device in a clean room according to claim 1, wherein the ceiling material has a strength enough for a person to work on the ceiling material.