JP4448757B2 - Clean room lighting system - Google Patents

Description

  The present invention relates to a clean room lighting system.

  2. Description of the Related Art Conventionally, a general clean room lighting system has a lighting fixture embedded in an opening provided in a ceiling, and a translucent cover is airtightly attached from the indoor side so as to cover the opening and the lighting fixture. However, with this lighting system, when inspecting, repairing, or exchanging lighting fixtures, it is difficult and time-consuming because the work is performed by removing the translucent cover from the bottom and placing it on the scaffold from the indoor side. It was. In addition, when the translucent cover is removed, there is a problem that the cleanliness of the clean room is lowered because dust attached to the lighting fixture falls into the room.

  In order to solve these problems, a support frame is fixed through a sealing material so that the ceiling material is sandwiched inside an opening provided in the ceiling, a translucent panel is attached to the lower portion of the support frame, and There is a structure for mounting a lighting fixture in a clean room in which a lighting fixture is placed via a sealing material (see Patent Document 1). According to this mounting structure, it is possible to inspect, repair, replace, etc. the lighting fixture from the back of the ceiling.

JP 2000-182429 A

  However, in the mounting structure for a lighting device in a clean room described in Patent Document 1, when performing work such as inspection, repair, and replacement of the lighting device, the lighting device is placed on a support frame via a sealing material, and the ceiling Since all the gaps and holes in the lighting fixtures are filled with sealing material so that dust in the air does not enter, work must be done with these sealing materials removed, and after the work is finished, the sealing material must be filled again. did not become. For this reason, labor and time were required for these operations, and there was a problem that the operation cost increased. In addition, since the luminaire is hermetically sealed with a sealing material, there is no escape point for heat generated by the luminaire, the temperature inside the luminaire rises, and the life of the luminaire is shortened.

  The present invention has been made paying attention to such a problem, and it is easy to inspect, repair, and replace lighting fixtures, and it is possible to reduce the work cost and to improve the life of the lighting fixture. It aims to provide a lighting system.

In order to achieve the above object, a clean room lighting system according to the present invention sucks clean room air from below the clean room into a ceiling chamber above the ceiling via a return shaft, and then enters the clean room from the ceiling chamber by a fan filter unit. A clean room structure that sends clean air, with a fan ceiling unit and blank panels placed between a plurality of beams made of steel with an inverted T-shaped cross section, and a solid ceiling that allows people to work on the floor. The blank panel has an opening, a translucent plate that is provided on the ceiling chamber side above the blank panel and hermetically closes the opening, and the upper portion of the blank panel The ceiling chamber side of the door is fixed so as to surround the opening. A frame member which is, and a lighting fixture for illuminating the clean room through the transparent plate is placed on the inside of the upper and the frame member of the transparent plate, characterized in that it has.

  In the clean room lighting system according to the present invention, since the lighting fixture is provided in the ceiling chamber, operations such as inspection, repair, and replacement of the lighting fixture can be performed inside the ceiling chamber. For this reason, compared with working on a scaffold from the indoor side of a clean room, the work is easier and the work cost can be reduced. In addition, since the lighting fixtures are airtightly blocked by the clean room and the translucent plate, even if dust is attached to the lighting fixtures or the lighting fixtures are general-purpose non-dust generation products, It does not scatter to the clean room and does not affect the cleanliness of the clean room.

  In the clean room lighting system according to the present invention, the clean air purified from the ceiling chamber by the fan filter unit and sent to the clean room is again sucked into the ceiling chamber from the lower part of the clean room via the return shaft. The pressure is negative compared to the inside, and the cleanliness of the air in the ceiling chamber is somewhat high. The air in the ceiling chamber is again purified by the fan filter unit and sent to the clean room. For this reason, it is difficult for dust or the like to adhere to the luminaire or the translucent plate provided in the ceiling chamber, and it is not necessary to hermetically cover the luminaire with a sealing material or the like. Thereby, it is possible to easily perform work such as inspection, repair, and replacement of the lighting fixture without removing or filling the sealing material. Further, since dust or the like hardly adheres to the luminaire or the translucent plate, the brightness for illuminating the clean room can be maintained. The air in the ceiling chamber having a certain degree of cleanness diffuses the heat generated by the luminaire through the gap between the luminaires and suppresses the temperature rise of the luminaire, thereby extending the life of the luminaire.

Clean room lighting system according to the present invention includes: a first packing material frame-like provided between the ceiling and the transparent plate of the blank panel surrounding said opening inside of said frame member, said A frame-shaped second packing material provided on the upper side of the peripheral edge of the translucent plate, and fixed to the frame material, and the translucent plate is pressed against the ceiling side of the blank panel via the second packing material. Preferably, the lighting fixture is disposed on the pressing member.

  In this structure, the 1st packing material can block | close the clearance gap between a ceiling and a translucent board airtightly by pressing and fixing a translucent board to a ceiling side with a pressing member. This reliably prevents low-clean air and dust in the ceiling chamber from leaking into the clean room from the ceiling opening against the pressure difference between the clean room and the ceiling chamber without passing through the fan filter unit. And the cleanliness of the clean room can be maintained.

The lighting fixture may be placed on the pressing member inside the frame member and may not be fixed. In this case, the installation is easy and the material cost can be reduced as compared with the case where the lighting apparatus is fixed by a sealing material or a fixture.
The frame material may consist of a beam provided on the ceiling chamber side of the ceiling. In this case, the material cost of the frame material can be reduced.

  According to the present invention, it is possible to provide a clean room lighting system that facilitates work such as inspection, repair, and replacement of lighting fixtures, reduces work costs, and extends the life of the lighting fixtures.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a clean room lighting system according to an embodiment of the present invention.
As shown in FIGS. 1 and 2, the clean room lighting system 10 includes a frame member 11, a first packing material 12, a translucent plate 13, a second packing material 14, a pressing member 15, and a lighting fixture 16. Yes.

  As shown in FIG. 3, the clean room structure 1 is provided in a clean room 5 surrounded by a wall 2, a ceiling 3 and a floor 4, a ceiling chamber 6 provided on the upper side of the ceiling 3, and a lower side of the floor 4. And an underfloor space 4a. The ceiling 3 is formed by laying a fan filter unit 8 and a blank panel 3b between a plurality of beams 3a made of steel materials having an inverted T-shaped cross section. The ceiling 3 has a suction opening 3c, an air supply opening 3d, and an illumination opening 3e formed by making a hole in the blank panel 3b. The illumination opening 3e is formed in a rectangular shape that matches the shape and size of the lighting fixture 16 to be used. The floor 4 has a plurality of ventilation holes 4 b that can vent from the clean room 5 to the underfloor space 4 a and a floor opening 4 c formed immediately below the suction opening 3 c of the ceiling 3.

  The clean room structure 1 has a return shaft 7 extending from the floor 4 to the ceiling 3 and connected to the floor opening 4c and the suction opening 3c in the clean room 5. A fan filter unit 8 made of a HEPA filter is attached to the air supply opening 3d inside the ceiling chamber 6. The clean room structure 1 sucks the air in the clean room 5 from the vent hole 4b of the floor 4 into the ceiling chamber 6 through the underfloor space 4a, the floor opening 4c, the inside of the return shaft 7, and the suction opening 3c. Thus, the air is purified and temperature-controlled, and clean air is sent from the ceiling chamber 6 to the clean room 5 through the air supply opening 3d.

  As shown in FIGS. 1 and 2, the frame member 11 is made of four elongated steel members having L-shaped cross sections and is provided in the ceiling chamber 6. The frame member 11 is provided in a rectangular frame shape so as to surround the illumination opening 3e with a predetermined interval from the periphery of the illumination opening 3e. The other surface 11b of the frame member 11 is fixed to the blank panel 3b so that one surface 11a across the corner rises vertically from the blank panel 3b. The frame member 11 is arranged such that the other surface 11b faces the outside. The frame member 11 has two frame fixing holes 11c each on one surface 11a of two steel members corresponding to the long side of the rectangle.

  The first packing material 12 is made of white EPT (ethylene propylene) and has a rectangular frame shape. The outer periphery of the first packing material 12 is slightly smaller than the inner periphery of the frame member 11, and the inner periphery is formed to be approximately the same size as the peripheral edge of the illumination opening 3 e. The first packing material 12 is provided on the blank panel 3 b so as to surround the illumination opening 3 e inside the frame material 11.

  The translucent plate 13 is made of rectangular plate-shaped tempered glass. The translucent plate 13 is formed to have substantially the same size as the inner periphery of the frame member 11. The translucent plate 13 is provided on the first packing material 12 inside the frame material 11 so as to hermetically close the illumination opening 3e.

  The second packing material 14 is made of white EPT (ethylene propylene) and has a rectangular frame shape. The second packing material 14 is formed in the same size as the first packing material 12. The second packing material 14 is provided on the inner side of the frame material 11 and on the upper side of the peripheral edge portion of the translucent plate 13.

  The pressing member 15 is made of a steel material having a rectangular frame shape, and integrally includes a pressing plate portion 15a and a fixed frame portion 15b. The pressing plate portion 15a has a rectangular frame shape, and the outer periphery has substantially the same size as the inner periphery of the frame member 11, and the inner periphery has approximately the same size as the peripheral edge of the illumination opening 3e. The fixed frame portion 15b rises vertically from the outer periphery of the pressing plate portion 15a. The fixed frame portion 15b has four pressing fixing holes 15c corresponding to the frame fixing holes 11c. The pressing member 15 is provided on the second packing material 14 inside the frame material 11 with the fixed frame portion 15 b facing up and the pressing plate portion 15 a in contact with the second packing material 14. In the state where the translucent plate 13 is pressed against the ceiling 3 side via the second packing material 14, the holding member 15 aligns the holding hole 15c for holding with the fixing hole 11c for the frame, and passes the screw 17 through each hole. The frame member 11 is fixed.

  The luminaire 16 is a commercially available product with a fluorescent lamp 16a attached thereto. The luminaire 16 is placed on the pressing plate portion 15 a inside the fixed frame portion 15 b so as to illuminate the clean room 5 through the translucent plate 13.

Next, the operation will be described.
In the clean room lighting system 10, the ceiling 3 is firmly formed of an inverted T-shaped steel beam 3 a, and the lighting fixture 16 is provided in the ceiling chamber 6 on which a person can work. Work such as inspection, repair, and replacement can be performed inside the ceiling chamber 6. For this reason, compared with working on the scaffold from the indoor side of the clean room 5, the work is easier and the work cost can be reduced.

  By pressing the translucent plate 13 against the ceiling 3 side with the pressing member 15 and fixing it, the first packing material 12 can airtightly close the gap between the ceiling 3 and the translucent plate 13. As a result, low-clean air or dust in the ceiling chamber 6 does not pass through the fan filter unit 8 and resists the pressure difference between the clean room 5 and the ceiling chamber 6 from the illumination opening 3 e of the ceiling 3 to the clean room 5. And the cleanliness of the clean room 5 can be maintained. Moreover, since the lighting fixture 16 is airtightly shielded from the clean room 5 by the frame member 11, the first packing material 12, the translucent plate 13, the second packing material 14, and the pressing member 15, Even if dust adheres or the lighting fixture 16 is a general-purpose product that does not generate dust, the dust does not scatter to the clean room 5 and does not affect the cleanliness of the clean room 5.

  In the clean room lighting system 10, the clean air sent from the ceiling chamber 6 to the clean room 5 by the fan filter unit 8 is again sucked into the ceiling chamber 6 from below the clean room 5 through the return shaft 7. However, the pressure in the ceiling chamber 6 is somewhat higher than that in the clean room 7. For this reason, dust etc. are hard to adhere to the lighting fixture 16 and the translucent plate 13 provided in the ceiling chamber 6, and it is not necessary to cover the lighting fixture 16 airtightly with a sealing material. Moreover, even if there is a slight gap in the lighting fixture 16 and the light transmitting plate 13 provided in the ceiling chamber 6, clean air is sucked into the ceiling chamber 6 from the clean room 5 side, and the inside of the ceiling chamber 6 is clean. Therefore, it is not necessary to airtightly cover the lighting fixture 16 with a sealing material or the like. This makes it possible to easily perform operations such as inspection, repair, and replacement of the lighting fixture 16 without removing or filling the sealing material or the like. Moreover, since dust etc. are hard to adhere to the lighting fixture 16 and the translucent board 13, the brightness which illuminates the clean room 5 can be maintained. The air in the ceiling chamber 6 having a certain degree of cleanness passes through the gap between the lighting fixtures 16 to diffuse the heat generated by the lighting fixtures 16 and suppress the temperature rise of the lighting fixtures 16, thereby extending the life of the lighting fixtures 16. it can.

Since the luminaire 16 is not fixed and is merely placed on the presser member 15 inside the frame member 11, it is easier to install than the case where the luminaire 16 is fixed with a sealing material, a fixture, etc. Costs can be reduced.
Moreover, in order to fix the frame material 11 etc. which consist of steel materials around the opening part 3e for illumination of the blank panel 3b, the blank panel 3b is reinforced and work, such as inspection, repair, and replacement | exchange of the lighting fixture 16, should be performed safely. Can do.

It is sectional drawing which shows the use condition of the lighting system of the clean room of embodiment of this invention. It is a disassembled perspective view of the illumination system of the clean room shown in FIG. It is a side view of the clean room structure which shows the installation condition of the lighting system of the clean room shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Clean room structure 2 Wall 3 Ceiling 3a Beam 3b Blank panel 3c Suction opening 3d Air supply opening 3e Lighting opening 4 Floor 4a Underfloor space 4b Vent hole 4c Floor opening 5 Clean room 6 Ceiling chamber 7 Return shaft 8 Fan Filter unit 10 Illumination system 11 Frame material 12 First packing material 13 Translucent plate 14 Second packing material 15 Holding member 16 Lighting fixture

Claims (2)

Suction in the upper ceiling chamber ceiling air of the clean room via a Litan shaft from the clean room beneath, in a clean room structure for sending clean air into the clean room by the fan filter unit from the ceiling chamber cross section is made of inverted T-shaped steel A lighting system used in a clean room structure in which a fan ceiling unit and a blank panel are laid between a plurality of beams, and a solid ceiling is formed on which a person can work .
The blank panel has an opening,
A light-transmitting plate that is provided on the ceiling chamber side above the blank panel and hermetically closes the opening;
A frame member fixed to surround the opening on the ceiling chamber side above the blank panel;
A lighting fixture that is placed on the upper side of the translucent plate and inside the frame member and illuminates the clean room through the translucent plate;
A clean room lighting system comprising: A first packing material frame-like provided between the ceiling and the transparent plate of the blank panel surrounding said opening inside of said frame member,
A frame-shaped second packing material provided on the upper side of the peripheral edge of the translucent plate;
A frame-shaped pressing member fixed to the frame member and pressing the light-transmitting plate against the ceiling side of the blank panel via the second packing material;
The lighting fixture is disposed on the pressing member,
The clean room lighting system according to claim 1, wherein:

Images