JP3562602B2 - Clean room ceiling structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a clean room ceiling structure.
[0002]
[Prior art]
As a conventional ceiling structure of this type of clean room, the structure shown in FIG. 6 is known. This ceiling structure includes a suspension bolt b attached to an upper floor slab a, and a ceiling receiving member c is connected to a lower end of the suspension bolt b. On the ceiling receiving member c, an edge portion of an air filter unit d for purifying air serving also as a ceiling panel is mounted on an upper portion, and a lighting device e such as a fluorescent lamp is protrudingly mounted on a lower portion.
[0003]
[Problems to be solved by the invention]
However, in such a conventional clean room ceiling structure, the lighting fixture e protrudes from the lower portion of the ceiling receiving member c, so that the effective floor height is low. It is necessary to design the slab a by increasing the height of the slab a by the protruding dimension of the lighting equipment e, which hinders a reduction in construction cost. Further, designing the upper floor slab a high requires the need to circulate, air-condition, and clean excess air, which also leads to an increase in running costs.
[0004]
The present invention has been made in order to solve such inconvenience, and an object of the present invention is to provide a ceiling structure of a clean room capable of reducing the construction cost and the running cost by increasing the effective floor height.
[0005]
[Means for Solving the Problems]
In order to achieve this object, a ceiling structure of a clean room according to claim 1 includes a hanging bolt attached to an upper floor slab, a ceiling receiving member provided at a lower end of the hanging bolt, and an edge connected to the ceiling receiving member. in the ceiling structure of the clean room provided with an air filter unit part is mounted, a housing recess for accommodating the luminaire on the ceiling receiving member provided, see write set the luminaire to the housing recess, said ceiling receiving member Forming an air introduction hole for introducing air into the lighting equipment, the lighting equipment includes a reflection shade, and the reflection shade is formed with an air passage hole through which the air flowing from the air introduction hole can pass. And
[0007]
3. The ceiling structure of a clean room according to claim 2, wherein the suspension bolt attached to the upper floor slab, a ceiling receiving member provided at a lower end of the suspension bolt, and an air filter having an edge mounted on the ceiling receiving member. in the ceiling structure of the clean room provided with the unit, the housing recess provided in the ceiling receiving member incorporates a fluorescent tube to the housing recess, in the fluorescent tube to the ceiling receiving member having a receiving recess fluorescent tube is incorporated An air introduction hole for introducing air is formed, the fluorescent tube is provided with a reflector, and the reflector is formed with an air passage hole through which air flowing from the air introduction hole can pass, and the fluorescent tube is incorporated. The ballast of the fluorescent tube is sealed in the storage recess, and the lower opening of the aluminum ceiling receiving member in which the ballast is sealed is closed with a closing plate made of an aluminum plate. That.
[0008]
[Action]
According to the first and second aspects of the present invention, a storage recess for storing a lighting fixture such as a fluorescent tube is provided in the ceiling receiving member, and the lighting fixture is incorporated in the storage recess, thereby increasing the effective floor height as compared with the related art. Enable .
[0009]
According to the first and second aspects of the present invention, the air is introduced into the lighting fixture (the fluorescent tube in the second aspect) from the air introduction hole of the ceiling receiving member to form an air flow around the lighting fixture, so that the lighting fixture has dust. In addition, it is possible to prevent the adhesion of the air flow and the like, and to make the air flow uniform through the opening of the storage recess into the room under the ceiling.
[0010]
According to the first and second aspects of the present invention, in a lighting fixture provided with a reflection shade (a fluorescent tube in the second aspect) , an air passage hole is formed in the reflection shade and air introduced from the air introduction hole is introduced into the lighting fixture. By doing so, an airflow is formed around the lighting fixture to prevent dust and the like from adhering, and the airflow is allowed to flow from the opening of the storage recess into the room, thereby making the airflow distribution uniform under the ceiling. Make it possible to plan.
According to the second aspect of the present invention, an aluminum ceiling receiving member is further used, and a ballast is sealed in a storage recess of the aluminum ceiling receiving member. By closing the lower opening with a closing plate made of an aluminum plate, it is possible to eliminate the noise by electromagnetically shielding the electromagnetic noise generated from the ballast in the case of the type that generates electromagnetic waves such as the inverter ballast method. I do.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory schematic diagram for explaining a ceiling structure of a clean room which is an example of an embodiment of the present invention, FIG. 2 is a ceiling look-up diagram viewed from the direction of arrow {circle around (2)} in FIG. 1, and FIG. FIG. 4 is a sectional view taken along line (3)-(3) of FIG. 2, and FIG. 4 is a sectional view taken along line (4)-(4) of FIG.
[0012]
The structure will be described with reference to FIGS. 1 to 4. The ceiling structure 1 includes a plurality of suspension bolts 3 suspended from the upper floor slab 2 at predetermined intervals. A ceiling receiving member 4 is connected to a lower end of the suspension bolt 3. The ceiling receiving member 4 is integrally formed in a substantially rectangular box shape having an open lower surface by, for example, extrusion molding of aluminum or the like. As a result, a storage recess 5 is formed in the ceiling receiving member 4. As shown in FIG. 2, the ceiling receiving members 4 are arranged in directions orthogonal to each other and assembled in a cross-girder shape.
[0013]
Among the ceiling receiving members 4 assembled in a cross-girder shape, a slim-type high-performance fluorescent tube (a high-frequency dedicated lamp) 6 is housed in the storage recess 5 of the ceiling receiving member 4a extending in the vertical direction (long side direction) in FIG. A plurality is incorporated one by one along the longitudinal direction. As shown in FIG. 3, the fluorescent tube 6 includes a reflection shade 7 that extends downward, and the lower end of the reflection shade 7 reaches the lower ends of the side plates 4 d and 4 e of the ceiling receiving member 4. By using the slim type fluorescent tube 6 to make the illuminating portion as small as possible, the visual sense of unity of the ceiling is increased, and by using a high frequency lamp as the fluorescent tube 6, high brightness is achieved. .
[0014]
In the storage recess 5 between the center of the upper plate 4c of the ceiling receiving member 4a and the fluorescent tube 6, a wiring space 8 for compactly organizing the wiring is provided. The wiring space 8 is closed by a fluorescent tube mounting plate 9 made of an aluminum plate, whereby the wiring is sealed in the storage recess 5. Further, on both side edges of the upper plate 4c of the upper plate 4c of the ceiling receiving member 4a, both side edges 10a and 10b of the air filter unit 10 for air cleaning which also serve as a ceiling panel are placed via airtight packing 11.
[0015]
An air introduction hole 12 for introducing clean air that has passed through the air filter unit 10 into the storage recess 5 is formed in a mounting portion of the air filter unit 10 on the upper plate 4c, and an air introduction hole 12 is introduced to the reflection shade 7 from the air introduction hole 12. An air passage hole 13 for introducing the purified air into the vicinity of the fluorescent tube 6 is formed, thereby forming an air flow around the fluorescent tube 6 to prevent dust and the like from adhering to the fluorescent tube 6. At the same time, the air flow is caused to flow from the lower opening of the ceiling receiving member 4a into the room, thereby achieving a uniform air flow distribution below the ceiling.
[0016]
As shown in FIG. 4, an inverter ballast 14 is incorporated in the recessed portion 5 of the ceiling receiving member 4b extending in the left-right direction (short side direction) in FIG. Have been. The lower opening of the ceiling receiving member 4b is closed by a closing plate 15 made of an aluminum plate, whereby the ballast 14 is sealed in the storage recess. Further, a wiring space 8 is provided in the storage recess 5 between the central portion of the upper plate 4c of the ceiling receiving member 4b and the ballast 14 to compactly arrange the wiring. The wiring space 8 is closed by a ballast mounting plate 16 made of an aluminum plate, so that the wiring is sealed in the storage recess 5. By enclosing the wiring in the storage recess 5 of the aluminum ceiling receiving members 4a and 4b and sealing the ballast 14 in the storage recess 5 of the ceiling receiving member 4b, the inverter ballast 14 and the Electromagnetic noise generated from the connected wiring is electromagnetically shielded. On both side edges of the upper surface of the upper plate 4c of the ceiling receiving member 4b, both end portions 10c and 10d of the air filter unit 10 described above are placed via airtight packing 11.
[0017]
In the ceiling structure 1 of such a clean room, the storage recess 5 for storing the fluorescent tube 6 is formed in the ceiling receiving member 4a, and the fluorescent tube 6 is incorporated in the storage recess 5, thereby making the lower surface of the ceiling receiving member different from the conventional case. As compared with the case where the fluorescent tubes are projected and mounted on the slab, the effective floor height can be increased by the projected dimension of the fluorescent tubes, so that the predetermined effective floor height can be increased without increasing the height of the upper slab 2. As a result, it is not necessary to design the height of the upper floor slab 2 to be high, thereby reducing the construction cost, and it is not necessary to circulate, air-condition, and clean the excess air, and the running can be performed. Costs can be kept low.
[0018]
Further, by introducing the clean air introduced into the storage recess 5 from the air introduction hole 12 into the fluorescent tube 6 through the air passage hole 13 of the reflector 7, an air flow is formed around the fluorescent tube 6. Since the dust and the like are prevented from adhering, the cleanliness of the clean room can be improved, and the air flow is allowed to flow from the lower opening of the ceiling receiving member 4a into the room. The airflow distribution below the ceiling can be made uniform.
[0019]
Further, wiring is sealed in the storage recess 5 of the aluminum ceiling receiving members 4a and 4b, and a ballast 14 is sealed in the storage recess 5 of the ceiling receiving member 4b, so that the inverter ballast 14 and the wiring connected thereto are removed. Since the generated electromagnetic wave noise is electromagnetically shielded, the generation of noise can be satisfactorily prevented even when an inverter ballast type lighting fixture is used as in this embodiment.
[0020]
Further, since the fluorescent tube 6 is housed in the housing concave portion 5 of the ceiling receiving member 4a, the fluorescent tube 6 is not exposed to the outside, so that a protective cover or the like that reduces the brightness of the fluorescent tube 6 is provided. The clean room can be made brighter by eliminating the need for installation.
Further, since the edge of the air filter unit 10 is placed on the upper plate 4c of the ceiling receiving members 4a, 4b, the load of the air filter unit 8 can be received well.
[0021]
In the above-described embodiment, the case where the air introduction hole 12 is formed in the upper plate 4c of the ceiling receiving member 4a, which is the mounting portion of the air filter unit 10, is taken as an example. However, the present invention is not limited to this. As shown in FIG. 5, the air introduction holes 12 may be formed above the both side plates 4d and 4e of the ceiling receiving member 4c. By doing so, it is not necessary to secure a space for forming the air introduction hole 12 in the upper plate c of the ceiling receiving member 4a, and as a result, the width of the ceiling receiving member 4a can be reduced, and a compact ceiling receiving member can be obtained. 4a.
[0022]
Further, in the above-described embodiment, the case where the slim type fluorescent tubes 6 are incorporated one by one along the longitudinal direction into the storage recess 5 of the ceiling receiving member 4a is taken as an example. Two or more tubes 6 may be incorporated along the longitudinal direction, and a normal fluorescent tube having a larger diameter than the slim type may be incorporated.
[0023]
Further, in the above-described embodiment, the fluorescent tube 6 is taken as an example of the lighting fixture, but other lighting fixtures such as an incandescent lamp may be incorporated in the storage recess 5 of the ceiling receiving member 4a instead.
Furthermore, in the above-described embodiment, the ceiling receiving member 4 is formed of an embossing material of aluminum, but is not limited to this. The ceiling receiving member 4 is formed by bending a stainless steel plate or other metal plate. Alternatively, a resin molded integrally with a synthetic resin having excellent heat resistance, strength and corrosion resistance may be used.
[0024]
Further, in the above-described embodiment, the ceiling receiving members 4 are arranged in a direction orthogonal to each other and assembled in a cross-girder shape, and the fluorescent tubes 6 and the short-side ceiling receiving members are provided in the storage recesses 5 of the long side ceiling receiving member 4a. While the case is assembled ballast 14 respectively in the housing recess 5 of 4b taken as an example, without being limited thereto, for example, long side ceiling received in housing recess 5 of the member 4a of the fluorescent tube 6 and the ballast 14 Both may be assembled.
[0025]
【The invention's effect】
As apparent from the above description, according to the first and second aspects of the present invention, the ceiling receiving member is provided with a storage recess for storing a lighting fixture (a fluorescent tube in claim 2) , and the lighting fixture is incorporated in the storage recess. Thereby, the effective floor height can be increased by the protrusion dimension of the fluorescent tube as compared with the case where the fluorescent tube is projected and attached to the lower surface of the ceiling receiving member as in the related art, so that the height of the upper floor slab is reduced. It is possible to obtain a predetermined effective floor height without raising the height, and as a result, it is not necessary to design to raise the height of the upper floor slab, so that construction costs can be reduced, and excess air is circulated and air-conditioned. In addition, there is no need for cleaning, and the effect that the running cost can be kept low can be obtained.
[0026]
Further, since the lighting equipment is stored in the storage recess of the ceiling receiving member, the lighting equipment is not exposed to the outside, and therefore, there is no need to attach a protective cover or the like that lowers the brightness of the lighting equipment. This has the effect of making the clean room brighter .
[0027]
According to the first and second aspects of the invention, the clean air introduced into the storage recess from the air introduction hole is introduced into the lighting fixture (the fluorescent tube in claim 2) , thereby forming an air flow around the lighting fixture. Since dust and the like are prevented from adhering, the cleanliness of the clean room can be improved, and the air flow can be made to flow out from the opening of the storage recess into the room, so that the air flow distribution under the ceiling can be uniform. The effect that it can be achieved is obtained.
[0028]
In the invention of claim 1 and 2, the luminaire (fluorescent tubes in claim 2) Preparations to give a reflective shade, clean air having flowed into the accommodating recess from said air inlet holes through the air passage hole of the reflector By being introduced into the lighting equipment, an air flow is formed around the lighting equipment to prevent dust and the like from adhering, so that the cleanliness of the clean room can be improved and the air can be improved. By making the flow flow out of the opening of the storage recess into the room, it is possible to obtain an effect that the airflow distribution under the ceiling can be made uniform.
In the invention of claim 2, further with encapsulating ballast in the housing recess of the aluminum roof receiving member, the ballast closes the lower opening of the encapsulated aluminum roof receiving member in closure plate made of aluminum plate Thus, since electromagnetic wave noise generated from the ballast is electromagnetically shielded, it is possible to obtain an effect that the generation of noise can be satisfactorily prevented even when an inverter ballast type lighting fixture is used.
[Brief description of the drawings]
FIG. 1 is an explanatory schematic diagram for explaining a ceiling structure of a clean room which is an example of an embodiment of the present invention.
FIG. 2 is a top view of the ceiling as viewed from the direction of arrow (2) in FIG. 1;
FIG. 3 is a sectional view taken along the line [3]-[3] in FIG. 2;
FIG. 4 is a sectional view taken along line 4-4 in FIG. 2;
FIG. 5 is an explanatory diagram for explaining an example in which air introduction holes are formed on both sides of a ceiling receiving member.
FIG. 6 is an explanatory schematic diagram for explaining a ceiling structure of a conventional clean room.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Ceiling structure 2 ... Upper floor slab 3 ... Hanging bolt 4 ... Ceiling receiving member 5 ... Storage recess 6 ... Fluorescent tube (lighting fixture)
7 Reflector shade 10 Air filter unit 12 Air introduction hole 13 Air passage hole 14 Stabilizer (lighting equipment)

Claims (2)

In a ceiling structure of a clean room including a suspension bolt attached to an upper floor slab, a ceiling receiving member provided at a lower end of the suspension bolt, and an air filter unit whose edge is placed on the ceiling receiving member,
The ceiling receiving member is provided with a storage recess for storing a lighting fixture, the lighting fixture is incorporated in the storage recess, and an air introduction hole for introducing air into the lighting fixture is formed in the ceiling receiving member, and the lighting fixture is a reflection type. A ceiling structure of a clean room, comprising a shade, and an air passage hole through which the air flowing from the air introduction hole can pass is formed in the reflection shade. In a ceiling structure of a clean room including a suspension bolt attached to an upper floor slab, a ceiling receiving member provided at a lower end of the suspension bolt, and an air filter unit whose edge is placed on the ceiling receiving member,
It said ceiling undergo housing recess provided in the member incorporates a fluorescent tube to the housing recess, forming the ceiling receives air introducing hole for introducing air into the fluorescent tube member having an accommodation recess fluorescent tube is incorporated, The fluorescent tube has a reflector, and the reflector has an air passage hole through which the air introduced from the air introduction hole can pass.
A ballast of the fluorescent tube is sealed in the storage recess in which the fluorescent tube is not incorporated, and a lower opening of an aluminum ceiling receiving member in which the ballast is sealed is closed with a closing plate made of an aluminum plate. And clean room ceiling structure.

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