JP2021118127A - Power system, system ceiling, and lighting system - Google Patents

Abstract

To achieve reduction of a load applied to a ceiling panel.SOLUTION: A power system 4 includes: a power unit 40 which supplies electric power to an equipment instrument of a system ceiling 6; and a support member 41 which supports the power unit 40. The support member 41 has: an attachment part 42 to which the power unit 40 is attached; and support parts 43 which enable the attachment part 42 to be supported by the system ceiling 6. At least one support part 43 of the support parts 43 is supported by a T bar 61 of the system ceiling 6.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to power supply systems, system ceilings and lighting systems. More specifically, the present disclosure relates to a power supply system that supplies power to equipment installed on the system ceiling, a system ceiling that includes the power supply system, and a lighting system that includes the power supply system.

Conventionally, a system ceiling is often installed on the ceiling of a building such as an office building. In general, a system ceiling is a suspended ceiling that is a combination of unit ceilings, and is a ceiling that has the function of mounting ceiling panels and facilitating the installation of equipment such as lighting fixtures and air conditioning outlets (Japanese Industrial Standard A1445 "System Ceiling"). Refer to "Test method for components").

Equipment installed on the system ceiling includes equipment that requires power supply, such as lighting fixtures. For example, Patent Document 1 discloses a lighting fixture for a system ceiling. The system ceiling lighting fixture described in Patent Document 1 includes a lamp socket, a lighting device (power supply device) that supplies power to a fluorescent lamp via the lamp socket, a lamp socket, and a T-bar on the system ceiling to which the lamp socket and the lighting device are attached. It is equipped with an instrument body that is supported by. That is, in the system ceiling lighting fixture described in Patent Document 1, the lighting device (power supply device) is integrally configured with the lighting fixture.

Japanese Unexamined Patent Publication No. 8-17238

By the way, in the system ceiling, a lighting device (power supply device) and a lighting fixture (equipment) may be configured separately. In this case, it is conceivable to attach the power supply device to the ceiling panel so that the ceiling panel supports the power supply device. However, ordinary ceiling panels may lack the strength to support the power supply.

An object of the present disclosure is to provide a power supply system, a system ceiling and a lighting system capable of reducing the load applied to the ceiling panel.

The power supply system according to one aspect of the present disclosure includes a power supply device that supplies electric power to equipment on the ceiling of the system, and a support member that supports the power supply device. The support member has a mounting portion to which the power supply device is mounted, and a plurality of supporting portions for supporting the mounting portion on the system ceiling. At least one of the plurality of supports is supported by the T-bar on the system ceiling.

The system ceiling according to one aspect of the present disclosure includes the power supply system and a T-bar that supports at least one support portion among the plurality of support portions.

The lighting system according to one aspect of the present disclosure includes the power supply system and a lighting device to which power is supplied from the power supply device of the power supply system.

The power supply system, system ceiling and lighting system of the present disclosure have an effect that the load applied to the ceiling panel can be reduced.

FIG. 1 is a side view of the power supply system and the system ceiling according to the embodiment of the present disclosure. FIG. 2 is a side view of a modified example 1 of the power supply system of the above. FIG. 3 is a side view of a modified example 2 of the power supply system of the above. FIG. 4 is a perspective view of the lighting system according to the embodiment of the present disclosure. FIG. 5 is a plan view of the lighting device in the same lighting system. FIG. 6 is a cross-sectional view of a main part of the same lighting device.

Hereinafter, the power supply system 4, the system ceiling 6, and the lighting system 5 according to the embodiment of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiment is a schematic view, and the ratio of the size and the thickness of each component does not necessarily reflect the actual dimensional ratio. The configuration described in the following embodiments is only an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various changes can be made depending on the design and the like as long as the effects of the present disclosure can be achieved.

(1. Outline of power supply system according to the embodiment)
The power supply system 4 (hereinafter, abbreviated as power supply system 4) according to the embodiment includes a power supply device 40 that supplies electric power to the equipment of the system ceiling 6 and a support member 41 that supports the power supply device 40 (FIG. 1-see Fig. 4). The support member 41 has a mounting portion 42 to which the power supply device 40 is mounted, and a plurality of supporting portions 43 for supporting the mounting portion 42 on the system ceiling 6. At least one of the plurality of support portions 43 is supported by the T-bar 61 of the system ceiling 6.

Therefore, the power supply system 4 can reduce the load applied to the ceiling panel 60 by causing the T-bar 61 to receive at least a part of the load of the power supply device 40.

(2. Outline of the system ceiling according to the embodiment)
The system ceiling 6 according to the embodiment (hereinafter, abbreviated as system ceiling 6) has a power supply system 4 and a T-bar 61 that supports at least one support portion 43 among the plurality of support portions 43. (See FIGS. 1 to 4).

Therefore, the system ceiling 6 can reduce the load applied to the ceiling panel 60 by causing the T-bar 61 to receive at least a part of the load of the power supply device 40.

(3. Outline of the lighting system according to the embodiment)
The lighting system 5 (hereinafter, abbreviated as lighting system 5) according to the embodiment includes a power supply system 4 and a lighting device 1 to which power is supplied from the power supply device 40 of the power supply system 4 (see FIG. 4). ).

Therefore, the lighting system 5 can reduce the load applied to the ceiling panel 60 by causing the T-bar 61 to receive at least a part of the load of the power supply device 40.

(4. Power supply system configuration)
As shown in FIG. 1, the power supply system 4 includes a power supply device 40 and a support member 41. The power supply device 40 supplies electric power to equipment of the system ceiling 6, for example, a lighting fixture for the system ceiling.

The power supply device 40 includes a power supply circuit and a case 400 that houses the power supply circuit. The power supply circuit includes, for example, a power factor improving circuit, a step-down chopper circuit (constant current circuit), and the like, and is configured to convert AC power supplied from the power system into DC power. The power supply circuit is preferably composed of a printed circuit in which various circuit components are mounted on a printed wiring board. However, the circuit configuration of the power supply circuit is only an example, and is not limited to the circuit configuration. The case 400 is formed in a rectangular parallelepiped shape by a metal plate.

The support member 41 has a mounting portion 42 and two support portions 43. The mounting portion 42 has a mounting plate 420 and two legs 421 (see FIG. 1). The mounting plate 420 is formed in a rectangular shape by a metal plate. The two legs 421 extend downward one by one from both ends in the longitudinal direction of the mounting plate 420. Then, one support portion 43 is connected to the tip end (lower end) of each leg 421. It is preferable that the mounting plate 420 and the two legs 421 are integrally formed by bending the metal plate.

The support 43 is coupled to the T-bar 61 of the system ceiling 6. The T-bar 61 includes a vertical piece 610 formed in a long flat plate shape, a head 611 provided at one end (upper end) of the vertical piece 610 in the lateral direction, and the vertical piece 610 in the lateral direction. It has a pair of arm portions 612 provided at the end (lower end) (see FIG. 1). The head 611 is formed in a hollow square columnar shape in which both ends in the longitudinal direction are open. The head 611 is connected to the upper end of the vertical piece 610 at the center in the lateral direction on one side surface (lower surface). Each of the pair of arm portions 612 is formed in the shape of a corner with both ends open in the longitudinal direction. Each arm portion 612 protrudes from the lower end of the vertical piece 610 in a direction away from each other along the thickness direction of the vertical piece 610. The T-bar 61 is joined to each of the hanging bolts 62 by a plurality of T-hangers 63 attached to each of the plurality of hanging bolts 62 embedded in the ceiling slab of the building. Each of the plurality of T hangers 63 is screwed to one of the plurality of suspension bolts 62 corresponding to the suspension bolt 62, and the head 611 of the T bar 61 is sandwiched from the lateral direction of the head 611. It is attached to the T-bar 61.

The support portion 43 is formed in a square tubular shape. A linear opening is provided on the lower surface of the support portion 43. The support portion 43 is coupled to the head portion 611 of the T-bar 61 by covering the head portion 611 of the T-bar 61 through the opening on the lower surface (see FIG. 1).

The power supply device 40 is attached to the upper surface of the mounting plate 420 by, for example, screwing the mounting plate 420 of the case 400 and the mounting portion 42. Then, the support member 41 is supported by the two T-bars 61 by connecting the two support portions 43 one by one to the heads 611 of the two T-bars 61 facing each other with the ceiling panel 60 in between. (See FIG. 1). Although not shown, the power supply device 40 has an electric cable for output, and supplies DC power to equipment (for example, a lighting fixture for a system ceiling) via the electric cable. It is configured in.

Therefore, the power supply system 4 can reduce the load applied to the ceiling panel 60 by causing the T bar 61 to receive the load of the power supply device 40 via the support member 41.

(5. Modification example of power supply system)
Some modifications of the power supply system 4 according to the embodiment will be described. However, each of the two modifications (modifications 1 and 2) described below is characterized by the configuration of the support member 41, and the configuration other than the support member 41, that is, the configuration of the power supply device 40 is described in the embodiment. It is common with the power supply system 4.

(5-1. Modification example of power supply system 1)
In the power supply system 4 of the first modification, the support member 41 is a mounting portion 42 to which the power supply device 40 is mounted, a first support portion 44 supported by the T bar 61, and a second support portion supported by the suspension bolt 62. (See FIG. 2).

The mounting portion 42 has a mounting plate 420 formed in a rectangular shape by a metal plate, and legs 421 protruding downward from the first end (right end in FIG. 2) in the longitudinal direction of the mounting plate 420. In the first modification, the mounting plate 420 and the leg 421 are preferably integrally formed by bending one metal plate.

The first support portion 44 is formed in a hook shape. The first support portion 44 is connected to the tip end (lower end) of the leg 421 of the mounting portion 42. The first support portion 44 is hooked on the head portion 611 of the T bar 61 (see FIG. 2).

The second support portion is formed integrally with the mounting plate 420 at the second end (left end in FIG. 2) in the longitudinal direction of the mounting plate 420. That is, a U-shaped notch is provided in the center of the second end of the mounting plate 420 in the lateral direction, and the peripheral edge portion of the notch at the second end of the mounting plate 420 corresponds to the second support portion. The second support portion is supported by two nuts 64 screwed into the suspension bolt 62 so as to be sandwiched from the thickness direction (vertical direction) of the mounting plate 420 (see FIG. 2).

Therefore, in the power supply system 4 of the modified example 1, the load applied to the ceiling panel 60 can be reduced by receiving the load of the power supply device 40 on the T-bar 61 and the suspension bolt 62 via the support member 41. ..

(5-2. Deformation example 2 of power supply system)
In the power supply system 4 of the second modification, the support member 41 is also used as the ceiling panel of the system ceiling 6. That is, the support member 41 in the second modification includes a mounting portion 42 formed in a square flat plate shape and an inverted L-shaped support portion 43 provided on each of the four sides of the mounting portion 42. Has (see FIG. 3). The mounting portion 42 and the four support portions 43 are preferably integrally formed of a material (for example, a metal plate) having a strength that does not deform or break even when the power supply device 40 is loaded.

The power supply device 40 is attached to the upper surface of the attachment portion 42 by an appropriate method such as screwing. It is preferable that a synthetic resin sheet material having the same design as the lower surface (surface) of a general ceiling panel is attached to the lower surface of the mounting portion 42.

The support member 41 is supported on each T-bar 61 so that each of the four support portions 43 is placed on each arm portion 612 of the four T-bars 61 surrounding the support member 41.

Therefore, in the power supply system 4 of the second modification, the load applied to the ceiling panel can be reduced by causing the T-bar 61 to receive the load of the power supply device 40 via the support member 41.

(6. Lighting system configuration)
The lighting system 5 includes a power supply system 4 and a lighting device 1 to which power is supplied from the power supply device 40 of the power supply system 4 (see FIGS. 4 to 6).

(6-1. Configuration of lighting device)
The lighting device 1 includes a light source unit 2 (see FIGS. 4 to 6). The light source unit 2 has an LED module 20 and a housing 22 (see FIG. 4).

The LED module 20 has a long rectangular substrate 200 and a plurality of LEDs 201 mounted on the mounting surface (lower surface) of the substrate 200. The board 200 is a printed wiring board. Each of the plurality of LEDs 201 is, for example, a white LED for lighting. However, the plurality of LEDs 201 may include a plurality of types of white LEDs for illumination having different relative color temperatures. For example, the plurality of LEDs 201 may include a light bulb-colored LED and a daylight-colored LED. Further, instead of the LED, an organic electroluminescence element may be used as a light source. The plurality of LEDs 201 are mounted on the mounting surface of the substrate 200 so as to be arranged at substantially equal intervals along the longitudinal direction of the substrate 200.

The housing 22 has a bottom wall 220, a pair of first side walls 221 and a pair of second side walls 222, and is formed in a long box shape (see FIG. 6). The bottom wall 220 is formed in a long rectangular shape. Each of the pair of first side walls 221 is formed in a long rectangular shape. Each of the pair of first side walls 221 projects downward from the pair of side sides along the longitudinal direction of the bottom wall 220. Each of the pair of second side walls 222 is formed in a rectangular shape. The pair of second side walls 222 are connected to the bottom wall 220 and the pair of first side walls 221 one by one at both ends in the longitudinal direction. The housing 22 is preferably formed of a good conductor of heat such as metal.

Grooves 223 are provided on the inner side surfaces of the pair of first side walls 221 side by side in the vertical direction (see FIG. 6). The groove portion 223 is provided at a position near the lower end of each first side wall 221. The groove portion 223 is formed along the longitudinal direction of the first side wall 221 and parallel to the bottom wall 220.

The LED module 20 is housed in the housing 22 in a state of being supported by the pair of first side walls 221 by inserting the pair of ends along the longitudinal direction of the substrate 200 into the pair of groove portions 223 one by one. (See FIG. 6). The light radiated from the LED module 20 (a plurality of LEDs 201) is emitted from the lower surface of the housing 22 to the outside of the housing 22.

(6-2. Ceiling panel configuration)
The lighting device 1 is attached to the ceiling panel 3. The ceiling panel 3 includes a main body 30, a translucent portion 31, a mounting member 32, and a fixing member 33 (see FIGS. 4 to 6). The main body 30 is formed of, for example, a square flat plate having a sound absorbing structure made of urethane resin. It is preferable that the reinforcing aluminum sheet 303 is bonded to each of the lower surface and the upper surface of the main body 30 (see FIG. 6). In the following description, the surface (lower surface) of the aluminum sheet 303 joined to the lower surface of the main body 30 is referred to as the facing surface 300 of the main body 30.

The main body 30 is provided with an opening 301 and an accommodating portion 302. The opening 301 and the accommodating portion 302 are formed so as to divide the main body 30 into two isosceles triangular plate members along the diagonal line of the main body 30 (see FIG. 5). That is, the main body 30 has two triangular members 30A and 30B adjacent to each other with the opening 301 and the accommodating portion 302 sandwiched therein, and accommodates the opening 301 so as to be sandwiched between the two members 30A and 30B. A portion 302 is provided.

The translucent portion 31 is formed in a square shape by a translucent non-combustible material, for example, a glass fiber non-woven fabric (also referred to as glass paper). The light transmitting portion 31 is fixed to the facing surface 300 of the main body 30 (aluminum sheet 303) so as to cover the facing surface 300 of the main body 30 (see FIG. 6). However, the translucent portion 31 is not limited to the glass fiber non-woven fabric, and may be formed of, for example, a synthetic resin material having translucency such as an acrylic resin and a polycarbonate resin. Further, the light transmitting portion 31 preferably diffuses the transmitted light.

The mounting member 32 is used to mount the light source unit 2 to the main body 30 of the ceiling panel 3. The mounting member 32 has a bottom plate 320 and a pair of side plates 321 and is formed in a long square shape (see FIGS. 4 and 6). The bottom plate 320 is formed in a long rectangular shape. Each of the pair of side plates 321 is formed in a long rectangular shape. Each of the pair of side plates 321 projects upward one by one from the pair of side sides along the longitudinal direction of the bottom plate 320. The bottom plate 320 and the pair of side plates 321 are preferably integrally formed of a translucent material such as an acrylic resin, a polycarbonate resin, and a polyethylene resin. However, the bottom plate 320 and the pair of side plates 321 may be integrally formed of a non-combustible material having translucency such as quartz glass.

The light source unit 2 is housed inside the mounting member 32 (a space surrounded by the bottom plate 320 and the pair of side plates 321) so that the LED module 20 faces the bottom plate 320 (see FIG. 4). The light source unit 2 is fixed to the mounting member 32 by an appropriate method such as adhesion and screwing.

Further, the mounting member 32 is fixed to the main body 30 (triangular members 30A and 30B) by a plurality of (four in the illustrated example) fixing members 33 (see FIG. 4). The fixing member 33 has two fixing pieces (first fixing piece 331 and second fixing piece 332) (see FIGS. 4 and 6). The first fixed piece 331 and the second fixed piece 332 are each formed in a rectangular flat plate shape. The fixing member 33 is formed in an L shape by connecting the side sides of the first fixing piece 331 and the second fixing piece 332 along the longitudinal direction. In the fixing member 33, it is preferable that the first fixing piece 331 and the second fixing piece 332 are integrally formed by bending a rectangular metal plate. However, the first fixed piece 331 and the second fixed piece 332 may be integrally formed as a molded body made of synthetic resin.

The first fixing piece 331 is fixed to the upper surface of the main body 30 of the ceiling panel 3 by an appropriate method such as adhesion or screwing. The second fixing piece 332 is fixed to the side plate 321 of the mounting member 32 protruding above the upper surface of the main body 30 from the accommodating portion 302 of the main body 30 by an appropriate method such as adhesion or screwing.

Here, as shown in FIG. 4, the ceiling panel 3 preferably has a plurality of (8 in the illustrated example) hook members 34. These hooking members 34 are configured to be hooked on the T-bar 61 of the system ceiling 6 to attach the ceiling panel 3 to the T-bar 61. One hook member 34 is attached to each end of each of the four sides on the upper surface of the main body 30.

(6-3. Configuration of power supply system)
As shown in FIG. 4, the power supply system 4 includes a power supply device 40 and a support member 41. However, the power supply system 4 has the same configuration as the power supply system 4 according to the embodiment already described, except that the mounting plate 420 of the support member 41 is formed in a trapezoidal shape.

Thus, in the power supply system 4, the two support portions 43 of the support member 41 are coupled to the heads 611 of the two adjacent T-bars 61 so as to be orthogonal to each other, so that the two T-bars 61 are connected to each other. (See FIG. 4).

(6-4. Features of lighting equipment)
The design of the conventional lighting device (lighting fixture) for the system ceiling, in particular, the design of the surface (lower surface) exposed to the lighting space (for example, the indoor space such as the office where the system ceiling 6 is installed) is usually used. The design of the surface (lower surface) of the ceiling panel 60 is completely different. Therefore, the lighting device tends to stand out especially when the lighting device is turned off.

On the other hand, the lighting device 1 of the lighting system 5 includes a ceiling panel 3 and irradiates the lighting space with the light of the LED module 20 through the opening 301 provided on the lower surface (opposing surface 300) of the ceiling panel 3. The facing surface 300 including the opening 301 is covered with the translucent portion 31. That is, the lighting device 1 resembles the design of the facing surface 300 exposed to the lighting space to the design of the normal ceiling panel 60, and covers the opening 301 with the translucent portion 31 so that the LED module 20 is turned off. Also, the opening 301 can be made inconspicuous. As a result, the lighting device 1 can improve the design by making the opening 301 of the main body 30 inconspicuous even when the LED module 20 is turned off.

In addition, in the lighting device 1, by making the translucent portion 31 diffusible, the opening 301 of the main body 30 is made more inconspicuous as compared with the case where the translucent portion 31 does not have diffusivity, and the design is improved. Further improvement can be achieved.

Further, the lighting device 1 can satisfy the provisions of the Building Standards Act (interior restrictions) by forming the translucent portion 31 with an interior material (non-combustible material, semi-non-combustible material and flame-retardant material) having a flame retardancy or higher. ..

Further, the lighting device 1 has an accommodating portion 302 that penetrates the main body 30 of the ceiling panel 3 in the thickness direction and is connected to the opening 301, and accommodates the light source unit 2 in the accommodating portion 302. By accommodating the light source unit 2 in the accommodating portion 302, the lighting device 1 can suppress the height of the main body 30 in the thickness direction (vertical direction) and reduce the height.

However, in the lighting device 1, the opening 301 and the accommodating portion may be formed linearly along one side of the main body 30. Alternatively, the opening 301 and the accommodating portion may be formed in an L shape along two adjacent sides of the main body 30.

(7. Summary)
The power supply system (4) according to the first aspect of the present disclosure includes a power supply device (40) that supplies electric power to equipment on the system ceiling (6), and a support member (41) that supports the power supply device (40). It has. The support member (41) has a mounting portion (42) to which the power supply device (40) is mounted, and a plurality of supporting portions (43) for supporting the mounting portion (42) on the system ceiling (6). At least one of the plurality of supports (43) is supported by the T-bar (61) of the system ceiling (6).

In the power supply system (4) according to the first aspect, the load applied to the ceiling panel (60) can be reduced by having the T-bar (61) receive at least a part of the load of the power supply device (40). can.

The power supply system (4) according to the second aspect of the present disclosure can be realized in combination with the first aspect. In the power supply system (4) according to the second aspect, it is preferable that all of the plurality of support portions (43) are supported by the T bar (61).

The power supply system (4) according to the second aspect can have a high degree of freedom in mounting location with respect to the system ceiling (6).

The power supply system (4) according to the third aspect of the present disclosure can be realized in combination with the first aspect. In the power supply system (4) according to the third aspect, at least one support portion (43) other than the support portion (43) supported by the T bar (61) among the plurality of support portions (43) is a system. It is preferably supported by a hanging bolt (62) on the ceiling (6).

In the power supply system (4) according to the third aspect, the mounting strength with respect to the system ceiling (6) can be improved by distributing the load to the suspension bolts (62) and the T-bar (61).

The power supply system (4) according to the fourth aspect of the present disclosure can be realized in combination with the first aspect. In the power supply system (4) according to the fourth aspect, it is preferable that the mounting portion (42) is also used as the ceiling panel of the system ceiling (6).

The power supply system (4) according to the fourth aspect can improve the workability of the construction work.

The power supply system (4) according to the fifth aspect of the present disclosure can be realized in combination with any one of the first to fourth aspects. In the power supply system (4) according to the fifth aspect, it is preferable that the power supply device (40) supplies electric power to the lighting device (1) which is an equipment device.

The power supply system (4) according to the fifth aspect can further reduce the load applied to the ceiling panel (60) by reducing the weight of the lighting device (1).

The system ceiling (6) according to the sixth aspect of the present disclosure includes the power supply system (4) according to any one of the first to fifth aspects and at least one support portion among a plurality of support portions (43). It has a T-bar (61) that supports (43).

In the system ceiling (6) according to the sixth aspect, the load applied to the ceiling panel (60) can be reduced by having the T-bar (61) receive at least a part of the load of the power supply device (40). can.

The lighting system (5) according to the seventh aspect of the present disclosure includes the power supply system (4) according to the fifth aspect and the lighting device (1) to which power is supplied from the power supply device (40) of the power supply system (4). ) And.

In the lighting system (5) according to the seventh aspect, the load applied to the ceiling panel (60) can be reduced by having the T-bar (61) receive at least a part of the load of the power supply device (40). can.

The lighting system (5) according to the eighth aspect of the present disclosure can be realized in combination with the seventh aspect. In the lighting system (5) according to the eighth aspect, the lighting device (1) preferably includes a ceiling panel (3) and a light source (light source unit 2) attached to the ceiling panel (3). The ceiling panel (3) preferably has a plate-shaped main body (30) and a translucent portion (31) having translucency and covering a part of the main body (30). The main body (30) preferably has one or more openings (301) on the facing surface (300) facing the illumination space. The translucent portion (31) is preferably attached to the main body (30) so as to cover the facing surface (300) including one or more openings (301). The light source is preferably attached to the main body (30) and irradiates the illumination space with light through the opening (301) and the translucent portion (31).

In the lighting system (5) according to the eighth aspect, by covering the facing surface (300) of the main body (30) of the ceiling panel (3) with the translucent portion (31), the main body (30) is covered even when the light source is turned off. ) Can be made inconspicuous to improve the design.

1 Lighting device 2 Light source unit (light source)
3 Ceiling panel 4 Power supply system 5 Lighting system 6 System ceiling 30 Main body 31 Translucent part 40 Power supply device 41 Support member 42 Mounting part 43 Support part 61 T-bar 62 Hanging bolt 300 Facing surface 301 Opening

Claims (8)

A power supply that supplies power to equipment on the ceiling of the system,
A support member that supports the power supply device and
With
The support member
The mounting part to which the power supply device is mounted and
A plurality of support portions for supporting the mounting portion on the system ceiling,
Have,
At least one of the plurality of supports is supported by the T-bar on the system ceiling.
Power system. All of the plurality of supports are supported by the T-bar.
The power supply system according to claim 1. Of the plurality of support portions, at least one support portion other than the support portion supported by the T-bar is supported by a suspension bolt on the system ceiling.
The power supply system according to claim 1. The mounting portion is also used as the ceiling panel of the system ceiling.
The power supply system according to claim 1. The power supply device supplies electric power to the lighting device which is the equipment.
The power supply system according to any one of claims 1-4. With any of the power supply systems of claims 1-5,
A T-bar that supports at least one of the plurality of support portions, and a T-bar that supports at least one support portion.
have,
System ceiling. The power supply system of claim 5 and
A lighting device to which power is supplied from the power supply device of the power supply system, and
have,
Lighting system. The lighting device includes a ceiling panel and a light source attached to the ceiling panel.
The ceiling panel has a plate-shaped main body and a translucent portion that has translucency and covers a part of the main body.
The main body has one or more openings on the facing surface facing the illumination space.
The translucent portion is attached to the main body so as to cover the facing surface including the one or more openings.
The light source is attached to the main body and irradiates the illumination space with light through the opening and the translucent portion.
The lighting system according to claim 7.

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