Lighting fixture and lighting system

Abstract

To reduce weight while simplifying the configuration of a system.SOLUTION: A first lighting fixture 301 is installed to a first ceiling support bar 510 or a second ceiling support bar 520. The first lighting fixture 301 includes a light source part 211, a power supply part 150, and a power output part 311. The light source part 211 emits light. The power supply part 150 generates second power for causing the light source part 211 to emit light and supplies the power to the light source part 211 on the basis of first power. The power output part 311 outputs the second power supplied from the power supply part 150 to a second lighting fixture 302.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lighting fixture and a lighting system. [Background technology]

[0002] The lighting device of Patent Document 1 comprises a light source unit having a plurality of light-emitting elements, a power supply unit that supplies lighting power to the light source unit, and a base on which the light source unit is mounted on the front side and the power supply unit is mounted on the back side, and the light source unit and the power supply unit are electrically connected by a conductive pin that passes through the base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-009700 A Summary of the Invention [Problem to be solved by the invention]

[0004] As disclosed in Patent Document 1, a lighting device generally requires a power supply for supplying lighting power to light-emitting elements, which complicates the system configuration and increases the weight of the lighting device.

[0005] The present invention has been made in view of the above problems, and has an object to provide a lighting fixture and a lighting system that can simplify the system configuration and reduce weight. [Means for solving the problem]

[0006] A lighting fixture according to the present invention is installed on a mounting body. The lighting fixture according to the present invention includes a first light source unit, a power supply unit, and a first output unit. The first light source unit emits light. The power supply unit generates a second power based on a first power, which causes the first light source unit to emit the light, and supplies the second power to the first light source unit. The first output unit outputs the second power supplied from the power supply unit to another lighting fixture.

[0007] The lighting device according to the present invention preferably further comprises a first light source unit and a base unit. The first light source unit preferably includes a frame member extending in a first direction, on which the first light source section is arranged, and a cover member covering the first light source section. The base unit is preferably detachably attached to the first light source unit, and preferably installs the first light source unit on the mounting body. The power supply section and the first output section are preferably arranged in the first light source unit.

[0008] The lighting fixture according to the present invention is installed on a mounting body. The lighting fixture according to the present invention includes a connection portion and a second light source portion. The connection portion is electrically connected to another lighting fixture. The second light source portion emits light. Electricity for causing the second light source portion to emit the light is supplied to the second light source portion from the other lighting fixture via the connection portion.

[0009] The lighting device according to the present invention preferably further comprises a second light source unit and a base unit. The second light source unit preferably includes a frame member extending in a first direction and on which the second light source section is arranged, and a cover member covering the second light source section. The base unit is preferably detachably attached to the second light source unit and installs the second light source unit on the mounting body. The connection portion is preferably arranged on the second light source unit.

[0010] In the lighting device of the present invention, it is preferable that the second light source unit further has a second output portion that outputs the power supplied via the connection portion to a lighting device other than the other lighting device.

[0011] In the lighting fixture according to the present invention, the mounting body is preferably a T-bar that constitutes a system ceiling.

[0012] The lighting system according to the present invention includes a first lighting device and a second lighting device. The first lighting device is installed on a mounting body. The second lighting device is installed on the mounting body. The first lighting device has a first light source unit, a power supply unit, and an output unit. The first light source unit emits light. The power supply unit generates a second power for causing the first light source unit to emit the light based on a first power supplied to the first lighting device and supplies the second power to the first light source unit. The output unit outputs the second power supplied from the power supply unit to the second lighting device. The second lighting device has a connection unit and a second light source unit. The connection unit is electrically connected to the output unit and receives the second power. The second light source unit is supplied with the second power via the connection unit and emits light. Effect of the Invention

[0013] According to the present invention, the system configuration can be simplified and made lighter. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic plan view showing a lighting system and a system ceiling according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view of a first lighting fixture and a second lighting fixture according to the embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing the internal structure of a first lighting fixture and a second lighting fixture. [Figure 4] FIG. 2 is an exploded view of a first lighting fixture and a second lighting fixture according to the embodiment of the present invention. [Diagram 5] FIG. 11 is a schematic plan view showing an example of how a plurality of second lighting fixtures are connected in a lighting system. [Figure 6] FIG. 11 is a schematic plan view showing an example of how a plurality of second lighting fixtures are connected in a lighting system. [Figure 7]FIG. 11 is a schematic plan view showing an example of how a plurality of second lighting fixtures are connected in a lighting system. [Figure 8] FIG. 11 is a schematic plan view showing an example of how a plurality of second lighting fixtures are connected in a lighting system. [Figure 9] FIG. 1 is a perspective view of a first modified example of a lighting system according to an embodiment of the present invention. [Figure 10] FIG. 2 is a perspective view of a first modified example of a lighting system according to an embodiment of the present invention, seen from a different angle. [Figure 11] FIG. 11 is a perspective view of a second modified example of a lighting system according to an embodiment of the present invention. [Figure 12] FIG. 13 is a schematic plan view showing a third modified example of a lighting system according to an embodiment of the present invention and a system ceiling. [Figure 13] FIG. 2 is a perspective view of a return structure according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference symbols, and description will not be repeated. In addition, in the drawings, the X-axis, Y-axis, and Z-axis of a three-dimensional orthogonal coordinate system are appropriately described for ease of understanding. The X-axis and Y-axis are parallel to the horizontal direction, and the Z-axis is parallel to the vertical direction. The positive direction of the Z-axis indicates the vertically upward direction, and the negative direction of the Z-axis indicates the vertically downward direction.

[0016] A lighting system 300 according to an embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic plan view showing the lighting system 300 according to the embodiment of the present invention and a system ceiling 500. Fig. 1 shows the system ceiling 500 when viewed from inside a room.

[0017] As shown in FIG. 1, the system ceiling 500 is placed in the upper space of a room. The system ceiling 500 is fixed to the tip or the vicinity of a rod-shaped fixing member (such as a hanging bolt) extending downward from the steel frame of a building. In other words, the system ceiling 500 is suspended from the steel frame of the building. The system ceiling 500 includes a plurality of first ceiling support bars (T bars) 510 and a plurality of second ceiling support bars (T bars) 520. Each of the plurality of first ceiling support bars 510 extends along the Y-axis direction. Each of the plurality of second ceiling support bars 520 extends along the X-axis direction. The system ceiling 500 is configured by arranging the plurality of first ceiling support bars 510 and the plurality of second ceiling support bars 520 in a lattice pattern. In this embodiment, the system ceiling 500 is partitioned into a plurality of square regions R by the plurality of first ceiling support bars 510 and the plurality of second ceiling support bars 520. For example, by fitting a square ceiling panel P (see FIG. 12) of approximately the same size as the square area R formed by the first ceiling support bar 510 and the second ceiling support bar 520 into the square area R, a ceiling surface can be formed that covers the upper space of the room. The first ceiling support bar 510 and the second ceiling support bar 520 correspond to an example of a "T-bar" used in a system ceiling. The "T-bar" is an example of a "mounting body."

[0018] The lighting system 300 is attached to a system ceiling 500. More specifically, the lighting system 300 includes a first lighting fixture 301 and a second lighting fixture 302. Each of the first lighting fixture 301 and the second lighting fixture 302 is an example of a "lighting fixture". The first lighting fixture 301 is attached to a first ceiling support bar 510 and a second ceiling support bar 520 in the system ceiling 500. The second lighting fixture 302 is attached to the first ceiling support bar 510 and the second ceiling support bar 520, and is used together with the first lighting fixture 301. As a result, the lighting system 300 is attached to a ceiling surface. Note that the area R in the system ceiling 500 where the first lighting fixture 301 or the second lighting fixture 302 is attached has a rectangular opening. Therefore, the ceiling board P that can be fitted into the area R where the first lighting fixture 301 or the second lighting fixture 302 is attached is rectangular. In this embodiment, the first lighting fixture 301 and the second lighting fixture 302 are attached to the system ceiling 500 so as to be aligned in a straight line along the X-axis direction. In this manner, the lighting system 300 is configured based on the standard of a T-bar used in a typical system ceiling 500, and is therefore highly versatile.

[0019] An illumination system 300 according to an embodiment of the present invention will be described with reference to Figs. 1 to 4. Fig. 2 is a perspective view of a first illumination fixture 301 and a second illumination fixture 302 according to an embodiment of the present invention. Fig. 3 is a diagram showing the internal structure of the first illumination fixture 301 and the second illumination fixture 302. Fig. 3 is an enlarged view of a portion of Fig. 2. Fig. 4 is an exploded view of the first illumination fixture 301 and the second illumination fixture 302 according to an embodiment of the present invention. Figs. 2 and 4 show a state in which the ceiling panel P has been removed for ease of understanding.

[0020] As shown in Figs. 2 and 4, the first lighting device 301 in the lighting system 300 includes a light source unit 211, a power supply unit 150, and a power output unit 311. The light source unit 211 emits light. The light source unit 211 is an example of a "first light source unit." The power supply unit 150 supplies power to the light source unit 211. The power output unit 311 outputs the power supplied from the power supply unit 150 to, for example, the second lighting device 302. The power output unit 311 is an example of a "first output unit." Details of the configurations of the light source unit 211, the power supply unit 150, and the power output unit 311 will be described later. The second lighting device 302, to which the power output unit 311 outputs the power, is an example of an "other lighting device."

[0021] In lighting system 300, by providing power output unit 311 in first lighting fixture 301, it is possible to distribute power supplied from power supply unit 150 to light source unit 211 to lighting fixtures other than first lighting fixture 301 in lighting system 300, such as second lighting fixture 302. As a result, it is possible to emit light from lighting fixtures other than first lighting fixture 301 in lighting system 300 without providing a power supply unit in the lighting fixtures other than first lighting fixture 301 in lighting system 300. Therefore, the number of power supply units in lighting system 300 can be reduced, the configuration of lighting system 300 can be simplified, and the weight of lighting fixtures other than first lighting fixture 301 in lighting system 300 can be reduced.

[0022] As shown in Figs. 2 and 4, the second lighting device 302 in the lighting system 300 includes a light source unit 212 and a power input unit 322. The light source unit 212 emits light. The light source unit 212 is an example of a "second light source unit". The power input unit 322 is electrically connected to the first lighting device 301. Specifically, the power input unit 322 is connected to the power output unit 311 in the first lighting device 301 by a harness 303 (Fig. 3). Power supplied from the power supply unit 150 in the first lighting device 301 to the light source unit 211 is distributed and input to the power input unit 322 via the power output unit 311. The power input unit 322 supplies the input power to the light source unit 212. That is, the light source unit 212 is supplied with power from the first lighting device 301 via the power output unit 311. The power input unit 322 is an example of a "connection unit". The configurations of the light source unit 212, the power output unit 311, and the harness 303 will be described in detail later.

[0023] In the lighting system 300, by providing the power input unit 322 in the second lighting device 302, it becomes possible for the first lighting device 301 to supply power to the light source unit 212. As a result, it becomes possible to cause the light source unit 212 to emit light without providing a power supply unit in the second lighting device 302. Therefore, in the lighting system 300, the number of power supply units can be reduced, the configuration of the lighting system 300 can be simplified, and the weight of the lighting devices in the lighting system 300 other than the first lighting device 301 can be reduced.

[0024] Next, first luminaire 301 and second luminaire 302 will be described in detail with reference to Figs. 2 to 4.

[0025] [First light source unit] 4, the first lighting fixture 301 includes a base unit 100 and a light source unit 201. The light source unit 201 is an example of a "first light source unit."

[0026] The base unit 100 is installed on a ceiling support bar (first ceiling support bar 510 or second ceiling support bar 520). In other words, the base unit 100 is attached to the first ceiling support bar 510 or the second ceiling support bar 520. The base unit 100 has a main body portion 110, a first mounting portion 120, and two second mounting portions 130.

[0027] The main body 110 is generally elongated. The main body 110 extends along the longitudinal direction PD (X-axis direction). The main body 110 is made of, for example, metal (for example, aluminum). The main body 110 is formed, for example, by extrusion molding, and has a constant cross-sectional shape from one end to the other end in the longitudinal direction PD. Specifically, the main body 110 has a generally U-shaped cross section in the longitudinal direction PD.

[0028] The first mounting portion 120 and the two second mounting portions 130 are provided on the main body 110. The first mounting portion 120 is made of, for example, metal (for example, aluminum). The first mounting portion 120 preferably has high rigidity. That is, the first mounting portion 120 preferably does not have spring properties. The first mounting portion 120 may have spring properties. In this embodiment, the first mounting portion 120 is attached to at least one of two surfaces of the main body 110 extending along the Z-axis direction. In the example of FIG. 2 and FIG. 3, the first mounting portion 120 is attached to the surface of the main body 110 on the +Y direction side. Also, the first mounting portion 120 is provided on one side (+X direction side) or the other side (-X direction side) of the center in the longitudinal direction PD (X-axis direction). The first mounting portion 120 protrudes from the main body 110 in the +Y direction. In the longitudinal direction PD, the length of the first attachment portion 120 is shorter than the length of the main body portion 110. In the Z-axis direction, the +Z side of the first attachment portion 120 is fixed to the main body portion 110, and the -Z side is separated from the main body portion 110.

[0029] Each of the two second mounting parts 130 is made of, for example, metal (for example, aluminum). Each of the two second mounting parts 130 has spring properties. The two second mounting parts 130 include a second mounting part 130a and a second mounting part 130b. Each of the two second mounting parts 130 is provided on the main body part 110. In detail, the second mounting part 130a is provided on an end part of the main body part 110 on the +X direction side. The second mounting part 130b is provided on an end part of the main body part 110 on the -X direction side. Each of the two second mounting parts 130 mounts the main body part 110 to a ceiling support bar (the first ceiling support bar 510 or the second ceiling support bar 520). Each of the two second mounting parts 130 protrudes from the main body part 110 in the longitudinal direction PD. Here, the second mounting portion 130a protrudes from the main body 110 in the +X direction. The second mounting portion 130b protrudes from the main body 110 in the -X direction. The second mounting portion 130a is provided on the +Y side of the center of the main body 110 in an orthogonal direction QD (Y-axis direction) perpendicular to the longitudinal direction PD. On the other hand, the second mounting portion 130b is provided on the -Y side of the center of the main body 110 in the orthogonal direction QD. In this way, the lighting system 300 has a structure suitable for attachment to the first ceiling support bar 510 and the second ceiling support bar 520.

[0030] The light source unit 201 includes a light source section 211 , a frame member 220 , a cover member 230 , a plurality of mounting springs 240 , a power supply section 150 , and a power output section 311 .

[0031] Specifically, the light source unit 201 accommodates the light source section 211. The light source unit 201 is substantially elongated. In other words, the light source unit 201 extends along the longitudinal direction PD (X-axis direction). The longitudinal direction PD is an example of the "first direction". The light source section 211 emits light. The light source section 211 is, for example, an LED module in which a plurality of light-emitting elements such as LEDs (Light Emitting Diodes) are arranged in a straight line. The light source section 211 is disposed in a frame member 220. In detail, the frame member 220 is a plate-like member and has a rectangular shape that is long in the longitudinal direction PD. A plurality of light-emitting elements are attached to the frame member 220. The cover member 230 covers the arrangement surface of the light-emitting elements in the frame member 220. That is, the light-emitting surfaces of the plurality of light-emitting elements in the light source section 211 face the inner surface of the cover member 230, and emit light toward the inner surface of the cover member 230. As a result, the light is emitted to the outside of the first lighting fixture 301 through the cover member 230.

[0032] The frame member 220 may be a member made of a metal such as aluminum. In this embodiment, the frame member 220 is made of a metal and functions as a heat sink for the light emitting unit 210. The frame member 220 is formed by, for example, an extrusion molding method. By forming the frame member 220 by an extrusion molding method, the cross-sectional shape of the frame member 220 becomes constant from one end to the other end in the longitudinal direction of the frame member 220.

[0033] The cover member 230 extends along the longitudinal direction PD. The cover member 230 covers the light source unit 211. The cover member 230 is made of, for example, a synthetic resin. The cover member 230 diffuses, for example, the light emitted by the light source unit 211. The cover member 230 may be, for example, white and semi-transparent. The cover member 230 may be formed, for example, by molding a resin containing a light diffusion material, or may be formed by molding a transparent material and then performing a light diffusion treatment (including a minute unevenness forming treatment and a translucent white coating) on ​​the surface. The cover member 230 has, for example, a substantially U-shaped cross section.

[0034] The power supply unit 150 has a terminal block 150T and a power supply module 150M. The power supply unit 150 is disposed in the light source unit 201. As an example, the terminal block 150T and the power supply module 150M are attached to the frame member 220. Specifically, the terminal block 150T and the power supply module 150M are attached to a surface of the frame member 220 opposite to the surface on which the light emitting elements are disposed. For example, the power supply module 150M is disposed approximately in the center of the frame member 220. The terminal block 150T is disposed on the +X side of the power supply module 150M in the frame member 220.

[0035] The power supply module 150M is connected to the terminal block 150T via an internal power line (not shown). An AC voltage transmitted through an external power line (not shown) is applied to the internal power line via the terminal block 150T. The internal power line transmits the AC voltage to the power supply module 150M. The power supply module 150M generates power used in the light source unit 211 based on the AC voltage. Specifically, the power supply module 150M generates power from the AC voltage to cause a plurality of light-emitting elements in the light source unit 211 to emit light. The power supply module 150M of this embodiment generates a DC voltage from the AC voltage to cause the light-emitting elements to emit light. The AC voltage is an example of a "first power", and the DC voltage is an example of a "second power".

[0036] The power output unit 311 is disposed in the light source unit 201. The power output unit 311 is, for example, a connector to which the harness 303 can be attached and detached (inserted and removed). For example, the power output unit 311 is disposed on a surface of the frame member 220 on which the terminal block 150T and the power supply module 150M are disposed. As an example, the power output unit 311 is disposed on the opposite side (-X side) of the terminal block 150T with the power supply module 150M in between.

[0037] The power output unit 311 is connected to the output side of the power supply module 150M via an internal power line (not shown). Therefore, the DC voltage generated by the power supply module 150M is applied to the power output unit 311. In other words, the power output unit 311 outputs the power supplied from the power supply module 150M.

[0038] 4, the power output unit 311 is arranged so that the insertion side of the harness 303 faces the -X side, but the arrangement and orientation of the power output unit 311 are not particularly limited. For example, the arrangement of the terminal block 150T and the power output unit 311 in the frame member 220 may be reversed. In addition, the shape, material, type, and number of terminals of the power output unit 311 are not particularly limited. Furthermore, the power output unit 311 is not limited to a connector, and may be a terminal block to which a cable or the like is wired.

[0039] The mounting springs 240 are attached to the frame member 220 at intervals. Specifically, the mounting springs 240 are attached to both ends of the frame member 220 in the longitudinal direction PD (X-axis direction) on a surface on which the terminal block 150T, the power supply module 150M, and the power output unit 311 are arranged. The light source unit 201 is attached to the base unit 100 by the mounting springs 240. In other words, the base unit 100 is detachably attached to the light source unit 201. For example, each of the mounting springs 240 has elasticity and is made of metal (for example, stainless steel). When the mounting springs 240 are fitted into the main body 110, the light source unit 201 is attached to the base unit 100 by the elasticity of the mounting springs 240. The dimension of the mounting spring 240 in the Y-axis direction may be any dimension that allows the mounting spring 240 to pass through an opening of the base unit 100 when the light source unit 201 is attached to the base unit 100 .

[0040] In this way, by providing the power supply unit 150 and the power output unit 311 in the light source unit 201, it becomes possible to attach and detach the power supply unit 150 and the power output unit 311 together with the light source unit 201 from the base unit 100. This makes it possible to easily install the first lighting fixture 301 in the lighting system 300.

[0041] [Second light source unit] As shown in Fig. 4, the second lighting fixture 302 includes a base unit 100 and a light source unit 202. The light source unit 202 is an example of a "second light source unit." The base unit 100 in the second lighting fixture 302 is the same as the base unit 100 in the first lighting fixture 301, and therefore a description thereof will be omitted. The light source unit 202 includes a light source section 212 that is the same as the light source section 211 in the light source unit 201, a frame member 220, a cover member 230, and a plurality of mounting springs 240.

[0042] Specifically, the light source unit 202 accommodates the light source section 212. The light source unit 202 is substantially elongated. In other words, the light source unit 202 extends along the longitudinal direction PD (X-axis direction). The light source section 212 emits light. The configurations of the light source section 212, frame member 220, cover member 230, and multiple mounting springs 240 in the light source unit 202 are the same as those of the light source section 211, frame member 220, cover member 230, and multiple mounting springs 240 in the light source unit 201, and therefore description thereof will be omitted.

[0043] In this manner, either light source unit 201 (first light source unit) accommodating light source section 211 (first light source section) or light source unit 202 (second light source unit) accommodating light source section 212 (second light source section) is attached to base unit 100. In other words, base unit 100 installs light source unit 201 (first light source unit) or light source unit 202 (second light source unit) on the ceiling support bar (first ceiling support bar 510 or second ceiling support bar 520).

[0044] In this way, the base unit 100 is used as a common part between the first lighting fixture 301 and the second lighting fixture 302. This allows the first lighting fixture 301 or the second lighting fixture 302 to be replaced in the lighting system 300 simply by replacing the light source unit 201 or the light source unit 202.

[0045] As described in the first light source unit, in the orthogonal direction QD, the second mounting portion 130a is provided on the +Y direction side of the center of the main body portion 110, and the second mounting portion 130b is provided on the -Y direction side of the center of the main body portion 110. Therefore, when the first lighting fixture 301 and the second lighting fixture 302 are attached to the first ceiling support bar 510 adjacent to each other in the longitudinal direction PD, it is possible to suppress interference between the second mounting portion 130a and the second mounting portion 130b. As a result, the first lighting fixture 301 and the second lighting fixture 302 can be attached to the first ceiling support bar 510 adjacent to each other in the longitudinal direction PD.

[0046] The light source unit 202 has a power input unit 322 instead of the power supply unit 150 and the power output unit 311 in the light source unit 201. The power input unit 322 is disposed in the light source unit 202. The power input unit 322 is, for example, a connector to which the harness 303 can be attached and detached (inserted and removed). For example, the power input unit 322 is disposed on the surface of the frame member 220 opposite to the surface on which the light emitting elements are arranged. As an example, the power input unit 322 is attached to a support member 400 provided on the frame member 220. For example, the support member 400 extends perpendicularly to the surface of the frame member 220 opposite to the surface on which the light emitting elements are arranged and along the longitudinal direction PD. The power input unit 322 is connected to the light source unit 212 via an internal power line (not shown). The light source unit 202 may also have a power output unit 321. The power output unit 321 will be described later.

[0047] When the power input unit 322 and the power output unit 311 are connected via the harness 303 between the light source unit 201 and the light source unit 202, power from the light source unit 201 is input to the power input unit 322. In other words, when the power input unit 322 and the power output unit 311 are connected via the harness 303 between the light source unit 201 and the light source unit 202, a DC voltage generated by the power supply module 150M of the light source unit 201 is applied to the power input unit 322. As a result, a current flows through the light source unit 212 via an internal power line (not shown), causing the light emitting element of the light source unit 212 to emit light.

[0048] Providing the power input section 322 in the light source unit 202 makes it possible to attach and detach the power input section 322 together with the light source unit 202 from the base unit 100, facilitating the installation of the second lighting fixture 302 in the lighting system 300.

[0049] Next, the connection between the light source unit 201 and the light source unit 202 by the harness 303 will be described with reference to FIG.

[0050] In this embodiment, the harness 303 includes a first connector 303a, a second connector 303b, and a cable 303c. The first connector 303a is a connector corresponding to the power output unit 311. The second connector 303b is a connector corresponding to the power input unit 322. The cable 303c connects the first connector 303a and the second connector 303b. The type, thickness, length, and number of the cable 303c are not particularly limited. For example, the cable 303c is laid around the second ceiling support bar 520 located between the first lighting fixture 301 and the second lighting fixture 302, detouring toward the base unit 100 side (+Z direction side) from the light source unit 211 and the light source unit 212.

[0051] In this embodiment, the first lighting device 301 may include a signal input / output unit 340 to / from which a control signal for controlling the light source unit 211 and the like is input / output. The signal input / output unit 340 is a connector, a terminal block, or the like, and has one or more signal inputs / outputs. The signal input / output unit 340 may be the same connector or terminal block as the power output unit 311, or may be a connector or terminal block different from the power output unit 311.

[0052] For example, the signal input / output unit 340 is disposed in the light source unit 201. Specifically, the signal input / output unit 340 is disposed on a surface of the power source module 150M. In the example shown in Fig. 3, the signal input / output unit 340 is disposed on a surface facing the +Z direction side of the power source module 150M, but the surface on which the signal input / output unit 340 is disposed in the power source module 150M is not particularly limited.

[0053] Furthermore, in first lighting fixture 301, main body 110 of base unit 100 includes opening 170. Opening 170 is provided at a position corresponding to signal input / output unit 340. In other words, signal input / output unit 340 is located in opening 170. The position, shape and size of opening 170 are not particularly limited as long as a cable or the like can be inserted and removed from outside main body 110 with respect to signal input / output unit 340.

[0054] 3, a part of the signal input / output unit 340 is located outside the main body 110. In other words, when the base unit 100 and the light source unit 201 are engaged (assembled), a part of the signal input / output unit 340 is exposed from the opening 170. The entire signal input / output unit 340 may be located inside the main body 110. The signal input / output unit 340 may include at least one of a power input terminal and a power output terminal instead of or in addition to the signal input / output terminal. In this case, the signal input / output unit 340 also serves as at least one of the terminal block 150T and the power output unit 311.

[0055] By providing the signal input / output unit 340 so that cables and the like can be inserted and removed from outside the main body 110, when the first lighting fixture 301 or the second lighting fixture 302 is attached to the area R (FIG. 1) of the system ceiling 500 and the ceiling board P is fitted, it becomes easy to insert and remove cables and the like from the signal input / output unit 340 after the first lighting fixture 301 or the second lighting fixture 302 is attached. In addition, in the area R, the area other than the first lighting fixture 301 or the second lighting fixture 302 is covered by the ceiling board P and cannot be seen from the light source unit side. Therefore, even if the signal input / output unit 340 or a cable connected to the signal input / output unit 340 is exposed from the opening 170, it cannot be seen from the light source unit side.

[0056] Note that the lighting system 300 may include one first lighting device 301 and two or more second lighting devices 302. In other words, in the lighting system 300, a plurality of second lighting devices 302 may be connected to one first lighting device 301.

[0057] Next, a typical example of a lighting system 300 in which a plurality of second lighting devices 302 are connected to one first lighting device 301 will be described with reference to Figures 5 to 8. Figures 5 to 8 are schematic plan views showing examples of connections of a plurality of second lighting devices 302 in the lighting system 300.

[0058] FIG. 5 shows an example of a lighting system 300 in which a first lighting fixture 301 is connected to a second lighting fixture 302a and a second lighting fixture 302b in series.

[0059] As shown in FIG. 5, the first luminaire 301, the second luminaire 302a, and the second luminaire 302b are attached to the system ceiling 500 so as to be aligned in a straight line along the X-axis direction.

[0060] In this case, the second lighting fixture 302a further includes a power output unit 321 that outputs a DC voltage supplied via the power input unit 322 to the second lighting fixture 302b other than the first lighting fixture 301 and the second lighting fixture 302a. The power output unit 321 is, for example, the same connector or terminal block as the power output unit 311. The power output unit 321 is attached to a support member 400 provided on the frame member 220. The arrangement of the power output unit 321 is not particularly limited. The power output unit 321 is connected to the power input unit 322 and the light source unit 212 via an internal power line (not shown). The power output unit 321 in the second lighting fixture 302a is connected to the power input unit 322 in the second lighting fixture 302b by the harness 303. The power input unit 322 is an example of a "second output unit." Providing the power input unit 322 in the second lighting device 302a makes it possible to connect a plurality of second lighting devices 302 in series to one first lighting device 301. This increases the variety of arrangements of the first lighting device 301, the second lighting device 302a, and the second lighting device 302b in the lighting system 300. Note that the second lighting device 302b may be provided with the power input unit 322 and further connected to another second lighting device 302.

[0061] FIG. 6 shows an example of a lighting system 300 in which a first lighting device 301 is connected to a second lighting device 302a and a second lighting device 302b in parallel.

[0062] The lighting system 300 shown in FIG. 6 is the same as the lighting system 300 shown in FIG. 5 except that the first lighting fixture 301, the second lighting fixture 302a, and the second lighting fixture 302b are connected in a different order. Specifically, the positions of the first lighting fixture 301 and the second lighting fixture 302a are swapped compared to the lighting system 300 shown in FIG. 5. That is, the second lighting fixture 302a, the first lighting fixture 301, and the second lighting fixture 302b are attached to the system ceiling 500 so as to be aligned in a straight line in the X-axis direction. In this case, the second lighting fixture 302b may receive power from the first lighting fixture 301 via the second lighting fixture 302a, as in the lighting system 300 shown in FIG. 5, or may receive power from the first lighting fixture 301 without the second lighting fixture 302a. That is, the second lighting fixture 302a and the second lighting fixture 302b may be connected in parallel to the first lighting fixture 301. In this case, the first lighting fixture 301 and the second lighting fixture 302a, and the first lighting fixture 301 and the second lighting fixture 302b are connected to each other by a harness including the first connector 303a and two second connectors 303b.

[0063] Fig. 7 shows another example in which the second lighting fixture 302a and the second lighting fixture 302b are connected in series to one first lighting fixture 301. Fig. 8 shows another example in which the second lighting fixture 302a and the second lighting fixture 302b are connected in parallel to one first lighting fixture 301. The lighting system 300 shown in Fig. 7 is the same as the lighting system 300 shown in Fig. 5 except that the first lighting fixture 301, the second lighting fixture 302a, and the second lighting fixture 302b are arranged differently. The lighting system 300 shown in Fig. 8 is the same as the lighting system 300 shown in Fig. 6 except that the first lighting fixture 301, the second lighting fixture 302a, and the second lighting fixture 302b are arranged differently.

[0064] 7 and 8, the first lighting fixture 301, the second lighting fixture 302a, and the second lighting fixture 302b are arranged along the periphery of three sides of a single ceiling board P. Also, as shown in Fig. 7 and 8, in the lighting system 300, the arrangement and connection order of the first lighting fixture 301, the second lighting fixture 302a, and the second lighting fixture 302b are not particularly limited.

[0065] [Variation 1] Next, a lighting system 300A will be described as a first modified example of the lighting system 300 with reference to Figs. 9 and 10. Fig. 9 is a perspective view of the lighting system 300A according to an embodiment of the present invention. Fig. 10 is a perspective view of the lighting system 300A according to an embodiment of the present invention from another angle. Figs. 9 and 10 show a state in which the ceiling panel P has been removed for ease of understanding of the drawings.

[0066] The lighting system 300A is different from the lighting system 300 in the shapes of the first lighting fixture and the second lighting fixture. Specifically, the lighting system 300A includes a first lighting fixture 301A and a second lighting fixture 302A. Each of the first lighting fixture 301A and the second lighting fixture 302A is an example of a "lighting fixture."

[0067] The first lighting device 301A is different from the first lighting device 301 in that it includes a housing 100A that houses the light source unit 201, instead of the base unit 100. For example, the housing 100A has a substantially rectangular parallelepiped shape. Specifically, the housing 100A has a first surface 100a, a second surface 100b, a third surface 100c, a fourth surface 100d, and a fifth surface 100e. Each of the second surface 100b, the third surface 100c, the fourth surface 100d, and the fifth surface 100e is perpendicular to the first surface 100a. The second surface 100b and the fourth surface 100d face each other and extend along the longitudinal direction PD. On the other hand, the third surface 100c and the fifth surface 100e face each other and extend along a direction perpendicular to the longitudinal direction PD. In this embodiment, an opening 100f is formed by the second surface 100b, the third surface 100c, the fourth surface 100d, and the fifth surface 100e.

[0068] The light source unit 201 is disposed in the housing 100A so as to face the first surface 100a. In detail, the light source unit 201 is inserted into the opening 100f with the cover member 230 facing the outside of the housing 100A. As a result, the power supply module 150M and the power output unit 311 disposed in the light source unit 201 are housed in the housing 100A.

[0069] Furthermore, the housing 100A has a first mounting portion 120 and two second mounting portions 130a, 130b. The first mounting portion 120 is attached to the second surface 100b. In the housing 100A, the first mounting portion 120 is fixed to the main body portion 110 on the first surface 100a side, and the opening 100f side is separated from the main body portion 110. As a result, the housing 100A is attached to the second ceiling support bar 520 with the opening 100f side facing the -Z direction.

[0070] Moreover, first mounting portion 120 is provided on one side (+X direction side) or the other side (-X direction side) of the center in longitudinal direction PD (X-axis direction). Therefore, even when two first lighting fixtures 301 are attached to the same first ceiling support bar 510 or second ceiling support bar 520 with their second surfaces 100b facing each other, for example, it is possible to prevent first mounting portions 120 from interfering with each other.

[0071] On the other hand, compared to the second lighting fixture 302, the second lighting fixture 302A includes a housing 100A of the first lighting fixture 301A instead of the base unit 100. In the second lighting fixture 302A, the housing 100A accommodates a light source unit 202 instead of the light source unit 201. That is, the power input unit 322 arranged in the light source unit 202 is accommodated in the housing 100A.

[0072] As shown in Fig. 10, in the lighting system 300A, the power output unit 311 of the first lighting fixture 301A and the power input unit 322 of the second lighting fixture 302A are connected to each other by a harness 303. Specifically, a part of the cable 303c including the first connector 303a of the harness 303 is located inside the housing 100A of the first lighting fixture 301A. Meanwhile, another part of the cable 303c including the second connector 303b is located inside the housing 100A of the second lighting fixture 302A. The remaining part of the cable 303c passes through a through hole provided in each of the housings 100A of the first lighting fixture 301A and the second lighting fixture 302A, and is exposed to the outside of the housing 100A.

[0073] As an example, first lighting device 301A and second lighting device 302A have an operation unit 180 to which a switching operation for switching various settings is input. For example, operation unit 180 is disposed in light source unit 201 and light source unit 202. Housing 100A is provided with an opening 190 corresponding to the position of operation unit 180. As a result, operation unit 180 is exposed from opening 190. This makes it easy to input a switching operation to the operation unit from outside housing 100A. The positions of operation unit 180 and opening 190 are not particularly limited.

[0074] [Variation 2] Next, a lighting system 300B will be described as a second modified example of the lighting system 300 with reference to Fig. 11. Fig. 11 is a perspective view of the lighting system 300B according to an embodiment of the present invention. Fig. 11 shows a state in which the ceiling panel P has been removed in order to make the drawing easier to understand.

[0075] The lighting system 300B is different from the lighting system 300 in the shapes of the first lighting fixture and the second lighting fixture. Specifically, the lighting system 300A includes a first lighting fixture 301B and a second lighting fixture 302B. Each of the first lighting fixture 301B and the second lighting fixture 302B is an example of a "lighting fixture."

[0076] The first lighting fixture 301B includes a housing 100B that houses the light source unit 201 instead of the base unit 100, as compared with the first lighting fixture 301. For example, the housing 100B has the same shape as the housing 100A in the lighting system 300A. Specifically, the housing 100B has a first surface 100g, a second surface 100h, a third surface 100j, a fourth surface 100k, and a fifth surface 100m. Each of the second surface 100h, the third surface 100j, the fourth surface 100k, and the fifth surface 100m is perpendicular to the first surface 100g. The second surface 100h and the fourth surface 100k face each other and extend along the longitudinal direction PD. On the other hand, the third surface 100j and the fifth surface 100m face each other and extend along a direction perpendicular to the longitudinal direction PD. In this embodiment, the second surface 100h, the third surface 100j, the fourth surface 100k, and the fifth surface 100m form an opening 100n. That is, the first surface 100g of the housing 100B corresponds to the first surface 100a of the housing 100B. Similarly, the second surface 100h corresponds to the second surface 100b. The third surface 100j corresponds to the third surface 100c. The fourth surface 100k corresponds to the fourth surface 100d. The fifth surface 100m corresponds to the fifth surface 100e. The opening 100n corresponds to the opening 100f.

[0077] The light source unit 201 is disposed in the housing 100B so as to face the first surface 100g. In detail, the light source unit 201 is inserted into the opening 100n with the cover member 230 facing the outside of the housing 100A. As a result, the power supply module 150M and the power output unit 311 disposed in the light source unit 201 are housed in the housing 100B.

[0078] Furthermore, the housing 100A has a first mounting portion 120 and two second mounting portions 130a, 130b. The first mounting portion 120 is attached to the fourth surface 100k. In the housing 100B, the opening 100n side of the first mounting portion 120 is fixed to the main body 110, and the first surface 100g side is separated from the main body 110. As a result, the housing 100A is attached to the second ceiling support bar 520 with the first surface 100g side facing the -Z direction.

[0079] That is, housing 100A in lighting system 300A and housing 100B in lighting system 300B are attached in opposite directions to second ceiling support bar 520. In other words, when the arrangement surface of first mounting part 120 and the Z-axis direction of first mounting part 120 are reversed, housings 100A and 100B are swapped with each other. For example, by inputting a switching operation to operation unit 180 depending on the attachment direction of housing 100A to second ceiling support bar 520, it is possible to easily switch to a setting suitable for first lighting fixture 301A or first lighting fixture 301B.

[0080] In this embodiment, the power supply section 150 (power supply module 150M) in the light source unit 201 includes a power supply board 150P. The power supply board 150P is disposed perpendicular to the light emitting surface of the light emitting element. In other words, the power supply board 150P extends along the Z-axis direction. By disposing the power supply board 150P perpendicular to the light emitting surface of the light emitting element, the length of the power supply section 150 (power supply module 150M) in the Y-axis direction can be reduced.

[0081] On the other hand, compared to the second lighting fixture 302, the second lighting fixture 302B includes a housing 100B in place of the base unit 100. In the second lighting fixture 302B, the housing 100B accommodates the light source unit 202 in place of the light source unit 201. That is, the power input unit 322 arranged in the light source unit 202 is accommodated in the housing 100B.

[0082] In this embodiment, the third surface 100j and the fifth surface 100m of the housing 100B may have a through hole 100H. The shape and size of the through hole 100H are not particularly limited. By providing the through hole 100H in the third surface 100j and the fifth surface 100m, it becomes possible to pass the harness 303 through the through hole 100H and lay the harness 303 inside the housing 100B, and the harness 303 becomes difficult to see from the outside. For example, the through hole 100H is provided on the third surface 100j and the fifth surface 100m on the -Z direction side of the light source unit 201 or the light source unit 202. This makes it possible to touch the light source unit 201 or the light source unit 202 accommodated in the housing 100B from the outside of the housing 100B, and makes it possible to easily remove the light source unit 201 or the light source unit 202 from the housing 100B.

[0083] [Variation 3] Next, a lighting system 300C will be described as a third modified example of the lighting system 300 with reference to Fig. 12. Fig. 11 is a schematic plan view showing the lighting system 300C according to an embodiment of the present invention and a system ceiling 500. Fig. 12 shows the lighting system 300C when viewed from inside a room. Fig. 12 shows by hatching a state in which a ceiling panel P is fitted into the system ceiling 500.

[0084] The lighting system 300C includes a return structure 600 in addition to the first lighting fixture 301 and the second lighting fixture 302 of the lighting system 300. The return structure 600 is installed to ensure ventilation of the system ceiling 500, for example, to improve heat dissipation.

[0085] The first luminaire 301 and the second luminaire 302 in the lighting system 300C are the same as those in the lighting system 300 except for their arrangement on the system ceiling 500, and therefore a description thereof will be omitted.

[0086] In this embodiment, the return structure 600 is disposed between the first lighting fixture 301 and the second lighting fixture 302. The return structure 600 is installed on the first ceiling support bar 510 and the second ceiling support bar 520 in the system ceiling 500. The arrangement of the return structure 600 in the system ceiling 500 is not limited to between the first lighting fixture 301 and the second lighting fixture 302, and is not particularly limited as long as it is a position where the return structure 600 can be attached to the first ceiling support bar 510 or the second ceiling support bar 520.

[0087] Next, the return structure 600 will be described with reference to Fig. 13. Fig. 13 is a perspective view of the return structure 600 according to an embodiment of the present invention. Fig. 13 shows a state in which the ceiling board P has been removed in order to make the drawing easier to understand.

[0088] The return structure 600 has a first surface 601a, a second surface 601b, a third surface 601c, and a fourth surface 601d. The first surface 601a and the third surface 601c face each other and extend along the longitudinal direction PD. On the other hand, the second surface 601b and the fourth surface 601d face each other and extend along a direction perpendicular to the longitudinal direction PD. The main body 601 also has a fifth surface 601r. The fifth surface 601r is disposed perpendicular to the first surface 601a, the second surface 601b, the third surface 601c, and the fourth surface 601d.

[0089] In the return structure 600, the first surface 601a, the third surface 601c, a part of the second surface 601b, a part of the fourth surface 601d, and a part of the fifth surface 601r constitute a main body portion 601. Meanwhile, a part of the second surface 601b other than the main body portion 601, a part of the fourth surface 601d other than the main body portion, and a part of the fifth surface 601r other than the main body portion constitute an eave portion 602. In other words, the return structure 600 has a main body portion 601 attached to the first ceiling support bar 510 or the second ceiling support bar 520, and an eave portion 602 extending from the main body portion 601.

[0090] The main body 601 is substantially elongated. The main body 601 extends along the longitudinal direction PD (X-axis direction). The main body 601 includes a first opening 603a that opens facing the fifth surface 601r, and a second opening 603b that is connected to the first opening 603a and opens in a direction perpendicular to the first opening 603a. In this embodiment, the second opening 603b opens facing the first surface 601a. ​​In this way, the return structure 600 including the first opening 603a and the second opening 603b that are connected to each other is disposed in the system ceiling 500, thereby ensuring a ventilation path in the system ceiling 500.

[0091] 12, the width of the first opening 603a in the orthogonal direction QD (Y axis direction) is the same as the width of the first luminaire 301 in the orthogonal direction QD (Y axis direction) and the width of the second luminaire 302 in the orthogonal direction QD (Y axis direction). In other words, the distance between the first surface 601a and the third surface 601c of the main body 601 is the same as the width of the first luminaire 301 in the orthogonal direction QD (Y axis direction) and the width of the second luminaire 302 in the orthogonal direction QD (Y axis direction).

[0092] This creates a sense of unity in appearance in the lighting system 300C, as if the first lighting fixture 301, the second lighting fixture 302, and the return structure 600 were arranged in a straight line, for example.

[0093] Furthermore, as shown in FIG. 13, in the return structure 600, if the length L1 of the fifth surface 601r in the perpendicular direction QD (Y-axis direction) is made longer than the length L2 from the first opening 603a to the fifth surface 601r, the space on the +Z direction side of the ceiling support bar becomes difficult to see from the living room side.

[0094] Further, each of the second surface 601b and the fourth surface 601d has a through hole 601H. The through hole 601H of the second surface 601b and the through hole 601H of the fourth surface 601d are arranged opposite to each other. For example, a cable 303c is passed through the through hole 601H. That is, the cable 303c is laid in the eaves portion 602. As a result, the laid cable 303c is difficult to see from the living room side.

[0095] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the gist of the present invention. In addition, the components disclosed in the above embodiments can be modified as appropriate. For example, a certain component among all the components shown in one embodiment may be added to a component of another embodiment, or some components among all the components shown in one embodiment may be deleted from the embodiment.

[0096] In addition, the drawings are mainly schematic illustrations of each component to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. In addition, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention. [Industrial Applicability]

[0097] The present invention can be used in the field of lighting fixtures. [Explanation of symbols]

[0098] 100: Base unit 150: Power supply section 201: Light source unit 202: Light source unit 211: Light source section 212: Light source section 220: Frame members 230: Cover member 300, 300A, 300B, 300C: Lighting systems 301, 301A, 301B: 1st lighting fixture 302, 302A, 302B, 302a, 302b: 2nd lighting fixture 311: Power output section 321: Power output section 322: Power input section 340: Signal input / output section 510: First ceiling support bar 520: Second ceiling support bar PD: Longitudinal direction

Claims

1. A lighting fixture installed on a mounting body, A first light source unit that emits light; a power supply unit that generates a second power based on a first power, the second power being used to cause the first light source unit to emit the light, and supplies the second power to the first light source unit; a first output unit that outputs the second power supplied from the power supply unit to another lighting device; A lighting fixture comprising:

2. a first light source unit extending in a first direction and including a frame member in which the first light source unit is disposed and a cover member that covers the first light source unit; a base unit that is detachably attached to the first light source unit and that installs the first light source unit on the mounting body; Further comprising: The lighting device according to claim 1 , wherein the power supply section and the first output section are disposed in the first light source unit.

3. A lighting fixture installed on a mounting body, A connection portion electrically connected to another lighting fixture; A second light source unit that emits light; Equipped with The second light source unit is supplied with power via the connection unit from the other lighting device, causing the second light source unit to emit the light.

4. a second light source unit extending in a first direction and including a frame member in which the second light source unit is disposed and a cover member that covers the second light source unit; a base unit that is detachably attached to the second light source unit and that installs the second light source unit on the mounting body; Further comprising: The lighting device according to claim 3 , wherein the connection portion is disposed on the second light source unit.

5. The lighting fixture according to claim 4 , wherein the second light source unit further comprises a second output portion that outputs the power supplied via the connection portion to a lighting fixture other than the other lighting fixture.

6. The lighting fixture according to any one of claims 1 to 5, wherein the mounting body is a T-bar that constitutes a system ceiling.

7. A first lighting fixture installed on the mounting body; a second lighting fixture installed on the mounting body, The first lighting fixture is A first light source unit that emits light; a power supply unit that generates a second power for causing the first light source unit to emit the light based on a first power supplied to the first lighting device, and supplies the second power to the first light source unit; an output unit that outputs the second power supplied from the power supply unit to the second lighting device; having The second lighting device is a connection portion electrically connected to the output portion and receiving the second power; a second light source unit that receives the second power via the connection unit and emits light; A lighting system comprising:

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