lighting fixtures

Abstract

To provide a support device capable of suppressing the possibility that positional deviation occurs in the direction perpendicular to the longitudinal direction.SOLUTION: A support device 100 is mounted to ceiling support bars 510, 520. The support device 100 supports a mounting object 200. The support device 100 includes a body part 110, and a first mounting part 120, the body part 110 extending in a longitudinal direction PD, the first mounting part 120 being provided on the body part 110, the first mounting part 120 serving for mounting the body part 110 to the ceiling support bar 520, the first mounting part 120 protruding from the body part 110 in a perpendicular direction QD, the perpendicular direction QD being perpendicular to the longitudinal direction PD.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] The lighting fixture described in Patent Document 1 is attached to a T-bar (the ceiling frame of a system ceiling) of a system ceiling. The lighting fixture described in Patent Document 1 can be attached without the metal fittings of adjacent lighting fixtures interfering with each other. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-135179 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the lighting fixture described in Patent Document 1, although the longitudinal ends of the lighting fixture are fixed to the T-bar, the ends perpendicular to the longitudinal direction are not fixed to the T-bar. Therefore, the lighting fixture described in Patent Document 1 may become misaligned in the direction perpendicular to the longitudinal direction.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a support device and a lighting fixture that can reduce the possibility of positional deviation in a direction perpendicular to the longitudinal direction. [Means for solving the problem]

[0006] The lighting fixture disclosed in the present application comprises a light source unit and a support device attached to a ceiling support bar and supporting the light source unit located below, the support device having a main body extending in the longitudinal direction, and a first mounting portion provided on the main body for attaching the main body to the ceiling support bar, the first mounting portion protruding from the main body in a direction perpendicular to the longitudinal direction, the light source unit having a light-emitting portion that emits light, and a cover member extending along the longitudinal direction and covering the light-emitting portion, the lower end of the main body attached to the ceiling support bar by the first mounting portion being higher than the lower end of the ceiling support bar in terms of vertical position, and the cover member being positioned to protrude lower than the lower end of the ceiling support bar, and the light emitted by the light-emitting portion being configured to be emitted to the outside through the cover member. [Effects of the Invention]

[0007] The support device according to the present invention can reduce the possibility of misalignment in a direction perpendicular to the longitudinal direction. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic plan view showing a lighting fixture and a system ceiling according to an embodiment of the present invention. [Figure 2] 1 is a perspective view of a lighting fixture according to an embodiment of the present invention. [Figure 3] 1 is an exploded perspective view of a lighting fixture according to an embodiment of the present invention. [Figure 4] 1 is a perspective view showing a lighting fixture according to an embodiment of the present invention. [Figure 5] 5(a) is an enlarged view of the vicinity of the first mounting portion in Fig. 4. (b) is a cross-sectional view taken along line VB-VB in Fig. 5(a). [Figure 6] 6(a) is an enlarged view of the vicinity of the second mounting portion in Fig. 4. Fig. 6(b) is a cross-sectional view taken along line VIB-VIB in Fig. 6(a). [Figure 7]7(a) is a top view of the lighting fixture according to the embodiment of the present invention, and FIG. 7(b) is a cross-sectional view taken along line VIIB-VIIB in FIG. [Figure 8] 1 is a side view of a lighting fixture according to an embodiment of the present invention. [Figure 9] 1A is a perspective view of a first mounting portion according to an embodiment of the present invention, and FIG. 1B is a side view of the first mounting portion according to an embodiment of the present invention. [Figure 10] 1A is a perspective view of a second mounting portion according to an embodiment of the present invention, and FIG. 1B is a side view of the second mounting portion according to an embodiment of the present invention. [Figure 11] 1 is a schematic plan view showing a plurality of lighting fixtures and a system ceiling according to an embodiment of the present invention. [Figure 12] 1A is a top view of the vicinity of a connecting portion between lighting fixtures, and FIG. 1B is a cross-sectional view of the vicinity of the connecting portion between lighting fixtures. [Figure 13] 1 is a schematic plan view showing a plurality of lighting fixtures and a system ceiling according to an embodiment of the present invention. [Figure 14] FIG. 10 is a schematic side view of the vicinity of a connecting portion between lighting fixtures. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. In addition, for ease of understanding, the X-axis, Y-axis, and Z-axis of a three-dimensional Cartesian coordinate system are appropriately indicated in the drawings. 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.

[0010] A lighting fixture 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 fixture 300 according to an embodiment of the present invention and a system ceiling 500. Fig. 1 shows the system ceiling 500 as viewed from inside a room.

[0011] As shown in FIG. 1, a system ceiling 500 is placed in the upper space of a room. The system ceiling 500 is fixed to, for example, the tip or vicinity of a rod-shaped fixing member (such as a suspension 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 510 and a plurality of second ceiling support 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 grid 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, a ceiling surface that covers the upper space of a room can be formed by fitting a square ceiling board of approximately the same size into square area R formed by first ceiling support bar 510 and second ceiling support bar 520. The first ceiling support bar 510 and second ceiling support bar 520 correspond to an example of a "ceiling support bar."

[0012] The lighting fixture 300 is attached to a system ceiling 500. More specifically, the lighting fixture 300 is attached to a first ceiling support bar 510 and a second ceiling support bar 520. As a result, the lighting fixture 300 is attached to the ceiling surface. Note that the area R in the system ceiling 500 where the lighting fixture 300 is attached has a rectangular opening. Therefore, the ceiling board that can be fitted into the area R where the lighting fixture 300 is attached is rectangular.

[0013] A lighting fixture 300 according to an embodiment of the present invention will be described with reference to Figures 1 and 2. Figure 2 is a perspective view of lighting fixture 300 according to an embodiment of the present invention.

[0014] As shown in FIG. 2, the lighting fixture 300 emits light. The lighting fixture 300 extends along a longitudinal direction PD. In this embodiment, the longitudinal direction PD is substantially parallel to the X-axis and indicates the longitudinal direction of the lighting fixture 300. The lighting fixture 300 includes a base unit 100 and a light source unit 200. The base unit 100 corresponds to an example of a "support device." The light source unit 200 corresponds to an example of an "object to be attached."

[0015] The base unit 100 extends along the longitudinal direction PD. The base unit 100 supports the light source unit 200. The base unit 100 is attached to a ceiling support bar (a first ceiling support bar 510 or a 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.

[0016] The main body 110 has a substantially elongated shape. The main body 110 extends along the longitudinal direction PD. The main body 110 is made of, for example, metal (e.g., 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. A plurality of through-hole pairs 170 are formed on the upper surface of the main body 110. The plurality of through-hole pairs 170 include through-hole pair 170a, through-hole pair 170b, through-hole pair 170c, through-hole pair 170d, through-hole pair 170e, and through-hole pair 170f. Note that in FIG. 2, through-hole pair 170e is hidden by the first mounting portion 120 and is not visible.

[0017] The through-hole pair 170a is provided on the -X direction side of the center of the main body portion 110 in the longitudinal direction PD, and is provided on the +Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD. The through-hole pair 170b is provided in the center of the main body portion 110 in the longitudinal direction PD, and is provided on the +Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD. The through-hole pair 170c is provided on the +X direction side of the center of the main body portion 110 in the longitudinal direction PD, and is provided on the +Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD.

[0018] The through-hole pair 170d is provided on the -X direction side of the center of the main body portion 110 in the longitudinal direction PD, and is provided on the -Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD. The through-hole pair 170e is provided in the center of the main body portion 110 in the longitudinal direction PD, and is provided on the -Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD. The through-hole pair 170f is provided on the +X direction side of the center of the main body portion 110 in the longitudinal direction PD, and is provided on the -Y direction side of the center of the main body portion 110 in the orthogonal direction QD perpendicular to the longitudinal direction PD.

[0019] Each of the plurality of through hole pairs 170 has a through hole 171 and a through hole 172. Each of the through holes 171 and 172 is a hole for fixing the first mounting portion 120 with a screw B. The interval (pitch) between the through holes 171 and 172 in each of the through hole pairs 170a to 170f is the same.

[0020] The first mounting portion 120 is made of, for example, metal (e.g., aluminum). The first mounting portion 120 preferably has high rigidity. That is, the first mounting portion 120 preferably does not have spring properties. However, the first mounting portion 120 may have spring properties. The first mounting portion 120 is provided on the main body portion 110. In this embodiment, the first mounting portion 120 is provided at approximately the center of the main body portion 110 in the longitudinal direction PD. More specifically, the first mounting portion 120 is fixed to the pair of through holes 170e with screws B. The first mounting portion 120 mounts the main body portion 110 to the ceiling support bar (the first ceiling support bar 510 or the second ceiling support bar 520). The first mounting portion 120 protrudes from the main body portion 110 in an orthogonal direction QD that is orthogonal to the longitudinal direction PD. Here, the first mounting portion 120 protrudes from the main body portion 110 in the -Y side direction. The length of the first attachment portion 120 is shorter than the length of the main body portion 110 in the longitudinal direction PD.

[0021] Each of the two second mounting portions 130 is made of, for example, metal (e.g., aluminum). Each of the two second mounting portions 130 has spring properties. The two second mounting portions 130 include a second mounting portion 130a and a second mounting portion 130b. Each of the two second mounting portions 130 is provided on the main body portion 110. Specifically, the second mounting portion 130a is provided on the end of the main body portion 110 on the -X direction side. The second mounting portion 130b is provided on the end of the main body portion 110 on the +X direction side. Each of the two second mounting portions 130 mounts the main body portion 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 portions 130 protrudes from the main body portion 110 in the longitudinal direction PD. Here, second attachment portion 130a protrudes from main body portion 110 in the -X direction, and second attachment portion 130b protrudes from main body portion 110 in the +X direction.

[0022] The light source unit 200 is supported by the base unit 100 .

[0023] The lighting fixture 300 according to the embodiment of the present invention will be further described with reference to FIG. 3. FIG. 3 is an exploded perspective view of the lighting fixture 300 according to the embodiment of the present invention. Note that in FIG. 2, the first mounting portion 120 is attached to the pair of through holes 170e. That is, in FIG. 2, the first mounting portion 120 is attached so as to protrude in the -Y direction. On the other hand, in FIG. 3, the first mounting portion 120 is attached to the pair of through holes 170b. That is, in FIG. 3, the first mounting portion 120 is attached so as to protrude in the +Y direction. In this way, it is preferable that the attachment position of the first mounting portion 120 to the main body portion 110 is changeable. Note that in FIG. 3, the pair of through holes 170b is hidden by the first mounting portion 120 and is not visible.

[0024] 3, a plurality of engagement holes 112 are formed in the main body 110 of the base unit 100. The engagement holes 112 are formed at the ends of the main body 110 in the longitudinal direction PD. Engagement members 240 are engaged with the engagement holes 112.

[0025] The light source unit 200 has two engagement members 240. The two engagement members 240 are attached to the ends of the light source unit 200 in the longitudinal direction PD with a gap between them. The two engagement members 240 are located at the same position in the longitudinal direction PD as the corresponding engagement holes 112.

[0026] The light source unit 200 is attached to the base unit 100 by two engaging members 240. The two engaging members 240 are located on the +Z direction side of the light source unit 200. For example, each of the engaging members 240 has elasticity and is made of metal (e.g., stainless steel). When the two engaging members 240 are fitted into the corresponding engaging holes 112, the elasticity of the two engaging members 240 causes the light source unit 200 to be attached to the base unit 100.

[0027] The base unit 100 has a main body 110, a first mounting portion 120, two second mounting portions 130, and further has a flange 140. The flange 140 is provided on the main body 110. In the longitudinal direction PD, the length of the flange 140 is approximately the same as that of the main body 110.

[0028] The first attachment portion 120 protrudes from the main body portion 110 in a first direction D1. The flange portion 140 protrudes from the main body portion 110 in a second direction D2. The first direction D1 is aligned with the orthogonal direction QD. The second direction D2 is aligned with the orthogonal direction QD and is opposite to the first direction D1.

[0029] The first ceiling support bar 510 has a hanging portion 512, a support portion 514, and a connecting portion 516. The hanging portion 512 is formed in a rectangular parallelepiped shape. The support portion 514 is formed in a rectangular parallelepiped shape. The width (length along the X-axis direction) of the support portion 514 is longer than the width (length along the X-axis direction) of the hanging portion 512. The connecting portion 516 connects the hanging portion 512 and the support portion 514. The connecting portion 516 is in the shape of a thin plate.

[0030] Similarly, second ceiling support bar 520 has a hanging portion 522, a support portion 524, and a connecting portion 526. Hanging portion 522 is formed in a rectangular parallelepiped shape. Support portion 524 is also formed in a rectangular parallelepiped shape. The width (length along the Y-axis direction) of support portion 524 is longer than the width (length along the Y-axis direction) of hanging portion 522. Connecting portion 526 connects hanging portion 522 and support portion 524. Connecting portion 526 is thin plate-shaped.

[0031] The base unit 100 is attached to a ceiling support bar (first ceiling support bar 510 or second ceiling support bar 520) by the first attachment portion 120, the second attachment portion 130a, and the second attachment portion 130b. More specifically, the first attachment portion 120 is attached to the hanging portion 522 of the second ceiling support bar 520. The second attachment portion 130a is attached to the hanging portion 512 of the first ceiling support bar 510 located on the -X direction side. The second attachment portion 130b is attached to the hanging portion 512 of the first ceiling support bar 510 located on the +X direction side. Thus, the base unit 100 is attached to the ceiling support bar. As a result, the lighting fixture 300 is attached to the ceiling support bar. That is, the lighting fixture 300 is attached to the ceiling surface.

[0032] 4 to 6(b), the attachment of the lighting fixture 300 to ceiling support bars (first ceiling support bar 510 and second ceiling support bar 520) according to an embodiment of the present invention will be further described. FIG. 4 is a perspective view showing the lighting fixture 300 according to an embodiment of the present invention. FIG. 5(a) is an enlarged view of the vicinity of the first mounting portion 120 in FIG. 4. FIG. 5(b) is a cross-sectional view taken along line VB-VB in FIG. 5(a). FIG. 6(a) is an enlarged view of the vicinity of the second mounting portion 130a in FIG. 4. FIG. 6(b) is a cross-sectional view taken along line VIB-VIB in FIG. 6(a). Note that in FIGS. 4 to 6(b), the first mounting portion 120 is attached so as to protrude in the -Y direction.

[0033] In this specification, of the two first ceiling support bars 510, the first ceiling support bar 510 on the -X side may be referred to as first ceiling support bar 510a, and the first ceiling support bar 510 on the +X side may be referred to as first ceiling support bar 510b. Also, in this specification, of the two second ceiling support bars 520, the second ceiling support bar 520 on the +Y side may be referred to as second ceiling support bar 520a, and the second ceiling support bar 520 on the -Y side may be referred to as second ceiling support bar 520b.

[0034] As shown in FIG. 4, lighting fixture 300 is attached to the ceiling support bars (first ceiling support bar 510 and second ceiling support bar 520) by first mounting portion 120, second mounting portion 130a, and second mounting portion 130a. More specifically, base unit 100 is attached to the ceiling support bars (first ceiling support bar 510 and second ceiling support bar 520) by first mounting portion 120, second mounting portion 130a, and second mounting portion 130a. More specifically, main body 110 of base unit 100 is attached to second ceiling support bar 520b by mounting first mounting portion 120 to hook portion 522 of second ceiling support bar 520b. Furthermore, main body 110 of base unit 100 is attached to first ceiling support bar 510a by mounting second mounting portion 130a to hook portion 512 of first ceiling support bar 510a. Furthermore, the main body 110 of the base unit 100 is attached to the first ceiling support bar 510b by attaching the second attachment portion 130b to the hanging portion 512 of the first ceiling support bar 510b.

[0035] As shown in Figures 5(a) and 5(b), the first mounting portion 120 is attached to the second ceiling support bar 520. More specifically, the first mounting portion 120 is attached to the hanging portion 522 of the second ceiling support bar 520. The first mounting portion 120 is in contact with the hanging portion 522. Therefore, the base unit 100 can be prevented from moving in the orthogonal direction QD.

[0036] As shown in Figures 6(a) and 6(b), second mounting portion 130a is attached to first ceiling support bar 510. More specifically, second mounting portion 130a is attached to hanging portion 512 of first ceiling support bar 510. First mounting portion 120 is in contact with hanging portion 512. Furthermore, light source unit 200 is in contact with branch portion 514 of first ceiling support bar 510.

[0037] It is preferable that the attachment position of first attachment portion 120 to main body portion 110 is changeable. For example, as shown in Fig. 3, first attachment portion 120 can be attached to pair of through-holes 170b so that first attachment portion 120 protrudes in the +Y direction. In this case, lighting device 300 can be attached to first ceiling support bar 510a, second ceiling support bar 520a, and first ceiling support bar 510b.

[0038]

[0044] The lighting device 300 according to the embodiment of the present invention will be further described with reference to Figures 7(a) and 7(b). Figure 7(a) is a top view of the lighting device 300 according to the embodiment of the present invention. Figure 7(b) is a cross-sectional view taken along line VIIB-VIIB in Figure 7(a).

[0039] As shown in FIG. 7(a), second mounting portion 130a is provided on the +Y side of the center of main body portion 110 in orthogonal direction QD. On the other hand, second mounting portion 130b is provided on the −Y side of the center of main body portion 110 in orthogonal direction QD. Therefore, when lighting fixture 300 is attached to first ceiling support bar 510 adjacent to each other in longitudinal direction PD, interference between second mounting portion 130a and second mounting portion 130b can be suppressed. As a result, lighting fixture 300 can be attached to first ceiling support bar 510 adjacent to each other in longitudinal direction PD. A detailed configuration will be described later with reference to FIGS. 12(a) and 12(b).

[0040] As shown in FIG. 7(b), the base unit 100 has a main body 110, a first mounting portion 120, two second mounting portions 130, a flange portion 140, as well as a power supply portion 150 and a terminal block 160.

[0041] The power supply unit 150 is housed inside the main body 110. The terminal block 160 is attached to the top surface of the main body 110. The power supply unit 150 is connected to the terminal block 160 via an internal power line (not shown). An AC voltage transmitted through an external power line (not shown) is passed through the internal power line via the terminal block 160. The internal power line transmits the AC voltage to the power supply unit 150.

[0042] The light source unit 200 includes a light emitting section 210 , a frame member 220 , and a cover member 230 .

[0043] The light-emitting unit 210 emits light. The light-emitting unit 210 is attached to the frame member 220. The light-emitting unit 210 extends along the longitudinal direction PD and emits light. The light-emitting unit 210 is, for example, an LED (Light Emitting Diode) module. Specifically, the light-emitting unit 210 includes a plurality of light-emitting elements 212. The plurality of light-emitting elements 212 are, for example, arranged in a straight line. Each of the light-emitting elements 212 emits light and is, for example, an LED. The light-emitting surfaces of the plurality of light-emitting elements 212 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 lighting device 300 through the cover member 230. Note that the light-emitting unit 210 may include a single light-emitting element 212.

[0044] Frame member 220 is a plate-like member having a rectangular shape that is long in the longitudinal direction PD. Light-emitting unit 210 is attached to frame member 220. More specifically, light-emitting unit 210 is attached to the lower surface of frame member 220 so that multiple light-emitting elements 212 face downward. Light-emitting unit 210 may be adhered to frame member 220 by, for example, an adhesive, or may be fixed to frame member 220 by a fastening member such as a screw.

[0045] The frame member 220 may be a member made of metal such as aluminum. In this embodiment, the frame member 220 is made of 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.

[0046] The cover member 230 extends along the longitudinal direction PD. The cover member 230 covers the light emitting unit 210. 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 emitting unit 210. The cover member 230 may be, for example, white and translucent. The cover member 230 may be formed, for example, by molding a resin containing a light diffusing material, or may be formed by molding a transparent material and then performing a light diffusing treatment (including a fine unevenness forming treatment and a translucent white paint) on the surface. The cover member 230 has, for example, a generally U-shaped cross section.

[0047] In the longitudinal direction PD, the length d2 of the cover member 230 is longer than the length d1 of the main body 110 of the base unit 100. Therefore, when the light source unit 200 is attached to the base unit 100, the cover member 230 protrudes further in the longitudinal direction PD than the main body 110. As a result, when the lighting fixture 300 is attached to the ceiling support bars (first ceiling support bar 510 and second ceiling support bar 520), it is possible to prevent the base unit 100 from being exposed when viewed from below.

[0048] The lighting device 300 according to the embodiment of the present invention will be further described with reference to Fig. 8. Fig. 8 is a side view of the lighting device 300 according to the embodiment of the present invention.

[0049] As shown in FIG. 8 , in the orthogonal direction QD, the length d4 of the cover member 230 is longer than the length d3 of the main body 110 of the base unit 100. Therefore, when the light source unit 200 is attached to the base unit 100, the cover member 230 protrudes further in the orthogonal direction QD than the main body 110. Therefore, the second ceiling support bar 520 is sandwiched between the first mounting portion 120 and the cover member 230. As a result, the fixed position of the lighting fixture 300 to the second ceiling support bar 520 can be stabilized. For example, even if the ceiling surface shakes due to an earthquake or the like, the first mounting portion 120 can be prevented from coming off the second ceiling support bar 520. Furthermore, when the lighting fixture 300 is attached to the ceiling support bars (the first ceiling support bar 510 and the second ceiling support bar 520), the base unit 100 can be prevented from being exposed when viewed from below.

[0050] The first mounting portion 120 protrudes from the main body portion 110 in a first direction D1. The flange portion 140 protrudes from the main body portion 110 in a second direction D2. The first direction D1 is aligned with the orthogonal direction QD. The second direction D2 is aligned with the orthogonal direction QD and is the opposite direction to the first direction D1. In other words, the flange portion 140 protrudes in the opposite direction from the first mounting portion 120. Therefore, when the lighting fixture 300 is attached to the second ceiling support bar 520, the flange portion 140 protrudes on the side that is not adjacent to the second ceiling support bar 520. Therefore, the flange portion 140 can support the ceiling panel C.

[0051] The first mounting portion 120 according to the embodiment of the present invention will be further described with reference to Figures 9(a) and 9(b). Figure 9(a) is a perspective view of the first mounting portion 120 according to the embodiment of the present invention. Figure 9(b) is a side view of the first mounting portion 120 according to the embodiment of the present invention.

[0052] As shown in FIGS. 9(a) and 9(b), the first mounting portion 120 includes a plate-shaped member 121, a plate-shaped member 122, a plate-shaped member 123, a plate-shaped member 124, a plate-shaped member 125, and a plate-shaped member 126. The plate-shaped members 121, 122, 123, 124, 125, and 126 are, for example, substantially rectangular plate-shaped members. The plate-shaped members 121 to 126 are connected in the order of the plate-shaped member 121, the plate-shaped member 122, the plate-shaped member 123, the plate-shaped member 124, the plate-shaped member 125, and the plate-shaped member 126. The plate-shaped member 121 and the plate-shaped member 123 are parallel to the XY plane. The plate-shaped member 122 and the plate-shaped member 124 are parallel to the ZY plane. The plate-shaped member 125 is inclined toward the +X direction relative to the plate-shaped member 124. The plate-shaped member 126 is inclined toward the −X direction relative to the plate-shaped member 125.

[0053] Two through holes 127 are formed in plate-like member 121. A fastener can pass through each of the two through holes 127. The fastener is, for example, a screw. The distance (pitch) between the two through holes 127 is the same as the distance (pitch) between through holes 171 and 172 provided in main body 110 (see FIG. 2). First mounting portion 120 is fixed to main body 110 of base unit 100 by inserting fasteners into the two through holes 127 from above. Note that first mounting portion 120 is fixed to main body 110 before lighting fixture 300 is attached to the ceiling support bar.

[0054] A fastener hole 128 is formed in the first mounting portion 120. More specifically, the fastener hole 128 is formed in approximately the center of the plate-like member 124. A fastener can pass through the fastener hole 128. The fastener hole 128 penetrates in the orthogonal direction QD. Therefore, a fastener can be inserted into the fastener hole 128 from the orthogonal direction QD (horizontally). The fastener is, for example, a screw. By inserting a fastener into the fastener hole 128 from the side, the first mounting portion 120 can be fastened to a hole formed in the hanging portion 522 of the second ceiling support bar 520. This facilitates installation. More specifically, after the lighting fixture 300 with the first mounting portion 120 fixed thereto is attached to the ceiling support bar, the fastener is passed through the fastener hole 128 and fastened to the hanging portion 522. By configuring the fastener to be inserted from the side, the worker can easily see the fastener when fastening it, making it easier to engage the screwdriver with the fastener and making it easier to fasten the fastener.If the fastener were inserted from above, it would be difficult to see the fastener, making it difficult to fasten the fastener.

[0055] The second mounting portion 130 according to the embodiment of the present invention will be further described with reference to Figures 10(a) and 10(b). Figure 10(a) is a perspective view of the second mounting portion 130 according to the embodiment of the present invention. Figure 10(b) is a side view of the second mounting portion 130 according to the embodiment of the present invention.

[0056] As shown in FIGS. 10(a) and 10(b), the second mounting portion 130 has a plate-shaped member 131, a plate-shaped member 133, a plate-shaped member 134, a plate-shaped member 135, and a plate-shaped member 136. The plate-shaped member 131 is L-shaped. The plate-shaped member 133, the plate-shaped member 134, the plate-shaped member 135, and the plate-shaped member 136 are, for example, substantially rectangular plate-shaped members. The plate-shaped member 133 is connected to the plate-shaped member 131, and the plate-shaped members 131, 133, 134, 135, and 136 are connected in this order. The plate-shaped member 131 is parallel to the XZ plane. The plate-shaped member 133 is parallel to the XY plane. The plate-shaped member 134 is parallel to the XZ plane. The plate-shaped member 135 is inclined toward the +Y direction relative to the plate-shaped member 134. The plate-shaped member 136 is inclined toward the −Y direction relative to the plate-shaped member 135.

[0057] 1 to 10(b), in the base unit 100 (support device), the first attachment portion 120 protrudes from the main body portion 110 in the orthogonal direction QD that is orthogonal to the longitudinal direction PD. Therefore, it is possible to reduce the possibility of misalignment in the direction orthogonal to the longitudinal direction PD (orthogonal direction QD).

[0058] Furthermore, the attachment position of the first mounting portion 120 to the main body 110 is changeable. This allows the attachment position of the base unit 100 to the system ceiling 500 to be easily changed. For example, as shown in FIG. 3, by attaching the first mounting portion 120 to the pair of through-holes 170b, the first mounting portion 120 can be attached so as to protrude in the +Y direction. In this case, the lighting fixture 300 can be attached to the first ceiling support bar 510a, the second ceiling support bar 520a, and the first ceiling support bar 510b. Alternatively, as shown in FIG. 4, by attaching the first mounting portion 120 to the pair of through-holes 170e, the first mounting portion 120 can be attached so as to protrude in the -Y direction. In this case, the lighting fixture 300 can be attached to the first ceiling support bar 510a, the second ceiling support bar 520b, and the first ceiling support bar 510b.

[0059] Furthermore, in the longitudinal direction PD, the length d2 of the cover member 230 is longer than the length d1 of the main body 110 of the base unit 100 (support device). Therefore, when the light source unit 200 is attached to the base unit 100, the cover member 230 protrudes further in the longitudinal direction PD than the main body 110. As a result, when the lighting fixture 300 is attached to the ceiling support bars (first ceiling support bar 510 and second ceiling support bar 520), it is possible to prevent the base unit 100 from being exposed when viewed from below.

[0060] Furthermore, in the lighting fixture 300, the length d4 of the cover member 230 in the orthogonal direction QD is longer than the length d3 of the main body 110 of the base unit 100 (support device). Therefore, when the light source unit 200 is attached to the base unit 100, the cover member 230 protrudes further in the orthogonal direction QD than the main body 110. Therefore, the second ceiling support bar 520 is sandwiched between the first attachment portion 120 and the cover member 230. As a result, the fixed position of the lighting fixture 300 to the second ceiling support bar 520 can be stabilized.

[0061] Although one lighting fixture 300 is attached to the system ceiling 500 described with reference to Figures 1 to 10(b), multiple lighting fixtures 300 may be attached to the system ceiling 500.

[0062] A lighting fixture 300 according to an embodiment of the present invention will be described with reference to Fig. 11. Fig. 11 is a schematic plan view showing a plurality of lighting fixtures 300 according to an embodiment of the present invention and a system ceiling 500. Description of overlapping portions between the lighting fixtures 300 described with reference to Figs. 1 to 10(b) and the system ceiling 500 will be omitted.

[0063] 11 , a plurality of lighting fixtures 300 are attached to a system ceiling 500. The plurality of lighting fixtures 300 includes lighting fixture 300a, lighting fixture 300b, and lighting fixture 300c. In this embodiment, the plurality of lighting fixtures 300 are attached to the system ceiling 500 so as to be aligned linearly along the longitudinal direction PD.

[0064] The connection portion between adjacent lighting fixtures 300a and 300b will be described with reference to Figures 12(a) and 12(b). Figure 12(a) is a top view of the vicinity of the connection portion between lighting fixtures 300a and 300b. Figure 12(b) is a cross-sectional view of the vicinity of the connection portion between lighting fixtures 300a and 300b.

[0065] 12(a), the second mounting portion 130b of the lighting fixture 300a is provided on the -Y side of the center of the main body 110 in the orthogonal direction QD. On the other hand, the second mounting portion 130a of the lighting fixture 300b is provided on the +Y side of the center of the main body 110 in the orthogonal direction QD. Therefore, when the lighting fixtures 300 are attached to the system ceiling 500 so as to be aligned in a straight line along the longitudinal direction PD, interference between the second mounting portion 130a and the second mounting portion 130b can be suppressed. As a result, the lighting fixtures 300 can be attached to the first ceiling support bar 510 adjacent to each other in the longitudinal direction PD.

[0066] As described with reference to FIG. 7(b), in the longitudinal direction PD, the length d2 of the cover member 230 is longer than the length d1 of the main body 110 of the base unit 100 (FIG. 7(b)). Therefore, when the light source unit 200 is attached to the base unit 100, the cover member 230 protrudes further in the longitudinal direction PD than the main body 110. More specifically, as shown in FIG. 12(b), the cover member 230 of the lighting device 300a protrudes further in the +X direction than the main body 110. On the other hand, the cover member 230 of the lighting device 300b protrudes further in the -X direction than the main body 110. The amount by which the cover member 230 of the lighting device 300a protrudes further in the +X direction than the main body 110 and the amount by which the cover member 230 of the lighting device 300b protrudes further in the -X direction than the main body 110 are each less than half the width dimension of the support portion 514. Therefore, at the connection portion between lighting fixture 300a and lighting fixture 300b, the gap between the end (-X side end) of light source unit 200 of lighting fixture 300a and the end (+X side end) of light source unit 200 of lighting fixture 300b can be made as narrow as possible. As a result, a sense of unity can be achieved between light source unit 200 of lighting fixture 300a and light source unit 200 of lighting fixture 300b. Note that, in order to achieve a sense of unity between light source unit 200 of lighting fixture 300a and light source unit 200 of lighting fixture 300b, it is preferable that the amount of protrusion of cover member 230 of lighting fixture 300a in the +X direction from main body 110 and the amount of protrusion of cover member 230 of lighting fixture 300b in the -X direction from main body 110 be as close to half the width dimension of support portion 514 as possible.

[0067] In the system ceiling 500 described with reference to Figures 11, 12(a) and 12(b), multiple lighting fixtures 300 are attached to the system ceiling 500 so as to be arranged in a straight line, but multiple lighting fixtures 300 may also be attached so as to be arranged in an L-shape.

[0068] A lighting fixture 300 according to an embodiment of the present invention will be described with reference to Fig. 13. Fig. 13 is a schematic plan view showing a plurality of lighting fixtures 300 according to an embodiment of the present invention and a system ceiling 500. Description of overlapping portions between the lighting fixtures 300 described with reference to Figs. 1 to 10(b) and the system ceiling 500 will be omitted. In Fig. 13, a longitudinal direction PD1 indicates the longitudinal direction of lighting fixture 300a. Furthermore, in Fig. 13, a longitudinal direction PD2 indicates the longitudinal direction of lighting fixture 300b.

[0069] As shown in Fig. 13, lighting fixture 300a and lighting fixture 300b are attached to system ceiling 500 in an L-shape. Specifically, lighting fixture 300a is attached to system ceiling 500 so that its longitudinal direction PD1 is parallel to the X-axis. Lighting fixture 300b is attached to system ceiling 500 so that its longitudinal direction PD2 is parallel to the Y-axis.

[0070] The connecting portion between adjacent lighting fixtures 300a and 300b will be described with reference to Fig. 14. Fig. 14 is a schematic side view of the vicinity of the connecting portion between lighting fixtures 300a and 300b.

[0071] As described with reference to FIG. 7(b), in the longitudinal direction PD, length d2 of cover member 230 is longer than length d1 of main body 110 of base unit 100 (FIG. 7(b)). Therefore, when light source unit 200 is attached to base unit 100, cover member 230 protrudes in the longitudinal direction PD beyond main body 110. More specifically, as shown in FIG. 14, cover member 230 of lighting device 300a protrudes in the -X direction beyond main body 110.

[0072] 8, in the orthogonal direction QD, length d4 of cover member 230 is longer than length d3 of main body 110 of base unit 100 (FIG. 8). Therefore, when light source unit 200 is attached to base unit 100, cover member 230 protrudes in orthogonal direction QD beyond main body 110. More specifically, as shown in FIG. 14, cover member 230 of lighting device 300b protrudes in the +X direction beyond main body 110.

[0073] Therefore, at the connecting portion between lighting fixture 300a and lighting fixture 300b, the gap between the end (-X side end) of light source unit 200 of lighting fixture 300a and the side (+X side) of light source unit 200 of lighting fixture 300b can be made as narrow as possible. As a result, a sense of unity can be achieved between light source unit 200 of lighting fixture 300a and light source unit 200 of lighting fixture 300b.

[0074] Although the lighting fixtures 300a and 300b described with reference to Figures 13 and 14 are attached to the system ceiling 500 in an L-shape, the lighting fixtures 300a and 300b may be integrally formed as an L-shaped lighting device.

[0075] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 14). However, the present invention is not limited to the above-described embodiments, and can be embodied in various forms without departing from the spirit of the present invention (for example, (1) to (3) shown below). The drawings mainly show each component in a schematic manner for ease of understanding, and the thickness, length, number, etc. of each component shown in the drawings may differ from the actual components due to the convenience of creating the drawings. Furthermore, the materials, shapes, dimensions, etc. of each component shown in the above-described embodiments are merely examples and are not particularly limited, and various modifications are possible within a range that does not substantially depart from the effects of the present invention.

[0076] (1) The stand device (base unit 100) described with reference to Figures 1 to 14 has one first mounting portion 120, but the present invention is not limited to this. For example, the stand device (base unit 100) may have two or more first mounting portions 120. For example, the stand device (base unit 100) may be configured to mount a first mounting portion 120 to each of the through-hole pair 170a and the through-hole pair 170c.

[0077] (2) The support device (base unit 100) described with reference to Figures 1 to 14 supports light source unit 200 of lighting fixture 300 as the object to be attached, but the present invention is not limited to this. For example, the support device may support the lighting fixture itself, such as a spotlight, as the object to be attached. Alternatively, the object to be attached may be, for example, a speaker or an air conditioning unit.

[0078] (3) The support device (base unit 100) described with reference to Figures 1 to 14 is attached to the end of the lattice-shaped area R formed by the first ceiling support bar 510 and the second ceiling support bar 520 by the first attachment portion 120 and the second attachment portion 130, but the present invention is not limited to this. For example, the support device may be attached to approximately the center of the lattice-shaped area R formed by the first ceiling support bar 510 and the second ceiling support bar 520. In this case, the end of the base unit 100 in the longitudinal direction PD may be attached to the first ceiling support bar 510 or the second ceiling support bar 520 by the second attachment portion 130.

[0079] [Appendix 1] The support device disclosed in the present application is attached to a ceiling support bar. The support device supports an object to be attached. The support device comprises a main body portion and a first mounting portion. The main body portion extends in a longitudinal direction. The first mounting portion is provided on the main body portion. The first mounting portion mounts the main body portion to the ceiling support bar. The first mounting portion protrudes from the main body portion in an orthogonal direction, which is orthogonal to the longitudinal direction.

[0080] In the support device disclosed in the present application, it is preferable that the length of the first attachment portion in the longitudinal direction is shorter than the length of the main body portion.

[0081] In the support device disclosed in the present application, it is preferable that the first attachment portion is attachable to the main body portion at a changeable position.

[0082] The support device disclosed herein preferably further includes a second mounting portion. The second mounting portion is preferably provided on the main body portion. The second mounting portion preferably mounts the main body portion to the ceiling support bar. The second mounting portion preferably protrudes from the main body portion in the longitudinal direction.

[0083] In the support device disclosed in the present application, a fastener hole is preferably formed in the first mounting portion. The fastener hole is preferably capable of passing a fastener. The fastener hole preferably penetrates in the orthogonal direction.

[0084] The support device disclosed in the present application preferably further comprises a flange portion. The flange portion is preferably provided on the main body portion. The first attachment portion preferably protrudes from the main body portion in a first direction. The flange portion preferably protrudes from the main body portion in a second direction. The first direction preferably extends along the orthogonal direction. The second direction preferably extends along the orthogonal direction. The second direction preferably is opposite to the first direction.

[0085] The lighting fixture disclosed in the present application includes the support device described above and a light source unit. The light source unit is supported by the support device. The light source unit has a light-emitting unit, a frame member, and a cover member. The light-emitting unit emits light. The light-emitting unit is attached to the frame member. The cover member extends along the longitudinal direction. The cover member covers the light-emitting unit.

[0086] In the lighting fixture disclosed in the present application, it is preferable that the length of the cover member in the orthogonal direction is longer than the length of the main body of the support device.

[0087] In the lighting fixture disclosed in the present application, it is preferable that the length of the cover member in the longitudinal direction is longer than the length of the main body of the support device.

[0088] [Appendix 2] Aspect 1 of the present disclosure is a support device that is attached to a ceiling support bar and supports an object to be attached, comprising: a main body portion extending in the longitudinal direction; a first mounting portion attached to the main body portion and attaching the main body portion to the ceiling support bar; and a second mounting portion attached to the main body portion and attaching the main body portion to the ceiling support bar, wherein the first mounting portion protrudes from the main body portion in a direction perpendicular to the longitudinal direction, and the second mounting portion protrudes from the main body portion in the longitudinal direction, and the main body portion is provided with a pair of second mounting portions, one of the pair of second mounting portions is provided on one side of the main body portion in the longitudinal direction, and the other of the pair of second mounting portions is provided on the other side of the main body portion in the longitudinal direction, each of the pair of second mounting portions is provided on one side or the other of the center of the main body portion in the orthogonal direction, and the pair of second mounting portions are provided on opposite sides of each other in the orthogonal direction.

[0089] A second aspect of the present disclosure is the support device according to the first aspect, wherein the length of the first attachment portion is shorter than the length of the main body portion in the longitudinal direction.

[0090] A third aspect of the present disclosure is the support device according to the first or second aspect, wherein the first attachment portion is capable of changing an attachment position to the main body portion.

[0091] A fourth aspect of the present disclosure is a support device according to any one of the first to third aspects, wherein the first mounting portion has a fastener hole formed therein that penetrates in the perpendicular direction and allows a fastener to pass through.

[0092] A fifth aspect of the present disclosure is a support device in any one of the first to fourth aspects, further comprising a flange portion provided on the main body portion, wherein the first mounting portion protrudes from the main body portion in a first direction and the flange portion protrudes from the main body portion in a second direction, the first direction being along the orthogonal direction, and the second direction being along the orthogonal direction and opposite to the first direction.

[0093] A sixth aspect of the present disclosure is a lighting fixture comprising a support device according to any one of the first to fifth aspects and a light source unit supported by the support device, the light source unit having a light-emitting portion that emits light, a frame member to which the light-emitting portion is attached, and a cover member that extends along the longitudinal direction and covers the light-emitting portion.

[0094] A seventh aspect of the present disclosure is the lighting fixture of the sixth aspect, wherein the length of the cover member is longer than the length of the main body of the support device in the orthogonal direction.

[0095] An eighth aspect of the present disclosure is the lighting fixture of the sixth or seventh aspect, wherein the length of the cover member in the longitudinal direction is longer than the length of the main body of the support device. [Explanation of symbols]

[0096] 100 Base unit (support device) 110 Main body 112 Engagement hole 120 First mounting part 128 Fixture hole 130, 130a, 130b Second mounting portion 140 Tsuba 150 Power supply section 200 Light source unit (mounting object) 210 Light-emitting part 220 Frame members 230 Cover member 240 Engagement member 300, 300a, 300b, 300c lighting fixtures 510, 510a, 510b First ceiling support bar (ceiling support bar) 520, 520a, 520b Second ceiling support bar (ceiling support bar) D1 1st direction D2 2nd direction PD, PD1, PD2 Longitudinal direction QD Orthogonal direction

Claims

1. A light source unit; a support device attached to a ceiling support bar and supporting the light source unit located below, The support device includes: a longitudinally extending body portion; a first mounting portion provided on the main body portion for mounting the main body portion to the ceiling support bar, the first mounting portion protruding from the main body portion in a direction perpendicular to the longitudinal direction, The light source unit is a light-emitting unit that emits light; a cover member extending along the longitudinal direction and covering the light-emitting unit, In terms of vertical position, the lower end of the main body portion attached to the ceiling support bar by the first attachment portion is higher than the lower end of the ceiling support bar, the cover member includes a portion located above the lower end of the ceiling support bar and is disposed so as to protrude below the lower end of the ceiling support bar, a first portion of the cover member that protrudes downward below the lower end of the ceiling support bar has a bottom surface that extends in the longitudinal direction and is perpendicular to the vertical direction, and a pair of side surfaces that are parallel to each other and perpendicular to the bottom surface; A lighting device wherein the upper end of the cover member is above the light-emitting unit, the light-emitting unit emits light toward the inner surface of the cover member, and the light emitted by the light-emitting unit is emitted to the outside through the first part of the cover member.

2. The first portion of the cover member The lighting fixture according to claim 1 , wherein the height and width are substantially the same when viewed in cross section from the longitudinal direction.

Images