Lighting fixture

Abstract

To provide a lighting fixture which can reduce the number of man-hours in assembly.SOLUTION: A lighting fixture includes: a long light source; a frame which has a light source mounting surface part where the light source is mounted; a cover which covers the light source mounted on the light source mounting surface part; and a cover holding tool which is fixed to the light source mounting surface part, and which holds the cover. The cover holding tool has a tabular fixing part which is fixed to the light source mounting surface part on the lateral side in one long side part of the light source, by a fastening member. The light source is mounted on the light source mounting surface part by the one long side part of the light source being sandwiched between the fixing part of the cover holding tool fixed to the light source mounting surface part by the fastening member and the light source mounting surface part, and being pressed to the light source mounting surface part by the fixing part.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to lighting fixtures, and more particularly to a mounting structure for a light source. [Background technology]

[0002] Conventionally, there is a lighting fixture that includes a long light source, a long frame to which the light source is attached, and a pair of protrusions that protrude from a light source attachment surface portion of the frame that contacts the light source in an L-shaped cross section and form a space between the light source attachment surface portion and the light source attachment surface portion into which both ends of the light source in the short direction can be inserted (see, for example, Patent Document 1). In the lighting fixture of Patent Document 1, both ends of the light source are inserted into the space formed by the pair of protrusions, and the light source is fixed to the frame by screwing the light source attachment surface portion other than both ends of the light source with screws. In addition, the lighting fixture of Patent Document 1 has a plurality of components including the light source and the frame, and these components are assembled by screwing them together. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-036790 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a demand for reducing the number of assembly steps for lighting fixtures that are constructed by assembling a number of components. In the lighting fixture of Patent Document 1, the light source is fixed to the light source mounting surface portion using fastening members such as screws that fix the light source to the light source mounting surface portion. As such, the lighting fixture of Patent Document 1 requires only a process of fixing the light source to the light source mounting surface portion using fastening members, and there is room for improvement in terms of reducing the number of assembly steps.

[0005] The present disclosure is intended to solve the above-mentioned problems, and provides a lighting fixture that can reduce the number of assembly steps. [Means for solving the problem]

[0006] The lighting fixture of the present disclosure comprises a long light source, a frame having a light source mounting surface to which the light source is attached, a cover covering the light source attached to the light source mounting surface, and a cover holder fixed to the light source mounting surface and holding the cover, wherein the cover holder has a plate-shaped fixing portion fixed to the light source mounting surface by a fastening member on the side of one long side of the light source, and the light source is attached to the light source mounting surface by being pressed against the light source mounting surface by the fixing portion, with one long side of the light source being sandwiched between the fixing portion of the cover holder fixed to the light source mounting surface by the fastening member and the light source mounting surface. Effect of the Invention

[0007] The lighting fixture according to the present disclosure has a cover holder, and a fixing portion of the cover holder is attached to the light source mounting surface of the frame by a fastening member. The light source is elongated, and one long side of the light source is sandwiched between the fixing portion of the cover holder and the light source mounting surface of the frame and pressed against the light source mounting surface, thereby attaching the light source to the light source mounting surface. In this way, the light source is attached to the light source mounting surface by being sandwiched between the fixing portion of the cover holder fixed to the light source mounting surface by the fastening member and the light source mounting surface, and the light source can be attached to the light source mounting surface at the same time as fixing the cover holder to the light source mounting surface. Therefore, the lighting fixture can reduce the assembly man-hours. [Brief description of the drawings]

[0008] [Figure 1] 1 is an exploded perspective view showing a lighting fixture according to a first embodiment and a system ceiling to which the lighting fixture is attached. [Diagram 2] 1 is a perspective view of a lighting fixture according to a first embodiment attached to a system ceiling, as viewed from above. FIG. [Diagram 3] FIG. 2 is an exploded perspective view of the lighting fixture according to the first embodiment. [Figure 4] FIG. 2 is an exploded perspective view of the light source unit according to the first embodiment. [Diagram 5]2 is a view of the lighting fixture according to the first embodiment from below with the cover removed from the light source unit. FIG. [Figure 6] FIG. 6 is an enlarged view of the area surrounded by the dotted line in FIG. 5. [Figure 7] 2 is an enlarged partial cross-sectional view of the light source unit according to the first embodiment. FIG. [Figure 8] 2 is a diagram showing a state in which a light source is placed on a frame of the light source unit according to the first embodiment. FIG. [Figure 9] 9 is a diagram showing a state in which a cover holding portion is fixed to the assembly in the state of FIG. 8. FIG. [Figure 10] 10 is a diagram showing a state in which a cover is attached to the assembly in the state shown in FIG. 9. FIG. [Figure 11] 11 is a diagram showing a state in which a cover is attached to the assembly in the state shown in FIG. 10, completing the assembly of the light source unit. [Figure 12] 12 is a diagram showing a state in which the light source unit in FIG. 11 is attached to a fixture body. FIG. [Figure 13] 12 is a diagram showing a state in which the light source unit in FIG. 11 is completely attached to the fixture body. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a lighting device 1 according to the present disclosure will be described with reference to the drawings. Note that the present disclosure is not limited to the embodiment described below. Also, in the following drawings, including FIG. 1, the size relationship of each component may differ from the actual one. Also, in the following description, terms indicating directions are used as appropriate to facilitate understanding, but these terms are for the purpose of explanation and do not limit the present disclosure. Examples of terms indicating directions include "up", "down", "right", "left", "front", and "rear".

[0010] Embodiment 1 Fig. 1 is an exploded perspective view showing a lighting fixture 1 according to embodiment 1 and a system ceiling 9 to which the lighting fixture 1 is attached. Fig. 2 is a perspective view showing the lighting fixture 1 according to embodiment 1 attached to the system ceiling 9, as viewed from above. Fig. 3 is an exploded perspective view of the lighting fixture 1 according to embodiment 1.

[0011] The lighting fixture 1 is fixed to a system ceiling 9. The system ceiling 9 is formed by combining a plurality of support members 7 such as so-called T-bars in a lattice pattern. The system ceiling 9 has a ceiling opening 8 surrounded by four support members 7. The lighting fixture 1 is once inserted from below the ceiling opening 8 of the system ceiling 9 into an upper ceiling space, and then fixed to the system ceiling 9. In detail, the lighting fixture 1 is once inserted into the ceiling space, and then lowered downward toward the system ceiling 9, so that a mounting member 6 (described later) provided on the lighting fixture 1 is hung on the support member 7 of the system ceiling 9 as shown in FIG. 2 and fixed to the system ceiling 9. Here, the width direction of the lighting fixture 1 is the X direction, the depth direction of the lighting fixture 1 is the Y direction, the ceiling side of the height direction of the lighting fixture 1 is the Z1 direction, and the floor side of the height direction of the lighting fixture 1 is the Z2 direction.

[0012] The lighting fixture 1 includes a fixture body 2, a power supply device 3, a light source unit 4, a facility plate 5, and a mounting member 6.

[0013] (Apparatus body 2) The fixture body 2 has a size similar to that of the ceiling opening 8 of the system ceiling 9, and is in the shape of a frame. The fixture body 2 has four side panels 21, two partition panels 26, and a bottom panel 27.

[0014] (Side Panel 21) The side plates 21 are plate-shaped members. Two of the side plates 21 are disposed opposite each other, and the remaining two side plates 21 are also disposed opposite each other, forming a rectangular frame body by the four side plates 21. The side plates 21 are provided at their lower ends with flanges 22 extending outward. Of the four side plates 21, two side plates 21 facing each other in the Y direction have mounting members 6 attached to their outer surfaces for mounting the lighting fixture 1 to the system ceiling 9. Two mounting members 6 are provided side by side in the X direction. The lighting fixture 1 is fixed to the system ceiling 9 by hanging the mounting members 6 on the support members 7 of the system ceiling 9 as shown in FIG. 2.

[0015] (Partition 26) 1 and 3, the two partition plates 26 have the same length as the side plates 21, and divide the inside of the rectangular frame formed by the four side plates 21 into three spaces. Within the fixture main body 2, the two spaces on both sides in the X direction are light source accommodating sections 2a, and the space surrounded by the two light source accommodating sections 2a is an equipment accommodating section 2b. As shown in FIG. 3, the light source accommodating section 2a accommodates the power supply device 3 and the light source unit 4, and the equipment accommodating section 2b accommodates equipment parts (not shown) such as a speaker or an emergency light.

[0016] (Bottom plate 27) 2, the bottom plate 27 connects the upper ends of the four side plates 21. In the bottom plate 27, a ventilation opening 27a, which is an air conditioning return for ventilating between the living room and the attic space, is formed in a portion corresponding to the light source housing section 2a.

[0017] (Power supply unit 3) The power supply device 3 is attached to the bottom plate 27 in the light source accommodating portion 2a of the fixture body 2. The power supply device 3 supplies power to the light source unit 4, and is connected to an external power supply (not shown).

[0018] (Light source unit 4) The light source unit 4 is turned on by power supplied from the power supply device 3, and is accommodated in the light source accommodating section 2a. The light source unit 4 has a frame 41, a cover 42, an end plate section 43, and an attachment section 44. The frame 41 is a long member that constitutes the outer casing of the light source unit 4, and a light source 40 (see FIG. 4) described below is attached to the frame 41. The end plate section 43 is a member that covers both ends of the frame 41 in the Y direction. The attachment section 44 is provided on the end plate section 43, and is attached to the side plate 21 of the fixture body 2 using a screw or the like. The light source unit 4 is attached to the fixture body 2 by the attachment section 44.

[0019] (Facility Plate 5) The equipment plate 5 is a rectangular plate-like member. The equipment plate 5 is attached to the equipment housing portion 2b of the device body 2 and covers the equipment members housed in the equipment housing portion 2b.

[0020] (Detailed configuration of light source unit 4) Fig. 4 is an exploded perspective view of the light source unit 4 according to the first embodiment. Fig. 5 is a view from below of the light source unit 4 of the lighting device 1 according to the first embodiment with the cover 42 removed. Fig. 6 is an enlarged view of the part surrounded by the dotted line in Fig. 5. Fig. 7 is an enlarged partial cross-sectional view of the light source unit 4 according to the first embodiment.

[0021] As described above, the light source unit 4 includes the frame 41, the cover 42, the end plate portion 43, and the attachment portion 44. The light source unit 4 further includes a light source 40 and a cover holder 45.

[0022] (Light source 40) The light source 40 has a light emitting element 40a and a substrate 40b on whose surface 401 the light emitting element 40a is mounted, and is configured in an elongated shape as a whole. In the illustrated example, two light sources 40 are provided spaced apart in the X direction, but one light source may be used. The light source 40 is elongated with the X direction as the short side direction and the Y direction as the long side direction. The light emitting element 40a emits light when supplied with power.

[0023] The light emitting elements 40a are, for example, light emitting diodes (hereinafter referred to as LEDs) and are mounted in a row or a staggered pattern along the Y direction, which is the longitudinal direction, on a surface 401, which is the mounting surface of the substrate 40b. The light emitting elements 40a may be a solid state laser, a semiconductor laser, an organic EL (Electro Luminescence), an inorganic EL, or the like. The substrate 40b may be a glass-epoxy substrate (FR-4), a glass-composite substrate (CEM-3), a paper-epoxy substrate (FR-3), a paper-phenol substrate (XPC), a metal-based substrate, or the like.

[0024] As described in detail below, the light source 40 is attached to the light source mounting surface portion 41a by sandwiching one long side portion 40b1 of the substrate 40b between a light source mounting surface portion 41a (described later) of the frame 41 and a fixing portion 45a (described later) of the cover holder 45 and pressing the light source mounting surface portion 41a by the fixing portion 45a.

[0025] (Frame 41) The frame 41 is an elongated member that constitutes the outer casing of the light source unit 4. The frame 41 is elongated in the Y direction, and has a rectangular plate-shaped light source mounting surface portion 41a to which the light source 40 is attached, and a pair of rectangular plate-shaped side portions 41b extending in the Z2 direction from both ends in the X direction, which is the short side direction of the light source mounting surface portion 41a. The frame 41 is formed by integrating the light source mounting surface portion 41a and the pair of side portions 41b. The frame 41 is formed of, for example, a sheet metal member.

[0026] The light source mounting surface portion 41a has a light source movement restricting portion 10 around the mounting area where the light source 40 is mounted, which contacts the light source 40 and restricts the movement of the light source 40 in the planar direction on the light source mounting surface portion 41a. The light source movement restricting portion 10 has a first restricting portion 41a1 and a second restricting portion 41a2.

[0027] The first restricting portion 41a1 is a portion that restricts the movement of the light source 40 to one side in the short-side direction (X direction) by contacting an edge of one long side portion 40b1 of the substrate 40b of the light source 40 as shown in FIG. 6. Since a fixing portion 45a of a cover holder 45 described later is fixed to the side of the long side portion 40b1 of the substrate 40b in the light source mounting surface portion 41a, the first restricting portion 41a1 can be said to be a portion that restricts the movement of the light source 40 in the direction approaching the fixing portion 45a. The first restricting portion 41a1 is configured as a protrusion formed by, for example, embossing so as to protrude in the Z2 direction from the plate surface of the frame 41. In the illustrated example, three first restricting portions 41a1 are formed at intervals in the Y direction as shown in FIG. 4, but the number is not limited to three, and may be two, four or more. Further, the first restricting portion 41a1 is not limited to a protrusion that contacts the edge of the long side portion 40b1, but may be any configuration that contacts the long side portion 40b1 and has the above-mentioned function.

[0028] The second restricting portion 41a2 is a portion that contacts the other long side portion 40b2 in the short side direction (X direction) of the substrate 40b of the light source 40 to restrict movement of the light source 40 to the other side in the short side direction. The second restricting portion 41a2 can also be said to be a portion that restricts movement of the light source 40 in a direction away from the fixing portion 45a. The second restricting portion 41a2 is formed of a cut-and-raised piece cut and raised from the plate surface of the light source mounting surface portion 41a. As shown in FIG. 7, the second restricting portion 41a2 formed of the cut-and-raised piece extends in the Z2 direction from the plate surface of the light source mounting surface portion 41a, and then extends in a direction facing the Z direction on the surface 401 of the substrate 40b.

[0029] The second restricting portion 41a2 formed of a cut-and-raised piece is adjusted in its position on the light source mounting surface portion 41a so that a portion extending in the Z2 direction contacts the edge of the long side portion 40b2 of the substrate 40b attached to the mounting region of the light source mounting surface portion 41a. The second restricting portion 41a2 is not limited to a cut-and-raised piece that contacts the edge of the long side portion 40b2, and may be any configuration that contacts the long side portion 40b2 and has the above function.

[0030] The light source attachment surface portion 41a further has a first fixing hole 41a3 for fixing the cover holder 45. A plurality of the first fixing holes 41a3 are formed at intervals in the Y direction.

[0031] (Cover 42) The cover 42 is a rectangular plate-like member. The cover 42 covers the light source 40 attached to the light source attachment surface portion 41a of the frame 41. The cover 42 is elongated with the X direction as the short side direction and the Y direction as the long side direction. The cover 42 is a light-transmitting cover, and is formed of a resin material such as acrylic.

[0032] (Cover holder 45) The cover holder 45 is fixed to the frame 41 and holds the cover 42. A pair of the cover holders 45 are provided spaced apart in the X direction so as to hold both ends of the cover 42 in the X direction. The cover holder 45 has a fixing portion 45a, a contact portion 45b, and a gap forming portion 45c. The cover holder 45 can be formed, for example, by bending a sheet metal member. The cover holder 45, which will be described in detail below, also functions as an attachment member for attaching the light source 40 to the light source attachment surface portion 41a of the frame 41. Since there are two cover holders 45, in the illustrated example, the two light sources 40 are attached to the light source attachment surface portion 41a of the frame 41 by the two cover holders 45, but this is not limited thereto.

[0033] The fixing portion 45a is a portion fixed to the light source mounting surface portion 41a of the frame 41 and is configured in a long plate shape. The fixing portion 45a is a portion fixed to the light source mounting surface portion 41a on the side of one long side portion 40b1 of the light source 40. The fixing portion 45a has a long plate-shaped long plate portion 45a1 extending in the Y direction which is the longitudinal direction of the light source 40, and a claw portion 45a2 protruding from an edge portion 45a11 of the long plate portion 45a1 on the light source 40 side.

[0034] The long plate portion 45a1 is a portion fixed to the light source mounting surface portion 41a by the fastening member 11. The fastening member 11 has a screw 11a and a nut 11b as shown in FIG. 7. The fastening member 11 is not limited to a configuration having the screw 11a and the nut 11b, and may be composed of only the screw 11a or may be composed of a bolt. A plurality of second fixing holes 45a3 are formed at intervals in the Y direction. The long plate portion 45a1 has the second fixing holes 45a3 into which the fastening members 11 are inserted. The second fixing holes 45a3 are formed at positions corresponding to the first fixing holes 41a3 formed in the frame 41.

[0035] The claw portion 45a2 is a portion that elastically deforms when the cover holder 45 is fixed to the frame 41 with the fastening member 11, and presses the light source 40 against the light source mounting surface portion 41a. The claw portion 45a2 is configured such that at least the tip portion of the claw portion 45a2 overlaps with the surface 401 of the light source 40 when the cover holder 45 is fixed to the light source mounting surface portion 41a. The claw portion 45a2 is formed flush with the long plate portion 45a1 before the cover holder 45 is fixed to the light source mounting surface portion 41a.

[0036] The claw portions 45a2 are formed at intervals in the Y direction. The claw portions 45a2 are formed at positions that do not overlap with the first restricting portion 41a1 provided on the light source mounting surface portion 41a when the cover holder 45 is fixed to the light source mounting surface portion 41a. In other words, the first restricting portion 41a1 is formed at a position on the light source mounting surface portion 41a that does not overlap with the claw portion 45a2 of the cover holder 45 fixed to the light source mounting surface portion 41a, more specifically, at a position between the fixing portion 45a and one long side portion 40b1 of the light source 40 that does not overlap with the claw portion 45a2 as shown in FIG.

[0037] The contact portion 45b is formed in a long plate shape extending perpendicularly in the Z2 direction from the edge of the fixed portion 45a on the opposite side to the light source 40. The contact portion 45b is formed so that its length in the Y direction is longer than the length of the fixed portion 45a in the Y direction. The contact portion 45b has both ends 45b1 in the Y direction bent perpendicularly inward. The contact portion 45b contacts the side portion 41b and the end plate portion 43 of the frame 41 when the cover holder 45 is fixed to the light source mounting surface portion 41a.

[0038] The gap forming portion 45c is formed in a long plate shape extending vertically inward from the lower end of the abutting portion 45b. As shown in Fig. 7, the gap forming portion 45c is separated from the flange portion 41b1 of the frame 41 when the cover holder 45 is fixed to the light source mounting surface portion 41a. The gap forming portion 45c forms a gap between the flange portion 41b1 of the frame 41 and the gap forming portion 45c, into which the cover 42 is inserted and held.

[0039] Next, a procedure for assembling the light source unit 4 having the above configuration will be described.

[0040] 8 to 13 are explanatory diagrams of the assembly procedure of the light source unit 4 according to the first embodiment. FIG. 8 is a diagram showing a state in which the light source 40 is placed on the frame 41 of the light source unit 4 according to the first embodiment. FIG. 9 is a diagram showing a state in which the cover holder 45 is fixed to the assembly in the state of FIG. 8. FIG. 10 is a diagram showing a state in which the cover 42 is attached to the assembly in the state of FIG. 9. FIG. 11 is a diagram showing a state in which the cover 42 is attached to the assembly in the state of FIG. 10 and the assembly of the light source unit 4 is completed. FIG. 12 is a diagram showing a state in which the light source unit 4 in FIG. 11 is attached to the fixture body 2. FIG. 13 is a diagram showing a state in which the attachment of the light source unit 4 in FIG. 11 to the fixture body 2 is completed.

[0041] As shown in Fig. 8, the assembler turns the frame 41 upside down from the installation position and places the light source 40 on the light source mounting surface 41a. At this time, the assembler slides the light source 40 toward the second restricting portion 41a2 as shown by the arrow in Fig. 8, until the light source 40 abuts against the second restricting portion 41a2. In this state, the edge of the long side portion 40b2 of the substrate 40b abuts against the second restricting portion 41a2, and the edge of the long side portion 40b1 of the substrate 40b abuts against the first restricting portion 41a1, so that the movement of the light source 40 in the X direction is restricted.

[0042] Next, the assembler fixes the cover holder 45 to the frame 41 as shown in FIG. 9. More specifically, the cover holder 45 is placed on the light source mounting surface 41a of the frame 41 so that the second fixing hole 45a3 of the cover holder 45 faces the first fixing hole 41a3 of the frame 41. In a state in which the cover holder 45 is placed on the light source mounting surface 41a of the frame 41, the abutting portion 45b of the cover holder 45 abuts against the side portion 41b of the frame 41. Then, the cover holder 45 is fastened and fixed to the light source mounting surface 41a of the frame 41 using the fastening member 11. More specifically, as shown by the dotted arrow in FIG. 9, the screw 11a is passed through the first fixing hole 41a3 and the second fixing hole 45a3, and as shown in FIG. 7, the nut 11b is fastened from the tip side of the shaft portion to fasten and fix the cover holder 45 to the light source mounting surface 41a of the frame 41.

[0043] Here, when the cover holder 45 is fastened and fixed to the light source mounting surface 41a of the frame 41 using the fastening members 11, the claws 45a2 in contact with the surface 401 of the light source 40 are elastically deformed with the connection portion with the long plate portion 45a1 as a fulcrum. When this elastic force is applied to the surface 401 of the light source 40, the light source 40 is pressed against the light source mounting surface 41a and attached to the light source mounting surface 41a. Note that, although the claws 45a2 are flush with the long plate portion 45a1 in the above description, they may be slightly inclined with respect to the long plate portion 45a1 in advance, and may be further inclined by fastening and fixing the cover holder 45 using the fastening members 11, so that the elastic force of the claws 45a2 is applied to the surface 401 of the light source 40.

[0044] 10, the assembly worker screws the end plate portion 43 and the mounting portion 44 to one end portion in the Y direction (the end portion on the front side in FIG. 10). Next, the cover 42 is slid in the direction of the arrow in FIG. 10 from the other end portion in the Y direction (the end portion on the rear side in FIG. 10) side into the gap formed between the gap forming portion 45c of the cover holder 45 and the flange portion 41b1 of the frame 41 to mount the cover 42. After mounting the cover 42, the end plate portion 43 and the mounting portion 44 are screwed to the other end portion in the Y direction of the frame 41. With the above steps, the assembly of the light source unit 4 is completed as shown in FIG. 11.

[0045] 12, the assembly worker places the light source unit 4 in the light source housing portion 2a of the fixture body 2, wires and connects the electric wires in the light source housing portion 2a, and then uses the screw 13 to screw the mounting portion 44 to the fixture body 2. This fixes the light source unit 4 to the fixture body 2.

[0046] In the above-mentioned assembly procedure, a method of assembling the device main body 2 upside down from the installed state shown in FIG. 1 has been exemplified, but the present invention is not limited to this.

[0047] Conventional lighting fixtures require only a process of fixing the light source to the light source mounting surface portion using a screw. In contrast, lighting fixture 1 can fix light source 40 to light source mounting surface portion 41a at the same time as fixing cover holder 45 to light source mounting surface portion 41a. Therefore, lighting fixture 1 can reduce the number of assembly steps.

[0048] Moreover, if the light source 40 and the cover holder 45 were fixed separately to the light source mounting surface 41a, a fastening member for fixing the light source 40 and a fastening member for fixing the cover holder 45 would be required. In this structure, the fastening member for fixing the light source 40 and the fastening member for fixing the cover holder 45 are required, which leads to an increase in material costs. In contrast, the lighting fixture 1 can fix the light source 40 to the light source mounting surface 41a using the fastening member 11 that fixes the cover holder 45, so that the material costs can be reduced compared to a structure in which the light source 40 and the cover holder 45 are fixed separately to the light source mounting surface 41a.

[0049] Another possible method for attaching the light source 40 to the light source attachment surface 41a is to use an adhesive. However, the method using an adhesive requires dedicated processing equipment, which increases processing costs. In contrast, the lighting fixture 1 is fixed using the fastening members 11, so dedicated processing equipment is not required, and processing costs can be reduced.

[0050] Furthermore, in the lighting fixture 1 of the first embodiment, the light source 40 is attached to the light-source mounting surface portion 41a by being pressed against the light-source mounting surface portion 41a, so that heat from the light source 40 is transferred to the entire frame 41 via the contact surface with the light-source mounting surface portion 41a and dissipated. Therefore, the lighting fixture 1 of the first embodiment can improve heat dissipation properties.

[0051] As described above, the lighting fixture 1 of the first embodiment includes the long light source 40, the frame 41 having the light source mounting surface portion 41a to which the light source 40 is attached, the cover 42 covering the light source 40 attached to the light source mounting surface portion 41a, and the cover holder 45 fixed to the light source mounting surface portion 41a and holding the cover 42. The cover holder 45 has a plate-shaped fixing portion 45a fixed to the light source mounting surface portion 41a by the fastening member 11 on the side of one long side portion 40b1 of the light source 40. The light source 40 is attached to the light source mounting surface portion 41a by sandwiching one long side portion 40b1 of the light source 40 between the light source mounting surface portion 41a and the fixing portion 45a of the cover holder 45 and pressing the one long side portion 40b1 of the light source 40 against the light source mounting surface portion 41a by the fixing portion 45a.

[0052] With the above-mentioned configuration, in the lighting fixture 1, the light source 40 is attached to the light source mounting surface portion 41a by the cover holder 45 fixed to the light source mounting surface portion 41a by the fastening members 11. In other words, in the lighting fixture 1, the light source 40 can be fixed to the light source mounting surface portion 41a using the fastening members 11 that fix the cover holder 45 to the light source mounting surface portion 41a. Therefore, in the lighting fixture 1, the light source 40 can be fixed to the light source mounting surface portion 41a at the same time as the cover holder 45 is fixed to the light source mounting surface portion 41a, thereby reducing the number of assembly steps.

[0053] The fixing portion 45a of the cover holder 45 extends along the longitudinal direction of the light source 40, and has a claw portion 45a2 that protrudes from an edge portion 45a11 on the light source 40 side of the fixing portion 45a and overlaps with the surface 401 of the light source 40. The claw portion 45a2 is elastically deformed when the cover holder 45 is fastened to the frame 41 with the screw 11a, and the elastic force is applied to the surface 401 of the light source 40, so that the light source 40 is pressed against the light source mounting surface portion 41a.

[0054] With the above-described configuration, the lighting fixture 1 can fix the light source 40 to the light-source mounting surface portion 41a at the same time as fixing the cover holder 45 to the light-source mounting surface portion 41a, thereby reducing the number of assembly steps.

[0055] A plurality of claw portions 45a2 are provided along the longitudinal direction on an edge portion 45a11 of the fixing portion 45a on the light source 40 side.

[0056] In the lighting fixture, the light source 40 can be firmly attached to the light source attachment surface portion 41a by the plurality of claw portions 45a2.

[0057] The lighting fixture 1 includes a light source movement restricting portion 10 that is provided on the light source mounting surface portion 41a and contacts the light source 40 to restrict movement of the light source 40 in the planar direction on the light source mounting surface portion 41a.

[0058] With the above-described configuration, the lighting fixture 1 can determine the position of the light source 40 relative to the light-source attachment surface portion 41a.

[0059] The light source movement regulating portion 10 has a first regulating portion 41a1 that contacts one of the long side portions 40b1 of the light source 40 to regulate movement toward the fixed portion 45a of the light source 40, and a second regulating portion 41a2 that contacts the other long side portion 40b1 of the light source 40 to regulate movement away from the fixed portion 45a of the light source 40.

[0060] In the lighting fixture 1, the first restricting portion 41a1 and the second restricting portion 41a2 can determine the position of the light source 40 relative to the light-source attachment surface portion 41a.

[0061] The first restricting portion 41a1 is a protrusion formed at a position between the fixing portion 45a of the cover holder 45 and one long side portion 40b1 of the light source 40 so as not to overlap with the claw portion 45a2 and protruding from the light source mounting surface portion 41a. The second restricting portion 41a2 is a cut-and-raised piece cut and raised from the light source mounting surface portion 41a.

[0062] In the lighting fixture 1, a protrusion can be used as the first restriction portion 41a1, and a cut-and-raised piece can be used as the second restriction portion 41a2.

[0063] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) A long light source; a frame having a light source mounting surface portion to which the light source is attached; a cover attached to the light source mounting surface portion to cover the light source; a cover holder fixed to the light source mounting surface portion and holding the cover, the cover holder has a plate-shaped fixing portion that is fixed to the light source mounting surface portion by a fastening member on one side of one long side of the light source, The light source is A lighting fixture in which one of the long sides of the light source is sandwiched between the fixing portion of the cover holder, which is fixed to the light source mounting surface portion by the fastening member, and the light source mounting surface portion, and is pressed against the light source mounting surface portion by the fixing portion. (Appendix 2) the fixing portion of the cover holder extends along a longitudinal direction of the light source, and has a claw portion that protrudes from an edge portion of the fixing portion on the light source side and overlaps a surface of the light source, The lighting fixture described in Appendix 1, wherein the claw portion elastically deforms when the cover holder is tightened to the frame with the fastening member, and the elastic force is applied to the surface of the light source, pressing the light source against the light source mounting surface portion. (Appendix 3) The lighting device according to claim 2, wherein the claw portion is provided in a plurality of portions along the longitudinal direction on an edge portion of the fixing portion facing the light source. (Appendix 4) 4. The lighting device according to claim 1, further comprising a light source movement regulating portion provided on the light source mounting surface portion and contacting the light source to regulate the movement of the light source in a planar direction on the light source mounting surface portion. (Appendix 5) 5. The lighting device according to claim 4, wherein the light source movement restricting portion has a first restricting portion that contacts the one long side portion of the light source to restrict movement of the light source in a direction approaching the fixed portion. (Appendix 6) The lighting device described in Appendix 5, which is dependent on Appendix 2, wherein the first regulating portion is formed at a position between the fixing portion of the cover holder and the one long side portion of the light source so as not to overlap with the claw portion, and is a protrusion protruding from the light source mounting surface portion. (Appendix 7) The lighting device according to claim 4 or 5, wherein the light source movement regulating portion has a second regulating portion that contacts the other long side portion of the light source to regulate the movement of the light source in a direction away from the fixed portion. (Appendix 8) 8. The lighting fixture according to claim 7, wherein the second regulating portion is constituted by a cut-out piece that is cut and raised from the light source mounting surface portion. [Explanation of symbols]

[0064] 1 Lighting fixture, 2 Fixture body, 2a Light source housing section, 2b Equipment housing section, 3 Power supply unit, 4 Light source unit, 5 Equipment plate, 6 Mounting member, 7 Support member, 8 Ceiling opening, 9 System ceiling, 10 Light source movement restricting section, 11 Fastening member, 11a Screw, 11b Nut, 13 Screw, 21 Side plate, 22 Flange, 26 Partition plate, 27 Bottom plate, 27a Ventilation opening, 40 Light source, 40a Light emitting element, 40b Board, 40b1 Long side portion, 40b2 Long side portion, 41 Frame, 41a Light source mounting surface portion, 41a1 First restricting portion, 41a2 Second restricting portion, 41a3 First fixing hole, 41b Side portion, 41b1 Flange portion, 42 Cover, 43 End plate portion, 44 Mounting portion, 45 Cover holder, 45a Fixing portion, 45a1 long plate portion, 45a11 edge portion, 45a2 claw portion, 45a3 second fixing hole, 45b abutment portion, 45b1 both end portions, 45c gap forming portion, 401 surface.

Claims

1. A long light source; a frame having a light source mounting surface portion to which the light source is attached; a cover attached to the light source mounting surface portion to cover the light source; a cover holder fixed to the light source mounting surface portion and holding the cover, the cover holder has a plate-shaped fixing portion that is fixed to the light source mounting surface portion by a fastening member on one side of one long side of the light source, The light source is A lighting fixture in which one of the long sides of the light source is sandwiched between the fixing portion of the cover holder, which is fixed to the light source mounting surface portion by the fastening member, and the light source mounting surface portion, and is pressed against the light source mounting surface portion by the fixing portion.

2. the fixing portion of the cover holder extends along a longitudinal direction of the light source, and has a claw portion that protrudes from an edge portion of the fixing portion on the light source side and overlaps a surface of the light source, The lighting fixture of claim 1, wherein the claw portion elastically deforms when the cover holder is tightened to the frame with the fastening member, and the elastic force is applied to the surface of the light source, pressing the light source against the light source mounting surface portion.

3. The lighting device according to claim 2 , wherein the claw portion is provided in a plurality of portions along the longitudinal direction on an edge portion of the fixing portion facing the light source.

4. A lighting device as described in any one of claims 1 to 3, comprising a light source movement regulating portion provided on the light source mounting surface portion and contacting the light source to regulate the movement of the light source in a planar direction on the light source mounting surface portion.

5. The lighting fixture according to claim 4 , wherein the light source movement restricting portion includes a first restricting portion that comes into contact with the one long side portion of the light source to restrict movement of the light source in a direction approaching the fixed portion.

6. A lighting fixture as described in claim 5 which is dependent on claim 2, wherein the first regulating portion is formed at a position between the fixing portion of the cover holder and the one long side portion of the light source so as not to overlap with the claw portion, and is constituted by a protrusion protruding from the light source mounting surface portion.

7. The lighting fixture according to claim 4 , wherein the light source movement restricting portion includes a second restricting portion that contacts the other long side of the light source to restrict movement of the light source in a direction away from the fixed portion.

8. The lighting fixture according to claim 7 , wherein the second restriction portion is formed of a cut-and-raised piece that is cut and raised from the light source mounting surface portion.

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