Lighting fixtures

Abstract

To provide a luminaire in which main components can be integrated so as to be stacked from the same direction, and having excellent mass productivity.SOLUTION: A luminaire 1 comprises a main body 50 covering a portion of a first surface on the light emitting side of a board 61 on which a light emitting part for emitting light is mounted, a frame body 10 comprising an inner peripheral surface part defining a portion of the travel path of the light, and a top plate 80 covering at least a portion of a second surface on the side opposite to the light emitting side in the thickness direction of the board 61. The frame body 10, the main body 50, and the top plate 80 are stacked in the order of the frame body 10, the main body 50, and the top plate 80. The luminaire 1 comprises male screws 7 for fixing the frame body 10, the main body 50, and the top plate 80 to one another.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This disclosure relates to lighting fixtures.

Background Art

[0002] Conventionally, as a lighting fixture, there is a downlight described in Patent Document 1. This downlight includes a light source module, a radiator, a power supply device, a reflector, and a decorative frame, and the light source module is installed in the radiator. This downlight assembles the power supply device from the side of the radiator, while assembling the reflector and the decorative frame from the light-emitting side of the light source module. This downlight assembles a plurality of components from different directions and integrates them together using a number of screws.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] If the main components can be integrated by stacking them from the same direction, the man-hours required for assembly can be reduced, and mass productivity can be improved. Therefore, the lighting fixture of the present disclosure aims to provide a lighting fixture that can integrate the main components by stacking them from the same direction and has excellent mass productivity.

Means for Solving the Problems

[0005] To solve the above problems, the lighting fixture according to the present disclosure includes a main body that covers a part of the first surface on the light-emitting side of a substrate on which a light-emitting part that emits light is mounted, a frame body having an inner peripheral surface part that defines a part of the light traveling path, and a top plate that covers at least a part of the second surface on the side opposite to the light-emitting side in the thickness direction of the substrate. The frame body, the main body, and the top plate are stacked in this order, and an integral and inseparable fixing member for fixing the frame body, the main body, and the top plate to each other is provided.

[0006] The frame, body, and top plate are stacked in that order during assembly, from the light-emitting side to the opposite side. However, in the assembled lighting fixture, the frame may include a portion located on the opposite side of the light-emitting side from the point on the body that is closest to the light-emitting side. Similarly, in the assembled lighting fixture, the body may also include a portion located on the opposite side of the light-emitting side from the point on the top plate that is closest to the light-emitting side. [Effects of the Invention]

[0007] According to this disclosure, the main components can be integrated by stacking them from the same direction, enabling the realization of a lighting fixture with excellent mass-producibility. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of a lighting fixture according to one embodiment of the present disclosure. [Figure 2] This is an exploded perspective view of a lighting fixture. [Figure 3A] This is a perspective view of the frame from the second oblique side (opposite the light emission side). [Figure 3B] This is a perspective view of the frame from the first oblique side (light emission side). [Figure 4A] This is a perspective view of the cover from a second, oblique angle. [Figure 4B] This is a side view of the cover as seen from the radially outward (side) side. [Figure 5] This is a perspective view illustrating the positioning of the cover relative to the frame. [Figure 6A] This is a perspective view of the reflector from the second oblique side. [Figure 6B] This is a perspective view of the reflector from the first oblique side. [Figure 7] This is a perspective view showing the reflector fitted into the cover. [Figure 8] This is a perspective view of the main unit from a second, oblique angle. [Figure 9]It is a perspective view for explaining the assembly of the main body to the reflector. [Figure 10] It is a perspective view for explaining the assembly of the light source module to the reflector. [Figure 11A] It is a perspective view when the light source module is viewed from the first diagonal side. [Figure 11B] It is a perspective view when the light source module is viewed from the second diagonal side. [Figure 12] It is a perspective view for explaining the locking structure of the light source module to the reflector. [Figure 13] It is a perspective view for explaining the bending of the pair of first locking pieces and the pair of second locking pieces in the main body. [Figure 14] It is a perspective view for explaining the restraint of the substrate using the pair of first locking pieces and the pair of second locking pieces. [Figure 15] In the lighting fixture, it is a plan view when the cover, the reflector, and the substrate are viewed from the first side in the height direction. [Figure 16A] It is a perspective view when the terminal block is viewed from the connection side to the power supply device and the second diagonal side. [Figure 16B] It is a perspective view when the terminal block is viewed from the side opposite to the connection side to the power supply device and the second diagonal side. [Figure 16C] It is a perspective view when the terminal block is viewed from the side opposite to the connection side to the power supply device and the first diagonal side. [Figure 17] It is a perspective view of the terminal block cover. [Figure 18] It is a perspective view for explaining the attachment of the terminal block cover to the terminal block. [Figure 19] It is a perspective view for explaining the positioning of the terminal block with respect to the main body. [Figure 20] It is a perspective view for explaining the insertion of the pair of blade-shaped terminals of the terminal block into the pair of blade receiving portions of the power supply device. [Figure 21A] It is a perspective view when the top plate is viewed from the first diagonal side. [Figure 21B] It is a perspective view when the top plate is viewed from the second diagonal side. [Figure 22] This is a cross-sectional view of the area around the terminal block of a lighting fixture, including the height direction and the insertion direction of the terminal block. [Figure 23] This is a perspective view illustrating the locking mechanism of the top panel to the main body. [Figure 24] This is a perspective view illustrating the fastening of the top plate, mounting springs, main body, and frame using male screws. [Figure 25] This is a cross-sectional view illustrating the fastening of the top plate, mounting springs, main body, and frame using male screws. [Figure 26] This is a cross-sectional view of the second side of the integrated lighting fixture. [Figure 27] Figure 26 is an enlarged cross-sectional view of the area around the reflector. [Figure 28] This is a magnified cross-sectional view of the flange area of ​​the cover of a luminaire that is integrated into a single unit. [Modes for carrying out the invention]

[0009] The embodiments relating to this disclosure will be described in detail below with reference to the attached drawings. Note that if multiple embodiments or modifications are included below, it is intended from the outset that new embodiments may be constructed by appropriately combining their characteristic features. Furthermore, the following description will focus on the case where the light-emitting unit includes an LED (Light Emitting Diode), but the light-emitting unit may include an SMD (Surface Mount Device) type LED chip or a COB (Chip On Board) type LED chip. Alternatively, the light-emitting unit may include a bullet-shaped LED or a FLUX type LED. Alternatively, the light-emitting unit may include a semiconductor light-emitting element other than an LED. Alternatively, the light-emitting unit may include a solid-state light-emitting element such as an organic EL (Electro Luminescence) element or an inorganic EL element.

[0010] Furthermore, the lighting fixture of this disclosure may be fixed to a ceiling or the like with the central axis of the inner surface of the frame parallel to the vertical direction. Alternatively, the lighting fixture of this disclosure may be a universal type lighting fixture whose direction can be adjusted, and may be fixed to a ceiling or the like with the central axis of the inner surface of the frame inclined with respect to the vertical direction.

[0011] Furthermore, in the following embodiments, the light-emitting side in the height direction of the lighting fixture (coinciding with the height direction of the frame) is referred to as the first side, and the side opposite to the light-emitting side in the height direction of the lighting fixture is referred to as the second side.

[0012] Furthermore, in the following embodiments, the same reference numerals are used for identical components in the drawings, and redundant explanations are omitted. Also, multiple drawings include schematic diagrams, and the dimensional ratios such as length, width, and height of each component do not necessarily match between different drawings.

[0013] Furthermore, in the following embodiments, unless otherwise specified, the longitudinal direction refers to the longitudinal direction of the substrate 61 having a substantially rectangular plate shape, and the width direction refers to the width direction of the substrate 61 unless otherwise specified. The longitudinal direction and the width direction are orthogonal to each other. Also, the height direction refers to the height direction of the lighting fixture 1, and the orthogonal direction refers to the direction orthogonal to the height direction. The height direction coincides with the height direction of the frame 10, and in this embodiment, it also coincides with the thickness direction of the substrate 61. In addition, among the components described below, components that are not described in the independent claim representing the highest-level concept are optional components and are not essential components.

[0014] Figure 1 is a perspective view of a lighting fixture 1 according to one embodiment of the present disclosure. As shown in Figure 1, the lighting fixture 1 is a downlight and comprises a plurality of mounting springs 5, a frame 10, a main body 50, and a top plate 80. The main body 50 covers a portion of the first surface on the first side of a substrate 61 (see Figure 2). Light emitted from a light-emitting part 62 (see Figure 12A) mounted on another portion of the first surface of the substrate 61 is emitted to the first side from the opening on the first side of the frame 10.

[0015] The frame 10, the main body 50, the mounting springs 5, and the top plate 80 are stacked in this order from the first side to the second side and are fixed to each other and integrated as a single unit by a plurality of male screws 7, which are an example of fixing members. The number of mounting springs 5 ​​and the number of male screws 7 are the same. In this embodiment, the lighting fixture 1 has two mounting springs 5 ​​and two male screws 7.

[0016] Multiple mounting springs 5 ​​are installed at intervals in the circumferential direction, and in this embodiment, two mounting springs 5 ​​are installed at equal intervals in the circumferential direction. The mounting springs 5 ​​are made of steel plates such as stainless steel and are members that fix the lighting fixture 1 to the ceiling surface. The mounting springs 5 ​​have a bent portion 5b and have a leaf spring structure. The mounting springs 5 ​​are distorted so that the base portion 5a of the mounting springs 5 ​​extends in the height direction of the embedded hole (not shown) along the periphery of the embedded hole provided in the ceiling, and at least a part of the mounting springs 5 ​​presses the inner circumferential surface of the embedded hole radially outward. In this way, the lighting fixture 1 to which the mounting springs 5 ​​are attached is fixed around the embedded hole.

[0017] The mounting hole is, for example, a cylindrical hole provided in the ceiling and extending vertically. The lighting fixture 1 is fixed around the mounting hole by, for example, pushing the mounting spring 5 radially inward so that the tip of the mounting spring 5 is located on the second side in the height direction, and pushing the lighting fixture 1 into the mounting hole from the ceiling plate 80 side (room side). When the lighting fixture 1 is installed on a sloped ceiling that is inclined with respect to the horizontal plane, the mounting spring 5 is installed so that it extends in the axial direction of the mounting hole provided in the sloped ceiling. Note that the mounting structure for the lighting fixture to the ceiling can be any structure that can fix the lighting fixture to the ceiling, and does not have to include a mounting spring.

[0018] Figure 2 is an exploded perspective view of the lighting fixture 1. As shown in Figure 2, the lighting fixture 1 comprises a frame 10, a packing 20, a cover 30, a reflector 40, a main body 50, a mounting spring 5, a light source module 60, a terminal block 70, and a top plate 80. The lighting fixture 1 is stacked in the order of frame 10, packing 20, cover 30, reflector 40, main body 50, mounting spring 5, light source module 60 and terminal block 70, and top plate 80 from the first side to the second side in the height direction, and is integrated as a whole using a plurality of locking structures and a plurality of male screws 7, which will be described in detail below. In this embodiment, the lighting fixture 1 does not have any male screws other than the male screws 7 that fix and integrate the frame 10, main body 50, mounting spring 5, and top plate 80 with each other.

[0019] The following describes in detail the composition of each component (part) and the integrated structure of multiple components (parts). Figure 3A is a perspective view of the frame 10 when viewed from a second oblique side, and Figure 3B is a perspective view of the frame 10 when viewed from a first oblique side. As shown in Figures 2, 3A, and 3B, the frame 10 is a single integrated component made of metal or resin, and includes a cylindrical part 11, a frustoconical part 12, a flange 13, and multiple plate-like parts 14.

[0020] The frame 10 may be made of, for example, steel plate, die-cast, or injection-molded using resin material. The cylindrical portion 11 is positioned on the second side and defines a substantially circular opening on the second side, and has a cylindrical inner surface 11a. The frustoconical portion 12 is connected to the first side end of the cylindrical portion 11 and has a tapered outer surface 12a and a tapered inner surface 12b that widen towards the first side. The tapered outer surface 12a is, for example, composed of a cone outer surface, and the tapered inner surface 12b is, for example, composed of a cone inner surface. The frustoconical portion 12 includes a portion exposed to the living room side. The tapered inner surface 12b also serves to control light distribution and defines a substantially circular opening on the first side.

[0021] Multiple plate-like portions 14 are provided at circumferential intervals at the second end of the frame 10. In this embodiment, two plate-like portions 14 are arranged at the same circumferential interval at the second end of the frame 10. The plate-like portions 14 have a plate shape, extend outward in a substantially orthogonal direction, and extend radially outward from the frame 10. Each plate-like portion 14 is provided with a through hole 14a that penetrates through in the height direction in its center, and the through hole 14a is a screw hole. The flange 13 has an annular shape and extends radially outward from the first end of the frustoconical portion 12.

[0022] As shown in Figure 2, a packing 20 is placed on the flange 13 of the frame 10 from the second side. The packing 20 is placed on the end face of the flange 13 on the second side. The packing 20 is an annular member and is made of an elastic material such as rubber. The packing 20 is sandwiched between the flange 13 and the ceiling surface, ensuring airtightness between the flange 13 and the ceiling surface. As shown in Figure 2, the packing 20 has a plurality of plate-shaped ribs 21 that are spaced apart in the circumferential direction and extend in the radial direction. The radially outward ends of the ribs 21 contact the inner circumferential surface of the embedding hole, and as a result, the central axis of the frame 10 is prevented from shifting from the center of the embedding hole.

[0023] As shown in Figure 2, the packing 20 has a plurality of notches 22 located at intervals in the circumferential direction, and in this embodiment, there are two notches 22 located at the same interval in the circumferential direction. The number of notches 22 corresponds to the number of plate-like portions 14. The shortest distance between the notches 22 is greater than the width of the mounting spring 5. As shown in Figure 2, the packing 20 is positioned on the flange 13 such that the circumferential positions of the plurality of notches 22 coincide with the circumferential positions of the plurality of plate-like portions 14.

[0024] In this embodiment, the case where the flange 13 has an annular shape when viewed from above in the height direction has been described. Furthermore, the case where the frustoconical portion 12 is located on the second side of the flange 13 in the frame 10, and a packing 20 having a circular outer edge when viewed from above in the height direction is placed on the end face of the second side of the flange 13, has been described. However, the flange may have a rectangular, frame-shaped annular shape when viewed from above in the height direction. And the frustoconical portion may be located on the second side of the flange in the frame, and a packing having a rectangular outer edge when viewed from above in the height direction is placed on the end face of the second side of the flange,

[0025] As shown in Figure 2, the cover 30 is placed on top of the frame 10 from the second side. Figure 4A is a perspective view of the cover 30 when viewed from the second oblique side, and Figure 4B is a side view of the cover 30 when viewed from the radially outward side (side). As shown in Figures 4A and 4B, the cover 30 has a main body 31 and a flange 32 connected to the second end of the main body.

[0026] The main body 31 is made of a light-transmitting and light-diffusing resin, such as acrylic or polycarbonate, and has a portion exposed to the living room side to protect the light-emitting part 62. The main body 31 has a cylindrical shape with the first side surface closed. As shown in Figure 4B, the sealing part 34 that seals the opening on the first side of the cylindrical part 33 of the main body 31 has a dome shape that is convex to the first side, and the radial center is located closest to the first side. The main body of the cover may also have a Fresnel lens shape used in light-gathering types, in which case the main body is made of a transparent material.

[0027] The main body 31 has an outer diameter slightly smaller than the inner diameter of the cylindrical portion 11 of the frame 10. As shown in Figure 5, the main body 31 is fitted and installed inside the cylindrical portion 11 of the frame 10. The flange 32 has an outer diameter larger than the outer diameter of the cylindrical portion 11 of the frame 10. The flange 32 is placed on the second annular end of the cylindrical portion 11 when the main body 31 is fitted inside the cylindrical portion 11. The flange 32 is made of an elastic and compressible elastic material, such as an elastomer or a rubber material such as silicone, and acts as a packing, providing tolerances for insect intrusion and for components such as the reflector 40.

[0028] In this embodiment, the main body 31 and the flange 32 are integrally formed by two-color molding. By integrally forming them by two-color molding, the step of attaching the main body 31 and the flange 32 with adhesive or the like can be omitted. Of course, the main body 31 and the flange 32 may be formed as separate parts, and the flange 32 may then be attached to the main body 31 with adhesive or the like.

[0029] As shown in Figures 2 and 4A, the flange 32 has a plurality of notches 35 that open radially outward. The plurality of notches 35 are spaced apart in the circumferential direction, and in this embodiment, two notches 35 are spaced equally apart in the circumferential direction. The number of notches 35 corresponds to the number of plate-like portions 14. As shown in Figure 5, the plurality of plate-like portions 14 are fitted into the plurality of notches 35, and this fitting positions the cover 30 circumferentially relative to the frame 10.

[0030] As shown in Figure 2, the reflector 40 is placed on top of the cover 30 from the second side. The reflector 40 is made of an opaque resin material or a steel plate. Figure 6A is a perspective view of the reflector 40 when viewed from the second oblique side, and Figure 6B is a perspective view of the reflector 40 when viewed from the first oblique side. As shown in Figures 2, 6A, and 6B, the reflector 40 has a cone-shaped (frustoconical) body 41 and a plurality of ribs 42.

[0031] The main body 41 has a tapered outer surface (e.g., a conical outer surface) 43 that widens towards the first side, and a tapered inner surface (e.g., a conical inner surface) 45 that widens towards the first side. The tapered inner surface 45 is a reflective surface that reflects light from the light-emitting part 62, and is, for example, smoothly mirror-finished. The tapered inner surface 45 efficiently reflects light from the light-emitting part 62 towards the living room, controlling the light distribution from the light-emitting part 62.

[0032] Multiple ribs 42 are positioned at intervals in the circumferential direction, and in this embodiment, two ribs 42 are positioned at the same interval in the circumferential direction. Each rib 42 has a protruding structure and projects radially outward from the tapered outer surface 43 of the main body 41 and extends in the height direction. The radially outward end face 42a of the rib 42 extends substantially parallel to the height direction. The reflector 40 further has a projection 47 that projects to the second side from the second end face of the rib 42.

[0033] As shown in Figure 7, the reflector 40 is fitted into the cover 30 through the opening on the flange 32 side of the cover 30, with its flared end facing the first side. This fitting is done so that the circumferential position of the rib 42 substantially coincides with the circumferential position of the center of the through hole 14a of the plate-shaped portion 14 of the frame 10.

[0034] As shown in Figure 2, the main body 50 is superimposed on the reflector 40 from the second side. Figure 8 is a perspective view of the main body 50 from the oblique second side. As shown in Figure 8, the main body 50 is made of steel plate and has a through hole 51 through which the reflector 40 passes. The through hole 51 includes a cylindrical hole 52 and a plurality of rib insertion holes 53 that communicate with the cylindrical hole 52 and extend radially outward from the cylindrical hole 52. In this embodiment, it includes two rib insertion holes 53. The two rib insertion holes 53 are opposite each other in the radial direction of the cylindrical hole 52. The rib insertion holes 53 have a planar shape that corresponds to the planar shape of the rib 42.

[0035] As shown in Figure 9, with the pair of ribs 42 overlapping in the height direction in the pair of rib insertion holes 53, the main body 50 is brought closer to the reflector 40 from the second side of the reflector 40. Then, as shown in Figure 10, the pair of ribs 42 are fitted into the pair of rib insertion holes 53. The fitting of the pair of ribs 42 into the pair of rib insertion holes 53 makes it impossible for the main body 50 to move relative to the reflector 40, and thus it is positioned relative to the reflector 40.

[0036] As shown in Figure 8, the main body 50 has a plurality of mounting portions 54 on which the flat mounting portion 5d (see Figure 2) of the mounting spring 5 is placed, and in this embodiment, there are two mounting portions 54. The two mounting portions 54 are positioned opposite each other in the width direction of the substrate 61 (see Figure 11A), which has a substantially rectangular plate shape. The main body 50 further has a pair of plate-shaped ribs 55 that project from each mounting portion 54 to the second side. The pair of plate-shaped ribs 55 are spaced apart in the longitudinal direction and face each other, and extend in a direction including the width direction and the height direction. Through holes 57 are provided in the mounting portions 54, and through holes 5e (see Figure 2) are also provided in the mounting portion 5d of the mounting spring 5.

[0037] As shown in Figure 2, the mounting spring 5 is superimposed on the second side of the main body 50. Specifically, the mounting portion 5d is placed on the mounting portion 54 such that the through hole 5e of the mounting portion 5d coincides in the height direction with the through hole 57 of the mounting portion 54, and both longitudinal side edges of the mounting portion 5d abut against the pair of plate-shaped ribs 55. The mounting portion 5d of the mounting spring 5 has a pair of ribs 5c (see Figure 1) that extend longitudinally on both longitudinal sides. This pair of ribs 5c engages in the width direction with the pair of plate-shaped ribs 55 when the mounting portion 5d is positioned at the mounting location on the mounting portion 54. The pair of plate-shaped ribs 55 act as stoppers to prevent the mounting spring 5 from rotating relative to the main body 50.

[0038] Next, as shown in Figure 2, the light source module 60 is brought closer to the main body 50 in the height direction from the second side of the main body 50 and brought into contact with the second end face of the reflector 40 that protrudes from the main body 50. Figure 11A is a perspective view of the light source module 60 as seen from the first oblique side, and Figure 11B is a perspective view of the light source module 60 as seen from the second oblique side.

[0039] As shown in Figure 11A, the light source module 60 includes a substrate 61, a light-emitting unit 62 mounted on the first surface 61a of the substrate 61, and a power supply unit 63 mounted on the second surface 61b of the substrate 61. In this embodiment, the light-emitting unit 62 includes a plurality of SMD (Surface Mount Device) type LED chips 62a, and the plurality of LED chips 62a are arranged, for example, at equal intervals on the same circle.

[0040] The power supply unit 63 includes a plurality of electronic components 63a, which include, for example, one or more capacitors and one or more coils. The power supply unit 63 converts AC power to DC power and steps down the voltage to a predetermined voltage.

[0041] The light-emitting unit 62 is mounted on the first longitudinal side of the first surface 61a on the first side in the height direction of the substrate 61. Also, as shown in Figure 11B, the power supply unit 63 is mounted on the second longitudinal side of the second surface 61b on the second side in the height direction of the substrate 61.

[0042] In this embodiment, the light-emitting unit 62 is positioned at a longitudinal distance from the power supply unit 63. The power supply unit 63 is not positioned on the opposite side of the area where the light-emitting unit 62 is located, thereby improving the heat dissipation of the heat generated by the LED chip 62a. Reflow components such as ceramic capacitors and ICs may or may not be mounted on the first surface 61a of the substrate 61 at a longitudinal distance from the light-emitting unit 62.

[0043] The substrate 61 has a pair of through holes 65 on its first longitudinal side. The pair of through holes 65 are spaced apart in the width direction of the substrate 61. As shown in Figure 10, with a pair of protrusions 47 of the reflector 40 overlapping the pair of through holes 65 of the light source module 60 in the height direction, the light source module 60 is brought closer to the reflector 40 from the second side. Then, as shown in Figure 12, the pair of protrusions 47 are fitted into the pair of through holes 65. The fitting of the pair of protrusions 47 into the pair of through holes 65 makes it impossible for the light source module 60 to move relative to the reflector 40, thus positioning it relative to the reflector 40.

[0044] As shown in Figure 13, the main body 50 has a bottom plate portion 56 and a pair of side wall portions 9 that protrude from both ends of the bottom plate portion 56 in the width direction (coinciding with the width direction of the substrate 61) to the second side in the height direction. The pair of side wall portions 9 also have a pair of first locking pieces 58 and a pair of second locking pieces 59 that are spaced apart in the longitudinal direction of the main body 50 (coinciding with the longitudinal direction of the substrate 61).

[0045] The pair of first locking pieces 58 are at the same height and face each other in the width direction. The pair of second locking pieces 59 are also at the same height and face each other in the width direction. As shown in Figures 8 and 13, the pair of first locking pieces 58 and the pair of second locking pieces 59 are foldable inward in the width direction of the main body 50 and can be folded back.

[0046] As shown in Figure 14, after making the light source module 60 immobile relative to the reflector 40, the pair of first locking pieces 58 are bent inward in the width direction of the main body 50 so as to pivot in a substantially orthogonal direction. Then, the pair of first locking pieces 58 press the first side in the longitudinal direction of the second surface 61b of the substrate 61 against the first side in the height direction. After making the light source module 60 immobile relative to the reflector 40, the pair of second locking pieces 59 are bent inward in the width direction of the main body 50 so as to displace the height position of their tips towards the first side. Then, the pair of second locking pieces 59 press the second side in the longitudinal direction of the second surface 61b of the substrate 61 against the first side in the height direction.

[0047] In this way, even if stress is applied to the side of the light source module 60 away from the reflector 40 due to lifting of the main body 50, excessive stress is less likely to be applied to the substrate 61, thereby suppressing bending of the substrate 61.

[0048] Figure 15 is a plan view of the lighting fixture 1, showing the cover 30, the reflector 40, and the first surface 61a of the substrate 61 as viewed from the first side in the height direction. After making the light source module 60 immovable relative to the reflector 40, in the plan view shown in Figure 15, the center of the circular opening 48 on the first side of the reflector 40 and the center of the light-emitting part 62 substantially coincide, and the center of the opening 48 and the center of the light-emitting part 62 substantially overlap in the height direction.

[0049] Next, the configuration of the terminal block 70 and its positioning relative to the main body 50 will be described. Figure 16A is a perspective view of the terminal block 70 as seen from the side connected to the power supply unit 63 and from the second oblique side, and Figure 16B is a perspective view of the terminal block 70 as seen from the opposite side from the side connected to the power supply unit 63 and from the second oblique side. Figure 16C is a perspective view of the terminal block 70 as seen from the opposite side from the side connected to the power supply unit 63 and from the first oblique side.

[0050] The terminal block 70 is a component that electrically connects AC power from the commercial power supply to the power supply unit 63. As shown in Figure 16A, the terminal block 70 has a pair of blade-shaped terminals 71 that are spaced apart in the width direction (corresponding to the width direction of the circuit board 61).

[0051] As shown in Figure 16B, the terminal block 70 has a pair of first through-holes 72 and a pair of second through-holes 73 that are spaced apart in the height direction. The pair of first through-holes 72 are spaced apart in the width direction and are at the same height. Similarly, the pair of second through-holes 73 are spaced apart in the width direction and are at the same height. For example, a ground wire of a commercial power supply (not shown) is inserted into one of the pair of first through-holes 72 and electrically connected to one of the blade-shaped terminals 71, while a commercial power supply wire is electrically connected to the other of the pair of first through-holes 72 and electrically connected to the other blade-shaped terminal 71.

[0052] Furthermore, one of the pair of second through holes 73 is a hole through which wiring electrically connected to the ground wire passes, and the other of the pair of second through holes 73 is a hole through which wiring electrically connected to the wire passes. The pair of second through holes 73 are used when installing multiple lighting fixtures 1 in a building and supplying AC power from the commercial power source to other lighting fixtures 1 via lighting fixture 1. As shown in Figure 16C, the terminal block 70 has a pair of protrusions 74 that project to the first side.

[0053] Figure 17 is a perspective view of the terminal block cover 90. The terminal block cover 90 covers the commercial power supply connection side of the terminal block 70 and has thin-walled sections corresponding to the insertion holes 72, 73 and the tool insertion hole 79. Although not described in detail, the tool insertion hole 79 is a hole through which a tool such as a flathead screwdriver is inserted when electrically connecting external wiring to the blade-shaped terminal 71 or when detaching wiring from the terminal block 70. By inserting the tip of a tool into the tool insertion hole 79, the gap between the pair of metal parts that grip the wiring (ground wire and wire) is temporarily widened, making it possible to connect or detach the wiring.

[0054] The terminal block may have any internal structure that allows the ground wire and wires on the AC power supply side to be electrically connected to a pair of blade-shaped terminals 71, and any known structure may be used to make such electrical connections. The terminal block cover 90 is made of a rubber material such as elastomer or silicone. When connecting external wiring, the wiring penetrates a portion of the thin-walled part of the terminal block cover 90. The terminal block cover 90 prevents foreign matter released from the heat insulating material from entering the terminal block 70.

[0055] As shown in Figure 16B, the terminal block 70 has three protruding ridges 77a, 77b, and 77c on the second side surface and both side surfaces. Also, as shown in Figure 17, the terminal block cover 90 has three through holes 91a and 91c corresponding to the protruding ridges 77a, 77b, and 77c. As shown in Figure 18, the terminal block cover 90 is attached to the terminal block 70 by inserting the three protruding ridges 77a, 77b, and 77c through the three through holes 91a and 91c. Note that the lighting fixture of this disclosure does not necessarily have a terminal block cover.

[0056] Next, the positioning of the terminal block 70 relative to the main body 50 will be described. As shown in Figure 13, the main body 50 has a pair of through holes 46 on the second side in the longitudinal direction. On the other hand, the terminal block 70 has a pair of protrusions 74 that project outwards to the first side. As shown in Figure 19, these pair of protrusions 74 are fitted into the pair of through holes 46 from the second side, and as shown in Figure 20, each of the pair of blade-shaped terminals 71 of the terminal block 70 is inserted into the pair of blade-receiving parts 69 of the power supply unit 63. Each blade-receiving part 69 includes a metal clamping part that holds the blade-shaped terminal 71. In this way, the terminal block 70 is positioned relative to the main body 50.

[0057] Next, as shown in Figure 2, the steel top plate 80 is brought closer to the main body 50 in the height direction from the second side of the main body 50, and the top plate 80 is placed on top of the main body 50. Then, the top plate 80 is positioned on the terminal block 70 and fixed to the main body 50. Figure 21A is a perspective view of the top plate 80 when viewed from the first oblique side, and Figure 21B is a perspective view of the top plate 80 when viewed from the second oblique side. As shown in Figure 21A, the top plate 80 is a cover member that covers the second side in the height direction and at least a part of the side of the light source module 60.

[0058] The top plate 80 includes a first top plate section 81, a second top plate section 82, and a third top plate section 83. The first top plate section 81 covers the first longitudinal side of the light source module 60 and is located on the first height side, extending in a substantially orthogonal direction. The second top plate section 82 connects to the second longitudinal side of the first top plate section 81. The second top plate section 82 is inclined so that it moves towards the second height side as it moves towards the second longitudinal side. The third top plate section 83 also connects to the second longitudinal side of the second top plate section 82 and extends in a substantially orthogonal direction.

[0059] As a result, as shown in Figure 21B, the height of the top plate 80 is higher on the second side in the longitudinal direction than on the first side. Therefore, the height of the side walls 84a of the top plate 80 is lower on the pair of side walls 84a on the first side in the longitudinal direction than on the pair of side walls 84b on the second side in the longitudinal direction, and the space that the top plate 80 accommodates is larger on the second side in the longitudinal direction than on the first side.

[0060] The top plate 80 has a pair of plate-like portions 85 that extend outward in the width direction from the first end of a pair of side wall portions 84a. The plate-like portions 85 extend in a substantially perpendicular direction. Each plate-like portion 85 has a through hole 88. The top plate 80 has a recess 98 for fixing the terminal block 70 to the second side wall 97 in the longitudinal direction. The top plate 80 also has a pair of protrusions 86 that project from the side wall 97 toward the first side.

[0061] Figure 22 is a cross-sectional view of the lighting fixture 1 around the terminal block 70, including the height direction and the insertion direction of the terminal block 70. As shown in Figure 22, the terminal block 70 has a groove 95 extending in the width direction on the second end face, and the top plate 80 has a plate-like portion 96 that fits into the groove 95. Also, as shown in Figure 8, the main body 50 has a pair of through holes 39 on the second side in the longitudinal direction, having a planar shape (planar shape when viewed from the height direction) that corresponds to the planar shape (planar shape when viewed from the height direction) of a pair of protrusions 86. The through holes 39 may be slit-shaped, and the protrusions 86 may have a plate shape.

[0062] As shown in Figure 22, the plate-shaped portion 96 is fully inserted into the groove 95 of the terminal block 70, which is positioned relative to the main body 50, and as shown in Figure 23, the pair of protruding portions 86 are inserted into the pair of through holes 39. Then, as shown in Figure 19, the protruding portion 86a of the protruding portion 86 that protrudes from the through hole 39 to the first side is crimped and folded back in a substantially perpendicular direction, thereby firmly fixing the top plate 80 to the main body 50. The insertion of the plate-shaped portion 96 into the groove 95 of the terminal block 70 allows the terminal block 70 to be positioned on the top plate 80.

[0063] When the top plate 80 is fixed to the main body 50 in this manner, as shown in Figure 24, the plate-shaped portion 85 of the top plate 80 overlaps from the second side with the flat mounting portion 5d (see Figure 2) of the mounting spring 5 which is placed on the mounting portion 54 (see Figure 8) of the main body 50. Furthermore, when the mounting portion 54 is restrained by a pair of plate-shaped ribs 55 with the through hole 5e (see Figure 2) of the mounting portion 5d overlapping with the through hole 57 (see Figure 8) of the mounting portion 54, the through hole 88 of the plate-shaped portion 85 of the top plate 80 also overlaps with the through hole 5e and the through hole 57 in the height direction, and furthermore, it also overlaps with the through hole 14a of the frame 10 in the height direction.

[0064] As shown in Figures 24 and 25, a single, inseparable male screw 7 is tightened from the second side into the four through holes 88, 5e, 57, and 14a that overlap in the height direction. Since the through hole 14a, located on the first side, is a screw hole, tightening this male screw 7 fixes the top plate 80, mounting spring 5, main body 50, and frame 10 together, integrating them as a single unit. Note that the tightening of the male screw 7 and the crimping of the protruding portion 86a in a substantially perpendicular direction can be performed in either order.

[0065] As described above, the packing 20 is positioned on the flange 13 such that the circumferential positions of the multiple notches 22 coincide with the circumferential positions of the multiple plate-shaped portions 14. When the top plate 80, mounting spring 5, main body 50, and frame 10 are fixed in this state, as shown in Figure 1, a part of the mounting spring 5 fits into the notches 22 of the packing 20, making it virtually impossible for the packing 20 to rotate relative to the mounting spring 5.

[0066] As described above, the lighting fixture 1 is integrated into a single unit by the positioning structure between the multiple two components and the fixing of the top plate 80, mounting spring 5, main body 50, and frame 10 by the male screws 7.

[0067] Figure 26 is a cross-sectional view of the second side of the integrated lighting fixture 1, and Figure 27 is an enlarged cross-sectional view of the area around the reflector 40 in Figure 26. Figure 28 is an enlarged cross-sectional view of the area around the flange 32 of the cover 30 of the integrated lighting fixture 1. As shown in Figure 26, the tall power supply unit 63 is housed in the space enclosed by the second top plate portion 82, the third top plate portion 83, and the substrate 61.

[0068] Furthermore, the cone-shaped reflector 40 contacts the first surface 61a of the substrate 61 of the light source module 60 so that its first edge pushes upward. The second surface of the light source module 60, opposite to the first surface on which the light-emitting unit 62 is mounted, is flat. The first surface of the first top plate 81 is in wide contact with this flat surface.

[0069] The flange 32 of the cover 30 is elastic and functions as a packing, and is compressible. As shown in Figures 27 and 28, the flange 32 is sandwiched and compressed between the frame 10 and the main body 50 by fixing the top plate 80, mounting spring 5, main body 50 and frame 10 using the male screw 7 described above. This compression of the flange 32 maintains a state in which the reflector 40, which is located inside the cover 30, is always pushing the substrate 61 of the light source module 60 upward to the second side. The compression of the flange 32 can absorb tolerance variations of the reflector 40, and the substrate 61 and the first top plate portion 81 of the top plate 80 can be brought into close contact.

[0070] As a result, the heat emitted from the light-emitting part 62 mounted on the first surface portion located on the opposite side of the second surface portion that is in close contact with the first top plate portion 81 can be transferred over a wide area to the third top plate portion 83 via the second top plate portion 82, as shown by arrow A in Figure 26, and the heat can be dissipated to the outside in the directions shown by arrows B1, B2, and B3. It is preferable to make the top plate 80 out of a metal with high heat dissipation properties such as aluminum, as this allows for efficient heat dissipation. In addition, since the flange 32 is sandwiched and compressed between the frame 10 and the main body 50, it is possible to reliably prevent insects and foreign objects from entering the inside of the lighting fixture 1 from between the frame 10 and the main body 50, thereby realizing a lighting fixture 1 with excellent insect-resistant properties.

[0071] As described above, the lighting fixture 1 comprises a main body 50 that covers a portion of the first surface 61a on the light-emitting side (first side) of the substrate 61 on which the light-emitting unit 62 that emits light is mounted; a frame 10 having inner circumferential surfaces (cylindrical inner surface 11a and tapered inner surface 12b) that define a portion of the light propagation path; and a top plate 80 that covers at least a portion of the second surface 61b on the side opposite to the light-emitting side (second side) in the thickness direction of the substrate 61. The frame 10, main body 50, and top plate 80 are stacked in the order of frame 10, main body 50, and top plate 80. The lighting fixture 1 also includes male screws (integral, indivisible fixing members) 7 for fixing the frame 10, main body 50, and top plate 80 to each other.

[0072] According to this disclosure, the main components, the frame 10, the main body 50, and the top plate 80, can be stacked in the same direction and fixed together using an inseparable male screw 7. Therefore, the main components can be integrated by stacking them from the same direction, making it possible to realize a lighting fixture 1 that is excellent for mass production.

[0073] Furthermore, the device may also include a mounting spring 5 that has a mounting portion (clamping portion) 5d that is sandwiched between the main body 50 and the top plate 80, and is fixed to the main body 50 and the top plate 80 with a male screw 7.

[0074] With this configuration, the mounting spring 5 can also be integrated using the male screw 7 that securely fastens the frame 10, the main body 50, and the top plate 80 together. Therefore, there is no need to add fixing members such as screws, which further improves mass production efficiency.

[0075] Furthermore, the reflector 40 may have a tapered inner surface (inner surface portion) 45 that reflects light and a rib (locking portion for the main body) 42. Also, the frame 10, reflector 40, and main body 50 may be stacked in the order of frame 10, reflector 40, and main body 50. The main body 50 may also have a rib insertion hole (locking portion for the reflector) 53 that prevents the reflector 40 from rotating relative to the main body 50 by locking the rib 42.

[0076] This configuration allows the reflector 40 to be positioned relative to the main body 50 without the need to add fixing members such as screws. Therefore, the reflector 40 can also be integrated without the need for additional fixing members, further improving mass production efficiency.

[0077] Furthermore, the reflector 40 may have a protrusion (substrate locking portion) 47 at the end opposite to the light emission side. Also, the substrate 61 may have a through hole (reflector locking portion) 65 that prevents the reflector 40 from rotating relative to the substrate 61 by locking the protrusion 47.

[0078] This configuration allows the reflector 40 to be positioned relative to the substrate 61 without adding fixing members such as screws. Therefore, the substrate 61 and, consequently, the light source module 60 can be integrated without adding fixing members, further improving mass production efficiency.

[0079] Furthermore, the lighting fixture 1 may include a cover 30 that includes a flange 32 having a notch 35 in a part of the circumferential direction at the end opposite to the light-emitting side. The frame 10 may also have a plate-like portion 14 that protrudes outward in a direction perpendicular to the height direction at a part of the circumferential direction at the end opposite to the light-emitting side and includes a through hole (fixing portion) 14a for fixing a male screw 7. The cover 30 may also be placed on top of the frame 10 from the light-emitting side. Furthermore, the rotation of the cover 30 relative to the frame 10 may be prevented by fitting the plate-like portion 14 into the notch 35.

[0080] This configuration allows the male screw 7 to be easily and securely fixed to the frame 10 with a simple structure. Furthermore, the plate-shaped part 14 used to fix the frame 10 to the main body 50 and the top plate 80 can be used to prevent the cover 30 from rotating relative to the frame 10, allowing the cover 30 to be positioned on the frame 10 without the need for additional fixing members. Thus, not only can a lighting fixture 1 with a simple structure be realized, but the lighting fixture 1 can be integrated with fewer fixing members, resulting in a stylish and mass-producible lighting fixture 1.

[0081] Furthermore, the lighting fixture 1 may be equipped with a terminal block 70 for supplying power from a power source to the light-emitting unit 62. The terminal block 70 may also be fixed by being sandwiched between the main body 50 and the top plate 80.

[0082] With this configuration, the terminal block 70 can be fixed to the main body 50 and the top plate 80 without adding any fixing members. Therefore, a lighting fixture 1 with excellent mass-producibility can be realized.

[0083] Furthermore, the terminal block 70 may have a protruding portion (locking portion for the main body) 74 on the light-emitting side and a groove (locking portion for the top plate) 95 on the opposite side from the light-emitting side. The main body 50 may also have a through hole (locking portion for the terminal block) 46 that prevents the terminal block 70 from rotating relative to the main body 50 by locking the protruding portion 74. The top plate 80 may also have a plate-like portion (locking portion for the terminal block) 96 that prevents the terminal block 70 from rotating relative to the top plate 80 by locking the groove 95.

[0084] With this configuration, the terminal block 70 can be positioned on the main body 50 and the top plate 80.

[0085] Furthermore, the main body 50 may have locking pieces (substrate warping suppression parts) 58, 59 located on the opposite side of the light-emitting side of the substrate 61 to suppress warping on the opposite side of the light-emitting side of the substrate 61.

[0086] If the longitudinal dimension of the circuit board is long and the power supply mounting area on the board protrudes perpendicularly from the reflector, and there is no structure to suppress the curvature of the circuit board, the circuit board is prone to curving when a large stress is applied to the power supply mounting area on the circuit board due to lifting of the lighting fixture, etc.

[0087] In contrast, with this configuration, the substrate 61 can be restrained to the light-emitting side by the locking pieces 58 and 59. Therefore, even if the longitudinal dimension of the substrate 61 is long and the mounting portion of the power supply unit 63 on the substrate 61 protrudes perpendicularly from the reflector 40, as in this embodiment, the curvature of the substrate 61 can be suppressed.

[0088] Furthermore, the main body 50 may have a through hole (locking part for top plate) 39 for locking the top plate 80. Also, the top plate 80 may have a protruding part (locking part for main body) 86 for locking the main body 50.

[0089] With this configuration, the top plate 80 can be secured to the main body 50 by a structure other than fixing with the male screw 7, and the top plate 80 can be double-secured to the main body 50. Therefore, it is possible to reliably prevent the top plate 80 from detaching from the main body 50.

[0090] Alternatively, the fixing member may be a male screw 7, and the top plate 80, the main body 50, and the frame 10 may each have through holes 88, 57, and 14a. The male screw 7 may then be inserted through the through holes 88, 57, and 14a of the top plate 80, the main body 50, and the frame 10 to fix them in place.

[0091] According to this configuration, the main components, the top plate 80, the main body 50, and the frame 10, can all be fixed to each other using the same male screw 7. The through holes in the top plate, main body, and frame may all be through holes without female threads, and the top plate, main body, and frame may be fixed together using male screws (bolts) and nuts. Alternatively, the top plate, main body, and frame may be fixed using other well-known fastening methods.

[0092] Furthermore, the fixing member is a male screw 7 having a shaft portion on which a screw is provided, and there does not need to be any other male screw besides the male screw 7.

[0093] In this configuration, there are no male screws other than the male screws 7 that secure the top plate, main body, and frame together in pairs. Therefore, the number of assembly steps can be significantly reduced, enabling automated assembly of the lighting fixture 1 and achieving extremely high mass production efficiency. Furthermore, since there are no male screws other than the male screws 7 that secure the top plate 80, main body 50, and frame 10 together in pairs, the lighting fixture 1 can be made simple and stylish, resulting in a lighting fixture 1 with excellent design.

[0094] This disclosure is not limited to the embodiments and their modifications, and various improvements and modifications are possible within the scope of the claims of this application and their equivalents.

[0095] For example, in the lighting fixture of this disclosure, the two locking parts that lock together may be configured in any way that allows them to lock together. For example, if one locking part is a projection and the other locking part that locks to it is a through hole, a bottomed hole, a groove, or a notch, the structures of the locking parts may be reversed, or one locking part may be a through hole, a bottomed hole, a groove, or a notch and the other locking part that locks to it may be a projection.

[0096] Furthermore, the above embodiment described a case in which the top plate 80 is locked to the main body 50 with a locking structure, and there are no male screws other than the male screws 7 that fix the top plate, main body, and frame together as a pair. However, instead of locking the top plate to the main body with a locking structure, the top plate may be fixed to the main body with screws.

[0097] Furthermore, in the lighting fixture of this disclosure, if the amount of heat generated from the light-emitting part is large, a heat transfer material such as grease may be applied to the surface where the substrate and the top plate come into contact. In addition, the heat dissipation of the lighting fixture may be improved by integrally configuring or attaching heat dissipation fins to the second side of the top plate, particularly the second side of the first top plate portion (the side opposite the light-emitting part). [Explanation of symbols]

[0098] 1 Lighting fixture, 5 Mounting spring, 5d Mounting part of mounting spring, 5e Through hole of mounting part, 7 Male screw, 10 Frame, 13 Frame flange, 14 Plate-shaped part of frame, 14a Through hole of frame, 20 Packing, 22 Notch of frame, 30 Cover, 31 Main body, 32 Flange, 35 Notch of flange, 39 Through hole of main body, 40 Reflector, 42 Rib of reflector, 46 Through hole of main body, 47 Protruding part of reflector, 50 Main body, 53 Rib insertion hole of main body, 54 Mounting part of main body, 55 Rib of main body, 58 First locking piece, 59 Second locking piece, 60 Light source module, 61 Substrate, 61a First surface of substrate, 61b The second side of the circuit board, 62 light-emitting part, 62a LED chip, 63 power supply unit, 63a electronic component, 65 through hole in the circuit board, 69 blade receiving part, 70 terminal block, 71 terminal, 74 protruding part of the terminal block, 80 top plate, 81 first top plate part, 82 second top plate part, 83 third top plate part, 85 plate-like part of the top plate, 86 protruding part of the top plate, 86a protruding part, 88 through hole in the plate-like part of the top plate, 90 terminal block cover, 95 groove in the terminal block, 96 plate-like part of the top plate.

Claims

1. A main body that covers a portion of the first surface on the light-emitting side of the substrate on which the light-emitting part is mounted, A frame having an inner circumferential surface portion that defines a part of the light propagation path, The substrate comprises a top plate that covers at least a portion of the second surface opposite to the light-emitting side in the thickness direction of the substrate, The frame, the main body, and the top plate are stacked in that order. The frame, the main body, and the top plate are provided with an integral and inseparable fixing member for fixing them to each other. A lighting fixture having a clamping portion that is sandwiched between the main body and the top plate, and a mounting spring that is fixed to the main body and the top plate by the fixing member.

2. The reflector plate has an inner circumferential surface portion that reflects the aforementioned light and a locking portion for the main body, The frame, the reflector, and the main body are stacked in that order. The lighting fixture according to claim 1, wherein the main body has a locking portion for a reflector that locks the main body locking portion to prevent the reflector from rotating relative to the main body.

3. The reflector has a substrate locking portion at the end opposite to the light emission side, The lighting fixture according to claim 2, wherein the substrate has a reflector locking portion that locks the substrate locking portion to prevent the reflector from rotating relative to the substrate.

4. A main body that covers a part of the first surface on the light-emitting side of a substrate on which a light-emitting unit that emits light is mounted, A frame having an inner circumferential surface portion that defines a part of the light propagation path, The substrate comprises a top plate that covers at least a portion of the second surface opposite to the light-emitting side in the thickness direction of the substrate, The frame, the main body, and the top plate are stacked in that order. The frame, the main body, and the top plate are provided with an integral and inseparable fixing member for fixing them to each other. The cover includes a flange having a notch in a part of the circumferential direction at the end opposite to the light emission side, The frame has a plate-like portion that protrudes outward in a direction perpendicular to the height direction and includes a fixing portion for fixing a fixing member, at a part of the circumferential direction of the end opposite to the light-emitting side, The cover is placed on top of the frame from the light-emitting side of the frame, A lighting fixture in which the plate-like portion is fitted into the notch, thereby preventing the cover from rotating relative to the frame.

5. It is equipped with a terminal block for supplying power from the power source to the light-emitting section, The lighting fixture according to claim 1, wherein the terminal block is sandwiched and fixed between the main body and the top plate.

6. The terminal block has a locking portion for the main body on the light emission side and a locking portion for the top plate on the side opposite to the light emission side. The main body has a terminal block locking portion that locks the main body locking portion to prevent the terminal block from rotating relative to the main body, The lighting fixture according to claim 5, wherein the top plate has a terminal block locking portion that locks the top plate locking portion to prevent the terminal block from rotating relative to the top plate.

7. The lighting fixture according to claim 1, wherein the main body has a substrate warping suppression portion located on the opposite side of the substrate from the light-emitting side and suppressing warping of the substrate on the opposite side from the light-emitting side.

8. The main body has a locking part for the top plate that locks the top plate, The lighting fixture according to claim 1, wherein the top plate has a locking portion for the main body that locks the main body.

9. The aforementioned fixing member is a screw, Each of the above-mentioned top plate, the above-mentioned main body, and the above-mentioned frame has a through hole, The lighting fixture according to claim 1, wherein the screws are inserted through the through holes in the top plate, the main body, and the frame, respectively, and fixed in place.

10. The fixing member is a male screw having a shaft portion on which a screw is provided. The lighting fixture according to claim 1, wherein the male screw is not present anywhere other than the fixing member.

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