Lighting fixtures

Abstract

To provide a lighting fixture that is easily adaptable to adapters of different heights, allowing for greater flexibility in component placement and easier mass production. [Solution] The lighting fixture 1 comprises a fixture body 10 with a through hole in the center, a substrate 15 arranged around the through hole 11 of the fixture body 10, a plurality of light-emitting elements 30 mounted on the lower surface 15c of the substrate 15, an adapter 80 attached to an adapter mounting part 95 provided on the ceiling, and a first hooking part 82 that can be selectively hooked onto the adapter 80 and a second hooking part 83 located on the light-emitting side of the first hooking part 82. When either the first hooking part 82 or the second hooking part 83 is hooked onto the adapter 80, the fixture body 10 becomes unable to detach from the adapter 80. The first holder 86 on which the first hooking part 82 is provided and the second holder 87 on which the second hooking part 83 is provided are constructed as separate parts from each other.

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture.

Background Art

[0002] Conventionally, as a lighting fixture, there is a ceiling light described in Patent Document 1. This ceiling light includes a fixture main body having a through hole in a central portion, a substrate fixed to the fixture main body and having a through hole in a central portion, a plurality of LEDs mounted on the substrate, and a diffusion cover that covers the light exit side of the plurality of LEDs and is substantially circular in plan view when viewed from the height direction.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of Invention

Problem to be Solved by the Invention

[0004] A lighting fixture includes an adapter that is attached to a fixture attachment portion provided on a ceiling of a building, and is attached to the ceiling by locking a locking portion of a lighting main body to a locking portion of the adapter. Against this background, if a lighting fixture that can be easily applied to adapters with different heights can be realized, the height of the adapter can be increased, so that precision components can be arranged inside the adapter, and the degree of freedom in arranging precision components can be increased. In addition, if a lighting fixture that can be easily applied to adapters with different heights can be realized, a large design change of the lighting fixture to adapt to the adapter is not required, and mass productivity of the lighting fixture is easily improved. Therefore, an object of the present disclosure is to provide a lighting fixture that is easily applicable to adapters with different heights, and easily increases the degree of freedom in component arrangement and mass productivity.

Means for Solving the Problem

[0005] To solve the above problems, the lighting fixture according to this disclosure comprises a fixture body having a through hole in the center, a substrate arranged around the through hole of the fixture body, a plurality of light-emitting elements mounted on one side of the substrate, an adapter attached to an adapter mounting part provided on the ceiling, a first hooking part that can be selectively hooked onto the adapter, and a second hooking part located on the light-emitting side of the first hooking part, wherein when one of the first hooking part and the second hooking part is hooked onto the adapter, the fixture body becomes unable to detach from the adapter, and the first holder provided with the first hooking part and the second holder provided with the second hooking part are configured as separate parts. [Effects of the Invention]

[0006] The lighting fixture described herein is easily adaptable to adapters of different heights, and allows for greater flexibility in component placement and easier mass production. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of a lighting fixture according to one embodiment of the present disclosure, as seen from a diagonally downward angle. [Figure 2] This is a perspective view of the lighting fixture with the diffuser cover removed, seen from a diagonal downward angle. [Figure 3] This is a perspective view of the lighting fixture from a diagonal downward angle, with the power supply cover, which further protects the electronic components, removed from the state shown in Figure 2. [Figure 4] This is a perspective view showing the state after the translucent resin sheet covering the substrate has been removed from the state shown in Figure 3. [Figure 5] This is a perspective view showing the state after the reflective sheet has been removed from the state shown in Figure 4. [Figure 6] This is a plan view of a circuit board on which multiple power supply components, multiple first light-emitting elements, and second light-emitting elements are mounted, as seen from below in the height direction. [Figure 7] This is a perspective view of the first protective cover, taken from a diagonal downward angle in the height direction. [Figure 8]This is a perspective view of the first protective cover, taken from an oblique upward angle in the height direction. [Figure 9] This perspective view is achieved assuming that the second protective cover is no longer visible from the state shown in Figure 2. [Figure 10] This is a perspective view of the movement restricting member, seen from an oblique angle above. [Figure 11] This is a perspective view of the second protective cover, seen from a diagonal downward angle. [Figure 12] This is a perspective view of the second protective cover, seen from an oblique angle above. [Figure 13] This is a perspective view illustrating the relative position of some of the power lines to the second protective cover. [Figure 14] This is a cross-sectional view of the area around the adapter of a lighting fixture attached to the adapter mounting section, and it is a cross-sectional view including the central axis of the lighting fixture. [Figure 15] This is an enlarged cross-sectional view of the area around the first and second hooking parts in Figure 14. [Modes for carrying out the invention]

[0008] 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. In the following embodiments, the same reference numerals are used for the same components in the drawings, and redundant explanations are omitted. Furthermore, 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. The numerous components described below include several optional components that are not essential. Also, in this specification, the term "omitted" may be used to allow for manufacturing tolerances (manufacturing variations), and may be used to describe the general shape of components, etc.

[0009] In the following description, when terms related to the vertical direction such as down, up, lower side, and upper side are used, they indicate the direction when the lighting fixture 1 is installed on the ceiling. Also, when the height direction is mentioned in the following description, that height direction refers to the height direction of the lighting fixture 1, and when the orthogonal direction is mentioned, that orthogonal direction refers to the direction perpendicular to the height direction. In this embodiment, the lighting fixture 1 is installed on the ceiling with its height direction approximately coinciding with the vertical direction.

[0010] The lighting fixture 1 of the embodiment has a shape that allows the center and radial direction to be identified in a plan view when viewed from below in the height direction. More specifically, the diffusion cover 50 of the embodiment has a dome shape and a substantially circular shape in a plan view when viewed from below in the height direction. In the following description, when "radial direction" is mentioned, it refers to the radial direction of the diffusion cover 50; when "inside" is mentioned, it refers to the radially inward direction; and when "outside" is mentioned, it refers to the radially outward direction. The central axis of the lighting fixture 1 coincides with the central axis of the diffusion cover 50.

[0011] Figure 1 is a perspective view of a lighting fixture 1 according to one embodiment of the present disclosure, viewed from a diagonal downward side. The lighting fixture 1 is a ceiling light and is installed on the ceiling of a building. As it is a well-known structure, it will not be described in detail, but the lighting fixture 1 includes an adapter 80 (see Figures 14 and 15) that is attached to an adapter mounting part (not shown) provided on the ceiling of the building. The lighting fixture 1 also includes a fixture body (base member) 10 that is stationary with respect to the adapter 80 and is arranged to be substantially parallel to the ceiling and along the ceiling, a light-emitting part 20 (see Figures 4 and 5) that is stationary with respect to the fixture body 10, and a diffusion cover 50 that is arranged to cover the light-emitting part 20 and constitutes a light-transmitting cover.

[0012] The fixture body 10 is made of metal or resin. The diffusion cover 50 has a downwardly convex dome shape and a substantially circular shape in a plan view when viewed from the lower side in the height direction. The diffusion cover 50 is made of a light-transmitting resin material, such as polycarbonate, acrylic, silicon, or the like, and diffuses light from the light-emitting unit 20 to emit the light downward. In the present embodiment, the light-emitting unit 20 emits light based on electric power supplied from the outside via an adapter 80; however, the light-emitting unit 20 may emit light based on electric power supplied from the outside without going through the adapter 80.

[0013] FIG. 2 is a perspective view of the lighting fixture 1 with the diffusion cover 50 removed, as viewed obliquely from below. As shown in FIG. 2, the lighting fixture 1 includes a plurality of receivers 40 attached to the lower surface 10a of the fixture body 10 by locking (hooking), screwing, or the like in a state of being arranged at substantially equal intervals in the circumferential direction. Each receiver 40 has a recess 41 opening outward in the radial direction. The radial direction is included in the orthogonal direction. The diffusion cover 50 has a plurality of projections (not shown) protruding radially inward on the inner peripheral surface of the upper edge. The plurality of projections are arranged on the diffusion cover 50 at substantially equal intervals in the circumferential direction. A part of the inner surface of the recess 41 is defined by a locking portion (not shown) that protrudes radially outward to lock the projection.

[0014] In a state where the circumferential positions of the projections are different from the circumferential positions of the receivers 40, the diffusion cover 50 is brought into contact with the lower surface 10a of the fixture body 10 so as to cover the plurality of receivers 40. Thereafter, when the diffusion cover 50 is relatively rotated to one side in the circumferential direction with respect to the fixture body 10, the diffusion cover 50 is elastically deformed outward in the radial direction, so that the tapered distal end portion of the projection gets over the locking portion, and the projection fits into the recess 41. By this fitting, the projection is locked to the locking portion, and the diffusion cover 50 is fixed to the plurality of receivers 40.

[0015] FIG. 3 is a perspective view of the lighting fixture 1 as viewed obliquely from below in a state where a power cover 45 that further protects a power component 5 is removed from the state shown in FIG. 2. As shown in FIG. 3, an outer edge of a fixture body 10 has a substantially circular shape, and a through hole 11 is provided in a central portion of the fixture body 10. In the present embodiment, the through hole 11 is a cylindrical hole. The lighting fixture 1 includes a substrate 15 sandwiched between a resin sheet 35 described later and a lower surface 10a of the fixture body 10 at a radially inner central portion. The substrate 15 does not have to be fixed by being sandwiched, and may be attached to the lower surface 10a of the fixture body 10 by a fixing means, for example, a screw, an adhesive, or the like.

[0016] In the present embodiment, when viewed from the height direction (the thickness direction of the substrate 15), the substrate 15 has a substantially rectangular outer edge 15a. Here, the term "substantially rectangular" refers to a shape whose general outline is a rectangle. A substantially rectangular shape includes a shape having corners missing due to chamfering or the like compared to a perfect rectangle, and further includes a shape having at least one of a concave portion and a convex portion provided at one or more locations on the outer edge of a side. When viewed from the height direction (the thickness direction of the substrate 15), the outer edge of the substrate may have a shape other than a substantially rectangular shape, for example, may have a shape such as a substantially square shape, a substantially circular shape, or a substantially elliptical shape. The substrate 15 has a through hole 15b in a central portion thereof. In the present embodiment, the through hole 15b is a cylindrical hole. The through hole 15b is provided at a position overlapping the through hole 11 in the height direction. A central axis of the through hole 11, a central axis of the through hole 15b, and a central axis of the lighting fixture 1 are located on substantially the same straight line.

[0017] A plurality of power components 5 are mounted in a region surrounding the through hole 15b on a lower surface (mounting surface) 15c of the substrate 15. The lower surface 15c constitutes one side surface. The plurality of power components 5 are composed of electronic components included in at least one of a power supply device that supplies electric power to the light emitting unit 20 and a control device that controls light emission of the light emitting unit 20. Here, the light emission control is control related to light emission of the light emitting unit 20, and the light emission control includes dimming control, toning control, on / off control, and the like. The power supply device converts alternating-current power from the outside into direct-current power and steps down the voltage to an appropriate voltage. In addition, the control device controls turning on and off of the lighting fixture 1.

[0018] For example, when the control device receives a wireless signal from a remote control (not shown) indicating that the first light-emitting element (see Figure 4) 30 is turned on, it turns on the switching unit for controlling the light source of the first light-emitting element 30 mounted on the power supply unit. Conversely, when the control device receives a wireless signal from the remote control indicating that the first light-emitting element 30 is turned off, it turns off the switching unit for controlling the light source of the first light-emitting element 30. When the device is turned on, power is supplied to the first light-emitting element 30 and light is emitted from the first light-emitting element 30. When the device is turned off, power to the first light-emitting element 30 is cut off and light is no longer emitted from the first light-emitting element 30. The switching unit is composed of, for example, a transistor.

[0019] As shown in Figure 2, the light-emitting sides of multiple power supply components 5 are covered with a power supply cover 45 to prevent electric shock. The fixing structure of the power supply cover 45 to the fixture body 10 will be described in detail later. The light-emitting sides of multiple first light-emitting elements 30 on the substrate 15 are covered with a translucent resin sheet 35. The resin sheet 35 is substantially similar to the substrate 15 when viewed from the height direction and has a substantially rectangular outer edge that is larger than the substrate 15. The resin sheet 35 includes a cylindrical hole 35a in the center and notches 35b that communicate with the cylindrical hole 35a and are located at substantially equal intervals in the circumferential direction. The resin sheet 35 is formed, for example, by injection molding and is made of polycarbonate, acrylic, or silicone.

[0020] The resin sheet 35 has the same number of lenses 55 as the number of first light-emitting elements 30. The lenses 55 are positioned on the light-emitting side of the first light-emitting elements 30. In this embodiment, all the lenses 55 are included in the resin sheet 35 and are integrally connected. Each lens 55 is positioned so as to overlap one of the first light-emitting elements 30 when viewed from the height direction.

[0021] Figure 4 is a perspective view showing the state in which the translucent resin sheet 35 covering the substrate 15 has been removed from the state shown in Figure 3. As shown in Figure 4, the light-emitting unit 20 comprises a plurality of first light-emitting elements 30. The lighting fixture 1 also has a reflective sheet 25. The reflective sheet 25 is sandwiched between the substrate 15 and the resin sheet 35. The reflective sheet 25 is a sheet-like material with a higher reflectivity to light than the substrate 15, and reflects light that is directed directly from the first light-emitting elements 30 to the reflective sheet 25, as well as light that is directed indirectly from the first light-emitting elements 30 to the reflective sheet 25. The reflective sheet 25 has a cylindrical hole 25a in the center and a plurality of notches 25b that communicate with the cylindrical hole 25a and are located at approximately equal intervals in the circumferential direction. The plurality of notches 25b correspond to the notches 35b of the resin sheet 35, and the notches 25b include portions that overlap the notches 35b in the height direction.

[0022] Examples of the reflective sheet 25 include polyester film. The reflective sheet 25 plays a role in increasing the light extraction efficiency of each first light-emitting element 30. Through holes (not shown) are provided at the positions where each first light-emitting element 30 is positioned on the reflective sheet 25. Note that the lighting fixture of this disclosure does not necessarily have a reflective sheet. The resin sheet 35 is fixed to the fixture body 10 with screws in a state where the notch 35b overlaps the notch 25b when viewed from the height direction. In this embodiment, the resin sheet 35 is fixed to the fixture body 10 with screws, but the resin sheet 35 may also be fixed to the fixture body 10 with adhesive, or it may be fixed to the outer edge of the substrate 15 with screws or adhesive.

[0023] Figure 5 is a perspective view showing the state in which the reflective sheet 25 has been removed from the state shown in Figure 4, and Figure 6 is a plan view of the substrate 15 on which the multiple power supply components 5, multiple first light-emitting elements 30, and second light-emitting elements 16 are mounted, as seen from below in the height direction. As shown in Figures 5 and 6, the lighting fixture 1 includes a second light-emitting element 16 mounted on the lower surface 15c of the substrate 15. The second light-emitting element 16 constitutes the light source of the night light. The multiple first light-emitting elements 30 are arranged outside the multiple power supply components 5 and the second light-emitting elements 16 so as to surround the multiple power supply components 5 and the second light-emitting elements 16.

[0024] In this embodiment, the first light-emitting element 30 and the second light-emitting element 16 are composed of LED (light-emitting diode) chips. However, the light-emitting elements mounted on the substrate may be composed of semiconductor laser element chips or the like, or of semiconductor light-emitting element chips other than LED chips. Alternatively, the light-emitting elements mounted on the substrate may be composed of organic EL (Electro-Luminescence) elements or inorganic EL elements or the like.

[0025] Next, the structure of the power supply cover 45 will be described in detail. Referring to Figure 2, the power supply cover 45 defines a donut-shaped chamber 18 that is sealed on the lower side in the height direction. The power supply cover 45 has a first protective cover 60 and a second protective cover 70. Figure 7 is a perspective view of the first protective cover 60 as seen from the lower side in the height direction, and Figure 8 is a perspective view of the first protective cover 60 as seen from the upper side in the height direction.

[0026] As shown in Figure 7, the first protective cover 60 is an annular, integral resin member and has a first through-hole 61 in its center, which is a substantially cylindrical hole. The first protective cover 60 also has a second through-hole 62 located between the first through-hole 61 and the outer edge 67 in a part of its circumferential direction. The first protective cover 60 has a fixing piece 64 that protrudes radially outward from the annular wall portion 63 defining the first through-hole 61 toward the second through-hole 62. The fixing piece 64 is provided with a screw hole 64a and a mounting base 64c including a through-hole 64b. A movement restricting member 85 (see Figures 9 and 10) is placed on the mounting base 64c.

[0027] As shown in Figure 7, the outer surface of the first protective cover 60 has one or more second protrusions 68 that project outward along the power supply component 5, and in this embodiment, there are multiple second protrusions 68. Also, as shown in Figure 8, the inner surface of the first protective cover 60 has recesses 69 at locations corresponding to each second protrusion 68. A part of the corresponding power supply component 5 is housed in the recesses 69. By adopting this configuration, the power supply cover 45 can be made compact, so that the light emitted from the first light-emitting element 30 toward the center is less likely to be reflected or absorbed by the power supply cover 45 and more likely to pass outside the power supply cover 45. Therefore, a bright and clean illumination light can be emitted with a bright central part.

[0028] Figure 9 is a perspective view assuming that the second protective cover 70 is no longer visible from the state shown in Figure 2, and Figure 10 is a perspective view of the movement restricting member 85 viewed from diagonally above. Figure 11 is a perspective view of the second protective cover 70 viewed from diagonally below, and Figure 12 is a perspective view of the second protective cover 70 viewed from diagonally above. As shown in Figure 9, when the second protective cover 70 is removed from the power supply cover 45, the second light-emitting element 16 mounted on the substrate 15 becomes visible when viewed from the height direction. As shown in Figures 9 and 10, the movement restricting member 85 has a substantially L-shaped housing recess 85a for housing the power supply line 81, and the power supply line 81 is housed in the housing recess 85a.

[0029] As shown in Figure 10, the movement restricting member 85 has a pair of locking portions 85b at its upper end. On the other hand, as shown in Figure 11, the second protective cover 70 has a groove 70a that extends in the height direction and has a closed lower end, and as shown in Figure 12, it has a pair of projections 70b at its upper end. By engaging a pair of locking claws 85c provided on the tip side of the pair of locking portions 85b with the outer side surfaces 70c of the pair of projections 70b, the movement restricting member 85 and the second protective cover 70 are integrated into one unit.

[0030] During this integration, the approximately L-shaped opening of the approximately L-shaped receiving recess 85a is closed by the groove 70a. The movement restricting member 85 and the second protective cover 70 work together to define an approximately L-shaped passage. A portion of the power line 81 is constrained by being housed within this approximately L-shaped passage, thereby restricting the movement of a portion of the power line 81. As shown in Figure 13, the second protective cover 70 has a movement restricting portion 70d positioned circumferentially apart from the groove 70a, and the movement restricting portion 70d includes a first plate portion 73a extending approximately in the height direction and a second plate portion 73b projecting radially inward from the lower end of the first plate portion 73a. A portion of the power line 81 is hooked onto the upper side of the second plate portion 73b.

[0031] As shown in Figure 13, the power supply line 81 extends from the power supply unit, passes through a roughly L-shaped passage, and then extends from the lower opening of the roughly L-shaped passage, through the upper side of the second plate portion 73b, to the adapter attached to the fixture mounting portion on the ceiling. By restricting the position of the power supply line 81 with the roughly L-shaped passage and the movement restricting portion 70d, the excess portion of the power supply line 81 is effectively constrained, and the reflection of the power supply line 81 in the illumination light is suppressed.

[0032] As shown in Figure 2, the first protective cover 60 has a plurality of first protrusions 65 that are spaced apart in the circumferential direction on the peripheral edge of the upper end and protrude radially outward. The first protrusions 65 have through holes 65a that extend in the height direction. When viewed from the height direction, the first protrusions 65 have a planar shape corresponding to the notches 35b and 25b and overlap the notches 35b and 25b in the height direction. The first protrusions 65 include portions that are located inside the notches 35b and 25b. The first protective cover 60 is screw-fixed to the device body 10 with the substrate 15 sandwiched between the through holes 65a.

[0033] The second protective cover 70 is fitted into the second through-hole 62 of the first protective cover 60 so as to cover the light-emitting side of the second through-hole 62. As shown in Figure 11, the second protective cover 70 has a plate portion 70e that extends substantially perpendicularly and includes a portion located between the groove portion 70a and the movement restricting portion 70d in the circumferential direction. The plate portion 70e has a screw hole 70f. With the second protective cover 70 fitted into the second through-hole 62, the screw hole 70f of the second protective cover 70 overlaps in the height direction with the screw hole 64a (see Figure 7) of the fixing piece 64 of the first protective cover 60. The second protective cover 70 is fixed to the first protective cover 60 and the device body 10 by inserting the shaft of a screw (not shown) through the screw hole 70f and the screw hole 64a and then tightening it into the device body 10.

[0034] As shown in Figures 11 and 12, the second protective cover 70 has a lens 71. When the second protective cover 70 is fixed to the first protective cover 60 and the main body 10, the optical axis of the second light-emitting element 16 is located substantially on the same line as the central axis of the lens 71. The second protective cover 70 is made of a transparent resin material, such as transparent acrylic, transparent polycarbonate, or transparent silicone-based resin material, or transparent glass material. On the other hand, the first protective cover 60 is made of a white resin material. Polycarbonate or polybutylene terephthalate can be suitably used as the resin material constituting the first protective cover 60.

[0035] By constructing the second protective cover 70 from a transparent material, light emitted downwards in the height direction from the second light-emitting element 16 passes through the lens 71 and the diffusion cover 50 and is emitted downwards. Furthermore, by constructing the first protective cover 60, which occupies most of the power supply cover 45, from a white resin material, the reflectivity of the light emitted from the first light-emitting element 30 and reaching the first protective cover 60 can be increased. Therefore, the light extraction efficiency can be increased, and bright illumination light can be easily emitted.

[0036] Next, the structure of the adapter surrounding the lighting fixture 1 and the operation and effects of the lighting fixture 1 of this disclosure will be described. Figure 14 is a cross-sectional view of the area around the adapter 80 of the lighting fixture 1 attached to the adapter mounting part 95, and is a cross-sectional view including the central axis of the lighting fixture 1. As shown in Figure 14, the lighting fixture 1 includes an adapter 80 attached to an adapter mounting part 95 provided on the ceiling, a first hooking part 82 that can be selectively hooked onto the adapter 80, and a second hooking part 83 located on the light-emitting side of the first hooking part 82. When one of the first hooking part 82 or the second hooking part 83 is hooked onto the adapter 80, the fixture body 10 becomes impossible to detach from the adapter 80. The first holder 86 on which the first hooking part 82 is provided and the second holder 87 on which the second hooking part 83 is provided are constructed as separate parts from each other. In the example shown in Figure 14, the second hooking part 83 is hooked onto the adapter 80.

[0037] In this embodiment, the first holder 86 is a metal component, and the second holder 87 is integrated integrally with the fixture body 10. More specifically, as described above, the lighting fixture 1 includes a plurality of power supply components 5 mounted inside a plurality of first light-emitting elements 30 on the lower surface 15c of the substrate 15, and a power supply cover 45 that covers the light-emitting side of the power supply components 5. In this embodiment, the second holder 87 is the first protective cover 60 of the power supply cover 45, and the first protective cover 60 also serves the role of the second holder 87.

[0038] Figure 15 is an enlarged cross-sectional view of the area around the first hook portion 82 and the second hook portion 83 in Figure 14. As shown in Figure 15, the first holder 86 has a cylindrical portion (in this embodiment, a cylindrical part) 88 that extends in the height direction and an annular flange portion 89 located on the light-emitting side (lower side) in the height direction. The flange portion 89 connects to the lower end of the cylindrical portion 88 and extends in a substantially perpendicular direction. The flange portion 89 is sandwiched between the fixture body 10 and the substrate 15, and more specifically, between the roll portion 10b of the fixture body 10 and the substrate 15. Through this sandwiching, the first holder 86 is integrated with the fixture body 10 and the substrate 15, becoming one with the fixture body 10 and the substrate 15.

[0039] A portion 86a of the first holder 86 is located between the fixture body 10 and the power cover 45 in the orthogonal direction. In the example shown in Figure 15, the end (upper end) 87a of the second holder 87 opposite to the light emission side in the height direction is integrally formed with the first hook portion 82 and is in contact with an annular end face portion 91 that is continuously connected to the first hook portion 82.

[0040] According to the lighting fixture 1 of this disclosure, the fixture comprises a first hook portion 82 that can be selectively hooked onto an adapter 80 and a second hook portion 83 located on the light-emitting side of the first hook portion 82, and the first holder 86 on which the first hook portion 82 is provided and the second holder 87 on which the second hook portion 83 is provided are configured as separate components.

[0041] Therefore, even adapters of different heights can be easily adapted by simply changing the height of at least one of the first holder 86 and the second holder 87, allowing for flexible adaptation to adapters of different heights. Furthermore, for example, in lighting fixtures with multiple different specifications, by standardizing one of the first holder 86 and the second holder 87, the versatility of one of the first holder 86 and the second holder 87 can be improved, and the mass production capability of the lighting fixture 1 can also be improved.

[0042] Furthermore, since the lighting fixture 1 can be easily applied to adapters 80 of different heights, it becomes easier to increase the height of the adapter, making it easier to arrange precision components inside the adapter and increasing the degree of freedom in arranging the precision components. In other words, for example, at least a part of a communication device for communicating about the light emission control of multiple light-emitting elements 16, 30 by communicating with a remote control or the like can be easily placed inside the first holder 86 which is provided with the upper first hook portion 82, making it easier to achieve a more compact lighting fixture 1.

[0043] Furthermore, according to the lighting fixture 1 of the above embodiment, the hooking portion is configured in two stages, and the first holder 86, to which the upper first hooking portion 82 is provided, is made of metal with high rigidity and strength. Therefore, when the lower second hooking portion 83 is hooked onto the adapter 80, even if the lower second hooking portion 83 is damaged due to excessive force acting on the second holder 87 during an earthquake or the like, the upper first hooking portion 82, which has high rigidity and strength, will hook onto the adapter 80, preventing the fixture body 10 from falling. Thus, the lighting fixture 1 can be prevented from falling, ensuring complete safety.

[0044] Furthermore, according to the lighting fixture 1 of the above embodiment, the end portion 87a of the second holder 87 opposite to the light-emitting side in the height direction is integrally formed with the first hook portion 82 and is in contact with an annular end surface portion 91 that is continuously connected to the first hook portion 82. Therefore, the rigidity strength of the integrated structure of the first holder 86 and the second holder 87 can be increased, and the stability of the lighting fixture 1 can also be increased. In addition, according to the lighting fixture 1 of the above embodiment, the flange portion 89 of the first holder 86 is sandwiched between the fixture body 10 and the substrate 15, so the first holder 86 is integrated into the fixture body 10 without using screws or adhesives, thus reducing the number of parts and manufacturing man-hours, reducing manufacturing costs, and achieving good assembly.

[0045] 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.

[0046] For example, the above embodiment described a case where the first holder 86 is made of metal. However, the first holder may be made of resin. Also, the case described a case where the second holder 87 is a power supply cover 45. However, the second holder may be composed of any part integrated with the main body of the appliance. Furthermore, the case described a case in which the first holder 86 is integrated with the main body of the appliance 10 without using screws or adhesive by sandwiching the flange portion 89 of the first holder 86 between the main body of the appliance 10 and the base plate 15. However, the first holder 86 may be attached to the main body of the appliance by screws or adhesive.

[0047] The case in which the resin sheet 35 includes a lens 55 corresponding to each first light-emitting element 30 has been described, and the case in which there is a one-to-one correspondence between the first light-emitting elements 30 and the lens 55 has been described. Here, the multiple lenses 55 may have two or more different lenses. Also, the resin sheet constituting the light-transmitting part may have fewer lenses than the number of light-emitting elements, and there may be light-emitting elements for which there is no corresponding lens. Alternatively, the resin sheet constituting the light-transmitting part may not have any lenses.

[0048] The power supply cover 45, which covers multiple power supply components 5 mounted around the through-holes 11 of the circuit board 15, is composed of a first protective cover 60 and a second protective cover 70. However, the power supply cover that covers multiple power supply devices mounted around the through-holes of the circuit board may consist of only one protective cover made of resin or metal, or it may consist of three or more protective covers, each of which may be made of resin or metal.

[0049] The case in which the outer surface of the light-emitting side of the first protective cover 60 is made of white resin has been described. However, the outer surface of the light-emitting side of the first protective cover may have a metal layer, such as an aluminum layer, formed on a substrate made of metal or resin by vapor deposition, plating, sputtering, etc., in order to increase the reflectivity of light, and may also be mirror-finished by polishing, etc. Furthermore, a white coating film containing a white pigment may be formed on the outer surface of the light-emitting side of the first protective cover.

[0050] Alternatively, the first protective cover may be made of a metal such as silver, aluminum, or stainless steel, and a part of that metal may be mirror-finished. Alternatively, the first protective cover may be formed by fixing a mirror-finished aluminum material to a base material made of metal or resin. Alternatively, the outer surface of the power supply cover does not have to have a white portion; for example, the entire power supply cover may be made of transparent resin.

[0051] The second light-emitting element 16 constituting the night light was mounted inside the multiple first light-emitting elements 30 and mounted in the mounting area of ​​the multiple power supply components 5. However, the second light-emitting elements constituting the night light may be mounted outside the mounting area of ​​the multiple power supply components, or may be placed outside the power supply cover. It is not necessary to arrange the multiple first light-emitting elements on the outside of the multiple power supply components so as to surround them. For example, the multiple first light-emitting elements may be placed only at both ends in the direction of extension of a pair of sides of a roughly rectangular substrate, and the multiple power supply components may be placed in the center in the direction of extension of the pair of sides.

[0052] Furthermore, the lighting fixtures of this disclosure may have the following configurations. Configuration 1: A lighting fixture comprising a fixture body having a through hole in the center, a substrate arranged around the through hole of the fixture body, a plurality of light-emitting elements mounted on one side of the substrate, an adapter attached to an adapter mounting part provided on the ceiling, a first hooking part that can be selectively hooked onto the adapter, and a second hooking part located on the light-emitting side of the first hooking part, wherein when one of the first hooking part and the second hooking part is hooked onto the adapter, the fixture body becomes impossible to detach from the adapter, and a first holder provided with the first hooking part and a second holder provided with the second hooking part are configured as separate parts. Configuration 2: The lighting fixture according to Configuration 1, comprising a plurality of power supply components mounted inside the plurality of light-emitting elements on one side, and a power supply cover covering the light-emitting side of the power supply components, wherein the first holder has a flange on the light-emitting side in the height direction, the flange is sandwiched between the fixture body and the substrate, and a part of the first holder is located between the fixture body and the power supply cover with respect to an orthogonal direction perpendicular to the height direction. Configuration 3: The lighting fixture according to Configuration 1 or 2, wherein the end of the second holder opposite to the light-emitting side in the height direction is integrally formed with the first hook portion and is in contact with an annular end face portion that is continuously connected to the first hook portion. Configuration 4: A lighting fixture according to any one of Configurations 1 to 3, wherein the first holder is a metal component. Configuration 5: The lighting fixture according to any one of Configurations 1 to 4, wherein the second holder is integrated integrally with the fixture body. Configuration 6: A lighting fixture according to any one of Configurations 1 to 5, comprising a plurality of power supply components mounted inside the plurality of light-emitting elements on one side, and a power supply cover covering the light-emitting side of the power supply components, wherein the second holder is the power supply cover. Configuration 7: A lighting fixture according to any one of Configurations 1 to 6, wherein at least a portion of a communication device for communicating about the light emission control of the plurality of light-emitting elements is arranged inside the first holder. [Explanation of Symbols]

[0053] 1 Lighting fixture, 5 Power supply components, 10 Fixture body, 10a Bottom surface of fixture body, 10b Roll section of base body, 11 Through hole of fixture body, 15 Substrate, 15a Outer edge of substrate, 15b Through hole of substrate, 15c Bottom surface of substrate, 16 Second light-emitting element, Chamber 18, 20 Light-emitting part, 25 Reflective sheet, 25a Cylindrical hole of reflective sheet, 25b Notch of reflective sheet, 30 First light-emitting element, 30a Inner light-emitting element, 35 Resin sheet, 35a Cylindrical hole of resin sheet, 35b Notch of resin sheet, 40 Receiving bracket, 41 Recess of receiving bracket, 45 Power supply cover, 50 Diffuser cover, 55 Lens, 60 First protective cover, 61 First through hole of first protective cover, 62 63 Annular wall portion of the first protective cover, 64 Fixing piece, 64a Screw hole of the fixing piece, 64b Through hole of the fixing piece, 64c Mounting base, 65 First projection of the first protective cover, 65a Through hole of the first projection, 67 Outer edge of the first protective cover, 68 Second projection of the first protective cover, 69 Recess, 70 Second protective cover, 70a Groove portion of the second protective cover, 70b Projection portion of the second protective cover, 70c Side surface of the second protective cover, 70d Movement restricting portion of the second protective cover, 70e Plate portion of the second protective cover, 70f Screw hole of the second protective cover, 71 Lens of the second protective cover, 80 Adapter, 82 First hook portion, 82 Second hook portion, 81 Power line, 85 Movement restricting member, 85a Receiving recess of the movement restricting member, 85b Locking portion of the movement restricting member, 85c Locking claw of the movement restricting member, 86 First holder, 86a Part of the first holder, 87 Second holder, 87a Upper end of the second holder, 88 Cylindrical portion of the first holder, 89 Flange portion of the first holder, 91 End face portion, 95 Adapter mounting portion.

Claims

1. The device body has a through hole in the center, A substrate arranged around the through hole of the main body of the device, Multiple light-emitting elements mounted on one side of the aforementioned substrate, An adapter that is attached to an adapter mounting section provided on the ceiling, The adapter comprises a first hooking portion that can be selectively hooked onto the adapter and a second hooking portion located on the light emission side of the first hooking portion. When one of the first hook portion and the second hook portion is hooked onto the adapter, the device body becomes unable to detach from the adapter. A lighting fixture in which a first holder provided with the first hook portion and a second holder provided with the second hook portion are constructed as separate components.

2. A plurality of power supply components mounted inside the plurality of light-emitting elements on one side, The power supply component comprises a power supply cover that covers the light-emitting side, The first holder has a flange on the light-emitting side in the height direction, The flange portion is held between the main body of the device and the substrate. The lighting fixture according to claim 1, wherein a part of the first holder is located between the fixture body and the power cover with respect to an orthogonal direction perpendicular to the height direction.

3. The lighting fixture according to claim 1 or 2, wherein the end of the second holder opposite to the light-emitting side in the height direction is integrally formed with the first hook portion and is in contact with an annular end face portion that is continuously connected to the first hook portion.

4. The lighting fixture according to claim 1 or 2, wherein the first holder is a metal component.

5. The lighting fixture according to claim 1 or 2, wherein the second holder is integrated integrally with the fixture body.

6. A plurality of power supply components mounted inside the plurality of light-emitting elements on one side, The power supply component comprises a power supply cover that covers the light-emitting side, The lighting fixture according to claim 1, wherein the second holder is a power supply cover.

7. The lighting fixture according to claim 1 or 2, wherein at least a part of a communication device for communicating regarding the light emission control of the plurality of light-emitting elements is arranged inside the first holder.

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