Luminaire

Abstract

To provide a luminaire in which a light emitting surface of an inside cover is easily made larger while an increase in size is restrained.SOLUTION: A luminaire 1 comprises: an adapter 5 attached to an appliance attachment part of a ceiling; a base member 10 stationary with respect to the adapter 5, and arranged along the ceiling; a light source stationary with respect to the base member 10; an inside cover 20 arranged so as to cover the light source; an outside cover arranged so as to cover the inside cover 20; and one or more receiving tools 40 supporting the outside cover, and attached to the base member 10. A portion of the inside cover 20 overlaps with the receiving tools 40 in a height direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to lighting fixtures. [Background technology]

[0002] A conventional lighting fixture is described in Patent Document 1. This lighting fixture includes a substantially circular base plate, a light source, a diffusion cover, and a protective cover. The light source, diffusion cover, and protective cover are held by the base plate. The diffusion cover is disposed between the light source and the protective cover. The diffusion cover is disposed so as to cover the light source, and diffuses light from the light source and distributes it toward the protective cover. The protective cover reflects and diffuses light from the diffusion cover, distributing it to the outside. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-117385 Summary of the Invention [Problem to be solved by the invention]

[0004] If the light-emitting surface of the diffusion cover can be increased, it becomes easier to emit bright and beautiful light. However, if the light-emitting surface of the diffusion cover is increased, the lighting fixture tends to become larger. Therefore, an object of the present disclosure is to provide a lighting fixture that makes it easy to increase the light-emitting surface of the inner cover while suppressing the increase in size. [Means for solving the problem]

[0005] In order to solve the above problems, the lighting fixture of the present disclosure comprises a mounting part that is attached to a fixture mounting part provided on the ceiling of a building, a base member that is stationary relative to the mounting part and is arranged along the ceiling, a light source that is stationary relative to the base member, an inner cover that is arranged to cover the light source, an outer cover that is arranged to cover the inner cover, and one or more holders that support the outer cover and are attached to the base member, and a portion of the inner cover overlaps the holders in the vertical direction. [Effects of the Invention]

[0006] According to the lighting fixture according to the present disclosure, it is easy to increase the light-emitting surface of the inner cover while preventing the lighting fixture from becoming too large. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure, viewed obliquely from below. FIG. [Figure 2] FIG. 2 is a perspective view of the lighting fixture as viewed obliquely from above. [Figure 3] FIG. 2 is a perspective view of the lighting fixture with the outer cover removed, viewed obliquely from below. [Figure 4] 4 is a perspective view of the lighting fixture shown in FIG. 3 with the inner cover further removed, as viewed obliquely from below. [Figure 5] FIG. [Figure 6] 10 is a perspective view of a fixing point of the receiving device on the base member as viewed from the radially outer side. FIG. [Figure 7] FIG. 2 is a perspective view of the outer cover as viewed obliquely from above. [Figure 8] This is a perspective view of the receiving tool when viewed from diagonally above and diagonally inside. [Figure 9] 1 is a perspective view of the area around the receiving fixture in the lighting fixture as viewed obliquely from below. FIG. [Figure 10] 1 is a cross-sectional view including a radial direction and a height direction passing through the circumferential center of a holder in a lighting fixture. [Figure 11]10 is a perspective view of the area around the inner cover fixing screw in the lighting fixture, as viewed obliquely from below. FIG. [Figure 12] FIG. 11 is a cross-sectional view of the lighting fixture of the reference example, corresponding to FIG. 10. [Figure 13] FIG. 10 is a perspective view of the periphery of a receiving member in the lighting fixture of the first modified example, as viewed from below. [Figure 14] FIG. 10 is a schematic plan view illustrating the fixing positions of the inner cover fixing screws in the lighting fixture of the second modified example. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that, when multiple embodiments or variations are included below, it is anticipated from the beginning that new embodiments can be constructed by appropriately combining their characteristic features. In the following examples, the same components in the drawings are designated by the same reference numerals, and redundant explanations will be omitted. Furthermore, multiple drawings include schematic diagrams, and the dimensional ratios of the length, width, height, etc. of each component between different drawings do not necessarily match. Among the components described below, components not recited in the independent claims representing the highest concepts are optional components and are not essential components.

[0009] In the following description, when terms related to the vertical direction, such as below, above, lower side, and upper side, are used, they refer to the direction when the lighting fixture 1 is installed on a ceiling. Furthermore, when the "height direction" is referred to in the following description, the height direction refers to the height direction of the lighting fixture 1, and when the "orthogonal direction" is referred to, the orthogonal direction refers to a direction perpendicular to the height direction. Furthermore, the lighting fixture 1 of the embodiment has a shape that allows identification of a center and a radial direction in a plan view when viewed from the height direction. More specifically, the outer cover 30 of the embodiment has a dome shape with a through-hole 31 in the center and a circular ring shape in a plan view when viewed from below in the height direction. In the following description, when the "radial direction" is referred to, the radial direction refers to the radial direction of the outer cover 30. When the "inner" is referred to, the inner side refers to the radially inner side. When the "outer" is referred to, the outer side refers to the radially outer side.

[0010] Fig. 1 is a perspective view of a lighting fixture 1 according to an embodiment of the present disclosure as viewed from diagonally below, and Fig. 2 is a perspective view of the lighting fixture 1 as viewed from diagonally above. Fig. 3 is a perspective view of the lighting fixture 1 as viewed from diagonally below with the outer cover 30 removed, and Fig. 4 is a perspective view of the lighting fixture 1 as viewed from diagonally below with the inner cover 20 further removed from the state shown in Fig. 3.

[0011] 1 to 4, the lighting fixture 1 includes an adapter 5 that forms a mounting portion to be attached to a fixture mounting portion (not shown) provided on the ceiling of a building, a base member 10 that is stationary relative to the adapter 5 and arranged along the ceiling, a light source (not shown) that is stationary relative to the base member 10, an inner cover 20 that is arranged to cover the light source, an outer cover 30 that is arranged to cover the inner cover 20, and one or more brackets 40 that support the outer cover 30 and are attached to the base member 10. In this embodiment, the light source emits light based on power supplied from an external source via the adapter 5. However, the light source may also emit light based on power supplied from an external source without using an adapter.

[0012] The base member 10 is made of a metal plate that is, for example, substantially annular in plan view when viewed from the height direction. In the lighting fixture 1, the inner cover 20 is engaged with the adapter 5 so as to be rotatable relative to the adapter 5, preventing the inner cover 20 from falling off the adapter 5. The inner cover 20 and the receiving fixture 40 are fixed to the base member 10 and are integrated with the base member 10. The outer cover 30 is engaged with the receiving fixture 40. The integrated structure of the lighting fixture 1 will be described in detail below.

[0013] As shown in FIG. 1 , the outer cover 30 has a dome shape with a through-hole 31 in the center, and has a circular ring shape in a plan view when viewed from below in the height direction. The outer cover 30 is made of a translucent resin material, such as polycarbonate, acrylic, or silicone. A portion of the human presence sensor 7 is housed within the through-hole 31 of the outer cover 30, and a sensor surface 7a of the human presence sensor 7 is exposed to the outside through the through-hole 31. The human presence sensor 7 is made of, for example, an infrared sensor, and detects the presence of a person by sensing infrared rays emitted from the human body. The fixing structure of the human presence sensor 7 will be described later.

[0014] As shown in FIG. 2, the adapter 5 has two connecting fittings 8. After inserting the two connecting fittings 8 into two fitting insertion holes provided in the fixture mounting portion on the ceiling, the adapter 5 is rotated to secure the adapter 5 to the fixture mounting portion, and the power supply unit and control unit of the lighting fixture 1 are electrically connected to an external power source via wiring within the adapter 5. The power supply unit converts external AC power into DC power and reduces the voltage to an appropriate level. DC power is constantly supplied to the human presence sensor 7. When the control unit receives a signal indicating that the human presence sensor 7 has detected a person, it turns on a switching unit for controlling the light source mounted on the power supply unit. This on control supplies power to the light source, causing the light source to emit light. The switching unit is composed of, for example, a transistor.

[0015] As shown in Fig. 3, the inner cover 20 defines a generally doughnut-shaped internal chamber 28. The inner cover 20 is made of a translucent resin material, such as polycarbonate, acrylic, or silicone. A light source is disposed within the internal chamber 28 of the inner cover 20. The inner cover 20 is a diffusion cover that diffuses light from the light source and distributes it toward the outer cover 30.

[0016] The inner cover 20 has a plate-shaped flange portion 21 on its outer periphery that extends around the entire periphery in the circumferential direction. In this embodiment, the plate-shaped flange portion 21 has a substantially annular shape in a plan view when viewed from the height direction. However, the plate-shaped flange portion may have a substantially rectangular (e.g., substantially square) shape with a hole in the center when viewed from the height direction. The flange portion 21 is provided on the upper outer edge of the inner cover 20 so as to protrude radially outward and extend circumferentially. Providing the annular flange portion 21 on the inner cover 20 can effectively seal the gap between the inner cover 20 and the base member 10, thereby substantially reliably preventing light leakage between the inner cover 20 and the base member 10. Instead of the annular flange portion 21, the inner cover 20 may have multiple plate-shaped flange portions on its outer periphery that are spaced apart in the circumferential direction. In this case, each flange portion is provided on the upper outer edge of the inner cover so as to protrude radially outward. It is preferable that each flange portion extend circumferentially.

[0017] The flange portion 21 has first thin-walled portions 21a and first thick-walled portions 21b that are thicker than the first thin-walled portions 21a, arranged alternately in the circumferential direction. The first thick-walled portions 21b include protrusions that protrude radially outward beyond the first thin-walled portions 21a. The first thick-walled portions 21b have threaded holes. The inner cover 20 is fixed to the base member 10 by fastening the screws 9 into the threaded holes of the first thick-walled portions 21b and then into threaded holes (not shown) in the base member 10. Because the screws 9 are fastened to the first thick-walled portions 21b, which have high rigidity, damage to the flange portion 21 caused by fastening the screws 9 can be effectively suppressed.

[0018] 4, the adapter 5 has a plurality of protrusions 5a at a height intermediate portion thereof, which protrude radially outward from its cylindrical outer circumferential surface and extend circumferentially. The inner cover 20 also has protrusions (not shown) on its inner circumferential surface, which protrude radially inward and extend circumferentially. By engaging the protrusions of the inner cover 20 with the protrusions 5a while positioned above the protrusions 5a, the inner cover 20 is engaged with the adapter 5 in a relatively rotatable state, preventing it from falling off the adapter 5.

[0019] 3, a human presence sensor holding member 70 is fixed to the inner cover 20. The human presence sensor holding member 70 has an annular holding portion 71 that encases and holds the human presence sensor 7, and a pair of pillar portions 72 that are formed integrally with the holding portion 71. When the human presence sensor 7 is held by the holding portion 71, the sensor surface 7a of the human presence sensor 7 protrudes downward beyond the holding portion 71.

[0020] The pair of pillars 72 are arranged on the same straight line across the center of the appliance in a plan view from the height direction. The holding portion 71 is located at the center of the appliance in a plan view from the height direction and is located below the inner cover 20 with a gap in the height direction relative to the inner cover 20. The pillars 72 are inclined with respect to the height direction so as to be displaced radially inward as they extend downward. A flat mounting portion 75 extending along the underside 22 of the inner cover 20 is provided at the end of the pillars 72 facing the inner cover 20. In this embodiment, the underside 22 and the mounting portion 75 extend in a substantially perpendicular direction. The mounting portion 75 is fixed to the inner cover 20 with a rivet 77, thereby fixing the human sensor holding member 70 to the inner cover 20.

[0021] As shown in FIG. 4, the lighting device 1 includes a substrate 80 fixed to a base member 10. The substrate 80 is fixed to the underside of the base member 10 by fixing means such as screws or adhesive. The substrate 80 is provided with a through-hole 82 formed of a cylindrical hole or the like. A plurality of electronic components 81 that constitute a control device and a power supply device are mounted on the substrate 80. A plurality of LED (Light Emitting Diode) chips (not shown) are mounted on the substrate 80.

[0022] The light source is composed of multiple LED chips. The multiple LED chips are arranged radially outward from the adapter 5, for example, radially outward from the multiple electronic components 81. The multiple LEDs may be arranged at intervals in the circumferential direction on the circumference of a circle centered on the center of the fixture in a plan view when viewed from the height direction. Alternatively, the multiple LEDs may be arranged at intervals in the circumferential direction on two or more circles centered on the center of the fixture and having different diameters. The light source may also be composed of a single LED chip.

[0023] Next, the structure for fixing the holder 40 to the base member 10 and the structure for locking the outer cover 30 to the holder 40 will be described. Fig. 5 is a perspective view of the holder 40, and Fig. 6 is a perspective view of the fixing point of the holder 40 on the base member 10 as viewed from the radial outside. The holder 40 is made of resin. As shown in Fig. 6, the holder 40 has an internal chamber 41 that opens radially outward and to one circumferential side.

[0024] The receiver 40 further has a plurality of locking portions 42 that protrude upward and are spaced apart in the circumferential direction, and a cylindrical positioning portion 43 that protrudes upward. The locking portions 42 include a locking claw 42a that extends in the circumferential direction, and a connecting portion 42b that connects the locking claw 42a to a bottom plate 45 of the receiver 40 and extends in the height direction. The locking claw 42a includes a claw portion 42c that protrudes to the other circumferential side.

[0025] The bottom plate 45 of the receiver 40 is provided with a thin, flexible portion 46 with through holes around its periphery. The positioning portion 43 protrudes upward from the flexible portion 46. As shown in FIG. 6 , the base member 10 has a first through hole 10a through which the locking claw 42a can pass and a second through hole 10b formed as a cylindrical hole. The height of the first through hole 10a is approximately the same as the height of the connecting portion 42b. After the locking claw 42a passes through the first through hole 10a from below, the receiver 40 is moved relative to the base member 10 in one circumferential direction while the flexible portion 46 is elastically deformed upward. This causes the positioning portion 43 to fit into the second through hole 10b. In this state, the elastic deformation of the flexible portion 46 is released, and the connecting portion 42b is sandwiched between a pair of substantially parallel opposing surfaces on the inner circumferential surface of the first through hole 10a, and the claw portion 42c is engaged with the upper surface of the base member 10. The receiver 40 is attached to the base member 10 in such a structure and positioned relative to the base member 10 .

[0026] As shown in Fig. 5, the radially inner surface of the internal chamber 41 of the receiver 40 has a substantially V-shaped recess 47 in the circumferential center and a locking portion 48 that protrudes radially outward. On the other hand, as shown in Fig. 7, i.e., a perspective view of the outer cover 30 viewed obliquely from above, the outer cover 30 has a protrusion 33 at the upper end of its inner circumferential surface that has a shape corresponding to the recess 47 and protrudes radially inward.

[0027] The multiple brackets 40 are fixed to the base member 10 at intervals in the circumferential direction. In order to stably and reliably support the outer cover 30 with the brackets 40, the multiple brackets 40 are preferably arranged at approximately equal intervals in the circumferential direction, and it is preferable that the lighting fixture 1 includes three or more brackets 40 arranged at intervals in the circumferential direction. There are the same number of protrusions 33 as the number of brackets 40.

[0028] With the circumferential positions of the protrusions 33 different from the circumferential positions of the holders 40, the outer cover 30 is brought into contact with the underside of the base member 10 so as to cover the multiple holders 40. When the outer cover 30 is then rotated relative to the base member 10 in one circumferential direction, the outer cover 30 elastically deforms radially outward, causing the tapered tips of the protrusions 33 to climb over one circumferential end of the locking portions 48 and fit into the recesses 47. With this fit, the protrusions 33 are locked in the locking portions 48, and the outer cover 30 is fixed to the multiple holders 40.

[0029] Next, the relative position of the inner cover 20 with respect to the receiving fixture 40 and the effects that can be achieved by the lighting fixture 1 will be described. Fig. 8 is a perspective view of the receiving fixture 40 as viewed obliquely from above and from obliquely inside. As shown in Fig. 8, the receiving fixture 40 has a plate-shaped protruding portion 50 that protrudes radially inward. The protruding portion 50 extends in a substantially circumferential direction and is located below a mounting surface 51 that contacts the underside of the base member 10 when the receiving fixture 40 is attached.

[0030] As a result, when the receiving device 40 is attached to the base member 10, the protrusion 50 and the base member 10 define a space 53 extending approximately in the circumferential direction. The space 53 is open on both circumferential sides and on the radially inward side. The protrusion 50 has a second thin portion 50a and a second thick portion 50b that is thicker than the second thin portion 50a. The second thin portion 50a is provided on one circumferential side. The height position of the lower surface of the second thin portion 50a approximately matches the height position of the lower surface of the second thick portion 50b. In other words, the upper surface 54 of the protrusion 50 has a recess 55 where the second thin portion 50a is formed. In the space 53, the height of the portion where the second thin portion 50a is formed is higher than the height of the portion where the second thick portion 50b is formed.

[0031] Fig. 9 is a perspective view of the area around bracket 40 in lighting fixture 1 as viewed from diagonally below, and Fig. 10 is a cross-sectional view including the radial and height directions passing through the circumferential center of bracket 40 in lighting fixture 1. Fig. 11 is a perspective view of the area around screw 9 in lighting fixture 1 as viewed from diagonally below, and Fig. 12 is a cross-sectional view corresponding to Fig. 10 of lighting fixture 301 of the reference example.

[0032] 9 and 10, a portion of the inner cover 20 overlaps the receiving member 40 in the height direction. A portion of the flange portion 21 extends into the space 53 from one circumferential end to the other end of the space 53 and overlaps the protrusion 50 in the height direction. At least a portion of the first thin portion 21a overlaps the second thick portion 50b in the height direction.

[0033] As shown in FIG. 11 , a portion of the screw 9 that fixes the first thick portion 21b to the base member 10 is inserted into the space 53. In other words, a portion of the screw 9 overlaps the receiving tool 40 in the height direction, and more specifically, overlaps the second thin portion 50a (see FIG. 8 ) in the height direction. Because the height of the portion where the second thin portion 50a is formed is higher than the height of the portion where the second thick portion 50b is formed, the head 9a of the screw 9 can be accommodated in the space 53. In the example shown in FIG. 11 , a portion of the head 9a of the screw 9 is accommodated in the space 53, but the entire head 9a of the screw 9 may be accommodated in the space 53.

[0034] 12, in the lighting fixture 301 of the reference example, the entire receiving member 340 is located radially outside the inner cover 320, and the inner cover 320 does not overlap the receiving member 340 in the height direction at any point. In contrast, in the lighting fixture 1, a portion of the inner cover 20 overlaps the receiving member 40 in the height direction, so that the outer diameter of the inner cover 20 can be made larger than that of the lighting fixture 301 of the reference example, assuming that the outer diameter of the lighting fixture 1 is the same. Therefore, the light-emitting surface of the inner cover 20 can be made larger, making it easier to emit bright and beautiful light.

[0035] In other words, compared to lighting fixture 301 of the reference example, if the light-emitting surface of inner cover 20 is the same, the outer diameter of outer cover 30 can be made smaller. Therefore, lighting fixture 1 can easily emit bright and beautiful light and can also be easily configured compactly.

[0036] Furthermore, because a portion of the inner cover 20 overlaps the receiving fixture 40 in the height direction, the receiving fixture 40 can prevent the portion of the inner cover 20 from floating downward. Therefore, the inner cover 20 can be prevented from falling radially inward, and the inner cover 20 can be prevented from coming off the base member 10.

[0037] Furthermore, when at least a portion of the head 9a of the screw 9 overlaps the receiving fixture 40 in the height direction, the head 9a can prevent the receiving fixture 40 from tilting radially inward, and the outer cover 30 can be prevented from coming off the receiving fixture 40. Furthermore, when at least a portion of the head 9a of the screw 9 is in contact with or close to the receiving fixture 40, the head 9a can support the receiving fixture 40. Therefore, the receiving fixture 40 can be effectively prevented from tilting, and the outer cover 30 can be effectively prevented from coming off the receiving fixture 40.

[0038] The present disclosure is not limited to the above-described embodiments and their variations, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents. For example, in the above-described embodiments, the light source is configured with a plurality of LED chips. However, the light source may include one or more chips of light-emitting elements other than LED chips, or may include one or more chips of solid-state light-emitting elements such as semiconductor laser chips, organic EL (Electroluminescence) elements, or inorganic EL elements. Alternatively, the light source may be configured with an incandescent lamp or a fluorescent lamp.

[0039] Although the flange portion 21 has been described as having a thin portion 21a and a thick portion 21b, the thickness of the flange portion may be substantially constant. As shown in FIG. 13 , i.e., a perspective view of the area around the bracket 140 in the lighting fixture 101 of the first modification seen from below, the inner cover 120 may have a protrusion 165 protruding radially outward on its outer periphery, and the protrusion 165 may be fitted into a recess 169 provided in the radially inner sidewall of the bracket 140, or the screw for fastening the flange portion to the base member may be omitted. In this case, it is preferable to press-fit at least a portion of the flange portion 121 of the inner cover 120 into the space 53. Alternatively, the inner cover may have a recess provided radially outward on its outer periphery, and the recess may be fitted into a protrusion provided in the radially inner sidewall of the bracket.

[0040] 14, i.e., a schematic plan view seen from above in the height direction, screws 209 may be provided to fix the inner cover to the base member. When a first line 260 is a line extending radially and intersecting with receiver 240 at a single point on a first circumferential side in a plan view seen from the height direction, and a second line 270 is a line extending radially and intersecting with receiver 240 at a single point on a second circumferential side in a plan view seen from the height direction, at least a portion of screw 209 may be disposed in region R surrounded by first line 260 and second line 270.

[0041] Even in this case, the light-emitting surface of the inner cover can be increased or a compact lighting fixture can be realized by overlapping a part of the inner cover with the holder 240. Furthermore, at least a part of the screw 209 can prevent the holder 240 from falling radially inward, and thus the outer cover can be prevented from coming off the holder 240.

[0042] Furthermore, the lighting device of the present disclosure may have the following configuration. Configuration 1: A lighting fixture comprising: a mounting part attached to a fixture mounting part provided on the ceiling of a building; a base member that is stationary relative to the mounting part and is arranged along the ceiling; a light source that is stationary relative to the base member; an inner cover that is arranged to cover the light source; an outer cover that is arranged to cover the inner cover; and one or more receiving devices that support the outer cover and are attached to the base member, wherein a portion of the inner cover overlaps the receiving devices in the vertical direction. Configuration 2: A lighting device as described in Configuration 1, comprising a substrate fixed to the base member and three or more of the receiving devices arranged at intervals in the circumferential direction, and the light source including one or more light-emitting elements mounted on the substrate. Configuration 3: A lighting fixture as described in configuration 1 or 2, wherein the inner cover has a plate-shaped flange portion that exists around the entire circumference, or multiple plate-shaped flange portions that are spaced apart in the circumferential direction, on the outer circumferential side, and the holder has a plate-shaped protrusion that protrudes radially inward, and at least a portion of the flange portion overlaps the protrusion in the height direction. Configuration 4: The lighting fixture described in Configuration 3, wherein the flange portion has a first thin portion and a first thick portion that is thicker than the first thin portion, the protrusion portion has a second thin portion and a second thick portion that is thicker than the second thin portion, and is provided with a screw for fixing the first thick portion to the base member, and at least a portion of the first thin portion overlaps the second thick portion in the height direction. Configuration 5: The lighting device according to configuration 4, wherein at least a portion of the screw overlaps the second thin portion in the height direction. Configuration 6: A lighting fixture described in any one of configurations 1 to 4, further comprising a screw for fixing the inner cover to the base member, wherein at least a portion of the screw overlaps the receiving device in the height direction. Configuration 7: A lighting fixture according to any one of configurations 4 to 6, wherein at least a portion of the head of the screw contacts or is adjacent to the receiving device. Configuration 8: A lighting fixture described in any one of configurations 1 to 3, which is provided with screws that fix the inner cover to the base member, and in a planar view from the height direction, when a first line is a line that extends radially and intersects with the receiving device at a single point on a first circumferential side thereof, and a second line is a line that extends radially and intersects with the receiving device at a single point on a second circumferential side thereof, at least a portion of the screws is positioned in an area surrounded by the first line and the second line. [Explanation of symbols]

[0043] 1,101 Lighting fixture, 5 Adapter, 5a Protrusion, 7 Human presence sensor, 7a Sensor surface, 8 Connecting fitting, 9,209 Screw, 9a Head, 10 Base member, 10a First through hole, 10b Second through hole, 20,120 Inner cover, 21,121 Flange portion, 21a First thin portion, 21b First thick portion, 22 Underside, 30 Outer cover, 31 Through hole, 33 Protrusion, 40,140,240 Receiver, 41 Internal chamber, 42 Locking portion, 42a Locking claw, 42b Connecting portion, 42c Claw portion, 43 Positioning portion, 45 Bottom plate, 46 Flexible portion, 47 Recess, 48 Receiver locking portion, 50 Protruding portion of receiving device, 50a Second thin-walled portion, 50b Second thick-walled portion, 51 Mounting surface, 53 Space, 54 Upper surface of protruding portion, 55 Recess, 70 Human sensor holding member, 71 Holding portion, 72 Pillar portion, 75 Mounting portion, 77 Rivet, 80 Board, 81 Electronic component, 82 Through hole in board, 165 Protruding portion of inner cover, 169 Recess in receiving device, 260 First straight line, 270 Second straight line, R, Area surrounded by the first straight line and the second straight line.

Claims

1. a mounting portion to be attached to an appliance mounting portion provided on the ceiling of a building; a base member that is stationary relative to the mounting portion and is disposed along the ceiling; a light source that is stationary relative to the base member; an inner cover disposed to cover the light source; an outer cover disposed to cover the inner cover; one or more supports for supporting the outer cover and attached to the base member; A lighting fixture in which a portion of the inner cover overlaps the receiving device in the height direction.

2. a substrate fixed to the base member; and three or more of the receiving devices arranged at intervals in the circumferential direction, The lighting fixture of claim 1 , wherein the light source comprises one or more light emitting elements mounted on the substrate.

3. the inner cover has a plate-shaped flange portion that exists over the entire circumference in the circumferential direction, or a plurality of plate-shaped flange portions that are arranged at intervals in the circumferential direction on the outer peripheral side, The receiving tool has a plate-shaped protruding portion protruding radially inward, The lighting fixture according to claim 1 , wherein at least a portion of the flange portion overlaps with the protrusion portion in a height direction.

4. the flange portion has a first thin portion and a first thick portion that is thicker than the first thin portion, the protruding portion has a second thin portion and a second thick portion that is thicker than the second thin portion, a screw for fixing the first thick portion to the base member; The lighting fixture according to claim 3 , wherein at least a portion of the first thin portion overlaps the second thick portion in a height direction.

5. The lighting fixture according to claim 4 , wherein at least a portion of the screw overlaps the second thin-walled portion in a height direction.

6. a screw for fixing the inner cover to the base member; The lighting fixture according to claim 1 or 2, wherein at least a portion of the screw overlaps the receiving fixture in a height direction.

7. The lighting fixture according to claim 6 , wherein at least a portion of the head of the screw contacts or is adjacent to the receptacle.

8. a screw for fixing the inner cover to the base member; 3. The lighting fixture of claim 1, wherein, in a plan view from the height direction, when a first line is a line extending radially that intersects with the receiving device at a single point on a first circumferential side thereof, and a second line is a line extending radially that intersects with the receiving device at a single point on a second circumferential side thereof, at least a portion of the screw is positioned in an area surrounded by the first line and the second line.

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