Lighting fixture

Abstract

To provide a lighting fixture capable of suppressing damage on electronic components due to pulling of wiring.SOLUTION: A lighting fixture 1 is provided with: an adapter mounted on a fixture mounting part of a ceiling; a substrate 80 which is disposed so as to surround the adapter and on which one or more light emitting elements are mounted; and an inside cover 20 covering the one or more light emitting elements and dispersing the light emitted from the one or more light emitting elements. A first cord 85 where one or more first wirings connected to either of a plurality of electronic components 84 mounted on the substrate 80 are covered with an insulation member extends from the substrate 80. The lighting fixture 1 includes: a first restriction part restricting a first part 85a extending in an extension direction containing at least height direction extending components in the first cord 85; and a second restriction part 29 disposed at a portion with an interval to the first restriction part and restricting a second part 85b of the first cord 85.SELECTED DRAWING: Figure 12

Description

[Technical Field]

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

[0002] Conventionally, lighting fixtures have been known that include a light source, a power supply device that converts external AC power into DC power and steps it down to a predetermined voltage before supplying it to the light source, and a lighting circuit that lights the light source (see, for example, Patent Document 1). Electronic components installed in separate locations in the lighting fixture are electrically connected by cords whose wiring is covered with an insulating material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-157073 Summary of the Invention [Problem to be solved by the invention]

[0004] If a person accidentally pulls on the cord when assembling or installing a lighting fixture, the electronic components connected to the wiring of the cord may be damaged. Therefore, an object of the present disclosure is to provide a lighting fixture that can prevent damage to electronic components caused by pulling on the wiring. [Means for solving the problem]

[0005] In order to solve the above problem, the lighting fixture of the present disclosure comprises: a mounting portion that is attached to a fixture mounting portion provided on the ceiling of a building; a substrate that is arranged to surround the mounting portion and has one or more light-emitting elements mounted thereon; and an optical cover that covers the one or more light-emitting elements and diffuses light emitted by the one or more light-emitting elements, and the lighting fixture has a first cord that has one or more first wirings connected to any of a plurality of electronic components mounted on the substrate and covered with an insulating material, extending from the substrate (substrate side), a first restraint portion that restrains a first portion of the first cord that extends in an extension direction that includes at least a height extension component, and a second restraint portion that is arranged at a distance from the first restraint portion and restrains a second portion of the first cord.

[0006] Furthermore, another aspect of the lighting fixture according to the present disclosure comprises a mounting portion that is attached to a fixture mounting portion provided on the ceiling of a building, a substrate that is arranged to surround the mounting portion and has one or more light-emitting elements mounted thereon, and an optical cover that covers the one or more light-emitting elements and diffuses the light emitted by the one or more light-emitting elements, and comprises two or more cords that extend from the substrate (substrate side), each cord having a structure in which one or more wires connected to one of a plurality of electronic components mounted on the substrate are covered with an insulating material, and a cap that fits into one or more engaging members including the optical cover, thereby defining two or more restraining portions that, in combination with the one or more engaging members, restrain a portion of each of the two or more cords. [Effects of the Invention]

[0007] According to the lighting fixture according to the present disclosure, damage to electronic components caused by pulling on wiring can be suppressed. [Brief explanation of the drawings]

[0008] [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] FIG. 4 is a perspective view showing a state in which the cap is removed from the state shown in FIG. 3. [Figure 9] FIG. 10 is a perspective view of the second cord restraining member as viewed obliquely from above. [Figure 10] FIG. 2 is a perspective view of the inner cover as viewed obliquely from below. [Figure 11] 10 is a perspective view of the first cord restraining protrusion as viewed obliquely from below. FIG. [Figure 12] 10 is a perspective view illustrating a restraining structure for a first cord extending from a human presence sensor to a connector mounted on a circuit board. FIG. [Figure 13] FIG. 10 is a perspective view of the second restraint portion as viewed obliquely from below. [Figure 14] FIG. 2 is a perspective view of the cap as viewed from above and from the radially inner side. DETAILED DESCRIPTION OF THE INVENTION

[0009] 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.

[0010] 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.

[0011] 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.

[0012] As shown in Figures 1 to 4, 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 adapter 5 and arranged along the ceiling, a light source (not shown) that is stationary relative to base member 10, an inner cover 20 that is arranged to cover the light source, an outer cover 30 that is arranged to cover inner cover 20, and one or more brackets 40 that support outer cover 30 and are attached to base member 10. In this embodiment, the light source emits light based on power supplied from an external source via adapter 5. However, the light source may also emit light based on power supplied from an external source without via adapter 5.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] As shown in Fig. 3, the inner cover 20 defines a substantially doughnut-shaped internal chamber 28. The inner cover 20 is made of a translucent resin material, such as polycarbonate, acrylic, or silicone. The inner cover 20 covers the light source. In other words, the light source is disposed within the internal chamber 28 of the inner cover 20. The inner cover 20 is an optical cover (diffusion cover) that diffuses light emitted from the light source, and distributes the diffused light from the light source toward the outer cover 30.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] As shown in FIG. 4 , the lighting fixture 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 has a through-hole 82 formed of a cylindrical hole or the like. A plurality of electronic components 81 constituting 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. The LED chip is an example of a light-emitting element. The light source is composed of a plurality of LED chips. The plurality of LED chips are arranged radially outward from the adapter 5, for example, radially outward from the plurality of electronic components 81. The plurality of LEDs may be arranged at intervals in the circumferential direction on the circumference of a circle centered on the fixture center in a plan view when viewed from the height direction. Alternatively, the plurality of LEDs may be arranged at intervals in the circumferential direction on two or more circles centered on the fixture center and having different diameters. Alternatively, the light source may be composed of a single LED chip mounted on a substrate.

[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, we will explain the restraint structure of a first cord in which a pair of first wirings that electrically connect the human sensor and the electronic components mounted on the substrate 80 are covered with an insulating material, and a second cord in which a second wiring for supplying external power to the electronic components mounted on the substrate 80 is covered with an insulating material.

[0030] As shown in Fig. 3, lighting fixture 1 includes cap 50 fixed to inner cover 20. Fig. 8 is a perspective view showing a state in which cap 50 has been removed from the state shown in Fig. 3. As shown in Fig. 8, inner cover 20 is provided with first cord restraining protrusion 23 that protrudes downward, and has second cord restraining member 24 that protrudes downward fixed thereto. Inner cover 20 and second cord restraining member 24 form a fitting member. Fig. 9 is a perspective view of second cord restraining member 24 as viewed obliquely from above.

[0031] As shown in FIG. 9 , the second cord restraint member 24 has a pair of L-shaped locking portions 25 on its upper side and a recessed portion 24a on its upper, radially inward side that opens radially outward and upward in the height direction. Meanwhile, as shown in FIG. 10 , i.e., a perspective view of the inner cover 20 viewed obliquely from below, the inner cover 20 has a generally rectangular parallelepiped protrusion 20a that protrudes downward, and the protrusion 20a has a pair of holes 20b that open to its side. The second cord restraint member 24 is fixed to the inner cover 20 by fitting a portion of the rectangular parallelepiped protrusion 20a into the recessed portion 24a and engaging the claw portions 25a of the pair of L-shaped locking portions 25 with the inner surfaces of the pair of holes 20b. The second cord restraint member 24 does not have to be fixed to the inner cover 20, and may be integrally formed with the inner cover 20.

[0032] As shown in FIG. 8, the first cord restraining protrusion 23 has a pair of plate-like portions 23b that define an opening 23a that opens radially outward from the top to the bottom in the height direction. The plate-like portions 23b widen radially outward as they approach the top. FIG. 11 is a perspective view of the first cord restraining protrusion 23 as viewed obliquely from below. A cord inlet 23c that opens downward in the height direction is provided at the radially outer end of the first cord restraining protrusion 23. The cord inlet 23c is defined by a wall 23d that is U-shaped in plan view and a protrusion 23g that protrudes from the tip of one wall 23e of a pair of walls 23e, 23f that define the opening in wall 23d toward the other wall 23f.

[0033] A groove 27 extending in a substantially perpendicular direction and opening in the perpendicular direction is provided at the radially outer end of the first cord restraining protrusion 23. A cord outlet 23h is provided at the radially outer tip of the groove 27. FIG. 12 is a perspective view illustrating a restraining structure for a first cord 85 extending from the motion sensor 7 to a connector 84 mounted on the substrate 80. The connector 84 is included in multiple electronic components mounted on the substrate 80. The lighting fixture 1 includes a first cord 85 extending from the motion sensor 7 (motion sensor 7 side) to a connector 84 (connector 84 side) mounted on the substrate 80. The first cord 85 has a structure in which two first wires (not shown) are coated with insulating resin. One of the first wires is a signal wire that electrically connects the motion sensor 7 to the control device, and the other first wire is a power wire that electrically connects the motion sensor 7 to the power supply device.

[0034] As shown in FIG. 12, the lighting fixture 1 has a second restraining portion 29 arranged at a distance from the first cord restraining protrusion 23. The second restraining portion 29 may be provided on the substrate 80, but in this embodiment, it is provided on the inner cover 20. FIG. 13 is a perspective view of the second restraining portion 29 as viewed obliquely from below. As shown in FIG. 13, the second restraining portion 29 is formed as a groove that opens on the bottom. In this embodiment, the groove extends in a substantially perpendicular direction and is open on both ends. One side defining the groove is provided with a cord restraining portion 29a formed as a protrusion that protrudes toward the other side.

[0035] 12, first portion 85a of first cord 85 extending upward from human presence sensor 7 is accommodated in first cord restraining protrusion 23 through opening 23a, which extends from the upper side in the height direction to the lower side so as to gently slope radially outward. One end of first portion 85a is prevented from coming off first cord restraining protrusion 23 by protrusion 23g of cord inlet 23c, and the other end of first portion 85a is accommodated in groove 27.

[0036] The second portion 85b of the first cord 85, which is located closer to the connector 84 than the first portion 85a, is accommodated in a groove that constitutes the second restraining portion 29. A part of the second portion 85b is sandwiched between the cord restraining portion 29a and one side surface of the groove, so that the second portion 85b accommodated in the groove cannot be removed from the groove. In the above description, the first cord restraining protrusion 23 is formed integrally with the inner cover 20. However, the first cord restraining protrusion 23 may be formed separately from the inner cover 20 or may be fixed to the inner cover 20.

[0037] Next, the restraining structure of the second cord will be described. As shown in FIG. 8, the second cord restraining member 24 has an L-shaped groove 24b on the radially outer side. The groove 24b has a first groove portion 24c extending substantially in the height direction and a second groove portion 24d that is connected to the first groove portion 24c and extends substantially perpendicularly. A portion of a second cord 95 (see FIG. 12) is accommodated in the groove 24b. The second cord 95 includes a wiring (not shown) that supplies externally supplied power to the power supply device and an insulating member that covers the wiring. The second cord 95 has a portion that extends downward from the center of the lower surface of the adapter 5, which has a substantially cylindrical outer shape; a portion that is accommodated in the L-shaped groove 24b; and a portion that extends from the second groove portion 24d to a connector (connector side) (not shown) mounted on the circuit board 80.

[0038] Fig. 14 is a perspective view of the cap 50 as viewed from above and from the radially inner side. As shown in Fig. 12, the cap 50 includes a first protruding portion 51 having a first recess 51a and a second protruding portion 52 positioned at a distance from the first protruding portion 51 and having a second recess 52a. The first recess 51a and the second recess 52a each open radially inward and extend substantially in the height direction. The cap 50 has a through hole 53 extending in the height direction between the first protruding portion 51 and the second protruding portion 52.

[0039] As shown in FIG. 8 , the inner cover 20 has a recess 54 with a width substantially equal to that of the cap 50. After the cap 50 is placed in the recess 54, the cap 50 is slid radially inward on the bottom surface of the recess 54, whereby the first protrusion 51 engages with the first cord restraining protrusion 23 and the second protrusion 52 engages with the second cord restraining member 24. In this state, the first protrusion 51 and the first cord restraining protrusion 23 cooperate to define a substantially L-shaped first cord accommodation passage that accommodates the first portion 85a of the first cord 85 and is open at both ends. The second protrusion 52 and the second cord restraining member 24 cooperate to define a substantially L-shaped second cord accommodation passage that accommodates a portion of the second cord 95 and is open at both ends. The first protrusion 51 and the first cord restraining protrusion 23 together form a first restraining portion 97 (see Figure 3), and the second protrusion 52 and the second cord restraining member 24 together form a third restraining portion 98 (see Figure 3).

[0040] With the cap 50 fitted with the first cord restraining protrusion 23 and the second cord restraining member 24, the cap 50 is screwed to the inner cover 20 using the through-hole 53 (see FIG. 14). The recess 54 (see FIG. 8) forms a cap guide for sliding the cap 50 in one direction relative to the inner cover 20. The cap does not have to be screwed to the inner cover, and may be press-fitted and fixed to the inner cover, for example.

[0041] As described above, the lighting fixture 1 includes an adapter (mounting portion) 5 that is attached to a fixture mounting portion provided on the ceiling of a building, a substrate 80 that is arranged to surround the adapter 5 and has one or more LED chips (light-emitting elements) mounted thereon, and an inner cover (optical cover) 20 that covers the one or more LED chips and diffuses light emitted by the one or more LED chips. A first cord 85 extends from the substrate 80 (substrate 80 side), and the first cord 85 includes one or more first wirings that are connected to any of a plurality of electronic components 84 mounted on the substrate 80 and are covered with an insulating member. The lighting fixture 1 also includes a first restraining portion 97 that restrains a first portion 85a of the first cord 85 that extends in an extension direction that includes at least a height direction extension component, and a second restraining portion 29 that is arranged at a location spaced apart from the first restraining portion 97 and that restrains a second portion 85b of the first cord 85.

[0042] According to the present disclosure, first cord 85 is restrained at two spaced apart locations, which limits the location of the long portion of first cord 85 and shortens the pulling allowance of first cord 85. This prevents people from accidentally pulling on first cord 85 when assembling or installing lighting fixture 1, and prevents damage to connector 84 connected to the wiring of first cord 85. Furthermore, it prevents first cord 85 from interfering with work when assembling or installing lighting fixture 1, improving workability when assembling or installing lighting fixture 1.

[0043] The second restraining portion 29 may also be provided on the inner cover 20.

[0044] According to the above configuration, the damage prevention structure for the connector 84 can be produced simply and inexpensively.

[0045] The second portion 85b may extend substantially parallel to the substrate 80.

[0046] According to this configuration, the connector 84 mounted on the substrate 80 and the first wiring in the first cord 85 can be connected smoothly and without strain, and damage to the connector 84 can be more effectively prevented.

[0047] Furthermore, a second cord 95, in which one or more second wirings connected to any of the plurality of electronic components 84 are covered with an insulating member, may extend from the board 80 (on the board 80 side). Also, a cap 50 may be provided that fits into one or more fitting members 20, 24 including the inner cover 20. Furthermore, the cap 50 may cooperate with the one or more fitting members 20, 24 to form a first restraining portion 97 and a third restraining portion 98 that restrains a portion of the second cord 95.

[0048] This configuration not only prevents damage to connector 84 connected to the first wiring of first cord 85, but also stabilizes the behavior of second cord 95 on the circuit board 80 side. Therefore, damage to the connector connected to the second wiring of second cord 95 can also be prevented.

[0049] The lighting fixture 1 also includes an adapter 5 attached to a fixture mounting portion provided on the ceiling of a building, a substrate 80 arranged to surround the adapter 5 and having one or more LED chips mounted thereon, and an inner cover 20 that covers the one or more LED chips and diffuses light emitted by the one or more LED chips. Two or more cords 85, 95 may extend from the substrate 80 (substrate 80 side), each cord 85, 95 having one or more wires connected to one of a plurality of electronic components 84 mounted on the substrate 80 and covered with an insulating member. The lighting fixture 1 may also include a cap 50 that fits into one or more fitting members 20, 24 including the inner cover 20 to define two or more restraining portions 97, 98 that, together with the one or more fitting members 20, 24, restrain a portion of each of the two or more cords 85, 95.

[0050] According to the present disclosure, the pulling length of each of the two or more cords 85, 95 can be easily shortened, thereby suppressing damage to the electronic components 84 connected to the wiring of the two or more cords 85, 95. Furthermore, the workability during assembly and installation of the lighting fixture 1 can be improved.

[0051] The inner cover 20 may also have a recess (cap guide portion) 54 for sliding the cap 50 in one direction relative to the inner cover 20 .

[0052] According to this configuration, the cap 50 can be fixed to the inner cover 20 smoothly and easily.

[0053] The present disclosure is not limited to the above-described embodiments and their modifications, and various improvements and modifications are possible within the scope of the claims of the present application and their equivalents. For example, the light-emitting element may be a chip of a light-emitting element other than an LED chip, or may be a chip of a semiconductor laser element, or a chip of a solid-state light-emitting element such as an organic EL (Electroluminescence) element or an inorganic EL element.

[0054] Also, the first cord 85 has been described as being used to electrically connect the motion sensor 7 and the connector 84 mounted on the board 80. However, the first cord may also be used to electrically connect an electrical appliance other than the motion sensor to an electronic component mounted on the board, for example, to an imaging device or a speaker to an electronic component mounted on the board. Also, by fixing a cap to the optical cover, a portion of each of three or more cables may be restrained, thereby forming three or more restraining portions.

[0055] Furthermore, the lighting device of the present disclosure may have the following configuration. Configuration 1: A lighting fixture comprising: a mounting portion to be attached to a fixture mounting portion provided on the ceiling of a building; a substrate arranged to surround the mounting portion and having one or more light-emitting elements mounted thereon; and an optical cover that covers the one or more light-emitting elements and diffuses light emitted by the one or more light-emitting elements, wherein a first cord having one or more first wirings connected to any of a plurality of electronic components mounted on the substrate and covered with an insulating material extends from the substrate (substrate side), and the lighting fixture has: a first restraining portion that restrains a first portion of the first cord extending in an extension direction that includes at least a height direction extension component; and a second restraining portion that is arranged at a location spaced from the first restraining portion and that restrains a second portion of the first cord. Configuration 2: The lighting device according to configuration 1, wherein the second restraint portion is provided on the optical cover. Configuration 3: The lighting device of configuration 1 or 2, wherein the second portion extends substantially parallel to the substrate. Configuration 4: A lighting device described in any one of configurations 1 to 3, comprising a second cord extending from the substrate (substrate side), the second cord having one or more second wirings connected to any of the plurality of electronic components covered with an insulating material, and a cap that engages with one or more engaging members including the optical cover to define, in combination with the one or more engaging members, the first restraining portion and a third restraining portion that restrains a portion of the second cord. Configuration 5: A lighting fixture comprising: a mounting section to be attached to a fixture mounting section provided on the ceiling of a building; a substrate arranged to surround the mounting section and having one or more light-emitting elements mounted thereon; and an optical cover that covers the one or more light-emitting elements and diffuses light emitted by the one or more light-emitting elements; two or more cords, each of which has a structure in which one or more wirings connected to one of a plurality of electronic components mounted on the substrate are covered with an insulating material, extending from (the side of) the substrate; and a cap that fits into one or more fitting members including the optical cover, thereby defining two or more restraining sections that, in combination with the one or more fitting members, restrain a portion of each of the two or more cords. Configuration 6: The lighting device according to configuration 5, further comprising a cap guide portion for sliding the cap in one direction relative to the optical cover. [Explanation of symbols]

[0056] REFERENCE SIGNS LIST 1 Lighting fixture, 5 Adapter, 5a Protrusion, 7 Human presence sensor, 7a Sensor surface, 8 Connecting fitting, 9 Screw, 10 Base member, 10a First through hole, 10b Second through hole, 20 Inner cover (fitting member), 20a Protrusion, 20b Hole, 21 Flange portion, 21a First thin portion, 21b First thick portion, 22 Underside, 23 First cord restraining protrusion, 23a Opening, 23b Plate-shaped portion, 23c Cord inlet, 23d Wall, 23e, 23f Wall portion, 23g Protrusion, 23h Cord outlet, 24 Second cord restraining member, 24a Recess, 24b Groove, 24c First groove portion, 24d Second groove portion, 25 L-shaped locking portion, 25a Claw portion, 27 Groove, 28 Internal chamber, 29 Second restraining portion, 29a Cord restraining portion, 30 Outer cover, 31 Through hole, 33 Protruding portion, 40 Receptacle, 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 Indentation, 48 Locking portion, 50 Cap, 51 First protruding portion, 51a First recessed portion, 52 Second protruding portion, 52a Second recessed portion, 53 Through hole, 54 Recessed portion, 70 Human sensor holding member, 71 Holding portion, 72 Pillar portion, 75 Mounting portion, 77 Rivet, 80 Board, 81 Electronic component, 82 Through hole, 84 electronic component, 84 connector, 85 first cord, 85a first portion, 85b second portion, 95 second cord, 97 first restraining portion, 98 third restraining portion.

Claims

1. a mounting portion to be attached to an appliance mounting portion provided on the ceiling of a building; a substrate on which one or more light-emitting elements are mounted, the substrate being disposed so as to surround the mounting portion; an optical cover that covers the one or more light-emitting elements and diffuses light emitted by the one or more light-emitting elements, a first cord extending from the substrate, the first cord having one or more first wirings connected to any of the plurality of electronic components mounted on the substrate and covered with an insulating member; a first restraining portion that restrains a first portion of the first cord extending in an extension direction that includes at least a height direction extension component, and a second restraining portion that is arranged at a location spaced apart from the first restraining portion and restrains a second portion of the first cord.

2. The lighting device according to claim 1 , wherein the second constraint portion is provided on the optical cover.

3. 3. A lighting device according to claim 1, wherein the second portion extends substantially parallel to the substrate.

4. a second cord extending from the substrate, the second cord having one or more second wirings connected to any of the plurality of electronic components and covered with an insulating member; 3. The lighting device according to claim 1, further comprising a cap that fits into one or more fitting members including the optical cover to define, in combination with the one or more fitting members, the first restraining portion and a third restraining portion that restrains a portion of the second cord.

5. a mounting portion to be attached to an appliance mounting portion provided on the ceiling of a building; a substrate on which one or more light-emitting elements are mounted, the substrate being disposed so as to surround the mounting portion; an optical cover that covers the one or more light-emitting elements and diffuses light emitted by the one or more light-emitting elements, Two or more cords extend from the substrate, each cord having a structure in which one or more wires connected to any of a plurality of electronic components mounted on the substrate are covered with an insulating material, A lighting device comprising a cap that fits into one or more fitting members including the optical cover to define two or more restraining portions that, together with the one or more fitting members, restrain respective portions of the two or more cords.

6. The lighting device according to claim 5 , further comprising a cap guide portion for sliding the cap in one direction relative to the optical cover.

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