Power supply device and luminaire

Abstract

To provide a power supply device capable of securing an insulation distance from a terminal of a connector to which an external wiring is electrically connected, and a lighting fixture equipped with the same.SOLUTION: The power supply device 1 includes a connector 2, a power supply unit 3, a circuit board 4, a case 5, and a connector cover 6. The connector 2 has terminals 21 to which external wirings L1 electrically connected to the light sources are detachably attached, and which are electrically connected to the external wirings L1 in a state where the external wirings L1 are attached. The power supply unit 3 supplies power to the light sources via the connector 2 and the external wire L1. The connector cover 6 is attached to the inner peripheral edge 531 of the opening 53 of the case 5 and covers at least the terminals 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates generally to a power supply device and a lighting fixture, and more particularly to a power supply device that supplies power to a light source and a lighting fixture including the same. [Background technology]

[0002] Patent Document 1 discloses a lighting device including a housing, a lighting circuit, a lighting device-side output wire, an output wire connector, and a connector protective cover. The lighting circuit is housed inside the housing and supplies power to a light-emitting unit that irradiates light and is provided outside the housing via the lighting device-side output wire and the light-emitting unit-side output wire. The lighting device-side output wire is provided outside the housing and connected to the lighting circuit. The output wire connector connects to the light-emitting unit-side output wire that is connected to the light-emitting unit. The connector protective cover is attached to the outside of the housing so as to cover the output wire connector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-129426 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting device described in Patent Document 1, a connector protective cover (connector cover) is attached to the outside of the housing so as to cover the lighting device output wire (external wiring) and the output wire connector (connector). However, it is thought that an insulation distance from the part of the output wire connector where the lighting device output wire is electrically connected cannot be ensured.

[0005] An object of the present disclosure is to provide a power supply device that can ensure an insulation distance from the terminal of a connector to which external wiring is electrically connected, and a lighting fixture that includes the same. [Means for solving the problem]

[0006] A power supply device according to one aspect of the present disclosure includes a connector, a power supply unit, a circuit board, a case, and a connector cover. The connector has a detachable external wiring electrically connected to a light source, and a terminal electrically connected to the external wiring when the external wiring is attached. The power supply unit supplies power to the light source via the connector and the external wiring. The connector and the power supply unit are mounted on the circuit board. The case has an opening and houses the circuit board. The connector cover is attached to the inner periphery of the opening and covers at least the terminal.

[0007] A lighting fixture according to one aspect of the present disclosure includes the power supply device described above, the light source, and a support portion that supports the light source. [Effects of the Invention]

[0008] According to the present disclosure, there is an advantage in that an insulation distance from the terminal of the connector to which the external wiring is electrically connected can be ensured. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view of a main part of a power supply device according to this embodiment, in which external wiring is attached to a connector. [Figure 2] FIG. 2 is a cross-sectional view of a main part of the power supply device in a state before external wiring is attached to a connector. [Figure 3] FIG. 3 is a diagram showing a schematic configuration of a lighting fixture including the power supply device. [Figure 4] FIG. 4 is an explanatory diagram illustrating how the connector cover is attached by being sandwiched between the first and second parts of the case in the power supply device. [Figure 5]FIG. 5 is an external perspective view of the power supply device of the same as above, showing a state in which external wiring is attached to a connector. [Figure 6] FIG. 6 is an external perspective view of the power supply device of the same as above, in a state before external wiring is attached to the connector. [Figure 7] FIG. 7 is an external perspective view of the power supply device according to the first modified example, with external wiring attached to the connector. [Figure 8] FIG. 8 is a cross-sectional view of a main part of the power supply device according to the first modified example of the same, showing a state in which external wiring is attached to a connector. [Figure 9] FIG. 9 is an explanatory diagram illustrating how a connector cover is attached to a power supply device according to a first modification of the first embodiment, with external wiring already attached to the connector. DETAILED DESCRIPTION OF THE INVENTION

[0010] The embodiments and modifications described below are merely examples of the present disclosure. The present disclosure is not limited to the embodiments and modifications, and various modifications other than these embodiments and modifications are possible depending on the design, etc., as long as they do not deviate from the technical concept of the present disclosure. The drawings described in the following embodiments and modifications are schematic drawings, and the ratios of the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0011] (Embodiment) (1) Overview An overview of a power supply device 1 according to this embodiment will be described below with reference to FIGS.

[0012] The power supply device 1 according to this embodiment supplies DC power to light a light source 91 (see FIG. 3) of a lighting fixture 100. As shown in FIGS. 1 and 2, the power supply device 1 according to this embodiment includes a connector 2, a power supply unit 3, a circuit board 4, a case 5, and a connector cover 6.

[0013] The connector 2 has an external wiring L1, which is electrically connected to the light source 91, removably attached thereto, and has terminals 21 that are electrically connected to the external wiring L1 when the external wiring L1 is attached. The power supply unit 3 supplies power to the light source 91 via the connector 2 and the external wiring L1. The connector 2 and the power supply unit 3 are mounted on the circuit board 4. The case 5 has an opening 53 and houses the circuit board 4. The connector cover 6 is attached to an inner peripheral edge 531 of the opening 53 and covers at least the terminals 21.

[0014] As described above, the power supply device 1 of this embodiment has the advantage of being able to ensure an insulation distance from the terminal 21 of the connector 2 to which the external wiring L1 is electrically connected.

[0015] (2) Detailed configuration (2-1) Lighting equipment The detailed configuration of lighting device 100 of this embodiment will be described below with reference to FIG.

[0016] As shown in FIG. 3, the lighting fixture 100 includes a power supply device 1, a light source 91, a support portion 92, and a pair of mounting springs 93.

[0017] The light source 91 is electrically connected to an external wiring L1, and is supplied with DC power from the power supply device 1 via the external wiring L1.

[0018] The light source 91 is, for example, a chip-on-board white LED for illumination. However, the light source 91 may also be a packaged white LED for illumination. The lighting device 100 may also include a plurality of light sources 91. The plurality of light sources 91 are preferably electrically connected in series or in series-parallel. The light source 91 may also be a solid-state light source other than an LED, such as an organic electroluminescence element.

[0019] The support portion 92 supports (i.e., holds) the light source 91. The support portion 92 is formed in a cylindrical shape with one open side and a bottom. The support portion 92 is formed to a size that can accommodate the light source 91 inside. In other words, the support portion 92 is the main body of the lighting device 100. An outward-protruding flange 921 is formed on the lower edge of the support portion 92.

[0020] Each of the pair of mounting springs 93 is formed, for example, in the shape of a curved band made of stainless steel plate. The pair of mounting springs 93 are preferably formed in the shape of a long leaf spring. One longitudinal end of each of the pair of mounting springs 93 is fixed to the side surface of the support part 92, and the other longitudinal end is configured to be flexible in a direction approaching the top surface of the support part 92 (upward).

[0021] Lighting fixture 100 is installed so as to be embedded in an indoor ceiling. That is, support part 92 and a pair of mounting springs 93 are inserted into a circular embedding hole provided in the ceiling, and support part 92 is attached to the ceiling by sandwiching the ceiling (ceiling material) between each of the pair of mounting springs 93 and flange 921. Power supply device 1 is placed above the ceiling through the embedding hole.

[0022] (2-2) Power supply device The detailed configuration of the power supply device 1 of this embodiment will be described below with reference to FIGS.

[0023] Note that the terms "up," "down," "left," "right," "front," and "rear" used in this disclosure merely represent the relative positional relationships of the components of the power supply device 1, and are not intended to limit the installation direction of the power supply device 1. The power supply device 1 may be installed in an orientation where "down" used in this disclosure refers to, for example, up, front, rear, left, or right. Also, although arrows representing up and down, left and right, and front and rear are shown in Figures 1, 2, etc., these arrows are merely used for explanation and do not have any substance.

[0024] The power supply device 1 supplies DC power via external wiring L1 to light the light source 91. As shown in FIGS. 1 and 2 , the power supply device 1 of this embodiment includes a connector 2, a power supply unit 3, a circuit board 4, a case 5, and a connector cover 6.

[0025] (circuit board) The circuit board 4 of this embodiment is a rectangular plate member. The thickness direction of the circuit board 4 is aligned with the vertical direction.

[0026] A connector 2 and a power supply unit 3 are mounted on the upper surface of the circuit board 4. In this embodiment, the connector 2 is mounted on one end (the right end) of the upper edge of the circuit board 4. The circuit board 4 is a printed wiring board having a conductor portion. The connector 2 and the power supply unit 3 are electrically connected via the conductor portion of the circuit board 4.

[0027] (Power supply section) When the external wiring L1 is attached to the connector 2 (see FIGS. 1 and 5), the power supply unit 3 supplies power to the light source 91 via the connector 2 and the external wiring L1. More specifically, the power supply unit 3 is electrically connected to an AC power source (not shown), and supplies DC power obtained by rectifying AC power supplied from the AC power source to the light source 91 via the connector 2 and the external wiring L1. The "AC power source" referred to here is, for example, a commercial power source.

[0028] (connector) As shown in FIGS. 1 and 2, the connector 2 has a main body 20, terminals 21, and protrusions 22.

[0029] The main body 20 is a rectangular box-like structure with one end (right end) open. A wiring connector L4 (described later) for the external wiring L1 is detachably attached inside the main body 20. The main body 20 accommodates a portion of the terminal 21 therein. In other words, the main body 20 holds the terminal 21.

[0030] The terminals 21 are electrically connected to the external wiring L1 when the external wiring L1 is attached to the main body 20 of the connector 2. The terminals 21 of this embodiment are made of a plurality of metal plates that are curved in an L shape when viewed from the front-to-rear direction. Each of the plurality of metal plates is formed to penetrate the left wall 201 of the main body 20. The lower end of each of the plurality of metal plates is inserted into a through-hole 41 formed in the circuit board 4 and is electrically connected to the conductor portion of the circuit board 4. In short, the terminals 21 of this embodiment are electrically connected to the power supply unit 3 by the lower end of each of the plurality of metal plates being electrically connected to the conductor portion of the circuit board 4.

[0031] As shown in FIGS. 1 and 2, the external wiring L1 includes a conductor portion L2, a covering portion L3, and a wiring connector L4. The conductor portion L2 has a first end L21 electrically connected to the terminal 21 of the connector 2 and a second end (not shown) electrically connected to the light source 91. In the present invention, "one end of the conductor portion L2" refers to the first end L21. The covering portion L3 is electrically insulating and covers the periphery of the conductor portion L2 so that the first end L21 and the second end of the conductor portion L2 are exposed. The wiring connector L4 covers the first end L21 and is configured to be detachable from the main body 20 of the connector 2. The wiring connector L4 is provided with a locking portion L41 that locks onto the protrusion 22.

[0032] The main body 20 (i.e., the connector 2) is formed so that the terminals 21 face openings 53 of the case 5, which will be described later, inside the case 5. The main body 20 may also be formed so that the terminals 21 are exposed to the outside of the case 5 through the openings 53 of the case 5. The above configuration has the advantage of making it easier to connect the external wiring L1 to the terminals 21.

[0033] 2, the protrusion 22 protrudes upward (i.e., toward the side away from the terminal 21) from the right end of the upper wall 202 of the main body 20. As shown in FIG. 1, the locking portion L41 of the wiring connector L4 of the external wiring L1 is locked with the protrusion 22, whereby the external wiring L1 is attached to the main body 20 of the connector 2.

[0034] (connector cover) The connector cover 6 is attached to the inner peripheral edge 531 of the opening 53 of the case 5, and covers the terminals 21 of the connector 2. More specifically, the connector cover 6 covers the terminals 21 of the connector 2 from the opening 53 side of the case 5 relative to the terminals 21 (i.e., from the right side). Specifically, the connector cover 6 covers the right opening in the main body 20 of the connector 2 that houses the terminals 21.

[0035] As shown in Figures 1 and 2, the connector cover 6 has a main body portion 60, a first protrusion portion 61, a second protrusion portion 62, a third protrusion portion 63, a fourth protrusion portion 64, and a guide portion 65.

[0036] The main body 60 is a cylindrical body having openings in the left-right direction. More specifically, the main body 60 is a cylindrical body having a rectangular frame shape when viewed from the left-right direction.

[0037] 1 and 2, each of the first protrusion 61 and the second protrusion 62 protrudes upward from the left end of the upper wall 691 of the main body 60. That is, each of the first protrusion 61 and the second protrusion 62 protrudes from the left end of the upper wall 691 of the main body 60 in a direction away from the upper wall 691 along the thickness direction of the upper wall 691.

[0038] The first protrusion 61 and the second protrusion 62 are aligned in the left-right direction. A gap is provided between the first protrusion 61 and the second protrusion 62 in the left-right direction, into which a second portion 52 (described later) of the case 5 is inserted. The first protrusion 61 in this embodiment is located to the right of the second protrusion 62.

[0039] As shown in Fig. 4, there are two second protrusions 62 in this embodiment. The two second protrusions 62 are aligned along the front-rear direction. The first protrusion 61 is provided in the center portion in the front-rear direction at the left end of the upper wall 691 of the main body 60. Of the two second protrusions 62, the front second protrusion 62 is provided in front of the first protrusion 61 in the front-rear direction. On the other hand, the rear second protrusion 62 of the two second protrusions 62 is provided behind the first protrusion 61 in the front-rear direction.

[0040] 1 and 2, the third protrusion 63 and the fourth protrusion 64 each protrude downward from the left end of the bottom wall 692 of the main body 60. That is, the third protrusion 63 and the fourth protrusion 64 each protrude from the left end of the bottom wall 692 of the main body 60 in a direction away from the bottom wall 692 along the thickness direction of the bottom wall 692.

[0041] The third protrusion 63 and the fourth protrusion 64 are aligned in the left-right direction. A gap is provided between the third protrusion 63 and the fourth protrusion 64 in the left-right direction, into which a first portion 51 (described later) of the case 5 is inserted. The third protrusion 63 in this embodiment is located to the right of the fourth protrusion 64.

[0042] In this embodiment, there are two fourth protrusions 64. The two fourth protrusions 64 are aligned along the front-to-rear direction. The third protrusion 63 is provided in the center portion in the front-to-rear direction at the left end of the bottom wall 692 of the main body 60. Of the two fourth protrusions 64, the front fourth protrusion 64 is provided in front of the third protrusion 63 in the front-to-rear direction. On the other hand, of the two fourth protrusions 64, the rear fourth protrusion 64 is provided behind the third protrusion 63 in the front-to-rear direction.

[0043] The external wiring L1 is detachable from the connector cover 6 (more specifically, the main body 60) when the connector cover 6 is attached to the inner periphery 531 of the opening 53 of the case 5. In other words, the connector cover 6 (more specifically, the main body 60) is formed so that the external wiring L1 is detachable from the connector 2 when the connector cover 6 is attached to the inner periphery 531 of the opening 53 of the case 5. Specifically, the connector cover 6 is formed so that, when the connector cover 6 is attached to the inner periphery 531 of the opening 53 of the case 5, the external wiring L1 is attached to the connector 2 from the right along the first direction X1 (see FIGS. 1 and 5) and detached from the connector 2 to the right along the first direction X1 (see FIGS. 2 and 6). In other words, the main body 60 is formed so that its interior has dimensions that allow the wiring connector L4 of the external wiring L1 to be inserted therethrough and has a uniform shape in the left-right direction. The above configuration has the advantage that the external wiring L1 can be attached to and detached from the connector 2 without removing the connector cover 6.

[0044] The guide portion 65 guides (introduces) the wiring connector L4 to the connector 2 when the wiring connector L4 is attached to the connector 2. More specifically, the guide portion 65 guides the wiring connector L4 to the terminals 21 of the connector 2 when the wiring connector L4 is attached to the main body 20 of the connector 2. As shown in FIGS. 2 and 6 , the guide portion 65 in this embodiment is the inner surface of the main body 60. That is, when the wiring connector L4 is attached to the main body 20 of the connector 2, the wiring connector L4 is inserted into the main body 60 and then abuts against the inner surface of the main body 60, thereby being guided toward the terminals 21 of the connector 2, and therefore the inner surface of the main body 60 functions as the guide portion 65. The above configuration has the advantage of making it easier to attach and detach the external wiring L1 to and from the connector 2.

[0045] The connector cover 6 (more specifically, the main body 60) covers the first end L21 of the conductor portion L2 of the external wiring L1 and at least a portion of the covering portion L3 (more specifically, the left end of the covering portion L3) when the external wiring L1 is attached to the connector 2. More specifically, the connector cover 6 covers the wiring connector L4 of the external wiring L1 and the left end of the covering portion L3 when the external wiring L1 is attached to the connector 2. This configuration has the advantage of ensuring an insulation distance from the first end L21 of the conductor portion L2 of the external wiring L1 that is not covered by the covering portion L3.

[0046] The connector cover 6 is made of an elastic material. The elastic material here is, for example, a resin material or a rubber material. With this configuration, the connector cover 6 is attached to the opening 53 of the case 5 in a slightly contracted state. This has the advantage of preventing a gap from forming between the connector cover 6 and the opening 53 of the case 5.

[0047] Furthermore, the connector cover 6 of this embodiment has electrical insulation properties. That is, the connector cover 6 of this embodiment is formed of an elastic material having electrical insulation properties. Here, "electrical insulation properties" refers to the property of making it difficult for electricity to pass through. This configuration has the advantage of more reliably ensuring an insulation distance from the terminal 21 of the connector 2 to which the external wiring L1 is electrically connected.

[0048] (case) The case 5 houses the circuit board 4. That is, the case 5 houses the connector 2 and the power supply unit 3 mounted on the circuit board 4. The case 5 is formed into a rectangular parallelepiped shape from a plate material of a ferromagnetic metal (such as stainless steel or galvanized steel).

[0049] The case 5 has an opening 53 through which the external wiring L1 is inserted. The external wiring L1 inserted through the opening 53 is attached to the connector 2. A connector cover 6 is attached to an inner peripheral edge 531 of the opening 53.

[0050] The case 5 of this embodiment has a first portion 51 and a second portion 52. The first portion 51 is the lower portion of the case 5, more specifically, a portion that includes the bottom wall and part of the side walls of the case 5. The second portion 52 is the upper portion of the case 5, more specifically, a portion that includes the top wall and part of the side walls of the case 5. Note that the "side walls" here refer to the front wall, rear wall, left wall, and right wall. The case 5 is formed by attaching the second portion 52 to the first portion 51 by screwing or the like. The opening 53 is provided between the first portion 51 and the second portion 52.

[0051] 4 , the connector cover 6 of this embodiment is attached to the inner peripheral edge 531 of the opening 53 by being sandwiched between the first portion 51 and the second portion 52. More specifically, the connector cover 6 is placed above the first portion 51 so as to cover the terminals 21 of the connector 2, and then the second portion 52 is attached to the first portion 51 by screwing or the like, thereby attaching the connector cover 6 to the inner peripheral edge 531 of the opening 53. This configuration has the effect of making it easier to prevent a gap from being formed between the case 5 and the connector cover 6. As a result, there is an advantage in that it is possible to prevent foreign matter and the like from entering the inside of the case 5 through a gap between the case 5 and the connector cover 6.

[0052] 1 and 2, when the connector cover 6 is attached to the inner peripheral edge 531 of the opening 53, the first portion 51 is sandwiched between the third protrusion 63 and the fourth protrusion 64 of the connector cover 6, and the second portion 52 is sandwiched between the first protrusion 61 and the second protrusion 62 of the connector cover 6. This configuration has the advantage of being able to prevent foreign matter and the like from entering the interior of the case 5 through the gap between the case 5 and the connector cover 6.

[0053] The case 5 has a pair of support bases 81 that support the case 5. The pair of support bases 81 are provided at positions facing each other in the left-right direction. Of the pair of support bases 81, the left support base 81 is provided at the left end of the first section 51, and the right support base 81 of the pair of support bases 81 is provided at the right end of the first section 51.

[0054] (3) Effects The power supply device 1 according to this embodiment includes a connector cover 6 that is attached to the inner peripheral edge 531 of the opening 53 of the case 5 and covers at least the terminals 21 of the connector 2. This has the advantage of ensuring an insulation distance from the terminals 21 of the connector 2 to which the external wiring L1 is electrically connected.

[0055] In the power supply device 1 according to this embodiment, the terminal 21 is formed inside the case 5 so as to face the opening 53 of the case 5, or the terminal 21 is formed inside the case 5 so as to face the opening 53 of the case 5. This has the advantage that it becomes easier to connect the external wiring L1 to the terminal 21.

[0056] In the power supply device 1 according to this embodiment, the case 5 has a first portion 51 and a second portion 52, and the connector cover 6 is attached to the inner peripheral edge 531 of the opening 53 by being sandwiched between the first portion 51 and the second portion 52. This has the advantage of preventing foreign matter and the like from entering the inside of the case 5 through the gap between the case 5 and the connector cover 6.

[0057] In the power supply device 1 according to this embodiment, the connector cover 6 is made of an elastic material, which has the advantage of preventing a gap from being formed between the connector cover 6 and the opening 53 of the case 5.

[0058] In the power supply device 1 according to this embodiment, the connector cover 6 is formed so that the external wiring L1 can be attached to and detached from the connector 2 when the connector cover 6 is attached to the inner peripheral edge 531 of the opening 53 of the case 5. This has the advantage that the external wiring L1 can be attached to and detached from the connector 2 without removing the connector cover 6.

[0059] In the power supply device 1 according to this embodiment, the connector cover 6 has a guide portion 65 that guides the wiring connector L4 to the connector 2 when the wiring connector L4 is attached to the connector 2. This has the advantage of making it easier to attach and detach the external wiring L1 to and from the connector 2.

[0060] In the power supply device 1 according to this embodiment, the connector cover 6 covers the first end L21 of the conductor portion L2 of the external wiring L1 and at least a part of the covering portion L3 when the external wiring L1 is attached to the connector 2. This has the advantage of ensuring an insulation distance from the first end L21 of the conductor portion L2 of the external wiring L1 that is not covered by the covering portion L3.

[0061] In the power supply device 1 according to this embodiment, the connector cover 6 has electrical insulation properties, which has the advantage of more reliably ensuring an insulation distance from the terminal 21 of the connector 2 to which the external wiring L1 is electrically connected.

[0062] (4) Variations The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. The following modifications may be implemented in appropriate combination. The same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0063] (4-1) First Modification In the power supply device 1 of the embodiment described above, the connector cover 6 is formed so that the external wiring L1 is detachable from the connector 2 when the connector cover 6 is attached to the inner periphery 531 of the opening 53 of the case 5. However, as shown in FIGS. 7 to 9, in the power supply device 1A of the first modified example, the connector cover 6A is not formed so that the external wiring L1 is detachable from the connector 2 when the connector cover 6A is attached to the inner periphery 531 of the opening 53 of the case 5. In other words, in the power supply device 1A of the first modified example, the connector cover 6A is attachable to the inner periphery 531 of the opening 53 of the case 5 when the external wiring L1 is attached to the connector 2.

[0064] The detailed configuration of the power supply device 1A of the first modified example will be described below.

[0065] As shown in FIGS. 7 to 9, the power supply device 1A of the first modified example includes a connector 2, a power supply unit 3, a circuit board 4, a case 5, and a connector cover 6A.

[0066] The connector cover 6A is attached to the inner peripheral edge 531 of the opening 53 of the case 5, and covers the terminals 21 of the connector 2. More specifically, the connector cover 6A covers the terminals 21 of the connector 2 from the side of the opening 53 of the case 5 relative to the terminals 21 (i.e., from the right side). Specifically, the connector cover 6A covers the opening of the main body 20 that houses the terminals 21.

[0067] As shown in FIG. 8, the connector cover 6A has a main body 60A, a first protrusion 61, a second protrusion 62, a third protrusion 63, and a fourth protrusion 64.

[0068] As shown in Figure 8, the main body 60A is a cylindrical body having an inner surface that follows the outer shape of the wiring connector L4 of the external wiring L1 exposed from the opening 53 of the case 5 when the external wiring L1 is attached to the main body 20 of the connector 2.

[0069] More specifically, as shown in FIGS. 7 and 8, the main body 60A has a first portion 601A, a second portion 602A, and a third portion 603A.

[0070] The first portion 601A has a rectangular box shape with an opening on the left side. The second portion 602A has a rectangular box shape with an opening on the left side, and the front-rear dimension of the second portion 602A is smaller than the front-rear dimension of the first portion 601A. The second portion 602A is provided in the center portion of the top surface of the first portion 601A in the front-rear direction. The interiors of the first portion 601A and the second portion 602A are connected or continuous, and the inner surfaces of the first portion 601A and the second portion 602A follow the outline of the wiring connector L4 of the external wiring L1 exposed from the opening 53 of the case 5 when the external wiring L1 is attached to the main body 20 of the connector 2. A through-hole is provided in the right wall of the first portion 601A, through which the conductor portion L2 and the covering portion L3 of the external wiring L1 are inserted when the external wiring L1 is attached to the main body 20 of the connector 2. The inner diameter of the through hole of the first portion 601A follows the outer shape of the covering portion L3 of the external wiring L1, and more specifically, is elliptical.

[0071] The third portion 603A protrudes rightward from the inner periphery of the first portion 601A, which defines the through-hole. The third portion 603A is a cylinder having an opening in the left-right direction. The inner surface of the third portion 603A conforms to the outer shape of the covering portion L3 of the external wiring L1, and more specifically, is elliptical. That is, when the external wiring L1 is attached to the main body 20 of the connector 2, the conductor portion L2 and covering portion L3 of the external wiring L1 are inserted into the third portion 603A.

[0072] Due to the shape of the main body 60A described above, the connector cover 6A is not formed so that the external wiring L1 is detachable from the connector 2 when the connector cover 6A is attached to the inner peripheral edge 531 of the opening 53 of the case 5, but is attachable to the inner peripheral edge 531 of the opening 53 of the case 5 when the external wiring L1 is attached to the connector 2. More specifically, as shown in FIG. 9 , when the external wiring L1 is attached to the connector 2, the connector cover 6A is attached to the connector 2 from the right side along the second direction X2 after the external wiring L1 is inserted through the third portion 603A. Thereafter, the connector cover 6A is attached to the inner peripheral edge 531 of the opening 53 by attaching the second portion 52 to the first portion 51 along the third direction X3 by screwing or the like. This configuration has the effect of reducing the gap between the connector cover 6 and the external wiring L1 (the covered portion L3 thereof). As a result, there is an advantage that foreign matter or the like can be prevented from entering the inside of the case 5 through the gap between the connector cover 6 and the external wiring L1.

[0073] The first protrusion 61 of the first modified example protrudes upward from the left end of the upper wall of the second portion 602A. Similarly, the second protrusion 62 protrudes upward from the left end of the upper wall of the first portion 601A. The first modified example has two second protrusions 62. The two second protrusions 62 are aligned along the front-to-rear direction. The front second protrusion 62 of the two second protrusions 62 is provided in front of the portion of the first portion 601A where the second portion 602A is provided in the front-to-rear direction, and the rear second protrusion 62 of the two second protrusions 62 is provided behind the portion of the first portion 601A where the second portion 602A is provided in the front-to-rear direction. Note that other configurations of the first protrusion 61 and the second protrusion 62 of the first modified example are similar to those of the first protrusion 61 and the second protrusion 62 of the above-described embodiment, and therefore description thereof will be omitted.

[0074] Similarly, the third protrusion 63 of the first modified example protrudes downward from the left end of the lower wall of the second portion 602A. Similarly, the fourth protrusion 64 protrudes downward from the left end of the lower wall of the first portion 601A. The first modified example has two fourth protrusions 64. The two fourth protrusions 64 are aligned along the front-to-rear direction. The front fourth protrusion 64 of the two fourth protrusions 64 is provided in front of the portion of the first portion 601A where the second portion 602A is provided in the front-to-rear direction, and the rear fourth protrusion 64 of the two fourth protrusions 64 is provided behind the portion of the first portion 601A where the second portion 602A is provided in the front-to-rear direction. Note that other configurations of the third protrusion 63 and the fourth protrusion 64 of the first modified example are similar to those of the third protrusion 63 and the fourth protrusion 64 of the embodiment described below, and therefore description thereof will be omitted.

[0075] The connector cover 6A (more specifically, the main body 60) covers the first end L21 of the conductor portion L2 of the external wiring L1 and at least a portion of the covering portion L3 (more specifically, the left end of the covering portion L3) when the external wiring L1 is attached to the connector 2. More specifically, the connector cover 6A covers the wiring connector L4 of the external wiring L1 and the left end of the covering portion L3 when the external wiring L1 is attached to the connector 2. This configuration has the advantage of ensuring an insulation distance from the first end L21 of the conductor portion L2 of the external wiring L1 that is not covered by the covering portion L3.

[0076] The connector cover 6A is made of an elastic material. The elastic material here is, for example, a resin material or a rubber material. With this configuration, the connector cover 6A is attached to the opening 53 of the case 5 in a slightly contracted state. This has the advantage of preventing a gap from forming between the connector cover 6A and the opening 53 of the case 5.

[0077] Furthermore, the connector cover 6A has electrical insulation properties. That is, the connector cover 6A of this embodiment is made of an elastic material having electrical insulation properties. This configuration has the advantage of more reliably ensuring an insulation distance from the terminals 21 of the connector 2 to which the external wiring L1 is electrically connected.

[0078] (4-2) Other Modifications Other variations of the above-described embodiment are listed below. The following variations may be realized in appropriate combination.

[0079] In the above-described embodiment, the connector cover 6 is attached to the inner peripheral edge 531 of the opening 53 of the case 5 by being sandwiched between the first part 51 and the second part 52. However, if the connector cover 6 is made of an elastic material, it may be press-fitted into the opening 53 of the case 5. That is, the connector cover 6 may be attached to the inner peripheral edge 531 of the opening 53 by being press-fitted into the opening 53 of the case 5. This configuration has the advantage that the connector cover 6 can be easily attached to the inner peripheral edge 531 of the opening 53 of the case 5.

[0080] (summary) A power supply device (1, 1A) of a first aspect includes a connector (2), a power supply unit (3), a circuit board (4), a case (5), and a connector cover (6, 6A). The connector (2) is detachably attached to an external wiring (L1) electrically connected to a light source (91), and has a terminal (21) electrically connected to the external wiring (L1) when the external wiring (L1) is attached. The power supply unit (3) supplies power to the light source (91) via the connector (2) and the external wiring (L1). The connector (2) and the power supply unit (3) are mounted on the circuit board (4). The case (5) has an opening (53) and accommodates the circuit board (4). The connector cover (6, 6A) is attached to an inner peripheral edge (531) of the opening (53) and covers at least the terminal (21).

[0081] This embodiment has the advantage that an insulation distance from the terminal 21 of the connector 2 to which the external wiring L1 is electrically connected can be ensured.

[0082] In the power supply device (1, 1A) of the second aspect, in the first aspect, the connector (2) is provided so that the terminal (21) faces the opening (53) inside the case (5) or so that the terminal (21) is exposed to the outside of the case (5) through the opening (53).

[0083] This embodiment has the advantage that the external wiring (L1) can be easily connected to the terminal (21).

[0084] In the power supply device (1, 1A) of the third aspect, in the first or second aspect, the case (5) has a first portion (51) and a second portion (52). The connector cover (6, 6A) is attached to the inner peripheral edge (531) by being sandwiched between the first portion (51) and the second portion (52).

[0085] This embodiment has the advantage that it is possible to prevent foreign matter and the like from entering the inside of the case (5) through the gap between the case (5) and the connector cover (6, 6A).

[0086] In the power supply device (1, 1A) of the fourth aspect, in the first or second aspect, the connector cover (6, 6A) is made of an elastic material.

[0087] This embodiment has the advantage that it is possible to prevent a gap from being formed between the connector cover (6, 6A) and the opening (53) of the case (5).

[0088] In the power supply device (1, 1A) of the fifth aspect, the connector cover (6, 6A) in the third aspect is press-fitted into the opening (53).

[0089] This embodiment has the advantage that the connector cover (6, 6A) can be easily attached to the inner peripheral edge (531) of the opening (53) of the case (5).

[0090] In the power supply device (1) of the sixth aspect, in any one of the first to fifth aspects, the connector cover (6) is formed so that the external wiring (L1) can be attached to and detached from the connector (2) when the connector cover (6) is attached to the inner peripheral edge (531).

[0091] This embodiment has the advantage that the external wiring (L1) can be attached to and detached from the connector (2) without removing the connector cover (6).

[0092] In the power supply device (1) of the seventh aspect, in the sixth aspect, the external wiring (L1) includes a conductor portion (L2) and a wiring connector (L4). The conductor portion (L2) has one end electrically connected to the terminal (21). The wiring connector (L4) covers the one end and is configured to be detachable from the connector (2). The connector cover (6) has a guide portion that guides the wiring connector (L4) to the connector (2) when the wiring connector (L4) is attached to the connector (2).

[0093] This embodiment has the advantage that the external wiring (L1) can be easily attached to and detached from the connector (2).

[0094] In the power supply device (1A) of the eighth aspect, in any one of the first to fifth aspects, the connector cover (6A) can be attached to the inner peripheral edge (531) in a state where the external wiring (L1) is attached to the connector (2).

[0095] This embodiment has the advantage that foreign matter can be prevented from entering the inside of the case (5) through the gap between the connector cover (6, 6A) and the external wiring (L1).

[0096] In the power supply device (1, 1A) of a ninth aspect, in any one of the first to eighth aspects, the external wiring (L1) includes a conductor portion (L2) and a covering portion (L3). The conductor portion (L2) has one end electrically connected to the terminal (21). The covering portion (L3) has electrical insulation properties and covers the periphery of the conductor portion (L2) so that the one end is exposed. The connector cover (6, 6A) covers the one end and at least a part of the covering portion (L3) when the external wiring (L1) is attached to the connector (2).

[0097] This embodiment has the advantage that it is possible to ensure an insulation distance from the one end of the external wiring (L1) that is not covered by the covering portion (L3) of the conductive portion.

[0098] In the power supply device (1, 1A) of the tenth aspect, in any one of the first to ninth aspects, the connector cover (6, 6A) has electrical insulation properties.

[0099] This embodiment has the advantage that the insulation distance from the terminal 21 of the connector 2 to which the external wiring L1 is electrically connected can be more reliably secured.

[0100] A lighting fixture (100) of an eleventh aspect includes a power supply device (1, 1A) according to any one of the first to eighth aspects, a light source (91), and a support (92) that supports the light source (91).

[0101] This embodiment has the advantage of being able to provide a lighting fixture that can ensure an insulation distance from the terminal (21) of the connector (2) to which the external wiring (L1) is electrically connected. [Explanation of symbols]

[0102] 100 lighting fixtures 1, 1A power supply 2 connectors 21 terminals 3 Power supply section 4 Circuit Board 5 cases 51 Part 1 52 Part 2 53 Aperture 531 Inner edge 6, 6A connector cover 65 Guide part 91 Light source 92 Support part L1 external wiring L2 conductor section L3 coating L4 wiring connector

Claims

1. a connector to which an external wiring electrically connected to the light source is detachably attached, the connector having a terminal electrically connected to the external wiring when the external wiring is attached; a power supply unit that supplies power to the light source via the connector and the external wiring; a circuit board on which the connector and the power supply unit are mounted; a case having an opening and accommodating the circuit board; a connector cover attached to an inner peripheral edge of the opening and covering at least the terminals, power supply.

2. The connector is provided so that the terminals face the opening inside the case, or so that the terminals are exposed to the outside of the case through the opening. The power supply device of claim 1 .

3. the case has a first portion and a second portion; The connector cover is attached to the inner peripheral edge by being sandwiched between the first part and the second part. The power supply device of claim 1 .

4. The connector cover is made of an elastic material. The power supply device of claim 1 .

5. The connector cover is press-fitted into the opening. The power supply device according to claim 3.

6. the connector cover is formed so that the external wiring can be attached to and detached from the connector when the connector cover is attached to the inner peripheral edge. The power supply device according to any one of claims 1 to 5.

7. The external wiring is a conductor portion having one end electrically connected to the terminal; a wiring connector that covers the one end and is configured to be detachably attached to the connector, The connector cover has a guide portion that guides the wiring connector to the connector when the wiring connector is attached to the connector.

7. The power supply device according to claim 6.

8. The connector cover is attachable to the inner peripheral edge in a state where the external wiring is attached to the connector. The power supply device according to any one of claims 1 to 5.

9. The external wiring is a conductor portion having one end electrically connected to the terminal; a covering portion having electrical insulation properties and covering the periphery of the conductor portion so that the one end is exposed; The connector cover covers the one end and at least a part of the covering portion when the external wiring is attached to the connector. The power supply device of claim 1 .

10. The connector cover has electrical insulation properties. The power supply device of claim 1 .

11. The power supply device according to any one of claims 1 to 5; the light source; a support portion that supports the light source, Lighting fixtures.

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