Feeding socket and illumination device

Abstract

To improve the electrical connection between a feeding terminal and a conducting part.SOLUTION: A feeding socket 300 comprises a first insertion part 320, a conducting part 330, a guide part 340, and a second insertion part 350. The first insertion part 320 has a first insertion hole 321 into which a feeding terminal 120 is inserted. The guide part 340 has a guide hole 341 that is connected with the first insertion hole 321 and guides the feeding terminal 120 from the insertion part 320 to the conducting part 330. The second insertion part 350 is inserted with a projection 130 during connection operations. The second insertion part 350 has a second insertion hole 351 and a regulation part 353. The second insertion hole 351 is inserted with the projection 130. The regulation part 353 regulates a movement of the projection 130 in a second direction. Upon contact of the projection 130 with the regulation part 353, a light source unit 10 is held in the feeding socket 300.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a power supply socket and a lighting device, and more particularly to a power supply socket that supplies power to a light source unit and a lighting device that includes the power supply socket. [Background technology]

[0002] Conventionally, lighting devices configured by mounting a lamp unit in a socket have been known. For example, Patent Document 1 discloses a socket in which a power supply terminal pin provided on the lamp unit is sandwiched between a pair of terminal portions at the end of a pin groove provided on the socket, thereby simultaneously supporting and electrically connecting the lamp unit to the socket. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2012 / 005244 Summary of the Invention [Problem to be solved by the invention]

[0004] In the socket (power supply socket) described in Patent Document 1, the pair of terminal portions (conductive portions) are conductive, so even before the power supply terminal pin (power supply terminal) is held by the pair of terminal portions at the end of the pin groove, the power supply terminal pin may come into contact with the pair of terminal portions, causing the lamp unit to light up. Therefore, if the power supply terminal pin is used without being held by the pair of terminal portions at the end of the pin groove, the electrical connection between the power supply terminal pin and the pair of terminal portions may be weakened.

[0005] The present disclosure aims to provide a power supply socket and a lighting device that can improve the electrical connection between the power supply terminal and the conductive portion. [Means for solving the problem]

[0006] A power feed socket according to one aspect of the present disclosure is a power feed socket that feeds power to a light source unit having a power feed terminal and a protrusion. The power feed unit includes a first insertion portion, a conductive portion, a guide portion, and a second insertion portion. The first insertion portion has a first insertion hole into which the power feed terminal is inserted. The conductive portion is electrically connected to the power feed terminal. The guide portion is connected to the first insertion hole and has a guide hole that guides the power feed terminal from the insertion portion to the conductive portion. The protrusion is inserted into the second insertion portion during a connection operation to electrically connect the power feed terminal to the conductive portion. The second insertion portion has a second insertion hole and a restricting portion. The protrusion is inserted into the second insertion hole. The restricting portion restricts movement of the protrusion in a second direction opposite to a first direction in which the power feed terminal is inserted into the first insertion hole. The power feed socket holds the light source unit when the protrusion comes into contact with the restricting portion.

[0007] An illumination device according to one aspect of the present disclosure includes the power feed socket and the light source unit detachably attached to the power feed socket. [Effects of the Invention]

[0008] According to the power feed socket and lighting device according to the above aspect, the electrical connection between the power feed terminal and the conductive portion can be improved. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a lighting device according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the lighting device. [Figure 3] FIG. 3 is a perspective view of a light source unit in the lighting device. [Figure 4] FIG. 4 is a perspective view of a power supply socket in the lighting device. [Figure 5] FIG. 5 is a cross-sectional view of a power supply socket in the lighting device. [Figure 6]FIG. 6 is a perspective view of the lighting device of the same as above, showing a state in which the light source unit is attached to a power supply socket. [Figure 7] FIG. 7 is a perspective view of a power supply socket in a lighting device according to a first modification of the embodiment. [Figure 8] FIG. 8 is a cross-sectional view of a power supply socket in the lighting device. [Figure 9] FIG. 9 is a perspective view of the lighting device of the same as above, showing a state in which the light source unit is attached to a power supply socket. [Figure 10] FIG. 10 is a perspective view of a power supply socket in a lighting device according to the second modification of the embodiment. [Figure 11] FIG. 11 is a cross-sectional view of a power supply socket in the lighting device. [Figure 12] FIG. 12 is a perspective view of the lighting device of the same as above, showing a state in which the light source unit is attached to a power supply socket. DETAILED DESCRIPTION OF THE INVENTION

[0010] A power socket and a lighting device according to embodiments of the present disclosure will be described below with reference to the drawings. Each of the embodiments described below represents a preferred specific example of the present disclosure. Therefore, the numerical values, materials, components, component arrangements, connection configurations, processes, and process sequences shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Therefore, any components in the following embodiments that are not recited in the independent claims that represent the overall concept of the present disclosure will be described as optional components. The drawings referenced in the following embodiments are schematic and are not necessarily rigorous illustrations. In other words, the size and thickness ratios of each component in the drawings do not necessarily reflect the actual dimensional ratios.

[0011] (1) Description of the embodiment Hereinafter, a lighting device 1 according to an embodiment of the present disclosure will be described. Fig. 1 is a perspective view of the lighting device 1 according to the embodiment. Fig. 2 is a cross-sectional view of the lighting device 1 according to the embodiment. The lighting device 1 is, for example, a downlight that is recessed into the ceiling of a house or the like and emits light downward, but is not limited to a downlight and may be, for example, a spotlight.

[0012] 1 and 2, the lighting device 1 includes a light source unit 10 and a fixture body 20. The lighting device 1 also includes a terminal block 30 and a pair of mounting springs 40. The fixture body 20 has an attachment member 210, a cover member 220, and a power feed socket 300. That is, the lighting device 1 includes the power feed socket 300 and the light source unit 10 that is detachably attached to the power feed socket 300. Each component of the lighting device 1 will be described in detail below.

[0013] In the following description, the front-rear, left-right, and up-down directions indicated by arrows in Fig. 1 are defined as the front-rear, left-right, and up-down directions of the lighting device 1 and its components. However, these directions are not intended to limit the directions of the lighting device 1 and its components when in use. Furthermore, the arrows indicating "front," "rear," "left," "right," "up," and "down" in Fig. 1 are merely shown for the purpose of explanation and do not have any physical substance.

[0014] (1.1) Light source unit FIG. 3 is a perspective view of the light source unit 10 in the lighting device 1 according to the embodiment. As shown in FIG. 3, the light source unit 10 has a main body 110, a plurality of (two in the illustrated example) power supply terminals 120, a protrusion 130, and a light source (not shown). The light source has, for example, one or more LEDs (Light Emitting Diodes). As shown in FIG. 2, the light source unit 10 is detachably attached to a power supply socket 300. External commercial power is input to the power supply socket 300 via a power cable. The power input to the power supply socket 300 is supplied to the light source unit 10.

[0015] The main body 110 is formed in a cylindrical shape with its axis extending in the vertical direction. The main body 110 has a base surface 111. The base surface 111 is the upper surface of the main body 110 and has a circular shape when viewed from above. As will be described later, the base surface 111 is provided with a plurality of power supply terminals 120 and protrusions 130.

[0016] 3, each of the multiple power supply terminals 120 is provided to extend upward from the base surface 111 of the main body 110. Each power supply terminal 120 is a terminal that receives power from outside the light source unit 10 to cause the light source section of the light source unit 10 to emit light. Each power supply terminal 120 receives power from the power supply socket 300 when the light source unit 10 is attached to the power supply socket 300.

[0017] Each power supply terminal 120 has a small diameter portion 121 and a large diameter portion 122. The small diameter portion 121 is a round bar-shaped portion extending upward from the base surface 111 of the main body 110. The large diameter portion 122 is a disk-shaped portion extending upward from the tip (top end) of the small diameter portion 121. In a plan view from above, the diameter D2 (see FIG. 5) of the large diameter portion 122 is larger than the diameter D1 (see FIG. 5) of the small diameter portion 121. The light source unit 10 is attached to the power supply socket 300 by inserting the large diameter portion 122 of each power supply terminal 120 into a first insertion hole 321 of the power supply socket 300 (described later) and rotating the light source unit 10 by a predetermined angle. That is, the power supply terminal 120 has the large diameter portion 122, which is an insertion portion that is inserted through the first insertion hole 321.

[0018] The multiple power supply terminals 120 are provided at positions that are point-symmetric with respect to the center of the protrusion 130 that is located at the center of the base surface 111 of the main body 110. This enables the power supply socket 300 to hold the light source units 10 evenly.

[0019] As shown in Fig. 3, the protrusion 130 is provided so as to extend upward from the base surface 111 of the main body 110. The protrusion 130 is inserted into a second insertion hole 351 (see Fig. 4) of the power supply socket 300, which will be described later. The protrusion 130 is formed in a cylindrical shape with its axial direction extending in the vertical direction. The protrusion 130 forms a storage space that stores, for example, a capacitor or the like, which is a circuit element of the light source unit 10.

[0020] As shown in FIG. 3 , the protrusion 130 has a pair of protrusions 131 on its side surface. The pair of protrusions 131 protrude in the radial direction of the main body 110. More specifically, the pair of protrusions 131 are provided at positions that are point-symmetric with respect to the center of the protrusion 130. That is, the protrusion 130 has the protrusion 131 protruding in a second direction that intersects with the first direction, which includes the first and second directions. Each of the pair of protrusions 131 is inserted into a pair of grooves 352 of the power feed socket 300 (described later). By rotating the light source unit 10 clockwise, the pair of protrusions 131 come into contact with a restricting portion 353 of the power feed socket 300 (described later). The first direction is the direction in which the power feed terminal 120 is inserted into a first insertion hole 321 of the first insertion portion 320 (described later), and is upward in this embodiment. The second direction is opposite to the first direction and is downward in this embodiment. Therefore, the first direction, which includes the first and second directions, is the up-down direction in this embodiment.

[0021] As described above, the pair of protrusions 131 are provided on the side surfaces of the protrusion 130 at positions facing each other in the radial direction of the protrusion 130. Specifically, the pair of protrusions 131 are provided at positions where the line segment connecting the pair of protrusions 131 and the line segment connecting the plurality of power feeding elements 120 are approximately perpendicular to each other. This allows the support points of the light source units 10 in the power feeding socket 300 to be evenly distributed, enabling the power feeding socket 300 to hold the light source units 10 evenly.

[0022] (1.2) Device body 1 and 2, the fixture body 20 has an attachment member 210, a cover member 220, and a power supply socket 300. Each component of the fixture body 20 will be described in detail below.

[0023] (1.2.1) Mounting parts 1 and 2, the mounting member 210 is a member that is attached to the bottom (top) and side surfaces of the cover member 220. A terminal block 30 is attached to the mounting member 210, and supplies power from an external power source to the power feeding socket 300.

[0024] (1.2.2) Cover member As shown in FIG. 2, the cover member 220 is a cover that covers the light source unit 10 and the like. The cover member 220 is formed in a cylindrical shape with a bottom and an open bottom. The cover member 220 functions as a mounting member to which the light source unit 10 is attached, and also functions as a heat sink (heat dissipation member) that dissipates heat generated by the light source unit 10. The cover member 220 is made of a material with high thermal conductivity, such as aluminum. The cover member 220 may also be made of an insulating resin with high thermal conductivity. This allows the cover member 220 to be lightweight while improving its insulating properties.

[0025] (1.2.3) Power socket Fig. 4 is a perspective view of the power feed socket 300 in the lighting device 1 according to the embodiment. The power feed socket 300 is a power feed socket for feeding power to the light source unit 10 having the power feed terminal 120. As shown in Fig. 4, the power feed socket 300 includes a socket body 310 and a plurality of (two in the illustrated example) conductive parts 330.

[0026] (1.2.3.1) Socket body As shown in FIG. 4, the socket body 310 is an outer casing of the power feeding socket 300 and is a cylindrical member large enough to accommodate multiple conductive portions 330. The socket body 310 is formed, for example, from an insulating resin material. The socket body 310 includes a main portion 311 that forms the top surface of the power feeding socket 300. The main portion 311 has an annular shape when viewed from above and below. The socket body 310 has multiple (two in the illustrated example) first insertion portions 320, multiple (two in the illustrated example) guide portions 340, and a second insertion portion 350.

[0027] Each of the multiple first insertion portions 320 has a first insertion hole 321. The first insertion hole 321 penetrates the main portion 311 of the socket body 310 in the up-down direction. The first insertion hole 321 has a circular shape in a plan view from the up-down direction. An opening length L1 of the first insertion hole 321 is longer than a diameter D2 (see FIG. 5 ) of the large-diameter portion 122 of the power feeding terminal 120 of the light source unit 10. Therefore, the large-diameter portion 122 of the power feeding terminal 120 can be inserted into the socket body 310 through the first insertion hole 321. In other words, the first insertion hole 321 has a size that allows the power feeding terminal 120 to be inserted therein. In this embodiment, the opening length L1 of the first insertion hole 321 is the diameter of the first insertion hole 321. That is, the power feeding socket 300 includes a first insertion portion 320 having a first insertion hole 321 into which the power feeding terminal 120 is inserted.

[0028] Each of the guide portions 340 has a guide hole 341. Each guide hole 341 penetrates the main portion 311 of the socket body 310 in the up-down direction. The multiple first insertion holes 321 and the multiple guide holes 341 correspond one-to-one to each other. Each guide hole 341 is arc-shaped in a plan view from the up-down direction and is connected to a corresponding one of the multiple first insertion holes 321. In a plan view from the up-down direction, each guide hole 341 extends in an arc-shaped manner clockwise from the corresponding first insertion hole 321, with the center C1 of the socket body 310 as the center of symmetry. That is, in a plan view from a predetermined direction including the first orientation and the second orientation, each guide hole 341 has an arc-shaped shape centered on the protrusion 130. This allows the power supply terminal 120 to be inserted into the guide hole 341 by rotating the light source unit 10.

[0029] Furthermore, the opening length L2 of each guide hole 341 in the intersecting direction is shorter than the opening length L1 of the corresponding first insertion hole 321 in the intersecting direction. Furthermore, the opening length L2 of each guide hole 341 is greater than the diameter D1 (see FIG. 5) of the small diameter portion 121 of the power supply terminal 120 and is smaller than the diameter D2 (see FIG. 5) of the large diameter portion 122. As a result, during the connection work of electrically connecting the power supply terminal 120 to the conductive portion 330, the large diameter portion 122 of the power supply terminal 120 catches on the edge of the guide hole 341, making it less likely that the power supply terminal 120 will come off the power supply socket 300 and cause the light source unit 10 to fall. The intersecting direction is a direction that intersects with the movement direction in which the power supply terminal 120 moves during the connection work.

[0030] Each guide hole 341 has the function of guiding the power supply terminal 120, which is inserted through the first insertion hole 321 of the first insertion portion 320, from the first insertion portion 320 to the conductive portion 330. That is, each guide portion 340 guides the power supply terminal 120 during the connection process of electrically connecting the power supply terminal 120 to the conductive portion 330. In other words, the power supply socket 300 includes a guide portion 340 that guides the power supply terminal 120 during the connection process. Each guide hole 341 has a connection portion 345 (see FIG. 5 ) near the end opposite the first insertion hole 321, where the power supply terminal 120 is electrically connected to the conductive portion 330. The connection portion 345 is, for example, the terminal end of the guide hole 341.

[0031] 4, the second insertion portion 350 has a second insertion hole 351, a pair of grooves 352, and a pair of restricting portions 353. The protrusion 130 of the light source unit 10 is inserted into the second insertion portion 350 during the connection work of electrically connecting the power supply terminal 120 to the conductive portion 330.

[0032] The second insertion hole 351 penetrates the socket body 310 in the up-down direction near the center of the socket body 310. The second insertion hole 351 has a circular shape when viewed from above. That is, the socket body 310 has an annular (donut-like) shape when viewed from above. As described above, the protrusion 130 of the light source unit 10 is inserted into the second insertion hole 351 of the second insertion part 350. Since the protrusion 130 is inserted into the second insertion hole 351, the inner diameter of the second insertion hole 351 is larger than the outer diameter of the protrusion 130. Furthermore, it is desirable that the height of the second insertion part 350 be larger than the height of the protrusion 130.

[0033] As shown in FIG. 4 , the pair of grooves 352 face each other in the radial direction of the second insertion hole 351. That is, the line segment connecting the pair of grooves 352 is approximately the diameter of the second insertion hole 351. Each groove 352 extends in the vertical direction and intersects with a restricting portion 353 (described later). In a plan view from the insertion direction (vertical direction) of the power feeding terminal 120, the line segment connecting the pair of grooves 352 intersects, for example, is approximately perpendicular to, the line segment connecting the first insertion holes 321 of the two first insertion portions 320. This allows the support points of the light source units 10 in the power feeding socket 300 to be evenly distributed, allowing the power feeding socket 300 to evenly hold the light source units 10. Therefore, for example, even if the lighting device 1 is a spotlight and the light source unit 10 is tilted so that the light irradiation direction of the light source unit 10 is horizontal, the light source unit 10 can be prevented from sagging in the vertical direction.

[0034] As shown in FIG. 4 , the pair of restricting portions 353 face each other in the radial direction of the second insertion hole 351. That is, the line segment connecting the pair of restricting portions 353 is approximately the diameter of the second insertion hole 351. Each of the pair of restricting portions 353 has a function of restricting removal (movement of the protrusion 130) in the removal direction (downward) opposite to the insertion direction (upward) of the light source unit 10 by contacting the corresponding protrusion 131 of each restricting portion 353 in the up-down direction. This prevents the light source unit 10 from falling off from the power feeding socket 300 by contacting the corresponding protrusion 131 of each restricting portion 353. That is, the power feeding socket 300 holds the light source unit 10 by contacting the protrusion 131 of the protrusion 130 with the restricting portion 353. When the light source unit 10 is attached to the power feeding socket 300, the height of the second insertion portion 350 in the up-down direction is approximately the same as the height of the protrusion 130. Each of the restricting portions 353 extends horizontally from the tip of the corresponding one of the pair of grooves 352 .

[0035] In a plan view from above, each restricting portion 353 extends clockwise from the corresponding groove portion 352 in an arc shape centered on the protrusion 130. That is, in a plan view from a predetermined direction (vertical direction) including the first and second directions, each restricting portion 353 has an arc shape centered on the protrusion 130. This allows the protrusion 131 to come into contact with the restricting portion 353 by rotating the light source unit 10. Furthermore, in a plan view from above, each restricting portion 353 is disposed on the inner periphery of the guide portion 340. That is, in a plan view from the predetermined direction (vertical direction) including the first and second directions, each restricting portion 353 is located inside the corresponding guide portion 340. This allows the restricting portion 353 to be provided closer to the center of the socket body 310, which contributes to making the power feeding socket 300 more compact.

[0036] Each restricting portion 353 restricts the power supply terminal 120 from coming off in the second direction (removal direction) even when the power supply terminal 120 is guided by the guide hole 341. As a result, even if the power supply terminal 120 is not held properly, the protrusion 131 of the protrusion 130 comes into contact with the restricting portion 353 in a predetermined direction (up and down direction), thereby preventing the light source unit 10 from coming off from the power supply socket 300.

[0037] As shown in Fig. 4, the two first insertion portions 320 are provided in the main portion 311 of the socket body 310 at positions that are point-symmetrical with respect to the center C1 of the socket body 310. Also, as shown in Fig. 4, the two guide portions 340 are provided in the main portion 311 of the socket body 310 at positions that are point-symmetrical with respect to the center C1 of the socket body 310. This allows the support points of the light source units 10 in the power feeding socket 300 to be evenly distributed, enabling the power feeding socket 300 to hold the light source units 10 evenly.

[0038] (1.2.3.2) Conductive parts FIG. 5 is a cross-sectional view of the power feed socket 300 in the lighting device 1 according to the embodiment. As shown in FIGS. 4 and 5 , each of the plurality of conductive portions 330 is an elastic plate-like member. Each conductive portion 330 is arranged along a corresponding one of the plurality of guide holes 341 so as to cover the corresponding guide hole 341. Specifically, each conductive portion 330 overlaps a part of the corresponding guide hole 341 in a plan view from the top and bottom direction. Each conductive portion 330 is electrically connected by contacting a corresponding one of the plurality of power feed terminals 120. That is, each conductive portion 330 is electrically connected to a corresponding one of the plurality of power feed terminals 120.

[0039] 5, each conductive portion 330 has a bent portion 331 that protrudes downward (toward the power supply terminal 120) in a V-shape, and each bent portion 331 comes into contact with the large diameter portion 122 of the corresponding power supply terminal 120 from above and below, thereby supplying power from each conductive portion 330 to the corresponding power supply terminal 120. When the large diameter portion 122 of the corresponding power supply terminal 120 reaches the connection portion 345 of the corresponding guide hole 341, each conductive portion 330 becomes electrically connectable with the large diameter portion 122 of the corresponding power supply terminal 120.

[0040] (1.3) Overall structure Next, the overall configuration of the lighting device 1 configured as above will be described in detail.

[0041] 1 and 2, the light source unit 10 is inserted into the power feed socket 300 from below and electrically connected to the power feed socket 300. At this time, the protrusion 130 of the light source unit 10 is inserted into the second insertion portion 350 of the power feed socket 300. At this time, each power feed terminal 120 of the light source unit 10 is inserted into the corresponding first insertion portion 320 of the power feed socket 300 and moves along the guide portion 340 to a position where it contacts the conductive portion 330. A cover member 220 covers the periphery of the power feed socket 300 and the light source unit 10. An attachment member 210 covers the side and bottom surfaces of the cover member 220. In this embodiment, the diameter of the main body 110 of the light source unit 10 is approximately the same as the diameter of the socket main body 310 of the power feed socket 300.

[0042] (1.4) How to install the light source unit Next, a detailed description will be given of a method for attaching the light source unit 10 to the power feed socket 300 configured as described above. The attachment method according to this embodiment includes an insertion step, a rotation step, and a connection step. The insertion step is a step of inserting the power feed terminal 120 of the light source unit 10 into the first insertion portion 320 of the power feed socket 300. The rotation step is a step of rotating the light source unit 10 relative to the power feed socket 300. The connection step is a step of connecting the power feed terminal 120 of the light source unit 10 to the conductive portion 330 of the power feed socket 300.

[0043] (1.4.1) Insertion process First, the protrusion 130 of the light source unit 10 is inserted into the second insertion hole 351 of the second insertion portion 350 of the power feeding socket 300. When the protrusion 130 is inserted into the second insertion hole 351, each protrusion 131 of the protrusion 130 is inserted into the corresponding groove 352 of the second insertion portion 350. When the protrusion 130 is completely inserted into the second insertion portion 350, each protrusion 131 of the protrusion 130 reaches the intersection of the corresponding groove 352 and the restricting portion 353 connected to the corresponding groove 352. At this time, in conjunction with the insertion of the protrusion 130 into the second insertion portion 350, the corresponding power feeding terminal 120 of the light source unit 10 is inserted into each first insertion hole 321 of the power feeding socket 300.

[0044] (1.4.2) Rotation process Next, the light source unit 10 is rotated clockwise in a plan view from below. As a result, each protrusion 131 moves from the groove 352 to the restriction portion 353 in the corresponding second insertion portion 350. Also, the large diameter portion 122 of each power supply terminal 120 moves from the first insertion hole 321 in the corresponding first insertion portion 320 to the guide hole 341 in the corresponding guide portion 340.

[0045] (1.4.3) Connection process By the above-described rotation process, the large diameter portion 122 of each power supply terminal 120 reaches the connection portion 345 of the corresponding guide hole 341. The large diameter portion 122 of each power supply terminal 120 comes into line contact with the bent portion 331 of the corresponding conductive portion 330 at the connection portion 345, and is thereby sandwiched (held) between the conductive portion 330 and the connection portion 345.

[0046] FIG. 6 is a perspective view of the lighting device 1 according to the embodiment, illustrating a state in which the light source unit is attached to the power supply socket. As illustrated in FIG. 6, when the light source unit 10 is attached to the power supply socket 300 through the above-described steps, the protrusions 131 of the light source unit 10 contact the corresponding restricting portions 353 in the first direction (vertical direction). That is, when the light source unit 10 is attached to the power supply socket 300, the restricting portions 353 face the protrusions 131 in the first direction. This restricts removal of the light source unit 10 in a second direction (removal direction) that is opposite to the first direction (insertion direction). That is, the restricting portions 353 restrict movement of the protrusions 130 in the second direction when the power supply terminals 120 are guided by the guide holes 341. Furthermore, for example, even when the lighting device 1 is a spotlight and the light source unit 10 is tilted so that the light irradiation direction of the light source unit 10 is horizontal, the light source unit 10 can be prevented from sagging in the vertical direction.

[0047] Furthermore, in a state where the light source unit 10 is attached to the power feed socket 300 through the above-described processes, the gap between the large diameter portion 122 constituting the top surface of the power feed terminal 120 and the guide portion 340 in the insertion direction (vertical direction) is larger than the gap between the protrusion 131 and the restricting portion 353 in the insertion direction (vertical direction). In other words, in a state where the light source unit 10 is attached to the power feed socket 300, the gap between the large diameter portion 122 and the guide portion 340 in a predetermined direction (first direction) including the first orientation and the second orientation is larger than the gap between the protrusion 131 and the restricting portion 353 in the predetermined direction. As a result, the power feed socket 300 holds the protrusion 131 of the light source unit 10 more predominantly than the power feed terminal 120 of the light source unit 10. In other words, the holding force of the restricting portion 353 against the protrusion 131 is larger than the holding force of the guide portion 340 against the power feed terminal 120.

[0048] (1.5) Functions of the Regulatory Department Next, the function of the restricting portion 353 of the power supply socket 300 configured as above will be described in detail.

[0049] 6, when the light source unit 10 is attached to the power supply socket 300, the restricting portion 353 comes into contact with the protruding portion 131 in the above-mentioned predetermined direction (insertion direction). The restricting portion 353 is held between the protruding portion 131 and the base surface 111 of the main body 110. This makes it possible to restrict the protruding portion 130 from coming off in the second direction (removal direction), and as a result, it is possible to prevent the light source unit 10 from falling off from the power supply socket 300.

[0050] Furthermore, when the light source unit 10 is attached to the power supply socket 300, the restricting portion 353 and the protrusion 131 are in contact with each other, and there is no (very small) gap between the restricting portion 353 and the protrusion 131 in the insertion direction (first direction). This prevents the light source unit 10 from drooping in the vertical direction, for example, even if the lighting device 1 is a spotlight and the light source unit 10 is tilted so that the light irradiation direction of the light source unit 10 is horizontal.

[0051] (1.6) Action and Effect Next, the effects of the power supply socket 300 configured as above will be described.

[0052] The power feed socket 300 according to the embodiment includes a first insertion portion 320 having a first insertion hole 321 into which the power feed terminal 120 of the light source unit 10 is inserted, a conductive portion 330 electrically connected to the power feed terminal 120, a guide portion 340 connected to the first insertion hole 321 and having a guide hole 341 that guides the power feed terminal 120 from the first insertion portion 320 to the conductive portion 330, and a second insertion portion 350 into which the protrusion 130 is inserted during the connection work of electrically connecting the power feed terminal 120 to the conductive portion 330. The second insertion portion 350 has a restricting portion 353 that restricts movement of the protrusion 130 in a second direction. The power feed socket 300 holds the light source unit 10 when the protrusion 130 comes into contact with the restricting portion 353.

[0053] According to the above configuration, the light source unit 10 is maintained attached to the power feeding socket 300 by the contact between the protrusion 131 and the restricting portion 353 in the first direction (insertion direction). This improves the electrical connection between the power feeding terminal 120 and the conductive portion 330. Furthermore, the contact between the protrusion 131 and the restricting portion 353 in the first direction prevents the light source unit 10 from coming off in the second direction (removal direction) opposite to the first direction (insertion direction).

[0054] Furthermore, in the power feed socket 300, the protrusion 130 has a protruding portion 131 that protrudes in a second direction that is a direction intersecting the first direction, which includes the first direction and the second direction. The restricting portion 353 faces the protruding portion 131 in the first direction when the light source unit 10 is attached to the power feed socket 300.

[0055] According to the above configuration, the protrusion 131 comes into contact with the restricting portion 353, so that the protrusion 131 can be supported, and the light source unit 10 can be prevented from falling off from the power supply socket 300.

[0056] In the power feed socket 300, the power feed terminal 120 has a large diameter portion 122 that is an insertion portion that is inserted through the first insertion hole 321. When the light source unit 10 is attached to the power feed socket 300, the gap between the large diameter portion 122 and the guide portion 340 in the predetermined direction is larger than the gap between the protrusion 131 and the restricting portion 353 in the predetermined direction.

[0057] According to the above configuration, the power feeding socket 300 holds the protrusion 131 of the light source unit 10 more predominantly than the power feeding terminal 120 of the light source unit 10. In other words, the holding force of the restricting portion 353 on the protrusion 131 is greater than the holding force of the guide portion 340 on the power feeding terminal 120. This increases the attachment strength of the light source unit 10 to the power feeding socket 300.

[0058] Moreover, each of the guide hole 341 and the restricting portion 353 has an arc shape with the protruding portion 130 as the center when viewed in a plan view from the predetermined direction.

[0059] According to the above configuration, by rotating the light source unit 10, the power supply terminal 120 can be inserted into the guide hole 341. Similarly, by rotating the light source unit 10, the protrusion 131 can be brought into contact with the restriction portion 353.

[0060] Moreover, the restricting portion 353 is located inside the guide portion 340 in a plan view from the above-mentioned predetermined direction.

[0061] According to the above configuration, the restricting portion 353 can be provided closer to the center of the socket body 310, which leads to a more compact power feeding socket 300.

[0062] Furthermore, in the power feeding socket 300, the restricting portion 353 restricts the movement of the protruding portion 130 in the second direction when the power feeding terminal 120 is guided by the guide hole 341.

[0063] According to the above configuration, even if the power supply terminal 120 is held in an incomplete state, the protrusion 131 of the protrusion 130 comes into contact with the regulating portion 353 in a predetermined direction, thereby preventing the light source unit 10 from falling off from the power supply socket 300.

[0064] (1.7) Variations The configuration of the present disclosure has been described above based on the embodiments, but the present disclosure is not limited to the above embodiments. Furthermore, the materials, values, etc. described in the above embodiments are preferred examples and are not intended to be limiting. Furthermore, the configuration of the power supply socket 300 can be modified as appropriate without departing from the scope of the technical concept of the present disclosure.

[0065] (1.7.1) Variation 1 A first modified example of the power feeding socket 300 according to the embodiment of the present disclosure will be described below with reference to FIGS. 7 to 9. FIG. 7 is a perspective view of the power feeding socket 300 in the lighting device 1 according to the first modified example. FIG. 8 is a cross-sectional view of the power feeding socket 300 in the lighting device 1 of the same. FIG. 9 is a perspective view of the lighting device 1 of the same with the light source unit 10 attached to the power feeding socket 300. The basic configuration of the power feeding socket 300 according to the first modified example is the same as that of the above-described embodiment. The difference is the configuration of the conductive section 330. In the first modified example, a description of the same configuration as the above-described embodiment will be omitted, and the description will focus on the differences.

[0066] 7 and 8, the conductive part 330 has a pair of conductive terminals 3301. Each of the pair of conductive terminals 3301 extends along the guide hole 341. The pair of conductive terminals 3301 are aligned in the radial direction of the socket body 310. More specifically, the pair of conductive terminals 3301 are arranged on both sides of the guide hole 341 in the radial direction of the socket body 310. Therefore, the conductive part 330 is electrically and mechanically connected to the power supply terminal 120 by sandwiching the large diameter portion 122 of the power supply terminal 120, which has passed through the guide hole 341 and reached the connection part 345, between the pair of conductive terminals 3301 from both sides in the radial direction of the socket body 310.

[0067] As shown in FIG. 9, in the power supply socket 300 according to the first modification, each of the pair of protrusions 131 on the protrusion 130 of the light source unit 10 contacts the corresponding one of the pair of regulating portions 353 on the second insertion portion 350 from above and below, thereby attaching the light source unit 10 to the power supply socket 300.

[0068] According to the power feeding socket 300 of the first modification, similar to the power feeding socket 300 of the above embodiment, the electrical connection between the power feeding terminal 120 and the conductive portion 330 can be improved.

[0069] (1.7.2) Variation 2 A second modified example of the power feed socket 300 according to the embodiment of the present disclosure will be described below with reference to FIGS. 10 to 12. FIG. 10 is a perspective view of the power feed socket 300 in the lighting device 1 according to the second modified example. FIG. 11 is a cross-sectional view of the power feed socket 300 in the lighting device 1 of the same. FIG. 12 is a perspective view of the lighting device 1 of the same with the light source unit 10 attached to the power feed socket 300. The basic configuration of the power feed socket 300 according to the second modified example is the same as that of the above-described embodiment. The difference is that it includes a terminal fixing portion 360. In the second modified example, a description of the same configuration as the above-described embodiment will be omitted, and the description will focus on the differences.

[0070] As shown in FIGS. 10 and 11 , the power feed socket 300 according to the second modification further includes a pair of terminal fixing portions 360. Each of the pair of terminal fixing portions 360 extends along a corresponding one of the pair of guide holes 341 and has a bent portion 361 that is bent so as to protrude toward the power feed terminal 120. In a top-bottom plan view, the bent portion 361 protrudes in a V-shape toward the corresponding guide hole 341. Each terminal fixing portion 360 presses the power feed terminal 120 toward the corresponding one of the pair of conductive portions 330 in the vicinity of the corresponding one of the pair of conductive portions 330. In other words, the terminal fixing portion 360 presses the power feed terminal 120 in the radial direction of the socket body 310. This allows the power feed terminal 120 and the conductive portion 330 to remain electrically connected to each other.

[0071] As shown in FIG. 12, in the power supply socket 300 relating to the second variant example, each of the pair of protrusions 131 on the protrusion 130 of the light source unit 10 contacts the corresponding one of the pair of regulating portions 353 on the second insertion portion 350 from above and below, thereby attaching the light source unit 10 to the power supply socket 300.

[0072] According to the power feeding socket 300 of the second modification, similar to the power feeding socket 300 of the above embodiment, the electrical connection between the power feeding terminal 120 and the conductive portion 330 can be improved.

[0073] (1.7.3) Other variations Other variations are listed below.

[0074] In the above-described embodiment, the bent portion 331 of the conductive portion 330 is V-shaped and is in line contact with the large diameter portion 122 of the power supply terminal 120, but the bent portion 331 may be convex and in surface contact with the large diameter portion 122. This reduces poor electrical connection between the conductive portion 330 and the power supply terminal 120 and improves the holding force of the power supply terminal 120.

[0075] The restricting portion 353 may be provided in a location other than the second insertion portion 350.

[0076] (Aspect) The power feed socket (300) according to the first aspect is a power feed socket (300) that feeds power to a light source unit (10) that includes a power feed terminal (120) and a protrusion (130). The power feed socket (300) includes a first insertion portion (320), a conductive portion (330), a guide portion (340), and a second insertion portion (350). The first insertion portion (320) has a first insertion hole (321) into which the power feed terminal (120) is inserted. The conductive portion (330) is electrically connected to the power feed terminal (120). The guide portion (340) is connected to the first insertion hole (321) and has a guide hole (341) that guides the power feed terminal (120) from the insertion portion (320) to the conductive portion (330). The protrusion (130) is inserted into the second insertion portion (350) during the connection work of electrically connecting the power supply terminal (120) to the conductive portion (330). The second insertion portion (350) has a second insertion hole (351) and a restricting portion (353). The protrusion (130) is inserted into the second insertion hole (351). The restricting portion (353) restricts movement of the protrusion (130) in a second direction opposite to a first direction in which the power supply terminal (120) is inserted into the first insertion hole (321). The power supply socket (300) holds the light source unit (10) by the protrusion (130) coming into contact with the restricting portion (353).

[0077] According to the power feed socket (300) of the above aspect, the light source unit (10) is held in the power feed socket (300) by the protrusion (130) coming into contact with the restricting portion (353). In this state, the power feed terminal (120) and the conductive portion (330) are electrically connected, thereby improving the electrical connection between the power feed terminal (120) and the conductive portion (330).

[0078] In the power socket (300) according to the second aspect, the protrusion (130) of the first aspect has a protruding portion (131). The protruding portion (131) protrudes in a second direction that is a direction intersecting the first direction, which includes the first and second directions. The restricting portion (353) faces the protruding portion (131) in the first direction.

[0079] According to the power supply socket (300) of the above aspect, the protrusion (131) comes into contact with the restricting portion (353), thereby supporting the protrusion (130), and preventing the light source unit (10) from falling off the power supply socket (300).

[0080] In the power feed socket (300) according to the third aspect, the power feed terminal (120) of the second aspect has a large diameter portion (122). The large diameter portion (122) is an insertion portion that is inserted through the first insertion hole (321). When the light source unit (10) is attached to the power feed socket (300), the gap between the large diameter portion (122) and the guide portion (340) in a predetermined direction including the first and second directions is larger than the gap between the protrusion portion (131) and the restricting portion (353) in the predetermined direction.

[0081] According to the power feed socket (300) of the above aspect, the power feed socket (300) holds the protrusion (131) of the light source unit (10) more strongly than the power feed terminal (120) of the light source unit (10). In other words, the holding force of the restricting portion (353) on the protrusion (131) is greater than the holding force of the guide portion (340) on the power feed terminal (120). This increases the attachment strength of the light source unit (10) to the power feed socket (300).

[0082] In the power supply socket (300) according to the fourth aspect, in any one of the first to third aspects, each of the guide hole (341) and the restricting portion (353) has an arc shape centered on the protrusion (130) when viewed in a plan view from a predetermined direction including the first direction and the second direction.

[0083] According to the power feed socket (300) of the above aspect, by rotating the light source unit (10), the power feed terminal (120) can be inserted into the guide hole (341). Similarly, by rotating the light source unit (10), the protrusion (131) can be brought into contact with the restriction portion (353).

[0084] In the power socket (300) according to the fifth aspect, in the first to fourth aspects, the restricting portion (353) is located inside the guide portion (340) in plan view from a predetermined direction including the first and second directions.

[0085] According to the power feed socket (300) of the above aspect, the restricting portion (353) can be provided closer to the center of the socket body (310), which leads to a more compact power feed socket (300).

[0086] In the power feeding socket (300) according to the sixth aspect, in any one of the first to fifth aspects, the restricting portion (353) restricts movement of the protrusion (130) in the second direction while the power feeding terminal (120) is guided by the guide hole (341).

[0087] According to the power supply socket (300) of the above aspect, even if the power supply terminal (120) is held in an incomplete state, the protrusion (131) of the protrusion (130) comes into contact with the restricting portion (353) in the first direction (a direction including the first orientation and the second orientation), thereby preventing the light source unit (10) from falling off the power supply socket (300).

[0088] The lighting device (1) according to a seventh aspect includes the power feed socket (300) according to any one of the first to sixth aspects, and a light source unit (10) detachably attached to the power feed socket (300).

[0089] According to the lighting device (1) of the above aspect, the power supply socket (300) is provided, which improves the electrical connection between the power supply terminal (120) and the conductive portion (330). [Explanation of symbols]

[0090] 1. Lighting equipment 10 Light source unit 120 Power supply terminal 122 Large diameter section 130 Protrusion 131 Protrusion 300 power socket 320 First Insertion Part 321 First insertion hole 330 Conductive part 340 Guide part 341 Guide hole 350 Second Insertion Part 351 Second insertion hole 353 Regulatory Department

Claims

1. A power supply socket for supplying power to a light source unit, the power supply socket including a power supply terminal and a protrusion, a first insertion portion having a first insertion hole into which the power supply terminal is inserted; a conductive portion electrically connected to the power supply terminal; a guide portion having a guide hole connected to the first insertion hole and guiding the power supply terminal from the first insertion portion to the conductive portion; a second insertion portion into which the protrusion is inserted during a connection operation for electrically connecting the power supply terminal to the conductive portion, The second insertion portion is a second insertion hole into which the protrusion is inserted; a restricting portion that restricts movement of the protrusion in a second direction opposite to a first direction in which the power supply terminal is inserted into the first insertion hole, The protrusion contacts the restriction portion to hold the light source unit. Power supply socket.

2. the protrusion has a protruding portion that protrudes in a second direction that is a direction intersecting a first direction including the first direction and the second direction, the restricting portion faces the protruding portion in the first direction when the light source unit is attached to the power supply socket. The power supply socket according to claim 1.

3. the power supply terminal has a large diameter portion that is an insertion portion that is inserted through the first insertion hole, a gap between the large diameter portion and the guide portion in a predetermined direction including the first direction and the second direction when the light source unit is attached to the power supply socket is larger than a gap between the protrusion portion and the restricting portion in the predetermined direction; The power supply socket according to claim 2.

4. each of the guide hole and the restriction portion has an arc shape centered on the protrusion portion when viewed in a plan view from a predetermined direction including the first direction and the second direction; The power supply socket according to any one of claims 1 to 3.

5. the restricting portion is located inside the guide portion in a plan view from a predetermined direction including the first direction and the second direction. The power supply socket according to any one of claims 1 to 3.

6. the restricting portion restricts the movement of the protruding portion in the second direction while the power supply terminal is guided by the guide hole. The power supply socket according to any one of claims 1 to 3.

7. The power supply socket according to any one of claims 1 to 3; The light source unit is detachably attached to the power supply socket. Lighting equipment.

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