JP2023097429A - Socket unit and lighting system - Google Patents

Abstract

To provide a socket unit and a lighting system that can be miniaturized.SOLUTION: A socket unit 1 includes a socket body 10 and a terminal connection member 20. The socket body 10 includes one surface 10a and the other surface 10b. The socket body 10 includes a pair of insertion holes 11 and a recess 12. The pair of insertion holes 11 is disposed on one surface 10a. A pair of terminals 340 of a light source unit 300 is inserted into the pair of insertion holes 11, respectively. The recess 12 is disposed between the pair of insertion holes 11. A projecting part 330 of the light source unit 300 is disposed in the recess 12. The recess 12 includes an internal surface 12a and a back surface 12b. The socket body 10 includes a screw insertion hole 101. The screw insertion hole 101 is disposed on the back surface 12b. The screw insertion hole 101 penetrates the socket body 10 from the back surface 12b to the other surface 10b.SELECTED DRAWING: Figure 1

Description

The present invention relates to a socket unit and a lighting device.

Conventionally, a socket unit to which a light source unit is detachably attached is known (see, for example, Patent Document 1). Patent Document 1 describes a socket unit having a pair of insertion holes into which a pair of terminals of a light source unit are respectively inserted, and a recess disposed between the pair of insertion holes and in which a base of the light source unit is disposed. ing.

JP 2016-181432 A

By the way, the socket unit usually has a screw insertion hole for screwing to a wall, stat, or the like. The screw insertion holes are arranged outside the recess.

However, arranging the screw insertion holes outside the recess makes it difficult to miniaturize the socket unit. Therefore, it leads to deterioration of the designability of the lighting device. Moreover, since it becomes difficult to miniaturize the socket unit, it becomes difficult to miniaturize the lighting device. Therefore, it leads to an increase in cost of the socket unit and the lighting device.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a socket unit and a lighting device that can be miniaturized.

The socket unit disclosed in the present application is detachably attached to the light source unit. A socket unit includes a socket body and a terminal connection member. The socket body has one side and the other side. The terminal connection member is arranged inside the socket body. The socket body further has a pair of insertion holes and a recess. The pair of insertion holes are arranged on the one surface. A pair of terminals of the light source unit are respectively inserted into the pair of insertion holes. The recess is arranged between the pair of insertion holes. A projecting portion of the light source unit is disposed in the recess. The terminal connection member is electrically connected to the terminal inserted into the insertion hole. The recess has an inner surface covering the outer periphery of the protrusion and a deep surface extending in a direction intersecting the inner surface. The socket body further has a screw insertion hole. The screw insertion hole is arranged on the inner surface. A first screw is inserted into the screw insertion hole. The screw insertion hole penetrates the socket body from the back surface to the other surface.

In the socket unit disclosed in the present application, the socket body may have a first member on which the one surface is arranged and a second member on which the other surface is arranged. The first member and the second member may be fixed together by a second screw. The first member may have a first screw hole into which the second screw is inserted. The second member may have a second screw hole arranged corresponding to the first screw hole. The first screw hole may be arranged on the inner surface of the recess.

In the socket unit disclosed in the present application, the socket body may have a first member on which the one surface is arranged and a second member on which the other surface is arranged. The first member may have a socket base and a tubular portion. The cylindrical portion may be arranged on the socket base and constitute the recess. The pair of insertion holes and the recess may be arranged side by side in the first direction. A length of the socket base in a second direction intersecting the first direction may be shorter than a length of the cylindrical portion in the second direction.

In the socket unit disclosed in the present application, a pair of the screw insertion holes may be provided side by side in the first direction.

In the socket unit disclosed in the present application, the socket body may have a third screw hole. The third screw hole may be a screw hole for screwing a shade that covers the periphery of the light source unit to the socket body. The third screw hole may be arranged inside the bottom surface when viewed from an insertion direction in which the protrusion is inserted into the recess.

A lighting device disclosed in the present application includes the socket unit described above and a light source unit detachably attached to the socket unit.

ADVANTAGE OF THE INVENTION According to this invention, the socket unit and illuminating device which can be reduced in size can be provided.

FIG. 3 is an exploded perspective view showing the illumination device including the socket unit and the light source unit according to the embodiment of the present invention from the −Z direction; FIG. 3 is an exploded perspective view showing the illumination device including the socket unit and the light source unit according to the embodiment of the present invention from the +Z direction; It is a bottom view which shows the structure of the socket unit of embodiment of this invention. FIG. 4 is a plan view showing the structure of the socket unit according to the embodiment of the invention; FIG. 5 is a cross-sectional view taken along line VV of FIG. 4; FIG. 5 is a cross-sectional view taken along line VI-VI of FIG. 4; FIG. 5 is a cross-sectional view taken along line VII-VII of FIG. 4; It is an enlarged cross-sectional view around a power wire insertion hole. It is a perspective view which shows the structure around the terminal connection member of the socket unit of embodiment of this invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated. Also, in the drawing, the Z-axis is shown as appropriate for easy understanding. As an example, the Z axis is parallel to the vertical direction. The positive direction of the Z-axis indicates the vertically upward direction, and the negative direction of the Z-axis indicates the vertically downward direction.

A lighting device 500 including a socket unit 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. FIG. FIG. 1 is an exploded perspective view showing a lighting device 500 including a socket unit 1 and a light source unit 300 according to an embodiment of the present invention from the -Z direction (here, from below). FIG. 2 is an exploded perspective view showing the illumination device 500 including the socket unit 1 and the light source unit 300 according to the embodiment of the present invention from the +Z direction (here, from above).

The illumination device 500 as shown in FIGS. 1 and 2 is attached to, for example, a ceiling or a wall. The lighting device 500 may be directly attached to the ceiling or wall, may be attached to a lighting attachment portion such as a stud provided on the ceiling or wall, or may be attached to a downlight main body embedded in the ceiling. may be In this embodiment, lighting device 500 is a ceiling light that is directly attached to the ceiling.

The illumination device 500 has a light source unit 300 . The light source unit 300 has a light source (not shown) such as an LED element and emits light. Light source unit 300 has housing 310 and cover 320 .

The housing 310 has, for example, a substantially lidded cylindrical shape. The housing 310 is made of, for example, an insulating resin material such as PBT (polybutylene terephthalate). The housing 310 does not transmit light, for example.

The cover 320 is arranged at the end of the housing 310 in the -Z direction. The cover 320 has, for example, a substantially disk shape. The cover 320 is made of, for example, resin material such as acrylic (PMMA) or polycarbonate (PC). The cover 320 is transparent to light. The cover 320 may have a transparent structure without light diffusing properties, or may have a diffusing structure with light diffusing properties. For example, the inner surface of the cover 320 may be coated with a resin containing a light diffusing material such as silica or calcium carbonate, a white pigment, or the like to form a milky-white light diffusing film, or to form fine unevenness on the cover 320 . Thus, the cover 320 having a light diffusion function can be configured.

In FIG. 1, the center line AX is illustrated for convenience of explanation. A center line AX is a virtual line passing through the centers of the socket unit 1 and the light source unit 300 . The center line AX is substantially orthogonal to one surface 10a and the other surface 10b of the socket unit 1, which will be described later. Hereinafter, the direction perpendicular to the center line AX is referred to as "radial direction RD". The “radial direction RD” may be any direction as long as it is perpendicular to the centerline AX, and is not particularly limited. Also, a direction along an arc centered on the center line AX is referred to as a "circumferential direction CD". The +Z direction and -Z direction are, for example, substantially parallel to the center line AX.

Housing 310 has a top plate 311 and side walls 312 . The top plate 311 is arranged at the end of the side wall 312 in the +Z direction. The top plate 311 has, for example, a substantially disk shape. A cover 320 is arranged on the side wall 312 in the -Z direction.

In addition, the light source unit 300 further has a projecting portion 330 and a pair of terminals 340 .

The protrusion 330 protrudes from the top plate 311 in the +Z direction. The projecting portion 330 has, for example, a substantially lidded cylindrical shape or a substantially cylindrical shape. In this embodiment, the projecting portion 330 has a substantially closed cylindrical shape. The material of the projecting portion 330 is, for example, the same as the material of the housing 310 . In this embodiment, the projecting portion 330 and the housing 310 are integrally formed using a molding die. Note that the projecting portion 330 and the housing 310 may be formed separately.

The projecting portion 330 has a pair of first engaging portions 350 . The pair of first engaging portions 350 face each other in the radial direction RD. The first engaging portion 350 is a recess recessed inward in the radial direction RD from the outer peripheral surface of the projecting portion 330 . The first engaging portion 350 has, for example, a substantially L shape. The first engaging portion 350 is arranged at a position shifted in the circumferential direction CD with respect to the terminal 340 .

A pair of terminals 340 are conductive members for supplying power to the light source unit 300 . The terminal 340 is made of, for example, a conductive metal. A pair of terminals 340 are arranged on the housing 310 . Each of the pair of terminals 340 protrudes from the top plate 311 in the +Z direction. The pair of terminals 340 are opposed to each other with the protruding portion 330 interposed therebetween. Terminal 340 is, for example, a lamp pin.

Each of the pair of terminals 340 has a first columnar portion 341 and a second columnar portion 342 . The first cylindrical portion 341 extends in the +Z direction. The first cylindrical portion 341 has a substantially cylindrical shape. The first cylindrical portion 341 protrudes from the top plate 311 in the +Z direction. The second cylindrical portion 342 protrudes in a direction substantially parallel to the radial direction RD from the +Z direction end of the first cylindrical portion 341 . The second columnar portion 342 has a substantially disk shape or a substantially columnar shape.

The projecting portion 330 and the pair of terminals 340 form a base portion of the light source unit 300 . The base of the light source unit 300 is, for example, the GX53 type specified by Japanese Industrial Standards.

With continued reference to FIGS. 1 and 2, the socket unit 1 of the lighting device 500 will be described. As shown in FIGS. 1 and 2 , lighting device 500 further includes socket unit 1 . A light source unit 300 is detachably attached to the socket unit 1 . Specifically, a pair of terminals 340 of the light source unit 300 are connected to the socket unit 1 .

The socket unit 1 has a socket body 10 and a terminal connection member 20 (see FIG. 3). The socket body 10 is hollow. The socket body 10 is a case that accommodates the terminal connection member 20 inside. That is, the terminal connection member 20 is arranged inside the socket body 10 . In this embodiment, the case (socket body 10) that houses the terminal connection member 20 also serves as a socket to which the light source unit 300 is attached. The socket body 10 is made of, for example, an insulating resin material such as PBT. The terminal connection member 20 is electrically connected to a power line 900 (see FIG. 7) placed behind the ceiling or wall. The power line 900 is, for example, a VVF (vinyl insulated vinyl sheathed flat-type cable) line.

The socket body 10 has one side 10a and the other side 10b. One surface 10a is arranged in the -Z direction of the socket body 10. As shown in FIG. The other surface 10 b is arranged in the +Z direction of the socket body 10 .

FIG. 3 is a bottom view showing the structure of the socket unit 1 of the embodiment of the invention. The socket body 10 has a pair of insertion holes 11 , recesses 12 and a pair of second engaging portions 13 . A pair of insertion holes 11 are arranged on one surface 10a. A pair of terminals 340 of the light source unit 300 are respectively inserted into the pair of insertion holes 11 . Each insertion hole 11 has a circular hole 11a and an elongated hole 11b communicating with the circular hole 11a. The terminal 340 of the light source unit 300 can be inserted through the circular hole 11a. The circular hole 11a is formed to have a size through which the terminal 340 of the light source unit 300 can be inserted. Specifically, the circular hole 11a is formed to have a size through which the second columnar portion 342 of the terminal 340 can be inserted. The long hole 11b extends in the circumferential direction CD from the circular hole 11a. The long hole 11b is formed in a size that the terminal 340 of the light source unit 300 cannot be inserted. Specifically, the elongated hole 11b is formed to have a size such that the second columnar portion 342 of the terminal 340 cannot be inserted therethrough. On the other hand, the long hole 11b is formed to have a size that allows the first columnar portion 341 of the terminal 340 to move in the circumferential direction CD.

Recess 12 is arranged on one side 10a. The recess 12 is arranged between the pair of insertion holes 11 . In this embodiment, the pair of insertion holes 11 and recesses 12 are arranged side by side in the first direction D1. The first direction D1 is a direction intersecting with the Z-axis direction. A protrusion 330 of the light source unit 300 is arranged in the recess 12 . The concave portion 12 positions the light source unit 300 when attaching the light source unit 300 to the socket unit 1 .

The pair of second engaging portions 13 are arranged on the inner peripheral surface of the recess 12 . Each second engaging portion 13 protrudes inward in the radial direction RD. The pair of second engaging portions 13 face each other in the radial direction RD. The second engaging portion 13 is arranged at a position shifted in the circumferential direction CD with respect to the insertion hole 11 .

Next, a method of attaching the light source unit 300 to the socket unit 1 will be described. When attaching the light source unit 300 to the socket unit 1, the light source unit 300 is attached to the socket unit 1 attached to the ceiling or the wall.

First, the protrusion 330 of the light source unit 300 is inserted into the recess 12 of the socket unit 1 . Then, the pair of terminals 340 of the light source unit 300 are inserted into the pair of circular holes 11a of the socket unit 1, respectively. At this time, the second engaging portion 13 of the socket unit 1 is inserted into the first engaging portion 350 of the light source unit 300 . By rotating the light source unit 300 in the circumferential direction CD, the terminals 340 of the light source unit 300 move along the elongated holes 11b of the socket unit 1 . At this time, the terminal 340 contacts the terminal connection member 20 . That is, the terminal connecting member 20 is electrically connected to the terminal 340 inserted into the insertion hole 11 . Then, power can be supplied to the light source unit 300 from the power line 900 (see FIG. 7). Also, at this time, the second engaging portion 13 of the socket unit 1 engages with the first engaging portion 350 of the light source unit 300 in the Z-axis direction. This can prevent the light source unit 300 from falling from the socket unit 1 .

Next, the structure of the socket unit 1 will be further described with reference to FIGS. 1 to 4. FIG. FIG. 4 is a plan view showing the structure of the socket unit 1 according to the embodiment of the invention.

As shown in FIGS. 1 to 4, the socket body 10 has a first member 110 on which one side 10a is arranged and a second member 120 on which the other side 10b is arranged.

As shown in FIGS. 1 and 3, the first member 110 has a bottom surface portion 111 on which the one surface 10a is arranged, and a side wall portion 112 erected from the periphery of the bottom surface portion 111 in the +Z direction. The -Z direction surface of the first member 110 is one surface 10a. The bottom portion 111 is formed in a substantially rectangular shape. The insertion hole 11 is formed in the bottom portion 111 . The side wall portion 112 is formed in a tubular shape having a substantially rectangular cross section.

As shown in FIGS. 2 and 4, the second member 120 has an upper surface portion 121 on which the other surface 10b is arranged, and a side wall portion 122 standing from the periphery of the upper surface portion 121 in the −Z direction. The +Z direction surface of the second member 120 is the other surface 10b. The upper surface portion 121 is formed in a substantially rectangular shape.

5 is a cross-sectional view taken along line VV of FIG. 4. FIG. As shown in FIG. 5, the first member 110 and the second member 120 form an internal space S1 that accommodates the terminal connection member 20 .

Here, in this embodiment, as shown in FIGS. 3 and 5, the socket body 10 further has a screw insertion hole 101 into which the first screw 151 is inserted. A screw insertion hole 101 penetrates the socket body 10 . The first screw 151 is a screw for attaching the socket unit 1 to the ceiling or wall.

Specifically, the recessed portion 12 has an inner side surface 12a that covers the outer periphery of the protruding portion 330, and a deep surface 12b that extends in a direction intersecting the inner side surface 12a (here, in a substantially horizontal direction). The screw insertion hole 101 is arranged on the inner surface 12b. The screw insertion hole 101 penetrates from the inner surface 12b to the other surface 10b. Thus, by providing the socket body 10 with the screw insertion hole 101 penetrating the socket body 10 from the inner surface 12b to the other side 10b, the socket body 10 can be attached to the ceiling or wall using the first screw 151. can. In addition, the socket body 10 can be made smaller than when the screw insertion holes 101 are arranged outside the recess 12 in the radial direction RD. Therefore, the size of the socket unit 1 can be reduced, and the design of the lighting device 500 can be improved. Moreover, since the socket unit 1 can be made smaller, the illumination device 500 can be made smaller. Therefore, it is possible to suppress an increase in cost of the socket unit 1 and the lighting device 500 .

More specifically, in the present embodiment, the screw insertion hole 101 includes a head accommodating portion 101a in which the screw head 151a of the first screw 151 is arranged, and a through hole into which the screw portion 151b of the first screw 151 is inserted. and a hole 101b. The through hole 101b is connected to the head accommodating portion 101a. The head accommodating portion 101 a has an inner diameter larger than the outer diameter of the threaded portion 151 b of the first screw 151 . The through hole 101 b is configured by the through hole 113 of the first member 110 and the through hole 123 of the second member 120 .

6 is a cross-sectional view taken along line VI-VI of FIG. 4. FIG. As shown in FIG. 6, the first member 110 and the second member 120 are secured together by a second screw 152 . Specifically, the first member 110 has a first screw hole 114 into which the second screw 152 is inserted. The second member 120 has a second screw hole 124 into which the second screw 152 is inserted. The first screw hole 114 is arranged on the inner surface 12 b of the recess 12 . Therefore, compared to the case where the first screw hole 114 is arranged outside the recess 12 in the radial direction RD, the size of the socket body 10 can be reduced. Therefore, the size of the socket unit 1 can be reduced, so that the design of the lighting device 500 can be further improved. Moreover, since the socket unit 1 can be made smaller, the illumination device 500 can be made smaller. Therefore, it is possible to suppress an increase in cost of the socket unit 1 and the lighting device 500 .

Specifically, in this embodiment, the first member 110 has a head accommodating portion 115 in which the screw head 152a of the second screw 152 is arranged. The head accommodation portion 115 is connected to the first screw hole 114 . The first screw hole 114 has an inner diameter larger than the outer diameter of the threaded portion 152 b of the second screw 152 . A thread (not shown) is formed on the inner surface of the second screw hole 124 .

Further, as shown in FIGS. 1 to 3, the first member 110 has a socket base 116 and a cylindrical portion 117. As shown in FIGS. The cylindrical portion 117 is arranged on the socket base 116 . The cylindrical portion 117 constitutes the recess 12 . The socket base 116 is formed in a substantially rectangular parallelepiped shape. The length L1 of the socket base 116 in the first direction D1 is longer than the length L2 of the socket base 116 in the second direction D2 intersecting the first direction D1. Also, the length L2 of the socket base 116 in the second direction D2 is shorter than the length L3 of the cylindrical portion 117 in the second direction D2. Therefore, it is possible to suppress the socket base 116 from increasing in both the first direction D1 and the second direction D2. Therefore, it is possible to suppress the socket body 10 from increasing in size.

A pair of screw insertion holes 101 are provided side by side in the first direction D1. In other words, a pair of screw insertion holes 101 are provided side by side in the longitudinal direction of the socket base 116 . Therefore, the distance between the pair of screw insertion holes 101 can be easily ensured. As a result, for example, the terminal connection member 20 or another member such as a release member 26 to be described later can be arranged between the pair of screw insertion holes 101 . Further, for example, since the distance between the first screws 151 can be easily secured, the socket body 10 can be easily and stably fixed to the ceiling or the wall.

FIG. 7 is a cross-sectional view taken along line VII--VII of FIG. As shown in FIGS. 2, 4 and 7, the socket body 10 has a power wire insertion hole 102 into which a power wire 900 placed behind the ceiling or behind the wall is inserted. The power wire insertion hole 102 communicates the outside and the inside of the socket body 10 . The power wire 900 contacts the terminal connection member 20 while being inserted into the power wire insertion hole 102 . Thus, power is supplied from the power line 900 to the lighting device 500 . Thus, in this embodiment, power is directly supplied from the power line 900 to the lighting device 500 without passing through a terminal block (not shown).

The power wire insertion hole 102 is arranged on the other surface 10 b of the socket body 10 . The power wire insertion hole 102 penetrates the upper surface portion 121 of the second member 120 . In this embodiment, the terminal connection member 20 is a quick-connect terminal. Specifically, when the power wire 900 is inserted into the power wire insertion hole 102 by an operator, the terminal connection member 20 holds the power wire insertion hole 102 and is electrically connected to the power wire 900 .

FIG. 8 is an enlarged cross-sectional view of the periphery of the power wire insertion hole 102. As shown in FIG. The power wire insertion hole 102 will be further described with reference to FIG. As shown in FIG. 8, the power wire insertion hole 102 has a large diameter portion 102a, a small diameter portion 102b, and a connection portion 102c. The large diameter portion 102 a is arranged on the other surface 10 b of the socket body 10 . The large diameter portion 102a constitutes an insertion opening into which the power line 900 is inserted. The small diameter portion 102b is arranged downward (-Z direction) with respect to the large diameter portion 102a. The connection portion 102c connects the large diameter portion 102a and the small diameter portion 102b.

The large diameter portion 102 a has an inner diameter larger than the outer diameter of the covering portion 901 of the power line 900 . A coated portion 901 of a power wire 900 is inserted into the large diameter portion 102a.

The small-diameter portion 102 b has an inner diameter larger than the outer diameter of the core wire 902 of the power wire 900 . The core wire 902 of the power wire 900 is inserted into the small diameter portion 102b. On the other hand, small-diameter portion 102 b has an inner diameter smaller than the outer diameter of covering portion 901 of power wire 900 . The covering portion 901 of the power wire 900 is not inserted into the small diameter portion 102b.

The connecting portion 102c extends in a direction crossing the center line (not shown) of the power wire insertion hole 102. As shown in FIG. The connecting portion 102 c may extend, for example, in a direction orthogonal to the center line of the power wire insertion hole 102 or may extend in a direction inclined with respect to the center line of the power wire insertion hole 102 . In this embodiment, the connection portion 102c extends in a direction that is inclined with respect to the center line of the power wire insertion hole 102. As shown in FIG. Specifically, the connecting portion 102c extends radially inward and downward (−Z direction). When the power wire 900 is inserted into the power wire insertion hole 102, the power wire 900 is positioned in the Z direction with respect to the socket body 10 by abutting the lower end of the covering portion 901 on the connecting portion 102c.

Further, the depth H1 from the other surface 10b (upper end of the large diameter portion 102a) to the upper end of the small diameter portion 102b (lower end of the connecting portion 102c) is preferably 6 mm or more. By setting the depth H1 to 6 mm or more, a sufficient distance can be secured between the core wire 902 and a component (not shown) outside the socket body 10 . That is, a sufficient electrical insulation distance can be secured. In this embodiment, the depth H2 from the other surface 10b (upper end of the large diameter portion 102a) of the socket body 10 to the lower end of the large diameter portion 102a (upper end of the connecting portion 102c) is 6 mm or more.

FIG. 9 is a perspective view showing the structure around the terminal connection member 20 of the socket unit 1 according to the embodiment of the present invention. In addition, in FIG. 9, the first member 110, the second member 120, and the like are omitted for easy understanding. As shown in FIG. 9, the terminal connection member 20 is formed by bending a sheet metal. The terminal connecting member 20 has a terminal connecting portion 21 , a power line connecting portion 22 and a connecting portion 23 .

As shown in FIG. 5 , the terminal connection portion 21 is arranged above and near the insertion hole 11 . The terminal connection portion 21 is electrically connected to the terminal 340 (see FIG. 2) of the light source unit 300 by contacting the terminal 340 . As shown in FIG. 7 , the power wire connecting portion 22 is arranged below the power wire insertion hole 102 . The power line connecting portion 22 is electrically connected to the power line 900 by contacting the power line 900 . As shown in FIG. 9 , the connecting portion 23 connects the terminal connecting portion 21 and the power line connecting portion 22 . The connecting portion 23 is bent so as to avoid each portion of the first member 110 and the second member 120 . Therefore, in the socket unit 1 of this embodiment, a harness for connecting the terminal connection portion 21 and the power line connection portion 22 is not provided.

The socket unit 1 also includes a pair of biasing members 25 . A pair of urging members 25 are arranged to face the power line connection portions 22 of the pair of terminal connection members 20, respectively. The biasing member 25 is arranged with a gap with respect to the power line connecting portion 22 . The biasing member 25 is arranged below the power wire insertion hole 102 . When the power line 900 is inserted into the power line insertion hole 102 , the biasing member 25 biases the power line 900 toward the power line connection portion 22 . The power line 900 is held by the biasing member 25 and the power line connecting portion 22 .

The socket unit 1 also includes a releasing member 26 . The release member 26 is configured to be movable in the first direction D1. The releasing member 26 has a pressing portion 26a capable of pressing the pair of urging members 25 and an operating portion 26b. The operator applies a tool with a thin tip, such as a flat-blade screwdriver, to the operation portion 26b from the other side 10b side, and pushes and moves the release member 26 toward the one side D11 (biasing member 25 side) in the first direction D1. , the pressing portion 26a of the release member 26 presses the biasing member 25 toward the one side D11 in the first direction D1. As a result, the biasing member 25 is compressed and deformed, and the gap between the biasing member 25 and the power line connection portion 22 is increased. Therefore, the power line 900 is released from the holding by the biasing member 25 and the power line connecting portion 22 , and the power line 900 can be removed from the socket unit 1 .

Further, in this embodiment, the socket body 10 has a third screw hole 118 as shown in FIGS. 2, 4 and 6 . The third screw hole 118 is a screw hole for screwing the shade 400 included in the lighting device 500 to the socket body 10 . The shade 400 covers the light source unit 300 . A third screw 153 is inserted into the third screw hole 118 . Note that the shade 400 is not essential in the illumination device 500 .

In this embodiment, the third screw hole 118 is arranged on the other surface 10b. Also, the third screw hole 118 is formed in the upper surface portion 121 of the second member 120 . The third screw hole 118 may not pass through the upper surface portion 121 as shown in FIG. 6, or may pass through the upper surface portion 121 .

As shown in FIGS. 3 and 4, the third screw hole 118 is arranged inside the inner surface 12b when viewed from the insertion direction (Z-axis direction) in which the projection 330 is inserted into the recess 12 . In other words, the third screw hole 118 is arranged inside the inner side surface 12a in the radial direction RD when viewed from the Z-axis direction. Therefore, the size of the socket body 10 can be reduced compared to the case where the third screw hole 118 is arranged outside the inner surface 12a in the radial direction RD.

The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist of the present invention. In order to facilitate understanding, the drawings schematically show each component mainly, and the thickness, length, number, etc. of each component illustrated are different from the actual ones due to the convenience of drawing. Sometimes. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiment are examples and are not particularly limited, and various changes are possible within a range that does not substantially deviate from the effects of the present invention. be.

For example, in the above-described embodiment, an example in which a pair of screw insertion holes 101 are provided side by side in the first direction D1 has been described, but the present invention is not limited to this. The screw insertion holes 101 may be provided side by side in a direction intersecting the first direction D1. Also, one or more than three screw insertion holes 101 may be provided.

Also, in the above-described embodiment, an example in which the first member 110 and the second member 120 are fixed to each other using screws has been described, but the present invention is not limited to this. For example, the first member 110 and the second member 120 may be fixed together using members other than screws. Also, the first member 110 and the second member 120 may be fixed to each other using an elastically deformable engaging claw having a so-called snap-fit structure.

INDUSTRIAL APPLICABILITY The present invention is useful in the field of socket units and lighting devices.

1: socket unit 10: socket body 10a: one side 10b: other side 11: insertion hole 12: recess 12a: inner side 12b: inner side 20: terminal connection member 101: screw insertion hole 110: first member 114: first Screw hole 116 : Socket base 117 : Cylindrical part 118 : Third screw hole 120 : Second member 124 : Second screw hole 151 : First screw 152 : Second screw 300 : Light source unit 330 : Protruding part 340 : Terminal 400 : Shade 500: lighting device D1: first direction D2: second directions L2, L3: length

Claims (6)

A socket unit to which a light source unit is detachably attached,
a socket body having one side and the other side;
a terminal connection member arranged inside the socket body,
The socket body is
a pair of insertion holes arranged on the one surface and into which a pair of terminals of the light source unit are respectively inserted;
a recess disposed between the pair of insertion holes and in which the projecting portion of the light source unit is disposed;
The terminal connection member is electrically connected to the terminal inserted into the insertion hole,
The recess has an inner surface covering the outer periphery of the protrusion and a deep surface extending in a direction intersecting the inner surface,
The socket body further has a screw insertion hole arranged on the inner surface and into which a first screw is inserted,
The socket unit, wherein the screw insertion hole penetrates the socket body from the inner surface to the other surface. The socket body has a first member on which the one surface is arranged and a second member on which the other surface is arranged,
the first member and the second member are fixed to each other by a second screw;
The first member has a first screw hole into which the second screw is inserted,
The second member has a second screw hole arranged corresponding to the first screw hole,
2. The socket unit according to claim 1, wherein said first screw hole is arranged on said inner surface of said recess. The socket body has a first member on which the one surface is arranged and a second member on which the other surface is arranged,
The first member has a socket base and a cylindrical portion arranged on the socket base and forming the recess,
the pair of insertion holes and the recess are arranged side by side in a first direction,
2. The socket unit according to claim 1, wherein the length of said socket base in a second direction intersecting said first direction is shorter than the length of said cylindrical portion in said second direction. 4. The socket unit according to claim 3, wherein a pair of said screw insertion holes are provided side by side in said first direction. The socket body has a third screw hole,
The third screw hole is a screw hole for screwing a shade covering the periphery of the light source unit to the socket body,
2. The socket unit according to claim 1, wherein said third screw hole is arranged inside said inner surface when viewed from an insertion direction in which said protrusion is inserted into said recess. a socket unit according to any one of claims 1 to 5;
and a light source unit detachably attached to the socket unit.

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