JP3057995B2 - Lamp socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket for supporting a straight tube fluorescent lamp.

[0002]

2. Description of the Related Art A straight tube fluorescent lamp is supported by inserting a lamp pin into a pair of lamp sockets arranged at both ends in the axial direction. The configuration of a conventional lamp socket used for such a lamp support is shown in FIGS.

That is, in these figures, reference numeral 1 denotes a socket body, a circular hole 2 is provided at one longitudinal end of a front wall 1a, and a plurality of lead wire connecting holes 3 are provided at the other end. Is provided. An operation plate 4 for closing the circular hole 2 and a pair of terminal fittings 5 for pressing the operation plate 4 against the edge of the circular hole 2 are housed in the socket body 1. The terminal fitting 5 has a spring property and has one end 5.
a closes the lamp pin through hole 4a of the operation plate 4 from the back side of the operation plate 4, and the other end thereof is connected to a not-shown device wiring lead inserted into the socket body 1 through the lead wire insertion hole 3. Self-locking terminal portion 5b.

As shown in FIGS. 10 and 11, the operating plate 4 has a flange 4b which is engaged with a hole edge of the circular hole 2, and the flange 4b has a pair of first groove portions 6 and a pair of first groove portions. Two grooves 7 are formed respectively. The pair of first groove portions 6
180 ° apart from each other.
Another pair of second convex portions 7 is formed at a position which is orthogonal to a straight line connecting and 180 ° apart from each other. Therefore, the operation plate 6 has a configuration in which there is no directionality in the vertical direction (in FIGS. 10 and 11).

[0005] One end of the socket body 1 is engaged with one first guide boss 8 into which one of the pair of first grooves 6 is engaged, and with each second groove 7. And a pair of second guide bosses 9 extending in the thickness direction of the socket body 1. When the lamp pins are inserted into the lamp pin through holes 4a and connected to the socket of the straight tube fluorescent lamp, the operation plate 4 guides each of the guide bosses 8 and 9 to guide the inside of the socket body 1 in the thickness direction. It is movable.

[0006]

As described above, in the conventional lamp socket, the operation plate 4 is provided in the socket main body 1 without the vertical direction in FIGS. 10 and 11. Each of the grooves 6 and 7 is provided at every 90 °, and a pair of second guide bosses 9 in which a pair of the second grooves 7 are engaged are formed on both sides of the maximum diameter portion of the circular hole 2, in other words. The operation plate 4 is provided on both sides in the width direction of the socket body 1 so as to correspond to the position where the pair of lamp pin through holes 4a are arranged.

For this reason, the operating plate 4 has a substantially rhombic shape and is large, and the socket body 1 for accommodating the operating plate 4 needs to be formed large accordingly, and the conventional lamp socket has a large shape. There is a problem that the material cost is high and the cost is high.

In the conventional configuration, the operating plate 4 is guided only by the three guide bosses 8 and 9 provided so as to be close to one end of the socket main body 1, so that the straight tube type fluorescent lamp is supported. And the following problems are likely to occur.

That is, the elastic force of the unused terminal fitting 5 which has never been elastically deformed is considerably large, and therefore, a considerable operation force is required to insert the lamp pin into the lamp socket.

The straight tube fluorescent lamp is mounted between the two lamp sockets by inserting a lamp pin into one of the pair of lamp sockets and then inserting a lamp pin into the other lamp socket. In this mounting operation, the terminal fitting of the one lamp socket is largely elastically deformed by the insertion of the pin, and its elastic force is greatly reduced. Therefore, after the lamp is mounted, the other lamp socket has a small degree of elastic deformation. Due to the elastic force of the terminal fitting, the straight tube-type fluorescent lamp is pushed toward the one socket side and is easily offset and mounted.

Therefore, although it is an unfavorable handling,
In order to avoid these situations, an operator who installs the straight tube fluorescent lamp strongly presses the operating plate with a finger before mounting the lamp to greatly reduce the elastic force of the terminal fitting 5 in advance, and then mount the lamp. May be done.

When the operating plate 4 is strongly pushed by the finger and the peripheral portion thereof is pressed instead of the center of the operating plate 4, the operating plate 4 is inclined and pushed.
The inclination cannot be sufficiently suppressed only by the three guide bosses 8 and 9 for guiding the movement of the boss.

For this reason, the peripheral edge opposite to the point of action of the pushing force with respect to the center of the operating plate 4 protrudes toward the front wall 1a, and the peripheral edge protruding as illustrated in FIG. There is a case where a situation in which the player gets stuck on the hole edge of the circular hole 2 and cannot return to the original state (hereinafter, referred to as an oblique lock) may occur. Such an oblique lock of the operation plate 4 is relatively easily generated especially when one of the operation plate 4 and the one of the lamp pin through holes is pushed in one side.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lamp socket which can be made small and inexpensive, and which can reduce the oblique locking of the operation plate when the operation plate is pushed by a finger in a lamp mounting operation. .

[0015]

SUMMARY OF THE INVENTION The present invention provides a socket body having a circular hole at one longitudinal end of a front wall and a lead wire connecting hole at the other longitudinal end of the front wall.
An operating plate having a pair of lamp pin through-holes and closing the circular hole and housed in the socket body, and being built in the socket body over the operating plate and the lead wire connection hole, The present invention is applied to a lamp socket including a pair of terminal fittings having a spring property for individually closing the holes and pressing the operation plate against the edge of the circular hole.

In order to achieve the above object, a flange of the operating plate which is engaged with a hole edge of the circular hole has a first shape.
A groove and a second groove are provided, respectively, and the second groove is provided so as to be shifted to a side opposite to the first groove with respect to a position where the pair of lamp pin through holes are arranged, and the flange is provided with the second groove. A pair of first convex portions are provided on both sides of the two groove portions so as to protrude, and a pair of second convex portions are provided so as to protrude with the second groove portion and the pair of first convex portions interposed therebetween. The width between the second convex portions is the maximum width of the operating plate, and the shape of the operating plate is tapered toward the side opposite to the second groove portion from the maximum width portion, and the one end of the socket body A first guide boss in which the first groove portion is engaged in the socket body, wherein the portion has a tapered shape following the tapered shape of the operation plate;
A second guide boss with which the second groove is engaged;
A pair of third guide bosses with which the projections are engaged are provided so as to extend in the thickness direction of the socket body.

[0017]

In the lamp socket, the flange of the operating plate engaged with the edge of the circular hole of the socket body has the first
A groove portion and a second groove portion are provided, respectively, and the second groove portion is provided so as to be shifted to a side opposite to the first groove portion with respect to a position where the pair of lamp pin through holes are arranged, and a flange is provided on both sides of the second groove portion. A pair of first convex portions are provided so as to protrude, and a pair of second convex portions are provided so as to protrude with the second groove portion and the pair of first convex portions interposed therebetween. Is set to the maximum width of the operation plate, and the shape of the operation plate is tapered toward the side opposite to the second groove portion from the maximum width portion.

Therefore, it is not necessary to provide a pair of grooves on both sides of the flange of the operating plate in the direction in which the pair of lamp pin through holes are arranged, thereby making it possible to reduce the size of the operating plate. By the same use, the second guide boss engaged with the second groove portion and the pair of third guide bosses engaged with the pair of second convex portions are respectively provided with the width of the socket body on both sides of the maximum diameter portion of the circular hole. Since it is not necessary to provide the second guide boss at the both sides in the direction, the second guide boss can be provided at a position shifted toward the second groove portion from the maximum diameter portion of the circular hole along the width direction of the socket body. Therefore, no special space is required at both side positions of the circular hole corresponding to both side positions in the arrangement direction of the pair of lamp pin through holes in the socket body, and one end of the socket body provided with the circular hole is provided. Can be a tapered shape following the tapered shape of the operation plate. Therefore, the entire socket can be reduced in size.

The first to third guide bosses engage with the respective grooves or the respective convex portions of the operating plate to guide the movement of the operating plate in the thickness direction of the socket body at four or more places. In this case, the inclination of the operation plate when the operation plate is strongly pushed by a finger or the like can be suppressed. In addition, since each of the protrusions provided so as to protrude from the flange of the operation plate is projected more than the other portion of the flange, even when the operation plate is pushed into the socket body and inclined, each of the protrusions is provided. The projection can reliably face and contact the back surface of the front wall of the socket body. As a result, the leading edge of each projection is prevented from being caught on the edge of the circular hole of the socket body so that the operating plate is obliquely locked when the operating plate is pushed by a finger in the lamp mounting operation. To do less.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 11 denotes a socket body formed of a synthetic resin having ultraviolet light resistance and heat resistance, for example, a urea resin which can be obtained at a low cost. (See FIG. 3).

The main body 12 has a structure in which a peripheral wall 12b that is bent rearward is provided integrally with a peripheral edge of a front wall 12a, and a rear surface is opened. A circular hole 15 is formed in the front wall 12a at one end of the socket body 11 in the longitudinal direction (the vertical direction in FIGS. 1 to 3 and the like).

At the other longitudinal end of the socket body 11,
A slit-shaped mounting groove 1 opened at both ends in the width direction on both front and rear surfaces and a peripheral side surface of the main body case 11.
6 are formed respectively. These mounting grooves 16 are for mounting sockets, and by inserting these grooves into socket mounting brackets fixed to a lighting fixture body (not shown), a lamp socket can be mounted on the mounting brackets. I have.

The other end of the main body 12 is provided with a first lead wire connection hole 17 of two pairs and a second lead wire connection hole 18 of the same two pairs. And the first lead wire connection hole 17
A release hole 19 and a second release hole 20 are provided in the vicinity of and corresponding to the second lead wire connection hole 18, respectively. The entrances of these holes 17 to 20 are respectively opened to the front of the front wall 12a.

The inner portions of the first and second lead wire connection holes 18 and 19 are tapered as shown in FIG. The distal ends of the core wires of the in-device wiring lead wires provided in the lighting device main body are inserted into these connection holes 18 and 19, respectively. Each of the first and second release holes 19 and 20 has a slit shape, and is a connection release tool such as a screwdriver that pushes a lock terminal portion to be described later when a miswired lead wire or the like is removed from the lamp socket. Is inserted.

As shown in FIG. 6, a rib-shaped fitting edge 13a is provided on the rear surface of the peripheral portion of the main body lid 13 so as to enter the inside of the rear opening edge of the main body portion 12. A pair of screw receiving protrusions 13b to be screwed are protruded.

An operating plate 21 is accommodated in the socket body 11 so as to close the circular hole 15. The operation plate 21 is an integrally molded product of urea resin, and is formed by providing a flange 21b around the periphery of a circular operation plate main portion 21a slightly smaller than the circular hole 15 as shown in FIG. The operation plate main portion 21a is provided with a pair of lamp pin through holes 22.

In FIGS. 7B and 7C, reference numeral 23 denotes a built-up portion provided on the back surface of the operation plate main portion 21b and surrounds the lamp pin through hole 22, and 24 denotes a lamp pin through hole on the back surface of the operation plate main portion 21b. The partition projections are located between the projections 22. The partition projection 24 comes into contact with the inner surface of the main body cover 13 when the operation plate 21 is strongly pushed in, and
It functions as a stopper for restricting the pushing of the terminal 1, thereby preventing excessive deformation of a terminal fitting described later.

As shown in FIG. 7C, the flange 21b is connected to the surface of the operation plate 21a with a step. As shown in FIGS. 7A and 7B, the flange 21b has one first groove 25, one second groove 26, a pair of second protrusions 27, and a pair of second protrusions. Parts 28 are provided respectively.

The first groove portion 25 and the second groove portion 26 are respectively formed on opposite sides which are separated from each other by, for example, 180 ° with respect to a straight line A passing through the center of the operation plate main portion 21a and connecting the two lamp pin through holes 22. I have. Note that a plurality of the first groove portions 25 may be provided on the opposite side of the straight line A from the second groove portion 26. In this case, the action of suppressing the inclination of the operating plate 21 when the operating plate 21 is pushed in can be increased.

The pair of first convex portions 27 are located on both sides of the second groove portion 26, and are provided so as to project over the groove portion 26, respectively. Similarly, the pair of second convex portions 28
The second groove 26 and the pair of second protrusions 28 are placed between each other and are provided so as to protrude. Therefore, the first,
The second convex portions 27 and 28 are both provided on the opposite side of the first groove 25 with respect to the straight line A.

Since the first and second convex portions 27 and 28 are provided so as to protrude as described above, they protrude more outward than the other flange portions. That is, B in FIGS. 7A and 7B is a trajectory of a circle drawn with a radius extending from the center of the operating plate main portion 21a to the tip of the other flange portion. The first and second convex portions 27 and 28 are projected.

By providing the second convex portion 28 on the flange 21b as described above, the pair of second
The width C between the convex portions 28 is set as the maximum width of the operation plate 21, and the opposite side of the maximum width portion from the second groove portion 26,
In the illustrated example, the shape of the operation plate 21 is tapered toward the first groove 25 side. The one end in the longitudinal direction of the socket body 11 where the circular hole 15 is provided has a tapered shape whose shape follows the tapered shape of the operation plate 21 as shown in FIGS.

In the socket main body 11, one first guide boss 29 is provided, one second guide boss 30 is provided, and a pair of third guide bosses 3 are provided.
1 is provided.

As shown in FIGS. 3 to 5 and the like, the first groove 2
The first guide boss 29 with which the socket 5 is engaged is provided on the inner surface of the peripheral wall 12 b of the main body 12 in a rib shape extending in the thickness direction of the socket main body 11. The second guide boss 30 with which the second groove 26 is engaged is connected to the front wall 12 of the main body 12.
A is provided extending from the back surface of the socket body 11 in the thickness direction of the socket body 11. The second guide boss 30 forms a part of a partition wall 32 provided at a central portion in the width direction of the main body 12. The pair of third guide bosses 31 with which the pair of second protrusions 28 are respectively engaged are formed on the peripheral wall 12 b of the main body 12.
Are formed in a rib shape extending in the thickness direction of the socket body 11 on the inner surface of the socket body 11. The second and third convex portions 30 and 31 together with the second groove portion 26 are located on both sides of the circular hole 15 corresponding to the position where the lamp pin through holes 22 of the operating plate 21 are arranged, and are connected to the lead wire connecting holes 17 and 18. The first groove portion 25 is provided so as to be shifted to the side, in other words, to the position where the pair of lamp pin through holes 22 are arranged.

The operating plate 21 has the first groove 25 engaged with the first guide boss 29, the second groove 26 engaged with the second guide boss 30, and a pair of second projections 2.
8 are respectively engaged with the third guide bosses 31, and are slidably accommodated in the main body 12 along the respective bosses 29 to 31. Further, in this stored state, as shown in FIGS.
The second and third guide bosses 30, 3
1 and is disposed between these bosses 30 and 31. The rotation of the operation plate 21 is prevented by the stopper action.

In the socket body 11, a pair of terminal fittings 33 are housed on both sides of the partition wall 32. These metal fittings 33 are attached to the partition wall 32 and the inner surface opposing the partition wall 32 by inserting the metal part 33 into a mounting groove 34 (see FIG. 5) provided along the thickness direction of the main body 11. These terminal fittings 33 are prevented from coming off by the body cover 13.

One end of the terminal fitting 33 is elastically deformable, and is pressed against the back surface of the operation plate 21 in a bent state.
The operating plate 21 is pressed against the edge of the circular hole 15.
The tip portion of this one end is a pin contact portion 33a that closes the lamp pin through hole 22. The other end of the terminal fitting 33 forms an elastically deformable self-locking lock terminal 33b. The lock terminal portion 33b is obliquely provided to face each of the lead wire connection holes 17 and 18, and bites into the core wire of the lead wire inserted into these holes 17 and 18, thereby forming the lead wire. The wires are mechanically and electrically connected.

The pair of lamp sockets having the above-described configuration is
Both ends of a straight tube fluorescent lamp provided by inserting a lamp pin into a pair of lamp pin through holes 22 of the operation plate 21 are supported. In this case, the lamp pin is connected to the terminal fitting 33.
And press it while further bending it to the lock terminal part 33 of
The lamp is electrically connected to the terminal fitting 33, and the operating plate 21 supports a lamp pin passing therethrough, thereby supporting the straight tube fluorescent lamp.

When mounting such a straight tube fluorescent lamp, even if the operator pushes the operating plate 21 into the socket body 11 with a finger before inserting the lamp pin, the operating plate 21 is so-called. Diagonal lock can be reduced.

That is, the operation plate 21 has its first and second
The grooves 25 and 26 are separately and slidably engaged with the first and second guide bosses 29 and 30, respectively, and the pair of second protrusions 28 are slidably engaged with the pair of third guide bosses 31, respectively. So that the operating plate 21 is connected to the socket body 1.
The movement in the thickness direction 1 is guided at four or more places. Therefore, the inclination of the operation plate 21 when the operation plate 21 is strongly pushed by a finger or the like can be suppressed by these engagements, particularly, the engagement between the second groove portion 26 and the second guide boss 30.

In addition, a pair of first and second projections 2 are provided, each of which protrudes from the flange 21b of the operation plate 21.
Since the projections 7 and 28 protrude from the other portion of the flange 21b, even when the operation plate 21 is pushed into the socket main body 11 and is inclined, the projections 27 and 28 are located in front of the socket main body 11. It is possible to reliably face and contact the rear surface of the wall 12a. This prevents the leading edges of the projections 27 and 28 from being caught so as to ride on the edge of the circular hole 15 of the socket body 11.

For these reasons, when the operation plate 21 is pushed with a finger in the lamp mounting operation described above, the operation plate 2
1 can reduce diagonal locking.

Further, the lamp socket having the above-described structure is provided with an operating plate 2 which is engaged with the edge of the circular hole 15 of the socket body 11.
The first flange 21b is provided with a first groove 25 and a second groove 26, respectively, and the second groove 26 is provided so as to be shifted to a side opposite to the first groove 25 with respect to a position where the pair of lamp pin through holes 22 are arranged. And the flange has a second groove 2
6, a pair of first convex portions 27 are provided so as to protrude, and a pair of second convex portions 28 is provided so as to protrude with the second groove portion 26 and the pair of first convex portions 27 interposed therebetween. The width C between the pair of second protrusions 28 is set to the maximum width of the operation plate 21, and the second groove 26
The shape of the operation plate 21 is tapered toward the opposite side, so that the overall shape of the socket can be made smaller.

That is, according to the above configuration, it is not necessary to provide a pair of grooves at both sides of the flange 21a of the operation plate 21 in the direction in which the pair of lamp pin through holes 22 are arranged, so that the shape of the operation plate 21 can be reduced in size. By the same use, the second guide boss 30 engaged with the second groove 26 and the pair of third guide bosses 31 engaged with the pair of second convex portions 28 are respectively connected to the maximum diameter portion (socket) of the circular hole 15. It is not necessary to provide both sides in the width direction of the socket body 11 on both sides of the socket body 11 (in the width direction of the body 11). The guide boss 30 can be provided at a position shifted toward the second groove 26. Therefore, no special space for providing the guide boss is required on both sides of the circular hole 15 corresponding to both sides in the direction of arrangement of the pair of lamp pin through holes 22 in the socket body 11.

Therefore, the shape of one end of the socket body 11 where the circular hole 15 is provided can be tapered in accordance with the tapered shape of the operating plate 21.
The whole socket can be miniaturized as shown in FIG.

Since the working plate 21 and the socket body 11 can be made small in this way, the resin material forming them can be reduced, and the molding cost can be reduced accordingly.

Further, as described above, the lamp socket of this embodiment mainly engages with the second groove 26 and the second guide boss 30, engages with the second projection 28 and the third guide boss 31, In addition, since the oblique lock of the operation plate 21 can be reduced by the first and third protrusions 27 and 28, the engagement of the first groove 25 and the first guide boss 29 guides the movement of the operation plate 21. The function should be the main. Therefore, the first
Both the depth of the groove 25 and the height of the first guide boss 29 can be shortened, and accordingly, the height H (see FIG. 3) in the longitudinal direction of the socket body 11 can be shortened, and the socket body 11 can be further reduced in size.

[0048]

As described above in detail, according to the lamp socket of the present invention, the shape of the operating plate is small, and the shape of one end of the socket body provided with the circular hole is formed into the tapered shape of the operating plate. With a configuration that can be shaped like a tapered shape,
The whole socket can be made small, and accordingly, it can be made inexpensively. Moreover, not only can the operating plate be tilted when the operating plate is strongly pushed into the socket body by a finger or the like, but also when the operating plate is tilted, each protrusion is formed at the edge of the circular hole of the socket body. With the configuration that can prevent the user from being stuck on the vehicle, it is possible to reduce the possibility that the operation plate is obliquely locked when the operation plate is pressed by a finger in the lamp mounting operation.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a lamp socket according to one embodiment of the present invention.

FIG. 2 is a side view partially showing the configuration of the lamp socket according to the embodiment;

FIG. 3 is an exemplary front view showing the configuration of the lamp socket according to the embodiment;

FIG. 4 is a rear view showing the configuration of the lamp socket according to the embodiment, with its main body cover removed.

FIG. 5 is a rear view showing the configuration of the main body of the lamp socket according to the embodiment.

FIG. 6 is a rear view showing the configuration of the main body cover of the lamp socket according to the embodiment.

FIG. 7A is a front view showing a configuration of an operation plate of the lamp socket according to the embodiment. (B) is a rear view which shows the structure of the operation plate of the lamp socket which concerns on the example. FIG. 7C is a cross-sectional view showing the configuration of the operation plate of the lamp socket according to the embodiment along the line Z-Z in FIG.

FIG. 8 is a side view showing a configuration of a lamp socket according to a conventional example.

FIG. 9 is a side view showing a configuration of the lamp socket according to the conventional example in a partially sectional view.

FIG. 10 is a front view showing a configuration of a lamp socket according to the conventional example.

FIG. 11 is a rear view showing the configuration of the lamp socket according to the conventional example with its main body cover removed.

[Explanation of symbols]

11 ... socket body, 12a ... front wall,
12b: peripheral wall, 15: circular hole,
17, 18: lead wire connection hole, 21: operating plate,
21a: main part of operating plate 21b: flange, 22: through hole of lamp pin, 25: first
Groove, 26 ... Second groove, 27 ... First convex, 28 ... Second convex, 29 ...
1st guide boss, 30 ... 2nd guide boss,
31: Third guide boss.

Continuation of the front page (56) References JP-A-4-355081 (JP, A) JP-A-5-1222079 (JP, U) JP-A-60-50477 (JP, U) JP-A-54-67578 (JP) , U) Japanese Utility Model 364491 (JP, U) Japanese Utility Model 234093 (JP, U) Japanese Utility Model 61-8987 (JP, U) Japanese Utility Model 54-84881 (JP, U) Japanese Utility Model 54-72386 (JP, U) Actually open 53-122079 (JP, U) Actually open 1974-9976 (JP, U) Actually open 4-35382 (JP, U) Actually open 1974-32473 (JP, U U) U.S.A. 4-81487 (JP, U) U.S.A. 4-72490 (JP, U) U.S.A. 58-73582 (JP, U) U.S.A. 58-10388 (JP, U) U.S.A. 37 -14879 (JP, Y1) Jikken 31-1060 (JP, Y1) Jikken 30-16259 (JP, Y1) Jiko 32-2682 (JP, Y1) (58) Fields investigated (Int. . ^7, DB name) H01R 33/08 F21V 19/00 320

Claims (1)

(57) [Claims] A socket body having a circular hole at one longitudinal end of the front wall and a lead wire connecting hole at the other longitudinal end of the front wall; and a pair of lamp pin through holes; An operating plate housed in the socket body by closing the circular hole, and the operating plate being built in the socket body over the operating plate and the lead wire connection hole, and separately closing the lamp pin through holes. A pair of terminal fittings having a resiliency for pressing a pair of terminal fittings against a hole edge of the circular hole, wherein a first groove portion and a second groove portion are formed on a flange of the operation plate engaged with the hole edge of the circular hole. And the second
The groove portion is provided so as to be shifted to a side opposite to the first groove portion with respect to the position where the pair of lamp pin through holes are arranged, and the flange has a pair of first convex portions located on both sides of the second groove portion. The second groove and the pair of first protrusions are interposed, and a pair of second protrusions are provided so as to protrude, and the width between the pair of second protrusions is set to the maximum of the operation plate. The shape of the operating plate is tapered toward the side opposite to the second groove portion from the maximum width portion, and the shape of the one end of the socket body is tapered in accordance with the tapered shape of the operating plate. A first shape with which the first groove is engaged in the socket body.
A guide boss, a second guide boss with which the second groove portion is engaged, and a pair of third guide bosses with which the second convex portion is engaged are provided extending in the thickness direction of the socket body. A lamp socket, characterized in that: