JP5780900B2 - Sockets and lighting fixtures - Google Patents

Description

  The present invention relates to a socket and a lighting fixture for mounting a base of a straight tube lamp, for example.

  Recently, straight tube LED lamps are sold as an alternative to straight tube fluorescent lamps, but many of them employ the same G13 base as conventional straight tube fluorescent lamps. Therefore, it becomes possible to attach to the conventional fluorescent lamp lighting fixture. However, many straight tube LED lamps are designated as usable (attachable) lighting fixtures (for example, for electronic ballasts, glow ballasts, etc.). Therefore, there is a possibility that the user mistakenly attaches the straight tube LED lamp to an unusable lighting fixture, and the attached straight tube LED lamp or the ballast may break down.

  In order to prevent such an error, a standard for a straight tube type LED lamp base having a new base different from the conventional G13 base is known (JEL907).

  Conventionally, with respect to lighting fixtures that use straight tube fluorescent lamps, the socket receiving portion that contacts the lamp base is movable in the contact direction in order to cope with variations in the lamp length of the straight tube fluorescent lamp. There exists a socket provided with the structure stored in a socket (for example, patent documents 1).

  As another method, there is a socket in which a spring is disposed on the rear surface of the socket to absorb the entire length of the lamp (for example, Patent Document 2).

  In Patent Document 1 and Patent Document 2, the dimension between the sockets is arranged to be shorter than the total length of the lamp, and has a structure that absorbs the total length of the lamp.

JP-A-9-223554 (page 2, left column, line 48 to right column, line 30) JP-A-10-69811 (page 2, left column, line 43 to right column, line 28)

  In Patent Document 1, after the lamp is mounted, a part of the lamp base end portion is housed inside the socket so that it does not fall. However, a space for housing the base inside the socket is required, and the socket is large. Therefore, there is a problem that the cost is increased and the design is inferior.

  In Patent Document 2, since the lamp is inserted from the direction perpendicular to the lamp base contact portion of the socket and the spring on the rear surface of the socket is contracted, no force is directly applied to the contact direction, which is the movable direction of the socket, and it is unnecessary. Power is required. Although the lamp is turned on by rotating 90 °, the lamp may rotate and fall due to insufficient rotation or vibration.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a structure that can absorb variations in the overall length of the lamp, reduce the size of the socket, and easily insert the lamp.

  According to the socket according to the present invention, the socket is attached to a mounting surface having a mounting hole, and is a socket for mounting one base of a straight tube type lamp having a base on both sides, and includes a front surface, a rear surface, and a side surface. A socket body provided with one through hole in the front surface for passing a tip of a one-pole grounding pin protruding from the one base of the straight tube lamp, and a guide portion protruding from the side surface to the rear surface side. A guide portion that is inserted into the mounting hole of the mounting surface and guides the movement of the socket body in the front-rear direction; and provided at a tip of the guide portion so that the guide portion does not come out of the mounting hole. And a claw portion that is hooked on a peripheral edge of the mounting hole, and an elastic body disposed on the rear surface.

  According to the socket according to the present invention, the socket is attached to a mounting surface having a mounting hole, and is a socket for mounting one base of a straight tube type lamp having a base on both sides, and includes a front surface, a rear surface, and a side surface. A socket body provided with one through hole in the front surface for passing a tip of a one-pole grounding pin protruding from the one base of the straight tube lamp, and a guide portion protruding from the side surface to the rear surface side. A guide portion that is inserted into the mounting hole of the mounting surface and guides the movement of the socket body in the front-rear direction; and provided at a tip of the guide portion so that the guide portion does not come out of the mounting hole. Since it has a claw part hooked on the periphery of the mounting hole and an elastic body arranged on the rear surface, the variation in lamp length of the straight tube lamp can be absorbed and the socket can be downsized. Together, easy to insert the lamp, the lamp can be achieved hardly effect falls.

It is a perspective view which shows the lighting fixture 10 of Embodiment 1. FIG. It is a perspective view of the straight tube | pipe type LED lamp 20 which concerns on Embodiment 1, (a) is a whole perspective view of the straight tube | pipe type LED lamp 20, (b) is a partial expansion perspective view of the ground side base 21, (c). FIG. 4 is a partially enlarged perspective view of a power supply side cap 24. 2 is an exploded perspective view of a ground side socket 30 according to Embodiment 1. FIG. It is the perspective view of the ground side socket 30 which concerns on Embodiment 1, (a) is the perspective view which looked at the ground side socket 30 from the front side, (b) is the perspective view which looked at the ground side socket 30 from the back side, FIG. 4C is a bottom view of the ground side socket 30. It is a figure which shows the attachment method which attaches the ground side socket 30 which concerns on Embodiment 1 to the attachment surface 14 of the instrument main body 11, (a) is a figure which shows the state before attaching the ground side socket 30 to the attachment surface 14. (B) is a figure which shows the state which attached the ground side socket 30 to the attachment surface 14. FIG. It is a perspective view of the electric power feeding side socket 70 which concerns on Embodiment 1, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the rear surface side. 3 is an exploded perspective view of a power supply side socket 70 according to Embodiment 1. FIG. It is a figure which shows the attachment method which attaches the ground side base 21 of the straight tube | pipe type LED lamp 20 to the ground side socket 30 which concerns on Embodiment 1, (a) is a figure which shows the state before attaching the ground side base 21. (B) is a figure which shows the state which attached the ground side base 21. FIG. 5 is an exploded perspective view of a ground side socket 101 according to Embodiment 2. FIG.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 10 according to the present embodiment. 2A and 2B are perspective views of the straight tube LED lamp 20 according to the present embodiment. FIG. 2A is an overall perspective view of the straight tube LED lamp 20, and FIG. , (C) is a partially enlarged perspective view of the power supply side cap 24. FIG.

  The whole structure of the lighting fixture 10 and the straight tube | pipe type LED lamp 20 which concern on this Embodiment is demonstrated using FIG.1 and FIG.2.

  As shown in FIG. 1, the lighting fixture 10 includes a fixture main body 11, a straight tube LED lamp 20, and a reflecting portion 12. Although FIG. 1 shows a lighting fixture 10 to which two straight tube LED lamps 20 can be mounted, one for mounting, three for mounting, four for mounting, and other straight tube LED lamps 20. Any lighting device that can be attached to the light source may be used.

  A straight tube LED lamp 20 mounted on the lighting apparatus 10 will be described with reference to FIG. As shown in FIG. 2 (a), the straight tube LED lamp 20 has ends on both sides, a grounding side base 21 which is a base for grounding at one end, and at the other end. A power supply side cap 24 for power supply is provided.

  The straight tube LED lamp 20 includes a cylindrical case 20a, and a long LED module (not shown) is accommodated in the case 20a.

  The straight tube LED lamp 20 according to the present embodiment is a straight tube LED lamp that has three electrodes in one lamp and has two types of cap shapes.

  Some straight tube LED lamp caps use a straight tube fluorescent lamp cap G13. The straight tube LED lamp 20 according to the present embodiment is different from the straight tube LED lamp using the base G13, and has a cylindrical (cylindrical) case 20a (light emitting portion) and a longitudinal direction of the case 20a. A grounding side base 21 provided at one end and a power feeding side base 24 provided at the other end side in the longitudinal direction of the case 20a are also provided.

  As shown in FIG. 2 (b), the ground side base 21 has a ground pin 23 (one electrode) at the center of the base (the ground side receiving contact portion 22 at one end of the straight tube LED lamp 20). A conductive pin). The ground pin 23 includes a cylindrical portion 23a that is a circular column extending in the lamp axis direction, and an elliptical portion 23b. The cylinder part 23a is a cylinder protruding from the approximate center of the ground-side metal receiving contact part 22, and includes an elliptical part 23b that is an elliptic cylinder at the tip part. The purpose of the ground pin 23 is to connect the metal portion of the straight tube type LED lamp 20 and the luminaire 10 to ground.

  The minor axis of the elliptical part 23b is larger than the diameter of the circle in the cross section of the cylindrical part 23a. Since the elliptical part 23b is larger than the cross section of the cylindrical part 23a, it is provided so as to protrude from the outer periphery of the cylindrical part 23a. The ground pin 23 is connected to a touchable metal part that is not a charged part of the straight tube LED lamp 20, for example, a radiation fin of the LED module.

  As shown in FIG. 2C, the power supply side cap 24 includes a pair of power supply pins 26 that are two-pole electrodes extending from the power supply side receiving contact portion 25 in the lamp axis direction. The power supply pin 26 is a pair of L-shaped conductive pins provided on the surface of the power supply side receiving contact portion 25, and extends vertically from the shaft portion 26a extending in the lamp axis direction and the tip portion of the shaft portion 26a. And a retaining portion 26b.

  The power supply pin 26 is connected to a power supply device provided in the lighting fixture 10 and supplies power to the LED module housed in the straight tube LED lamp 20. The power supply pin 26 is intended to supply power to the straight tube LED lamp.

  As shown in FIG. 2A, the length between the ground-side metal receiving contact portion 22 and the power supply-side metal receiving contact portion 25 is the entire length of the lamp, and is hereinafter referred to as a lamp length L.

  FIG. 3 is an exploded perspective view of the ground side socket 30 according to the present embodiment. 4A and 4B are perspective views of the ground side socket 30 according to the present embodiment, in which FIG. 4A is a perspective view of the ground side socket 30 viewed from the front side, and FIG. 4B is a view of the ground side socket 30 viewed from the rear side. FIG. 4C is a bottom view of the ground side socket 30.

  The structure of the ground side socket 30 according to the present embodiment will be described with reference to FIGS.

  As shown in FIG. 3, the ground side socket 30 includes a main body 39, a pair of ground metal fittings 50 (a pair of contact pieces) housed in the main body 39, a back cover 35 that covers the rear surface of the main body 39, And a spring 40 (elastic body) attached to the outer surface of the lid 35. Further, as shown in FIG. 4, the main body 39 and the back cover 35 are combined to form a socket main body 38 that is an outline of the ground side socket 30.

  Hereinafter, in order to simplify the description, as shown in FIG. 4A, in the ground side socket 30, the irradiation direction when the lamp is mounted is the upper side, and the non-irradiation direction is the lower side.

  The main body 39 is formed of a thermoplastic resin insulating material, such as polycarbonate or polybutylene terephthalate. The main body 39 includes a front surface 39a, side surfaces 31b and 31c, an upper surface 31d, and a bottom surface 31e.

  The front surface 39a is provided with a ground pin insertion hole 32 (passage hole) into which the ground pin 23 of the straight tube LED lamp 20 is inserted. The ground pin insertion hole 32 is substantially the same as the elliptical shape of the tip surface of the ellipse portion 23b of the ground pin 23, and the ground pin 23 replaces the elliptical shape of the tip surface of the ellipse portion 23b when inserted with the elliptical shape of the ground pin insertion hole 32. It is formed so that it cannot be inserted unless it is inserted in accordance with the above. In addition, the ground pin insertion hole 32 is formed in a size that prevents the pair of power supply pins 26 from being inserted. As a result, the pair of power supply pins 26 cannot be erroneously inserted into the ground-side socket 30, and safety during installation is improved.

  The upper surface 31d is a convex (dome-shaped) curved surface. The surface facing the front surface 39a is open. A back cover 35 is attached so as to close the opening. As shown in FIG. 4B, the rear surface 35a of the back cover 35 is provided with a protrusion 37 for attaching a spring 40 to be described later.

  As shown in FIG. 3 or 4, the side surfaces 31 b and 31 c are provided with mounting feet 33 b and 33 c (guide portions) for mounting the ground side socket 30 to the mounting surface 14 of the instrument body 11. The mounting feet 33b and 33c (also referred to as mounting feet 33) are a pair of mounting feet protruding from the side surfaces 31b and 31c (also referred to as side surfaces 31) to the rear surface 35a side. The mounting feet 33 (33b, 33c) (guide portions) are rod-shaped guide portions protruding from the side surfaces 31b, 31c toward the rear surface 35a, and are mounting holes 13 (13b, 13c) formed in the mounting surface 14 (FIG. 5) and guides the ground side socket 30 (main body 39) in the front-rear direction. At the tip of the mounting foot 33 (33b, 33c), the claw portion 34 (34b, 34c) hooked around the periphery of the mounting hole 13 so that the mounting foot 33 (33b, 33c) does not come out of the mounting hole 13 (13b, 13c). ).

  The back cover 35 is formed of a thermoplastic resin insulating material such as polycarbonate or polybutylene terephthalate. The back cover 35 includes a hook receiving part 36a and a hooking claw 36b that are fitted to the main body 39, and a protrusion 37 for attaching a spring 40 described later on the rear side. The main body 39 includes a fitting portion (not shown) that fits the hook receiving portion 36a at a position facing the hook receiving portion 36a of the back cover 35. The bottom surface 31e of the main body 39 is provided with a claw engaging portion 36c (see FIG. 4C) that fits the hooking claw 36b at a position facing the hooking claw 36b of the back cover 35.

  A pair of grounding metal fittings 50 (50a, 50b) (a pair of contact pieces) are housed inside the main body 39 (inside the socket main body 38 (see FIG. 4)). In the present embodiment, the pair of grounding metal fittings 50 (50a, 50b) is used, but the grounding metal fittings 50 may be integrally formed.

  Each of the ground metal fittings 50a and 50b of the pair of ground metal fittings 50 includes ground pin holding portions 52a and 52b (contact portions), and quick connection terminals 51a and 51b. The ground pin holding portions 52 a and 52 b sandwich and hold the tip end portion (ellipse portion 23 b (projection portion)) of the ground pin 23 inserted into the ground pin insertion hole 32 and are electrically connected to the ground pin 23. .

  As shown in FIG. 4C, the bottom surface 31e of the ground side socket 30 is provided with an electric wire insertion hole 36d into which an electric wire is inserted. Further, a claw engaging portion 36c that engages with a hooking claw 36b provided on the lower side of the inner surface of the back cover 35 shown in FIG. 3 is provided.

  The grounding fitting 50 (the respective grounding fittings 50a and 50b of the pair of grounding fittings 50) is connected to an electric wire (ground wire) inserted into the main body 39 through the electric wire insertion hole 36d. Is provided on the lower side. The quick connection terminals 51a and 51b are formed at the lower end of the grounding metal fitting 50 along the inner surface of the bottom surface 31e of the main body 39, and physically connect the electric wires inserted into the main body 39 from the electric wire insertion holes 36d. Connect electrically and electrically.

  The electric wire inserted into the electric wire insertion hole 36d is connected to the quick connection terminal 51 of the ground metal fitting 50. That is, the ground metal fitting 50 is connected to an electric wire (not shown) inserted from the electric wire insertion hole 36 d on the bottom surface of the ground side socket 30, and the ground side cap 21 of the straight tube type LED lamp 20 inserted from the ground pin insertion hole 32. In addition to being connected to the (grounding pin 23), it is connected to the grounding part of the instrument body 11. As a result, the metal part that can be touched but not the charged part of the straight tube LED lamp 20 is grounded via the ground pin 23.

  The spring 40 (elastic body) is a long leaf spring that is made of a metal that has springiness (elasticity) and is hard to rust, such as stainless steel. As shown in FIG. 3, the spring 40 includes a central portion 43 attached to the rear surface 35 a of the ground side socket 30, and biasing portions 44 on both sides formed so as to spread from the central portion 43 toward the attachment surface 14. It is a leaf spring provided.

  As shown in FIG. 4B, the spring 40 has a flat surface in which the central portion 43 comes into contact with the rear surface 35a. A cover mounting hole 41 that engages with a protrusion 37 provided on the rear surface 35 a of the back cover 35 is provided at the approximate center of the center portion 43 of the spring 40. In addition, a pair of foot through holes 42 formed at positions opposite to the claw portions 34 of the attachment feet 33 of the main body 39 are provided on both sides of the spring 40 in the vicinity of the end portion 45, and the main body 39 and the spring 40 are fitted to each other. It has the structure to do.

  As shown in FIG. 4C, the width L5 between the end portions 45 on both sides of the spring 40 is longer than the width L6 of the rear surface 35a. Therefore, the end portions 45 on both sides of the spring 40 have portions protruding from the side portions on both sides of the rear surface 35a. A foot through hole 42 through which the attachment feet 33b and 33c are penetrated is provided in a portion protruding outward from the width L6 (side portions on both sides) of the rear surface 35a. That is, the spring 40 includes the foot through holes 42 in the vicinity of the end portion 45 on both sides. Thereby, it is possible to prevent the spring 40 from being detached from the ground-side socket 30 or falling due to vibration or the like when the lamp is mounted.

  FIG. 5 is a diagram showing an attachment method for attaching the ground side socket 30 to the attachment surface 14 of the instrument body 11, and FIG. 5A is a diagram showing a state before the ground side socket 30 is attached to the attachment surface 14. FIG. 6B is a diagram illustrating a state where the ground side socket 30 is attached to the attachment surface 14. In FIG. 5, the claw engaging portion 36c is omitted.

  As shown in FIG. 5A, mounting holes 13b and 13c are formed in the mounting surface 14 of the instrument body 11 at positions corresponding to the mounting legs 33b and 33c. An operator who attaches the grounding side socket 30 pinches the mounting feet 33b and 33c with a finger or the like and applies the force to the mounting feet 33b and 33c inward (P3 side), while attaching the mounting feet 33b and 33c to the mounting holes 13b. , 13c.

  As shown in FIG. 5 (b), when the operator passes the claw portion 34 at the tip of the mounting foot 33 through the mounting hole 13 and releases the finger, the mounting foot 33 spreads outward (P4 side). Return to the position (shape). Thereby, the claw part 34 is caught on the periphery of the attachment hole 13, and the attachment foot 33 does not come out of the attachment hole 13.

  Further, as shown in FIG. 5 (b), the rear surface 35a of the socket body 38 is given a force (P5) by which the rear surface 35a is separated from the mounting surface 14 by a spring 40, and the claw portion 34 is mounted on the mounting surface 14a. By being hooked on the periphery of the hole 13, it is positioned at a predetermined position (position shown in FIG. 5B). That is, the ground-side socket 30 is configured to be movable in the front-rear direction, but can be stably positioned at a predetermined position (position shown in FIG. 5B) when nothing is attached. It is possible to design.

  6A and 6B are perspective views of the power supply side socket 70 according to the first embodiment, where FIG. 6A is a perspective view seen from the front side, and FIG. 6B is a perspective view seen from the rear side. FIG. 7 is an exploded perspective view of the power supply side socket 70 according to the first embodiment. The overall configuration of the power supply side socket 70 will be described with reference to FIGS. 6 and 7.

  As shown in FIGS. 6 and 7, the power supply side socket 70 includes a main body 75, a pair of mounting feet 77 protruding from the side surface of the main body 75 toward the back cover 76, a lamp holding portion 71, and a lamp holding portion from the upper front side. A power feed pin insertion groove 72 extending to the portion 71, a pair of conductive fittings 73, and a back cover 76 are provided. A hooking claw 76 b that engages with a claw engaging portion 76 c formed on the bottom surface of the main body 75 is provided on the inner surface of the back cover 76.

  The power supply side socket 70 is formed of an insulating material of thermoplastic resin, for example, polycarbonate or polybutylene terephthalate. The power supply side socket 70 includes a power supply pin insertion groove 72 extending from the upper front side to the lamp holding portion 71, and the power supply side cap 24 of the straight tube LED lamp 20 is detachable.

  The power supply side socket 70 has a pair of conductive metal fittings 73 disposed therein. Like the ground side socket 30, the conductive metal fitting 73 includes a quick connection terminal 78, and a wire insertion hole 74 is provided on the bottom surface side of the power supply side socket 70. Prepare. The electric wire inserted from the electric wire insertion hole 74 is connected to the quick connection terminal 78. That is, the conductive fitting 73 is connected to an electric wire (not shown) and connected to a power output unit (power supply device) such as an electronic ballast. Further, the straight tube LED lamp 20 is inserted from the power supply pin insertion groove 72 and rotated by 90 ° in the lamp holding unit 71, so that the straight tube LED lamp 20 and a power output unit (power supply device) such as an electronic ballast Are connected to supply power.

  FIG. 8 is a view showing an attachment method for attaching the ground side base 21 of the straight tube type LED lamp 20 to the ground side socket 30, and (a) is a view showing a state before the ground side base 21 is attached. b) is a diagram showing a state in which the grounding side cap 21 is attached. A method of mounting the straight tube LED lamp 20 on the instrument body 11 will be described with reference to FIG.

  The front surface of the ground side socket 30 and the front surface of the power supply side socket 70 are attached to the instrument body 11 so as to face each other. The distance between the front surface of the ground side socket 30 attached to the appliance body 11 and the front surface of the power supply side socket 70 is arranged to be slightly shorter than the lamp length L of the straight tube LED lamp 20. Therefore, in order to mount the straight tube type LED lamp 20 on the fixture body 11, the ground side base 21 is brought into contact with the front surface 39a of the ground side socket 30, and the direction of the mounting surface 14 (the direction of contact of the lamp, the direction of P1). ), The ground pin 23 is inserted into the ground pin insertion hole 32.

(1) Step of Attaching the Ground Side Base 21 to the Ground Side Socket 30 The elliptical end surface shape of the elliptical portion 23b of the ground pin 23 (see FIG. The ground pin 23 is inserted into the ground pin insertion hole 32 (see FIG. 3) with the short diameter and long diameter of (b) referred to being matched (see FIG. 8A). Then, the ground-side metal receiving contact portion 22 of the ground-side base 21 is brought into contact with the front surface 39 a of the ground-side socket 30, and the front surface of the ground-side socket 30 is contacted by the ground-side metal receiving contact portion 22 of the ground-side base 21. The straight tube type LED lamp 20 is attached to the ground side socket 30 while pushing 39a in the P1 direction.

  Thereby, since the force pushed in the P1 direction for inserting the straight tube LED lamp 20 and the force in the P1 direction for contracting the spring 40 are substantially the same direction and equal, without applying extra force, The straight tube LED lamp 20 can be inserted into the ground side socket 30.

  The straight tube type LED lamp 20 is connected to a grounding side socket 30 connected to a grounding part (not shown) of the appliance main body 11, and there is no fear of electric shock even for a short time. Further, since the ground pin 23 enters the inside from the ground pin insertion hole 32 of the ground side socket 30, it is difficult to drop.

(2) A process of attaching the power supply side base 24 to the power supply side socket 70 With the ground side base 21 pressing the ground side socket 30 in the direction P1, the power supply pin 26 of the power supply side base 24 is moved from the irradiation direction side (upper side). It is inserted into the power supply pin insertion groove 72 of the power supply side socket 70 and is slid to the lamp holding portion 71. At this time, when the operator releases the pressing of the straight tube type LED lamp 20 against the ground side socket 30, a force to move the ground side socket 30 in the P2 direction is applied to the ground side socket 30 by the action of the spring 40. And the position which absorbed the difference | error of the lamp length L of the straight tube | pipe type LED lamp 20 and the distance between the front surface of the ground side socket 30 and the front surface of the electric power feeding side socket 70 with the force pushed to the P2 direction by this spring 40 Thus, the ground side socket 30 is stabilized.

  As shown in FIG. 8B, the front side of the ground side socket 30 and the power feeding side by the distance L <b> 2 between the back side surface of the mounting surface 14 and the claw portion 34 of the mounting foot 33 are separated by the ground side socket 30. An error in the distance from the front surface of the socket 70 can be absorbed. Thereafter, when the surface of the straight tube LED lamp 20 is rotated by 90 ° so that the irradiation surface is on the irradiation direction side (upper side), the power supply pin 26 is connected to the conductive metal fitting 73 (see FIG. 7) of the power supply side socket 70. Power is supplied to the LED lamp 20 to emit light.

  In addition, the ground side socket 30 and the power supply side socket 70 are pressed against the straight tube type LED lamp 20 by the urging of the spring 40, and the connection with the straight tube type LED lamp 20 is ensured. It becomes prevention.

  This is the end of the description of the method for mounting the straight tube LED lamp 20 on the instrument body 11.

  Removal of the straight tube type LED lamp 20 is performed in the reverse order of the mounting order. That is, the worker presses the straight tube LED lamp 20 against the ground side socket 30 and removes the power supply pin 26 from the power supply side socket 70 while moving it to the ground side socket 30 side. Then, the ground pin 23 is removed from the ground side socket 30. Thus, the ground side base 21 (ground pin 23) and the ground metal fitting 50 are connected to the end, and the electric shock protection performance is excellent.

Embodiment 2. FIG.
In the present embodiment, a ground side socket 101 including a grounding metal 60 different from the grounding metal 50 of the first embodiment will be described.

  FIG. 9 is an exploded perspective view of the ground side socket 101 according to the second embodiment. FIG. 9 is a diagram corresponding to FIG. 3, and the same components as those in FIG.

  In FIG. 9, the structure different from FIG. 3 of Embodiment 1 is a grounding metal 60 (conductive metal). The grounding metal 60 is provided inside the socket main body 38 and comes into contact with an elliptical part 23 b that is the tip of the grounding pin 23 that has passed through the grounding pin insertion hole 32. The elliptical portion 23b of the ground pin 23 contacts the ground metal fitting 60 and pushes the ground pin contact portion 62 of the ground metal fitting 60 toward the rear surface 35a. By this pressing force, the elliptical portion 23b of the ground pin 23 can be moved in the front-rear direction.

  As shown in FIG. 9, the ground metal fitting 60 includes a ground pin abutting portion 62 at a position facing the ground pin insertion hole 32. The ground pin contact portion 62 has an elastic force that moves in the lamp contact direction (front-rear direction), and is connected to the elliptical portion 23b of the ground pin 23 by surface contact. The ground pin abutting portion 62 has a curved surface that protrudes gently toward the ground pin insertion hole 32 side. The ground pin abutment portion 62 is an elastic body that is depressed in the direction of the back cover 35 by the elliptical portion 23b of the ground pin 23 and also has a force to push back the elliptical portion 23b of the ground pin 23 when pressed against the elliptical portion 23b of the ground pin 23. is there.

  When the ground pin contact portion 62 is pressed in the direction of the back cover 35 by the elliptical portion 23b of the ground pin 23, the ground pin contact portion 62 can move in the direction of the back cover 35 by a distance of L7 due to the elastic force. Further, as described with reference to FIG. 8B of the first embodiment, since the socket main body 38 can be moved in the direction of the attachment surface 14 by L2 by the spring 40, the straight tube LED lamp 20 attached to the ground side socket 101 is , (L2 + L7) can be moved in the front-rear direction.

  According to the ground side socket 101 according to the present embodiment, the amount of absorption due to the variation in the lamp length L can be improved by combining with the spring 40.

  Although Embodiments 1 and 2 have been described above, these two embodiments may be combined. Alternatively, one of these embodiments may be partially implemented. Alternatively, these two embodiments may be partially combined.

  DESCRIPTION OF SYMBOLS 10 Lighting fixture, 11 Appliance main body, 12 Reflection part, 13, 13b, 13c Mounting hole, 14 Mounting surface, 20 Straight tube type LED lamp, 20a Case, 21 Ground side base, 22 Ground side receiving contact part, 23 Ground Pin, 23a Cylinder part, 23b Ellipse part, 24 Feeding side cap, 25 Feeding side receiving contact part, 26 Feeding pin, 26a Shaft part, 26b Retaining part, 30 Grounding side socket, 31, 31b, 31c Side, 31d Top surface, 31e Bottom surface, 32 Ground pin insertion hole, 33, 33b, 33c Mounting foot, 34, 34b, 34c Claw part, 35 Back cover, 35a Rear surface, 36a Hook receiving part, 36b Hook claw, 36c Claw engaging part, 36d Wire insertion hole, 37 Protrusion, 38 Socket body, 39 Body, 39a Front surface, 40 Spring, 41 Cover mounting hole, 42 Foot through hole, 44 Biasing part, 45 end, 50, 50a, 50b Grounding metal fitting, 51, 51a, 51b Fast connection terminal, 52, 52a, 52b Grounding pin holding part, 60 Grounding metal fitting, 61 Fast connection terminal part, 62 Grounding pin contact 70, power supply side socket, 71 lamp holding part, 72 power supply pin insertion groove, 73 conductive metal fitting, 75 main body, 76 back cover, 76b hooking claw, 76c claw engagement part, 77 mounting foot, 78 quick connection terminal.

Claims (6)

Comprising a cap on both sides, and a cylindrical portion extending in the lamp axis direction, provided at the distal end portion of the cylindrical portion, the one pole of the lamp pins and a elliptical portion is a flat plate of the elliptical shape perpendicular to the lamp axis direction one in the socket for mounting the straight tube lamp having a mouthpiece,
And a front portion and a rear portion and side portions, a single passage hole formed in the front portion, such that the major axis of the oval along the vertical direction together with elliptical substantially the same shape of the elliptical portion A socket body provided with a through hole that allows the elliptical part to pass when the major axis of the elliptical part is matched with the major axis of the passage hole ;
A pair of fittings provided inside the socket body and sandwiching the elliptical part when the elliptical part passing through the passage hole is rotated 90 degrees;
Wherein A from the side surface guide portions projecting to the side of the rear surface portion, and a guide portion for guiding the movement in the longitudinal direction before Symbol socket body,
Disposed in the rear surface portion, an elastic member through-hole for passing the distal end of the guide portion is formed,
A socket provided at a tip of the guide portion, the hook being hooked on a peripheral edge of the through hole so that the elastic body is not detached from the socket body .   The socket body is
  2. The socket according to claim 1, wherein the elliptical part is allowed to pass only when the major axis of the elliptical part is matched with the major axis of the passage hole. The socket is attached to a mounting surface portion having a mounting hole,
The guide portion is inserted into the attachment hole of the attachment surface portion, and guides the movement of the socket body in the front-rear direction,
The straight tube lamp is
A flat contact portion formed around the base of the lamp pin,
The socket body is
By pressing the front surface portion in the direction of the rear surface portion while the contact portion is in contact with the front surface portion, a pressing force in the direction of the rear surface portion is applied to the front surface portion, and the pressing force is applied. And when the pressing force is released , the elastic body gives a force to separate the rear surface portion from the mounting surface portion and the claw portion. The socket according to claim 1 , wherein the socket is positioned at a predetermined position by being hooked on a peripheral edge of the mounting hole. The elastic body is a leaf spring, be a leaf spring comprising a central portion attached to the rear surface portion, and a biasing portion of the sides which are formed so as to extend toward the mounting surface portion from the central portion , by the tip of the urging portion of the urging portions of the sides is in contact with the mounting surface portion, the socket according to claim 3, characterized in that empower separating the rear surface portion of the mounting surface portion . The socket body, one of claims 1 to 4, characterized in that said passage hole is formed to a size that can not be inserted pair of power supply pins for the power supply to protrude from the other die of the straight tube lamp The socket described in Crab. A socket according to any of claims 1 to 5 ;
An instrument body having a mounting surface portion to which the socket is mounted,
A lighting apparatus comprising: a power supply device that supplies power to a straight tube lamp mounted in the socket.

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