JP6033102B2 - Holding socket and lighting fixture - Google Patents

Description

  The present invention relates to a holding socket for holding a holding pin of a holding-side base of a single-tube energization type straight tube lamp, and a lighting fixture including the holding socket.

  2. Description of the Related Art Conventionally, for lighting fixtures that use straight tube fluorescent lamps, a spring (mounting plate spring 30 of Patent Document 1) is disposed on the back of the socket in order to cope with variations in lamp length of straight tube fluorescent lamps. There is a socket that can absorb the entire length (for example, Patent Document 1). In particular, a lamp whose outer shell is made of resin expands or contracts due to the influence of heat. For this reason, in order to absorb the variation in the lamp length, a spring is disposed on the back surface of the socket as in Patent Document 1.

Japanese Patent Laid-Open No. 10-247415 (paragraphs [0011] to [0016])

  In the socket on the side that supports the lamp of Patent Document 1, there are many cases including a case portion that houses a pin holding portion (a pair of contact pieces 21) to which a holding pin (lamp pin 4) that holds the lamp is attached, and the periphery of the pin holding portion. Since it is composed of parts, there is a problem in that the member cost is increased accordingly and the assembling cost is also generated.

  In recent years, many straight tube LED lamps that are advantageous in terms of energy saving have been sold as alternatives to the straight tube fluorescent lamps. As the base of the straight tube LED lamp, a GX16t-5 base known in JIS C 7709 is used. The straight tube LED lamp of GX16t-5 cap adopts a connection method of a single cap energization method adopting an energization method on one side of the lamp. The single-tube energization type straight tube LED lamp includes a power supply side base for power supply on one end side and a holding side base for holding the lamp on the other end side.

  The socket to which the holding side cap of the straight tube LED lamp of the single cap energization method is required to hold the holding pin of the holding side cap. In the conventional holding socket, the case portion for housing the pin holding portion to which the holding pin for holding the lamp is mounted and the periphery of the pin holding portion are composed of many parts. There is a problem that assembly costs are also incurred.

  The socket according to the present invention has been made to solve the above-described problems, and can reduce the number of components of the holding-side socket that holds the lamp, eliminate the number of assembly steps, and reduce the cost. The purpose is that.

The holding socket of the present invention is
One end of a one-sided base energization system comprising a feeding side base having a feeding pin that receives power feeding, and the other end having a holding side base having a holding pin that is used only for holding without being fed. In the holding socket for holding the holding pin of the holding side base of the straight tube lamp,
A guide portion that is inserted from the front surface into a mounting hole that penetrates from the front surface to the back surface of the mounting plate; and provided at a tip of the guide portion, and the guide portion is inserted into the mounting hole. A socket body having a claw portion that passes through the mounting hole and stops the movement of the guide portion in the direction of the front surface from the back surface by being caught on the periphery of the mounting hole on the back surface;
A pin holding part that is disposed inside the socket body and holds the holding pin; and a pair of holding springs having an elastic part formed integrally with the pin holding part,
Each elastic part of the pair of holding springs is
When the guide portion is inserted into the mounting hole, the claw portion is caught on the peripheral edge of the back surface of the mounting hole by abutting against the front surface of the mounting plate and elastically deforming. An elastic force for urging the guide portion to move from the back surface toward the front surface is biased.

  According to the present invention, the number of components of the holding socket can be reduced, and the number of assembly steps of the holding socket can be reduced by reducing the number of components. Therefore, the cost can be reduced by reducing the number of components and the number of assembly steps.

FIG. 3 is a perspective view of lighting apparatus 1000 according to Embodiment 1. The X direction arrow view of FIG. The block diagram containing the internal circuit of the straight tube | pipe LED lamp 600 of Embodiment 1. FIG. FIG. 3 is a front perspective view of the first socket 300 according to the first embodiment. FIG. 6 is a rear perspective view of the first socket 300 according to the first embodiment. The front perspective view of the 2nd socket 400 of Embodiment 1. FIG. FIG. 6 is a rear perspective view of the second socket 400 of the first embodiment. FIG. 3 is an exploded perspective view of the second socket 400 according to the first embodiment. The Y direction arrow view of the holding spring 540 of FIG. The figure which shows the state which comprised the holding spring 540 which concerns on Embodiment 1 with the single component by integral molding. The figure which shows the attachment method which attaches the 2nd socket 400 of Embodiment 1 to the attachment surface 114a of the instrument main body 100 ((a) is the state before the attachment to the attachment surface 114a of the 2nd socket 400, (b) is State after installation).

Embodiment 1 FIG.
FIG. 1 is a perspective view of a lighting fixture 1000 according to the first embodiment. FIG. 2 is a view in the X direction of FIG. 4 to 9 described later indicate the X direction, this means the X direction in FIG. FIG. 3 is a diagram illustrating an example of the straight tube LED lamp 600. The whole structure of the lighting fixture 1000 and straight tube | pipe LED lamp 600 which concern on this Embodiment 1 is demonstrated using FIGS. 1-3.

(Configuration of lighting apparatus 1000)
As shown in FIGS. 1 and 2, the lighting fixture 1000 includes a fixture body 100 and a reflector 200. The luminaire 1000 is attached with a straight tube LED lamp 600. The lighting apparatus 1000 includes a first socket 300 on the power supply side on one end side in the longitudinal direction of the apparatus main body 100, and has a function of only holding the end portion of the straight tube LED lamp 600 without supplying power to the other end side. A socket 400 is provided and a straight tube LED lamp 600 can be mounted. As shown in FIGS. 1 and 2, the first socket 300 and the second socket 400 are attached to the attachment surface 114 a (front surface) of the attachment plate 114 of the instrument body 100. The lighting fixture 1000 includes a lighting device (not shown) attached to the fixture body 100. This lighting device turns on the straight tube LED lamp 600 mounted on the first socket 300 and the second socket 400. The reflector 200 has a function of distributing light emitted from the straight tube LED lamp 600.

(Configuration of straight tube LED lamp 600)
The configuration of the straight tube LED lamp 600 will be described with reference to FIG. A straight tube LED lamp 600 shown in FIG. 3 is a straight tube lamp of a one-piece base energization method. The first base 621 (power supply side base) that is the power supply side includes a pair of L-shaped power supply pins 622. As shown in FIG. 3, the power supply pin 622 is connected to the LED element 625 inside the outer shell 627 and the electric wire 626. Here, the LED elements 625 are shown connected in series, but may be connected in parallel. Usually, it is configured to be connected in a so-called series-parallel combination of series and parallel. Further, the power supply pin 622 may be configured to be nonpolar by disposing a diode bridge (not shown) between the power supply pin 622 and the LED element 625. The first base 621 is attached to the first socket 300 on the power feeding side.

  As shown in FIG. 3, the second base 623 (holding side base) on the side that holds the straight tube LED lamp 600 includes a T-shaped holding pin 624. The holding pin 624 is used only for holding without being supplied with power. The front end portion of the holding pin 624 is provided with a flat plate-like protrusion 624a having an elliptical shape (long diameter B2, short diameter B1). The holding pin 624 is attached to the second socket 400 on the holding side, and holds the straight tube LED lamp 600.

(Configuration of the first socket 300)
FIG. 4 is a front perspective view of the first socket 300 to which the straight tube LED lamp 600 is mounted, and FIG. 5 is a rear perspective view of the first socket 300. The first socket 300 is a socket to which the first base 621 of the straight tube LED lamp 600 can be attached. The first socket 300 forms a substantially box formed by the main body 331 and the cover 332. The first socket 300 includes a “pair of conductive metal fittings” (not shown) inside the substantial box. The straight tube LED lamp 600 is connected to the lighting device via the pair of conductive fittings. In FIG. 4, the pair of power supply pins 622 of the first base 621 is inserted in the insertion hole 333 provided in a part of the outer periphery of the main body 331 of the first socket 300 from the direction of the arrow 335 in a state of being moved up and down in the X direction. Then, by rotating approximately 90 ° in the A direction or the B direction in FIG. 4, it is electrically connected to a “pair of conductive metal fittings” (not shown) provided on the surface side inside the main body 331, and the first socket 300.

(Configuration of second socket 400)
6 and 7 are perspective views of the second socket 400 in which the straight tube LED lamp 600 is mounted. FIG. 6 is a front perspective view of the second socket 400, and FIG. 7 is a rear perspective view of the second socket 400. FIG. 8 is an exploded perspective view of the second socket 400. FIG. 9 is a view of the holding spring 540 of FIG.

  The overall configuration of the second socket 400 according to the first embodiment will be described with reference to FIGS.

  The second socket 400 is a socket to which the straight tube LED lamp 600 of FIG. 3 is mounted, and has a function of holding a holding pin 624 for holding the straight tube LED lamp 600. As shown in FIG. 8, the second socket 400 includes a main body 440 (socket main body) and a holding spring 540. The holding spring 540 includes a pair of a holding spring 540-1 and a holding spring 540-2. The holding spring 540-1 includes a pin holding portion 541 and an elastic portion 542, and the pin holding portion 541 and the elastic portion 542 are integrally formed. The same applies to the holding spring 540-2.

  Hereinafter, in order to simplify the description, the side that contacts the second base 623 of the straight tube LED lamp 600 is defined as the front surface, the opposite side is defined as the back surface, and the surface that stands from the front surface to the back surface side of the main body 440 is defined as the side surface.

(Main body 400)
The main body 440 of the second socket 400 is integrally formed of an insulating material of thermoplastic resin, for example, polycarbonate or polybutylene terephthalate. As shown in FIG. 6, the main body 440 includes a front portion 451 that forms a front surface and a side surface portion 452 that forms a side surface around the front portion 451. An insertion hole 442 cut out in a substantially L shape is formed on the side surface portion 452 of 6). The holding pin 624 of the straight tube LED lamp 20 is inserted into the insertion hole 442. As shown in FIG. 7, the back surface of the main body 440 includes an opening 443 that opens in the direction of the mounting surface 114 a (FIGS. 1 and 2) of the mounting plate 114 of the instrument main body 100. As shown in FIG. 8, a pair of columnar protrusions 461 (FIG. 8) are formed inside the main body 440 so as to stand from the surface on the opening 443 side of the front portion 451 toward the opening 443. In addition, a pair of wall-shaped protrusions 462 are formed in the X direction of the pair of columnar protrusions 461. The pair of wall-shaped protrusions 462 are formed with concave portions 462a in which the pin holding portions 541 of the holding springs 540 are accommodated. Further, in the X direction of the pair of wall-shaped protrusions 462, a first attachment piece storage portion 463 that stores a first attachment piece 543 (described later) of the holding spring 540 is formed. A pair of slits 463 a for accommodating the first attachment pieces 543 of the pair of holding springs 540 are formed in the first attachment piece storage portion 463.

(Holding spring 540)
A pair of holding springs 540 are provided inside the opening 443 of the main body 440. The configuration of the holding spring 540 will be described with reference to FIGS. The holding spring 540 has a spring property (elasticity), and is configured by a plate spring formed of a metal that hardly rusts, for example, stainless steel. The holding spring 540 includes a pin holding portion 541 that holds the holding pin 624 and an elastic portion 542 having a leaf spring biasing portion that is formed so as to spread from the end of the pin holding portion 541 toward the mounting surface 114a. Is provided. As shown in FIG. 9, a first attachment piece 543 is formed at the end in the X direction of the pin holding portion 541. A second attachment piece 544 is formed at the end of the pin holding portion 541 in the anti-X direction.

(How to attach the holding spring 540 to the second socket 400)
A method for attaching the holding spring 540 to the second socket 400 will be described with reference to FIGS. In FIG. 8, the pin holding portions 541 of the pair of holding springs 540-1 and 540-2 are housed inside the main body 440 (anti-Y direction). At this time, as shown in FIG. 7, the second mounting piece 544 of the holding spring 540-1 is sandwiched between the left columnar projection 461 and the left wall projection 462, and the first mounting piece 543 is placed. Is stored in the slit 463a on the left side of the first mounting piece storage portion 463. The end portion in the X direction of the slit 463a is formed with a bottom portion 463b (FIG. 8), and the bottom portion 463b is configured to receive the first attachment piece end surface 543a (FIG. 9) of the first attachment piece 543. Further, the elastic part 542 has a leg through hole 542a that is a through hole at the tip of the elastic part 542, but the nail part formed at the tip of the guide part 445 of the main body 440 when the pin holding part 541 is housed inside the main body 440. 44 passes through the foot through hole 542a of the holding spring 540 and is fitted to the periphery of the foot through hole 542a (FIG. 7).

  In the first embodiment, the pair of holding springs 540 in which the pin holding portion 541 and the elastic portion 542 are integrally formed are illustrated. However, as shown in FIG. 10, the holding spring 540 is integrally formed into one component. You may comprise so that it may become. FIG. 10 shows a holding spring 540 in which the holding spring 540-1 and the holding spring 540-2 are integrally formed as a single component. (A) is a perspective view of the holding spring 540, (b) is an anti-Z direction arrow view of (a), (c) is a Y direction arrow view of (a), and (d) is (a) ) Is an arrow view in the Z direction, (e) is an arrow view in the anti-X direction in (a), and (f) is an arrow view in the anti-Y direction in (a). FIG. 10A is a perspective view corresponding to FIG. 9, and the holding springs 540-1 and 540-2 of FIG. 9 are connected by a connecting portion, and the holding spring 540-1 and the holding spring 540-2 are connected. It is the structure which united and made it a single part. According to the holding spring 540 of FIG. 10, the number of parts can be further reduced and the number of assembling steps can be further reduced as compared with the case of a pair.

(How to attach the holding pin 624 to the second socket 400)
Next, a method for attaching the holding pin 624 to the second socket 400 will be described. The insertion hole 42 in FIG. 6 is substantially the same as the elliptical shape of the distal end surface of the holding pin 624. Specifically, the width B3 of the insertion hole 442 shown in FIG. 6 is slightly larger than the elliptical minor axis B1 of the protrusion 624a shown in FIG. 3, and narrower than the major axis B2. That is, the holding pin 624 is formed so that it cannot be inserted unless it is inserted into the insertion hole 442 so that the elliptical shape (FIG. 3) of the distal end surface of the protrusion 624a matches the elliptical shape of the insertion hole 442. The holding pin 624 is attached to the second socket 400 by inserting it in the direction of the arrow 444 from the insertion hole 442 so that the elliptical major axis B2 direction of the protruding portion 624a is substantially the X direction in FIG. By rotating 90 degrees during attachment, the oval shape of the projecting portion 624a is rotated by rotating in the A direction or B direction of FIG. 6 (corresponding to the A and B directions of FIG. 04). Becomes substantially orthogonal to the X direction. At this time, since the dimension of the mounting width B4 between the pin holding portions 541 shown in FIG. 9 (after assembling the holding spring 540 to the main body 440) is formed slightly narrower than the dimension of the long diameter B2, a pair of holding springs The protruding portion 624a of the holding pin 624 can be held between the pin holding portions 541 of 540-1 and 540-2. Further, the insertion hole 442 is formed in a size that prevents the pair of power supply pins 622 from being inserted. As a result, the pair of power supply pins 622 cannot be erroneously inserted into the insertion hole 42 of the second socket 400, and safety is improved. On the other hand, the holding pin 624 cannot be erroneously inserted into the insertion hole of the first socket 300, and safety is improved.

  As shown in FIGS. 6-8, in order to attach the 2nd socket 400 to the attachment surface 114a of the instrument main body 100, the side surface of the main body 440 is equipped with a pair of guide part 445 which protruded from the side surface to the back side. The guide portion 445 is a rod-shaped guide portion that protrudes from the side surface to the back surface side, and is inserted into an attachment hole 115 (see FIG. 10) formed in the attachment surface 114a, and the second socket 400 (main body 440) is inserted in the front-rear direction. To guide. At the tip of the guide portion 445, a claw portion 446 that is hooked on the periphery of the mounting hole 115 on the back surface 114b side (FIG. 10) of the mounting plate 114 is provided so that the guide portion 445 does not come out of the mounting hole 115.

  FIG. 11 is a diagram illustrating an attachment method for attaching the second socket 400 according to the first embodiment to the attachment surface 114a of the attachment plate 114 of the instrument main body 100. FIG. 11A shows the attachment of the second socket 400 to the attachment surface 114a. It is a figure which shows a previous state, (b) is a figure which shows the state which attached the 2nd socket 400 to the attachment surface 114a.

  As shown in FIG. 11A, the mounting plate 114 of the instrument body 100 has mounting holes 115 penetrating from the mounting surface 114 a of the mounting plate 114 to the back surface 114 b at positions corresponding to the pair of guide portions 445. It is formed. An operator who attaches the second socket 400 pinches the guide portion 445 with a finger or the like, and inserts the guide portion 445 into the attachment hole 115 while applying an internal force to the guide portion 445.

  As shown in FIG. 11 (b), when the operator penetrates the claw portion 446 at the distal end portion of the guide portion 445 through the mounting hole 115 of the instrument body 100 and releases the finger, the guide portion 445 also spreads outward. It is fixed in a state where a force to return to the position (shape) is applied. As a result, the claw portion 446 is firmly hooked to the peripheral edge of the mounting hole 115 on the back surface 114b side, and the guide portion 445 is prevented from coming out of the mounting hole 115.

  11B, the main body 440 of the second socket 400 is given a force to release the main body 440 from the mounting surface 114a by the holding spring 540, and the claw portion 446 has the mounting hole 115. Is positioned at a predetermined position (position shown in FIG. 11B). That is, the claw portion 446 passes through the attachment hole 115 when the guide portion 445 is inserted into the attachment hole 115, and moves in the direction of the attachment surface 114 a from the back surface 114 b of the guide portion 445. It has a function of stopping by being caught on the periphery. In this case, the elastic portions 542 of the pair of holding springs 540 come into contact with the attachment surface 114a of the attachment plate 114 and elastically deform when the guide portion 545 is inserted into the attachment hole 115, whereby the claw portion 446 becomes the back surface 114b. An elastic force is applied to move the guide portion 445 from the back surface 114b toward the mounting surface 114a in a state where the guide portion 445 is hooked on the periphery of the mounting hole 115. Thus, the second socket 400 (main body 440) is positioned at the predetermined position.

  As shown in FIG. 11B, in a state where the second socket 400 (main body 440) is positioned at the predetermined position, the elastic portion 542 has a room for further elastic deformation of about ΔB between the mounting surface 114a. is there. That is, the elastic portion 542 is elastically deformed while increasing the elastic force when the guide portion 445 is moved from the mounting surface 114a to the back surface 114b in a state where the claw portion 446 is hooked on the peripheral edge of the mounting hole 115 of the back surface 114b. Thus, the movement of the guide portion 445 can be absorbed to about ΔB. The amount up to ΔB corresponds to the amount of absorption of the variation in the lamp length of the straight tube LED lamp 600.

According to the first embodiment, since it can be configured without providing a conventional cover on the back side of the main body 440 of the second socket 400, parts corresponding to that are provided rather than the case where a conventional cover is provided. The cost can be reduced by reducing the number and the number of processes.
In addition, conventionally, the pin holding portion for holding the holding pin and the holding spring for attaching the socket storing the pin holding portion to the instrument main body are configured separately, but according to the first embodiment, Since the pin holding portion 541 for holding the holding pin 624 and the elastic portion 542 for attaching the second socket 400 for storing the pin holding portion 541 to the instrument main body 100 are formed by a holding spring 540 formed integrally. Compared to the conventional separate configuration, the number of parts and the number of processes can be reduced, and a low-cost socket can be provided.
In addition, by using the second socket 400 of the present embodiment for a lighting fixture, it is possible to provide a lighting fixture with low cost.

  1000 lighting fixture, 100 fixture body, 114a mounting surface, 114b back surface, 114 mounting plate, 114a mounting surface, 114b back surface, 115 mounting hole, 200 reflector, 300 first socket, 331 main body, 332 cover, 333 insertion hole, 400 Second socket, 440 Main body, 442 Insertion hole, 443 Opening portion, 445 Guide portion, 446 Claw portion, 451 Front portion, 452 Side portion, 461 Columnar protrusion, 462 Wall-shaped protrusion, 463 First mounting piece storage portion, 463a slit, 463b bottom, 540-1, 540-2 holding spring, 541 pin holding part, 542 elastic part, 542a foot through hole, 543 first attachment piece, 543a first attachment piece end face, 544 second attachment piece, 600 Straight tube LED lamp, 621 first base, 622 power supply pin, 623 second base 624 retaining pin, 625 LED elements, 626 wire, 627 shell.

Claims (5)

One end of a one-sided base energization system comprising a feeding side base having a feeding pin that receives power feeding, and the other end having a holding side base having a holding pin that is used only for holding without being fed. In the holding socket for holding the holding pin of the holding side base of the straight tube lamp,
A guide portion that is inserted from the front surface into a mounting hole that penetrates from the front surface to the back surface of the mounting plate; and provided at a tip of the guide portion, and the guide portion is inserted into the mounting hole. A socket body having a claw portion that passes through the mounting hole and stops the movement of the guide portion in the direction of the front surface from the back surface by being caught on the periphery of the mounting hole on the back surface;
A pin holding part that is disposed inside the socket body and holds the holding pin; and a pair of holding springs having an elastic part formed integrally with the pin holding part,
Each elastic part of the pair of holding springs is
When the guide portion is inserted into the attachment hole, the claw portion is caught on the periphery of the attachment hole on the back surface by elastically deforming by contacting the front surface of the attachment plate. A holding socket, wherein an elastic force is applied to move the guide portion from the back surface toward the front surface. Each elastic part of the pair of holding springs is
When the guide portion is moved from the front surface to the back surface in a state where the claw portion is hooked on the periphery of the mounting hole on the back surface, the claw portion is elastically deformed while increasing an elastic force. The holding socket according to claim 1. The pair of holding springs are:
The holding socket according to claim 1, wherein the holding socket is integrally formed as a single component. The socket body is
4. The holding socket according to claim 1, wherein the holding socket is integrally formed as a single component. A single-tube energization type straight pipe having a power supply side base having a power supply pin that receives power at one end and a holding side base having a holding pin that is used only for holding without power being supplied to the other end In the luminaire where the lamp is mounted,
A first socket for mounting the power supply pin of the power supply side base;
A second socket for mounting the holding pin of the holding side cap;
A lighting fixture comprising the holding socket according to claim 1 as the second socket.

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