JP2016054061A - Lamp socket and lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp socket which eliminates directivity when a straight pipe LED lamp is attached to improve the workability and achieves reduction of component costs and management costs, and to provide a lighting device.SOLUTION: A straight pipe LED lamp 20 including a power supply side mouth piece 21 having power supply pins 25 and a ground side mouth piece 22 having a ground pin 27 is attached to a lamp socket 30. The lamp socket 30 includes: a body 31; a cover 32 attached to the body 31; a rotor 34 rotatably attached to the body 31 and holding the power supply pins 25; and a holding rib 36 holding the ground pin 27.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lamp socket for fixing a straight tube lamp to a ceiling or the like and a lighting fixture including the lamp socket.

  As a straight tube lamp used for ceiling lighting or the like, a straight tube LED lamp using an LED (Light Emitting Diode) as a light source is known. Some straight tube LED lamps have a GX16t-5 base dedicated to LED lamps that conforms to the standard “JEL801” established by the Japan Light Bulb Industry Association. For example, as described in Patent Document 1 or Patent Document 2, the GX16t-5 base is a power supply side base including two power supply pins, and the other is a single grounding having a shape different from that of the power supply pins. It is a ground side cap with pins. The straight tube LED lamp is fixed by two types of sockets, a power supply side socket to which the power supply side base is attached and a ground side socket to which the ground side base is attached.

JP 2013-69421 A (see FIG. 1) JP 2013-69435 A (see FIG. 4)

  Conventionally, a ground side socket mounted on a ground side base of a straight tube LED lamp has a ground mechanism for connecting a ground pin to the ground. However, in recent years, the JIS standard (JIS C 8159-1) regarding a straight tube LED lamp with a GX16t-5 base has been established, and the ground connection of the ground pin is not required in the JIS standard.

  In addition, as described above, in the GX16t-5 base, the number and shape of the pins are different between the power supply side and the ground side, so two types of sockets corresponding to each of them are necessary to fix the lamp. For this reason, the number of parts increases, and a management process such as part selection is required. In addition, there is a possibility that an attachment error occurs in the assembly work process. Furthermore, since it is necessary to attach a power supply side socket corresponding to the power supply side base and a ground side socket corresponding to the ground side base, and directivity is generated when the straight LED lamp is attached, workability is also poor.

  The present invention is for solving the above-mentioned problems, and it is possible to improve the workability by eliminating the directionality when attaching the straight tube LED lamp, and to reduce the component cost and the management cost. An object of the present invention is to provide a simple lamp socket and lighting fixture.

  A lamp socket according to the present invention is a lamp socket to which a straight tube LED lamp having a power supply side base having a power supply pin and a holding side base having a holding pin is mounted. The main body, a cover attached to the main body, a main body And a rotor that holds the power supply pin and a holding portion that holds the holding pin.

  According to the lamp socket of the present invention, since the power supply side base and the grounding (holding) side base can be mounted in common, there is no directionality when attaching the lamp, and workability is improved. In addition, by sharing the lamp socket, the ground side socket, which has been conventionally required, is no longer necessary, and it is possible to reduce the part cost and the management cost such as part selection.

It is a perspective view of the lighting fixture in embodiment of this invention. It is a figure which shows an example of the straight tube | pipe LED lamp in embodiment of this invention, (a) is the whole figure of a straight tube | pipe LED lamp, (b) is an enlarged view of a electric power feeding side nozzle | cap | die, (c) is an earthing | grounding side nozzle | cap | die. It is an enlarged view. It is a figure which shows the lamp socket in embodiment of this invention, (a) is a front perspective view, (b) is a back perspective view, (c) is a disassembled perspective view. It is a figure which shows the contact state of the lamp socket and electric power feeding pin in embodiment of this invention. It is a figure explaining the rib for holding | maintenance of the lamp socket in embodiment of this invention, (a) shows the relationship between a holding rib and a feed pin, (b) shows the relationship between a holding rib and a ground pin. It is. It is a figure which shows the holding | maintenance state of the electric power feeding pin in embodiment of this invention, (a) is the state which inserted the straight tube | pipe LED lamp in the lamp socket (0 degree), (b) is the state which inserted the straight tube | pipe LED lamp. It is a figure which shows the state rotated 90 degrees from. It is a figure which shows the holding | maintenance state of the ground pin in embodiment of this invention, (a) is the state which inserted straight tube | pipe LED lamp in the lamp socket (0 degree), (b) is the state which inserted straight tube | pipe LED lamp It is a figure which shows the state rotated 90 degrees from.

  Hereinafter, embodiments of a lamp socket and a lighting fixture according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a lighting fixture 10 according to an embodiment of the present invention. As shown in FIG. 1, the lighting fixture 10 includes a fixture body 11 and a reflector 12. The lamp sockets 30 having the same specifications are provided at both ends in the longitudinal direction of the appliance main body 11, and the straight tube LED lamp 20 is detachably mounted on the lamp socket 30. The reflector 12 has a function of distributing light emitted from the straight tube LED lamp 20. The lighting fixture 10 is further provided with a power supply device (not shown) that is attached to the fixture main body 11 and supplies power for lighting the straight tube LED lamp 20.

  FIG. 2 is a diagram illustrating an example of the straight tube LED lamp 20 in the present embodiment. 2A is an overall view of the straight tube LED lamp 20, FIG. 2B is an enlarged view of the power supply base 21, and FIG. 2C is an enlarged view of the grounding base 22. As shown in FIG. 2A, the straight tube LED lamp 20 includes an outer shell 23, and a power supply side base 21 and a ground side base 22 provided at both ends of the outer shell 23. The outer shell 23 includes an LED module serving as a light source inside, and is configured to transmit the light.

  The power supply side base 21 and the ground side base 22 of the present embodiment are GX16t-5 bases compliant with JEL801 standard or JIS standard (JIS C 7709: 2013). Specifically, as shown in FIG. 2B, the power supply base 21 has a pair (two) of L-shaped power supply pins 25. The power supply pin 25 includes a power supply pin shaft portion 25a extending in the axial direction from the power supply side contact portion 24 of the power supply side base 21 and a power supply pin retaining portion 25b extending outward from the tip of the power supply pin shaft portion 25a. In addition, as shown in FIG. 2C, the ground side base 22 has one ground pin 27. The ground pin 27 includes a ground pin shaft portion 27a extending in the axial direction from the ground side contact portion 26 of the ground side base 22 and an elliptical ground pin tip portion 27b formed at the tip of the ground pin shaft portion 27a. . The ground side base 22 corresponds to the holding side base of the present invention, and the ground pin 27 corresponds to the holding pin of the present invention.

  3A and 3B are diagrams showing the lamp socket 30 according to the present embodiment, in which FIG. 3A is a front perspective view of the lamp socket 30, FIG. 3B is a rear perspective view, and FIG. 3C is an exploded perspective view. In the lamp socket 30 of the present embodiment, both the power supply side base 21 and the ground side base 22 can be mounted. As shown in FIGS. 3A to 3C, the lamp socket 30 has a substantially box body having an arcuate upper surface, and a main body 31 to which the power supply side base 21 and the ground side base 22 are attached, and a rear surface thereof. It is comprised with the cover 32 which covers the side. In addition, a pair of conductive contact pieces 33 and a rotor 34 are disposed between the main body 31 and the cover 32.

  The main body 31 is formed of a thermoplastic resin such as polycarbonate. As shown in FIG. 3C, the main body 31 has a surface 31a with which the power supply base 21 and the grounding base 22 abut when the straight LED lamp 20 is mounted. A substantially circular opening 37 is formed in the surface 31a. The cover 32 is formed of a thermoplastic resin such as polycarbonate, like the main body 31, and is attached to the main body 31 by, for example, an engaging claw and an engaging hole. On the inner surface of the cover 32, a pair of holding ribs 36 disposed to face each other via a gap 39 and a plurality of click feeling ribs 38 arranged in a circle via a gap 38 a are provided. In the present embodiment, four click feeling ribs 38 are provided through gaps 38a provided at 0 °, 90 °, 180 °, and 270 °. The holding rib 36 and the click feeling rib 38 are formed of the same thermoplastic resin as the cover 32 such as polycarbonate. Details of the holding rib 36 will be described later.

  The conductive contact piece 33 is formed of a conductive material such as phosphor bronze, for example. The conductive contact piece 33 is disposed on the outside of the holding rib 36 so as to face the opening 37 of the main body 31. The conductive contact piece 33 is electrically connected to a power supply device (not shown). The rotor 34 has a substantially cylindrical shape and is formed of a thermoplastic resin such as polycarbonate. The rotor 34 is rotatably attached to the inner surface of the opening 37 of the main body 31. Moreover, the rotor 34 has a rectangular parallelepiped pin insertion portion 35 formed so as to penetrate in the diameter direction. Furthermore, a protrusion (not shown) is provided on the inner peripheral surface of the rotor 34 to cause a click feeling by fitting into the gap 38 a of the click feeling rib 38.

  FIG. 4 is a diagram showing a contact state between the lamp socket 30 and the power feed pin 25 in the present embodiment. As shown in FIG. 4, when the straight tube LED lamp 20 is correctly attached to the lamp socket 30, the pair of power supply pins 25 come into contact with the pair of conductive contact pieces 33, respectively. As a result, power is supplied to the power supply pin 25 from the power supply device (not shown) through the conductive contact piece 33, and the straight tube LED lamp 20 is lit.

  FIGS. 5A and 5B are diagrams for explaining the holding rib 36 of the lamp socket 30 according to the present embodiment. FIG. 5A shows the relationship between the holding rib 36 and the power feed pin 25, and FIG. 5B shows the holding rib 36. It is a figure which shows the relationship between and the ground pin 27. FIG. 5A and 5B are front (inner surface) views of the cover 32 in a state where the power supply pin 25 and the ground pin 27 are inserted into the lamp socket 30. FIG. As shown in FIG. 3 and FIGS. 5A and 5B, each of the pair of holding ribs 36 has a substantially U-shaped cross section and is formed to project from the inner surface of the cover 32 toward the main body 31 side. The A parallel holding surface 36 a that holds the ground pin 27 is formed at the center of the holding rib 36. A space SP for holding the ground pin 27 is formed near the center of the rotor 34 by the pair of holding ribs 36.

  The gaps 39 between the pair of holding ribs 36 are set to have different widths w3, w4, and w5. The width w3 is the distance between the downstream ends of the holding ribs 36 in the direction in which the power supply pin 25 and the ground pin 27 are inserted into the lamp socket 30 (the direction indicated by the arrow A in FIGS. 5A and 5B). The width w4 is the distance between the upstream ends of the holding ribs 36 in the insertion direction of the power supply pin 25 and the ground pin 27. The width w5 is an interval between the holding surfaces 36a of the holding ribs 36.

  As shown in FIGS. 5A and 5B, the width of the power feed pin 25 is w1, and the width of the short side (the lateral width when the ground pin 27 is inserted) of the ground pin 27 is w2. First, if the width w3 of the gap 39 is smaller than the width w1 of the power supply pin 25, when the power supply pin 25 is inserted into the lamp socket 30, the power supply pin 25 causes the gap 39 between the holding ribs 36 to be removed. The power supply side base 21 cannot be attached to the lamp socket 30 because it cannot pass through. If the width w3 of the gap 39 is larger than the width w2 of the ground pin 27, when the ground pin 27 is inserted into the lamp socket 30, the ground pin 27 passes through the gap 39 of the holding rib 36, and the ground pin 27 cannot be held and fixed in the holding rib 36. Therefore, the width w3 of the gap 39 is set to be not less than the width w1 of the power supply pin 25 and not more than the width w2 of the short side of the ground pin 27.

  As a specific example, the width w1 of the power supply pin 25 is defined as 3.8 to 4.2 mm according to the JEL standard or the JIS standard. Further, the width w2 of the ground pin 27 is similarly defined as 4.6 to 5.0 mm according to the JEL standard or the JIS standard. Accordingly, the width w3 of the gap 39 of the holding rib 36 is set to 4.2 to 4.6 mm. As a result, the power supply pin 25 does not interfere with the holding rib 36, and the power supply side cap 21 can be smoothly attached to the lamp socket 30. Further, when the ground-side base 22 is attached to the lamp socket 30, the position of the ground pin 27 is fixed by the ground pin 27 interfering with the holding rib 36.

  Further, the width w4 of the gap 39 is set larger than the width w1 of the power supply pin 25 and the width w2 of the short side of the ground pin 27. Thereby, the power feeding pin 25 and the ground pin 27 are smoothly inserted. The width w5 between the holding surfaces 36a is set to be approximately equal to the width of the long side (the vertical length when the ground pin 27 is inserted) of the ground pin 27 in the ground pin 27. Thus, when the ground pin 27 rotates, the ground pin 27 can be held between the holding ribs 36.

  Next, the holding state of the power supply pin 25 and the ground pin 27 in the lamp socket 30 will be described with reference to FIGS. 6 and 7. 6 and 7 are longitudinal sectional views of the lamp socket 30 in a state where the power supply side base 21 and the ground side base 22 are mounted on the lamp socket 30, respectively. First, FIG. 6 is a diagram showing a holding state of the power supply pin 25, (a) is a state where the straight tube LED lamp 20 is inserted into the lamp socket 30 (0 °), and (b) is a state where the straight tube LED lamp 20 is inserted. It is a figure which shows the state rotated 90 degree | times from the state which carried out. As shown in FIG. 6A, first, the power supply pin 25 is inserted into the pin insertion portion 35 of the rotor 34. At this time, one power supply pin 25 is inserted into the pin insertion portion 35 through the gap 39 of the holding rib 36.

  When the straight tube LED lamp 20 is rotated in the state shown in FIG. 6A, the rotor 34 rotates as the straight tube LED lamp 20 rotates. When the straight tube LED lamp 20 and the rotor 34 are rotated 90 degrees from the inserted state, the power supply pin 25 and the conductive contact piece 33 come into contact with each other. Thereby, the straight tube LED lamp 20 is energized. Further, when the straight tube LED lamp 20 is rotated by 90 °, a protrusion (not shown) provided on the inner peripheral surface of the rotor 34 is fitted into the gap 38a of the click feeling rib 38 to generate a click feeling. . As a result, the operator can recognize that the straight tube LED lamp 20 has been correctly attached to the lamp socket 30.

  Next, FIG. 7 is a diagram showing a holding state of the ground pin 27, where (a) shows a state where the straight tube LED lamp 20 is inserted into the lamp socket 30 (0 °), and (b) shows a state where the straight tube LED lamp 20 is inserted. It is a figure which shows the state rotated 90 degrees from the inserted state. As shown in FIG. 7A, first, the ground pin 27 is inserted into the pin insertion portion 35 of the rotor 34. At this time, the ground pin 27 passes through the upstream end of the holding rib 36 in the insertion direction of the power supply pin 25 and the ground pin 27 and contacts the downstream end. As a result, the ground pin 27 is held near the center of the rotor 34.

  When the straight tube LED lamp 20 is rotated in the state shown in FIG. 7A, the rotor 34 does not rotate as it is, and the ground pin 27 rotates in the holding rib 36. When the straight LED lamp 20 is rotated by 90 ° from the inserted state, the ground pin 27 is held by the holding surface 36a of the holding rib 36 as shown in FIG. Since the conductive contact piece 33 is outside the holding rib 36, it does not contact the conductive contact piece 33 even if the ground pin 27 rotates. Therefore, the conductive contact piece 33 is not deformed by the ground pin 27.

  As described above, in this embodiment, regardless of whether the power supply pin 25 or the ground pin 27 is inserted into the lamp socket 30, the power supply pin 25 is held by the rotor 34 and the ground pin 27 is held by the holding rib 36. can do. Thereby, since the lamp socket 30 can be shared, the wiring work to the lamp socket 30 is also unified, and it becomes possible to reduce the occurrence of work mistakes. Also, by sharing parts, the number of parts and part cost can be reduced. Further, in the manufacturing process, a socket selection process, a management process, and the like are not necessary, and it is possible to prevent a socket attachment error and the like. Therefore, it is possible to reduce the manufacturing cost, and the lighting fixture 10 can be manufactured at low cost.

  Further, by connecting both of the conductive contact pieces 33 of the lamp socket 30 attached to both ends of the straight tube LED lamp 20 to a power supply device (not shown), the power supply side cap 21 is attached to either of the lamp sockets 30 on both ends. However, the straight tube LED lamp 20 can be turned on. Therefore, the mounting directionality is lost during the mounting operation, and the workability is improved.

  Furthermore, when the ground pin 27 is inserted into the conventional ground side socket, the ground pin 27 is held by a contact piece or the like, but is not in the proper mounting position (90 °) due to insufficient rotation of the straight tube LED lamp 20 or the like. The ground pin 27 is easy to rotate due to the stress from the contact piece or the like, and the straight tube LED lamp 20 may be rotated and fall. On the other hand, in the present embodiment, holding the ground pin 27 by the holding rib 36 can suppress the fall and prevent the play due to vibration or the like.

  The above is the description of the embodiment of the present invention. However, the present invention is not limited to the configuration of the above-described embodiment, and various modifications or combinations are possible within the scope of the technical idea. . For example, in the above embodiment, the holding rib 36 is provided inside the click feeling rib 38 of the cover 32, but may be provided on the rotor 34 or the main body 31. Further, in order to hold the ground pin 27, a separate contact piece may be provided. For example, a contact piece dedicated to holding the ground pin may be provided inside the lamp socket 30 in addition to the conductive contact piece 33. However, in this case, the contact piece for holding the ground pin needs to be provided so as not to disturb the insertion operation of the power supply pin 25 into the lamp socket 30 and the rotation operation of the power supply pin 25.

  In the above embodiment, the holding rib 36 is made of a thermoplastic resin, but is not limited to this, and can be formed of an elastic member such as a leaf spring. Furthermore, although the lamp socket for one lamp has been described in the above embodiment, the present invention can be applied to lamp sockets for two or more lamps.

  DESCRIPTION OF SYMBOLS 10 Lighting fixture, 11 Appliance main body, 12 Reflector plate, 20 Straight tube LED lamp, 21 Power supply side base, 22 Ground side base, 23 Outer, 24 Power supply side contact part, 25 Power supply pin, 25a Power supply pin axial part, 25b Power supply Pin retaining portion, 26 Ground side contact portion, 27 Ground pin, 27a Ground pin shaft portion, 27b Ground pin tip, 30 Lamp socket, 31 Main body, 31a surface, 32 Cover, 33 Conductive contact piece, 34 Rotor, 35 pin insertion part, 36 holding rib, 36a holding surface, 37 opening, 38 click feeling rib, 38a, 39 clearance, SP space.

Claims (7)

A lamp socket to which a straight tube LED lamp having a power supply side base having a power supply pin and a holding side base having a holding pin is mounted,
The body,
A cover attached to the body;
A rotor rotatably attached to the main body and holding the power supply pin;
A lamp socket, comprising: a holding portion that holds the holding pin. The holding portion is composed of a pair of ribs arranged to face each other through a gap,
2. The lamp socket according to claim 1, wherein the power supply pin passes between the pair of ribs and the holding pin is held between the pair of ribs by the gap.   The lamp socket according to claim 2, wherein a holding surface that holds the holding pin is formed on an inner surface of each of the pair of ribs. Further comprising a pair of conductive contact pieces that conduct with the power supply pin,
The lamp holder according to any one of claims 1 to 3, wherein the holding portion is disposed inside the pair of conductive contact pieces.   The lamp holder according to claim 1, wherein the holding portion is provided on the cover.   The lamp socket according to any one of claims 1 to 5, wherein the power supply base and the holding side base are GX16t-5 bases conforming to the JISC7709: 2013 standard. The lamp socket according to any one of claims 1 to 6,
An instrument body to which the lamp socket is attached;
The straight tube LED lamp comprising the power supply side base and the holding side base;
And a power supply device for supplying power to the straight tube LED lamp.

Images