JPH04127994U - light bulb socket - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a light bulb socket that achieves miniaturization by reducing the size of the flange that is provided on the socket body and constitutes a socket mounting part. [Structure] A socket body 1 constituted by a cylindrical body with a cross-sectional shape having a major axis and a minor axis, a contact 2 housed in this socket body 1, and a mounting hole 51 provided in a lamp 5 etc. with the socket body 1. The socket mounting portion includes a flange 11 formed to have a diameter approximately equal to the major axis of the socket body, an annular gasket 12 supported by the flange 11, and a socket mounting portion for fitting and mounting. It is composed of a flange 11 and a fitting recess 13 formed by cutting out both sides of the long diameter side of the socket body 1 adjacent in the cylinder axis direction, and the lamp 5 etc. to hold.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to light bulb sockets, and is particularly applicable to wedge-based light bulb sockets. Concerning a suitable light bulb socket.

0002

[Conventional technology]

Conventionally, the socket shown in Figure 4 is used as a light bulb socket for wedge-based light bulbs. is provided. In the same figure, the socket body 1A is an elongated cylindrical body. The distal end 1Aa has a cross-sectional shape with both sides cut off and is wetted. The base portion 31 of the base type light bulb 3 is inserted. Also, there is gold inside this tip 1Aa. A light bulb 3 with a contact 2 made of metal material inside and inserted into a socket body 1A It is electrically connected to a lead wire (not shown) provided on the base portion 31 of. This contact A cord 22 is connected to the socket 2, and is led out from the other end of the socket body 1A. It is waterproofed with bushing 4.

0003 On the other hand, in order to attach the light bulb socket to a lamp etc., the base end 1 of the socket body 1A is A circular flange 11A is provided on a part of the Ab side, and an annular gasket 12A is attached here. I support it. Also, the outer periphery of the socket body a small dimension away from this flange 11A. Fitting protrusions 13A are provided on the surface at multiple locations (four locations in this case) around the circumference. stop The flange 11A, gasket 12A, and fitting protrusion 13A form a bayonet. It constitutes the socket mounting part of the structure, and is opened in the lamp body 5 as shown in Figures 5 and 6. After inserting the socket body into the mounting hole 51A from the tip side and inserting the fitting protrusion, By rotating the socket body by a small angle, the flange and gasket can be aligned with the mating protrusion. The tool body is sandwiched between the two and the light bulb socket is attached to the light fixture. It is being

0004

[Problem that the idea aims to solve]

In order to attach such a conventional light bulb socket to a lamp, it must be installed as shown in Figure 6. There are fitting protrusions in a circular shape approximately equal to the outer diameter of the socket body 1A and at four locations on its circumference. It is necessary to open a mounting hole 51A having a notch 51a through which it is inserted. This prevents external moisture from entering the lamp through this mounting hole 51A. In order to prevent this from happening, set the diameter of the waterproof gasket 12A to the maximum outer diameter of the mounting hole 51A. From the dimensions, that is, the outer diameter dimension of the fitting protrusion 13A formed on the outer peripheral surface of the socket body 1A It is also necessary to increase the size of the flange 1 that supports the gasket 12A. It is necessary to further increase the diameter of 1A. For this reason, the diameter dimension of flange 11A The shape of the light bulb socket determined by the size has become larger, making it difficult to downsize the light bulb socket. There is a problem. In addition, for lamps that have a reflective surface on the inner surface of the lamp body, The larger the attachment hole, the smaller the area of the reflective surface, which tends to deteriorate the light distribution characteristics of the lamp. There are also problems. The purpose of this invention is to provide a light bulb socket that is more compact by reducing the size of the flange. It's about doing.

[0005]

[Means to solve the problem]

The light bulb socket of the present invention is composed of a cylindrical body with a cross-sectional shape having a major axis and a minor axis. The socket body, the contacts built into this socket body, and the socket body. Equipped with a socket mounting part for fitting into a mounting hole provided on a light fixture, etc. The socket mounting part has a flange formed with a diameter approximately equal to the long axis of the socket body. the annular gasket supported by the flange, and the flange adjacent to the flange in the cylinder axis direction. It consists of a fitting recess formed by cutting out both sides of the long diameter side of the contacting socket body. Ru.

[0006]

[Effect]

According to the present invention, the inner edge of the fitting recess provided in the long diameter part of the socket body and the flange Light bulb sockets can be installed by holding the light fixture, etc. between the flange. The diameter of the screw can be reduced, and the area of the mounting hole can be reduced.

[0007]

【Example】 Next, the present invention will be explained with reference to the drawings. Figure 1 shows a perspective view of one embodiment of the present invention. The perspective view and FIG. 2 are longitudinal cross-sectional views of the lamp attached to the lamp. In these diagrams, The container body 1 has a cross-sectional shape close to a rectangle with both sides of a circle cut off, and has a major axis and a minor axis. It is composed of an elongated cylindrical body having a wedge base type light bulb 3 at its tip 1a. The base portion 31 can be fitted. Also, the inside of the tip 1a of the socket body 1 Two or more contacts 2 formed by processing a metal plate are arranged in the part, and the contacts 2 are inserted into the contact the lead wire (not shown) provided on the base part 31 of the light bulb 3 that has been Continuation can be carried out. These contacts 2 have cut and raised pieces 21 inside the socket body 1. It is locked in the socket main body 1 by being locked in a locking part 14 formed on the surface, A cord 22 is connected to each contact 2, and a cord 22 is connected to the base end 1b side of the socket body 1. is derived externally from 4 is the base end 1b of the socket body through which this cord is inserted. This is a bushing that is press-fitted to make it waterproof.

[0008] On the other hand, a circular flange 11 is provided on a portion of the base end 1b side of the socket body 1. It is formed on the socket body, and its diameter is approximately equal to the long axis of the socket body 1. In the embodiment, the diameter is slightly larger than the major axis. This flange 11 has An annular gasket 12 is supported, and this gasket 12 is also attached to the socket body. The diameter dimension is approximately equal to the major axis of 1. Also, in the axial direction with this flange 11 Both sides of the long diameter side of the adjacent socket bodies 1 are cylindrical walls extending by a predetermined dimension in the axial direction. is cut out, and this portion is formed as a fitting recess 13. And these The flange 11, gasket 12, and fitting recess 13 constitute a socket mounting part. It will be done.

[0009] Therefore, according to this configuration, the lamp body 5 has a socket as shown in FIG. A shape that corresponds to the cross-sectional shape of the main body 1 and that allows the socket main body 1 to be inserted from the tip 1a side. A mounting hole 51 is opened. Then, insert the socket body 1 into the mounting hole 51 at the tip end 1. The gasket 12 inserted from the a side and supported by the flange 11 is attached to the lamp body 5. The light bulb socket 1 is rotated 90 degrees around the axis at the position of collision. to this Therefore, the fitting recess 13 of the socket body 1 is located in the mounting hole 51 as shown by the chain line in the figure. Since it is rotated at the short diameter point, the inner edge of the fitting recess 13 on the tip 1a side and the flange The lamp body 5 is held between the gasket 11 and the gasket 12, so that the electric power is A bulb socket will be attached to the lamp. At this time, the elastic force of the gasket 12 A clamping force is applied between the flange 11 and the inner edge of the fitting recess 13 by is the same as a conventional light bulb socket with a mating protrusion.

0010 Therefore, a gasket 12 for preventing moisture from entering through the mounting hole 51, The outer diameter of each flange 11 for supporting this is set to the major axis of the socket body 1. Even if the dimensions are approximately equal, the gasket 13 is tightly attached to the lamp body 5 around the mounting hole 51. The flange 11 is based on this gasket 12. Sufficient mounting strength can be obtained by supporting from the end side. This allows you to The size of the light bulb socket determined by the diameter of the flange 11 can be reduced, and at the same time Since the area of the mounting hole 51 opened in the lamp body 5 is also reduced, the area of the installation hole 51 formed in the lamp body 5 is also reduced. It is also possible to prevent deterioration of light distribution characteristics in a lamp whose inner surface is a reflective surface.

[0011]

[Effect of the idea]

As explained above, the present invention improves the inner edge of the fitting recess provided in the long diameter part of the socket body. It is configured so that a light fixture, etc. is held between the socket and the flange provided on the socket body. Therefore, the diameter of the flange and the gasket supported by it should be adjusted to the diameter of the socket body. It is possible to obtain sufficient waterproofing effect and mounting strength even if it is approximately equal to the light bulb socket. can be made smaller. Also, a mounting hole is provided on the light fixture side to attach the socket. It is also possible to reduce the area of the lamp and improve the light distribution characteristics of the lamp.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the light bulb socket of the present invention.

FIG. 2 is a sectional view of the light bulb socket of FIG. 1 in an attached state.

FIG. 3 is a front view of a portion of the lamp body in which a mounting hole for the light bulb socket of FIG. 1 is provided.

FIG. 4 is a perspective view of an example of a conventional light bulb socket.

FIG. 5 is a sectional view of the light bulb socket of FIG. 4 in an attached state.

6 is a front view of a part of the lamp body provided with a mounting hole for the light bulb socket of FIG. 4; FIG.

[Explanation of symbols]

1 Socket body 2 Contact 3 Wedge base light bulb 11 Flange 12 Gasket 13 Fitting recess

Claims (1)

[Scope of utility model registration request] Claims: 1. A socket body comprising a cylindrical body with a cross-sectional shape having a major axis and a minor axis, into which a base portion of a wedge-based light bulb is inserted; a contact that is electrically connected to a lead wire, and a socket mounting portion for fitting and mounting the socket body into a mounting hole provided in a light fixture, etc., and the socket mounting portion has a long diameter dimension that is approximately equal to the length dimension of the socket body. Consisting of a flange formed to a diameter dimension, an annular gasket supported by the flange, and a fitting recess formed by cutting out both sides of the long diameter side of the socket body adjacent to the flange in the axial direction of the cylinder. A light bulb socket featuring