JPH11273815A - Fluorescent lamp socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably bring a conductive piece of a socket into contact with a lamp pin. SOLUTION: For a socket, in which a receiving plate 20 provided with a pin hole 21 for a lamp pin to pass through is applied from the back side of an opening 11 provided in the front of a socket, and the neighborhood of the pin hole of the receiving plate 20 is pressed against an inner wall of the socket by an abutting part 2 at one end of a conductive piece 1 in a blade spring shape with another end 4 fixed to the socket, the abutting part side of the conductive piece 1 is cut into a forked shape, and the forked notch 3 is set to have sufficient width through which the lamp pin can be inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp socket (hereinafter abbreviated as "socket") using a pair of sockets facing each other with a fluorescent lamp interposed therebetween.
More particularly, the present invention relates to an improved creation of a contact means between a conductive piece of a socket and a lamp pin.

[0002]

2. Description of the Related Art Conventionally, as a socket of this type, a receiving plate which receives an end of a lamp and has a pin hole through which a lamp pin penetrates is applied from the back side of an opening provided in the front of the socket, and one end is fixed to the socket. It is known that the vicinity of the pin hole of the receiving plate is pressed by the abutting portion at the other end of the leaf spring-shaped conductive piece (for example, Japanese Utility Model 1─4383).
No. 1). In this type of socket, the lamp is sandwiched between a pair of opposed sockets in a state where a lamp pin is inserted into a pin hole and an end of the lamp is pressed against a receiving plate of the socket. At this time, the end of the lamp pin penetrating the pin hole comes into contact with the contact portion of the conductive piece pressing the receiving plate against the inner wall of the socket,
The conduction between the lamp pin and the conductive piece is achieved.

[0003]

However, in the above prior art, since the end of the lamp pin contacts the conductive piece, if the end of the lamp pin has irregularities due to variations in the manufacturing process, the contact area becomes small. There was a possibility that the conductivity became unstable.

Before the lamp is mounted, the conductive piece presses the receiving plate, but after the lamp is mounted, the lamp pins penetrating through the pin holes of the receiving plate come into contact with the receiving plate. There is a possibility that the receiving plate to be pressed may not fulfill its function, and there is also a problem that a coil spring for pressing the receiving plate must be separately provided.

[0005] Among the above problems, as a known invention in which the former problem is a technical problem, there is an invention characterized in that an H-shaped slit is punched in a contact portion of a conductive piece. However, in this known invention, the object through which the lamp pin is inserted is an H-shaped slit that has been punched out, so the restoring force when deformed is weak. There is a possibility that the inner edge of the slit slightly deformed by the pushing and opening does not contact the outer periphery of the lamp pin well even if the slit is inserted. In addition, there is another problem that a complicated H-shaped slit must be punched in the conductive piece, which requires a high manufacturing cost.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a fluorescent lamp socket which solves the above-mentioned problems of the prior art. The receiving plate provided with the hole is applied from the back side of the opening provided in the front of the socket, and the vicinity of the pin hole of this receiving plate is pressed against the inner wall of the socket by the contact portion of the other end of the leaf spring-like conductive piece having one end fixed to the socket. In the socket to be formed, the contact portion side of the conductive piece is cut in a bifurcated shape, and the bifurcated notch is set to have a width in which a lamp pin can be inserted.

Therefore, according to the fluorescent lamp socket of the present invention, the lamp pin penetrating the pin hole of the receiving plate is inserted while pushing the bifurcated notch of the contact portion of the conductive piece open. The effect of conducting is generated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of the fluorescent lamp socket of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing an example of the fluorescent lamp socket of the present invention. In the figure, reference numeral 10 denotes a socket main body. The main body 10 is formed in a case shape with one end opened, and an opening 11 for exposing the receiving plate 20 by attaching the receiving plate 20 from the back side is provided on the front surface.

The receiving plate 20 functions to receive the end of the lamp L, and has a lamp pin LP at the center.
Are provided with a pair of pin holes 21, 21 to penetrate, and a protrusion 22 is provided on the peripheral side to prevent the socket book 10 from coming off when applied from behind the opening 11.

On the other hand, reference numeral 30 in the figure denotes a piece which is fitted into an open portion of the main body 10 of the socket. In this embodiment, the conductive piece is fixed to this piece.

In the figure, reference numeral 1 denotes a conductive piece. This conductive piece 1
Are fixed to the socket body 10 by inserting one end 4 bent in an inverted V-shape into the groove 31 of the piece 30 fitted into the socket body 10. At the same time, the other end is pulled up to make the contact portion 2 with the receiving plate 20 (see FIG. 4). Then, the contact portion 2 side of the conductive piece 1 is cut in a forked shape, and the forked notch 3 is set to have a width in which the lamp pin LP can be inserted. The notch 3 needs to be easily pushed and opened by the insertion lamp pin LP, and it is necessary to secure sufficient elasticity in the pushing and opening direction so as to return to the original shape when the notch 3 is pulled out. Is notch 3
It is realized by increasing the overall length of the motor and securing the stroke. In this case, how much total length is required
As an example, in this embodiment, the length is set to be equal to or longer than the entire length of the contact portion 2 of the conductive piece (see FIGS. 1 and 3).

One end 4 of the conductive piece 1 fixed to the socket body 10 is connected to an external electric wire, and any means may be used, but here, the conductive piece 1 is inserted through an electric wire insertion hole 32 provided in the frame 30. The tip of the electric wire C is connected to one end 4 of the conductive piece 1 and the piece 30
1 illustrates a quick-connecting terminal type inserted between the inner walls.

[0013]

The fluorescent lamp socket of the present invention having the above configuration has the following specific effects. The contact between the inner edge of the notch and the outer periphery of the lamp pin is realized by inserting the lamp pin into the forked cutout provided in the conductive piece instead of contacting the end of the lamp pin with the conductive piece.
Good conduction is always achieved irrespective of the irregularities at the ends of the lamp pins due to variations in the manufacturing process.

As a result of the lamp pin penetrating through the bifurcated cutout provided in the conductive piece, the contact portion of the conductive piece presses the receiving plate even when the lamp is mounted, so that the lamp can be securely clamped. An auxiliary coil spring for pressing the plate is not required, and the structure of the socket can be simplified.

Since the lamp pin is inserted into a bifurcated notch provided in the conductive piece whose one end is opened, the stroke of the notch pushed and opened by the lamp pin is secured by increasing the total length of the notch. Therefore, sufficient elasticity of the notch can be secured. Therefore, after the lamp pin is pulled out, the notch of the conductive piece surely returns to the initial shape, so that a reliable conduction action is realized even when the thickness of the lamp pin varies.

Since it is only necessary to make a bifurcated notch in the conductive piece, the processing is easy, and the cost can be reduced for the effect obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a fluorescent lamp socket of the present invention.

FIG. 2 is a perspective view of the same as in the first embodiment;

FIG. 3 is a perspective view of a conductive piece according to the first embodiment;

FIG. 4 is a partially cutaway perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conductive piece 2 Contact part 3 Notch 10 Socket body 20 Receiving plate L Lamp LP Lamp pin

Claims (2)

[Claims] An opening (11) for receiving an end of a lamp (L) and having a receiving plate (20) provided with a pin hole (21) through which a lamp pin (LP) is to be penetrated is provided at the front of the socket.
Of the receiving plate (20) is pressed against the inner wall of the socket by the contact portion (2) at the other end of the leaf spring-like conductive piece (1) having one end (4) fixed to the socket. In the socket to be provided, the contact portion side of the conductive piece (1) is cut out in a forked shape, and the forked notch (3) is set to have a width that allows insertion of the lamp pin (LP). Fluorescent lamp socket. 2. A bifurcated cutout (3) provided in a conductive piece.
2. The fluorescent lamp socket according to claim 1, wherein the length of the fluorescent lamp is equal to or longer than the entire length of the contact portion of the conductive piece with the receiving plate.