JP2001110535A - Fluorescent lamp socket - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To realize a fluorescent lamp socket complying with international standards without changing dimensions of a mounting module of a lighting fixture. SOLUTION: A receiving plate 20 for receiving an end portion of a lamp L and having a pin hole 21 through which a lamp pin LP penetrates.
From the back side of the opening 11 provided in the front of the socket,
In the socket in which the vicinity of the pin hole of the receiving plate 20 is to be pressed against the inner wall of the socket by the contact portion 2 at one end of the leaf spring-like conductive piece having the rear end fixed to the socket, the interval is smaller than the diameter of the lamp pin. A pair of plate faces are formed of receiving pieces facing each other, and an insertion contact portion T in which a lamp pin can be inserted into this receiving piece is provided in the contact portion 2 of the conductive piece 1.

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 kind, FIG.
0, a receiving plate 52 for receiving an end of the lamp L and having a pin hole 53 through which the lamp pin LP passes.
Is applied from the back side of the opening 51 provided in the front of the socket 50 and the rear end thereof is fixed to the socket.
It is known to press the vicinity of the pin hole of the receiving plate with a contact portion at the tip of the plate. In this type of socket, the lamp is sandwiched between a pair of opposed sockets in a state where the lamp pin is inserted into the pin hole and the end of the lamp is pressed against the 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, so that conduction between the lamp pin and the conductive piece is achieved.

[0003]

The method of contact between the lamp pin and the conductive piece in the above-mentioned socket is called a butt contact method. However, since the conductive piece contacts only the end of the lamp pin, there is a variation in the manufacturing process. Therefore, when there is unevenness at the end of the lamp pin, the contact area may be small and the conduction may be 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 (not shown in FIG. 10) for pressing the receiving plate must be separately provided.

By the way, fluorescent lamp sockets used for lighting equipment for general facilities in Japan have long been widely used in which a movable receiving plate as described above and a butt-contact type conductive piece are combined. On the other hand, in foreign countries, the contact method between the lamp pin and the conductive piece is not such a butt contact method, but a method of inserting the lamp pin into a receiving piece having a pair of plate surfaces facing each other (insertion contact method). From the trend of harmonization of standards, Japanese sockets are also required to switch to this system.

FIG. 11 shows an example of the above-mentioned socket of the insertion contact type. Here, the insertion contact portion 61 is inserted into a slit 62 provided at an end face of the socket 60 and having one end opened.
The lamp L has a configuration in which the lamp pin LP is inserted from the opening of the slit and further inserted along the slit to slide into the contact portion 61. As is clear from this, in the socket employing the plug-in contact method, the end face (receiving plate) of the socket does not move as in the case of the above-mentioned socket which is widely used in Japan.

[0007] Therefore, when the socket, which is currently used and combines a movable receiving plate and a butt-contact type conductive piece, is switched to a socket which combines the above-mentioned fixed receiving plate and a plug-in type conductive piece. However, there has been a problem that the dimensions of the module for mounting the socket of the lighting fixture, which had been set on the assumption that the receiving plate is movable in the full length direction, have to be changed, which requires new costs such as remodeling costs. Will occur.

[0008]

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 backing 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 part of the tip of the leaf spring-like conductive piece whose rear end is fixed to the socket. In the socket to be formed, a pair of plate faces are formed of receiving pieces facing each other with an interval narrower than the diameter of the lamp pin,
An insertion contact portion into which the lamp pin can be inserted into the receiving piece is provided at a contact portion of the conductive piece.

According to a second aspect of the present invention, in the above-described fluorescent lamp socket, a protruding portion narrower than the width of the main body of the conductive piece is provided at one end of the conductive piece so as to be closer to one side, and the conductive piece is formed from a starting point of the protruding portion. By providing a cut in the width direction corresponding to the width of the protruding part at the place where the required dimension is retracted on the main body side of the Also disclosed is an invention in which the insertion contact portion is formed by raising the conductive wire at right angles to the plate surface of the conductive wire along the crease in the full length direction of the piece, and further bending the U-shaped portion from an intermediate portion.

[0010]

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. 1 and 2 are partially cutaway perspective views 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 an open back surface, and an opening 11 for exposing the receiving plate 20 by applying it 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 body 10 from coming out from the back side of the opening 11 of the socket body 10.

On the other hand, reference numeral 30 in the drawing denotes a cover which is covered at an open portion on the back surface of the socket body 10. In this embodiment, the conductive piece is sandwiched and fixed between the cover and the body 10. .

In the drawing, reference numeral 1 denotes a conductive piece. This conductive piece 1
Is made of an elastic material into a leaf spring shape, and the rear end 6 bent in an inverted V-shape is connected to the socket body 10 and the lid 3.
By being clamped between 0 and 0, it is used as a fixing means to the socket, and the tip is pulled up to be the contact portion 2 to the receiving plate 20 (see FIGS. 3 and 4).

The leading end of the conductive piece 1 is provided with an insertion contact portion T, which characterizes the present invention (see FIG. 7). Here, the insertion contact portion T is integrally formed with the conductive piece 1, and is obtained by the following steps. First, a protruding portion 3 narrower than the width of the main body of the conductive piece 1 is provided at one end of the conductive piece 1 so as to be closer to one side, and a protruding portion is provided at a position retracted by a required dimension from the start point of the protruding portion toward the main body of the conductive piece. By providing a cut 4 in the width direction corresponding to the width of the protruding portion, a portion extending from the cut to the tip of the protruding portion is referred to as a contact portion constituting portion T (see FIG. 8). Next, the insertion contact portion T is raised at a right angle to the plate surface of the conductive wire along the fold 5 in the entire length direction of the conductive piece 1 and further folded back in a U-shape from an intermediate portion. Is configured.

In the above-described configuration of the insertion contact portion T, the insertion contact portion is not only cut out of the material integrally with the conductive piece 1 but also when cutting out two or more conductive pieces as shown in FIG. By making the protruding portions 3 face each other, a blank portion on one side of the protruding portion is filled with the protruding portion of another conductive piece, and material loss is minimized.

The rear end 6 of the conductive piece 1 fixed to the socket is connected to an external electric wire.
Here, the wire insertion hole 1 provided in the front of the socket body 10
2 illustrates an immediate connection terminal type in which the tip of the electric wire C inserted from the end 2 is inserted between the tip of the rear end 6 of the conductive piece 1 and the inner wall of the socket body (see FIGS. 1, 2, and 7).

[0017]

The fluorescent lamp socket of the present invention having the above configuration has the following specific effects. Conduction is achieved by inserting the lamp pin into the insertion contact part provided on the conductive piece instead of contacting the end of the lamp pin with the conductive piece, so it is always good regardless of unevenness of the end of the lamp pin due to variation in the manufacturing process Continuity is realized. As a result of the lamp pin being inserted into the insertion contact portion provided on the conductive piece, the contact portion of the conductive piece presses the receiving plate even when the lamp is mounted (see FIG. 4). No need for an auxiliary coil spring for pressing the socket, and the structure of the socket can be simplified. While adopting the plug-in contact method, the receiving plate can be moved as before, so internationally, without changing the module size for mounting the socket of the lighting fixture which was set on the assumption that the receiving plate moves in the full length direction, It is possible to switch to a plug-in type socket that conforms to the standard, and it is not necessary to modify the lighting equipment. In the case of the conductive piece as in the second aspect, the conductive piece and the insertion contact portion are integrated to ensure electrical contact reliability, and moreover, material loss may occur when the conductive piece is cut out from the material. Is prevented.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a fluorescent lamp socket of the present invention.

FIG. 2 is a partially cutaway perspective view showing a state in which a receiving plate of the fluorescent lamp socket of the present invention is retracted.

FIG. 3 is a cross-sectional view of the fluorescent lamp socket of the present invention.

FIG. 4 is a cross-sectional view showing a state in which a receiving plate of the fluorescent lamp socket of the present invention is retracted.

FIG. 5 is a perspective view of the fluorescent lamp socket of the present invention as viewed from the back.

FIG. 6 is a perspective view of the fluorescent lamp socket of the present invention when viewed from the front.

FIG. 7 is a perspective view of a conductive piece of the fluorescent lamp socket of the present invention.

FIG. 8 is a plan view of a main part of the fluorescent lamp socket according to the present invention in a state where conductive pieces are developed.

FIG. 9 is a plan view of a main part of the fluorescent lamp socket of the present invention before cutting out conductive pieces.

FIG. 10 is a perspective view of a conventional fluorescent lamp socket.

FIG. 11 is a front view of a different conventional fluorescent lamp socket.

[Explanation of symbols]

 L lamp LP lamp pin T insertion contact part 1 conductive piece 2 contact part 10 socket body 11 opening 20 receiving plate 21 pin hole

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.
A socket to be pressed against the inner wall of the socket by means of (1) a contact portion (2) at the front end of a leaf spring-shaped conductive piece having a rear end fixed to the socket. , A pair of plate surfaces oppose each other with an interval narrower than the diameter of the lamp pin (LP), and an insertion contact portion (T) capable of inserting the lamp pin into the receiving member is provided on the conductive piece (1). A fluorescent lamp socket provided at the contact part (2). 2. A protruding portion (3) having a width smaller than the width of the main body of the conductive piece (1) is provided at one end of the conductive piece (1) so as to be closer to one side, and a conductive portion is formed from a starting point of the protruding portion (3). By providing a cut (4) in the width direction corresponding to the width of the protruding portion (3) at a place where the piece is retracted by a required dimension on the main body side, the cut (4)
The portion that extends over the tip of the protruding portion (3) is referred to as a plug contact portion component (T), and the plug contact portion component (T)
At a right angle to the plate surface of the conductive wire (1) along a fold (5) in the entire length direction of the conductive piece (1), and further, U
2. The fluorescent lamp socket according to claim 1, wherein the insertion contact portion (T) is formed by folding back in a letter shape.