JPS6333345Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an annular fluorescent lamp socket.

An annular fluorescent lamp is assembled by supporting an annular lamp C on a lamp support spring B of a fixture body A and inserting a socket body D into the lamp C, as shown in FIG. Also, when replacing the lamp, remove the socket D and remove the lamp C from the support spring B.

However, conventional sockets are
As shown in Figure 0, four pin receiving holes F are formed in the socket body E, and a holding type contact terminal G is mounted inside the pin receiving hole F. It provides mechanical support and electrical contact for the socket body E. For this reason, this annular fluorescent lamp socket has disadvantages in that it requires a large amount of force to attach and detach the socket when replacing the lamp, resulting in troublesome prying operations and damage to the lamp base due to excessive force.

Therefore, an object of this invention is to provide an annular fluorescent lamp socket that facilitates the operation of attaching and detaching the socket.

A first embodiment of this invention is shown in FIGS. 1 and 2. That is, this annular fluorescent lamp socket has a lamp pin insertion hole 2 formed in the socket body 1, and a contact terminal 4 holding a lead wire 3 is inserted through the rear end opening of the hole 2 so as to be movable in the axial direction. Then, a spring 5, which is a coil spring, is inserted and its front end is brought into contact with the collar 4a of the contact terminal 4. A cover 7 is attached to the rear surface of the socket body 1, and the rear of the coil spring 5 is inserted into the small diameter hole 6. Support the ends.
In this way, the contact terminal 4 is urged toward the entrance side of the lamp pin insertion hole 2. Furthermore, the middle part of a holding member 8, which is a leaf spring as an example, is screwed to the lid 7, and both ends thereof have circular arc parts 9, 9' and knob pieces 10, 10', facing each other, and It overhangs the front end.

Figure 2 shows the socket installed, with the hole 2 of the socket body 1 connected to the pin (not shown) of the annular fluorescent lamp 11.
At the same time, the front end of the holding member 8 is engaged with the annular fluorescent lamp 11.
As a result, contact pressure is applied between the lamp pin and the contact terminal 4 by the spring 5, and the lamp pin and the contact terminal 4 are brought into electrical contact.
The annular fluorescent lamp 11 is mechanically held by the holding member 8 against the spring action of the annular fluorescent lamp 11 .

On the other hand, when removing the socket, move the knob piece 10 to the second
When opened as shown by the arrow in the figure, when the mechanical engagement with the annular fluorescent lamp 11 is removed, the spring 5 releases from the pin.

With this structure, the lamp socket can be easily attached and detached, and the conventional problem of lamp damage can be solved. Also, since the socket body is mechanically held by a spring, there is no need to worry about it loosening during use.

A second embodiment of this invention is shown in FIG. That is, this annular fluorescent lamp socket is fitted with an annular fluorescent lamp 11 by forming one arcuate part 9a having an arc length longer than a semicircular arc around the lamp's outer circumference in place of the two arcuate parts 9 and 9'. It is structured as follows.

The rest is the same as the first embodiment, and has the same effects.

A third embodiment of this invention is shown in FIGS. 4 and 5. That is, this annular fluorescent lamp socket has two flanges 12,
13, a retaining ring 14 is fitted between the collars 12 and 13, and a pair of rigid holding members 1 are attached to the retaining ring 14.
rotatably supported through the intermediate part of 5 and 15',
A return spring 16 formed of a torsion coil spring is installed between the rear ends of the holding members 15 and 15', and arcuate parts 17 and 17' are formed at the front ends of the annular fluorescent lamp 1.
I try to hold 1. The structure of the contact terminal is similar to that of the first embodiment.

FIG. 5 shows the socket attached, with the holding member 15,
Pinch the rear ends of the 15' together to open the front ends as shown by the arrows, insert the lamp pin (not shown) into the front end opening of the hole 2 of the main body 1', and release your hands. As a result, the holding members 15, 15' clamp the annular fluorescent lamp 11 by the action of the return spring 16, and the socket body 1' is mechanically held. When removing the socket, similarly pinch the rear end sides of the holding members 15, 15'.

Its operation and effect are similar to those of the first embodiment.

FIG. 6 shows a lighting fixture to which a fourth embodiment of this invention is applied. That is, this annular fluorescent lamp socket has a pair of holding members 20, 20' attached to a lamp support spring 19 attached to the fixture body 18 of the lighting fixture.
is formed by cutting and bending so as to clamp the socket body 1''. 21 is a hanging cord;
2 is a pull string for a pull switch, 23 is a glow lamp, 24 is a miniature bulb, and 25 is a shade.

Further, the structure of the contact terminal is the same as that of the first embodiment.

When installing the socket, attach the holding member 20,
A socket is attached to 20', and the annular fluorescent lamp 11 is engaged with the lamp support spring 19, and the lamp is connected at the same time. The same applies when removing it.

With this configuration, the annular fluorescent lamp 11
By attaching and detaching the socket to and from the support spring 19, the socket is also attached and detached at the same time, so the operability is further improved than in the first embodiment. Other effects similar to those of the first embodiment are obtained.

As described above, the annular fluorescent lamp socket of this invention includes a socket body in which the contact terminal is movably disposed in the axial direction of the lamp pin insertion hole and is biased by a spring in the direction of the entrance of the lamp pin insertion hole, and the lamp pin is a holding member which is inserted into the lamp pin insertion hole and removably engages with the annular fluorescent lamp having the lamp pin in a state where the contact terminal is pressed against the spring and holds the socket body to the annular fluorescent lamp; Because of this, it has the following effects. In other words, it is easy to insert and remove the lamp pin, there is no risk of damage due to the insertion and removal, and the contact with the contact terminal is reliable.Furthermore, the holding member allows the socket body to be securely held in the annular fluorescent lamp, and is better than conventional lamp pins. Easy to put on and take off.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view of the first embodiment of this invention.
Figure 2 is a side view of the installed state, Figure 3 is a side view of the second embodiment, Figure 4 is a half-sectional view of the third embodiment, and Figure 5 is a side view of the installed state. Figure 6 is a sectional view of a lighting fixture to which the fourth embodiment is applied, Figure 7 is a sectional view of a lighting fixture to which the conventional example is applied, Figure 8 is a side view of the conventional example, and Figure 9 is a half sectional view thereof. , 10th
The figure is a front view. 1, 1', 1''...Socket body, 2...Lamp pin insertion hole, 4...Contact terminal, 5...Spring, 8,
15, 15', 20, 20'...holding member, 11...
...Annular fluorescent lamp.

Claims (1)

[Claims for Utility Model Registration] (1) A socket body in which a contact terminal is disposed movably in the axial direction of the lamp pin insertion hole and is biased by a spring in the direction of the entrance of the lamp pin insertion hole, and the lamp pin is inserted into the lamp pin insertion hole. a holding member that is inserted into the hole and is removably engaged with the annular fluorescent lamp having the lamp pin in a state where the contact terminal is pressed against the spring and holds the socket body on the annular fluorescent lamp; Annular fluorescent lamp socket. (2) The annular fluorescent lamp socket according to claim 1, wherein the holding member is formed of a leaf spring and is provided on the socket body. (3) The annular fluorescent lamp socket according to claim 1, wherein the holding member is rotatably supported by the socket body and biased by a spring. (4) The annular fluorescent lamp socket according to claim (1), wherein the holding member is formed on a lamp support spring.