JPH09232054A - Fluorescent lamp socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fluorescent lamp socket proper in the stability for contacting a lamp pin, and excellent in the operability of mounting/dismounting, by improving the constitution of a conductive metal fitting. SOLUTION: In a rotary fluorescent lamp socket, wherein a lamp pin 1c is positioned at a conductive position with a conductive metal fitting 3 to be rotatably mounted, by inserting a fluorescent lamp 1 having a base 1b wherein plurl lamp pins 1c are standingly provided, and then turning the lamp 1 with an axis in a direction parallel to the lamp pin 1c as a center; a conductive metal fitting 3, in a mounting-finished condition of the lamp 1, is constituted so that the lamp pin 1c can be energized in a rotation direction when the lamp 1 is mounted. The fluorescent socket is equipped with a socket main body 2, the conductive metal fitting 3, and a cover 4. The conductive metal fitting 3 is constituted of a lock piece 3f to be locked to the socket main body 2, an abutting piece 3g to be contacted to the lamp pin 1c, to have conductivity, and a regulating piece 3h provided on the tip of the abutting piece 3g.

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.

[0002]

9 to 12 show a conventional fluorescent lamp socket (first conventional example). This fluorescent lamp socket is a socket for mounting a straight tube type fluorescent lamp 1a which is a fluorescent lamp 1. And a straight tube fluorescent lamp 1a in which two lamp pins 1c are erected on the bases 1b at both ends,
It is a rotary socket that is rotated around an axis parallel to the lamp axis for rotational mounting, and includes a socket body 2, a conductive metal fitting 3, and a cover 4.

The socket body 2 is made of an insulating material and is provided with a space for accommodating the conductive metal fitting 3 therein. One side of the socket body 2 is cut out from the side wall on one side and is substantially U in plan view.
A rotation groove 2a having a letter shape is formed, and a plate-like cover 4 is attached to the back side thereof. In addition, a partition wall 2b is provided at a substantially central side of the socket body 2 so as to be interposed between the pair of lamp pins 1c inserted into the rotation groove 2a.
Are formed.

The conductive metal fitting 3 is made of a conductive material and is formed by folding a plate-like connecting piece 3a to one end of which the electric wire 5 is connected and an end of the electric wire 5 opposite to the connecting portion 3a. It is constituted by an elastic contact piece 3b which projects into the rotation groove 2a and contacts the lamp pin 1c.
The two conductive metal fittings 3 are arranged such that the connecting pieces 3a are substantially parallel to each other outside the rotation groove 2a of the socket body 2 and the respective contact pieces 3b face the center side of the socket body 2. There is. In addition, a portion located in the rotation groove 2a of the contact piece 3b with which the lamp pin 1c abuts when the mounting of the fluorescent lamp 1 is completed is arranged in a rotation direction in which the mounted lamp pin 1c is disengaged by engaging the lamp pin 1c. In order to maintain a stable contact state with the conductive fitting 3 against the applied force, a recess 3c having a depth dimension A is provided.

In the fluorescent lamp socket thus constructed, one of the lamp pins 1c of the respective caps 1b of the straight tube fluorescent lamp 1a which is the fluorescent lamp 1 is cut out from the side wall on one side of the socket body 2. Insert and push into one side of the opened substantially U-shaped rotation groove 2a, and rotate the other lamp pin 1c into the other side of the rotation groove 2a by rotating the one side lamp pin 1c about the center. Then, the fluorescent lamp 1 is mounted. At this time, lamp pin 1
As shown in FIG. 11, c receives the force P1 from the conductive metal fitting 3 when the lamp pin 1c is on the rotation start side at the time of mounting,
Against this, the contact piece 3b is rotated while being elastically deformed, and is engaged with the recess 3c when the mounting is substantially completed. Here, the lamp pin 1c receives the force P2 from the conductive metal fitting 3, but the conductive metal fitting 3 is provided with the recess 3c in order to resist the component force P0 in the direction of the rotation groove 3a.

FIGS. 13 to 16 show another conventional fluorescent lamp socket (second conventional example). This fluorescent lamp socket is a socket for mounting a single base fluorescent lamp 1d as the fluorescent lamp 1. Then, the socket main body 2, the conductive metal fitting 3, the cover 4, and the fixed spring 6 are provided.

The single-base fluorescent lamp 1d is formed by alternately connecting the other end side and the one end side thereof so that the spaces in the six cylindrical bodies arranged substantially in parallel are continuous. A bulb 1e having a pair of filaments arranged at both ends of the space, and four lamp pins 1c are erected in a direction parallel to the lamp axis on one side of the bulb 1e where the filaments are arranged. One base 1b is formed and is configured. Also, the lamp pin 1c of the base 1b
A substantially quadrangular prism-shaped protruding portion 1f that protrudes in the same direction as the ramp pin 1c is formed substantially along the center axis of the protruding portion 1f, and the protruding portion 1f is formed on the side peripheral wall of the protruding portion 1f.
Is provided with a locking projection 1g that projects in a direction substantially perpendicular to the central axis of the.

The socket body 2 is made of an insulating material and is formed into a substantially cylindrical shape. A concave portion 2c into which a protruding portion 1f of a base 1b of a single-base fluorescent lamp 1d is inserted is formed in a substantially central portion on one surface side.
Is formed in the recess 2c, and a locking hole 2d is provided in the recess 2c. The locking hole 2d is in communication with the recess 2c and is locked by being rotated. Also, the socket body 2
The lamp pin 1c is located outside the recess 2c on one surface side of the lamp pin 1c.
Is provided, and four substantially arc-shaped rotation grooves 2a are provided which are rotatable. A substantially plate-shaped cover 4 is attached to the rear surface side of the socket body 2 opposite to the recess 2c.

The conductive metal fitting 3 is made of a conductive material and is formed by connecting a pair of plate-shaped holding pieces 3d facing each other on the base side, and the holding pieces 3d are connected to the lamp pin 1 of the rotation groove 2a.
4 of the socket main body 2 so as to face along the rotation direction of c.
One is provided on the rear side of each of the two rotation grooves 2a and on the rotation end side of the lamp pin 1c, and the electric wire 5 is connected to the base side thereof.

The fixed spring 6 is provided with cut-and-raised parts 6b in the same direction from both sides at a substantially central portion of a plate-shaped body 6a having a substantially disk shape, and the both ends of the plate-shaped body 6a are bent at an obtuse angle. The mounting leg 6c is provided, and the convex portion 6d is provided so as to project to the outer surface of the mounting leg 6c. Then, the fixed spring 6 is placed in the recess 2c of the socket body 2,
The mounting leg 6c is disposed so as to abut the side wall of the recess 2c, rotates together with the base 1b of the single-base fluorescent lamp 1d, and cuts and raises 6b to recess the protruding portion 1f of the base 1b of the single-base fluorescent lamp 1d. The locking projection 1g is pressed against the front wall of the locking hole 2d to be locked by pressing the opening 2c toward the opening side.

In the thus constructed fluorescent lamp socket, the four lamp pins 1c of the single base fluorescent lamp 1d, which is the fluorescent lamp 1, are inserted into the four rotation grooves 2a, respectively, and the base 1b is inserted into the recess 2c. By inserting and rotating the protruding portion 1f, the locking protrusion 1g is rotationally locked in the locking hole 2d, and the single-base fluorescent lamp 1d is mounted. At this time, the lamp pin 1c is rotated in the rotation groove 2a about the lamp shaft and inserted between the sandwiching pieces 3d of the substantially U-shaped conductive metal fitting 3, and the side wall thereof is sandwiched by the pair of sandwiching pieces 3d. The fixed spring 6 rotates together with the base 1b and engages with the protrusion 6d of the fixed spring 6 and the engaging groove 2e formed in the side wall of the recess 2c of the socket body 2. A click feeling that is a feeling of completion of attachment / detachment of the gold fluorescent lamp 1d is obtained.

[0012]

However, in the fluorescent lamp socket shown in the first conventional example having such a structure, the lamp pin 1c of the straight tube fluorescent lamp 1a, which is the mounted fluorescent lamp 1, is electrically conductive. In order to maintain a stable contact state with the conductive metal fitting 3 against the force in the rotating direction for separating the fluorescent lamp 1 from the metal fitting 3, the contact piece 3b.
It is necessary to provide a recess 3c having a depth A that engages with the lamp pin 1c. For this reason, when the fluorescent lamp 1 is mounted, the conductive metal fitting 3 bends more than the conductive metal fitting 3 that only obtains the contact pressure of the lamp pin 1c by a dimension A, and the conductive metal fitting 3 is required to maintain the same stress. However, there is a problem in that it is necessary to increase the size of the product and the amount of members used increases, which may cause a cost increase.

Further, in the fluorescent lamp socket shown in the second conventional example, the lamp pin 1 is provided between the sandwiching pieces 3d of the conductive metal fitting 3.
When c starts to be inserted, the frictional resistance impairs the smoothness of the rotational feeling. Further, when the fluorescent lamp 1 is rotated when it is mounted, the lamp pin 1c is held by the sandwiching piece 3d of the conductive metal fitting 3.
In order to obtain a click feeling, which is a feeling of completion of attachment / detachment of the fluorescent lamp 1, by sliding the convex portion 6d of the fixed spring 6 into the groove 2e provided on the side wall of the recess 2c of the socket body 2 in the vicinity of the position where the fluorescent lamp 1 is clamped. However, due to the above-mentioned frictional resistance, the smooth feeling that the convex portion 6d of the fixed spring 6 slips into the groove 2e is obstructed, and it is difficult to understand that the mouthpiece 1b has stopped at the mounting completion position, and the operability is poor. There was a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a fluorescent lamp socket having good stability of contact with a lamp pin and excellent operability of attachment / detachment. .

[0015]

In order to solve the above problems, the present invention provides a fluorescent lamp 1 having a base 1b on which a plurality of lamp pins 1c are erected. After that, in the rotary fluorescent lamp socket in which the lamp pin 1c is positioned at a conductive position with the conductive fitting 3 and is rotationally locked by rotating the lamp pin 1c about an axis parallel to the lamp pin 1c, the conductive fitting 3 is When the fluorescent lamp 1 is completely mounted, the lamp pin 1c is urged in the rotating direction when the fluorescent lamp 1 is mounted.

According to the invention of claim 2, claim 1
In the fluorescent lamp socket described above, the conductive metal fitting 3 has the lamp pin 1c on the mounting start side of the fluorescent lamp 1.
Is urged in the rotating direction to separate the fluorescent lamp 1.

According to the invention of claim 3, claim 2
In the described fluorescent lamp socket, the conductive metal fitting 3 is composed of a reversing spring 7.

According to a fourth aspect of the present invention, in the fluorescent lamp socket according to the second or third aspect, the fluorescent lamp 1 is provided with a base 1b on which two lamp pins 1c are erected. A straight tube fluorescent lamp 1a,
The conductive metal fitting 3 has a socket body 2 provided with a rotation groove 2a in which the lamp pin 1c is rotatable, and a tip end thereof is a rotation start side of the lamp pin 1c when the fluorescent lamp 1 is mounted, and a base portion 3e is directed toward a rotation end side. Locking piece 3f that is accommodated and stored
And a contact piece 3g which is integrally formed from the tip of the locking piece 3f, protrudes into the rotation groove 2a and contacts the lamp pin 1c, and the base 3e of the locking piece 3f is the fluorescent member. Two lamp pins 1 with lamp 1 installed
The lamp pin 1 in the rotation groove 2a is more than the line connecting the centers of c
The contact piece 3g is locked to the c-insertion side, and the distance between the center of the lamp pin 1c and the base portion 3e of the locking piece 3f when the lamp pin 1c starts contacting on the rotation start side of the lamp pin 1c is the same. The center of the lamp pin 1c and the base portion 3e of the locking piece 3f when the lamp pin 1c is in the mounting completed state
When one lamp pin 1c forming a pair is located at the mounting completion position and the other lamp pin 1c is the rotation start side at the time of mounting, the one lamp pin 1c is longer than the distance between them.
An obtuse angle θ1 is formed on the side where the other lamp pin 1c abuts with respect to a line connecting the center of the above and the base portion 3e of the locking piece 3f,
When both the lamp pins 1c are at the mounting completion position,
It is characterized in that an acute angle θ2 is formed on the side where the other lamp pin 1c comes into contact with a line connecting the center of the one lamp pin 1c and the base portion 3e of the locking piece 3f.

According to a fifth aspect of the present invention, in the fluorescent lamp socket according to the second or third aspect, the fluorescent lamp 1 has a base 1b at one end of which a plurality of lamp pins 1c are erected. A single-base fluorescent lamp 1d,
The conductive metal fitting 3 has a socket body 2 provided with a rotation groove 2a in which the lamp pin 1c is rotatable, and a tip end thereof is a rotation start side of the lamp pin 1c when the fluorescent lamp 1 is mounted, and a base portion 3e is directed toward a rotation end side. Locking piece 3f that is accommodated and stored
And a contact piece 3g which is integrally formed from the tip of the locking piece 3f and projects into the rotation groove 2a and contacts the lamp pin 1c. The base portion 3e of the locking piece 3f is provided.
However, the center of the lamp pin 1c when the lamp pin 1c starts contacting the contact piece 3f on the rotation start side of the lamp pin 1c when the fluorescent lamp 1 is mounted, and the lamp pin 1
The center of the lamp pin 1c when c is at the mounting completion position is locked to the inner side wall of the socket body 2 positioned within an angle formed with the lamp axis of the fluorescent lamp 1, and
The contact piece 3g is a line connecting the base 3e of the locking piece 3f and the lamp shaft of the fluorescent lamp 1 at a position where the lamp pin 1c starts to contact on the rotation start side of the lamp pin 1c when the fluorescent lamp 1 is mounted. On the other hand, when the lamp pin 1c makes an obtuse angle θ1 on the contacting side and the lamp pin 1c is at the mounting completion position, the lamp pin is connected to the line connecting the base 3e of the locking piece 3f and the lamp shaft of the fluorescent lamp 1. It is characterized in that the contact side of 1c forms an acute angle θ2.

According to a sixth aspect of the present invention, in the fluorescent lamp socket according to the fourth or fifth aspect, the rotation end side of the lamp pin 1c when the fluorescent lamp 1 is mounted on the contact piece 3g. The tip end is provided with a restriction piece 3h for restricting sliding of the lamp pin 1c in the rotation end direction of the lamp pin 1c when the fluorescent lamp 1 is mounted.

[0021]

1 to 5 show a first embodiment of a fluorescent lamp socket according to the present invention. This fluorescent lamp socket is a straight tube type fluorescent lamp 1a which is a fluorescent lamp 1. It is a socket for mounting the
This is a rotary socket for rotating and mounting a straight tube fluorescent lamp 1a, in which lamp pins 1c forming a pair are set upright, around a shaft parallel to the lamp shaft, and a socket body 2; It is configured to have a conductive metal fitting 3 and a cover 4.

The socket body 2 is made of an insulating resin and is formed in a substantially columnar shape. A space for accommodating the conductive metal fitting 3 is formed inside the socket body 2. A substantially plate-shaped cover is provided from the back side thereof. 4 is attached. In plan view, one side thereof is cut out from the side wall on one side to form a substantially U shape, and the trough side of the substantially U shape is the socket body 2
A rotation groove 2a is formed which opens to one side and into which the lamp pin 1c is inserted from the side. In addition, a partition wall 2b is formed at a substantially central side of the socket body 2 so as to be interposed between a pair of lamp pins 1c inserted into the rotation groove 2a and attached, and the attached two lamp pins 1c. A locking groove 2f for locking the conductive metal fitting 3 is provided on the inner side wall of the socket body 2 on the rotation start side of the rotation groove 2a with respect to the line connecting the centers of the socket body 2 and on the side of the rotation groove 2a. ing. In addition, on the side wall opposite to the side where the rotation groove 2a is provided, the insertion port 2 into which the electric wire 5 connected to the conductive fitting 3 is inserted.
g is provided.

The conductive metal fitting 3 is formed integrally by bending an elastic substantially band-shaped conductive member, and is housed in a pair in the socket body 2 and is locked to the socket body 2. 3 f of locking pieces, a contact piece 3 g that comes into contact with the lamp pin 1 c to establish conduction, and a restricting piece 3 h provided at the tip of the contact piece. Locking piece 3f
In the locking groove 2f of the socket body 2 is the base 3 which is one end.
e is inserted and locked, and the tip thereof is arranged so as to face the rotation start side of the lamp pin 1c when the fluorescent lamp 1 is mounted, and the contact piece 3g is folded back from the tip of the locking piece 3f. Thus, the tip side projects into the rotation groove 2a and contacts the lamp pin 1c in the rotation groove 2a, and the locking piece 3f and the contact piece 3g form a substantially U shape. Has been done. In addition, the restriction piece 3h is provided with a tip end of the rotation end side of the contact piece 3g when the fluorescent lamp 1 is attached.
The lamp pin 1c is provided so as to be bent on the side opposite to the locking piece 3f side and regulate the sliding of the lamp pin 1c in the rotation end direction of the lamp pin 1c when the fluorescent lamp 1 is mounted.

The conductive metal fitting 3 is used for the fulfillment lamp 1
On the rotation start side of the lamp pin 1c at the time of mounting the lamp pin 1c, the distance between the center of the lamp pin 1c and the base 3e of the locking piece 3f when the lamp pin 1c starts to contact the contact piece 3g is such that the lamp pin 1c is in the completed mounting state. It is longer than the distance between the center of the lamp pin 1c and the base 3e of the locking piece 3f at a certain time, and is substantially perpendicular to the line connecting the center of the lamp pin 1c and the base 3e of the locking piece 3f when the lamp pin 1c starts contacting. It is designed to Also, two lamp pins 1 that make a pair
When one of the lamp pins 1c of c is positioned at the mounting completion position and the other lamp pin 1c is brought into contact with the contact piece 3g on the rotation start side at the time of mounting, the center of the one lamp pin 1c at the mounting completion position It is formed to form an obtuse angle θ1 on the side where the other lamp pin 1c abuts with respect to the line connecting the base 3e of the locking piece 3f, that is, on the side where the lamp pin 1c is inserted into the rotation groove 2a. In this state, the other lamp pin 1c is biased in the rotational direction in which the fluorescent lamp 1 is removed. Also, the other lamp pin 1
When c is rotated to elastically deform the conductive fitting 3 and the pair of lamp pins 1c are in a completely mounted state, the abutting piece 3g is at least in the vicinity of abutting on the lamp pin 1c and is in contact with the center of one lamp pin 1c. Base 3 of stop piece 3f
It is configured such that an acute angle θ2 is formed on the side where the other lamp pin 1c comes into contact with the line connecting with e, and in this state, the other lamp pin 1c is biased in the rotational direction in which the fluorescent lamp 1 is removed. Has been

That is, the conductive metal fitting 3 is in contact with either of the pair of lamp pins 1c when the lamp pin 1c is in contact with the rotation groove 2a on the rotation start side when the fluorescent lamp 1 is mounted. When the lamp pin 1c is on the mounting completion side of the fluorescent lamp 1 in the rotation groove 2a, a force is applied in the direction to rotate the lamp pin 1c.
A force is applied in a direction of further pushing to hold the lamp, and the force is applied to the lamp pin 1c in the direction of rotation so that the force applied to the lamp pin 1c is reversed at the point P which is a predetermined position in the rotation. It is said that.

In the fluorescent lamp socket having such a structure, one of the two lamp pins 1c provided upright on each base 1b of the straight tube fluorescent lamp 1a, which is the fluorescent lamp 1, is connected to the socket main body 2. It is inserted into one side of the substantially U-shaped rotation groove 2a cut out from the side wall on one side and pushed into a substantially completely mounted state, and the other lamp pin 1c is provided on the other side of the rotation groove 2a and on the one side. The fluorescent lamp 1 is mounted by rotating the lamp pin 1c about its center and pushing it in. At this time, a force is applied to the lamp pin 1c on the contact surface of the conductive metal fitting 3 with the contact piece 3g, and the lamp pin 1c is actually
Although its position moves with the movement of c, this force will be simplified and described in detail below as being applied to the center of the lamp pin 1c.

When the lamp pin 1c is on the rotation start side at the time of mounting, as shown in FIG. 4, the lamp pin 1c disengages (removes) the fluorescent lamp 1 and urges the component force F in the rotational direction.
When the lamp pin 1c is rotated while resisting the force F4, the conductive pin 3 is elastically deformed and the lamp pin 1c moves in the rotation groove 2a to generate a component force F4.
Becomes smaller gradually. The center of the lamp pin 1c is the lamp pin 1c on one side and the base 3 of the conductive fitting 3 on the other side.
When the point P on the line connecting e is reached, the component force F at that point P
4 becomes substantially zero, and when the lamp pin 1c is further rotated, the conductive metal fitting 3 is further elastically deformed and the lamp pin 1c is rotated.
However, as shown in FIG. 5, it reaches the mounting completion position. At this time, the lamp pin 1c has a force F7 having a component force F6 that urges the fluorescent lamp 1 in the rotational direction to further push it in and hold it.
However, this component force F6 is generated from the time when the point P is passed and gradually increases.

With the above-mentioned structure, the lamp pin 1 is included in the fluorescent lamp socket of the present embodiment.
When c is on the rotation start side when mounted, the lamp pin 1
Since force is applied in the direction of separating c from the conductive metal fitting 3,
Incomplete mounting can be easily recognized, and when the fluorescent lamp 1 is removed, if the fluorescent lamp 1 is rotated by a predetermined angle or more, a force is applied in that direction to easily remove the fluorescent lamp 1 and the operability is improved. When the lamp pin 1c is completely attached, the lamp pin 1
Since a force is applied to the side from which the fluorescent lamp 1 is mounted from the conductive metal fitting 3, the contact state is maintained, and therefore the lamp pin 1c
The stability of contact with the fluorescent lamp 1 can be improved, and the operability of mounting the fluorescent lamp 1 can be improved. Further, it is not necessary to provide a recess at the tip of the conductive fitting 3 for holding and stabilizing the contact state with the lamp pin 1c, the bending of the conductive fitting 3 can be reduced by the depth of the recess, and if the stress is the same, conductive The fitting 3 can be made smaller, and the fluorescent lamp socket can be made smaller. Furthermore, if the conductive metal fittings 3 have the same size, the contact force is increased, so that the contact stability is further improved and the energization performance is improved. Further, the reversing spring 7 in which the force applied to the lamp pin 1c by the conductive metal fitting 3 when the lamp pin 1c exceeds the predetermined position P when the fluorescent lamp 1 is mounted is switched from the force for detaching the lamp pin 1c to the force for mounting it. Therefore, when the predetermined position P is exceeded, a force in the mounting direction is applied to the lamp pin 1c, and a clicking feeling that is a mounting feeling can be generated.
Further, since the restricting piece 3g is provided at the tip of the abutting piece 3f of the conductive metal fitting 3, the lamp pin 1c does not slide much in the rotating direction when the fluorescent lamp 1 is mounted, so that the frictional resistance due to the sliding is reduced. It is reduced, and the click feeling, which is the feel of wearing, is less likely to be impaired.

FIGS. 6 to 8 show a second embodiment of the fluorescent lamp socket according to the present invention. This fluorescent lamp socket has a single base as the fluorescent lamp 1 shown in the second conventional example. This is a socket to which the fluorescent lamp 1d is mounted, and is configured to have a socket body 2, a conductive metal fitting 3, a cover 4, and a fixed spring 6.

The socket body 2 is made of an insulating material and is formed into a substantially columnar shape.
A recess 2c into which the protrusion 1f of the base of the single-base fluorescent lamp 1d is inserted is formed in a substantially central portion of the surface on which the is mounted, and the recess 2c is for communicating with and engaging with the recess 2c. Protrusion 1
A locking hole 2d that locks when g is inserted and rotated is provided. Further, on the outside of the recess 2c, there are provided four substantially circular arc-shaped rotation grooves 2a into which the lamp pins 1c are inserted and which are rotatable, and are formed on the sides of the respective rotation grooves 2a. On the inner wall of the socket body 2,
A locking groove 2f for locking the conductive fitting 3 is provided. In the figure, 2h is a suitable single-base fluorescent lamp 1d using a rib provided on the base of the single-base fluorescent lamp 1d.
In the case of a single-base fluorescent lamp 1d which can be mounted only, and which is not suitable, a rib provided on the base is mounted to prevent the partition from being mounted.

The conductive metal fitting 3 is similar to the conductive metal fitting 3 in the first embodiment, and the lamp pin 1c when the tip of the fluorescent lamp 1 is mounted on the socket body 2 having the rotation groove 2a.
On the rotation start side, the base portion 3e is housed with the base portion 3e directed toward the rotation end side, and the locking piece 3f integrally formed from the tip of the locking piece 3f protrudes into the rotation groove 2a and abuts the lamp pin 1c. The contact piece 3g and the tip of the contact piece 3g on the rotation end side when the fluorescent lamp 1 is attached are provided to prevent the lamp pin 1c from sliding in the rotation end direction of the lamp pin 1c when the fluorescent lamp 1 is attached. It has the restriction piece 3h which does. The base portion 3e of the locking piece 3f contacts the lamp pin 1c on the rotation start side when the fluorescent lamp 1 is mounted.
The inner wall of the socket body 2 located within an angle θ3 formed between the center of the lamp pin 1c when the lamp pin 1c starts to contact the lamp pin 1c and the center of the lamp pin 1c when the lamp pin 1c is at the mounting completion position. Is locked to
The contact piece 3g is a lamp pin 1c when the fluorescent lamp 1 is mounted.
When the lamp pin 1c is in the mounting completion position, an obtuse angle is formed on the side where the lamp pin 1c abuts with respect to the line connecting the base portion 3e of the locking piece 3f and the central axis of the fluorescent lamp 1 at the position where An acute angle is formed on the side where the lamp pin 1c contacts the line connecting the base 3e of the stop piece 3f and the central axis of the fluorescent lamp 1.

The fixed spring 6 is provided with cut-and-raised parts 6b from both sides in the same direction at substantially the center of a substantially disk-shaped plate-shaped body 6a, and the both ends of the plate-shaped body 6a are bent at an obtuse angle. The mounting leg 6c is provided, and the convex portion 6d is provided so as to project to the outer surface of the mounting leg 6c. Then, the fixed spring 6 is provided in the recess 2
The mounting leg 6c is disposed in the c so as to abut the side wall of the recess 2c, rotates together with the base 1b of the single-base fluorescent lamp 1d, and the cut-and-raised 6b projects the base 1b of the single-base fluorescent lamp 1d. The portion 1f is pressed against the opening side of the recess 2c, and the locking projection 1g is pressed against the front wall of the locking hole 2d to be locked. The fixed spring 6 is housed in the recess 2c of the socket body 2, and
A conductive metal fitting 3 is housed from the rear side of the recess 2c of the socket body 2 from the rear side, and a substantially plate-shaped cover 4 is attached from the rear side.

In the thus constructed fluorescent lamp socket, the four lamp pins 1c of the single base fluorescent lamp 1d, which is the fluorescent lamp 1, are inserted into the four rotation grooves 2a, respectively, and the base 1b is inserted into the recess 2c. By inserting the projecting portion 1f and rotating it together with the fixed spring 6, the locking projection 1g is rotated and locked in the locking hole 2d, and the single-base fluorescent lamp 1d is mounted. At this time, the lamp pin 1c is rotated in the rotation groove 2a about the lamp shaft and comes into contact with the conductive metal fitting 3 to be mounted while elastically deforming the conductive metal fitting 3. The lamp pin 1 at that time will be described below.
The force applied to c will be described in detail in the same manner as in the first embodiment.

That is, when the lamp pin 1c is on the rotation start side at the time of mounting, the lamp pin 1c receives a force having a component force for urging the fluorescent lamp 1 in the rotating direction, and rotates the lamp pin 1c against it. Then, the conductive pin 3 is elastically deformed and the lamp pin 1c moves, and the force gradually decreases. When the center of the lamp pin 1c reaches a point P on the line connecting the central axis of the fluorescent lamp 1 and the base 3e of the conductive metal fitting 3, the component force at the point P becomes substantially zero, and the lamp pin 1c is further rotated. The conductive metal fitting 3 is further elastically deformed and the lamp pin 1c reaches the mounting completion position. At this time, the lamp pin 1c pushes the fluorescent lamp 1 further and holds it, and the component force F6 is urged in the rotational direction.
The force F7 having the force is generated, but this component force F6 is generated from the time when the point P is passed and gradually increases.

Since the fluorescent lamp socket according to the present embodiment is constructed in this manner, the same effects as those of the first embodiment can be obtained, and the fixing spring 6 is used when the fluorescent lamp 1 is mounted. When slipping into the engaging groove,
By applying a force in the rotating direction from the conductive metal fitting 3 to the lamp pin 1c as well, the click feeling, which is the feeling of wearing, can be felt more clearly, which helps prevent incomplete fitting.

[0036]

According to the invention described in claim 1, because of the above-mentioned structure, in the mounting completed state of the lamp pin, a force is applied to the lamp pin from the conductive metal fitting to the side where the fluorescent lamp is mounted. Since the contact state is maintained by adding it, operability is improved, and there is no need to provide a recess at the tip of the conductive fitting to maintain and stabilize the contact status with the lamp pin, and the conductive fitting is the depth of the recess. Can be reduced, and if the stress is the same, the size of the conductive metal fitting can be reduced to reduce the size of the fluorescent lamp socket, and the stability of contact with the lamp pin can be improved. Further, if the conductive metal fittings have the same size, the contact force becomes large, so that the stability of contact is further improved and the energization performance is improved.

According to the second aspect of the present invention, there is provided the first aspect.
In addition to the effects of the invention described, when the lamp pin is on the rotation start side at the time of mounting, force is applied in the direction of separating the lamp pin from the conductive metal fitting, so that it is easy to recognize incomplete mounting, and when removing the fluorescent lamp. Moreover, the force is applied in that direction to improve the operability.

According to the third aspect of the present invention, there is provided the second aspect.
In addition to the effects of the invention described above, the conductive metal fitting is a reversing spring, and the force applied to the lamp pin when the lamp pin exceeds a predetermined position during mounting of the fluorescent lamp is different from the force in the direction of detaching the lamp pin. Since the force is switched to the force, a force in the mounting direction is applied to the lamp pin beyond a predetermined position, and a click feeling that is a mounting feeling can be generated.

According to the invention of claim 4, in addition to the effect of the invention of claim 2 or 3, when the fluorescent lamp is mounted, a force in the rotating direction is applied from the conductive metal fitting to the lamp pin. As a result, the click feeling, which is the feeling of wearing, can be felt more clearly, which helps prevent incomplete wearing.

According to the invention of claim 5, claim 4 is provided.
In addition to the effects of the invention described above, a restriction piece is provided at the tip of the contact piece of the conductive metal fitting, and the lamp pin does not slide much in the rotating direction when the fluorescent lamp is mounted, so friction due to sliding The resistance is reduced, and the click feeling, which is the feel of wearing, can be less likely to be impaired.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of a first embodiment of a fluorescent lamp socket of the present invention.

FIG. 2 is a perspective view of a main portion inside the same.

FIG. 3 is a front view of a main part of the above.

FIG. 4 is a front view of a partial cross section of the main part for explaining the process of mounting the above fluorescent lamp.

FIG. 5 is a front view of a partial cross section of a main part showing a state in which the fluorescent lamp is completely mounted.

FIG. 6 is a plan view of a partial cross section of a second embodiment of the fluorescent lamp socket of the present invention.

FIG. 7 is a plan view of a partial cross section showing a state where the above fluorescent lamp is completely attached.

FIG. 8 is a partial cross-sectional plan view of the main part of the above.

FIG. 9 is a perspective view showing a conventional fluorescent lamp socket (first conventional example) and a main part of the fluorescent lamp.

FIG. 10 is a front view of the same.

FIG. 11 is a front view illustrating a force applied to the lamp pin of the above.

FIG. 12 is a side view showing a main part of the above-mentioned conductive fitting.

FIG. 13 is another conventional fluorescent lamp socket (second conventional example).
It is a perspective view which shows and a fluorescent lamp.

FIG. 14 is an exploded perspective view of the above.

FIG. 15 is a plan view of the above.

FIG. 16 shows the above-mentioned conductive metal fittings and lamp pins,
(a) is a perspective view and (b) is a plan view.

[Explanation of symbols]

 1 Fluorescent Lamp 1a Straight Tube Fluorescent Lamp 1b Base 1c Lamp Pin 1d Single Base Fluorescent Lamp 2 Socket Main Body 2a Rotating Groove 3 Conductive Metal 3e Base 3f Locking Piece 3g Abutment Piece 3h Restricting Piece 7 Reversing Spring θ1 Obtuse Angle θ2 Sharp Angle

Claims (6)

[Claims] 1. A rotary lamp which inserts a fluorescent lamp having a base on which a plurality of lamp pins are erected, and rotates the lamp pin about an axis parallel to the lamp pin so as to position the lamp pin at a conductive position with a conductive metal fitting. In the rotary fluorescent lamp socket to be stopped, the conductive metal member urges the lamp pin in a rotation direction when the fluorescent lamp is mounted in a state where the fluorescent lamp is completely mounted. 2. The fluorescent lamp socket according to claim 1, wherein the conductive metal member urges the lamp pin in a rotation direction in which the fluorescent lamp is detached on the mounting start side of the fluorescent lamp. 3. The fluorescent lamp socket according to claim 2, wherein the conductive fitting is composed of a reversing spring. 4. The fluorescent lamp is a straight tube type fluorescent lamp having a base on which two lamp pins are erected and provided at both ends thereof, and the conductive metal member has a rotation groove in which the lamp pin is rotatable. A locking piece that is housed with the tip of the lamp pin in the socket body as the rotation start side of the lamp pin when the fluorescent lamp is mounted and the base of the socket is oriented toward the rotation end side, and is integrally formed from the tip of the locking piece to rotate the lamp pin. A contact piece protruding into the groove for contacting with the lamp pin, and a base portion of the locking piece is a lamp pin in the groove for rotation more than a line connecting the centers of the two lamp pins in the mounting state of the fluorescent lamp. The lamp pin is locked to the insertion side, and the distance between the center of the lamp pin and the base of the locking piece when the lamp pin starts contacting on the rotation start side of the lamp pin is such that the lamp pin is in the mounting completed state. When Longer than the distance between the center of the lamp pin and the base of the locking piece, when one lamp pin that makes a pair is positioned at the mounting completion position and the other lamp pin is the rotation start side at the time of mounting, the center of the one lamp pin When the other lamp pin makes an obtuse angle with respect to the line connecting the base of the locking piece and both of the lamp pins are at the mounting completion position, the center of the one lamp pin and the base of the locking piece The fluorescent lamp socket according to claim 2 or 3, wherein an acute angle is formed on a side of the other lamp pin which abuts the line connecting to and. 5. The fluorescent lamp is a single-base fluorescent lamp having at one end a base on which a plurality of lamp pins are erected, wherein the conductive metal member has a socket body having a rotation groove in which the lamp pin is rotatable. A locking piece whose tip is the rotation start side of the lamp pin when the fluorescent lamp is mounted and whose base is oriented toward the rotation end side; and the rotation groove formed integrally with the tip of this locking piece. When the base portion of the locking piece starts contacting with the contact piece at the rotation start side of the lamp pin when the fluorescent lamp is mounted, The lamp pin center and the lamp pin center when the lamp pin is at the mounting completion position are locked to the inner wall of the socket body located within an angle formed between the lamp shaft of the fluorescent lamp and The abutting piece is a side where the lamp pin abuts with respect to a line connecting the base of the locking piece and the lamp shaft of the fluorescent lamp at a position where the lamp pin starts abutting on the rotation start side of the lamp pin when the fluorescent lamp is mounted. When the lamp pin is at the mounting completion position, an acute angle is formed on the side where the lamp pin abuts with respect to the line connecting the base of the locking piece and the lamp shaft of the fluorescent lamp. The fluorescent lamp socket according to claim 2 or 3, characterized in that. 6. A restricting piece for restricting sliding of the lamp pin in the rotation end direction of the lamp pin when the fluorescent lamp is attached to the tip of the abutting piece on the rotation end side of the lamp pin when the fluorescent lamp is attached. The fluorescent lamp socket according to claim 4 or 5, further comprising: