JP2002319465A - Lamp socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp socket for straight tube fluorescent lamps, which can prevent that an installed feeling becomes bad, can set the lamp easily, and can prevent lamp from falling and unstable contact. SOLUTION: A lamp-pin contact element 3 has a convex part 27 toward a center axis direction of the lamp. The rotary element 2 has a pair of 1st convex parts 32 and a pair of 2nd convex parts 33, which overcome the convex part 27 at the time of the turning the lamp to set. The lamp pin 20 and the lamp-pin contact element 3 do not contact until the 1st convex part 32 overcomes the convex part 27 of the lamp-pin contact element 3, when inserting the lamp pin 20 and turning the rotating element 2. Moreover, it contacts until the 1st convex part 32 overcomes the convex part 27 of the lamp-pin contact element 3 and the 2nd convex part 33 gets over. Furthermore, when the 2nd convex part 33 overcomes the convex part 27 of the lamp-pin contacting element 3, it stops contacting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket applied to a lighting device using a straight tube fluorescent lamp.

[0002]

2. Description of the Related Art Conventional lamp sockets (for example,
No. 50-10695, JP-A-8-167459), a socket body having an opening in the front surface and having a lamp pin insertion groove communicating from the outer edge to the opening, and the socket body is provided rotatably in the opening. A rotor having a guide groove on the front surface for guiding the lamp pin in communication with the lamp pin insertion groove, and a lamp pin contact disposed in the socket body. When the lamp is mounted, the lamp pin is inserted into the guide groove from the lamp pin insertion groove, the lamp pin is rotated to rotate the rotor together, and the lamp pin is brought into contact with the lamp pin contact and held to be turned on.

When the lamp is removed, the lamp is rotated and the lamp pin is pulled out from the lamp pin insertion groove.

[0004]

As means for giving a feeling when the lamp is mounted, there is a means which is provided between the socket body of the housing and the rotor, and a means which is provided between the projection of the rotor and the lamp pin contact terminal. there were.

The former relies on the resiliency of the resin,
There is a drawback that the wearing feeling is deteriorated due to long-term use and repeated attachment and detachment of the lamp.

[0006] The latter has a structure in which the mounting is completed when the rotor is rotated by 90 degrees, and has a disadvantage that it is difficult to rotate the rotor by 90 degrees in a narrow place where it is difficult to replace the lamp. Further, under such conditions, the lamp is mounted in an incomplete state, and there is a danger of heat generation and ignition due to the lamp falling or unstable contact.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lamp socket which can prevent a feeling of mounting from being deteriorated, can easily mount a lamp, and can prevent a lamp from falling or an unstable contact.

[0008]

According to the present invention, there is provided a lamp socket, comprising: a socket body having an opening in a front surface and a lamp pin insertion groove communicating from the outer edge to the opening.
A lamp having a guide groove rotatably provided in the opening and communicating with the lamp pin insertion groove to guide the lamp pin on a front surface; and a lamp pin contact disposed in the socket body. By rotating the lamp pin inserted into the guide groove from the insertion groove together with the rotor, the lamp pin contacts the lamp pin contact in a lamp socket for a straight tube fluorescent lamp. The rotor has a convex portion toward the axial direction, the rotor has a pair of first convex portions and a pair of second convex portions that go over the convex portions during rotation for lamp mounting, and When inserting and rotating the rotor, the lamp pin and the lamp are used until the first convex portion gets over the convex portion of the lamp pin contact. The first contact does not come into contact with the first contact, and the first protrusion contacts the protrusion of the lamp pin contact until the second protrusion passes over the second protrusion. It is characterized in that it does not come into contact when it gets over the convex part.

According to the lamp socket of the first aspect,
At the time of mounting the lamp, a touch is obtained by a rotation operation sufficiently smaller than 90 degrees to complete the mounting of the lamp, so that the mounting of the lamp is easy. In addition, since the protrusion of the rotor is mounted over the lamp pin contact by elastically deforming the protrusion of the lamp pin contact, it is possible to prevent the lamp from falling and prevent unstable contact. Even if it is accidentally rotated too much, it is still in contact, and it needs to be rotated again to the position where it is removed, so that safety against contact is high.

According to a second aspect of the present invention, in the lamp socket according to the first aspect, the convex portion of the lamp pin contact fits approximately in the middle between the first convex portion and the second convex portion of the rotor. A recess is provided.

According to the lamp socket of the second aspect,
In addition to the same effects as those of the first aspect, since the rotor does not rotate carelessly in a state where the guide groove is aligned with the lamp pin insertion groove, insertion of a new lamp pin becomes easy.

According to a third aspect of the present invention, in the lamp socket according to the first aspect, the convex portion of the lamp pin contact fits approximately in the middle between the second convex portion and the first convex portion of the rotor. A recess is provided.

According to the lamp socket of the third aspect,
In addition to the same effects as those of the first aspect, the rotation of the rotor due to vibration or the like can be prevented by fitting the concave and convex portions while the lamp pin is in contact with the lamp pin contact.

According to a fourth aspect of the present invention, in the lamp socket according to the first aspect, the convex portions of the lamp pin contacts are respectively fitted at substantially intermediate portions between the first convex portion and the second convex portion of the rotor. It is provided with a concave portion that fits.

According to the lamp socket of the fourth aspect,
There is an effect similar to that of the second or third aspect.

According to a fifth aspect of the present invention, in the lamp socket according to the first aspect, the convex portion of the lamp pin contact is provided at a position where the convex portion does not engage with the lamp pin.

According to the lamp socket of the fifth aspect,
In addition to the same effects as those of the first aspect, the operability is facilitated because the lamp pin does not need to climb over the convex portion of the lamp pin contact.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lamp socket for a straight tube fluorescent lamp has a socket body 1, a rotor 2, and a lamp pin contact 3.

The socket body 1 has, for example, an opening 4 on the front surface as shown in FIG. 6 and a lamp pin insertion groove 5 communicating from the outer edge to the opening 4. In the embodiment, as shown in FIG. 5, a body 6 made of resin and a cover 7 made of resin are provided. As shown in FIGS. 4 and 5, the body 6 has a pair of terminal accommodating portions 8 formed at one end of the housing, a rotor support cylinder 9 formed at substantially the center, and a lamp pin insertion escape portion at the other end. 10 are formed. An electric wire insertion hole 11 and a connecting projection 12 are formed on the side wall where the terminal housing 8 is provided, and a split 13 and a circumferential groove 14 for providing elasticity are formed on the support cylinder 9. The cover 7 is a housing of a lid that covers the body 6,
It has an electric wire insertion hole 15 aligned with the electric wire insertion hole 11, a connection hole 16 fitted into the projection 12, a substantially circular opening 4 facing the support cylinder 9, and a lamp pin insertion groove 5 located in the lamp pin insertion escape part 10. . The periphery of the opening 4 has a receiving step.
17 is a socket mounting leg.

The rotor 2 has a guide groove 21 on the front surface thereof, which is rotatably provided in the opening 4 and communicates with the lamp pin insertion groove 5 to guide the lamp pin 20. In the embodiment, the disk portion 22 is formed by a substantially prismatic cylindrical portion 23 provided at the center thereof, and the guide groove 21 is formed to extend over the disk portion 22 and the cylindrical portion 23. The cylindrical portion 23 is fitted externally to the support cylinder 9, has an inner flange 24 engaged with the peripheral groove 14, a peripheral edge of the disk portion 22 is engaged with a receiving step of the opening 4, and the The cover 7 is fixed to the body 6 via the.

The lamp pin contact 3 is disposed in the socket body 1 and extends from the lamp pin insertion groove 5 to the guide groove 2.
By rotating the lamp pin 20 inserted in 1 with the rotor 2, the lamp pin 20 comes into contact with the lamp pin contact 3. The lamp pin contact 3 has a projection 27 extending toward the lamp center axis, that is, the direction of the rotation center of the rotor 2.
Having. In the embodiment, the terminal is a lamp pin connection terminal provided with a terminal, which is formed by a pair of band-shaped spring-like conductive plates. Is formed, and the whole is bent in an arc shape, the convex portion 27 is bent in an approximately U-shape at the approximate center, and the tip 3a at the other end is folded back in the opposite direction. FIG. 4 shows the mounted state of the lamp pin contact 3, in which the quick-connecting terminal portion 28 is positioned and stored in the terminal storing portion 8, and the other end is fitted in the receiving concave portion 30 formed in the body 6. In this state, the convex portion 27 faces the support cylinder 9 and is located on an axis passing through the center of the rotor 2 and orthogonal to the guide groove 21. When the lamp pin contact 3 is supported at both ends as described above, the convex portion 27 is provided at a position where the deflection can be taken most, which is advantageous for deformation (set) of the lamp pin contact 3. is there.

The rotor 2 has a pair of first protrusions 32 that climb over the protrusions 27 when the lamp is mounted and rotated, and a pair of second protrusions that are shifted in the rotation direction with respect to the first protrusions 32. These have a portion 33 which, when the lamp pin 20 is inserted and the rotor 2 is rotated, does not extend until the first projection 32 climbs over the projection 27 of the lamp pin contact 3.
And the lamp pin contact 3 do not come into contact with each other, and the first projection 32 crosses over the projection 27 of the lamp pin contact 3 and the second projection 33
Are made to contact each other until they get over, and do not come into contact when the second projection 33 gets over the projection 27 of the lamp pin contact 3.

In this case, the first convex portion 32 and the second convex portion 33 use the corners of the substantially prismatic cylindrical portion 23.
Further, a concave portion 34 into which the convex portion 27 is fitted is provided substantially at the center of the first convex portion 32 and the second convex portion 33 in one rotation direction of the rotor 2.

FIG. 1 shows a position where the rotor 2 starts mounting the lamp or a position where the rotor is removed. At this time, the guide groove 21 and the lamp pin insertion groove 5 are aligned, and the lamp pin 20 can be removed from the guide groove 21 through the lamp pin insertion groove 5. Conversely, the lamp pin 20 can be inserted from the lamp pin insertion groove 5 into the guide groove 21, and the lamp can be mounted. In addition, the rotor 2 has a convex portion 2 of the lamp pin contact 3.
7 is fitted into the concave portion 34 and the positioning is stopped.

FIG. 2 shows a state where the lamp 25 is rotated by about 45 degrees from the position of FIG. 1 where the lamp pin 20 is inserted.
Is in a state where the lamp pin 20 elastically comes into contact with the inner surface of the arc-shaped lamp pin contact 3 when the convex portion 32 of the lamp pin 20 climbs over the protrusion 27 of the lamp pin contact 3 against its elasticity.

FIG. 3 shows a state rotated about 90 degrees from the position shown in FIG. 2, a state in which the lamp pin 20 has passed over the projection 27, the lamp pin 20 remains in contact with the lamp pin contact 3, and the lamp pin contact The lamp pin 20 is held on the lamp pin contact 3 by frictional engagement due to the elasticity of the lamp pin 3. When the rotor 2 is further rotated in the same rotation direction, that is, clockwise from this state, the second convex portion 33 rides over the convex portion 27, and the lamp is turned off in the lamp attaching / detaching state of FIG. Alternatively, when the rotor 2 is rotated counterclockwise, the lamp pin 20 and the first concave portion 32 ride over the convex portion 27, and
State.

A second embodiment of the present invention will be described with reference to FIG. That is, in the first embodiment, the lamp socket is provided with the projection 27 of the lamp pin contact 2 almost at the center between the second projection 33 and the first projection 32 of the rotor 2.
Is provided with a concave portion 35 in which is fitted. Therefore, the concave portion 3 into which the convex portion 27 of the lamp pin contact 2 is fitted substantially at the middle of each of the first convex portion 32 and the second convex portion 33 of the rotor 2.
4 and 35 are provided. The projection 27 of the lamp pin contact 2 is provided at a position where the lamp pin 20 does not engage. That is, the protrusion 27 is formed in a range of about half of the plate width of the lamp pin contact 3 that the lamp pin 20 does not reach, and the recesses 34 and 35 are formed in a range of about half of the axial direction of the cylindrical portion 23 of the rotor 2. I have. Reference numeral 36 denotes a mounting slit to the socket mounting plate.

In this embodiment, when the lamp pin 20 is in contact with the lamp pin contact 3, the projection 27 is
Can prevent the rotor 2 from accidentally rotating due to vibration or the like. Further, the inner surface of the lamp pin contact 3 can be slid on without the lamp pin 20 getting over the convex portion 27. Others are the same as in the first embodiment.

In each of the above embodiments, the rotor 2 is rotated clockwise. However, when the rotor 2 is rotated counterclockwise to mount a lamp, the second protrusion 33 is not provided with the first protrusion. This corresponds to the projection 32.

[0030]

According to the lamp socket according to the first aspect, the lamp mounting is completed because the lamp mounting is completed with a feeling that is sufficiently small than 90 degrees when the lamp is mounted. In addition, since the protrusion of the rotor is mounted over the lamp pin contact by elastically deforming the protrusion of the lamp pin contact, it is possible to prevent the lamp from falling and prevent unstable contact. Even if it is accidentally rotated too much, it is still in contact, and it needs to be rotated again to the position where it is removed, so that safety against contact is high.

According to the lamp socket of the second aspect,
In addition to the same effects as those of the first aspect, since the rotor does not rotate carelessly in a state where the guide groove is aligned with the lamp pin insertion groove, insertion of a new lamp pin becomes easy.

According to the lamp socket of the third aspect,
In addition to the same effects as those of the first aspect, the rotation of the rotor due to vibration or the like can be prevented by fitting the concave and convex portions while the lamp pin is in contact with the lamp pin contact.

According to the lamp socket of the fourth aspect,
There is an effect similar to that of the second or third aspect.

According to the lamp socket of the fifth aspect,
In addition to the same effects as those of the first aspect, the operability is facilitated because the lamp pin does not need to climb over the convex portion of the lamp pin contact.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention, showing a position of a rotor at a lamp attaching / detaching position, with a lamp socket cover removed.

FIG. 2 is a front view of a state where a cover of a lamp socket is removed in a lamp mounted state where a rotor is rotated from FIG. 1;

FIG. 3 is a front view of a state in which a cover of a lamp socket is removed in a state where a lamp pin has passed over a convex portion of a lamp pin connection terminal.

FIG. 4 is a front view of the lamp socket with a cover removed.

FIG. 5 is an exploded perspective view.

FIG. 6 is an external perspective view of a lamp socket.

FIG. 7 is a perspective view of the lamp socket as viewed from the rear side.

FIG. 8 is a sectional view of a lamp socket.

FIG. 9 is an exploded perspective view of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket main body 2 Rotor 3 Lamp pin contact 4 Opening 5 Lamp pin insertion groove 20 Lamp pin 21 Guide groove 27 Convex part 32 First convex part 33 Second convex part 34 Recess 35 Recess

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiro Kimura 7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi National Lighting Co., Ltd. (72) Inventor Satoshi Uehara 7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi Na (72) Inventor Tetsuya Matsumoto 7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi National Lighting Corporation (72) Inventor Atsushi Sato 7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi National Lighting (72) Inventor Tomoyuki Ono 7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi National Lighting Co., Ltd. F-term (reference) 5E024 BB02 BB10

Claims (5)

[Claims] 1. A socket body having an opening in the front surface and having a lamp pin insertion groove communicating from the outer edge to the opening, and a lamp pin rotatably provided in the opening and communicating with the lamp pin insertion groove. And a lamp pin contact provided in the socket body, and the lamp pin inserted into the guide groove from the lamp pin insertion groove is rotated together with the rotor. Thereby, in the lamp socket for a straight tube fluorescent lamp in which the lamp pin contacts the lamp pin contact, the lamp pin contact has a convex portion toward a lamp central axis direction, and the rotator has a lamp mounted. A pair of first projections and a pair of second projections that climb over the projections during rotation for inserting the lamp pins, When rotating the lamp pin contact, the lamp pin and the lamp pin contact do not contact each other until the first projection climbs over the projection of the lamp pin contact, and the first projection is the projection of the lamp pin contact. A lamp socket, wherein the contact is made until the second convex portion gets over the second convex portion and the second convex portion does not come in contact with the second lamp portion when the second convex portion gets over the convex portion of the lamp pin contact. 2. The method according to claim 1, wherein the first convex portion of the rotor and the second convex portion are provided.
2. The lamp socket according to claim 1, further comprising a concave portion in which said convex portion of said lamp pin contact fits substantially at a center of said convex portion. 3. The rotor according to claim 2, wherein the second convex portion of the rotor and the first
2. The lamp socket according to claim 1, further comprising a concave portion in which said convex portion of said lamp pin contact fits substantially at a center of said convex portion. 4. The method according to claim 1, wherein the first protrusion of the rotor and the second protrusion are provided.
2. The lamp socket according to claim 1, wherein a concave portion is provided at substantially the middle of each of the convex portions of the lamp pin contact to which the convex portion of the lamp pin contact fits. 5. The lamp socket according to claim 1, wherein the projection of the lamp pin contact is provided at a position where the lamp pin does not engage.