JP3260802B2 - Discharge tube socket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge tube socket for mounting a discharge tube such as a hot cathode fluorescent lamp used for OA equipment and the like.

[0002]

BACKGROUND OF THE INVENTION There are also show in FIG. 8 as a socket for a conventional discharge tube. F The discharge tube socket, electrodes are arranged in the discharge tube (hereinafter, FL hereinafter) 7 ends on the circumference of
It is a socket for L, and its electrode part is attached in such a manner that it partially enters the main body 30. Further, the mounting of the discharge tube socket (hereinafter simply referred to as the socket) is performed by positioning and screwing the protrusion 30a. In the figure, 30
Denotes a main body, 31 denotes a contact piece, 32 denotes a lead wire, and 33 denotes a screw hole.

[0003]

However, in the above-mentioned conventional discharge tube socket, the electrodes (caps) at both ends of the FL are attached in a twisted state, and the position of the electrodes varies. Since there is no adjusting means for correcting the variation in the position of the member for mounting the socket, it is difficult to position the socket at a regular position with a certain degree of accuracy. Even if only one side of the socket is mounted in a normal state, the other side may become unstable (no click).

[0004] Further, since a mechanism for adjusting the light emission direction of the FL is not provided, when the FL is oriented in an appropriate direction, the socket and the FL are brought into a normal state (a state where both sockets have a click). Is difficult to perform, and it takes time. Further, from the viewpoint of miniaturization of the FL-mounted device, it has been desired to improve the shape of the socket in order to reduce the length in the FL longitudinal direction. Therefore, the present invention solves the above-mentioned conventional problems, and can easily set the sockets and the FLs at both ends of the FL to a normal state, respectively.
The light emission direction of can be easily adjusted and set,
It is another object of the present invention to provide a discharge tube socket in which the size of the FL and the socket in the longitudinal direction is reduced.

[0005]

SUMMARY OF THE INVENTION The gist of the present invention is that a discharge tube provided with input electrodes on the peripheral surfaces of the bases at both ends is fitted and supported at both ends, and the discharge tube is connected to the input electrodes. In a discharge tube socket having a contact piece having a positioning portion for supplying a current and positioning the discharge tube at a regular position, a pair of the discharge tube sockets are fixed to face each other.
Two side plates for supporting the discharge tube,
The discharge tube socket of the outer side when fixed to the side plates
It has a two-sided plate with a front plate serving as an end and a back plate serving as an inner end.
The contact piece is disposed between the two side plates, and the outer ends of both the discharge tube sockets are substantially flush with both end surfaces of the discharge tube, or are disposed inside the both end surfaces of the discharge tube. In order to be able to do so, a through hole through which the end of the discharge tube penetrates is provided in the front plate,
U has a circular arc portion at the bottom on which the tube wall of the discharge tube can slide.
A groove is formed, and the two side plates are
Adjustment hole of the size that can adjust the light emission direction of the electric tube
Is to have . In the socket,
The center of the arc portion of the U-shaped groove coincides with the rotation center of the discharge tube.
I am doing it.

[0006]

Therefore, when the discharge tube (FL) is inserted into the socket and is slid left and right along the arc-shaped sliding portion of the U-shaped groove and rotated, the positioning portion sets the discharge tube to a proper position. . And since the adjustment hole of the side plate is provided in a large size, even after the discharge tube is set at a regular position by the positioning portion, the light emission of the discharge tube has directivity, or the discharge tube or the socket is molded. If there is variation,
By rotating the discharge tube and the socket together (while keeping the discharge tube in the correct position with respect to the socket),
The position of the discharge tube can be adjusted, and the lateral width of the device can be substantially set within the length of the discharge tube, so that downsizing can be achieved. The center of the arc of the U-shaped groove is the center of rotation of the discharge tube.
The discharge tube is simply inserted into the socket.
Simply insert and rotate to position the fitting with the contact piece.
You.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 7 , caps 7a and 7b at both ends of an FL (a fluorescent lamp is used as an example of a discharge tube in this embodiment) 7 are attached to sockets 1 and 2, respectively. The flathead screws 3 and 4 and the nut members 5 and 6 are attached to the side plates 8 and 9 so as to face each other .

The socket 1 (and 2) has, for example, a box-shaped main body 10 and contact pieces 14 and 1 as shown in FIG.
The contact pieces 14 and 15 have positioning portions 14a and 1 for setting the FL7 at a regular position.
5a is provided, and the respective lead wires 16 and 17 are connected. The main body 10 is formed of plastic, for example, melamine phenol or the like.
A plate portion (surface plate), as shown in FIG. 3, the through hole 10a of the die 7a of FL7 penetrates is also the back side of the plate portion
As shown in Figure 4 (the back surface plate), arcuate U-shaped groove 10b is sliding portion are respectively provided, these tables faceplate and back
Hole 1 for countersunk screws through which countersunk screws 3 and 4 pass through the face plate
2 and 13 are provided. As shown in FIG. 5, the contact pieces 14 and 15 are made of an elastic material, for example, phosphor bronze, and supply a current to the FL 7 in a state where the base 7a of the FL 7 is set (fitted). At the same time, the FL is mechanically held.

As shown in FIG. 6 (a cross-sectional view of the state when the FL is set and viewed from the direction A shown in FIG. 1), the side plate 8 has a relief hole 8a used when the FL 7 is set, and a plate. Adjustment holes 8b and 8c for adjusting the position when the screw 3a and the not-shown 3b are passed are provided. Reference numeral 5 denotes a retaining plate serving as a nut, as described above. On the other hand, the side plate 9 is the same, but the adjustment holes 9b and 9c (not shown) are smaller than the adjustment holes 8b and 8c, and are slightly larger than just passing through the flathead screw 4a and the not-shown 4b. The reason why the adjustment holes 9a and 9b are not formed as nuts is that the adjustment range of only the side plate 8 may be insufficient.

As shown in FIG. 7, the FL 7 is provided with electrodes 7a ₁ , 7a ₂ , 7b ₁ , 7b ₂ on the bases 7a and 7b at both ends, as shown in FIG. , straight opposite electrode 7b ₁ connecting the electrodes 7a ₁ and 7a ₂ and 7
Although it is parallel to the straight line connecting the b ₂ is desired, the mounting variations in twist and electrodes FL7 tube, these lines are at an angle of ± 3 ° position. Further, the arrangement of the sockets 1 and 2 in the FL7 longitudinal direction will be described. The side plates 8 and 9 are such that the outer ends 1a and 2a of the sockets 1 and 2 respectively correspond to both ends 7c and 7 of the FL7.
It is arranged so as to be on or substantially inside the same plane as d. With such an arrangement, an exterior cover or the like can be provided in a shape facing (contacting) both ends 7c and 7d of FL7. In the above configuration, first, the socket 2 is fixed to the side plate 9 with flathead screws 4a and 4b, while the socket 1 is temporarily fastened with flathead screws 3a and 3b. Then, FL7 is set in sockets 1 and 2, and flathead screw 3a
When the socket 1 is rotated right and left around the center of the FL7 while the sockets 3 and 3b are loosened, the electrodes 7a of the FL7 are rotated.
₁ and 7a ₂ are positioning portions 14a of the contact pieces 14 and 15
And 15a, whereby the FL7 is set in a proper position. At this time, since there is a click feeling, FL
7 is stopped, and the flathead screws 3a and 3b are tightened and fixed. As described above, when the FL7 is rotated with respect to the sockets 1 and 2, the FL7 can be rotated so as to slide on the semicircular portion at the bottom of the U-shaped groove 10b .
FL7 is supported by this and can be rotated in a stable manner. At this time, the center of the semicircular portion at the bottom of the U- shaped groove 10b is the center of FL7 and the center of the line connecting the positioning portions 14a and 15a of the contact pieces 14 and 15.

Next, a case where the FL7 has an aperture and has directivity in light emission will be described. First, the countersunk screws 3a, 3b, 4a, 4b are loosened, and F
Insert L7 into sockets 1 and 2, rotate it left and right, and set it to a position where there is a click feeling. And
FL7 is aligned with the light emission direction. That is, FL (not shown)
When an operation such as aligning the aperture edge of the mark 7 with the position of the mark is performed, the sockets 1 and 2 rotate together with the FL 7 because they are not fixed. At this time, sockets 1 and 2 are
It rotates about the center of L7 as a rotation center. With the alignment completed, the flathead screws 3a, 3b, 4a, 4b are tightened to fix the sockets 1 and 2. When the light emitting directions are adjusted in this way, the adjustment holes 9a and 9b (not shown) in the side plate 9 are smaller than the adjustment holes 8a and 8b, but need to be large enough to satisfy the adjustment range. There is.

[0012]

As described above, since the socket is provided with the arc-shaped sliding portion and attached to the side plate having the adjusting hole for adjusting the position, the electrodes at both ends of the discharge tube are twisted with each other, Even if there is a variation in the position of the member to which the lamp is attached, the socket can be rotated around the center of the discharge tube and fixed at the correct position, so that the discharge tube can be set in a stable state both electrically and mechanically. Can be performed. In addition, even when the light emission of the discharge tube has directivity, the socket can be fixed after the discharge tube and the socket are kept in a regular positional relationship, and the light emission direction is determined by rotating the discharge tube and the socket together. The direction of light emission of the discharge tube can be adjusted, and the discharge tube can be stably set in the socket. In addition, since the through hole for the discharge tube is provided in the socket, the length of the discharge tube in the longitudinal direction can be slightly shortened, and an exterior cover or the like can be provided facing both ends of the FL. , FL can be downsized.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an arrangement of a discharge tube socket according to an embodiment of the present invention.

FIG. 2 is a top view of a discharge tube socket showing an embodiment of the present invention.

FIG. 3 is a side view showing a discharge tube socket showing an embodiment of the present invention.

FIG. 4 is a sectional view as seen from the direction of arrow A in FIG.

FIG. 5 is a sectional view showing a VV section in FIG. 2;

FIG. 6 is a sectional view showing a section d in FIG. 1;

FIGS. 7A and 7B are explanatory diagrams showing a discharge tube (FL).

FIGS. 8 (a), (b), and (c) are three views showing a conventional discharge tube socket.

[Explanation of symbols]

 1, 2 discharge tube socket 3, 4 flat head screw 7 discharge tube (FL) 7a, 7b base 8, 9 side plate 8b, 8c, 9b, 9c adjustment hole 10a through hole

Claims (2)

(57) [Claims] 1. A discharge tube having input electrodes provided on the peripheral surfaces of the bases at both ends is fitted and supported at both ends, a current is supplied from the input electrodes, and the discharge tube is positioned at a regular position. In a discharge tube socket having a contact piece having a positioning portion for positioning, a pair of discharge tube sockets face each other.
Two side plates supporting the discharge tube fixed to the
When the pair of discharge tube sockets are fixed to the side plates
A front plate as an outer end and a two-sided plate as a back plate as an inner end
Having, said contact piece is disposed between said double-sided plate,
Since the outer ends of both the discharge tube sockets are substantially flush with the both end surfaces of the discharge tube or can be arranged so as to be inside the both end surfaces of the discharge tube, the front plate has the end portions of the discharge tube. Is provided with a through hole through which the back plate
Has a circular arc at the bottom where the tube wall of the discharge tube can slide
A U-shaped groove is formed, and the two side plates have
Adjustment of the size of the range in which the light emission direction of the discharge tube can be adjusted
A discharge tube socket having a hole . 2. The arc tube of the U-shaped groove is centered on the discharge tube.
2. The rotation center according to claim 1, wherein:
For discharge tube.