JP2000354212A - Drive substrate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with the use of any sockets by a single printed wiring board by at least partially overlapping socket mounting parts for a thick neck and for a thin neck with the center part of the printed wiring board in a rectangular shape. SOLUTION: For the printed wiring board 17 in the rectangular shape for which a prescribed circuit pattern is arranged on a back surface, a through-hole 18 for inserting the exhaust part of a cathode-ray tube is provided on the almost center part and a tongue piece 19 integrated with the printed wiring board 17 is arranged at the through-hole 18 so as to close the part of the through-hole 18. At the part of the outer peripheral printed wiring board 17 of the through- hole 18, pin holes 20 for inserting plural socket pins for the thin neck are annularly pierced and the socket mounting part 9 for the thin neck is formed. Further, at the outer periphery of the pin holes 20, the pin holes 21 for inserting the socket pins for the thick neck are annularly pierced similarly and the socket mounting part 8 for the thick neck is formed. The respective pin holes 20 and 21 are pierced so as to be positioned at a prescribed circuit pattern part on the back surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to 14, 20, and 2
A drive board device incorporating a socket and a circuit for a cathode ray tube for driving a cathode ray tube such as a picture tube or a display tube for a television receiver of 1 inch or the like,
In particular, the present invention relates to a drive board device for a cathode ray tube which is designed to be compatible with mounting of any of the sockets for the narrow neck cathode ray tube and the mini neck cathode ray tube in these cathode ray tubes.

[0002]

2. Description of the Related Art Conventional cathode ray tubes of 14, 20 and 21 inches are not standardized, and the manufacturing method is different for each cathode ray tube manufacturer in Japan, Europe, the United States or Southeast Asia. In the cathode ray tube, for example, not only a cathode ray tube having a large diameter called a thick neck tube and a cathode ray tube having a small diameter called a thin neck tube coexist, for example, the difference in the diameter also causes the cathode ray tube stem to be reduced. The derived pin arrangement is also different. Since set manufacturers of television receivers and displays procure cathode ray tubes from different cathode ray tube manufacturing manufacturers in all countries, even if the same 20-inch television receiver model is manufactured, this set is required. As described above, the thick neck tube and the narrow neck tube are mixed and supplied, so that the drive board device of the cathode ray tube prepares two kinds of boards in advance according to each specification,
The actual situation is that the drive substrate device is selectively used at the manufacturing site in accordance with the cathode ray tube of each diameter.

[0003]

In a conventional cathode ray tube drive board device, a dedicated drive board device is prepared for each of a thick neck tube and a thin neck tube, and the drive board device is prepared according to the type of the cathode ray tube to be used. They used different drive board devices. For this reason, low prices are required for the 14, 20, and 21-inch class sets, so preparing two types of dedicated drive board devices in this way means an increase in cost per se. Was not a preferred method. In addition, the use of drive board devices having different specifications may cause erroneous delivery in a production line, which requires not only trouble in sorting on the line but also the risk of erroneous use.

[0004] From such a point, it has been attempted to arrange a plurality of cathode ray tube sockets on the same substrate.
Not only the difference in the diameter of the cathode ray tube but also the pin arrangement of the socket was different, so it could not be easily solved.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a predetermined pattern is provided.
And a first socket mounting portion for mounting a large neck cathode ray tube, comprising a rectangular printed wiring board on which wiring is provided, and a plurality of pin holes which are arranged in a ring shape in the center of the wiring board and located in the pattern portion. And a plurality of pin holes which are arranged in a ring in the center of the printed wiring board so as to partially overlap the first socket mounting portion and are located in the pattern portion. 2 socket mounting portions.

A thick neck or narrow neck cathode line comprising an arspin housing portion in which a pin insertion hole and a socket pin are annularly arranged in a cylindrical socket body, and are attached to the socket body so as to protrude outward. Pipe socket,
It is mounted on the first or second socket mounting portion.

[0007] Further, an outer shape display portion is printed at a position corresponding to the outer edge of the thick neck and thin neck cathode ray tube mounting socket on the surface of the printed wiring board, and the first and second outer shape display portions are crossed with each other. A second socket mounting portion is provided.

Further, a circuit component group for common use of a thick neck and a thin neck cathode tube is disposed on a portion of the printed wiring board opposite to the a-spin housing portion of the first and second socket mounting portions, and the non-mounted third and fourth socket portions are not mounted. At least one of circuit elements for a thick neck or a thin neck cathode ray tube is arranged on a surface of a part of the service pin housing portion of the first or second socket mounting portion.

[0009]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram schematically showing a drive board device to which the present invention is applied. A socket 10 for a thick neck cathode ray tube has a plurality of cathode ray tubes (not shown) formed on one end surface side of a cylindrical socket body 11. A) a pin insertion hole 12 which is electrically connected or integrally formed in the pin insertion hole 12 and which is drawn out from the outer surface thereof and which faces the other side of the socket body 11 in a direction opposite to the axial pin insertion hole 12; A plurality of pins 13 arranged to protrude are arranged. A through hole 14 for accommodating the exhaust portion of the cathode ray tube is provided at the center of the socket body 11, and a rectangular artspin housing 15 is attached in a direction perpendicular to the axial direction of the socket body 11 to make A neck socket 10 is configured. On the other hand, the thin neck socket 16 is also configured in the same manner, and has almost the same configuration as the thick neck socket 10. Therefore, the same parts are denoted by the same reference numerals with dashes, and detailed description thereof is omitted. I do.

The printed wiring board 17 to which either the thick-neck or thin-neck sockets 10 and 16 having such a configuration is attached will be described.
The rectangular printed wiring board 17 in which the components are arranged is provided with a through hole 18 at a substantially central portion into which the exhaust portion of the cathode ray tube is inserted. The through hole 18 is formed so as to cover the through hole 18. A tongue piece 19 integrated with the printed wiring board 17 is disposed at the bottom. When the exhaust portion is long, the tongue piece 19 is cut to have only the through hole 18, and when the exhaust portion is short, it is left as it is. A pin hole 20 for inserting a plurality of socket pins for a thin neck is formed in an annular shape in a portion of the outer peripheral printed wiring board 17 of the through hole 18 to form a socket mounting portion 9 for a thin neck. Further, a pin hole 21 for inserting a socket pin for a thick neck is similarly formed on the outer periphery of the pin hole 20.
Are formed in an annular shape to form a thick neck socket mounting portion 8. These pin holes 20 and 21 are formed so as to be located at predetermined circuit pattern portions on the back surface. The pin holes 21, 21 have a shape corresponding to the outer edges of the sockets 10, 16 for the thick neck and the thin neck.
The socket bodies 11, 11 'along the outer circumference of the "0", and the arc-spin storage portions 15, 15' protruding from this portion.
Are indicated by broken lines on the surface of the printed wiring board 17 respectively.
Printed as 2 '. The external display units 22, 22
′ Are respectively provided with pin holes 20 and 21 so as to intersect each other. The printed wiring board 17 on the opposite side of the outer display portions 22 and 22 ′ from the a-spin storage portions 15 and 15 ′ is provided with: Mainly, a circuit element group such as a transistor 23, a diode 24, a resistor 25, and a capacitor 26 common to a thick neck and a thin neck is arranged. Other printed wiring boards 1
At a predetermined position 7, a common same-type circuit element or a circuit element 27 for a thick neck or a thin neck is arranged. Since either the thick neck socket 10 or the thin neck socket 16 is inserted and connected to the printed wiring board 17, a circuit element 27 corresponding to the socket is selected and arranged and connected at a predetermined position.

FIG. 2 is a plan view showing the plane of the printed wiring board 17, and the same portions as those in FIG. 1 are denoted by the same reference numerals and detailed description thereof will be omitted. In addition to the components shown in FIG. 1, circuit components such as the semiconductor integrated circuit 28 and jumper wires 29 are actually arranged and connected on the printed wiring board 17. The arrangement of the pin holes 20 of the thin neck socket in the figure shows that KG,
G2, KR, G1, H, H, KB, and the arrangement of the pin holes 21 of the thick neck socket is KB, H, H, KR, G
2, KG and G1, and it is apparent that the pin arrangement is clearly different. Note that KG is a green cathode and KR is
Indicates a cathode for red, KB indicates a cathode for blue, and H indicates a heater. Further, in the portion covered by the broken line at the lower left in the figure, circuit components such as a semiconductor integrated circuit for narrow neck, a capacitor, and a jumper wire used when the socket 16 for thin neck is mounted on the printed wiring board 17 are mounted. In part,
On the other hand, the portion covered by the broken line at the lower right is the portion where circuit components such as a semiconductor integrated circuit for thick neck, capacitors, jumper wires and the like used when the socket 10 for thick neck is mounted on the printed wiring board 17 are mounted. Is shown. As can be seen from this figure, when the narrow neck socket 16 is used, a part of the circuit component for the narrow neck is arranged in a portion where the a-spin storage portion of the socket for the thick neck is located. The space efficiency of the plate 17 is increased, and when a socket for a thick neck is mounted, the space efficiency at the tip portion or the like is utilized to improve the wiring efficiency.

FIG. 3 is a circuit pattern on the back surface of the printed wiring board 17.
FIG. 2 is a pattern diagram showing an outline of an example of the pin 30. In the pin arrangement of the thick neck and the thin neck, the pattern that can be shared is shared as much as possible, and the pattern of the pin that cannot be shared is as small as possible in the socket mounting portion. The positions of the socket mounting portions 8 and 9 are set to be substantially the same, though the angle is changed, by processing according to the pattern arrangement in the portions 8 and 9. When the primary color signal is supplied to the cathode, the heater H, the first and the first signals are used.
Since the second grids G1 and G2 apply the same potential bias to all three electrodes of red, blue and green, there is no problem in the actual operation even if the positions of the three primary color electrodes are different within the same electrode.

Note that the present invention is not limited to the above-described embodiment, and other applications and modified configurations are possible as long as the objects of the present invention can be achieved.

[0014]

According to the present invention, even in the same inch size cathode ray tube, the same printed wiring board can cope with both the large neck and the small neck sockets having different diameters. Not only can it be constructed inexpensively, but also it is not necessary to prepare a plurality of different printed wiring boards in the production process, so that there is no need to increase the care and man-hours of the board, and it is possible to prevent misuse and the like. Further, by considering the arrangement of the socket mounting portion, it is possible to provide a drive board device with an improved space factor.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a drive board device according to the present invention;

FIG. 2 is a plan view showing a printed wiring board constituting the drive board device of the present invention;

FIG. 3 is a pattern diagram showing an example of a back circuit pattern of the printed wiring board shown in FIG. 2;

[Explanation of symbols]

 8: Socket mounting section for thick neck 9: Socket mounting section for thin neck 10: Socket for thick neck 15, 15 ': A-spin storage section 16: Socket for thin neck 17: Printed wiring board 20, 21: Pin hole 22 ： Outline display 30 ： Pattern

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[Procedure amendment]

[Submission date] July 12, 1999 (1999.7.1)
2)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

Claims (4)

[Claims] 1. A thick neck cathode wire comprising a rectangular printed wiring board on which a predetermined pattern is wired, and a plurality of pin holes arranged in a ring at the center of the wiring board and located at the pattern portion. A first socket mounting portion for mounting a pipe;
A second socket for mounting a fine neck cathode ray tube, comprising a plurality of pin holes arranged in a ring at the center of the printed wiring board so that at least a part thereof overlaps with the socket mounting portion. A drive board device comprising a mounting portion. 2. A thick neck or a thin neck comprising an a-spin housing portion having a pin insertion hole and a socket pin arranged in a ring shape in a cylindrical socket body and attached to the socket body so as to protrude outward. 2. The drive board device according to claim 1, wherein a socket for mounting a cathode ray tube is mounted on the first or second socket mounting portion. 3. An outer shape display portion is printed at a position corresponding to the outer edge of the thick neck and thin neck cathode ray tube mounting socket on the surface of the printed wiring board, and the first outer shape display portions are printed so as to intersect each other. 3. The drive board device according to claim 1, wherein a second socket mounting portion is disposed. 4. A circuit component group common to a thick neck and a thin neck cathode ray tube is disposed on a portion of a printed wiring board opposite to an a-spin housing portion of a first and a second socket mounting portions. 4. The drive board device according to claim 1, wherein at least one of a circuit element for a thick neck and a thin neck cathode ray tube is arranged on a part of the a-spin housing portion of the second socket mounting portion. .