JPH0785402B2 - Cathode ray tube device with built-in resistor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cathode ray tube device having a built-in resistor such as a color cathode ray tube.

[Outline of Invention]

According to the present invention, in a cathode ray tube device having a built-in resistor, the built-in resistor is arranged substantially along the axial direction of the electron gun other than the beading body on the side of the electron gun, that is, the portion where the beading glass is arranged. A through hole is drilled in the terminal part of the built-in resistor, and a conductive pin having a head part connected to the terminal part is inserted into this through hole. A conductive elastic holder is connected to the insertion end of this conductive pin. The holder is elastically contacted with the substrate of the built-in resistor and is directly bonded to a predetermined electron gun of the electron gun or the stem lead of this electron gun to electrically connect the built-in resistor and provide mechanical support. In order to ensure reliable electrical connection to a predetermined portion of the built-in resistor and stable mechanical support, it is possible to easily assemble and manufacture a highly reliable cathode ray tube device.

[Conventional technology]

Usually, in a color cathode ray tube such as a color picture tube or a color display device, a high voltage of 10 to several tens of kV is applied to a high voltage electrode, that is, an anode of an electron gun housed in the tube body. A focus voltage of about several kV is applied to the focus electrode, and the convergence voltage is applied to the deflection electrode of the convergence means for converging the electron beam corresponding to each station on the fluorescent surface of the cathode ray tube. It is necessary to apply a plurality of types of medium or high voltage such as application. It is not desirable to supply the middle or high voltage to these angular electrodes from the stem side derived from the base side of the electron gun, that is, the end of the neck portion of the cathode ray tube body, because of the problem of pressure resistance and the number of stem pins. Applying the anode voltage such as the fluorescent surface potential given from the funnel part to the anode of the electron gun and obtaining the required multiple middle or high voltage divided by the built-in resistor arranged in the tube, A cathode ray tube device having a built-in resistor adapted to apply these voltages to predetermined electrodes is widely used.

FIG. 15 is a configuration diagram of a main part including an electron gun of a conventional cathode ray tube, for example, a color cathode ray tube device. In this example, the electron gun (2) is arranged in the neck portion (1n) of the cathode ray tube body (1). This electron gun (2) is, for example, 3
The first grid G ₁ accommodating and arranging the cathodes of the book and the second grid G ₂ , the third grid G ₃ , the fourth grid G _4, and the fifth grid G ₅ are sequentially arranged coaxially with the first grid G ₁ . Convergence means (4) is arranged at the tip of the 5 grid G ₅ . This convergence means (4) has, for example, three electron beams corresponding to, for example, red, green and blue obtained from the cathode or coming from the cathodes by arranging two pairs of deflection electrode plates and passing through the grids G _{1 to} G _5. Are converged on the fluorescent surface formed on the inner surface of the face plate (1p) of the cathode ray tube (1) facing the electron gun (2).
Each of the electrodes G _{1 to} G ₅ is mechanically attached to a beading body (3), that is, a beading glass via support pins (not shown) welded to its peripheral surface, and is connected to each other in a predetermined positional relationship. To be done.

At the tip of the anode, that is, the fifth grid G ₅ , is an internal electric conductive film to which a high anode voltage supplied from an anode button (not shown) provided in the funnel portion (1f) of the tubular body (1) is applied. Multiple conductive springs (8) contacting (5)
Is provided to supply high voltage to the anode of the electron gun (2), that is, to the fifth grid G _{5, and} to apply voltage to a predetermined pair of deflection electrode plates of the convergence means (4). Has been done.

Further, (6) is a stem pin provided to penetrate the stem (7) of the tubular body (1), and the corresponding stem pin has, for example, each cathode of the electron gun (2) and heaters (not shown), The grid G ₁ , the second grid G _2, etc. are electrically connected to each other so that a predetermined voltage is applied to them and the electron gun (2) is mechanically supported.

In such a configuration, the built-in resistor (9) is provided along the electron gun (2). And this resistor (9)
The first terminal portion Ta of the fifth terminal to which the anode voltage is applied, for example.
It is connected to the grid G _5, and the required convergence voltage divided by the resistor (9) is supplied to the convergence means (4) by the second terminal portion Tb.

The built-in resistor (9) is formed by, for example, forming a resistor pattern (9B) having a predetermined pattern on an insulating substrate (9A) such as a strip-shaped ceramic substrate, on which an insulating coat (such as a glass coat) ( 9C) is coated. Then, for example, the second end Tb to be connected to the above-mentioned convergence means (4) at its front end and one side edge of the intermediate portion, and further connected to, for example, the fifth grid G ₅ of the electron gun (2). And a third terminal portion to be connected to the one stem pin (6) at the rear end, for example, a ground terminal Tc, and these terminal portions Ta to Tc are provided with an insulation coating ( 9C) is exposed to the outside. This resistor (9) is sandwiched by elastic metal pieces Mb and Mc bent in a U shape at the terminal portions Tb and Tc at both ends, and these elastic metal pieces are
Mb and Mc are welded to the above-mentioned convergence means (4) and stem pin (6), respectively, so that the low antibody (9) is mechanically held and electrically connected. However, in this case, both metal pieces Mb and Mc may cause a so-called stray or discharge due to application of a high voltage at the tip of the free end side that sandwiches the substrate (9A) and interfere with stable operation.

On the other hand, as in the case of the built-in resistor disclosed in, for example, Japanese Patent Application Laid-Open No. 61-147441, it has been proposed to provide a metal element penetrating the built-in resistor and use this as a terminal portion. The mechanical holding of the resistor is performed by tightening the wire, and in this case, there is a problem that the number of parts is large and the assembling and manufacturing thereof are complicated.

[Problems to be solved by the invention]

The present invention solves the instability of electrical connection and mechanical support of the above-mentioned built-in resistor with respect to the electron gun or the stem pin, the complexity of assembly and manufacturing, and the stable operation and high reliability of the cathode ray tube by simple assembly. To be able to manufacture.

[Means for solving problems]

According to the present invention, as shown in FIG. 1, a beading body (3) for connecting electrodes of an electron gun (2) is provided on a side portion of the electron gun (2) in an axial direction of the electron gun (2). Built-in resistors (9) that are provided substantially along with the electron gun (2)
In a cathode ray tube device having a built-in resistor provided with the built-in resistor, the built-in resistor (9) is provided on the axis of the electron gun (2) in addition to the beading body (3) arranged on the side of the electron gun (2). Arrange so that it is almost along the direction. As shown in the perspective view of FIG. 2, the built-in resistor (9) has first to third terminal portions Ta ...
Through holes h _{a to} h _c are formed in Tc, respectively. These through holes h
(H _a to h _c) in an exploded cross-sectional view, respectively Figure 3, as shown in the sectional view of the assembled state in Figure 4, the conductive conductive pin (12) to the insertion end of the insertion perilla (12C) Connect the holder (13).

As shown in FIG. 5, each conductive pin (12) has a terminal portion Ta ...
It has a head portion (12A) and a columnar portion (12B) that come into contact with Tc, respectively.

The conductive elastic holder (13) ((13a) to (13c)) is a back surface of the insulating substrate (9A) provided with the resistor pattern (9B) of the built-in resistor (9), that is, an electron of the substrate (9A). It has a contact portion that comes into elastic contact with the surface facing the gun (2), and a substrate 9A of the built-in resistor from the side portion of this contact portion.
To the side of the built-in resistor, and an abutment piece 24C that abuts the side of the built-in resistor, each terminal portion Ta to Tc should be connected respectively. A predetermined portion of the built-in low antibody (9) having a predetermined electrode of the electron gun (2) or a joint portion directly joined to the stem lead (6), and a conductive elastic holder corresponding to each of these terminal portions Ta to Tc. Electrical connection and mechanical support.

[Action]

According to the present invention described above, each terminal portion Ta of the built-in resistor (9) is
A conductive pin (12) having a head (12A) is passed through to Tc, and a conductive elastic holder (13) is attached to the insertion end (12C).
((13a) to (13c)) are combined, the holder (13) and the low antibody (9) terminals Ta to Tc are electrically connected well, and in this state Since the elastic holder (13) is connected to a predetermined electrode of the electron gun (2) or to the stem lead (6), the built-in resistor (9) can be mechanically supported reliably.

〔Example〕

An example of the present invention will be further described in detail with reference to FIGS. 1 to 14. In FIG. 1, portions corresponding to those in FIG. 15 are designated by the same reference numerals and duplicate description thereof will be omitted as much as possible.

Also in this example, the electron gun (2) has, for example, three cathodes (not shown) arranged in the first grid G ₁ , and
The fifth grids G _{1 to} G ₅ are sequentially arranged, and the convergence means (4) is provided at the tip thereof. Then, the fifth grid G ₅ also in this case, a high voltage is adapted to be applied through the conductive spring from internal conductive coating anode voltage of the high voltage is applied (5) (8). Terminal part
Each conductive elastic holder corresponding to Ta ~ Tc (13) ((13
Each of a) to (13c) can be formed by punching and pressing a metal plate.

As shown in FIG. 5, the conductive pin (12) has, for example, a circular head portion (12A) formed by cutting portions facing each other, or an elliptical or elliptical shape, and a vertical direction integrally with the head portion (12A). It may be formed by a metal body having, for example, a columnar portion (12B) having a columnar shape.

And each through hole of each terminal portion Ta to Tc of the built-in resistor (9)
The columnar portion (12B) of the conductive pin (12) is penetrated through h _{a to} h _c , respectively.

Each of the through holes ha to hc may be a through hole having a closed peripheral edge, or, as shown in FIG. 2, a keyhole-shaped through hole opened to the side edge of the substrate (9A) of the low antibody (9). Can also be

The built-in resistor (9) has a resistor pattern (9B) on a substrate (9A), and the first to third parts derived from predetermined portions of the resistor pattern (9B).
Each terminal Ta~Tc of the insulating coat such as glass coating (9C) is formed by deposition on top each through hole h _a to h _c periphery adapted to extend in the resistor pattern of (9B). This resistor (9) is provided on the side of the electron gun (2) so that the resistor pattern (9B) and the terminals Ta to Tc are arranged on the side opposite to the side facing the electron gun (2). It is arranged along the axial direction. The conduit pins (12) are inserted into the through holes h _{a to} h _c , respectively, so that the heads (12A) of the conduit pins abut the terminal parts Ta to Tc, respectively.
The insertion ends (1) of the columnar parts (12B) of the conductive pins (12) protruding from the sides of the through holes h _{a to} h _c facing the electron gun (2) respectively.
The conductive elastic holders (13a) to (13c) are joined to 2C) by welding or the like.

Although the conductive elastic holders (13a) to (13c) can be formed in different shapes, the contact portions elastically abutting against the substrate (9A) of the built-in low antibody (9) and the respective terminal portions Ta to.
The Tc is provided with a joint for directly joining, for example, welding, the electrode or the stem pin of the electron gun to be connected.

First, referring to FIG. 6 to FIG.
Conductive elastic holder subjected to coupling to the grid G ₅ (13
Explain a).

Fig. 6 shows a perspective view of the holder (13a), Fig. 7 shows a front view, and Fig. 8 shows a perspective view of a state of being attached to the resistor (9). recess being welded thereto is brought into contact abuts against the insertion end (12C) of the conductive pin penetrating the through hole h _a terminal portion Ta (12) by processing (22
a) and has a contact portion (23a) that elastically abuts on the back surface of the substrate (9A) in the periphery thereof, and is bent from one side edge thereof so as to be orthogonal to the contact portion (23a). (9
An abutment piece (2) adapted to abut the corresponding end face of (A).
And 4a), the engagement piece (25 subjected to blocking its center, for example, without the positioning and rotation of the insert engaged with the conductive elastic holder, for example, keyhole-shaped opening of the through hole h _a (13a)
a) is cut and raised inside, and on the other hand, a connecting piece (26a) is provided which is juxtaposed with the abutting piece (24a) and is bent and extends on the side opposite to the cut and raised side of the abutting piece (24a). Then the ends were welded along a peripheral surface of the corresponding electrode for example the fifth grid G ₅ of the electron gun (2) performing a mechanical and electrical connection of the connecting piece (26a).

The conductive holder (13b) for the second terminal portion Tb is shown in a perspective view in FIG. 9, a front view in FIG.
As shown in the attached state to the resistor (9) in the figure, a concave portion to be welded to the insertion end (12C) of the conductive pin (12) penetrating the through hole h _b at the center by the same single metal plate. (22b), the periphery of which has an abutting contact portion (23b) elastically on the back surface of the substrate (9A) of the built-in resistor (9) and one side edge of which corresponds to the substrate (9A). rotation of the abutment piece cut and raised in a substantially vertical direction so as to abut the end face and (24b), further inserted into a conductive holder, for example, keyhole-shaped opening of the through hole h _b in the center (13b) And an engaging piece (25b) for positioning, and a pair of connecting pieces (L-shaped) bent from the contact portion (23b) on both side edges adjacent to the edge portion having this abutting piece (24b). 26b ₁₎ and (26b ₂₎ and integrally formed, the electrode for example convergence of both connecting pieces (26b ₁₎ and (26b ₂₎ each predetermined electron gun (2) Mechanically and electrically connected by welding to the stage (4). The connection pieces (26b ₁ ) and (26b ₂ ) may be provided with projections (27) that improve the connection with the electrodes.

Furthermore, regarding the conductive holder (13c), its perspective view is shown in FIG. 12, FIG. 13 is its front view, and FIG. 14 shows the mounting state of the resistor (9) to the terminal portion Tc. , Has a recess (22c) that abuts against the insertion end (12c) of the conductive pin (12) and is welded thereto, and the peripheral edge is elastic to the back surface of the substrate (9A) of the built-in resistor (9). Contact part (23c) that is abuttingly connected, and the substrate (9A) of the resistor (9) on one side edge thereof.
The abutting piece (24c) bent at a right angle so as to abut the end face of the, and a notch is provided in the center of the abutting piece (24c), and the abutting piece (24c) is bent further inward. the engaging piece for preventing the positioning and rotation of the through-holes h _c of example keyhole and have been engaged therewith is inserted in the opening edge sealed conductive holder (13c) (25c) Te provided, further the opposition A connecting piece (26c) bent on the side opposite to the bending direction of the joint piece (25c) is integrally provided, and the connecting piece (26c) is abutted so as to be along the inner end of the corresponding stem pin (6). Welding.

In addition, any of the conductive elastic holders (13a) to (13c)
Each conductive pin (12) inserted in each through hole h _a ~ h _c
In the welding state with the insertion end (12c) of the
a), (23b) and (23c) are substrates (9) with built-in resistor (9)
The head (12A) of each conductive pin (12) is elastically abutted against the back surface of (A) so as to abut well with the corresponding terminal portions Ta to Tc.

〔The invention's effect〕

As described above, in the present invention, the terminal portions Ta to Tc of the built-in resistor (9) are made by the co-existence of the conductive pin (12) and the conductive elastic holders (13) to ((13a) to (13c)). Since the board (9A) is sandwiched between the conductive pins (1
The electrical contact between 2) and each terminal Ta to Tc is made surely and satisfactorily, and the conductive elastic holder (13) itself allows the substrate (9A),
That is, the built-in resistor (9) is coupled to and supported by the corresponding electrodes of the stem pin (6) and the electron gun (2), that is, the convergence means (4) and the fifth grid G ₅ in this example. Retention is also ensured.

As described above, according to the present invention, the built-in resistor (9) can be stably electrically and mechanically connected, so that a highly reliable cathode ray tube can be assembled and manufactured. The built-in resistor (9) is attached to the electron gun (2) in advance by attaching the conductive pin (12) and each conductive elastic holder (13) to the substrate (9A) of the built-in resistor (9). By attaching the conductive elastic holders (13) to the corresponding stem pin (6) or the electrode of the electron gun (2) by simply welding, the attachment can be performed. This greatly simplifies the assembly work.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of a cathode ray tube device having a built-in resistor according to the present invention, in which a part thereof is shown in section, FIG. 2 is a perspective view of the built-in resistor, and FIGS. 3 and 4 show conductive pins. FIG. 5 is a sectional view showing an attached state and an exploded state of an example of a conductive elastic holder, FIG. 5 is a perspective view of the conductive pin, and FIGS. 6, 9, and 12 are first, second, and third, respectively. Fig. 7, Fig. 10, Fig. 10 and Fig. 13 are front views of the conductive elastic holder of Fig. 8, and Fig. 8, Fig. 11 and Fig. 14 are perspective views showing the state of attachment to the built-in resistor. FIG. 15 and FIG. 15 are configuration diagrams of a conventional cathode ray tube. (1) is a tube, (2) is an electron gun, (6) is a stem pin,
(9) is a built-in resistor, (12) is a conductive pin, (13) ((13
a) to (13c)) are conductive elastic holders.

Claims (1)

[Claims] 1. A built-in beading body for connecting electrodes of an electron gun is provided on a side portion of the electron gun substantially along an axial direction of the electron gun, and a built-in resistor is provided in association with the electron gun. In a cathode ray tube device having a resistor, a built-in resistor is arranged substantially along the axial direction of the electron gun other than a portion where the beading body is arranged on a side portion of the electron gun, and the built-in resistor is A through hole is formed in an end portion, a conductive pin having a head portion connected to the terminal portion is inserted into the through hole, and a conductive elastic holder is coupled to an insertion end of the conductive pin. A contact portion that elastically contacts the substrate of the built-in resistor, and an engagement portion that projects substantially perpendicularly to the substrate side of the built-in resistor from a side portion of the contact portion and engages with a through hole of the built-in resistor. And an abutting piece that abuts on the side of the built-in resistor, and a predetermined part of the electron gun. A cathode ray tube device having a built-in resistor, which has a connecting piece for directly electrically connecting the electrode or the stem lead to electrically connect the built-in resistor and mechanically support the built-in resistor.