KR200164386Y1 - Electron gun for cathode ray tube - Google Patents

Abstract

In the heater support of the electron gun, which is designed to electrically connect and support the heater installed in the sleeve to the external inlet current in order to heat the electron emitting material to emit the hot electrons, the simplification of the parts, the process improvement, and the manufacturing cost reduction Of course, in order to realize easy assembly,

A first support member having one side fixed to the bead glass and the other side welded to one side lead of the one heater, and a second portion fixed to the bead glass while being welded to electrically connect the other two heater side leads to each other. It proposes a heater support of the electron gun, including a second support member, wherein the first and second support members are arranged and welded in reverse order so that the three heaters are connected in series.

Description

Heater support of electron gun

The figure shows the heater support of the electron gun which concerns on this invention, A front view seen from the stem part side.

* Explanation of symbols for main parts of the drawings

3,3a, 5,5a, 7,7a: Heater lid 9,9a: Bead glass

11,11a: first support member 13,13a: second support member

15,17: stem pin 19: connecting member

21: groove

[Industrial use]

The present invention relates to a heater support for an electron gun, and more particularly, to a heater support for facilitating coupling with a heater and facilitating dinization of parts.

[Prior art]

The heat dissipating cathode of the electron gun for the cathode ray tube, that is, the cathode structure, is provided with a heater inside a substantially tubular sleeve whose lower part is mounted by a holder, and the upper opening is covered with a cap-shaped base metal, while the upper side of the base metal is covered. It is configured to stack an electron emitting material of carbonate which emits hot electrons on the surface.

As a method for supporting the cathode of an electron gun having such a configuration, there are known methods known in the art, such as crystallization glass, that is, by an insulation support and a metal support, and the former is controlled by three cathodes bonded to the holder support. Supported in crystallization glass arranged in a substantially can-shaped case coupled to the electrode G1, the latter being embedded in the bead glass with the cathode supported by the holder support fixed to the metal support. will be.

Here, the crystallized glass, that is, the cathode installed inside the cup-shaped G1 electrode is fused and fixed to the bead glass together with the G1 electrode and G2, G3, and G4 electrodes for accelerating and concentrating a passion, and the heater and each electrode of the cathode The stem part for connecting the external input current to the body is integrally formed to form an electron gun.

The current drawn through the stem part heats the heater of the cathode to emit hot electrons contained in the electron emitting material, which is emitted toward the screen by one electron beam by acceleration and focusing action of the electron gun.

Here, the heater of the cathode is withdrawn in the sleeve while being received in the sleeve is welded to the heater tab of the approximately plate-shaped, the heater tab is welded and fixed to the heater support, the heater support is a stem portion for drawing an external current Is electrically connected to

[Problem trying to solve]

The heater support is divided into a series connection method and a parallel connection method according to the connection method with the heater, and the former known heater supporter is Korean Utility Model Publication No. 91-5186 (July 20, 1991) The latter heater support is described in Korean Utility Model Publication No. 89-7278 (October 25, 1989).

In particular, in the cathode that is installed in the conventionally known cup-shaped G1 electrode, the series connection method is composed of four parts of the heater support, the heater tab is configured to connect each heater support to each other, which is Not only is the manufacturing process complicated, but also many inconveniences such as mixing of parts during production.

In addition, the heater support, as well as the troublesome work of a plurality of parts even when welding and assembling the heater of the cathode, it is difficult to weld the heater to a predetermined precise position, resulting in a poor welding.

In addition, the heater support is welded integrally through the heater tab welded with the lead pulled out from the heater, which is performed by a plurality of parts formed separately for each, so that the work is not only complicated and difficult but also welded. There are problems such as the correction of the angle after the work due to the defect.

In view of the above-mentioned problems of the prior art, an object of the present invention is to provide a heater support for an electron gun which can simplify parts of a support to achieve improvement in manufacturing and assembly processes and productivity.

[Means to solve the problem]

In order to realize the above object, the present invention includes the following means.

That is, in the heater support of the electron gun provided to electrically connect and support the heater installed in the sleeve to the external inlet current, in order to heat the electron emitting material to emit hot electrons, the one side is fixed to one side of the bead glass and the other side is one side. (1) a first support member welded to one side lead of the heater and a second support member welded to electrically connect the other two heater side leads to each other and fixed to the bead glass, wherein the first support member Connect the member to the other lead of the connected heater and the other lead of the heater connected to the second connecting member as a separate second connecting member, and the other lead of the remaining heater connected to the second connecting member as a separate first connecting member. We propose the heater support of the electron gun which is welded and fixed to the oppositely installed bead glass. There.

Therefore, the heater support according to the present invention is connected in a series connection method, wherein the first support members on both sides are connected to the stem pins of two poles, respectively.

EXAMPLE

Hereinafter, an embodiment for realizing the present invention will be described in more detail with reference to the accompanying drawings.

The figure shows the heater support of the electron gun concerning this invention, shows the front view seen from the stem part to the screen direction, and the code | symbol 1 in the figure has shown R, G, and B cathode, respectively.

The cathode (1) is composed of a substantially tubular sleeve with a heater installed therein, a holder for supporting it, and an electron-spinning material of carbonate which emits hot electrons while covering the upper opening of the sleeve. The base metal on the cap is covered.

Here, the heater support according to the present invention is to connect the heaters installed in the three cathodes 1 in a series connection method, the heater leads (3, 3a, 5, 5a, 7, 7a) withdrawn from each heater It is connected sequentially one after another.

That is, the heater supporter includes a first support member 11, one side of which is fused to the bead glass 9, and the other side of the heater lead 3, which is drawn from one cathode, is welded to the other side.

In addition, the heater includes a second support member 13 which simultaneously welds and supports the one side heater leads 5 and 7 drawn from the remaining two cathodes to be electrically connected to each other, which is the first support member. As in (11), it is fused and fixed to the bead glass 9.

On the other hand, the first and second support members 11a and 13a of the in-phase are fused and fixed to the opposing bead glass 9a, and the support members are the other heater leads 3a, 5a and 7a of the cathode. Will be supported.

At this time, the first and the second material member (11a, 13a), as can be seen through the drawings, by rotating the above-described first and second support members (11, 13) by 180 to the respective cathode ( 1) is configured to be connected in series.

That is, the other heater lead 3a which faces the heater lead 3 is electrically connected to the other heater lead 5a which faces the heater lead 5 via an additional second supporting member 13a. As a result, the three cathodes 1 are connected in series with the aforementioned second support member 13.

On the other hand, the other heater lead 7a facing the heater lead 7 is supported by a separate first support member 11a.

In addition, the first and second support members 11, 11a, 13, and 13a may be provided with grooves in the welding portion for easy welding with the heater leads 3, 3a, 5, 5a, 7, and 7a. 21).

In addition, the first supporting members 11 and 11a are welded to the first supporting member 11 on the other side via the stem pins 15 and 17 applied to different poles.

Therefore, the heater support of the present invention having the above-described configuration is applied to the stem pins (15, 17) from the outside, when both poles are formed on both of the first support member (11, 11a), each R, The DC power is supplied to the G and B cathode (1) heaters, which heat the heaters to emit hot electrons contained in the electron-emitting material. Again, the hot electrons are emitted toward the screen with one electron beam by the acceleration and focusing action of the electron gun.

[Effect of design]

As described in the above embodiments, the heater support of the electron gun according to the present invention is formed by connecting the cathodes in series via two first and second support members, and unlike the conventional method, the heater tab is removed and the heater lid is removed. Grooves are provided for welding.

Therefore, according to the present invention, it is possible to effectively overcome the problems caused by the conventional production, management, and assembly of a large number of parts. It can be overcome.

In addition, the heater support according to the present invention facilitates the welding process according to the simplification of the components, it is possible to realize the welding stability of the heater as well as the stable electrospinning characteristics of the cathode.

Claims (5)

In the heater support of the electron gun which electrically connects and supports the heater installed in the sleeve to heat the electron radiating material to emit hot electrons, that is, the electron beam, fixed to one side of the bead grass 9, 9a. And the first supporting members 11 and 11a having the other side welded to one side lead of one heater and one side lead of the other two heaters to be electrically connected to each other, and fixed to the bead glass 9 and 9a. Heater support of the electron gun, characterized in that comprises a second support member (13, 13a). 2. The heater of claim 1, wherein the heater leads 3, 3a, 5, 5a, 7, 7a are separate first and second supports disposed 180 rotationally opposite the first and second support members 11, 13. A heater support of an electron gun, which is connected in series via members (11a, 13a). The heater support according to claim 1, wherein the first support members (11, 11a) are electrically connected to the stem pins (15, 17), respectively. The heater support according to claim 3, wherein the first support member (11) is connected between the stem pin (17) via a connecting member (919). The heater support of claim 1, wherein the first and second support members (11, 11a, 13, 13a) are provided with grooves (21).