KR930005786Y1 - Electron gun structure for color cathode-ray tube - Google Patents

Abstract

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Description

Electron Muzzle of the Color Chamber

1 is a front view of a general inline electron muzzle.

2 is a cross-sectional view of the G1 and G2 electrodes during a span set operation.

3A and 3B show conventional G1 electrodes and G2 electrodes, where a is a plan view and b is a cross-sectional view taken along line A-A of a;

4a, b, c, d are cross-sectional views of a conventional electrode structure.

5 is a cross-sectional view showing the configuration of the present invention.

* Explanation of symbols for main parts of the drawings

1: Cathode part 2: Cathode

3: heater 4: G1 electrode

5: G2 electrode 6: G3 electrode

7: G4 electrode 8: electrode support

9: nozzle 10: spacer

Opening: 4R, 5R, 4G, 5G, 4B, 5B

The present invention relates to an inline type electron barrel of a color receiver, and in particular, an electron gun sphere of a color receiver to prevent the warpage of the G1 electrode and the G2 electrode and to easily set the gap between the electrodes. It is about.

A general inline electron gun body has a cathode part 1 including a cathode 2 and a heater 3, a G1 electrode 4, a G2 electrode 5, a G3 electrode 6, and a G4 electrode 7 as shown in FIG. Electron lenses are formed between the electrodes 4, 5, 6, and 7, each of which has three electron beam through holes corresponding to three electron beams.

The electron gun of this structure is fixed to the bead glass which is the electrode support 8 when assembling the supporter of the G4 electrode 7 and the cathode portion 1 from the G1 electrode 4 to the jig, and then a span set as shown in FIG. As is well known in the art, the nozzle 9 is inserted into the electrode with respect to the surface of the G2 electrode 5, and then the gap between the G2 electrode 5 and the cathode 2 is adjusted using high pressure air. It is set to the prescribed value and assembled by welding and fixing the cathode 2 to the supporter of the cathode 1.

Here, the G1 and G2 electrodes 4 and 5 have a plate-like structure as shown in Figs. 3a and b, and the openings 4R, 4G, 4B, and 5R, 5G, 5B, which are electron beam through holes, respectively, are known as As shown in FIG. 3, the grid electrodes having a conventional plate-like structure have poor flatness, and thus, it is difficult to set the spacing between electrodes according to a prescribed value when assembling the electrodes.

That is, as shown in FIGS. 4a, b, c, and d, both ends of the G1 and G2 electrodes 4 and 5 are separated from the spacer 10 or the opening and the spacer 10 are in contact with each other to separate the spacer 10 from the electrode. At this time, the deformation of the G1 and G2 electrodes 4 and 5 occurs due to the friction between the openings and the spacers 10, which causes the gap between the G2 electrode 5 and the cathode 2 to fluctuate between the three electron beams. Cut-off adjustment is difficult, and therefore, high-quality tube structures are not easily produced, resulting in distortion of the electron muzzle.

The present invention solves the above problems, and the contact between the electrode and the spacer is made at both ends of the electrode to prevent deformation during extraction of the spacer and to maintain the flatness of the electrode as well. The explanation is as follows.

5 shows the structure of the present invention, and each opening (4R, 4G, 4B), (5R, 5G, 5B) and its periphery of the G1 and G2 electrodes (4) and (5) are turned outward with respect to the spacer. Outer openings 4R, 4B (5R, 5B) were formed to protrude more than the openings 4G (5G) of the middle-aged.

In addition, the outer and outer openings 4R and 4B and 5R and 5B of the G1 and G2 electrodes 4 and 5 and the protrusions around them are formed larger than the openings 4G and 5G in the center and the protrusions around them. Both ends of the electrode were in contact with the spacer 10.

Therefore, the G1 electrode 4 and the G2 electrode 5 have a good shape without the inclination of the electrode, and the openings 4R, 4G, 4B, 5R, 5G, 5B, which are the through holes of the electron beam, and the periphery thereof have the spacer 10. Since there is no direct contact with the opening and its periphery when the spacer 10 is pulled out because it is not in direct contact with, the gap between the electrodes can be set stably by preventing the deformation of the electrode. It is easy. In addition, since the distance between the outer and outer openings is wider than the gap between the openings through which the central electron beam passes, it is appropriate to match the characteristics of the three electron beams by setting the gap with the cathode narrow.

In the above structure, since the center opening and the outside opening of the electron beam are different from each other, the gap between the electrodes is different, so it is easier to set the dimensions of the nozzle 9 in the spanset operation, and the cap type for the plate-shaped integrated electrodes. Applicable to an integrated electrode, it is not limited only to the structure of the electron gun as shown in FIG.

As described above, according to the present invention, it is possible to maintain uniform flatness and to easily set the spacing between the electrodes by preventing the occurrence of deformation and deformation of the electrode and the generation of grooves by the spacer 10. Can be.

As described above, according to the present invention, when the spacer 10 is pulled out between the G1 electrode 4 and the G2 electrode 5, the openings 4R, 4G and 4B of the G1 and G2 electrodes 4 and 5 through which three electron beams pass. , (5R, 5G, 5B) and its periphery have no contact with the spacer 10 and only the both ends of the G1 and G2 electrodes 4, 5 are in contact with the spacer 10 due to the withdrawal of the spacer 10. There is no fear that the electrodes will be inclined, there is no possibility of flaws, the spacing between the electrodes becomes easy, and the spacing between the electrodes does not occur.

In addition, it is a useful design that the adjustment of the cut-off characteristic between three electron beams becomes easy, and the cut-off fluctuation does not generate | occur | produce also in each electron beam.

Claims (3)

A plurality of cathodes (1) and G1 electrode (4), G2 electrode (5), and G3 electrode (6) disposed adjacent to the cathode are provided, and are assembled between the G1 electrode (4) and the G2 electrode (5). In the in-line electron gun with the spacer 10 interposed therebetween, the G ₁ , G ₂ electrodes 4, 5 each have a peripheral portion including openings 4R, 4G, 4B, and 5R, 5G, 5B. An electron gun sphere of a color receiver, characterized in that it is projected outwardly about (10) so that both ends of the electrodes (4) and (5) are in contact with the spacer (10). A peripheral portion including a central opening (4G) (5G) of the electrodes (4) (5), both ends of which are in contact with the spacer (10), both outer openings (4R, 4B), (5R, An electron barrel of a color receiver, characterized in that it is lower than the periphery, including 5B). The periphery of claim 1, wherein the peripheral portion including both outer openings 4R, 4B, 5R, 5B of the electrodes 4, 5, both ends of which are in contact with the spacer 10, has a center opening 4G (5G). Electron barrel of the color water pipe, characterized in that the configuration is formed longer than the periphery including a).