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Scoop portion of CRT

A technology for cathode ray tubes, applied in the direction of cathode ray tubes/electron beam tubes, cathode ray/electron beam tube shells/containers, discharge tubes, etc., can solve the problem that the wall thickness is too thin, and there is no effective solution and time and increased labor burden

Inactive Publication Date: 2003-10-08
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under this method, it is necessary to fundamentally change various components such as the design and manufacture of the bucket molding die, the design and manufacture of the deflection yoke, and the manufacture of other cathode ray tubes. In this way, the time and labor will be reduced. lead to an increase in the cost of
[0012] Furthermore, in addition to the above, when considering the method of reducing the wall thickness of the yoke as a whole, the wall thickness will be too thin, which will cause problems in molding or strength, and the limit of the thin wall thickness is There is no effective solution yet

Method used

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  • Scoop portion of CRT
  • Scoop portion of CRT
  • Scoop portion of CRT

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Embodiment Construction

[0067] Next, the preferred embodiments of the present invention will be described with reference to the accompanying drawings.

[0068] as figure 1 As shown, in a preferred embodiment of the present invention, a bucket portion for a cathode ray tube (hereinafter referred to as bucket portion) 1 has a substantially rectangular large opening 2 and a substantially circular small opening 3 . The substantially rectangular large opening 2 is used as a mutual sealing joint with the non-illustrated cathode ray tube subsection. A substantially cylindrical neck tube 4 is sealingly joined to the substantially circular small opening 3 . Furthermore, a yoke 6 is connected to the small opening 3 side of the approximately funnel-shaped main body 5 , and a deflection yoke is attached to the outer peripheral side of the yoke 6 , and the inside of the yoke 6 serves as a path for electron beams. The yoke portion 6 has a pyramidal shape that changes from a circular shape to a substantially rec...

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PUM

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Abstract

The present invention provides a bucket portion for a cathode ray tube, wherein a diagonal inner surface curved portion is formed on the inner surface of a diagonal portion of a pyramid-shaped yoke. In this diagonal inner surface curved portion, at least one part of the inner surface curved portion on the long axis L side and the short axis S side of the diagonal axis D expands and protrudes toward the outer side. In addition, the part of the inner surface curved portion on the side of the long axis L and the side of the short axis S is composed of circular arc portions with different radii.

Description

technical field [0001] The present invention relates to an improvement technology of a pyramid-shaped yoke portion of a funnel for a cathode ray tube (Cathode Ray Tube), wherein the yoke is connected to the body of the funnel for a cathode ray tube . Background technique [0002] In the known technology, the main components of the cathode ray tube have a sub-surface (Pannel) and a bucket, wherein the sub-panel has a slightly rectangular image display portion, and the bucket is sealed with the aforementioned sub-surface, and the inside of the bucket can pass Electron beam (beam). The bucket part has a substantially rectangular large opening and a substantially circular small opening, and a cylindrical neck tube is connected to the small opening, wherein an electron gun is stored inside the neck tube. A yoke is connected to the side of the small opening of the roughly funnel-shaped main body, and a deflection yoke is attached to the outer peripheral side of the yoke. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/86
CPCH01J29/861H01J2229/8606H01J29/86
Inventor 柿木浩
Owner NIPPON ELECTRIC GLASS CO LTD