JPS5871964U

JPS5871964U - Shadow mask type color cathode ray tube

Info

Publication number: JPS5871964U
Application number: JP16592781U
Authority: JP
Inventors: 芳夫鈴木
Original assignee: 株式会社東芝
Priority date: 1981-11-09
Filing date: 1981-11-09
Publication date: 1983-05-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はシャドウマスク式ブラウン管のシャドウマスク
乃至螢光面近傍の要部を示す部分概略図、第２図乃至第
５図は夫々従来のマスク構造の要部を示す部分概略図、
第６図及び第７図は本考案の実施例を示す部分概略図で
ある。２０・・・貫通孔、３１・・・有効部、３２・・・非有
効部、３３・・・折り曲げ部、３４・・・スカート部、
３５゜３６、　３９．　４０・・・境界部、３７・・・
薄肉部、３８・・・非貫通溝或は孔。FIG. 1 is a partial schematic diagram showing the main parts near the shadow mask or fluorescent surface of a shadow mask type cathode ray tube, and FIGS. 2 to 5 are partial schematic diagrams showing the main parts of a conventional mask structure, respectively.
6 and 7 are partial schematic diagrams showing an embodiment of the present invention. 20... Through hole, 31... Effective part, 32... Ineffective part, 33... Bent part, 34... Skirt part,
35°36, 39. 40... Boundary part, 37...
Thin wall portion, 38... non-penetrating groove or hole.

Claims

[Scope of utility model registration request]

an envelope, an electron gun disposed in the envelope and generating an electron beam, and a fluorescent surface provided opposite the electron gun;
A shadow mask type color cathode ray tube is provided with a shadow mask disposed close to the fluorescent surface and having a large number of apertures through which the electron beam passes, the shadow mask being the fluorescent surface on which the color image is projected. An effective part having a large number of through holes corresponding to the above, and a skirt part which is located on the peripheral extension of this effective part and is bent near the peripheral end,
A portion of the ineffective portion facing the fluorescent surface of the shadow mask to the bent portion and the skirt portion is smooth with the remaining ineffective portion. A shadow mask type color cathode ray tube characterized in that it is formed to have a mechanical strength gradient.