JPS6048654U

JPS6048654U - Cathode structure for electron tube

Info

Publication number: JPS6048654U
Application number: JP14007983U
Authority: JP
Inventors: 一雄小林
Original assignee: 株式会社東芝
Priority date: 1983-09-09
Filing date: 1983-09-09
Publication date: 1985-04-05

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の電子管用陰極構体の一例を示す側断面図
、第２図ａ、　ｂは本発明の一実施例に係る電子管用陰
極構体を示す側断面図と平面図、第３図は従来及びこの
考案の陰極構体におけるエミッション特性を示す特性曲
線図である。１・・・絶縁体素子、２・・・円筒、３・・・陰極基体
金属、４・・・電子放射物質、５・・・陰極、８・・・
スペーサ、９・・・リテイナ、１１・・・ビードガラス
、２０・・・円板、２１・・・円筒、２２・・・端子、
２３・・・鍔、２４・・・第１格子電極、２５・・・開
孔。FIG. 1 is a side sectional view showing an example of a conventional cathode assembly for an electron tube, FIGS. FIG. 3 is a characteristic curve diagram showing the emission characteristics of the conventional cathode structure and the cathode structure of this invention. DESCRIPTION OF SYMBOLS 1... Insulator element, 2... Cylinder, 3... Cathode base metal, 4... Electron emitting material, 5... Cathode, 8...
Spacer, 9... Retainer, 11... Bead glass, 20... Disc, 21... Cylinder, 22... Terminal,
23... Tsuba, 24... First grid electrode, 25... Opening.

Claims

[Scope of utility model registration request]

a first grid electrode consisting of a cylinder and a disk fixed to cover one end of the cylinder and having an opening in the center and partially embedded in bead glass; and a first grid electrode fixed to the inner wall of the cylinder. a disc-shaped insulator element, a cathode that is fixed through the disc-shaped insulator element and has an electron-emitting substance at its tip facing the opening at a predetermined distance; A cathode for an electron tube, comprising: a spacer arranged and fixed between a disk of a first grid electrode; and a retainer arranged and fixed to the insulator element and a cylindrical inner wall of the first grid electrode. Structure.