JPH0392348U - - Google Patents

Info

Publication number
JPH0392348U
JPH0392348U JP15209489U JP15209489U JPH0392348U JP H0392348 U JPH0392348 U JP H0392348U JP 15209489 U JP15209489 U JP 15209489U JP 15209489 U JP15209489 U JP 15209489U JP H0392348 U JPH0392348 U JP H0392348U
Authority
JP
Japan
Prior art keywords
filament
directly heated
control electrode
heated cathode
radioactive substance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15209489U
Other languages
English (en)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15209489U priority Critical patent/JPH0392348U/ja
Publication of JPH0392348U publication Critical patent/JPH0392348U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Description

【図面の簡単な説明】
第1図は本考案の一実施例に係る直熱型陰極を
示す縦断面図、第2図は同直熱型陰極の横断面図
、第3図は同直熱型陰極の要部の拡大横断面図、
第4図は従来の直熱型陰極の縦断面図、第5図は
従来の直熱型陰極の横断面図である。 1……絶縁支持体、2……陰極リード、4……
フイラメント、5……電子放射性物質、6……制
御電極、6a……グリツド孔、61……凹部。

Claims (1)

  1. 【実用新案登録請求の範囲】 絶縁支持体に挿着した一対の陰極リードの先端
    間にコイル状フイラメントを張設して該フイラメ
    ントに電子放射性物質を塗着し、該電子放射性物
    質から放出される電子が通過するグリツド孔を有
    した制御電極を上記フイラメント上方に設けてな
    る直熱型陰極において、 上記制御電極のグリツド孔下面に、上記コイル
    状フイラメントの外周面と相似する凹部を形成し
    たことを特徴とする直熱型陰極。
JP15209489U 1989-12-29 1989-12-29 Pending JPH0392348U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15209489U JPH0392348U (ja) 1989-12-29 1989-12-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15209489U JPH0392348U (ja) 1989-12-29 1989-12-29

Publications (1)

Publication Number Publication Date
JPH0392348U true JPH0392348U (ja) 1991-09-19

Family

ID=31698370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15209489U Pending JPH0392348U (ja) 1989-12-29 1989-12-29

Country Status (1)

Country Link
JP (1) JPH0392348U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014171785A1 (ko) * 2013-04-19 2014-10-23 주식회사 매트코리아 냉온수 매트

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014171785A1 (ko) * 2013-04-19 2014-10-23 주식회사 매트코리아 냉온수 매트

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