JPS5652834A - Direct-heating cathode structure - Google Patents

Direct-heating cathode structure

Info

Publication number
JPS5652834A
JPS5652834A JP12689379A JP12689379A JPS5652834A JP S5652834 A JPS5652834 A JP S5652834A JP 12689379 A JP12689379 A JP 12689379A JP 12689379 A JP12689379 A JP 12689379A JP S5652834 A JPS5652834 A JP S5652834A
Authority
JP
Japan
Prior art keywords
conductive
supporter
filament
ribbon
secured
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
JP12689379A
Other languages
Japanese (ja)
Inventor
Shigekazu Shibata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12689379A priority Critical patent/JPS5652834A/en
Publication of JPS5652834A publication Critical patent/JPS5652834A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

PURPOSE:To prevent the flexure of a filament due to thermal expansion by securing the filament to the central portion of a curved ribbon conductor having both ends fixed to a conductive supporter and to the top of a central conductive supporter. CONSTITUTION:Three conductive supporters 12, 131, 132 are projected from an insulated supporting board 11. Both ends of a conductive ribbon supporter 18 curved approximately in symmetrical are secured to the sides of conductive supporters 131, 132 at the outside. One end of a filament 17 fixed with a cathode 16 constructed of a substrate metal 14 and an electron emission material layer 15 is secured to the top of a central conductive supporter 12 while the other end is secured to the central portion of the conductive ribbon supporter 18. Ni-W alloy (Ni 70%, W 30%) and Ni-Cr alloy (Ni 80%, Cr 20%) are employed respectively for the filament 17 and the conductive ribbon supporter 18 but other material may be employed.
JP12689379A 1979-10-03 1979-10-03 Direct-heating cathode structure Pending JPS5652834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12689379A JPS5652834A (en) 1979-10-03 1979-10-03 Direct-heating cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12689379A JPS5652834A (en) 1979-10-03 1979-10-03 Direct-heating cathode structure

Publications (1)

Publication Number Publication Date
JPS5652834A true JPS5652834A (en) 1981-05-12

Family

ID=14946463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12689379A Pending JPS5652834A (en) 1979-10-03 1979-10-03 Direct-heating cathode structure

Country Status (1)

Country Link
JP (1) JPS5652834A (en)

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