JPS563935A - Direct heating type cathode structure - Google Patents

Direct heating type cathode structure

Info

Publication number
JPS563935A
JPS563935A JP7752479A JP7752479A JPS563935A JP S563935 A JPS563935 A JP S563935A JP 7752479 A JP7752479 A JP 7752479A JP 7752479 A JP7752479 A JP 7752479A JP S563935 A JPS563935 A JP S563935A
Authority
JP
Japan
Prior art keywords
cathode structure
filament
base plate
coated
clad material
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
JP7752479A
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 JP7752479A priority Critical patent/JPS563935A/en
Publication of JPS563935A publication Critical patent/JPS563935A/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

Landscapes

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

Abstract

PURPOSE:To improve the life-span of a direct heating type cathode structure and its functional characteristics, by using a specific clad material to constitute each filament, on whose surface is fixed a metallic base plate coated with an electron radiating material. CONSTITUTION:The filaments 8 are extended between their corresponding heads of supports 2 and springs 7 of a cathode structure. A metallic base plate 9 is fixed on substantial center of each filament 8. The surface of each metallic base plate 9 is coated with an electron radiating material. As each filament of the structure is used a clad material which is made of a heat resistant metal, such as Mo or W, coated with an Ni-base heat resistant alloy. For example, the clad material may be made by using Mo11 as a core material, cladding an Ni-W alloy 12 over the core material and forming the clad material into a symmetrical comfiguration with respect to its vertical and transverse directions.
JP7752479A 1979-06-21 1979-06-21 Direct heating type cathode structure Pending JPS563935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7752479A JPS563935A (en) 1979-06-21 1979-06-21 Direct heating type cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7752479A JPS563935A (en) 1979-06-21 1979-06-21 Direct heating type cathode structure

Publications (1)

Publication Number Publication Date
JPS563935A true JPS563935A (en) 1981-01-16

Family

ID=13636351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7752479A Pending JPS563935A (en) 1979-06-21 1979-06-21 Direct heating type cathode structure

Country Status (1)

Country Link
JP (1) JPS563935A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117841U (en) * 1977-02-28 1978-09-19
ES2129304A1 (en) * 1994-12-29 1999-06-01 Samsung Display Devices Co Ltd Directly heated cathode structure and manufacturing method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53117841U (en) * 1977-02-28 1978-09-19
ES2129304A1 (en) * 1994-12-29 1999-06-01 Samsung Display Devices Co Ltd Directly heated cathode structure and manufacturing method thereof

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