JPS5734632A - Direct heating type cathode structure - Google Patents

Direct heating type cathode structure

Info

Publication number
JPS5734632A
JPS5734632A JP10920180A JP10920180A JPS5734632A JP S5734632 A JPS5734632 A JP S5734632A JP 10920180 A JP10920180 A JP 10920180A JP 10920180 A JP10920180 A JP 10920180A JP S5734632 A JPS5734632 A JP S5734632A
Authority
JP
Japan
Prior art keywords
conductive
letter shape
substrate
pair
coated
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
JP10920180A
Other languages
Japanese (ja)
Inventor
Yukio Takanashi
Takumi Tonai
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 JP10920180A priority Critical patent/JPS5734632A/en
Publication of JPS5734632A publication Critical patent/JPS5734632A/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 temperature efficiency of a cathode ray structure, by fixing the both ends of ribbon filament coated with electron radioactive substance on its central area to a pair of conductive stay, while forming the intermediate portions of the filament between its central area and both ends into U-letter shape curve along the tube axis. CONSTITUTION:An insulator substrate 11 made of ceramics etc. is inserted in a cathode cylinder 12 after a pair of conductive stay 13 and 14 are led to penetrate this substrate 11 and the cathode cylinder 12 and conductive stays 13 and 14 are fixed to the insulator substrate 11 with adhesive layers 132 and 133. Next, a ribbon filament member 15 containing 70wt% of Ni and 30wt% of W1 is built up with a central portion 151, U-letter shape curved portion 152, and end 153, whereby the both ends 153, 153 are fixed to the conductive stays 13 and 14, and the central portion 151 is coated with substrate metal 18 made of Ni alloy containing Ng, Si and W and an electron radioactive substance 19 made from (Ba, Sr, Co) O. Thus, intense relfection is generated in the gap between the both ends of U-letter shape, resulting in enhancement of temperature efficiency.
JP10920180A 1980-08-11 1980-08-11 Direct heating type cathode structure Pending JPS5734632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10920180A JPS5734632A (en) 1980-08-11 1980-08-11 Direct heating type cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10920180A JPS5734632A (en) 1980-08-11 1980-08-11 Direct heating type cathode structure

Publications (1)

Publication Number Publication Date
JPS5734632A true JPS5734632A (en) 1982-02-25

Family

ID=14504170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10920180A Pending JPS5734632A (en) 1980-08-11 1980-08-11 Direct heating type cathode structure

Country Status (1)

Country Link
JP (1) JPS5734632A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944744A (en) * 1982-09-08 1984-03-13 Matsushita Electronics Corp Direct-heated cathode
JPS61128451A (en) * 1984-11-27 1986-06-16 Toshiba Corp X ray tube device
US4698835A (en) * 1984-05-31 1987-10-06 Kabushiki Kaisha Toshiba X-ray tube apparatus
US4730353A (en) * 1984-05-31 1988-03-08 Kabushiki Kaisha Toshiba X-ray tube apparatus
EP0911861A1 (en) * 1997-09-16 1999-04-28 Eaton Corporation Filament for ion implanter plasma shower

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120166A (en) * 1975-03-24 1976-10-21 Rca Corp Electron radiation device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120166A (en) * 1975-03-24 1976-10-21 Rca Corp Electron radiation device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944744A (en) * 1982-09-08 1984-03-13 Matsushita Electronics Corp Direct-heated cathode
US4698835A (en) * 1984-05-31 1987-10-06 Kabushiki Kaisha Toshiba X-ray tube apparatus
US4730353A (en) * 1984-05-31 1988-03-08 Kabushiki Kaisha Toshiba X-ray tube apparatus
JPS61128451A (en) * 1984-11-27 1986-06-16 Toshiba Corp X ray tube device
JPH0418419B2 (en) * 1984-11-27 1992-03-27 Tokyo Shibaura Electric Co
EP0911861A1 (en) * 1997-09-16 1999-04-28 Eaton Corporation Filament for ion implanter plasma shower

Similar Documents

Publication Publication Date Title
JPS5734632A (en) Direct heating type cathode structure
DE19721432A1 (en) Method of manufacture and cold cathode electrode for discharge lamp
US2945977A (en) Fluorescent glow discharge lamp
DE69023938D1 (en) Indirectly heated cathode for a gas discharge tube.
JPS5611832A (en) Directly heated cathode of electron tube and its manufacture
JPS56147346A (en) Electron source
GB1052902A (en)
TW430840B (en) Cathode ray tube having an improved cathode structure and a method of making the same
JPS5494783A (en) Incandescent lamp
GB1418039A (en) X-ray tubes
JPS57202632A (en) Planar display
JPS563935A (en) Direct heating type cathode structure
JPS5652834A (en) Direct-heating cathode structure
JPS57189450A (en) Metal vapor electric-discharge lamp
JPS56114264A (en) Cathode-ray tube
JPS55115242A (en) Projection type braun tube
JPS579044A (en) Electrode for discharge lamp
JPS53125381A (en) Fluorescent lamp
JPS57840A (en) Metal vapor discharge lamp
JPS563963A (en) Fluorescent lamp
GB1032208A (en) Improvements in or relating to electron discharge device
GB1319042A (en) Cold cathode gas discharge tubes
JPS55166845A (en) Manufacturing method of cathode structure for magnetron
JPS5582777A (en) Heating element for evaporation
KR870001637A (en) Cathode Structures for Cathode Ray Tubes