JPS5750760A - Electrode for discharge lamp - Google Patents

Electrode for discharge lamp

Info

Publication number
JPS5750760A
JPS5750760A JP12766880A JP12766880A JPS5750760A JP S5750760 A JPS5750760 A JP S5750760A JP 12766880 A JP12766880 A JP 12766880A JP 12766880 A JP12766880 A JP 12766880A JP S5750760 A JPS5750760 A JP S5750760A
Authority
JP
Japan
Prior art keywords
tip
emitter
pin
metal
discharge lamp
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
JP12766880A
Other languages
Japanese (ja)
Inventor
Hiroshi Sugiyama
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP12766880A priority Critical patent/JPS5750760A/en
Publication of JPS5750760A publication Critical patent/JPS5750760A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To facilitate the start of discharge by providing a metallic pin conducting with a metal pot from the inner bottom face of the metal pot filled with an emitter toward the open section such that the tip isn't consealed, thereby concentrating the electric field at the tip of the metal pin. CONSTITUTION:In a sintered electrode for a discharge lamp such as a fluorescent lamp, a metal pin 8 electrically conducting with a metal pot 7 is provided from the inner bottom face 7a of the metal pot 7 filled with an emitter 9 toward an open section 7b such that the tip isn't consealed. Here the tip of the pin 8 is formed through the electrolytic abrasion into a needle while the powder of at least one element selected from W, Ta, Zr, Fe is mixed to the emitter 9. Since the electric field produced during the start of a discharge lamp will concentrate at the tip, the time required for the heating of the emitter 9 is shortened resulting in the facilitation of the starting.
JP12766880A 1980-09-13 1980-09-13 Electrode for discharge lamp Pending JPS5750760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12766880A JPS5750760A (en) 1980-09-13 1980-09-13 Electrode for discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12766880A JPS5750760A (en) 1980-09-13 1980-09-13 Electrode for discharge lamp

Publications (1)

Publication Number Publication Date
JPS5750760A true JPS5750760A (en) 1982-03-25

Family

ID=14965762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12766880A Pending JPS5750760A (en) 1980-09-13 1980-09-13 Electrode for discharge lamp

Country Status (1)

Country Link
JP (1) JPS5750760A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62275085A (en) * 1986-02-24 1987-11-30 Nippon Mining Co Ltd Sealing method for ampule for synthesizing crystal and vacuum exhauster
EP0378338A2 (en) * 1989-01-12 1990-07-18 Tokyo Densoku Kabushiki Kaisha Discharge tube
US5278474A (en) * 1989-01-12 1994-01-11 Tokyo Densoku Kabushiki Kaisha Discharge tube
WO1999034402A1 (en) * 1997-12-26 1999-07-08 Toshiba Lighting & Technology Corporation Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62275085A (en) * 1986-02-24 1987-11-30 Nippon Mining Co Ltd Sealing method for ampule for synthesizing crystal and vacuum exhauster
EP0378338A2 (en) * 1989-01-12 1990-07-18 Tokyo Densoku Kabushiki Kaisha Discharge tube
US5278474A (en) * 1989-01-12 1994-01-11 Tokyo Densoku Kabushiki Kaisha Discharge tube
WO1999034402A1 (en) * 1997-12-26 1999-07-08 Toshiba Lighting & Technology Corporation Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus
EP0964429A1 (en) * 1997-12-26 1999-12-15 Toshiba Lighting & Technology Corporation Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus
EP0964429A4 (en) * 1997-12-26 2001-03-21 Toshiba Lighting & Technology Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus

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