JPS5784557A - Metal vapor electric-discharge lamp - Google Patents

Metal vapor electric-discharge lamp

Info

Publication number
JPS5784557A
JPS5784557A JP16179080A JP16179080A JPS5784557A JP S5784557 A JPS5784557 A JP S5784557A JP 16179080 A JP16179080 A JP 16179080A JP 16179080 A JP16179080 A JP 16179080A JP S5784557 A JPS5784557 A JP S5784557A
Authority
JP
Japan
Prior art keywords
outer tube
getters
gas
charging
metal vapor
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
JP16179080A
Other languages
Japanese (ja)
Inventor
Keiji Watabe
Ryo Suzuki
Katsuya Otani
Masahiro Dobashi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16179080A priority Critical patent/JPS5784557A/en
Publication of JPS5784557A publication Critical patent/JPS5784557A/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
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To adjust the generated surge voltage to a given value, and secure the start of a metal vapor electric-discharge lamp by charging the outer tube with a charging gas at below a given pressure, and installing zirconium bulk getters in the outer tube, and thereby making a starting heat responsive element to operate in an atmosphere of the charging gas. CONSTITUTION:A rare gas such as xenon is charged into an outer tube 7 of a high-pressure sodium lamp at a pressure of below 100 Torr. Zirconium bulk getters 27 and 28 are placed near an emission tube 1. When a bimetal 4 is heated and operateds with radiation heat produced by heating a bimetal heating filament 5 by use of current for cutting off the contact between contacts 22 and 23, surge voltage generated in a ballast is reduced. The getters 27 and 28 absorb impure gas developed within the outer tube 7 during the life of the lamp.
JP16179080A 1980-11-17 1980-11-17 Metal vapor electric-discharge lamp Pending JPS5784557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16179080A JPS5784557A (en) 1980-11-17 1980-11-17 Metal vapor electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16179080A JPS5784557A (en) 1980-11-17 1980-11-17 Metal vapor electric-discharge lamp

Publications (1)

Publication Number Publication Date
JPS5784557A true JPS5784557A (en) 1982-05-26

Family

ID=15741951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16179080A Pending JPS5784557A (en) 1980-11-17 1980-11-17 Metal vapor electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS5784557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170152A (en) * 1984-02-14 1985-09-03 Hitachi Ltd Discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60170152A (en) * 1984-02-14 1985-09-03 Hitachi Ltd Discharge lamp

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