JPS5744960A - High pressure discharge lamp - Google Patents

High pressure discharge lamp

Info

Publication number
JPS5744960A
JPS5744960A JP11923380A JP11923380A JPS5744960A JP S5744960 A JPS5744960 A JP S5744960A JP 11923380 A JP11923380 A JP 11923380A JP 11923380 A JP11923380 A JP 11923380A JP S5744960 A JPS5744960 A JP S5744960A
Authority
JP
Japan
Prior art keywords
restarting
filament
discharge
high pressure
electrodes
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
JP11923380A
Other languages
Japanese (ja)
Inventor
Keiji Watabe
Ryo Suzuki
Masato Saito
Keiji Fukuyama
Yoshinori Takai
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 JP11923380A priority Critical patent/JPS5744960A/en
Publication of JPS5744960A publication Critical patent/JPS5744960A/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
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To facilitate the start of discharge an to shorten the restarting time, by performing the restarting of high pressure mercury lamp under such state where the tungsten filament provided on one electrode of a light emission tube is heated above specific temperature. CONSTITUTION:Mercury, rare gas and metal halide are encapsulated in a light emission tube 1 incorporated in a metal halide lamp, while electrodes 2, 3 are provided and a filament 5 composed of tungsten is connected to the electrode 2 and a lighting device 12. Then at the restarting after unlighting, current is supplied to the filament 5 to heat above 1,500 deg.C and the voltage from the lighting device 12 is applied between the electrodes 2 and 3 to start the discharge. Since such states as the emission of the electron from the filament is prepared, the start of discharge is considerably facilitated thereby the restarting voltage can be reduced considerably.
JP11923380A 1980-08-29 1980-08-29 High pressure discharge lamp Pending JPS5744960A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11923380A JPS5744960A (en) 1980-08-29 1980-08-29 High pressure discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11923380A JPS5744960A (en) 1980-08-29 1980-08-29 High pressure discharge lamp

Publications (1)

Publication Number Publication Date
JPS5744960A true JPS5744960A (en) 1982-03-13

Family

ID=14756249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11923380A Pending JPS5744960A (en) 1980-08-29 1980-08-29 High pressure discharge lamp

Country Status (1)

Country Link
JP (1) JPS5744960A (en)

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