JPS5753055A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS5753055A
JPS5753055A JP12830180A JP12830180A JPS5753055A JP S5753055 A JPS5753055 A JP S5753055A JP 12830180 A JP12830180 A JP 12830180A JP 12830180 A JP12830180 A JP 12830180A JP S5753055 A JPS5753055 A JP S5753055A
Authority
JP
Japan
Prior art keywords
discharge lamp
coil
electrode
metal vapor
vapor discharge
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
JP12830180A
Other languages
Japanese (ja)
Inventor
Akihiro Inoue
Toshihiko Ishigami
Yasuki Mori
Satoru Kono
Akihiro Kamiya
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 JP12830180A priority Critical patent/JPS5753055A/en
Publication of JPS5753055A publication Critical patent/JPS5753055A/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
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To start steadily a metal vapor discharge lamp by means of a mercury ballast with a glow starter of which secondary voltage is 200V class, by setting the weight per a unit length of an electrode coil in the direction of an electrode stem to a higher level than specific value, according to the rated power of each discharge lamp. CONSTITUTION:The weight of a coil per a unit length M (g/mm.) calculated by dividing the total wight of the coil in the electrode coil unit 31 of the main electrode of a metal vapor discharge lamp such as a metal halide lamp or the like, by the coil length (l) in the direction of its electrode stem 30 is set respectively to 0.01, 0.03, 0.05, 0.08 or 0.1g/mm. according to the rated power of each discharge lamp, that is, 100, 250, 400, 700 or 1KW class. As the loss heat of the main electrode at the starting time of a discharge lamp is caused mainly by the heat transmitted to the tube wall of a luminous tube 2 through the electrode stem 30, the temperature of the main electrode rises quickly accordingly as the weight of the coil per a unit length increases. Thereby, the metal vapor discharge lamp of each rated power can be started steadily and quickly by a mercury ballast with a glow starter of which secondary voltage is 200V class.
JP12830180A 1980-09-16 1980-09-16 Metal vapor discharge lamp Pending JPS5753055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12830180A JPS5753055A (en) 1980-09-16 1980-09-16 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12830180A JPS5753055A (en) 1980-09-16 1980-09-16 Metal vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS5753055A true JPS5753055A (en) 1982-03-29

Family

ID=14981399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12830180A Pending JPS5753055A (en) 1980-09-16 1980-09-16 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS5753055A (en)

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