JPS5753061A - High-pressure vapor discharge lamp - Google Patents

High-pressure vapor discharge lamp

Info

Publication number
JPS5753061A
JPS5753061A JP12978280A JP12978280A JPS5753061A JP S5753061 A JPS5753061 A JP S5753061A JP 12978280 A JP12978280 A JP 12978280A JP 12978280 A JP12978280 A JP 12978280A JP S5753061 A JPS5753061 A JP S5753061A
Authority
JP
Japan
Prior art keywords
enclosure
end portion
tube
diameter
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
JP12978280A
Other languages
Japanese (ja)
Inventor
Shuzo Akutsu
Yoshiro Ogata
Kazuo Kobayashi
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 Holdings Corp
Original Assignee
Matsushita Electronics Corp
Matsushita Electric Industrial 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 Matsushita Electronics Corp, Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electronics Corp
Priority to JP12978280A priority Critical patent/JPS5753061A/en
Priority to GB8127644A priority patent/GB2085650A/en
Priority to DE19813137076 priority patent/DE3137076A1/en
Publication of JPS5753061A publication Critical patent/JPS5753061A/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
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To prevent the vanishment of enclosures in the enclosure of a luminous tube made of an alumina material and the breakage of the enclosure and shorten the rise time of a high-pressure vapor discharge lamp, by making small the diameter of the end portion of the enclosure of the luminous tube that than of the central portion of the enclosure and attaching directly and tightly a tube-like electrode conductor in the end portion of the enclosure. CONSTITUTION:A sodium amalgam 5 and rare gas 6 for an assistant of starting are enclosed in the alumina material made enclosure 1' of a luminous tube, and the diameter of the end portion of the enclosure 1' is made smaller than that of its central portion. Furthermore, an electrode conductor 3 made of a niobium tube is attached directly and tightly in the end portion of the enclosure 1' with ceramic cement. Then, althrough the length (1') of a sealing portion is lengthened, the heat capacity of the sealing portion does not become large, and as the diameter of the end portion is made small, the rise of temperature at the coldest point in the end portion of the tube is quickened. Thereby, the vanishment of enclosures through a sealing portion can be restrained, the breakage of the end portion of the enclosure 1' can be prevented, and the rise time at the time of lighting can be shortened.
JP12978280A 1980-09-17 1980-09-17 High-pressure vapor discharge lamp Pending JPS5753061A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP12978280A JPS5753061A (en) 1980-09-17 1980-09-17 High-pressure vapor discharge lamp
GB8127644A GB2085650A (en) 1980-09-17 1981-09-11 High-pressure discharge lamp
DE19813137076 DE3137076A1 (en) 1980-09-17 1981-09-17 HIGH PRESSURE DISCHARGE LAMP

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12978280A JPS5753061A (en) 1980-09-17 1980-09-17 High-pressure vapor discharge lamp

Publications (1)

Publication Number Publication Date
JPS5753061A true JPS5753061A (en) 1982-03-29

Family

ID=15018083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12978280A Pending JPS5753061A (en) 1980-09-17 1980-09-17 High-pressure vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS5753061A (en)

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