JPS57115753A - High pressure metal vapor electric-discharge lamp - Google Patents

High pressure metal vapor electric-discharge lamp

Info

Publication number
JPS57115753A
JPS57115753A JP230981A JP230981A JPS57115753A JP S57115753 A JPS57115753 A JP S57115753A JP 230981 A JP230981 A JP 230981A JP 230981 A JP230981 A JP 230981A JP S57115753 A JPS57115753 A JP S57115753A
Authority
JP
Japan
Prior art keywords
conductor
groove
cap
electrode
high pressure
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
JP230981A
Other languages
Japanese (ja)
Inventor
Naoki Saito
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 JP230981A priority Critical patent/JPS57115753A/en
Publication of JPS57115753A publication Critical patent/JPS57115753A/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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To minimize the variation in lamp voltage by fusing an electrode conductor, the end of which is provied with an electrode, to the end of an emission tube, and forming a groove, which extends in the direction along the axis of the conductor and receives liquid metal remaining in the tube, on the conductor. CONSTITUTION:An end cap 2 is airtightly attached to the end of an emission tube container, which is made of polycrystal alumina, single crystal alumina or the like which has alkali resisting performance. An electrode conductor 4 penetrates almost the center of the cap 2. An electrode 5 is attached to the end of the conductor 4, which is provided with a groove 6, that extends in the direction along the axis of the conductor 4 and has a width of above 0.4mm. and a depth of above 0.4mm.. The end of the groove 6 is located within the cap 2 so that a liquid sodium amalgam generated during the lighting can be completely retained in the space formed between the groove 6 and the cap 2. Consequently, the variation in lamp voltage can be minimized.
JP230981A 1981-01-09 1981-01-09 High pressure metal vapor electric-discharge lamp Pending JPS57115753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP230981A JPS57115753A (en) 1981-01-09 1981-01-09 High pressure metal vapor electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP230981A JPS57115753A (en) 1981-01-09 1981-01-09 High pressure metal vapor electric-discharge lamp

Publications (1)

Publication Number Publication Date
JPS57115753A true JPS57115753A (en) 1982-07-19

Family

ID=11525746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP230981A Pending JPS57115753A (en) 1981-01-09 1981-01-09 High pressure metal vapor electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS57115753A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232851A (en) * 1986-04-02 1987-10-13 Iwasaki Electric Co Ltd Metal-vapor discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62232851A (en) * 1986-04-02 1987-10-13 Iwasaki Electric Co Ltd Metal-vapor discharge lamp

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