JPS5684863A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS5684863A
JPS5684863A JP16124479A JP16124479A JPS5684863A JP S5684863 A JPS5684863 A JP S5684863A JP 16124479 A JP16124479 A JP 16124479A JP 16124479 A JP16124479 A JP 16124479A JP S5684863 A JPS5684863 A JP S5684863A
Authority
JP
Japan
Prior art keywords
sealing part
electrode axis
lamp
metal halide
halide 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
JP16124479A
Other languages
Japanese (ja)
Inventor
Katsuo Otsuka
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 JP16124479A priority Critical patent/JPS5684863A/en
Publication of JPS5684863A publication Critical patent/JPS5684863A/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
    • H01J61/366—Seals for leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To diminish the generation of cracks, and increase the life of a metal halide lamp, by restricting to given values the diameter of the electrode axis of the lamp whose sealing part has a circular cross section, and length of buried parts of the same axis. CONSTITUTION:The ends of a bulb 2 made of quartz glass is heated and softened, and a gradual fusion of each end of the quartz glass is effected by taking advantage of the pressure difference, thus a sealing part 3 having a circular cross section being formed. A metal-foil conductor 4 made of Mo or the like, which is connected to an electrode axis 6, is fitted within the sealing part 3. Here, the outer diameter, dmm., of the electrode axis 6 should be 0.7<=d<=2.0, and the length, lmm., of the buried part of the electrode axis inside the sealing part 3 should be d<2>+4<=l<=5d+4. Through the means mentioned above, the generation of cracks is diminished, and the life of the lamp can be lengthened.
JP16124479A 1979-12-12 1979-12-12 Metal halide lamp Pending JPS5684863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16124479A JPS5684863A (en) 1979-12-12 1979-12-12 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16124479A JPS5684863A (en) 1979-12-12 1979-12-12 Metal halide lamp

Publications (1)

Publication Number Publication Date
JPS5684863A true JPS5684863A (en) 1981-07-10

Family

ID=15731380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16124479A Pending JPS5684863A (en) 1979-12-12 1979-12-12 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS5684863A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038379B2 (en) 2000-03-13 2006-05-02 Nec Microwave Tube, Ltd. High pressure discharge lamp and method for sealing a bulb thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128179A (en) * 1975-04-30 1976-11-08 Iwasaki Electric Co Ltd Discharge lamp manufacturing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51128179A (en) * 1975-04-30 1976-11-08 Iwasaki Electric Co Ltd Discharge lamp manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7038379B2 (en) 2000-03-13 2006-05-02 Nec Microwave Tube, Ltd. High pressure discharge lamp and method for sealing a bulb thereof

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