JPS6484565A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS6484565A
JPS6484565A JP24169687A JP24169687A JPS6484565A JP S6484565 A JPS6484565 A JP S6484565A JP 24169687 A JP24169687 A JP 24169687A JP 24169687 A JP24169687 A JP 24169687A JP S6484565 A JPS6484565 A JP S6484565A
Authority
JP
Japan
Prior art keywords
light emitting
tube
emitting tube
inside diameter
ceramic tube
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.)
Granted
Application number
JP24169687A
Other languages
Japanese (ja)
Other versions
JP2578611B2 (en
Inventor
Haruo Furukubo
Yasaburo Takeji
Tomiki Inagaki
Shigeyuki Mori
Toshiyoshi Nomura
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.)
Japan Storage Battery Co Ltd
Original Assignee
Japan Storage Battery 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 Japan Storage Battery Co Ltd filed Critical Japan Storage Battery Co Ltd
Priority to JP62241696A priority Critical patent/JP2578611B2/en
Publication of JPS6484565A publication Critical patent/JPS6484565A/en
Application granted granted Critical
Publication of JP2578611B2 publication Critical patent/JP2578611B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To realize high efficiency and high reliability at low watt by thinning the end inside diameter of a translucent ceramic tube as compared with the central part inside diameter and in addition specifying the clearance between a conductor projected inside a light emitting tube and a ceramic tube, and the length of the light emitting tube in the axial direction. CONSTITUTION:A part of each bar-shaped conductor 4, 4' which hold conductive metal as one body inside ceramics is projected into inside of a light emitting tube and end part inside diameter of a ceramic tube 1 is thinned as compared with the central part inside diameter. Heat capacity of the end part and a seal part can be made small, and heating by a heater at the time of sealing can be done easily and in addition sealing ability can be improved. Further, clearance A between conductors 4, 4' projected toward the light emitting tube and a translucent ceramic tube 1 is set within the range of 0.2-2.5mm, and the length B of the light emitting tube in the axial direction that meet this range is set to 3mm or more. Hereby, the cooling part temperature can be elevated and vapor pressure of the charged substance, elevated and lamp efficiency, improved.
JP62241696A 1987-09-26 1987-09-26 Metal vapor discharge lamp Expired - Fee Related JP2578611B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62241696A JP2578611B2 (en) 1987-09-26 1987-09-26 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62241696A JP2578611B2 (en) 1987-09-26 1987-09-26 Metal vapor discharge lamp

Publications (2)

Publication Number Publication Date
JPS6484565A true JPS6484565A (en) 1989-03-29
JP2578611B2 JP2578611B2 (en) 1997-02-05

Family

ID=17078163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62241696A Expired - Fee Related JP2578611B2 (en) 1987-09-26 1987-09-26 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JP2578611B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193547A (en) * 1984-10-15 1986-05-12 Matsushita Electronics Corp High pressure sodium vapor lamp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6193547A (en) * 1984-10-15 1986-05-12 Matsushita Electronics Corp High pressure sodium vapor lamp

Also Published As

Publication number Publication date
JP2578611B2 (en) 1997-02-05

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