JPS5541692A - High voltage sodium lamp - Google Patents

High voltage sodium lamp

Info

Publication number
JPS5541692A
JPS5541692A JP11223479A JP11223479A JPS5541692A JP S5541692 A JPS5541692 A JP S5541692A JP 11223479 A JP11223479 A JP 11223479A JP 11223479 A JP11223479 A JP 11223479A JP S5541692 A JPS5541692 A JP S5541692A
Authority
JP
Japan
Prior art keywords
luminous tube
amount
mercury
end part
prescribed
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
JP11223479A
Other languages
Japanese (ja)
Inventor
Kenji Takatsuka
Haruo Furukubo
Yasaburo Takeji
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 JP11223479A priority Critical patent/JPS5541692A/en
Publication of JPS5541692A publication Critical patent/JPS5541692A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make the promotion of improvement of the reliability for unsaturated vapor pressure type lamp in a simple method, by coating to install a prescribed thermal insulator to outer face of the luminous tube end part, as well as by specifying the amount of sodium and mercury, to be filled in the luminous tube, to a slight amount.
CONSTITUTION: In the interior of a light permeable alumina tube 1, having an electrode 4, 4' made of W in the inside end part, are sealed Na of 0.007W0.071mg and Hg of 0.054W0.9mg per 1cm3 of its internal volume. And to the outer face of end part of the luminous tube 1, is tightened a metal band 6 as a thermal insulator through a heat-proof buffer material 5. For sealing the above described slight amount of Na, a sealed material vessel, with a prescribed amount of NaN3 solution filled and the solvent vaporized, is installed in a portion linked to within the luminous tube, with this part heated in inactive ambience or in vacuum to cause thermodecomposition. And to seal the mercury, a prescribed amount of Al-Zr-Hg alloy is placed in the sealed material vessel, then with this vessel linked to within the luminous tube, and heated in the vacuum to make the mercury separated.
COPYRIGHT: (C)1980,JPO&Japio
JP11223479A 1979-08-31 1979-08-31 High voltage sodium lamp Pending JPS5541692A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11223479A JPS5541692A (en) 1979-08-31 1979-08-31 High voltage sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11223479A JPS5541692A (en) 1979-08-31 1979-08-31 High voltage sodium lamp

Publications (1)

Publication Number Publication Date
JPS5541692A true JPS5541692A (en) 1980-03-24

Family

ID=14581590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11223479A Pending JPS5541692A (en) 1979-08-31 1979-08-31 High voltage sodium lamp

Country Status (1)

Country Link
JP (1) JPS5541692A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833679A (en) * 1971-09-03 1973-05-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833679A (en) * 1971-09-03 1973-05-11

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