JPS5541692A - High voltage sodium lamp - Google Patents
High voltage sodium lampInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4833679A (en) * | 1971-09-03 | 1973-05-11 |
-
1979
- 1979-08-31 JP JP11223479A patent/JPS5541692A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4833679A (en) * | 1971-09-03 | 1973-05-11 |
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