JPS5535407A - Manufacturing method of luminescent tube for metal halide lamp - Google Patents
Manufacturing method of luminescent tube for metal halide lampInfo
- Publication number
- JPS5535407A JPS5535407A JP10719578A JP10719578A JPS5535407A JP S5535407 A JPS5535407 A JP S5535407A JP 10719578 A JP10719578 A JP 10719578A JP 10719578 A JP10719578 A JP 10719578A JP S5535407 A JPS5535407 A JP S5535407A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- luminescent
- gas
- metal halide
- complex compound
- 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 improve the productivity of manufacture of luminescent tubes for metal halide lamps by fhishing the extraction of a gas of a eutectic mixture of a complex compound in a single process in the manufacture of luminescent tubes for metal halide lamps.
CONSTITUTION: A luminescent tube 1 is connected to a vacuum system through an exhaust pipe 6 to make a high vacuum. The tube 1 is heated to expell the gas remaining in the tube 1, then cooled to room temperature one. A complex compound 9 composed of natrium iodide and scandium iodide in a molecular ration of approximately 2 to 1 and metallic scandium 4 are put in the tube 1. Thereafter, the tube 1 is put in an electric furnace 5 where it is heated for three minutes to perform gas extraction refining of the complex compound 9. During the heating in the electric furnace 5, the exhaust pipe 6 is cooled at a cooling section 7 by the air from a cooling air pipe 8. After the gas extraction refining, a fixed amount of mercury and a fixed amount of a halide gas, such as Ar, are introduced into the tube 1 and the tube 1 is sealed and cut at a part above the cooling section 7 thus completing a luminescent tube 1.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10719578A JPS5535407A (en) | 1978-09-01 | 1978-09-01 | Manufacturing method of luminescent tube for metal halide lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10719578A JPS5535407A (en) | 1978-09-01 | 1978-09-01 | Manufacturing method of luminescent tube for metal halide lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5535407A true JPS5535407A (en) | 1980-03-12 |
Family
ID=14452878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10719578A Pending JPS5535407A (en) | 1978-09-01 | 1978-09-01 | Manufacturing method of luminescent tube for metal halide lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5535407A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4643690A (en) * | 1983-05-10 | 1987-02-17 | North American Philips Electric Corporation | Method of manufacturing metal halide lamp |
-
1978
- 1978-09-01 JP JP10719578A patent/JPS5535407A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4643690A (en) * | 1983-05-10 | 1987-02-17 | North American Philips Electric Corporation | Method of manufacturing metal halide lamp |
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