JPS5463570A - Method of manufacturing fluorescent lamp - Google Patents
Method of manufacturing fluorescent lampInfo
- Publication number
- JPS5463570A JPS5463570A JP12927277A JP12927277A JPS5463570A JP S5463570 A JPS5463570 A JP S5463570A JP 12927277 A JP12927277 A JP 12927277A JP 12927277 A JP12927277 A JP 12927277A JP S5463570 A JPS5463570 A JP S5463570A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- gas
- seconds
- energized
- evacuating
- 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
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE: To improve the lamp characteristics of a fluorescent lamp by increasing the conducting current of an electrode filament at inert gas evacuating side larger than that of the filament at inert gas feeding side to exactly and sufficiently execute the arc discharge of the filament at the evacuating side and also to exactly decompose and activate the cathode materials at both ends.
CONSTITUTION: A bulb 1 is evacuated to vacuum by an evacuating unit 12, and is fed with Ar gas by a gas supplying unit 11. The electrode filament 6 at the Ar gas feeding side is energized by the current of 800mA for two seconds after two seconds upon starting of the gas feeding, of 700mA for two seconds, and of 600mA for two seconds so as to decompose and activate the cathode material 8. The electrode filament 7 at the gas evacuating side is also energized similarly in cycle to that of the filament 6. However, the filament 7 is energized with the same current first and second times as that of the gas feeding side, and is energized then with increased current third time by 1.1 to 1.5 times, namely, 660mA to 900mA as compared with that at the gas feeding side.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12927277A JPS5463570A (en) | 1977-10-28 | 1977-10-28 | Method of manufacturing fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12927277A JPS5463570A (en) | 1977-10-28 | 1977-10-28 | Method of manufacturing fluorescent lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5463570A true JPS5463570A (en) | 1979-05-22 |
JPS618532B2 JPS618532B2 (en) | 1986-03-14 |
Family
ID=15005474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12927277A Granted JPS5463570A (en) | 1977-10-28 | 1977-10-28 | Method of manufacturing fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5463570A (en) |
-
1977
- 1977-10-28 JP JP12927277A patent/JPS5463570A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS618532B2 (en) | 1986-03-14 |
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