JPS5598451A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPS5598451A JPS5598451A JP679979A JP679979A JPS5598451A JP S5598451 A JPS5598451 A JP S5598451A JP 679979 A JP679979 A JP 679979A JP 679979 A JP679979 A JP 679979A JP S5598451 A JPS5598451 A JP S5598451A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- substance
- less
- lamp
- luminous flux
- 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
Landscapes
- Discharge Lamp (AREA)
Abstract
PURPOSE: To obtain a lamp which has less rise in starting voltage and less deterioration in luminous flux as well as to improve adhesion of radioactive substance to the electrode constituting material by using electrode having electron irradiating substance which contains thorium oxide, lanthanum oxide.
CONSTITUTION: Electron irradiating substance 21 which contains thorium oxide and lanthanum oxide is coated on electrode core wires 18 composed of heat resistive metal, such as tungsten, etc. and the surfaces of internal coil 19 and external coil 20 convolved around the electrode core wires, which is tightly fixed under hot heat. Use of this electrode inside the light emitting tube improves remarkably adhesion of electron irradiating substance to the electrode constituting material, and offers a lamp with long life which has no occurrence of peeling off irradiating substance, less starting voltage and less deterioration in luminous flux.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP679979A JPS5598451A (en) | 1979-01-23 | 1979-01-23 | Metal halide lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP679979A JPS5598451A (en) | 1979-01-23 | 1979-01-23 | Metal halide lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5598451A true JPS5598451A (en) | 1980-07-26 |
Family
ID=11648218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP679979A Pending JPS5598451A (en) | 1979-01-23 | 1979-01-23 | Metal halide lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5598451A (en) |
-
1979
- 1979-01-23 JP JP679979A patent/JPS5598451A/en active Pending
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