JPS6411466A - Device for stabilizing light emission of fluorescent lamp - Google Patents
Device for stabilizing light emission of fluorescent lampInfo
- Publication number
- JPS6411466A JPS6411466A JP62166572A JP16657287A JPS6411466A JP S6411466 A JPS6411466 A JP S6411466A JP 62166572 A JP62166572 A JP 62166572A JP 16657287 A JP16657287 A JP 16657287A JP S6411466 A JPS6411466 A JP S6411466A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- fluorescent lamp
- heater
- switch
- conduction
- 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
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To always obtain the stable light emission characteristic of a fluorescent lamp, by providing a heater and a temperature switch which controls a temperature to energize the heater intermittently at a constant level regulated in advance, and maintaining the tube temperature of the fluorescent lamp at the level exceeding a prescribed temperature. CONSTITUTION:When the fluorescent lamp 1 begins to be energized and to emit light, the tube temperature rises by heat generation due to emission. Therefore, when the temperature is kept at the level exceeding the temperature to stabilize the emission characteristic by self-heating after starting emission, the temperature switch 3 is maintained at an open state. Meanwhile, when the main switch of an image scanner is turned ON while the fluorescent lamp 1 is not energized, the temperature switch 3 detects the tube temperature of the fluorescent lamp 1, and conduction to the heater 2 is controlled intermittently. Thereby, the emission characteristic of the fluorescent lamp 1 can be maintained at a stable tube temperature. Furthermore, when a state where it is impossible to cut off the conduction to the heater 2 due to the fault of the temperature switch 3 is generated and the tube temperature rises abnormally, a temperature fuse 4 is melt, then, the conduction to the heater 2 can be interrupted.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166572A JPS6411466A (en) | 1987-07-03 | 1987-07-03 | Device for stabilizing light emission of fluorescent lamp |
US07/888,460 US5189340A (en) | 1987-07-03 | 1992-05-19 | Fluorescent lamp assebmly for image scanner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62166572A JPS6411466A (en) | 1987-07-03 | 1987-07-03 | Device for stabilizing light emission of fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6411466A true JPS6411466A (en) | 1989-01-17 |
Family
ID=15833750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62166572A Pending JPS6411466A (en) | 1987-07-03 | 1987-07-03 | Device for stabilizing light emission of fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6411466A (en) |
-
1987
- 1987-07-03 JP JP62166572A patent/JPS6411466A/en active Pending
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