Discharge lamp lighting device |
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| 申请号 | JP28694187 | 申请日 | 1987-11-13 | 公开(公告)号 | JPH01130498A | 公开(公告)日 | 1989-05-23 |
| 申请人 | Mitsubishi Electric Corp; | 发明人 | SHIMIZU KAZUTAKA; | ||||
| 摘要 | PURPOSE:To enhance the safety, make a balancer in small size and at a low cost by sensing the temp. of balancer, and stopping operation of a high frequency power supply device at a specified value of sensed temp. CONSTITUTION:A thermal switch 9 in On condition at the time of normally lighting up, to be put off when the temp. of balancer 7 has risen at the emitterless condition of the last period of its life, and thus the input circuit for an inverter 4 is shut off to stop operation of a high frequency power supply device 2. Sensing of temp. rise of the balancer 7 and stopping of high frequency power supply device in this manner prevents excessive temp. rise of the balancer at the last period of the life of a discharge lamp. This enhances the safety and accomplishes balancer 7 is small size and at low cost. | ||||||
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| 说明书全文 | |||||||
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