发明名称 |
Discharge lamp lighting apparatus and lighting apparatus |
摘要 |
A discharge lamp lighting apparatus of the present invention includes an inverter to convert input DC voltage into high frequency voltage and supply the converted high frequency voltage to a discharge lamp having filaments, a preheating circuit to preheat the filaments of the discharge lamp, filament voltage detecting circuits to detect voltage applied between both ends of the filaments of the discharge lamp, and an output control circuit to control the inverter to stop or lower the output of high frequency voltage when the detected result of the filament voltage detecting circuit exceeds a specified value.
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申请公布号 |
US5939836(A) |
申请公布日期 |
1999.08.17 |
申请号 |
US19970982264 |
申请日期 |
1997.12.01 |
申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORP. |
发明人 |
MITA, KAZUTOSHI;SHIMIZU, KEIICHI;URATANI, KAZUYUKI;NAKAYA, FUMINORI |
分类号 |
H05B41/24;H05B41/298;(IPC1-7):G05F1/00 |
主分类号 |
H05B41/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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