DISCHARGE LAMP-LIGHTING DEVICE, AND LIGHTING FIXTURE

申请公布号：JP2011138719(A)

申请号：JP20090299219

申请日期：2009.12.29

申请公布日期：2011.07.14

申请人：

MITSUBISHI ELECTRIC CORP;MITSUBISHI ELECTRIC LIGHTING CORP

发明人：WADA NAOKI;NISHIKAWA HIROAKI

分类号：H05B41/24

主分类号：H05B41/24

摘要：PROBLEM TO BE SOLVED: To provide a discharge lamp-lighting device capable of supplying DC bias voltage to a discharge lamp at suitable timing and preventing moving stripes generated during lighting of the discharge lamp. SOLUTION: High-frequency rectangular wave voltage V2 is input from a connection point x2 of a pair of switching elements Q1, Q2 provided in a switching circuit 14 in a DC voltage circuit 23 of the discharge lamp-lighting device 10. The DC voltage circuit 23 generates DC bias voltage V3 from the input high-frequency rectangular wave voltage V2. Then, the DC voltage circuit 23 applies the generated bias voltage V3 to a connection point x4 between a lamp 22 and a coupling capacitor C1 of a series resonance circuit 15. COPYRIGHT: (C)2011,JPO&INPIT

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