发明名称 |
PROJECTION DISPLAY DEVICE |
摘要 |
A projection display device includes light source device including a plurality of lamp units; a plurality of lamp apertures disposed in main body cabinet such that the plurality of lamp units are replaced therethrough; a plurality of lamp covers for covering respective lamp apertures; four first detection switches for detecting opening and closing of respective lamp covers; and lamp control power source unit for supplying ballast control voltage signal to first detection switches. Four first detection switches are disposed on sub-circuit board. Sub-circuit board also includes conductive pattern for branching ballast control voltage signal input to first jack and leading the branched signal to first detection switches.
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申请公布号 |
US2013258291(A1) |
申请公布日期 |
2013.10.03 |
申请号 |
US201113992620 |
申请日期 |
2011.10.31 |
申请人 |
KOTANI KAZUNORI;SANYO ELECTRIC CO., LTD. |
发明人 |
KOTANI KAZUNORI |
分类号 |
G03B21/20;G03B21/16 |
主分类号 |
G03B21/20 |
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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