发明名称 |
DIMMER, LIGHTING DEVICE, AND ILLUMINATION CONTROL SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To supply power necessary for stable operation of a lighting device while transmitting a dimming signal through a power line. SOLUTION: A bidirectional thyristor T54 (a switching element) is interposed in the power line 811 for supplying AC power to the lighting device 300. A zero cross detection circuit 120 detects a zero cross of a voltage of the AC power supply AC. A switch control circuit 140 provides: a dimming degree instruction period in which a period for making conductive the bidirectional thyristor T54 and a period for insulating the bidirectional thyristor T54 are included in one half cycle period; and a power supply period in which the bidirectional thyristor T54 continues to be made conductive during the one half cycle period. COPYRIGHT: (C)2010,JPO&INPIT |
申请公布号 |
JP2010192267(A) |
申请公布日期 |
2010.09.02 |
申请号 |
JP20090035809 |
申请日期 |
2009.02.18 |
申请人 |
MITSUBISHI ELECTRIC CORP;MITSUBISHI ELECTRIC LIGHTING CORP |
发明人 |
OSHIMA YUICHI;SHIBAHARA SHINICHI;IWATSUBO KOKI;MINAGAWA RYOJI |
分类号 |
H05B37/02;H05B41/392 |
主分类号 |
H05B37/02 |
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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