发明名称 |
LIGHTING DEVICE AND LUMINAIRE |
摘要 |
PROBLEM TO BE SOLVED: To prevent a lighting device from erroneously outputting power for light source lighting when a light source module is not connected.SOLUTION: A step-down chopper circuit 41 turns on/off a switching element Q1 to regulate a voltage of power supplied from a step-up chopper circuit 31 to a predetermined voltage. A connection detection determination IC 52 determines whether an LED module 12 is connected to the step-down chopper circuit 41 on the basis of a voltage output from a parallel circuit of a smoothing capacitor C1 and a resistor RP. A step-down chopper control IC 42 turns on/off the switching element Q1 of the step-down chopper circuit 41 when a predetermined period elapses after the start of power supply from the step-up chopper circuit 31 and if the connection detection determination IC 52 determines that the LED module 12 having a resistor RL for connection detection is connected to the step-down chopper circuit 41. |
申请公布号 |
JP2014099383(A) |
申请公布日期 |
2014.05.29 |
申请号 |
JP20120251775 |
申请日期 |
2012.11.16 |
申请人 |
MITSUBISHI ELECTRIC CORP;MITSUBISHI ELECTRIC CORP |
发明人 |
NISHIKAWA HIROAKI;SHIBAHARA SHINICHI;FUNAYAMA SHINSUKE |
分类号 |
H05B37/02;H05B37/04 |
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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