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    • 8. 发明申请
    • LED LIGHTING DEVICE AND ILLUMINATION APPARATUS INCLUDING SAME
    • LED照明装置和照明装置,包括它们
    • US20120161649A1
    • 2012-06-28
    • US13326386
    • 2011-12-15
    • Katunobu HAMAMOTOMasafumi YAMAMOTOKeisuke UEDAHisaya TAKIKITA
    • Katunobu HAMAMOTOMasafumi YAMAMOTOKeisuke UEDAHisaya TAKIKITA
    • H05B37/02
    • H05B33/0887
    • An LED lighting device includes a power converter for outputting a variable output voltage, two LED lamps being connected in series between output terminals of the power converter; a current detector for detecting an output current from the power converter; a first detector for detecting the output voltage of the power converter and generating a first detection voltage corresponding to the output voltage; a second detector for detecting an applied voltage to one of the two LED lamps and generating a second detection voltage corresponding to the applied voltage; and a controller for controlling the power converter to adjust the output voltage to thereby make the output current coincide with a target value. The controller controls the power converter to decrease the output voltage if at least one of the second detection voltage and the deference between the first and the second detection voltage does not fall within a range.
    • LED照明装置包括用于输出可变输出电压的功率转换器,串联连接在功率转换器的输出端之间的两个LED灯; 电流检测器,用于检测来自功率转换器的输出电流; 第一检测器,用于检测功率转换器的输出电压并产生对应于输出电压的第一检测电压; 第二检测器,用于检测施加的电压到两个LED灯中的一个,并产生对应于所施加的电压的第二检测电压; 以及控制器,用于控制功率转换器来调节输出电压,从而使输出电流与目标值一致。 如果第二检测电压和第一和第二检测电压之间的差异中的至少一个不在一个范围内,则控制器控制功率转换器来降低输出电压。