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    • 1. 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。
    • 2. 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
    • US20120153863A1
    • 2012-06-21
    • US13324219
    • 2011-12-13
    • Katunobu HAMAMOTOMasafumi YAMAMOTOKeisuke UEDAHisaya TAKIKITA
    • Katunobu HAMAMOTOMasafumi YAMAMOTOKeisuke UEDAHisaya TAKIKITA
    • H05B37/02
    • H05B33/0815
    • An LED lighting device includes a converter for converting a power source voltage into a DC voltage and outputting it to an LED unit; and a controller for controlling an output of the converter. The converter has a chopper circuit including a series circuit of an inductance element and a capacitor; a switching element connected to the inductance element in series and turned on/off by the controller; and a diode as discharging path of the inductance element during an OFF state of the switching element. The controller controls an on/off time of the switching element such that a current supplied to the LED unit during a specific time period after a lighting operation is started becomes smaller than a current supplied to the LED unit in a steady state by using a voltage generated in a secondary coil of the inductance coil as an operating voltage thereof.
    • LED照明装置包括用于将电源电压转换为直流电压并将其输出到LED单元的转换器; 以及用于控制转换器的输出的控制器。 该转换器具有包括电感元件和电容器的串联电路的斩波电路; 串联连接到电感元件并由控制器导通/断开的开关元件; 以及作为开关元件的OFF状态期间的电感元件的放电路径的二极管。 控制器控制开关元件的开/关时间,使得在点亮操作开始之后的特定时间段期间提供给LED单元的电流变得比通过使用电压在稳定状态下提供给LED单元的电流小 在电感线圈的次级线圈中产生的电感线圈作为其工作电压。