公开(公告)号：US20150382411A1

公开(公告)日：2015-12-31

申请号：US14741845

申请日：2015-06-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro KUMADA ,  Koji UENOYAMA ,  Miyo KANGYO

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/086 ,  H05B33/0818

Abstract: The lighting control device according to the present invention includes: a power supply for operating a light source including a first light source and a second light source lower in color temperature than the first light source; and a controller for controlling the power supply. The power supply includes: a first power supply for supplying power in a first range to the first light source; and a second power supply for supplying power in a second range to the second light source. The controller controls the first and second power supplies to adjust power supplied to the first light source and power supplied to the second light source so that a color temperature of the light source is equal to a color temperature which is selected from a predetermined color adjustment range as a desired value. The first range is lower in a lower limit than the second range.

Abstract translation: 根据本发明的照明控制装置包括：用于操作包括第一光源和比第一光源低的色温的第二光源的光源的电源; 以及用于控制电源的控制器。 电源包括：第一电源，用于向第一光源提供第一范围内的电力; 以及用于向第二光源提供第二范围内的电力的第二电源。 控制器控制第一和第二电源以调节提供给第一光源的电力和提供给第二光源的功率，使得光源的色温等于从预定颜色调整范围中选择的色温 作为期望值。 第一个范围低于第二个范围的下限。

公开(公告)号：US20150173152A1

公开(公告)日：2015-06-18

申请号：US14546772

申请日：2014-11-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro KUMADA

IPC: H05B37/02

CPC classification number: H05B37/02 ,  H05B33/0818 ,  H05B33/0851

Abstract: A lighting device includes a step-down chopper circuit and a controller configured to control the step-down chopper circuit. The controller is configured to turn on and off a low-side switching device in the step-down chopper circuit at a fixed frequency. The controller includes an operation unit configured to determine a reference voltage value, an output unit configured to output, as a difference signal, a difference between the reference voltage value determined by the operation unit and an average value of a voltage proportional to a current flowing through the switching device, and a control circuit configured to determine an on-time period of the switching device. The control circuit includes an oscillator configured to generate a voltage signal shaped like teeth of a saw. The control circuit is configured to determine the on-time period of the switching device based on the voltage signal and the difference signal.

Abstract translation: 照明装置包括降压斩波电路和被配置为控制降压斩波电路的控制器。 控制器被配置为以固定的频率打开和关闭降压斩波电路中的低侧开关装置。 所述控制器包括被配置为确定参考电压值的操作单元，输出单元，被配置为输出由所述操作单元确定的所述参考电压值与与电流流动成比例的电压的平均值作为差分信号 以及控制电路，被配置为确定开关装置的接通时间段。 该控制电路包括一个振荡器，该振荡器配置成产生一个像锯齿形的电压信号。 控制电路被配置为基于电压信号和差分信号来确定开关装置的接通时间周期。

公开(公告)号：US20180035507A1

公开(公告)日：2018-02-01

申请号：US15650880

申请日：2017-07-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro KUMADA ,  Shinichi MURAKAMI

IPC: H05B33/08 ,  G05F1/10 ,  H05B37/02

CPC classification number: H05B33/0848 ,  G05F1/10 ,  H05B33/0818 ,  H05B33/0845 ,  H05B33/0866 ,  H05B33/0884 ,  H05B37/02

Abstract: A constant current is configured to control an FET to adjust a drain current so that a detection voltage is equal to a reference voltage. A reference setter is configured to set the reference voltage to a sum of a first voltage and a second voltage. The first voltage is equal to a voltage developing across the detection resistor while a current, which has a same magnitude as a current supplied to the light source so that a current dimming level of the light source is equal to the dimming instruction value, flows through the detection resistor. The second voltage is equal to a voltage developing across the detection resistor while a second current, which has a same magnitude as a current flowing through the limiting resistor while the light source is on, flows through the detection resistor.

公开(公告)号：US20160262226A1

公开(公告)日：2016-09-08

申请号：US15044634

申请日：2016-02-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Miyo KANGYO ,  Koji WATANABE ,  Kazuhiro KUMADA ,  Shinichi MURAKAMI

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0845 ,  H05B33/0887 ,  H05B33/089 ,  H05B37/02 ,  Y02B20/346

Abstract: When supplying an LED light source with a first output voltage that is equal to or higher than a threshold voltage, an LED driver causes a DC power supply to output a first DC voltage and causes a switching regulator to supply the LED light source with the first output voltage. When supplying the LED light source with a second output voltage that is below the threshold voltage, the LED driver causes the DC power supply to output a second DC voltage lower than the first DC voltage and causes the dropper regulator to supply the LED light source with the second output voltage.

Abstract translation: 当提供等于或高于阈值电压的第一输出电压的LED光源时，LED驱动器使直流电源输出第一直流电压，并使开关调节器向第一 输出电压。 当将LED光源提供低于阈值电压的第二输出电压时，LED驱动器使直流电源输出低于第一直流电压的第二直流电压，并使滴管调节器向LED光源提供 第二个输出电压。

公开(公告)号：US20160192449A1

公开(公告)日：2016-06-30

申请号：US14974449

申请日：2015-12-18

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shinichi MURAKAMI ,  Koji WATANABE ,  Kazuhiro KUMADA ,  Miyo KANGYO

IPC: H05B33/08

CPC classification number: H05B33/0824 ,  H05B33/0815 ,  Y02B20/346

Abstract: A lighting device includes at least first and second lighting circuits configured to receive electric power from a single common DC power supply. First lighting circuit includes a first output capacitor connected between output ends thereof, and a first pre-charge circuit configured to keep a voltage across first output capacitor at a first voltage for first lighting circuit, while a first light source is in OFF state. Second lighting circuit includes a second output capacitor connected between output ends thereof, and a second pre-charge circuit configured to keep a voltage across second output capacitor at a second voltage for second lighting circuit, while a second light source is in OFF state. First and second voltages are set such that a difference between a forward voltage of first light source and the first voltage agrees with a difference between a forward voltage of second light source and the second voltage.

Abstract translation: 照明装置包括至少第一和第二照明电路，其被配置为从单个公共DC电源接收电力。 第一照明电路包括连接在其输出端之间的第一输出电容器和被配置为在第一光源处于截止状态时将第一输出电容器两端的电压保持在第一照明电路的第一电压的第一预充电电路。 第二照明电路包括连接在其输出端之间的第二输出电容器和第二预充电电路，第二预充电电路被配置为在第二光源处于截止状态时将第二输出电容器两端的电压保持在第二电压的第二电压。 第一和第二电压被设置为使得第一光源的正向电压和第一电压之间的差与第二光源的正向电压和第二电压之间的差一致。