公开(公告)号：US09485822B2

公开(公告)日：2016-11-01

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: H05B37/00 ,  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; 以及第二预充电电路，其被配置为在第二光源处于OFF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。

公开(公告)号：US09648683B2

公开(公告)日：2017-05-09

申请号：US15258132

申请日：2016-09-07

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Miyo Kangyo

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0827 ,  H05B33/0845 ,  Y02B20/346

Abstract: A lighting device includes a switching circuit configured to supply a supply voltage to each of a plurality of light sources by time division. The lighting device includes a variable control circuit configured to supply a continuous DC supply voltage to each of the light sources. The lighting device includes a controller. The controller includes a first control function of controlling the switching circuit. The controller includes a second control function of controlling the variable control circuit. The controller is configured to select either the first control function or the second control function for each of the light sources.

公开(公告)号：US09655194B2

公开(公告)日：2017-05-16

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

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.

公开(公告)号：US09521717B2

公开(公告)日：2016-12-13

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 ,  H05B37/02

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。