公开(公告)号：US10024514B2

公开(公告)日：2018-07-17

申请号：US15053851

申请日：2016-02-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoshihiko Kanayama ,  Hiro Aoki ,  Tomoyuki Ogata ,  Masashi Kichima ,  Makoto Kai

IPC: B60Q1/00 ,  F21S8/10 ,  F21S41/143 ,  F21S41/147 ,  F21S41/20 ,  F21S41/24 ,  F21S41/265 ,  F21S41/32 ,  F21S41/33 ,  F21S41/36 ,  F21S41/43 ,  F21S41/663 ,  F21S45/47

Abstract: A lighting apparatus to be installed on a mobile object includes: a heat dissipator having a first outer surface and a second outer surface different from the first outer surface; a first light-emitting device thermally coupled to the first outer surface of the heat dissipator; a second light-emitting device thermally coupled to the second outer surface of the heat dissipator; a reflector that reflects light emitted from the first light-emitting device; a first lens that is disposed in a path of light reflected by the reflector and that transmits the light from the reflector along a predetermined lighting direction; and a second lens disposed in a path of light from the second light-emitting device.

公开(公告)号：US09220160B2

公开(公告)日：2015-12-22

申请号：US14646581

申请日：2013-10-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masahiro Nishikawa ,  Masatoshi Ueno ,  Kazuya Kato ,  Masashi Kichima

IPC: H05B37/02 ,  H05B41/24 ,  H05B41/36 ,  H05B41/292 ,  H05B41/288

CPC classification number: H05B41/2926 ,  H05B41/2886 ,  H05B41/2887 ,  H05B41/2925

Abstract: Control unit decreases power to be supplied to high-pressure discharge lamp when an output voltage or an output current for high-pressure discharge lamp measured by measurement unit is in an abnormal range. Drive unit driving switching element includes capacitor that supplies, to a control electrode of switching element disposed on high potential side, electric charge necessary for turning on switching element disposed on high potential side when switching element disposed on low potential side is turned off. When high-pressure discharge lamp is started up, a discharge lamp lighting device starts to charge capacitor before DC/DC converter is started to operate, and control unit has a determination period for determining presence/absence of an abnormality based on a measured value acquired by measurement unit in a state in which DC/DC converter and DC/AC inverter are operated after completion of charging of capacitor.

Abstract translation: 当由测量单元测量的高压放电灯的输出电压或输出电流处于异常范围时，控制单元降低供应给高压放电灯的功率。 驱动单元驱动开关元件包括电容器，其将设置在高电位侧的开关元件的控制电极提供给设置在低电位侧的开关元件断开时用于接通设置在高电位侧的开关元件所需的电荷。 当高压放电灯启动时，在DC / DC转换器开始运行之前，放电灯点亮装置开始对电容器充电，并且控制单元具有基于所获得的测量值来确定异常的存在/不存在的确定周期 由DC / DC转换器和DC / AC变换器在电容器充电完成后进行动作的状态。

公开(公告)号：US09376056B2

公开(公告)日：2016-06-28

申请号：US14438623

申请日：2013-10-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masatoshi Ueno ,  Toshiaki Nakamura ,  Kazuya Kato ,  Masashi Kichima ,  Masahiro Nishikawa

IPC: H05B37/02 ,  H05B39/04 ,  H05B41/16 ,  B60Q3/00 ,  H02M7/48 ,  H02H3/24 ,  H02H7/122 ,  H02H3/16 ,  H02M3/155 ,  H02M1/00 ,  G01R31/02

CPC classification number: B60Q3/00 ,  G01R31/025 ,  H02H3/16 ,  H02H3/243 ,  H02H7/122 ,  H02H7/1225 ,  H02M3/155 ,  H02M7/48 ,  H02M2001/007

Abstract: A power supply device includes a DC power supply circuit configured to output DC power, and a ground-fault determining circuit configured to determine presence or absence of a ground fault at a post-stage of the DC power supply circuit. The ground-fault determining circuit includes a capacitor having an end that is connected with ground, and a diode including an anode and a cathode. The anode is connected with another end of the capacitor, and the cathode is connected with an output end on a high voltage side of the DC power supply circuit. The ground-fault determining circuit further includes a constant voltage source configured to charge the capacitor with a prescribed charging voltage, and a comparator as a determining portion configured to determine presence of the ground fault when a voltage across the capacitor falls below a prescribed determination reference voltage lower than the prescribed charging voltage.

Abstract translation: 电源装置包括：配置为输出直流电力的直流电源电路;以及接地故障判定电路，被配置为确定直流电源电路的后级的接地故障的存在与否。 接地故障确定电路包括具有与地连接的端部的电容器和包括阳极和阴极的二极管。 阳极与电容器的另一端连接，阴极与直流电源电路的高压侧的输出端连接。 接地故障判定电路还包括被配置为以规定的充电电压对电容器充电的恒定电压源，以及作为确定部分的比较器，其被配置为当电容器两端的电压低于规定的确定基准时确定接地故障的存在 电压低于规定的充电电压。