Lighting device, head light and vehicle
    1.
    发明授权
    Lighting device, head light and vehicle 有权
    照明装置,头灯和车辆

    公开(公告)号:US09462647B2

    公开(公告)日:2016-10-04

    申请号:US15042610

    申请日:2016-02-12

    Abstract: A lighting device includes first to third output terminals, a power converter, a bypass switch, and a controller. A first light source is connected between the first and third output terminals. A second light source is connected between the second and third output terminals. The bypass switch is connected between the second and third output terminals. The controller switches the bypass switch between ON-state and OFF-state. The controller controls the power converter to adjust an output current. The controller includes a voltage meter for measuring a voltage corresponding to an output voltage of the power converter. The controller compares a measured voltage of the voltage meter with a first threshold voltage while keeping the bypass switch in OFF-state. The controller compares the measured voltage with a second threshold voltage while keeping the bypass switch in ON-state. The second threshold voltage is smaller than the first threshold voltage.

    Abstract translation: 照明装置包括第一至第三输出端子,功率转换器,旁路开关和控制器。 第一光源连接在第一和第三输出端之间。 第二光源连接在第二和第三输出端之间。 旁路开关连接在第二和第三输出端子之间。 控制器将旁路开关切换到ON状态和OFF状态。 控制器控制电源转换器调节输出电流。 控制器包括用于测量与功率转换器的输出电压相对应的电压的电压计。 控制器将电压表的测量电压与第一阈值电压进行比较,同时将旁路开关置于OFF状态。 控制器将测量的电压与第二阈值电压进行比较,同时保持旁路开关处于导通状态。 第二阈值电压小于第一阈值电压。

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