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    • 2. 发明授权
    • Automotive vehicle daytime running light circuit
    • 汽车白天行车灯电路
    • US4949012A
    • 1990-08-14
    • US223817
    • 1988-07-25
    • W. T. IrickJames L. RousseyMerrill D. Miller
    • W. T. IrickJames L. RousseyMerrill D. Miller
    • B60Q1/14
    • B60Q1/143B60Q2300/116B60Q2400/30
    • A daytime running light circuit is integrated with the existing headlight circuit of an automotive vehicle. The daytime running light circuit functions to automatically illuminate the headlights at reduced intensity when the vehicle is running and the headlight switch is turned off. Any time, however, that the headlight switch is turned on, the headlights are illuminated at full intensity. The daytime running light circuit comprises a day relay and a night relay. The night relay is responsive to the headlight switch being turned on for preventing operation of the daytime relay which would otherwise illuminate the headlamps at reduced intensity if the vehicle were running and the headlight switch off. When the headlight switch is off, the night relay enables the day relay to be operated whenever the vehicle is running. Indication that the vehicle is running is obtained from the alternator "R" terminal. The alternator "R" terminal signal may be further conditioned by sensing the status of one or more devices on the vehicle, such as the parking brakes or transmission, so that the day relay is operated by the alternator "R" terminal voltage signal only if all these one or more other devices indicate that the vehicle is not incapable of motion.
    • 白天行车灯电路与汽车的现有头灯电路集成在一起。 白天行车灯电路用于在车辆行驶时和前照灯开关关闭时自动照亮前照灯。 然而,任何时候,头灯开关都打开,前灯以全强度照亮。 日间行车灯电路包括日间继电器和夜间继电器。 夜间继电器响应于前照灯开关被接通以防止白天继电器的操作,否则如果车辆行驶并且前灯关闭,否则会以降低的强度照亮前照灯。 当大灯开关关闭时,夜间继电器可以在车辆运行时使日间继电器工作。 车辆运行的指示是从交流发电机“R”端子获得的。 可以通过感测车辆上的一个或多个设备的状态(例如驻车制动器或变速器)来进一步调节交流发电机“R”端子信号,使得日间继电器仅由交流发电机“R”端电压信号操作 所有这些一个或多个其他装置指示车辆不能运动。