| 摘要 |
<p>PURPOSE: An automatic lamp is provided to prevent unnecessary power consumption in a standby state by operating a control unit and a sensor with a storage battery. CONSTITUTION: A lamp(10) is connected to an external power source through a power line(30). A power switch(40) is arranged in a power line. A sensor(50) senses the surrounding brightness and the movement of a peripheral object. A control unit(60) turns on and off the power switch according to the signal of the sensor. A charging circuit is connected to the power line. A storage battery supplies electricity to the control unit and the sensor. A current sensor outputs the signal according to the application of external power.</p> |
