| 摘要 |
PURPOSE: A charged signal OLED is provided to automatically turn on a traffic light when necessary by sending the current of the state of the traffic light in real time through a sensor. CONSTITUTION: An OLED traffic signal comprises a traffic signal, a battery charger, and a controller(1). The battery charger is charged by electricity. The controller turns on the traffic signal by a chargeable battery(2). A wireless power apparatus charges the battery.
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