SIGN BOARD FOR VEHICLE USING PIEZOELECTRIC HARVESTING

摘要

PURPOSE: An electronic display driving system for a vehicle using piezoelectric harvesting is provided to be able to operate an electronic display even though the ignition of a vehicle is turned off and tomaximize an advertisement effect. CONSTITUTION: An electronic display for a vehicle using piezoelectric harvesting(100) includes an electronic display(110), a piezoelectric device(120), a rectifying part(130), and a charging part(140). An electronic display is arranged on the exterior of a vehicle. A piezoelectric device is installed in a vehicle and converts vibration energy generated according to the driving of the vehicle into electric energy. A rectifying part is connected to a piezoelectric device electrically and rectifies electric energy generated through a piezoelectric device. A charging part stores the rectified electric energy. An electronic display is operated by using electric energy stored in a charging part. [Reference numerals] (110) Electronic display