Road lamp system for performing piezoelectric power generation by using sound energy

The invention discloses a road lamp system for performing piezoelectric power generation by using sound energy. The road lamp system comprises sound energy piezoelectric power generation devices, electric energy exchange devices, storage batteries and the road lamp system. The sound energy piezoelectric power generation devices are arranged on two sides of a road; and the sound energy piezoelectric power generation devices generate power by using various noises on the road. The electric energy exchange devices convert the alternating current produced by the sound energy piezoelectric power generation devices into direct current, and the converted direct current is stored in the storage batteries and is loaded and used by the lamp on the road. The road lamp system for performing piezoelectric power generation by using the sound energy generates energy by fully using noises on the road, turns waste into wealth and is a big energy-saving and environment-friendly measure.