SPEAKER DEVICE

摘要

The present invention enhances acoustic conversion efficiency and improves sound quality. A speaker device is provided with: an oscillating element that expands and contracts in accordance with a drive signal; two oscillating bodies that are positioned on opposite sides from each other with the oscillating element therebetween, that are arranged so the individual end surfaces thereof are in contact with both of the ends of the oscillating element in the expansion/contraction direction thereof, and that are made to oscillate by expansion and contraction of the oscillating element; and a biasing spring that biases the two oscillating bodies so the individual end surfaces are pressed against both of the ends. As a result, the individual end surfaces of the two oscillating bodies are biased by the biasing spring and the oscillating bodies are made to oscillate by the expansion and contraction of the oscillating element while in contact with both of the ends of the oscillating element in the expansion/contraction direction thereof, thus making it possible to enhance acoustic conversion efficiency and improve sound quality.