| 摘要 |
A headphone is disclosed that includes a headband and a pair of sound emitting units. The headband is a band-shaped body that is curved in an arch shape. The sound emitting units each have a flat shape and are disposed at both ends of the headband. The sound emitting units each include a piezoelectric actuator of a flat film shape disposed on a flat plane of a sound emission housing of a flat shape. The piezoelectric actuator includes a piezoelectric film made of an organic piezoelectric material such as PLLA, and first and second driving conductors disposed on opposing principal planes of the piezoelectric film. |
