| 摘要 |
PROBLEM TO BE SOLVED: To provide a portable phone which is easier to use.MEANS FOR SOLVING THE PROBLEM: A portable phone comprises: a pair of bone conduction vibration parts provided at a pair of corner parts of an upper part thereof and having outer surfaces beveled into smooth convex surfaces; a sound source signal part; and a drive part which drives at least one of the pair of bone conduction vibration parts based upon a sound source signal from the sound source signal part. The pair of bone conduction vibration parts are elastic bodies respectively. The mobile phone further has elastic bodies provided at a pair of corner parts of a lower part thereof, and having outer surfaces beveled into smooth convex surfaces. A bone conduction vibration part has a piezoelectric bimorph element or electromagnetic type vibrator. The drive part drives the pair of bone conduction vibration parts respectively based upon the sound source signal from the sound source signal part. The mobile phone also has an environmental noise detection part, and the drive part drives the pair of bone conduction vibration parts with mutually inverted waveforms based upon the sound source signal from the sound source signal part when environmental noise detected by the environmental noise detection part is equal to or lower than predetermined.SELECTED DRAWING: Figure 78 |
