| 摘要 |
<p>A cellular phone provided with a bone conduction speaker is characterized by its meatus closing means for closing an external acoustic meatus of a user's ear to enable the user to clearly catch sound issued from the bone conduction speaker even in a high-noisy environment without using any earplug, provided that the sound of the bone conduction speaker is set in pressure level so as to be slightly higher than sound issued from an ordinary air conduction speaker used in the current cellular phone. The closing means may be separately or integrally formed from or with the bone conduction speaker. In order to close an opening of the external acoustic meatus, the meatus closing means may be inserted into the external acoustic meatus or constructed of any means for pressing a tragus of the external acoustic meatus so as to close the opening of the external acoustic meatus. <IMAGE></p> |
