| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an earphone capable of listening both external sound and sound from the earphone, and adjusting the sound which allows a user to easily listen in accordance with applications.SOLUTION: An earphone 1 includes: a cylindrical insertion part 2 of which one end is inserted into an external auditory meatus and both ends are opened; a transmission member 4 to which an electroacoustic conversion element 3 generating an acoustic oscillation corresponding to an electric signal to be inputted is built in, which is arranged on one part of a side surface of the insertion part 2, and a part of which contacts with an antilobium in a state where the insertion part 2 is inserted into the external auditory meatus; and a plug 5 of which one end is arranged in the insertion part 2, and which plugs an opening portion on the other end side of the insertion part 2 and is movable between one end of the insertion part 2 and the other end of the insertion part 2.</p> |
