| 摘要 |
The hearing aid of the present invention comprises a main body case (1), a battery case (7), a control device (14), a microphone (4), a speaker (3), switching part (12, 16), and a lid portion (11a). The battery case (7) is provided so that it can be pulled from inside the main body case (1) to the outside of the main body case (1). The control device (14) is actuated by the electromotive force of the air battery (8) held in the battery case (7). The microphone (4) and the speaker (3) are electrically connected to the control device (14). The switching part (12, 16) cuts off the supply of power from the air battery (8) to the control device (14) when the at least part of the battery case (7) is pulled out of the main body case (1). The lid portion (11a) is provided either inside the main body case (1) or inside the battery case (7), and air holes (10) in the air battery (8) are opened and closed in conjunction with the operation of pulling at least part of the battery case (7) out of the main body case (1).
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