HEARING AID

摘要

Provided is a hearing aid which comprises: a main body case (1); a battery case (7) disposed in the main body case (1) in such a way that the battery case (7) may be withdrawn from the inside of the main body case (1) to the outside of the main body case (1); a control device (14) activated by the electromotive force of an air battery (8) accommodated in the battery case (7); a microphone (4) and a speaker (3) electrically connected to the control device (14); and a switching means for cutting power from the air battery (8) to the control device (14) when at least part of the battery case (7) is withdrawn to the outside of the main body case (1). A magnet (11) is disposed at the bottom section of the battery case (7) to block an air hole (10) of the air battery (8). The magnet (11) opens the air hole (10) when at least part of the battery case (7) is withdrawn to the outside of the main body case (1).