The battery 24 is connected to the speaker 22, the microphone 23, and the control board 25 by connection lines 26, 26, . . . , and the control board 25 is connected to the speaker 22 and the microphone 23 via the battery 24 and the connection lines 26, 26. Therefore, power is supplied from the battery 24 to the speaker 22, the microphone 23, and the control board 25 via the connection lines 26, 26, . . . .

The connection lines 26, 26 connecting the battery 24 to the speaker 22 and the microphone 23 are partially inserted through the fulcrum shaft 21.

Accordingly, the speaker 22 and the microphone 23 are connected to the control board 25 by the connection lines 26 and 26 that are partially inserted through the fulcrum shaft 21. Therefore, the need for a dedicated component for inserting the connection lines 26, 26 into a region between the inside of the base body 2 and the inside of the rotating body 3 is eliminated, and the manufacturing cost can be reduced through reduction in the number of components of the audio output apparatus 1.

Furthermore, since the connection lines 26, 26 are protected by the fulcrum shaft 21, the connection lines 26, 26 can be prevented from being disconnected.

<Fitting Audio Output Apparatus in Ear>

Operations for fitting the audio output apparatus 1 in the ear 100 will now be described below (see FIGS. 15 to 20). Note that the following describes, as an example, operations for fitting the apparatus in the left ear 100.