When a sliding plate slides forward by the rotating force of a motor, the lower part of a movable member is driven and the movable member set in a vertical state moves forward with the vertical state maintained, and the movable member is then rotated and inclined. When the movable member is to be rotated, consequently, the upper and lower wall surfaces of the movable member do not abut on the internal wall surface of a front concave portion of frame members so that the rotation of the movable member is not hindered. Therefore, it is possible to provide an electronic apparatus having a movable member to be used in an on-vehicle acoustic apparatus and rotating a movable member to be accommodated in a frame member even if a clearance between the concave portion of the frame member and the movable member is reduced.