The confronting area of flexible printed circuit is interposed between the leading face and the passage unit. A protruding length of the protrusion region from the spaced face is equal or larger than that of the fixed region. A recess is formed on the support face of the passage unit at a position confronting the leading face. Both ends of the leading face are interposed between both ends of the opening of the recess with respect to a draw-out direction. The confronting area of the flexible printed circuit passes through the recess.