An output device which houses a portable device in an internal space and which outputs at least audio or images outputted from the housed portable device to the outside, includes: a case body including a housing portion housing the portable device; a lid body connected to the case body so as to pivot about a hinge portion and pivoted between an opened position in which the housing portion of the case body is opened and a closed position in which the housing portion of the case body is closed; and a pair of buckles pivotally supported at one outer peripheral portion of the case body or the lid body between a locked position and a lock release position as well as pivoted to the locked position when the lid body is pivoted to the closed position to thereby lock the lid body with respect to the case body.