In an electronic appliance, a base is thermally fused by a heat generating component. On the base, a heat dissipating fin group including heat dissipating fins each extending in a Y direction is arranged in spaced relation in an X direction. An exhaust fan and a partition between which the heat dissipating fin group is sandwiched in the Y direction are arranged so as to be faced with each other. The edge portion group of the heat dissipating fin group on the side of the partition is farthest from the wall surface at least one outermost position in the X direction and closest from the wall surface at a specific position different from the one outermost position, and is farther from the wall surface between the specific position and the one outermost position as the one outermost position is approached.