The disclosure relates to an apparatus with a housing having a structure for heat dissipation, the apparatus including the housing having at least one surface, outer walls, and a plurality of fins, and an operating unit fixed to the housing, wherein the at least one surface of the housing includes a fin cover connected to the fins, a base exposed in an internal space in which the operating unit is disposed, and a refrigerant filled in a space between the fin cover and the base, wherein the fin cover and the base are connected through the outer walls, and wherein the fin cover has a flat surface.