Abstract: A heat dissipation structure, comprising includes a plate-shaped heat generation body; cooling members disposed at one side and the other side in a thickness direction of the heat generation body respectively and configured to hold the heat generation body in the thickness direction; a regulation portion provided between the cooling members holding the heat generation body and configured to regulate a distance from one of the cooling members to the other one of cooling members in the thickness direction; and a pipe connected to the cooling members. A refrigerant passage penetrating in a width direction that is orthogonal to the thickness direction is provided in the cooling members, and the pipe is provided to be able to communicate with the refrigerant passage, and the pipe is attachable to and detachable from, in the width direction, the cooling members in a state of holding the heat generation body.

Abstract: The constitution comprises a grille for sucking air, a heat exchanger for exchanging heat with the air, a blower for feeding the air exchanged of heat by the heat exchanger, and an air diffuser for blowing out the wind generated by the blower. The air diffuser has such a shape that the direction of the wind blown out from both ends in a horizontal direction may be the lower direction than the direction of the wind blown out from the center in the horizontal direction. The air diffuser has such a shape that the outer circumference of the section in the horizontal direction has a nearly arc shape. It can be installed at a corner of mutually adjacent walls of a room or on a wall. In this constitution, the heat exchanged wind reaches uniformly all parts of the room, and the comfort is notably enhanced. At the same time, generation of unusual sound is suppressed.