Electronic device cooling structure

A cooling structure for an electronic device incorporating a heat generating component, the cooling structure comprising:

• a housing provided with an air inlet and an air outlet;
• a fan for generating, in the housing, a flow of air traveling from the air inlet to the air outlet;
• a circuit board disposed in the housing, the heat generating component being mounted on one surface of the circuit board;
• and
• a heat release member disposed between the one surface of the circuit board and an opposite wall of the housing facing the one surface, the heat release member having fins arranged on the opposite wall and forming a flow passage through which the air flowing in the housing passes, and a heat transfer plate for transferring heat generated in the heat generating component to the fins,
• wherein the heat release member extends, in an arrangement direction of the fins, beyond both sides of the heat generating component, and the cooling structure satisfies one of items (A) to (D) below:
• (A) between the opposite wall and fins, among the fins, that are located in an intermediate zone including a region corresponding to the heat generating component, a resistant layer for suppressing heat transfer from the fins to the opposite wall is formed;
• (B) each of fins, among the fins, that are located in an intermediate zone including a region corresponding to the heat generating component has a through hole penetrating through the fin in a thickness direction of the fin;
• (C) an arrangement pitch of fins, among the fins, that are located in an intermediate zone including a region corresponding to the heat generating component is larger than an arrangement pitch of fins that are located outside the intermediate zone;
• and
• (D) in an intermediate zone including a region corresponding to the heat generating component, the opposite wall has a plurality of through holes for reducing a contact area between the fins and itself.