Patent ID: 11930623
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A method of manufacturing a board structure comprising:
providing a heat generating element on a board;
providing a heat sink on the board, the heat sink including a base member that is plate-shaped and having one face in contact with the heat generating element and fins arranged side by side in a fin arrangement direction on another face of the base member, the fins each extending in a flow direction in which cooling air flows, the fins each having a distal end at a downstream end in the flow direction;
providing a first resisting member on a downstream side in the flow direction with respect to the heat sink, the first resisting member acting as a resistor for the cooling air to be exhausted; and
providing a second resisting member on the downstream side in the flow direction and on a first side in the fin arrangement direction with respect to the heat sink, the second resisting member acting as a resistor for the cooling air to be exhausted, wherein
the distal ends of the fins on a second side in the fin arrangement direction are on an upstream side in the flow direction with respect to the distal ends of the fins on the first side, and
the first resisting member and the second resisting member are configured so that more of the cooling air is exhausted toward the second side than the first side after exiting the fins.