| 摘要 |
PROBLEM TO BE SOLVED: To increase the forced air-cooling heat dissipation efficiency of a forced air-cooling heat dissipation structure. SOLUTION: The forced air-cooling heat dissipation structure comprises a duct member 101 having heat dissipation fins inside, an exhaust fan 22 which sucks and exhausts the air and causes the air to flow along the inside of the duct member, and close-up members 150 and 151. The heat dissipation fins 106 and 107 form a plurality of air flow channels 110. The air flow channels are so formed that those disposed near a wall 102 have a larger cross-sectional area than those disposed away from the wall 102. The flow rate of the air in the air flow channels near the wall 102 is larger than that in those disposed away from the wall 102. Consequently, the heat is efficiently drawn from parts of the heat dissipation fins 106 and 107 which have high temperatures. The close-up members 150 and 151 close up the parts where no heat dissipation fins exist to guide the air flow to the heat dissipation fins 106 and 107. |
