| 摘要 |
PURPOSE: To enlarge the cooling capacity by dividing an air duct into several partial ducts by several guide vanes, making the guide vanes hollow, and connecting the guide vanes to water tanks of both side walls to let cooling water flow at right angles to cooling air into the hollow portions. CONSTITUTION: Air from an air intake 4 cools a radiator 5 to be let flow to a lower exhaust port 7 through an air duct 6. The air duct 6 is partitioned by three aerodynamically structured guide vanes 13 to form four partial ducts 15. The guide vane 13 is shaped hollow, and a cooling rib 16 is provided in the interior, whereby cooling water is passed at right angles to the airflow. The guide vane 13 is connected to two water tanks at both side ends. Accordingly, the guide vane 13 fulfils a radiator function for cooling water as well as an air guide function so as to improve the cooling capacity.
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