| 摘要 |
PURPOSE: An air resistance reducing device actively disperses head-on wind blowing against front surface of a car to the upper part and the side part of a car body to reduce air resistance driving car body takes. CONSTITUTION: An air resistance reducing device comprises a first, a second and a third cylindrical bodies(10, 24, 34), a bracket(42), an impeller shaft(44), an air inflow impeller(46), a first and a second air spouting impellers(48, 50). The second cylindrical body(24) is divided into a front cylindrical part(20) and a rear cylindrical part(22). The L-shaped bracket(42) comprises a foot part(38) and a leg part(40) extended from the lower end of the foot part(38) perpendicularly to the foot part(38) to place and fix the cylindrical bodies(10, 24, 34) with gaps(G1, G2) on the same axis. The air inflow impeller(46) is fixed on the front end of the impeller shaft(44). The first air spouting impeller(48) is placed in a space formed by the inner part of the first cylindrical body(10) and the front cylindrical part(20) of the second cylindrical body(24) and fixed on the impeller shaft(44) to rotate by the rotation of the impeller shaft(44). The second air spouting impeller(50) is placed in a space formed by the rear cylindrical part(22) of the second cylindrical body(24) and the inner part of the third cylindrical body(34) to rotate by the rotation of the impeller shaft(44). Air flowing into the device is spouted through the gaps(G1, G2) to form an air screen to reduce air resistance.
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