| 摘要 |
PROBLEM TO BE SOLVED: To provide a blower device capable of surely reducing noise while securing heat exchange performance of a heat exchanger.SOLUTION: An outer shape of a radiator 1 is a rectangular shape when viewed from an air flow direction. At least one side on a periphery of the radiator 1 is arranged overlapping with an outermost peripheral part in a radial direction of an axial fan 3 when viewed from the air flow direction. A shroud 2 is provided at a connection part with a ring part 21 on a surface of a flat surface part 22 facing the radiator 1, and has an air guide part 24 formed concentrically with a rotary shaft of the axial fan 3 being the center. In the air guide part 24, length of the axial fan 3 in a radial direction is constant on the whole periphery, and a part of the air guide part 24 protrudes radially outside of the axial fan 3 from a periphery 220 of the flat surface part 22 when viewed from the air flow direction. At a boundary between the air guide part 24 and the portion other than the air guide part 24 on the flat surface part 22, a protrusion part 26 protruding toward the air flow upstream side is provided. |
