Air-blowing device

An air-blowing device comprising:

• a blower fan that is an axial fan located on a downstream side of a heat exchanger in an airflow direction and supplies air to the heat exchanger;
• and
• a shroud that supports the blower fan and forms an air passage extending from the heat exchanger to the blower fan, wherein
• the heat exchanger has a rectangular outline when viewed in the airflow direction,
• at least one side of a periphery of the heat exchanger is arranged to overlap with an outermost peripheral portion of the blower fan that is outermost in a radial direction of the blower fan when viewed in the airflow direction,
• the shroud is integrally formed of:
• a ring part that is formed in an annular shape and covers an outer periphery of the blower fan, the blower fan being disposed rotatably on an inner side of the annular shape;
• a connection part that connects a space on the downstream side of the heat exchanger to the ring part;
• and
• an air-introduction part that connects the ring part and the connection part to each other, the air-introduction part facing the heat exchanger and being formed concentrically to be centered at a rotational axis of the blower fan,
• a part of the air-introduction part, as a protrusion, protrudes outwardly from a periphery of the connection part in the radial direction of the blower fan when viewed in the airflow direction,
• the protrusion includes an outer end surface having an arc shape in a cross section perpendicular to the rotational axis of the blower fan,
• the connection part includes a protruding part extending on and along a virtual circle defined by the outer end surface of the protrusion and protruding toward an upstream side along the airflow direction,
• the protrusion includes a first protrusion and a second protrusion,
• the first protrusion protrudes outwardly from one periphery of the connection part in the radial direction,
• the second protrusion protrudes outwardly from another periphery of the connection part in the radial direction, and
• the protruding part connects the first protrusion with the second protrusion in a circumferential direction without a step.