A cooling device includes: a cooling fan (21); a shroud provided at an outer circumferential side of the cooling fan (21); an inner circumferential wall (52) provided on the shroud and adjacent to the outer circumference of the cooling fan (21); and an outer circumferential wall (53) provided to surround the inner circumferential wall (52). An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan (21) is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall (52). An angle (α) between: an line (L1) connecting the air-flow-direction downstream side end of the inner circumferential wall (52) to the air-flow-direction downstream side end of the outer circumferential wall (53) in cross section along the air flow direction of the inner circumferential wall (52) and the outer circumferential wall (53); and an line (L2) orthogonal to the air flow direction, is 9 degrees or more and 45 degrees or less.