Air-cooling device

An air-cooling device mounted on a vehicle, the air-cooling device comprising:

• a radiator that includes a radiator core and a frame connected to an outer peripheral portion of the radiator core;
• a duct disposed forward of the radiator, the duct including an opening disposed forward of the radiator core and an air guide that extends from the frame to an end of the opening;
• a fan configured to cause air to flow from the opening to the radiator core;
• and
• a shroud,
• wherein
• the frame is between the shroud and the air guide,
• the frame has first and second ends opposite to each other in a vehicle width direction of the vehicle,
• the frame extends from the first end on one side of an imagination straight line to the second end on an opposite side of the imagination straight line, the imagination straight line being parallel to a vehicle front-rear direction of the vehicle and extending rearward from the end of the opening,
• a connecting portion between and connecting the frame and the air guide is located at a distance from the imagination straight line and extends in the vehicle width direction, and
• a rib protrudes from the frame in the vehicle front-rear direction crossing the vehicle width direction.