A first cooling device is disposed in an engine room at the upstream side in the air flow direction with respect to an engine. A second cooling device is disposed at the upstream side in the air flow direction with respect to the first cooling device. A third cooling device is disposed at the upstream side in the air flow direction with respect to the second cooling device. An air pipe connects the engine and the third cooling device. The air pipe passing above the first cooling device and the second cooling device. A blocking member closes off periphery of a space between the first cooling device and the second cooling device. The blocking member includes an opening. A cover member is configured to selectively open and close the opening.