Cooling device and cooling module

This cooling device is applied to an automobile equipped with a front opening part (2) for opening a front engine room (1) from the front side in a vehicle traveling direction, a first blower (40) disposed inside the front engine room to the front of a drive engine (3) in the vehicle traveling direction, and an introduction flow passage (50a) for introducing, toward the first blower, an air flow flowing in through the front opening part from the front side of the front opening part in the vehicle traveling direction, and the cooling device cools the drive engine with an air flow flowing toward the drive engine after having passed through the first blower from the introduction flow passage. The cooling device is provided with a duct (60) having a first opening part (61) which opens into the introduction flow passage and a second opening part (62) which opens toward the rear of the drive engine in the vehicle traveling direction in the front engine room, thereby forming an air flow passage (60a) for circulating the flow of air between the first and second opening parts.