Abstract: A cooling device air-cools a heat-generating portion within an electronic apparatus, the cooling device including a fan that generates a cooling airflow and vibration-generating unit that generates flow-induced vibration in the cooling airflow that is conveyed to the heat-generating portion. The electronic apparatus includes the cooling device and the heat-generating portion that is the object of cooling by the cooling device. A projection-type display device displays an image by projecting the image, the projection-type display device including the cooling device and a liquid crystal unit that forms the images to be projected and that is the heat-generating portion that is the object of cooling by the cooling device.