Abstract: To improve a local cooling effect even when the rearrangement of devices is very difficult. A cooling device 1 includes a heat sink 11 disposed on a heat-generating element 2 disposed inside a housing, a heat-radiating plate 12 that thermally connects the heat sink 11 with the housing, a special-purpose duct 13 that guides cooling air directly to the heat-generating element 2, and a special-purpose fan 14 that sends out the cooling air into the special-purpose duct 13. The heat-radiating plate 12 is a leaf-spring-like component, and is in contact with the upper surface section of the heat sink 11 and the internal surface section of the housing with predetermined elasticity.