A cooling device for an electric or electronic apparatus includes an inhaling member formed to draw in air and then discharge the air heated by heat generated from a component of the electric or electronic apparatus, an exhausting member communicating with the inhaling member and formed to receive the heated air discharged from the inhaling member, a fan provided adjacent to the exhausting member to forcibly draw in the air from the exhausting member, and a heat exchanger absorbing the heat from the air discharged from the fan and discharging the heat through a body casing of the electric or electronic apparatus. The cooling device for the electric or electronic apparatus has a high cooling efficiency, reduces noise, and prevents an inflow of dust.