An electronic device includes: a casing in which electronic components including a heat-emitting component which emits heat during operation are accommodated; a heat-dissipating component including a plurality of fins to which heat emitted in the heat-emitting component transfers; a fan operable to supply cooling air to the heat-dissipating component; and a cleaning component movable on an end surface of the fins along the side nearer the fan with the cleaning component abutting against the end surface of the fins. In these features, dust on the end surface of the fins can be automatically removed by moving the cleaning component in the case of the spatial orientation of the electronic device being changed. Therefore, an effect of removing heat emitted in the heat-emitting components, by using cooling air supplied from the fan, can be continuously obtained.