Patent ID: 7670414

Claim:
An indoor unit of an air conditioner, the indoor unit comprising: a cabinet forming an exterior of the indoor unit, the cabinet having an air inlet in an outside surface thereof; a fan mounted in the cabinet; an indoor heat exchanger mounted in the cabinet; and a filter unit detachably mounted on the outside surface of the cabinet over the air inlet such that air in drawn in through the filter unit and flows into the cabinet through the air inlet, wherein the filter unit comprises: a filter for purifying air; a filter case accommodating the filter therein and having a filter gate at a side thereof for placing/withdrawing the filter thereto/therefrom, the filter being detachably mounted on the outside surface of the cabinet; and a cover mounted to the filter case for opening/closing the filter gate, the cover being exposed to form an exterior of the indoor units, wherein the filter case is exposed to outside of the cabinet forming an exterior of the cabinet.