Patent ID: 8439996

Claim:
An indoor unit of an air conditioner comprising: a casing; an indoor fan contained in the casing; an air filter through which air sucked into the casing by the indoor fan passes; a divider member which includes an inlet port in which the air filter is attached, the divider member being positioned such that the casing is divided into an area upstream of the air filter and an area downstream of the air filter with respect to the direction of an air flow, wherein room air sucked into the casing through the air filter is conditioned, a dust removing section for removing dust trapped on the air filter is provided in an area upstream of the divider member with respect to the direction of air flow, a decorative panel is provided in an area upstream of the dust removing section, and the divider member includes an opening which allows for checking of the inside of the casing, and a lid member for closing the opening, wherein the lid member substantially blocks the room air from entering the casing through the opening during normal operation; and an electrical component box containing electrical components of the indoor unit arranged in the casing directly above and downstream, with respect to the direction of air flow, of the opening in the divider member.