Patent ID: 8715047

Claim:
A ceiling-mounted air conditioner comprising: a main body which is fixed onto a ceiling of a room where the ceiling-mounted air conditioner is installed; an intake panel which is disposed at the bottom of the main body and has an air intake; a door panel which is disposed at the bottom of the intake panel and shuts or opens the air intake by being lifted up or down; a plurality of moving elements which are installed onto the top surface of the door panel, and are lifted up or down so as to be able to lift up or down the door panel; and a plurality of rotation elements comprising pinions which are disposed at the intake panel and thus lift up or down the moving elements, wherein each of the moving elements includes a vertical portion having a cavity portion extending vertically therein and protruding from the top surface of the door panel, wherein the vertical portion includes a driving force transmitting portion disposed on one side of the cavity portion and contacting a corresponding rotation element, and an elevation guide portion disposed on the other side of the cavity portion, corresponding to the driving force transmitting portion, formed by forming a vertical cutout on the other side of the cavity portion so that part of the corresponding rotation element can be inserted into the vertical cutout and guide the elevation of the vertical portion.