Abstract: Disclosed is a wind direction control method for an airconditioner which effectively controls a wind direction of discharge air according to a position of the air-conditioner. In the air-conditioner which divides the room into a plurality of zones and has a human body sensor for sensing a human body position in each divided zone, the present invention senses whether a human body is present in each zone by using the plurality of human body sensors, calculates a time ratio every zone according to the human body presence time, compares the time ratio with first and second proportional constants, varies a driving range of a louver according to a compared result, and controls a wind direction of the discharge air.

Abstract: A louver driving device for an air-conditioner is disclosed. The air-conditioner has a main body for intaking and heat-exchanging the indoor air of a room, and for furnishing the heat-exchanged air to the room, and louvers for controlling the airflow in a direction of up and down/right and left. The inventive louver driving device includes a plurality of human body sensors for monitoring the presence of a human body in the room; human body position detecting sections that each receive output signals from the human body sensors, and detect a human body's horizontal location and vertical distance from the air-conditioner; louver driving sections for operating the louvers so as to provide heat-exchanged air towards the human body; and a microcomputer that receives a detecting signal from the human body position detecting sections and produces a control signal to the louver driving sections.