Wind direction controlling device of slim-type air vent for automobile

A wind direction controlling device of a slim-type air vent for an automobile, the wind direction controlling device comprising:

• a slim-type air duct (100) having an air inlet (110) and an air outlet (120) through which air passes, wherein air generated in by air conditioning device flows in through the air inlet (110) and then is discharged to the outside through the air outlet (120), an air distributor (200) rotatably installed inside the slim-type air duct (100), and an air guide (300) installed and fixed inside the slim-type air duct (100) so that the air distributed by the air distributor is discharged through the air outlet (120) as the Coanda effect is generated in the upward-forward and downward-forward directions,
• wherein the air guide (300) has a curved contact surface (310) on one side, curvature of the contact surface (310) is the same as curvature of a body (210) of the air distributor (200) and an airfoil (320) protruding curvedly on the other side,
• air passages (230) in the body (210) of the air distributor (200) open and close depending on the position of the air passages (230) in contact with the contact surface (310) of the air guide (300) so that air may be supplied to only one of upper and lower parts of the slim-type air duct (100) or to both the upper and lower parts of the slim-type air duct (100) at the same time.