Air vent apparatus for vehicle

An air vent apparatus for a vehicle, which is disposed to supply air including cold air or warm air into an interior of a vehicle, the air vent apparatus comprising:

• a duct housing opened at front and rear sides thereof;
• at least one blade disposed at a rear side in the duct housing horizontally in a width direction of the duct housing, and having both ends rotatably coupled;
• a knob mounted on one blade among the at least one blade so as to be slidable in the width direction of the vehicle and a front and rear direction of the duct housing, and capable of adjusting an angle of the blade;
• and
• a diffuser device mounted in the duct housing at a position spaced apart from a front side of the blade, connected with the knob, adjusting an angle in a left and right direction, and selectively diffusing the supplied air in accordance with a manipulation of the knob,
• wherein the diffuser device includes:
• a rotary link having upper and lower portions that are rotatably mounted in the duct housing at a front side of the knob, and connected with the knob;
• a connecting rod formed integrally with the rotary link at a front side of the rotary link, and having both end portions formed to be bent toward the front side of the duct housing;
• and
• fan blade assemblies having upper and lower portions that are rotatably mounted in the duct housing at a front side of the connecting rod, and are connected with the connecting rod.