Vehicle air conditioning system

A vehicle air conditioning system includes: an air conditioning unit (100) generating air-conditioned air, which is provided with a ventilation opening (13) and a defroster opening (12); a ventilation duct (14) connected to the air conditioning unit at the ventilation opening, which conducts the air-conditioned air to a ventilation outlet; a defroster duct (16) connected to the air conditioning unit at the defroster opening, which conducts the air-conditioned air to a defroster outlet; and an additional duct (18) branching off from the defroster duct (16), which conducts the air-conditioned air from the defroster duct to an additional outlet.