An air discharge assembly unit, especially for routing air (L) into the interior space (70) of a vehicle, includes an air routing duct (28) for routing primary air (H) from a primary air inlet area (18) to an air outlet area (40). A flow cross-sectional area of the air routing duct (28) decreases, at least in some areas away from the primary air inlet area (18), in the direction of the air outlet area (40) up to a duct area (30) with minimal flow cross-sectional area. A secondary air inlet area (41) is provided for the inlet of secondary air (N) into the air routing duct (28), in the area of the duct area (30), with minimal flow cross-sectional area.