For air-conditioning within a vehicle interior of a motor vehicle, an air vent is provided with at least one air-directing device located in the region of an air outlet opening. The air vent is configured to allow air flowing out of the air outlet opening to flow, by way of the Coanda effect, in a directed manner along a surface which is adjacent to the air outlet opening. The air-directing device and the adjacent surface are inclined in relation to each other by an angle of inclination which is between 23° and 27°, and the directed air has a volumetric flow of between 30 m3/h and 700 m3/h.