System for distributing air to a row of seats in the passenger compartment of a means of transport or inside the room of a building

A system for the distribution of air to a row of seats (2) in a passenger compartment of a means of transport, such as for example an aeroplane, train or bus, or in the room of a building, comprises a main duct (4) and a series of outlets (5). The outlets (5) are without valves for opening and closing, and the flow of the air through the outlets is controlled by control means (6) associated to each outlet (5) that exploit the Coanda effect.