Structure, in particular a transpirating dashboard, for diffusion of air in a passenger space of a motor vehicle

A structure (1), in particular a transpirating dashboard, for diffusion of air in a passenger space (2) of a motor vehicle (3), has a support portion (10), which is connected to an attachment portion of the motor vehicle (3), and delimits at least partially a receptacle (20, 41); the structure (1) also has a door (23, 43), which is mobile in relation to the support portion (10), in order to open and close the receptacle (20, 41); the door (23, 43) is provided with an outer panel (28, 48) which is permeable to air, and has a hollow space (30, 50), which (30, 50) communicates with an air distribution system (7), in order to diffuse the air itself in the passenger space (2), through the outer panel (28, 48), at least when the receptacle (20, 41) is closed.