Device for delivering air at the front of the cabin of a vehicle

A device for delivering ventilation air to the front of the cabin of a motor vehicle, this ventilation air being delivered by a delivery box of a heating, ventilation and/or air-conditioning unit, said device comprising at least one ventilation pipe supplying at least one air vent provided in the dashboard and connected to an outlet of said delivery box, the cross section of which is adjusted by a delivery shutter, wherein:

• said ventilation pipe is formed in a delivery module which runs transversely under the upper face of the dashboard,
• said ventilation pipe splits downstream in the direction of flow of the ventilation air into at least one “gentle” ventilation pipe which opens onto the upper face of the dashboard via ventilation orifices of large cross section and into at least one “forced” ventilation pipe which supplies at least one air vent of small cross section arranged on the dashboard facing the cabin, and
• at least one air distribution shutter is provided at the junction between the three pipes, said distribution shutter being controlled independently of the delivery shutter.