AIR DIFFUSER ASSEMBLY FOR A VEHICLE

An air diffuser group (6) for a vehicle, having a hollow body (7) having an air inlet opening (10) and an air outlet opening (13), a throttle valve (24) associated with the air inlet opening (10) and having a blade (25) movable between an open position and a closed position of the air inlet opening (10), and a fixed external air distribution grid (14) being provided with first fixed flow diverter fins (16) to direct an air flow incident in a first direction (18) and second fixed flow diverter fins (19) to direct an air flow incident in a second direction different from the first direction (18), wherein third flow diverter fins (30, 31) movable with the blade (25) are provided to direct at least part of the incoming air flow towards the second fixed flow diverter fins (19) when the throttle valve (24) is arranged in the open position and/or towards the first fixed flow diverter fins (16) when the throttle valve (24) is arranged in an intermediate position between its open and closed positions.