Abstract: The air diffuser device contains front horizontal deflecting fins ?(L1 to L5)! and rear vertical deflecting fins ?(L6 to L10)! capable of swinging relative to a nozzle housing ?(GH)!, said deflecting fins in each case being connected to each other via a coupling rod ?(K1; K2)!. The front and rear deflecting fins are adjustable by an operating/adjusting element ?(B)! guided along a front deflecting fin ?(L3)!. For the mutually independent adjustability of the front deflecting fins, on the one hand, and the rear deflecting fins on the other hand, the operating/adjusting element ?(B)! is connected on the back side via a ball joint ?(B3; V1)! with a connecting/adjusting element ?(V)!, which in turn is articulated on the rear deflecting fins with lengthwise displaceability perpendicular to the axis of swivel of said deflecting fins.

Abstract: In order to be able to obtain in spite of individual adjustment possibilities for defined directions of air flow a uniform front design on the interior side that is not disturbed by different positions of deflecting fins or adjusting elements, deflecting fins (L1 to L6) behind a flow direction-neutral front baffle (F) can be driven into a corresponding dwelling position by a brief adjusting pivot motion with subsequent resetting of the front baffle (F).

Abstract: A heater or air conditioning unit is able to efficiently deliver air at a low noise level. The unit is manufactured in accordance with the "component sharing principle," whereby it is provided with an installation space capable of accepting an evaporator for air conditioning, or air-guide devices. The air-guide devices route the incoming air flow without inducing turbulence.