Abstract: In the heating device, PTC heating elements arranged between current rails lying opposite each other are used, which are fed with supply current from a control electronics unit via the current rails. Metallic heating rib structures are respectively coupled to one of the current rails via an electrically insulating but thermally conducting coupling layer. The air to be heated flows through the heating rib structures which have an undulating shape. The metallic heating rib structures are electrically connected to vehicle ground and thus form a shield that eliminates emissions of electromagnetic interfering radiation without impeding the flow of air.

Abstract: Disclosed is a front-end module of a vehicle, including a vehicle front-end element which has at least one fresh air opening, an air channel which connects the fresh air opening with an engine compartment of the vehicle, a heat exchanger of a vehicle air-conditioning system, the heat exchanger being arranged in the air channel and being adapted for air to flow through it and being adapted to be selectively employed as a refrigerant condenser or a refrigerant evaporator, and a fan arranged in the air channel for acting upon the heat exchanger with air, the fan being configured to be reversible and, in a first operating mode, delivering fresh air from the fresh air opening toward the engine compartment and, in a second operating mode, delivering air from the engine compartment Toward the fresh air opening.

Abstract: In the heating device, PTC heating elements arranged between current rails lying opposite each other are used, which are fed with supply current from a control electronics unit via the current rails. Metallic heating rib structures are respectively coupled to one of the current rails via an electrically insulating but thermally conducting coupling layer. The air to be heated flows through the heating rib structures which have an undulating shape. The metallic heating rib structures are electrically connected to vehicle ground and thus form a shield that eliminates emissions of electromagnetic interfering radiation without impeding the flow of air.