Abstract: The invention relates to a seat construction comprising a seat cushion part and a backrest part, and: a presence sensor for detecting at least the presence of a person or an object placed in the said seat construction, means for ventilating the seat construction comprising at least one duct through the said presence sensor and at least one air passage through the rest of the seat construction, and a device for feeding an air current through the said air passage and through the said duct for ventilation of a predetermined region adjacent to the seat construction. According to the invention, the seat construction comprises a layer of an air-distributing material disposed between the said presence sensor and the said air-current-feeding device, whereby a flow path is provided for the said air current through the air passage, the duct, the said layer of air-distributing material and the said air-current-feeding device.

Abstract: The invention relates to an arrangement for ventilation of a vehicle seat, which arrangement comprises an air-distributing material and an electric heating element comprising at least one electrically conductive component arranged in a pattern in conjunction with at least one support, where the vehicle seat comprises a bottom part which is adapted for ventilation by blowing air in or sucking air out via at least one passage through the bottom part and on through the said air-distributing material. According to the invention, the said support, heating element and air-distributing material are manufactured as an integrated arrangement adapted for mounting in conjunction with the said vehicle seat, the said air-distributing material being designed as at least one unit which is dimensioned for mounting in a correspondingly designed cutout in the vehicle seat. By means of the invention, an improved arrangement for heating and ventilation of a seat in a vehicle is obtained.