HEADREST DEVICE AND VEHICLE SEAT COMPRISING SUCH A HEADREST DEVICE

A headrest device comprises: a headrest support that is pivotable relative to a backrest frame of a vehicle seat, about a first transverse axis; a headrest frame that is pivotable relative to the headrest support about a second transverse axis; and a tilt compensation device for the headrest frame. The compensation device comprises a connecting element in two parts that are pivotable relative to one another, and first and second pivotable guide pins respectively received in a first guide path in the headrest support and in a second guide path formed by the headrest frame. The second part of the connecting element is guided in translation relative to the headrest support in a direction perpendicular to the first axis.