A protective element for a radiation emitting or receiving sensor installed on a vehicle, for example a radar or a camera installed at a front or rear vehicle body part, comprising a support configured to be fixed to said vehicle body part in front of the emitting or receiving sensor; wherein, in combination: i)- the support is made entirely of a transparent synthetic plastic material or however of a material pervious to optical radiation or to radio frequency ii)- the protective element also comprises a transparent film delimited by a first face and by a second face, opposite to the first face, the transparent film being fixed entirely integral to a first face of the support facing, in use, the emitting or receiving sensor; iii)- the first face of the transparent film facing towards the support and being arranged to adhere in contact with the first face of the support; iv)- the second face of the transparent film being lined at least partially by a decorating layer applied in a permanent manner thereon; and v)- at least a first portion of the first face of the transparent film, configured to be arranged, in use, facing the emitting or receiving sensor, is provided with an electric resistance that is entirely integrally formed thereon; characterised in that vi)- the second face of the transparent film is provided, at the first portion of the first face of the transparent film, with at least an electric connection element electrically and mechanically connected to said electric resistance, preferably by means of at least one shunt that passes through said transparent film; vii)- said at least one electric connection element is integrally fixed against the second face of the transparent film with the interposition of said decorating layer. i)- the support is made entirely of a transparent synthetic plastic material or however of a material pervious to optical radiation or to radio frequency ii)- the protective element also comprises a transparent film delimited by a first face and by a second face, opposite to the first face, the transparent film being fixed entirely integral to a first face of the support facing, in use, the emitting or receiving sensor; iii)- the first face of the transparent film facing towards the support and being arranged to adhere in contact with the first face of the support; iv)- the second face of the transparent film being lined at least partially by a decorating layer applied in a permanent manner thereon; and v)- at least a first portion of the first face of the transparent film, configured to be arranged, in use, facing the emitting or receiving sensor, is provided with an electric resistance that is entirely integrally formed thereon; characterised in that vi)- the second face of the transparent film is provided, at the first portion of the first face of the transparent film, with at least an electric connection element electrically and mechanically connected to said electric resistance, preferably by means of at least one shunt that passes through said transparent film; vii)- said at least one electric connection element is integrally fixed against the second face of the transparent film with the interposition of said decorating layer.