DEVICE FOR ATTENUATING ELECTROMAGNETIC INTERFERENCE, AND LIGHTING MODULE OF A MOTOR VEHICLE PROVIDED WITH SUCH A DEVICE

The invention relates to a device for mitigating electromagnetic disturbances emitted by at least one electronic component, arranged on a printed circuit board (33) mounted on a first face (31) of a card support (12) and carrying at least one light-emitting diode controlled by the at least one electronic component for the emission of light rays. [0002] A confinement cage is arranged around at least said electronic component, it is formed partially by walls integral with said first face and on which the printed circuit board rests, so as to delimit a wave confinement zone. [0003] The confinement zone presents an opening (74), according to a first direction, capable of being closed or not by a closing piece (34, 80) distinct from said walls. [0004] The invention further relates to a light module equipped with such a device, and a motor vehicle comprising a light module according to the invention.