The invention relates to the cooling of the item of electronic equipment comprising an electronic compartment formed from a housing and at least one electronic board assembled in the housing. The board is intended to be assembled in a removable manner in the housing by a movement of translation along a groove in order to reach an operating position, the assembly of the board (11) being carried out through an insertion face of the housing. According to the invention, the item of equipment comprises a heat sink of elongate shape disposed along the groove making it possible to collect the heat emitted by the components and means of extraction of the heat collected by the heat sink, the extraction means being located outside of the electronic compartment.