The electronic computer according to the invention comprises: a storage case comprising a housing including an air inlet and an air outlet for the circulation of a flow of cooling air through the housing, an electronic motherboard comprising a first surface and a second surface, the second surface being provided with connectors for receiving electronic daughterboards, and an air channeling system configured so as to channel the air hitting the first surface of the electronic motherboard to bring it to the side of the second surface of the electronic motherboard. According to one aspect of the invention, the air channeling system is configured to spray the electronic daughterboards, so as to cool said electronic daughterboards through convection of the air.