Patent ID: 8320127

Claim:
A unit for supporting electronic components which, when in operation, emit heat, said unit comprising: one generally planar carrier plate, which, on a first section thereof, a first group of electronic components is installed and on a second section thereof are placed, first, a plurality of cooling ribs for the removal of heat developed by the said electronic components of the first group, each rib extending along a respective longitudinal axis, and second, a second group of electronic components whereby the cooling ribs at least run along their longitudinal axes with predetermined curvatures in a plane parallel to the said carrier plate; a device for hung mounting which orients the longitudinal axes of the cooling ribs generally parallel with the force of gravity when the unit is mounted thereby; the unit having a top end and a bottom end located with respect to gravity below the top end when the unit is mounted, and the device for hung mounting of the unit is so designed that in the case of rainwater entering the unit the rainwater is urged by gravity towards the bottom end of the unit; the ribs defining air passages between adjacent pairs of ribs, the air passages having opposed upper and lower ends, the upper ends above the lower ends when the unit is mounted and the ribs being configured such that no rainwater can run in a straight line from the upper end to the lower end through any one of the air passages without impacting one of the ribs defining the air passage.