by a protective cover 14 which at least partially encloses the protective chamber 32 the protective cover 14 is arranged on the side of the housing outer wall 12 facing the internal space 34 the protective cover 14 is preferably firmly connected to the housing outer wall 12 by a cohesive material joint the housing outer wall 12 likewise preferably encloses at least a part of the protective chamber 32 the protective chamber 32 is thus divided off from the surroundings 36 by the housing outer wall 12 in the first design variant according to fig1 and 2 there is scope for providing the protective chamber 32 at an edge of the housing 40 according to the disclosure the protective chamber 32 and the internal space 34 preferably have a gas conducting connection to one another by way of a pressure equalizing element 24 in particular a pressure equalizing element 24 which comprises a watertight and breathable diaphragm in the first design variant the pressure equalizing element 24 is arranged in the protective cover 14 pressure equalizing elements are known they serve for ventilating and venting sealed housings 40 in order to avoid pressure differentials between the internal space 34 enclosed by the housing 40.