Wind stop device

The wind break (12) is in two parts which collapse on to each other and a cover (16) connected to the windbreak partly covers an area of the passenger cabin. The cover parts are mounted to swivel against each other about a folding axis and can be brought from an expanded position where the cover extends to its maximum extent into a collapsed position where the two cover parts fold onto each other. IN one function position the windbreak and cover are connected together at least through a connection between one of the windbreak parts and one of the cover parts adjoining same.