An air deflector device for a convertible vehicle has a deflector mounted to pivot between a shutting position, in which it participates in making up the roof when the roof is in its closed configuration, and an opening position that it takes up in order to protect the passengers inside the vehicle from the flow of air when the roof is in its retracted configuration. A longitudinally movable plunger with a sealing geometry is loaded with a spring force and held in an initial position by a compression spring. host disease, autoimmune disorders, diseases of inflammation, vascular disease and fibrotic diseases, the stimulation of neuronal regeneration or the treatment of fungal infections.