Abstract: A protective helmet (200) adapted for the external display of controllably selectable images, comprising: an outer portion (202); and a display module (212) comprising a flexible electronic display screen (214); wherein the outer portion comprises a recess (206) configured to receive the display module; and wherein the display module is positioned within the recess such that an outer surface (213) of the display module continues a profile of the outer portion.

Abstract: A bodywork panel (13,28) for a vehicle such as a racing car (1,2) or a racing motor cycle (27) is fitted with one or more optically clear panels (16), which are profiled to follow the aerodynamic form of the bodywork panel (13,28). A flexible reflective display screen (17), for examples based on e-paper, is mounted to an inner face of each optically clear panel (16) such that an image on the display screen (17) is visible outside the vehicle through the optically clear panel (16). A paint finish on the bodywork panel (13,28) continues over a peripheral region of each optically clear panel (16), concealing a join between it and the bodywork panel (13,28). Images displayed on the display screens (17) via a display controller (25) can thus appear like painted graphics on the bodywork panel (13,28), except that they may be changed as desired. Thus, graphics on the vehicle, such as advertising and sponsorship logos, can be changed at will during a race.