external illumination definition
external illumination means illumination of a sign that is affected by an artificial source of light not contained within the sign itself.
external illumination means illumination of the sign that is external to or outside of the sign or sign box; (éclairage externe)
external illumination means spot lights or any other form of light directed at the advertisement, advertising sign or advertising structure.
More Definitions of external illumination
external illumination means a light source directed towards a sign;
external illumination means the lighting of an object from a light source located a distance from the object.