study of appropriate illumination on outdoor advertising signboard

Abstract

In this study, we were interested in investigating appropriate illumination on outdoor advertising signboard as it is useful for the illumination design in the future outside signboard. The results show that the adjusted light-up time form daytime to night was when the luminous intensity of the outdoor advertising signboard was approximately 2501x. At that time, the difference of sky brightness and signboard brightness was often measured under 200cd/ _m2_.