| Keywords |
Light trespass; Advertisement signs; Sheet; Illuminance |
| Abstract |
Light trespass significantly influences both advertisement and space lighting. Eleven types of advertisement lighting were investigated in this study by applying different light source output modifications to four types of advertisement lighting to reduce light trespass. The influence range of light trespass was checked and the effect of reducing light trespass using eight types of sheet applications to one type of channel letter-type was analyzed. As a result of measuring vertical illuminance and the range of light trespass influence, it was found that advertisement lighting types that satisfied the reference value of lingt trespass of 10 lx in residential areas within 10 m were 30 w and 79 w channel letter-types, 150 w internal LEDs, 800 W external halogen lights, and black background HALO lights. As a result of measuring the reduction in light trespass by attaching eight sheet types to the surface of advertisement lighting, light trespass reduction was found to be greater than 49% with seven sheet types and the maximum luminance reduction was greater than 47%. |