THE DESIGN AND EVALUATION ABOUT LOW ILLUMINANCE LIGHTING ENVIRONMENT BASED ON THE REQUIRED PERFORMANCES IN THE SHIBUYA MIYASHITA PARK

Abstract

Outdoor lighting design is usually carried out to clear the Recommended Levels of Illumination(JIS Z 9110). In contrast, this research tried to renovate the Miyashita Park located in Shibuya-ku based on the lighting performance design. Since the facilities were converted to barrier-free, strong lighting was no longer required to satisfy walk performance. Performances required for lighting were investigated first, and then a lighting experiment which examines arrangement of lights for ensuring the performances was conducted. As a result of comparing before and after renovation, by distributing the minimum lights which ensure the performance, the whole visibility improved and the consumption energy also decreased.