PROBLEM TO BE SOLVED: To enable solar radiation light to be effectively utilized by using auditorium seats ordinarily installed such as in a stadium without installation of dedicated equipment for utilizing solar radiation light.SOLUTION: A seat 20 includes a movable seat portion 22 that is provided in a solar radiation available area, and a functional member 40 that is provided on the other side of a seating surface 22A of the seat portion 22 and can utilize solar radiation light.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】日射光を利用するための専用設備を設けずに、競技場などにおいて通常設けられる観客席の座席を用いて、日射光を有効利用することができる。【解決手段】座席20は、日射可能領域に設けられた移動可能な座部22と、座部22の着座面22Aと反対側に設けられ日射光を利用可能な機能性部材40と、を有する。【選択図】図4
