街路に隣接する空地の見通しを高めた屋外照明の提案: 岐阜県白川村の平瀬地区を対象として

摘要

This research proposes a lighting environment to improve the visibility of open spaces in the streets of the Hirase District, Shirakawa Village, Gifu Pref. First, the areas around the streets were investigated, and it was shown that void spaces were hardly recognized at nighttime. Next, an experimental lighting environment was constructed based on setting up lights on the edges of each void space adjacent to the street within a range of 250m. The results showed that the amount of luminous flux and the illuminance of the experimental situation was lower than the present lighting environment. It was also found that the visibility around the streets increased, and the evaluation of the danger of walking on the street decreased. The lighting of void spaces worked more effectively for tourists who did not have background knowledge about the place.%本研究では、岐阜県大野郡白川村の平瀬地区を対象として、街 路とその周辺の空地（ボイド）に対する見通しを高める光環境のあ り方を提案した。はじめに、街路周辺の見通しなどについての調 査を行ない、夜間にはボイドがほとんど認識されていないことを示 した。次に、街路に隣接するボイドの境界部分に光源を設置する ことを基本として、約250mの範囲の夜間光環境を実験的に構築し た。