視方向に対する標識の水平角が煙中の視認距離に与える影響: 誘導灯及び案内標識の視認性

摘要

本研究は、煙の濃度•標識の種類•標識の視方向に対する水平角が視認距離に与える影響を基に標識の配置指標を作成することを目的とし、被験者実験を行うことで誘導灯及び案内標識模型について視認距離に対する減光係数と水平角の影響を把握した。結果として、各標識について減光係数と水平角を用いた視認距離の予測式を得た。%Two experiments on the visibility of a direction sign and three emergency signs through fire smoke were carried out with subjects. In Japanese railway stations, direction signs, which are prescribed by rules of each railway company, and Emergency signs, which are prescribed by Fire Services Act, are installed. The emergency signs used in the experiments are an evacuation exit sign and two evacuation route signs. Smoke density, type of signs and yaw angles of the sign were changed in the experiments. Twenty subjects aged twenties were participated in the experiments. All subjects have normal sight. The experiments are planned with " Design of Experiment". As a result of statistical analysis with regression analysis, relational expressions of each sign about the visible distance, smoke density and yaw angles were derived.