2019 Volume 103 Issue 10 Pages 421-425
We examined the possibility of further lowering the illuminance in public bath facilities. A questionnaire survey of public bath users was conducted to explore the significance of modern public bath facilities, and users' preferences for brightness were obtained. On the basis of the survey results, a lighting environment with a lower illuminance than before was experimentally constructed and put in place for 21 days in a public bath facility. The results showed that even for an outdoor bath with about 0.5 to 1 lux, users evaluated the brightness as exactly good, and the lighting environment was evaluated to be effective for relaxation and interaction with accompanying persons. We showed the new possibility of designing lighting environments that match the demands of users of public bath facilities.
