青色照明光の心理的効果 : 防犯灯・自殺防止灯の現状(<特集>青色照明光の心理・生理的効果とその評価)

概要

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Blue light has been widely used for lighting for the prevention of crime and suicide in recent years, since it was believed to have a sedative effect. In this report, we review the circumstances of blue light and illumination as lighting for the prevention of crime and suicide and their current situation. Although the number of crimes tends to decrease in the areas with lighting for crime prevention, it would not be the direct effect of blue light itself, but the combined effect of various activities for preventing crimes such as a patrol at night. In the case of lighting for suicide prevention, many railroad companies in the Tokyo metropolitan area have adopted blue light to their stations and railroad crossings. In the present situation, however, its effect is not clear since there are not enough data for objective evaluation. Comprehensive and long-term data would be needed to evaluate the effects of blue light.
2013-09-01