Abstract:
With the acceleration of urban and rural construction and the development of the night economy, the importance of urban lighting construction is becoming more and more prominent. On the basis of meeting functional needs, it is still necessary to carry out reasonable lighting planning, and choose suitable lighting methods and parameters. White LED with high light efficiency, which has been widely used in urban road lighting, is gradually replacing the traditional high-pressure sodium lamp of low color temperature, but there are also visual and rhythm problems such as uncomfortable glare and short-wave ratio increases. In Beijing, for example, the randomly measured street light color range is wide (1600~5400K), for each color temperature range, statistically significant light color preference of pedestrians is not yet known, so that research from multiple perspectives is urgently needed. In this paper, a cross-sensory channel study was conducted from the visual perception and psychological preference of pedestrians to explore the visual-psychological effects of street light color, ground illuminance, and ambient temperature, and to provide data support from the human factors' perspective of pedestrians in addition to the core perspective of driving safety. In this study, 18 urban street lighting materials with 6 color temperatures and 3 illuminance combinations were selected, and evaluation experiments were conducted at 3 ambient temperatures through videos of pedestrian perspectives. The results show that different lighting color temperatures bring different visual psychological perceptions, and there is an interactive effect of color temperature, illuminance and temperature on pedestrians' psychological preferences; the higher the ambient temperature, the better the participants' evaluations of medium and high color temperatures.