Abstract
Through a comprehensive evaluation of the spaces of 25 railway stations, where power-saving operations are being conducted due to an earthquake, the effects of various components of the space on users’ psychology were reviewed. For the platforms of railway stations, which are divided into ‘island platforms’ and ‘side platforms’ the ‘physical quantity measurement’ and ‘impression evaluation’ were assessed. When a simple power-saving method, such as partial lighting up is adopted, it has been shown that there is a negative effect on the users, both physically and psychologically. In particular, in the case of outdoor platforms, there is a concern that glare and anxiety due to contrast may increase; therefore, it is necessary to utilize the reflective surfaces effectively. Floor illuminance is fundamental to lighting design. However, some areas cannot be evaluated by floor illuminance alone. The difference in the results of the impression evaluation in five areas with floor illuminance around 50 lx was widely distributed, and it was found that the shape and material of the space affected the results. If platform screen doors are installed, a lighting method that can evenly illuminate the interior of the space is necessary. By reviewing each factor that determines the visual impression, it was revealed that the lighting location and lighting method were significantly affected.
Highlights
For large public facilities used by many people, energy saving is an important element
The results indicate that the points where the space was evaluated as the brightest are Nos. 17 and 19, the points with the lowest floor illuminance (Figure 17)
A comprehensive evaluation was conducted on 25 railway stations in Tokyo, where compulsory power-saving operations were implemented due to the earthquake
Summary
For large public facilities used by many people, energy saving is an important element. It was necessary to begin forced power saving nationwide, and the Japanese government issued a power use restriction decree to reduce power consumption in public facilities by 15% [11,12] This significantly affected railway stations, which are representative public facilities used by numerous people, and users experienced many inconveniences. It is almost impossible to reduce the operation of indoor air conditioning facilities and mobile facilities at railway stations and maintain the safety and comfort of the users [15,16] For this reason, power savings through lighting energy which consumes the most power, was adopted as a reasonable way to reduce power consumption by 15%. Following the 2012 Japan Regeneration Strategy, next-generation lighting for all public facilities in Japan within 10 years was set as the goal [23]
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