liv-lit Japanese Japanese
リブリットとは リブリットとは コンセプト コンセプト 風を通すビル 風を通すビル 光のまちづくり 光のまちづくり
What is liv-lit?
Liv-lit (Lighting as Live Reflector) is an interactive lighting system at the top of the Kansai Electric Power Company Building in Nakanoshima, Osaka, completed in December 2004.

The "Live Reflector" is a new concept in urban lighting that informs us about the surrounding environment in real time. The lights come on as the sun goes down, reflecting the actual movements of the wind.

Rows of white lights emerge left and right from the point at which the wind strikes, and move along the face of the wall at the same speed as that wind. At times, a faster wind blowing from behind overtakes the row of lights moving forward.

Nakanoshima has two prevailing winds: a sea breeze from the west, and a land breeze from the north-northeast. Liv-lit depicts the very noticeable interchange of these winds between day and night.

Liv-lit is light that reflects the natural movement of the skies over Osaka.

In December 2005 we added an interactive feature that reflects the movements of people: Touch the Light.
Touch the Light  Report Touch the Light Report
The concept The concept
Sample data
Normal winds

Normal winds
Strong winds

Strong winds
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The development
In 1999 Kansai Electric Power Company and Nikken Sekkei set up an exploratory team for the project that also included Shinya Izumi, Kaoru Mende, Kazuko Fujie and Eiichi Asai. The result was a decision to proceed with illuminating the top of the building, with Yoshiaki Nishimura becoming involved and commencing work on the project in 2000.
Year by year progress Year by year progress
Produced by Kansai Electric Power Company, Nikken Sekkei, Lighting Planners Associates, and Living World
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