LED facades named ‘Kachi Doki Clock’ is commissioned to integrate into
glass curtain walls of the new building in front of Kachidoki station in
Tokyo. These facades look ordinary glasses during the day, however they are
illuminated after dark. One of the two walls is approximately 15.7m high and
9.1m wide, and the other is 9.5m high and 9.1m wide.

Graphical images are displayed on the LED facades using digital control
system, and move like an analog clock. The images change in random
displaying time, season and weather information taken from internet access.
Therefore, this permanent installation is there for our everyday lives.

The title of the work ‘Kachi Doki Clock’ comes from the site name, and at
the same time, it is a pan as ‘Kachi’ is an imitative word of analog
clocks and ‘Doki’ is a mimetic word for thumping.