Use of illumination device for flow channel beneath dam or high water barrier with light from external projector supplied to interior of flow channel via light conductor(s)

摘要

The illumination device uses at least one projector (9) with an electric light source (10), positioned on the outside of the flow channel (5), the light supplied to at least one light conductor (12) having a light output window (13) positioned within the flow channel, for illuminating the interior of the latter. The light conductor and the light output window is sealed against the ingress of moisture.