Generic term used for theatrical work lights with clamps on the end of them often gelled blue and used as task lights back stage
. Some call
them "Equity lights" ( as a certain level
of backstage illumination is required by AEA
for actors' safety
) or "running lights."
has taken the design and refined it to a new level, specifically for live entertainment use.
For discussion, see these threads: http://www.controlbooth.com/forums/n...lip-light.html