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the latest LED technology enables the use of LEDs in lighting techniques this
can reduce the energy consumption by fifty percent
especially in tunnels
there are great benefits to be achieved by using LEDs
many tunnels are equipped with high-pressure sodium lights
they are energy-efficient
however they have point like character
this produces a restless effect for the driver because of on even
illumination of the road surface
and added reflection on the dashboard
in order to illustrate his effect a model has been built
another desired function is poor colour rendition this sodium lights
the perception of the driver is hampered led lighting does not have this disadvantage
LED fixtures
are easy to dim
so the intensity of the light in the transition zone can be adjusted
continuously according to the lighting conditions outside
by arranging the leds in a row in a fixture
aligned lighting can be realized
this overcomes the flickering effect caused by the point like illumination of
sodium lights therefore reducing to dazzling effect
by means of special optics the point check light on led can be directed
so the illumination can be accomplished according to the counter beam principal
the counter beam light shines as an angle seventy degrees on the road
in a model you see here a normal lighting
and now a countered lighting
this lighting method increases a contrast between vehicles and the background
such as roads and tunnel walls
the construction of the fixture is a simple aluminum H profile this ensures
excellent cooling of the LED so that a lifetime has extended
the height of his profile is only six centimeters allowing ten centimeters
more clearance in the tunnel
the entire fixture is easy to assemble and easy to clean
also there is no more need for lights to be replaced resulting in ninety percent
savings on maintenance costs also traffic congestion is greatly reduced