| 20110261564 | LIGHTING DEVICE PROVIDED WITH LEDS FOR A TUNNEL - A lighting device for lighting a tunnel tube with a traffic direction, comprising a number of approximately point-like light sources, which are fixed against a tunnel tube wall, distributed along a line extending in the longitudinal direction of the tunnel and each adapted to generate a light beam, the main direction of which comprises at least one component extending in the traffic direction of the tunnel, wherein the distance between the light sources in the longitudinal direction of the tunnel is less than 5 m. The contrast for drivers of vehicles traveling in the tunnel is hereby increased relative to the contrast of usual lighting devices for the interior of the tunnel The distance between the light sources is preferably less than 0.2 m and the light sources are each provided with a LED. | 10-27-2011 |
