With the growing number of projects of the tunnel, the tunnel construction play an increasingly important role in modern transportation. The tunnel is for a closed space, which natural light can not be irradiated, in order to ensure continuity and vehicular driving safety of human life, even during the day inside the whole need of artificial lighting, tunnel lighting is an integral part of the tunnel construction. Then what about wholesale led grow lights?
The tunnel lighting is different from the general lighting of the road, with its distinct specificity, and safety considerations are particularly important in the lighting system. Human adaptation and dark adaptation factor should be taken into account in the design of tunnel lighting program, attach importance to the transition section and transition section of lighting design. The exit of the tunnel due to the adaptation time is very short, usually in less than 1s, so do other processing. I think wholesale led grow lights are the same concept.
The general tunnel visual problems of the following:
(1) before entering the tunnel (daytime): great brightness difference of inside and outside of the tunnel, so to see from the tunnel external lighting is very full of the tunnel entrance will see the “black hole” phenomenon.
(2) After entering the tunnel (daytime): Automotive by bright external to enter even if not very dark tunnel, after a certain period of time to see the inside of the tunnel, known as “adaptive lag” phenomenon.
(3) exit of the tunnel: during the day, the vehicle through a long tunnel near the exit, due to the external brightness high to see through the export, the export appears to be a “white hole”, there will be a strong glare, the driver will not feel; night and day on the contrary, see the exit of the tunnel is not a bright hole, but the black hole, so that the driver not see the external road linear and obstructions.wholesale led grow lights are also the same such as LED high bay.
In the daytime, the lighting brightness of the tunnel exit and entrance lighting levels should be higher than the tunnel lighting luminance values; at night, on the contrary, it should be less than the tunnel lighting brightness value, when the street lighting in the tunnels, The surface brightness values within the tunnel shall not be less than 2 times the outdoor brightness values.