Tunnel lighting can be divided into four types: entrance lighting, basic lighting, exit lighting and emergency lighting.
Tunnel lighting design steps: determine the type of tunnel → determine the brightness and uniformity of the tunnel → determine the type of road tunnel, determine the vertical illuminance, higher than the standard → select the appropriate light source and lamps → determine the lighting method, spacing lamps, etc. → calculate the lighting effect to improve the lighting scheme .
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In addition to meeting the requirements of general road lighting, tunnel lighting sources are especially lighting sources with good light transmittance in the smog formed by automobile exhaust. Therefore, in general, high-pressure sodium lamps are mainly used; if it is a short tunnel or an urban tunnel with a small proportion of diesel vehicles, the smoke is relatively small, and fluorescent lamps or metal halide lamps with good color rendering performance can be considered. High-pressure sodium lamps or metal halide lamps with large luminous flux are used at the entrance and exit of the tunnel. With the development of LED technology and obvious energy-saving effect, LED tunnel lights will be the best choice for future tunnel lighting.
In order to solve the black hole effect and flickering effect of the tunnel, in addition to reasonable lighting design, it is more important to choose reasonable tunnel lighting to ensure the safe passage of vehicles in the tunnel.
The selection characteristics of tunnel luminaires should include:
The lamp body is made of special aluminum alloy material, with anodized surface treatment, high strength and corrosion resistance;
Reasonable light distribution and high luminous efficiency;
Good sealing performance; it can be installed by hanging, ceiling, direct fixing, etc.
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