Light reduction device and method out of snow region tunnel hole

Abstract

The invention relates to a light reduction device and method out of a snow region tunnel hole, and belongs to the technical field of light reduction out of a snow region tunnel hole. The light reduction device is composed of a plurality of light reduction plate sequences, each light reduction plate sequence comprises a plurality of light reduction units, each light reduction unit comprises a lightreduction plate, a framework and a bracket, the front face of each light reduction plate is made from a light-absorbing coating layer, each framework is in a flat cuboid shape, each light reduction plate is arranged at the front face of the corresponding framework, and each bracket is arranged at the back face of the corresponding framework, each bracket is used for supporting the corresponding light reduction unit, an electric heating module is further arranged in each framework, and each electric heating module is used for heating the corresponding light reduction unit. The light reductiondevice and method out of the snow region tunnel hole effectively reduce the brightness outside the hole, reduces the difference between the inside brightness and outside brightness of the hole, and isbeneficial to improve the driving safety and comfort; solar photovoltaic panels laid on the reverse sides of the light reduction plates can be used as a power source of an electric heat tracing module to save energy.

Description

technical field [0001] The invention belongs to the technical field of dimming outside a tunnel, and relates to a dimming device and method outside a tunnel in a snow area. Background technique [0002] For highway tunnels located in freezing regions, the negative impact of snow accumulation on the tunnel lighting system, driving safety and comfort cannot be ignored. The reflectivity of the snow to sunlight is extremely high, reaching nearly 95%. Looking directly at the snow is like looking directly at the sun. The existence of snow outside the cave increases the difference in brightness between the inside and outside of the tunnel. Significant "black hole effect". The process of driving from outside the cave into the cave is a process of visual dark adaptation. During this process, people's ability to recognize the surrounding environment gradually improves until they fully adapt to the dark environment in the cave. Due to the existence of snow, the driver's retinal photo...

AI Technical Summary

Problems solved by technology

At present, the design of the form and length of light-reducing structures outside the tunnel lacks a corresponding theoretical basis, and the setting mechanism is not clear.

If the common light-reducing structures outside the tunnel, such as reinforced concrete grilles and sunshades, are implemented in tunnels in snowy areas, snow will also accumulate on the top of the structures, which cannot play the role of light reduction and snow reflection

There is still a lack of relevant research on light reduction outside tunnels in cold regions at home and abroad

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