Sun-shading and lighting device at tunnel entrance

Abstract

The invention discloses a sun-shading and lighting device at a tunnel entrance. The device comprises a sunshade, a solar panel, tunnel lamps and a light guide pipe, the sunshade is fixedly arranged atthe tunnel entrance to realize light and shade transition of the tunnel entrance section in order to weaken the black hole effect, the solar panel is arranged on the upper top surface of the sunshade, and is used for converting solar energy into electric energy, the electric energy is supplied to the tunnel lamps electrically connected with the solar panel and uniformly arranged on the inner topsurface of the whole tunnel for use, the light guide pipe is arranged at the top in the tunnel entrance section, and is used for guiding natural light into the tunnel entrance section in sunny days toprovide illumination in order to save energy and increase the light comfort level, the illumination of the tunnel entrance section in cloudy days or at night is supplemented by the tunnel lamps arranged at the tunnel entrance section, and the tunnel lamps behind the tunnel entrance section are turned on always, so the sun-shading and lighting device at the tunnel entrance reduces energy requiredby high-intensity lighting of the tunnel entrance section, the construction cost of the tunnel entrance section is reduced, the safety coefficient is increased, and meanwhile, the energy is saved.

Description

technical field [0001] The invention relates to the technical field of tunnel lighting, in particular to a sunshade and daylighting device at a tunnel entrance. Background technique [0002] The entrance section of the tunnel is the junction of the closed dark space inside the tunnel and the bright space outside. Due to the huge brightness difference inside and outside the tunnel, the driver will have a huge visual light and dark mutation when entering the tunnel, forming a "black hole effect" when entering the tunnel during the day, which is extremely It is easy to cause traffic safety accidents. Therefore, in order to alleviate this phenomenon, it is necessary to enhance the lighting at the entrance section, which leads to an increase in the construction cost and energy consumption of the lighting at the tunnel entrance section. [0003] An important index L in tunnel design 20 (S) is the luminance outside the tunnel, which is the average luminance measured at the parkin...

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Problems solved by technology

[0005] In order to alleviate the "black hole effect" at the entrance of the tunnel, segmented lighting is often used in existing tunnels, that is, the entrance section, transition section, middle section and exit section of the tunnel are illuminated separately, and the brightness is adjusted according to actual needs. In the existing technologies, most of them use the traditional power generation mode to provide energy for the lighting in the tunnel, so this method does not greatly reduce the lighting energy consumption; there are also sunshades at the entrance of some tunnels, and large-scale sunshades not only cause material damage In addition, ordinary awnings with constant transmittance cannot realize the transition of light and dark light well, so the improvement effect on the "black hole effect" is not good

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