Sunlight conveying system for enhancing illumination of highway tunnel

Abstract

The invention discloses a sunlight conveying system for enhancing illumination of a highway tunnel. The system can efficiently utilize sunlight to enhance illumination of a specified distance in an entrance and an exit of the tunnel and can avoid adverse factors that the sunlight stimulates eyes of a driver to influence driving safety, and comprises a support fixedly arranged on the outer side of a tunnel portal, wherein the support is provided with a plurality of angle-adjustable mirror reflectors, the mirror reflectors reflect sunlight into the tunnel in a directional mode in the incident direction of the sunlight; the top of the tunnel portal is sequentially provided with a plurality of diffuse reflectors at intervals from outside to inside, the heights of the diffuse reflectors are sequentially decreased, and the quasi-planes of the diffuse reflectors and the vertical line are arranged in an angle mode according to the driving direction of a vehicle; when the diffuse reflectors are installed at the entrance of the tunnel, the included angle beta 1 between the quasi-planes and the vertical line is larger than a set angle; and when the diffuse reflectors are installed at the exit of the tunnel, the included angle beta 2 between the quasi-planes and the vertical line is smaller than the set angle, the diffuse reflectors diffusely reflect sunlight directionally reflected by the diffuse reflectors to the road surface in the tunnel for enhanced illumination, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization, in particular to a sunlight delivery system for enhanced lighting in road tunnels. Background technique [0002] The rapid development of the transportation industry marked by expressways has become one of the characteristics of the country's economic development. However, the operation and management costs of highway tunnels, especially the electricity costs for tunnel lighting, have become a huge expenditure, and the contradiction between safety and energy conservation has become increasingly prominent. For the driver, if the speed of the car is too large at the entrance and exit of the tunnel, the brightness gradient will cause the vision to be unable to adjust as soon as possible, resulting in "black hole" and "white hole" effects, which will increase the probability of traffic accidents. In order to achieve energy saving under the premise of safety, the state stipulates that...

AI Technical Summary

Problems solved by technology

[0003] At present, conventional power is mostly used in tunnel enhanced lighting, and high-pressure sodium lamps, LED lights, etc. are used as lighting sources. However, in actual engineering, due to the harsh working environment of the sunlight sensor in the closed-loop automatic control, for example: too much dust attached to the surface It is equivalent to the practical problem of high system failure rate caused by factors such as rainy days or even night time, remote location and inconvenient maintenance, forcing people to give up the automatic control function to ensure the reliability of the system. Usually, the lighting system is strengthened according to the strongest in summer The constant lighting system equipped with sunlight design works in the same working state as the basic lighting system, thus causing a huge waste of electric energy while ensuring high reliability to meet the requirements

In the related art, the sunshine conveyor based on optical fiber transmission uses sunlight in the enhanced lighting project with a length of 50 meters at the entrance and exit of the tunnel, and it is found that the system still has high system cost, in which optical fiber accounts for 70% of the total system cost, and The technical bottleneck of long-distance transmission light energy loss is as high as 80%, which directly affects the promotion and application of new technologies

Images