A solar light collection and transmission device based on a hollow flexible light guide

Abstract

The invention discloses a sunlight collection and conduction device based on a hollow-core flexible light conduction pipe. The sunlight collection and conduction device comprises a lighting conduction pipe, a condensation conduction pipe and a flexible light transmitting conduction pipe. A first optical reflection film is attached to the inner wall of the lighting conduction pipe, and the lighting conduction pipe is used for providing an incidence end face of a wide angle of 180-degree for sunlight. One end of the condensation conduction pipe is connected with an emergent end face of the lighting conduction pipe, a second optical reflection film is attached to the inner wall of the condensation conduction pipe, and the condensation conduction pipe is used for carrying out reflecting spreading after collected sunlight is coupled and condensed. A third optical reflection film is attached to the inner wall of the flexible light transmitting conduction pipe, and the flexible light transmitting conduction pipe is used for receiving all light entering the flexible light transmitting conduction pipe and achieving long-distance lossless transmission. On the premise of keeping flexible light transmission and low transmission losses of the light conduction pipe, the light collection angle of the device is greatly increased, the limitation of a total-reflection critical angle does not exist, the movement frequency of the mechanical device and the requirement for precision of the mechanical device can be properly reduced, the fault rate of the mechanical structure is lowered, and the service life of the device is greatly prolonged. The light conduction pipe coupling efficiency is improved, and low-cost, high-efficiency and long-distance sunlight conduction illumination is achieved.

Description

Technical field [0001] The invention belongs to the technical field of light guide lighting, and more specifically, relates to a solar light collecting and conducting device based on a hollow-core flexible light guide. Background technique [0002] Under the international wave of advocating green resources and pursuing sustainable development, making full use of solar energy, a clean energy source, has become a topic of concern. Due to the low energy conversion efficiency of current photovoltaic power generation technology, the technology of directly introducing sunlight into indoor lighting through light pipes is favored by all parties. [0003] At present, large-diameter steel structure light pipes are mostly used in light guide lighting. The advantage is that light entering the light pipe at any incident angle can be reflected on the inner wall to be transmitted into the room. This method does not require the lighting surface of the light guide lighting device to accurately mov...

AI Technical Summary

Problems solved by technology

Its advantage is that the silica fiber has low loss, and sunlight can be transmitted over a long distance; its disadvantage is that the light-receiving aperture angle of the fiber is very small and difficult to increase (determined by the refractive index difference between its core and cladding), so a light guide lighting device is required The lighting surface must face the incident direction of sunlight very accurately in real time to ensure that the light focused by the lens can enter the optical fiber transmission, which increases the failure rate and maintenance cost of the device to a certain extent

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