Device for illuminating indoors by using sunlight

Abstract

This invention discloses a sunlight collecting device composed of a two-dimensional tracer, optical collector, an indirect reflector, two-dimensional adjust reflector, reflecting mirror mounted outside of a window of a place necessary for collecting light, solar energy photo-voltaic battery, photosensitive sensor, coder and central controller. After the optical collector collects direct sunlight,the indirect reflector corrects it to be parallel light to be reflected to a definite place and reflected indoor by the reflection mirror. The device motion is controlled by the central controller and a coder is mounted on the operating motor to record the motor operation angle.

Description

technical field [0001] The invention relates to a sunlight lighting device that conducts sunlight indoors, especially a device that can automatically track the sun, gather direct sunlight and filter out some ultraviolet rays and infrared rays, and then transmit it to the room for lighting, which belongs to the solar energy utilization technology field. Background technique [0002] Using sunlight indoors as much as possible can not only save a lot of energy, but also improve the quality of the indoor environment. Along with the history of human beings building houses, daylighting has always been an important factor that must be considered in the design and construction of the architectural field. The angle of sunlight irradiation changes with time, and the sunlight irradiation situation will change in different seasons and different climates. Therefore, for a building, the amount of sunlight and the angle of illumination are different at differen...

AI Technical Summary

Problems solved by technology

The main disadvantage of this device is that it is only suitable for rooms directly below the roof of the building; in the morning and evening, the intensity of sunlight is relatively small, because the angle between the light receiving surface of the device and the direct sunlight is relatively large. , so there is very little light that can be introduced into the room at these moments, and these moments are the most insufficient lighting in the building, mainly because the lighting surface of the device only rotates in one-dimensional direction, and the effective area of ​​the lighting surface cannot be maximized.

Compared with clock calculation control, this control method is more accurate, but it also has the following disadvantages: if the sky is covered by clouds, the control system cannot get the input signal of the sensor, and there will be no way to continuously track the position of the sun

In cloudy weather conditions, the brightness of the edge of the cloud may become the strongest light. At this time, the system will not track the position of the sun. If the number of sensors installed in the device is small, the azimuth range covered is small. Then after the sun comes out, the control system may not be able to continue to track the position of the sun, and this tracking method is likely to cause flickering indoors

[0009] These two two-dimensional tracking control methods cannot well meet the needs of the device of the present invention to realize large-area lighting control

[0010] Another noteworthy fact is that the existing sunlight lighting devices have not effectively controlled the introduction of indoor sunlight spectrum.

In addition to visible light, sunlight also contains a large amount of infrared rays and ultraviolet rays. Among them, infrared rays have higher thermal energy. If infrared rays are indiscriminately guided indoors in hot weather, it will undoubtedly increase the indoor temperature and increase cooling energy consumption. In this case, not only can not save energy, but it will increase energy consumption; sunlight contains a lot of ultraviolet rays, if the ultraviolet rays are introduced into the room indiscriminately, it will cause harm to the human body

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