Anti-ultraviolet planar light source optical structure, anti-UV diffusion layer and LED panel light

Abstract

The invention discloses an anti-ultraviolet planar light source optical structure, an anti-ultraviolet diffusion layer and an LED panel light. The optical structure comprises an anti-ultraviolet diffusion layer, a light guiding layer and a reflective layer. The light guiding layer has two opposite surfaces including a back surface and a light emitting surface. The reflective layer is located on the back surface of the light guiding layer, and the anti-ultraviolet diffusion layer is located on the light emitting surface of the light guiding layer. A plurality of light guiding points are arranged between the reflective layer and the light guiding layer. The anti-ultraviolet diffusion layer is a diffusion plate made of an anti-ultraviolet material, and the diffusion plate comprises transparent plastic and master batch, wherein the transparent plastic accounts for 92-99.5% of the total weight of the diffusion plate, and the master batch accounts for 0.5-8% of the total weight of the diffusion plate. The anti-ultraviolet diffusion layer is adopted, which can prevent ultraviolet rays in a surrounding external environment from illuminating the light guiding layer through the anti-ultraviolet diffusion layer; the problems such as deformation, discoloration, yellowing and damage of the light guiding layer due to ultraviolet irradiation can be avoided; the light guiding layer is protected; and the problems such as brightness reduction and uneven brightness of the optical structure can be avoided.

Description

technical field [0001] The invention belongs to the technical field of optical structures, and in particular relates to an optical structure capable of resisting ultraviolet rays and an LED panel lamp. Background technique [0002] LED (Light Emitting Diode, Light Emitting Diode) technology has been widely promoted due to its advantages of power saving, high brightness, long service life and good shock resistance. In recent years, LED lamps have been widely used in daily lighting and displays. Such as LED panel lights, this type of LED panel lights are square and planar and the components inside are also planar. The planar reflective layer, light guide layer and anti-ultraviolet diffusion layer are installed in sequence in a rectangular outer frame, and LED strips are installed inside the outer frame and on the side of the light guide layer. Under the joint action of the reflective layer and the light guide layer, the light undergoes multiple reflections to improve uniformit...

AI Technical Summary

Problems solved by technology

[0010] The main technical problem to be solved by the present invention is to provide an anti-ultraviolet planar light source optical structure, an anti-ultraviolet diffusion layer and an LED flat panel lamp. The optical structure can prevent the ultraviolet rays in the surrounding external environment from penetrating The anti-ultraviolet diffusion layer irradiates the light guide layer to avoid deformation, discoloration, yellowing and damage of the light guide layer due to ultraviolet radiation, protect the light guide layer, slow down the aging speed of the light guide layer and the optical structure, and not only avoid the brightness of the optical structure Problems such as reduction and uneven brightness can also avoid the scrapping of the entire optical structure caused by ultraviolet radiation; the buffer layer can be a plastic product; it has the function of buffering and anti-deformation; the wedge-shaped light guide layer can be used with one-sided light input plus buffer material ; In addition, the spliced ​​light guide layer makes it suitable for large flat-panel lights, and has uniform light emission, low cost, scientific structural design and easy implementation, etc.

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