Compound co-extrusion board with light guide and diffusion functions, and manufacturing method thereof

Abstract

The invention discloses a compound co-extrusion board with light guide and diffusion functions, and a manufacturing method thereof, and relates to the technical field of LED illumination. The compoundco-extrusion board with the light guide and diffusion functions comprises a PMMA light guide layer and a PMMA diffusion layer; and the PMMA light guide layer and the PMMA diffusion layer are made into the compound co-extrusion board with the light guide and diffusion functions by adopting a co-extrusion board process. The invention further discloses a manufacturing method of the compound co-extrusion board with the light guide and diffusion functions. The invention provides a structure for combining a light guide plate and a diffusion plate of an LED surface light source; the co-extrusion board process is adopted for co-extruding a PMMA board having a diffusion function and added with a light diffusion agent, and a PMMA board with a light guide function, so that the finished compound board has the light guide function and the light diffusion function at the same time; and therefore, the parts of the LED surface light source are reduced, the assembly processes are reduced, the production and processing efficiency is improved, and the cost of the LED surface light source is reduced.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a composite co-extruded plate with light guiding and diffusing functions and a preparation method thereof. Background technique [0002] LED lighting surface light source, as a new type of energy-saving light source, has been vigorously promoted and used, representing the future development direction of lighting fixtures. However, due to the inherent lighting characteristics of LED lights, there are problems such as glare and limited irradiation angles. In order to obtain a uniform and non-glare lighting surface light source, the daily LED surface light source adopts the following structure to solve the problem: [0003] 1. The structure of the existing LED surface light source from top to bottom is: diffusion plate, light guide plate, LED light bar, aluminum alloy frame, and reflective film; [0004] 2. After the light comes out from the LED lamp beads, it is exported thr...

AI Technical Summary

Problems solved by technology

[0007] However, the diffusion plate and the light guide plate of the existing LED surface light source structure are bonded by double-sided tape or adhesive, requiring assemblers to perform a series of operations such as glue application, alignment, and assembly. The process is complicated and affects work efficiency; Moreover, the presence of an adhesive layer between the diffuser plate and the light guide plate will affect the light passing efficiency, resulting in a decrease in the utilization efficiency of LED light.

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