Microstructure anti-glare film or plate for LED lamps and preparation method of microstructure anti-glare film or plate

Abstract

The invention discloses a microstructure anti-glare film or plate for LED lamps and a preparation method of the microstructure anti-glare film or plate. The microstructure anti-glare film or plate comprises a transparent bottom film or bottom plate and a microstructure adhered to one side of the transparent bottom film or bottom plate; and the microstructure is a toothed disc and formed by sequentially and spirally distributing outwards of a continuous edge by taking the center of a circle as a starting point, the center distance between any adjacent edges in any radial direction is the same,and the height between any adjacent edges in any radial direction is the same. The preparation method is a UV coating transfer printing and transfer printing copy method. According to the microstructure anti-glare film or plate for the LED lamps and the preparation method of the microstructure anti-glare film or plate, through design of base materials and the microstructure, performance of the microstructure anti-glare film or plate is effectively improved, and the requirement that a UGR value of lamps is less than 19 is met; and a low-temperature UV coating transfer printing technology and amode of nickel plate wrapped with a coarse billet roll are adopted to replace precision roller molds, not only are the precision and consistency of the microstructure significantly improved, but alsoloss of the precision molds is reduced effectively, and the cost of the molds is saved; and the preparation method is continuous production, so that the production efficiency is high, comprehensive performance is good, and wide market competitiveness is achieved.

Description

technical field [0001] The invention relates to the field of LED lighting anti-glare technology, in particular to a microstructure anti-glare film or plate for LED lamps and a preparation method thereof. Background technique [0002] According to the standard requirements of ANSI / IESNA RP1-04, EN12464 and GB50043-2004, the lamps and lanterns should reach the uniform glare value (UGR) <19, thus greatly improving the lighting comfort. [0003] Before the popularization of LED lamps, the traditional office lighting anti-glare lamps are grille lamps, which hide the lights in metal reflectors with a shielding angle of more than 30 degrees, and at the same time use aluminum grilles on the outside to further shield axial glare. Traditional grille lights can easily achieve UGR<13, but for LED panel lights, because the structure itself is not suitable for anti-glare treatment, the high-angle light can only be collected to the middle working surface through anti-glare film or pl...

AI Technical Summary

Problems solved by technology

Among them, the extruded prism plate is made of a steel roll mold with a negative prism structure, and the prism shape is directly extruded on the surface when the PS or PMMA sheet is extruded. Due to the thermal expansion and water absorption of PS and PMMA, it is formed at high temperature. It is difficult to guarantee the accuracy and consistency of the prism structure. In addition, the steel mold is easy to wear under continuous rolling at high temperature, so the steel mold should be repaired regularly

Another kind of hot-pressed prism board is to heat the optical-grade transparent PMMA board and use a large-size flat steel mold for hot-press molding. This process has higher precision than extrusion molding, but the cost is too high, and the large size and high precision The cost of opening a flat steel mold is high, and the investment cost of large-scale hot-press forming equipment is also high. In addition, the hot-press production time of a single prism plate is also long, the efficiency is low, and the structure is large, which looks a little dazzling

The biggest disadvantage of the prism panels produced by the two types of processes is that they cannot achieve a full table UGR<19 when performing UGR tests on lamps.

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