Light distribution structure of light-emitting diode (LED) lamp

Abstract

The invention discloses a light distribution structure of a light-emitting diode (LED) lamp. The light distribution structure comprises a printed circuit board (PCB) aluminum substrate provided with a lamp bead group in a welding mode and a plastic lens used for covering the lamp bead group; the lamp bead group is composed of four medium-power 3030 bicrystal lamp beads which are distributed in a square shape; the plastic lens is provided with a convex curved surface cover used for covering the lamp bead group; the plastic lens is made of an ultraviolet-proof polycarbonate (PC) material. The light distribution structure of the LED lamp is compact and reasonable in structure and good in heat dissipation effect, and the size, lighting effect and cost performance ratio can be optimized when compared with the prior art.

Description

technical field [0001] The invention relates to a light distribution structure of an LED lamp. Background technique [0002] The light distribution combination adopted by LED street lamps in the prior art uses countless small single-particle optical lenses, reflective lenses using high-power LED lamp beads, and COB integrated single-piece large lenses. Numerous small single-particle optical lenses lead to a relatively large PCB aluminum plate area and high cost. The use of high-power LED lamp beads leads to relatively high cost. There is no advantage in light efficiency. The single-piece large lens is difficult to manufacture regardless of plastic or glass. The yield rate is not high. . [0003] At this stage, in order to improve light efficiency and save costs, more and more companies want to use medium-power LED lamp beads. The material of the single large lens is mostly glass, and a few are plexiglass or plastics. Glass has the characteristics of high light transmittan...

AI Technical Summary

Problems solved by technology

Glass has the characteristics of high light transmittance, easy to clean and good weather resistance, but the overall cost is high and the process stability is poor. The light transmittance of plexiglass is low and it is easy to yellow; the injection molding process of large plastic lenses is too complicated, the cost is too high, and the dimensional stability is not good. it is good

Small single-particle separated plastic lenses or single-particle conjoined lenses are easy to process and low in cost, but the area occupied is too large, resulting in relatively large PCB aluminum plate area and lamp housing area, high cost, and increased risk of waterproofing area , and the design flexibility of the lamp body is not enough

[0004] Generally speaking, the area occupied by single-particle plastic lenses in the prior art is too large, the overall cost of lamps is high, and the process of single large lenses is complex and poor in stability

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