Light-emitting diode (LED) fluorescence lampshade

Abstract

The invention discloses a light-emitting diode (LED) fluorescence lampshade. The LED fluorescence lampshade is characterized in that liquid stateful epoxy resin or silica gel serves as basic materials, yellow fluorescent powders serve as filling materials, the proportion is that 0.3-10 parts by weight of the yellow fluorescent powders are added into every 100 parts by weight of the basic materials so that raw materials for preparing the fluorescence lampshade are formed, wherein the raw materials are used for manufacturing the fluorescence lampshade, then the needed formative fluorescence lampshade is formed after injection moulding and solidifying demoulding are conducted. The grain sizes of fluorescent powder grains are 5-25 micrometers. The epoxy resin is double epoxy resin. The LED fluorescence lampshade has the advantages of being simple in moulding process, good in light transmission homogenization and long in service life.

Description

technical field [0001] The invention relates to LED lighting technology, in particular to an LED fluorescent lamp shade used in conjunction with an LED light source. Background technique [0002] With the widespread use of LED light-emitting technology in the lighting field, LED device lighting technology has developed rapidly. There are two main ways for current LED lights to produce white light: [0003] First, combine red, green and blue LED chips to produce white light; [0004] Second, use blue light, or a combination of blue and red LED chips, with a covering layer made of yellow phosphor powder and transparent colloid to achieve white light emission. [0005] In the above-mentioned second LED formation and emission technology that is widely used at present, the method and application method of the yellow phosphor coating that leads to white light generation are not only critical to the luminous performance of white light LEDs, but also have a great impact on the man...

AI Technical Summary

Problems solved by technology

However, the shortcomings of this traditional process are also very obvious:

[0007] 1. During the coating process of the phosphor mixture coating layer, a yellow circle or a yellow circle phenomenon will occur due to the influence of the cup mouth shape of the cup bracket that fixes the LED chip, which will affect the light quality;

[0008] 2. Since the dispensing method is to use gravity to let the phosphor mixture flow and then wrap the LED, it is difficult to ensure the uniformity of the phosphor coating, resulting in non-uniform light output;

[0009] 3. Since the phosphor powder mixed coating coated on each LED emitter is tightly wrapped around the LED chip, the temperature generated by the chip is directly transmitted to the phosphor powder, which is easy to cause the phosphor to mutate and cause the LED emitter to aggravate light decay , which greatly affects the service life of the product

Although this solution can effectively overcome the defects of the aforementioned technology, the LED lampshade proposed by this technology is made of fluorescent powder and a mixed material with light transmission function. The production process is complicated, the light transmission uniformity of the product is low, and the production cost is high. It is not suitable for small and medium-sized LED enterprises, and it is not conducive to reducing the production cost of LED lighting products

In addition, spraying yellow phosphor powder on the transparent lampshade by spraying technology is relatively simple, but it is not suitable for industrial production of lampshades, and the luminous effect will be affected by the peeling off of the sprayed layer during use; unnecessary harmful light pollution