Novel LED (light emitting diode) white light lamp and white light generation method thereof

Abstract

The invention discloses a novel LED (light emitting diode) white light lamp and a white light generation method of the lamp. The LED white light lamp comprises a substrate arranged in a lamp body, a blue light device or a white light device arranged on the substrate, at least one blue LED chip arranged in the blue light device or the white light device, and a lamp shade arranged in front of the lamp body, wherein yellow fluorescent powder is sprayed on the inner surface or outer surface of the lamp shade. The white light generation method of the novel LED white light lamp comprises the following steps: the blue LED chip in the blue light device generates a blue light to excite the yellow fluorescent powder on the inner wall of the lamp shade to generate white light on the surface of the lamp shade; and the blue LED chip in the white light device generates a blue light to excite the yellow fluorescent powder on the inner wall of the lamp shade to generate white light on the surface of the lamp shade. The LED lamp produced by a new method can effectively lower the temperature of the light emitting device because the white light is not excited on the light emitting device, thereby prolonging the service life of the lamp.

Description

technical field [0001] The invention also relates to an LED lighting appliance, in particular to a novel LED white light lamp. The invention relates to a method for generating white light of an LED lamp, in particular to a method for generating white light of a novel LED white light lamp. Background technique [0002] LED comes from the abbreviation of LIGHT EMITTING DIODE in English, which means light-emitting diode. The structure of the simplest light-emitting diode includes a P-type semiconductor, an N-type semiconductor and a PN junction formed between them. When the current passes through the diode, charge carriers are generated at the above-mentioned PN junction, that is, electrons and Holes, electrons and holes combine and release energy in the form of photons. Adding specific semiconductor chemicals at the PN junction can make the diode emit light of a specific color, such as adding indium gallium nitride (In0.2Ga0.8N ) can produce pure blue light, adding gallium n...

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Problems solved by technology

[0003] However, in ordinary lighting occasions, colored LED lights will make the object appear to change color, which is not as good as white light that can truly reflect the color of the object. Therefore, a new high-quality white LED lamp suitable for ordinary lighting occasions has been developed. It has always been the goal pursued by peers in the industry

In the prior art, the white light emitted by the LED lamp is made by first causing the LED to generate light of several different wavelengths, and then using the principle of the lens to mix the light of several different wavelengths according to a certain intensity ratio, such as blue light and yellow light. Light is mixed into white light, or red, green, and blue light are mixed into white light. However, because the phosphor is mixed from red and green phosphors, it is difficult to ensure sufficient and uniform mixing during the mixing process. Or with the prolongation of the storage time, the mixed fluorescent powder will have precipitation, etc., so that the ratio of LED red and green phosphor powder produced by the same batch of ingredients may be different, resulting in the same batch of LEDs. The chromatic aberration, because the phosphor powder has been adjusted according to the predetermined ratio, the chromatic aberration cannot be adjusted, and the LED with serious chromatic aberration can only be discarded as waste or transferred to other occasions with low requirements, so this manufacturing method is adopted The pass rate of manufactured LED lamp products is not high

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