LED light source module with high color rendering index and LED lamp

Abstract

The invention discloses an LED light source module with a high color rendering index and an LED lamp. The LED light source module comprises a first LED light source providing warm white light, a second LED light source providing blue light, a third LED light source providing green light and a fourth LED light source providing red light, wherein the first LED light source comprises a first blue light LED chip with the peak wavelength being 442-450 nm, the first blue light LED chip is coated with green light fluorescent powder with the peak wavelength being 525-540 nm and orange fluorescent powder with the peak wavelength being 580-600 nm, and the proportions of luminous powers of blue light, green light end orange light provided in the warm white light are 0.02-0.04, 0.35-0.39 and 0.59-0.61 respectively; the second LED light source comprises a second blue light LED chip with the peak wavelength being 442-450 nm; the third LED light source comprises a green light LED chip with the peak wavelength being 490-500 nm; the fourth LED light source comprises a red light LED chip with the peak wavelength being 627-635 nm. By the adoption of the LED light source module and the LED lamp, the light distribution scheme is easy to achieve, and the light distribution effect is good.

Description

【Technical field】 [0001] The invention relates to LED lighting technology, in particular to an LED light source module and an LED lamp with a high color rendering index. 【Background technique】 [0002] As a new generation of lighting source, the lighting scheme that uses LED chips to generate white light is widely used in the lighting field because of its high efficiency, energy saving, environmental protection and long life. With the improvement of living standards, people's requirements for lighting quality are getting higher and higher. Not only require the color temperature to be adjustable, but also have a high color rendering index, especially in some special applications, such as museums, hospitals, art rooms, etc., the color rendering index is higher, all above 90, and some for special display The requirement of color index R9 is also above 90 or higher. [0003] There are three main ways to generate white light through LED chips: (1) blue LED chip + YAG yellow pho...

AI Technical Summary

Problems solved by technology

[0004] In addition, when the LED chip mixes light to obtain white light, it also has the same defect as most lighting sources, that is, the problem of light decay.

The most direct manifestation of light decay is to affect the luminous flux of LEDs. Light decay will also have a certain impact on color temperature and color rendering index, which will make it difficult for LEDs to be used in medical, photography and other occasions that have high requirements for light sources.

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