Manufacturing method of rhythm illumination LED light source

Abstract

The invention discloses a manufacturing method of a rhythm lighting LED (light-emitting diode) light source, which comprises the following steps: changing a substrate structure, changing one cup into two cups or a plurality of cups, independently dispensing and controlling each cup, matching 440-450nm blue light wafers with 460-480nm, matching 530-560nm yellow green powder and 640-670nm red powder in the daytime, and matching 440-460nm blue light wafers with 530-560nm yellow green powder and 640-670nm red powder in the nighttime. According to the present invention, the melatonin powder is adopted as the raw material, the 520-540 nm silicate green powder, the 545-560 nm yellow powder and the 640-660 nm red powder are matched to prepare the melatonin powder, the energy at the daytime version of 470-480 nm is high so as to inhibit the melatonin secretion, the energy at the night version of 470-480 nm is low so as to promote the melatonin secretion, and the color rendering index is greater than 90. The melatonin light source is reasonable in structural design, the light emitting efficiency of the light source is higher, the energy of low-wave (440-460 nm) blue light is lower, the energy of 470-480 nm can be adjusted according to the requirements of people for light in different time periods so as to control secretion of melatonin, and the cost performance is better.

Description

technical field [0001] The invention relates to the technical field of LED packaging, in particular to a method for manufacturing a rhythmic lighting LED light source. Background technique [0002] LED light source is the third generation light source, it is a kind of green light source with the characteristics of environmental protection, energy saving, long life, etc. At present, there are mainly two kinds of LED light sources, the first is blue light chip with green phosphor powder, the second is blue light The chip is matched with green phosphor and red phosphor. Although the above schemes can achieve a CRI of 70-90Ra, but the energy of the blue band in the white LED is relatively large, and the LED lighting source will cause blue light damage to the human body if it is irradiated for a long time, which will damage the retina. Cause photochemical damage. In addition, in terms of biological effects, studies have shown that blue light with a wavelength of 470-480nm in whit...

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Problems solved by technology

[0002] LED light source is the third generation light source, it is a kind of green light source with the characteristics of environmental protection, energy saving, long life, etc. At present, there are mainly two kinds of LED light sources, the first is blue light chip with green phosphor powder, the second is blue light The chip is matched with green phosphor and red phosphor. Although the above schemes can achieve a CRI of 70-90Ra, but the energy of the blue band in the white LED is relatively large, and the LED lighting source will cause blue light damage to the human body if it is irradiated for a long time, which will damage the retina. Cause photochemical damage. In addition, in terms of biological effects, studies have shown that blue light with a wavelength of 470-480nm in white LEDs can affect the secretion of melatonin. If used improperly, it may cause sleep disorders and a series of dysfunction

The latest research at home and abroad shows that the spectral quality of "rich blue" can easily affect the rhythm of the human body, thereby reducing immunity. At present, solving the harm of blue light to the human body has become an urgent problem for the LED industry.

[0003] In recent years, as people's living standards have become higher and higher, health has become more and more important, and the demand for light quality has become higher and higher. The concept of rhythmic lighting LED light sources has emerged as the times require. One of the characteristics of rhythmic lighting sources is The wavelength of low-wave blue light has low energy, and the wavelength of 470-480nm can adjust the corresponding energy spectrum according to the needs of people for light at different times to control the secretion of melatonin. This technology is considered to be a mainstream direction of semiconductor lighting technology in the future. At present, the following two methods are commonly used to make rhythmic lighting LED light sources. The first method uses conventional blue light chip wavelengths plus special phosphors. Although this solution is cheap and relatively low in blue light, the energy of short-wave blue light is still high, and 470-480nm is not available. The secretion of melatonin can be controlled by adjusting the demand for light according to different time periods of the person. The second is to use purple light chips and special phosphors to make it. Although the low-wave blue light wavelength energy is low, the energy of 470-480nm is relatively high, but It is not possible to control the secretion of melatonin by adjusting the demand for light according to people's different time periods, and due to the limitations of the purple light chip itself, there will be problems of high price and low photoelectric conversion rate, and because of the purple light itself UV radiation leads to a shorter lifespan of the product

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