Rhythm-adjustable lighting LED light source

Abstract

The utility model relates to the technical field of LEDs, in particular to a rhythm-adjustable lighting LED light source which comprises a support and a plurality of LED wafers, a bowl cup is arranged on the support, a warm white light function area and a pure white light function area are formed in the area, located in the bowl cup, of the support, the LED wafers with the same number are distributed in the warm white light function area and the pure white light function area, and the LED wafers are arranged on the support. A first fluorescent glue layer is arranged on each LED wafer in the warm white light function area, a second fluorescent glue layer covering the first fluorescent glue layer and each LED wafer in the pure white light function area is filled in the bowl cup, and the first fluorescent glue layer is different from the second fluorescent glue layer. According to the LED light source, the color temperature is adjustable, the rhythm factor is controllable, the single light source can achieve the effect of double colors of a single cup, and meanwhile the light uniformity is good; meanwhile, M / P ratio and S / P ratio in the mixed light full-color-temperature section are basically the same as those of sunlight with the same color temperature, and rest and work of the old are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of LEDs, in particular to a lighting LED light source with adjustable rhythm. Background Art

[0002] As we all know, most countries and regions in the world are rapidly entering an aging society. The problems faced by the elderly, such as declining physical functions, impaired perception, especially decreased visual ability, and more prone to circadian rhythm disorders, must be taken into account in elderly-friendly lighting.

[0003] From a visual point of view, the decline in visual function of the elderly is mainly due to changes in the physiological structure of the eyes, with notable features such as pupil constriction, a sharp decrease in the amount of light entering the retina, yellowing and hardening of the lens, reduced transparency, and increased flashes in the eyes.

[0004] Another is reduced sensitivity. The most common reason is insufficient eye adjustment, such as presbyopia, and dark adaptation. Young people go from a brighter environment to a darker environment and have a dark light adaptation process, while the elderly will be slower. These are all things that should be considered in elderly-friendly lighting.

[0005] First, as they age, the pupils of the elderly gradually shrink. Under the conditions of natural daylight adaptation, the pupil diameter of a 70-year-old is about half that of a 20-year-old. In other words, its area is only 25%. Young people think it is a normal light environment, but the elderly only receive 25% of the light, so they will feel that the light is dim.

[0006] Second, as people age, their lenses turn yellow. For example, compared with young people, the transmittance of red and blue light bands of 80, 65 and 50-year-olds is basically the same, but the transmittance of short-wave blue light bands drops sharply. For the elderly, it is equivalent to wearing a yellow filter to observe the world. Another problem is that the amount of light entering is further reduced, especially the blue light part.

[0007] Third, as people age, light scattering in the eye increases significantly, making them particularly sensitive to glare. For example, the elderly tend to find light dazzling.

[0008] In addition to the visual issues mentioned above, problems with circadian rhythm are also important to consider.

[0009] For example, the human body has a 24-hour cycle from day to night, regulating some important body functions, including metabolism, sleep and wakefulness, heart rate, blood pressure, etc. This is a very important physiological mechanism. Physiological mechanisms are closely related to health.

[0010] The light environment has a great impact on the human body's circadian rhythm. Generally, people receive strong light stimulation, natural sunlight, and avoid light stimulation at night, so that they can obtain a healthy circadian rhythm. For young people, it is easier to achieve a healthy light environment. However, for the elderly, especially the older ones, they may stay in a space for a long time during the day, and the amount of light they receive is drastically reduced, especially the blue light related to the rhythm, which makes the problem of rhythm health of the elderly more serious.

[0011] Furthermore, people of different ages have different circadian rhythm patterns. People of different ages go to bed at night and get up in the morning at different times. Disorders begin to occur when we are older. There are many reasons for this. On the one hand, the overall body function declines, the amount of light intake decreases, which has a significant impact on the rhythm. The reduction of blue light and the loss of the social clock of the elderly lead to more serious rhythm health problems. Utility Model Content

[0012] In order to solve the above-mentioned problems existing in the prior art, the utility model provides a lighting LED light source with adjustable rhythm.

[0013] In order to solve the above technical problems, the utility model adopts the following technical solutions: a rhythmically adjustable lighting LED light source, comprising a bracket and a plurality of LED chips, wherein a bowl cup is arranged on the bracket, and an area on the bracket located within the bowl cup is divided into a warm white light functional area and a positive white light functional area, wherein an equal number of the LED chips are distributed in the warm white light functional area and the positive white light functional area, and a first fluorescent glue layer is arranged on each of the LED chips located in the warm white light functional area, and the bowl cup is filled with a second fluorescent glue layer covering the first fluorescent glue layer and each of the LED chips in the positive white light functional area, and the first fluorescent glue layer is different from the second fluorescent glue layer.

[0014] Compared with the prior art, the rhythmically adjustable lighting LED light source of the utility model realizes adjustable light source color temperature and controllable rhythm factor by setting warm white light functional area and pure white light functional area, and by designing different first fluorescent glue layer and second fluorescent glue layer. Moreover, a single light source can achieve the effect of single cup dual color, and the good uniformity of light is conducive to relaxing the eyes, creating a comfortable and healthy light environment, and is conducive to the elderly to see objects clearly. The design of different first fluorescent glue layer and second fluorescent glue layer can also make the M / P ratio and S / P ratio basically the same as the sunlight with the same color temperature, which is conducive to rest and work for the elderly. The blue ratio is lower than that of sunlight to prevent blue light hazards. The landing point is controlled within the range of 2800-5300K, between the Duv=-0.003 curve and the Duv=0.006 curve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the layout structure of the LED chip in the rhythmically adjustable lighting LED light source provided by the utility model. Figure 2 It is a front view of the rhythmically adjustable lighting LED light source provided by the utility model. Figure 3 It is a back view of the rhythmically adjustable lighting LED light source provided by the utility model. Figure 4 It is a transverse cross-sectional view of the rhythmically adjustable lighting LED light source provided by the utility model. Figure 5 It is a longitudinal cross-sectional view of the rhythmically adjustable lighting LED light source provided by the utility model. Figure 6 It is a layout diagram of the first fluorescent glue layer and the second fluorescent glue layer of the rhythmically adjustable lighting LED light source provided by the utility model. Figure 7 The utility model is a schematic diagram of the structure of an isolation plate used in the preparation process of the rhythmically adjustable lighting LED light source. Figure 8 It is a bare crystal spectrum diagram of an LED chip of the lighting LED light source with adjustable rhythm provided by the utility model. Fig. 9 It is a spectrum diagram of the light quality of the warm white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.10 The utility model provides a rhythmically adjustable lighting LED light source, in which the light quality of the warm white light functional area is blue light hazard efficiency K. B，V . Fig.11 This is a comparison diagram of the similarity between the light quality of the warm white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model and the 3000K sunlight spectrum. Fig.12 It is a TV lighting index TLCI-2012 result diagram of the light quality of the warm white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.13 This is a test report diagram of the light quality of the warm white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.14 It is a spectrum diagram of the light quality of the positive white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.15 The blue light hazard efficiency K of the light quality of the positive white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model B，V . Fig.16 This is a comparison diagram of the similarity between the light quality of the positive white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model and the 3000K sunlight spectrum. Fig.17 It is a result diagram of the television lighting index TLCI-2012 of the light quality of the positive white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.18 This is a test report diagram of the light quality of the positive white light functional area in the rhythmically adjustable lighting LED light source provided by the utility model. Fig.19 The utility model provides a chromaticity and BIN drop point diagram of a rhythmically adjustable lighting LED light source. Fig. 20 It is a full color temperature spectrum diagram of the rhythmically adjustable lighting LED light source provided by the utility model. DETAILED DESCRIPTION

[0016] The following is combined with Figures 1 to 20 The technical solution of the utility model is further described in detail. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. Although this specification is described according to the implementation mode, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The various embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0017] It should be noted that the blue light hazard efficiency K B，V To calculate, that is, the blue light hazard weighted radiance L B The ratio of the corresponding photometric value is calculated as:

[0018]

[0019] Among them, K m =683lm / W, V(λ) is the spectral luminous efficiency (or visibility function), and B(λ) is the blue light hazard weighting function. K B，V Characterizes the relative amount of blue light components in visible radiation. When the brightness of lighting products is the same, K B，V The higher it is, the more likely the light source is to harm the retina.

[0020] See Figure 1 As shown, the embodiment of the utility model provides a rhythmically adjustable lighting LED light source, including a bracket 7 and a plurality of LED chips, the bracket 7 is provided with a bowl 10, the bracket 7 is provided with a bracket functional area 9 in the area inside the bowl 10, the bracket functional area 9 is divided into a warm white light functional area and a positive white light functional area, the warm white light functional area includes a warm white light negative electrode functional area 1 and a warm white light positive electrode functional area 4, and the positive white light functional area includes a positive white light negative electrode functional area 2 and a positive white light positive electrode functional area 3. The bracket 7 is also provided with a bracket marking point 8, the function of which is to facilitate feeding identification and operation identification.

[0021] Combination Figure 6 As shown, each LED chip 19 is distributed in the warm white light functional area and the positive white light functional area. The LED chips in the warm white light functional area adopt J-line arc welding wire, and the LED chips in the positive white light functional area adopt trapezoidal line arc. Figure 1As shown, there is a wire intersection 5 between the LED chips in the warm white light functional area and the LED chips in the positive white light functional area to prevent short circuit caused by wire intersection. The wires in this embodiment use J-wire arc wires, which can improve the product's resistance to cold and hot shocks, thereby improving the reliability of the product; secondly, except for the five intersecting wire arcs, the warm white light arc uses a J-wire arc, the positive white light uses a trapezoidal wire arc, and the rest use J-wire arc wires.

[0022] Recombination Figure 6 As shown, a first fluorescent glue layer 18 is provided on each of the LED chips 19 in the warm white light functional area, and the bowl cup 10 is filled with a second fluorescent glue layer 6 covering the first fluorescent glue layer 18 and each of the LED chips 19 in the positive white light functional area, and the first fluorescent glue layer 18 is different from the second fluorescent glue layer 6.

[0023] The rhythmically adjustable lighting LED light source of the embodiment of the utility model realizes adjustable light source color temperature and controllable rhythm factor by setting warm white light functional area and pure white light functional area, and by designing different first fluorescent glue layer and second fluorescent glue layer. Moreover, a single light source can achieve the effect of single cup dual color, and the good uniformity of light is conducive to relaxing the eyes, creating a comfortable and healthy light environment, and helping the elderly to see things clearly. The M / P ratio and S / P ratio are basically the same as the sunlight with the same color temperature, which is conducive to rest and work for the elderly. The blue ratio is lower than that of sunlight, preventing blue light hazards. The landing point is controlled within the range of 2800-5300K, between the Duv=-0.003 curve and the Duv=0.006 curve.

[0024] In this embodiment, Figures 4-5 As shown, the bracket 7 includes a copper material functional area 17. The copper material functional area 17 adopts a copper-nickel-on-silver process to improve the luminous flux of the product and the solderability of the product, thereby improving the reliability function of the product. Furthermore, an isolation belt 16 is provided on the copper material functional area 17. The isolation belt 16 is also called a white track, which plays the role of insulation and separation of positive and negative poles. The T-shaped waterproof groove design is adopted to play the role of waterproofing and increasing the air tightness of the product.

[0025] More specifically, if Figures 2-3 As shown, the bottom surface of the bracket 7 is provided with a warm white light negative electrode pad 11, a positive white light negative electrode pad 12, a warm white light positive electrode pad 13, a positive white light positive electrode pad 14 and a bottom functional area heat dissipation pad 15, which respectively correspond to the positions of the warm white light negative electrode functional area 1, the positive white light negative electrode functional area 2, the warm white light positive electrode functional area 4, the positive white light positive electrode functional area 3 and the bracket functional area 9.

[0026] Furthermore, a first fluorescent glue solution of a certain concentration is prepared, and the first fluorescent glue solution is sprayed on the surface of each LED in the warm white light functional area to form the first fluorescent glue layer 18; the first fluorescent glue solution is a mixture of diluent and glue, green powder with an emission wavelength of 535-545nm, red powder with an emission wavelength of 630-640nm, and red powder with an emission wavelength of 650-660nm.

[0027] Furthermore, the mass ratio of the diluent: the glue: the green powder with an emission wavelength of 535-545 nm: the red powder with an emission wavelength of 630-640 nm: the red powder with an emission wavelength of 650-660 nm=15:3:(2.0-2.5):(0.2-0.3):(0.1-0.15). Specifically, the mass ratio of the diluent: the glue: the green powder with an emission wavelength of 535-545 nm: the red powder with an emission wavelength of 630-640 nm: the red powder with an emission wavelength of 650-660 nm can be 15:3:2.0:0.2:0.1 or 15:3:2.5:0.3:0.15 or 15:3:2.3:0.25:0.13.

[0028] Furthermore, a second fluorescent glue solution of another concentration is prepared, and the second fluorescent glue solution is filled in the bowl cup 10 to form the second fluorescent glue layer 6; the second fluorescent glue solution is a mixture of glue and green powder with an emission wavelength of 535-545nm, red powder with an emission wavelength of 630-640nm, fluoride red powder with an emission wavelength of 625-635nm, and infrared fluorescent powder with an emission wavelength of 725-735nm.

[0029] Furthermore, the mass ratio of the glue: the green powder with an emission wavelength of 535-545nm: the red powder with an emission wavelength of 630-640nm: the fluoride red powder with an emission wavelength of 625-635nm: the infrared fluorescent powder with an emission wavelength of 725-735nm is 3: (0.5-0.7): (0.01-0.02): (0.25-0.5): (0.2-0.3). Specifically, the mass ratio of the glue: the green powder with an emission wavelength of 535-545nm: the red powder with an emission wavelength of 630-640nm: the fluoride red powder with an emission wavelength of 625-635nm: the infrared fluorescent powder with an emission wavelength of 725-735nm can be 3:0.5:0.01:0.25:0.2 or 3:0.7:0.02:0.5:0.3 or 3:0.6:0.015:0.35:0.25.

[0030] The light color quality of the warm white light spectrum LED in this embodiment meets the relative spectrum height shown in Table 1 below.

[0031] .

[0032] From the above Table 1 and Fig. 9 It can be seen that the rhythmically adjustable lighting LED light source of this embodiment meets the following requirements: 1. 350-500nm<0.40, 500-600nm<0.8, 600-650nm>0.8, 650-700nm>0.4, 700-780nm>0.1 The peak wavelength is between 625-635nm, and there are multiple peaks in the spectrum between 610-660nm; 2. The spectral content is Фe(350-39 9nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-1000nm) = (0-0.1%): (11.5%-12.5%): (31.6%-32.6%): (45.3%-46.3%): (9.0%-11.0%); 3. Blue-violet light content Фe (350-499nm) <10%.

[0033] See further Fig.10 The blue light hazard efficiency K of the rhythmically adjustable lighting LED light source of this embodiment is B，V =0.000321276, which is the blue light hazard efficiency K of sunlight with the same color temperature B，V Low (K B，V / K B，V (3000Ksunlight) = 90.13%), meets the blue light exemption RG0 standard, and the eye protection spectrum is healthier.

[0034] See Fig.11 The rhythmically adjustable lighting LED light source of this embodiment has excellent spectral similarity parameters with 3000K sunlight spectrum, SSI (380-780nm)>91, SSI (430-690nm)>96, which restores the color of natural light, allowing people to experience nature and enjoy sunshine bathing.

[0035] Furthermore, the 3000K light color and electrical parameters of the rhythmically adjustable lighting LED light source of this embodiment are as follows:

[0036] Table 2:

[0037]

[0038] .

[0039] It can be seen from Table 2 above that the light color parameters of the rhythmically adjustable lighting LED light source of the embodiment of the utility model meet the following requirements: 1. Ra>97, R1-15>90; 2. CQS (color quality index)>97; 3. TM-30-20, Rg>98, Rf>95, Rf, skin>95; 4. TV lighting index TLCI-2012>99; 5. Relative sunlight color gamut area index GAI-BB>100; 6. LER (effective light efficiency)=Ф(luminous flux) / Фe (optical power)>250Lm / W, which is 54.27% higher than sunlight with the same color temperature of 3000K (LER=164lm / w).

[0040] Furthermore, the important spectrum parameters of the rhythmically adjustable lighting LED light source of the embodiment of the utility model are shown in Table 3 below:

[0041]

[0042] .

[0043] As can be seen from Table 3 above, the S / P ratio (dark-light visual brightness ratio) of the rhythmically adjustable lighting LED light source of the embodiment of the utility model is basically the same as that of sunlight with the same color temperature of 3000K, which is conducive to relaxing the eyes, creating a comfortable and healthy light environment, and is conducive to the elderly seeing things clearly. The M / P ratio (non-photopic visual brightness ratio) is basically the same as that of sunlight with the same color temperature of 3000K, which is conducive to the elderly resting. The blue ratio is lower than that of sunlight, preventing blue light hazards. From the perspective of crop utilization, it is conducive to the growth and development of plants, and is suitable for the elderly to grow flowers and plants and cultivate sentiments.

[0044] like Fig.12 It can be seen that the rhythmically adjustable lighting LED light source of the embodiment of the utility model has the following characteristics: 1. S / P ratio (dark-light visual brightness ratio) is the same as the sunlight with the same color temperature of 3000K, which is conducive to relaxing the eyes, creating a comfortable and healthy light environment and seeing things clearly and brightly; 2. M / P ratio (non-photopic visual brightness ratio) is the same as the sunlight with the same color temperature of 3000K, inhibiting the secretion of melatonin, which is conducive to rest for the elderly; 3. SSI (380-780nm) spectral similarity, 100% restoration of natural light color, healthier and more ecological; 4. High TLCI-2012 parameters, the light is shone on books or fonts, the restoration is clearer, and the human body or equipment can see more clearly. 5. MDER, melanopsin equivalent daylight efficiency is the same as the sunlight with the same color temperature of 3000K, which is conducive to relaxing the eyes and clearer vision; 6. High color quality and high brightness, which is conducive to the elderly to see things clearly.

[0045] Further, see Fig.13 , test report of 3000K rhythmically adjustable lighting LED light source of the embodiment of the utility model.

[0046] The light color quality of the positive white light 5000K spectrum LED in this embodiment meets the relative spectrum height as shown in Table 4 below:

[0047]

[0048] .

[0049] From the above Table 1 and Fig.14 It can be seen that the rhythmically adjustable lighting LED light source of this embodiment satisfies: 1. 350-500nm<0.60, 0.5<500-600nm<0.6, 600-650nm>0.5, 650-700nm>0.2, 700-780nm>0.1, the peak wavelength is between 620-640nm and there are multiple peaks between 600-650nm; 2. Spectral content: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm) m): Фe (600-699nm): Фe (700-1000nm) = (0-0.2%): (25.5%-26.5%): (34.8%-35.8%): (29.8%-30.8%): (7.8%-8.8%); 3. Blue-violet light content Фe (350-499nm) <26.5%; 4.680-780nm spectrum > 0.1, which plays a role in micro-infrared light stimulation, decomposing large molecular water into small molecular water, moisturizing and protecting the eyes, which is beneficial to the protection of vision of the elderly.

[0050] Further, see Fig.15 The blue light hazard efficiency K of the rhythmically adjustable lighting LED light source of this embodiment is B，V =0.000687997, which is the blue light hazard efficiency K of sunlight with the same color temperature B，V Low (K B，V / K B，V (5000Ksunlight) = 95.11%), meets the blue light exemption RG0 standard, and the eye protection spectrum is healthier.

[0051] See Fig.16 , with excellent spectral similarity parameters of SSI (380-780nm)>91 and SSI (430-690nm)>96 with 3000K sunlight spectrum, it restores the color of natural light, allowing people to experience nature and enjoy the sun bath.

[0052] Furthermore, the rhythmically adjustable lighting LED light source of this embodiment has a spectrum similarity SSI (380-780nm)>85 and SSI (430-690nm)>92 with 5000K sunlight, and has excellent spectrum similarity parameters, which can restore the color of natural light, allowing people to experience nature and enjoy a sun bath.

[0053] The 5000K light color and electrical parameters of the rhythmically adjustable lighting LED light source of this embodiment are shown in Table 5 below:

[0054]

[0055] .

[0056] It can be seen from Table 5 above that the light color parameters of the rhythmically adjustable lighting LED light source of the embodiment of the utility model meet the following requirements: 1. Ra>95, R1-15>90; 2. CQS (color quality index)>95; 3. TM-30-20, Rg>98, Rf>95, Rf, skin>95; 4. TV lighting index TLCI-2012>99; 5. Relative sunlight color gamut area index GAI-BB>98; 6. LER (effective light efficiency)=Ф(luminous flux) / Фe (optical power)>255Lm / W, which is 24.84% higher than sunlight with the same color temperature of 5000K (LER=207.38lm / w); 7. COI (acid glycoside index)<3.3, which meets the medical light source standard.

[0057] Furthermore, the important spectrum parameters of the rhythmically adjustable lighting LED light source of the embodiment of the utility model are shown in Table 6 below:

[0058] .

[0059] As can be seen from Table 6 above, the S / P ratio (dark-light visual brightness ratio) of the rhythmically adjustable lighting LED light source of the embodiment of the utility model is higher than that of sunlight with the same color temperature of 5000K, which is conducive to relaxing the eyes, creating a comfortable and healthy light environment, and is conducive to the elderly seeing things clearly. The M / P ratio (non-photopic visual brightness ratio) is higher than that of sunlight with the same color temperature of 5000K, which is conducive to the elderly working, studying and reading. The red ratio is higher than that of sunlight, which is conducive to the consumption and release of energy ATP. From the perspective of crop utilization, it is conducive to the growth and development of plants, and is suitable for the elderly to grow flowers and plants and cultivate sentiments.

[0060] like Fig.17It can be seen that the rhythmically adjustable lighting LED light source of the embodiment of the utility model has the following characteristics: 1. The S / P ratio (dark-light visual brightness ratio) is higher than that of sunlight with the same color temperature of 5000K, which is conducive to relaxing the eyes' viewing angle, creating a comfortable and healthy light environment and allowing objects to be seen clearly and brightly; 2. The M / P ratio (non-photopic visual brightness ratio) is higher than that of sunlight with the same color temperature of 5000K, inhibiting the secretion of melatonin, making the elderly more energetic, and conducive to work, study and reading; 3. High SSI (380-780nm) spectral similarity, 100% restoration of natural light color, healthier and more ecological; 4. High TLCI-2012 parameters, the light is shone on books or fonts, the restoration is clearer, and the human body or equipment can be seen more clearly; 5. MDER, melanopsin equivalent daylight efficiency, is higher than that of sunlight with the same color temperature of 5000K, which is conducive to eye relaxation and clearer vision.

[0061] Further, see Fig.18 , test report of 5000K rhythmically adjustable lighting LED light source of the embodiment of the utility model.

[0062] The single cup dual-color dimming data of the rhythmically adjustable lighting LED light source of the embodiment of the utility model is as follows in Table 7:

[0063]

[0064] like Fig.19 The chromaticity and BIN drop point diagram of the rhythmically adjustable lighting LED light source provided by the embodiment of the utility model are shown, further combined with the following Table 8:

[0065] . According to Table 8, it can be seen that: 1. The color gamut area index GAI-BB relative to sunlight in the full color temperature range is >100, which meets the lighting chromaticity index requirements and the light color quality is very positive; 2. The color rendering index Ra>95, special color rendering index R9>80, R12>90 in the full color temperature range; 3. The TV lighting index TLCI-2012>99 in the full color temperature range; 4. The color quality index CQS>95 in the full color temperature range; 5. In the full color temperature range TM-30, Rg>98, Rf>95, Rf, skin>95.

[0066] Further combined with the following Table 9:

[0067] .

[0068] It can be seen that the rhythm-adjustable lighting LED light source provided by the embodiment of the utility model has the following advantages: 1. The S / P ratio of the full color temperature segment is higher than the parameter of sunlight with the same color temperature, which is conducive to relaxing the eyes, creating a comfortable and healthy light environment and seeing objects clearly and brightly; 2. The M / P ratio of the full color temperature segment is higher than the parameter of sunlight with the same color temperature, and the rhythm factor is adjustable. Low color temperature promotes melatonin secretion, which is helpful for the elderly to rest, and high color temperature inhibits melatonin secretion, which is helpful for the elderly to carry out daily activities and read books and newspapers; 3. 3300-5000K, COI (acid glycoside index) <3.3, meeting the medical light source standard; 4. The similarity between the full color temperature segment and the sunlight spectrum SSI (380-780nm)>85, SSI (430-690nm)>92, 100% restoration of natural light color, healthier and more ecological, and conducive to the protection of vision of the elderly; 5. The MDER of the full color temperature segment, the melanopsin equivalent daylight efficiency is higher than that of sunlight with the same color temperature, which is conducive to relaxing the eyes and providing a clearer field of vision.

[0069] The full color temperature spectrum of the rhythmically adjustable lighting LED light source f of the utility model is shown in Fig. 20 . Its full color temperature spectrum meets the following requirements: relative spectrum height 380-500nm<0.6, 700-780nm>0.2; peak wavelength is between 620-640nm and there are multiple peaks between 600-650nm. The adjustable color temperature is adjustable from 3000K-5000K, and the falling points are between the Duv=-0.003 curve and the Duv=+0.003 curve. The color is very positive, suitable for lighting sources, and more suitable for lighting for the elderly.

[0070] Further, see Figures 1-2 and 6, the plurality of LED chips include a first LED chip 191 with a main wavelength of 440-445nm, a second LED chip 192 with a main wavelength of 450-455nm, a third LED chip 193 with a main wavelength of 465-470nm, a fourth LED chip 194 with a peak wavelength of 407-413nm, and a fifth LED chip 195 with a peak wavelength of 475-485nm. The first LED chip 191, the second LED chip 192, the third LED chip 193, the fourth LED chip 194, and the fifth LED chip 195 are arranged in the warm white light functional area, and the first LED chip 191, the second LED chip 192, the third LED chip 193, the fourth LED chip 194, and the fifth LED chip 195 are arranged in the positive white light functional area. Specifically, see Figure 1, wherein the green LED chip is the first LED chip 191 , the blue LED chip is the second LED chip 192 , the orange LED chip is the third LED chip 193 , the black LED chip is the fourth LED chip 194 , and the purple LED chip is the fifth LED chip 195 .

[0071] Further, see Figure 8 , the bare crystal peak spectral energy ratio of the first LED chip 191, the second LED chip 192, the third LED chip 193, the fourth LED chip 194 and the fifth LED chip 195 is Фe (407-413nm): Фe (440-445nm): Фe (450-455nm): Фe (465-470nm): Фe (475-485nm) = (0.2-0.3): (0.8-1.0): (0.8-1.0): (0.6-0.9): (0.1-0.3). Among them, Фe (407-413nm): Фe (440-445nm): Фe (450-455nm): Фe (465-470nm): Фe (475-485nm) can be 0.2: 0.8: 0.8: 0.6: 0.1 or 0.3: 1.0: 1.0: 0.9: 0.3 or 0.25: 0.9: 0.9: 0.75: 0.2.

[0072] Further, the chip area ratio of the first LED chip 191, the second LED chip 192, the third LED chip 193, the fourth LED chip 194 and the fifth LED chip 195 is (0.8-1.0): (0.8-1.0): (0.8-1.0): (0.8-1.0). Specifically, the chip area ratio of the first LED chip 191, the second LED chip 192, the third LED chip 193, the fourth LED chip 194 and the fifth LED chip 195 can be 0.8: 0.9: 1.0: 0.8: 0.9 or 1.0: 0.8: 0.9: 1.0: 0.8 or 0.9: 1.0: 0.8: 0.9: 1.0.

[0073] Furthermore, the quantity ratio of the first LED chip 191 : the second LED chip 192 : the third LED chip 193 : the fourth LED chip 194 : the fifth LED chip 195 in the warm white light functional area is 3:3:3:1:1.

[0074] Furthermore, the quantity ratio of the first LED chip 191 : the second LED chip 192 : the third LED chip 193 : the fourth LED chip 194 : the fifth LED chip 195 arranged in the positive white light functional area is 3:3:3:1:1.

[0075] The present invention also provides a method for preparing a rhythmically adjustable LED lighting source, which comprises the following steps:

[0076] S100: multiple LED chips are placed in the bowl 10 on the bracket 7 according to the drawing requirements, and are fixed on the bracket 7 by a die bonding machine through insulating glue or silver glue. After the die bonding is completed, they are baked in an oven at a temperature of 150-160° C. for 2h±10min, so that each LED chip is completely fixed on the bracket 7;

[0077] S200: connecting each LED chip to the positive and negative electrodes of the bracket 7 by gold wire bonding using a gold wire bonding machine;

[0078] S300: prepare fluorescent powder and glue to form a first fluorescent glue solution, pour the first fluorescent glue solution into the glue barrel of the powder sprayer, and after the glue and bubbles are removed, spray the first fluorescent glue solution on each LED chip in the warm white light functional area according to the color parameter requirements. After spraying, bake at 160℃ / 0.5H;

[0079] S400: preparing a second fluorescent glue solution by mixing fluorescent powder and glue, pouring the second fluorescent glue solution into the glue barrel of the glue dispensing machine, dispensing the second fluorescent glue solution into the bowl 10 according to the color parameter requirements after the glue dispensing is completed, and baking at 80°C / 0.5H+160°C / 4H;

[0080] S500: After the baking is completed, threshing is performed, and the spectrometer is used to perform spectroscopic testing according to given color parameters to form a rhythmically adjustable lighting LED light source.

[0081] Further, in step S300, an isolation plate 20 (see Figure 7 ), the isolation plate 20 has opening positions 21 corresponding to the LED chips in the warm white light functional area, and the opening positions 21 are 3%-5% larger than the area of ​​the corresponding LED chips. The first fluorescent glue solution can be sprayed on the LED chips, and at the same time, the first fluorescent glue solution can be prevented from splashing to the LED chips in the positive white light functional area to prevent the risk of cross contamination.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rhythmically adjustable LED lighting source, characterized in that: It includes a bracket and a plurality of LED chips, wherein a bowl cup is arranged on the bracket, and the area of ​​the bracket located in the bowl cup is divided into a warm white light functional area and a positive white light functional area, and an equal number of the LED chips are distributed in the warm white light functional area and the positive white light functional area, and a first fluorescent glue layer is arranged on each of the LED chips located in the warm white light functional area, and the bowl cup is filled with a second fluorescent glue layer covering the first fluorescent glue layer and each of the LED chips in the positive white light functional area, and the first fluorescent glue layer is different from the second fluorescent glue layer.

2. The rhythmically adjustable LED lighting source according to claim 1, characterized in that: The multiple LED chips include a first LED chip with a main wavelength of 440-445nm, a second LED chip with a main wavelength of 450-455nm, a third LED chip with a main wavelength of 465-470nm, a fourth LED chip with a peak wavelength of 407-413nm and a fifth LED chip with a peak wavelength of 475-485nm. The warm white light functional area is provided with the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip, and the positive white light functional area is provided with the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip.

3. The rhythmically adjustable LED lighting source according to claim 2, characterized in that: The chip area ratio of the first LED chip, the second LED chip, the third LED chip, the fourth LED chip and the fifth LED chip is (0.8-1.0): (0.8-1.0): (0.8-1.0): (0.8-1.0).

4. The rhythmically adjustable LED lighting source according to claim 3, characterized in that: The warm white light functional area is provided with a quantity ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip of 3:3:3:1:

1.

5. The rhythmically adjustable LED lighting source according to claim 3, characterized in that: The quantity ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip arranged in the positive white light functional area is 3:3:3:1:1.

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