A quasi-natural light chip light source

Abstract

The present invention discloses a kind of quasi-natural light chip light source, which includes: an LED constant current driving chip, a first light emitting component, a second light emitting component, and a third light emitting component; the LED constant current driving chip is respectively connected to the first light emitting component, the second light emitting component, and the third light emitting component; the first light emitting component includes a silicon carbide-LED chip and yellow-green phosphor; the second light emitting component includes a 408nm-LED chip and cyan phosphor; the third light emitting component includes a gallium nitride-LED chip. The quasi-natural light chip light source of the present invention takes the natural light spectrum as a model, realizes the light source transformation of removing valleys and peaks and eliminating rich blue light, avoids the disadvantages that valley and peak light promotes myopia and rich blue light causes fundus damage, and causes less harm to health.

Description

Technical Field

[0001] The present invention relates to the field of lighting fixtures, and particularly to a quasi-natural light chip light source. Background Art

[0002] In a fluorescent lamp, the filament in the lamp tube discharges to make mercury vapor emit ultraviolet rays, which excite the phosphor fluorescent paint on the inner surface to release other visible lights with lower wavelengths. The color of the emitted light is controlled by the proportion of the phosphor components. The spectrum of the fluorescent lamp is a line spectrum distributed on a continuous spectrum; currently, most LED lamps are made by a blue light chip exciting one or more phosphors, and finally the light emitted by the blue light and the phosphors is mixed into white light. Therefore, generally, the spectrum of an LED will have more than two peaks, which is also a line spectrum and is distributed on a continuous spectrum with a relatively low radiation intensity; from the above, it can be seen that the spectra of both fluorescent lamps and LEDs have peak line spectra, which are different from the full spectra of sunlight and incandescent lamps. White LEDs are usually formed by two methods. The first is to use the "blue light technology" in combination with phosphors to form white light; the second is the method of mixing multiple monochromatic lights. Currently, common LED light sources start from the sensitivity of cone cells and ignore the sensitive chromatographic sections of the second vision and non-visual channels such as ipRGC, resulting in a trough in the 450-500 nm cyan light section, which is the most important (most stable) section in natural light. In addition, it mainly sets the excitation to a high peak blue light in the 420-450 nm section, forming a strong light suppression and further aggravating the relative lack state, forming an obvious valley-peak light. At the same time, the trough section is exactly the core information source of natural light and is also the spectral sensitive section of the second vision channel and non-visual channels, resulting in the non-visual pathway not being activated and the conduction being disordered, causing damage to light quality and health.

[0003] We found through animal experiments that both fluorescent lamps and natural white LED lamps can cause partial damage to the retinas of some animals, and can also induce the formation of myopia and partial hormone secretion disorders.

[0004] Therefore, a light source that is more similar to natural light and causes less damage to health is needed. Summary of the Invention

[0005] In order to overcome the above-mentioned drawbacks of the prior art, the purpose of the present invention is to provide a quasi-natural light chip light source, aiming to solve the problems that the current fluorescent lamps and natural white LED lamps are quite different from natural light sources and damage health.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A quasi-natural light chip light source, comprising: an LED constant current drive chip, a first light-emitting component, a second light-emitting component, and a third light-emitting component;

[0008] The LED constant current drive chip is respectively connected to the first light-emitting component, the second light-emitting component, and the third light-emitting component;

[0009] The first light-emitting component includes a silicon carbide-LED chip and yellow-green phosphor;

[0010] The second light-emitting component includes a 408nm-LED chip and cyan phosphor;

[0011] The third light-emitting component includes a gallium nitride-LED chip.

[0012] As an improved scheme, the silicon carbide-LED chip of the first light-emitting component emits blue light in the wavelength range of 450-500nm.

[0013] As an improved scheme, the light-emitting range of the yellow-green phosphor of the first light-emitting component is 500-700nm.

[0014] As an improved scheme, the yellow-green phosphor of the first light-emitting component includes gallium arsenide, gallium phosphide, and silicon carbide components.

[0015] As an improved scheme, the second light-emitting component emits blue light with a peak near 490nm in the wavelength range of 450-550nm

[0016] As an improved scheme, the material of the cyan phosphor of the second light-emitting component is Ca 2 YHf 2 Al 3 O 12 .

[0017] As an improved scheme, the gallium nitride-LED chip of the third light-emitting component emits blue light with a peak near 435nm in the wavelength range of 400-450nm.

[0018] As an improved scheme, the first light-emitting component, the second light-emitting component, and the third light-emitting component are connected in series or in parallel, and each group of the chip sets is composed of the first light-emitting component, the second light-emitting component, and the third light-emitting component connected in series or in parallel according to a set arrangement order;

[0019] The set arrangement order is the first light-emitting component - the second light-emitting component - the third light-emitting component;

[0020] Or, the set arrangement order is the first light-emitting component - the third light-emitting component - the second light-emitting component;

[0021] Or, the set arrangement order is the second light-emitting component - the first light-emitting component - the third light-emitting component;

[0022] Or, the set arrangement order is the second light-emitting component - the third light-emitting component - the first light-emitting component;

[0023] Alternatively, the set arrangement order is the third light-emitting component - the first light-emitting component - the second light-emitting component;

[0024] Alternatively, the set arrangement order is the third light-emitting component - the second light-emitting component - the first light-emitting component.

[0025] As an improved solution, a control module for distributing and controlling the current and voltage of the first light-emitting component, the second light-emitting component, and the third light-emitting component is provided inside the LED constant current driving chip.

[0026] As an improved solution, the control module controls the ratio adjustment of blue light and cyan light to be below 70% similar to natural light, and the color rendering index > 95%; it also controls the peak value of short-wave blue light to be less than 20% of the peak value of long-wave cyan light.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1) The natural light-like chip light source of the present invention takes the natural light spectrum at the spring equinox of N43°58′45.33″N, 119°22′58.38″E (Balin, Inner Mongolia) as a template, ensures the ratio of the cyan and blue light bands between 400 and 500, and the lamp core supplements the low valley in the section around 450 - 500 nm according to the natural light spectrum distribution, suppresses the excessive blue light in the range of 420 - 450 nm, the ratio is similar to natural light, and the color rendering index > 95%. According to the simulated natural light spectrum, the light source transformation of removing valleys and peaks and removing rich blue is realized, avoiding the disadvantages of valley peak light promoting myopia and rich blue causing fundus damage, and causing less harm to health.

[0029] 2) Utilizing the advantage of no ultraviolet rays of the original white LED, it avoids the defects of easy aging of devices such as fluorescent lamps and the harm of partial ultraviolet rays.

[0030] 3) Absorbing the advantage of no infrared rays of the original cold light source, it avoids the defects of high energy consumption and low efficiency of hot light sources, etc., and gives full play to the characteristics of high efficiency and energy saving of cold light sources.

[0031] 4) Filling the low gap in the "478" section of the original cold light source, avoiding the loss of the core information source of the second visual and non-visual channels, thereby overcoming the defects of the cold light source causing disorders in motion vision and non-visual pathway conduction, forming light-quality health damage, and affecting the eye orthotropia process during the window period, etc.

[0032] 5) The light constant current driving chip is connected to the silicon carbide chip, the 408 nm - LED chip, and the gallium nitride chip, used to drive the chip to emit light, stimulate the fluorescence layers of different materials and ratios specially formulated to emit light, and adjust and combine into three specifications of lighting light sources with simulated natural light spectra.

[0033] 6) The LED constant current drive chip is used to replace the previous device that uses 220V AC power through voltage transformation, rectification, and filtering as the working power supply, and it is stable, safe, energy-saving, and free of stroboscopic

[0034] 7) The SiC-LED chip + yellow-green phosphor is used as the main light source. The SiC junction is mainly used as the excitation light to make a variety of composite phosphors generate the main section spectrum, and the blue light section is suppressed with a high peak value to avoid excessive blue enrichment; the SiC junction is used to generate cyan light in the 450-500nm section near the peak light of 465 (λp = 465nm, Wd = 30nm). Gallium arsenide, gallium phosphide, silicon carbide, and other special phosphors are doped to make the LED emit light in the 500-700nm section, not only filling the trough in the cyan light area of ordinary LED white light, but also ensuring the existence of the core signal source and serving as the dominant light source.

[0035] 8) The GaN-LED chip is used to provide blue light in the 400-450nm section near the peak of 435nm, broadening the blue light spectrum and assisting in activating the emission of some yellow-green phosphors.

[0036] 9) The 408nm-LED chip + garnet structure phosphor is used to generate cyan light to ensure the supplement and strengthening of the "478" section; the 408nm-LED is used to excite the garnet structure cyan phosphor (Ca2YHf2Al3O12), emitting cyan light with a peak of 493nm and a bandwidth of 100nm to supplement the cyan light in the 450-550nm section, thus ensuring the reliability of the core signal source spectrum.

[0037] 10) The integrated module for the distribution and control of the current and voltage of each chip is combined in the LED constant current drive chip. By controlling the current and voltage of each chip, the intensity of some spectral sections is regulated to form the lighting source spectra required for different needs. In particular, the ratio of blue light to cyan light is adjusted to less than 70% similar to natural light, and the color rendering index > 95%. The transformation of white LED with valley peak removal and blue enrichment removal is realized. Through regulation, it is ensured that the peak value of short-wave blue light is less than 20% of the peak value of long-wave cyan light, avoiding the harm of blue enrichment. Description of the Drawings

[0038] Figure 1 For an embodiment, it is a schematic diagram of the comparison of natural light spectra;

[0039] Figure 2 For an embodiment, it is a schematic diagram of the natural light core signal source "478";

[0040] Figure 3 For an embodiment, it is a schematic diagram of the comparison of common light sources;

[0041] Figure 4 For a prior art, it is a low-deficiency schematic diagram of the cold light source "478";

[0042] Figure 5 In one embodiment, it is a schematic diagram of the experimental study on the transformation of the light source;

[0043] Figure 6 In one embodiment, it is a schematic diagram of the spectrum of a 6000K bright type light source in an excitation light environment;

[0044] Figure 7 In one embodiment, it is a schematic diagram of the spectrum of a 5000K gentle type light source in a stable light environment;

[0045] Figure 8 In one embodiment, it is a schematic diagram of the spectrum of a 4000K gentle type light source in a soothing light environment;

[0046] Figure 9 It is the natural spectrum at the spring equinox at N43°58′45.33″, E119°22′58.38″ (Balin, Inner Mongolia);

[0047] Figure 10 It is a ratio diagram of the short wavelength band and the long wavelength band between 400 and 500 of the natural spectrum at the spring equinox at N43°58′45.33″, E119°22′58.38″ (Balin, Inner Mongolia). Detailed implementation mode

[0048] The present invention will be further described below in conjunction with the drawings and embodiments:

[0049] Embodiment 1:

[0050] As shown in the attached Figures 1 - 10 figure, a kind of natural light-like chip light source includes: an LED constant current drive chip, a silicon carbide (SiC)-LED chip + yellow-green phosphor type chip, a 408nm - LED chip + garnet structure cyan phosphor (Ca2YHf2Al3O12), and a gallium nitride (GaN)-LED chip:

[0051] Among them, the LED constant current drive chip is connected to the SiC-LED chip, the 408nm - LED chip, and the GaN-LED chip, and is used to provide the electric energy for driving and supplying the light-emitting chip, and maintain the peak ratio of blue, blue-green light and red-yellow-green light through regulation;

[0052] The SiC-LED chip + yellow-green phosphor type chip is the main light source, mainly using the SiC junction as the excitation light to make the phosphor generate light in the 500 - 700nm section.

[0053] The GaN-LED chip provides blue light and provides auxiliary activation for the yellow-green phosphor to emit light.

[0054] The natural light-like chip light source provides three different light sources with K value specifications: bright type, gentle type, and soft type.

[0055] This light source absorbs the advantages of the continuous spectrum of natural light and thermal light sources, abandons ultraviolet light, part of infrared light, etc., and avoids the defects of easy aging and high energy consumption; it absorbs the advantages of high efficiency and energy saving of cold light sources and overcomes the hazards of peak-valley light and rich blue shift of commonly used cold light sources at present.

[0056] Drive and supply the light-emitting chip, and through regulation, keep the peak value of short-wave blue light less than the peak value of long-wave cyan light, and regulate the peak value ratio of blue, cyan, red, yellow, and green light to generate light sources with different color temperatures; convert 220V alternating current into constant current (low-voltage non-stroboscopic direct current) electricity to drive and supply the light-emitting chip. The light source will no longer use transformers, rectifiers, and filters. The constant current drive chip will directly convert 220V alternating current into the required low-voltage direct current, and abandon conventional capacitors and other filtering electrical appliances, making the power supply stroboscopic disappear; at the same time, due to the cancellation of power supply devices such as transformers, rectifiers, and filters, the safety is greatly increased, and due to the reduction of devices and links, the failure rate is also reduced, enhancing the reliability.

[0057] Generate cyan light in the 450-500nm section near the peak of 465nm with an SiC junction, and use this as the excitation light. Incorporate gallium arsenide, gallium phosphide, silicon carbide, and other special phosphors to make the LED emit light in the 500-700nm section, thus filling the valley in the cyan light area of ordinary LED white light and ensuring the existence and dominance of the core signal source.

[0058] Excite garnet structure (Ca2YHf2Al3O12, CYHAO) cyan phosphor and emit cyan light with a peak of 493nm and a bandwidth of 100nm to supplement the cyan light in the 450-550nm section.

[0059] Use a GaN-LED chip to provide short-wave blue light in the 400-450nm section near the peak of 435nm, broaden the blue light spectrum, and assist in activating the luminescence of some yellow-green phosphors. Under the regulation of the drive chip, ensure that the peak value of short-wave blue light is less than 20% of the peak value of long-wave cyan light to avoid the hazard of rich blue shift.

[0060] The three specifications of light sources include:

[0061] 1) 6000K bright type with an exciting and inspiring light environment,

[0062] 2) 5000K gentle type imitating the stretching and continuous light environment with a low red light section from 7:00 to 8:00,

[0063] 3) Combining the characteristics of thermal light sources, further suppressing blue light to form a 4000K soft type light source with a warm and soft light environment.

[0064] In summary, after reading the present invention document, those of ordinary skill in the art can make various other corresponding transformation schemes without creative mental labor according to the technical solutions and technical concepts of the present invention, and all of them fall within the scope protected by the present invention.

Claims

1. A quasi-natural light chip light source, characterized in that, it includes: an LED constant current drive chip, a first light-emitting component, a second light-emitting component, and a third light-emitting component; the LED constant current drive chip is respectively connected to the first light-emitting component, the second light-emitting component, and the third light-emitting component; the first light-emitting component includes a silicon carbide-LED chip and yellow-green phosphor; the second light-emitting component includes a 408nm - LED chip and cyan phosphor; the third light-emitting component includes a gallium nitride-LED chip.

2. The quasi-natural light chip light source according to claim 1, characterized in that, the silicon carbide-LED chip of the first light-emitting component emits blue light in the wavelength range of 450 - 500nm.

3. The quasi-natural light chip light source according to claim 2, characterized in that, the light-emitting range of the yellow-green phosphor of the first light-emitting component is 500 - 700nm.

4. The quasi-natural light chip light source according to claim 2, characterized in that, the yellow-green phosphor of the first light-emitting component includes gallium arsenide, gallium phosphide, and silicon carbide components.

5. The quasi-natural light chip light source according to claim 1, characterized in that, the second light-emitting component emits blue light with a peak near 490nm in the range of 450 - 550nm.

6. The quasi-natural light chip light source according to claim 5, characterized in that, the material of the cyan phosphor of the second light-emitting component is Ca2YHf2Al3O12.

7. The quasi-natural light chip light source according to claim 1, characterized in that, the gallium nitride-LED chip of the third light-emitting component emits blue light with a peak near 435nm in the range of 400 - 450nm.

8. The quasi-natural light chip light source according to claim 1, characterized in that, the first light-emitting component, the second light-emitting component, and the third light-emitting component are connected in series or in parallel, and each group of chips is composed of the first light-emitting component, the second light-emitting component, and the third light-emitting component connected in series or in parallel in a set arrangement order; the set arrangement order is the first light-emitting component - the second light-emitting component - the third light-emitting component; or, the set arrangement order is the first light-emitting component - the third light-emitting component - the second light-emitting component; or, the set arrangement order is the second light-emitting component - the first light-emitting component - the third light-emitting component; or, the set arrangement order is the second light-emitting component - the third light-emitting component - the first light-emitting component; or, the set arrangement order is the third light-emitting component - the first light-emitting component - the second light-emitting component; or, the set arrangement order is the third light-emitting component - the second light-emitting component - the first light-emitting component.

9. The quasi-natural light chip light source according to any one of claims 1 - 8, characterized in that, a control module for distributing and controlling the current and voltage of the first light-emitting component, the second light-emitting component, and the third light-emitting component is provided in the LED constant current drive chip.

10. The quasi-natural light chip light source according to claim 9, characterized in that, The control module controls the adjustment of the ratio of blue light to cyan light to be below 70% similar to natural light, and the color rendering index > 95%; it also controls the peak value of short-wave blue light to be less than 20% of the peak value of long-wave cyan light.

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