Light-emitting device simulating moonlight

Abstract

The invention relates to the field of lighting devices, and particularly discloses a moonlight-simulating light-emitting device which comprises a green light unit and a fluorescent glue layer, and the green light unit is used for emitting green light; the fluorescent glue layer wraps the green light unit, so that green light emitted by the green light unit is converted into irradiation light simulating moonlight; the irradiation light comprises light of a first wave band, light of a second wave band and light of a third wave band; the wavelength range of the light of the first wave band is 350 nm to 480 nm, the wavelength range of the light of the second wave band is 481 nm to 780 nm, and the wavelength range of the light of the third wave band is 781 nm to 1000 nm; in the irradiation light, the proportion of the light of the first wave band is smaller than or equal to 2%, and the proportion of the light of the third wave band is larger than or equal to 10%. Irradiation light emitted by the light-emitting device can simulate a moonlight spectrum, and the effects of helping sleep, soothing the nerves and accelerating metabolism are achieved.

Description

Technical Field

[0001] The invention relates to the field of lighting devices, and in particular to a light-emitting device for simulating moonlight. Background Art

[0002] Studies have shown that the impact of moonlight on human health cannot be ignored. Although the moon itself does not emit light, but forms moonlight by reflecting sunlight, its spectral characteristics have a subtle effect on human physiological and psychological state. In the solar spectrum, yellow light and red light have strong penetrating power, while purple light and blue light are more absorbed by the moon when passing through the atmosphere. The moonlight that finally reaches the ground has no obvious harm to the human body. The brightness of moonlight may still interfere with the body's biological clock. Studies have shown that the light intensity of moonlight can affect the secretion of melatonin. When the intensity of moonlight is strong, it will reduce the secretion of melatonin and reduce sleep quality. When the moonlight is soft, it can effectively improve sleep quality.

[0003] On the other hand, current lighting products based on LED light sources mostly use blue light chips or purple light chips plus phosphors to achieve lighting. Blue light and purple light will greatly affect the secretion of melatonin, affect the human body's biological clock, and are harmful to the eyes. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a light-emitting device for simulating moonlight, which can simulate moonlight and play the role of helping sleep, calming the mind and accelerating metabolism.

[0005] In order to solve the technical problem of the present invention, the present invention provides a light-emitting device for simulating moonlight, which comprises:

[0006] a green light unit for emitting green light; and

[0007] A fluorescent adhesive layer, wherein the fluorescent adhesive layer wraps the green light unit so as to convert the green light emitted by the green light unit into illuminating light simulating moonlight;

[0008] The irradiation light includes light of a first wavelength band, light of a second wavelength band, and light of a third wavelength band; the wavelength range of the light of the first wavelength band is 350nm to 480nm, the wavelength range of the light of the second wavelength band is 481nm to 780nm, and the wavelength range of the light of the third wavelength band is 781nm to 1000nm;

[0009] In the irradiation light, the proportion of the light in the first wavelength band is ≤2%, and the proportion of the light in the third wavelength band is ≥10%.

[0010] As an improvement of the above technical solution, in the irradiated light, the light in the first wavelength band accounts for 0.2% to 1.8%, the light in the second wavelength band accounts for 75% to 87%, and the light in the third wavelength band accounts for 13% to 25%.

[0011] As an improvement of the above technical solution, in the irradiation light, the proportion of the light in the first band is 1.0% - 1.8%, the proportion of the light in the second band is 76% - 82%, and the proportion of the light in the third band is 17% - 23%.

[0012] As an improvement of the above technical solution, in the irradiation light, the proportion of the light in the first band is 1.52%, the proportion of the light in the second band is 78.06%, and the proportion of the light in the third band is 20.32%.

[0013] As an improvement of the above technical solution, the peak wavelength of the green light emitted by the green light unit is 510 nm - 530 nm, and the color temperature is 2500 K - 2700 K.

[0014] As an improvement of the above technical solution, the peak wavelength of the green light emitted by the green light unit is 520 nm - 525 nm, and the color temperature is 2550 K - 2650 K.

[0015] As an improvement of the above technical solution, the fluorescent glue layer is made of fluorescent glue, and the fluorescent glue includes encapsulating glue, first phosphor, second phosphor, third phosphor, fourth phosphor and fifth phosphor;

[0016] The peak wavelengths of the first phosphor, the second phosphor, and the third phosphor after excitation are in the range of 610 nm - 750 nm; and the peak wavelength of the first phosphor after excitation < the peak wavelength of the second phosphor after excitation < the peak wavelength of the third phosphor after excitation;

[0017] The peak wavelengths of the fourth phosphor and the fifth phosphor after excitation are in the range of 750 nm - 900 nm; and the peak wavelength of the fourth phosphor after excitation < the peak wavelength of the fifth phosphor after excitation.

[0018] As an improvement of the above technical solution, the peak wavelength of the first phosphor after excitation is 610 nm - 630 nm, the peak wavelength of the second phosphor after excitation is 635 nm - 660 nm, the peak wavelength of the third phosphor after excitation is 710 nm - 730 nm, the peak wavelength of the fourth phosphor after excitation is 760 nm - 800 nm, and the peak wavelength of the fifth phosphor after excitation is 800 nm - 850 nm.

[0019] As an improvement of the above technical solution, in the fluorescent glue, the content of the first phosphor is 5wt% - 10wt%, the content of the second phosphor is 20wt% - 30wt%, the content of the third phosphor is 10wt% - 15wt%, the content of the fourth phosphor is 15wt% - 20wt%, and the content of the fifth phosphor is 5wt% - 10wt%.

[0020] As an improvement of the above technical solution, the color temperature of the irradiation light is 1700K - 2200K, and its M / P value is 0.18 - 0.35.

[0021] Implementing the present invention has the following beneficial effects:

[0022] In the moonlight-simulating light-emitting device in an embodiment of the present invention, it includes a green light unit and a fluorescent glue layer. The irradiation light emitted by this light-emitting device includes light in a first band, light in a second band, and light in a third band; the wavelength range of the light in the first band is 350nm - 480nm, the wavelength range of the light in the second band is 481nm - 780nm, and the wavelength range of the light in the third band is 781nm - 1000nm; in this irradiation light, the proportion of the light in the first band is ≤2%, and the proportion of the light in the third band is ≥10%. Based on the above irradiation light, it can soothe the nerves, improve the sleep quality, and can also activate cell self-repair, accelerate metabolism, and enhance the body's resistance. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the system composition of the moonlight-simulating light-emitting device in an embodiment of the present invention;

[0024] Figure 2 It is the spectrogram of the light-emitting device in Embodiment 1 of the present invention. Detailed Embodiments

[0025] To facilitate the understanding of the present invention, the present invention will be described in more detail below. However, it should be understood that the present invention can be implemented in many different forms and is not limited to the embodiments or examples described herein. On the contrary, the purpose of providing these embodiments or examples is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments or examples only and are not intended to limit the present invention. The optional scope of the term "and / or" used herein includes any one of two or more related listed items, and also includes any and all combinations of the related listed items, and the any and all combinations include combinations of any two related listed items, any more than two related listed items, or all related listed items.

[0027] Reference Figure 1 , the present invention provides a light-emitting device for simulating moonlight, which includes a green light unit 11 and a fluorescent glue layer 12. Among them, the green light unit 11 is used to emit green light, and the fluorescent glue layer 12 wraps the green light unit 11 to convert the green light emitted by the green light unit 11 into the illumination light for simulating moonlight. Preferably, in some embodiments, the light-emitting device for simulating moonlight further includes a substrate 2. The substrate 2 can be a light source board, but is not limited thereto. The green light unit 11 is disposed on the substrate 2. The green light unit 11 can be one or more, and the number and distribution of the green light units 11 can be adjusted as needed to optimize the effect of simulating moonlight. The fluorescent glue layer 12 is obtained by curing fluorescent glue, and the fluorescent glue is composed of an encapsulating glue and a phosphor. The ratio of the encapsulating glue to the phosphor can be adjusted according to requirements to ensure that the light emitted by the green light unit 11 meets the requirements of simulating moonlight after passing through the fluorescent glue layer 12.

[0028] Specifically, the green light unit 11 can adopt an LED or an OLED, but is not limited thereto. Preferably, the green light unit 11 is a green LED, which is simple to arrange and easy to control. The green light unit 11 can be an independent light source structure or combined in one or more light source structures.

[0029] Specifically, the illumination light emitted by the above light-emitting device includes light of at least three bands, namely light of the first band, light of the second band, and light of the third band; the wavelength range of the light of the first band is 350 nm to 480 nm, the wavelength range of the light of the second band is 481 nm to 780 nm, and the wavelength range of the light of the third band is 781 nm to 1000 nm; and in the illumination light, the proportion of the light of the first band ≤ 2%, and the proportion of the light of the third band ≥ 10%. Based on the above illumination light, it can soothe the nerves, improve the sleep quality, and can also activate cell self-repair, accelerate metabolism, and enhance the body's resistance.

[0030] Specifically, in the irradiated light, the proportion of light in the first band is 0.1% to 1.9%, exemplarily 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6% or 1.8%, but not limited thereto. Preferably, the proportion of light in the first band is 0.2% to 1.8%, more preferably 1.0% to 1.8%, and more preferably 1.52%.

[0031] Specifically, in the irradiated light, the proportion of light in the second band is 70% to 87%, exemplarily 71%, 73%, 75%, 77%, 79%, 81%, 83% or 85%, but not limited thereto. Preferably it is 75% to 87%, more preferably 76% to 82%, and more preferably 78.06%.

[0032] Specifically, in the irradiated light, the proportion of light in the third band is 12% to 29%, exemplarily 13%, 15%, 17%, 19%, 21%, 23%, 25% or 27%, but not limited thereto. Preferably it is 13% to 25%, more preferably 17% to 23%, and more preferably 20.32%.

[0033] Specifically, the color temperature of the green light emitted by the green light unit 11 is 2500K to 3000K, exemplarily 2550K, 2650K, 2750K, 2800K or 2900K, but not limited thereto. Preferably it is 2500K to 2700K, more preferably 2550K to 2650K, and more preferably 2670K.

[0034] Specifically, the peak wavelength of the green light emitted by the green light unit 11 is 500nm to 540nm, exemplarily 505nm, 515nm, 520nm, 525nm, 530nm or 535nm, but not limited thereto. Preferably, the peak wavelength of the green light emitted by the green light unit 11 is 510nm to 530nm, more preferably 520 to 525nm. More preferably it is 520nm.

[0035] Preferably, in some embodiments, the fluorescent glue includes encapsulating glue, first phosphor, second phosphor, third phosphor, fourth phosphor and fifth phosphor; the peak wavelengths after excitation of the first phosphor, second phosphor and third phosphor are in the range of 610nm to 750nm; and the peak wavelength after excitation of the first phosphor < the peak wavelength after excitation of the second phosphor < the peak wavelength after excitation of the third phosphor; the peak wavelengths after excitation of the fourth phosphor and fifth phosphor are in the range of 750nm to 900nm; and the peak wavelength after excitation of the fourth phosphor < the peak wavelength after excitation of the fifth phosphor.

[0036] Specifically, the peak wavelength after excitation of the first phosphor is 600 nm to 630 nm, and exemplarily, it is 605 nm, 610 nm, 615 nm, 620 nm or 625 nm, but not limited thereto. Preferably, it is 610 nm to 630 nm, and more preferably, it is 620 nm.

[0037] Specifically, the peak wavelength after excitation of the second phosphor is 630 nm to 660 nm, and exemplarily, it is 635 nm, 640 nm, 645 nm, 650 nm or 655 nm, but not limited thereto. Preferably, it is 635 nm to 660 nm, and more preferably, it is 640 nm.

[0038] Specifically, the peak wavelength after excitation of the third phosphor is 700 nm to 730 nm, and exemplarily, it is 705 nm, 710 nm, 715 nm, 720 nm or 725 nm, but not limited thereto. Preferably, it is 710 nm to 730 nm, and more preferably, it is 720 nm.

[0039] Specifically, the peak wavelength after excitation of the fourth phosphor is 750 nm to 800 nm, and exemplarily, it is 760 nm, 770 nm, 780 nm or 790 nm, but not limited thereto. Preferably, it is 760 nm to 800 nm, and more preferably, it is 780 nm.

[0040] Specifically, the peak wavelength after excitation of the fifth phosphor is 800 nm to 860 nm, and exemplarily, it is 810 nm, 820 nm, 830 nm, 840 nm or 850 nm, but not limited thereto. Preferably, it is 800 nm to 850 nm, and more preferably, it is 830 nm.

[0041] Specifically, in the fluorescent glue, the content of the first phosphor is 3 wt% to 10 wt%, and exemplarily, it is 3.5 wt%, 5 wt%, 6.5 wt%, 8 wt% or 9.5 wt%, but not limited thereto. Preferably, it is 5 to 10 wt%, and more preferably, it is 7.66 wt%.

[0042] Specifically, in the fluorescent glue, the content of the second phosphor is 18 wt% to 30 wt%, and exemplarily, it is 19.5 wt%, 21 wt%, 22.5 wt%, 24 wt%, 25.5 wt%, 27 wt% or 28.5 wt%, but not limited thereto. Preferably, it is 20 wt% to 30 wt%, and more preferably, it is 25.66 wt%.

[0043] Specifically, in the fluorescent glue, the content of the third phosphor is 10 wt% to 20 wt%, and exemplarily, it is 12 wt%, 14 wt%, 16 wt% or 18 wt%, but not limited thereto. Preferably, it is 10 wt% to 15 wt%, and more preferably, it is 12.24 wt%.

[0044] Specifically, in the fluorescent glue, the content of the fourth phosphor is 15 wt% to 25 wt%, exemplarily 16 wt%, 18 wt%, 20 wt%, 22 wt% or 24 wt%, but not limited thereto. Preferably, it is 15 wt% to 20 wt%, and more preferably 18.85 wt%.

[0045] Specifically, in the fluorescent glue, the content of the fifth phosphor is 5 wt% to 15 wt%, exemplarily 5.5 wt%, 7 wt%, 8.5 wt%, 10 wt%, 11.5 wt% or 13.5 wt%, but not limited thereto. Preferably, it is 5 wt% to 10 wt%, and more preferably 8.1 wt%.

[0046] Specifically, based on the above-mentioned light-emitting device, the emitted irradiation light has a color temperature of 1700K to 2200, an M / P value of 0.3 to 0.35, and a color rendering index R a ≥78.0, and its specific spectrum is as Figure 2 shown.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification. The above-described embodiments only represent several implementation manners of the present invention, which are convenient for understanding the technical solutions of the present invention specifically and in detail, but should not be construed as a limitation on the protection scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

[0048] It should be understood that the technical solutions obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided by the present invention are all within the protection scope of the appended claims of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the content of the appended claims, and the description and drawings can be used to explain the content of the claims.

Claims

1. A light-emitting device for simulating moonlight, characterized in that: include: a green light unit for emitting green light; and A fluorescent adhesive layer, wherein the fluorescent adhesive layer wraps the green light unit so as to convert the green light emitted by the green light unit into illuminating light simulating moonlight; The irradiation light includes light of a first wavelength band, light of a second wavelength band, and light of a third wavelength band; the wavelength range of the light of the first wavelength band is 350nm to 480nm, the wavelength range of the light of the second wavelength band is 481nm to 780nm, and the wavelength range of the light of the third wavelength band is 781nm to 1000nm; In the irradiation light, the proportion of the light in the first wavelength band is ≤2%, and the proportion of the light in the third wavelength band is ≥10%.

2. The moonlight simulating lighting device according to claim 1, characterized in that: In the irradiation light, the light in the first wavelength band accounts for 0.2% to 1.8%, the light in the second wavelength band accounts for 75% to 87%, and the light in the third wavelength band accounts for 13% to 25%.

3. The moonlight simulating lighting device according to claim 1, characterized in that: In the irradiation light, the light in the first wavelength band accounts for 1.0% to 1.8%, the light in the second wavelength band accounts for 76% to 82%, and the light in the third wavelength band accounts for 17% to 23%.

4. The moonlight simulating lighting device according to claim 1, characterized in that: In the irradiated light, the light in the first wavelength band accounts for 1.52%, the light in the second wavelength band accounts for 78.06%, and the light in the third wavelength band accounts for 20.32%.

5. The moonlight simulating lighting device according to claim 1, characterized in that: The peak wavelength of the green light emitted by the green light unit is 510nm-530nm, and the color temperature is 2500K-2700K.

6. The moonlight simulating lighting device according to claim 1, characterized in that: The peak wavelength of the green light emitted by the green light unit is 520nm-525nm, and the color temperature is 2550K-2650K.

7. The moonlight simulating lighting device according to claim 1, characterized in that: The fluorescent glue layer is made of fluorescent glue, and the fluorescent glue includes packaging glue, a first fluorescent powder, a second fluorescent powder, a third fluorescent powder, a fourth fluorescent powder and a fifth fluorescent powder; The peak wavelengths of the first phosphor, the second phosphor, and the third phosphor after being excited are within the range of 610 nm to 750 nm; and the peak wavelength of the first phosphor after being excited is less than the peak wavelength of the second phosphor after being excited and less than the peak wavelength of the third phosphor after being excited; The peak wavelengths of the fourth phosphor and the fifth phosphor after being excited are within the range of 750nm to 900nm; and the peak wavelength of the fourth phosphor after being excited is less than the peak wavelength of the fifth phosphor after being excited.

8. The moonlight simulating lighting device according to claim 7, characterized in that: The peak wavelength of the first phosphor after excitation is 610nm~630nm, the peak wavelength of the second phosphor after excitation is 635nm~660nm, the peak wavelength of the third phosphor after excitation is 710nm~730nm, the peak wavelength of the fourth phosphor after excitation is 760nm~800nm, and the peak wavelength of the fifth phosphor after excitation is 800nm~850nm.

9. The moonlight simulating lighting device according to claim 7, characterized in that: In the fluorescent glue, the content of the first fluorescent powder is 5wt%-10wt%, the content of the second fluorescent powder is 20wt%-30wt%, the content of the third fluorescent powder is 10wt%-15wt%, the content of the fourth fluorescent powder is 15wt%-20wt%, and the content of the fifth fluorescent powder is 5wt%-10wt%.

10. The moonlight simulating lighting device according to claim 1, characterized in that: The color temperature of the irradiation light is 1700K-2200K, and the M / P value thereof is 0.3-0.35.

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