Blue and red light LED plant lamp based on ultraviolet chip excitation

Abstract

The utility model discloses a blue red light LED plant lamp based on ultraviolet chip excitation, include: ultraviolet chip, blue red light emitting layer and ultraviolet line absorption layer, and ultraviolet chip is equipped with the light emitting surface, blue red light emitting layer is attached to the light emitting surface, ultraviolet line absorption layer is attached to the outer surface of blue red light emitting layer, the utility model discloses with ultraviolet chip as excitation source, get blue light, red light double emission through exciting blue red light emitting layer, through ultraviolet line absorption layer absorption redundant ultraviolet simultaneously, do not influence blue red light emission intensity, prevent ultraviolet overflow simultaneously, and the luminous intensity is stronger, and it is wide spectrum, very tall plant growth's spectrum demand. The utility model relates to the technical field of plant lamp.

Description

Technical Field

[0001] This utility model relates to the technical field of plant lights, and in particular to a blue-red LED plant light based on ultraviolet chip excitation. Background Technology

[0002] The light required for plant photosynthesis is primarily blue light (400-500nm) and red light (610-720nm). Blue light is essential for plant photosynthesis, promoting leaf growth, protein synthesis, and fruit formation; red light promotes root and stem growth, aids in flowering and fruiting, and prolongs the flowering period. Practical market applications show that the combined enhancement of blue and red light can increase crop yield, advance fruit ripening and harvest time, increase fruit sweetness, and significantly reduce the occurrence of crop diseases and pests. In agricultural planting, LED plant growth lights are generally used. They are used for indoor plant lighting and can completely replace sunlight or supplement light when greenhouses are not well lit in winter, in order to ensure the normal photosynthetic needs of plants and improve crop quality. On the market, plant growth lights based on LED light sources generally use 450 or 460 nm LED blue light chips to excite red phosphors to obtain blue light with a main peak of 450 nm and red light with a peak of 630 nm. Their emission wavelengths are relatively narrow, especially in the blue light region where they can only achieve narrow-band emission, which does not quite match the spectrum required for plant photosynthesis. Utility Model Content The purpose of this invention is to provide a blue and red LED plant light based on ultraviolet chip excitation. The ultraviolet chip excitation produces both blue and red light emission, resulting in stronger luminous intensity and a wide spectrum, which perfectly meets the spectral requirements of plant growth.

[0003] The technical solution adopted to solve the above-mentioned technical problems is as follows: This utility model provides a blue-red LED plant light based on ultraviolet chip excitation, comprising: The ultraviolet chip has a light-emitting surface; A blue-red light-emitting layer is attached to the light-emitting surface; An ultraviolet absorption layer is attached to the outer surface of the blue-red light emitting layer.

[0004] The beneficial effects of this blue-red LED plant light are: In use, this invention uses an ultraviolet chip as an excitation source to excite the blue and red light emitting layer to obtain dual emission of blue and red light. At the same time, the ultraviolet absorption layer absorbs excess ultraviolet light, which does not affect the intensity of blue and red light emission and prevents ultraviolet light leakage. The light emission intensity is stronger and has a wide spectrum, which is very much in line with the spectral requirements of plant growth.

[0005] As a further improvement to the above technical solution, the blue-red light-emitting layer is a mixture of blue phosphor, red phosphor and the first cured body.

[0006] As a further improvement to the above technical solution, the first cured body is epoxy resin or silicone.

[0007] As a further improvement to the above technical solution, the luminescence intensity ratio of the blue phosphor and the red phosphor is (1-4):(3-9).

[0008] As a further improvement to the above technical solution, the blue phosphor is BaMgAl 10 O 17 Eu 2+ .

[0009] As a further improvement to the above technical solution, the red phosphor is MgAlSiN3:Eu 2+ CaAlSiN3:Eu 2 + SrAlSiN3:Eu 2+ BaAlSiN3:Eu 2+ Any one or combination of.

[0010] As a further improvement to the above technical solution, the emission wavelength of the ultraviolet chip is between 365nm and 405nm.

[0011] As a further improvement to the above technical solution, the ultraviolet chip has an emission wavelength greater than 380nm.

[0012] As a further improvement to the above technical solution, the ultraviolet absorption layer is a mixture of carbon quantum dots and a second cured body.

[0013] As a further improvement to the above technical solution, the second cured body is epoxy resin or silicone.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of one embodiment of the blue and red LED plant light provided by this utility model; Figure 2 This is the ultraviolet-visible spectrum of an embodiment of the carbon quantum dots provided by this utility model; Figure 3This is a luminescence spectrum diagram of an embodiment of the blue-red LED plant light provided by this utility model; Icon labels: UV chip 100; Blue and red light-emitting layer 200; blue phosphor 210; red phosphor 220; first cured body 230; Ultraviolet absorbing layer 300; carbon quantum dots 310; second cured body 320. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0021] The light required for plant photosynthesis is primarily blue light (400-500nm) and red light (610-720nm). Blue light is essential for plant photosynthesis, promoting leaf growth, protein synthesis, and fruit formation; red light promotes root and stem growth, aids in flowering and fruiting, and prolongs the flowering period. Practical market applications show that the combined enhancement of blue and red light can increase crop yield, advance fruit ripening and harvest time, increase fruit sweetness, and significantly reduce the occurrence of crop diseases and pests.

[0022] In agricultural planting, LED plant growth lights are generally used. They are used for indoor plant lighting and can completely replace sunlight or supplement light when greenhouses are dark in winter, so as to ensure the normal photosynthetic needs of plants and improve crop quality.

[0023] In the market, LED-based plant grow lights typically use a 450 or 460 nm blue LED chip to excite a red phosphor 220, producing blue light with a main peak of 450 nm and red light at 630 nm. This results in a relatively narrow emission wavelength, particularly in the blue light region, which only allows for narrow-band emission and doesn't perfectly match the spectrum required for plant photosynthesis. In contrast, LED lights using an ultraviolet chip 100 as the excitation source can achieve broadband dual emission of blue and red light, better matching the spectrum required for plant photosynthesis and providing stronger luminous intensity. However, due to ultraviolet leakage issues, they are rarely used in the field of plant grow lights.

[0024] Therefore, this utility model proposes a blue and red LED plant light based on ultraviolet chip 100 excitation. The ultraviolet chip 100 excitation produces both blue and red light emission, resulting in stronger luminous intensity and a wide spectrum, which is very much in line with the spectral requirements of plant growth.

[0025] like Figure 1 As shown, the blue-red LED plant light of this utility model includes: an ultraviolet chip 100, a blue-red light emitting layer 200, and an ultraviolet absorption layer 300.

[0026] In this invention, the ultraviolet chip 100 is an ultraviolet LED chip. The ultraviolet chip 100 has a light-emitting surface, which can be a planar surface, a concave surface, a convex surface, etc. In this embodiment, the light-emitting surface is a planar structure.

[0027] The blue-red light emitting layer 200 is attached to the light emitting surface, and the ultraviolet absorption layer 300 is attached to the outer surface of the blue-red light emitting layer 200. The light emitted by the ultraviolet chip 100 passes through the blue-red light emitting layer 200 and the ultraviolet absorption layer 300 in sequence, wherein the ultraviolet absorption layer 300 is used to absorb ultraviolet light.

[0028] In this embodiment, the ultraviolet chip 100 is used as the excitation source to excite the blue and red light emitting layer 200 to achieve dual emission of blue and red light. Simultaneously, the ultraviolet absorption layer 300 absorbs excess ultraviolet light, preventing ultraviolet light leakage without affecting the blue and red light emission intensity, resulting in stronger luminescence intensity and a broad spectrum. Figure 3The light spectrum of the blue and red LED plant light shown perfectly matches the spectral requirements of plant growth. When used in combination with sunlight, it can significantly increase the proportion of red and blue light in the light. In addition to promoting the production of chlorophyll, anthocyanins, and carotene needed for plant photosynthesis, allowing fruits and vegetables to be harvested 20% earlier, increasing yield by 30% to 50%, and improving the sweetness of fruits and vegetables, it also significantly reduces crop diseases and pests, resulting in healthier plant growth.

[0029] In this embodiment, the blue-red light-emitting layer 200 is a mixture of blue phosphor 210, red phosphor 220 and first cured body 230. The first cured body 230 is epoxy resin or silicone. The blue-red light-emitting layer 200 in this embodiment is formed by uniformly mixing blue phosphor 210, red phosphor 220 and epoxy resin and then curing it.

[0030] In this embodiment, the luminous intensity ratio of the blue phosphor 210 and the red phosphor 220 is (1-4):(3-9).

[0031] And the blue phosphor 210 in this embodiment is BaMgAl 10 O 17 Eu 2+ BaMgAl 10 O 17 Eu 2+ The blue phosphor 210 is a commercially available blue phosphor, while the red phosphor 220 is MgAlSiN3:Eu. 2+ CaAlSiN3:Eu 2+ SrAlSiN3:Eu 2+ BaAlSiN3:Eu 2+ Any one or combination of.

[0032] The emission wavelength of the ultraviolet chip 100 in this embodiment is between 365nm and 405nm. Preferably, the emission wavelength of the ultraviolet chip 100 is greater than 380nm.

[0033] In this embodiment, the ultraviolet absorbing layer 300 is a mixture of carbon quantum dots 310 and a second cured body 320, wherein the second cured body 320 is epoxy resin or silicone. In this embodiment, the ultraviolet absorbing layer 300 is formed by uniformly mixing carbon quantum dots 310 and epoxy resin, and then coating and curing it.

[0034] Carbon quantum dots 310 are inexpensive, non-toxic (environmentally friendly), and possess excellent optical properties. They completely absorb ultraviolet light while having almost no impact on the transmission of visible light, making them very suitable for use as ultraviolet absorbers in light sources. Figure 2 The UV-Vis spectrum of carbon quantum dot 310 is shown.

[0035] The manufacturing process of this utility model's blue and red LED plant light: Weigh out a certain amount of blue phosphor 210 and red phosphor 220. Blue phosphor 210 refers to commercially available BaMgAl. 10 O 17 Eu 2+ Blue phosphor 210 and red phosphor 220 refer to nitride red phosphor MgAlSiN3:Eu 2+ CaAlSiN3:Eu 2 + SrAlSiN3:Eu 2+ BaAlSiN3:Eu 2+ Any one or combination of these. The ratio of their luminous intensity is set to (1-4):(3-9), then mixed and dispersed evenly with an appropriate amount of epoxy resin or silicone, encapsulated on the UV chip 100, and cured. A certain amount of carbon quantum dots 310 is weighed and mixed evenly with an appropriate amount of epoxy resin or silicone. The mixture is then uniformly coated onto the surface of the blue-red luminescent layer. After curing, a blue-red LED plant light is obtained. The amount of carbon quantum dots 310 is determined by testing the fluorescence spectrum to ensure that no ultraviolet light leakage is detected.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A blue-red LED plant light based on ultraviolet chip excitation, characterized in that, include: The ultraviolet chip (100) has a light-emitting surface; A blue-red light-emitting layer (200) is attached to the light-emitting surface; An ultraviolet absorption layer (300) is attached to the outer surface of the blue-red light emitting layer (200).

2. The blue-red LED plant light according to claim 1, characterized in that: The ultraviolet chip (100) emits light at a wavelength between 365 nm and 405 nm.

3. The blue-red LED plant light according to claim 2, characterized in that: The ultraviolet chip (100) emits light at a wavelength greater than 380 nm.

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