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LED lamp beads for plant cultivation

A technology of LED lamp beads and LED chips, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of unevenly distributed colored light spots of mixed light, poor photosynthesis matching, large probability and area ratio, etc. Effects of nutrition and reproductive growth, increasing sugar content, and increasing vegetable yield

Active Publication Date: 2020-03-31
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in use, after the phosphor mixture is coated, the mixed light emitted by it is poorly matched with the photosynthesis of plants, and the photon utilization efficiency is low, and the light of a single or several colors often appears in the mixed light obtained. Bright or too dark, resulting in uneven distribution of colored spots in the resulting mixed light, and the overall tone is inconsistent, especially when more types of phosphors are selected, the probability and area ratio of the spots are greater

Method used

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  • LED lamp beads for plant cultivation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An LED lamp bead for plant cultivation, including a blue LED chip, an adhesive, a phosphor, a metal wire and a lens; the emission wavelength of the blue LED chip is 420-480nm, and the surface of the blue LED chip is coated with fluorescent light through the action of the adhesive powder; the phosphor is YAG:Ce 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Three kinds of mixtures, and the amounts of the three are configured according to the mass ratio of 0.45:0.15:0.2, wherein each phosphor YAG:Ce in 1 total weight unit 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Medium, Ce 3+ , Mn 4+ 、Eu 2+ The mass ratios of doping in the corresponding phosphor powder are 0.06, 0.04, and 0.005 respectively; the binder is silicone resin, and the amount of the mixture of binder and phosphor powder is configured in a ratio of 0.9:0.1 by weight. .

[0016] Wherein, the spectrogram of the phosphor powder mixture prepared in this example is specifically as attached figure 1 shown. The re...

Embodiment 2

[0018] An LED lamp bead for plant cultivation, including a blue LED chip, an adhesive, a phosphor, a metal wire and a lens; the emission wavelength of the blue LED chip is 420-480nm, and the surface of the blue LED chip is coated with fluorescent light through the action of the adhesive powder; the phosphor is YAG:Ce 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Three kinds of mixtures, and the amounts of the three are configured according to the mass ratio of 0.1:0.65:0.35, wherein each phosphor YAG:Ce in 1 total weight unit 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Medium, Ce 3+ , Mn 4+ 、Eu 2+ The mass ratios of doping in the corresponding phosphors are 0.10, 0.07, and 0.005 respectively; the adhesive is Dow Corning 6551AB glue, and the amount of the phosphor mixture and the AB glue is 3:2.5 by weight. proportional configuration.

[0019] The mixed light obtained in this example is soft water-red light, and the irradiation effect is uniform without colored spots visible ...

Embodiment 3

[0021] An LED lamp bead for plant cultivation, including a blue LED chip, an adhesive, a phosphor, a metal wire and a lens; the emission wavelength of the blue LED chip is 420-480nm, and the surface of the blue LED chip is coated with fluorescent light through the action of the adhesive powder; the phosphor is YAG:Ce 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Three kinds of mixtures, and the amounts of the three are configured according to the mass ratio of 0.2:0.5:0.5, wherein each phosphor YAG:Ce in 1 total weight unit 3+ 、K 2 TiF 6 :Mn 4+ 、CaAlSiN 3 :Eu 2+ Medium, Ce 3+ , Mn 4+ 、Eu 2+ The mass ratios of each doped in the corresponding phosphor powder are 0.07, 0.07, 0.005; the adhesive is Dow Corning 6551AB glue, and the amount of the phosphor mixture and the AB glue is 3:2.7 by weight. proportional configuration.

[0022] The mixed light obtained in this example is soft water-red light, and the irradiation effect is uniform without colored spots visible to the na...

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Abstract

The invention relates to an LED lamp bead for plant culture. The LED lamp bead comprises a blue light LED chip, an adhesive, fluorescent powder, a metal wire and a lens, wherein the surface of the blue light LED chip is coated with the fluorescent powder through the action of the adhesive, and the fluorescent powder is a mixture of YAG:Ce<3+>, K2TiF6:Mn<4+> and CaAlSiN3:Eu<2+> or a mixture of K2TiF6:Mn<4+> and CaAlSiN3:Eu<2+>. The lamp bead provided by the invention has a good supplementary lighting effect when being used for plant culture and is suitable for photosynthesis of plants, therebyimproving the plant photon utilization efficiency and promoting the plant growth.

Description

technical field [0001] The invention relates to the field of plant cultivation, in particular to an LED lamp bead for plant cultivation. Background technique [0002] At present, plant cultivation mainly uses LED lamp beads emitting red and blue composite light for supplementary lighting. The conventional structure of its LED lamp beads includes a blue LED chip, an adhesive, a red phosphor, a plastic shell and a metal wire; wherein, the surface of the blue LED chip is coated with a red phosphor through the action of the adhesive, and its two ends are respectively After the metal wire is connected and its surface is covered with a plastic shell, it is formed. In addition, in the prior art, the surface of the blue LED chip is often coated with phosphor powder mixtures of various colors. However, in use, after the phosphor mixture is coated, the mixed light emitted by it is poorly matched with the photosynthesis of plants, and the photon utilization efficiency is low, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/48H01L33/50
CPCH01L33/48H01L33/502
Inventor 韩涛曹仕秀彭玲玲赵聪
Owner CHONGQING UNIV OF ARTS & SCI