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Fluorescent powder conversion type filament lamp for plant growth

A plant growth and fluorescent powder technology, applied in the field of plant lighting, can solve the problems of poor thermal stability of light sources, high cost, single irradiation angle, etc.

Inactive Publication Date: 2018-11-02
DALIAN LED LIGHTING R&D CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantages are that the emission spectrum band is narrow, and the existing red phosphors suitable for blue light chip excitation have low luminous efficiency and poor stability, and it is difficult to be widely used in the field of high color rendering and high efficiency plant growth LED lights.
[0017] Therefore, there are still many defects in the currently widely used plant lighting sources (such as uneven light mixing, poor thermal stability of the light source, single irradiation angle, high cost, etc.), and there are still problems with stable lighting source properties, simplified packaging technology, and low cost. Demand for plant LED lighting sources, etc.

Method used

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  • Fluorescent powder conversion type filament lamp for plant growth
  • Fluorescent powder conversion type filament lamp for plant growth
  • Fluorescent powder conversion type filament lamp for plant growth

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Each of the above-mentioned fluorescent materials was tested for each optical characteristic parameter, and the data obtained from the test are shown in Table 1 and Table 2.

[0109] Table 1. Optical characteristic parameters of nitride red fluorescent materials

[0110]

[0111] Table 2. Optical characteristic parameters of yellow-green fluorescent materials

[0112]

Embodiment 2

[0114] The light-emitting diode filament in the filament lamp for plant growth prepared in this embodiment includes an AlN substrate I, and a plurality of blue light chips II arranged on the AlN substrate I, the wavelength of the blue light chip II is 460nm; the molecular formula is (Ca 0.88 , Eu 0.12 ) 1.0525 Al 0.1 Si 2.2 N 3.7262 f 0.0264 The nitride red fluorescent material is mixed with silica gel according to the ratio of fluorescent material: silica gel = 4:1, and then covered on the blue chip II.

[0115] After testing, the emission spectrum of the obtained filament lamp for plant growth is as follows: Figure 4 Shown by the solid line a.

[0116] Depend on Figure 4 It can be seen that the emission spectrum of the filament lamp in this embodiment covers a wide band of 600nm to 800nm, the emission peak is located near 652nm, the half-peak width is 119.8nm, the luminous flux is as high as 244.5lm, and the corresponding color temperature (Tc) is about 1350K. The ...

Embodiment 3

[0119] The light-emitting diode filament in the filament lamp for plant growth prepared in this embodiment includes an AlN substrate I, and a plurality of blue light chips II arranged on the AlN substrate I, the wavelength of the blue light chip II is 460nm; the molecular formula is (Sr 0.85 , Eu 0.15 ) 1.0525 Al 0.1 Si 2.2 N 3.7262 f 0.0264 The nitride red fluorescent material is mixed with silica gel according to the ratio of fluorescent material: silica gel = 3.5:1, and then covered on the blue chip II.

[0120] After testing, the emission spectrum of the obtained filament lamp for plant growth is as follows: Figure 4 Shown by the dotted line b.

[0121] Depend on Figure 4 It can be seen that the emission spectrum of the filament lamp in this embodiment covers a wide band of 600nm-820nm, the emission peak is located near 663nm, the half-maximum width is 135nm, the luminous flux is as high as 100lm, and the corresponding color temperature (Tc) is about 1315K. The m...

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Abstract

The invention provides a fluorescent powder conversion type filament lamp for plant growth. The fluorescent powder conversion type filament lamp comprises light-emitting diode filaments, wherein the light-emitting diode filaments comprise base plates, a plurality of blue light chips arranged on the base plates, and layers which at least cover the surfaces of the blue light chips and surround a fluorescent material, and the emission peak value of the fluorescent material is 500-800 nm. According to the fluorescent powder conversion type filament lamp for the plant growth, the light spectrum ischanged, and the irradiation time and the irradiation intensity are controlled, so that the plant growth mode is changed, the plant development speed and form are controlled, the photosynthetic efficiency is improved, the plant quality is improved, the yield is improved, and the light supplementing requirement of plants is better met; the chemical property of the fluorescent material is stable, sothat the light emitting efficiency is high; the filament setting mode has a 360-degree light emitting angle, and therefore, the utilization rate of energy sources can be improved, the light emittingquality is guaranteed, moreover, the cost is saved, light mixing is uniform, and the light source is stable; and scientific light supplement can be carried out on the specific plant in a targeted manner by changing the proportion of the fluorescent material.

Description

technical field [0001] The invention belongs to the field of plant lighting, and in particular relates to a phosphor conversion type filament lamp for plant growth. Background technique [0002] In nature, everything grows by the sun. All stages of plant growth germination, morphogenesis, photosynthesis and gene expression require sunlight. Sunlight is a type of continuous spectrum light. Different plants obtain the light of the required wavelength from sunlight according to the needs of each stage of their life. [0003] The wavelength range of solar radiation is different according to different seasons, time, latitude, and altitude. The radiation to the ground is different, and the approximate distribution is: 290-400nm ultraviolet light, accounting for about 6% of the total solar radiation energy; 52% of the total energy of solar radiation; 800-3000nm infrared light accounts for about 42% of the total energy of solar radiation. [0004] All energy sources and main mat...

Claims

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Application Information

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IPC IPC(8): F21K9/232C09K11/85C09K11/86A01G7/04F21Y115/10
CPCA01G7/045C09K11/7733C09K11/7792F21K9/232F21Y2115/10Y02P60/14
Inventor 常耀辉陈琳潘长魁
Owner DALIAN LED LIGHTING R&D CENT CO LTD
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