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Light-emitting diode (LED) illumination device for plant cultivation

A technology of LED lighting and LED light source, applied in the direction of lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of limited adjustment ability and low optical efficiency of LED lighting devices, and achieve the solution of limited adjustment ability and high optical efficiency. The effect of efficiency and simple structure

Inactive Publication Date: 2011-04-20
FUDAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of limited adjustment ability and low optical efficiency of general plant cultivation LED lighting devices, and provide a high optical efficiency, which can flexibly adjust the spectrum, intensity, frequency and duty cycle of LED lighting for plant cultivation LED Lighting Devices

Method used

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  • Light-emitting diode (LED) illumination device for plant cultivation
  • Light-emitting diode (LED) illumination device for plant cultivation

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Embodiment 1

[0013] Embodiment 1: as figure 1 As shown, LED drive controller 1, heat sink 2, aluminum substrate 3, LED light source 4 and optical element 5 form a lighting system, the lighting system is installed on the top of the shelf 6, the shelf 6 is trapezoidal, several shelves 7 Installed on the shelf 6 from top to bottom. Both the shelf 6 and the shelf 7 are made of stainless steel. The plants are placed on the shelf 7 .

[0014] In the lighting system, the LED light source 4 uses the same number of red light LEDs and blue light LEDs, and the same number of red light LEDs and blue light LEDs are evenly welded on the aluminum substrate 3, and their wavelengths are 630nm and 460nm respectively. device 2.

[0015] There are two LED drive controllers 1, which are respectively electrically connected to two LED light sources 4 using red LEDs and blue LEDs, and use pulse width modulation to adjust the size, frequency and duty cycle of the two LED operating currents respectively.

[001...

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Abstract

The invention belongs to the technical field of agriculture and illumination, in particular relates to a light-emitting diode (LED) illumination device for plant cultivation. The LED illumination device comprises an LED drive controller, a radiator, an aluminium substrate, LED light sources, optical elements, storage racks and a shelf, wherein the LED drive controller, the radiator, the aluminum substrate, the LED light sources and the optical components form an illumination system which is mounted on the top of each storage rack; the storage shelf is ladder-shaped; and a plurality of storage racks are mounted on the storage shelf from top to bottom. In the illumination system, the LED drive controller and the LED light sources are electrically connected, and a pulse width modulation (PWM) mode is utilized to adjust the magnitude, frequency and duty ratio of the working current of the LED light sources so as to adjust the magnitude, frequency and duty ratio of the light output of the LED light sources; the LED light sources are welded on the aluminium substrate which is mounted on the radiator; and one optical component is arranged in front of each LED light source, and light emitted from each LED light source is evenly and intensively radiated on the shelf by the optical component. The invention has the advantages of simple structure, novel thinking and high optical efficiency, and being capable of adjusting the magnitude, frequency and duty ratio of the LED illumination of the plants.

Description

technical field [0001] The invention belongs to the technical fields of agriculture and lighting, and in particular relates to an LED lighting device for plant cultivation. Background technique [0002] With the development of modern agricultural technology, it has become common for artificial light sources to supplement or replace natural light for plant cultivation lighting. Due to the rapid development of LED technology in recent years and the advantages of LED itself, the use of LED light sources to study the effects of artificial light on plant growth has become a research hotspot in this field at home and abroad. [0003] The parameters affecting the growth of plants by light include: spectrum, light intensity, frequency of modulated light, and duty cycle. Therefore, if there is an LED lighting device for plant cultivation that can flexibly adjust these parameters of LED light, then for this Research work in this field has important application value. Judging from ex...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V17/00F21V19/00F21V23/00F21V5/04F21V7/00H05B37/02A01G9/20F21Y101/02
Inventor 刘木清沈海平张万路周小丽蒋晓波顾鑫
Owner FUDAN UNIV
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