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Method for combining LED with homogeneous proportion of red blue light as well as module thereof

A light-emitting diode, blue light-emitting technology, applied in light source combinations, semiconductor devices of light-emitting elements, light sources, etc., can solve problems such as unsatisfactory R/B distribution uniformity, and achieve fast assembly, fast replacement, and low degree of uniformity. Affected Effects

Inactive Publication Date: 2008-08-27
ZHEJIANG FORESTRY UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This existing technology has significantly improved the illuminance in the lighting area compared with the above two patents, but the uniformity of R / B distribution is still not ideal

Method used

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  • Method for combining LED with homogeneous proportion of red blue light as well as module thereof
  • Method for combining LED with homogeneous proportion of red blue light as well as module thereof
  • Method for combining LED with homogeneous proportion of red blue light as well as module thereof

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the embodiments and with reference to the accompanying drawings: Fig. 1 is a structural schematic diagram of a module unit with 8 LEDs in rows and columns, and red and blue LEDs are evenly spaced one by one. The red light emitting diode 1 and the blue light emitting diode 3 are installed on the circuit board 2, and the back of the circuit board is a connecting circuit, and the structure of the circuit is shown in FIG. 6 . Because the driving currents of red LEDs and blue LEDs are different, every two columns are used as a group, connect the blue LEDs in series and connect them to the current limiting resistor R1, connect the red LEDs in series and connect them to the current limiting resistor R2, R1= 360-2.4k ohms, R2=510-3.3k ohms, and then a DC stabilized power supply provides working voltage for each series-connected red LED and each series-connected blue LED. Adjust R1 to 1.2k ohms and R2 to...

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Abstract

The present invention discloses a light emitting diode combining method enabling uniform proportion between red light and blue light. Firstly, selecting single LED, an extra-bright circular lamp with a half-value angle of 7 degrees, a diameter of 5 mm and a wavelength of 636 nm is selected for the red light LED; an extra-bright circular lamp with a half-value angle of 7 degrees, a diameter of 5 mm and a wavelength of 459 nm is selected for the blue light LED; secondly, eight LEDs are arranged on each line and each row, and each red LED and each blue LED are evenly arranged at intervals, the surrounding of each LED are LEDs with the other color, the spacing between two adjacent LEDs is no more than 2.5 mm, 64 LEDs with the arranging manner form a 8x8 array to be arranged on a circuit board so as to be made into a light emitting diode combining module, and the module is used as a unit module which can be assembled or expanded longitudinally and / or transversely according to needs, and the uniformity of the distribution of the ratio R / B between the red light and blue light photons flux is not changed. The method is suitable for being used as light source for photosynthesis of plants in a greenhouse and being an illumination light source for plant factories. The method has the advantages of convenient mounting, replacing, assembly and expansion, and uniform distribution of R / B ratio.

Description

technical field [0001] The invention relates to an arrangement method and a module thereof in which red light emitting diodes and blue light emitting diodes are combined to form a uniform ratio of red and blue light. Background technique [0002] Since the luminescent wavelength just matches the spectral range of plant photosynthesis, red and blue light-emitting diodes (LEDs) can be used for lighting, supplementary light and morphological adjustment of plants. Compared with traditional artificial light sources, red and blue light-emitting diodes have many advantages such as low energy consumption, long life, and cold light type. As a new type of artificial light source for plant factories and greenhouses, it has become increasingly mature. Scientific research shows that the appropriate ratio of red light and blue light quantum flux R / B is the guarantee for the soundness of the irradiated plants. As an artificial light source for plant production, a balanced spectrum of red ...

Claims

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Application Information

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IPC IPC(8): F21V19/00F21V23/00F21Y101/02F21Y113/00F21Y105/16F21Y113/17F21Y115/10
Inventor 周国泉郑军樊艳
Owner ZHEJIANG FORESTRY UNIVERSITY
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