JP2015002733A - Led lightening module for plant factory and led lightening device for plant factory mounting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lightening module for a plant factory which reduces a unit manufacturing cost for a lightening device for a plant factory by eliminating generally adopted expensive LED red chips and by adopting LED blue chips and can relatively further enhance growth efficiency of plants by improving wavelength of light emitted from the lightening device.SOLUTION: Embodied is that light emitted from the LED lightening module and the LED lightening device mounting the LED lightening module shows a peak value in a wavelength band (450 nm) in a blue color light and also shows the peak value in a wavelength band (660nm) in a red color light, that enables growth of plants to be wholly promoted. In addition, blue-chip light source and an RGY phosphor applied on an external surface of the blue-chip light source are embodied in one chip.

Description

  The present invention eliminates expensive LED red chips that are generally used in plant factories, and instead uses LED blue chips to reduce the production cost of lighting devices for plant factories. The present invention relates to a technique that can reduce fatigue, improve the working environment, improve the wavelength of light emitted from a lighting device, and further increase the growth efficiency of plants.

  More specifically, the light emitted from the LED illumination module and the LED illumination device on which the LED illumination module is mounted is configured to implement a primary peak value in a blue series wavelength band (450 nm), and a red series wavelength band ( 660 nm) is a technique for realizing the secondary peak value so that the growth of the plant is generally promoted.

  Generally, plants absorb nutrients from the roots, produce energy through photosynthesis in the leaves, and use them for plant growth.

  And since a plant factory grows a plant indoors, it will emit artificial lighting similar to sunlight for the photosynthesis of a plant.

  However, although there are many ways to implement artificial lighting, it can be said that embodying a wavelength band of light suitable for plant growth is the core technology in plant factories.

  Conventionally, there was a method using a three-wavelength fluorescent lamp, but there was a problem that power consumption was too large, the life span was short, and it was unsuitable for plant growth.

  Therefore, a lighting device using LEDs has been developed, and a red chip has been adopted in order to realize a red wavelength band that is very important for the growth of plants. The red chip may be combined with a blue LED or a white LED to implement a target wavelength band.

  However, the red chip is more expensive and consumes more power than the blue chip, so it is inefficient to operate a plant factory, but it is used to implement the red wavelength band. It is.

  In order to solve the above disadvantages, the RGY phosphor is applied to the LED blue chip to reduce the manufacturing unit price of the lighting device for the plant factory, and to improve the wavelength of light emitted from the lighting device. Implementation of technology that can further increase the growth efficiency is required.

Korean Patent Application No. 10-2010-0028266 Korean Patent Application No. 10-2003-0078989

  The present invention has been proposed in consideration of the above points, and the object of the present invention is to adopt a low-cost LED blue chip to reduce the production unit price of a lighting device for a plant factory, and from the lighting device. An object of the present invention is to provide an LED lighting module for a plant factory that can further improve the growth efficiency of plants by improving the wavelength of emitted light, and an LED lighting apparatus for a plant factory equipped with the LED lighting module.

  In order to achieve the above object, an LED lighting module for a plant factory according to the present invention is an LED lighting module provided in an LED lighting device for a plant factory, which is driven by a power source supplied from the outside and is of a blue series Blue chip light source that emits light; a combination of yellow, green, and red phosphors, applied to the outer surface of the blue chip light source, and the amount of light irradiated through the blue chip light source is in the range of 625 nm to 700 nm And a second maximum point having a value smaller than the first maximum point in the region of 430 nm to 470 nm, and a second maximum point in the region of 550 nm to 660 nm. An RGY phosphor that maintains a value equal to or greater than 2 maximum points.

  An LED lighting device for a plant factory equipped with an LED lighting module according to the present invention includes a blue chip light source that emits blue-series light by being driven by an externally supplied power source, a yellow series, a green series, and a red series phosphor. Are combined, applied to the outer surface of the blue chip light source, and the amount of light irradiated through the blue chip light source indicates a first maximum point having a maximum value in a region of 625 nm to 700 nm, so that 430 nm to 470 nm. An RGY phosphor that shows a second maximum point having a value smaller than the first maximum point in the region of, and maintains a relatively larger value than the second maximum point in the region of 550 nm to 660 nm. LED lighting module comprising: a plurality of LED lighting modules, circuit wiring is patterned and LED lighting Configured to include a; frame for fixing the circuit board in a state where the bottom surface of the circuit board is seated; controls Joules on / off, a circuit board for applying external power to the LED lighting module.

  The circuit board may be configured to further include a circuit board that is detachably attached to the peripheral edge of the bottom surface of the frame and is seated on the frame, and a finishing cover that finishes the LED lighting module mounted on the circuit board.

  On the other hand, a plurality of LED illumination modules mounted on a circuit board can be arranged in a row at regular intervals.

  The LED lighting device for a plant factory according to the present invention is

  (1) Generally, expensive LED red chips used in plant factory lighting devices are eliminated, LED blue chips are used to reduce the production unit price, and the emitted light is in a blue series wavelength band ( The peak value is realized at 450 nm), and the peak value is also realized at the red wavelength band (660 nm), thereby further promoting the growth of plants.

  (2) Further, in such a wavelength band, there is an advantage that the working environment is improved by reducing eye fatigue caused by a red light source.

  (3) A blue chip light source for realizing a peak value in a blue series wavelength band (450 nm) and a red series wavelength band (660 nm), and an RGY phosphor applied to the outer surface of the blue chip light source; Is implemented on a single chip, making it easy to manufacture.

It is an illustration figure which shows the LED lighting apparatus for plant factories which concerns on this invention. It is drawing which extracted and expanded the LED lighting apparatus and LED lighting module for plant factories which concern on this invention. It is the photograph which image | photographed the pattern in which the LED lighting apparatus for plant factories which concerns on this invention was provided. It is the graph which showed the target conditions of a specific wavelength band with respect to the wavelength of the light emitted from the LED lighting apparatus for plant factories concerning the present invention. This is a photograph of a pattern in which a general fluorescent lamp is installed in a plant factory. It is the graph which showed the wavelength of the light emitted from a general fluorescent lamp. It is the photograph which image | photographed the pattern with which the illuminating device which combined red LED and blue LED was provided in the plant factory. It is the graph which showed the wavelength of the light emitted from the illuminating device which combined red LED and blue LED. It is the photograph which image | photographed the pattern with which the illuminating device which combined white LED for general illumination and red LED was provided in the plant factory. It is the graph which showed the wavelength of the light emitted from the illuminating device which combined white LED and red LED for general illumination. It is the photograph which image | photographed the pattern in which the white LED lighting device which emphasized the red wavelength band was provided in the plant factory. It is the graph which showed the target conditions of a specific wavelength band with respect to the wavelength of the light emitted from the white LED illuminating device which emphasized the red wavelength band. It is the photograph which image | photographed the pattern in which the some LED lighting apparatus containing the LED lighting apparatus of this invention was provided in the plant factory for the comparative experiment. It is the graph which compared the growth state in case light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED, and the illuminating device based on this invention to a "scissor thread" plant. It is the graph which compared the growth state in case light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED, and the illuminating device based on this invention to a "scissor thread" plant. It is the graph which compared the growth state in case light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED with the "lettuce" plant, and the illuminating device which concerns on this invention, respectively. It is the graph which compared the growth state in case light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED with the "lettuce" plant, and the illuminating device which concerns on this invention, respectively. It is the graph which compared the growth state when light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED, and the illuminating device which concerns on this invention to a "scissors green" plant. It is the graph which compared the growth state when light is irradiated from the illuminating device which combined the fluorescent lamp, white LED, and red LED, and the illuminating device which concerns on this invention to a "scissors green" plant.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an exemplary view showing an LED lighting device for a plant factory according to the present invention, and FIG. 2 is an enlarged view of the LED lighting device for a plant factory and an LED lighting module according to the present invention. .

  Referring to FIGS. 1 and 2, an LED lighting module 100 for a plant factory according to the present invention is provided in an LED lighting device and includes a blue chip light source 10 and an RGY phosphor (Red Green Yellow Phosphor) 20.

  The blue chip light source 10 is driven by a power source supplied from the outside to emit blue series light. After the RGY phosphor 20 is applied to the outer surface, the light emitted by the blue chip light source 10 and the RGY phosphor 20 together realizes white light that emphasizes the red wavelength band.

  The RGY phosphor 20 is formed by combining yellow, green, and red phosphors, and is applied to the outer surface of the blue chip light source 10 so that the amount of light irradiated through the blue chip light source 10 is within a range of 625 nm to 700 nm. The first maximum point having the maximum value is indicated, the second maximum point having a value smaller than the first maximum point is indicated in the region of 430 nm to 470 nm, and the second maximum point is indicated in the region of 550 nm to 660 nm. Keep the value above the local maximum of.

  At this time, the RGY phosphor 20 is preferably applied to the outer surface of the blue chip light source 10 and can be attached in the form of a sticker.

  The LED lighting device for a plant factory according to the present invention includes an LED lighting module 100 and includes a circuit board 200, a frame 300, and a finishing cover 400.

  The LED illumination module 100 is configured by combining a blue chip light source 10 that emits blue series light by being driven by a power source supplied from the outside, and a yellow series, green series, and red series phosphor. The amount of light applied through the bull chip light source 10 shows a first maximum point having a maximum value in the region of 625 nm to 700 nm, and the first maximum point in the region of 430 nm to 470 nm. The second maximum point having a small value is indicated, and is configured to maintain a value relatively larger than the second maximum point in the region of 550 nm to 660 nm.

  A plurality of LED lighting modules 100 are mounted on the circuit board 200, and circuit wiring is patterned to control on / off of the LED lighting modules 100 so that an external power source is applied to the LED lighting modules 100.

  The frame 300 fixes the circuit board 200 in a state where the bottom surface of the circuit board 200 is seated, and is fixed to the support frame of the plant factory to support the lighting device.

  The finishing cover 400 is detachably attached to the peripheral edge of the bottom surface of the frame 300, and finishes the circuit board 200 seated on the frame 300 and the LED lighting module 100 mounted on the circuit board 200. At this time, the finish cover 400 may be selected from any one of glass or synthetic resin material, and preferably from a light synthetic resin material.

  Again, the RGY phosphor 20 can be applied to the outer surface of the blue chip light source 10 or attached in the form of a sticker.

  As shown in FIG. 1, a plurality of LED lighting modules 100 mounted on a circuit board 200 can be arranged in a line at regular intervals.

  FIG. 3 is a photograph of a pattern provided with a plant factory LED lighting device according to the present invention, and FIG. 4 shows the wavelength of light emitted from the plant factory LED lighting device according to the present invention. It is the graph which showed the target conditions of a specific wavelength band. Here, the graph shown in FIG. 4 schematically shows only the target condition for a part of a specific wavelength band, and the continuous part is omitted.

  3 and 4, an RGY phosphor 20 formed by combining yellow, green, and red phosphors is applied to the outer surface of the blue chip light source 10. At this time, the blue chip light source 10 shows a first maximum point where the intensity of light has a maximum value in a region where the amount of light irradiated through 10 is 625 nm to 700 nm, and has a value smaller than the first maximum point in a region of 430 nm to 470 nm. The second maximum point is shown. Then, a value relatively larger than the second maximum point is maintained in the region of 550 nm to 660 nm.

  In other words, the region [3] of the graph shown in FIG. 4 has the first maximum point, the region [1] has the second maximum point, and the region [2] has the second maximum point. Maintain a relatively large value.

  The effects of the present invention embodying such light intensity and wavelength band can be confirmed from the following description of FIGS.

  FIG. 5 is a photograph of a pattern in which a general fluorescent lamp is provided in a plant factory, and FIG. 6 is a graph showing an analysis of the wavelength of light emitted from such a general fluorescent lamp. is there.

  Referring to FIGS. 5 and 6, the light emitted from a general three-wavelength fluorescent lamp has a very high light intensity in the 660 nm wavelength band, which is very important for the growth of the plant of interest in the present invention. You can see that it is weak.

  FIG. 7 is a photograph of a pattern in which a lighting device combining a red LED and a blue LED is provided in a plant factory, and FIG. 8 shows light emitted from the lighting device combining a red LED and a blue LED. It is the graph which showed wavelength.

  Referring to FIG. 7 and FIG. 8, the light emitted from the illuminating device has a peak intensity in a 450 nm wavelength band that is a blue series and a 660 nm wavelength band that is a red series, but a region of 550 nm to 660 nm. In this wavelength band, the strength is relatively smaller than the intensity of the 450 nm wavelength band, which has a disadvantageous condition for plant growth.

  FIG. 9 is a photograph of a pattern in which a lighting device combining a general white LED and a red LED is provided in a plant factory, and FIG. 10 illustrates a combination of a general white LED and a red LED. It is a graph which shows the wavelength of the light light-emitted from an apparatus.

  Referring to FIG. 9 and FIG. 10, the light emitted from the illumination device has a peak value of 550 nm to 660 nm in the blue series of 450 nm wavelength band and the red series of 660 nm wavelength band. As described above with reference to FIGS. 7 and 8, if the intensity of the region is relatively smaller than that of the 450 nm wavelength band, it has a disadvantageous condition for plant growth. The result with respect to this can be confirmed from the following description of FIGS.

  FIG. 11 is a photograph of a pattern in which a white LED illuminating device with an emphasized red wavelength band is provided in a plant factory, and FIG. 12 is a wavelength of light emitted from the white LED illuminating device with an emphasized red wavelength band. Is a graph showing target conditions for a specific wavelength band. Here, the graph shown in FIG. 12 schematically shows only target conditions for a part of a specific wavelength band, and a continuous part is omitted.

  Referring to FIG. 11 and FIG. 12, the intensity of light emitted from the illuminating device shows a peak value in the 450 nm wavelength band that is a blue series, and is more relative to the intensity of the 450 nm wavelength band in the wavelength band of 550 nm to 660 nm. If the intensity is not realized at the peak value in the 660 nm wavelength band, which is a red series, even if the intensity is kept high, this also has a very disadvantageous condition for plant growth.

  That is, referring to FIG. 12, the region [1] has the second maximum point, and the region [2] maintains a relatively larger value than the second maximum point. However, even if the first maximum point is shown in the area [3] of the graph, if the intensity is not realized at the peak value in the 660 nm wavelength band, this also has a very disadvantageous condition for the growth of the plant. Become.

  FIG. 13 is a photograph of a pattern in which a plurality of LED lighting devices including the LED lighting device of the present invention are provided in a plant factory for a comparative experiment. The experiments shown in FIGS. In order to obtain results, many kinds of lighting devices provided in plant factories are shown.

  Through the experiments shown in FIGS. 14 to 19, according to the conditions in Table 1 below, a “scissor thread” is generated by light emitted from a fluorescent lamp, white LED + red LED, and three types of illumination devices according to the embodiment of the present invention. , "Lettuce" and "scissors green" plants were observed to grow.

  Here, the height immediately below indicates the distance from the LED illumination module 100 to the measurement point.

  FIG. 14 and FIG. 15 are graphs comparing the growth state when light is irradiated from the lighting device according to the present invention and the lighting device combining the fluorescent lamp, the white LED and the red LED with the “scissor thread” plant. is there.

  As shown in FIGS. 14 and 15, “scissor thread” grown through a white LED + red LED lighting device using a red chip with high power consumption and unit price adopts a blue chip with low power consumption and low unit price It can be seen that the growth rate is almost the same as that of the “scissor thread” grown through the lighting device of the present invention (white LED).

  FIG. 16 and FIG. 17 are graphs comparing the growth state in the case where light is irradiated from the lighting device according to the present invention and the lighting device combining the “lettuce” plant with a fluorescent lamp, white LED and red LED, respectively. .

  Referring to FIGS. 16 and 17, “lettuce” grown through a white LED + red LED lighting device using a red chip with high power consumption and unit price is a blue chip with low power consumption and low unit price. It can be seen that “lettuce” grown through the lighting device of the invention (white LED) shows a better growth rate.

  FIG. 18 and FIG. 19 are graphs comparing the growth state when light is irradiated from the lighting device according to the present invention and the lighting device combining the fluorescent light, the white LED and the red LED with the “scissors green” plant. is there.

  Referring to FIG. 18 and FIG. 19, “Scissors Green” grown through a lighting device of white LED + red LED using a red chip with high power consumption and unit price has adopted a blue chip with low power consumption and low unit price. It can be seen that “scissors green” grown through the lighting device of the present invention (white LED) shows a better growth rate.

  14 to 19, as a result of experiments through “scissor threads”, “lettuce”, and “scissors green”, the lighting device of the present invention (white LED) adopting a blue chip with low power consumption and low unit price In general, it can be confirmed that the plant growth rate is better than that of the white LED + red LED lighting device using the red chip with high power consumption and unit price.

  On the other hand, a lighting device using a fluorescent lamp has a higher power consumption than a lighting device combining a white LED and a red LED, and the lighting device according to the present invention, but the growth rate of each plant is disadvantageous. This can also be confirmed from FIGS.

10: Blue chip light source 20: RGY phosphor 100: LED lighting module 200: Circuit board 300: Frame 400: Finish cover

Claims (4)

An LED lighting module provided in an LED lighting device for a plant factory,
A blue chip light source 10 that is driven by an external power supply to emit blue light;
Yellow, green, and red phosphors are combined and applied to the outer surface of the blue chip light source. The second maximum point having a value smaller than the first maximum point in the region of 430 nm to 470 nm, and the second maximum point in the region of 550 nm to 660 nm. An RGY phosphor 20 that maintains a value above the local maximum;
LED lighting module for plant factories comprising: An LED lighting device for a plant factory equipped with an LED lighting module,
The blue chip light source 10 that is driven by an external power source to emit blue light and the yellow, green, and red phosphors are combined and applied to the outer surface of the blue chip light source. The amount of light irradiated from the outside through the blue chip light source indicates a first maximum point having a maximum value in a region of 625 nm to 700 nm, and is smaller than the first maximum point in a region of 430 nm to 470 nm. An LED lighting module 100 comprising an RGY phosphor 20 that exhibits a second maximum point having a value and maintains a relatively larger value than the second maximum point in the region of 550 nm to 660 nm;
A circuit board 200 on which a plurality of the LED lighting modules are mounted, circuit wiring is patterned to control on / off of the LED lighting modules, and an external power source is applied to the LED lighting modules;
A frame 300 for fixing the circuit board with the bottom surface of the circuit board being seated;
LED lighting device for plant factories comprised.   The circuit board further detachably attached to a peripheral edge of the bottom surface of the frame and seated on the frame, and a finishing cover 400 for finishing the LED lighting module mounted on the circuit board. The LED lighting device for plant factories according to claim 2 characterized by things.   The LED lighting device for a plant factory according to claim 3, wherein a plurality of the LED lighting modules mounted on the circuit board are arranged in a line at regular intervals.

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