CN111226632A

CN111226632A - Plant cultivation panel light source

Info

Publication number: CN111226632A
Application number: CN202010177881.XA
Authority: CN
Inventors: 丁青; 马军伟; 邢少庸
Original assignee: Weihai Hualing Opto Electronics Co Ltd
Current assignee: Weihai Hualing Opto Electronics Co Ltd
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-06-05

Abstract

The invention provides a plant cultivation panel light source. Plant cultivation panel light source includes base plate and light source subassembly, and the light source subassembly setting includes LED on the base plate, and LED includes: the ratio of the blue light quantum number in the blue light chip to the total light quantum number on the LED is more than or equal to 0.05 and less than or equal to 0.13; the green light chip, the green light quantum number in the green light chip and the proportion of the total light quantum number are more than or equal to 0.05 and less than or equal to 0.17; the ratio of the red light quantum number to the total light quantum number in the red light chip is more than or equal to 0.7 and less than or equal to 0.9. The invention solves the problem of low photosynthetic rate of plants under the irradiation of a synthetic light source in the prior art.

Description

Plant cultivation panel light source

Technical Field

The invention relates to the technical field of plant planting and vegetable production equipment, in particular to a plant cultivation panel light source.

Background

There are also light sources for plant light filling in the market now, have the light source that carries out soilless culture in the room and adopt, and the light source mainly has two kinds: one is a fluorescent tube light source, i.e. a common household fluorescent lamp, the light source has to use 220 voltage, and the service life is short due to the arrangement of a ballast, and the power of the tube is generally 40 watts, which is relatively expensive. In addition, the lamp tube can generate very high temperature after being used for a long time, influences the ambient temperature and has certain influence on the growth of plants which are slightly low in temperature. Moreover, the method is not very friendly to hydroponic plants, 220 voltage is used in a hydroponic environment, people are easy to get an electric shock, and potential safety hazards exist. Most of fluorescent lamp shells are made of glass and are fragile and dangerous, and when the glass is broken, the fluorescent powder easily pollutes plants, environment and equipment, so that potential safety hazards exist. For a fluorescent tube light source, the spectrum is single, and a lot of light is lacked, such as red light, some enterprises coat a layer of red dye on the surface of the tube or coat a layer of red paper and film on the surface of the tube, but the intensity of illumination is affected, so that the intensity of illumination is weakened, and the photosynthesis of plants is affected. The other type is an LED lighting source, at present, LED light is also adopted as a light source at home and abroad to supplement light for plants, the LED has many advantages as the light source, the power consumption is low, the service life is long, the use is safe, the voltage of the LED generally adopts direct current low voltage which is below 36V, but the LED light source also has defects, the wavelength of the light emitted by the LED is a set numerical value, the wavelength is a wave band in a very small range, and therefore the light can not be compared with sunlight, and the photosynthesis efficiency is lower.

That is, the prior art has the problem that the photosynthetic rate of plants is low under the irradiation of a synthetic light source.

Disclosure of Invention

The invention mainly aims to provide a plant cultivation panel light source to solve the problem that the photosynthesis rate of plants is low under the irradiation of a synthetic light source in the prior art.

In order to achieve the above object, the present invention provides a panel light source for plant cultivation, including a substrate and a light source assembly, the light source assembly being disposed on the substrate, the light source assembly including an LED, the LED including: the ratio of the blue light quantum number in the blue light chip to the total light quantum number on the LED is more than or equal to 0.05 and less than or equal to 0.13; the green light chip, the green light quantum number in the green light chip and the proportion of the total light quantum number are more than or equal to 0.05 and less than or equal to 0.17; the ratio of the red light quantum number to the total light quantum number in the red light chip is more than or equal to 0.7 and less than or equal to 0.9.

Further, the LED emits a light source having a luminous flux density of 20PPFD or more and 450PPFD or less.

Further, the red chip includes: the first red light chips, the blue light chips and the green light chips are combined into white light to provide light suitable for a human body; the number of the second red light chips is more than that of the first red light chips so as to provide light suitable for plant growth.

Further, the light source subassembly includes ruddiness switch spare, and the switching of ruddiness switch spare control second ruddiness chip is when the people gets into the plant cultivation canopy, and the ruddiness switch spare is closed to make the light source subassembly provide the white light of human adaptation, when the people leaves the plant cultivation canopy, ruddiness switch spare is opened, so that the light source subassembly provides the light that adapts to vegetation.

Further, the blue chip emits light with a wavelength of 430nm or more and 480nm or less; the green chip emits light with a wavelength of 505nm or more and 565nm or less; the red light chip emits light with a wavelength of 605nm or more and 675nm or less.

Further, the light source assembly comprises: the intelligent time controller controls the power-on time of the LED; and the voltage regulator controls the electrifying voltage of the LED so as to regulate the luminous intensity of the LED.

Further, the substrate is made of a metal material, and a light reflecting surface is formed on the surface of the substrate on the side where the LED is mounted.

Further, the light source subassembly includes a plurality of PCB boards, and LED installs on the PCB board, and the reflection of light face has pastes the recess, pastes the recess and is a plurality of, and a plurality of recess intervals of pasting set up, and the PCB board is installed in pasting the recess to with the light reflection to the plant on.

Further, the plant cultivation panel light source also comprises a protective coil, a mounting hole is formed in the sticking groove, and the protective coil is mounted at the mounting hole.

Further, the plant cultivation panel light source further comprises a light flux detector, and the distance between the light flux detector and the light source assembly is greater than or equal to 10 cm and smaller than or equal to 20 cm so as to detect the light flux density of the light emitted by the light source assembly.

By applying the technical scheme, the plant cultivation panel light source comprises a substrate and a light source component, the light source component is arranged on the substrate, the light source component comprises an LED, the LED comprises a blue light chip, a green light chip and a red light chip, and the ratio of the blue light quantum number in the blue light chip to the total light quantum number on the LED is more than or equal to 0.05 and less than or equal to 0.13; the ratio of the green light quantum number to the total light quantum number in the green light chip is more than or equal to 0.05 and less than or equal to 0.17; the ratio of the red light quantum number to the total light quantum number in the red light chip is more than or equal to 0.7 and less than or equal to 0.9.

The proportion of the red light chip in the plant cultivation panel light source is high, so that red light is dominant when the plant cultivation panel light source irradiates the plant. The strongest absorption region of chlorophyll absorption spectrum in plant has two parts, mainly red light part, and blue light part, and the maximum absorption band of absorption spectrum of carotene and lutein is in bluish violet light part, and does not absorb red light; the blue light also serves as a light energy transfer. The carotenoid molecules in the plant mainly absorb light with the wavelength of 400-500nm and transfer energy to chlorophyll molecules to increase the photosynthetic rate of the plant. Thereby leading the photosynthesis rate of the plants to be highest under the irradiation of red light and blue light. Therefore, the plant cultivation panel light source in this application is adopted to shine the plant and can greatly increased the photosynthesis of plant, promotes vegetation, reduces the mature cycle of plant, has increased the planting efficiency of plant to bring bigger profit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view showing an overall structure of a light source of a plant cultivation panel according to a first embodiment of the present invention;

FIG. 2 is a schematic view showing the overall structure of the substrate of FIG. 1;

FIG. 3 shows a schematic view of an angle of the substrate of FIG. 2;

fig. 4 is a schematic structural view illustrating a PCB board of the light source module of fig. 1;

fig. 5 is a circuit diagram illustrating operation of the light source module of fig. 1;

fig. 6 is a schematic view showing a positional relationship between the light source module and the luminous flux detector in fig. 1;

FIG. 7 is a schematic diagram showing the position of the light source assembly and the attachment groove of FIG. 1;

FIG. 8 is a schematic view of the structure of a protective coil of the light source of the plant-growing panel of FIG. 1;

FIG. 9 is a schematic view showing another angle of the shield coil of FIG. 8;

fig. 10 is a schematic view showing an overall structure of a substrate of a light source of a plant-cultivation panel according to a second embodiment of the present invention;

FIG. 11 shows a schematic view of an angle of the substrate of FIG. 10; and

fig. 12 shows a schematic view of the structure of the PCB board of the light source assembly adapted as in fig. 10.

Wherein the figures include the following reference numerals:

10. a substrate; 11. sticking the groove; 111. mounting holes; 12. mounting a through hole; 13. positioning holes; 20. a light source assembly; 21. an LED; 22. a red light switch; 23. an intelligent time controller; 24. a voltage regulator; 25. a PCB board; 26. a blue light chip; 27. a green chip; 28. a first red light chip; 29. a second red light chip; 30. a protective coil; 40. a fan; 50. a light flux detector.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The invention provides a plant cultivation panel light source, aiming at solving the problem that the photosynthesis rate of plants is low under the irradiation of a synthetic light source in the prior art.

As shown in fig. 1 to 12, the plant cultivation panel light source includes a substrate 10 and a light source assembly 20, the light source assembly 20 is disposed on the substrate 10, the light source assembly 20 includes an LED21, the LED21 includes a blue light chip 26, a green light chip 27 and a red light chip, and a ratio of a blue light quantum number in the blue light chip 26 to a total light quantum number on the LED21 is 0.05 or more and 0.13 or less; the ratio of the green light quantum number to the total light quantum number in the green light chip 27 is 0.05 or more and 0.17 or less; the ratio of the red light quantum number to the total light quantum number in the red light chip is more than or equal to 0.7 and less than or equal to 0.9.

Specifically, the light flux density of the light source emitted from the LED21 is 20PPFD or more and 450PPFD or less. Because the plant itself both carries out photosynthesis and carries out respiration, the plant can only grow when photosynthetic rate is greater than respiratory rate, and because the limitation of plant's own photosynthesis, it is also not that illumination intensity is the better more big, and when reaching the illumination intensity increase again of certain intensity, photosynthetic rate also can not continue to increase again, causes the waste of energy easily. That is, only when the illumination intensity is greater than the light compensation point of the plant and the photosynthesis rate of the plant is greater than the respiration rate, the plant can grow, but when the illumination intensity exceeds the light saturation point of the plant, the photosynthesis rate can not be increased, the waste of redundant photons can be generated, and the resource and energy consumption can be wasted. When the photosynthetic rate is between the light compensation point and the light saturation point, the photosynthetic rate increases with the increase of the illumination intensity. Therefore, the luminous flux density of the light source emitted by the LED21 is limited within the range of 20PPFD to 450PPFD, the photosynthetic rate of the plants can be effectively ensured to be greater than the respiration rate, and no energy waste is caused.

The plant cultivation panel light source further includes a light flux detector 50, a distance between the light flux detector 50 and the light source assembly 20 is greater than or equal to 10 cm and less than or equal to 20 cm, and a light flux density detected by the light flux detector 50 may be in a range of 20PPFD to 450 PPFD.

Preferably, the light flux detector 50 is in particular 15 cm between the light source assembly.

In this embodiment, the red chips include a first red chip 28 and a second red chip 29, the number of the first red chips 28 is the same as that of the blue chips 26, and the first red chips 28, the blue chips 26 and the green chips 27 are combined into white light to provide light suitable for a human body; the number of the second red chips 29 is greater than that of the first red chips 28 to provide light suitable for plant growth. Because the light emitted by the light source of the plant cultivation panel mainly takes red light as the main light, after people enter the space where plants grow, human eyes are not suitable in the red light environment, and the comfort is poor. The red light chip is divided into the first red light chip 28 and the second red light chip 29, so that when a person enters the space for plant growth, the light source of the plant cultivation panel can be adjusted to provide light suitable for the human body, and the comfort degree of the person is improved. And when people leave the space for plant growth, the light source of the plant cultivation panel is adjusted to provide light suitable for plant growth, so that the plants can grow rapidly.

As shown in fig. 5, the light source assembly 20 includes a red light switch 22, the red light switch 22 controls the second red light chip 29 to be turned on or off, when a person enters the plant cultivation shed, the red light switch 22 is turned off, so that the light source assembly 20 provides white light suitable for a human body, and when the person leaves the plant cultivation shed, the red light switch 22 is turned on, so that the light source assembly 20 provides light suitable for plant growth. By arranging the red light switch component 22 on the light source component 20, different illumination requirements of the plant cultivation panel light source can be adjusted.

Alternatively, the red light switch 22 may be a trigger switch, which triggers the red light switch 22 to turn off the second red light chip 29 when a person enters the plant cultivation shed, and triggers the red light switch 22 to turn on the second red light chip 29 when a person leaves the plant cultivation shed. Of course, the red light switch 22 may be an inductive switch, and the second red light chip 29 is turned off after the red light switch 22 senses a person when the person enters the plant cultivation shed, and the second red light chip 29 is turned on after the red light switch 22 does not sense the person when the person leaves the plant cultivation shed.

It should be noted that the red chip, the blue chip 26, and the green chip 27 are all light emitting diodes, and only the wavelengths of the emitted light are different. And a plurality of red chips, blue chips 26 and green chips 27.

Specifically, the blue chip 26 emits light having a wavelength of 430nm or more and 480nm or less; the green chip 27 emits light having a wavelength of 505nm or more and 565nm or less; the red light chip emits light with a wavelength of 605nm or more and 675nm or less. The plant has high absorption efficiency on the light in the wave bands, and the use number of the LEDs 21 can be reduced, so that energy is saved.

Preferably, the blue chip 26 emits light having a wavelength of 450nm or more and 480nm or less; the green chip 27 emits light having a wavelength of 505nm or more and 535nm or less; the red light chip emits light with a wavelength of 605nm or more and 635nm or less.

As shown in fig. 5, the light source assembly 20 includes a smart time controller 23 and a voltage regulator 24, the smart time controller 23 controls the time when the LED21 is powered on; the voltage regulator 24 controls the energization voltage of the LED21 to regulate the light emission intensity of the LED 21. The intelligent time controller 23 can control the power-on time of the LED21, and the intelligent time controller can adjust the power-on time of the LED21 according to the optimal illumination time required by plants of different varieties and plants in different growth periods, so that the waste of energy is reduced while the rapid growth of the plants is ensured. The voltage regulator 24 can regulate the voltage of the LED21, so as to change the illumination intensity, and regulate the energizing voltage of the LED21 according to the illumination intensity required by different varieties of plants and plants in different growth periods.

Specifically, the substrate 10 is made of a metal material, and a light reflecting surface is formed on the surface of the substrate 10 on which the LED21 is mounted. The metal material has good reflectivity, and the light that LED21 launched can be reflected to the reflection of light face to make light all shine on the plant, increase the utilization ratio of the light of LED21 transmission, reduce the waste of the energy.

As shown in fig. 2 and 4, the light source assembly 20 includes a plurality of PCB boards 25, the LEDs 21 are mounted on the PCB boards 25, the light reflecting surface has a plurality of pasting grooves 11, the plurality of pasting grooves 11 are spaced apart, and the PCB boards 25 are mounted in the pasting grooves 11 to reflect light onto the plants. The PCB 25 is arranged to facilitate mounting of the LED21 on a reflective surface, and the PCB facilitates power supply to the LED21 to ensure stable operation of the LED 21. The PCB board is convenient to install on the reflective surface to the setting of pasting recess 11, and pastes the cell wall of recess 11 and also can reflect light, and then with the light reflection that LED21 sent to the plant on, reduce the light directive to other directions, reduced the waste of the energy.

As shown in fig. 2, 8 and 9, the plant cultivation panel light source further includes a protective coil 30, a mounting hole 111 is provided in the sticking groove 11, and the protective coil 30 is mounted at the mounting hole 111. The protective coil 30 is sleeved on the electric wire, so that the abrasion of the base plate 10 to the electric wire can be effectively reduced, the electric leakage of the electric wire is reduced, and the working stability and safety of the light source of the plant cultivation panel are improved.

In the embodiment shown in fig. 8 and 9, the protective coil 30 has a hollow structure to facilitate the passing of the electric wire, so as to reduce the friction between the electric wire and the substrate 10 and prevent the substrate 10 from cutting the electric wire. The periphery wall of the protective coil 30 is provided with a clamping groove, and the clamping groove is clamped at the mounting hole 111 to prevent the protective coil 30 from being separated from the substrate 10.

As shown in fig. 1, the light source of the plant cultivation panel further includes a fan 40, the fan 40 is disposed on the light reflecting surface, the fan 40 is spaced apart from the light source assembly 20, and the fan 40 blows air around the plant to enhance photosynthesis of the plant. The fan 40 is arranged on the light source of the plant cultivation panel to blow air around the plants to change the content of components in the air around the plants, so that sufficient carbon dioxide is always arranged around the plants, and the photosynthetic rate of the plants is ensured.

As shown in fig. 2, the substrate 10 has a mounting through hole 12, the mounting through hole 12 is located between the two attaching grooves 11, and the fan 40 is mounted at the mounting through hole 12. The substrate 10 also has positioning holes 13, and the substrate 10 is mounted to other structural members through the positioning holes 13 to position the substrate 10.

It should be noted that the fan 40 does not dissipate heat from the light source of the plant cultivation panel, but makes air around the plant flow so that carbon dioxide flows to the plant quickly to provide raw material for photosynthesis of the plant. In addition, because plant cultivation panel light source is installed at the position that is nearer apart from the plant, fan 40 also can blow plant blade motion, and then makes the air flow between the plant blade, increases the photosynthetic rate of plant to make the plant grow fast. The fan 40 is a low-power fan, and the blown wind is gentle, so that the blades of the plant are not blown off.

Example one

In the embodiment shown in fig. 1 to 9, the PCB 25 and the pasting groove 11 are both in a strip shape, and the LEDs 21 are sequentially arranged at intervals along the length direction of the PCB 25.

Example two

The difference from the first embodiment is that the shapes of the PCB 25 and the sticking groove 11 are different.

In the embodiment shown in fig. 10 to 12, the PCB 25 and the sticking groove 11 are in a square block shape, and the LEDs 21 are spaced on the PCB 25.

It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plant cultivation panel light source, comprising a substrate (10) and a light source assembly (20), the light source assembly (20) being arranged on the substrate (10), the light source assembly (20) comprising an LED (21), the LED (21) comprising:

a blue light chip (26), a ratio of a blue light quantum number in the blue light chip (26) to a total light quantum number on the LED (21) being 0.05 or more and 0.13 or less;

a green chip (27), wherein the ratio of the green quantum number to the total light quantum number in the green chip (27) is greater than or equal to 0.05 and less than or equal to 0.17;

and the ratio of the red light quantum number to the total light quantum number in the red light chip is more than or equal to 0.7 and less than or equal to 0.9.

2. Plant growing panel light source according to claim 1, characterized in that the light flux density of the light source emitted by the LED (21) is greater than or equal to 20PPFD and less than or equal to 450 PPFD.

3. The plant cultivation panel light source of claim 1, wherein the red light chip comprises:

the number of the first red light chips (28) is the same as that of the blue light chips (26), and the first red light chips (28), the blue light chips (26) and the green light chips (27) are combined into white light to provide human body-adapted light;

a second red light chip (29), the number of the second red light chips (29) being greater than the first red light chips (28) to provide light adapted to plant growth.

4. The plant cultivation panel light source according to claim 3, wherein the light source assembly (20) comprises a red light switch (22), the red light switch (22) controls the second red light chip (29) to be turned on and off, the red light switch (22) is turned off when a person enters the plant cultivation shed so that the light source assembly (20) provides white light adapted to the human body, and the red light switch (22) is turned on when the person leaves the plant cultivation shed so that the light source assembly (20) provides light adapted to the growth of the plant.

5. The plant-cultivation panel light source as claimed in claim 1,

the blue light chip (26) emits light with a wavelength of 430nm or more and 480nm or less;

the green chip (27) emits light with a wavelength of 505nm or more and 565nm or less;

the red light chip emits light with a wavelength of 605nm or more and 675nm or less.

6. Plant cultivation panel light source according to any of claims 1 to 5, characterized in that the light source assembly (20) comprises:

an intelligent time controller (23), the intelligent time controller (23) controlling the energizing time of the LED (21);

a voltage regulator (24), the voltage regulator (24) controlling an energization voltage of the LED (21) to regulate a light emission intensity of the LED (21).

7. The plant cultivation panel light source according to any one of claims 1 to 5, wherein the substrate (10) is made of a metal material, and a surface of the substrate (10) on a side where the LED (21) is mounted forms a light reflecting surface.

8. The plant cultivation panel light source as claimed in claim 7, wherein the light source assembly (20) comprises a plurality of PCB boards (25), the LEDs (21) are installed on the PCB boards (25), the light reflecting surface has a plurality of pasting grooves (11), the pasting grooves (11) are plural, the plurality of pasting grooves (11) are arranged at intervals, and the PCB boards (25) are installed in the pasting grooves (11) to reflect light onto the plants.

9. The plant cultivation panel light source as claimed in claim 8, further comprising a loop guard (30), the sticking groove (11) having a mounting hole (111) therein, the loop guard (30) being mounted at the mounting hole (111).

10. Plant cultivation panel light source according to claim 7, further comprising a light flux detector (50), the distance between the light flux detector (50) and the light source assembly (20) being greater than or equal to 10 cm and less than or equal to 20 cm to detect the light flux density of the light emitted by the light source assembly (20).