CN108302368A - A kind of plant growth lamp - Google Patents
A kind of plant growth lamp Download PDFInfo
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- CN108302368A CN108302368A CN201710831417.6A CN201710831417A CN108302368A CN 108302368 A CN108302368 A CN 108302368A CN 201710831417 A CN201710831417 A CN 201710831417A CN 108302368 A CN108302368 A CN 108302368A
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- film
- light
- light conversion
- plant growth
- growth lamp
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Biodiversity & Conservation Biology (AREA)
- Botany (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Environmental Sciences (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a kind of plant growth lamp, which includes blue LED lamp and the light conversion film that is arranged on the outside of blue LED lamp light-emitting surface.The light conversion film of plant growth lamp of the present invention is replaceable, excites different light conversion films that the switching and adjusting of spectrum can be realized by single class LED backlight, meets different cultivars and the spectral color demand of growth phase plant.
Description
Technical field
The present invention relates to a kind of plant growth lamps.
Background technology
Plant growth lamp is a kind of artificial light sources, is suitble to photosynthetic electromagnetic spectrum (400- by designing to emit
700nm) stimulate plant growth.Photosynthesis is the process of a plant conversion solar energy, and the chlorophyll wherein in blade is inhaled
Sunlight is received to provide whole energy needed for plant.
The color of phytochrome determines selective absorbing of the plant to different wave length.Most common phytochrome is that leaf is green
Element, carotenoid, anthocyanin etc..In photosynthesis, prevailing plant absorption peak is the indigo plant in visible light
Light and red light portion.The primary pigments of photosynthesis of plant are Chlorophylls and Carotenoids, they absorb blue light and feux rouges；Flower
Green element is another important pigment for determining vegetation color, mainly absorbs green light.What different phytochrome absorbed different wave length can
It is light-exposed.Chlorophyll a has absorption peak, chlorophyll b to have absorption peak near 640nm and 450nm near 665nm and 430nm, and class is recklessly
Radish element has absorption peak, anthocyanidin to have absorption peak near 540nm near 440nm and 360nm.Wherein, chlorophyll a and leaf are green
Plain b is main pigment in green plants, and chlorophyll a can absorb the light of 650-700nm wavelength, and chlorophyll b can absorb 380-
The light of 500nm, 530-650nm wavelength, and the light of 510-620nm wavelength cannot be absorbed, be reflected, and luminous energy is caused to waste.As it can be seen that
Most plants only absorb certain specific lights in visible spectrum.
According to correlative study, feux rouges is conducive to flowering of plant and as a result, and blue light then promotes plant growth.Plant is given birth to
Long, the general proportions of feux rouges and blue light are as follows：It is about 3 in the ratio of plant growth stage feux rouges and blue light:1；It is opened in plant
The ratio of flower result stage, feux rouges and blue light is about 8:1.Therefore, the plant for being more suitable for spectrum needed for plant cultivation need to be customized
Growth lamp.According to the vegetation type of cultivation or breeding phase (such as germination/plant growth stage or flowering of plant/result rank
Section), using the spectrum of particular range.
It can only be controlled by Electronic Design in the spectrum of traditional plant growth lamp industry, plant growth lamp, need to use
One system controls the quantity of red-light LED and blue-ray LED, to provide the special ratios of red light and blue lamp needed for growth.When
So, this design can also develop into target optical spectrum, such as red:Blue is 3:1 or 5:1, still, since light is not can be uniformly dispersed
And the light angle of LED is limited, the spatial uniformity using the light of system generation is not high enough.
Currently, the plant growth lamp of most commercial is the plant growth lamp of feux rouges, green light, blue light and white light LED combination,
It is the combination of single R/G/B/W spectrum in its spectrum essence emitted, spectrum light extraction in short-range is uneven, causes
The spectrum that plant absorbs from the different relative positions of growth lamp is different.And non-uniform light extraction condition can cause plant difference by
Difference occurs according to position upgrowth situation, the mass uniformity that plant is produced to same batch has an impact.In order to avoid this situation,
Plant growth lamp is in structure design and/or uses operation upper complex, cannot play promotion in plant growth well and make
With.
Usually used another type of plant growth lamp is wideband HID (high-intensity in industry
) or high power T8 fluorescent tubes discharge.But the very power consumption of wideband HID or T8 fluorescent tube uses such plant for a long time
Object growth lamp can waste big energy, very not cost-effective, and its spectrum is non-exchange/change.Therefore, a kind of energy is researched and developed
It is enough to realize that spectrum is precisely controlled and uniform in light emission in plant different stages of growth, and plant growth modulated structure can be simplified, it reduces
The emphasis that the product and/or method of energy consumption are studied at this field.
Quantum dot (quantum dot, QD) or micro-nano fluorescence powder (micron/nano-phosphor) have unique
Light converting attribute can make light go to low energy from high-energy, and the application on plant growth lamp also has been reported.At present QD or
Fluorescent powder and the integrated of LED are typically that QD or fluorescent powder are added in LED lighting cavities in LED production processes (to be encapsulated in LED
It is interior), but due to LED chip generate heat it is larger, service life of the QD or fluorescent powder that are encapsulated in emitting cavity will because of the golf calorific value, and by
To seriously affecting.
To sum up, in plant growth lamp field, problems with still needs to solve：1) spectrum of plant growth lamp can not be more
It changes/changes to adapt to the vegetables of different growth stages or kind；2) commercial plant growth lamp is due to usually using red-light LED, green
The combination spectrum of light LED, blue-ray LED and white light LEDs, spatial uniformity is poor, and plant is caused to be absorbed not because of position difference
Same spectrum；3) structure design of commercial plant growth lamp and use operate complex；4) wideband HID or the life of fluorescent tube plant
Long lamp very power consumption, without economic advantages；5) QD or fluorescent powder are not grown with the LED plant growth lamp service lifes integrated.
Invention content
Technical problem solved by the invention is to overcome existing plant growth lamp light extraction uneven, can not achieve plant
The spectrum of different stages of growth is precisely controlled, structure design and use complicated for operation and wideband HID or fluorescent tube plant growth
The short defect of the LED plant growth lamp service life of lamp high energy consumption, QD or fluorescent powder, provides a kind of light conversion film (light
Emitting film, LEF) and preparation method thereof and the application on plant growth lamp.The light conversion film of the present invention can change
Spatial distribution makes light extraction have uniform spectrum, enhances optical uniformity, improves plant growth efficiency.The light of the present invention is converted
Film and existing LED technology are integrated, can accurately adjust the specific spectrum of photosynthesis of plant, meet plant variation and different lifes
The spectral color demand in long stage, while the wideband HID or fluorescent lamp that use compared to commercial farming save the energy.And this
The light conversion film of invention plant growth lamp is readily replaceable, excites different light conversion films that spectrum can be realized by single class LED backlight
Switching and adjusting, meet a variety of different needs, and with good stability under hot and humid environment, so that it is facilitated clear
It washes.
It was found by the inventors of the present invention that QD or micro-nano fluorescence powder are integrated with blue-ray LED, absorbable LED sends out photon
Energy, and emit according to the size of QD or the type of micro-nano fluorescence powder the light of different wave length.As a result, plant growth lamp
Send out uniform spectrum.Compared with using the growth lamp system of LED combination at present, light conversion film solves spectrum in difference by according to position
The inhomogenous problem set, while compared with the growth lamp system at present by QD or fluorescent powder packaging in LED, light conversion film uses
Packaged type far from LED light source, is thermally isolated using air layer, efficiently solves what QD or fluorescent powder service life were not grown
Problem.
In the R＆D process of the present invention, inventor is further found that the specific wavelength of plant growth can be by polymerizeing
The QD or different types of fluorescent powders of various sizes are added in object film to realize.The feux rouges of different proportion needed for plant growth and
Blue light can by polymer film be added precise volume QD or fluorescent powder optimize.In addition, to improve light utilization efficiency, into one
Step promotes plant growth efficiency, and the refractive index of polymer is preferably on certain level.
The final present invention solves above-mentioned technical problem by following technical proposals.
The present invention provides a kind of light conversion film, the light conversion film includes light conversion material and polymer support；It is described
Light conversion material includes but not limited to：Quantum dot, inorganic fluorescent powder, or combinations thereof；The polymer support includes polymer nano
Rice fiber mat or thin polymer film；Wherein, it is used as the polymer material refractive index of carrier 1.45 or more；And the light converts material
The weight of material is the 0.3%-11% of the polymer supported body weight.
In the present invention, the launch wavelength of the quantum dot is preferably 500-750nm.The quantum dot is suitably red
Quantum dot and/or green quantum dot.In the present invention, the red quantum dot refers in particular to the quantum that launch wavelength is 600-660nm
Point material, includes but are not limited to：1) main core quantum dot, such as CdSe, CdTe, CdSexTe1-x、InP、InPxAs1-x、
CuInS2；2) using above-mentioned material as the nucleocapsid coating modification material of core, such as CdSe/CdS, CdTe/CdS, CdTe/
CdS/ZnS、CuInS2/ZnS、CdSe/CdS/ZnS；3) graded alloy Liang Dot, such as GA_CdSe/ZnS, GA_InP/ZnS.This
In invention, the green quantum dot refers in particular to the quanta point material that launch wavelength is 500-560nm, includes but are not limited to：1)
Main core quantum dot, such as CdxZn1-xSe、CdxZn1-xTe、CdSexS1-x、InP；2) using above-mentioned material as the nucleocapsid packet of core
Cover modified material, such as CdSe/ZnS, CdxZn1-xSe/ZnS/ZnO、CdTe/ZnS、InP/ZnS、CdSe/ZnS/ZnO；3) terraced
Alloy quantum dot is spent, such as GA_CdSe/ZnS, GA_InP/ZnS.
In the present invention, the size of the quantum dot is suitably 2-15nm, preferably 2-10nm.
In the present invention, the launch wavelength of the inorganic fluorescent powder is preferably 500-750nm.The inorganic fluorescent powder is suitable
Ground is red inorganic fluorescent powder and/or green phosphor fluorescent powder.In the present invention, the red inorganic fluorescent powder refers in particular to transmitted wave
The inorganic fluorescent material of a length of 600-660nm, including but not limited to：1) oxide-based, such as ZnO:Zn、SnO2:Eu、Y2O3:Eu；
2) sulfide-based, such as ZnS:Cu；3) 3) rare earth compound class, such as rare-earth oxide sulfate system, rare earth pomegranate system, rear-earth-doped
Compound.In the present invention, the green phosphor fluorescent powder refers in particular to the inorganic fluorescent material that launch wavelength is 500-560nm, packet
It includes but is not limited to：La(PO4):Ce,Tb、(Ce,Tb)MgAl11O19、(Gd,Ce,Tb)MgB5O10。
In the present invention, when the light conversion material is quantum dot, the weight of the light conversion material can be down to the polymerization
The 0.3% of the weight of object carrier, for example, down to 0.335%, down to 0.4%, down to 0.5%, down to 0.6%, down to 0.7%,
Down to 0.8%, down to 0.9%, down to 1%.When the light conversion material is inorganic fluorescent powder, the weight of the light conversion material
Can be the 5%-11% of the weight of the polymer support, such as 10.3%.The light conversion material is quantum dot and inorganic glimmering
When the compound of light powder, the weight of the light conversion material can be the 0.3%-11% of the weight of the polymer support.
In the present invention, the compound of the light conversion material preferred quantum dots and inorganic fluorescent powder, quantum dot in compound
It can be adjusted according to the different breeding phases of plant with the compound proportion of inorganic fluorescent powder.In a certain embodiment of the present invention
In, the light conversion material is the compound of quantum dot and inorganic fluorescent powder, and quantum dot and inorganic fluorescent powder answers in compound
It is adjusted according to the different breeding phases of plant with ratio, such as, but not limited to, the compound proportion in both plant growth stages
It is 1:3000, the compound proportion in both flowering of plant result stages is 1:1.
In the present invention, the nanofiber mat is usually to be prepared by electrospinning by polymer, the mode of the electrospinning
The mode that solution electrospinning commonly used in the art can be used selects suitable solvent that polymer is dissolved into certain dense
The solution of degree, viscosity, then electrostatic spinning is carried out, the host polymer material wherein used in solution electrospinning can be that this field is conventional
The polymer material used, including but not limited to following material：Nylon 6,6, polyurethane (PU), polybenzimidazoles (PBI), poly- carbon
Acid esters (PC), polymethacrylates (PMMA), polyaniline (PANI), polystyrene (PS), gathers to benzene polyacrylonitrile (PAN)
Dicarboxylic acid ethyl ester (PET), poly- (vinylidene fluoride) (PVDF), polyvinylidene fluoride (PVF), polyvinyl chloride (PVC), poly- (9- second
Alkenyl carbazole) (PVK), polyvinyl acetate (PVAc), or combinations thereof etc..The thickness of the nanofiber mat light conversion film of the present invention
, since the structure of nanofiber mat brings light diffusion, spread powder can need not be added, so as to save into down to 15 μm
This, with its high tenacity and flexibility to realize wider array of utilization.
In the present invention, the thin polymer film includes heat curing copolymer film and UV curable polymer films, the heat
The solidification temperature of curable polymer film is preferably 80-110 DEG C, and hardening time is not particularly limited, and may be, for example, 3-
10min, such as 5min.The host polymer material of the thin polymer film is polymer material commonly used in the art, including
But it is not limited to following material：Epoxy resin, acrylic resin, acrylic modified epoxy resin, silicones, acrylic acid modified poly- ammonia
Ester, urethanes, or combinations thereof etc..The thickness of the polymer light conversion film of the present invention can be 100-160 μm, such as 150 μ
M, although thicker compared to nanofiber mat light conversion film, its water proof heat-proof quality is more excellent.
In the present invention, be used as carrier polymer material 1.45 or more, preferably 1.5 or more.Such as 1.55, with
Light availability is improved, the growth efficiency of plant is promoted.In a certain embodiment of the present invention, the refractive index of the polymer material
It is 1.45, the transmitting brightness of light conversion film is 13.46cd/m2.In another embodiment of the present invention, the polymer material
Refractive index be 1.55, the transmitting brightness of light conversion film is up to 25.67cd/m2。
In the present invention, the light conversion film may also include protective separation film, and the protective separation film can be arranged to be turned in light
A surface of film or upper and lower two surfaces are changed, so that light conversion film keeps better stability under hot and humid environment.Institute
The material for stating protective separation film is protective separation membrane material commonly used in the art, including but not limited to following material：Poly- pair
Phthalic acid ethyl ester (PET), polypropylene (PP), polyethylene (PE) etc..The thickness of the protective separation film is not particularly limited.
In a certain embodiment of the present invention, the light conversion film is made of light conversion material and polymer support.At this
It invents in another embodiment, the light conversion film is by light conversion material and polymer support and setting in light conversion film one
Protective separation film composition on surface or upper and lower two surfaces.
In the present invention, optionally, a diffusion barrier can be also set before the light conversion film, so that light extraction evenly, disappears
Except hot spot and it is other go out optical issue.Herein, " front " is for the light emitting surface of light conversion film.The material of the diffusion barrier
For diffusion membrane material commonly used in the art, including but not limited to following material：Polyethylene terephthalate (PET), poly- first
Base acrylate (PMMA), epoxy resin etc..
The present invention also provides the preparation methods of above-mentioned light conversion film.The preparation method can be according to this field conventional method
Carry out, for example, can according to but be not limited to following method and carry out：By the light conversion material and mixed with polymers, formed luminous compound
Then gained light-emitting composite is coated or reverse mould is on base material, through heat cure or UV film-formings by object；Alternatively, by the light
Transition material coating, spraying or dip-coating are on the polymer nanofiber pad, then low temperature drying.
Wherein, the base material can be base material commonly used in the art, such as PET, PP, PE or other polymeric substrate
Material, as long as it can be as the carrier of film forming.
Wherein, the temperature of the heat cure is preferably 80-110 DEG C.
Wherein, the heat cure or UV cured hardening times are not particularly limited, and may be, for example, 1-10min, such as 2min.
Wherein, the low temperature drying refers generally to 50 DEG C or less drying, such as 20-40 DEG C.The time of the low temperature drying is not
Make particular determination, may be, for example, 5-30min, such as 15min.
Wherein, the light conversion material generally uses in the form of a solution, in favor of coating, reverse mould, spraying, immersion-coating operation.
The solution concentration of light conversion material is not particularly limited, as long as the mixture of light conversion material and polymer can be made in base
Substantially continuous film can be formed on material, or light conversion material can be made uniformly to adhere to i.e. on polymer nanofiber pad
It can.
The present invention also provides application of the above-mentioned light conversion film in plant growth lamp.
In the present invention, the plant growth lamp can be plant growth lamp commonly used in the art, usually can be used as water planting
Growing system, greenhouse cultivation, vertical agricultural and other indoor or outdoors cultivating systems principal light source or secondary light source.
In the present invention, the plant growth lamp is preferably LED plant growth lamp, is more preferably blue-ray LED plant growth
Lamp.When light conversion film is applied to LED plant growth lamp, the light conversion film preferably uses the encapsulation side far from LED light source
Formula is thermally isolated using air layer, to improve the service life of QD or fluorescent powder；More preferably, the light conversion film setting exists
It is 2-3cm on the outside of LED light light-emitting surface and at a distance from LED light surface.
In the present invention, the light conversion film has the downward conversion function of energy, when application can by light from high-energy (compared with shortwave
It is long) it is transformed into low energy (longer wavelength).The light conversion film of the present invention is applied to realize that spectrum is replaced when plant growth lamp, tool
Body can in different time sections, manually or automatically system conversion light conversion film be realized according to plant growing cycle.It only needs in this way
The switching and adjusting of spectrum can be realized in single class LED settings, meets various different needs.The adjustable spectrum is suitable for or favorably
In the different stages of growth of plant, such as 1) sow, 2) plant growth, 3) flowering of plant and 4) fruit growth or it is intended for spy
Fixed growth application.
The present invention also provides a kind of plant growth lamp, the plant growth lamp includes blue LED lamp and is arranged in blue light
Above-mentioned light conversion film on the outside of LED light light-emitting surface.The present invention uses LED as growth lamp, can at least save the power for illumination of half
Cost increases the commercial value of vegetables.
Wherein, the light conversion film is replaceable, including replaces and replace automatically manually, specifically can be according to plant growth
Period is replaced in different time sections, in this way can be in the different stages of growth transformation light source spectrum of plant.Therefore, for a certain
Particular kind of plant can preset growth spectrum, more targeted to plant growth.
When the spectrum of growth lamp can convert, also just It is not necessary to which vegetables are turned to be moved to another from a growing frame
Labor cost is greatly saved in growing frame.And common plant growth lamp is at least needed using blue red LED light-configuration modes to reach
Light requirement is composed, and needs to carry out using different LED chips by replacing LED lamp or control when conversion spectrum.The present invention
The light conversion film on the outside of blue light LED light source is only needed to change, light source itself is enormously simplified without needing to change using operation.
Moreover, the present invention light conversion film have equally distributed quantum dot and/or fluorescent powder, with only use feux rouges, blue light,
It is compared with the growth lamp of White LED combination, the spectrum generated is in plant difference by uniformly many according to position.
In the present invention, the plant growth lamp may also include film switching device, and the light conversion film is fixed on described thin
In film switching device, wherein the fixed mode is that this field is conventional, such as can attach fixed or be fixed by card slot.Hand
When dynamic replacement light conversion film, light conversion film need to only be extracted out from film switching device.
Preferably, the film switching device is rotatable film switching device, the light conversion film is uniformly or uneven
It is distributed in film switching device surface evenly, only needs rotating thin film switching device that the replacement of light conversion film can be realized in this way, with
Obtain required spectrum.The rotatable film switching device can be rotated along any direction, such as can be rotated in one direction, or
Person rotates in both directions.In a preferred embodiment of the present invention, the rotatable film switching device rotates for drum-shape
Switching device can rotate in an axial direction.In another preferred embodiment of the present invention, the rotatable film switching device is ball
Shape rotating and switching device can rotate axially or radially.Preferably, the plant growth lamp further includes at least one motor, use
In driving the rotatable film switching device, the automatic switchover of light conversion film is realized, to obtain required spectrum.
In the present invention, the quantity of the light conversion film can be selected according to lamps and lanterns size and type.Preferably, the plant
Object growth lamp includes at least four light conversion film, and for the different stages of growth for plant, the growth phase includes but unlimited
In with the next stage：1) sowing, 2) plant growth, 3) flowering of plant and 4) fruit growth.
In the present invention, the shape of the light conversion film can be arbitrary shape, such as strip or round.
In the present invention, the light conversion film is preferably placed in the outside of the blue LED lamp light-emitting surface, the light conversion film
It can be at a distance from the blue LED lamp surface but be not limited to 2-3cm.
In the present invention, the setting angle of the light conversion film need to generally consider following two situations：1) light conversion film itself
There is optical effect layer (with optical coating or pattern), need to be used according to specified setting direction；2) light conversion film is imitated without optics
Layer is answered, the angle of special setting light conversion film is not necessarily to.
In the present invention, the blue LED lamp preferably has emission spectrum peak in 430-470nm, for driving the light
Convert film.
In the present invention, the plant growth lamp further includes preferably a light guide plate, to generate planar light source, the light guide plate
Both sides in the LED light and light conversion film are set.
In the present invention, the light conversion film of the plant growth lamp may be molded as different shape to change light-emitting angle and light extraction
Light shape.
On the basis of common knowledge of the art, above-mentioned each optimum condition can be combined arbitrarily to get each preferable reality of the present invention
Example.
The reagents and materials used in the present invention are commercially available.
The positive effect of the present invention is that：
(1) light conversion film of the invention can change spatial distribution by using long-range quantum dot/micro-nano fluorescence powder, make
Light extraction is same spectrum, enhances optical uniformity, improves plant growth efficiency.
(2) light conversion film of the invention is with good stability under hot and humid environment.
(3) light conversion film of the present invention and existing LED technology are integrated, can accurately adjusts the tool of photosynthesis of plant
Body spectrum adapts to the plant of different cultivars and growth phase, and there is no need to turn to be moved to another from a growing frame by plant
Growing frame, is greatly saved labor cost, while the wideband HID or fluorescent lamp that use compared to commercial farming save energy
Source.
(4) plant growth lamp of the invention is compared to commercially available feux rouges, the plant growth lamp spectrum of blue light, white light LED combination
Evenly, hot spot and other luminous problems can be effectively eliminated, and simplifies the structure design of plant growth lamp, reduces system
Complexity, only with single blue light LED light source, without needing the R/G/B/W of different proportion (red as common plant growth lamp
Light/green/blue/white light) LED light.
(5) light conversion film of the invention also may be molded as different shape, to change light-emitting angle and light extraction light shape, avoid hindering
The eyes of evil operator, can also be such that exposed area is more uniformly distributed.
Description of the drawings
Fig. 1 is the film switching device schematic diagram replaced manually in embodiment 4, and (a) is dimensional structure diagram, is (b) to bow
View is (c) front view, is (d) left view.
Fig. 2 is that light conversion film uses 6 axial-rotation film switching device schematic diagrames replaced automatically, (a) in embodiment 5
For dimensional structure diagram, it is (b) axial cross section structure schematic diagram, is (c) radial vertical section structure schematic diagram, (d) is axis
To vertical section structure schematic diagram.
Fig. 3 is the radial vertical profile that light conversion film uses 4 axial-rotation film switching devices replaced automatically in embodiment 5
Face structural schematic diagram.
Fig. 4 is that light conversion film uses 3 ball shape rotary film switching device schematic diagrames replaced automatically, (a) in embodiment 6
For dimensional structure diagram, it is (b) left view, is (c) front view, be (d) rearview.
Fig. 5 is the structure of the ball shape rotary film switching device of different light conversion film quantity replaced automatically in embodiment 6
Schematic diagram, wherein the structure shown in (a)-(b) includes 4 light conversion films, and (c) the middle structure shown includes that 5 light are converted
Film.
Fig. 6 is the light transfer process figure of light conversion film of the present invention.
Fig. 7 a are with the spectrum of the white LED light source irradiation present invention.
Fig. 7 b are with the spectrum of the blue light LED light source irradiation present invention.
Fig. 8 a are the light distribution curve under plane PET film.
Fig. 8 b are the light distribution curve under PET conical membranes.
Fig. 8 c are the light distribution curve under PET hemisphere films.
Fig. 8 d are the light distribution curve under PET semicolumn films.
Fig. 8 e are the light distribution curve under incidence surface cord light-emitting surface hemispherical PET film.
Fig. 9 is that the light conversion film of the embodiment of the present invention 1 toasts the luminescence generated by light figure of 1000h under high temperature (40 DEG C) environment
Spectrum.
Figure 10 a and Figure 10 b are respectively that the light conversion film of the embodiment of the present invention 2 toasts 500h under high temperature (85 DEG C) environment
Colour gamut trend chart and brightness change tendency chart；Figure 10 c be the embodiment of the present invention 2 light conversion film high temperature and humidity (65 DEG C,
95% humidity) under baking 500h brightness and colour gamut trend chart.
Figure 11 is the test result figure of plant growth lamp light spectrum uniformity of the present invention.
Specific implementation mode
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies in a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to commodity
Specification selects.
Raw material information involved in following embodiments：
Red quantum dot is purchased from the CdSe/CdS quantum dots that Hong Kong Nano and Advanced Materials Institute Ltd. provides, hair
Ejected wave a length of 640-660nm, size 2-15nm；
Green quantum dot is purchased from the GA_InP/ZnS quantum dots that Hong Kong Nano and Advanced Materials Institute Ltd. provides,
Launch wavelength is 525-550nm, size 2-15nm；
Red inorganic fluorescent powder is provided by Intematix companies, launch wavelength 650nm；
Silicones is provided purchased from Dowcorning companies184；
UV solidified glues are purchased from 3491 that Loctite companies provide；
Polymer nanofiber pad is purchased from the Kynoar that Solvay provides.
Embodiment 1
A kind of light conversion film, including light conversion material and the thin polymer film as carrier, wherein light conversion material is amount
The compound of son point and inorganic fluorescent powder, thin polymer film are 1.5 ± 0.1 by refractive index184 silicones
It is prepared.
The preparation method of the light conversion film is as follows：3ml CdSe/CdS red quantum dots solution (is dissolved in chloroform, 10mg/
ML) with 1g red inorganic fluorescent powders be uniformly mixed, gained mixed solution again with 10g184 silicones mix,
It forms light-emitting composite, is then coated in PET base material, heat cure (80 DEG C, 5 minutes) to obtain the final product.
Embodiment 2
A kind of light conversion film, including light conversion material, the thin polymer film as carrier and upper layer and lower layer protective separation
Film.Wherein, light conversion material is composite quantum dot, and polymer is the UV solidified glues that refractive index is 1.48.
The preparation method of the light conversion film is as follows：By 0.89ml GA_InP/ZnS greens quantum dot solution (be dissolved in chloroform,
10mg/mL) it is uniformly mixed with 0.1189ml CdSe/CdS red quantum dots solution (being dissolved in chloroform, 10mg/mL)；By obtained quantity
Son point solution and the mixing of 2gUV solidified glues, form light-emitting composite, are then coated on PET protective separation films, through press mold at
Shape, UV cure to obtain；The surrounding of light conversion film is packaged later.
Embodiment 3
A kind of light conversion film, including light conversion material, polymer nanofiber pad and the upper layer and lower layer guarantor as carrier
Protect isolation film.Wherein, light conversion material is composite quantum dot, and polymer nanofiber pad is Kynoar, and refractive index is
1.42。
The preparation method of the light conversion film is as follows：By 0.89ml GA_InP/ZnS greens quantum dot solution (be dissolved in chloroform,
10mg/mL) it is uniformly mixed with 0.1189g CdSe/CdS red quantum dots solution (being dissolved in chloroform, 10mg/mL)；By gained quantum
The coating of point solution, spraying or dip-coating on 20 × 40mm polyvinylidene fluoride nanometer fiber mats, then low temperature drying (40 DEG C,
15min)；Nanofiber luminescent layer is sealed between PP protective separation films with thermosetting fluid sealant.
Embodiment 4
A kind of plant growth lamp, including a blue-ray LED strip light and the item that is arranged on the outside of blue-ray LED strip light light-emitting surface
Shape light conversion film, light conversion film are about 2-3cm at a distance from blue LED lamp surface, and light conversion film is fixed on film by card slot
In switching device, when replacing light conversion film manually, light conversion film need to only be extracted out from card slot, manually film switching dress
It is dimensional structure diagram that schematic diagram, which is set, for details, reference can be made to Fig. 1, (a), is (b) vertical view, is (c) front view, is (d) left view
Figure.Wherein, light conversion film can be the light conversion film of any description of the present invention, and quantity can be selected according to actual conditions.Blue-ray LED
Lamp has emission spectrum peak in 430-470nm, for driving light conversion film.
Embodiment 5
A kind of plant growth lamp, including a blue-ray LED strip light and be arranged on the outside of blue-ray LED strip light light-emitting surface 6
A strip light conversion film, 6 light conversion films are placed on the outside of blue-ray LED strip light, are about 2- at a distance from blue LED lamp surface
3cm；6 light conversion films are fixedly attached on drum-shape rotating and switching device, and roller can be rotated along long axis direction, only need to revolve in this way
The replacement of light conversion film can be realized in tumbler cylinder；The plant growth lamp further includes a motor, for the rotation switching of driving drum shape
Device realizes the automatic switchover of light conversion film, to obtain required spectrum.Automatic axial-rotation film switching device schematic diagram tool
Body can be found in Fig. 2, and (a) is dimensional structure diagram, be (b) axial cross section structure schematic diagram, be (c) radial vertical section structure
Schematic diagram is (d) axial vertical section structure schematic diagram, in wherein Fig. 2 (c) mark of light conversion film 1-6 only for convenience of description, and
The sequence of light conversion film is not restricted.
Wherein, for light conversion film 1 for sowing, light conversion film 2 is used for plant growth, and light conversion film 3-4 is used for flowering of plant,
Light conversion film 5-6 is used for fruit growth, and blue LED lamp has emission spectrum peak in 430-470nm, for driving light conversion film；
In the growth phase of beginning, light conversion film 1 will be used to sow, after a certain period of time, such as after 1-2 weeks growth phase, growth lamp
Photosystem will be switched to light conversion film 2 by motor, be used for the plant growth stage；In this stage, light conversion film 2 will keep 2-
4 weeks to complete entire growth course；If plant can bloom, growth lamp system will further switch to light conversion film 3-4, with
It provides and adapts to the plant growth stage spectrum；Post flowering, it is possible to a result stage can be undergone, at this moment light conversion film 5-6 will be born
Duty is completed all stage, and provides the spectrum for being more suitable for growth.
In whole process, light conversion film preset program automatic switchover according to plant growth phase change, to complete to plant
The entire growth course of object.And light conversion film is also disposable, and specific kind of plants certain so also can be by specific
Growth spectrum growth.
Those skilled in the art can also be specifically chosen light conversion film according to lamps and lanterns size, floristics, plant growth stage
Quantity, wherein automatic axial rotating thin film switching device can make simple change, such as 4 light conversion films according to the present embodiment,
For the following different stages of growth for plant：1) sowing, 2) plant growth, 3) flowering of plant and 4) fruit growth, should be from
The radial vertical section structure schematic diagram of dynamic rotating thin film switching device is referring to Fig. 3.
Embodiment 6
A kind of plant growth lamp, including a blue-ray LED strip light and set on the outside of blue-ray LED strip light light-emitting surface 3
A round light conversion film；3 light conversion films are fixedly attached in ball shape rotary switching device, can both axially and radially two
Direction rotates；The plant growth lamp further includes a motor, for driving ball shape rotary switching device, realizes the automatic of light conversion film
Switching, to obtain required spectrum.Automatic ball shape rotary film switching device schematic diagram is three-dimensional tie for details, reference can be made to Fig. 4, (a)
Structure schematic diagram is (b) left view, is (c) front view, is (d) rearview, wherein Fig. 4 (b) and light conversion film 1-3 in 4 (d)
Mark only for convenience of description, is not restricted the sequence of light conversion film.
Wherein, light conversion film 1 is used for plant growth, and light conversion film 2 is used for flowering of plant, and light conversion film 3 is given birth to for fruit
Long, blue LED lamp has emission spectrum peak in 430-470nm, for driving light conversion film.In whole process, plant growth light
Spectrum automatically switches with the variation in plant growth stage.
Those skilled in the art can also be specifically chosen the quantity of light conversion film according to lamps and lanterns size and type, in addition to above-mentioned example
Outside 3 light conversion films lifted, such as can also be 4 light conversion films, 5 light conversion films, automatic spherical rotating thin film switching dress
Simple change can be made according to the present embodiment by setting, and for details, reference can be made to the structural schematic diagrams of Fig. 5 (a)-(c).
Effect example 1
The light transfer process figure of light conversion film of the present invention is referring to Fig. 6, and light conversion film absorbs white light or blue light LED light source is sent out
The energy of photon re-emits the light of different colours according to the type of the size of quantum dot or micro-nano fluorescence powder.Fig. 7 a and 7b
Respectively go out spectrogram with what white light LEDs and blue light LED light source irradiation 1 light conversion film of the embodiment of the present invention obtained.It can from figure
To see, light source is emitted by light conversion film, can obtain uniform luminescent spectrum, is produced so as to avoid point light source light extraction
The problem of third contact of a total solar or lunar eclipse spot and spectrum unevenness.The effect of embodiment 2-3 is suitable with embodiment 1.
Effect example 2
The light conversion film of the present invention can be that variously-shaped, of the invention light conversion film is also moulded using micron stamping technique
At different shape, to change light-emitting angle and light extraction light shape, the eyes of injury operator are avoided, while light extraction being made to be more uniformly distributed,
Referring specifically to attached drawing 8a-8e.
As shown in Figure 8 a, light source rounded four dissipates under common PET, and by changing the different shape on PET, it can be right
Light shape is controlled.If using conical pattern, convergence effect can be carried out to light shape, reinforce intermediate light intensity.And hemisphere
Shape and semi-cylindrical pattern can play the role of light shape intermediate convergence, to limit light-emitting angle.And incidence surface cord
The pattern of light-emitting surface hemisphere can obtain bat shaped laser spot, and area of illumination light distribution is made to be more uniformly distributed.This can adjust and adapt to
Different planting environments and position.Compared to single PET diffusion barriers, light conversion film of the invention can change and adjust LED
Light extraction light shape, enhances the uniformity of light spectrum, by controlling the pattern of diffusion barrier to realize accurately to regulate and control light shape, carries
The growth efficiency of high plant facilitates the design for aesthetic of planting and the flexibility of plantation.
Effect example 3
The light conversion film of the present invention has excellent stability under hot and humid environment, can work normally.
The light conversion film of the embodiment of the present invention 1 is placed under 40 DEG C of high temperature to brightness after toasting 1000h does not have significant change, becomes
In stabilization, referring specifically to Fig. 9.
The light conversion film of the embodiment of the present invention 2 is placed under 85 DEG C of high temperature to brightness after toasting 500h does not have downward trend, and
And stablize (referring to Figure 10 a, Figure 10 b), brightness and colour gamut without the light conversion film of protective film decline 50%.
Meanwhile the light conversion film of the embodiment of the present invention 2 has also carried out 65 DEG C, 95% humidity, the test of 500h.By 500h
Test, the brightness of light conversion film declines in stable trend after 12%, and colour gamut declines 15% and stable trend is also presented, and has
Body can be found in attached drawing 10c.
Effect example 4
Test plant growth lamp of the present invention different location light spectrum uniformity, specifically apart from blue-ray LED item
Seven different locations below shape lamp at 30cm measure the spectrum of gained, as a result as shown in figure 11, it can be seen that seven different positions
It is extremely uniform to set measurement gained spectrum.
Claims (10)
1. a kind of plant growth lamp, which is characterized in that the plant growth lamp includes blue LED lamp and is arranged in the blue light
Light conversion film on the outside of LED light light-emitting surface.
2. plant growth lamp as described in claim 1, which is characterized in that the plant growth lamp further includes film switching dress
It sets, the light conversion film is fixed in the film switching device；Optionally, the fixed mode is to attach fixed or pass through
Card slot is fixed.
3. plant growth lamp as claimed in claim 2, which is characterized in that the film switching device is that rotatable film is cut
Changing device, the light conversion film are distributed uniformly or non-uniformly in film switching device surface.
4. plant growth lamp as claimed in claim 3, which is characterized in that the rotatable film switching device is set as edge
Any direction rotates；
Optionally, the rotatable film switching device is set as rotating in one direction, or rotates in both directions.
5. plant growth lamp as claimed in claim 4, which is characterized in that the rotatable film switching device is drum-shape
Rotating and switching device, the drum-shape rotating and switching device are set as rotating in an axial direction；
Alternatively, the rotatable film switching device is ball shape rotary switching device, the ball shape rotary switching device setting
To rotate axially or radially.
6. plant growth lamp as described in claim 1, which is characterized in that the light conversion film is placed in the blue LED lamp and goes out
On the outside of smooth surface, and it is 2-3cm at a distance from the blue LED lamp surface；
And/or the plant growth lamp includes light conversion film described at least four；
And/or the blue LED lamp has emission spectrum peak in 430-470nm；
And/or the plant growth lamp further includes light guide plate, the light guide plate setting turns in the blue LED lamp and the light
Change the both sides of film.
7. plant growth lamp as claimed in any one of claims 1 to 6, which is characterized in that the plant growth lamp further includes at least
1 motor, for driving the rotatable film switching device.
8. plant growth lamp as described in claim 1, which is characterized in that the light conversion film includes light conversion material and polymerization
Object carrier；The light conversion material is quantum dot and/or inorganic fluorescent powder；The polymer support is polymer nanofiber pad
Or thin polymer film；Wherein, it is used as the refractive index of the polymer material of the polymer support 1.45 or more；And the light turns
The weight of conversion materials is the 0.3%-11% of the weight of the polymer support.
9. plant growth lamp as claimed in claim 8, which is characterized in that the quantum dot is red quantum dot and/or green
Quantum dot；Optionally, the red quantum dot is selected from CdSe, CdTe, CdSexTe1-x、InP、InPxAs1-x、CuInS2、CdSe/
CdS、CdTe/CdS、CdTe/CdS/ZnS、CuInS2In/ZnS, CdSe/CdS/ZnS, GA_CdSe/ZnS and GA_InP/ZnS
It is one or more；The green quantum is clicked from CdxZn1-xSe、CdxZn1-xTe、CdSexS1-x、InP、CdSe/ZnS、CdxZn1- xOne kind or more in Se/ZnS/ZnO, CdTe/ZnS, InP/ZnS, CdSe/ZnS/ZnO, GA_CdSe/ZnS and GA_InP/ZnS
Kind；
And/or the inorganic fluorescent powder is red inorganic fluorescent powder and/or green phosphor fluorescent powder；
And/or the polymer nanofiber pad is prepared by polymer by electrospinning；The electrospinning preferably uses solution
The mode of electrospinning；Optionally, the host polymer material used in the solution electrospinning is selected from nylon 6,6, polyurethane, polyphenyl simultaneously
Imidazoles, makrolon, polyacrylonitrile, polymethacrylates, polyaniline, polystyrene, polyethylene terephthalate, it is poly- (partially
Difluoroethylene), it is polyvinylidene fluoride, polyvinyl chloride, one or more in poly- (9- vinyl carbazoles) and polyvinyl acetate；
And/or the thin polymer film is heat curing copolymer film or UV curable polymer films；The heat curing copolymer
The solidification temperature of film is preferably 80-110 DEG C；Optionally, the host polymer material of the thin polymer film is selected from epoxy
In resin, acrylic resin, acrylic modified epoxy resin, silicones, acrylic acid modified polyurethane and urethanes
It is one or more.
10. plant growth lamp as claimed in claim 8 or 9, which is characterized in that the light conversion material is quantum dot or quantum
When the compound of point and inorganic fluorescent powder, the weight of the light conversion material is the 0.3%- of the weight of the polymer support
11%；When the light conversion material is inorganic fluorescent powder, the weight of the light conversion material is the weight of the polymer support
5%-11%；
And/or the size of the quantum dot is 2-15nm；
And/or the light conversion film further includes protective separation film, one in the light conversion film is arranged in the protective separation film
Surface or upper and lower two surfaces.
Applications Claiming Priority (2)
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|---|---|---|---|
| US201662495879P | 2016-09-28 | 2016-09-28 | |
| US62/495,879 | 2016-09-28 |
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| CN109716964A (en) * | 2019-02-26 | 2019-05-07 | 罗定铨镁太阳能科技有限公司 | A kind of vegetable cultivation system of tunable optical |
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