• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    HORTICULTURE LIGHTING DEVICE; METHOD TO STIMULATE PLANT GROWTH AND BIORRITHM OF A PLANT; LIGHT FIXTURE; AND HORTICULTURE APPLICATION The present invention relates to a lighting device (100) to stimulate plant growth and biorhythm of a plant. The lighting device (100) comprises a solid state light source (102) arranged to emit direct red light that has a wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a length-converting member of wave (106) arranged to receive at least part of said direct red light emitted from said solid-state light source (102), and to convert said received red light into long-red light having a wavelength maximum emission from 700 to 760 nm, preferably 720 to 760 nm.
    公开号:BR112015016408B1
    申请号:R112015016408-0
    申请日:2014-01-07
    公开日:2020-11-10
    发明作者:Paulus Albertus Van Hal；Henricus Marie Peeters；Rob Franciscus Maria Van Elmpt；Rifat Ata Mustafa Hikmet；Martinus Petrus Joseph Peeters；Dirk Veldman；René Theodorus Wegh
    申请人:Philips Lighting Holding B.V.；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to a horticultural lighting device, and a method to stimulate plant growth and biorhythm in a plant. The present invention further relates to a luminaire comprising said horticulture lighting device, and a horticulture application comprising said horticulture lighting device or said luminaire. BACKGROUND OF THE INVENTION
    [002] It is known that photophysiological processes are crucial for plant growth and that these processes are controlled by photopigments, which exhibit absorption spectra strongly dependent on wavelengths. Chlorophyll, for example, absorbs light in the wavelength range of approximately 620 nm to 680 nm, while different forms of phytochrome, reduced phytochrome (Pr) and long red phytochrome (Pfr), which regulate a range of molecular responses and physiological in plants, react to light within wavelength bands centered on red and long red, respectively. The ratio, for example, between absorption by Pr and Pfr controls the physiological processes in plants such as flowering induction, stem elongation, germination, etc.
    [003] To improve the spectral profile of artificial lighting of plants, fluorescent lamps, which are commonly low-discharge mercury vapor discharge lamps with phosphor coating, can be used. These lamps, however, have several disadvantages such as limited effectiveness, contain mercury which is a dangerous agent, have a useful life, are fragile, require high voltage, and emit unwanted infrared light.
    [004] Alternatively, solid-state light sources, such as light-emitting diodes (LEDs), are also currently used for plant lighting, since LEDs have a longer life span, provide greater photon flow efficiency, require less operating voltage, emit narrowband light, and are more flexible when it comes to mounting compared to conventional light sources.
    [005] WO 2010/053341 discloses a phosphorus LED converted for plant cultivation which comprises a semiconductor chip that generates a short wavelength light (blue or close to UV), and a wavelength converter that contains at least one phosphor, which converts said light of short wavelength into light of shorter wavelength due to photoluminescence. The shorter wavelength light contains a long red spectral component with maximum values in the spectral range of about 700 nm to 760 nm, corresponding to the Pf r absorption spectrum.
    [006] For this purpose, long-red light can also be obtained with the use of direct long-red LEDs, which are, for example, based on AlGaAs or AlInGaP semiconductor materials.
    [007] There are, however, problems related to the prior art; LEDs generating red-long light with the use of phosphor conversion from blue light are, for example, due to their inherent large Stokes displacement, not efficient. Direct long red LEDs are also relatively inefficient and, moreover, are not widely available.
    [008] There is therefore a need for abundant artificial light sources that provide more efficient narrow-wavelength band lighting during plant cultivation. SUMMARY OF THE INVENTION
    [009] An objective of the present invention is to solve or at least reduce the problems discussed above. The invention is defined by the claims.
    [010] In particular, according to a first aspect of the invention, a horticultural lighting device is provided. The device comprises a solid state light source arranged to emit direct red light that has a maximum emission wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a wavelength converter member arranged to receive at least less part of the direct red light emitted from the solid-state light source, and to convert the received red light into long-red light that has a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm.
    [011] An advantage of this device is that it uses highly effective direct red LEDs and a low Stokes loss associated with the conversion of red light into red-long light. Direct red LEDs, which emit light with a maximum emission wavelength of, for example, 660 nm, are readily available with very high efficiencies: luminous efficiency or luminous efficiency (WPE) exceeding 50%. Stokes loss for converting 660 nm to 740 nm is only about 10%. As a result, the efficiency of the device of the present invention is greater compared to that of prior art devices. In addition, only one type of wavelength converter member is needed in combination with the solid state light source to generate light emission in the spectral bands of red and long red. The low number of components necessary to achieve the desired light emission is advantageous in view of the easy assembly, low material consumption and reduced price when producing the lighting device according to the present invention. Consequently, the horticulture lighting device provided is efficiently arranged to generate a combination of red and red-long light. This is particularly useful for stimulating plant growth and / or plant biorhythm by reproducing the color change of daylight. Therefore, for example, both reduced phytochrome (Pr) and red-long phytochrome (Pfr) can be influenced efficiently with the use of the supplied lighting device.
    [012] In the context of the present invention, the term "red light" is to be understood as light having energies corresponding to a range of wavelengths from 600 to 680 nm. In a preferred embodiment of the present invention, the wavelength range of red light is narrower, from 640 to 680 nm, to further optimize the efficiency of the lighting device.
    [013] Similarly, the term "long red light" should be understood as a light that has energies corresponding to a range of wavelengths from 700 to 760 nm. In a preferred embodiment of the present invention, the wavelength range of red-long light is narrower, from 720 to 760 nm, to further optimize the efficiency of the lighting device.
    [014] The words direct red light or long red light must be interpreted as red light or long red light generated directly by the solid state light source without any optical processes outside the solid state light source.
    [015] The term "wavelength converter member" means a phosphor material, which has the ability to convert light from a first wavelength band to light from a second wavelength band, the second band being wavelength has Stokes offset in relation to the first wavelength range.
    [016] A phosphorus material is, in the context of the present invention, defined as a material or substance that emits light after excitation in processes of luminescence, fluorescence or phosphorescence.
    [017] According to another embodiment of the present invention, a ratio between the direct red light and the long red light emitted from the horticultural lighting device is defined by adjusting the fraction of the direct red light that falls on the wavelength converter member from the solid state light source. This provides a simple means of adjusting the ratio between direct red light and long red light and therefore influences plant growth and development.
    [018] According to the present invention, the solid-state light source and the wavelength converter member are mounted in a single unit that simplifies the assembly of light sources in arrangements or other configurations that provide efficient lighting for plants .
    [019] The single unit additionally comprises at least one solid-state light source arranged to emit direct red light. This can provide additional freedom to adjust a ratio between direct red light and light to long red light and enhance the light intensity of the red and / or long red spectral components, as desired for improved plant cultivation.
    [020] In accordance with a second aspect of the present invention, a method is provided to stimulate plant growth and biorhythm of a plant, wherein the method comprises the steps of generating direct red light that has a maximum emission wavelength of 600 to 680 nm, preferably 640 to 680 nm, using a solid state light source, receiving at least part of the direct red light into a wavelength converter member, and converting the received light into red light into long-red light that has a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm, with the use of the wavelength converter member, thus allowing to influence plant photomorphogenesis.
    [021] In accordance with a third aspect of the present invention, a luminaire is provided which comprises at least one horticultural lighting device as described here.
    [022] A horticultural lighting device is arranged to generate horticultural light. The term "horticultural light" can, by way of example, refer to light that has a spectral distribution with an intensity of light in a first wavelength selected from the range of 400 to 475 nm and in a second selected wavelength of the 600-800 nm range. This does not imply that the light from the horticulture lighting device, when switched on, will always be bright in both regions. The lighting device can provide light with intensity in only one of the spectral bands, such as blue light or red (long) light, or in different spectral bands. Additionally, due to the fact that the device can comprise a plurality of LEDs, it may be that one or more LEDs generate mainly blue light, while one or more other LEDs can generate mainly red (long) light (see also the text below). The term "selected wavelength of the band" can also include the use of bandwidth emitters, even bandwidth emitters that also emit out of range, although they emit at least one wavelength in said range. This expression can specifically, but not exclusively, include emitters that have a dominant emission wavelength in that range.
    [023] The term "horticulture" refers to the (intensive) cultivation of plants for human use and is very diverse in its activities, incorporating plants for food (fruits, vegetables, mushrooms, culinary herbs) and non-food agricultural crops (flowers , trees and shrubs, peat turf, hops, grapes, medicinal herbs). The term "agricultural crop" is used throughout this document to indicate the horticultural plant that is or has been grown. Plants of the same type grown on a large scale for food, clothing, etc., can be called agricultural crops. An agricultural crop is a non-animal species or variety that is grown for harvesting, such as food, livestock fodder, fuel, or for any other commercial purpose. The term "agricultural culture" can also refer to a plurality of agricultural crops. Horticultural agricultural crops can refer specifically to food agricultural crops (tomatoes, peppers, cucumber and lettuce), as well as plants that support (potentially) such agricultural crops, such as a tomato plant, a pepper plant, a cucumber plant, etc. Horticulture may, in this document, refer in general to, for example, agricultural crop plants and non-agricultural crop plants. Examples of culture are Rice, Wheat, Barley, Oats, Chickpeas, Peas, Cowpeas, Lentils, Chinese Beans (vigna radiata), Indian Beans (Vigna mungo), Soy Beans, Common Beans, Moth beans (Vigna aconitifolia), Flaxseed, Sesame, Chicharo, Suna, Peppers, Eggplant, Tomato, Cucumber, Okra, Peanuts, Potato, Corn, Pearl millet, Rye, Alfalfa, Radish, Cabbage, lettuce, pepper, Sunflower, Sugar beet , Ricino, Red carnation, White carnation, Safflower, Spinach, Onion, Garlic, Turnip, Pumpkin, Musk melon, Watermelon, Cucumber, Pumpkin, Quenafe, Oil palm, Carrot, Coconut, Papaya, Sugar cane, Coffee, Cocoa, Tea, Apple, Pears, Peaches, Cherries, Grapes, Almond, Strawberries, Pineapple, Banana, Cashew, Irish, Cassava, Cara, Rubber, Sorghum, Cotton, Triticale, Guandu and Tobacco. The crops of greatest interest are tomato, cucumber, pepper, lettuce, watermelon, papaya, apple, pear, peach, cherry, grape and strawberry.
    [024] Horticultural agricultural crops can be grown specifically in a greenhouse. Therefore, the invention relates specifically to the application of the device and / or the method in a greenhouse. The device can be arranged between plants, or between future plants, which is called "interlighting". The growth of horticulture on threads, such as tomato plants, can be a specific field of application for interlighting, whose application can be addressed with the present device and method. The device can also be arranged on top of plants or future plants. Specifically, when horticultural agricultural crops are grown in layers on top of each other, artificial lighting is required. The cultivation of agricultural horticultural crops in layers is referred to as "multilayer growth" and can occur in a plant factory. In addition, in multilayer growth, the device and / or method can be applied.
    [025] Therefore, in a fourth aspect according to the present invention, the application of horticulture is provided, specifically selected from the group comprising a greenhouse and a plant factory, in which the application of horticulture further comprises the device of horticultural lighting or the luminaire as described in this document. In one embodiment, this horticulture application comprises a plurality of said luminaires, in which said luminaires are optionally configured to illuminate agricultural crops laterally within said horticulture application. In another modality, the application of horticulture comprises multiple layers for growing agricultural crops in multilayer, and the application of horticulture additionally comprises a plurality of said luminaires, configured to illuminate the plantations in said plurality of layers.
    [026] Especially in greenhouses where horticultural agricultural crops are grown in rows, the side lighting of the agricultural culture can be applied. The expression "side lighting of the agricultural crop" specifically indicates a configuration of the lighting device so that during at least part of the growing process of the agricultural crop, the agricultural crop is illuminated from one side. This does not eliminate top (additional) lighting, but at least the horticultural lighting device according to the invention is configured in such a way that the crop is illuminated from one side of the crop during at least part of the process of agricultural crop growth. Assuming a growth of agricultural crops in rows, at least part of the horticultural lighting device, specifically at least part of its light-emitting surface, can be arranged between the rows of agricultural crops. Therefore, at least part of the horticultural lighting device according to the invention can have a horizontal propagation component and illuminate one or more agricultural crops. An advantage of side lighting is that agricultural crops can be better (more fully) illuminated, energy use is more effective and, therefore, total energy consumption can be reduced, and specifically with the device of the invention, it can be It is possible to select a specific color to satisfy the demand of agricultural culture at a specific stage.
    [027] It should be noted that the invention refers to all possible combinations of the features referred to in the claims. BRIEF DESCRIPTION OF THE DRAWINGS
    [028] This and other aspects of the present invention will now be described in detail, with reference to the accompanying drawings showing the modalities of the invention.
    [029] Figure 1 shows the absorption spectra depending on typical wavelengths of reduced phytochrome (Pr) and red-long phytochrome (Pfr).
    [030] Figure 2 shows a schematic cross-sectional side view of the basic structure of a lighting device according to a currently preferred embodiment of the invention.
    [031] Figure 3 shows a schematic cross-sectional side view of the basic structure of a lighting device according to an embodiment of the invention, which comprises an additional solid state light source.
    [032] Figure 4 illustrates the emission of light according to a modality of the present invention, concerning the excitation of light with the use of a direct red LED to create emission of long red light with the use of a fluorescent dye as a member wavelength converter.
    [033] Figure 5 illustrates a luminaire according to the third aspect of the invention.
    [034] Figures 6 and 7 schematically represent some applications according to the fourth aspect of the invention.
    [035] In Figures 2 and 3 the sizes of the layers and regions are exaggerated for illustrative purposes, therefore, they are provided to illustrate the general structure of a modality of the present invention. DETAILED DESCRIPTION
    [036] The present invention will now be described in more detail from this point in the text with reference to the accompanying drawings, in which some currently preferred embodiments of the invention are shown. This invention can, however, be incorporated in many different forms and should not be interpreted as limited to the modalities presented in this document; instead, these modalities are provided for the purpose of detail and completeness, and fully convey the scope of the invention to one skilled in the art.
    [037] When growing plants, it is desirable to use direct red light and / or long red light. Red light has, for example, an optimal wavelength for plant photosynthesis. The application of long red provides an end-of-day light treatment, which has beneficial effects on plant growth, producing larger stems, which is, for example, important for cut flowers and seedlings, while leaf expansion and increasing growth rates is important for leafy vegetables, etc.
    [038] Different forms of phytochrome, reduced phytochrome (Pr) and red-long phytochrome (Pfr) are involved in and regulate a range of molecular and physiological responses in plants, such as those exemplified above. As can be seen from the absorption spectra dependent on Pr and Pfr wavelengths, see Figure 1, these molecules can react to light within wavelength bands centered on red and long red, respectively. By controlling the ratio between the red and long-red illumination of the plant, it is therefore possible to control, through the photophysiological response of Pr and Pfr, physiological processes in plants such as flowering induction, stem elongation, germination etc.
    [039] A general idea of this invention is to provide an effective method and lighting device to generate light in the long-red-wavelength region of the light spectrum. According to an embodiment of the present invention, this can be done using a solid state light source that emits direct red light together with a wavelength converter member which is arranged to convert said direct red light into said light long red. The small shift in wavelength between red and long-red light has inherently lower Stoke losses, compared to methods using blue light or UV light conversion, allowing more effective plant lighting to be achieved. The low number of components required to achieve the desired light emission is more advantageous in view of the easy assembly, low material consumption and reduced price when producing the light source according to the present invention.
    [040] To facilitate the implementation of a lighting device that is easy to implement in plant cultivation, the solid state light source and the wavelength converter member could additionally be mounted in a single unit.
    [041] Figure 2 shows a schematic cross-sectional side view of the basic structure of a horticultural lighting device 100 according to a currently preferred embodiment of the invention. The lighting device comprises a solid state light source 102 (in this embodiment an LED) in a support 104 arranged to emit direct red light and wavelength converter members 106 arranged to convert said direct red light into long-red light. . According to the embodiment, as shown in Figure 2, said wavelength converter members 106 are dispersed in a host material 108, forming a layer of wavelength converter member 112. Host material 108 can be at least semitransparent for light in the wavelength bands relevant to the present invention. It should be noted that one embodiment, as shown in Figure 2, has the advantage that the wavelength converter members 106 can be located at a distance from the solid state light source 102 thereby reducing thermal contact to the source of solid-state light 102, which could otherwise have a negative effect on the physical properties of the wavelength converter members 106, of the solid-state light source 102, or both. The design additionally provides greater possibilities for customizing the optical properties of the constituent parts in order to improve the light output of the device, by choosing one or more layers of intermediate material 110 separating the wavelength converter member layer 112 and the solid-state light source 102. However, it is also possible within the scope of the present invention to locate at least partially the wavelength converter members directly in the solid-state light source.
    [042] As non-limiting examples, the host material is produced from a transparent polymeric material, for example, acrylic polymers such as polymethyl methacrylate (PMMA), polyesters such as polycarbonate (PC) and polyethylene terephthalate (PET), epoxies, alcohol polyvinyl (PVA), polyurethane, polystyrene, or silicones. Possibly, the wavelength converter member layer consists of particles of the wavelength converter member dispersed in one or more of the aforementioned host materials, which are then incorporated into one or more other host materials chosen from the aforementioned materials.
    [043] Alternatively, the host material can be a glass or ceramic material.
    [044] Alternatively, the wavelength converter member layer can be formed completely by the wavelength converter member itself, for example in the case where the wavelength converter member is an inorganic phosphorus it can be a component shaped ceramic or it can be a single cultured crystal.
    [045] The wavelength converter member layer can, for example, be an independent supporting component, or it can be applied to a substrate by, for example, coating, printing or gluing.
    [046] As a non-limiting example, the layer (s) of intermediate material is / are produced from air, or a transparent material chosen from, for example, silicones or epoxies.
    [047] According to another modality, it is possible to adjust the fraction of said direct red light that falls on said wavelength converter member from said solid state light source. According to this modality the lighting device comprises a solid state light source, a wavelength converter member, and possibly a shielding means. Changing a position of the wavelength converter member, and / or changing a position of said solid-state light source, and / or changing a position of said shielding means, the ratio between direct red and the red-long said can be adjusted. No excess of solid-state light sources is therefore necessary to obtain the desired light output ratio between red and long-red light from the lighting device, according to the invention which improves efficiency, simplifies assembly and further reduces costs. The topic of how to adjust the amount of light emitted from a light source, for example, an LED, which falls on a wavelength converter member is, for example, disclosed in US 2010/0254115 to which reference Is made.
    [048] According to the present invention, as illustrated in Figure 3, the ratio between said direct red light and said long red light could be adjusted, in a single horticulture lighting device 300, in which it comprises at least an additional solid-state light source 302 arranged to emit said direct red light together with the solid-state light source 102 arranged to illuminate the wavelength converter members 106. In that single lighting device unit 300 the ratio between said direct red light and said long-red light is adjusted by independently regulating the intensity of the solid-state light source 102, the latter being arranged to illuminate the wavelength converter members 106, and the source of additional solid state light 302. In this particular modality, although not mandatory, a reflective panel 304 is disposed between the two said light sources to increase the light emission from r of said single lighting device unit 300 and reducing the incidence of light on said wavelength converting members from said additional light source 302. This modality provides additional freedom to adjust the ratio between said red light direct and so-called long-red light and enhance the light intensity of the red and / or long-red spectral components, as desired for improved plant cultivation.
    [049] According to another embodiment of the present invention, the single lighting device unit comprises at least one additional solid state light source arranged to emit blue or white light, in order to further stimulate plant growth.
    [050] The wavelength converter member could comprise a phosphorous material, which should, in the context of the present invention, be understood as a material or substance that emits light after excitation in processes of luminescence, fluorescence or phosphorescence. Below are three different types of exemplified matches that can serve as effective wavelength converter members. It should be noted that the wavelength converter members could be positioned remotely or directly over the solid state light source.
    [051] First, the wavelength converter member could comprise a quantum dot (QD). QDs are small crystals of semiconductor material that generally have a width or diameter of only a few tens of nanometers. They have the advantage that when they are excited by incident light, they emit light in which the wavelength of the light is determined by the size and material of the QD. In addition, they show very narrow emission bands and, therefore, provide saturated colors, in which the light output of a particular color 'can be produced by adapting the material and size of the QDs used. QDs with emission in long red by excitation of red could, for example, be achieved with the use of QDs that comprise a material selected from the group consisting of, but not limited to, QDs of II-VI and III -V, preferably InP, CdTe, CdTe / CdSe core-capsule structures, ternary mixtures such as CdSexTey, or chalcopyrite QDs such as CuxInySe2 or CuxInyS2. QDs can be overcoated with materials from upper prohibited band materials like CdS and ZnS for enhanced emissive properties.
    [052] Second, the wavelength converter member could comprise an inorganic phosphorus, wherein said inorganic phosphorus comprises a material embedded with Cr3 +, preferably a material selected from the group consisting of YtGasOniCr, LaAlOaiCr, and GdtGasOm: Cr, where GdaGasOm: Cr is more preferred since its low energy excitation band is located around 650 nm. Alternatively, phosphors of (Zn, Cd) S: Ag with a high Cd content can be used since they are also known to have emission maximums in the long red.
    [053] Third, the wavelength converter member could comprise a fluorescent dye, wherein said fluorescent dye is preferably a substituted 3,4,9,10-perylene-tetracarboxylbis-benzimidazole (PTCBI) , alkoxy) also called perylene perylene, in which it is a member of the family of dyes emitting red-long, and more preferably 3,4: 9,10-bis (1,2-benzimidazole) -1,6,7 , 12-tetra (4-nonylphenoxy) perylene (sin / anti-isomers). It has been shown that this dye has an absorbance at 550 to 670 nm and to exhibit emission in the range of 650 to 850 nm (M.G. Debije et al, Appl. Optics 50, 163 (2011)). In addition, a quantum yield of 80% has been reported for the dye when in a polycarbonate host material. Bay substitution for perylene perylene is not limited to the 4-nonylphenoxy used in this example, but may be a range of other alkoxyls, including other alkylphenoxis such as 4-tert-octylphenoxy.
    [054] It has been shown, as illustrated in Figure 4, that the use of LEDs that emit a maximum emission wavelength at 620 nm is possible to generate light emission in the wavelength range from 650 to 850 nm with the use of a wavelength that converts the material comprising the fluorescent dye (3,4: 9,10-bis (1,2-benzimidazole) -1,6,7,12-tetra (4-nonylphenoxy) perylene (sin / anti -isomers)) mixed in a host material 1 mm thick of polymethyl methacrylate (PMMA). In this particular modality, the host material containing the wavelength converter member was positioned remotely from the LED.
    [055] The person skilled in the art understands that the present invention is in no way limited to the preferred modalities described above. On the contrary, many modifications and variations are possible in the scope of the attached claims.
    [056] For example, in one embodiment of the present invention, the solid state light source could be an Organic Light Emitting Diode (OLED) or a Laser Diode (LD).
    [057] According to one embodiment, the solid state light source could be arranged to emit light that has a maximum emission wavelength of 620110 nm. According to another embodiment, the solid state light source could be arranged to emit light that has a maximum emission wavelength of 640 110 nm. According to yet another embodiment, the solid-state light source could be arranged to emit light that has a maximum emission wavelength of 660110 nm.
    [058] Figure 5 shows, schematically, a luminaire 400 according to the third aspect of the invention. The luminaire comprises one or more horticultural lighting devices according to the first aspect of the invention.
    [059] Figure 6 represents, schematically, the application of horticulture for the growth of tomatoes, for example. The reference 1000 indicates the application of horticulture, here as an example a greenhouse. The horticultural agricultural crop is indicated with reference 1. Reference 2 indicates the possible fruit (s), tomatoes in this case. The tomato crop is only used as an example to illustrate some aspects. Agricultural crops or tomato plants are arranged in rows. The interdistance of the rows, and therefore of the plants, is indicated with the reference Ll, and can for example be in the range of 1 to 2 meters, as 1.5 meters. The total height from the ground level, indicated with the reference H, can, for example, be in the range of 2 to 4 m, such as about 3 m. The part of that total height that is specifically relevant for horticultural lighting can cover a height Hl, and is in the range of 0.5 aim, and is about a height H2 above the ground level, whose height H2 can be in the range from 0.5 to 1.5 m, specifically about 1 m. The luminaire 500 can specifically address the horticultural agricultural crop at said height H1; however, on the left side a relative high luminaire 500 is shown, for example only. The reference d indicates the distance between the light-emitting surface (s) of the luminaire 500 and the agricultural crop 1. The reference 511 indicates the horticulture light that is generated by the luminaire 500 during operation. The luminaire 500 may comprise a plurality of horticultural lighting devices 100.
    [060] Another modality of horticulture application will be discussed below with reference to Figure 7. Reference 1200 indicates the application of horticulture, here as an example a plant factory that has a plurality of rows of agricultural crops 1. In this modality , the 500 luminaires as described here, are used for multilayer growth. The multiple layers are indicated with the references 1010. In this case, it is beneficial that all horticultural lighting devices 510, during operation, emit the horticultural light 511 in the same direction for the plants. In that case, it may be advantageous to press the horticulture lighting devices 510 between two metal sheets 360. Preferably, the metal sheet on the back of the horticulture lighting device 510 is made diffuse reflective by incorporating a layer containing a white paint based on particles such as TiCg. The advantage is that the light that is reflected by the plant back to the 500 luminaire is recycled.
    [061] Additionally, variations of the presented modalities can be understood and carried out by the person skilled in the art in the practice of the claimed invention, from a study of the drawings, the disclosure and the attached claims. In the claims, the use of the verb "to understand" does not exclude other elements or steps, and the indefinite article "one (a>" does not exclude the presence of a plurality of such elements. The simple fact that certain measures are referred to in different claims mutually dependent does not indicate that a combination of these measures cannot be used to their benefit.
    权利要求:
    Claims (10)
    [0001]
    1. HORTICULTURE LIGHTING DEVICE, comprising a solid state light source (102) arranged to emit direct red light that has a maximum emission wavelength of 600 to 680 nm, preferably 640 to 680 nm, and a limb wavelength converter (106) arranged to receive at least part of said direct red light emitted from said solid-state light source (102), and to convert said received red light into long-red light that has a maximum emission wavelength of 700 to 760 nm, preferably 720 to 760 nm, characterized by the lighting device comprising: an additional solid state light source (302) arranged to emit direct red light, and a reflective panel ( 304) disposed between said light source (102) and said additional solid state light source (302) to reduce the incidence of light on said wavelength converting members from said solid state light source ad (302), wherein said solid-state light source (102), said additional solid-state light source (302), said reflective panel (304) and said wavelength converter member (106 ) are mounted in a single unit, and in which a ratio between said direct red light and said long red light emitted from said lighting device is defined by adjusting the fraction of said direct red light that falls on the said wavelength converter member (106) independently regulating the intensity of the light emitted by said solid-state light source (102) and said additional solid-state light source (302).
    [0002]
    2. HORTICULTURE LIGHTING DEVICE, according to claim 1, characterized in that said wavelength converter member (106) comprises a quantum dot, inorganic phosphorus and / or a fluorescent dye.
    [0003]
    3. HORTICULTURE LIGHTING DEVICE, according to claim 2, characterized by said quantum dot comprising the material selected from the group consisting of quantum dots II-VI and III-V, preferably InP, core-capsule structures CdTe, CdTe / CdSe, ternary mixtures such as CdSexTey, or chalcopyrite quantum dots such as CuxInySe2, or CuxInyS2.
    [0004]
    4. HORTICULTURE LIGHTING DEVICE, according to claim 2, characterized in that said inorganic phosphorus comprises a material imbibed with Cr3 +, preferably a material selected from the group consisting of YjGasOmiCr, LaAlO / iCr, and GdaGasO ^: Cr .
    [0005]
    5. HORTICULTURE LIGHTING DEVICE, according to claim 2, characterized in that said fluorescent dye preferably comprises a substituted 3,4,9,10-perylene-tetracarboxylbis-benzimidazole (for example, alkoxy) also called perylene perylene, being a member of the family of dyes emitting red-long, and more preferably 3,4: 9,10-bis (1,2-benzimidazole) -1,6,7,12-tetra (4-nonylphenoxy) perylene (sin / anti-isomers).
    [0006]
    HORTICULTURE LIGHTING DEVICE, according to any one of claims 1 to 5, characterized in that it comprises at least one additional solid state light source arranged to emit blue or white light.
    [0007]
    7. METHOD FOR STIMULATING PLANT GROWTH AND BIORRITHM OF A PLANT, comprising the steps of: generating direct red light that has a maximum emission wavelength of 600 to 680 nm, preferably 640 to 680 nm, using a solid state light source (102), receiving at least part of said direct red light into a wavelength converter member (106), and converting said received red light into long-red light having a wavelength maximum emission from 700 to 760 nm, preferably 720 to 760 nm, with the use of said wavelength converter member (106), characterized by the method comprising the steps of: generating direct red light that has a wavelength of maximum emission from 600 to 680 nm, preferably 640 to 680 nm, using a solid state light source (302), provide a reflective panel (304) disposed between said solid state light source (102) and said additional solid state light source (302) to reduce the incidence of light on said wavelength converting members (106) from said additional light source (302), in which a ratio between said direct red light and said emitted red-long light is defined by adjusting it if the amount of said direct red light falling on said wavelength converter member (106) independently regulating the intensity of the light emitted by said solid state light source (102) and said additional solid state light source (302).
    [0008]
    METHOD according to claim 7, characterized in that said wavelength converter member comprises a fluorescent dye, wherein said preferred fluorescent dye comprises a 3,4,9,10-perylene-tetracarboxylbis-benzimidazole (PTCBI) substituted (for example, alkoxy) also called perylene perylene, being a member of the family of dyes emitting red-long, and more preferably 3,4: 9,10-bis (1,2-benzimidazole) -1 , 6,7,12-tetra (4-nonylphenoxy) perylene (sin / anti-isomers).
    [0009]
    9. LUMINAIRE (400, 500), characterized by comprising a horticultural lighting device, as defined in any one of claims 1 to 6.
    [0010]
    10. HORTICULTURE APPLICATION (1000, 1200), selected from a group comprising at least a greenhouse and a plant factory, the application of horticulture being characterized by additionally comprising a horticultural lighting device, as defined in any one claims 1 to 6, or a luminaire as defined in claim 9.
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    同族专利:
    公开号 | 公开日
    DK2943056T3|2017-11-06|
    BR112015016408A2|2017-07-11|
    WO2014108825A1|2014-07-17|
    EP2943056A1|2015-11-18|
    RU2015133530A|2017-02-16|
    CN104883872A|2015-09-02|
    US10299441B2|2019-05-28|
    EP2943056B1|2017-08-02|
    RU2667769C2|2018-09-24|
    JP2016504044A|2016-02-12|
    JP6367828B2|2018-08-01|
    US20160000018A1|2016-01-07|
    CN104883872B|2019-08-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5202777A|1991-05-31|1993-04-13|Hughes Aircraft Company|Liquid crystal light value in combination with cathode ray tube containing a far-red emitting phosphor|
    CN1072945A|1991-12-05|1993-06-09|日本曹达株式会社|Material for transformation of wave length for agricultural use|
    US6501091B1|1998-04-01|2002-12-31|Massachusetts Institute Of Technology|Quantum dot white and colored light emitting diodes|
    KR20000018096A|2000-01-11|2000-04-06|김근주|Semiconductor light emitting devices and arrays for plant germination|
    JP4081648B2|2001-11-28|2008-04-30|東芝ライテック株式会社|Lighting device|
    CN100457755C|2003-06-25|2009-02-04|日东电工株式会社|Perylenetetracarboxylic acid dibenzimidazole sulfoderivatives containing oxo-groups in the perylene core which form part of a para-quinoid system of bonds, lyotropic liquid crystal systems and anisotr|
    WO2005075598A1|2004-02-06|2005-08-18|Mitsubishi Chemical Corporation|Light emitting device and lighting device using it, image display unit|
    WO2007125493A2|2006-05-02|2007-11-08|Koninklijke Philips Electronics N.V.|Color-stable phosphor converted led|
    ES2379129T3|2007-06-04|2012-04-23|Koninklijke Philips Electronics N.V.|Lighting system with color adjustment, lamp and luminaire|
    US7547114B2|2007-07-30|2009-06-16|Ylx Corp.|Multicolor illumination device using moving plate with wavelength conversion materials|
    US8877524B2|2008-03-31|2014-11-04|Cree, Inc.|Emission tuning methods and devices fabricated utilizing methods|
    LT5688B|2008-11-07|2010-09-27|Uab "Hortiled"|Phosphor conversion light - emitting diode for meeting photomorphogenetic needs pf plants|
    EP2381495B1|2008-12-19|2017-04-26|Samsung Electronics Co., Ltd.|Light emitting device package|
    TW201039469A|2009-04-20|2010-11-01|Everlight Electronics Co Ltd|Light emitting device and electronic device|
    WO2010134331A1|2009-05-22|2010-11-25|Panasonic Corporation|Semiconductor light-emitting device and light source device using the same|
    US8426871B2|2009-06-19|2013-04-23|Honeywell International Inc.|Phosphor converting IR LEDs|
    US8330373B2|2010-02-15|2012-12-11|Abl Ip Holding Llc|Phosphor-centric control of color characteristic of white light|
    US8395312B2|2010-04-19|2013-03-12|Bridgelux, Inc.|Phosphor converted light source having an additional LED to provide long wavelength light|
    JP5498904B2|2010-09-27|2014-05-21|パナソニック株式会社|Crop cultivation system|
    EP2499900A1|2011-03-17|2012-09-19|Valoya Oy|Method and means for enhancing greenhouse lights|
    JP2013106550A|2011-11-18|2013-06-06|Sharp Corp|Lighting device for growing plant|
    US10448579B2|2012-07-11|2019-10-22|Signify Holding B.V.|Lighting device capable of providing horticulture light and method of illuminating horticulture|CN104869806B|2012-12-21|2019-03-12|飞利浦灯具控股公司|For docking the Horticultural light interface of at least one lighting system|
    CN106062612A|2013-12-31|2016-10-26|迪斯佩尔索拉有限责任公司|Harvesting, transmission, spectral modification and delivery of sunlight to shaded areas of plants|
    CN107251244B|2015-02-23|2019-12-03|亮锐控股有限公司|White emitting phosphor conversion LED with the flux output stable relative to temperature|
    US10784416B2|2016-03-24|2020-09-22|Sharp Kabushiki Kaisha|Light source device and light emitting device|
    JP6481663B2|2016-06-29|2019-03-13|日亜化学工業株式会社|Light emitting device and plant cultivation method|
    CN106211459A|2016-07-28|2016-12-07|厦门桑奈特光电科技有限公司|The biggest a kind of wave band biostimulation device|
    CN106439626A|2016-11-23|2017-02-22|广明源光科技股份有限公司|Plant growth light with blue light chip stimulating fluorescent powder and application of plant growth light|
    KR101730965B1|2016-11-30|2017-04-27|주식회사 쉘파스페이스|Light emitting apparatus having variable wavelengths using quantum dots for plant cultivation|
    US11218644B2|2016-11-30|2022-01-04|Sherpa Space Inc.|Image-based component measurement system using light emitting device that outputs variable wavelength and method thereof, and method of plant cultivation method using the same|
    US10422501B2|2016-12-14|2019-09-24|Ford Global Technologies, Llc|Vehicle lighting assembly|
    EP3570658A4|2017-01-20|2020-10-07|Ostman, Charles Hugo|Light emitting structures|
    DE102017120642A1|2017-09-07|2019-03-07|Osram Opto Semiconductors Gmbh|Light-emitting diode, use of a light-emitting diode, method for operating a light-emitting diode and method for producing a light-emitting diode|
    WO2019146327A1|2018-01-29|2019-08-01|京セラ株式会社|Light emitting device and illumination device|
    SG11202007903UA|2018-03-21|2020-09-29|Mjnn Llc|Vertical grow tower conveyance system for controlled environment agriculture|
    WO2019206937A1|2018-04-26|2019-10-31|Signify Holding B.V.|Bolting control using light with high level of far red|
    WO2020022465A1|2018-07-27|2020-01-30|日亜化学工業株式会社|Illumination device|
    US11187970B2|2018-12-25|2021-11-30|Seiko Epson Corporation|Light source apparatus having side by side light guide and wavelength converter|
    AU2020220235A1|2019-02-14|2021-09-23|Lleaf Pty Ltd|Photoperiodic control of phytochrome with materials|
    JPWO2020241119A1|2019-05-27|2020-12-03|
    EP3855870A1|2020-01-22|2021-07-28|Seoul Semiconductor Europe GmbH|Led light source device|
    法律状态:
    2017-10-17| B25A| Requested transfer of rights approved|Owner name: PHILIPS LIGHTING HOLDING B.V (NL) |
    2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2018-03-20| B06I| Technical and formal requirements: publication cancelled|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |
    2019-06-04| B06T| Formal requirements before examination|
    2019-11-12| B07A| Technical examination (opinion): publication of technical examination (opinion)|
    2020-03-10| B09A| Decision: intention to grant|
    2020-11-10| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/01/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US201361751285P| true| 2013-01-11|2013-01-11|
    US61/751,285|2013-01-11|
    PCT/IB2014/058092|WO2014108825A1|2013-01-11|2014-01-07|A horticulture lighting device and a method to stimulate plant growth and bio-rhythm of a plant|
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