CN108916675A - A kind of side entering type plant light source of no light guide plate - Google Patents
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- 150000001875 compounds Chemical class 0.000 claims abstract description 15
- 238000009792 diffusion process Methods 0.000 claims description 15
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 description 23
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
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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
- F21V5/00—Refractors for light sources
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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
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
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- 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]
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- 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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Abstract
一种无导光板的侧入式植物光源，包括外壳、扩散板、组合反光结构、LED灯、漫光反射板，扩散板安装在外壳的下端开口处，漫光反射板安装于外壳内的顶部，组合反光结构安装于外壳内的两端，LED灯安装于组合反光结构的底部，组合反光结构为复合抛物面反光杯。本发明具有出射光混合均匀、且光效高、光亮度高等优点。本发明属于植物光源技术领域。
A side-entry plant light source without a light guide plate, including a housing, a diffuser plate, a combined reflective structure, LED lights, and a diffuse reflection plate. The diffuser plate is installed at the lower opening of the housing, and the diffuse reflection plate is installed on the top of the housing , the combined reflective structure is installed at both ends of the shell, the LED lamp is installed at the bottom of the combined reflective structure, and the combined reflective structure is a compound parabolic reflector cup. The invention has the advantages of uniform mixing of emitted light, high light efficiency, high brightness and the like. The invention belongs to the technical field of plant light sources.
Description
技术领域technical field
本发明属于植物光源技术领域，尤其涉及一种无导光板的侧入式植物光源。The invention belongs to the technical field of plant light sources, in particular to a side-entry plant light source without a light guide plate.
背景技术Background technique
人口的急剧增加与耕地面积的日益减少为植物工厂的兴起提供了条件，植物工厂是利用高科技打造的现代农业可持续发展的生产系统，通过控制环境如温度、湿度、光照、无机物与有机物的配比来为植物生长提供必要的条件，从而达到缩短植物生长周期，提高生产效率的目的，是未来农业发展的方向。光照环境是植物生长的关键要素之一，可以直接影响植物生长发育过程和化学物质积累，此外，光照在植物保鲜方面应用也越加广泛，这使得植物照明成为研究热点之一，相应的，开发性能优良的植物照明光源显得尤为重要。LED作为最近几年兴起的第三代照明光源，在植物照明上具有三大优势。第一，植物进行光合作用吸收的光主要是波长为610-720nm的红橙光以及波长为400-510nm的蓝紫光，LED可以发出植物所需要的单色光光谱；第二，LED光谱具有可调性，可以根据不同植物在不同生长阶段对光的需求，调节LED的光质比，获得复合光谱，实现精准给光；第三，LED体积小，节能，光电转化效率高，可以紧凑排列，提高空间利用率。The sharp increase in population and the decreasing area of arable land have provided conditions for the rise of plant factories. Plant factories are modern agricultural sustainable development production systems built with high technology. By controlling the environment such as temperature, humidity, light, inorganic and organic matter To provide the necessary conditions for plant growth, so as to shorten the plant growth cycle and improve production efficiency, is the direction of future agricultural development. The light environment is one of the key elements of plant growth, which can directly affect the growth and development of plants and the accumulation of chemical substances. In addition, light is widely used in plant preservation, which makes plant lighting one of the research hotspots. Correspondingly, the development Plant lighting sources with excellent performance are particularly important. As the third-generation lighting source that has emerged in recent years, LED has three major advantages in plant lighting. First, the light absorbed by plants for photosynthesis is mainly red-orange light with a wavelength of 610-720nm and blue-violet light with a wavelength of 400-510nm. LEDs can emit the monochromatic light spectrum required by plants; Tonality can adjust the light quality ratio of LEDs according to the light requirements of different plants at different growth stages, obtain composite spectra, and achieve precise light supply; third, LEDs are small in size, energy-saving, high in photoelectric conversion efficiency, and can be arranged in a compact manner. Improve space utilization.
市场上已经出现了多种类型的LED植物光源，但是现有的LED植物照明灯有一定的缺陷，如植物照明灯具中一般将红蓝灯珠进行简单的阵列排布，但没有进行二次光学设计，由于光线没有足够的距离进行耦合，低光照均匀性会导致近距离受照面出现红蓝光斑，导致同一批次的植物的生长光环境不一，植物的生长周期与品质就会有较大差异。为了使得光照均匀性更好，侧入式植物光源会在灯具内加入导光板，从而使光线在导光板内部多次反射达到出光均匀的目的，然而在照度较均匀的灯具中的导光板往往较为厚重，并且由于光线在导光板内被吸收，导致出光效率低下，且灯具较为笨重，造价成本高。Many types of LED plant light sources have appeared on the market, but the existing LED plant lighting has certain defects. For example, in plant lighting fixtures, the red and blue lamp beads are generally arranged in a simple array, but there is no secondary optical Design, because the light does not have enough distance for coupling, the low uniformity of light will lead to red and blue light spots on the illuminated surface at close range, resulting in different growth light environments for the same batch of plants, and the growth cycle and quality of plants will be greatly different. difference. In order to make the illumination uniformity better, the side-type plant light source will add a light guide plate in the lamp, so that the light can be reflected multiple times inside the light guide plate to achieve the purpose of uniform light output. However, the light guide plate in the lamp with more uniform illumination is often more Thick and heavy, and because the light is absorbed in the light guide plate, the light output efficiency is low, and the lamp is relatively bulky, and the cost is high.
发明内容Contents of the invention
针对上述问题，本发明提供一种出光效率高的无导光板的侧入式植物光源，它还觉有结构简单、轻质、亮度高、出光均匀等优点。In view of the above problems, the present invention provides a side-entry plant light source without a light guide plate with high light extraction efficiency, which also has the advantages of simple structure, light weight, high brightness, and uniform light output.
一种无导光板的侧入式植物光源，包括外壳、扩散板、组合反光结构、LED灯、漫光反射板，扩散板安装在外壳的下端开口处，漫光反射板安装于外壳内的顶部，组合反光结构安装于外壳内的两端，LED灯安装于组合反光结构的底部，组合反光结构为复合抛物面反光杯。采用此结构，LED灯发射的光通过复合抛物面反光杯进行多角度的散射后，反射光掠射到扩散板从而射出灯具，只有一小部分反射至漫光反射板并被漫光反射板吸收，因此大部分光掠射到扩散板，从而出射光混合均匀，且光效高、光亮度高。A side-entry plant light source without a light guide plate, including a housing, a diffuser plate, a combined reflective structure, LED lights, and a diffuse reflection plate. The diffuser plate is installed at the lower opening of the housing, and the diffuse reflection plate is installed on the top of the housing. , the combined reflective structure is installed at both ends of the shell, the LED lights are installed at the bottom of the combined reflective structure, and the combined reflective structure is a compound parabolic reflector cup. With this structure, the light emitted by the LED lamp is scattered at multiple angles by the compound parabolic reflector cup, and the reflected light hits the diffuser plate to exit the lamp, and only a small part is reflected to the diffuse reflector and absorbed by the diffuse reflector. Therefore, most of the light hits the diffuser plate, so that the emitted light is mixed evenly, and the light efficiency and brightness are high.
优选的，组合反光结构还包括反射器，反射器呈管状，反射器的直径和复合抛物面反光杯的开口处的直径相同。采用此结构，由于反射的管道加长，反射的路程加长，小角度光线也被反射至扩散板，因此更少的光反射至漫光反射板，更多的光反射至扩散板，从而光效更高、光亮度更高。Preferably, the combined reflective structure further includes a reflector, which is in the shape of a tube, and the diameter of the reflector is the same as the diameter of the opening of the compound parabolic reflective cup. With this structure, since the reflection pipe is lengthened, the reflection path is lengthened, and the small-angle light is also reflected to the diffuser plate, so less light is reflected to the diffuse reflector, and more light is reflected to the diffuser plate, so that the light effect is better. High, higher brightness.
优选的，组合反光结构的开口向下倾斜。采用此结构，由于开口向下倾斜，原本反射至漫光反射板的光被组合反光结构挡住，更少的光反射至漫光反射板，更多的光反射至扩散板，从而光效更高、光亮度更高。Preferably, the opening of the composite reflective structure is inclined downward. With this structure, due to the downward slope of the opening, the light originally reflected to the diffuse reflector is blocked by the combined reflective structure, less light is reflected to the diffuse reflector, and more light is reflected to the diffuser, resulting in higher light efficiency , Higher brightness.
优选的，扩散板的上下表面均具有若干连续的棱柱，且上表面的棱柱的底边边长较下表面的棱柱的底边边长小，扩散板的上、下表面的棱柱的高度一致。采用此结构，避免由于掠射而产生严重的菲涅尔反射现象，提升光出射效果、光效率、光亮度。Preferably, both the upper and lower surfaces of the diffusion plate have several continuous prisms, and the length of the base of the prisms on the upper surface is shorter than that of the prisms on the lower surface, and the heights of the prisms on the upper and lower surfaces of the diffusion plate are the same. Adopting this structure avoids serious Fresnel reflection phenomenon caused by grazing, and improves the light output effect, light efficiency, and brightness.
优选的，棱柱为正三棱柱。采用此结构，掠射至扩散板的光反射更少，出射光更多，光效高。Preferably, the prism is a regular triangular prism. With this structure, the reflection of light grazing to the diffusion plate is less, more outgoing light and high light efficiency.
优选的，扩散板采用PMMA材质制成。采用此结构，材质轻便、耐热耐用。Preferably, the diffusion plate is made of PMMA material. With this structure, the material is light, heat-resistant and durable.
优选的，LED灯包括红色LED灯和蓝色LED灯，红色LED灯和蓝色LED灯交叉排布，且相邻两灯之间的距离相同。采用此结构，红蓝光源交叉分布有利于光线在出光面上叠加混合，使灯具出光效果更均匀。Preferably, the LED lamps include red LED lamps and blue LED lamps, and the red LED lamps and blue LED lamps are arranged crosswise, and the distance between two adjacent lamps is the same. With this structure, the cross distribution of red and blue light sources is conducive to the superposition and mixing of light on the light-emitting surface, so that the light-emitting effect of the lamp is more uniform.
优选的，漫光反射板包括板体和漫反射膜，漫反射膜粘贴于板体内壁上。采用此结构，制作简单，漫反射效果好。Preferably, the diffuse reflection plate includes a plate body and a diffuse reflection film, and the diffuse reflection film is pasted on the inner wall of the plate. With this structure, the fabrication is simple and the diffuse reflection effect is good.
本发明的有益效果：本发明通过将LED灯安装于复合抛物面反光杯，LED灯发射的光通过复合抛物面反光杯进行多角度的散射后，反射光掠射到扩散板从而射出灯具，并在复合抛物面反光杯侧面接管状的反射器，进而能使得原本一小部分反射至漫光反射板的小角度光也掠射至扩散板，因此绝大部分光掠射到扩散板，从而出射光混合更均匀，且光效率高、光亮度高；本发明中的扩散板的上下表面均具有若干连续的棱柱，因此能避免由于掠射而产生严重的菲涅尔反射现象，从而提升光出射效果、光效率、光亮度；本发明中LED灯包括红色LED灯和蓝色LED灯，红色LED灯和蓝色LED灯交叉排布，且相邻两灯之间的距离相同，由于红蓝光源交叉分布有利于光线在出光面上叠加混合，因此使灯具出光效果更均匀。Beneficial effects of the present invention: In the present invention, by installing the LED lamp on the compound parabolic reflector cup, the light emitted by the LED lamp is scattered at multiple angles by the compound parabola reflector cup, and the reflected light is grazing onto the diffuser plate to emit the lamp, and then the light emitted by the compound parabola reflector The side of the parabolic reflector is connected to the tubular reflector, so that a small part of the small-angle light reflected to the diffuse reflector is also grazing to the diffuser, so most of the light is grazing to the diffuser, so that the outgoing light is more mixed. Uniform, high light efficiency and high brightness; the upper and lower surfaces of the diffusion plate in the present invention have several continuous prisms, so it can avoid serious Fresnel reflection phenomenon due to grazing, thereby improving the light output effect, light Efficiency, luminance; LED lamp comprises red LED lamp and blue LED lamp among the present invention, and red LED lamp and blue LED lamp are arranged crosswise, and the distance between adjacent two lamps is the same, because red and blue light source cross distribution has It is conducive to the superimposition and mixing of light on the light-emitting surface, so that the light-emitting effect of the lamp is more uniform.
附图说明Description of drawings
图1是一种无导光板的侧入式植物光源的剖面示意图。Fig. 1 is a schematic cross-sectional view of a side-entry plant light source without a light guide plate.
图2是本发明LED灯的排列关系示意图。Fig. 2 is a schematic diagram of the arrangement relationship of the LED lamps of the present invention.
图3是复合抛物线反光杯的结构示意图。Fig. 3 is a structural schematic diagram of a compound parabolic reflector.
图4是反射器的结构示意图。Fig. 4 is a schematic structural view of the reflector.
图5是组合反光结构的剖面示意图。Fig. 5 is a schematic cross-sectional view of the combined reflective structure.
图6是LED灯、组合反射结构、漫光反射板、扩散板之间的位置关系图。Fig. 6 is a positional relationship diagram among the LED lamp, the combined reflection structure, the diffuse reflection plate, and the diffuser plate.
图7是扩散板的剖面图。Fig. 7 is a sectional view of a diffuser plate.
其中，1为LED灯，2为组合反光结构，3为扩散板，4为漫光反射板，5为外壳，6为模拟的混光光线，7为复合抛物线反光杯，8为反射器，9为红色LED灯，10为蓝色LED灯。Among them, 1 is the LED light, 2 is the combined reflective structure, 3 is the diffusion plate, 4 is the diffuse reflection plate, 5 is the shell, 6 is the simulated mixed light, 7 is the compound parabolic reflector, 8 is the reflector, 9 10 is a red LED light, and 10 is a blue LED light.
具体实施方式Detailed ways
下面结合附图对本发明做进一步的具体说明。The present invention will be further described in detail below in conjunction with the accompanying drawings.
为叙述方便，现对下文所说的方位说明如下：下文所说的上下方向与图1本身的上下方向一致。For the convenience of description, the directions mentioned below are described as follows: the up and down directions mentioned below are consistent with the up and down directions in Figure 1 itself.
如图1、图2所示，为本发明的一种无导光板的侧入式植物光源，包括外壳、扩散板、组合反光结构、LED灯、漫光反射板，扩散板安装在外壳的下端开口处，扩散板为出光面，漫光反射板安装于外壳内的顶部，组合反光结构安装于外壳内的两端，LED灯安装于组合反光结构的底部。反光杯与管状反射器组合成组合反光结构。As shown in Figure 1 and Figure 2, it is a side-entry plant light source without a light guide plate of the present invention, including a housing, a diffusion plate, a combined reflective structure, LED lights, and a diffuse reflection plate, and the diffusion plate is installed at the lower end of the housing At the opening, the diffusion plate is the light-emitting surface, the diffuse reflection plate is installed on the top of the shell, the combined reflective structure is installed on both ends of the shell, and the LED lights are installed on the bottom of the combined reflective structure. The reflective cup is combined with the tubular reflector to form a combined reflective structure.
图1为一种无导光板的侧入式植物光源的剖面示意图，整体形状近似为长方形，并显示出了各部件的构成以及模拟的混光光线。Figure 1 is a schematic cross-sectional view of a side-entry plant light source without a light guide plate. The overall shape is approximately rectangular, and it shows the composition of each component and the simulated mixed light.
图2为LED灯排布的结构示意图，LED灯放在组合反光结构的底部。如图2，长方形代表红色LED灯，圆形代表蓝色LED灯，红蓝LED灯分布在灯具的左右两侧，并等间距的交叉排布，红蓝LED灯交叉分布有利于光线在出光面上叠加混合，使灯具出光效果更均匀。Fig. 2 is a structural schematic diagram of the arrangement of LED lights, and the LED lights are placed at the bottom of the combined reflective structure. As shown in Figure 2, the rectangle represents the red LED light, and the circle represents the blue LED light. The red and blue LED lights are distributed on the left and right sides of the lamp, and are arranged at equal intervals. The cross distribution of the red and blue LED lights is conducive to the light on the light emitting surface. Overlay and mix to make the lighting effect of the lamp more uniform.
图3是复合抛物面反光杯(cpc)。图4是呈管状的反射器，复合抛物面反光杯的开口处的直径与反射器的直径一致，反射器接于复合抛物面反光杯形成为组合反光结构，对光线进行反射，加入管状反射器之后，双重反射的反射组合结构可以反射LED灯小角度光线，获得窄长的出射光，进而获得更大的掠射光斑。Figure 3 is a composite parabolic reflector (cpc). Figure 4 is a tubular reflector. The diameter of the opening of the compound parabolic reflector cup is consistent with the diameter of the reflector. The reflector is connected to the compound parabolic reflector cup to form a combined reflective structure to reflect light. After adding the tubular reflector, The double-reflection reflective combination structure can reflect the small-angle light of the LED lamp to obtain a narrow and long outgoing light, and then obtain a larger grazing spot.
图5是复合抛物面反光杯与反射器组合结构的剖面图，LED灯发出的发散光束，经复合抛物面反光杯会聚并掠射在出光面板上，再由双面棱柱状扩散板消弱菲涅尔反射效应射出灯具。Figure 5 is a cross-sectional view of the combined structure of the compound parabolic reflector and the reflector. The divergent beam emitted by the LED lamp is converged by the compound parabolic reflector and grazing on the light-emitting panel, and then the Fresnel is weakened by the double-sided prismatic diffuser. The reflection effect shoots out of the light fixture.
图6是LED灯、组合反光结构、漫光反射板、扩散板之间的位置关系图，组合反光结构与漫光反射板、扩散板并不是呈水平层状排布，反光组合结构的开口稍向下倾斜，且倾斜角度要根据灯具具体尺寸进行调整。Figure 6 is a positional diagram of the LED lamp, combined reflective structure, diffuse reflector, and diffusion plate. The combined reflective structure, diffuse reflector, and diffuser are not arranged in horizontal layers, and the opening of the reflective combined structure is slightly Tilt downward, and the tilt angle should be adjusted according to the specific size of the lamp.
图7是扩散板的剖面图，如果光线与出光面夹角过小，在出射时会产生严重的菲涅尔反射，为了避免由于掠射而产生严重的菲涅尔反射现象，将具有双面棱柱的扩散板作为出光面板。本实施例中，扩散板的上下表面的棱柱均为三棱柱，并且扩散板的下表面的棱柱的三角形底边大于扩散板的上表面的棱柱的三角形底边，扩散板的上、下表面的棱柱的高度一致，可以减少上述现象，提高出光效率。Figure 7 is a cross-sectional view of the diffusion plate. If the angle between the light and the light-emitting surface is too small, severe Fresnel reflection will occur when it exits. In order to avoid serious Fresnel reflection due to grazing, it will have double-sided The prism diffuser serves as the light emitting panel. In this embodiment, the prisms on the upper and lower surfaces of the diffuser plate are all triangular prisms, and the triangular base of the prisms on the lower surface of the diffuser plate is larger than the triangular base of the prisms on the upper surface of the diffuser plate, and the upper and lower surfaces of the diffuser plate The height of the prisms is consistent, which can reduce the above phenomenon and improve the light extraction efficiency.
漫光反射板的漫反射区可通过多种方法制作，本实施例中在板体内壁上直接贴上一层漫反射膜。也可以在制作板体的时候通过一体化直接加工出各种光学图案。The diffuse reflection area of the diffuse reflection plate can be made by various methods. In this embodiment, a layer of diffuse reflection film is directly pasted on the inner wall of the plate. Various optical patterns can also be directly processed through integration when making the board body.
扩散板优先采用PMMA材质，加工方式不限于传统的注塑加工工艺。The diffusion plate is preferably made of PMMA material, and the processing method is not limited to the traditional injection molding process.
上述实施例为发明较佳的实施方式，但本发明的实施方式并不受上述实施例的限制，其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The above-mentioned embodiment is a preferred embodiment of the invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention , all should be equivalent replacement methods, and are all included in the protection scope of the present invention.
Claims (8)
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Application publication date: 20181130 |