WO2013170710A1 - Led light guide plate and manufacturing method therefor - Google Patents

Led light guide plate and manufacturing method therefor Download PDF

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Publication number
WO2013170710A1
WO2013170710A1 PCT/CN2013/075151 CN2013075151W WO2013170710A1 WO 2013170710 A1 WO2013170710 A1 WO 2013170710A1 CN 2013075151 W CN2013075151 W CN 2013075151W WO 2013170710 A1 WO2013170710 A1 WO 2013170710A1
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Prior art keywords
light guide
led light
guide plate
manufacturing
powder
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PCT/CN2013/075151
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French (fr)
Chinese (zh)
Inventor
杨振安
Original Assignee
Yang Chen-An
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Publication of WO2013170710A1 publication Critical patent/WO2013170710A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • 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]

Definitions

  • the present invention relates to a lighting device, and more particularly to an LED light guiding plate and a method of manufacturing the same.
  • LED lamps have the advantages of low power, high brightness, soft lighting, small size and long service life. They are an efficient, energy-saving and environmentally-friendly light source. They have been widely used in various fields and are the key source of light development in the future.
  • LED light guide plates have been widely used in various places in the form of light bars, and their versatile shapes are used to display colorful decorative effects.
  • the existing LED packaging process uses phosphors and silica gel or epoxy resin to be evenly mixed, coated on a transparent glass column or plastic body, and the existing LED book light bar uses an LED point light source, which emits light by a It consists of an extremely bright light-emitting point.
  • the LED light strip of this structure is more glaring and uncomfortable, and has high manufacturing cost and short service life, which does not achieve heat dissipation and affects health and Waste energy.
  • Phosphor and silica gel or epoxy resin are mixed to achieve the astigmatism effect of the LED strip.
  • the light decay or aging comes from two aspects: one is the aging of the LED after long time use; the other is the phosphor is LED
  • the quantum efficiency attenuation caused by heat dissipation, how to prevent the influence of LED light strips in the light guiding process has become an important technical problem.
  • the present invention discloses an LED light guide plate whose raw material composition is a reflective powder, a diffusing agent and a high molecular polymer, and the mass ratio of the reflective powder and the diffusing agent is 4:2 ⁇ 1.
  • the high molecular polymer is acryl or polycarbonate.
  • the reflective powder consists of a crystalline powder having a retroreflective effect.
  • the reflective powder is one or more of diamond powder, crystal powder or quartz powder.
  • the present invention discloses a method for manufacturing a LED light guide plate, which comprises the following steps:
  • the LED light guide plate is formed by molding a mixture of the extruded reflective powder, the diffusing agent and the high molecular polymer.
  • the high molecular polymer particles have a particle size ranging from 1 to 5000 m.
  • the reflective powder has a particle size of no greater than 8 ⁇ .
  • the stirring time is 20 to 30 minutes.
  • the molding machine has a control temperature of 170 to 240 °C.
  • the LED light guide plate is shaped as a flat, spherical or curved panel as required by other luminaire designs.
  • the LED light guide plate of the present invention and the manufacturing method thereof can uniformly disperse the reflective powder to each part of the LED light guide plate, so that the light emitted by the point light source is scattered in various directions under the reflection of the reflective powder, so that the LED light guide plate is
  • the illumination angle range is greater than 240°.
  • the light intensity is softer, and a lighter function is achieved by using a smaller number of LEDs, which has an energy-saving effect.
  • the raw material composition of the LED light guide plate of the present invention is a reflective powder, a diffusing agent and a high molecular polymer, and the mass ratio of the reflective powder and the diffusing agent is 4: 2-1, the mass of the high molecular polymer is not limited, and the reflective
  • the powder is composed of a crystal powder having a retroreflective effect, and the reflective powder is one or more of diamond powder, crystal powder or quartz powder, and the high molecular polymer is acrylic or polycarbonate.
  • the invention also provides a method for manufacturing a LED light guide plate, and the specific steps are as follows:
  • the high molecular polymer pellet raw materials are heated and dried at a temperature of 60 to 80 ° C, and then naturally cooled, and then the reflective powder and the diffusing agent are mixed with the high molecular polymer pellet raw materials, and uniformly stirred for 20 to 30 minutes;
  • the LED light guide plate is formed by molding a mixture of the extruded reflective powder, the diffusing agent and the high molecular polymer, and the LED light guide plate is shaped into a flat surface, a spherical surface or a curved panel required for other lamps.
  • the LED light guide plate is simple to manufacture and can be manufactured on a large scale
  • the LED light guide plate is integrally formed, and the reflective powder is evenly dispersed to various parts of the LED light guide plate, so that the light emitted by the point light source is scattered in various directions under the reflection of the reflective powder inside the LED light guide plate, so that the LED light guide plate is irradiated.
  • the angle range is greater than 240°;
  • the LED light guide plate uses acrylic or polycarbonate as the light transmissive material, which makes the LED light guide plate have excellent transparency, excellent weather resistance, and adaptability to the natural environment, even after prolonged exposure, wind and rain.
  • the leaching does not change the performance; the anti-aging performance is good, and it can be used safely outdoors; the processing performance is good.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Planar Illumination Modules (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

An LED light guide plate and a manufacturing method therefor, the composition of the light guide plate being reflective powders, a dispersant and a macromolecule polymer. The macromolecule polymer is acrylic or polycarbonate. The manufacturing method comprises the steps of: proportionally weighing a certain mass of reflective powders and dispersant, uniformly mixing them into a macromolecule polymer; mixing and melting same in a forming machine and uniformly extruding same; and manufacturing a light guide plate with a certain shape by a forming treatment. The LED light guide plate and the manufacturing method therefor scatter the light emitted from a point light source in various directions under the reflection of reflective powders by uniformly dispersing the reflective powders across each part of the LED light guide plate, and the irradiation angle range of the LED light guide plate is greater than 240°; meanwhile, after the light emitted from the point light source is subjected to multiple reflections of the reflective powders, the light intensity is relatively dim, and the lighting function is achieved using a smaller number of LEDs, thus having an energy-saving effect.

Description

LED导光板及其制造方法 技术领域  LED light guide plate and manufacturing method thereof
本发明涉及照明装置， 尤其是涉及一种 LED导光板及其制造方法。  The present invention relates to a lighting device, and more particularly to an LED light guiding plate and a method of manufacturing the same.
背景技术 Background technique
由于 LED 灯具有功率小、 亮度高、 灯光柔和、 体积小、 使用寿命长等优点， 是一种高 效、 节能和环保的光源， 已经在各个领域得到广泛的应用， 是未来重点发展的光源。  LED lamps have the advantages of low power, high brightness, soft lighting, small size and long service life. They are an efficient, energy-saving and environmentally-friendly light source. They have been widely used in various fields and are the key source of light development in the future.
目前， LED导光板以灯条的形式已经说广泛应用于各种场所， 并利用其多变的造型来展现 绚丽多彩的装饰效果。 现有的 LED 封装工艺采用荧光粉和硅胶或者环氧树脂混合均匀后， 涂敷在透明玻璃柱或塑胶体上， 而且现有的 LED书灯条是采用 LED点光源， 其发出的光线由 一个一个极亮的发光点组成， 这种结构的 LED 灯条， 其发出来的光线比较刺眼， 给人不舒 服的感觉， 而且制造成本高、 使用寿命短， 达不到散热效果， 同时影响健康及浪费能源。  At present, LED light guide plates have been widely used in various places in the form of light bars, and their versatile shapes are used to display colorful decorative effects. The existing LED packaging process uses phosphors and silica gel or epoxy resin to be evenly mixed, coated on a transparent glass column or plastic body, and the existing LED book light bar uses an LED point light source, which emits light by a It consists of an extremely bright light-emitting point. The LED light strip of this structure is more glaring and uncomfortable, and has high manufacturing cost and short service life, which does not achieve heat dissipation and affects health and Waste energy.
采用荧光粉和硅胶或者环氧树脂混合的方式来达成 LED 灯条的散光效果， 其光衰或者 说老化来自于两个方面： 一是 LED长时间使用后自身的老化； 二是荧光粉受 LED散热造成 的量子效率衰减， 如何防止 LED灯条在导光过程中造成的影响成为重要技术问题。  Phosphor and silica gel or epoxy resin are mixed to achieve the astigmatism effect of the LED strip. The light decay or aging comes from two aspects: one is the aging of the LED after long time use; the other is the phosphor is LED The quantum efficiency attenuation caused by heat dissipation, how to prevent the influence of LED light strips in the light guiding process has become an important technical problem.
发明内容 Summary of the invention
基于此， 有必要针对上述背景技术存在的问题， 提供一种导光光线均匀柔和、 能产生节 能效果的 LED导光板及其制造方法。  Based on this, it is necessary to provide an LED light guide plate which is uniform and soft in light guiding light and capable of producing energy saving effects, and a manufacturing method thereof, in view of the problems of the above-mentioned background art.
为实现上述目的， 本发明公开了一种 LED 导光板， 其原料组成为反光粉、 扩散剂及高 分子聚合物， 反光粉和扩散剂的质量比为 4: 2~1。  In order to achieve the above object, the present invention discloses an LED light guide plate whose raw material composition is a reflective powder, a diffusing agent and a high molecular polymer, and the mass ratio of the reflective powder and the diffusing agent is 4:2~1.
在其中一个实施例中， 所述高分子聚合物为亚克力或聚碳酸酯。  In one embodiment, the high molecular polymer is acryl or polycarbonate.
在其中一个实施例中， 所述反光粉由具有反光效果的晶体粉组成。  In one embodiment, the reflective powder consists of a crystalline powder having a retroreflective effect.
在其中一个实施例中， 所述反光粉为钻石粉、 水晶粉或石英粉中的一种或多种。  In one embodiment, the reflective powder is one or more of diamond powder, crystal powder or quartz powder.
为实现上述目的， 本发明公开了一种 LED导光板的制造方法， 其包括以下步骤： In order to achieve the above object, the present invention discloses a method for manufacturing a LED light guide plate, which comprises the following steps:
( 1 )、 根据需要取一定量的高分子聚合物颗粒原料， 并按比例分别称量一定质量的反光粉和 扩散剂； (1) taking a certain amount of high molecular polymer particle raw materials as needed, and weighing a certain amount of reflective powder and diffusing agent according to the ratio;
(2)、 将反光粉和扩散剂与高分子聚合物颗粒原料进行混合， 均匀搅拌；  (2) mixing the reflective powder and the diffusing agent with the high molecular polymer particle raw material, and uniformly stirring;
(3)、 将包含高分子聚合物颗粒、 反光粉及扩散剂的混合物加入到成型机中， 设定成型机的 控制温度， 使带有反光粉及扩散剂的熔融状态下的高分子聚合物均匀挤出；  (3) Adding a mixture containing polymer particles, a reflective powder and a diffusing agent to a molding machine, setting a controlled temperature of the molding machine, and a polymer in a molten state with a reflective powder and a diffusing agent. Uniform extrusion
(4)、 将挤出的反光粉、 扩散剂及高分子聚合物的混合物通过成型处理制成 LED导光板。 在其中一个实施例中， 所述高分子聚合物颗粒的粒径范围为 l~5000 m。 (4) The LED light guide plate is formed by molding a mixture of the extruded reflective powder, the diffusing agent and the high molecular polymer. In one embodiment, the high molecular polymer particles have a particle size ranging from 1 to 5000 m.
在其中一个实施例中， 所述反光粉的粒径不大于 8 μ ηι。  In one embodiment, the reflective powder has a particle size of no greater than 8 μηη.
在其中一个实施例中， 所述步骤 （2) 中， 搅拌时间为 20~30min。  In one embodiment, in the step (2), the stirring time is 20 to 30 minutes.
在其中一个实施例中， 所述成型机的控制温度为 170~240°C。  In one embodiment, the molding machine has a control temperature of 170 to 240 °C.
在其中一个实施例中， 所述 LED 导光板成型形状为平面、 球面或依其它灯具设计需要 的曲面板。  In one embodiment, the LED light guide plate is shaped as a flat, spherical or curved panel as required by other luminaire designs.
综上所述， 本发明 LED导光板及其制造方法通过将反光粉均匀分散到 LED导光板的各 部位， 这样点光源发出的光线在反光粉的反射下散射到各个方向， 使得 LED 导光板的照射 角度范围大于 240° ； 同时点光源发出的光线经过反光粉的多次反射后， 光线强度较为柔 和， 利用较少数量的 LED达成照明功能， 具有节能效果。  In summary, the LED light guide plate of the present invention and the manufacturing method thereof can uniformly disperse the reflective powder to each part of the LED light guide plate, so that the light emitted by the point light source is scattered in various directions under the reflection of the reflective powder, so that the LED light guide plate is The illumination angle range is greater than 240°. At the same time, after the light emitted by the point source is reflected by the reflective powder multiple times, the light intensity is softer, and a lighter function is achieved by using a smaller number of LEDs, which has an energy-saving effect.
具体实施方式 detailed description
本发明 LED 导光板的原料组成为反光粉、 扩散剂及高分子聚合物， 所述反光粉和扩散 剂的质量比为 4: 2-1 , 所述高分子聚合物质量不限， 所述反光粉由具有反光效果的晶体粉 组成， 所述反光粉为钻石粉、 水晶粉或石英粉中的一种或多种， 所述高分子聚合物为亚克力 或聚碳酸酯。  The raw material composition of the LED light guide plate of the present invention is a reflective powder, a diffusing agent and a high molecular polymer, and the mass ratio of the reflective powder and the diffusing agent is 4: 2-1, the mass of the high molecular polymer is not limited, and the reflective The powder is composed of a crystal powder having a retroreflective effect, and the reflective powder is one or more of diamond powder, crystal powder or quartz powder, and the high molecular polymer is acrylic or polycarbonate.
本发明还提供了 LED导光板的制造方法， 具体步骤如下：  The invention also provides a method for manufacturing a LED light guide plate, and the specific steps are as follows:
( 1 )、 根据需要取一定量的高分子聚合物颗粒原料， 并按比例分别称量一定质量的反光粉和 扩散剂， 所述高分子聚合物颗粒的粒径范围为 l~5000 m， 所述反光粉的粒径不大于 8 μ m;  (1) taking a certain amount of high molecular polymer particle raw materials as needed, and weighing a certain amount of reflective powder and a diffusing agent according to the ratio, wherein the high molecular polymer particles have a particle size ranging from l to 5000 m, The particle size of the reflective powder is not more than 8 μ m;
(2)、 将高分子聚合物颗粒原料在 60~80°C温度下加热烘干后自然冷却， 再将反光粉和扩散 剂与高分子聚合物颗粒原料进行混合， 均匀搅拌 20~30min;  (2), the high molecular polymer pellet raw materials are heated and dried at a temperature of 60 to 80 ° C, and then naturally cooled, and then the reflective powder and the diffusing agent are mixed with the high molecular polymer pellet raw materials, and uniformly stirred for 20 to 30 minutes;
(3)、 将包含高分子聚合物颗粒、 反光粉及扩散剂的混合物加入到成型机中， 设定成型机的 控制温度为 170~240°C， 使带有反光粉及扩散剂的熔融状态下的高分子聚合物均匀挤出； (3) Adding a mixture containing polymer particles, reflective powder and diffusing agent to the molding machine, setting the control temperature of the molding machine to 170-240 ° C, so that the molten state with the reflective powder and the diffusing agent The lower polymer is uniformly extruded;
(4)、 将挤出的反光粉、 扩散剂及高分子聚合物的混合物通过成型处理制成 LED 导光板， 所述 LED导光板成型形状为平面、 球面或依其它灯具设计需要的曲面板。 (4) The LED light guide plate is formed by molding a mixture of the extruded reflective powder, the diffusing agent and the high molecular polymer, and the LED light guide plate is shaped into a flat surface, a spherical surface or a curved panel required for other lamps.
所述 LED导光板及其制造方法的有益效果为：  The LED light guide plate and the manufacturing method thereof have the following beneficial effects:
首先， LED导光板的制造方法简单， 可大规模制造； First, the LED light guide plate is simple to manufacture and can be manufactured on a large scale;
其次， 该 LED导光板采用一体成型制造， 反光粉均匀分散到 LED导光板的各部位， 这样点 光源发出的光线在 LED导光板内部反光粉的反射下散射到各个方向， 使得 LED导光板的照 射角度范围大于 240° ； 再次， 点光源发出的光线经过 LED 导光板内部反光粉的多次反射后， 光线强度较为柔和， 不再刺眼， 不会产生鬼影现象， 更贴近消费者的使用需求； 同时可以利用较少数量的 LED 达成照明功能， 具有节能效果； Secondly, the LED light guide plate is integrally formed, and the reflective powder is evenly dispersed to various parts of the LED light guide plate, so that the light emitted by the point light source is scattered in various directions under the reflection of the reflective powder inside the LED light guide plate, so that the LED light guide plate is irradiated. The angle range is greater than 240°; Again, after the light from the point source is reflected by the reflective powder inside the LED light guide, the light intensity is softer, no longer glare, no ghosting phenomenon, and closer to the consumer's use requirements; The LED achieves the lighting function and has energy saving effect;
最后， LED导光板采用亚克力或聚碳酸酯作为透光材料， 使得 LED导光板具有极佳的透明 度， 优良的耐候性， 对自然环境的适应性很强， 即使长时间在曝光照射、 风吹雨淋也不会使 性能发生改变； 抗老化性能好， 在室外也能安心使用； 加工性能良好。 Finally, the LED light guide plate uses acrylic or polycarbonate as the light transmissive material, which makes the LED light guide plate have excellent transparency, excellent weather resistance, and adaptability to the natural environment, even after prolonged exposure, wind and rain. The leaching does not change the performance; the anti-aging performance is good, and it can be used safely outdoors; the processing performance is good.
以上所述实施例仅表达了本发明的几种实施方式， 其描述较为具体和详细， 但并不能因 此而理解为对本发明专利范围的限制。 应当指出的是， 对于本领域的普通技术人员来说， 在 不脱离本发明构思的前提下， 还可以做出若干变形和改进， 这些都属于本发明的保护范围。 因此， 本发明专利的保护范围应以所附权利要求为准。  The above-mentioned embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

1. 一种 LED导光板， 其特征在于： 所述 LED导光板原料组成为反光粉、 扩散剂及高分子聚 合物， 反光粉和扩散剂的质量比为 4: 2~1。 A LED light guide plate, characterized in that: the raw material of the LED light guide plate is a reflective powder, a diffusing agent and a polymer, and the mass ratio of the reflective powder to the diffusing agent is 4:2~1.
2. 根据权利要求 1所述的 LED导光板， 其特征在于 ： 所述高分子聚合物为亚克力或聚碳酸 酯。  The LED light guide plate according to claim 1, wherein the polymer is acrylic or polycarbonate.
3. 根据权利要求 1所述的 LED导光板， 其特征在于： 所述反光粉由具有反光效果的晶体粉 组成。 3. The LED light guide according to claim 1, wherein: the reflective powder is composed of a crystal powder having a reflective effect.
4. 根据权利要求 1所述的 LED导光板， 其特征在于： 所述反光粉为钻石粉、 水晶粉或石英 粉中的一种或多种。  The LED light guide plate according to claim 1, wherein the reflective powder is one or more of diamond powder, crystal powder or quartz powder.
5. 一种如权利要求 1~4所述的 LED导光板的制造方法， 其特征在于， 包括以下步骤： ( 1 )、 根据需要取一定量的高分子聚合物颗粒原料， 并按比例分别称量一定质量的反光粉和 扩散剂；  The method for manufacturing an LED light guide plate according to any one of claims 1 to 4, further comprising the steps of: (1) taking a certain amount of high molecular polymer particle raw materials according to requirements, and respectively weighing them according to proportions; a certain amount of reflective powder and diffusing agent;
(2)、 将反光粉和扩散剂与高分子聚合物颗粒原料进行混合， 均匀搅拌；  (2) mixing the reflective powder and the diffusing agent with the high molecular polymer particle raw material, and uniformly stirring;
(3)、 将包含高分子聚合物颗粒、 反光粉及扩散剂的混合物加入到成型机中， 设定成型机的 控制温度， 使带有反光粉及扩散剂的熔融状态下的高分子聚合物均匀挤出；  (3) Adding a mixture containing polymer particles, a reflective powder and a diffusing agent to a molding machine, setting a controlled temperature of the molding machine, and a polymer in a molten state with a reflective powder and a diffusing agent. Uniform extrusion
(4)、 将挤出的反光粉、 扩散剂及高分子聚合物的混合物通过成型处理制成 LED导光板。 (4) A mixture of the extruded reflective powder, the diffusing agent, and the high molecular polymer is formed into a LED light guide plate by molding.
6. 根据权利要求 5所述的 LED导光板的制造方法， 其特征在于： 所述高分子聚合物颗粒的 粒径范围为 l~5000 m。 The method of manufacturing a LED light guide plate according to claim 5, wherein the polymer polymer particles have a particle diameter ranging from 1 to 5000 m.
7. 根据权利要求 5所述的 LED导光板的制造方法， 其特征在于： 所述反光粉的粒径不大于 8 μ m。  The method of manufacturing a LED light guide plate according to claim 5, wherein the reflective powder has a particle diameter of not more than 8 μm.
8. 根据权利要求 5 所述的 LED 导光板的制造方法， 其特征在于： 所述步骤 （2) 中， 搅拌 时间为 20~30min。 The method of manufacturing a LED light guide according to claim 5, wherein in the step (2), the stirring time is 20 to 30 minutes.
9. 根据权利要求 5所述的 LED导光板的制造方法， 其特征在于： 所述成型机的控制温度为 170-240 "C o  9. The method of manufacturing a LED light guide according to claim 5, wherein: the molding machine has a control temperature of 170-240"C o
10. 根据权利要求 5所述的 LED导光板的制造方法， 其特征在于： 所述 LED导光板成型形 状为平面、 球面或依其它灯具设计需要的曲面板。  The method of manufacturing a LED light guide plate according to claim 5, wherein the LED light guide plate is shaped into a flat surface, a spherical surface or a curved panel required for other lamps.
PCT/CN2013/075151 2012-05-17 2013-05-03 Led light guide plate and manufacturing method therefor WO2013170710A1 (en)

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