WO2019033632A1 - 面光源用导光罩 - Google Patents

面光源用导光罩 Download PDF

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Publication number
WO2019033632A1
WO2019033632A1 PCT/CN2017/115181 CN2017115181W WO2019033632A1 WO 2019033632 A1 WO2019033632 A1 WO 2019033632A1 CN 2017115181 W CN2017115181 W CN 2017115181W WO 2019033632 A1 WO2019033632 A1 WO 2019033632A1
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Prior art keywords
light source
light
guiding portion
light guide
light guiding
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PCT/CN2017/115181
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English (en)
French (fr)
Inventor
陈志峰
陈婷
陈超
江波
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MEIZHOU JIANGNAN ELECTRIC APPLIANCE CO Ltd
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MEIZHOU JIANGNAN ELECTRIC APPLIANCE CO Ltd
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Publication of WO2019033632A1 publication Critical patent/WO2019033632A1/zh
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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
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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
    • 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 light source assisting device, and more particularly to a light guide cover for a surface light source.
  • LED energy-saving lamps are favored by the people and supported by the country with their remarkable characteristics of energy saving, health, environmental protection and long life.
  • the glare is not well handled, which not only affects the lighting effect, but is also harmful to the human eye.
  • the optical diffuser developed by the company itself, the glare problem was effectively solved, and the lighting effect was further improved.
  • the subsequent research it was found that due to the diffuse reflection effect of the optical diffuser, the back side of the light source also became bright, and this part of the light was wasted, which affected the luminaire to exert its optimal illumination effect.
  • An object of the present invention is to provide a light guide cover for a surface light source which is compact in structure, convenient to install, and has a good use effect, in view of the above-mentioned deficiencies of the prior art.
  • a light guide cover for a surface light source comprising a body, wherein the body is composed of a ring-shaped connecting portion and a light guiding portion having a flared structure, and the connecting portion is sleeved on the outer surface.
  • the inner surface of the light guiding portion is provided with a reflective plating layer or a reflective cover.
  • the light guide opening portion is provided with a protective structure covering the opening portion for waterproofing and dustproof.
  • the protective structure is composed of a first sealing ring, a transparent protective plate and a pressing ring which are disposed on the end surface of the opening of the light guiding portion from the inside to the outside; in the first sealing a first positioning strip is disposed on an end surface of the ring opposite to the light guiding portion, and a mounting groove corresponding to the first positioning strip is disposed on the light guiding portion corresponding to the first positioning strip; the pressing ring passes through the screw and the light guiding Fixed connection.
  • the light guide portion is provided with a counterbore, and the light guide portion is connected to the external substrate through a mounting counterbore through a screw.
  • a second seal ring is interposed between the end surface of the connecting portion and the outer mounting surface, and a second positioning strip is disposed on an end surface of the second seal ring opposite to the connecting portion.
  • a positioning groove adapted to the second positioning strip is disposed on the end surface of the connecting portion corresponding to the second positioning strip.
  • a wire hole is provided in a side wall of the connecting portion.
  • the present invention cooperates with the surface light source through the light guide cover to scatter the surface light source to the light behind the lamp.
  • the front of the re-lighting fixture further enhances the effective use of the light source, so that the light intensity in front of the lamp is further improved.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Figure 2 is a partial enlarged view of the portion A in Figure 1;
  • Figure 3 is a schematic exploded view of Embodiment 1 of the present invention.
  • Figure 4 is a schematic view of the bottom structure of the present invention.
  • Figure 5 is a schematic structural view of Embodiment 2 of the present invention.
  • Figure 6 is a graph showing the light intensity distribution of a non-diffusing plate without a light guide lamp in an experimental example of the present invention
  • Figure 7 is a illuminance distance chart of a non-diffusing plate without a light guide lamp in an experimental example of the present invention.
  • Figure 8 is a graph showing the light intensity distribution of a diffuser without a diffuser with a light guide in the experimental example of the present invention.
  • Figure 9 is a graph showing the illuminance distance of a diffuser without a diffuser with a light guide in the experimental example of the present invention.
  • body 1 connecting portion 2, positioning groove 2a, wire hole 2b, light guiding portion 3, mounting groove 3a, mounting counterbore 3b, reflective plating layer 4, reflective sleeve 5, protective structure 6, first sealing ring 7.
  • a light guide cover for a surface light source of the present invention comprises a body 1 which is composed of a ring-shaped connecting portion 2 and a light guiding portion 3 having a flared structure, and a connecting portion. 2 sets are disposed on the outer periphery of the external surface light source; an angle ⁇ between the inner wall and the vertical surface of the light guiding portion 3 is 10° to 45°, and a height h of the light guiding portion 3 is 20 to 100 mm.
  • the inner surface of the light guiding portion 3 is provided with a reflective plating layer 4, and the light is reflected by the reflective plating layer and is emitted from the opening of the light guiding portion 3.
  • the opening portion of the light guiding portion 3 is provided with a protective structure 6 covering the opening portion for waterproofing and dustproof.
  • the protective structure 6 is composed of a first sealing ring 7 disposed on the end surface of the opening of the light guiding portion 3 from the inside to the outside, a transparent shielding plate 8 and a pressing ring 9; in the first sealing ring 7 and the light guiding portion 3 A first positioning strip 7a is disposed on the opposite end surface, and a mounting groove 3a corresponding to the first positioning strip 7a is disposed on the light guiding portion 3 corresponding to the first positioning strip 7a; the pressing ring 9 is screwed and guided.
  • the light portion 3 is fixedly connected.
  • the transparent protective sheet may preferably be made of tempered glass or a transparent acrylic sheet.
  • a second sealing ring 10 is interposed between the end surface of the connecting portion 2 and the external mounting surface, and a second positioning strip 10a is disposed on the end surface of the second sealing ring 10 opposite to the connecting portion 2, corresponding to the second positioning strip 10a.
  • a positioning groove 2a adapted to the second positioning bar 10a is provided on the end surface of the connecting portion 2.
  • the side wall of the connecting portion 2 A wire hole 2b is arranged on the wire, and a waterproof sealing joint is connected in the wire hole.
  • the light guide portion 3 is provided with a mounting counterbore 3b, and the light guiding portion 3 is connected to the external substrate through the mounting counterbore 3b by screws.
  • the light guide cover of the present invention may be attached to the periphery of the surface light source through the connection portion, and the light source diffusion plate may be selectively installed inside the light guide cover according to the irradiation distance.
  • a combined light source diffusing device of the present invention has the same structure as that of Embodiment 1, except that the light reflecting sleeve 5 is sleeved in the light guiding portion, and the reflective plating layer 4 is not used.
  • This structure has the advantages of convenient processing and high yield. The manner of use and the effect of use are the same as in the first embodiment.
  • the surface light source lamp using the light guide of the present application and the same surface light source lamp not using the light guide cover are subjected to photometric test under the same conditions, and the color temperature of the surface light source lamp is 5000K, power is 30W, the test results are shown in Figure 6-9.
  • the tabulation is as follows:
  • the surface light source with the light guide is irradiated at least 2 meters away from the surface light source without the light guide under approximately the same luminous flux.
  • the surface light source is a non-point light source, and the surface light source is composed of a plurality of point light sources. Most of the point light sources are not in a center position with respect to the light guide cover, so after the light is reflected by the light guide cover, the exit angle and reflection are After the irradiation effect, etc. There are very many uncertain results. However, it can be seen from the above test results that it has an unexpected effect. The light behind the lamp is effectively guided and directed to the front of the lamp, so that the illumination range is effectively delineated and the light intensity is improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种面光源用导光罩，属于照明配件技术领域，包括本体（1），由连接部（2）和呈喇叭形结构的导光部（3）组成；导光部（3）内壁与竖直面之间的夹角α为10°～45°，导光部（3）的高度h为20～100mm。面光源用导光罩的结构紧凑、安装方便且使用效果好，用于面光源的光线引导。

Description

面光源用导光罩 技术领域
本发明涉及一种光源辅助装置，更具体地说，尤其涉及一种面光源用导光罩。
背景技术
LED节能灯作为一种新型的照明光源，以节能、健康、环保及寿命长的显著特点，受到了广大人民的青睐以及国家的大力扶持。LED灯在实际使用过程中，要解决散热和眩光两个常见的问题，散热不好，就会大幅缩短灯芯的寿命。眩光处理不好，不仅影响照明效果，而且对人眼有害。前期，在采用申请自行研发的光学扩散罩后，眩光问题得到有效解决，照明效果得到进一步提高。但是在后续的研究中发现，由于光学扩散罩的漫反射效果，使得光源背面也变得明亮起来，这部分光线被浪费掉了，从而影响了灯具发挥其最优的照射效果。
发明内容
本发明的目的在于针对上述现有技术的不足，提供一种结构紧凑、安装方便且使用效果好的面光源用导光罩。
本发明的技术方案是这样实现的：一种面光源用导光罩，包括本体，其中所述本体由呈环形的连接部和呈喇叭形结构的导光部组成，连接部套设在外部面光源外围；所述导光部内壁与竖直面之间的夹角α为10°～45°，所述导光部的高度h为20～100mm。
上述的一种面光源用导光罩中，所述导光部内表面设有反光电镀层或套设有反光套。
上述的一种面光源用导光罩中，所述导光部开口部设有覆盖开口部用于防水防尘的防护结构。
上述的一种面光源用导光罩中，所述防护结构由由内至外依序设置在导光部开口部端面的第一密封圈、透明防护板和压紧环组成；在第一密封圈与导光部相对的端面上设有第一定位条，在第一定位条对应的导光部上设有与第一定位条相适应的安装槽；所述压紧环通过螺丝与导光部固定连接。
上述的一种面光源用导光罩中，所述导光部上设有安装沉孔，导光部通过螺丝穿过安装沉孔与外部基板连接。
上述的一种面光源用导光罩中，所述连接部端面与外部安装面之间夹设有第二密封圈，在第二密封圈与连接部相对的端面上设有第二定位条，在第二定位条对应的连接部端面上设有与第二定位条相适应的定位槽。
上述的一种面光源用导光罩中，所述连接部侧壁上设有过线孔。
本发明采用上述结构后，通过导光罩与面光源配合，将面光源散射至灯具后面的光线收 集再导向灯具前面，进一步提高光源的有效利用，使得灯具前方的光强进一步提高。
附图说明
下面结合附图中的实施例对本发明作进一步的详细说明，但并不构成对本发明的任何限制。
图1是本发明实施例1的结构示意图；
图2是图1中A处的局部放大示意图；
图3是本发明实施例1的分解结构示意图；
图4是本发明的底部结构示意图；
图5是本发明实施例2的结构示意图；
图6是本发明实验例中无扩散板无导光罩灯具的光强分布曲线图；
图7是本发明实验例中无扩散板无导光罩灯具的照度距离图表；
图8是本发明实验例中无扩散板带导光罩远距灯具的光强分布曲线图；
图9是本发明实验例中无扩散板带导光罩远距灯具的照度距离图表；
图中：本体1、连接部2、定位槽2a、过线孔2b、导光部3、安装槽3a、安装沉孔3b、反光电镀层4、反光套5、防护结构6、第一密封圈7、第一定位条7a、透明防护板8、压紧环9、第二密封圈10、第二定位条10a。
具体实施方式
实施例1
参阅图1至图4所示，本发明的一种面光源用导光罩，包括本体1，所述本体1由呈环形的连接部2和呈喇叭形结构的导光部3组成，连接部2套设在外部面光源外围；所述导光部3内壁与竖直面之间的夹角α为10°～45°，所述导光部3的高度h为20～100mm。在本实施例中，所述导光部3内表面设有反光电镀层4，通过反光电镀层使光线进行反射并从导光部3开口部射出。
同时，在导光部3开口部设有覆盖开口部用于防水防尘的防护结构6。所述防护结构6由由内至外依序设置在导光部3开口部端面的第一密封圈7、透明防护板8和压紧环9组成；在第一密封圈7与导光部3相对的端面上设有第一定位条7a，在第一定位条7a对应的导光部3上设有与第一定位条7a相适应的安装槽3a；所述压紧环9通过螺丝与导光部3固定连接。透明防护板可以优选采用钢化玻璃或透明亚克力板。
在连接部2端面与外部安装面之间夹设有第二密封圈10，在第二密封圈10与连接部2相对的端面上设有第二定位条10a，在第二定位条10a对应的连接部2端面上设有与第二定位条10a相适应的定位槽2a。为了方便面光源与外部驱动之间的线路连接，在连接部2侧壁 上设有过线孔2b，过线孔内连接有防水密封接头。
进一步地，为了方便安装，在导光部3上设有安装沉孔3b，导光部3通过螺丝穿过安装沉孔3b与外部基板连接。
使用时，通过连接部将本发明的导光罩安装在面光源外围即可，根据照射距离需要，可以选择在导光罩内部加装光源扩散板。
实施例2
参阅图4所示，本发明的一种组合式光源扩散装置，其结构与实施例1基本相同，不同之处在于，在导光部内套设有反光套5，而未采用反光电镀层4。这种结构，具有方便加工、成品率高的优点。其使用方式和使用效果与实施例1相同。
实验例
采用追踪探头式运动反光镜分布光度计，对采用本申请导光罩的面光源灯具和未使用导光罩的同款面光源灯具,在同等条件下，进行光度测试，面光源灯具的色温为5000K，功率为30W，测试结果如图6-图9。同时根据测试结构，制表如下：
光度检测结构表：
Figure PCTCN2017115181-appb-000001
从上表可知，普通面光源在增加导光罩后，中心光强和最大光强显著增加，半峰边角和光束扩散角显著缩小。
并且，从图7和图9对比可知，在大概相同的光通量下，带导光罩的面光源照射距离至少会比不带导光罩的面光源远2米。
面光源非点光源，面光源是由多个点光源组成，面光源中的大部分点光源相对于导光罩并非处于居中位置，因此在通过导光罩进行光线反射后，其出射角度、反射后的照射效果等 具有非常多不确定的结果。但是通过上述测试结果可知，其具有意想不到的效果。其将灯后的光线进行了有效的引导并投向灯具前方，使得照射范围得到有效的圈定，光强得到提高。
以上所举实施例为本发明的较佳实施方式，仅用来方便说明本发明，并非对本发明作任何形式上的限制，任何所属技术领域中具有通常知识者，若在不脱离本发明所提技术特征的范围内，利用本发明所揭示技术内容所作出局部更动或修饰的等效实施例，并且未脱离本发明的技术特征内容，均仍属于本发明技术特征的范围内。

Claims (7)

  1. 一种面光源用导光罩，包括本体(1)，其特征在于，所述本体(1)由呈环形的连接部(2)和呈喇叭形结构的导光部(3)组成，连接部(2)套设在外部面光源外围；所述导光部(3)内壁与竖直面之间的夹角α为10°～45°，所述导光部(3)的高度h为20～100mm。
  2. 根据权利要求1所述的一种面光源用导光罩，其特征在于，所述导光部(3)内表面设有反光电镀层(4)或套设有反光套(5)。
  3. 根据权利要求1所述的一种面光源用导光罩，其特征在于，所述导光部(3)开口部设有覆盖开口部用于防水防尘的防护结构(6)。
  4. 根据权利要求3所述的一种面光源用导光罩，其特征在于，所述防护结构(6)由由内至外依序设置在导光部(3)开口部端面的第一密封圈(7)、透明防护板(8)和压紧环(9)组成；在第一密封圈(7)与导光部(3)相对的端面上设有第一定位条(7a)，在第一定位条(7a)对应的导光部(3)上设有与第一定位条(7a)相适应的安装槽(3a)；所述压紧环(9)通过螺丝与导光部(3)固定连接。
  5. 根据权利要求1所述的一种面光源用导光罩，其特征在于，所述导光部(3)上设有安装沉孔(3b)，导光部(3)通过螺丝穿过安装沉孔(3b)与外部基板连接。
  6. 根据权利要求1所述的一种面光源用导光罩，其特征在于，所述连接部(2)端面与外部安装面之间夹设有第二密封圈(10)，在第二密封圈(10)与连接部(2)相对的端面上设有第二定位条(10a)，在第二定位条(10a)对应的连接部(2)端面上设有与第二定位条(10a)相适应的定位槽(2a)。
  7. 根据权利要求1所述的一种面光源用导光罩，其特征在于，所述连接部(2)侧壁上设有过线孔(2b)。
PCT/CN2017/115181 2017-08-18 2017-12-08 面光源用导光罩 Ceased WO2019033632A1 (zh)

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