WO2009070981A1 - Module de source de lumière à contre-jour vespérale à large faisceau lumineux et source de lumière à contre-jour utilisant ce module - Google Patents

Module de source de lumière à contre-jour vespérale à large faisceau lumineux et source de lumière à contre-jour utilisant ce module Download PDF

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Publication number
WO2009070981A1
WO2009070981A1 PCT/CN2008/001898 CN2008001898W WO2009070981A1 WO 2009070981 A1 WO2009070981 A1 WO 2009070981A1 CN 2008001898 W CN2008001898 W CN 2008001898W WO 2009070981 A1 WO2009070981 A1 WO 2009070981A1
Authority
WO
WIPO (PCT)
Prior art keywords
wide
light
reflection
width
backlight module
Prior art date
Application number
PCT/CN2008/001898
Other languages
English (en)
Chinese (zh)
Inventor
Junbo Liu
Original Assignee
Junbo Liu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Junbo Liu filed Critical Junbo Liu
Publication of WO2009070981A1 publication Critical patent/WO2009070981A1/fr

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Classifications

    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the invention relates to a backlight module, in particular to a single module or a plurality of modules installed in a light box or a wide light box for use as a backlight of an advertising light box, and can make the advertising light box energy-saving, high brightness and uniformity. Wide-width, uniform backlight module. Background technique
  • advertising light boxes have become a widely used form of media. Streets, alleys, shopping malls, supermarkets, various exhibitions, exhibitions, exhibitions, etc., are everywhere without advertising light boxes, advertising light boxes used. The number is huge, but most of the existing light boxes have very low light utilization rate, which results in a large amount of energy waste, and the uniformity of illumination of the picture is also poor, which directly affects the use effect of the advertising light box.
  • Patent No. CN200420117731.6 "shading plate” provides a visor for improving the uniformity of light illumination of the advertising light box, but the structure of the visor is only used to block the direct light of the light source, and is not suitable for the wide format. Reflecting plates, especially wide-area reflectors for small-diameter light sources. Moreover, the visor requires a higher precision positioning, and a small range of deviation also easily causes a significant change in brightness on the display surface, that is, poor installation affects the uniformity of illumination.
  • Patent Application No. CN200720110837.7 “Reflection and homogenizing device for straight tube type light source” also proposes a reflection and homogenizing device for a straight tube type light source which can make the advertising light box thin, effective, and energy-saving.
  • the uniform mask has an irregular shape, it will increase the manufacturing difficulty and the installation precision is relatively high, thereby increasing the difficulty of the work.
  • the first technical problem to be solved by the present invention is to provide a wide-width homogenizing backlight module with high light utilization efficiency and good illumination uniformity for the above-mentioned state of the art.
  • a second technical problem to be solved by the present invention is to provide a backlight source to which the above wide-width homogenizing backlight module is applied.
  • a wide-width homogenizing backlight module comprising a line light source, a uniform light reflecting plate and a reflection cover, wherein the line light source is disposed on the uniform light reflecting plate And the reflector, wherein the uniform light reflecting plate has a specular reflection area, a mirror diffuse reflection area and a diffuse reflection area, wherein the specular reflection area is located at a central portion of the uniform light reflecting plate, and the specular reflection area
  • the longitudinal direction is substantially parallel to the line source, and a mirror diffuse reflection region is respectively disposed on both sides of the specular reflection region, and a diffuse reflection region is disposed at least outside of one of the mirror diffuse reflection regions.
  • the reflector may further have one or more transmission holes, and the transmission holes are preferably in the shape of a rhomboid or a rhomboid, and the edge of the reflector has a laterally convex tooth.
  • one side of the reflective cover facing the line light source may be a specular reflective surface, and the edge convex teeth of the reflective cover are sharp-toothed or arc-shaped, and adjacent convex teeth The degree of protrusion is not equal; and the other side of the reflective cover facing the display surface may be a diffuse reflection surface.
  • the line source may have an arc-shaped outer surface, and correspondingly, the reflector has a circular arc groove, or the reflector may be flat, and the line source There is a gap between them or abut against the line source.
  • the uniform light reflecting plate does not need to have a specific shape, but preferably, it may be composed of two sub-boards having a folded surface, and the two sub-boards are respectively arranged in wing-symmetric manner on both sides of the line light source. And, the two sub-boards intersect at a convex ridge line to form an angle ⁇ .
  • the mirror diffuse reflection reflection region may be composed of a specular reflection surface and at least one diffuse reflection surface disposed on a side of the specular reflection surface, and the diffuse reflection capability of the diffuse reflection surface is from the middle of the mirror diffusion reflection region.
  • the side edges are gradually reinforced, and may be formed by providing a dot shape, a tooth shape or a strip shape.
  • the mirror diffuse reflection reflecting area may have at least one diffuse reflection surface at a central portion.
  • the diffuse reflection surface may be directly formed by a treatment process such as sanding or doting, or may be formed by attaching a diffuse reflection hook strip on the specular reflection surface.
  • the technical solution adopted by the second technical problem to be solved by the present invention is a wide-width homogenizing backlight composed of a wide-width homogenizing backlight module, characterized in that juxtaposed by at least two of said wide-width homogenizing backlight modules or Row intersection Arranged in a wrong manner, and at least behind the seam of the uniform light reflecting plate between two adjacent widened light-homogenizing backlight modules has a space for placing a ballast or a power source.
  • the invention has the advantages that: the reflecting surface of the uniform light reflecting plate is composed of a specular reflection area, a mirror diffuse reflection reflection area and a diffuse reflection area, and the setting of three different reflection areas can effectively solve the reflected light. Distribution, control problems, even the wide reflector can ensure the uniformity of the display surface.
  • the design of the reflector also has obvious advantages.
  • the mirror-reflecting surface facing the line source can effectively reflect the light to the reflecting surface far away from the offline source, and the diffusing surface toward the display surface can also make the display surface
  • the light is softer, the upper transmission hole has a larger size, which is easier to manufacture, and the rhomboid-shaped transmission hole does not require high precision for the installation of the reflector, and the edge is a pointed-toothed design with varying degrees of protrusion.
  • the reflected light can be cross-reflected at a distance to make the light softer, and the reflector with the arc groove can make the positioning faster and easier.
  • the effective efficiency of the backlight module is about 90%, and the width is 500 ⁇ 600mm, so the amount of the light source can be reduced, thereby achieving the purpose of energy saving.
  • the backlight module can be used alone or multiple times. Parallel use of large-format backlights, can also be interlaced to form a large-format backlight, the thickness of the advertising light box can be controlled between 70mm (using T8 tube) ⁇ 50mm (using T5 tube), this module is installed in the advertising light box The uniformity of illumination on the display surface can reach 90% or more without using a soft light board.
  • FIG. 1 is a schematic perspective view of an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention.
  • Figure 3 is a schematic diagram of the optical path of Figure 2.
  • Fig. 4 is a schematic cross-sectional view showing an embodiment in which a wide-width light-reflecting reflector is used.
  • Figure 5 is a partial enlarged view of the mirror diffusing reflection region 6 of Figure 1.
  • Fig. 6 is an enlarged view of the periphery of the diffuse reflection reflecting portion 6' of Fig. 4.
  • Figure 7 is a schematic view of a flat strip-shaped reflector combined with a line source.
  • Figure 8 is a schematic illustration of a reflector having a central arcuate slot mated with a tubular line source.
  • Fig. 9 is a partial structural schematic view of a reflector having a transmission hole of a rhomboid polygon.
  • Fig. 10 is a partial structural schematic view of a reflector having a rhomboid arc-shaped transmission hole.
  • Figure 11 is a schematic illustration of a side-by-side use of an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of the interleaving of rows and columns according to an embodiment of the present invention.
  • FIG. 13 is a use state reference diagram (installed in a light box) of an embodiment of the present invention. detailed description The embodiments of the present invention are further described below in conjunction with the accompanying drawings.
  • the backlight module in this embodiment uses a line light source 2, which may be an ordinary straight tube type fluorescent lamp (such as T8, ⁇ 5), an external electrode fluorescent tube (EEFL), or a cold cathode fluorescent tube (CCFL), LED tube (LED), etc.
  • a line light source 2 which may be an ordinary straight tube type fluorescent lamp (such as T8, ⁇ 5), an external electrode fluorescent tube (EEFL), or a cold cathode fluorescent tube (CCFL), LED tube (LED), etc.
  • the line light source 2 is disposed between the uniform light reflecting plate 4 and the reflecting cover 3, and the uniform light reflecting plate 4 is a reflecting plate having a multi-folded surface, and the light emitted from the line light source 2 is finally emitted from the display surface 1.
  • the uniform light reflecting plate 4 is composed of two sub-plates which are symmetrical to the center line of the line light source and each have a plurality of reflecting surfaces, and the two sub-boards are wing-shaped, forming ⁇ below the left and right symmetrical raised ridge lines.
  • the angle, and the angle ⁇ is preferably an acute angle.
  • the angle between the adjacent reflection surfaces of the hook light reflection plate 4 is generally an obtuse angle, and the uniform light reflection plate 4 is divided into mirror surfaces from the center line to the two sides. Reflective zone, mirror diffuse reflection zone, diffuse reflection zone.
  • the specular reflection area is composed of two specular reflection surfaces 51, 52 made of a mirror material.
  • the mirror diffuse reflection region 6 is made of a mirror material and a diffuse reflection material, and is composed of a specular reflection surface 62 and a diffuse reflection surface disposed on a side of the specular reflection surface, and the diffuse reflection surface has a convex tooth shape;
  • the area consists of three diffuse reflecting surfaces 71, 72, 73 made of diffuse reflective material.
  • the mirror diffuse reflection reflecting region 6 is formed by attaching a diffuse reflection light strip having a plurality of staggered torso shapes on both sides of the intermediate specular reflection surface 62, and the diffuse
  • the tooth profile of the reflected light strip is directed toward the center of the mirror diffuse reflection region 6, and the diffuse reflection light strip constitutes the diffuse reflection surface 61, 63, and the diffuse reflection strip may have a dot or a plurality of strips (Fig. painting:).
  • the width of the mirror diffusing reflection region 6' on the uniform light reflecting plate 4' is increased, and one or more diffuse reflection light strips 64 are added to the original mixed reflecting surface.
  • the width of the diffuse reflection surface 63' is appropriately increased and wide, so that the illumination of the display surface of the wide-width uniform light-reflecting plate is more uniform, so that the backlight module of this structure is suitable for the wide-width uniform light-reflecting plate.
  • part of the light emitted from the line light source 2 is reflected by the specular reflection surfaces 51, 52, 62 and reflected to the diffuse reflection surfaces 71, 72, 73 far away from the offline light source 2, and then diffused to the display surface. 1.
  • the reflector 3 adjusts the amount of light directly from the line source to the display surface 1 through the transmission hole, and reflects part of the light through the specular reflection surface on the reflector 3 to the reflection surface of the hook light reflector 4 which is far away from the offline light source 2, and then reflects To the display surface 1, and the multi-layered convex teeth at the edge of the reflector 3 can effectively adjust the influence of the reflected light near the line source 2 on the display surface 1, and the diffuse reflection surfaces 61, 63 of the mirror diffuse reflection region pass through its density change. Further adjust the illumination uniformity of the display surface 1.
  • the reflecting cover 3 faces the line light source.
  • the surface of the reflecting surface 3 is a specular reflecting surface, and the display surface 1 is a diffuse reflecting surface.
  • the reflector 3 is a flat strip, located above the line source 2, with a small gap between the line source 2 or directly on the line source 2 .
  • an arcuate groove is formed in the middle of the reflector 3', and the arc of the arc groove is curved with the surface of the line source 2. Consistent, the width of the arc groove is smaller than the line light The diameter of the source 2, the circular arc groove makes the reflector 3' simple, quick and easy to position.
  • the shape of the transmission hole 31 on the reflector 3 is a rhomboid polygon, and the edge 32 has a convex tooth shape and a convexity of the adjacent convex tooth. Not equal
  • the shape of the transmission hole 31' on the reflector 3 is a rhomboid arc shape, and the edge 32' of the convex tooth is arc-shaped, adjacent to the convex shape.
  • the degree of protrusion of the teeth is not equal.
  • the tines, the arc teeth and the transmission holes on the edge of the reflector 3 are distributed symmetrically with respect to the center line of the reflector 3.
  • two or more of the embodiments are arranged side by side in parallel with a plurality of uniform light reflecting plates 4 and line light sources 2 which can be used as large format backlights.
  • two or more embodiments of the present embodiment are arranged and interleaved to form a super-large-format backlight, wherein two rows of light source heads 21 connected to the line source 2 can be inserted into another row of two modules.
  • the uniform light-reflecting plate 4 Under the joint of the uniform light-reflecting plate 4, the indirect stitch shadow is eliminated, and the uniform light requirement is further achieved.
  • the reference state of the present embodiment in the light box 9, the space behind the seam of the uniform light reflecting plate 4, 4' between the two wide-width light-homing backlight modules can be placed in the ballast or
  • the power supply 8 makes full use of the space inside the light box 9.
  • the thickness of the frame of the light box 9 can be controlled between 70 mm (using a T8 tube) and 50 mm (using a T5 tube), and the illumination of the display surface 1 is not soft. In the case of light panels, it can reach more than 90%.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

Un module de source de lumière à contre-jour vespérale à large faisceau lumineux comprend une source lumineuse linéaire (2), une plaque de réflexion de lumière vespérale (4) et un recouvrement de réflexion (3) et, une source de lumière linéaire (2) située entre la plaque de réflexion (4) et le recouvrement de réflexion (3). La plaque de réflexion (4) comprend des zones de réflexion miroir (51, 52), des zones de réflexion mixtes (6, 6') constituées de zones de réflexion miroir (62) et de zones de réflexion diffuse (61, 63, 63', 64) et des zones de réflexion diffuse (71, 72, 73). Les zones de réflexion miroir (51, 52) sont positionnées à la partie centrale de la plaque de réflexion (4) et, ces zones de réflexion miroir (51, 52) sont sensiblement parallèles à la source de lumière linéaire (2) dans le sens longitudinal. Les régions de réflexion mixtes (6, 6') sont situées des deux côtés des zones de réflexion miroir (51, 52) et les zones de réflexion diffuse (71, 72, 73) sont situées à l'extérieur d'au moins une région de réflexion mixte (6, 6'). Une source de lumière à contre jour vespérale comprend au moins deux modules de source agencées côte à côte ou agencées par colonnes ou par rangées.
PCT/CN2008/001898 2007-11-23 2008-11-21 Module de source de lumière à contre-jour vespérale à large faisceau lumineux et source de lumière à contre-jour utilisant ce module WO2009070981A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710157151.8 2007-11-23
CNA2007101571518A CN101178514A (zh) 2007-11-23 2007-11-23 宽幅匀光背光源模块

Publications (1)

Publication Number Publication Date
WO2009070981A1 true WO2009070981A1 (fr) 2009-06-11

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PCT/CN2008/001898 WO2009070981A1 (fr) 2007-11-23 2008-11-21 Module de source de lumière à contre-jour vespérale à large faisceau lumineux et source de lumière à contre-jour utilisant ce module

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CN (2) CN101178514A (fr)
WO (1) WO2009070981A1 (fr)

Cited By (1)

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CN102956166A (zh) * 2012-11-19 2013-03-06 无锡九条龙汽车设备有限公司 一种led灯箱结构

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CN101178514A (zh) * 2007-11-23 2008-05-14 刘俊波 宽幅匀光背光源模块
CN101907249B (zh) * 2009-06-08 2013-12-11 鸿富锦精密工业（深圳）有限公司 背光模组
CN102012003A (zh) * 2009-09-04 2011-04-13 王默文 一种阶梯状反光板
CN101832514A (zh) * 2010-05-31 2010-09-15 海洋王照明科技股份有限公司 一种光源反射器及具有该反射器的灯具
CN101915614B (zh) * 2010-07-26 2012-09-05 武汉大学 三维曲面全漫射太阳光模拟器
CN201954470U (zh) * 2010-11-18 2011-08-31 香港应用科技研究院有限公司 光反射器和具有该光反射器的照明系统
US8985799B2 (en) * 2010-11-30 2015-03-24 Sharp Kabushiki Kaisha Lighting device, display device and television device
CN102102854A (zh) * 2011-02-17 2011-06-22 毛有强 一种能提高亮度均匀度的高效反光器及灯具
CN103867961B (zh) 2012-12-07 2016-06-15 扬升照明股份有限公司 发光单元
BR112015027881A2 (pt) * 2013-05-23 2017-07-25 Koninklijke Philips Nv painel acústico emissor de luz, e, método de fabricação de um painel acústico emissor de luz
CN103325325A (zh) * 2013-05-28 2013-09-25 黄绮凡 节能广告灯箱模块以及节能广告灯箱
CN104565988B (zh) 2013-10-12 2017-03-08 扬升照明股份有限公司 光源模块
JP2017523572A (ja) * 2014-07-08 2017-08-17 フィリップス ライティング ホールディング ビー ヴィ 光源からの光を導光板内に結合するための照明装置
CN104834045A (zh) * 2015-04-02 2015-08-12 欧普照明股份有限公司 一种导光组件
DE102017006424B4 (de) * 2017-07-07 2022-04-21 Emz-Hanauer Gmbh & Co. Kgaa Leuchtvorrichtung zum Einbau in eine Wandfläche eines elektrischen Geräts der Haushaltsausstattung
CN108317448A (zh) * 2018-03-23 2018-07-24 欧普照明股份有限公司 发光模组及照明装置

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CN101178514A (zh) 2008-05-14
CN101418929B (zh) 2011-04-06

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