WO2012159545A1 - 一种led灯箱 - Google Patents

一种led灯箱 Download PDF

Info

Publication number
WO2012159545A1
WO2012159545A1 PCT/CN2012/075647 CN2012075647W WO2012159545A1 WO 2012159545 A1 WO2012159545 A1 WO 2012159545A1 CN 2012075647 W CN2012075647 W CN 2012075647W WO 2012159545 A1 WO2012159545 A1 WO 2012159545A1
Authority
WO
WIPO (PCT)
Prior art keywords
light box
led
reflector
light
front cover
Prior art date
Application number
PCT/CN2012/075647
Other languages
English (en)
French (fr)
Inventor
王默文
Original Assignee
北京莱易龙光电科技有限公司
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
Priority claimed from CN201110133385.5A external-priority patent/CN102278625B/zh
Application filed by 北京莱易龙光电科技有限公司 filed Critical 北京莱易龙光电科技有限公司
Publication of WO2012159545A1 publication Critical patent/WO2012159545A1/zh

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0083Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the invention relates to the field of light box light sources, and in particular to an LED light box.
  • LED light boxes as devices for screen display, often have problems of poor or uneven brightness, which is related to the structural design of the reflector and, on the other hand, to the dust accumulated in the light box. Due to the static electricity generated by the LED during use, the surface of the LED lamp absorbs a large amount of dust, which affects the brightness of the light box, and the dust adsorbed on the surface of the LED lamp is not easily cleaned.
  • the existing LED light box reflector plates are mostly a large integral plate structure, which is very inconvenient in installation operation due to the large volume and weight, especially for the bottom open cover or the side open cover light box.
  • the operation space is narrower.
  • the existing LED light box also has the problem that the reflective light reflected unevenly, resulting in an unsatisfactory effect of the light box display.
  • the present invention provides an LED light box comprising an outer frame of the light box and an LED reflector in the outer frame, the LED reflector being composed of a plurality of independently detachable reflector modules, each of which
  • the reflector module includes a box body having a transparent front cover and a back cover; the cover body is provided with at least one reflective plate, and the reflective surface of the reflective plate is opposite to the transparent front cover;
  • the reflector plate has a plurality of LED mounting portions.
  • the present invention also provides an LED light box comprising an outer frame of the light box and an LED reflector in the outer frame, the LED reflector being composed of a plurality of independently detachable reflector modules, each of the reflections
  • the cover module includes a transparent front cover and a rear cover; the rear cover includes a frame and a reflective plate, and the frame is respectively engaged with the transparent front cover and the reflective plate, and the reflective surface of the reflective plate and the transparent front
  • the cover is opposite; the reflector has a plurality of LED mounting portions.
  • the invention separates the LED lamp from the outside by using the sealed box body, and avoids the influence of the LED light source on the brightness of the light box due to the adsorbed dust; meanwhile, the LED reflector module provided by the invention can use the LED reflector module to
  • the reflector of the light box is disassembled into a plurality of modules to be assembled.
  • the single module is not only light in weight, small in size, but also housed in a box, so that even one person can easily perform installation or maintenance work, especially for the bottom cover.
  • the side-opening type light box can conveniently carry out the loading and unloading operation of the module from the opening cover without a large operation space, and the structure of the invention also makes the overall light of the light box more uniform.
  • FIG. 1 is a schematic cross-sectional view of a reflector module in an LED light box according to an embodiment of the invention
  • FIG. 2 is a cross-sectional view showing a reflector module in an LED light box according to another embodiment of the present invention.
  • FIG. 3 is a front view of a reflector module in an LED light box according to another embodiment of the present invention
  • FIG. 4 is an overall LED light box reflector according to a plurality of LED light box reflector modules shown in FIG. Schematic diagram
  • Figure 5 is a schematic view of a stepped reflector in an embodiment of the present invention. detailed description
  • the LED light box of the present invention comprises an outer frame of the light box and an LED reflector in the outer frame, and the LED reflector is composed of a plurality of independently detachable reflector modules.
  • 1 is a schematic cross-sectional view of a reflector module in an LED light box according to an embodiment of the invention.
  • Each of the reflector modules includes a casing 10 having a transparent front cover 101 and a rear cover 102.
  • the casing is provided with at least one reflector 103, and the reflective surface of the reflector 103 is The transparent front cover is opposite; the reflective plate
  • the LED reflector module includes a transparent front cover and a rear cover; the rear cover includes a frame and a reflective plate, and the frame is respectively engaged with the transparent front cover and the reflective plate, and the reflection The reflective surface of the plate is opposite to the transparent front cover; the reflective plate has a plurality of LED mounting portions.
  • the main difference between the above two embodiments is that one is formed by separating the back cover from the reflection plate; the other is integrally forming the back cover and the reflection plate, and the reflection plate itself forms a part of the back cover.
  • Both of the embodiments can constitute a box space, and the relative airtightness of the box space not only provides a dustproof effect, but also facilitates cleaning and loading and unloading operations.
  • the box formed by the split body can be more rigorous and the shape is more regular; the integrally formed box body is more material-saving, and has better heat dissipation performance, and has different performances in performance.
  • the following mainly uses the back cover and the back cover.
  • the embodiment in which the reflector is formed separately is described. Actually, the specific structure of the reflector is not substantially different whether it is formed separately or integrally.
  • the transparent front cover refers to a front cover made of a material that can transmit light, such as a transparent or translucent front cover such as glass, PC board, light transmissive board, soft light board, frosted glass, or the like.
  • a fully transparent front cover such as glass or PC board, etc.
  • a translucent front cover such as a soft plate, a milk white board, etc.
  • the light emitted by the LED can be reflected back to the reflector through the translucent front cover, and then reflected twice, so Equivalent to the advanced light of the LED through the translucent front cover, and then illuminate the display direction, so that the light transmitted through the translucent front cover is more soft.
  • the background color of the display screen set on the light box is white or light color
  • the light emitted by the LED is partially reflected back to the side of the reflecting plate through the white film or the light color film of the display screen, and then formed.
  • the secondary reflection illuminates the screen, and by this round-trip multiple reflection, the light emitted by the LED can be uniformly softened by the diffraction effect of the light; however, when the background of the display set on the light box is black or deep In the color system, the black film or dark film of the display will absorb the light emitted by the LED, and will not reflect the light back to the side of the reflector, which reduces the chance of secondary reflection and reduces the chance of secondary reflection.
  • the front cover is set as a translucent front cover
  • the light emitted by the LED is firstly softened inside the box by the secondary reflection formed by the translucent front cover, which is equivalent to the formation.
  • a light box that emits uniform light when the light emitted by the light box reaches the black film or dark film of the display screen, it is already the light after the uniform light processing, avoiding the occurrence of bright strips on the display screen, which can be extremely large. Reducing the thickness of the light box, as the optical path is shortened, also increases the overall brightness, or reduces power consumption without changing the brightness.
  • the thickness of the light box with the translucent front cover can be reduced by more than 10% compared with the thickness of the light box with the full transparent front cover; Under the same conditions, the light uniformity can also be increased by more than 10%.
  • the box body 10 may be a rectangular box body as shown in FIG. 1 or other shapes, such as a transparent front cover and/or a back cover having an arc shape, or a transparent front cover as a cover body, and a cover cover on the back cover, etc. Structure, the present invention is not limited thereto. Moreover, if heat dissipation holes are also provided at the rear cover for heat dissipation, this design still falls within the scope of the case described in this embodiment.
  • the reflector may be of a variety of configurations, such as a planar panel or a plurality of recesses as shown in the embodiment of Figure 1, and the LED mounting portion 104 may be located within the recess.
  • a reflecting plate 103 When used in a single-sided light box, a reflecting plate 103 can be used, and only the front cover is required to be transparent or translucent; and when used in a double-sided light box, two reflecting plates can be disposed in the casing 10, before and after The transparent front cover and the rear cover need to be transparent; or the module provided by the present invention can be integrated with the front and back of the module to achieve the effect of the double-sided light box.
  • the LED mounting portion 104 can be a plurality of LED mounting holes. The installer can install the LED on the reflector through the mounting hole, and the required LED circuit components such as wires or circuit boards can be installed through the mounting. The hole is installed in a gap between the reflector and the back cover.
  • the invention separates the LED lamp from the outside by using the sealed box body, avoiding the direct adsorption of the external dust on the surface of the LED lamp, even after the long-term use, adsorbing on the transparent front cover of the box body due to the electrostatic action of the LED lamp. There is dust, and it is easy to clean the dust outside the flat transparent front cover.
  • the present invention can be combined by a plurality of LED reflector modules to form an integral LED reflector of the light box, so that a single LED reflector module can be loaded or unpacked by one person.
  • a single LED reflector module can be loaded or unpacked by one person.
  • it is convenient to complete the installation or commissioning of the overall light box reflection system. This is even more obvious for subway light boxes.
  • the light box used for the subway is not allowed to open the front cover.
  • the light box reflector can only be installed and maintained by the bottom cover.
  • the maintenance personnel need to have the entire reflector removed for maintenance after the operation space of the bottom open light box is small.
  • the module in which the damaged LED is located can be taken out.
  • the groove structure of the reflecting plate 103 may be a sawtooth wave or a forward triangular wave type or the like having a space, and is preferably a trapezoidal waveform.
  • the groove structure of the trapezoidal waveform not only has a flat bottom, but can be easily mounted with LEDs, and the adjacent grooves have adjacent sides of the groove with a certain distance and form a plane. If the adjacent IHJ slots are closely connected, the angle formed by the sides of the adjacent slots is likely to form a bright line at the relative position of the display screen, which affects the display effect of the screen; and the two sides of the adjacent two grooves are spaced apart.
  • a distance, forming a plane because the plane does not cause the light emitted by the LED to form a convergence, avoiding the appearance of bright lines.
  • the formed plane also increases the strength of the reflector. When it is in contact with the transparent front cover, it can better fit the transparent front cover to improve the tightness of the whole box.
  • the cross section is a trapezoidal waveform, wherein the angle between the bottom edge and the two sides of the trapezoidal wave is greater than or equal to the illumination angle of the LED, that is, the side of the trapezoidal wave is at the effective illumination angle of the LED.
  • the illumination angle of the LED is the light scattering angle of the LED.
  • the angle between the bottom edge of the trapezoidal wave and the two sides is not less than 120 degrees.
  • the trapezoidal side of the reflector does not block the direct direction of the LED.
  • the distance between the side of the trapezoidal wave and the display direction of the screen is gradually shortened, and just the light reflected back from the screen display direction is also from the bottom of the trapezoidal wave.
  • the two sides are gradually weakened, so that we can see that the side of the side that is closest to the direction of the screen display is also the weakest part of the light reflected back from the screen display direction, so that the weakest light can be the shortest optical path again. Reflect back to the screen to show the direction.
  • the gradual strong light can be reflected back to the display direction with a progressive optical path, achieving uniformity of the overall light.
  • the back cover 102 of the casing in FIG. 1 is a flat surface.
  • the back cover of the casing may also be His structure.
  • 2 is a schematic cross-sectional view of an LED light box reflector module according to another embodiment of the present invention.
  • the back cover of the casing has a bottom plate 201 having a plurality of grooves 202 corresponding to the grooves of the reflecting plate 103, and the bottom of the groove of the reflecting plate 103 is accommodated in the rear
  • the groove 202 of the cover bottom plate is covered, and the side of the groove of the reflector plate 103 is supported by the notch of the back cover bottom plate groove 202.
  • FIG. 3 is a front elevational view of an LED light box reflector module in accordance with yet another embodiment of the present invention.
  • the reflector itself is a flat plate, and a plurality of convex reflective devices 301 are disposed on the reflector, distributed around the periphery of the LED mounting portion 104, preferably distributed in a direction of 45 degrees lateral to the LED. , and the distance from the adjacent LED is equal.
  • the light reflecting device 301 is distributed in the lateral direction of the LED, does not block the forward light emission of the LED, and can also receive the light reflected from the screen display direction, thereby forming a virtual light body in the dark area with weak light intensity. In the case of enhancing the overall illumination of the light box, the illumination of the dark area is compensated at the same time, and the overall illumination is uniform.
  • the raised reflective means 301 is located outside the effective illumination angle of the LED such that the raised retroreflective means does not obstruct the direct light emitted by the LED, and the light reflected from the direction of the picture is reflected back to the display direction.
  • the shape of the light reflecting device 301 may be a shape that is thick and thin in the direction of the protrusion, for example, may be at least a part of a sphere or a cone, and thus, the reflective device may be On the side of the side, a slope is formed which is azimuth from the bottom to the top of the screen.
  • the asymptotic light path reflects the faded light back to the display direction, and the light is evenly distributed as a whole.
  • a plurality of light shielding portions may be provided on the transparent front cover 101 at positions opposite to the LED mounting portions on the reflection plate. Since the LED is mounted at the position of the LED mounting portion, the position opposite to the LED is the strongest, and a bright spot is easily formed, while the other regions are formed with a dark region. Therefore, the shielding of the strong light by the light shielding portion can be Make the light box more uniform when displaying the picture.
  • the light shielding portion is preferably a lenticular sheet or a frosted structure, and of course, any structure that can be shielded from light is suitable for use in the present invention.
  • the height of the box body preferably matches the height of the light box.
  • the height of the box body can be correspondingly set according to actual conditions, for example, the height of the box body is smaller than the height of the light box, and can be installed in the light box. The new type does not limit this.
  • the casing may have a mounting portion connected to the light box, and the casing is mounted inside the light box by the mounting portion.
  • the installation of the box body can be correspondingly set according to the actual situation, for example, the box body can be directly installed on the wall to which the light box is attached, and the present invention does not limit this.
  • FIG. 4 it is a schematic diagram of an overall LED light box reflector combined according to a plurality of LED light box reflector modules shown in FIG. Including eight reflector modules as shown in FIG. 3, the box modules containing the reflectors can be inserted into the interior of the light box from the bottom of the light box, and can be disposed inside the light box by mutual support, or can pass
  • the mounting portion is hooked or grooved inside the light box, and the height of each box module is matched with the height of the light box, so that the plurality of boxes are placed in parallel in a single row in the light box, and can be separated from the bottom of the light box when disassembled. take out.
  • the side surface of the groove of the reflector may have a plurality of ribs to increase the glazing effect on the secondary reflected light, and the ribs may be parallel to the edge of the groove and stepped. Distributed on the side of the groove.
  • Figure 5 is a schematic view of a stepped reflector (in which only the stepped shape of the reflector can be extended according to the size of the reflector and the number of LEDs provided), wherein the stepped plane X in the stepped reflector has The light reflected back from the transparent front cover is retroreflected to the transparent front cover with the shortest optical path. If the X portion is not formed as a convex surface but is still a slope of the groove body, the light will be larger.
  • the optical path is obliquely reflected back toward the transparent front cover, and precisely because the step plane is formed, the angle of the retroreflected light can be made as positive as possible to the transparent front cover; meanwhile, the farther away from the LED, the weaker the light intensity
  • the stepped convex plane can receive light earlier and return light with a shorter optical path, thus further exerting a hooking effect.
  • the stepped convex plane is only for controlling the area or height of the light receiving surface, and the area and height of the light receiving surface may be different depending on the actual situation, and the stepped shape is only a preferred embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种LED灯箱,包括灯箱外框架及外框架内的LED反射器。LED反射器由多个可独立拆卸的反射器模组组成,每个反射器模组包括一盒体(10),盒体(10)具有一透明前盖(101)及一后盖(102)。盒体(10)内设置有至少一反射板(103),反射板(103)的反射面与透明前盖(101)相对。反射板(103)上具有多个LED安装部(104)。其中密闭的盒体(10)使得LED灯与外界隔离,避免LED光源吸附灰尘从而影响灯箱亮度;此外,由于整个反射结构由多个可拆卸的反射器模组组装而成,且单个模组重量轻、体积小并容纳于一个盒体(10)内,因此该LED灯箱便于单人进行安装或者维护;另外,这样的灯箱结构使得灯箱整体光线更加均匀。

Description

一种 LED灯箱 技术领域
本发明涉及一种灯箱光源领域, 尤其涉及一种 LED灯箱。
背景技术
现有的 LED灯箱, 作为画面展示的设备, 经常存在亮度不佳或不均匀的 问题, 这一方面是与反射器的结构设计有关, 另一方面也与灯箱内积累的灰 尘有关。 由于 LED在使用中产生的静电, 使 LED灯的表面吸附了大量的灰 尘, 对灯箱的亮度造成影响, 而且在 LED灯表面上吸附的灰尘不容易清理。
另外, 现有的 LED灯箱反射器板多为一个很大的整体板材结构, 由于体 积和重量都很大, 造成在安装操作上非常不方便, 尤其对于釆用底开盖或侧 开盖式灯箱结构时, 由于灯箱前盖无法打开, 操作空间更为狭小, 当遇到需 要对 LED进行维护或更换的时候, 则不得不将整个反射器板拆卸下来再进行 操作。 同时现有的 LED灯箱也存在反光板反射光线不均匀, 导致灯箱展示效 果不理想的问题。
因此, 当前需要一种新的 LED灯箱的结构来解决上述问题。
发明内容
本实用发明所要解决的技术问题在于提供一种 LED灯箱, 以克服现有
LED灯箱亮度不佳或不均匀的问题, 以及反射器安装维护不便的问题。
为解决上述技术问题, 本发明提供了一种 LED灯箱, 包括灯箱外框架及 外框架内的 LED反射器, 所述 LED反射器由多个可独立拆卸的反射器模组 组成, 所述每个反射器模组包括一盒体, 所述盒体具有一透明前盖及一后盖; 所述盒体内设置有至少一反射板,所述反射板的反射面与所述透明前盖相对; 所述反射板上具有多个 LED安装部。
本发明还提供了一种 LED灯箱, 包括灯箱外框架及外框架内的 LED反 射器, 所述 LED反射器由多个可独立拆卸的反射器模组组成, 所述每个反射 器模组包括一透明前盖及一后盖; 所述后盖包括边框及反射板, 所述边框分 别与所述透明前盖及反射板接合,所述反射板的反射面与所述透明前盖相对; 所述反射板上具有多个 LED安装部。
本发明通过密闭的盒体, 使 LED灯在使用中与外界隔离, 避免了 LED 光源因吸附的灰尘对灯箱亮度造成的影响; 同时, 使用本发明提供的 LED反 射器模组, 可以将整个 LED灯箱的反射板分解为多个模组来拼装, 单个模组 不仅重量轻, 体积小, 而且容纳于一个盒体内, 即使一个人也可以很轻松的 完成安装或维护工作, 特别是对于底开盖或侧开盖式灯箱, 不需要很大的操 作空间就可以很方便的从开盖处对模组进行装入与卸出的操作, 同时本发明 的结构也使得灯箱整体光线更加均匀。 附图说明
图 1 为根据本发明实施例所述的 LED灯箱中反射器模组的横截面示意 图;
图 2为根据本发明另一实施例所述的 LED灯箱中反射器模组的横截面示 意图;
图 3为根据本发明又一实施例所述的 LED灯箱中反射器模组的正视图; 图 4为根据多个图 3所示 LED灯箱反射器模组组合而成的整体 LED灯 箱反射器的示意图;
图 5为本发明的实施例中阶梯形反射板的示意图。 具体实施方式
下面参照附图对本发明做进一步的说明。
本发明的 LED灯箱, 包括灯箱外框架及外框架内的 LED反射器, 所述 LED反射器由多个可独立拆卸的反射器模组组成。 图 1为根据本发明实施例 所述的 LED灯箱中反射器模组的横截面示意图。每个反射器模组包括一盒体 10, 所述盒体 10具有一透明前盖 101及一后盖 102; 所述盒体内设置有至少 一反射板 103 , 所述反射板 103 的反射面与所述透明前盖相对; 所述反射板 103上具有多个 LED安装部 104。
在另一实施例中, 所述 LED反射器模组包括透明前盖及后盖; 所述后盖 包括边框及反射板, 所述边框分别与所述透明前盖及反射板接合, 所述反射 板的反射面与所述透明前盖相对; 所述反射板上具有多个 LED安装部。
上述两实施例的主要差别在于, 一个是将后盖与反射板分体形成; 另一 个是将后盖与反射板整体形成, 反射板本身即形成后盖的一部分。 两实施例 都可以构成一个盒体空间, 由于盒体空间的相对密闭性, 不仅起到了防尘的 效果, 而且清洁以及装卸操作更为简便。 所述分体形成的盒体可以更为严密, 外形也更为规则; 所述整体形成的盒体更为节省材料, 且散热性更好, 在性 能上各有千秋, 下面主要以所述后盖与反射板分体形成的实施例进行说明, 实际上, 无论是分体形成还是整体形成, 所述反射板的具体结构都是没有本 质差别的。
本发明实施例所述的透明前盖, 是指由可以透过光的材质制成的前盖, 例如玻璃、 PC板、 透光板、 柔光板、 磨砂玻璃等全透明或半透明前盖。
如果釆用全透明前盖 (例如玻璃或 PC板等) , 则可以便于将 LED发出 的光线尽可能多的一次性透射出去, 比较适合于画面展示的底色为白色或浅 色的灯箱展示画面; 而当釆用半透明前盖 (如柔光板、 奶白板等) 时, 则可 以将 LED发出的光线通过半透明前盖而将部分光线反射回反光板,再二次反 射出去, 如此, 则相当于通过半透明前盖将 LED发出的光线先进性均勾处理 后再照射向画面展示方向, 使得透过半透明前盖的光线整体上更加柔和。
举例来说, 当设置在灯箱上的展示画面的底色为白色或浅色系时, LED 发出的光线通过该展示画面的白膜或浅色膜而部分的被反射回反射板侧, 再 形成二次反射照射向画面, 通过这种往返多次反射, 利用光的衍射效应, 可 以将 LED发出的光线进行均匀柔化处理; 但是, 当设置在灯箱上的展示画面 的底色为黑色或深色系时,该展示画面的黑膜或深色膜就会吸收 LED发出的 光线, 而不会或很少将光线反射回反射板侧, 这就减少了二次反射的机会, 也减小了经由二次反射所达成的勾光效果, 这就会在展示画面上产生亮条, 影响了灯箱的展示效果, 只能通过增加灯箱的厚度, 延长光程来减弱亮条, 但这无疑会增加制造成本, 并影响美观。 对于这种情况, 如果将前盖设置为半透明前盖, 就会通过该半透明前盖 形成的二次反射将 LED发出的光线首先在盒子内部即进行均勾柔化处理,相 当于形成了一个发出均匀光线的光盒, 当光盒发出的光线到达展示画面的黑 膜或深色膜时已经是匀光处理后的光线, 避免了在展示画面上产生亮条, 这 样就可以极大的减小灯箱的厚度, 由于光程缩短, 也增加了整体亮度, 或在 亮度不变的情况下可以减少功耗。
通过对半透明前盖和全透明前盖的实际测试, 在同等条件下, 釆用半透 明前盖的灯箱的厚度, 可以比釆用全透明前盖的灯箱的厚度缩小 10%以上; 而在同等条件下, 光线均匀度也可以增加 10%以上。
所述盒体 10可以如图 1所示为长方形盒体, 也可以是其他形状, 例如透 明前盖和 /或后盖呈弧形, 或透明前盖为一罩体, 罩设于后盖等结构, 本发明 对此不做限制。 而且, 如果出于散热考虑, 还可以在后盖处开设若干散热孔, 但这种设计仍然属于本实施例所述的盒体的范畴。
所述反射板可以是多种结构, 例如可以是平面板, 也可以是如图 1 实施 例所示的具有多个凹槽的形状, 所述 LED安装部 104可以位于所述凹槽内。
当用于单面灯箱时, 可使用一个反射板 103 , 而且只需要前盖为透明或 半透明即可; 而当用于双面灯箱时, 在盒体 10内可以设置两个反射板, 前后 相背设置, 且透明前盖和后盖都需要是透明的; 或者将本发明所提供的模组 整体性的前后相背设置, 都可以实现双面灯箱的效果。
所述 LED安装部 104 ,可以是多个 LED安装孔位,安装人员可以将 LED 通过该安装孔将 LED安装于反射板上, 而且, 所需要的电线或电路板等 LED 电路配件可以透过安装孔装设于反射板与后盖之间的空隙处。
本发明通过密闭的盒体, 使 LED灯在使用中与外界隔离, 避免了 LED 灯的表面直接吸附外界的灰尘, 即使由于 LED灯的静电作用, 长期使用后在 盒体的透明前盖外吸附有灰尘, 也 4艮容易将平整的透明前盖外的灰尘清理干 净。
而且本发明可由多个 LED 反射器模组的组合来共同组成灯箱的整体 LED反射器, 因此, 只需一个人就可以对单个 LED反射器模组进行装入或拆 出的操作, 很方便的完成整体灯箱反射系统的安装或调试。 这对于地铁灯箱 来说, 优势更加明显。 出于安全性的考虑, 用于地铁的灯箱是不允许前开盖 的, 只能是通过底部开盖的方式对灯箱反射器进行安装维护。 在现有技术情 况下, 如果灯箱光源中有一个 LED发生损坏, 由于底开盖灯箱的操作空间狭 小, 维修人员需要不得不将整个反射板卸出后进行维修。 而利用本发明, 可 以将该损坏的 LED所在的模组取出即可。
根据本发明的一个实施例, 反射板 103的凹槽结构, 可以呈锯齿波或具 有间隔的正向三角波型等, 优选为梯形波形。 梯形波形的凹槽结构, 不仅槽 底为平面, 可以方便安装 LED, 而且, 相邻凹槽的相邻槽体侧面具有一定间 距, 并形成一个平面。 如果是相邻 IHJ槽紧密相接, 则相邻槽体侧面形成的夹 角容易在展示画面的相对位置形成亮线, 影响了画面的展示效果; 而将相邻 两凹槽的两侧边间隔一段距离, 形成一平面, 则由于该平面处不会使 LED发 出的光线形成会聚, 避免了亮线的出现。 同时, 形成的平面也增加了反射板 的自身强度, 当与透明前盖抵触支撑时, 可以更好的与透明前盖贴合, 提高 盒体整体的紧密性。
如图 1所示, 其横截面为梯形波形, 其中梯形波的底边与两侧边的夹角 大于或等于 LED的发光角度, 即梯形波的侧边处于 LED的有效发光角度之 夕卜, LED的发光角度为 LED的光线散射角度, 例如当 LED的发光角度为 40 度 - 120度时, 如果所述底边与侧边的夹角小于 120度, 则会阻挡 LED的直 射光线, 因此, 优选的, 梯形波的底边与两侧边的夹角应不小于 120度。 这 样, 由于灯箱是二次反射设备, 反射板的梯形波侧边不仅不会阻挡 LED的直 方向。 如图 1所示, 沿梯形波底边至顶边方向, 所述梯形波侧边与画面展示 方向的距离是逐渐缩短的, 而恰好, 从画面展示方向反射回的光线也是从梯 形波底部向两侧渐弱的, 这样, 我们可以看到, 所述侧边距离画面展示方向 最近的部位也是从画面展示方向反射回的光线最弱的部分, 如此可以最短的 光程将最弱的光线再次反射回画面展示方向。 由此, 沿侧边以此类推, 可以 将渐强的光线以渐长的光程反射回画面展示方向, 实现了整体光线的均匀。
图 1中盒体的后盖 102为一平面, 当然如上述, 盒体的后盖也可以是其 他结构。 如图 2所示, 为根据本发明另一实施例所述的 LED灯箱反射器模组 的横截面示意图。 所述盒体的后盖具有一底板 201 , 所述底板具有多个凹槽 202, 位置与所述反射板 103的凹槽相对应, 所述反射板 103的凹槽的底部容 纳于所述后盖底板的凹槽 202内, 且所述反射板 103凹槽的侧边由所述后盖 底板凹槽 202的槽口所抵触支撑。 通过对后盖的多个凹槽的设置, 可以加强 盒体后盖本身的强度, 保证盒体的结构更加稳定, 不容易产生形变, 同时对 反射板 103也起到支撑的作用。
如图 3所示, 为根据本发明又一实施例所述的 LED灯箱反射器模组的正 视图。 其中, 反射板本身为一平面板, 在反射板上具有多个凸起的反光装置 301 , 分布于所述 LED安装部 104的周边, 优选的, 是分布于所述 LED侧向 45度的方向上, 且距离相邻 LED的距离相等。
其中, 反光装置 301分布于 LED的侧向方向上, 不会阻挡 LED的正向 发光, 还可以通接收从画面展示方向反射回来的光, 从而在光照强度较弱的 暗区形成一个虚拟发光体, 在增强灯箱整体照度的情况下, 同时弥补了暗区 的光照, 实现了整体照度的均匀。
而且凸起的反光装置 301位于所述 LED的有效发光角度之外,使得凸起 的反光装置不会阻碍 LED直接发出的光线, 而将从画面展示方向反射回来的 光再次反射回画面展示方向。
同样, 为了起到匀光的效果, 所述反光装置 301的形状, 可以是沿凸起 方向呈由粗变细的形状, 例如, 可以呈球体或锥体的至少一部分, 这样, 可 以在反光装置的侧面上形成一个由下至上距离画面展示方向渐近的斜面, 通 过渐近的光程将渐弱的光线反射回画面展示方向, 整体上均匀了光线。
此外, 根据本发明的实施例, 在所述透明前盖 101上可具有多个遮光部, 位置与所述反射板上的 LED安装部相对。 由于 LED安装部的位置上会安装 LED, 因此, 与 LED相对的位置处光度最强, 容易形成亮点, 而相对的其他 区域则会形成暗区, 因此, 通过遮光部对强光的遮蔽, 可以使灯箱在显示画 面时亮度更均匀。
所述遮光部优选为光栅片或磨砂结构, 当然只要可进行遮光的结构都适 用于本发明。 所述盒体的高度优选为与所述灯箱的高度相匹配, 当然可以根据实际情 况对盒体的高度进行相应设置, 譬如盒体的高度小于灯箱的高度, 可以安装 在灯箱内即可, 本新型对此不作限定。
所述盒体可以具有与所述灯箱相连接的安装部, 通过该安装部, 将盒体 安装在灯箱内部。 当然可以根据实际情况对盒体的安装进行相应设置, 譬如 该盒体可直接安装在灯箱依附的墙上, 本新型对此不作限定。
如图 4所示, 为根据多个图 3所示 LED灯箱反射器模组组合而成的整体 LED灯箱反射器的示意图。 其中, 包括了 8个图 3所示反射器模组, 这些容 纳有反射板的盒体模组可从灯箱底部开口进入灯箱内部, 可以通过相互之间 的支撑而设置于灯箱内部, 也可以通过安装部而挂接或槽接于灯箱内部, 每 个盒体模组的高度与灯箱等高度相匹配, 以便多个盒体在灯箱内部呈单排并 列平行放置, 而拆卸时可以从灯箱底部独立取出。
进一步地, 所述反射板的凹槽的侧面可以具有多条凸棱, 以增加对二次 反射光线的勾光效果, 这些凸棱可以是与所述凹槽槽口边沿平行, 且呈阶梯 状分布于所述凹槽的侧面上。 图 5是阶梯形反射板的示意图 (其中仅作为示 意, 该反射板的阶梯形可以根据反射板的尺寸和设置的 LED的数量, 进行延 伸) , 其中阶梯形反射板中具有的阶梯平面 X, 将透明前盖方面反射回的光 线以尽量短的光程回射向透明前盖, 如果在所述 X部不是形成凸起, 而仍是 槽体的斜面, 那么, 光线将会以较大的光程斜向回射向透明前盖, 而正是因 为形成了阶梯平面, 则可以将回射光线的角度尽量正向于透明前盖; 同时, 距离 LED越远的区域, 其光强越弱, 而由于槽体的坡度, 光强越弱的区域, 其阶梯状的凸起平面可以更早的接收到光线并以更短的光程回射光线,因此, 进一步起到了勾光效果。
阶梯状的凸起平面仅是为了控制受光面的面积或高度, 而受光面的面积 和高度都是可以根据实地情况而有不同, 阶梯形仅为较佳实施例。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不 局限于此, 任何熟悉该技术的人在本发明所揭露的技术范围内, 可轻易想到 的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范 围应该以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种 LED灯箱, 包括灯箱外框架及外框架内的 LED反射器, 其特 征在于, 所述 LED反射器由多个可独立拆卸的反射器模组组成, 所述每个反 射器模组包括一盒体, 所述盒体具有一透明前盖及一后盖; 所述盒体内设置 有至少一反射板, 所述反射板的反射面与所述透明前盖相对; 所述反射板上 具有多个 LED安装部。
2、 如权利要求 1所述的灯箱,其特征在于, 所述透明前盖为全透明或 半透明前盖。
3、 如权利要求 1所述的灯箱, 其特征在于, 所述透明前盖为柔光板。
4、 如权利要求 1所述的灯箱 ,其特征在于,所述反射板具有多个凹槽, 所述 LED安装部位于所述凹槽的底部。
5、 如权利要求 4所述的灯箱,其特征在于, 所述凹槽的侧面具有多条 凸棱。
6、 如权利要求 5所述的灯箱,其特征在于, 所述多条凸棱与所述凹槽 槽口边沿平行, 且呈阶梯状分布于所述凹槽的侧面上。
7、 如权利要求 4所述的灯箱,其特征在于, 所述反射板的横截面为梯 形波形。
8、 如权利要求 7所述的灯箱,其特征在于, 所述梯形波的底边与侧边 的夹角不小于 LED的发光角度。
9、 如权利要求 4所述的灯箱,其特征在于, 所述盒体的后盖具有一底 板, 所述底板具有多个凹槽, 位置与所述反射板凹槽相对应, 所述反射板凹 槽的底部容纳于所述后盖底板的凹槽内, 且所述反射板凹槽的侧边由所述后 盖底板 IHJ槽的槽口所抵触支撑。
10、 如权利要求 1所述的灯箱,其特征在于, 所述透明前盖上具有多个 遮光部, 位置与所述反射板上的 LED安装部相对。
11、 如权利要求 1所述的灯箱,其特征在于, 所述反射板上具有多个凸 起的反光装置, 分布于所述 LED安装部的周边。
12、 一种 LED灯箱, 包括灯箱外框架及外框架内的 LED反射器, 其特 征在于, 所述 LED反射器由多个可独立拆卸的反射器模组组成, 所述每个反 射器模组包括一透明前盖及一后盖; 所述后盖包括边框及反射板, 所述边框 分别与所述透明前盖及反射板接合, 所述反射板的反射面与所述透明前盖相 对; 所述反射板上具有多个 LED安装部。
13、 如权利要求 12所述的灯箱, 其特征在于, 所述透明前盖为全透明 或半透明前盖。
14、 如权利要求 12所述的灯箱,其特征在于, 所述透明前盖为柔光板。
15、 如权利要求 12所述的灯箱, 其特征在于, 所述反射板具有多个凹 槽, 所述 LED安装部位于所述凹槽的底部。
16、 如权利要求 15所述的灯箱, 其特征在于, 所述凹槽的侧面具有多 条凸棱。
17、 如权利要求 16所述的灯箱, 其特征在于, 所述多条凸棱与所述凹 槽槽口边沿平行, 且呈阶梯状分布于所述凹槽的侧面上。
18、 如权利要求 15所述的灯箱, 其特征在于, 所述反射板的横截面为 梯形波形。
19、 如权利要求 18所述的灯箱, 其特征在于, 所述梯形波的底边与侧 边的夹角不小于 LED的发光角度。
20、 如权利要求 12所述的灯箱, 其特征在于, 所述透明前盖上具有多 个遮光部, 位置与所述反射板上的 LED安装部相对。
21、 如权利要求 12所述的灯箱, 其特征在于, 所述反射板上具有多个 凸起的反光装置, 分布于所述 LED安装部的周边。
PCT/CN2012/075647 2011-05-23 2012-05-17 一种led灯箱 WO2012159545A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110133385.5A CN102278625B (zh) 2011-04-20 2011-05-23 一种led灯箱
CN201110133385.5 2011-05-23

Publications (1)

Publication Number Publication Date
WO2012159545A1 true WO2012159545A1 (zh) 2012-11-29

Family

ID=47218139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/075647 WO2012159545A1 (zh) 2011-05-23 2012-05-17 一种led灯箱

Country Status (1)

Country Link
WO (1) WO2012159545A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD940946S1 (en) * 2019-09-19 2022-01-11 Changzhou Kaisen Photoelectricity Co., Ltd. LED light

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0814453A2 (en) * 1996-06-18 1997-12-29 Eastman Kodak Company Illumination apparatus
DE4433291C2 (de) * 1994-09-19 1998-03-19 Hentschel Hans Juergen Prof Dr Therapieleuchte zur Behandlung lichtabhängiger Beschwerden und Erkrankungen
JP2005267852A (ja) * 2004-03-16 2005-09-29 Sharp Corp バックライト反射板
CN201206749Y (zh) * 2008-04-25 2009-03-11 林志泽 发光二极管条灯及其匀光板
CN201255394Y (zh) * 2008-08-01 2009-06-10 钟英 一体化防水led灯板
CN201412774Y (zh) * 2009-04-10 2010-02-24 浙江晶日照明科技有限公司 一种组合式反光杯
CN201428960Y (zh) * 2009-06-23 2010-03-24 梁文斌 带有反光罩和灯罩的荧光灯具
CN102278625A (zh) * 2011-04-20 2011-12-14 王默文 一种led灯箱

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4433291C2 (de) * 1994-09-19 1998-03-19 Hentschel Hans Juergen Prof Dr Therapieleuchte zur Behandlung lichtabhängiger Beschwerden und Erkrankungen
EP0814453A2 (en) * 1996-06-18 1997-12-29 Eastman Kodak Company Illumination apparatus
JP2005267852A (ja) * 2004-03-16 2005-09-29 Sharp Corp バックライト反射板
CN201206749Y (zh) * 2008-04-25 2009-03-11 林志泽 发光二极管条灯及其匀光板
CN201255394Y (zh) * 2008-08-01 2009-06-10 钟英 一体化防水led灯板
CN201412774Y (zh) * 2009-04-10 2010-02-24 浙江晶日照明科技有限公司 一种组合式反光杯
CN201428960Y (zh) * 2009-06-23 2010-03-24 梁文斌 带有反光罩和灯罩的荧光灯具
CN102278625A (zh) * 2011-04-20 2011-12-14 王默文 一种led灯箱

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD940946S1 (en) * 2019-09-19 2022-01-11 Changzhou Kaisen Photoelectricity Co., Ltd. LED light

Similar Documents

Publication Publication Date Title
WO2015071130A1 (en) Acoustic lighting tile
KR20150060361A (ko) 조명등 장치
EP3135983B1 (en) Solar spectrum type led eye-protection flat lamp
CN213207543U (zh) 一种照明灯具
CN203784754U (zh) Led光源模块及灯箱
CN111828886A (zh) 一种格栅灯
CN102278625B (zh) 一种led灯箱
WO2012159545A1 (zh) 一种led灯箱
WO2013080903A1 (ja) 照明装置、照明灯、バックライト、液晶表示装置、およびテレビジョン受信装置
CN103062710B (zh) 一种用于灯箱的模组型光源盒装置
CN204141310U (zh) 用于双面灯箱的led灯盒
CN202144982U (zh) 一种用于灯箱的led反射器模组
CN209839723U (zh) 一种面板灯及其底盘
CN103244861B (zh) 一种用于led灯箱的光源模组
CN202140978U (zh) 一种用于led灯箱的反射器系统
CN202302860U (zh) 一种led灯箱
CN202791590U (zh) 一种led灯箱及用于led灯箱的光源单元
CN112283621A (zh) 一种教室用led灯
WO2013020422A1 (zh) 一种灯箱
CN105556352A (zh) 照明装置以及显示装置
CN202677765U (zh) 一种灯箱
CN214580616U (zh) 一种无边框灯具
CN210069753U (zh) 一种黑板灯
CN204141377U (zh) 用于灯箱的led灯盒
CN221171947U (zh) 控制盒和控制系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12788950

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12788950

Country of ref document: EP

Kind code of ref document: A1