WO2010108370A1 - 透射式背光源led灯箱匀光装置及灯箱 - Google Patents

透射式背光源led灯箱匀光装置及灯箱 Download PDF

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Publication number
WO2010108370A1
WO2010108370A1 PCT/CN2009/075516 CN2009075516W WO2010108370A1 WO 2010108370 A1 WO2010108370 A1 WO 2010108370A1 CN 2009075516 W CN2009075516 W CN 2009075516W WO 2010108370 A1 WO2010108370 A1 WO 2010108370A1
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Prior art keywords
light
led
light box
box
disposed
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PCT/CN2009/075516
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English (en)
French (fr)
Inventor
王默文
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锐光照明系统（上海）有限公司
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Publication of WO2010108370A1 publication Critical patent/WO2010108370A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

  • the invention relates to a light homogenizing device for a lighting device, in particular to a transmissive backlight LED light box hooking device; and to a light box having the above hooking device.
  • the traditional light source of the advertising light box uses a plurality of lamps arranged in parallel.
  • LEDs have been used as the backlight of the transmissive light box.
  • the light box screen may also have discontinuous or uneven light, that is, there is also a dark area between the LED light sources, thereby affecting the display effect of the light box screen.
  • the applicant has made various improvements to the conventional light box, including: 1.
  • the lamp Arranging a curved reflector in the portion of the light box tube near the back plate, the lamp The light emitted by the tube to the back plate is emitted to the periphery of the tube; 2.
  • a reflective angle connecting the two arc-shaped reflectors is disposed between the adjacent two curved reflectors.
  • the above improvement plays a certain role in improving the display effect of the light box.
  • the above improvement solution cannot be directly applied to the light box of the LED as the light source to eliminate the light box screen. Dark area.
  • the invention provides a transmissive backlight LED light box homogenizing device and a light box, which can eliminate the dark area on the screen of the light box, improve the uniformity of illumination on the display surface of the light box, and uniformly illuminate the light on the picture support plate.
  • the present invention provides a transmissive backlight LED light box homogenizing device, the light box comprising a picture support plate disposed in a display direction of the light box, a plurality of LEDs disposed in the light box, and a light-reflecting device between the LEDs, the light-sharing device is disposed in a light box display direction, and the light-hooking device is provided with a light-shielding structure corresponding to the position of the LED to block the light directly emitted by the LED and Drain around.
  • the LED array is arranged, the light homogenizing device is a warp and weft knitted mesh plate, and the light shielding structure is an intersection of the mesh plates corresponding to the LED.
  • a semi-transparent light shielding film, a concave lens or a convex lens is disposed at an intersection of the mesh plates.
  • the light homogenizing device is a translucent plate, and the light shielding structure is a black wire mesh pattern printed on the translucent plate corresponding to the LED.
  • the light-hooking device is a translucent plate
  • the light-shielding structure is a concave lens structure or a convex lens structure corresponding to the LED formed on the translucent plate.
  • the invention also provides a light box, comprising a picture piece support plate disposed in a display direction of the light box, a plurality of LEDs disposed in the light box, a reflective device disposed between the LEDs, and a hook disposed in a direction of the light box display a light device, wherein the light hooking device is disposed to block the LED array according to a position of the LED, the light homogenizing device is a warp and weft mesh plate, and the light shielding structure is the same as the LED The intersection of the grid boards.
  • a semi-transparent light shielding film, a concave lens or a convex lens is disposed at an intersection of the mesh plates.
  • the light homogenizing device is a translucent plate, and the light shielding structure is a black wire mesh pattern printed on the translucent plate corresponding to the LED.
  • the light-hooking device is a translucent plate
  • the light-shielding structure is a concave lens structure or a convex lens structure corresponding to the LED formed on the translucent plate.
  • the invention has the advantages that: according to the characteristics of the LED light source, the light-emitting device is arranged in the display direction of the light box, and the light-shielding structure is arranged only at the position corresponding to the LED to block the light directly emitted by the LED and to guide the surrounding light , so that the light is gently and evenly illuminated onto the display panel.
  • a hook-and-loop device having a warp-weaving mesh plate and a concrete structure having a black mesh-like pattern or a concave or convex lens structure is used, and the structure is simple, the manufacturing cost is low, and the light-shielding and light-guiding effects are good. .
  • FIG. 1 is a schematic structural view of an embodiment of a light homogenizing device of the present invention
  • FIG. 2 is a schematic structural view of another embodiment of a light homogenizing device of the present invention
  • 3 is a schematic structural view of still another embodiment of the light homogenizing device of the present invention.
  • the main object of the present invention is to provide a transmissive backlight LED light box homogenizing device, the light box comprising a picture supporting plate disposed in a display direction of the light box, and the backlight is provided with a plurality of LEDs disposed in the light box, between the light source LEDs
  • the light-shielding device is disposed in the light box display direction, and the light-hooking device is provided with a light-shielding structure corresponding to the position of the LED to block the light directly emitted by the LED and to guide the surrounding light.
  • the LED 2 array is arranged, and the light homogenizing device is a warp and weft knitted mesh plate 1 , which is disposed directly in front of the LED irradiation direction.
  • the intersection of the grid corresponds to each LED.
  • the light emitted by the LED to the side can be radiated through the gap of the grid plate, and the direct light of the LED is blocked by the intersection of the grid plate, and the direct light is directed. It is surrounded by the guidance, so that the light shining on the picture support plate is soft and even.
  • a small translucent plate, a convex lens or a concave lens may be arranged at the intersection of the grid plates to block and guide the direct light of the LED.
  • the light homogenizing device is a translucent plate 3 disposed directly in front of the LED 2 irradiation direction, and on the translucent plate A black wire mesh pattern is printed on the corresponding position of the LED, and the translucent plate can play a role of softening the light irradiated onto the picture support piece.
  • the black wire mesh pattern facing the LED can block the direct light of the LED. , and direct the direct light to the surrounding, so that the light shining on the screen support plate is soft and even.
  • the light-hooking device is a translucent plate 4 disposed directly in front of the LED 2 irradiation direction, and is disposed on the translucent plate.
  • the position corresponding to the LED is a concave lens structure, that is, the position of the translucent plate directly irradiated with the LED is a concave lens structure, and the other positions are translucent structures.
  • the translucent plate can play a role in softening the light that is incident on the picture support sheet.
  • the direct light of the LED can be guided around by the 1HJ lens structure facing the LED, so that the light irradiated onto the picture support plate is soft and uniform.
  • the light-shielding structure corresponding to the LED on the translucent plate may also be a convex lens structure, and may also function to guide the direct light of the LED to the periphery.
  • the invention also provides a light box, comprising a picture piece support plate disposed in a display direction of the light box, a plurality of LEDs disposed in the light box, a reflective device disposed between the LEDs, and a hook disposed in a direction of the light box display
  • the light-hooking device is provided with a light-shielding structure corresponding to the position of the LED to block the light directly emitted by the LED and to guide the surrounding light.
  • the light-shaping device in the light box can adopt the structural form of the above embodiments, and will not be described again herein; or any suitable structural form capable of achieving the object of the present invention.

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

Description

透射式背光源 LED灯箱匀光装置^箱 技术领域
本发明涉及一种照明设备的匀光装置， 尤其是透射式背光源 LED 灯箱 勾光装置； 还涉及一种具有上述勾光装置的灯箱。 背景技术
传统的广告灯箱的光源多釆用数个平行设置的灯管， 作为对传统灯箱的 改进， 现已釆用 LED作为透射式灯箱背光源。 但是由于 LED光源相互之间也 存在一定的间距， 因此在使用时， 灯箱画面也会出现光线不连续或不均匀的 现象， 即在 LED光源之间也存在暗区， 从而影响灯箱画面的展示效果。 对于釆用灯管作为光源的灯箱， 为了消除肋骨纹现象， 本申请人对传统 的灯箱进行了各种改进， 包括 1、 在灯箱灯管靠近背板的部分设置弧形的反 光板， 将灯管照射向背板的光线发射到灯管周边； 2、 在相邻两弧形反光板 之间设置连接两弧形反光板的反光角。
上述改进对于改善灯箱的展示效果都起到了一定的作用， 但是对于 LED 作为光源的灯箱， 由于 LED光源不同于灯管光源， 因此上述改进方案无法直 接适用于 LED作为光源的灯箱来消除灯箱画面上的暗区。
发明内容
本发明提供了一种透射式背光源 LED 灯箱匀光装置及灯箱， 能消除灯 箱画面上的暗区， 提高灯箱展示面上光照的均匀度， 使光线均匀柔和地照射 到画面支撑板上。
为实现上述目的 , 本发明提供了一种透射式背光源 LED灯箱匀光装置， 所述灯箱包括设置在灯箱展示方向的画片支撑板， 设置在所述灯箱内的若干 个 LED, 和设置于所述 LED之间的反光装置， 所述匀光装置设置在灯箱展 示方向上， 所述勾光装置对应于所述 LED 的位置设有遮光结构， 以对所述 LED直射出的光线进行遮挡并向四周疏导。 所述 LED 阵列排列， 所述匀光装置为经纬编织的网格板， 所述遮光结 构为与所述 LED对应的所述网格板的交叉点。
所述网格板的交叉点上设有半透明遮光片、 凹透镜或凸透镜。
所述匀光装置为半透明板， 所述遮光结构为与所述 LED对应的印制于 所述半透明板上的黑色丝网状图案。
所述勾光装置为半透明板， 所述遮光结构为在所述半透明板上形成的与 所述 LED对应的凹透镜结构或凸透镜结构。
本发明还提供一种灯箱， 包括设置在灯箱展示方向的画片支撑板， 设置 在所述灯箱内的若干个 LED, 设置于所述 LED之间的反光装置， 和设置在 灯箱展示方向上的勾光装置， 所述勾光装置对应于所述 LED 的位置设有遮 所述 LED 阵列排列， 所述匀光装置为经纬编织的网格板， 所述遮光结 构为与所述 LED对应的所述网格板的交叉点。
所述网格板的交叉点上设有半透明遮光片、 凹透镜或凸透镜。
所述匀光装置为半透明板， 所述遮光结构为与所述 LED对应的印制于 所述半透明板上的黑色丝网状图案。
所述勾光装置为半透明板， 所述遮光结构为在所述半透明板上形成的与 所述 LED对应的凹透镜结构或凸透镜结构。
本发明的优点在于： 本发明根据 LED 光源的特点， 在灯箱的展示方向 上设置勾光装置， 仅在对应于 LED的位置上设置遮光结构， 以对 LED直射 出的光线进行遮挡并向四周疏导， 使光线柔和均匀地照射到画面展示板上。
尤其是釆用了经纬编织的网格板、 以及具有黑色丝网状图案或凹、 凸透 镜结构的半透明板等具体结构的勾光装置， 结构简单， 制作成本低， 遮光及 导光的效果好。 附图说明
图 1为本发明的匀光装置的一个实施例的结构示意图；
图 2为本发明的匀光装置的另一个实施例的结构示意图； 图 3为本发明的匀光装置的又一实施例的结构示意图。 具体实施方式 下面参照附图对本发明进行详细说明。
本发明主旨是提供一种透射式背光源 LED 灯箱匀光装置， 该灯箱包括 设置在灯箱展示方向的画片支撑板， 背光源釆用设置在所述灯箱内的若干个 LED,在光源 LED之间设置有反光装置，所述匀光装置设置在灯箱展示方向 上， 所述勾光装置对应于所述 LED的位置设有遮光结构， 以对所述 LED直 射出的光线进行遮挡并向四周疏导。
如图 1所示， 为本发明的匀光装置的一实施例， 在该例中， LED 2阵列 排列， 匀光装置为经纬编织的网格板 1 , 设置在 LED照射方向的正前方， 网 格板的交叉点对应于各 LED,通过这种结构， LED射向侧面的光可以通过网 格板的空隙处照射出去， LED 直射的光由网格板的交叉点遮挡， 并将直射 光向四周疏导， 从而使照射到画面支撑板上的光线柔和均匀。 为了进一步增 加勾光效果，还可以在网格板的交叉点上设置小半透明板、凸透镜或凹透镜， 以将 LED直射光进行遮挡和疏导。
如图 2所示， 为本发明的匀光装置的另一实施例， 在该例中， 匀光装置 为半透明板 3 ,设置在 LED 2照射方向的正前方，在该半透明板上与所述 LED 对应位置处印制有黑色丝网状图案， 半透明板可以起到使照射到画面支撑片 上的光线柔和的作用， 通过与 LED正对的黑色丝网状图案可以遮挡 LED直 射的光线， 并将直射光向四周疏导， 从而使照射到画面支撑板上的光线柔和 均匀。
如图 3所示， 为本发明的勾光装置的又一实施例， 在该例中， 勾光装置 为半透明板 4,设置在 LED 2照射方向的正前方，在该半透明板上与所述 LED 对应的位置为凹透镜结构， 即该半透明板上与 LED 直接光照射的位置为凹 透镜结构， 而其它位置都为半透明结构。 半透明板可以起到使照射到画面支 撑片上的光线柔和的作用， 通过与 LED正对的 1HJ透镜结构可以将 LED直射 的光线向四周疏导， 从而使照射到画面支撑板上的光线柔和均匀。 在其它实 施例中， 在该半透明板上与 LED对应的遮光结构也可以为凸透镜结构， 同 样可以起到将 LED直射的光线向四周疏导的作用。
本发明还提供一种灯箱， 包括设置在灯箱展示方向的画片支撑板， 设置 在所述灯箱内的若干个 LED, 设置于所述 LED之间的反光装置， 和设置在 灯箱展示方向上的勾光装置， 所述勾光装置对应于所述 LED 的位置设有遮 光结构， 以对所述 LED 直射出的光线进行遮挡并向四周疏导。 在该灯箱中 的匀光装置可釆用上述各实施例的结构形式， 在此不再复述； 或者是能实现 本发明的发明目的的任何合适的结构形式。
前面描述的仅为本发明的具体实施方式， 本发明并不仅限于此， 任何关 于本发明的变体或对其所进行的改进以及调整都在本发明所要求保护的范 围之内。

Claims

权 利 要 求 书
1、 一种透射式背光源 LED灯箱勾光装置， 所述灯箱包括设置在灯箱 展示方向的画片支撑板， 设置在所述灯箱内的若干个 LED, 和设置于所述 LED之间的反光装置， 所述匀光装置设置在灯箱展示方向上， 其特征在于， 所述勾光装置对应于所述 LED的位置设有遮光结构， 以对所述 LED直射出 的光线进行遮挡并向四周疏导。
2、 如权利要求 1所述的透射式背光源 LED灯箱匀光装置， 其特征在 于， 所述 LED 阵列排列， 所述匀光装置为经纬编织的网格板， 所述遮光结 构为与所述 LED对应的所述网格板的交叉点。
3、 如权利要求 2所述的透射式背光源 LED灯箱匀光装置， 其特征在 于， 所述网格板的交叉点上设有半透明遮光片、 凹透镜或凸透镜。
4、 如权利要求 1所述的透射式背光源 LED灯箱匀光装置， 其特征在 于， 所述匀光装置为半透明板， 所述遮光结构为与所述 LED对应的印制于 所述半透明板上的黑色丝网状图案。
5、 如权利要求 1所述的透射式背光源 LED灯箱匀光装置， 其特征在 于， 所述勾光装置为半透明板， 所述遮光结构为在所述半透明板上形成的与 所述 LED对应的凹透镜结构或凸透镜结构。
6、 一种灯箱， 包括设置在灯箱展示方向的画片支撑板， 设置在所述 灯箱内的若干个 LED, 设置于所述 LED之间的反光装置， 和设置在灯箱展 示方向上的勾光装置， 其特征在于， 所述勾光装置对应于所述 LED 的位置
7、 如权利要求 6所述的灯箱， 其特征在于， 所述 LED阵列排列， 所 述匀光装置为经纬编织的网格板， 所述遮光结构为与所述 LED对应的所述 网格板的交叉点。
8、 如权利要求 7所述的透射式背光源 LED灯箱匀光装置， 其特征在 于， 所述网格板的交叉点上设有半透明遮光片、 凹透镜或凸透镜。
9、 如权利要求 6所述的灯箱， 其特征在于， 所述勾光装置为半透明 板， 所述遮光结构为与所述 LED对应的印制于所述半透明板上的黑色丝网 状图案。
10、 如权利要求 6所述的灯箱， 其特征在于， 所述勾光装置为半透明 板， 所述遮光结构为在所述半透明板上形成的与所述 LED对应的 1HJ透镜结 构或凸透镜结构。
PCT/CN2009/075516 2009-03-24 2009-12-11 透射式背光源led灯箱匀光装置及灯箱 WO2010108370A1 (zh)

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CN104214719B (zh) * 2013-05-29 2016-12-28 海洋王（东莞）照明科技有限公司 投光灯及其内置防眩格栅
CN107248380A (zh) * 2017-07-21 2017-10-13 佛山杰致信息科技有限公司 Led展示幕墙

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