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Columnar luminous module

A light-emitting module and columnar technology, applied in the field of columnar light-emitting modules, can solve the problems of light source efficiency reduction and light leakage

Inactive Publication Date: 2012-03-14
DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the light entering one end of the light guide rod exits from the other end, it is reflected back into the light guide rod and leaks directly from the non-light-emitting surface.
Generally speaking, the amount of light leakage caused by the two ends of the light guide rod accounts for about 24% of the light extraction efficiency, resulting in a decrease in the efficiency of the light source

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] Please refer to figure 1 , which shows a cross-sectional view of the columnar light-emitting module according to the first embodiment of the present invention. The columnar light emitting module 100 includes a light guide rod 102 , a first sleeve 104 , a second sleeve 106 , a first light source 108 , a second light source 110 , and several first diffusion structures 124 .

[0027] The light guide rod 102 has a first end 112 and a second end 114 corresponding to each other. The first sleeve 104 accommodates the first end 112 of the light guide rod 102 and has a first bottom surface 118 . The second sleeve 106 accommodates the second end 114 of the light guide rod 102 and has a second bottom surface 122 .

[0028] The first light source 108 and the second light source 110 respectively pass through the first end 112 and the second end 114 and are arranged on the first bottom surface 118 and the second bottom surface 122 for emitting light into the end surface of the firs...

no. 2 example

[0033] Please refer to figure 2 (the second sleeve and the light guide rod are not shown), which shows the side view of the columnar light emitting module according to the second embodiment of the present invention. In order to avoid too complicated diagram, figure 2 The columnar light emitting module does not show the second sleeve and light guide rod. The parts in the second embodiment that are the same as those in the first embodiment use the same reference numerals, which will not be repeated here. The columnar light emitting module 200 of the second embodiment is different from the columnar light emitting module 100 of the first embodiment in that the columnar light emitting module 200 further includes a first reflective sheet 228 and a second reflective sheet (not shown).

[0034] Although figure 2 Not shown, but the columnar light-emitting module 200 of this embodiment further includes figure 1 The light guide rod 102, the second sleeve 106, and the second light ...

no. 3 example

[0041] Please refer to image 3 (the second sleeve and the light guide rod are not shown), which shows the side view of the columnar light emitting module according to the third embodiment of the present invention. In order to avoid too complicated diagram, image 3 The columnar light emitting module does not show the second sleeve and light guide rod. The parts in the third embodiment that are the same as those in the second embodiment use the same reference numerals, which will not be repeated here. The columnar light emitting module 300 of the third embodiment is different from the columnar light emitting module 200 of the second embodiment in that the first reflective sheet 328 and the second reflective sheet of the columnar light emitting module 300 further include several second diffusion structures 332, which The light incident on the second diffusion structure 332 is used to diffuse to the light guide rod 102 .

[0042] Although image 3 Not shown, but the columnar...

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Abstract

The invention discloses a columnar luminous module which comprises a light-guiding rod, a first sleeve, a second sleeve, at least two light sources and a plurality of first diffusion structures, wherein the light-guiding rod is provided with a first end and a second end which are corresponding; the first sleeve is used for containing the first end of the light-guiding rod and is provided with a first bottom surface; the second sleeve is used for containing the second end of the light-guiding rod and is provided with a second bottom surface; the two light sources respectively face the first end and the second end and penetrate the first bottom surface and the second bottom surface, and the two light sources are used for sending rays to enter the light-guiding rod; and the first diffusion structures are respectively arranged on the first bottom surface and the second bottom surface, and are used for guiding the rays to the light-guiding rod.

Description

technical field [0001] The invention relates to a columnar light emitting module, and in particular to a columnar light emitting module with low light leakage and high light extraction efficiency. Background technique [0002] A columnar light emitting diode (LED, Light Emitting Diode) module is a commonly used columnar light emitting module at present. In a traditional columnar light emitting module, a light guide rod and two light sources are included. The two light sources are respectively arranged adjacent to the two ends of the light guide rod, and are used to emit light from the two ends of the light guide rod into the interior of the light guide rod. [0003] However, when the light entering one end of the light guide rod is emitted from the other end, it is reflected back to the inside of the light guide rod and leaks directly from the non-light-emitting surface. Generally speaking, the amount of light leaked from the two ends of the light guide rod accounts for ab...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V13/00F21V19/00F21V17/00
CPCF21S8/081F21Y2115/10
Inventor 黄国瑞叶志庭
Owner DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY