CN102901008A - Light-guide-plate-free edge-type LED (light-emitting diode) plane light source device - Google Patents
Light-guide-plate-free edge-type LED (light-emitting diode) plane light source device Download PDFInfo
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- CN102901008A CN102901008A CN201210333539XA CN201210333539A CN102901008A CN 102901008 A CN102901008 A CN 102901008A CN 201210333539X A CN201210333539X A CN 201210333539XA CN 201210333539 A CN201210333539 A CN 201210333539A CN 102901008 A CN102901008 A CN 102901008A
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Abstract
The invention discloses a light-guide-plate-free edge-type LED (light-emitting diode) plane light source device, which comprises an edge-type LED luminous body module, wherein a light source side reflecting plate is arranged by forming an 90-degree angle with the edge-type LED luminous body module; positive scattering plates are arranged on the edge-type LED luminous body module and the light source side reflecting plate; a free-form surface type arc reflecting plate is arranged below the edge-type LED luminous body module and the light source side reflecting plate; a PCB (printed circuit board) is arranged on the LED luminous body module; an LED luminous body array is arranged on the PCB; and the curved surface of the free-form surface type arc reflecting plate consists of a convex surface 7 and a concave surface 8 in a smoothing manner. The device can perform illumination in a large area by utilizing the light reflection action of the convex surface and the concave surface of the reflecting plate, and has the characteristics of uniform illumination, high efficiency, high reliability, long service life, low cost, simple process, energy conservation and environment friendliness.
Description
Technical field
The present invention relates to a kind of LED planar light source device, particularly a kind of without LGP side type LED planar light source device.
Background technology
At present the backlight of liquid crystal indicator can be divided into the LED(light emitting diode substantially) and the CCFL(cold-cathode fluorescence lamp) two kinds.Because cold-cathode fluorescence lamp is not planar light source, in order to realize uniform brightness output, most of LCD is when showing complete black complete white picture, and the luminance difference at screen edge and center is fairly obvious.In essence, liquid crystal also is a kind of of planar light source with the LED-backlit source.CCFL is subject to the challenge of LED in recent years.Mainly be that CCFL is considered to inadequate environmental protection, mercurous; Color representation is inadequate, can only reach 70～80% of NTSC.In addition, for large television screen, CCFL is not only voltage and increases, and the processing of lengthening pipe is also had any problem.Single-point is luminous, power consumption is low because adopting for LED, adds the advantages such as long and short little frivolous, tool environmental protection of life-span so that at present LED replace gradually CCFL be widely used in, small size panel backlight.In addition, because the color saturation of LED can reach near 100%, be much better than the performance level of CCFL general 70～85%.
The LED planar light source is realized dividing according to technology, mainly can be divided into: full run-down type planar light source and side light type planar light source.Traditional side type LED planar light source mainly is comprised of led light source, LGP, reflecting plate and optical diffusion etc.Owing to adopt LGP to realize the even derivation of light, not only increase the manufacturing cost of whole light source, and increased the weight of whole light source, so that lighting device illumination is even not, reliability is general.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the object of the invention is to propose a kind of without LGP side type LED planar light source device, can utilize reflecting plate convex surface and concave surface that reflection of light is acted on the larger area and throw light on, have that illumination is even, efficient is high, good reliability, the life-span is long, cost is low, technique is simple, the characteristics of energy-conserving and environment-protective.
To achieve these goals, technical scheme of the present invention is achieved in that
A kind of without LGP side type LED planar light source device, comprise two parallel side type LED illuminator modules 1, also comprise two parallel light source side reflecting plates 2, side type LED illuminator module 1 consists of rectangle frame with light source side reflecting plate 2, one side at rectangle frame is provided with front scatter plate 3, another side is provided with free form surface formula arc reflection plate 4, and described side type LED illuminator module 1 is comprised of pcb board 5 and the LED luminous body array 6 that is arranged on the pcb board 5.
The curved surface of described free form surface formula arc reflection plate 4 is smoothly joined by convex surface 7 and concave surface 8 and forms.
Because the present invention does not need the higher LGP of cost, replace free form surface formula arc reflection plate, the curved surface of this reflecting plate is by convex surface and concave surface is smooth forms, can utilize reflecting plate convex surface and concave surface that reflection of light is acted on the larger area throws light on, have better color developing and reaction speed faster, can satisfy various colour developing requirements as illumination, have that illumination is even, efficient is high, good reliability, the life-span is long, cost is low, technique is simple, the characteristics of energy-conserving and environment-protective.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is side type LED illuminator modular structure schematic diagram of the present invention.
Fig. 3 is free form surface formula arc reflection plate structure schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are described in further detail.
Referring to Fig. 1,2,3, a kind of without LGP side type LED planar light source device, comprise two parallel side type LED illuminator modules 1, also comprise two parallel light source side reflecting plates 2, side type LED illuminator module 1 consists of rectangle frame with light source side reflecting plate 2, one side at rectangle frame is provided with front scatter plate 3, and another side is provided with free form surface formula arc reflection plate 4, and described side type LED illuminator module 1 is comprised of pcb board 5 and the LED luminous body array 6 that is arranged on the pcb board 5.The curved surface of described free form surface formula arc reflection plate 4 is smoothly joined by convex surface 7 and concave surface 8 and forms.
1 isolychn of side type LED illuminator module is reflected to form certain optically focused effect by light source side reflecting plate 2, between front scatter plate 3 and free form surface formula arc reflection plate 4, utilize the reflex of 8 pairs of incident raies of convex surface 7 and concave surface different, form reflection ray, can accomplish that illumination is even in larger area, penetrate by front scatter plate 3, front scatter plate 3 is positioned at the light direction of light supply apparatus, be used for improving the brightness in product front, it can allow the distribution of light more even, can't see the shadow of pip from the front.
Claims (2)
1. one kind without LGP side type LED planar light source device, comprise two parallel side type LED illuminator modules (1), it is characterized in that, also comprise two parallel light source side reflecting plates (2), side type LED illuminator module (1) consists of rectangle frame with light source side reflecting plate (2), one side at rectangle frame is provided with front scatter plate (3), another side is provided with free form surface formula arc reflection plate (4), and described side type LED illuminator module (1) is comprised of pcb board (5) and the LED luminous body array (6) that is arranged on the pcb board (5).
2. according to claim 1ly a kind ofly it is characterized in that without LGP side type LED planar light source device the curved surface of described free form surface formula arc reflection plate (4) is smoothly joined by convex surface (7) and concave surface (8) and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210333539XA CN102901008A (en) | 2012-09-11 | 2012-09-11 | Light-guide-plate-free edge-type LED (light-emitting diode) plane light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210333539XA CN102901008A (en) | 2012-09-11 | 2012-09-11 | Light-guide-plate-free edge-type LED (light-emitting diode) plane light source device |
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| Publication Number | Publication Date |
|---|---|
| CN102901008A true CN102901008A (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210333539XA Pending CN102901008A (en) | 2012-09-11 | 2012-09-11 | Light-guide-plate-free edge-type LED (light-emitting diode) plane light source device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110067966A (en) * | 2019-04-12 | 2019-07-30 | 浙江楚乔电气有限公司 | A kind of lateral emitting panel light and preparation method thereof |
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
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| US20050024845A1 (en) * | 2003-07-30 | 2005-02-03 | Mitsubishi Denki Kabushiki Kaisha | Plane light source device and display device provided with the same |
| CN2784972Y (en) * | 2005-02-21 | 2006-05-31 | 蔡镇州 | Improved LCD back light module structure |
| KR20070034947A (en) * | 2005-09-26 | 2007-03-29 | 하리손 도시바 라이팅구 가부시키가이샤 | Backlight system |
| CN201795372U (en) * | 2010-04-21 | 2011-04-13 | 广东昭信光电科技有限公司 | LED backlight structure with inverted light source and using freeform surface reflector |
| US20110211335A1 (en) * | 2010-12-06 | 2011-09-01 | Se Jin Ko | Backlight unit |
| US20120134136A1 (en) * | 2011-11-16 | 2012-05-31 | Jung In Seo | Backlight unit, display using the same and lighting system including the same |
| CN102620208A (en) * | 2012-03-29 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
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2012
- 2012-09-11 CN CN201210333539XA patent/CN102901008A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050024845A1 (en) * | 2003-07-30 | 2005-02-03 | Mitsubishi Denki Kabushiki Kaisha | Plane light source device and display device provided with the same |
| CN2784972Y (en) * | 2005-02-21 | 2006-05-31 | 蔡镇州 | Improved LCD back light module structure |
| KR20070034947A (en) * | 2005-09-26 | 2007-03-29 | 하리손 도시바 라이팅구 가부시키가이샤 | Backlight system |
| CN1940679A (en) * | 2005-09-26 | 2007-04-04 | 哈利盛东芝照明株式会社 | Backlight system |
| CN201795372U (en) * | 2010-04-21 | 2011-04-13 | 广东昭信光电科技有限公司 | LED backlight structure with inverted light source and using freeform surface reflector |
| US20110211335A1 (en) * | 2010-12-06 | 2011-09-01 | Se Jin Ko | Backlight unit |
| US20120134136A1 (en) * | 2011-11-16 | 2012-05-31 | Jung In Seo | Backlight unit, display using the same and lighting system including the same |
| CN102620208A (en) * | 2012-03-29 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
| CN110067966A (en) * | 2019-04-12 | 2019-07-30 | 浙江楚乔电气有限公司 | A kind of lateral emitting panel light and preparation method thereof |
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Application publication date: 20130130 |