CN102080777A - LED (Light-Emitting Diode) plane light source and method for increasing light guiding efficiency thereof - Google Patents
LED (Light-Emitting Diode) plane light source and method for increasing light guiding efficiency thereof Download PDFInfo
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- CN102080777A CN102080777A CN2010105669428A CN201010566942A CN102080777A CN 102080777 A CN102080777 A CN 102080777A CN 2010105669428 A CN2010105669428 A CN 2010105669428A CN 201010566942 A CN201010566942 A CN 201010566942A CN 102080777 A CN102080777 A CN 102080777A
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Abstract
The invention relates to an LED (Light-Emitting Diode) plane light source and a method for increasing the light guiding efficiency thereof, belonging to the technical field of light sensing engineering application. The LED plane light source is characterized in that a light reflection layer is arranged between the side of a light guiding plate and a PCB (Printed Circuit Board), a light outlet is prearranged at a position on the light reflection layer corresponding to LED light sources, and the PCB, the light reflection layer and the light guiding plate clings to each other in sequence; and the LED light sources respectively arranged at two opposite sides of the light guiding plate are arranged in ways of mutual cross and ectopic complementation. One side of each of the LED light sources is additionally provided with the light reflection layer on which the light outlet is prearranged, thus the light reflection at the side of the light guiding plate is avoided, light emitted by an LED is directly led out through the light outlet by the light guiding plate, and the light incidence efficiency is increased; the LED light sources are arranged in ways of mutual cross and ectopic complementation, thus, the condition that the LED absorbs the light from the opposite LED per se is avoided, and the light guiding efficiency is increased; and on the basis of ensuring same brightness, the consumption of the LEDs can be reduced and the lost can be lowered.
Description
Technical field
The invention belongs to light sensing engineering applied technical field, relate to the method for a kind of LED planar light source and raising leaded light efficient thereof.
Background technology
LED is a kind of semiconductor light-emitting-diode that electric energy is converted into visible light, because LED has the advantage of light efficiency height, long service life, radiationless and low-power consumption etc., it is a kind of environment-friendly and green lighting source, so various LED light fixture development rapidly, uses on a large scale in daily life.In development, the application of plane lamp, cause that too people extensively pay attention to, existing how tame manufacturer is in research and development and the production of being engaged in LED plane lamp, LED ultrathin lamp box.
The LED planar light source mainly is made up of led light source, LGP and frame etc., has that volume is little, an advantage such as thin thickness, free from glare and long service life, is well suited for indoor use.Existing LED planar light source has the one-sided luminous intensity distribution of LGP, the secondary light-distribution of employing method is also arranged, promptly led light source is set respectively in the relative two sides of LGP, but when the light that LED sends arrives the LGP side, can produce total reflection, lose a part of incident light, again can be when seeing through LGP arrival opposite by the LED on opposite, and the PCB circuit board that fixed L ED is set absorbs a part of light, equally, the LED on opposite shines on the LED and PCB circuit board of this one side through the conduction of LGP light, also can cause the further loss of light, make the luminous efficiency of whole light fixture reduce, influence the brightness of light fixture.In summary, how to improve the leaded light efficient of LED plane lamp, the loss that reduces light is an industry common concern and the difficult problem endeavouring to capture.
Summary of the invention
The objective of the invention is: a kind of smooth conduction loss is few, leaded light efficient is high LED planar light source is provided and improves the method for leaded light efficient.
For achieving the above object, the technical scheme that adopts is: a kind of LED planar light source, comprise LGP, place the led light source of the relative two sides of described LGP and the PCB circuit board of welding fixed L ED light source respectively, it is characterized in that: be equipped with one deck reflector layer between described LGP side and the described PCB circuit board, preset light-emitting window with described led light source corresponding position on the described reflector layer, and PCB circuit board-reflector layer-LGP fits tightly mutually successively; Place the led light source of the relative two sides of described LGP respectively, mutually intersection, the complementary setting of dystopy.
Described led light source is the lamp pearl of LED.
Described reflector layer is the PET optical reflection film.
Improve the method for LED planar light source leaded light efficient, it is characterized in that: 1) in light source one side of LED, increase one deck reflector layer between the PCB circuit board of welding fixed L ED light source and the LGP, on described reflector layer, preset light-emitting window with described led light source corresponding position, PCB circuit board-reflector layer-LGP is fitted tightly successively mutually, the light that LED sends is derived by LGP directly by light-emitting window, and the minimizing LGP side of maximum possible absorbs the light loss that causes; 2) place the led light source of the relative two sides of LGP to adopt intersection, the setting of dystopy complement mode mutually, room between the led light source of the corresponding right side of led light source on the left of being about to, room between the led light source correspondence left side led light source on right side, like this LED just can the LED of direct projection offside on, avoid the light absorption of LED own, increase leaded light efficient.
Good effect of the present invention is: adopt reflector layer in led light source one side, the light that LED is sent is directly derived by LGP by the light-emitting window that presets, and the minimizing LGP ambient light of maximum possible absorbs, and improves light incident efficient; Place the led light source of the relative two sides of LGP to adopt intersection, the setting of dystopy complement mode mutually, light absorption itself that avoid offside LED to cause increases leaded light efficient.On the basis that guarantees same brightness, can reduce the usage quantity of LED, play the effect of saving cost.
Description of drawings
The invention will be further described below in conjunction with description of drawings and the specific embodiment.
Fig. 1 is a structural representation of the present invention;
Fig. 2 be among Fig. 1 A to PCB circuit board, led light source and reflector layer syndeton schematic diagram.
Among the figure, 1,1 '-the PCB circuit board; 2,2 '-led light source (lamp pearl); 3,3 '-reflector layer; 4,4 '-preset light-emitting window; The 5-LGP.
The specific embodiment
By as seen illustrated in figures 1 and 2, a kind of LED planar light source, comprise LGP 5, the PCB circuit board 1 that places the led light source 2 of described LGP 5 relative two sides and weld fixed L ED light source 2 respectively, it is characterized in that: be equipped with one deck reflector layer 3 between described LGP 5 sides and the described PCB circuit board 1, preset light-emitting window 4 with described led light source 2 corresponding positions on the described reflector layer 3, and PCB circuit board 1-reflector layer 3-LGP 5 fits tightly mutually successively; Place the led light source 2 of described LGP 5 relative two sides respectively, mutually intersection, the complementary setting of dystopy.
Described led light source 2 is the lamp pearl of LED.
Described reflector layer 3 is the PET optical reflection film.
Improve the method for LED planar light source leaded light efficient, it is characterized in that: 1) in led light source 2 one sides, increase one deck reflector layer 3 between the PCB circuit board 1 of welding fixed L ED light source 2 and the LGP 5, on described reflector layer 3, preset light-emitting window 4 with described led light source 2 relevant positions, PCB circuit board 1-reflector layer 3-LGP 5 is fitted tightly mutually successively, the light that LED sends is directly by presetting light-emitting window 4, derive by LGP 5, minimizing LGP 5 sides of maximum possible absorb the light loss that causes, and improve light incident efficient; 2) place that the led light source 2 of LGP 5 relative two sides and led light source 2 ' employing intersect mutually, the setting of dystopy complement mode, be about to the led light source 2 corresponding right side led light sources 2 in left side ' between the room, room between the led light source 2 on right side ' correspondence left side led light source 2, the light direct projection of avoiding conducting by LGP 5 is to the LED that places offside, reduce the light absorption of LED own, increase leaded light efficient.
Exchange the effect of high light line incident efficient for checking the present invention, under the situation of other conditions that do not change the planar light source light fixture, led light source 2 one sides of mentioning in the present invention only, add the PET material LED optical reflection film E20#50 that uses Cixi Feng De macromolecular material Co., Ltd to produce in this experiment of reflector layer 3(that is reserved with light-emitting window 4), reflector layer 3 front and back are added in test, whole luminous flux contrast.Get the experiment of 3 groups of planar light source samples, corresponding 3 PET optical reflection films, every group of sample test 2 times, the luminous flux before and after the optical reflection film is added in test record, and experimental result shows.The present invention can make photometry formula illuminating product, and light feeds penetrates the optical efficiency raising more than 10%.
Claims (4)
1. LED planar light source, comprise LGP, place the led light source of the relative two sides of described LGP and the PCB circuit board of welding fixed L ED light source respectively, it is characterized in that: be equipped with one deck reflector layer between described LGP side and the described PCB circuit board, preset light-emitting window with described led light source corresponding position on the described reflector layer, and PCB circuit board-reflector layer-LGP fits tightly mutually successively; Place the led light source of the relative two sides of described LGP respectively, mutually intersection, the complementary setting of dystopy.
2. according to the described a kind of LED planar light source of claim 1, it is characterized in that: described led light source is a LED lamp pearl.
3. according to the described a kind of LED planar light source of claim 1, it is characterized in that: described reflector layer is the PET optical reflection film.
4. the described a kind of LED planar light source of claim 1 improves the method for leaded light efficient, it is characterized in that: 1) in light source one side of LED, increase one deck reflector layer between the PCB circuit board of welding fixed L ED light source and the LGP, on described reflector layer, preset light-emitting window with described led light source corresponding position, PCB circuit board-reflector layer-LGP is fitted tightly mutually successively, the light that LED sends directly passes through light-emitting window, derived by LGP, the minimizing LGP ambient light of maximum possible absorbs the light loss that causes;
2) place the led light source of the relative two sides of LGP to adopt intersection, the setting of dystopy complement mode mutually, room between the led light source of the corresponding right side of led light source on the left of being about to, room between the led light source correspondence left side led light source on right side, like this LED just can the LED of direct projection offside on, avoid the light absorption of LED own, increase leaded light efficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105669428A CN102080777A (en) | 2010-12-01 | 2010-12-01 | LED (Light-Emitting Diode) plane light source and method for increasing light guiding efficiency thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105669428A CN102080777A (en) | 2010-12-01 | 2010-12-01 | LED (Light-Emitting Diode) plane light source and method for increasing light guiding efficiency thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102080777A true CN102080777A (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105669428A Pending CN102080777A (en) | 2010-12-01 | 2010-12-01 | LED (Light-Emitting Diode) plane light source and method for increasing light guiding efficiency thereof |
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| CN (1) | CN102080777A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047610A (en) * | 2013-01-18 | 2013-04-17 | 昆山市诚泰电气股份有限公司 | Reflection structure of light-emitting diode (LED) plane light source |
| CN103185237A (en) * | 2011-12-27 | 2013-07-03 | 东贝光电科技股份有限公司 | Side-in type plane light-emitting module |
| CN104335087A (en) * | 2011-12-30 | 2015-02-04 | 可隆工业株式会社 | Light guide plate and method of manufacturing the same |
-
2010
- 2010-12-01 CN CN2010105669428A patent/CN102080777A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185237A (en) * | 2011-12-27 | 2013-07-03 | 东贝光电科技股份有限公司 | Side-in type plane light-emitting module |
| CN103185237B (en) * | 2011-12-27 | 2015-04-22 | 东贝光电科技股份有限公司 | Side-in type plane light-emitting module |
| CN104335087A (en) * | 2011-12-30 | 2015-02-04 | 可隆工业株式会社 | Light guide plate and method of manufacturing the same |
| CN103047610A (en) * | 2013-01-18 | 2013-04-17 | 昆山市诚泰电气股份有限公司 | Reflection structure of light-emitting diode (LED) plane light source |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110601 |