CN102141647A - Light guide plate and light-emitting diode (LED) lamp containing same - Google Patents
Light guide plate and light-emitting diode (LED) lamp containing same Download PDFInfo
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- CN102141647A CN102141647A CN2011101141770A CN201110114177A CN102141647A CN 102141647 A CN102141647 A CN 102141647A CN 2011101141770 A CN2011101141770 A CN 2011101141770A CN 201110114177 A CN201110114177 A CN 201110114177A CN 102141647 A CN102141647 A CN 102141647A
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- led light
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Abstract
The invention relates to a light guide plate which comprises a transparent substrate, an incident surface and an emergent surface. The incident surface is formed on the transparent substrate, a step part used for accommodating light sources is formed at the edge of the incident surface, the emergent surface is formed on the transparent substrate and is opposite to the incident surface, and a reversed-frustum groove and an arc bulge arranged at the bottom of the reversed-frustum groove are formed on the emergent surface. In the light guide plate, the edge of the incident surface is provided with the step part, the step part and the middle part of the incident surface can be simultaneously provided with the light sources to form an incident mode coexisting a side light mode with a straight light mode, so that the utilization ratio of the light sources is improved and more uniform emergent light brightness is achieved; moreover, the reversed-frustum groove and the arc bulge arranged at the bottom of the reversed-frustum groove are formed on the emergent surface, the reversed-frustum groove is used for diffusing light rays, and the arc bulge is used for gathering the light rays to make polychromatic light rays fully mixed and decrease a glaring phenomenon. The invention also provides a light-emitting diode (LED) lamp containing the light guide plate.
Description
[technical field]
The present invention relates to a kind of illuminations, particularly relate to a kind of light guide plate and contain the LED light fixture of this light guide plate.
[background technology]
Environmental protection, the energy-conservation main trend that has become various now electronic product reforms.LED has been widely used in fields such as various indications, demonstration, construction landscape illumination with characteristics such as its energy-saving and environmental protection, life-span length.Yet, for the LED light fixture, white light LEDs light fixture particularly, the colour rendering of LED is the technical bottleneck of restriction its inlet chamber intraoral illumination, particularly reading lighting, medical illumination.Improving light utilization efficiency, reducing cost, reach the enhancing colour rendering is the key of LED lamp illumination.
For the form of LED illuminating lamp, mainly contain two kinds of light-emitting modes of direct-injection type and side-light type.
Direct-injection type LED light fixture technology is simple, does not need light guide plate, led array to place the light fixture bottom usually, and the light that sends from LED penetrates or directly penetrates through lampshade, because the lighting angle of LED lamp self, the direct-injection type lamp is easy to generate dazzle, is difficult to be applied to illumination.In addition, the thickness of straight-down negative led light source is by the distance decision of light fixture bottom and scatter plate, and thickness is thick more usually, and the optical uniformity of led light source is just good more, but light utilization efficiency reduces, therefore product is comparatively heavy, and the energy consumption height, and price is more expensive, thickness hour, the optical uniformity variation is easy to generate dizzyly, is difficult to use in illumination.
Side-light type LED light fixture, its advantage are to realize area source, evenly bright dipping, but, make light in light guide plate, constantly reflect owing to adopted the principle of reflection of light guide plate, the normal light utilization has only 60%～80%, on the other hand, the difficult control of the homogeneity of light.The homogeneity of side-light type led light source illuminating lamp depends primarily on the site design on the light guide plate, and the light guide plate size is big more, the difficult more realization of homogeneity, and light utilization efficiency is low more.
[summary of the invention]
In view of above-mentioned condition, be necessary to provide the more weak light guide plate of a kind of light source utilization factor height and glare phenomenon and contain the LED light fixture of this light guide plate.
A kind of light guide plate comprises:
Transparent base;
Incidence surface is formed on this transparent base, and the edge of this incidence surface is formed with the stage portion that is used to accommodate light source; And
Exiting surface is formed on this transparent base and relative with this incidence surface, and this exiting surface is formed with the reverse frustoconic groove and is positioned at the arc convex of this reverse frustoconic bottom portion of groove.
Further, the middle part of this incidence surface is provided with a plurality of scattering netted dots that the space is provided with.
Further, this arc convex is semi-cylindrical hill or half elliptic projection.
Further, this incidence surface is a rectangle, this stage portion be formed in the relative both sides of this incidence surface and the drift angle place one of at least.
Further, this stage portion comprises first step face that links to each other with this incidence surface and the second step face that links to each other and parallel with this exiting surface with this first step face, and this first step face is arc or serrate.
A kind of LED light fixture comprises:
Light guide plate comprises:
Transparent base;
Incidence surface is formed on this transparent base, and the edge of this incidence surface is formed with the stage portion that is used to accommodate light source;
Exiting surface is formed on this transparent base and relative with this incidence surface, and this exiting surface is formed with the reverse frustoconic groove and is positioned at the arc convex of this reverse frustoconic bottom portion of groove;
First led light source, it is contained in this stage portion; And
Second led light source, it is arranged on this incidence surface.
Further, this second led light source is a plurality of, and is circular array or rectangular array is arranged.
Further, this first led light source is the red-light LED light source, and this second led light source is a white LED light source.
Further, this incidence surface is provided with a plurality of fixed legs that are used for fixing this LED light fixture.
Further, this incidence surface is provided with a plurality of scattering netted dots that the space is provided with, and the distribution density of these a plurality of scattering netted dots is along with reducing apart from increase with this second led light source.
The light guide plate of above-mentioned LED light fixture is provided with stage portion at the edge of incidence surface, can light source be set simultaneously in the stage portion of light guide plate and the middle part of incidence surface, the incident mode that forms side-light type and straight-down negative and deposit, the utilization factor that improves light source makes emitting brightness more even simultaneously.And light guide plate is formed with the reverse frustoconic groove and is positioned at the arc convex of reverse frustoconic bottom portion of groove at exiting surface, and the reverse frustoconic groove is used to spread light, and arc convex is used to converge light, so that polychrome light fully mixes, weakens glare phenomenon.
[description of drawings]
Fig. 1 is the cut-open view of the LED light fixture of embodiment one;
Analog simulation test figure when Fig. 2 is a LED lamp distribution shown in Figure 1;
Fig. 3 is the spliced constitutional diagram of light guide plate of the LED light fixture of embodiment one;
Fig. 4 is spliced another constitutional diagram of light guide plate of the LED light fixture of embodiment one;
Fig. 5 is the cut-open view of the LED light fixture of embodiment two;
Fig. 6 is the cut-open view of the LED light fixture of embodiment three;
Fig. 7 is the stereographic map of the LED light fixture of embodiment four;
Fig. 8 is the stereographic map of the LED light fixture of embodiment five.
[embodiment]
Below main accompanying drawings the specific embodiment of the present invention.
See also Fig. 1, the LED light fixture 100 of embodiment one comprises light guide plate 110, first led light source 140 and second led light source 150.Light guide plate 110 comprises transparent base (figure is mark not), incidence surface 120 and exiting surface 130.
In the present embodiment, transparent base is roughly rectangle, and it can be formed by transparent resin material, for example, and a kind of or its combination in acryl resin, polycarbonate resin, polystyrene resin and the styrene-methyl methacrylate resin.
Incidence surface 120 is formed on the transparent base.Incidence surface 120 is roughly rectangle, and its both sides are formed with the stage portion 122 that is used to accommodate light source.Stage portion 122 comprises first step face 1221 and the second step face 1223 that links to each other with the first step face.First step face 1221 links to each other with incidence surface 120, and second step face 1223 parallels with first step face 1221 exiting surfaces 130.The middle part of incidence surface 120 also is provided with a plurality of scattering netted dots (figure does not show).A plurality of scattering netted dots space is provided with, and its distribution density is along with increasing with second led light source, 140 distances and reducing.Scribble light-scattering material on the scattering netted dot,, realize Beam Control, reach the purpose of even bright dipping second led light source 150 by distance between the network point and site radius size.In the present embodiment, scattering netted dot is the serigraphy site.
Be appreciated that stage portion 122 is not limited to be formed at the relative both sides of incidence surface 120, also can be formed at the drift angle place of incidence surface 120, only the edge that needs stage portion 122 to be formed at incidence surface 120 gets final product.
Exiting surface 130 is formed on the transparent base 110, and relative with incidence surface 120.Exiting surface 130 is formed with reverse frustoconic groove 132 and is positioned at the arc convex 134 of reverse frustoconic groove 132 bottoms.Reverse frustoconic groove 132 is a plurality of, and spaced set.Arc convex 134 can be semi-cylindrical hill or half elliptic projection.Specifically in the present embodiment, arc convex 134 is a semi-cylindrical hill.Arc convex 134 is used to converge light, forms a virtual light source.Reverse frustoconic groove 132 is used for light is spread, so that the even outgoing of light.
First led light source 140 is contained in this stage portion.First led light source 140 can be white LED light source, red-light LED light source etc.Specifically in the present embodiment, first led light source 140 is the red-light LED light source.
Second led light source 150 is arranged on the incidence surface 120.Second led light source 150 can be white LED light source, red-light LED light source, blue-ray LED light source etc.Specifically in the present embodiment, second led light source 150 is a white LED light source.Second led light source 150 is a plurality of, can be circular array or rectangular array is arranged.
The ruddiness of first led light source, 140 emissions is injected in the transparent base 110 from the first step face 1221 and the second step face 1223 of stage portion 122; The white light of second led light source, 150 emissions after the scattering netted dot on the process incidence surface 120 fully spreads, is injected in the transparent base 110 equably, fully mixes with ruddiness; 132 diffusions of rounded connected in star of mixed light, and converge at arc convex 134.
See also Fig. 2, the light distribution effect of above-mentioned LED light fixture 100 is carried out analog simulation test, adopt polar coordinate system among the figure, polar angle is represented lighting angle, and the utmost point is directly represented the light intensity value of light fixture 100 in different angles; The curve of different colours is represented the light distribution of the different section angles of light fixture respectively, and promptly 0 spends, 45 degree, 90 degree, 145 degree.Simulation result shows: the light intensity of designed light fixture 100 is symmetrical distribution in the space, and lighting angle can cover positive and negative 45 degree scopes, and distribution uniform; Its light source utilization factor reaches 94.991%, and the brightness maximal value is 633.93cd/klm, and the brightness minimum value is 7.1323e-13cd/klm, and total luminous flux is 22590lm.Hence one can see that, and the light source utilization factor of above-mentioned LED light fixture 100 is higher, and emitting brightness is comparatively even, and glare phenomenon disappears substantially.
The light guide plate 110 of above-mentioned LED light fixture 100 is provided with stage portion 122 at the edge of incidence surface 120, can light source be set simultaneously in the stage portion 122 of light guide plate 110 and the middle part of incidence surface 120, the incident mode that forms side-light type and straight-down negative and deposit, the utilization factor while emitting brightness that improves light source is more even.And, light guide plate 110 is formed with reverse frustoconic groove 132 and is positioned at the arc convex 134 of reverse frustoconic groove 132 bottoms at exiting surface 130, and reverse frustoconic groove 132 is used to spread light, and arc convex 134 is used to converge light, so that polychrome light fully mixes, weaken glare phenomenon.
And, can light sources of different colors be set simultaneously in the stage portion 122 of light guide plate 110 and the middle part of incidence surface, the incident mode that adopts side-light type and straight-down negative and deposit, its colour rendering is higher.
See also Fig. 3, light guide plate 110 also can be arc, because the edge of light guide plate 110 is provided with stage portion 122, it is spliced into the light guide plate of annular, with illumination and the decoration needs that satisfy different occasions.
See also Fig. 4, light guide plate 110 also can be six distortion, because the edge of light guide plate 110 is provided with stage portion 122, it is spliced into large-sized light guide plate, reduces the manufacturing cost of large-sized light guide plate.
See also Fig. 5, the LED light fixture 200 of embodiment two is similar to the LED light fixture 100 of embodiment one, and its difference is: first step face 2221 is arc, and it is bent to second step face 2223 from incidence surface 220; First led light source 240 is oppositely arranged with first step face 2221, to improve the utilization factor of first led light source 240.
See also Fig. 6, the LED light fixture 300 of embodiment three is similar to the LED light fixture 100 of embodiment one, and its difference is: stage portion 322 only is formed at a side of incidence surface 322, and first step face 3221 is a serrate; First led light source 340 is oppositely arranged with first step face 3221, with the light of abundant diffusion first led light source 340 emissions.
See also Fig. 7, the LED light fixture 400 of embodiment four is similar to the LED light fixture 100 of embodiment one, and its difference is: stage portion 422 is located at 420 drift angle place.
See also Fig. 8, the LED light fixture 500 of embodiment five is similar to the LED light fixture 100 of embodiment one, and its difference is: stage portion 522 is located at the drift angle place of incidence surface 520; First step face 5221 is an arc, and perpendicular with second step face 5223; Incidence surface 520 is provided with the fixed leg 560 of a plurality of LED of being used for fixing light fixtures 500.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a light guide plate is characterized in that, comprising:
Transparent base;
Incidence surface is formed on this transparent base, and the edge of this incidence surface is formed with the stage portion that is used to accommodate light source; And exiting surface, being formed on this transparent base and relative with this incidence surface, this exiting surface is formed with the reverse frustoconic groove and is positioned at the arc convex of this reverse frustoconic bottom portion of groove.
2. light guide plate as claimed in claim 1 is characterized in that, the middle part of this incidence surface is provided with a plurality of scattering netted dots that the space is provided with.
3. light guide plate as claimed in claim 1 is characterized in that, this arc convex is semi-cylindrical hill or half elliptic projection.
4. as claimed in claim 1, it is characterized in that this incidence surface is a rectangle, this stage portion be formed in the relative both sides of this incidence surface and the drift angle place one of at least.
5. as each described light guide plate in the claim 1 to 4, it is characterized in that, this stage portion comprises first step face that links to each other with this incidence surface and the second step face that links to each other and parallel with this exiting surface with this first step face, and this first step face is arc or serrate.
6. a LED light fixture is characterized in that, comprising:
Light guide plate comprises:
Transparent base;
Incidence surface is formed on this transparent base, and the edge of this incidence surface is formed with the stage portion that is used to accommodate light source;
Exiting surface is formed on this transparent base and relative with this incidence surface, and this exiting surface is formed with the reverse frustoconic groove and is positioned at the arc convex of this reverse frustoconic bottom portion of groove;
First led light source, it is contained in this stage portion; And
Second led light source, it is arranged on this incidence surface.
7. LED light fixture as claimed in claim 1 is characterized in that, this second led light source is a plurality of, and is circular array or rectangular array is arranged.
8. LED light fixture as claimed in claim 1 is characterized in that, this first led light source is the red-light LED light source, and this second led light source is a white LED light source.
9. LED light fixture as claimed in claim 1 is characterized in that, this incidence surface is provided with a plurality of fixed legs that are used for fixing this LED light fixture.
10. LED light fixture as claimed in claim 1 is characterized in that, this incidence surface is provided with a plurality of scattering netted dots that the space is provided with, and the distribution density of these a plurality of scattering netted dots is along with reducing apart from increase with this second led light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101141770A CN102141647B (en) | 2011-05-04 | 2011-05-04 | Light guide plate and light-emitting diode (LED) lamp containing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101141770A CN102141647B (en) | 2011-05-04 | 2011-05-04 | Light guide plate and light-emitting diode (LED) lamp containing same |
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| Publication Number | Publication Date |
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| CN102141647A true CN102141647A (en) | 2011-08-03 |
| CN102141647B CN102141647B (en) | 2013-04-17 |
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| CN2011101141770A Active CN102141647B (en) | 2011-05-04 | 2011-05-04 | Light guide plate and light-emitting diode (LED) lamp containing same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540319A (en) * | 2012-01-04 | 2012-07-04 | 中国科学院深圳先进技术研究院 | Light guide plate and LED (Light-emitting Diode) lamp |
| CN103048727A (en) * | 2012-12-11 | 2013-04-17 | 京东方科技集团股份有限公司 | LGP (Light Guide Plate), backlight source and LCD (Liquid Crystal Display) device |
| CN103486453A (en) * | 2012-06-13 | 2014-01-01 | 康源医疗设备股份有限公司 | Operating lamp |
| WO2014201806A1 (en) * | 2013-06-21 | 2014-12-24 | 京东方科技集团股份有限公司 | Light guide panel and backlight module using the light guide panel, and display device |
| CN105953092A (en) * | 2016-06-24 | 2016-09-21 | 深圳宝耀科技有限公司 | Low-glare LED panel lamp capable of uniformly emitting light |
| CN108895960A (en) * | 2018-05-17 | 2018-11-27 | 安徽国晖电气科技有限公司 | A kind of aobvious calibration gauge of light |
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| US20070081321A1 (en) * | 2005-10-10 | 2007-04-12 | Seung-Ho Ahn | Backlight unit and display apparatus having the same |
| CN101339329A (en) * | 2008-08-11 | 2009-01-07 | 上海广电光电子有限公司 | Backlight module group |
| CN101398148A (en) * | 2007-09-28 | 2009-04-01 | 富士迈半导体精密工业（上海）有限公司 | Area source device for LED |
| CN201652173U (en) * | 2010-04-09 | 2010-11-24 | 包永浩 | High-power LED secondary optical lens with adjustable beam angle |
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2011
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Patent Citations (5)
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| WO2005022216A2 (en) * | 2003-08-28 | 2005-03-10 | Schefenacker Vision Systems Germany Gmbh & Co. Kg | Illuminating device comprising a light source and a transparent light guiding body arranged upstream therefrom |
| US20070081321A1 (en) * | 2005-10-10 | 2007-04-12 | Seung-Ho Ahn | Backlight unit and display apparatus having the same |
| CN101398148A (en) * | 2007-09-28 | 2009-04-01 | 富士迈半导体精密工业（上海）有限公司 | Area source device for LED |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540319A (en) * | 2012-01-04 | 2012-07-04 | 中国科学院深圳先进技术研究院 | Light guide plate and LED (Light-emitting Diode) lamp |
| CN103486453A (en) * | 2012-06-13 | 2014-01-01 | 康源医疗设备股份有限公司 | Operating lamp |
| CN103048727A (en) * | 2012-12-11 | 2013-04-17 | 京东方科技集团股份有限公司 | LGP (Light Guide Plate), backlight source and LCD (Liquid Crystal Display) device |
| CN103048727B (en) * | 2012-12-11 | 2014-12-24 | 京东方科技集团股份有限公司 | LGP (Light Guide Plate), backlight source and LCD (Liquid Crystal Display) device |
| WO2014201806A1 (en) * | 2013-06-21 | 2014-12-24 | 京东方科技集团股份有限公司 | Light guide panel and backlight module using the light guide panel, and display device |
| CN105953092A (en) * | 2016-06-24 | 2016-09-21 | 深圳宝耀科技有限公司 | Low-glare LED panel lamp capable of uniformly emitting light |
| CN108895960A (en) * | 2018-05-17 | 2018-11-27 | 安徽国晖电气科技有限公司 | A kind of aobvious calibration gauge of light |
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| Publication number | Publication date |
|---|---|
| CN102141647B (en) | 2013-04-17 |
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Effective date of registration: 20201026 Address after: No.6-10, 5th floor, building 1, No.1, Tidu street, Qingyang District, Chengdu, Sichuan 610000 Patentee after: Beijing fish claw Network Technology Co.,Ltd. Chengdu branch Address before: 1068 No. 518055 Guangdong city in Shenzhen Province, Nanshan District City Xili University School Avenue Patentee before: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES Effective date of registration: 20201026 Address after: 226000 169 Li Fa FA Road, Chengdong Town, Haian City, Nantong, Jiangsu. Patentee after: NANTONG WOTE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 610000 no.6-10, 5th floor, building 1, Tidu street, Qingyang District, Chengdu City, Sichuan Province 610000 Patentee before: Beijing fish claw Network Technology Co.,Ltd. Chengdu branch |
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Effective date of registration: 20201030 Address after: Group 39, tianhuanggong village, WuJie Town, Tongzhou District, Nantong City, Jiangsu Province, 226000 Patentee after: Hanmoni (Jiangsu) Photoelectric Technology Co.,Ltd. Address before: 226000 169 Li Fa FA Road, Chengdong Town, Haian City, Nantong, Jiangsu. Patentee before: NANTONG WOTE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |