CN102777777A - Illuminating device and illuminating system with same - Google Patents
Illuminating device and illuminating system with same Download PDFInfo
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- CN102777777A CN102777777A CN2011101231673A CN201110123167A CN102777777A CN 102777777 A CN102777777 A CN 102777777A CN 2011101231673 A CN2011101231673 A CN 2011101231673A CN 201110123167 A CN201110123167 A CN 201110123167A CN 102777777 A CN102777777 A CN 102777777A
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- reflector
- light
- lighting device
- reflecting surface
- light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0025—Combination of two or more reflectors for a single light source
- F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
- F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
- F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/043—Optical design with cylindrical surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/048—Optical design with facets structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to an illuminating device provided with at least one shell (1), a reflection structure and a plurality of light sources (2), wherein the shell (1) is provided with a top cover (3), side walls (4) and a light outlet (5) opposite to the top cover (3); the reflection structure comprises two first reflectors (6) respectively arranged on two opposite side walls (4) and a second reflector (8), each reflector (6) is provided with a plurality of first reflection bodies (7), a light source (2) is arranged in each first reflection body (7), the second reflector (8) is arranged on the top cover (3), the first reflectors (6) reflect light rays from the light source (2) to the second reflector (8), and the second reflector (8) reflects the light rays towards the light outlet (5). In addition, the invention also relates to an illuminating system with a plurality of illuminating devices.
Description
Technical field
The present invention relates to a kind of lighting device and a kind of illuminator with a plurality of these lighting devices.
Background technology
LED is widely used in the linear modulation that is used for the office lighting device.Yet, because LED's itself is small-sized, needing in the linear modulation of the above-mentioned type to use a plurality of LED, this can cause the generation of dazzle.In order to address this problem, exist multiple solution in the prior art.A solution is, in the bright dipping side of led chip a diffusion cover plate is set, and this diffusion cover plate can be eliminated dazzle effectively, yet it has reduced the illumination efficiency of lighting device.In addition, also disclose illuminator in the prior art, the housing of this illuminator has light-emitting window; A plurality of led chips are arranged the both sides of light-emitting window relative to one another; Wherein, be arranged in both sides led chip light direction against each other, between the led chip of both sides, be furnished with LGP.A side relative with light-emitting window at LGP is provided with reflector, and is provided with diffusion sheet at LGP in the face of a side of light-emitting window, and simultaneously, this diffusion sheet covers light-emitting window.In this design, LGP can make the light from led chip have good light diffusive.Yet because the application of diffusion sheet, these solutions have the problem of lower illumination efficiency again inevitably, and this has reduced the illumination performance of illuminator equally to a great extent.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of lighting device and a kind of illuminator with a plurality of these lighting devices.
First purpose of the present invention realizes through a kind of lighting device thus; Promptly this lighting device has at least one housing, catoptric arrangement and a plurality of light source, and wherein, housing has top cover, sidewall and the light-emitting window relative with top cover; Wherein, Catoptric arrangement comprises: two first reflectors that are separately positioned on two relative sidewalls, and each first reflector has: a plurality of first reflectors are provided with a light source in each first reflector; With second reflector, be arranged on the top cover, first reflector will reflex to second reflector from the light of light source, and second reflector is with the direction reflection of this light towards light-emitting window.When the user directly observes according to lighting device of the present invention, on lighting device, can not observe bright spot, not that is to say to produce dazzle.Lighting device produces illumination uniformly.Simultaneously, because lighting device according to the present invention only directly reflects away light through catoptric arrangement, light does not produce loss, therefore also has very high illumination efficiency.
Propose according to preferential design of the present invention, first reflector comprises: the installed surface that is used to settle light source; Be arranged on first reflecting surface and second reflecting surface that is arranged on the opposite side of said light source of a side of light source, wherein the light of part at least that is respectively applied for the place side of first and second reflectings surface reflexes to said second reflector.In lighting device according to the present invention; Be arranged on the sidewall that is arranged in housing of the light source linearity in first reflector; And the light of light source outgoing points to towards the light source of opposite side; And reflex to second reflector through first and second reflectings surface of first reflector, thus avoided most light directly to shine out from light-emitting window, thus the generation of bright spot avoided effectively.
Preferably, first reflecting surface and second reflecting surface are with respect to said light source asymmetric arrangement, thereby the light of light source is as far as possible towards second reflector reflects.
Design according to the present invention preferably proposes, and second reflecting surface comprises first reflecting part and second reflecting part, and wherein, first reflecting part and second reflecting part are predetermined angle each other and arrange.In addition, first reflector also has auxiliary reflecting part, is used to obtain uniform distribution of light.Should assist the reflecting part since first reflecting part and joint, second reflecting part, extend towards the direction of light source.The light of light emitted possibly can pass through auxiliary reflecting part through the light that repeatedly reflects and finally reflex to second reflector, thereby reduce light loss effectively through repeatedly reflection in catoptric arrangement inside, has further heightened the illumination efficiency of lighting device.
Preferably, auxiliary reflecting part is designed to extend towards the direction of light source, and the ramped shaped reflector that raises gradually; Wherein, The ramped shaped reflector has the shape of V-arrangement, and light source is pointed at the tip of its V-arrangement, and two lateral layout of the ramped shaped reflector of V-arrangement become the cambered surface of indent.This further helps the light of light source is reflexed to second reflector.
According to a preferred design of the present invention, first reflector also has the 3rd reflecting surface, is used to block light, and wherein, the 3rd reflecting surface is extending on the direction at the optical axis of light source on the installed surface.The 3rd reflecting surface is arranged between second reflecting part and first reflecting surface; And intersect the 3rd reflecting surface and first reflecting surface and second reflecting part; Thereby blocked the light of on this direction, launching effectively; And this light that blocks reflexes to second reflector, and this has further reduced light loss, has improved illumination efficiency.
Preferably, first reflecting surface, second reflecting surface and the 3rd reflecting surface are designed to cambered surface respectively.Certainly, above-mentioned reflecting surface also can be designed to the reflecting surface of other type, the for example reflecting surface on plane.
Design according to the present invention preferably proposes; Light source in first reflector of a side is arranged on the perpendicular bisector of two adjacent light sources of first reflector of relative opposite side; Thereby make the light correlation not of the light source of both sides; Make the direct projection light of light emitted also can pass through first reflector reflects to the second reflector of opposite side, thereby reduced light loss significantly, improved illumination efficiency.
According to the present invention preferably, second reflector has the micro-structural that is made up of a plurality of second reflectors, and the good light that is used to make the light of output to obtain expection distributes
Preferably, second reflector is arranged in arch crooked on away from the direction of light-emitting window jointly, and second reflector has cylindricality reflecting surface, spherical reflecting surface, triangle reflecting surface or pyramid reflecting surface.Can obtain even light distribution more through this second reflector that constitutes by a plurality of second reflectors, obtain better illuminating effect.
According to the present invention preferably, second reflector design becomes mirror type reflector or diffuse reflector, thereby the illuminating effect of expection is provided as required.
Another object of the present invention realizes through a kind of illuminator with lighting device of a plurality of aforementioned type.This illuminator can comprise a plurality of lighting devices as required, thereby obtains the illuminating effect of expection, and it has avoided the generation of dazzle effectively, and has quite high illumination efficiency.
Description of drawings
Accompanying drawing constitutes the part of this specification, is used to help further understand the present invention.These accompanying drawing diagrams embodiments of the invention, and be used for explaining principle of the present invention with specification.Shown in the figure:
Fig. 1 is the perspective view according to lighting device of the present invention;
Fig. 2 is the index path according to lighting device of the present invention;
Fig. 3 is the perspective view according to first reflector of first reflector in the lighting device of the present invention;
Fig. 4 is the perspective view according to another angle of first reflector of Fig. 3
Fig. 5 is the surface of intensity distribution of process according to the light of first reflector reflects of lighting device of the present invention;
Fig. 6 is the layout drawing according to the light source of lighting device of the present invention;
Fig. 7 is the sketch map according to second reflector of lighting device of the present invention;
Fig. 8 is the distribution of light figure according to lighting device of the present invention;
Fig. 9 is the sketch map according to illuminator of the present invention.
The specific embodiment
Fig. 1 shows the perspective view according to lighting device of the present invention, and visible from figure, this lighting device has housing 1, catoptric arrangement and a plurality of light source 2; Wherein, Housing 1 has top cover 3, sidewall 4 and the light-emitting window 5 relative with top cover 3, and wherein, catoptric arrangement comprises: two first reflectors 6 that are separately positioned on two relative sidewalls 4; Each first reflector 6 has: a plurality of first reflectors 7; These first reflectors 7 are arranged on the sidewall 4 in line, and on relative sidewall, are provided with one group of first reflector 7 too, in each first reflector 7, are provided with a light source 2; With second reflector 8 (referring to Fig. 7), be arranged on the top cover 3, first reflector 6 will reflex to second reflector 8 from the light of light source 2, and second reflector 8 is with the direction reflection of light towards light-emitting window 5.
Index path according to lighting device of the present invention has been shown among Fig. 2.Visible from figure; From the first reflecting surface A reflection through first reflector 6 of a part of light of left side light source 2 to second reflector 8; And after through 8 reflections of second reflector, penetrate through light-emitting window 5; And to second reflector 8, and after through 8 reflections of second reflector, penetrate through light-emitting window 5 from the second reflecting surface B reflection through first reflector 6 of other a part of light of light source 2.The index path of the light of the light source 2 among the figure and not shown right side, but the index path of the light of the light source in its index path and left side is the mirror image symmetry.
Fig. 3 is the perspective view according to first reflector of first reflector in the lighting device of the present invention.Visible from figure, first reflector 7 comprises: the installed surface 9 that is used to settle light source 2; Be arranged on the first reflecting surface A and the second reflecting surface B that is arranged on the opposite side of light source 2 of a side of light source 2, the first and second reflecting surface A wherein, the light of part at least that B is respectively applied for the place side reflexes to second reflector 8.Also visible from figure, the first reflecting surface A and the second reflecting surface B be with respect to light source 2 asymmetric arrangement, thereby make the direction deflection of light towards second reflector 8.In addition, from figure, can also see that the second reflecting surface B comprises the first reflecting part B1 and the second reflecting part B2, and these two reflecting parts are predetermined angle layout each other.In addition, first reflector 7 also has auxiliary reflecting part C, is used to obtain uniform distribution of light, and auxiliary reflecting part C extends towards the direction of light source 2 since the first reflecting part B1 and B2 joint, second reflecting part.Should be designed to extend the ramped shaped reflector that also raises gradually by auxiliary reflecting part C towards the direction of light source 2; Wherein, This ramped shaped reflector has the shape of V-arrangement, and light source 2 is pointed at the tip of this V-arrangement, and two lateral layout of the ramped shaped reflector of V-arrangement become the cambered surface of indent.Should assist the concrete configuration of reflecting part C from Fig. 4, further to observe.
In addition, can also see from Fig. 3 and Fig. 4 that first reflector 7 also has the 3rd reflecting surface D; Be used to block light; Wherein, the 3rd reflecting surface D is extending on the direction at the optical axis of light source 2 on the installed surface 9, and the 3rd reflecting surface D intersects with the first reflecting surface A and the said second reflecting part B2.Visible from Fig. 4, the 3rd reflecting surface D is predetermined angle setting with respect to installed surface 9, and this predetermined angle is preferably between 30 degree to 90 degree.
In an embodiment according to the present invention, the first reflecting surface A, the second reflecting surface B and the 3rd reflecting surface D are designed to cambered surface respectively, can certainly be designed to the reflecting surface of other type, for example the reflecting surface on plane.
Fig. 5 shows the surface of intensity distribution of process according to the light of first reflector reflects of lighting device of the present invention; Visible from figure; Process is according to first reflector, 6 light reflected of the present invention, and distribution in the horizontal direction is well-proportioned, and in vertical direction the deflection of general 30 degree takes place; Just spend, thereby most light are all reflected to second reflector 8 towards second reflector, 8 deflections about 30.
Fig. 6 shows the layout drawing according to the light source of lighting device of the present invention.In design of the present invention, adopt LED to use as light source 2.Visible from figure; Light source 2 in first reflector 6 of a side is arranged on the perpendicular bisector of two adjacent light sources 2 of first reflector 6 of relative opposite side; Thereby make the light correlation not of the light source 2 of both sides; Make the direct projection light of light source 2 emissions also can reflex to second reflector 8, thereby reduced light loss significantly, improved illumination efficiency through first reflector 6 of opposite side.
Fig. 7 is the sketch map according to second reflector of lighting device of the present invention.The reflecting surface of second reflector 8 is designed to cylinder, thereby obtains equally distributed light output through second reflector 8.In the present embodiment; Second reflector 8 has the micro-structural that is made up of a plurality of second reflectors 10; These second reflectors 10 are arranged in arch crooked on away from the direction of light-emitting window 5 jointly; And second reflector 10 has the cylindricality reflecting surface, and this second reflector 10 also can have spherical reflecting surface, triangle reflecting surface or pyramid reflecting surface certainly.
Fig. 8 is the distribution of light figure according to lighting device of the present invention, and is visible from figure, and light is through all obtain uniform distribution of light after 8 reflections of second reflector in the horizontal and vertical directions.
Fig. 9 is the sketch map according to illuminator of the present invention.This illuminator is in series by a plurality of aforesaid lighting devices.The housing 1 of lighting device links together side by side, thereby obtains to provide the illuminator of expection illuminating effect.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Reference number
1 housing
2 light sources
3 top covers
4 sidewalls
5 light-emitting windows
6 first reflectors
7 first reflectors
8 second reflectors
9 installed surfaces
10 second reflectors
A first reflecting surface
B second reflecting surface
B1 first reflecting part
B2 second reflecting part
C assists the reflecting part
D the 3rd reflecting surface
Claims (16)
1. lighting device; Have at least one housing (1), catoptric arrangement and a plurality of light source (2), wherein, said housing (1) has top cover (3), sidewall (4) and the light-emitting window (5) relative with said top cover (3); It is characterized in that; Said catoptric arrangement comprises: two are separately positioned on two first reflectors (6) on the relative said sidewall (4), and each said first reflector (6) has: a plurality of first reflectors (7) are provided with a light source (2) in each first reflector (7); With second reflector (8), be arranged on the said top cover (3), said first reflector (6) will reflex to said second reflector (8) from the light of light source (2), and said second reflector (8) is with the direction reflection of said light towards said light-emitting window (5).
2. lighting device according to claim 1 is characterized in that, said first reflector (7) comprising: the installed surface (9) that is used to settle said light source (2); Be arranged on first reflecting surface (A) and second reflecting surface (B) that is arranged on the opposite side of said light source (2) of a side of said light source (2); (A, the light of part at least that B) is respectively applied for the place side reflexes to said second reflector (8) to wherein said first and second reflectings surface.
3. lighting device according to claim 2 is characterized in that, said first reflecting surface (A) and said second reflecting surface (B) are with respect to said light source (2) asymmetric arrangement.
4. lighting device according to claim 3; It is characterized in that; Said second reflecting surface (B) comprises first reflecting part (B1) and second reflecting part (B2), and wherein, said first reflecting part (B1) is predetermined angle each other with second reflecting part (B2) and arranges.
5. lighting device according to claim 4; It is characterized in that; Said first reflector (7) also has auxiliary reflecting part (C); Be used to obtain uniform distribution of light, said auxiliary reflecting part (C) begins from said first reflecting part (B1) and joint, said second reflecting part (B2), extends towards the direction of said light source (2).
6. lighting device according to claim 5; It is characterized in that; Said auxiliary reflecting part (C) is designed to extend the ramped shaped reflector that also raises gradually towards the direction of said light source (2); Wherein, said ramped shaped reflector has the shape of V-arrangement, and said light source (2) is pointed at the tip of said V-arrangement.
7. lighting device according to claim 6 is characterized in that, two lateral layout of the said ramped shaped reflector of V-arrangement become the cambered surface of indent.
8. according to the said lighting device of claim 2; It is characterized in that said first reflector (7) also has the 3rd reflecting surface (D), is used to block light; Wherein, said the 3rd reflecting surface (D) is gone up on the direction at the optical axis of said light source (2) at said installed surface (9) and is extended.
9. lighting device according to claim 8 is characterized in that, said the 3rd reflecting surface (D) intersects with said first reflecting surface (A) and said second reflecting part (B2).
10. according to each described lighting device in the claim 2 to 9, it is characterized in that said first reflecting surface (A), said second reflecting surface (B) and said the 3rd reflecting surface (D) are designed to cambered surface respectively.
11. according to each described lighting device in the claim 2 to 9; It is characterized in that the said light source (2) in said first reflector (6) of a side is arranged on the perpendicular bisector of two adjacent light sources (2) of said first reflector (6) of relative opposite side.
12., it is characterized in that said second reflector (8) has the micro-structural that is made up of a plurality of second reflectors (10) according to each described lighting device in the claim 2 to 9.
13. lighting device according to claim 12 is characterized in that, said second reflector (10) is arranged in arch crooked on away from the direction of said light-emitting window (5) jointly.
14. lighting device according to claim 12 is characterized in that, said second reflector (10) has cylindricality reflecting surface, spherical reflecting surface, triangle reflecting surface or pyramid reflecting surface.
15. lighting device according to claim 12 is characterized in that, said second reflector (8) is designed to mirror type reflector or diffuse reflector.
16. an illuminator is characterized in that, said illuminator is made up of according to each described lighting device in the aforementioned claim a plurality of.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123167.3A CN102777777B (en) | 2011-05-12 | 2011-05-12 | Lighting device and there is the illuminator of this lighting device |
| PCT/EP2012/056939 WO2012152536A1 (en) | 2011-05-12 | 2012-04-16 | A lighting apparatus and a lighting system having the lighting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110123167.3A CN102777777B (en) | 2011-05-12 | 2011-05-12 | Lighting device and there is the illuminator of this lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102777777A true CN102777777A (en) | 2012-11-14 |
| CN102777777B CN102777777B (en) | 2016-03-30 |
Family
ID=46025640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110123167.3A Active CN102777777B (en) | 2011-05-12 | 2011-05-12 | Lighting device and there is the illuminator of this lighting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102777777B (en) |
| WO (1) | WO2012152536A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899942A (en) * | 2012-12-29 | 2014-07-02 | 欧普照明股份有限公司 | Illuminating lamp |
| CN106439622A (en) * | 2016-10-28 | 2017-02-22 | 清华大学 | Illuminating device for gymnasium |
| CN106716010A (en) * | 2013-08-07 | 2017-05-24 | 佛罗里达知识产权有限公司 | Led lighting device |
| CN106764652A (en) * | 2016-11-16 | 2017-05-31 | 南京东晖光电有限公司 | A kind of dual reflective LED blackboard lightses of application classroom illumination |
| CN111076117A (en) * | 2019-12-25 | 2020-04-28 | 胡培佳 | Split type shadowless lighting system composed of light source group and large-area backdrop reflector |
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| EP2743570A1 (en) | 2012-12-14 | 2014-06-18 | Ansorg GmbH | Electric light |
| DE202013101792U1 (en) * | 2013-04-25 | 2014-07-29 | Zumtobel Lighting Gmbh | Luminaire with optical system for emitting light via an elongated light exit opening |
| DE202014103671U1 (en) * | 2014-08-07 | 2015-11-10 | Zumtobel Lighting Gmbh | Flat exhibition light |
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| CN101457899A (en) * | 2007-12-11 | 2009-06-17 | 精碟科技股份有限公司 | Led light structure without multi shadow |
| US20100284181A1 (en) * | 2009-05-05 | 2010-11-11 | O'brien Aaron | Light Fixture with Directed LED Light |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103899942A (en) * | 2012-12-29 | 2014-07-02 | 欧普照明股份有限公司 | Illuminating lamp |
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| CN106439622A (en) * | 2016-10-28 | 2017-02-22 | 清华大学 | Illuminating device for gymnasium |
| CN106764652A (en) * | 2016-11-16 | 2017-05-31 | 南京东晖光电有限公司 | A kind of dual reflective LED blackboard lightses of application classroom illumination |
| CN111076117A (en) * | 2019-12-25 | 2020-04-28 | 胡培佳 | Split type shadowless lighting system composed of light source group and large-area backdrop reflector |
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| Publication number | Publication date |
|---|---|
| CN102777777B (en) | 2016-03-30 |
| WO2012152536A1 (en) | 2012-11-15 |
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