CN103104843B - Lighting device - Google Patents
Lighting device Download PDFInfo
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- CN103104843B CN103104843B CN201310030976.9A CN201310030976A CN103104843B CN 103104843 B CN103104843 B CN 103104843B CN 201310030976 A CN201310030976 A CN 201310030976A CN 103104843 B CN103104843 B CN 103104843B
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Abstract
The invention discloses a lighting device which comprises an installation portion (10) provided with an installation space, a light source module (20) arranged in the installation space and provided with a light emitting end, and a light emitting module (30) arranged in the installation space and provided with an incident plane and a light emitting plane. The light emitting end is arranged by facing towards the incident plane. The light emitting module (30) comprises a nanocrystal fluorescent layer (34) which is arranged between the incident plane of the light emitting module (30)and the light source module (20) of the light emitting module (30). The lighting device is capable of improving light emitting efficiency of light-emitting diode (LED) particles and light emitting of the LED particles can be uniform.
Description
Technical field
The present invention relates to lighting technical field, in particular to a kind of lighting device.
Background technology
At present, widely used in LED panel lamp is the structure of a kind of side luminescence, namely LED particle is placed in the side of light guide plate, light squeezes into light guide plate from the side, utilize light guide plate tentatively to be beaten by light, then from the front bright dipping of light guide plate, then diffuser plate is set in the front of light guide plate and carries out the even light of secondary, this structure effectively can eliminate the serious dazzle that LED particle is brought, and makes it the light-emitting area that formation one is softer.
What send due to LED particle is blue light, so can be coated with Red phosphor layer in LED wafer in application, with the effect making the luminescence of LED particle form incandescent lamp.But the light efficiency of LED particle is limited to the launching efficiency of Red phosphor layer, requiring the field of specular removal, high color rendering index (CRI), its application is very limited; And Red phosphor layer is directly coated with and is located on the wafer of LED particle, during work, temperature is higher, and its performance and used life can be affected.
Summary of the invention
The present invention aims to provide a kind of lighting device, can improve the light extraction efficiency of LED particle and make its bright dipping more even.
To achieve these goals, according to an aspect of the present invention, provide a kind of lighting device, comprising: installation portion, there is installing space; Light source assembly, is arranged in installing space, and light source assembly has light issuing side; And go out optical assembly, be arranged in installing space, go out optical assembly and have the plane of incidence and exiting surface, light issuing side is arranged towards the plane of incidence; Go out optical assembly and comprise nanocrystalline fluorescence coating, nanocrystalline fluorescence coating is going out between the plane of incidence of optical assembly and the light issuing side of light source assembly.
Further, go out optical assembly and also comprise: light guide, have the plane of incidence and exiting surface, the plane of incidence and nanocrystalline fluorescence coating fit; And reflecting component, be positioned at the side of the exiting surface dorsad of light guide and nanocrystalline fluorescence coating, spread out of from this side to prevent the light entering nanocrystalline fluorescence coating and light guide.
Further, go out optical assembly and also comprise diffuser, diffuser is positioned at the side at the exiting surface place of light guide, to adjust the uniformity of the light spread out of from exiting surface.
Further, installation portion comprises: backboard, is positioned at the side of optical assembly exiting surface dorsad; And installing rack, be removably connected with backboard, between installing rack and backboard, form installing space.
Further, installing rack has mounting groove towards the side of installing space, goes out optical assembly and is arranged in installing space, and the plane of incidence going out optical assembly is embedded in mounting groove, and light source assembly is embedded in mounting groove, and between the plane of incidence and the sidewall of mounting groove.
Further, installing rack comprises multiple frame, joins end to end between multiple frame, and removably connected by connector between two adjacent frames, each frame has mounting groove respectively.
Further, installation portion also comprises heat-conducting piece, and heat-conducting piece is pressed between light source assembly and the sidewall of mounting groove.
Further, installation portion also comprises lifting part, and the side of lifting part and backboard installing space dorsad is removably connected.
Further, light source assembly comprises: wiring board, is arranged in the installing space of installation portion; And LED particle, be fixed on wiring board, LED particle has light issuing side.
Further, the coated wafer of LED particle is provided with yellow fluorescence bisque.
Apply technical scheme of the present invention, nanocrystalline fluorescence coating is increased between the light issuing side and the plane of incidence going out optical assembly of light source assembly, substitute original painting with nanocrystalline fluorescence coating and be located at Red phosphor layer on LED particle wafer, the launching efficiency of nanocrystalline fluorescence coating, apparently higher than red fluorescence powder, can make the light efficiency etc. of light source assembly significantly improve; Meanwhile, the light through nanocrystalline fluorescence coating is more even, makes the light entering out optical assembly can reach better light mixing effect; In addition, nanocrystalline fluorescence coating is separated with LED particle, and the impact of the high temperature that can not produce by LED wafer during work, its performance is more stable, and service life also increases relatively.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the decomposing schematic representation of lighting device according to an embodiment of the invention;
Fig. 2 shows the A place enlarged diagram of the lighting device according to Fig. 1;
Fig. 3 shows the B place enlarged diagram of the lighting device according to Fig. 1; And
Fig. 4 shows the partial schematic diagram of lighting device according to an embodiment of the invention.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figures 1 to 4, according to embodiments of the invention, provide a kind of lighting device, comprise installation portion 10, light source assembly 20 and go out optical assembly 30.Wherein installation portion 10 has installing space, for holding and fixed light source assembly 20 and go out optical assembly 30; Light source assembly 20 is arranged in installing space, and as the original illuminating part of lighting device to provide light source, correspondingly, light source assembly 20 has light issuing side; Going out optical assembly 30 is arranged in installing space, light for sending the light issuing side of light source assembly 20 processes, to improve light efficiency, and make it more even, prevent dazzle, correspondingly, go out optical assembly 30 and have the plane of incidence and exiting surface, the plane of incidence is arranged towards light issuing side, to receive the light that light issuing side sends, this light, after going out optical assembly 30 and processing, spreads out of from exiting surface.In order to make light extraction efficiency, the uniformity, go out light quality and have further lifting, go out between the plane of incidence of optical assembly 30 and the light issuing side of light source assembly 20 and be provided with nanocrystalline fluorescence coating 34, introduce the nanocrystalline fluorescent material of high launching efficiency, the energy can be saved further meeting under same lighting requirement.
Nanocrystalline fluorescence coating 34 comprises nanocrystalline fluorescent glue, nanocrystalline fluorescent glue is mixed by quantum dot and optical glue, different quantum dots, by the monochromatic light that can send different-waveband after blue-light excited, by the mixing of the quantum dot of several wave band, can obtain the light of the colour temperature wanted; Compared to traditional fluorescent material, there is self-absorption low, launching efficiency high.
Installation portion 10 comprises backboard 11 and installing rack, and wherein installing rack forms degree of lip-rounding structure, is removably connected, makes to form aforesaid installing space between installing rack and backboard 11 with backboard 11 by multiple first securing member 13.Conveniently install, the first securing member 13 is self-tapping screw.Join end to end between connector 15, four frames 14 that installing rack comprises four frames 14 and four L shapes, be connected between two often adjacent frames 14 by connector 15, connector 15 is fixed by multiple second securing member 16 with frame 14.Conveniently install, the second securing member 16 is screw.
Certainly, installing rack is not limited to degree of lip-rounding structure here, and its concrete shape should be arranged according to actual needs, such as circular or polygon, as long as there is the space being enough to hold light source assembly 20 and go out optical assembly 30.Installation portion 10 is also not limited to be made up of backboard 11 and installing rack, such as, and can by one-body molded to backboard 11 and installing rack.
Light source assembly 20 and go out optical assembly 30 and be all arranged in installing space, in order to not affect the light-out effect of exiting surface, backboard 11 is positioned at the side relative with exiting surface of optical assembly 30.
The conveniently installation of installation portion 10 entirety, installation portion 10 also comprises lifting part 12, and lifting part 12 is removably mounted on the side of backboard 11 installing space dorsad.
Light source assembly 20, as illuminating part, is preferably LED illumination assembly, comprises wiring board 21 and LED particle 22, wherein wiring board 21 is strip structure, multiple LED particle 22 is arranged on wiring board 21 along the length direction of wiring board 21, and LED particle has aforesaid smooth issuing side, can spread out of light.
Wiring board 21 can be aluminium base, also can select other base materials as required.
In order to install wiring board 21, each frame 14 has mounting groove towards the side of installing space, and the shape of this mounting groove and the shape of wiring board 21 adapt, and can be embedded in mounting groove by wiring board 21, the light issuing side of LED particle are arranged towards installing space.
In order to fixing circuit board 21 and heat radiation, installation portion 10 also comprises heat-conducting piece 19, and heat-conducting piece 19 is pressed between wiring board 21 and the sidewall of mounting groove, can play the effect of fastening line plate 21, and the heat conduction that wiring board 21 can be produced is to frame 14, and then play good radiating effect.
In order to provide power supply, installation portion also comprises power supply module 17, this power supply module 17 comprises power supply 171 and electric wire 172, wherein power supply 171 is external power supply, electric wire 172 one end is electrically connected with power supply 171, the other end is electrically connected with wiring board 21 through after the through hole on backboard 11, can be parallel connection also can be series connection between wiring board 21, and concrete annexation should be arranged according to actual needs.
In order to protection power source assembly 17, electric wire 172 two ends are provided with water joint.Be provided with chip shield 18 in through hole on backboard 11, isolated by the edge of through hole to prevent electric wire 172.Preferably, chip shield 18 is silicone gasket.
Go out optical assembly 30 and comprise light guide 31, reflecting component 32, diffuser 33 and nanocrystalline fluorescence coating 34.Wherein light guide 31 is light guide plate, and light guide plate has the plane of incidence and exiting surface, and reflecting component 32 is reflector, and diffuser 33 is diffuser plate.Reflector is positioned at the side of the exiting surface dorsad of light guide plate, diffuser plate is then positioned at the side at the light guiding surface place of light guide plate, reflector, light guide plate and diffuser plate are stacked to be in turn placed in installing space, and reflector is near backboard 11, the plane of incidence of light guide plate is embedded in mounting groove, be oppositely arranged with the light issuing side of LED particle 22, nanocrystalline fluorescence coating 34 is between LED particle 22 and the plane of incidence, and fit with the plane of incidence, the light that light issuing side is sent enters light guide plate through nanocrystalline fluorescence coating 34.
Light guide plate is the acryl or the PC sheet material that utilize optical grade, then with there is high reflectivity and the hitech materials of not extinction, light guiding points is stamped in the acryl of optical grade or PC sheet material bottom surface UV screen printing technology, optical grade acryl or PC sheet material is utilized to draw the light sent from light source, make it in the stop of optical grade acryl or PC plate surface, when light is mapped to each light guiding points, reverberation can toward all angles diffusion, then destroy conditioned reflex, thus penetrated by the exiting surface of light guide plate; By various density, light guiding points not of uniform size, light guide plate uniformly light-emitting can be made.
The purposes of reflector is that the light by the side from light guide plate and nanocrystalline fluorescence coating 34 exiting surface is dorsad exposed is reflected back in light guide plate, to improve the service efficiency of light.
The plate forming that diffuser plate is through means of different processes, the diffusion particle adding the interference of light again makes light by producing different refractive indexes during base material, thus realize the repeatedly refraction of light, the dispersion of uniform light, reflection, scattering, the direction that adjustment light is propagated, make spot light become area source, because the light of loss part is so the light spread out of through diffuser plate is softer, there is no dazzle.
Certainly, light guide 31 here, reflecting component 32 and diffuser 33 are not limited to slab structure, and its concrete shape should adjust according to actual installation occasion.
Nanocrystalline fluorescence coating 34 of the present invention is excited by blue light or cold white light, can obtain better light-out effect.What self send due to LED particle 22 is blue light, so directly can penetrate nanocrystalline fluorescence coating 34 with the illumination that LED particle 22 sends, also can be coated with yellow fluorescent powder layer at the wafer of LED particle 22, make it send cold white light to irradiate nanocrystalline fluorescence coating 34.The light that LED particle 22 sends, the brilliant fluorescence coating 34 of excitation nano, nanocrystalline fluorescence coating 34 uniformly light-emitting, light enters light guide plate, by the light mixing effect of light guide plate, can effectively light be derived from exiting surface, again through the even light of diffuser plate, make the uniform light be up to soft, free from glare.
The invention has the advantages that:
The light that 1.LED particle 22 sends is to the launching efficiency comparison fluorescent material high 20% to 30% of nanocrystalline fluorescence coating 34, and light transmittance efficiency improves more than 20%;
2. than the light that sends of LED particle 22 directly enter light guide plate, through nanocrystalline fluorescence coating 34 light meeting evenly incident light guide plate, light guide plate can reach better light mixing effect, and then can select for the diffuser plate of even light the material that mist degree is lower, transmitance is higher, thus promote the light extraction efficiency of lighting device entirety;
3. the light display colour index that nanocrystalline fluorescence coating 34 ejects can reach more than 85, and high to 95, can fully can meet the requirement of high light quality field devices;
4. nanocrystalline fluorescence coating 34 is away from the wafer of LED particle 22, and operationally temperature is not high, and close to room temperature, its performance is more stable, and considerably increases service life.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: between the light issuing side and the plane of incidence going out optical assembly of light source assembly, increase nanocrystalline fluorescence coating, substitute original painting with nanocrystalline fluorescence coating and be located at Red phosphor layer on LED particle wafer, the launching efficiency of nanocrystalline fluorescence coating, apparently higher than red fluorescence powder, can make the light efficiency etc. of light source assembly significantly improve; Meanwhile, the light through nanocrystalline fluorescence coating is more even, makes the light entering out optical assembly can reach better light mixing effect; In addition, nanocrystalline fluorescence coating is separated with LED particle, and the impact of the high temperature that can not produce by LED wafer during work, its performance is more stable, and service life also increases relatively.
The foregoing is only 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 modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a lighting device, comprising:
Installation portion (10), has installing space;
Light source assembly (20), is arranged in described installing space, and described light source assembly (20) has light issuing side; And
Go out optical assembly (30), be arranged in described installing space, described in go out optical assembly (30) there is the plane of incidence and exiting surface, described smooth issuing side is arranged towards the described plane of incidence;
It is characterized in that, described go out optical assembly (30) comprise nanocrystalline fluorescence coating (34), go out described in described nanocrystalline fluorescence coating (34) is positioned between the described plane of incidence of optical assembly (30) and the described smooth issuing side of described light source assembly (20);
Described installation portion (10) comprising:
Backboard (11), goes out the side of optical assembly (30) described exiting surface dorsad described in being positioned at; And
Installing rack, is removably connected with described backboard (11), forms described installing space between described installing rack and described backboard (11);
Described installing rack has mounting groove towards the side of described installing space, described go out optical assembly (30) be arranged in described installing space, described go out the described plane of incidence of optical assembly (30) be embedded in described mounting groove, described light source assembly (20) is embedded in described mounting groove, and between the described plane of incidence and the sidewall of described mounting groove.
2. lighting device according to claim 1, is characterized in that, described in go out optical assembly (30) and also comprise:
Light guide (31), has the described plane of incidence and described exiting surface, and the described plane of incidence and described nanocrystalline fluorescence coating (34) fit; And
Reflecting component (32), be positioned at the side of the described dorsad exiting surface of described light guide (31) and described nanocrystalline fluorescence coating (34), spread out of from this side to prevent the light entering described nanocrystalline fluorescence coating (34) and described light guide (31).
3. lighting device according to claim 2, it is characterized in that, described go out optical assembly (30) also comprise diffuser (33), described diffuser (33) is positioned at the side at the described exiting surface place of described light guide (31), to adjust the uniformity of the light spread out of from described exiting surface.
4. lighting device according to claim 1, it is characterized in that, described installing rack comprises multiple frame (14), join end to end between multiple described frame (14), removably connected by connector (15) between two adjacent described frames (14), each described frame (14) has described mounting groove respectively.
5. lighting device according to claim 1, it is characterized in that, described installation portion (10) also comprises heat-conducting piece (19), and described heat-conducting piece (19) is pressed between described light source assembly (20) and the sidewall of described mounting groove.
6. lighting device according to claim 1, it is characterized in that, described installation portion (10) also comprises lifting part (12), and the side of described lifting part (12) and described backboard (11) described installing space dorsad is removably connected.
7. lighting device according to any one of claim 1 to 3, is characterized in that, described light source assembly (20) comprising: wiring board (21), is arranged in the described installing space of described installation portion (10); And
LED particle (22), be fixed on described wiring board (21), described LED particle (22) has described smooth issuing side.
8. lighting device according to claim 7, is characterized in that, the coated wafer of described LED particle (22) is provided with yellow fluorescence bisque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030976.9A CN103104843B (en) | 2013-01-24 | 2013-01-24 | Lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310030976.9A CN103104843B (en) | 2013-01-24 | 2013-01-24 | Lighting device |
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| Publication Number | Publication Date |
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| CN103104843A CN103104843A (en) | 2013-05-15 |
| CN103104843B true CN103104843B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310030976.9A Active CN103104843B (en) | 2013-01-24 | 2013-01-24 | Lighting device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604076A (en) * | 2013-12-06 | 2014-02-26 | 昆山市诚泰电气股份有限公司 | Easily mounted and dismounted LED (Light-emitting Diode) flat light |
| CN106287245A (en) * | 2016-08-16 | 2017-01-04 | 江苏绿扬光伏科技有限公司 | There is the illuminator of thermal diffusivity |
| CN107238028A (en) * | 2017-06-21 | 2017-10-10 | 漳州立达信灯具有限公司 | A kind of rotatable and beat cylinder lamp structure |
| CN209146837U (en) * | 2018-11-09 | 2019-07-23 | 东莞全创光电实业有限公司 | A kind of LED cabinet lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634501Y (en) * | 2003-06-27 | 2004-08-18 | 姚志图 | Color changing and film changing type sub white LED back light source |
| CN102606963A (en) * | 2012-04-09 | 2012-07-25 | 创维液晶器件(深圳)有限公司 | Direct type LED liquid crystal backlight module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8231258B2 (en) * | 2010-04-10 | 2012-07-31 | Lg Innotek Co., Ltd. | Lighting module and lighting apparatus including the same |
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2013
- 2013-01-24 CN CN201310030976.9A patent/CN103104843B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634501Y (en) * | 2003-06-27 | 2004-08-18 | 姚志图 | Color changing and film changing type sub white LED back light source |
| CN102606963A (en) * | 2012-04-09 | 2012-07-25 | 创维液晶器件(深圳)有限公司 | Direct type LED liquid crystal backlight module |
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| CN103104843A (en) | 2013-05-15 |
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Effective date of registration: 20230529 Address after: 310052 3rd floor, building 3, No. 428, Qiuyi Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: NAJING TECHNOLOGY Corp.,Ltd. Address before: 4th Floor, Building 1, No. 1576 Chunbo Road, Binjiang District, Hangzhou City, Zhejiang Province, 310052 Patentee before: HANGZHOU NANOCRYSTAL LIGHTING TECHNOLOGY Co.,Ltd. |
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