CN103939797B - A kind of high-power LED street lamp of convection type heat radiation - Google Patents
A kind of high-power LED street lamp of convection type heat radiation Download PDFInfo
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- CN103939797B CN103939797B CN201410124570.1A CN201410124570A CN103939797B CN 103939797 B CN103939797 B CN 103939797B CN 201410124570 A CN201410124570 A CN 201410124570A CN 103939797 B CN103939797 B CN 103939797B
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Abstract
The present invention relates to technical field of LED illumination, refer in particular to the high-power LED street lamp of a kind of convection type heat radiation；It includes lamp adapter assembly, LED light source component and heat-radiating substrate, and one end of lamp adapter assembly is fixed together by fixture and heat-radiating substrate, and heat-radiating substrate includes the light source fixed part between being located therein and is positioned at the radiating part of its both sides；The heat-radiating substrate of the present invention is light fixture cavity is heat dissipation cavity again, and LED light source component is fixed on light source fixed part by fixture, adds the area of dissipation between LED light source component and heat-radiating substrate；Radiating part is provided with integrated multiple heat radiation strip shape bodies with it in array, between adjacent heat radiation strip shape body, forms louvre.The area of dissipation of heat radiation strip shape body is relatively big, and louvre too increases area of dissipation, even at environment relatively more severe, these are all conducive to quickly scattering and disappearing of heat, extend the service life of light fixture.
Description
Technical field
The present invention relates to technical field of LED illumination, refer in particular to the high-power LED street lamp of a kind of convection type heat radiation.
Background technology
LED is energy-efficient with it, safe and reliable, the superiority of long service life obtains the accreditation of society and is widely applied, and along with the appearance of high light large power LED, makes the application of LED expand to roadway illumination from lamp of giving instruction, instrumental panel.But current LED large power road lamp exists heat distributes the problem of difficulty, seriously reduces the service life of LED.
For solving this drawback, it is necessary to solve the heat dissipation problem of light fixture.The radiator of tradition LED street lamp is usually vertically installed in the top of LED light source, and is exposed to outside housing, the easy hydrops of this structure, is easily covered by dust, affects radiating effect.On the other hand, tradition LED street lamp housing, great majority adopt die casting aluminum hull, and LED light source is contained in the inside cavity of big volume, with oil lamp cover cover, and radiator is contained on housing, and this construction weight is big, and area of dissipation cannot ensure, it is easy to cause that heat radiation is bad.Therefore commonly used light fixture cavity air fluxion strap walks heat, improves heat radiation.Its heat abstractor adopted has air inlet and gas outlet, and by conduit with atmosphere or direct and atmosphere, at the air inlet arranged below of conduit, arranged above with gas outlet, heat dissipation cavity is formed by fin is airtight.Its weak point is owing to adopting one or two radiating tube to serve as heat dissipation cavity, the area of air and radiating tube heat exchange is big not, and the heat taken away during air flowing is few so that heat exchange inefficient, additionally heat-dissipating cavity is airtight form, and air is not easily formed free convection mode.
In actual applications, atrocious weather such as haze weather, extreme high heat weather, violent typhoon weather etc., when traditional LED street lamp is in the face of this environment, radiating effect is had a greatly reduced quality, LED can be accelerated light decay or dead lamp occur, relatively big by the LED street lamp windage of aluminium alloy heat radiator, there is safety problem.
Summary of the invention
The present invention is directed to problem of the prior art and the high-power LED street lamp of a kind of convection type heat radiation is provided, there is good heat dispersion, to extend the service life of street lamp
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of high-power LED street lamp of convection type heat radiation, including lamp adapter assembly, LED light source component and heat-radiating substrate, one end of described lamp adapter assembly is connected by fixture and heat-radiating substrate are fixing, described heat-radiating substrate includes the light source fixed part between being located therein and is positioned at the radiating part of its both sides, described LED light source component is fixedly installed on light source fixed part, described radiating part is that array is provided with integrated multiple heat radiation strip shape bodies with it, forms louvre between adjacent heat radiation strip shape body.
Further, described heat radiation strip shape body includes lower bending heat sink strip and upper arch heat sink strip, and described lower bending heat sink strip and upper arch heat sink strip are spaced distribution between two, and lower bending heat sink strip and upper arch heat sink strip are collectively forming heat dissipation channel.
Wherein, the radiating part of described light source fixed part and both sides forms Baltimore groove, and described Baltimore groove is provided with matched fixing plate, and described one end of fixing plate and one end of lamp adapter assembly removably connect, and the lower section of fixing plate is fixing with light source fixed part to be connected.
Wherein, the case being provided above being completely covered by the radiating part of both sides of described heat-radiating substrate, described case and heat-radiating substrate removably connect, and state case and louvre place is provided with multiple rows of air vent.
Wherein, described lamp adapter assembly includes upper cover body and lower cover, is connected by screw and forms a power supply cavity, and be fixedly installed driving power supply in described power source cavity body between upper cover body and lower cover；Described upper cover body is provided with electric wire chamber, and described electric wire intracavity is provided with the input power cord of a wire connector, civil power input power cord and LED light source component and connects with driving power supply each through wire connector.
Further, the top open part in described electric wire chamber is provided with waterproof flange collar and electric wire cover plate, and described electric wire cover plate and electric wire chamber are fastened and connected, and the lower surface of electric wire cover plate abuts with the upper surface of waterproof flange collar.
Further, the other end of described lamp adapter assembly is provided with rotating union joint, and described union joint includes sleeve and arc contiguous block, and the inwall of one end and arc contiguous block that described arc contiguous block is located at sleeve is provided with location teeth groove；In described power source cavity body, corresponding described arc contiguous block is provided with joint pin, is provided with in one end of joint pin and positions the location tooth bar that teeth groove cooperates；Being provided with spacing hole on described arc contiguous block, described arc contiguous block is connected with joint pin scalable through spacing hole by securing member.
Wherein, described LED light source component includes LED chip, for installing LED-baseplate and the diffuser of LED chip, and described diffuser is fixedly installed on the lower section of LED chip light-emitting area；Described heat-radiating substrate is provided with the fixing plate of light source corresponding to described LED-baseplate place coupling, and the fixing plate of described light source is fixing with LED-baseplate combination through heat-radiating substrate by fixture, and the upper surface of LED chip directly contacts with the lower surface of heat-radiating substrate.
Further, described LED-baseplate, light source are fixing is provided with the sealing ring for waterproof between plate and heat-radiating substrate, the fixing plate of described LED-baseplate, light source is separately provided for the sealed groove of accommodating sealing ring, after described LED-baseplate, the fixing plate of light source are fixed with heat-radiating substrate, described sealing ring is fixed and clamped in sealed groove.
Further, described sealing ring is evenly arranged with multiple positioning convex strip, and positioning convex strip and sealing ring one-body molded；The corresponding described positioning convex strip of described sealed groove is provided with multiple positioning through hole, and after described sealing ring is pressed in sealed groove, some length of described positioning convex strip passes positioning through hole.
Beneficial effects of the present invention:
The high-power LED street lamp of a kind of convection type provided by the present invention heat radiation, including lamp adapter assembly, LED light source component and heat-radiating substrate, one end of lamp adapter assembly is fixed together by fixture and heat-radiating substrate, and heat-radiating substrate includes the light source fixed part between being located therein and is positioned at the radiating part of its both sides；The heat-radiating substrate of the present invention is light fixture cavity is heat dissipation cavity again, and LED light source component is fixed on light source fixed part by fixture, adds the area of dissipation between LED light source component and heat-radiating substrate；Radiating part is provided with integrated multiple heat radiation strip shape bodies with it in array, between adjacent heat radiation strip shape body, forms louvre.The area of dissipation of heat radiation strip shape body is relatively big, and louvre too increases area of dissipation, even at environment relatively more severe, these are all conducive to quickly scattering and disappearing of heat, extend the service life of light fixture.
Accompanying drawing explanation
Fig. 1 is the structural representation one of the high-power LED street lamp of a kind of convection type heat radiation of the present invention；
Fig. 2 is the structural representation two of the high-power LED street lamp of a kind of convection type heat radiation of the present invention；
Fig. 3 is the structural representation three of the high-power LED street lamp of a kind of convection type heat radiation of the present invention；
Fig. 4 is the high-power LED street lamp of a kind of convection type heat radiation of the present invention structural representation when concealing case；
Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the high-power LED street lamp of a kind of convection type heat radiation of the present invention；
Fig. 6 is the structural representation that in the high-power LED street lamp that a kind of convection type of the present invention dispels the heat, LED light source component combines with heat-radiating substrate；
Fig. 7 is the front view that in the high-power LED street lamp that a kind of convection type of the present invention dispels the heat, LED light source component combines with heat-radiating substrate.
Accompanying drawing labelling in Fig. 1 to Fig. 7 includes:
1 lamp adapter assembly 11 upper cover body 12 lower cover 13 electric wire chamber
14 wire connector 15 waterproof flange collar 16 electric wire cover plate 2 LED light source component
21 LED chip 22 LED-baseplate 23 diffuser 24 light sources fix plate
3 heat-radiating substrate 31 light source fixed part 32 radiating parts 33 dispel the heat strip shape body
Arch heat sink strip 34 louvre 35 Baltimore groove on 331 times bending heat sink strips 332
4 fixing plate 5 case 51 air vent 6 union joints
61 sleeve 62 arc contiguous blocks 63 position teeth groove 64 spacing hole
7 sealing ring 8 sealed groove 9 positioning convex strip 10 positioning through hole.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment, the present invention is further illustrated with accompanying drawing, and the content that embodiment is mentioned not is limitation of the invention.Referring to Fig. 1 to Fig. 7, below in conjunction with accompanying drawing, the present invention is described in detail.
The high-power LED street lamp of a kind of convection type provided by the present invention heat radiation, including lamp adapter assembly 1, LED light source component 2 and heat-radiating substrate 3, one end of described lamp adapter assembly 1 is fixed together by fixture and heat-radiating substrate 2, and fixture described in the present embodiment is screw.As shown in Figure 1, heat-radiating substrate 3 is not only as light fixture cavity but also as heat dissipation cavity, described heat-radiating substrate 3 includes the light source fixed part 31 between being located therein and is positioned at the radiating part 32 of its both sides, described LED light source component 2 is fixed on light source fixed part 31 by fixture (i.e. screw), adds the contact area between LED light source component 2 and heat-radiating substrate 3；Described radiating part 31 is provided with integrated multiple heat radiation strip shape bodies 33 with it in array, between adjacent heat radiation strip shape body 33, forms louvre 34.Further, described heat radiation strip shape body 33 includes lower bending heat sink strip 331 and upper arch heat sink strip 332, described lower bending heat sink strip 331 and upper arch heat sink strip 332 are spaced distribution between two, and lower bending heat sink strip 331 and upper arch heat sink strip 332 are collectively forming heat dissipation channel.Owing to the area of dissipation of the strip shape body 331 that dispels the heat is relatively big, louvre 34 too increases area of dissipation, even if the environment at this high-power LED street lamp is relatively more severe, these are all conducive to quickly scattering and disappearing of heat, can extend the service life of light fixture.It addition, the radiating part 32 of the heat-radiating substrate 3 in the present invention is positioned at its both sides, traditional LED radiator is generally the aluminum radiator of die cast, and concentration is compared in its heat radiation, and its radiating rate is slow relative to the radiating rate of heat-radiating substrate 3 of the present invention.
Owing to LED light source component 2 is mounted on heat-radiating substrate 3, therefore heat-radiating substrate 3 bears the gravitational load of LED light source component 2.As shown in Figure 5, the radiating part 32 of described light source fixed part 31 and both sides forms Baltimore groove 35, being provided with matched fixing plate 4 on described Baltimore groove 35, described one end of fixing plate 4 and one end of lamp adapter assembly 1 removably connect, and the lower section of fixing plate 4 is fixing with light source fixed part 31 to be connected.In the present embodiment, being provided with two groups of LED light source component 2 and heat-radiating substrate 3 on fixing plate 4, heat-radiating substrate 3 and LED light source component 2 are played a supporting role by fixing plate 4, it is simple to the assembling of LED light source component 2 and heat-radiating substrate 3；And heat-radiating substrate 3 and LED light source component 2 are combined closely so that heat transmission between the two is faster.
As another preferred embodiment, the case 5 being provided above being completely covered by the radiating part 32 of both sides of described heat-radiating substrate 3, described case 5 removably connects with heat-radiating substrate 32, states case 5 and louvre 34 place is provided with multiple rows of air vent 51.LED street lamp provided by the present invention is the both sides of highway being applied under the environment that drenches with rain day, therefore arranging case 5 on heat-radiating substrate 3 can avoid heat-radiating substrate 3 to be exposed to the sun by day and cause material accelerated ageing, case 5 can so that the rainwater on lamp body be along ground of dripping on rainy day, it is to avoid hydrops situation occurs in heat-radiating substrate 3.
In the present embodiment, described lamp adapter assembly 1 includes upper cover body 11 and lower cover 12, is connected by screw and forms a power supply cavity, and be fixedly installed driving power supply (not marking in the drawings) in described power source cavity body between upper cover body 11 and lower cover 12；Described upper cover body 11 is provided with electric wire chamber 13, and the input power cord being provided with a wire connector 14, civil power input power cord and LED light source component 2 in described electric wire chamber 13 connects with driving power supply each through wire connector 14.Further, the top open part in described electric wire chamber 13 is provided with waterproof flange collar 15 and electric wire cover plate 16, and described electric wire cover plate 16 is fastened and connected with electric wire chamber 13, and the lower surface of electric wire cover plate 16 abuts with the upper surface of waterproof flange collar 15.The electric power connection line of the street lamp that tradition uses is generally positioned at outside lamp body, and the joint of connecting line is exposed to outside and there is potential safety hazard.The civil power input power cord of the LED street lamp of the present invention and the input power cord of LED light source component 2 are both connected to have in the electric wire chamber 13 of water-proof function, and be carry out solidus connection by wire connector 14, not only solve the potential safety hazard of the joint of connecting line, and be convenient for fast-wiring.
Further, the other end of described lamp adapter assembly 1 is provided with rotating union joint 6, and described union joint 6 includes sleeve 61 and arc contiguous block 62, and the inwall of one end and arc contiguous block 62 that described arc contiguous block 62 is located at sleeve 61 is provided with location teeth groove 63；Described sleeve 61 is one-body molded with arc contiguous block 62 in the present embodiment, and this makes arc contiguous block 62 have higher intensity, will not be susceptible to flexural deformation；And sleeve 61 both can coordinate the use of square lamp stand that circular lamp stand can also be coordinated to use.In described power source cavity body, corresponding described arc contiguous block 62 is provided with joint pin (not marking in the drawings), is provided with in one end of joint pin and positions the location tooth bar that teeth groove 63 cooperates；Being provided with spacing hole 64 on described arc contiguous block 62, described arc contiguous block 62 is connected with joint pin scalable through spacing hole 64 by securing member (this securing member is preferably hex bolts in the present embodiment).
When installing high-power LED street lamp of the present invention, arc contiguous block 62 is pre-fixed through spacing hole 64 and joint pin by hex bolts, then being intermeshed and turn to a certain predetermined angular by the location tooth bar of the location teeth groove 63 of arc contiguous block 62 with joint pin, then arc contiguous block 62 is tightened together by hex bolts further with joint pin.When needs adjust lighting angle, only need to somewhat unclamp hex bolts, after then lamp adapter assembly 1 rotates a certain angle around the location teeth groove 63 of union joint 6, fix hex bolts once again, reach quickly to regulate the lighting angle of LED street lamp.
Refer to Fig. 5 to Fig. 7, in the present embodiment, described LED light source component 2 includes LED chip 21, for installing LED-baseplate 22 and the diffuser 23 of LED chip 21, and described diffuser 23 is fixedly installed on the lower section of LED chip 21 light-emitting area；Described heat-radiating substrate 3 is provided with the fixing plate 24 of light source corresponding to described LED-baseplate 22 place coupling, the fixing plate 4 of described light source is fixing with LED-baseplate 22 combination through the light source fixed part 31 of heat-radiating substrate 3 by fixture (i.e. screw), and the upper surface of LED chip 21 directly contacts with light source fixed part 31 lower surface of heat-radiating substrate 3.The heat that LED chip 21 operationally produces is transferred directly to light source fixed part 31, then diffuses to the radiating part 32 of both sides so that quickly scattering and disappearing of heat, extends the service life of street lamp.
Further, described LED-baseplate 22, light source are fixing is provided with the sealing ring 7 for waterproof between plate 24 and heat-radiating substrate 3, the fixing plate 24 of described LED-baseplate 22, light source is separately provided for the sealed groove 8 of accommodating sealing ring 7, after described LED-baseplate 22, the fixing plate 24 of light source are fixed with heat-radiating substrate 3, described sealing ring 3 is fixed and clamped in sealed groove 8.Because LED chip 21 is the core component of whole LED street lamp, the safety of LED chip 21 it is critical that；Between LED-baseplate 22 and heat-radiating substrate 3, light source is fixing is respectively arranged with a sealing ring 7 for waterproof between plate 24 and heat-radiating substrate 3, there is very strong water resistance, even if LED street lamp is under the bad weather circumstances such as violent typhoon, heavy rain, still will not be subject to the intrusion of rainwater, be effectively ensured safety and the service life of LED street lamp.
Further, described sealing ring 7 is evenly arranged with multiple positioning convex strip 9, and positioning convex strip 9 is one-body molded with sealing ring 7；The corresponding described positioning convex strip 9 of described sealed groove 8 is provided with multiple positioning through hole 10, and after described sealing ring 7 is pressed in sealed groove 8, described some length of positioning convex strip 9 passes positioning through hole 10.Sealing ring 7 can be effectively ensured by positioning convex strip 9 and positioning through hole 10 to be pressed in sealed groove 8, not have sealing ring 7 and shift, it is to avoid cause losing sealing effectiveness.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, and this specification content should not be construed as limitation of the present invention.
Claims (9)
1. the high-power LED street lamp of a convection type heat radiation, including lamp adapter assembly, LED light source component and heat-radiating substrate, one end of described lamp adapter assembly is fixing with heat-radiating substrate to be connected, it is characterized in that: the light source fixed part that described heat-radiating substrate includes between being located therein and the radiating part being positioned at its both sides, described LED light source component is fixedly installed on light source fixed part, described radiating part is that array is provided with integrated multiple heat radiation strip shape bodies with it, forms louvre between adjacent heat radiation strip shape body；Described heat radiation strip shape body includes lower bending heat sink strip and upper arch heat sink strip, and described lower bending heat sink strip and upper arch heat sink strip are spaced distribution between two, and lower bending heat sink strip and upper arch heat sink strip are collectively forming heat dissipation channel.
2. the high-power LED street lamp of a kind of convection type according to claim 1 heat radiation, it is characterized in that: the radiating part of described light source fixed part and both sides forms Baltimore groove, described Baltimore groove is provided with matched fixing plate, described one end of fixing plate and one end of lamp adapter assembly removably connect, and the lower section of fixing plate is fixing with light source fixed part to be connected.
3. the high-power LED street lamp of a kind of convection type according to claim 1 heat radiation, it is characterized in that: the case being provided above being completely covered by the radiating part of both sides of described heat-radiating substrate, described case and heat-radiating substrate removably connect, and described case is provided with multiple rows of air vent corresponding to louvre place.
4. the high-power LED street lamp of a kind of convection type according to claim 1 heat radiation, it is characterized in that: described lamp adapter assembly includes upper cover body and lower cover, connected by screw between upper cover body and lower cover and form a power supply cavity, and be provided with driving power supply in described power source cavity body；Described upper cover body is provided with electric wire chamber, and described electric wire intracavity is provided with the input power cord of a wire connector, civil power input power cord and LED light source component and connects with driving power supply each through wire connector.
5. the high-power LED street lamp of a kind of convection type according to claim 4 heat radiation, it is characterized in that: the other end of described lamp adapter assembly is provided with rotating union joint, described union joint includes sleeve and arc contiguous block, and the inwall of one end and arc contiguous block that described arc contiguous block is located at sleeve is provided with location teeth groove；In described power source cavity body, corresponding described arc contiguous block is provided with joint pin, is provided with in one end of joint pin and positions the location tooth bar that teeth groove cooperates；Being provided with spacing hole on described arc contiguous block, described arc contiguous block is connected with joint pin scalable through spacing hole by securing member.
6. the high-power LED street lamp of a kind of convection type according to claim 4 heat radiation, it is characterized in that: the top open part in described electric wire chamber is provided with waterproof flange collar and electric wire cover plate, described electric wire cover plate and electric wire chamber are fastened and connected, and the lower surface of electric wire cover plate abuts with the upper surface of waterproof flange collar.
7. the high-power LED street lamp of a kind of convection type according to claim 1 heat radiation, it is characterized in that: described LED light source component includes LED chip, for installing LED-baseplate and the diffuser of LED chip, described diffuser is fixedly installed on the lower section of LED chip light-emitting area；Described heat-radiating substrate is provided with the fixing plate of light source corresponding to described LED-baseplate place coupling, and the fixing plate of described light source is fixing with LED-baseplate combination through heat-radiating substrate by fixture, and the upper surface of LED chip directly contacts with the lower surface of heat-radiating substrate.
8. the high-power LED street lamp of a kind of convection type according to claim 7 heat radiation, it is characterized in that: described LED-baseplate, light source are fixing is provided with the sealing ring for waterproof between plate and heat-radiating substrate, the fixing plate of described LED-baseplate, light source is separately provided for the sealed groove of accommodating sealing ring, after described LED-baseplate, the fixing plate of light source are fixed with heat-radiating substrate, described sealing ring is fixed and clamped in sealed groove.
9. the high-power LED street lamp of a kind of convection type according to claim 8 heat radiation, it is characterised in that: described sealing ring is evenly arranged with multiple positioning convex strip, and positioning convex strip and sealing ring one-body molded；The corresponding described positioning convex strip of described sealed groove is provided with multiple positioning through hole, and after described sealing ring is pressed in sealed groove, described positioning convex strip passes positioning through hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410124570.1A CN103939797B (en) | 2014-03-31 | 2014-03-31 | A kind of high-power LED street lamp of convection type heat radiation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410124570.1A CN103939797B (en) | 2014-03-31 | 2014-03-31 | A kind of high-power LED street lamp of convection type heat radiation |
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| CN103939797A CN103939797A (en) | 2014-07-23 |
| CN103939797B true CN103939797B (en) | 2016-07-06 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203797469U (en) * | 2014-03-31 | 2014-08-27 | 东莞勤上光电股份有限公司 | Convection heat radiation type high-power LED (light emitting diode) street lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100526707C (en) * | 2007-07-11 | 2009-08-12 | 宁波安迪光电科技有限公司 | Highpower LED street lamp |
| US7744247B2 (en) * | 2007-12-27 | 2010-06-29 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | LED lamp having double-side heat sink |
| TW201105897A (en) * | 2009-08-12 | 2011-02-16 | Leotek Electronics Corp | LED lamp and dissipating heat method of LED lamp |
| CN201517718U (en) * | 2009-09-25 | 2010-06-30 | 上海昕光照明科技有限公司 | LED road lamp capable of radiating heat by convection in air tunnel |
| IT1398450B1 (en) * | 2010-01-27 | 2013-02-22 | Beghelli Spa | HIGH-EFFICIENCY PUBLIC LIGHTING DEVICE |
| CN101871604B (en) * | 2010-06-08 | 2012-12-12 | 东莞勤上光电股份有限公司 | Power supply component of LED street lamp with rotatable connector |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203797469U (en) * | 2014-03-31 | 2014-08-27 | 东莞勤上光电股份有限公司 | Convection heat radiation type high-power LED (light emitting diode) street lamp |
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Effective date of registration: 20171101 Address after: 523565 Guangdong city of Dongguan province Changping Zhen Heng Jiang Jiang Xia Heng Industrial Road, set up a file Patentee after: KINGSUN OPTOELECTRONIC CO., LTD. Address before: 523565 Guangdong province Dongguan city Changping town Hengjiang Dongguan KingSun Au Optronics Co set up a file Patentee before: Dongguan Qinshang Photoelectric Co., Ltd. |
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Granted publication date: 20160706 Termination date: 20180331 |