CN101101107A - LED road lamp - Google Patents
LED road lamp Download PDFInfo
- Publication number
- CN101101107A CN101101107A CNA200710075286XA CN200710075286A CN101101107A CN 101101107 A CN101101107 A CN 101101107A CN A200710075286X A CNA200710075286X A CN A200710075286XA CN 200710075286 A CN200710075286 A CN 200710075286A CN 101101107 A CN101101107 A CN 101101107A
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- Prior art keywords
- plate
- led
- street lamp
- lamp body
- cavity
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical effect Effects 0.000 claims description 21
- 230000005855 radiation Effects 0.000 claims description 12
- -1 acryl Chemical group 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000863032 Trieres Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention relates to LED street lamp. It includes lamp body and bulb. The lamp body has front sides defined out cavity formed by side plate and bottom, back side set radiating wing. One end of the back side is set lamp post connecting gear. The bottom of the cavity is plane. A separator is set to divide it into two parts that sub and main cavities of which clearance is set between separator ends and cavity side wall. The invention supplies LED street lamp which has good heat dispersion and condense effect.
Description
Technical field
The utility model relates to the LED street lamp.
Background technology
The LED street lamp not only has the characteristics that colourity is good, non-maintaining, the life-span is long, the more important thing is more energy-conservation than conventional road lamp.The LED street lamp replaces conventional road lamp, is a utility revolution.High-power LED street lamp is in test or advanced development at present, and many international lighting industry giants also set foot in high-power LED street lamp one after another, but almost informal the application.Experimenter or the trier lamp bodies that adopt similar common street lamp cooperate the fan heat radiation more.The fan not only effect instability of dispelling the heat, and the life-span of fan is low, power consumption, need often to safeguard.Which kind of illuminator no matter transitional street lamps adopt, and substantially all will use reflection shield to carry out optical treatment, realizes optically focused; Yet reflection shield is that the light that illuminator shoots to side direction is handled, to the not effect of scattering of illuminator front light.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and a kind of excellent heat dispersion performance that has is provided, and has the LED street lamp of good spotlight effect.
The purpose of this utility model can be achieved through the following technical solutions:
The LED street lamp comprises lamp body and LED bulb, it is characterized in that lamp body has obverse and reverse, and the front of lamp body has a cavity that is defined by side plate and bottom surface, and the reverse side of lamp body is provided with the heat radiation wing, and an end of lamp body reverse side also is provided with light pole bindiny mechanism; Have a plane at the bottom of the cavity, also be provided with a dividing plate in the cavity, dividing plate is near an end at light pole bindiny mechanism place, and dividing plate is defined as two parts with cavity, near light pole bindiny mechanism at one end secondary cavity and the main cavity that is positioned at the dividing plate opposite side; Be provided with the gap that makes main cavity and secondary cavity intercommunication between dividing plate two ends and the cavity wall; The LED street lamp also comprises the LED showing plate, and the LED showing plate comprises the LED bulb of conductive sole plate, has printed circuit on the conductive sole plate, and the LED bulb is arranged on a face of conductive sole plate; The LED street lamp also comprises secondary optical lens, and secondary optical lens is arranged on the lens base plate, and lens base plate and conductive sole plate be arranged in parallel, the corresponding secondary optical lens of each LED bulb; The lens base plate is provided with some contour supporting positions towards a side of conductive sole plate, and supporting position butt conductive sole plate defines the lens base plate with the distance between the conductive sole plate; The lamp body side plate is provided with step away from the inboard of cavity bottom surface one end, and the LED street lamp also comprises lampshade, and lampshade is arranged on by securing member in the step of cavity side plate of lamp body, and lampshade and lamp body constitute the chamber of a sealing; The junction of lampshade and lamp body also is provided with sealing gasket; Lamp body is made for the heat conductive metal material, and the bottom surface of the secondary cavity of lamp body also has the wire hole towards reverse side.
The LED street lamp is characterized in that, the LED showing plate is made of several LED showing plates, and one group of LED bulb is set on each LED showing plate.
The LED street lamp is characterized in that, the lens base plate also is made of several lens daughter backplanes, and the lens daughter backplane is provided with one group of secondary optical lens, and secondary optical lens quantity is with that the position is set is corresponding with the LED bulb on the corresponding conductive sole plate.
The LED street lamp, it is characterized in that, described light pole bindiny mechanism comprises two fixture blocks with circular arc concave surface, following fixture block is arranged on the lamp body reverse side, be the part of lamp body, last fixture block freely is provided with, and the circular arc concave surface of last fixture block, following fixture block is provided with in opposite directions, last fixture block connects fixture block down by securing member, and light pole is arranged between fixture block circular arc concave surface and the following fixture block circular arc concave surface.
The LED street lamp is characterized in that, the LED street lamp also comprises constant-current source, and constant-current source is arranged in the secondary cavity, and constant-current source connects the printed circuit of conductive sole plate by lead.
The LED street lamp is characterized in that, the LED showing plate is made of several LED showing plates, and one group of LED bulb is set on each LED showing plate; The lens base plate also is made of several lens daughter backplanes, and the lens daughter backplane is provided with one group of secondary optical lens, and secondary optical lens quantity is with that the position is set is corresponding with the LED bulb on the corresponding conductive sole plate; The LED street lamp also comprises constant-current source, and constant-current source is arranged in the secondary cavity, and constant-current source comprises the constant-current device that several work alone, and each constant-current device connects corresponding LED showing plate by lead.
The LED street lamp is characterized in that, the wire hole place is provided with a water joint.
The LED street lamp is characterized in that, described lampshade is transparent acryl flat board, the surface of acrylic plate is provided with opaque silk-screen layer, the silk-screen layer near the acryl flat board around, the acrylic plate surface also has the transmission region of not establishing the silk-screen layer, the silk-screen layer be positioned at transmission region around.
The LED street lamp is characterized in that, the top of the heat radiation wing of lamp body reverse side constitutes a curved surface, and the height of the heat radiation wing in the zone relative with LED showing plate center is higher than other zone.
The LED street lamp is characterized in that, the lamp body of LED street lamp is that the aluminum or aluminum alloy material is by die cast.
The LED street lamp that the utility model relates to, lamp body is that thermal conductive metallic material is made, the heat that produces during the work of LED bulb is directly absorbed by lamp body by conductive sole plate, several heat radiation wings are set on the lamp body reverse side, compare with the fan heat radiation, the heat that can more directly the LED lamp be produced in time dispels the heat in air, and fault is few non-maintaining.The LED street lamp that the utility model relates to all is provided with a secondary optical lens before each LED bulb, and LED light is carried out secondary optics handle, the contrast prior art, the LED street lamp spotlight effect that the utility model relates to is better.
Description of drawings
Fig. 1 is the schematic diagram of first embodiment of the utility model.
Fig. 2 is the decomposing schematic representation of first embodiment of the utility model.
Fig. 3 is the schematic diagram of a job of first embodiment of the utility model module.
Fig. 4 is the decomposing schematic representation of a job of first embodiment of the utility model module.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
First embodiment of the present utility model is a kind of LED street lamp, with reference to figure 1, Fig. 2, Fig. 3, Fig. 4, the LED street lamp comprises lamp body 101 and LED bulb 103, lamp body 101 has obverse and reverse, the front of lamp body 101 has a cavity that is defined by side plate and bottom surface, the reverse side of lamp body is provided with heat radiation wing 1011, and an end of lamp body reverse side also is provided with light pole bindiny mechanism; Light pole bindiny mechanism comprises two fixture blocks with circular arc concave surface, following fixture block 1013 is arranged on lamp body 101 reverse side, it is the part of lamp body 101, last fixture block (not shown) freely is provided with, the circular arc concave surface of last fixture block, following fixture block 1013 is provided with in opposite directions, last fixture block connects fixture block 1013 down by screw, and light pole is arranged between fixture block circular arc concave surface and the following fixture block 1013 circular arc concave surfaces; Has a plane at the bottom of the cavity, also be provided with a dividing plate 1012 in the cavity, dividing plate 1012 is near an end at light pole bindiny mechanism places, and dividing plate 1012 is defined as two parts with cavity, near light pole bindiny mechanism at one end secondary cavity 1015 and the main cavity 1014 that is positioned at the dividing plate opposite side; Be provided with the gap that makes main cavity 1014 and secondary cavity 1015 intercommunications between dividing plate 1,012 two ends and the cavity wall; The LED street lamp also comprises the LED showing plate, and the LED showing plate comprises the LED bulb 103 of conductive sole plate 102, has printed circuit on the conductive sole plate 102, and LED bulb 103 is arranged on a face of conductive sole plate 102; The LED street lamp also comprises secondary optical lens 105, and saturating 105 mirrors of secondary optics are arranged on the lens base plate 104, and lens base plate 104 be arranged in parallel with conductive sole plate 102, each LED bulb 103 corresponding secondary optical lens 105; Lens base plate 104 is provided with some contour supporting position (not shown)s towards a side of conductive sole plate 102, and supporting position butt conductive sole plate 102 defines lens base plate 104 with the distance between the conductive sole plate 102; In the present embodiment, the supporting position is the rib of some protuberances, and the bearing surface of rib and conductive sole plate 102 is planes; The hole that lens base plate 104 and conductive sole plate 102 are used for being connected with lamp body 101 is by described rib; The hole of lens base plate 104 is the holes that have counterbore, and counterbore is arranged at the one side away from conductive sole plate 102; With reference to figure 3, Fig. 4, the lens base plate 104 of present embodiment also is provided with button bit, and conductive sole plate 102 also is provided with recess, is used for the pre-assembled of lens base plate 104 with conductive sole plate 102; Lamp body 101 side plates are provided with step away from the inboard of cavity bottom surface one end, and the LED street lamp also comprises lampshade 107, and lampshade 107 is arranged on by screw in the step of lamp body 101 cavity side plates, and lampshade 107 constitutes a chamber of sealing with lamp body 101; Lampshade 107 also is provided with sealing gasket 106 with the junction of lamp body 101; Lamp body 101 is made for the heat conductive metal material, and the bottom surface of the secondary cavity 1015 of lamp body 101 also has the wire hole 1016 towards reverse side.With reference to figure 2, the LED showing plate is made of several LED showing plates, and one group of LED bulb is set on each LED showing plate; The lens base plate also is made of several lens daughter backplanes, and the lens daughter backplane is provided with one group of secondary optical lens, and secondary optical lens quantity is with that the position is set is corresponding with the LED bulb on the corresponding conductive sole plate.With reference to figure 3, Fig. 4, lens base plate that installs secondary optical lens of a LED showing plate combination promptly constitutes a work module.Lampshade 107 is transparent acryl flat board, and the surface of acrylic plate is provided with opaque silk-screen layer, the silk-screen layer near the acryl flat board around, the acrylic plate surface also has the transmission region of not establishing the silk-screen layer, the silk-screen layer be positioned at transmission region around.In the present embodiment, wire hole 1015 places also are provided with a water joint, and water joint adopts commercial product.The top of the heat radiation wing 1011 of lamp body 101 reverse side constitutes a curved surface, and the height of the heat radiation wing 1011 in the zone relative with LED showing plate center is higher than other zone, to reach attractive in appearance simultaneously and effect efficiently radiates heat, arranging of LED showing plate center LED bulb 103 is the most intensive, the heat that produces during work is many, thereby needs bigger area of dissipation.Lamp body 101 is that aluminum alloy materials passes through die cast.
Second embodiment of the present utility model also is a kind of LED street lamp, be with the difference of first embodiment of the utility model, the LED street lamp also comprises constant-current source, constant-current source is arranged in the secondary cavity, constant-current source comprises the constant-current device that several work alone, and each constant-current device connects corresponding LED showing plate by lead.Be not both the different of material with the other of first embodiment, the LED road lamp body is the aluminium lamp body by die cast.
Claims (10)
1, a kind of LED street lamp comprises lamp body and LED bulb, it is characterized in that,
Lamp body has obverse and reverse, and the front of lamp body has a cavity that is defined by side plate and bottom surface, and the reverse side of lamp body is provided with the heat radiation wing, and an end of lamp body reverse side also is provided with light pole bindiny mechanism; Have a plane at the bottom of the cavity, also be provided with a dividing plate in the cavity, dividing plate is near an end at light pole bindiny mechanism place, and dividing plate is defined as two parts with cavity, near light pole bindiny mechanism at one end secondary cavity and the main cavity that is positioned at the dividing plate opposite side; Be provided with the gap that makes main cavity and secondary cavity intercommunication between dividing plate two ends and the cavity wall;
The LED street lamp also comprises the LED showing plate, and the LED showing plate comprises the LED bulb of conductive sole plate, has printed circuit on the conductive sole plate, and the LED bulb is arranged on a face of conductive sole plate; The LED street lamp also comprises secondary optical lens, and secondary optical lens is arranged on the lens base plate, and lens base plate and conductive sole plate be arranged in parallel, the corresponding secondary optical lens of each LED bulb; The lens base plate is provided with some contour supporting positions towards a side of conductive sole plate, and supporting position butt conductive sole plate defines the lens base plate with the distance between the conductive sole plate;
The lamp body side plate is provided with step away from the inboard of cavity bottom surface one end, and the LED street lamp also comprises lampshade, and lampshade is arranged on by securing member in the step of cavity side plate of lamp body, and lampshade and lamp body constitute the chamber of a sealing; The junction of lampshade and lamp body also is provided with sealing gasket;
Lamp body is made for the heat conductive metal material, and the bottom surface of the secondary cavity of lamp body also has the wire hole towards reverse side.
2, LED street lamp according to claim 1 is characterized in that, the LED showing plate is made of several LED showing plates, and one group of LED bulb is set on each LED showing plate.
3, LED street lamp according to claim 2, it is characterized in that, the lens base plate also is made of several lens daughter backplanes, and the lens daughter backplane is provided with one group of secondary optical lens, and secondary optical lens quantity is with that the position is set is corresponding with the LED bulb on the corresponding conductive sole plate.
4, LED street lamp according to claim 1, it is characterized in that, described light pole bindiny mechanism comprises two fixture blocks with circular arc concave surface, following fixture block is arranged on the lamp body reverse side, be the part of lamp body, last fixture block freely is provided with, and the circular arc concave surface of last fixture block, following fixture block is provided with in opposite directions, last fixture block connects fixture block down by securing member, and light pole is arranged between fixture block circular arc concave surface and the following fixture block circular arc concave surface.
5, LED street lamp according to claim 1 is characterized in that, the LED street lamp also comprises constant-current source, and constant-current source is arranged in the secondary cavity, and constant-current source connects the printed circuit of conductive sole plate by lead.
6, LED street lamp according to claim 1 is characterized in that, the LED showing plate is made of several LED showing plates, and one group of LED bulb is set on each LED showing plate; The lens base plate also is made of several lens daughter backplanes, and the lens daughter backplane is provided with one group of secondary optical lens, and secondary optical lens quantity is with that the position is set is corresponding with the LED bulb on the corresponding conductive sole plate; The LED street lamp also comprises constant-current source, and constant-current source is arranged in the secondary cavity, and constant-current source comprises the constant-current device that several work alone, and each constant-current device connects corresponding LED showing plate by lead.
7, LED street lamp according to claim 1 is characterized in that, the wire hole place is provided with a water joint.
8, LED street lamp according to claim 1, it is characterized in that, described lampshade is transparent acryl flat board, the surface of acrylic plate is provided with opaque silk-screen layer, the silk-screen layer is near around the acryl flat board, the acrylic plate surface also has the transmission region of not establishing the silk-screen layer, the silk-screen layer be positioned at transmission region around.
9, LED street lamp according to claim 1 is characterized in that, the top of the heat radiation wing of lamp body reverse side constitutes a curved surface, and the height of the heat radiation wing in the zone relative with LED showing plate center is higher than other zone.
According to the described LED street lamp of aforementioned any claim, it is characterized in that 10, the lamp body of LED street lamp is that the aluminum or aluminum alloy material is by die cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710075286XA CN100507358C (en) | 2007-07-24 | 2007-07-24 | LED street light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710075286XA CN100507358C (en) | 2007-07-24 | 2007-07-24 | LED street light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101107A true CN101101107A (en) | 2008-01-09 |
| CN100507358C CN100507358C (en) | 2009-07-01 |
Family
ID=39035506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710075286XA Expired - Fee Related CN100507358C (en) | 2007-07-24 | 2007-07-24 | LED street light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507358C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009012636A1 (en) * | 2007-07-20 | 2009-01-29 | Xuliang Li | A led street lamp |
| WO2010022625A1 (en) * | 2008-08-26 | 2010-03-04 | 天台县海威机电有限公司 | Led lamp module and street lamp equipped with the module |
| CN101251231B (en) * | 2008-02-02 | 2010-10-06 | 中微光电子(潍坊)有限公司 | LED road lamp |
| US8092049B2 (en) | 2008-04-04 | 2012-01-10 | Ruud Lighting, Inc. | LED light fixture |
| CN101571237B (en) * | 2008-04-30 | 2013-05-08 | 奥斯兰姆有限公司 | Light emitting diode module and lighting string comprising same |
| US9028087B2 (en) | 2006-09-30 | 2015-05-12 | Cree, Inc. | LED light fixture |
| US9039223B2 (en) | 2006-09-30 | 2015-05-26 | Cree, Inc. | LED lighting fixture |
| US9212811B2 (en) | 2011-05-05 | 2015-12-15 | Cree, Inc. | Lighting fixture with flow-through cooling |
| US9273833B2 (en) | 2013-11-01 | 2016-03-01 | Cree, Inc. | LED light fixtures with arrangement for electrical connection |
| US9441824B2 (en) | 2008-04-04 | 2016-09-13 | Cree, Inc. | LED light fixture with heat-dissipation-related high light output |
| US9541246B2 (en) | 2006-09-30 | 2017-01-10 | Cree, Inc. | Aerodynamic LED light fixture |
| CN111810893A (en) * | 2020-08-05 | 2020-10-23 | 高邮市神居客电商产业园管理有限公司 | Environment-friendly LED street lamp |
| USRE49637E1 (en) | 2008-04-04 | 2023-08-29 | Ideal Industries Lighting Llc | Systems and methods for high output, high color quality light |
-
2007
- 2007-07-24 CN CNB200710075286XA patent/CN100507358C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9039223B2 (en) | 2006-09-30 | 2015-05-26 | Cree, Inc. | LED lighting fixture |
| US9541246B2 (en) | 2006-09-30 | 2017-01-10 | Cree, Inc. | Aerodynamic LED light fixture |
| US9534775B2 (en) | 2006-09-30 | 2017-01-03 | Cree, Inc. | LED light fixture |
| US9261270B2 (en) | 2006-09-30 | 2016-02-16 | Cree, Inc. | LED lighting fixture |
| US9028087B2 (en) | 2006-09-30 | 2015-05-12 | Cree, Inc. | LED light fixture |
| WO2009012636A1 (en) * | 2007-07-20 | 2009-01-29 | Xuliang Li | A led street lamp |
| CN101251231B (en) * | 2008-02-02 | 2010-10-06 | 中微光电子(潍坊)有限公司 | LED road lamp |
| US9441824B2 (en) | 2008-04-04 | 2016-09-13 | Cree, Inc. | LED light fixture with heat-dissipation-related high light output |
| US9039241B2 (en) | 2008-04-04 | 2015-05-26 | Cree, Inc. | LED light fixture |
| US8622584B2 (en) | 2008-04-04 | 2014-01-07 | Cree, Inc. | LED light fixture |
| US8092049B2 (en) | 2008-04-04 | 2012-01-10 | Ruud Lighting, Inc. | LED light fixture |
| USRE49637E1 (en) | 2008-04-04 | 2023-08-29 | Ideal Industries Lighting Llc | Systems and methods for high output, high color quality light |
| CN101571237B (en) * | 2008-04-30 | 2013-05-08 | 奥斯兰姆有限公司 | Light emitting diode module and lighting string comprising same |
| WO2010022625A1 (en) * | 2008-08-26 | 2010-03-04 | 天台县海威机电有限公司 | Led lamp module and street lamp equipped with the module |
| US9212811B2 (en) | 2011-05-05 | 2015-12-15 | Cree, Inc. | Lighting fixture with flow-through cooling |
| US9273833B2 (en) | 2013-11-01 | 2016-03-01 | Cree, Inc. | LED light fixtures with arrangement for electrical connection |
| CN111810893A (en) * | 2020-08-05 | 2020-10-23 | 高邮市神居客电商产业园管理有限公司 | Environment-friendly LED street lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100507358C (en) | 2009-07-01 |
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Owner name: DONGGUAN QINSHANG PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: LI XULIANG Effective date: 20080215 |
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Effective date of registration: 20080215 Address after: Guangdong province Dongguan city Changping town Hengjiang post 523565: set up a file encoding Applicant after: Dongguan Qinshang Photoelectric Co., Ltd. Address before: Guangdong province Dongguan city Changping town Hengjiang Building Management District KingSun group limited post encoding: 523000 Applicant before: Li Xuliang |
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