CN105387353B - Intelligent LED lamp with suspension loop - Google Patents
Intelligent LED lamp with suspension loop Download PDFInfo
- Publication number
- CN105387353B CN105387353B CN201510843228.1A CN201510843228A CN105387353B CN 105387353 B CN105387353 B CN 105387353B CN 201510843228 A CN201510843228 A CN 201510843228A CN 105387353 B CN105387353 B CN 105387353B
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- Prior art keywords
- arm
- arc
- circle
- antenna
- led
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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.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
-
- 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
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
Abstract
The invention discloses an intelligent LED lamp with a suspension loop. The intelligent LED lamp comprises an upper shell and a lower shell, and an LED lens is arranged at the bottom of the lower shell; an LED lighting unit is arranged in the lower shell, and a control circuit device for controlling the LED lighting unit to be lighted and stopped is arranged in the upper shell; the control circuit device comprises a main control chip, a communication module, an LED driving chip and a power source module; the LED driving chip is electrically connected with the LED lighting unit and used for driving the LED lighting unit; the power source module is electrically connected with the main control chip, the communication module and the LED driving chip; and an antenna is pivoted to the outer wall of the upper shell. The antenna is arranged on the outer wall of a lamp shell, so that the communication quality of the antenna is improved; and through an improvement of the internal structure of the antenna, the antenna performance is strengthened, and the user experience of the LED lamp is improved.
Description
Technical field
The present invention relates to a kind of intelligent LED lamp being provided with hangers.
Background technology
As publication number：A kind of LED intelligent lamp disclosed in the patent of CN204254342U, increasing light fixture to be realized using intelligent control method, smart home has become as the main flow of current light fixture, what Intelligent lamp structure often designed at present is not quite reasonable, signal performance is poor to lead to it to accept, and therefore directly affects the experience of user；The performance receiving and launching if necessary to the signal improving LED lamp, it is critical only that can the antenna of its setting possess excellent performance, if the antenna of a good configuration of routers should have very strong gain and other electric properties；And smart home generally carrys out the network frequency-selecting as WIFI using 2.4G frequency range and 5G frequency range in frequency range at present, therefore antenna has preferably electric property on two wave bands should be the larger challenge that smart home signal is accepted.
Content of the invention
It is an object of the invention to overcoming disadvantages described above, provide a kind of antenna performance excellent intelligent LED lamp.
For achieving the above object, the concrete scheme of the present invention is as follows：A kind of intelligent LED lamp being provided with hangers, includes upper shell and lower house, and described lower house bottom is provided with LED lens；It is provided with LED illumination unit in described lower casing body, in described upper casing body, be provided with the control circuit device for controlling LED illumination unit to light and to close；Described control circuit device includes main control chip, communication module, LED drive chip and power module；Described LED drive chip is electrically connected with LED illumination unit, for driving LED illumination unit；Described power module is electrically connected with main control chip, communication module, LED drive chip respectively；Described main control chip is electrically connected with LED drive chip, for controlling LED drive chip；The antenna that described communication module includes communication chip and signal connects therewith；Described antenna is articulated in upper shell outer wall；The top surface of described upper shell is provided with for LED is inhaled the sucker on supporter.
Wherein, described antenna includes insulation cylinder, is provided with multiple antenna stacks in described insulation cylinder, and described antenna stack is provided with communication oscillator, is provided with separation layer, described separation layer is provided with division board between two antenna stacks；The surface of described insulation cylinder is also coated with anti oxidation layer；The bottom of described insulation cylinder is additionally provided with pole, and described pole is provided with for being articulated in insulation cylinder using the axis hole on equipment.
Wherein, described communication oscillator includes the pcb board of circle, it is provided with six micro-strip oscillator units around arc distances such as centers on each pcb board, each micro-strip oscillator unit described includes the circle arm of triangle, and each edge of described circle arm all extends internally the first arc radiation arm and the second arc radiation arm of arc；The radius of described second arc radiation arm is more than the first arc radiation arm；Also include the arc extending internally out from each edge and isolate arm, the radius that described arc isolates arm is more than the second arc radiation arm, and the width that described arc isolates arm is gradually reduced from the distance at two ends to center；Described arc isolation arm is made up of semiconductor material；The base of described circle arm is provided with isolation strip, and described isolation strip is dielectric, and the base of circle arm is disconnected by it；It is equipped with the 3rd radiation arm, one end of described 3rd radiation arm is provided with the ring radiation arm of annular, and described ring radiation arm is at the angle of circle arm between the arm of arc isolation two-by-two；The other end of described 3rd radiation arm is provided with the 4th arc radiation arm of arc, and the radius of three the 4th arc radiation arms in each circle arm described is identical, and forms a circle；The center of described circle arm is provided with a signal feed hole, and described signal feed hole is of coupled connections with three the 4th arc radiation arm feeds respectively；The bottom surface of described pcb board also is provided with welding hole corresponding with signal feed hole；Described 3rd radiation arm is provided with multiple aperture being placed equidistant；The edge of described pcb board is provided with a circle conductive arm, and described conductive arm is of coupled connections with each circle arm feed；The center of pcb board top surface is provided with a coupling disk, the pcb board back side is provided with balun pillar, described balun pillar electrically conducts with coupling disk, and the free end of described balun pillar is provided with Capacitance Coupled oscillator arms, and it is in fan-shaped sub- arm that described Capacitance Coupled oscillator arms include three；
Described division board is a metal circular plate, and described division board is provided with triangle through hole corresponding with six micro-strip oscillator units around arc distances such as centers；Described triangle through hole is identical with the size of circle arm.
Wherein, if the quantity of aperture is N, the length of described 3rd radiation arm is Lmm, and the radius of described ring radiation arm is Kmm, then K=L/N.
Wherein, the quantity of described aperture is six.
Wherein, the angle of the circle arm of described triangle is fillet.
Wherein, described circle arm is equilateral triangle, and the inner edge length of side of described circle arm is 20mm.
Wherein, described Capacitance Coupled oscillator arms and the distance of pcb board are 15mm.
Wherein, the outside of described circle arm is zigzag side.
Wherein, the bottom of described LED lens is additionally provided with the cambered surface depression for even light；
Wherein, also include the solar panel that patch is photographed upper shell outer wall, described solar panel is connected with power module；
Wherein, two semicircle hangers for hanging on LED on supporter located at upper shell are also included；
Beneficial effects of the present invention are：By antenna located at the outer wall of lamp housing, improve antenna communication quality, improved by the internal structure of antenna, strengthen antenna performance, increase the Consumer's Experience sense of LED.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic diagram of the control circuit device of the present invention；
Fig. 3 is the sectional view of the antenna of the present invention；
Fig. 4 is the top view of the communication oscillator of the present invention；
Fig. 5 is the upward view of the communication oscillator of the present invention；
Fig. 6 is the side view of the communication oscillator of the present invention；
Fig. 7 is the top view of the division board of the present invention；
Fig. 8 is the structural representation of the micro-strip oscillator unit of the present invention；
Fig. 9 is the return loss test chart of this antenna when there is division board；
Figure 10 is the isolation performance test figure of this antenna when there is division board；
Figure 11 is directional diagram during this antenna 2.4GHz；
Figure 12 is directional diagram during this antenna 5.0GHz；
Description of reference numerals in Fig. 1 to Figure 12：
A1- upper shell；A2- lower house；A3- hangers；A4- sucker；A5- solar panel；A6-LED lens；A7- cambered surface is recessed；
D1- insulation cylinder；D2- antenna stack；D3- separation layer；D4- pole；
P1-PCB plate；P2- division board；P3- balun pillar；P4- Capacitance Coupled oscillator arms；P11- conductive arm；P12- welding hole；P21- triangle through hole；
K1- encloses arm；K2- isolation strip；K3- the first arc radiation arm；K4- the second arc radiation arm；K5- ring radiation arm；K6- arc isolates arm；K7- the 3rd radiation arm；K8- aperture；K9- the 4th arc radiation arm.
Specific embodiment
The present invention is further detailed explanation with specific embodiment below in conjunction with the accompanying drawings, is not that the practical range of the present invention is confined to this.
As shown in Figures 1 to 12, a kind of intelligent LED lamp being provided with hangers described in the present embodiment, includes upper shell A1 and lower house A2, and described lower house A2 bottom is provided with a LED lens A6；It is provided with LED illumination unit in described lower house A2, in described upper shell A1, be provided with the control circuit device for controlling LED illumination unit to light and to close；Described control circuit device includes main control chip, communication module, LED drive chip and power module；Described LED drive chip is electrically connected with LED illumination unit, for driving LED illumination unit；Described power module is electrically connected with main control chip, communication module, LED drive chip respectively；Described main control chip is electrically connected with LED drive chip, for controlling LED drive chip；The antenna that described communication module includes communication chip and signal connects therewith；Described antenna is articulated in upper shell A1 outer wall；The top surface of described upper shell A1 is provided with for LED is inhaled the sucker A4 on supporter.The present invention can be inhaled with sucker A4 and use on roof or other cabinets, described power module includes battery but is not limited to battery.Described main control chip controls LED drive chip to control lighting and extinguishing of LED illumination unit.Described communication module is wirelessly connected with extraneous internet or remote control, to receive the command signal controlling lamp to extinguish and light.
A kind of intelligent LED lamp being provided with hangers described in the present embodiment, described antenna includes insulation cylinder D1, it is provided with multiple antenna stack D2 in described insulation cylinder D1, described antenna stack D2 is provided with communication oscillator, it is provided with separation layer D3, described separation layer D3 is provided with division board P2 between two antenna stack D2；The surface of described insulation cylinder D1 is also coated with anti oxidation layer；The bottom of described insulation cylinder D1 is additionally provided with pole D4, and described pole D4 is provided with for being articulated in insulation cylinder D1 using the axis hole on equipment.Described antenna by pole D4, antenna is articulated on upper shell A1；
A kind of intelligent LED lamp being provided with hangers described in the present embodiment, described communication oscillator includes the pcb board P1 of circle, it is provided with six micro-strip oscillator units around arc distances such as centers on each pcb board P1, each micro-strip oscillator unit described includes the circle arm K1 of triangle, and each edge of described circle arm K1 all extends internally the first arc radiation arm K3 and the second arc radiation arm K4 of arc；The radius of described second arc radiation arm K4 is more than the first arc radiation arm K3；Also include the arc extending internally out from each edge and isolate arm K6, the radius that described arc isolates arm K6 is more than the second arc radiation arm K4, and the width that described arc isolates arm K6 is gradually reduced from the distance at two ends to center；Described arc isolation arm K6 is made up of semiconductor material；The base of described circle arm K1 is provided with isolation strip K2, and described isolation strip K2 is dielectric, and the base of circle arm K1 is disconnected by it；It is equipped with a 3rd radiation arm K7, one end of described 3rd radiation arm K7 is provided with the ring radiation arm K5 of annular, and described ring radiation arm K5 is at the angle of circle arm K1 between the arm K6 of arc isolation two-by-two；The other end of described 3rd radiation arm K7 is provided with the 4th arc radiation arm K9 of arc, and the radius of three the 4th arc radiation arm K9 in described each circle arm K1 is identical, and forms a circle；The center of described circle arm K1 is provided with a signal feed hole, and described signal feed hole is of coupled connections with three the 4th arc radiation arm K9 feeds respectively；The bottom surface of described pcb board P1 also is provided with welding hole P12 corresponding with signal feed hole；Described 3rd radiation arm K7 is provided with multiple aperture K8 being placed equidistant；The edge of described pcb board P1 is provided with a circle conductive arm P11, and described conductive arm P11 is of coupled connections with each circle arm feed；The center of pcb board P1 top surface is provided with a coupling disk, the pcb board P1 back side is provided with balun pillar P3, described balun pillar P3 electrically conducts with coupling disk, and the free end of described balun pillar P3 is provided with Capacitance Coupled oscillator arms P4, and it is in fan-shaped sub- arm that described Capacitance Coupled oscillator arms P4 include three；Described division board P2 is a metal circular plate, and described division board P2 is provided with triangle through hole P21 corresponding with six micro-strip oscillator units around arc distances such as centers；Described triangle through hole P21 is identical with the size of circle arm K1.
By the microstrip circuit structure design not less than 500 times, and by being not less than under 500 l-G simulation tests and parameter adjustment, finally determine above-mentioned antenna structure and matched division board P2 structure；After multiple antenna stack D2 are fed coupling simultaneously, it shows excellent electric performance in 2.4GHz and 5.0GHz to this antenna, averagely reaches 9.7dBi under bandwidth near this frequency range；
Concrete actual test result such as following table HFSS software emulation obtains：
And other electric properties also have more excellent result, its return loss is superior to -10dB in the return loss of 2.4-2.48GHz frequency range and 5.15-5.875GHz frequency range；And isolation is due to the reason such as isolation strip K2 of setting, it is better than -18dB in the isolation loss of 2.4-2.48GHz and 5.15-5.875GHz frequency range；
Prove that this antenna possesses preferable performance in itself；In addition, after plus division board P2, its return loss and isolation all show more preferably performance, concrete such as Fig. 9, its return loss is superior to -15dB in the return loss of 2.4-2.48GHz frequency range and 5.15-5.875GHz frequency range；As Figure 10, isolation is in the isolation loss better than -20dB of 2.4-2.48GHz and 5.15-5.875GHz frequency range.Here it is worth noting that plain disk element antenna is changed on antenna stack D2 by this, equally add this division board P2, ordinary antennas effect electrical property improves less or do not improve, and therefore this division board P2 matches each other with antenna itself and facilitation is obvious.
In addition, its directionality of this antenna, as is illustrated by figs. 11 and 12, under two frequency, it is omni-directional antenna.
Embodiment 2.
If the quantity of aperture K8 is N, the length of described 3rd radiation arm K7 is Lmm, and the radius of described ring radiation arm K5 is Kmm, then K=L/N.Found by test of many times, if meeting above-mentioned specification, the performance of antenna will more optimize, and especially in terms of return loss, its return loss is superior to -17dB in the return loss of 2.4-2.48GHz frequency range and 5.15-5.875GHz frequency range.
Embodiment 3.
A kind of intelligent LED lamp being provided with hangers described in the present embodiment, the quantity of described aperture K8 is six.Wherein, the angle of the circle arm K1 of described triangle is fillet.Wherein, described circle arm K1 is equilateral triangle, and the inner edge length of side of described circle arm K1 is 20mm.Wherein, described Capacitance Coupled oscillator arms P4 and the distance of pcb board P1 are 15mm.Wherein, the outside of described circle arm K1 is zigzag side.Wherein, the bottom of described LED lens A6 is additionally provided with the cambered surface depression A7 for even light；By above-mentioned setting, the gain of antenna is higher, isolation more preferable, standing-wave ratio performance is also more excellent.
A kind of intelligent LED lamp being provided with hangers described in the present embodiment, also includes the solar panel A5 that patch is photographed upper shell A1 outer wall, and described solar panel A5 is connected with power module；Cell panel is powered for carrying out complementarity to power module, can save the electric energy of power module.
A kind of intelligent LED lamp being provided with hangers described in the present embodiment, also includes two semicircle hangers A3 for hanging on LED on supporter located at upper shell A1.
By antenna located at the outer wall of lamp housing, improve antenna communication quality, improved by the internal structure of antenna, strengthen antenna performance, increase the Consumer's Experience sense of LED.The above is only several preferred embodiments of the present invention, therefore the equivalence changes done of the construction described in all scopes according to present patent application, feature and principle or modification, it is included in the protection domain of present patent application.
Claims (7)
1. a kind of intelligent LED lamp being provided with hangers it is characterised in that：Include upper shell (A1) and lower house (A2), described lower house (A2) bottom is provided with LED lens (A6)；It is provided with LED illumination unit in described lower house (A2), in described upper shell (A1), be provided with the control circuit device for controlling LED illumination unit to light and to close；Described control circuit device includes main control chip, communication module, LED drive chip and power module；Described LED drive chip is electrically connected with LED illumination unit, for driving LED illumination unit；Described power module is electrically connected with main control chip, communication module, LED drive chip respectively；Described main control chip is electrically connected with LED drive chip, for controlling LED drive chip；The antenna that described communication module includes communication chip and signal connects therewith；Described antenna is articulated in upper shell (A1) outer wall；The top surface of described upper shell (A1) is provided with for LED is inhaled the sucker (A4) on supporter；
Also include two semicircle hangers (A3) for hanging on LED on supporter located at upper shell (A1)；
Described antenna includes insulation cylinder（D1）, described insulation cylinder（D1）Inside it is provided with multiple antenna stacks（D2）, described antenna stack（D2）It is provided with communication oscillator, two antenna stacks（D2）Between be provided with separation layer（D3）, described separation layer（D3）It is provided with division board（P2）；Described insulation cylinder（D1）Surface be also coated with anti oxidation layer；Described insulation cylinder（D1）Bottom be additionally provided with pole（D4）, described pole（D4）It is provided with for by insulation cylinder（D1）It is articulated in using the axis hole on equipment；
Described communication oscillator includes the pcb board of circle（P1）, each pcb board（P1）On be provided with six micro-strip oscillator units around arc distances such as centers, each micro-strip oscillator unit described includes the circle arm of triangle（K1）, described circle arm（K1）Each edge all extend internally and have the first arc radiation arm of arc（K3）With the second arc radiation arm（K4）；Described second arc radiation arm（K4）Radius be more than the first arc radiation arm（K3）；Also include the arc extending internally out from each edge and isolate arm（K6）, described arc isolation arm（K6）Radius be more than the second arc radiation arm（K4）, described arc isolation arm（K6）Width be gradually reduced from the distance at two ends to center；Described arc isolates arm（K6）It is made up of semiconductor material；Described circle arm（K1）Base be provided with isolation strip（K2）, described isolation strip（K2）For dielectric, it will enclose arm（K1）Base disconnect；The arm of arc isolation two-by-two（K6）Between be equipped with the 3rd radiation arm（K7）, described 3rd radiation arm（K7）One end be provided with the ring radiation arm of annular（K5）, described ring radiation arm（K5）Located at circle arm（K1）Angle at；Described 3rd radiation arm（K7）The other end be provided with the 4th arc radiation arm of arc（K9）, each circle arm described（K1）Three interior the 4th arc radiation arms（K9）Radius identical, and form a circle；Described circle arm（K1）Center be provided with a signal feed hole, described signal feed hole respectively with three the 4th arc radiation arms（K9）Feed is of coupled connections；Described pcb board（P1）Bottom surface also be provided with welding hole corresponding with signal feed hole（P12）；Described 3rd radiation arm（K7）It is provided with multiple aperture being placed equidistant（K8）；Described pcb board（P1）Edge be provided with a circle conductive arm（P11）, described conductive arm（P11）It is of coupled connections with each circle arm feed；Pcb board（P1）The center of top surface is provided with a coupling disk, pcb board（P1）The back side is provided with balun pillar（P3）, described balun pillar（P3）Electrically conduct with coupling disk, described balun pillar（P3）Free end be provided with Capacitance Coupled oscillator arms（P4）, described Capacitance Coupled oscillator arms（P4）Including three is in fan-shaped sub- arm；
Described division board（P2）For a metal circular plate, described division board（P2）On be provided with triangle through hole corresponding with six micro-strip oscillator units around arc distances such as centers（P21）；Described triangle through hole（P21）With circle arm（K1）Size identical.
2. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：If aperture（K8）Quantity be N, described 3rd radiation arm（K7）Length be Lmm, described ring radiation arm（K5）Radius be Kmm, then K=L/N.
3. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：Described aperture（K8）Quantity be six.
4. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：The circle arm of described triangle（K1）Angle be fillet.
5. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：Described circle arm（K1）For equilateral triangle, described circle arm（K1）The inner edge length of side be 20mm.
6. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：Described Capacitance Coupled oscillator arms（P4）With pcb board（P1）Distance be 15mm.
7. a kind of intelligent LED lamp being provided with hangers according to claim 1 it is characterised in that：Described circle arm（K1）Outside be zigzag side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843228.1A CN105387353B (en) | 2015-11-26 | 2015-11-26 | Intelligent LED lamp with suspension loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843228.1A CN105387353B (en) | 2015-11-26 | 2015-11-26 | Intelligent LED lamp with suspension loop |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105387353A CN105387353A (en) | 2016-03-09 |
| CN105387353B true CN105387353B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510843228.1A Expired - Fee Related CN105387353B (en) | 2015-11-26 | 2015-11-26 | Intelligent LED lamp with suspension loop |
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| CN (1) | CN105387353B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889769A (en) * | 2016-04-18 | 2016-08-24 | 谢广鹏 | Intelligent LED lamp with fan |
| CN105691570A (en) * | 2016-04-20 | 2016-06-22 | 欧志洪 | Positionable water conservancy data collecting robot |
| CN107588349B (en) * | 2016-07-08 | 2021-06-15 | 卡任特照明解决方案有限公司 | Lamp set |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858463B1 (en) * | 2003-07-28 | 2007-08-24 | Centre Nat Rech Scient | METHOD AND SYSTEM FOR MAKING THIN-FILM SUPERCONDUCTING INDUCTIVE COMPONENTS, AND DEVICES INCLUDING SUCH COMPONENTS |
| CN201536155U (en) * | 2009-09-29 | 2010-07-28 | 哈尔滨工程大学 | High-gain broadband omnidirectional antenna for mobile communication |
| CN104214635A (en) * | 2013-05-31 | 2014-12-17 | 深圳市海洋王照明工程有限公司 | Airport parking apron lamp |
| CN203883118U (en) * | 2014-04-30 | 2014-10-15 | 陕西北斗伟丰导航技术有限公司 | Multilayer microstrip antenna |
| CN204254342U (en) * | 2014-12-11 | 2015-04-08 | 深圳市智捷通科技有限公司 | Intelligent led lamp |
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| CN105387353A (en) | 2016-03-09 |
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Effective date of registration: 20170106 Address after: South Chuang-tzu Avenue and weft two road 233500 Anhui city of Bozhou province Mengcheng County Economic Development Zone intersection Applicant after: Anhui Zhong'an Juneng Electric Technology Co. Ltd. Address before: 523000 Guangdong Province, Dongguan Songshan Lake University Road No. Applicant before: Ou Zhihong |
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