CN111720780A - High heat dissipation canned type LED street lamp - Google Patents
High heat dissipation canned type LED street lamp Download PDFInfo
- Publication number
- CN111720780A CN111720780A CN202010636671.2A CN202010636671A CN111720780A CN 111720780 A CN111720780 A CN 111720780A CN 202010636671 A CN202010636671 A CN 202010636671A CN 111720780 A CN111720780 A CN 111720780A
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- CN
- China
- Prior art keywords
- street lamp
- metal radiating
- air bag
- guide rod
- radiating fin
- Prior art date
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
- F21V29/717—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/80—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses a high-heat-dissipation sealed LED street lamp, which comprises a street lamp post, wherein a guide rod is arranged at the top of the street lamp post, a lamp box is fixedly sleeved on the guide rod, an electric appliance cavity is arranged in the lamp box, a power panel is arranged in the electric appliance cavity, a light-emitting component is arranged outside the lamp box, a gas storage bag is arranged at the top of the lamp box, the gas storage bag is communicated with a movable cavity in the lamp box through a gas guide tube, the top of the guide rod is inserted into the movable cavity and is fixed, more than one metal radiating fin is movably arranged outside the guide rod, the electric appliance cavity is communicated with the movable cavity through more than one gas guide hole, a limiting shaft sleeve is arranged outside the lamp box, the limiting shaft sleeve is slidably arranged on the guide rod, and more; according to the LED street lamp, sealed heat dissipation is realized by adopting a sealed heat exchange mode, so that not only is dustproof and waterproof performance guaranteed, but also excellent heat dissipation performance is guaranteed, and the service life of the street lamp is prolonged.
Description
Technical Field
The invention relates to a street lamp, in particular to a high-heat-dissipation sealed LED street lamp.
Background
At present, the street lamp is a lighting lamp commonly used on the roadside, and the street lamp needs good heat dissipation performance because the street lamp is in a working state for a long time. The conventional cooling mode is a cooling mode of a cooling fin, dust on the roadside is large, and the dust is easy to enter in an airflow cooling mode, so that the service life is shortened.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-heat-dissipation sealed LED street lamp, which changes the traditional sealed heat dissipation mode, so that the sealed heat dissipation can be in butt joint with the outside air, the heat dissipation performance can be improved while the sealing performance is ensured, and the service life of the street lamp is prolonged.
The invention is realized by the following technical scheme: a high heat dissipation sealed LED street lamp comprises a street lamp post, a guide rod is arranged at the top of the street lamp post, a lamp box is fixedly sleeved on the guide rod, an electric appliance cavity is arranged in the lamp box, a power panel is arranged in the electric appliance cavity, a light-emitting component is arranged outside the lamp box, an air storage bag is arranged at the top of the lamp box and is communicated with a movable cavity in the lamp box through an air duct, the top of the guide rod is inserted into the movable cavity and is fixed, more than one metal radiating fin is movably arranged outside the guide rod, the electric appliance cavity is communicated with the movable cavity through more than one air guide hole, a limiting shaft sleeve is arranged outside the lamp box and is slidably arranged on the guide rod, more than one connecting rod is arranged at the bottom of the limiting shaft sleeve, the connecting rod penetrates through the street lamp post and extends into a hollow cavity in the street lamp post, the extending end of the connecting rod is connected with a connecting, the top of the jacking air bag is in contact with the lower end face of the connecting plate, the bottom of the jacking air bag is connected with an underground part through an air pipe, the underground part is embedded on a road surface, and the jacking air bag is jacked up and the limiting shaft sleeve is compressed towards the metal radiating fin through extruding the underground part.
Preferably, the buried part comprises a buried box, a sealing air bag is arranged in the buried box, a metal base plate is arranged at the top of the sealing air bag, the metal base plate is flush with the upper end face of the buried box in a natural state, and gas in the sealing air bag is extruded into the top pressure air bag by extruding the sealing air bag.
According to a preferable technical scheme, the metal radiating fins comprise more than one first metal radiating fin and one second metal radiating fin, the second metal radiating fins are arranged at the tops of the first metal radiating fins, a supporting sleeve is arranged at the bottom of each second metal radiating fin, and the second metal radiating fins are always located in the movable cavity through the supporting sleeve and seal the bottom opening end of the movable cavity.
As the preferred technical scheme, the air storage bag adopts a flexible rubber bag, and more than one heat conduction needle is embedded into the top surface of the flexible rubber bag.
As the preferred technical scheme, the metal radiating fin is circular, the inner section of the movable cavity is circular, and the outer wall surface of the metal radiating fin is wrapped with a layer of silica gel film layer for increasing the friction force between the metal radiating fin and the inner wall of the movable cavity, so that the metal radiating fin slowly slides along the guide rod.
Preferably, the pressing air bag is compressed in a natural state, and is pressed up by injecting gas, and the sealing air bag in the underground box is made of elastic rubber materials with deformation recovery capability.
The invention has the beneficial effects that: the metal radiating fins can be butted with external air, so that an internal and external heat exchange mode is realized, the radiating efficiency is improved, meanwhile, the sealing performance can be ensured, and the service life of the lamp is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the present invention in its natural state;
FIG. 3 is a partial schematic view of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 2, the invention relates to a high heat dissipation sealed type LED street lamp, which comprises a street lamp post 11, a guide rod 66 is arranged at the top of the street lamp post 11, a lamp box 3 is fixedly sleeved on the guide rod 66, an electrical cavity is arranged in the lamp box 3, a power panel 5 is arranged in the electrical cavity, a light-emitting component 1 is arranged outside the lamp box 3, an air storage bag 72 is arranged at the top of the lamp box 3, the air storage bag 72 is communicated with a movable cavity 4 inside the lamp box 3 through an air duct, the top of the guide rod 66 is inserted and fixed in the movable cavity, more than one metal heat sink is movably arranged outside the guide rod 66, the electrical cavity is communicated with the movable cavity 4 through more than one air guide hole 73, a limit shaft sleeve 6 is arranged outside the lamp box 3, the limit shaft sleeve 6 is slidably arranged on the guide rod 66, more than one connecting rod 18 is arranged at the bottom of the limit shaft sleeve 6, the connecting rod 18 passes through the street, the stretching end of the pressing air bag is connected with a connecting plate 8, a pressing air bag 9 is arranged in the hollow cavity, the top of the pressing air bag 9 is in contact with the lower end face of the connecting plate 8, the bottom of the pressing air bag 9 is connected with an underground part through an air conveying pipe 40, the underground part is embedded on a road surface, and the pressing air bag is jacked up and the limiting shaft sleeve is pressed towards the metal radiating fin through extruding the underground part.
The ground embedded part comprises a ground embedded box 15, a sealing air bag 13 is arranged in the ground embedded box 15, a metal base plate 21 is arranged at the top of the sealing air bag 13, when the ground embedded part is in a natural state, the metal base plate 21 is flush with the upper end face of the ground embedded box 15, air in the sealing air bag 13 is extruded and enters a top pressure air bag 9 by extruding the sealing air bag 13, as shown in figure 1, when an automobile passes through, the automobile can be extruded on the metal base plate 21, so that the metal base plate 21 presses the sealing air bag downwards, further, the air in the sealing air bag is extruded and enters the air storage bag, so that the air storage bag is jacked up, further, each connecting rod is jacked up, after the connecting rod is jacked up, the limiting shaft sleeve is jacked and extruded towards each metal radiating fin, further, each metal radiating fin; after the vehicle leaves, the sealed gasbag resumes deformation, and then makes the roof pressure gasbag retract, and spacing axle sleeve slides to the bottommost of guide arm, and then each metal fin outwards slowly roll-off under the dead weight, because the metal fin has absorbed inside heat, after roll-off to external world, can realize dispelling the heat fast to this circulation realizes sealed radiating mode, has promoted the radiating efficiency.
As shown in fig. 3, the metal heat sink includes more than one first metal heat sink 7 and one second metal heat sink 71, the second metal heat sink 71 is disposed on the top of each first metal heat sink 7, a support sleeve 2 is disposed at the bottom of the second metal heat sink 71, the second metal heat sink 71 is always located in the movable cavity 4 through the support sleeve 2 and seals the bottom opening end of the movable cavity, when the limiting shaft sleeve at the bottom is not in contact with the metal heat sink, each metal heat sink slides downward, and the second metal heat sink is always located inside the movable cavity under the action of the support sleeve, as shown in fig. 2.
Wherein, the gas storage bag 72 adopts a flexible rubber bag, the embedding is provided with the heat conduction needle (not shown) more than one on the flexible rubber bag top surface, owing to set up the heat conduction needle, the air in the flexible rubber bag can carry out the heat transfer in real time, and because metal fin and the contact of activity intracavity wall face are sealed, during outside roll-off, can inhale the activity intracavity with the air in the flexible rubber bag, when each metal fin pushed in again, the gas storage bag resumes deformation, in pushing in the gas storage bag with the air again.
The metal radiating fin is circular, the inner section of the movable cavity is circular, the outer wall surface of the metal radiating fin is wrapped with a layer of silica gel film layer and used for increasing friction force between the outer wall surface of the movable cavity and the inner wall of the movable cavity, so that the metal radiating fin slowly slides along the guide rod, the metal radiating fin slowly slides outwards under the friction force, heat is slowly taken out to the outside, and heat exchange is achieved.
In this embodiment, the pressing air bag 9 is compressed in a natural state, and is pressed up by injecting gas, and the sealing air bag inside the underground box is made of an elastic rubber material with deformation recovery capability.
The invention has the beneficial effects that: the metal radiating fins can be butted with external air, so that an internal and external heat exchange mode is realized, the radiating efficiency is improved, meanwhile, the sealing performance can be ensured, and the service life of the lamp is prolonged.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a high heat dissipation canned type LED street lamp which characterized in that: the street lamp comprises a street lamp pole, wherein a guide rod is arranged at the top of the street lamp pole, a lamp box is fixedly sleeved on the guide rod, an electric appliance cavity is arranged in the lamp box, a power panel is arranged in the electric appliance cavity, a light-emitting component is arranged outside the lamp box, an air storage bag is arranged at the top of the lamp box and is communicated with a movable cavity in the lamp box through an air duct, the top of the guide rod is inserted into the movable cavity and is fixed, more than one metal radiating fin is movably arranged outside the guide rod, the electric appliance cavity is communicated with the movable cavity through more than one air guide hole, a limiting shaft sleeve is arranged outside the lamp box and is slidably arranged on the guide rod, more than one connecting rod is arranged at the bottom of the limiting shaft sleeve, the connecting rod penetrates through the street lamp pole and extends into a hollow cavity in the street lamp pole, the extending end of the connecting rod is connected with a connecting plate, a jacking air bag, the bottom of the jacking air bag is connected with an underground part through an air conveying pipe, the underground part is embedded on a road surface, and the jacking air bag is jacked up and the limiting shaft sleeve is compressed towards the metal radiating fin through extruding the underground part.
2. The high heat dissipation canned type LED street lamp according to claim 1, wherein: the buried part comprises a buried box, a sealing air bag is arranged in the buried box, a metal base plate is arranged at the top of the sealing air bag, and in a natural state, the metal base plate is flush with the upper end face of the buried box, and gas in the sealing air bag is extruded into the top pressure air bag by extruding the sealing air bag.
3. The high heat dissipation canned type LED street lamp according to claim 1, wherein: the metal radiating fins comprise more than one first metal radiating fin and one second metal radiating fin, the second metal radiating fins are arranged at the tops of the first metal radiating fins, a supporting sleeve is arranged at the bottom of each second metal radiating fin, and the second metal radiating fins are always located in the movable cavity through the supporting sleeve and seal the bottom opening end of the movable cavity.
4. The high heat dissipation canned type LED street lamp according to claim 1, wherein: the air storage bag adopts a flexible rubber bag, and more than one heat conduction needle is embedded in the top surface of the flexible rubber bag.
5. The high heat dissipation canned type LED street lamp according to claim 1, wherein: the metal radiating fin is circular, the cross section of the inner part of the movable cavity is circular, and the outer wall surface of the metal radiating fin is wrapped with a layer of silica gel film layer for increasing the friction force between the metal radiating fin and the inner wall of the movable cavity, so that the metal radiating fin slowly slides along the guide rod.
6. The high heat dissipation canned type LED street lamp according to claim 1, wherein: the jacking air bag is compressed in a natural state, and is jacked up by injecting gas, and the sealing air bag in the underground box is made of elastic rubber materials with deformation recovery capability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636671.2A CN111720780B (en) | 2020-07-05 | 2020-07-05 | High heat dissipation canned type LED street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010636671.2A CN111720780B (en) | 2020-07-05 | 2020-07-05 | High heat dissipation canned type LED street lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111720780A true CN111720780A (en) | 2020-09-29 |
| CN111720780B CN111720780B (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010636671.2A Active CN111720780B (en) | 2020-07-05 | 2020-07-05 | High heat dissipation canned type LED street lamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN111720780B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217890A (en) * | 2021-03-16 | 2021-08-06 | 深圳中冶管廊科技发展有限公司 | Wisdom lamp pole |
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| CN1797751A (en) * | 2003-02-26 | 2006-07-05 | 日本电气株式会社 | Housing structure of electronic device and heat radiation method therefor |
| CN101545602A (en) * | 2008-03-28 | 2009-09-30 | 富士迈半导体精密工业（上海）有限公司 | Street lamp system |
| CN207584426U (en) * | 2017-12-20 | 2018-07-06 | 深圳市菲科科技有限公司 | A kind of high-heat-dispersion LED electric-torch burner |
| US20190300171A1 (en) * | 2016-07-29 | 2019-10-03 | Sharp Kabushiki Kaisha | Moving body |
| CN110594663A (en) * | 2019-09-02 | 2019-12-20 | 何贤彬 | City automatically cleaning LED street lamp |
| CN210868417U (en) * | 2019-10-16 | 2020-06-26 | 广东电网有限责任公司 | Electric energy metering box with fire prevention heat dissipation function |
-
2020
- 2020-07-05 CN CN202010636671.2A patent/CN111720780B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1797751A (en) * | 2003-02-26 | 2006-07-05 | 日本电气株式会社 | Housing structure of electronic device and heat radiation method therefor |
| CN101545602A (en) * | 2008-03-28 | 2009-09-30 | 富士迈半导体精密工业（上海）有限公司 | Street lamp system |
| US20190300171A1 (en) * | 2016-07-29 | 2019-10-03 | Sharp Kabushiki Kaisha | Moving body |
| CN207584426U (en) * | 2017-12-20 | 2018-07-06 | 深圳市菲科科技有限公司 | A kind of high-heat-dispersion LED electric-torch burner |
| CN110594663A (en) * | 2019-09-02 | 2019-12-20 | 何贤彬 | City automatically cleaning LED street lamp |
| CN210868417U (en) * | 2019-10-16 | 2020-06-26 | 广东电网有限责任公司 | Electric energy metering box with fire prevention heat dissipation function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217890A (en) * | 2021-03-16 | 2021-08-06 | 深圳中冶管廊科技发展有限公司 | Wisdom lamp pole |
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| Publication number | Publication date |
|---|---|
| CN111720780B (en) | 2021-12-07 |
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Effective date of registration: 20211119 Address after: 277000 317, floor 3, No. G900, Rundong Industrial Park, Guangming Avenue, high tech Zone, Zaozhuang City, Shandong Province Applicant after: Shandong Jiudingshan Photoelectric Technology Co.,Ltd. Address before: Room 806, unit 3, building 24, Lijiang Peninsula, Jiaxing, Zhejiang 314001 Applicant before: Wu Yanting |
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