CN110748822B - Protection prompt device of high altitude LED show light - Google Patents
Protection prompt device of high altitude LED show light Download PDFInfo
- Publication number
- CN110748822B CN110748822B CN201911161069.1A CN201911161069A CN110748822B CN 110748822 B CN110748822 B CN 110748822B CN 201911161069 A CN201911161069 A CN 201911161069A CN 110748822 B CN110748822 B CN 110748822B
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- Prior art keywords
- water
- protection device
- circuit
- shell
- lamp
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- 239000002184 metal Substances 0.000 claims abstract description 66
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000292 calcium oxide Substances 0.000 claims abstract description 10
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 9
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 21
- 239000001569 carbon dioxide Substances 0.000 abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 11
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract description 2
- 229920002050 silicone resin Polymers 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
-
- 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
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
-
- 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
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
-
- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
- F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
-
- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/12—Flameproof or explosion-proof arrangements
-
- 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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
-
- 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
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention relates to the technical field of LED lamps and discloses a protection prompting device of an overhead LED display lamp, which comprises a shell, wherein the inner wall of the shell is connected with water-absorbing silicone, an upper prompting lamp is arranged right below the water-absorbing silicone, a circuit-breaking protection device is arranged right below the upper prompting lamp, a carbonic acid solution is arranged on the left side of the circuit-breaking protection device, a quicklime layer is arranged inside the circuit-breaking protection device, a sliding block is arranged on the right side of the quicklime layer, and a connecting rod is connected with a metal sheet. Carbon dioxide and water are generated by electrolysis through the carbonic acid solution in the circuit breaking protection device, the carbon dioxide is discharged to the inside of casing through first gas pocket, second gas pocket and third gas pocket, prevents that the LED lamp from generating heat and burning, and carbon dioxide gas passes through the slider and promotes the connecting rod for metal ball on the connecting rod breaks away from the sheetmetal, thereby breaks off the main circuit of LED lamp, and this structure protects the circuit when the casing is intake, thereby prevents that the circuit from being burnt.
Description
Technical Field
The invention relates to the technical field of LED lamps, in particular to a protection prompting device of an overhead LED display lamp.
Background
An LED lamp is a solid-state semiconductor device that converts electrical energy into visible light, and it can directly convert electricity into light. The heart of an LED is a semiconductor wafer, which consists of two parts, one part is a P-type semiconductor, in which holes dominate, and the other part is an N-type semiconductor, where electrons are mainly present, and when current is applied to the wafer through a wire, the electrons are pushed to the P-region, where they recombine with the holes and then emit energy in the form of photons, which is the principle of LED light emission. The wavelength of the light, i.e., the color of the light, is determined by the material forming the P-N junction.
The LED display lamp in the air at present is not distinguished from LED lamps used in other places, but the high-altitude display lamp body is large, maintenance needs to be carried out at high altitude, the LED display lamp is generally damaged because colloid cracks and water enters due to long-time weathering, the water inlet position needs to be detected in high-altitude maintenance, and operation is not easy.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a protection prompting device of an overhead LED display lamp, which has the advantages of water inlet protection and water leakage position prompting and solves the problems that the existing LED display lamp does not have water inlet protection and the water leakage position is not easy to find.
(II) technical scheme
In order to achieve the purposes of water inlet protection and water leakage position prompt, the invention provides the following technical scheme: the utility model provides a protection suggestion device of high altitude LED show light, which comprises a housin, shells inner wall fixedly connected with water-absorbing silicone, be provided with the warning light under water-absorbing silicone and on the casing, water-absorbing silicone about the inboard just be provided with about the casing warning light, on be provided with the protection device that opens circuit under the warning light and on the casing, be provided with the LED display lamp under the protection device that opens circuit just on the casing, the inside left side of protection device that opens circuit is provided with carbonic acid solution, the inside of protection device that opens circuit just is provided with the lime layer on the right side of carbonic acid solution, the inside of protection device that opens circuit just is provided with the slider on the right side on lime layer, the right-hand member fixedly connected with connecting rod of slider, just there is the sheetmetal under the connecting rod in protection device that opens circuit sliding connection, be provided with electric capacity on the casing.
Preferably, the lower end of the shell is provided with a radiating hole, and the radiating hole plays a role in radiating the LED lamp.
Preferably, the outer surface and the inner surface of the upper end of the water-absorbing silicone resin are fixedly connected with an upper metal wire and a lower metal wire respectively, the outer side of the left end face and the outer side of the right end face of the water-absorbing silicone resin are fixedly connected with a left outer metal wire and a right outer metal wire, and the inner side of the left end face and the inner side of the right end face of the water-absorbing silicone resin are fixedly connected with a left inner metal wire and a right inner metal wire.
Preferably, the left and right indicator lights comprise a left indicator light and a right indicator light respectively.
Preferably, the disconnection protection device includes a wire, a first air hole, a second air hole, a third air hole, and a rectangular groove, respectively.
Preferably, the carbonic acid solution is higher than the wire and lower than the first air hole, so as to avoid the problems that the carbonic acid solution cannot be electrolyzed and the carbonic acid solution overflows too high.
Preferably, the lower end of the connecting rod is fixedly connected with a metal ball.
Preferably, the capacitor provides power to the upper indicator light and the left and right indicator lights and is connected in series with the lead.
(III) advantageous effects
Compared with the prior art, the invention provides a protection prompting device of an overhead LED display lamp, which has the following beneficial effects:
1. this protection suggestion device of high altitude LED show light is provided with metal wire, lower metal wire, about outside metal wire and about the inboard metal wire respectively in each face through in the silicon resin that absorbs water, goes up the metal wire and corresponds the warning light with lower metal wire, about outside metal wire and about inboard metal wire correspond about the warning light, and this structure can reach and instruct the position of leaking the surface of water to make things convenient for the maintenance personal to maintain.
2. This protection suggestion device of high altitude LED show lamp, through the protection device that opens circuit through last metal wire, lower metal wire, control the outside metal wire and control the arbitrary circuit of inboard metal wire and be put through, carbonic acid solution in the protection device that opens circuit is by electrolysis generation carbon dioxide and water, water is absorbed by quick lime layer, and carbon dioxide passes through first gas pocket, the inside of casing is discharged to second gas pocket and third gas pocket, and then prevent the burning that generates heat of LED lamp, before carbon dioxide discharges, carbon dioxide gas passes through slider promotion connecting rod, make the metal ball on the connecting rod break away from the sheetmetal, thereby the main circuit of LED lamp breaks off, this structure has reached the protection to internal circuit when the casing intakes, thereby prevent that the circuit from being burnt.
Drawings
FIG. 1 is a sectional view of the overall front structure of the present invention;
FIG. 2 is a front sectional view of a water-absorbent silicone resin according to the present invention;
FIG. 3 is a cross-sectional view of the structure of FIG. 2 taken along line A-A thereof in accordance with the present invention;
FIG. 4 is a front cross-sectional view of the internal structure of the circuit interrupting protection device of the present invention;
FIG. 5 is a schematic diagram of the circuit relationship of the present invention.
In the figure: the solar cell comprises a shell 1, heat dissipation holes 101, water-absorbing silicone 2, an upper metal wire 201, a lower metal wire 202, a left outer metal wire 203, a right outer metal wire 204, a left inner metal wire 204, an upper warning light 3, a left warning light 4, a right warning light 401, a right warning light 402, a 5-way circuit protection device, a 501 lead wire, a first air hole 502, a second air hole 503, a third air hole 504, a rectangular groove 505, a 6-LED display lamp, 7-carbonic acid solution, 8-quicklime layer, a 9-sliding block, 10-connecting rod, 1001 metal ball, 11 metal sheet and 12 capacitor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Please refer to fig. 1-5, a protection prompting device for a high-altitude LED display lamp, which comprises a housing 1, a heat dissipation hole 101 is formed at the lower end of the housing 1, the heat dissipation hole 101 plays a role of heat dissipation for the LED lamp, a water-absorbing silicone resin 2 is fixedly connected to the inner wall of the housing 1, an upper outer surface and an inner surface of the water-absorbing silicone resin 2 are respectively fixedly connected with an upper metal wire 201 and a lower metal wire 202, a left outer metal wire 203 and a right outer metal wire 203 are fixedly connected to the outer side of the left end face and the outer side of the right end face of the water-absorbing silicone resin 2, and a left inner metal wire 204 and a right inner metal wire 204 are fixedly connected to the inner side of the left end face and the inner side of the right end face of the water-absorbing silicone resin 2, which can be judged by the structure to have water leakage, thereby facilitating and rapid maintenance. Prompting lamps 3 are arranged right below the water-absorbing silicon resin 2 and on the shell 1, left and right prompting lamps 4 are arranged on the left and right inner sides of the water-absorbing silicon resin 2 and on the shell 1, and the left and right prompting lamps 4 respectively comprise a left prompting lamp 401 and a right prompting lamp 402. A circuit breaking protection device 5 is arranged on the casing 1 right below the upper indicator light 3, and the circuit breaking protection device 5 comprises a lead 501, a first air hole 502, a second air hole 503, a third air hole 504 and a rectangular groove 505 respectively.
An LED display lamp 6 is arranged right below the circuit breaking protection device 5 and on the shell 1, a carbonic acid solution 7 is arranged on the left side inside the circuit breaking protection device 5, and the carbonic acid solution 7 is higher than the conducting wire 501 and lower than the first air hole 502, so that the problems that the carbonic acid solution 7 cannot be electrolyzed and the carbonic acid solution 7 is too high to overflow are solved. The inside of protection device 5 that opens circuit just is provided with quick lime layer 8 on the right side of carbonic acid solution 7, and the inside of protection device 5 that opens circuit just is provided with slider 9 on quick lime layer 8's right side, and the right-hand member fixedly connected with connecting rod 10 of slider 9, the lower extreme fixedly connected with metal ball 1001 of connecting rod 10. Under connecting rod 10 and at protection device 5 sliding connection that opens circuit have sheetmetal 11, be provided with electric capacity 12 on casing 1, electric capacity 12 to last warning light 3 and left and right warning light 4 provide electric power and establish ties with wire 501.
The working principle is as follows: when the protection prompting device of the high-altitude LED display lamp works, when water enters the shell 1, water at a water inlet position can be diffused in the water-absorbing silicon resin 2, each surface of the water-absorbing silicon resin 2 is respectively provided with an upper metal wire 201, a lower metal wire 202, a left outer side metal wire 203, a right outer side metal wire 203, a left inner side metal wire 204, a right inner side metal wire 204, an upper metal wire 201 and a lower metal wire 202 correspond to the upper prompting lamps 3, the left outer side metal wire 203, the right outer side metal wire 203, the left inner side metal wire 204, the right inner side metal wire 204 correspond to the left prompting lamps 4, the structure can reach the position of a water leakage surface to indicate, so that maintenance personnel can conveniently maintain, meanwhile, the circuit breaking protection device 5 is connected through any circuit of the upper metal wire 201, the lower metal wire 202, the left outer side metal wire 203, the right inner side metal wire 204 and the left inner side metal wire 204, the right inner side metal wire 204, the carbonic acid solution 7 in the circuit breaking protection device 5 is electrolyzed to generate carbon dioxide and water, the water is absorbed by the quicklime layer 8, and the carbon dioxide passes through the first air hole 502, The second air hole 503 and the third air hole 504 are discharged to the inside of the housing 1, thereby preventing the LED lamp from burning due to heat, before the carbon dioxide is discharged, the carbon dioxide gas pushes the connecting rod 10 through the slider 9, so that the metal ball 1001 on the connecting rod 10 is separated from the metal sheet 11, thereby disconnecting the main circuit of the LED lamp, and this structure achieves the protection of the internal circuit when the housing 1 is filled with water, thereby preventing the LED lamp from being burnt. It should be noted that the capacitor 12 is connected in parallel with the main circuit of the LED lamp, the capacitor 12 is equivalent to an open circuit state when the LED lamp normally operates, and the capacitor 12 supplies power to the corresponding warning lamp only when the upper metal wire 201, the lower metal wire 202, the left and right outer metal wires 203, and the left and right inner metal wires 204 are connected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a protection suggestion device of high altitude LED show lamp, includes casing (1), its characterized in that: the inner wall of the shell (1) is fixedly connected with water-absorbing silicon resin (2), a top indicator light (3) is arranged right below the water-absorbing silicon resin (2) and on the shell (1), a left indicator light (4) and a right indicator light (4) are arranged right below the water-absorbing silicon resin (2) and on the shell (1), a circuit breaking protection device (5) is arranged right below the top indicator light (3) and on the shell (1), an LED display lamp (6) is arranged right below the circuit breaking protection device (5) and on the shell (1), a carbonic acid solution (7) is arranged on the left side of the interior of the circuit breaking protection device (5), a quicklime layer (8) is arranged inside the circuit breaking protection device (5) and on the right side of the quicklime layer (8), a slide block (9) is arranged inside the circuit breaking protection device (5) and on the right side of the quicklime layer (8), and a connecting rod (10) is fixedly connected with the right end of the slide block (9), a metal sheet (11) is connected to the circuit breaking protection device (5) in a sliding manner under the connecting rod (10), and a capacitor (12) is arranged on the shell (1);
the outer surface and the inner surface of the upper end of the water-absorbing silicone (2) are respectively fixedly connected with an upper metal wire (201) and a lower metal wire (202), the outer sides of the left end face and the right end face of the water-absorbing silicone (2) are fixedly connected with left and right outer metal wires (203), and the inner sides of the left end face and the right end face of the water-absorbing silicone (2) are fixedly connected with left and right inner metal wires (204);
the open circuit protection device (5) comprises a lead (501), a first air hole (502), a second air hole (503), a third air hole (504) and a rectangular groove (505) respectively;
the carbonic acid solution (7) is higher than the conducting wire (501) and lower than the first air hole (502);
the lower end of the connecting rod (10) is fixedly connected with a metal ball (1001);
the capacitor (12) provides power for the upper indicator light (3) and the left and right indicator lights (4) and is connected with the lead (501) in series.
2. The protection and prompt device of the high-altitude LED display lamp as claimed in claim 1, wherein: the lower end of the shell (1) is provided with a heat dissipation hole (101).
3. The protection and prompt device of the high-altitude LED display lamp as claimed in claim 1, wherein: the left and right prompting lamps (4) respectively comprise a left prompting lamp (401) and a right prompting lamp (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161069.1A CN110748822B (en) | 2019-11-24 | 2019-11-24 | Protection prompt device of high altitude LED show light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911161069.1A CN110748822B (en) | 2019-11-24 | 2019-11-24 | Protection prompt device of high altitude LED show light |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110748822A CN110748822A (en) | 2020-02-04 |
| CN110748822B true CN110748822B (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911161069.1A Expired - Fee Related CN110748822B (en) | 2019-11-24 | 2019-11-24 | Protection prompt device of high altitude LED show light |
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| CN (1) | CN110748822B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101384786B1 (en) * | 2012-07-09 | 2014-04-14 | 광명전기 주식회사 | LED module |
| CN207651679U (en) * | 2017-12-05 | 2018-07-24 | 刘伟成 | A kind of cable connector water-tight device |
| CN109357229A (en) * | 2018-10-30 | 2019-02-19 | 深圳智慧前线科技有限公司 | A kind of vertical LED flower garden lamp of water proof type |
| CN208832281U (en) * | 2018-11-16 | 2019-05-07 | 广州慧营智能科技有限公司 | A kind of LED flat lamp being easily installed |
| CN109392550A (en) * | 2018-12-19 | 2019-03-01 | 大连田祖生态农业科技发展有限公司 | A kind of lighting system for ecological agriculture vegetable cultivation |
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| CN110748822A (en) | 2020-02-04 |
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Effective date of registration: 20211115 Address after: 250000 Keyuan street, economic development zone, Shanghe County, Jinan City, Shandong Province Applicant after: Jinan Huacheng Hengxin energy saving and Environmental Protection Technology Co.,Ltd. Address before: 312000 Dong Pu Zhen Shao Jia An Cun, Yuecheng District, Shaoxing City, Zhejiang Province Applicant before: Shao Jiayan |
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