CN208997892U - A kind of band launches the street lamp of LED advertisement screen - Google Patents
A kind of band launches the street lamp of LED advertisement screen Download PDFInfo
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- CN208997892U CN208997892U CN201821442998.0U CN201821442998U CN208997892U CN 208997892 U CN208997892 U CN 208997892U CN 201821442998 U CN201821442998 U CN 201821442998U CN 208997892 U CN208997892 U CN 208997892U
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- advertisement screen
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- support column
- led advertisement
- magnet
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Abstract
The utility model discloses the street lamps that a kind of band launches LED advertisement screen, including support column, U-shaped support rod, stabilizing mechanism and rotating mechanism, the rotating mechanism rotation is socketed in the center outer end of support column, the U-shaped support rod passes through the top both ends that adapter sleeve is fixedly mounted on support column, the outside lower end of the U-shaped support rod is fixedly installed with LED street lamp, the stabilizing mechanism is fixedly mounted on the center upper and lower ends of support column, the outboard end of the adjacent stable mechanism is fixedly installed with fixed frame, the lumen centers position of the fixed frame is fixedly installed with LED advertisement screen.The utility model by setting LED advertisement screen, fixed frame, stabilizing mechanism and rotating mechanism, solve the problems, such as LED advertisement screen can not resist high wind defect and LED advertisement screen mounting means it is excessively single.
Description
Technical field
The utility model relates to LED technology field, specially a kind of band launches the street lamp of LED advertisement screen.
Background technique
Advertisement screen refers to the outdoor media of all transmitting advertising informations.Depending on size of media presses actual environment, shop is recruited, door
Head, the picture of alien invasion can make by manual drawing, computer photograph or in a manner of printing on paper.The material of advertisement screen is generally all
It is to be welded with square tube, angle steel etc..With the continuous development of society with progress, LED material can all be selected to make now, one
As appear in the places such as night shop, hospital, wineshop, public place, LED advertisement screen can also combine with LED street lamp, LED
Street lamp can play illumination, beautiful, the effect of road sign, and LED advertisement screen can show the new look in city, LED advertisement screen gained
Benefit can be used for daily maintenance LED street lamp, self-sufficient, energy-saving and environment-friendly theory is very popular.
But there are deficiencies below for existing technology:
1, there are LED advertisement screens is fixed on support rod by the way of welding, and mounting means is not convenient enough, makes for a long time
With easy-to-rust, there are insecurity factors；
2, there are LED advertisement screens often will appear the advertisement ruined under high wind weather without the ability for resisting high wind
Screen accidentally injures the case where pedestrian, vehicle.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of street lamp of band dispensing LED advertisement screen, solves
LED advertisement screen can not resist the defect of high wind and the problem that LED advertisement screen mounting means is excessively single.
(2) technical solution
To achieve the above object, the utility model provides the following technical solutions: a kind of band launches the street lamp of LED advertisement screen,
Including support column, U-shaped support rod, stabilizing mechanism and rotating mechanism, the rotating mechanism rotation is socketed in outside the center of support column
End, the U-shaped support rod pass through the top both ends that adapter sleeve is fixedly mounted on support column, under the outside of the U-shaped support rod
End is fixedly installed with LED street lamp, and the stabilizing mechanism is fixedly mounted on the center upper and lower ends of support column, the adjacent stable
The outboard end of mechanism is fixedly installed with fixed frame, and the lumen centers position of the fixed frame is fixedly installed with LED advertisement screen.
Preferably, the rotating mechanism include the first placing groove, the first steel ball, the second placing groove, fixed disc, turntable and
Second steel ball, the turntable are fixedly mounted on the center of rotating mechanism, and first placing groove is provided with the upper of turntable
Lower center outer end, second steel ball are uniformly placed in the inner cavity of the first placing groove, and the fixed disc is rotatably installed in turntable
Upper and lower side center, second placing groove is provided with the center outer end of fixed disc, and first steel ball is uniformly put
In the inner cavity of the second placing groove.
Preferably, the stabilizing mechanism is fixed including the first card slot, spiral bolt, the first fixing sleeve, the first magnet, second
Set, the second magnet and the second card slot, first fixing sleeve are fixedly mounted on the two side ends of stabilizing mechanism, first card slot
It is provided with the upper end center position of the first fixing sleeve, the equal spiral of spiral bolt is mounted on the front and rear sides end of the first fixing sleeve,
The fixed inner end center for being fastened on the first card slot of first magnet, second fixing sleeve are placed in the first fixing sleeve
Side, second card slot are provided with the upper end center position of the second fixing sleeve, and the second magnet fixation is fastened on the second card
The inner end center of slot.
Preferably, the fixed disc is fixedly attached to the outboard end of support column, and the outboard end of the turntable is fixedly connected
In the side center of fixed frame, the turntable is socketed in the center of support column, and the turntable is turned by the second steel ball
The dynamic center for being mounted on adjacent fixed disc.
Preferably, first fixing sleeve is fixedly mounted on the outside both ends of support column by spiral bolt, and described second is solid
Surely the outboard end covered is fixedly connected with the two side ends up and down in fixed frame, and first magnet is connect with the second magnet magnetism, institute
The first magnet and the second magnet are stated as anisotropic magnet.
Preferably, the inner end of the fixed frame offers card slot, and the LED advertisement screen is fixedly mounted on by card slot
Determine the lumen centers position of frame, the rotating mechanism is socketed in the center outer end of support column, the stable machine by turntable rotation
Structure passes through the center upper and lower ends that the first fixing sleeve is fixedly mounted on support column, the model KW-LA30W of the LED street lamp,
The LED street lamp and extraneous power supply are electrically connected, the model JYD-02 of the LED advertisement screen, the LED advertisement screen and the external world
Power supply is electrically connected.
Three beneficial effects
The utility model provides the street lamp that a kind of band launches LED advertisement screen, have it is following the utility model has the advantages that
(1) the utility model makes the utility model be provided with spirit by setting LED advertisement screen, fixed frame and rotating mechanism
Living installation, quick detachable function avoid for a long time using LED advertisement screen, caused by LED advertisement screen and support rod junction become rusty
The case where erosion, uses easy-to-rust, there are uneasinesses so that effective solution LED advertisement screen mounting means is not convenient enough for a long time
The problem of total factor, has given one support force of adapter sleeve, when needing to install and use, user by installing U-shaped support rod
By the way that fixed disc to be fixedly attached to the outboard end of support column then turntable can be placed on to the upper end center of fixed disc
Position can be used to place the first steel ball of storage and the second steel ball, can be borrowed by the first placing groove of installation and the second placing groove
Help the rollability of the first steel ball and the second steel ball, thus realize turntable can between adjacent fixed disc around support column from
By rotating, it can use spiral bolt screw-tightened by installation spiral bolt and the first fixing sleeve, user, the first fixing sleeve consolidated
Dingan County is mounted in the outside both ends of support column, by installing the first card slot, can be used for engaging and places the first magnet, so that the first magnetic
Iron position is fixed, and by installing the second fixing sleeve, user can use spiral bolt and the second fixing sleeve is fixedly mounted on fixation
The side up and down of frame can be used for placing the second magnet, so that the position of the second magnet is relatively solid by installing the second card slot
Calmly, the inner end center of fixed frame is fixedly mounted on by spiral bolt due to the outboard end of turntable, so that fixed frame
It can be freely rotated under the drive of turntable around support column, user can use the card slot that fixed frame inner end opens up, will
LED advertisement screen is fixedly mounted on the cavity position of fixed frame.
(2) the utility model is provided with the utility model and resists high wind by setting stabilizing mechanism and rotating mechanism
The case where function avoids under high wind weather, and the advertisement screen that ruins accidentally injures pedestrian, vehicle, so that effective solution LED is wide
The problem of screen can not resist high wind is accused, if when encountering calm or wind, since the first magnet and the second magnet are anisotropic magnetic
Body can make LED advertisement screen and fixed frame stablize by turntable using the first magnet and the second magnet characteristic that there is a natural attraction between the sexes
It is maintained at the upper end position of fixed disc, in the case where encountering high wind weather, when wind-force is greater than the attraction of the first magnet and the second magnet
When power, then LED advertisement screen will utilize the rollability of the first steel ball and the second steel ball, so that LED advertisement by driving turntable
Screen can follow turntable to carry out half cycle rotation around support column, to ensure that high wind will not directly lasting to wreck LED wide
Accuse screen.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is that the utility model rotating mechanism splits schematic diagram；
Fig. 3 is that the utility model stabilizing mechanism splits schematic diagram.
In figure: 1, support column；2, LED advertisement screen；3, fixed frame；4, LED street lamp；5, adapter sleeve；6, U-shaped support rod；7,
Stabilizing mechanism；8, rotating mechanism；9, the first placing groove；10, the first steel ball；11, the second placing groove；12, fixed disc；13, turn
Disk；14, the second steel ball；15, the first card slot；16, spiral bolt；17, the first fixing sleeve；18, the first magnet；19, the second fixing sleeve；
20, the second magnet；21, the second card slot.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, the utility model provides a kind of technical solution: a kind of band launches the street lamp of LED advertisement screen, including
Support column 1, U-shaped support rod 6, stabilizing mechanism 7 and rotating mechanism 8, rotating mechanism 8 rotate the center outer end for being socketed in support column 1,
Rotating mechanism 8 includes the first placing groove 9, the first steel ball 10, the second placing groove 11, fixed disc 12, turntable 13 and the second steel ball
14, turntable 13 is fixedly mounted on the center of rotating mechanism 8, and the first placing groove 9 is provided with outside the center up and down of turntable 13
End, the second steel ball 14 are uniformly placed in the inner cavity of the first placing groove 9, and fixed disc 12 is rotatably installed in the upper and lower side of turntable 13
Heart position, the second placing groove 11 are provided with the center outer end of fixed disc 12, and the first steel ball 10 is uniformly placed in the second placing groove
11 inner cavity, U-shaped support rod 6 are fixedly mounted on the top both ends of support column 1, the outside of U-shaped support rod 6 by adapter sleeve 5
Lower end is fixedly installed with LED street lamp 4, and the model KW-LA30W of LED street lamp 4 belongs to the prior art, LED street lamp 4 and external world's electricity
Source is electrically connected, and stabilizing mechanism 7 is fixedly mounted on the center upper and lower ends of support column 1, and stabilizing mechanism 7 includes the first card slot
15, spiral bolt 16, the first fixing sleeve 17, the first magnet 18, the second fixing sleeve 19, the second magnet 20 and the second card slot 21, first
Fixing sleeve 17 is fixedly mounted on the two side ends of stabilizing mechanism 7, and the first card slot 15 is provided with the upper end center of the first fixing sleeve 17
Position, the equal spiral of spiral bolt 16 are mounted on the front and rear sides end of the first fixing sleeve 17, and the fixation of the first magnet 18 is fastened on the first card
The inner end center of slot 15, the second fixing sleeve 19 are placed in the side of the first fixing sleeve 17, and the second card slot 21 is provided with second
The upper end center position of fixing sleeve 19, the fixed inner end center for being fastened on the second card slot 21 of the second magnet 20, the first magnet
18 connect with 20 magnetism of the second magnet, and the first magnet 18 and the second magnet 20 are anisotropic magnet, the outboard end of adjacent stable mechanism 7
It is fixedly installed with fixed frame 3, fixed disc 12 is fixedly attached to the outboard end of support column 1, and the outboard end of turntable 13 is fixedly connected
In the side center of fixed frame 3, turntable 13 is socketed in the center of support column 1, and turntable 13 passes through 14 turns of the second steel ball
The dynamic center for being mounted on adjacent fixed disc 12, the first fixing sleeve 17 are fixedly mounted on support column 1 by spiral bolt 16
Outside both ends, the outboard end of the second fixing sleeve 19 are fixedly connected with the two side ends up and down in fixed frame 3, by installing U-shaped support
Bar 6 has given 5 one support forces of adapter sleeve, and when needing to install and use, user can be by by 12 fixing sleeve of fixed disc
The outboard end in support column 1 is connect, then turntable 13 is placed on to the upper end center position of fixed disc 12, is put by installation first
Slot 9 and the second placing groove 11 are set, can be used to place the first steel ball 10 of storage and the second steel ball 14, it can be by means of the first steel ball
10 and second steel ball 14 rollability, thus realize turntable 13 can between adjacent fixed disc 12 around support column 1 freely
Rotation can use 16 screw-tightened of spiral bolt by installation spiral bolt 16 and the first fixing sleeve 17, user, fixed by first
Set 17 is fixedly mounted on the outside both ends of support column 1, by installing the first card slot 15, can be used for engaging and places the first magnet
18, so that 18 position of the first magnet is fixed, by installing the second fixing sleeve 19, it is fixed by second that user can use spiral bolt
Set 19 is fixedly mounted on the side up and down of fixed frame 3, by installing the second card slot 21, can be used for placing the second magnet 20, makes
The position for obtaining the second magnet 20 is relatively fixed, since the outboard end of turntable 13 is fixedly mounted in fixed frame 3 by spiral bolt
Side center keeps this practical so that fixed frame 3 can be freely rotated under the drive of turntable 13 around support column 1
It is novel to be provided with flexibly installation, quick detachable function, avoid for a long time using LED advertisement screen, caused by LED advertisement screen and branch
The case where strut junction is corroded, so that effective solution LED advertisement screen mounting means is not convenient enough, for a long time using easily rust
, there is insecurity factor in erosion, the lumen centers position of fixed frame 3 is fixedly installed with LED advertisement screen 2, and user can be with
LED advertisement screen 2, is fixedly mounted on the cavity position of fixed frame 3, LED advertisement screen by the card slot opened up using 3 inner end of fixed frame
2 model JYD-02 belongs to the prior art, and LED advertisement screen 2 and extraneous power supply are electrically connected, and the inner end of fixed frame 3 opens up
There is card slot, LED advertisement screen 2 is fixedly mounted on the lumen centers position of fixed frame 3 by card slot, and rotating mechanism 8 passes through turntable 13
Rotation is socketed in the center outer end of support column 1, and stabilizing mechanism 7 is fixedly mounted in support column 1 by the first fixing sleeve 17
Heart upper and lower ends, if, since the first magnet 18 and the second magnet 20 are anisotropic magnet, utilizing the when encountering calm or wind
One magnet 18 and the second characteristic that there is a natural attraction between the sexes of magnet 20 can make LED advertisement screen 2 and fixed frame 3 stablize by turntable 13
It is maintained at the upper end position of fixed disc 12, in the case where encountering high wind weather, when wind-force is greater than the first magnet 18 and the second magnet 20
Attraction when, LED advertisement screen 2 will by drive turntable 13, then utilize the first steel ball 10 and the second steel ball 14 rolling
Property, allow LED advertisement screen 2 that turntable 13 is followed to carry out half cycle rotation around support column 1, to ensure that high wind will not be direct
It is lasting wreck LED advertisement screen 2, so that the utility model is provided with the function of resisting high wind, avoid under high wind weather, break
The advertisement screen that collapses accidentally injures the case where pedestrian, vehicle, so that the problem of effective solution LED advertisement screen can not resist high wind, leads to
It crosses and controls the normal of extraneous power supply realization LED advertisement screen 2 and LED street lamp 4 with LED advertisement screen 2 and the electric connection of LED street lamp 4
Work.
In use, the utility model has given 5 one support forces of adapter sleeve, has needed to pacify by installing U-shaped support rod 6
Dress is in use, then user can be placed turntable 13 by the way that fixed disc 12 to be fixedly attached to the outboard end of support column 1
In the upper end center position of fixed disc 12, by the first placing groove 9 of installation and the second placing groove 11, can be used to place storage
First steel ball 10 and the second steel ball 14, can be by means of the rollability of the first steel ball 10 and the second steel ball 14, to realize turntable
13 can be freely rotated between adjacent fixed disc 12 around support column 1, by installing spiral bolt 16 and the first fixing sleeve 17,
User can use 16 screw-tightened of spiral bolt, and the first fixing sleeve 17 is fixedly mounted on to the outside both ends of support column 1, is passed through
First card slot 15 is installed, can be used for engaging and place the first magnet 18, so that 18 position of the first magnet is fixed, passes through installation second
Fixing sleeve 19, user can use the side up and down that the second fixing sleeve 19 is fixedly mounted on fixed frame 3 by spiral bolt, pass through peace
The second card slot 21 is filled, can be used for placing the second magnet 20, so that the position of the second magnet 20 is relatively fixed, due to turntable 13
Outboard end is fixedly mounted on the inner end center of fixed frame 3 by spiral bolt, so that fixed frame 3 can be in turntable 13
Drive under be freely rotated around support column 1, user can use the card slot that 3 inner end of fixed frame opens up, by LED advertisement screen
2 are fixedly mounted on the cavity position of fixed frame 3, if when encountering calm or wind, due to the first magnet 18 and the second magnet
20 be anisotropic magnet, using the first magnet 18 and the second characteristic that there is a natural attraction between the sexes of magnet 20, can make LED advertisement screen 2 and consolidate
The upper end position that frame 3 is stably held in fixed disc 12 by turntable 13 is determined, in the case where encountering high wind weather, when wind-force is greater than first
When the attraction of magnet 18 and the second magnet 20, then LED advertisement screen 2 will utilize the first steel ball 10 by driving turntable 13
With the rollability of the second steel ball 14, allow LED advertisement screen 2 that turntable 13 is followed to carry out half cycle rotation around support column 1, thus
It ensure that high wind directly lasting will not wreck LED advertisement screen 2, electrically connected by control with LED advertisement screen 2 and LED street lamp 4
The extraneous power supply connect realizes the normal work of LED advertisement screen 2 and LED street lamp 4.
It can to sum up obtain, the utility model passes through setting LED advertisement screen 2, fixed frame 3, stabilizing mechanism 7 and rotating mechanism 8, solution
LED advertisement screen of having determined can not resist the defect of high wind and the problem that LED advertisement screen mounting means is excessively single.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of band launches the street lamp of LED advertisement screen, including support column (1), U-shaped support rod (6), stabilizing mechanism (7) and rotation
Mechanism (8), it is characterised in that: rotating mechanism (8) rotation is socketed in the center outer end of support column (1), the U-shaped support rod
(6) the top both ends of support column (1) are fixedly mounted on by adapter sleeve (5), the outside lower end of the U-shaped support rod (6) is solid
Dingan County is equipped with LED street lamp (4), and the stabilizing mechanism (7) is fixedly mounted on the center upper and lower ends of support column (1), the phase
The outboard end of adjacent stabilizing mechanism (7) is fixedly installed with fixed frame (3), and the lumen centers position of the fixed frame (3) is fixedly mounted
There are LED advertisement screen (2).
2. the street lamp that a kind of band according to claim 1 launches LED advertisement screen, it is characterised in that: the rotating mechanism (8)
Including the first placing groove (9), the first steel ball (10), the second placing groove (11), fixed disc (12), turntable (13) and the second steel ball
(14), the turntable (13) is fixedly mounted on the center of rotating mechanism (8), and first placing groove (9), which is provided with, to be turned
The center outer end up and down of disk (13), second steel ball (14) are uniformly placed in the inner cavity of the first placing groove (9), the fixed circle
Disk (12) is rotatably installed in the upper and lower side center of turntable (13), and second placing groove (11) is provided with fixed disc (12)
Center outer end, first steel ball (10) is uniformly placed in the inner cavities of the second placing groove (11).
3. the street lamp that a kind of band according to claim 2 launches LED advertisement screen, it is characterised in that: the stabilizing mechanism (7)
Including the first card slot (15), spiral bolt (16), the first fixing sleeve (17), the first magnet (18), the second fixing sleeve (19), the second magnetic
Iron (20) and the second card slot (21), first fixing sleeve (17) are fixedly mounted on the two side ends of stabilizing mechanism (7), and described
One card slot (15) is provided with the upper end center position of the first fixing sleeve (17), and it is solid that the spiral bolt (16) spiral is mounted on first
The front and rear sides end of fixed set (17), the fixed inner end center for being fastened on the first card slot (15) of first magnet (18), institute
The side that the second fixing sleeve (19) is placed in the first fixing sleeve (17) is stated, second card slot (21) is provided with the second fixing sleeve
(19) upper end center position, the fixed inner end center for being fastened on the second card slot (21) of second magnet (20).
4. the street lamp that a kind of band according to claim 2 launches LED advertisement screen, it is characterised in that: the fixed disc
(12) it is fixedly attached to the outboard end of support column (1), the outboard end of the turntable (13) is fixedly connected on the side of fixed frame (3)
Center, the turntable (13) are socketed in the center of support column (1), and the turntable (13) is turned by the second steel ball (14)
The dynamic center for being mounted on adjacent fixed disc (12).
5. the street lamp that a kind of band according to claim 3 launches LED advertisement screen, it is characterised in that: first fixing sleeve
(17) the outside both ends of support column (1) are fixedly mounted on by spiral bolt (16), the outboard end of second fixing sleeve (19) is equal
Be fixedly connected on the two side ends up and down of fixed frame (3), first magnet (18) with the second magnet (20) is magnetic connect, described the
One magnet (18) and the second magnet (20) are anisotropic magnet.
6. according to claim 1 or claim 2 or a kind of band as claimed in claim 3 launch the street lamp of LED advertisement screen, special
Sign is: the inner end of the fixed frame (3) offers card slot, and the LED advertisement screen (2) is fixedly mounted on fixation by card slot
The lumen centers position of frame (3), the rotating mechanism (8) are socketed in the center outer end of support column (1) by turntable (13) rotation,
The stabilizing mechanism (7) is fixedly mounted on the center upper and lower ends of support column (1), the LED by the first fixing sleeve (17)
The model KW-LA30W of street lamp (4), the LED street lamp (4) and extraneous power supply are electrically connected, the type of the LED advertisement screen (2)
It number is JYD-02, the LED advertisement screen (2) and extraneous power supply are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821442998.0U CN208997892U (en) | 2018-09-04 | 2018-09-04 | A kind of band launches the street lamp of LED advertisement screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821442998.0U CN208997892U (en) | 2018-09-04 | 2018-09-04 | A kind of band launches the street lamp of LED advertisement screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208997892U true CN208997892U (en) | 2019-06-18 |
Family
ID=66798292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821442998.0U Active CN208997892U (en) | 2018-09-04 | 2018-09-04 | A kind of band launches the street lamp of LED advertisement screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208997892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529804A (en) * | 2019-07-08 | 2019-12-03 | 合肥龙发智能科技有限公司 | A kind of slim vertical square face lamp stand screen |
-
2018
- 2018-09-04 CN CN201821442998.0U patent/CN208997892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529804A (en) * | 2019-07-08 | 2019-12-03 | 合肥龙发智能科技有限公司 | A kind of slim vertical square face lamp stand screen |
| CN110529804B (en) * | 2019-07-08 | 2021-11-09 | 合肥龙发智能科技有限公司 | Thin vertical rectangular lamp pole screen |
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