CN112530327A - Can multi-angle show advertising content's advertising signboard - Google Patents
Can multi-angle show advertising content's advertising signboard Download PDFInfo
- Publication number
- CN112530327A CN112530327A CN202011115923.3A CN202011115923A CN112530327A CN 112530327 A CN112530327 A CN 112530327A CN 202011115923 A CN202011115923 A CN 202011115923A CN 112530327 A CN112530327 A CN 112530327A
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- China
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- advertising
- plate
- supporting plate
- multiple angles
- fixedly connected
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/02—Bills, posters, or the like therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The invention relates to the technical field of advertising signboards, and discloses an advertising signboard capable of displaying advertising contents at multiple angles, which comprises a supporting plate, wherein a supporting box is fixedly communicated with the middle position of the bottom of the supporting plate vertically downwards; and four rotating plates which are distributed in a matrix are arranged between the two side plates. When the two pin shafts move oppositely, the rotating plates can be driven by the support arms to adjust the angles, and the four rotating plates are distributed in a diamond shape to facilitate observation of horizontal personnel in all directions, so that the problems that a rotating signboard adopted in the prior art cannot be completely observed and the practicability exists are solved.
Description
Technical Field
The invention relates to the technical field of advertising signboards, in particular to an advertising signboard capable of displaying advertising contents in multiple angles.
Background
At present, advertisement media are various, advertisement modes are different, advertisement mechanisms are long, advertisement extension is numerous and complex, people explore different advertisement selection angles, analyzed advertisement sides are even different, so that understanding of advertisements by different theoretical schools is inevitable, and definition of advertisements in different genres is beneficial to scientifically understanding the meaning of advertisements because the advertisement phenomena are disclosed from different angles and basic outlines of advertisements are described.
Through retrieval application number 201911051158.0, the invention discloses an advertising signboard capable of displaying advertising content in multiple angles, which comprises a support frame, a box body and a signboard, wherein the bottom of the box body is fixedly connected with the top of the support frame. Although this can advertisement signboard of multi-angle show advertising content, through first gear, the cooperation of second gear and rotation post, motor control rotates the plectane and rotates, rotate the plectane, the head rod, the side fixed plate, rotate the plectane, the stopper, the cooperation of top fixed plate and second connecting rod, make the signboard level rotate, through electric telescopic handle, the cooperation of second connecting rod and top fixed plate, change the signboard above the top fixed plate and the contained angle of horizontal plane, realize the purpose of multi-angle show signboard, through the drag hook, the rubber band, the position of pressing from both sides tight piece is adjusted to V type piece and connecting block, fix the position of signboard through pressing from both sides tight piece, can not any damage, be convenient for change.
However, the inventor finds that the technical scheme still has at least the following defects:
the rotary sign board is adopted in the technology, so that the road can not be observed completely, the practicability problem exists, and improvement is needed.
Disclosure of Invention
The invention aims to provide an advertising signboard capable of displaying advertising contents at multiple angles, which solves the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an advertising signboard capable of displaying advertising contents at multiple angles comprises a supporting plate, wherein a supporting box is fixedly communicated with the middle position of the bottom of the supporting plate vertically and downwards, side plates are fixedly connected with the middle positions of the left side and the right side of the upper surface of the supporting plate vertically and upwards, and the upper parts of the two side plates are fixedly connected with the same top cover; four rotating plates which are distributed in a matrix are arranged between the two side plates; the upper part and the lower part of one side of each rotating plate, which is close to the side plate, are fixedly provided with shaft rods movably connected with the supporting plate and the top cover;
the bottom of the inner cavity of the support box is fixedly provided with a storage battery, the middle position of the upper part of the inner wall of the support box is vertically and upwards fixedly provided with a servo motor, the driving end of the servo motor is vertically and upwards fixedly connected with a transmission shaft lever, and a processor is fixedly arranged on the right upper part of the inner cavity of the support box; the upper end part of the transmission shaft lever is fixedly connected with a driving gear;
two of transversely align change between the inboard through three proofings elastic cloth elastic fixation connection, be located two the middle part transversely is provided with the crown gear between the curb plate, and the intermediate position of crown gear left and right sides wall is fixedly connected with left-hand thread lead screw and right-hand thread lead screw respectively, crown gear and driving gear meshing, the opposite one end of left-hand thread lead screw and right-hand thread lead screw and two curb plate inner wall swing joint, the level vertically aligns two change inboard middle part of board all through hinge activity hinge at the head end of support arm, two the tail end of support arm is articulated with same round pin axle activity, two the round pin axle closes respectively with left-hand thread lead screw and right-hand thread lead screw twist and runs through.
As a preferred embodiment of the present invention, a base plate is fixedly connected to the bottom of the support box, and a positioning hole is vertically formed in the middle of each of the left and right portions of the base plate.
As a preferred embodiment of the present invention, a photovoltaic panel is fixedly mounted on the top cover, and the photovoltaic panel is electrically connected to the storage battery.
As a preferred embodiment of the present invention, each of the rotating plates has a rectangular notch on an outer side surface thereof.
As a preferred embodiment of the present invention, a heat dissipation window is disposed outside the right side of the top cover, an air delivery channel is disposed on the right half portion of the top cover, and an exhaust fan is fixedly mounted at the head end of the air delivery channel.
As a preferred embodiment of the invention, the lower part of the side plate positioned on the right side of the supporting plate is fixedly embedded with an air inlet screen plate, and the left side of the air inlet screen plate is fixedly connected with an air filter element.
In a preferred embodiment of the present invention, the upper and lower surfaces of each of the rotating plates are movably and closely attached to the top cover and the supporting plate, respectively.
In a preferred embodiment of the present invention, the left-threaded lead screw and the right-threaded lead screw have opposite thread directions.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, a servo motor works to drive a transmission shaft lever to work to drive a driving gear to rotate, the driving gear drives a crown gear to be meshed, so that a left-thread lead screw and a right-thread lead screw are driven to rotate simultaneously, and the left-thread lead screw and the right-thread lead screw drive two adaptive pin shafts to move oppositely or oppositely when rotating; when two round pin axles removed in opposite directions, can drive the commentaries on classics board through the support arm and carry out angle of adjustment, four commentaries on classics boards this moment are the personnel that the rhombus distributes and make things convenient for the horizontally all directions to observe, avoid adopting rotatory tablet of marking among the prior art, can not be complete observed, have the problem of practicality.
2. In the operation process of the servo motor, the heat generated by the work of the exhaust fan to the servo motor is exhausted, and the service life of the servo motor is prolonged.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of an overall structure of an advertisement signboard capable of displaying advertisement contents in multiple angles according to the present invention;
FIG. 2 is a schematic view of a side view structure of an advertising signboard with a multi-angle advertisement content showing structure in which a left and a right screw lead screws are screwed with respective pin threads;
FIG. 3 is a schematic view of a cross-sectional structure of four rotating plates of an advertisement signboard with multi-angle advertisement content display according to the present invention;
FIG. 4 is a schematic view of a rear view structure of an advertisement signboard capable of displaying advertisement contents in multiple angles according to the present invention;
FIG. 5 is a schematic view of a side view of the connection between the three-proofing elastic cloth and two rotating plates of the advertising signboard with multi-angle advertisement content display according to the present invention;
FIG. 6 is a schematic view of a connection structure of a shaft lever and a rotating plate of an advertisement signboard capable of displaying advertisement contents in multiple angles according to the present invention;
fig. 7 is an enlarged schematic view of a structure at a position a of an advertisement signboard capable of displaying advertisement contents in multiple angles according to the present invention.
In the figure: 1. a support box; 2. a substrate; 3. positioning holes; 4. a support plate; 5. rotating the plate; 6. a side plate; 7. a top cover; 8. a photovoltaic panel; 9. a heat dissipation window; 10. a rectangular notch; 11. an air inlet net plate; 12. a processor; 13. a storage battery; 14. a servo motor; 15. a drive shaft; 16. a left-threaded lead screw; 17. a crown gear; 18. an exhaust fan; 19. a wind delivery channel; 20. a right-threaded lead screw; 21. a driving gear; 22. three-proofing elastic cloth; 23. a pin shaft; 24. a support arm; 25. a hinge; 26. a shaft rod.
The apparatus of the present invention is commercially available and custom made.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element 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; in the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can, for example, be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-7, the present invention provides a technical solution: an advertising signboard capable of displaying advertising contents at multiple angles comprises a supporting plate 4, wherein a supporting box 1 is fixedly communicated with the bottom of the supporting plate 4 vertically downwards at the middle position of the bottom, side plates 6 are fixedly connected with the middle positions of the left side and the right side of the upper surface of the supporting plate 4 vertically upwards, and the upper parts of the two side plates 6 are fixedly connected with a top cover 7; four rotating plates 5 which are distributed in a matrix are arranged between the two side plates 6; the upper part and the lower part of one side of each rotating plate 5, which is close to the side plate 6, are fixedly provided with shaft levers 26 which are movably connected with the supporting plate 4 and the top cover 7;
the bottom of the inner cavity of the support box 1 is fixedly provided with a storage battery 13, the middle position of the upper part of the inner wall of the support box 1 is vertically and upwardly fixedly provided with a servo motor 14, the driving end of the servo motor 14 is vertically and upwardly fixedly connected with a transmission shaft lever 15, and a processor 12 is fixedly arranged at the right upper part of the inner cavity of the support box 1; the upper end part of the transmission shaft lever 15 is fixedly connected with a driving gear 21;
the inner sides of two transversely aligned rotating plates 5 are elastically and fixedly connected through a three-proofing elastic cloth 22, a crown gear 17 is transversely arranged in the middle between the two side plates 6, the middle positions of the left side wall and the right side wall of the crown gear 17 are respectively and fixedly connected with a left thread screw rod 16 and a right thread screw rod 20, the crown gear 17 is meshed with a driving gear 21, one ends of the left thread screw rod 16 and the right thread screw rod 20, which are opposite, are movably connected with the inner walls of the two side plates 6, the middle positions of the inner sides of the two horizontally and longitudinally aligned rotating plates 5 are movably hinged at the head ends of support arms 24 through hinges 25, the tail ends of the two support arms 24 are movably hinged with the same pin shaft 23, and the two pin; specifically, the method comprises the following steps: the external fixing rivets are matched with the two positioning holes 3 on the base plate 2 so as to fix the base plate on the bottom surface, in actual operation, the processor 12 controls the servo motor 14 to perform positive and negative rotation operation, the servo motor 14 works to drive the transmission shaft rod 15 to work to drive the driving gear 21 to rotate, the driving gear 21 drives the crown gear 17 to be meshed, so that the left threaded screw rod 16 and the right threaded screw rod 20 are driven to rotate simultaneously, and the left threaded screw rod 16 and the right threaded screw rod 20 drive the two matched pin shafts 23 to move oppositely or oppositely when rotating; when the two pin shafts 23 move oppositely, the rotating plates 5 can be driven by the support arms 24 to adjust the angles, and the four rotating plates 5 are distributed in a diamond shape at the moment, so that the observation of personnel in all horizontal directions is facilitated, and the problems that a rotating signboard is adopted in the prior art, the observation cannot be completely carried out, and the practicability exists are solved; during the operation of the servo motor 14, the heat generated by the servo motor 14 is exhausted by the operation of the exhaust fan 18, and the service life of the servo motor 14 is prolonged.
In this embodiment (see fig. 1), a substrate 2 is fixedly connected to the bottom of the supporting box 1, and positioning holes 3 are vertically formed in the middle of the left and right portions of the substrate 2.
In this embodiment, the photovoltaic panel 8 is fixedly mounted on the top cover 7, and the photovoltaic panel 8 is electrically connected with the storage battery 13 in an input manner.
In this embodiment (see fig. 1), a rectangular notch 10 is formed on an outer side surface of each rotating plate 5, so that the advertisement sign can be conveniently and fixedly mounted.
In this embodiment (please refer to fig. 2), the heat dissipation window 9 is disposed outside the right side of the top cover 7, the air transportation channel 19 is disposed on the right half portion of the top cover 7, the suction fan 18 is fixedly installed at the head end of the air transportation channel 19, and in the operation process of the servo motor 14, the heat generated by the suction fan 18 to the servo motor 14 is discharged, so that the service life of the servo motor 14 is prolonged.
In this embodiment (please refer to fig. 2), the air inlet screen plate 11 is fixedly embedded in the lower portion of the side plate 6 on the right side of the supporting plate 4, and the air filter element is fixedly connected to the left side of the air inlet screen plate 11, so that the air filter element can prevent external dust from entering the inner cavity and causing inconvenient cleaning.
In this embodiment (see fig. 2), the upper and lower surfaces of each rotating plate 5 are movably and tightly sealed with the top cover 7 and the supporting plate 4, so as to prevent external dust from entering the inner cavity and causing inconvenient cleaning.
In this embodiment (see fig. 2), the left threaded screw 16 and the right threaded screw 20 have opposite thread directions, so as to ensure that the two pins 23 can be driven to move in opposite directions.
When the advertising signboard capable of displaying the advertising content in multiple angles is used, it should be noted that the advertising signboard capable of displaying the advertising content in multiple angles is provided, each component is a universal standard component or a component known to a person skilled in the art, and the structure and the principle of the advertising signboard can be known to the person skilled in the art through a technical manual or through a conventional experimental method.
When the device is used, the external fixing rivets are matched with the two positioning holes 3 on the substrate 2 so as to fix the device on the bottom surface, in actual operation, the processor 12 controls the servo motor 14 to perform positive and negative rotation operation, the servo motor 14 works to drive the transmission shaft rod 15 to work to drive the driving gear 21 to rotate, the driving gear 21 drives the crown gear 17 to be meshed, so that the left threaded screw rod 16 and the right threaded screw rod 20 are simultaneously driven to rotate, and the left threaded screw rod 16 and the right threaded screw rod 20 drive the two matched pin shafts 23 to move oppositely or oppositely when rotating; when the two pin shafts 23 move oppositely, the rotating plates 5 can be driven by the support arms 24 to adjust the angles, and the four rotating plates 5 are distributed in a diamond shape at the moment, so that the observation of personnel in all horizontal directions is facilitated, and the problems that a rotating signboard is adopted in the prior art, the observation cannot be completely carried out, and the practicability exists are solved; during the operation of the servo motor 14, the heat generated by the servo motor 14 is exhausted by the operation of the exhaust fan 18, and the service life of the servo motor 14 is prolonged.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a can show advertising content's advertising signboard of multi-angle which characterized in that: the supporting device comprises a supporting plate (4), wherein a supporting box (1) is fixedly communicated with the bottom of the supporting plate (4) vertically and downwards at the middle position of the bottom of the supporting plate, side plates (6) are fixedly connected with the middle positions of the left side and the right side of the upper surface of the supporting plate (4) vertically and upwards, and the upper parts of the two side plates (6) are fixedly connected with the same top cover (7); four rotating plates (5) which are distributed in a matrix are arranged between the two side plates (6); the upper part and the lower part of one side of each rotating plate (5) close to the side plate (6) are fixedly provided with shaft rods (26) movably connected with the supporting plate (4) and the top cover (7);
a storage battery (13) is fixedly installed at the bottom of the inner cavity of the support box (1), a servo motor (14) is vertically and upwardly and fixedly installed at the middle position of the upper part of the inner wall of the support box (1), a driving end of the servo motor (14) is vertically and upwardly and fixedly connected with a transmission shaft lever (15), and a processor (12) is fixedly installed at the right upper part of the inner cavity of the support box (1); the upper end part of the transmission shaft lever (15) is fixedly connected with a driving gear (21);
two of transversely align change between board (5) the inboard through three proofings elastic cloth (22) elastic fixation connection, be located two the middle part transversely is provided with crown gear (17) between curb plate (6), and crown gear (17) left and right sides wall intermediate position is fixedly connected with left-hand thread lead screw (16) and right screw lead screw (20) respectively, and crown gear (17) and driving gear (21) meshing, the opposite one end and two of left-hand thread lead screw (16) and right screw lead screw (20) curb plate (6) inner wall swing joint, horizontal vertical two of aliging change inboard middle part of board (5) and all articulate the head end in support arm (24) through hinge (25) activity, two the tail end and same round pin axle (23) activity of support arm (24) are articulated, two round pin axle (23) are twisted respectively with left-hand thread lead screw (16) and right screw lead screw (20) and are closed and run through.
2. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the positioning hole (3) is vertically formed in the middle positions of the left part and the right part of the base plate (2).
3. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the photovoltaic panel (8) is fixedly mounted on the top cover (7), and the photovoltaic panel (8) is electrically connected with the storage battery (13) in an input mode.
4. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the outer side surface of each rotating plate (5) is provided with a rectangular notch (10).
5. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the heat dissipation window (9) has been seted up to top cap (7) right side outside, is located wind transmission passageway (19) has been seted up to top cap (7) right half, is located the head end fixed mounting of wind transmission passageway (19) has extraction fan (18).
6. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: an air inlet screen plate (11) is fixedly embedded into the lower portion of the side plate (6) on the right side of the supporting plate (4), and an air filter element is fixedly connected to the left side of the air inlet screen plate (11).
7. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the upper surface and the lower surface of each rotating plate (5) are respectively movably and closely combined with the top cover (7) and the supporting plate (4).
8. The advertising signboard capable of displaying advertising contents in multiple angles according to claim 1, wherein: the thread directions of the left thread screw rod (16) and the right thread screw rod (20) are opposite.
Priority Applications (1)
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CN202011115923.3A CN112530327A (en) | 2021-01-15 | 2021-01-15 | Can multi-angle show advertising content's advertising signboard |
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CN202011115923.3A CN112530327A (en) | 2021-01-15 | 2021-01-15 | Can multi-angle show advertising content's advertising signboard |
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CN209928924U (en) * | 2019-04-19 | 2020-01-10 | 江西传媒职业学院(江西省印刷高级技工学校、江西省新闻出版广电局(省版权局)培训中心) | Energy-saving and environment-friendly advertising board for city |
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CN111486401A (en) * | 2020-06-10 | 2020-08-04 | 江苏祺创光电集团有限公司 | Lithium electricity solar energy thing networking wisdom street lamp |
CN211427743U (en) * | 2020-02-20 | 2020-09-04 | 辽东学院 | Multi-azimuth billboard capable of improving visual transmission effect |
CN211454954U (en) * | 2020-03-27 | 2020-09-08 | 四川省和信源创劳务有限公司 | Talent training presentation device |
CN211742591U (en) * | 2020-05-19 | 2020-10-23 | 陕西工业职业技术学院 | Think political affairs propaganda and use show shelf with folding function |
CN211827907U (en) * | 2020-05-19 | 2020-10-30 | 广东工贸职业技术学院 | Display board for advertisement design convenient to adjust display board angle |
CN211858034U (en) * | 2020-05-09 | 2020-11-03 | 青岛城之美创意科技股份有限公司 | Energy-saving outdoor advertising lamp box with solar energy auxiliary energy supply |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN209928924U (en) * | 2019-04-19 | 2020-01-10 | 江西传媒职业学院(江西省印刷高级技工学校、江西省新闻出版广电局(省版权局)培训中心) | Energy-saving and environment-friendly advertising board for city |
CN110930823A (en) * | 2019-12-25 | 2020-03-27 | 南京中视联教育科学技术研究中心 | Display device for mathematical education |
CN211427743U (en) * | 2020-02-20 | 2020-09-04 | 辽东学院 | Multi-azimuth billboard capable of improving visual transmission effect |
CN211454954U (en) * | 2020-03-27 | 2020-09-08 | 四川省和信源创劳务有限公司 | Talent training presentation device |
CN211858034U (en) * | 2020-05-09 | 2020-11-03 | 青岛城之美创意科技股份有限公司 | Energy-saving outdoor advertising lamp box with solar energy auxiliary energy supply |
CN211742591U (en) * | 2020-05-19 | 2020-10-23 | 陕西工业职业技术学院 | Think political affairs propaganda and use show shelf with folding function |
CN211827907U (en) * | 2020-05-19 | 2020-10-30 | 广东工贸职业技术学院 | Display board for advertisement design convenient to adjust display board angle |
CN111486401A (en) * | 2020-06-10 | 2020-08-04 | 江苏祺创光电集团有限公司 | Lithium electricity solar energy thing networking wisdom street lamp |
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Application publication date: 20210319 |