CN111710265A - Multifunctional spray painting billboard - Google Patents

Multifunctional spray painting billboard Download PDF

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Publication number
CN111710265A
CN111710265A CN202010586491.8A CN202010586491A CN111710265A CN 111710265 A CN111710265 A CN 111710265A CN 202010586491 A CN202010586491 A CN 202010586491A CN 111710265 A CN111710265 A CN 111710265A
Authority
CN
China
Prior art keywords
cloth
spray
spray painting
drive
inkjet
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.)
Pending
Application number
CN202010586491.8A
Other languages
Chinese (zh)
Inventor
陈新枫
黄法奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huian Hualuo Advertising Design Center
Original Assignee
Huian Hualuo Advertising Design Center
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huian Hualuo Advertising Design Center filed Critical Huian Hualuo Advertising Design Center
Priority to CN202010586491.8A priority Critical patent/CN111710265A/en
Publication of CN111710265A publication Critical patent/CN111710265A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0068Modular articulated structures, e.g. stands, and articulation means therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/005Rigidly-arranged sunshade roofs with coherent surfaces
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F11/00Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
    • G09F11/02Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being secured to rotating members, e.g. drums, spindles
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0006Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/0087Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like including movable parts, e.g. movable by the wind
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/02Bills, posters, or the like therefor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

The invention relates to the technical field of billboards, in particular to a multifunctional spray-painting billboard which comprises a base, a pillar, a clearance groove, a rack, a fixed plate, a driving element, a connecting frame, a rotating shaft and a gear. The invention has the beneficial effects that: the vertical removal of drive element drive link has been set up, make gear and rack toothing transmission, and then the drive pivot rotates, drive the upset of air brushing cloth installation panel, like this when rainy day, can install panel upset 90 degrees with air brushing cloth, make air brushing cloth installation panel can play the effect of taking shelter from the rain, the pedestrian can stand and take shelter from the rain in air brushing cloth installation panel below like this, the in-process of taking shelter from the rain, the contact time with the bill-board has been increased, thereby do benefit to the advertising effect of bill-board, in addition because the bill-board can overturn, pedestrian's attention has additionally been increased like this, the degree of attention is improved, and then the advertising effect is strengthened.

Description

Multifunctional spray painting billboard
Technical Field
The invention relates to the technical field of billboards, in particular to a multifunctional spray-painted billboard.
Background
The spray painting cloth billboard uses spray painting cloth printed with advertisement content, and connects the spray painting cloth on a frame by screws to realize the advertisement display function, but the spray painting billboard can only display fixed advertisement content in the fixed direction, when the advertising content needs to be replaced, the advertising content can be alternately displayed by manually adjusting the mounting position of the spray painting advertising board, obviously, the mode completely needs manpower to operate, when the area of the billboard is larger, more than two persons are usually needed to operate, which increases the labor cost and increases the labor intensity, in addition, in rainy days, when pedestrians forget to take the umbrella, the attention to the billboard is generally reduced for avoiding rain, or in the rain-avoiding process of the pedestrians, because the walking speed is fast, neglected the advertising content of bill-board, obviously in this kind of occasion, can reduce the advertising effect of bill-board.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a multifunctional spray-painting billboard which can solve the problems in the prior art at least to a certain extent.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a multifunctional spray painting billboard comprises a base, wherein two ends of the base in the length direction are respectively vertically provided with a support column, the outer walls of the two opposite sides of the support columns are respectively provided with a gap-shaped clearance groove which stretches across the length direction of the support columns, the inner wall of one side of the clearance groove corresponding to the width direction of the base is vertically provided with a rack, the inner wall of the clearance groove is horizontally provided with a fixed plate, the fixed plate is vertically provided with a driving element, the driving element is connected with a connecting frame in a driving way, each of the two connecting frames is horizontally and rotatably connected with a rotating shaft, one end of the rotating shaft penetrating into the defect part of the connecting frame is coaxially sleeved with a gear, the two gears are respectively meshed with the two racks, the other ends of the two rotating shafts are jointly connected with one end of a spray painting cloth mounting panel in the length direction, the width direction of the spray painting cloth mounting panel is parallel to, and the gear and the rack are meshed for transmission to drive the spray painting cloth mounting panel to turn over along the axial direction of the rotating shaft.
As a further optimization of the solution described above, the drive element is an electric push rod.
As a further optimization of the above technical solution, the length of the rack is greater than the circumference of the gear.
As the further optimization of the technical scheme, the working method for realizing the functions of keeping off rain and/or replacing the advertisement content comprises the following steps:
step 1, the driving element acts to drive the connecting frame to move upwards, and in the process of moving the connecting frame upwards, the two gears are respectively in meshing transmission with the two racks;
step 2, the gear and the rack are meshed for transmission to drive the rotating shaft to rotate for 90 degrees, and at the moment, the length direction of the spray painting cloth mounting panel is parallel to the top surface of the base, so that the function of keeping off rain is achieved;
and 3, continuously driving the gear and the rack to be meshed and driven by the driving element to enable the rotating shaft to rotate 180 degrees, and then turning the spray painting cloth mounting panel 180 degrees immediately, so that the function of replacing the advertisement content is realized.
As a further optimization of the technical scheme, two outer walls of the inkjet cloth mounting panel in the thickness direction are respectively provided with a soft rubber layer, a cavity is arranged inside the inkjet cloth mounting panel, a plurality of air holes communicated with the cavity are formed in the surface of the soft rubber layer in an array mode, a pipe joint communicated with the cavity is arranged on the outer wall of one side of the inkjet cloth mounting panel, and a manual valve is mounted on the pipe joint.
As a further optimization of the above technical solution, the working method for installing the inkjet printing cloth printed with advertisement content comprises:
step a, respectively paving two pieces of spray-painting cloth printed with advertisement contents on the two soft adhesive layers, and manually paving the spray-painting cloth uniformly;
step b, an external air suction pump is communicated with a pipe joint through an air pipe, the manual valve is opened, the external air suction pump works to suck air, and air in the cavity is sucked through the pipe joint;
c, when the air in the cavity is pumped out, negative pressure is generated inside the cavity, the spray painting cloth is adsorbed on the soft adhesive layer under the action of the negative pressure due to the fact that the surface of the spray painting cloth is attached to the soft adhesive layer, and the spray painting cloth is firmly adsorbed on the soft adhesive layer and cannot fall off due to the fact that the soft adhesive layer has large friction with the surface of the spray painting cloth;
and d, when replacing the spray painting cloth with other advertisement contents, firstly opening the manual valve to enable external air to enter the cavity from the pipe joint, taking the spray painting cloth originally adsorbed on the soft rubber layer down after the negative pressure action of the spray painting cloth is lost, and then repeating the steps a to c to install other spray painting cloth.
The invention has the beneficial effects that: the driving element is arranged to drive the connecting frame to vertically move, so that the gear and the rack are meshed for transmission, the rotating shaft is further driven to rotate, the spray painting cloth mounting panel is driven to turn, in rainy days, the spray painting cloth mounting panel can be turned for 90 degrees, the spray painting cloth mounting panel can play a role of rain sheltering, a pedestrian can stand below the spray painting cloth mounting panel to shelter from rain, in the rain sheltering process, the contact time with the advertising board is increased, and therefore the advertising effect of the advertising board is facilitated, in addition, as the advertising board can be turned, the attention of the pedestrian is additionally increased, the attention is improved, and further the advertising effect is increased, in addition, the rotating shaft can rotate for 180 degrees through the driving of the driving element, the spray painting cloth mounting panel rotates for 180 degrees around the axial direction of the rotating shaft, so that the advertising content on the other side of the spray painting cloth mounting panel can be displayed without manual, the intensity of labour is reduced, and reduce the human cost, the coupling has been set up, manual valve, the flexible glue layer, the bleeder vent, when installing two printing cloths that are printed with advertisement content, directly spread the printing cloth evenly on the soft glue layer, bleed through outside aspiration pump, make the cavity form the negative pressure, and via the bleeder vent, make the printing cloth adsorb on the soft glue layer, because the friction resistance on soft glue layer and printing cloth surface is great, and then can make the printing cloth adsorb firmly on printing cloth installation panel, realize the quick installation of printing cloth, replace among the prior art, use connected mode such as screw, the installation time has been reduced, and can not produce the damage to printing cloth installation panel and printing cloth, and then can realize used repeatedly, the cost is reduced, and improve the installation effectiveness of printing cloth, in addition, the flexible glue layer can multiplicable its and the sealed degree on printing cloth surface.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a multi-functional inkjet billboard of the invention;
FIG. 2 is a schematic top view of the three-dimensional structure of FIG. 1;
FIG. 3 is an enlarged partial view of the three-dimensional structure of FIG. 2 at A;
FIG. 4 is a schematic side view of the three-dimensional structure of FIG. 1;
FIG. 5 is a schematic perspective view of the connection state of the printed cloth mounting panel, the gear, the connecting frame and the rotating shaft in the multifunctional printed billboard of the invention;
FIG. 6 is a schematic cross-sectional view of the perspective structure of FIG. 5;
the reference numerals are explained below:
the device comprises a pipe joint 1, a manual valve 2, a spray painting cloth mounting panel 3, a soft adhesive layer 4, air holes 5, a cavity 6, a fixing plate 7, an electric push rod 8, an empty avoiding groove 9, a support column 10, a base 11, a gear 12, a rack 13, a connecting frame 14 and a rotating shaft 15.
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 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, but not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, fig. 1-6 show a multifunctional spray-painting billboard, which comprises a base 11, wherein two pillars 10 are vertically arranged at two ends of the base 11 in the length direction, gap-type clearance grooves 9 crossing the length direction are respectively arranged on the outer walls of the two opposite sides of the two pillars 10, racks 13 are vertically arranged on the inner walls of the clearance grooves 9 corresponding to the width direction of the base 11, a fixing plate 7 is horizontally arranged on the inner walls of the clearance grooves 9, an electric push rod 8 is vertically arranged on the fixing plate 7, a connecting frame 14 is connected to the electric push rod 8 in a driving manner, two rotating shafts 15 are respectively connected to the two connecting frames 14 in a horizontal rotating manner, a gear 12 is coaxially sleeved at one end of each rotating shaft 15 penetrating into the defective part of the connecting frame 14, the two gears 12 are respectively engaged with the two racks 13, the other ends of the two rotating shafts 15 are commonly connected to one end of a spray-painting cloth mounting panel 3, the width direction of the spray painting cloth mounting panel 3 is parallel to the length direction of the base 11, when the electric push rod 8 drives the connecting frame 14 to vertically move, the gear 12 and the rack 13 are meshed for transmission to drive the spray painting cloth mounting panel 3 to turn over along the axial direction of the rotating shaft 15, the length of the rack 13 is larger than the circumference of the gear 12, and therefore the spray painting cloth mounting panel 3 can turn over for 180 degrees.
The embodiment also discloses a working method of the billboard with the functions of keeping off rain and/or replacing advertisement content in the application, and the working method comprises the following steps:
step 1, the electric push rod 8 acts to drive the connecting frame 14 to move upwards, and in the process that the connecting frame 14 moves upwards, the two gears 12 are respectively in meshed transmission with the two racks 13;
step 2, the gear 12 and the rack 13 are meshed for transmission to drive the rotating shaft 15 to rotate by 90 degrees (or rotate by nearly 90 degrees), and at the moment, the length direction of the spray drawing cloth mounting panel 3 is parallel to the top surface of the base 11, so that the rain shielding function is realized;
and 3, continuously driving the gear 12 and the rack 13 to be meshed and driven by the electric push rod 8, so that the rotating shaft 15 rotates for 180 degrees, and at the moment, the spray painting cloth mounting panel 3 is immediately turned for 180 degrees, thereby realizing the function of replacing the advertisement content.
The utility model discloses a pneumatic spray painting cloth installation panel, including the printing cloth installation panel 3, be equipped with the hose glue layer 4 on the two outer walls of 3 thickness directions of printing cloth installation panel, the inside cavity 6 that is equipped with of printing cloth installation panel 3, the array is equipped with a plurality of bleeder vents 5 that communicate with cavity 6 on the hose glue layer 4 surface, be equipped with the coupling 1 with cavity 6 intercommunication on the outer wall of 3 one side of printing cloth installation panel, install manual valve 2 on the coupling 1.
The embodiment also discloses a working method for installing the inkjet cloth printed with the advertisement content outside the billboard in the application, and the working method comprises the following steps:
step a, respectively paving two pieces of spray-painting cloth printed with advertisement contents on the two soft rubber layers 4, and manually paving the spray-painting cloth uniformly;
b, opening the manual valve 2 by an external air pump through the air pipe communicating pipe joint 1, enabling the external air pump to work to pump air, and pumping air in the cavity 6 through the pipe joint 1;
c, when the air in the cavity 6 is pumped out, negative pressure is generated in the cavity, the spray painting cloth is adsorbed on the soft rubber layer 4 under the action of the negative pressure due to the fact that the surface of the spray painting cloth is attached to the soft rubber layer 4, and the manual valve 2 is closed due to the fact that the soft rubber layer 4 has large friction with the surface of the spray painting cloth, so that the interior of the cavity 16 is kept in a negative pressure state, and the spray painting cloth is firmly adsorbed on the soft rubber layer 4 and cannot fall off;
and d, when replacing the spray painting cloth with other advertisement contents, firstly opening the manual valve 2 to enable the external air to enter the cavity 6 from the pipe joint 1, taking the spray painting cloth which is originally adsorbed on the soft rubber layer 4 down after the negative pressure effect is lost, and then repeating the steps a-c to install other spray painting cloth.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (6)

1. The multifunctional spray-painting billboard is characterized by comprising a base (11), wherein two pillars (10) are vertically arranged at two ends of the base (11) in the length direction, two clearance grooves (9) which span the length direction and are in a notch form are respectively arranged on the outer walls of the opposite sides of the pillars (10), racks (13) are vertically arranged on the inner wall of one side of the clearance groove (9) corresponding to the width direction of the base (11), a fixing plate (7) is horizontally arranged on the inner wall of the clearance groove (9), a driving element is vertically arranged on the fixing plate (7), a connecting frame (14) is connected to the driving element in a driving mode, a rotating shaft (15) is connected to each connecting frame (14) in a horizontal rotating mode, a gear (12) is coaxially sleeved at one end of the rotating shaft (15) penetrating into the defect part of the connecting frame (14), and the gears (12) are respectively meshed with the two racks (13), two the spray drawing cloth installation panel (3) length direction one end is connected jointly to pivot (15) other end, spray drawing cloth installation panel (3) width direction is parallel with base (11) length direction, when drive element drive link (14) vertical removal, make gear (12) and rack (13) meshing transmission drive, drive spray drawing cloth installation panel (3) are followed pivot (15) axial and are overturned.
2. The multi-functional inkjet billboard of claim 1, characterized in that the driving element is an electric push rod (8).
3. The multi-functional inkjet billboard according to claim 1, characterized in that the rack (13) is longer than the gear (12) in circumference.
4. The multifunctional inkjet billboard according to claim 1, wherein the working method for realizing the functions of keeping off rain and/or replacing advertising contents comprises:
step 1, the driving element acts to drive the connecting frame (14) to move upwards, and in the process that the connecting frame (14) moves upwards, the two gears (12) are respectively in meshing transmission with the two racks (13);
step 2, the gear (12) and the rack (13) are in meshed transmission to drive the rotating shaft (15) to rotate for 90 degrees, and at the moment, the length direction of the spray drawing cloth mounting panel (3) is parallel to the top surface of the base (11), so that the rain shielding function is realized;
and 3, the driving element continues to drive the gear (12) to be meshed with the rack (13) for transmission, so that the rotating shaft (15) rotates for 180 degrees, and at the moment, the spray painting cloth mounting panel (3) is immediately turned for 180 degrees, thereby realizing the function of replacing the advertisement content.
5. The multifunctional inkjet billboard according to claim 1, characterized in that two outer walls of the inkjet cloth mounting panel (3) in the thickness direction are respectively provided with a soft adhesive layer (4), a cavity (6) is arranged inside the inkjet cloth mounting panel (3), a plurality of air holes (5) communicated with the cavity (6) are arranged on the surface of the soft adhesive layer (4) in an array manner, a pipe joint (1) communicated with the cavity (6) is arranged on the outer wall of one side of the inkjet cloth mounting panel (3), and a manual valve (2) is arranged on the pipe joint (1).
6. The multifunctional inkjet billboard according to claim 5, wherein the working method for installing inkjet cloth printed with advertising contents comprises:
step a, respectively paving two pieces of spray-painting cloth printed with advertisement contents on the two soft rubber layers (4), and manually paving the spray-painting cloth uniformly;
step b, an external air suction pump is communicated with a pipe joint (1) through an air pipe, the manual valve (2) is opened, the external air suction pump works to suck air, and air in the cavity (6) is sucked out through the pipe joint (1);
c, when the air in the cavity (6) is pumped out, negative pressure is generated in the cavity, the surface of the spray painting cloth is attached to the soft adhesive layer (4), the spray painting cloth is adsorbed on the soft adhesive layer (4) under the action of the negative pressure, and the spray painting cloth is firmly adsorbed on the soft adhesive layer (4) and cannot fall off due to the fact that the soft adhesive layer (4) has large friction with the surface of the spray painting cloth;
and d, when replacing the spray painting cloth with other advertisement contents, firstly opening the manual valve (2) to enable the external air to enter the cavity (6) through the pipe joint (1), taking the spray painting cloth which is originally adsorbed on the soft rubber layer (4) down after the negative pressure effect is lost, and then repeating the steps a to c to install other spray painting cloth.
CN202010586491.8A 2020-06-24 2020-06-24 Multifunctional spray painting billboard Pending CN111710265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010586491.8A CN111710265A (en) 2020-06-24 2020-06-24 Multifunctional spray painting billboard

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Application Number Priority Date Filing Date Title
CN202010586491.8A CN111710265A (en) 2020-06-24 2020-06-24 Multifunctional spray painting billboard

Publications (1)

Publication Number Publication Date
CN111710265A true CN111710265A (en) 2020-09-25

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CN202010586491.8A Pending CN111710265A (en) 2020-06-24 2020-06-24 Multifunctional spray painting billboard

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114429738A (en) * 2022-02-14 2022-05-03 刘松玉 Multifunctional propaganda device for civil engineering construction safety and use method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203870939U (en) * 2014-04-11 2014-10-08 魏庆 Advertising screen with advertisement poster replaced conveniently
CN206385841U (en) * 2017-01-20 2017-08-08 四川农业大学 A kind of multi-functional Explanation Board
CN107507539A (en) * 2017-09-30 2017-12-22 重庆远望广告有限公司 A kind of billboard
CN206877602U (en) * 2017-07-21 2018-01-12 刘玉华 A kind of novel outdoor billboard of high security
CN110379331A (en) * 2019-05-27 2019-10-25 陈佳还 A kind of intelligent interaction LED light box
CN209543826U (en) * 2019-04-12 2019-10-25 广州越美电子科技有限公司 A kind of Novel LED billboard

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203870939U (en) * 2014-04-11 2014-10-08 魏庆 Advertising screen with advertisement poster replaced conveniently
CN206385841U (en) * 2017-01-20 2017-08-08 四川农业大学 A kind of multi-functional Explanation Board
CN206877602U (en) * 2017-07-21 2018-01-12 刘玉华 A kind of novel outdoor billboard of high security
CN107507539A (en) * 2017-09-30 2017-12-22 重庆远望广告有限公司 A kind of billboard
CN209543826U (en) * 2019-04-12 2019-10-25 广州越美电子科技有限公司 A kind of Novel LED billboard
CN110379331A (en) * 2019-05-27 2019-10-25 陈佳还 A kind of intelligent interaction LED light box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114429738A (en) * 2022-02-14 2022-05-03 刘松玉 Multifunctional propaganda device for civil engineering construction safety and use method thereof

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Application publication date: 20200925