CN107331320A - It is a kind of that there is adjustable LED lamp box capable of displaying movable images - Google Patents

It is a kind of that there is adjustable LED lamp box capable of displaying movable images Download PDF

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Publication number
CN107331320A
CN107331320A CN201710685950.6A CN201710685950A CN107331320A CN 107331320 A CN107331320 A CN 107331320A CN 201710685950 A CN201710685950 A CN 201710685950A CN 107331320 A CN107331320 A CN 107331320A
Authority
CN
China
Prior art keywords
box capable
casing
lamp box
led lamp
motion bar
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.)
Granted
Application number
CN201710685950.6A
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Chinese (zh)
Other versions
CN107331320B (en
Inventor
王昱伟
李方园
张冲
郭颖
李治
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Xinxiang University
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Xinxiang University
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Filing date
Publication date
Application filed by Xinxiang University filed Critical Xinxiang University
Priority to CN201710685950.6A priority Critical patent/CN107331320B/en
Publication of CN107331320A publication Critical patent/CN107331320A/en
Application granted granted Critical
Publication of CN107331320B publication Critical patent/CN107331320B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0413Frames or casing structures therefor
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418Constructional details

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The present invention relates to lamp box capable of displaying movable images technical field, it is specially a kind of that there is adjustable LED lamp box capable of displaying movable images, activity is plugged with motion bar in the guide cylinder, the motion bar reaches one section of sidewall symmetry in casing through guide cylinder and is connected with two the first spur racks, the inner chamber of the casing is provided with the first irregular gear engaged with the first spur rack of motion bar upper end, first rotating shaft is plugged with the middle part of first irregular gear, the inner chamber of the casing is provided with the second irregular gear engaged with the first spur rack of motion bar lower end, the second rotating shaft is plugged with the middle part of the second irregular gear, the other end of second rotating shaft is connected with the second motor installed in cabinet wall, waterproof effect is good, prevent it from causing damage, reduce the workload of maintainer, reduce maintenance number of times simultaneously, reduce danger, with prominent substantive distinguishing features and significant progress.

Description

It is a kind of that there is adjustable LED lamp box capable of displaying movable images
Technical field
It is specially a kind of that there is adjustable LED lamp box capable of displaying movable images the present invention relates to lamp box capable of displaying movable images technical field.
Background technology
Existing LED lamp box capable of displaying movable images is typically all to install eminence out of doors, and is typically all fixed installation, position Put unadjustable, after prolonged use, when rainy, rainwater is immersed in LED lamp box capable of displaying movable images, and drop gets to circuit On plate, short circuit is caused, display effect maintenance, it is necessary to which maintainer climbs up of LED lamp box capable of displaying movable images is influenceed, to maintainer Personal safety cause a hidden trouble, therefore, it is proposed that it is a kind of have adjustable LED lamp box capable of displaying movable images.
The content of the invention
There is adjustable LED lamp box capable of displaying movable images it is an object of the invention to provide a kind of, to solve above-mentioned background skill The problem of being proposed in art.
To achieve the above object, the present invention provides following technical scheme:
A kind of to have adjustable LED lamp box capable of displaying movable images, including casing, the right side central of the casing is communicated with guiding Cylinder, and the other end insertion of guide cylinder is connected with activity in waterproof frame, the guide cylinder and is plugged with motion bar, the motion bar is worn The one section of sidewall symmetry crossed in guide cylinder arrival casing is connected with two the first spur racks, and the inner chamber of the casing is provided with and activity First rotating shaft is plugged with the middle part of first irregular gear of the first spur rack engagement of bar upper end, the first irregular gear, the The other end of one rotating shaft is connected with the first motor installed in cabinet wall, and the inner chamber of the casing is provided with and motion bar lower end The second rotating shaft, the second rotating shaft are plugged with the middle part of second irregular gear of the first spur rack engagement, the second irregular gear The other end be connected with the second motor installed in cabinet wall;
The other end of the motion bar reaches waterproof inframe through guide cylinder and is connected with lamp house body, and the lamp house body is leaned on Two the second spur racks are symmetrically connected with the upside of one end of nearly guide cylinder, the inner chamber roof of the waterproof frame from left to right connects successively Be connected to driven voller and pulley roller, and pulley roller is located at the right side of lamp house body, the two ends of driven voller be plugged with two it is second straight Waterproof cloth is surrounded with rack meshed gears, driven voller, the other end of the waterproof cloth is connected with the first magnetic through pulley roller Iron, the bottom wall of inner cavity of the waterproof frame offers the first groove corresponding with the first magnet, the bottom wall connection of first groove There is the second magnet, the side wall of the waterproof frame offers two through holes, and the motion bar is located at one section of upper end in waterproof inframe portion Offer and sliding block is slidably connected in chute, the chute, the sliding block is connected with the second bullet close to a side wall of guide cylinder Spring, and the other end of second spring and the side wall of chute connect, the upper end of the sliding block is connected with L-type bar, the L-type bar it is another One end is connected with push rod;
The front end side wall of the lamp house body is connected with cylinder, and the intracavity bottom of the cylinder is connected with fixed block, described The upper center of fixed block offers the second groove, and the bottom of second groove is connected with the first contact by the 3rd spring, The madial wall of the cylinder is connected with annulus, and the upper end of the annulus is connected with piston, the piston by multiple 4th springs Lower end be connected with piston rod, the other end of the piston rod is reached through annulus offers the 3rd groove above fixed block, The second wafer is connected with 3rd groove, the side wall of the cylinder offers the tapping hole above piston, the tapping hole Sidewall symmetry be connected with two fix bars, the side wall of the fix bar is connected with sealing plate by the 5th spring.
It is preferred that, the sidewall symmetry of first groove is connected with two the first springs, the other end of first spring Baffle plate is connected with, the opposite one end of two baffle plates is in convex structure.
It is preferred that, the through hole and the second spur rack are located in same level.
It is preferred that, the sidewall symmetry of the fixed block is hinged with two straight-bars tilted upward, the other end of the straight-bar The middle part of clamp is connected with, two opposite side walls of the clamp are connected with the 6th spring, and the other end of the 6th spring It is connected with the upper end of fixed block, the side wall lower ends of the piston rod are connected with depression bar corresponding with clamp.
It is preferred that, two opposite one end of the clamp are covered with elastomeric pad.
It is preferred that, the depression bar is of an L-shaped structure, and the downward one end of depression bar is in convex structure.
It is preferred that, the quantity more than three of the 4th spring, and multiple 4th springs are in equidistant ring distribution.
It is preferred that, the length of the push rod is more than chute to the beeline of lamp house body.
Compared with prior art, the beneficial effects of the invention are as follows:This adjustable LED lamp box capable of displaying movable images, by adding Waterproof frame, motion bar, cylinder, the first irregular gear and the first motor, the first electric motor starting drive the first irregular gear suitable Hour hands are rotated, and motion bar is moved inward, and drive lamp house body to be moved to waterproof inframe, prevent rainwater from causing to damage to lamp house body Bad, the second spur tooth rack belt moving gear is rotated, and under the Action of Gravity Field of the first magnet, waterproof cloth is moved down, and the second magnet is by the One magnet is held, baffle plate clamping so that the framework of waterproof frame formation closing, improves the security of lamp house body, push rod is promoted Sealing plate, rainwater is flowed out at tapping hole, and piston is moved up, and the first contact and the second wafer are disconnected, and the first motor stops fortune OK, lamp house body is protected well, waterproof effect is good, prevent it from causing damage, reduce the workload of maintainer, simultaneously Maintenance number of times is reduced, danger is reduced, with prominent substantive distinguishing features and significant progress.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is A portions of the present invention mplifying structure schematic diagram;
Fig. 3 is B portions of the present invention mplifying structure schematic diagram;
Fig. 4 is C portions of the present invention mplifying structure schematic diagram.
In figure:Casing 1, the first irregular gear 11, the second irregular gear 12, guide cylinder 2, waterproof frame 3, gear 31, Pulley roller 32, waterproof cloth 33, the first magnet 34, the first groove 35, the second magnet 36, the first spring 37, baffle plate 38, through hole 39, Motion bar 4, the first spur rack 41, chute 42, sliding block 43, second spring 44, L-type bar 45, push rod 46, lamp house body 5, second are straight Rack 51, cylinder 6, fixed block 61, the second groove 611, the 3rd spring 612, the first contact 613, straight-bar 614, clamp 615, circle Ring 62, the 4th spring 621, piston 63, piston rod 631, the second wafer 632, depression bar 633, tapping hole 64, fix bar the 65, the 5th Spring 66, sealing plate 67.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Fig. 1-4 are referred to, the present invention provides a kind of technical scheme:
A kind of to have adjustable LED lamp box capable of displaying movable images, including casing 1, the right side central of casing 1 is communicated with guide cylinder 2, and the other end insertion of guide cylinder 2 is connected with activity in waterproof frame 3, guide cylinder 2 and is plugged with motion bar 4, motion bar 4 is through leading The one section of sidewall symmetry reached to cylinder 2 in casing 1 is connected with two the first spur racks 41, and the inner chamber of casing 1 is provided with and motion bar 4 First irregular gear 11 of the first spur rack 41 engagement of upper end, the middle part of the first irregular gear 11 is plugged with first turn Axle, the other end of first rotating shaft is connected with the first motor installed in the inwall of casing 1, the inner chamber of casing 1 be provided with motion bar 4 Second irregular gear 12 of the first spur rack 41 engagement at end, the second irregular middle part of gear 12 is plugged with the second rotating shaft, the The other end of two rotating shafts is connected with the second motor installed in the inwall of casing 1;
The other end of motion bar 4 reaches in waterproof frame 3 through guide cylinder 2 and is connected with lamp house body 5, and lamp house body 5 is close Two the second spur racks 51 are symmetrically connected with the upside of one end of guide cylinder 2, the inner chamber roof of waterproof frame 3 is from left to right sequentially connected There are driven voller and pulley roller 32, and pulley roller 32 is located at the right side of lamp house body 5, the two ends of driven voller are plugged with and two second Waterproof cloth 33 is surrounded with the meshed gears 31 of spur rack 51, driven voller, the other end of waterproof cloth 33 is connected through pulley roller 32 Have the first magnet 34, the bottom wall of inner cavity of waterproof frame 3 offer with corresponding first groove 35 of the first magnet 34, the first groove 35 Bottom wall is connected with the second magnet 36, and the sidewall symmetry of the first groove 35 is connected with two the first springs 37, the first spring 37 it is another One end is connected with baffle plate 38, and the opposite one end of two baffle plates 38 is in convex structure, for the first magnet 34 to be blocked, waterproof frame 3 side wall offers two through holes 39, and the spur rack 51 of through hole 39 and second is located in same level, and motion bar 4 is located at waterproof One section of upper end inside frame 3 offers and sliding block 43 is slidably connected in chute 42, chute 42, sliding block 43 close to guide cylinder 2 one Side wall is connected with second spring 44, and the other end of second spring 44 is connected with the side wall of chute 42, and the upper end of sliding block 43 connects L-type bar 45 is connected to, the other end of L-type bar 45 is connected with push rod 46, and the length of push rod 46 is more than chute 42 and arrives lamp house body 5 most Short distance, is easy to push rod 46 to promote sealing plate 67, allows rainwater to be flowed out out of cylinder 6;
The front end side wall of lamp house body 5 is connected with cylinder 6, and the intracavity bottom of cylinder 6 is connected with fixed block 61, fixed block 61 Upper center offer the second groove 611, the bottom of the second groove 611 is connected with the first contact by the 3rd spring 612 613, the madial wall of cylinder 6 is connected with annulus 62, and the upper end of annulus 62 is connected with piston 63 by multiple 4th springs 621, the The quantity more than three of four springs 621, and multiple 4th springs 621 are in equidistant ring distribution, uniform force, the lower end of piston 63 Piston rod 631 is connected with, the other end of piston rod 631 offers the 3rd groove through the top that annulus 62 reaches fixed block 61, The second wafer 632 is connected with 3rd groove, the sidewall symmetry of fixed block 61 is hinged with two straight-bars tilted upward 614, directly The other end of bar 614 is connected with the middle part of clamp 615, and two opposite one end of clamp 615 are covered with elastomeric pad, plays protection The purpose of first contact 613, two opposite side walls of clamp 615 are connected with the 6th spring, and the other end of the 6th spring It is connected with the upper end of fixed block 61, the side wall lower ends of piston rod 631 are connected with depression bar 633 corresponding with clamp 615, depression bar 633 It is of an L-shaped structure, and the downward one end of depression bar 633 is in convex structure, reduction depression bar 633 is contacted with clamp 615 causes damage, circle The side wall of cylinder 6 offers the tapping hole 64 positioned at the top of piston 63, and the sidewall symmetry of tapping hole 64 is connected with two fix bars 65, The side wall of fix bar 65 is connected with sealing plate 67 by the 5th spring 66.
This adjustable LED lamp box capable of displaying movable images, when raining, rainwater is dropped onto in cylinder 6, pushes piston 63, piston rod 631 move down therewith, using lever principle, and depression bar 633 opens the clamp 615 being horizontal, and the 3rd spring 612 will The ejection of first contact 613 is contacted with the second wafer 632, connects the circuit of the first motor, and the first electric motor starting, first rotating shaft drives First irregular gear 11 is rotated clockwise, and motion bar 4 is moved into casing 1, drives the lamp house body of the other end of motion bar 4 5 are moved into waterproof frame 3, and when lamp house body 5 is moved to the lower left of pulley roller 32, the second spur rack 51 is nibbled with gear 31 Close, the second spur rack 51 is rotated with moving gear 31, and under the Action of Gravity Field of the first magnet 34, waterproof cloth 33 is moved down, when anti- When water cloth 33 is moved in the first groove 35, the second magnet 36 attracts the first magnet 34, plays fixed purpose, the baffle plate of both sides 38 block the first magnet 34 so that the framework of the formation closing of waterproof frame 3, improve the security of lamp house body 5, now, push away Bar 46 promotes sealing plate 67 to the inner chamber of cylinder 6 so that tapping hole 64 is connected with cylinder 6, and rainwater flows out at tapping hole 64, piston 63 are moved up, and the first contact 613 and the second wafer 632 are disconnected, and the first motor is out of service, when stopping raining, start the Two motors, the second rotating shaft drives the second irregular gear 12 to rotate clockwise, and drives motion bar 4 to push out, waterproof cloth 33 Shrink, lamp house body 5 is pushed into outside waterproof frame 3, lamp house body 5 is protected well, waterproof effect is good, prevent it from causing damage, Reduce the workload of maintainer, while reducing maintenance number of times, reduce danger, with prominent substantive distinguishing features and It is significant progressive.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims (8)

1. a kind of have adjustable LED lamp box capable of displaying movable images, including casing (1), it is characterised in that:The right side of the casing (1) Middle side part is communicated with guide cylinder (2), and the other end insertion of guide cylinder (2) is connected with waterproof frame (3), the guide cylinder (2) Activity is plugged with motion bar (4), and the motion bar (4) reaches one section of sidewall symmetry connection in casing (1) through guide cylinder (2) There are two the first spur racks (41), the inner chamber of the casing (1) is provided with engages with first spur rack (41) of motion bar (4) upper end The first irregular gear (11), be plugged with first rotating shaft, the other end of first rotating shaft in the middle part of the first irregular gear (11) The first motor installed in casing (1) inwall is connected with, the inner chamber of the casing (1) is provided with first with motion bar (4) lower end The second rotating shaft is plugged with the middle part of second irregular gear (12) of spur rack (41) engagement, the second irregular gear (12), The other end of second rotating shaft is connected with the second motor installed in casing (1) inwall;
The other end of the motion bar (4) reaches in waterproof frame (3) through guide cylinder (2) and is connected with lamp house body (5), the lamp Case body (5) is symmetrically connected with two the second spur racks (51) on the upside of one end of guide cylinder (2), the waterproof frame (3) Inner chamber roof is from left to right connected with driven voller and pulley roller (32) in turn, and pulley roller (32) is located at the right side of lamp house body (5) Side, the two ends of driven voller be plugged with two the second spur rack (51) meshed gears (31), be surrounded with waterproof cloth on driven voller (33), the other end of the waterproof cloth (33) is connected with the first magnet (34) through pulley roller (32), the waterproof frame (3) it is interior Bottom of chamber wall offers the first groove (35) corresponding with the first magnet (34), and the bottom wall of first groove (35) is connected with second Magnet (36), the side wall of the waterproof frame (3) offers two through holes (39), and it is internal that the motion bar (4) is located at waterproof frame (3) One section of upper end offer chute (42), slidably connects sliding block (43) in the chute (42), the sliding block (43) is close to leading Second spring (44) is connected with to a side wall of cylinder (2), and the other end of second spring (44) connects with the side wall of chute (42) Connect, the upper end of the sliding block (43) is connected with L-type bar (45), and the other end of the L-type bar (45) is connected with push rod (46);
The front end side wall of the lamp house body (5) is connected with cylinder (6), and the intracavity bottom of the cylinder (6) is connected with fixed block (61), the upper center of the fixed block (61) offers the second groove (611), and the bottom of second groove (611) passes through 3rd spring (612) is connected with the first contact (613), and the madial wall of the cylinder (6) is connected with annulus (62), the annulus (62) upper end is connected with piston (63) by multiple 4th springs (621), and the lower end of the piston (63) is connected with piston rod (631), the other end of the piston rod (631) reaches through annulus (62) and offers the 3rd groove above fixed block (61), The second wafer (632) is connected with 3rd groove, the side wall of the cylinder (6) offers the tapping hole above piston (63) (64), the sidewall symmetry of the tapping hole (64) is connected with two fix bars (65), and the side wall of the fix bar (65) passes through Five springs (66) are connected with sealing plate (67).
2. it is according to claim 1 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:Described first The sidewall symmetry of groove (35) is connected with two the first springs (37), and the other end of first spring (37) is connected with baffle plate (38), the opposite one end of two baffle plates (38) is in convex structure.
3. it is according to claim 1 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:The through hole (39) it is located at the second spur rack (51) in same level.
4. it is according to claim 1 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:The fixation The sidewall symmetry of block (61) is hinged with two straight-bars tilted upward (614), and the other end of the straight-bar (614) is connected with clamp (615) middle part, two opposite side walls of the clamp (615) are connected with the 6th spring, and the other end of the 6th spring It is connected with the upper end of fixed block (61), the side wall lower ends of the piston rod (631) are connected with depression bar corresponding with clamp (615) (633)。
5. it is according to claim 4 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:Described in two The opposite one end of clamp (615) is covered with elastomeric pad.
6. it is according to claim 4 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:The depression bar (633) it is of an L-shaped structure, and the downward one end of depression bar (633) is in convex structure.
7. it is according to claim 1 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:Described 4th The quantity more than three of spring (621), and multiple 4th springs (621) are in equidistant ring distribution.
8. it is according to claim 1 a kind of with adjustable LED lamp box capable of displaying movable images, it is characterised in that:The push rod (46) length is more than the beeline that chute (42) arrives lamp house body (5).
CN201710685950.6A 2017-08-11 2017-08-11 LED animation shows lamp house with adjustable Expired - Fee Related CN107331320B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710685950.6A CN107331320B (en) 2017-08-11 2017-08-11 LED animation shows lamp house with adjustable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710685950.6A CN107331320B (en) 2017-08-11 2017-08-11 LED animation shows lamp house with adjustable

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CN107331320A true CN107331320A (en) 2017-11-07
CN107331320B CN107331320B (en) 2020-05-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109524092A (en) * 2018-09-28 2019-03-26 宁波鑫义信息科技有限公司 A kind of hospital admission queuing strategy
CN110956904A (en) * 2020-01-14 2020-04-03 嵊州略白广告有限公司 Multifunctional advertising board
CN111768680A (en) * 2020-08-04 2020-10-13 侯宜彬 Wisdom urban road sign

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Publication number Priority date Publication date Assignee Title
CN2540008Y (en) * 2002-03-22 2003-03-12 李建平 Road lamp type rotating lamp house
CN101388162A (en) * 2008-10-10 2009-03-18 北京中庆微数字设备开发有限公司 Trample type LED display screen
CN202544429U (en) * 2012-02-22 2012-11-21 梁熙喆 Movable multifunctional advertising media commercial service booth
CN204577009U (en) * 2015-04-24 2015-08-19 天津智慧港教育科技有限公司 A kind of educational propaganda hurdle device
CN205421767U (en) * 2016-03-22 2016-08-03 潘能红 Outdoor intelligent rail of commodity apartment
CN106652804A (en) * 2017-03-20 2017-05-10 南阳理工学院 Ideological and political propaganda device
WO2017120769A1 (en) * 2016-01-12 2017-07-20 深圳市奥拓电子股份有限公司 Locking component, and modular led screen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2540008Y (en) * 2002-03-22 2003-03-12 李建平 Road lamp type rotating lamp house
CN101388162A (en) * 2008-10-10 2009-03-18 北京中庆微数字设备开发有限公司 Trample type LED display screen
CN202544429U (en) * 2012-02-22 2012-11-21 梁熙喆 Movable multifunctional advertising media commercial service booth
CN204577009U (en) * 2015-04-24 2015-08-19 天津智慧港教育科技有限公司 A kind of educational propaganda hurdle device
WO2017120769A1 (en) * 2016-01-12 2017-07-20 深圳市奥拓电子股份有限公司 Locking component, and modular led screen
CN205421767U (en) * 2016-03-22 2016-08-03 潘能红 Outdoor intelligent rail of commodity apartment
CN106652804A (en) * 2017-03-20 2017-05-10 南阳理工学院 Ideological and political propaganda device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109524092A (en) * 2018-09-28 2019-03-26 宁波鑫义信息科技有限公司 A kind of hospital admission queuing strategy
CN110956904A (en) * 2020-01-14 2020-04-03 嵊州略白广告有限公司 Multifunctional advertising board
CN111768680A (en) * 2020-08-04 2020-10-13 侯宜彬 Wisdom urban road sign
CN111768680B (en) * 2020-08-04 2021-12-28 中电云科信息技术有限公司 Wisdom urban road sign

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