CN215769523U - Outdoor advertisement planning equipment based on big data automatic update - Google Patents

Outdoor advertisement planning equipment based on big data automatic update Download PDF

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Publication number
CN215769523U
CN215769523U CN202121150831.9U CN202121150831U CN215769523U CN 215769523 U CN215769523 U CN 215769523U CN 202121150831 U CN202121150831 U CN 202121150831U CN 215769523 U CN215769523 U CN 215769523U
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groove
locking
board
supporting plate
big data
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CN202121150831.9U
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Chinese (zh)
Inventor
张文军
茹海红
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Zhejiang Shilian Culture Communication Co ltd
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Zhejiang Shilian Culture Communication Co ltd
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Abstract

The utility model discloses outdoor advertisement planning equipment based on big data automatic update, relates to planning auxiliary tools, aims to solve the problem that the work efficiency is low because products cannot be taken and put integrally, and adopts the technical scheme that: the display board comprises a display board and first fixing rods symmetrically arranged on two sides of the display board, wherein a second fixing rod is hinged between the first fixing rods, a writing board and a supporting plate which are positioned on two sides of the display board are arranged between the first fixing rods, the writing board and the supporting plate are both hinged with two ends of the second fixing rod, a containing groove is formed in one side, facing the supporting plate, of the first fixing rod, a supporting rod is hinged in the containing groove, and a plurality of regulating grooves which are arranged in an array mode and used for containing one ends, far away from the first fixing rods, of the supporting rods are formed in the supporting plate.

Description

Outdoor advertisement planning equipment based on big data automatic update
Technical Field
The present invention relates to a planning aid, and more particularly, to an outdoor advertisement planning apparatus that is automatically updated based on big data.
Background
The advertisement plan is analyzed and evaluated for each part of the operation process, and a corresponding implementation plan is made, and finally a summary file in a compendium form is formed. Outdoor advertisement planning needs to examine the field and perform related data analysis to obtain complete analysis data, so that the feasibility of the planning book can be ensured.
The Chinese patent with publication number CN210574742U discloses an outdoor advertisement plan based on big data automatic update, which has the technical key points that: the movable display board comprises a movable display board and a writing board, wherein a fixed rod is fixedly mounted on the left side of the movable display board, an arc-shaped handle is fixedly mounted at the outer end of the left side of the fixed rod, limiting rods are fixedly mounted on the left side and the right side of the writing board, and the limiting rods are movably inserted into the movable display board. When the outdoor advertisement creative plan is conducted, the movable display board can move towards two sides by pulling the arc-shaped handles, so that the writing board can be displayed from the interior of the movable display board.
Above-mentioned scheme is convenient for people to carry out advertisement intention plan, the advertisement intention on the network can be looked over to the activity display panel, be convenient for people revise and draw the advertisement plan, it is convenient to provide for outdoor advertisement plan, the in-process of use, the user can only remove the activity display panel to both sides and make the clipboard follow the inside of activity display panel show the back, just can draw advertisement plan intention on the clipboard, because outdoor light is stronger, and can't adjust the light angle of activity display panel, watch the intention advertisement on the network when the user, and when drawing on the clipboard, can cause the interference to user's sight, make the difficult intention advertisement on the network of seeing of user, influence user's drawing, work efficiency is low.
Therefore, a new solution is needed to solve this problem.
SUMMERY OF THE UTILITY MODEL
The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an outdoor advertising planning apparatus that is automatically updated based on big data and can adjust the light angle of a display panel.
The technical purpose of the utility model is realized by the following technical scheme: the utility model provides an outdoor advertising plan equipment based on big data is automatic to be updated, includes that display panel and symmetry set up the dead lever one in the display panel both sides, two it has dead lever two, two to articulate between the dead lever one be equipped with board and the backup pad that is located the display panel both sides between the dead lever one, board and backup pad all articulate with the both ends of dead lever two, dead lever one is equipped with the holding tank towards one side of backup pad, it has the bracing piece to articulate in the holding tank, be equipped with a plurality of arrays in the backup pad and arrange and be used for holding the bracing piece and keep away from the adjustment tank of dead lever one end, articulated department between board, backup pad and the dead lever is equipped with and is used for restricting board and backup pad pivoted stopper, board and backup pad keep away from the one end of articulated department and are equipped with the locking piece.
Through adopting above-mentioned technical scheme, through setting up bracing piece and backup pad, during the use, the user only need place the backup pad in the appointed place of user, then go into the adjustment tank with the bracing piece card in the holding tank, and can go into the adjustment tank of different positions with the bracing piece card according to user's demand, and then make the user adjust the angle of display panel according to light, and when user needs draw, can draw on the board, make things convenient for the creative advertisement on the reference network, this in-process utilizes the position of restricting part with board and backup pad to prescribe, utilize the locking part to withdraw backup pad and board after using up, moreover, the steam generator is simple in structure, the person of facilitating the use uses, the user is when drawing and referring to the network advertisement, can not cause the interference to the user, therefore, the practicability is high, and still conveniently carry.
The utility model is further configured to: the method is characterized in that: one side of board towards the backup pad is equipped with smooth chamber, be equipped with a plurality of locking holes that are linked together with smooth chamber on the board, the limiting piece includes locking lever, sliding connection of sliding connection in smooth chamber and is used for promoting locking lever and the release link of locking lever displacement in the locking hole, the bracing piece is equipped with the locked groove that is used for holding the locking lever towards one side of board.
Through adopting above-mentioned technical scheme, through setting up the locking lever, locking lever and release link, the user only need through locking lever control locking lever in entering into the locked groove towards backup pad end displacement, when the user withdraws backup pad and board, through the release link control locking lever break away from the locked groove can, play the limited effect to the rotation of backup pad and board, more person of facilitating the use uses.
The utility model is further configured to: the utility model discloses a writing board, including the backup pad, the backup pad is equipped with the locking lever, the locking lever is equipped with the trapezoidal groove that is used for locking the draw-in groove that the locking lever card goes into and the cross-section is L shape and is used for release link card to go into, the opening part in draw-in groove and trapezoidal groove all is equipped with the inclined plane, the end of draw-in groove is held towards the backup pad, fixedly connected with extension spring between the one end that the backup pad was kept away from to the locking lever and the writing board, all be equipped with the piece that resets between locking lever and the release link.
Through adopting above-mentioned technical scheme, through setting up the draw-in groove, dovetail groove and extension spring, during the use, the user is through pressing the locking lever, make the inclined plane displacement downwards of locking lever edge draw-in groove opening part, extension spring takes place deformation, the locking lever enters into the draw-in groove after, the locking lever enters into the lock inslot gradually, extension spring resumes afterwards, the locking lever enters into in the horizontal part of draw-in groove and can prescribe a limit to board and backup pad, not the time spent, only need press the release link, make the locking lever break away from the horizontal part of draw-in groove, loosen the hand afterwards, extension spring reconversion, the locking lever gets into the sliding chamber, this in-process, make locking lever and release link break away from draw-in groove and dovetail groove respectively through the release link, more convenience of customers uses.
The utility model is further configured to: the reset piece includes reset block, cover that fixed connection is on locking lever and release link and establish reset spring between reset block and the board on locking lever and release link, reset spring's both ends respectively with board, reset block fixed connection.
Through adopting above-mentioned technical scheme, through setting up reset block and reset spring, the user is when extrusion locking lever and release link, and reset spring takes place deformation, and after the pine hand, reset spring reconversion for locking lever and release link break away from draw-in groove and dovetail groove respectively, make the locking lever enter into the sliding cavity more smoothly.
The utility model is further configured to: one side that articulated department was kept away from to the board is equipped with the sliding tray, one side of board towards the display panel is equipped with the spread groove that communicates mutually with the sliding tray, the locking piece includes fixed connection in the backup pad towards display panel one side and is used for the locking portion one of embedding spread groove and the locking portion two of sliding connection in the sliding tray, the cross-section of locking portion one and locking portion two all is L shape, just the end fixedly connected with locking piece of locking portion two department, be formed with the joint groove that is used for the end card of locking portion one to go into between the vertical portion of locking piece and locking portion two, fixedly connected with compression spring between two bottoms of locking portion and the board.
Through adopting above-mentioned technical scheme, through setting up locking portion one and locking portion two, during the use, the user only need draw in board and backup pad in, this in-process, through pressing locking portion two, produce the effort to compression spring, compression spring takes place deformation, and locking portion can pass through the spread groove and enter into the sliding tray, the user is loose hand, compression spring resumes, make the end of locking portion one enter into the joint inslot in locking portion two can, play the locking effect to board and backup pad, more the person of facilitating the use carries.
The utility model is further configured to: one end of the lock rod, which is far away from the support plate, is fixedly connected with a fixing strip positioned inside the extension spring.
Through adopting above-mentioned technical scheme, through setting up the fixed strip, the user plays the limited effect to extension spring when the reciprocating displacement of control locking lever along the length direction of sliding chamber for extension spring is difficult for taking place the skew at the in-process that takes place deformation, makes the displacement of locking lever more smooth and easy.
The utility model is further configured to: one side of the lock groove facing the supporting plate is provided with a buffer groove used for containing the fixing strip, and the extension spring is located at the opening edge of the buffer groove.
Through adopting above-mentioned technical scheme, through setting up the dashpot, extension spring is when the reconversion, because inertia, the fixed strip can get into the length direction displacement along the dashpot, and then plays the cushioning effect to the fixed strip, improves the life of fixed strip and board.
The utility model is further configured to: one side of the first fixing rod facing the writing board and one side of the first fixing rod facing the supporting plate are both provided with storage grooves used for containing the writing board and the supporting plate, and gaps exist between the supporting plate and the display plate.
Through adopting above-mentioned technical scheme, put the thing groove through the setting, the user is withdrawing the back to board and backup pad for both all enter into and put the thing inslot, and because all there is the clearance between display panel and board, the backup pad, make when the transport play better guard action to the display panel, improved the life of display panel.
In conclusion, the utility model has the following beneficial effects:
during the use, the user only needs place the backup pad in the appointed place of user, then go into the adjustment tank with the bracing piece card in the holding tank, and can go into the adjustment tank of different positions with the bracing piece card according to user's demand, and then make the user adjust the angle of display panel according to light, and when user's needs draw, can draw on the board, conveniently refer to the intention advertisement on the network, this in-process utilizes the limiting piece to prescribe the board with the position of backup pad, utilize the locking piece to withdraw backup pad and board after using up, moreover, the steam generator is simple in structure, the convenience of customers uses, the user can not cause the interference to the user when drawing and referring to the network advertisement, therefore, the practicability is high, and the steam generator is convenient to carry.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged schematic view at B of FIG. 3;
FIG. 5 is an enlarged schematic view at C of FIG. 3;
fig. 6 is an enlarged schematic view of fig. 3 at D.
Reference numerals: 1. a display panel; 2. fixing a rod I; 3. a storage groove; 4. a writing board; 5. a support plate; 6. a second fixing rod; 7. a support bar; 8. an adjustment groove; 9. a slide chamber; 10. a locking hole; 11. a lock lever; 12. a locking lever; 13. a reset lever; 14. locking the groove; 15. a card slot; 16. a trapezoidal groove; 17. an extension spring; 18. a reset block; 19. a return spring; 20. a sliding groove; 21. connecting grooves; 22. a first locking part; 23. a second locking part; 24. a compression spring; 25. a fixing strip; 26. a buffer tank; 27. a locking block; 28. a clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of 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 and 4, an outdoor advertisement planning apparatus based on big data automatic update comprises a display panel 1 and fixing rods one 2 symmetrically arranged at both sides of the display panel 1, a fixing rod two 6 hinged between the fixing rods one 2, a writing board 4 and a supporting plate 5 arranged at both sides of the display panel 1 between the fixing rods one 2, the writing board 4 and the supporting plate 5 are both hinged with both ends of the fixing rod two 6, an accommodating groove is arranged at one side of the fixing rod one 2 facing the supporting plate 5, a supporting rod 7 is hinged in the accommodating groove, a plurality of adjusting grooves 8 arranged in an array and used for accommodating one ends of the supporting rods 7 far away from the fixing rod one 2 are arranged on the supporting plate 5, a limiting member used for limiting the rotation of the writing board 4 and the supporting plate 5 is arranged at the hinged position between the writing board 4, the supporting plate 5 and the fixing rod one 2, a locking member is arranged at one end far away from the hinged position of the writing board 4 and the supporting plate 5, the user can adjust the angle of the display panel 1 according to the angle of the light, which is convenient for the user to use.
Referring to fig. 4 and 5, a sliding cavity 9 is disposed on one side of the tablet 4 facing the supporting plate 5, a plurality of locking holes 10 communicated with the sliding cavity 9 are disposed on the tablet 4, a limiting member includes a locking bar 11 slidably connected in the sliding cavity 9, a locking bar 12 slidably connected in the locking hole 10 and used for pushing the locking bar 11 to move, and a reset rod 13, a locking groove 14 for accommodating the locking bar 11 is disposed on one side of the supporting rod 7 facing the tablet 4, a locking groove 15 for locking the locking bar 12 and having an L-shaped cross section and a trapezoidal groove 16 for locking the reset rod 13 are disposed on the locking bar 11, inclined surfaces are disposed at openings of the locking groove 15 and the trapezoidal groove 16, an end of the locking groove 15 faces the end of the supporting plate 5, an extension spring 17 is fixedly connected between one end of the locking bar 11 far from the supporting plate 5 and the tablet 4, in an initial state, the locking bar 11 is located in the sliding cavity 9, and a reset member is disposed between the locking bar 12 and the reset rod 13, the reset piece includes reset block 18 of fixed connection on locking lever 12 and release link 13, the cover is established and is located reset spring 19 between reset block 18 and the board 4 on locking lever 12 and release link 13, reset spring 19's both ends respectively with board 4, reset block 18 fixed connection, under the initial condition, the end of locking lever 12 is in the top of draw-in groove 15, the end of release link 13 is in the top of dovetail groove 16, the firm in connection nature of board 4 with backup pad 5 has been increased, and then the stability of display panel 1 has been improved.
Referring to fig. 1, 2 and 5, a sliding groove 20 is disposed on a side of the tablet 4 away from the hinge, a connecting groove 21 communicated with the sliding groove 20 is disposed on a side of the tablet 4 facing the display panel 1, the locking member includes a first locking portion 22 fixedly connected to a side of the support plate 5 facing the display panel 1 and used for being embedded into the connecting groove 21 and a second locking portion 23 slidably connected in the sliding groove 20, the first locking portion 22 and the second locking portion 23 are both L-shaped in cross section, a locking block 27 is fixedly connected to an end of the second locking portion 23, a locking groove 28 for the end of the first locking portion 22 to be clamped into is formed between the locking block 27 and the vertical portion of the second locking portion 23, and a compression spring 24 is fixedly connected between the bottom end of the second locking portion 23 and the tablet 4, so that the connection firmness between the tablet 4 and the support plate 5 is increased, and the protection effect is exerted on the display panel 1.
Referring to fig. 1 and 4, one end of the lock rod 11, which is far away from the support plate 5, is fixedly connected with a fixing strip 25 located inside the extension spring 17, so as to guide the deformation of the extension spring 17, one side of the lock groove 14, which faces the support plate 5, is provided with a buffer groove 26 for accommodating the fixing strip 25 to be embedded, so as to buffer the lock rod 11, and the extension spring 17 is located at the opening edge of the buffer groove 26, so that the service life of the lock rod 11 is prolonged.
Referring to fig. 1, the two fixing rods one 2 are provided with a storage groove 3 for accommodating the tablet 4 and the supporting plate 5 on one side facing the tablet 4 and one side facing the supporting plate 5, and a gap is formed between the supporting plate 5 and the tablet 4 and the display panel 1, so that the contact area between the tablet 4, the supporting plate 5 and the display panel 1 is increased, the display panel 1 is protected better, and the service life of the display panel 1 is further prolonged.
The working principle is as follows: when the multifunctional pen is used, a user only needs to press the second locking part 23 to enable the second locking part 23 to move towards the second fixing rod 6 end along the length direction of the sliding groove 20 and apply acting force to the compression spring 24, the compression spring 24 deforms, at the moment, the first locking part 22 is separated from the clamping groove 28, at the moment, the supporting plate 5 can be separated from the writing plate 4, network advertisements can be drawn on the writing plate 4 and checked on the display panel 1, when the light is strong and the angle of the display panel 1 needs to be adjusted by the user, the user needs to firstly place the supporting plate 5 at a specified position, then take the supporting rod 7 out of the accommodating groove and clamp the end of the supporting rod 7 into the corresponding adjusting groove 8, when the writing plate 4 and the supporting plate 5 are in a horizontal state, the user can press the locking rod 12 and apply acting force to the reset spring 19 through the reset block 18, and the reset spring 19 deforms, the user continues to press locking lever 12, and locking lever 12 enters into draw-in groove 15 along the inclined plane, and locking lever 11 moves towards 5 ends of backup pad along the length direction of sliding chamber 9 and enters into locked groove 14 gradually this moment, produces pulling force to extension spring 17, and back in draw-in groove 15 was entered into completely to the end of locking lever 12, and extension spring 17 reconversion for the horizontal part of draw-in groove 15 is gone into to the end card of locking lever 12, plays limiting displacement to locking lever 11.
After the use of the lock rod 11, the reset rod 13 is pressed to be displaced along the length direction of the inclined surface, so that the lock rod 11 is displaced towards the end of the support plate 5 and enters the trapezoidal groove 16, and the end of the lock rod 12 enters between the horizontal part and the vertical part of the clamping groove 15, at the moment, the reset spring 19 is restored to the original state and generates a reaction force on the reset block 18, so that the reset rod 13 drives the end of the lock rod 12 to be separated from the clamping groove 15, then, the user can release his hand, the reset rod 13 is restored to the original state through the reset block 18 and the reset spring 19, subsequently, the lock rod 11 is gradually separated from the locking groove 14 through the restoration of the extension spring 17, the deformation of the extension spring 17 of the fixing strip 25 plays a guiding role in the reciprocating displacement process of the lock rod 11, and the lock rod 11 enters the sliding cavity 9 through the restoration of the extension spring 17, through the fixing sleeve and the buffer groove 26, play cushioning effect to locking lever 11, and then improved locking lever 11's life, and make bracing piece 7 break away from adjustment tank 8, then can close backup pad 5 and board 4 and imbed in putting thing groove 3, and locking portion 22 can enter into in the sliding tray 20 along the length direction of spread groove 21, locking portion two 23 need be pressed to this in-process, when locking portion 22 enters into the sliding tray 20, the user loosens one's hand, make locking portion 22 the end imbed in the joint groove 28 can, through the mergence of board 4 and backup pad 5, play the guard action to display panel 1, simple structure easily operates, the user can adjust the light angle of display panel 1, can be better look over the content that shows on the display panel 1, the person of facilitating the use uses, the practicality is high.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (8)

1. An outdoor advertisement planning device based on big data automatic update is characterized in that: the display board comprises a display board (1) and fixing rods I (2) symmetrically arranged on two sides of the display board (1), a fixing rod II (6) is hinged between the two fixing rods I (2), a writing board (4) and a supporting plate (5) which are positioned on two sides of the display board (1) are arranged between the two fixing rods I (2), the writing board (4) and the supporting plate (5) are both hinged with two ends of the fixing rod II (6), an accommodating groove is arranged on one side, facing the supporting plate (5), of the fixing rod I (2), a supporting rod (7) is hinged in the accommodating groove, a plurality of adjusting grooves (8) which are arranged in an array mode and used for accommodating one ends, far away from the fixing rods I (2), of the supporting rod (7) are arranged on the supporting plate (5), and limiting pieces used for limiting rotation of the writing board (4) and the supporting plate (5) are arranged at hinged positions among the writing board (4), the supporting plate (5) and the fixing rods I (2), and locking pieces are arranged at one ends, far away from the hinged part, of the writing board (4) and the supporting plate (5).
2. An outdoor advertising planning apparatus based on big data automatic update according to claim 1, wherein: tablet (4) are equipped with smooth chamber (9) towards one side of backup pad (5), be equipped with locking hole (10) that a plurality of and smooth chamber (9) are linked together on tablet (4), the restriction piece includes locking lever (11), sliding connection in smooth chamber (9) and be used for promoting locking lever (12) and release link (13) of locking lever (11) displacement in locking hole (10), bracing piece (7) are equipped with locked groove (14) that are used for holding locking lever (11) towards one side of tablet (4).
3. An outdoor advertising planning apparatus based on big data automatic update according to claim 2, wherein: be equipped with on locking lever (11) and be used for locking lever (12) card to go into and the cross-section is draw-in groove (15) of L shape and be used for trapezoidal groove (16) that release link (13) card was gone into, the opening part of draw-in groove (15) and trapezoidal groove (16) all is equipped with the inclined plane, the end of draw-in groove (15) is held towards backup pad (5), fixedly connected with extension spring (17) between one end and board (4) of backup pad (5) are kept away from in locking lever (11), all be equipped with the piece that resets between locking lever (12) and release link (13).
4. An outdoor advertising planning apparatus based on big data automatic update according to claim 3, wherein: the reset piece includes reset block (18) of fixed connection on locking lever (12) and release link (13), overlaps and establish reset spring (19) that just is located between reset block (18) and board (4) on locking lever (12) and release link (13), the both ends of reset spring (19) respectively with board (4), reset block (18) fixed connection.
5. An outdoor advertising planning apparatus based on big data automatic update according to claim 1, wherein: a sliding groove (20) is arranged on one side of the writing board (4) far away from the hinged part, a connecting groove (21) communicated with the sliding groove (20) is arranged on one side of the writing board (4) facing the display board (1), the locking piece comprises a first locking part (22) which is fixedly connected to one side of the supporting plate (5) facing the display panel (1) and is used for being embedded into the connecting groove (21) and a second locking part (23) which is connected into the sliding groove (20) in a sliding mode, the cross sections of the first locking part (22) and the second locking part (23) are both L-shaped, the end head of the second locking part (23) is fixedly connected with a locking block (27), a clamping groove (28) for clamping the end head of the first locking part (22) is formed between the locking block (27) and the vertical part of the second locking part (23), and a compression spring (24) is fixedly connected between the bottom end of the second locking part (23) and the writing board (4).
6. An outdoor advertising planning apparatus based on big data automatic update according to claim 3, wherein: one end of the lock rod (11) far away from the support plate (5) is fixedly connected with a fixing strip (25) positioned in the extension spring (17).
7. An outdoor advertising planning apparatus based on big data automatic update according to claim 6, wherein: one side of the lock groove (14) facing the support plate (5) is provided with a buffer groove (26) for accommodating the embedding of the fixing strip (25), and the extension spring (17) is positioned at the opening edge of the buffer groove (26).
8. An outdoor advertising planning apparatus based on big data automatic update according to claim 1, wherein: two one (2) side towards board (4) of dead lever all is equipped with the thing groove (3) of putting that is used for holding board (4) and backup pad (5) one side towards backup pad (5), there is the clearance between backup pad (5) and board (4) all and display panel (1).
CN202121150831.9U 2021-05-26 2021-05-26 Outdoor advertisement planning equipment based on big data automatic update Active CN215769523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121150831.9U CN215769523U (en) 2021-05-26 2021-05-26 Outdoor advertisement planning equipment based on big data automatic update

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121150831.9U CN215769523U (en) 2021-05-26 2021-05-26 Outdoor advertisement planning equipment based on big data automatic update

Publications (1)

Publication Number Publication Date
CN215769523U true CN215769523U (en) 2022-02-08

Family

ID=80098157

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121150831.9U Active CN215769523U (en) 2021-05-26 2021-05-26 Outdoor advertisement planning equipment based on big data automatic update

Country Status (1)

Country Link
CN (1) CN215769523U (en)

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