CN202650454U - Mounting equipment of LED display unit box - Google Patents

Mounting equipment of LED display unit box Download PDF

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Publication number
CN202650454U
CN202650454U CN 201220217589 CN201220217589U CN202650454U CN 202650454 U CN202650454 U CN 202650454U CN 201220217589 CN201220217589 CN 201220217589 CN 201220217589 U CN201220217589 U CN 201220217589U CN 202650454 U CN202650454 U CN 202650454U
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CN
China
Prior art keywords
led display
display unit
unit casing
erecting device
rotating shaft
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.)
Expired - Fee Related
Application number
CN 201220217589
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Chinese (zh)
Inventor
唐逖
王启权
吴涵渠
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.)
Shenzhen Aoto Electronics Co Ltd
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Shenzhen Aoto Electronics Co Ltd
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.)
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Priority to CN 201220217589 priority Critical patent/CN202650454U/en
Application granted granted Critical
Publication of CN202650454U publication Critical patent/CN202650454U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses mounting equipment of an LED display box. The mounting equipment is used for mounting the LED display box at the leading edge of a stand and comprises a main framework, limiting columns and rollers, wherein the main framework adopts framework structure, at least one side of the main framework is used for fixedly connecting with the leading edge of the stand; the two limiting columns are vertically arranged on one side of the main framework in parallel, and limiting grooves capable of allowing the rollers to roll up and down therein are formed in the limiting columns; and the two rollers can be arranged on the back side of the LED display unit box in a rotating manner and are respectively located in the corresponding limiting grooves of the two limiting columns. With the mounting equipment adopting the technical scheme, the LED display unit can be conveniently mounted at the front edge of the stand, ensuring mounting precision and display quality; and if the LED display unit box is needed to be taken down due to major maintenance, the whole LED display unit box also can be conveniently taken out.

Description

A kind of erecting device of led display unit casing
Technical field
The utility model relates to LED display technique field, is specifically related to a kind of erecting device of led display unit casing.
Background technology
At present, the LED display that is used for advertisement, publicity etc. has been widely used in various courts, but the led display unit casing that adopt in present court substantially all is square-folded, consistency of thickness, and adopt the back pullout (BPO) structure to realize protection and maintenance, and its ventilation waterproof structure is arranged on the rear surface of casing, thereby to having relatively high expectations of safeguard structure, so that design is complicated, processing cost is high, the inapplicable forward position that is installed in the court grandstand.Although the mode of opening before the module integral body that adopts minority led display unit casing realizes safeguarding, be mounted in grandstand forward position, court after, then to adopt the maintenance rig of specialty if need repairing, operating personnel are had relatively high expectations, so that maintenance cost is high.
In sum, existing led display unit casing is not suitable for being installed in the forward position of court grandstand, needs to improve.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of erecting device that is fit to the led display unit casing is installed in the led display unit casing in grandstand forward position, court, solves the problem that present led display unit casing inconvenience is installed in the grandstand forward position.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of erecting device of led display unit casing, it is used for the led display unit casing is mounted to the grandstand forward position, and the erecting device of described led display unit casing comprises: main framing, limited post and roller; Described main framing is framed structure, and its at least one side is used for being fixedly connected with the grandstand forward position; Described limited post has two at least, a vertical parallel side that is fixedly installed on main framing, and be provided with in the limited post and can hold the described roller stopper slot of scroll-up/down within it; Described roller has two at least, rotatably is arranged on the dorsal part of described led display unit casing, and lays respectively in two spacing stopper slots of leaning on separately.
In the preferred technical scheme, described roller comprises: wheel, wheel shaft, adjusting screw(rod) and setting nut; Described wheel has two, rotatably is located in respectively the two ends of described wheel shaft; One end of described adjusting screw(rod) is fixedly connected with the middle part of wheel shaft, and the other end of adjusting screw(rod) is used for being fixedly connected with the led display unit casing, and the axis of adjusting screw(rod) is vertical with the axis of wheel shaft; Be used for to regulate the described setting nut of wheel and led display unit casing distance, be located on the described adjusting screw(rod) and with adjusting screw(rod) and be threaded.
In the preferred technical scheme, also be provided with limited block in the described limited post.
In the preferred technical scheme, described stopper slot upper end is open, and lower end closed.
In the preferred technical scheme, the erecting device of described led display unit casing also comprises clamping mechanism; Described clamping mechanism comprises: guide groove, positioning rotating shaft and support unit; Described guide groove vertically is fixedly installed on led display unit casing dorsal part; Described support unit is fixedly installed in the described guide groove; Described positioning rotating shaft rotatably is arranged on the main framing, and it has by position and support level, when the rotational positioning rotating shaft is extremely passed through the position, positioning rotating shaft one end can slide in guide groove and pass through described support unit place, the rotational positioning rotating shaft is during to support level, and positioning rotating shaft one end cannot pass through described support unit place.
In the further preferred technical scheme, described positioning rotating shaft comprises: axis body, axle head and handle; Described axle head is fixedly connected with the axis body front end, and both axis quadratures; Described handle is fixedly connected with the axis body rear portion; Make axis body around the rotation of its axis by handle, can be so that described axis body level, this moment, positioning rotating shaft was support level; Make axis body around its axis rotation by handle, can be so that described axis body to be vertical, this moment, positioning rotating shaft was for passing through the position.
Further in the preferred technical scheme, described positioning rotating shaft comprises the screens breach; Described clamping mechanism also comprises bolt; Described screens breach is arranged on the described axis body; Described bolt rotatably is arranged on the main framing, and rotates this bolt its end is held out against at described locating notch place.
In the further preferred technical scheme, described support unit comprises: back-up block, back-up block installation shaft and back-moving spring again; Described back-up block installation shaft is horizontally set in the guide groove, and correspondence position has the support window on the guide groove; Described back-up block one end is located on the described back-up block installation shaft, and can be around described back-up block installation shaft rotation; Described action of reset spring makes an end maintenance level of back-up block and upper along contacting with described support window between guide groove and back-up block.
In the further preferred technical scheme, the erecting device of described led display unit casing also comprises fixed sturcture; Described fixed sturcture has two covers, is separately positioned on both sides, described main framing top.
Further in the preferred technical scheme, described fixed sturcture comprises fixed block and set bolt; Described fixed block is fixedly connected with the led display unit casing, and is provided with the through hole suitable with described set bolt on it; Be provided with fixing threaded hole on the described main framing; After the fixed installation of led display unit casing and described erecting device, after described set bolt passes described through hole, be threaded with main framing by described fixing threaded hole and fix.
The beneficial effects of the utility model are:
Owing to led display unit casing erecting device of the present utility model has been arranged, and this erecting device comprises: main framing, limited post and roller; Can very easily the led display unit casing be mounted to the grandstand forward position by it, and guarantee installation accuracy, guarantee display quality; If in the time of the led display unit casing need to being taken off because of great maintenance, also can very easily whole casing be proposed.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the front view of led display unit casing in the utility model embodiment;
Fig. 2 is the upward view of led display unit casing in the utility model embodiment;
Fig. 3 is the left view of led display unit casing in the utility model embodiment;
Fig. 4 is the stereographic map of led display unit casing in the utility model embodiment;
Fig. 5 is the erecting device of the utility model embodiment led display unit casing and the perspective view after the assembling of led display unit casing;
Fig. 6 is the erecting device of the utility model embodiment led display unit casing and the perspective view before the assembling of led display unit casing.
Fig. 7 is the exploded view of the erecting device of the utility model embodiment led display unit casing;
Fig. 8 is the perspective view that main framing and limited post are assembled together in the utility model embodiment;
Fig. 9 is the perspective view of roller in the utility model embodiment;
Figure 10 is the perspective view of positioning rotating shaft in the utility model embodiment;
Embodiment
A kind of led display unit casing that this embodiment provides as shown in Figures 1 to 4, comprising: front case 1 and rear cabinet 2; Show that module 11 is arranged on the front surface of front case 1; Described rear cabinet 2 is arranged on front case 1 rear upper lateral part; The (not shown)s such as described power supply, fan, control card are arranged in the rear cabinet 2.
The led display unit casing of this embodiment, owing to being divided into, casing has normal size but the front case 1 of thinner thickness, and the rear cabinet 2 that is fixedly installed on top, front case 1 rear portion, and the parts such as power supply, fan, control card are arranged in the rear cabinet 2, thereby compare existing square-folded, led display unit casing that thickness is consistent, more be fit to be installed in the grandstand forward position.
In the preferred technical scheme, described rear cabinet 2 upper surfaces are provided with back box lid 21.The back box lid 21 convenient rear cabinets 2 of opening from the top, and owing to the critical pieces such as power supply, fan, control card all are arranged in the rear cabinet 2, general needs when therefore breaking down, back box lid 21 is opened at grandstand edge, court by the maintenance personal, can change, the maintenance job such as inspection, greatly improved maintainability, reduced maintenance cost, simultaneously maintenance personal's security has been significantly improved.
In the preferred technical scheme, described front case 1 has bonnet 10, rear cabinet 2 is fixedly installed on described bonnet 10 tops, and the upper end of bonnet 10 is connected by hinge 26 with front case 1 top, and the base of bonnet 10 is connected with dual-side by screw and is connected with front case 1, thereby cooperates described hinge 26 can realize rotary closing.In addition, the surface of contact between front case 1 and the bonnet 10 is very smooth and be provided with waterproof adhesive tape, and good water resistance is arranged.
In the further preferred technical scheme, described front case 1 top is provided with handle 22.Install or dismounting led display unit casing, when needing that perhaps whole led display unit casing taken off maintenance, can use handle 22.Such as when needing repairing cell module 11 and cable thereof, then need by handle 22 whole led display unit casing to be proposed, then the screw on the lower bonnet 10 of dismounting, open 10 pairs of bonnets before case 1 inside keep in repair, this operation can be finished in the grandstand forward position by operating personnel.
Further in the preferred technical scheme, described handle 22 is rotatable handle.Can open it when needing to use, it can be kept flat the top of being close to front case 1 when not using.
In the preferred technical scheme, described rear cabinet 2 bottoms are provided with reference column 24, location during convenient the installation, thus reach the flatness of shielding body front end display surface, realize preferably display effect.
In the preferred technical scheme, described demonstration module 11 is row or two row.By showing that module is controlled to be row or two row (comprehensive casing cost consideration, the structure that is set to 2 row, 3 rows as shown in the figure is optimum), to reach the weight that reduces casing and the purpose of width, thereby when needs propose the casing maintenance, because box weight is less, so that maintenance operation is lighter, safety; On the other hand, reduce the casing width, when Arc Stand is used, can make spliced display surface more near arc, reached better display effect.
In the preferred technical scheme, described rear cabinet 2 rear side two ends respectively are provided with a socket mount pad 23, and described socket mount pad 23 is provided with power socket 232 and/or signal seat 231.Signal seat 231, power socket 232 all are installed on the socket mount pad 23 of indent, and socket mount pad 23 is arranged on the two ends of rear cabinet 2, can hide connection cable between the casing, shorten the length of cable cascade, reduce cost, beautify outward appearance.
In the preferred technical scheme, described front case and rear cabinet are connected, and are provided with air inlet bottom the front case, and the rear cabinet bottom is provided with air outlet.In the further preferred technical scheme, described air inlet and/or air outlet are provided with shutter.Thereby can realize ventilation, the requirement of shelter higher to led display unit casing integral body, reach completely outdoor installation requirement, can greatly simplify safeguard structure simultaneously, reduce processing cost.
The erecting device of a kind of led display unit casing that this embodiment provides such as Fig. 5 are to shown in Figure 8, and it is used for aforementioned led display unit casing is mounted to the grandstand forward position.The erecting device of described led display unit casing comprises: main framing 40, limited post 41 and roller 42; Described main framing 40 is framed structure, and its at least one side is used for being fixedly connected with the grandstand forward position; Described limited post 41 has two at least, vertical parallel both sides that are fixedly installed on the rear side surface of main framing 40, and be provided with in the limited post 41 and can hold described roller 42 stopper slot 410 of scroll-up/down within it; Described roller 42 has four at least, rotatably is arranged on the dorsal part of described led display unit casing, and per two be one group, two groups respectively symmetry be positioned at described stopper slot 410.
Owing to led display unit casing erecting device of the present utility model has been arranged, and this erecting device comprises: main framing 40, limited post 41 and roller 42; Can very easily the led display unit casing be mounted to the grandstand forward position by it, and guarantee installation accuracy, guarantee display quality; If in the time of the led display unit casing need to being taken off because of great maintenance, also can very easily whole casing be proposed.
As shown in Figure 9, described roller 42 comprises: wheel 420, wheel shaft 421, adjusting screw(rod) 422 and setting nut 423 in the preferred technical scheme; Described wheel 420 has two, rotatably is located in respectively the two ends of described wheel shaft 421; One end of described adjusting screw(rod) 422 is fixedly connected with the middle part of wheel shaft 421, and the other end of adjusting screw(rod) 422 is used for being fixedly connected with the led display unit casing, and the axis of adjusting screw(rod) 422 is vertical with the axis of wheel shaft 421; Be threaded for regulating the described setting nut 423 of wheel 420 with led display unit casing distance, being located on the described adjusting screw(rod) 422 and with adjusting screw(rod) 422.First setting nut 423 is fallen back on the root of screw thread during adjusting screw(rod) 422 in assembling, the degree of depth that screw thread that can regulating and controlling screw rod 422 is screwed into then in the rear surface of front case 1 fastening adjustment nut 423, can reach the purpose of regulating wheel 420 and casing distance.
In the preferred technical scheme, also be provided with limited block 411 in the described limited post 41.For the wheel 420 that makes things convenient for roller 42 enters in the limited post 41, the interior empty of limited post 41 can be larger than the diameter of wheel 420, stays a little fit-up gaps.When the casing piece is descending when putting in place, retrain the position of wheel 420 in limited post 41 by limited block 411, thereby guarantee the flatness of module displays face between casing.
In the preferred technical scheme, described stopper slot 410 upper ends are open, and lower end closed.Stopper slot 410 upper end openings are in order to guarantee that adjusting screw(rod) 422 can put into stopper slot 41 from top to bottom.The lower end does not have open necessity, and sealing can be strengthened the intensity of stopper slot on the contrary, prevents distortion.
In the preferred technical scheme, the erecting device of described led display unit casing also comprises clamping mechanism; Described clamping mechanism comprises: guide groove 7, positioning rotating shaft 62 and support unit 61; Described guide groove 7 vertically is fixedly installed on led display unit casing dorsal part; Described support unit 61 is fixedly installed in the described guide groove 7; Described positioning rotating shaft 62 rotatably is arranged on the main framing 40, and it has by position and support level, rotational positioning rotating shaft 62 is to by when position, positioning rotating shaft 62 1 ends can be in guide groove 7 interior slips and by described support unit 61 places, rotational positioning rotating shaft 62 is during to support level, and positioning rotating shaft 62 1 ends cannot pass through described support unit 61 places.Owing to be provided with clamping mechanism, when the led display unit casing being installed or proposing the led display unit casing, do not need once to finish, the rest that can stop midway, this structure is particularly important for heavier led display unit casing.
In the further preferred technical scheme, described positioning rotating shaft 62 comprises as shown in figure 10: axis body 621, axle head 623 and handle 622; Described axle head 623 is fixedly connected with axis body 621 front ends, and both axis quadratures; Described handle 622 is fixedly connected with axis body 621 rear portions; Make axis body 621 around the rotation of its axis by handle 622, can be so that described axis body 623 levels, this moment, positioning rotating shaft 62 was support level; Make axis body 621 around its axis rotation by handle 622, can be so that described axis body 623 to be vertical, this moment, positioning rotating shaft 62 was for passing through the position.Can operate very easily positioning rotating shaft 62 by handle 622 and between two kinds of working positions, switch, and this is simple and reliable for structure.
Further in the preferred technical scheme, described positioning rotating shaft 62 also comprises screens breach 624; Described clamping mechanism also comprises bolt 63; Described screens breach 624 is arranged on the described axis body 621; Described bolt 63 rotatably is arranged on the main framing 40, and rotates this bolt 63 its end is held out against at described locating notch 624 places.This structure can lock in place rotating shaft 62, prevents positioning rotating shaft 62 improper rotations, guarantees to install or extract in the process of led display unit casing and can normally pause.
In the further preferred technical scheme, described support unit 61 comprises: back-up block 611, back-up block installation shaft 612 and back-moving spring 613 again; Described back-up block installation shaft 612 is horizontally set in the guide groove 7, and correspondence position has support window 71 on the guide groove 7; Described back-up block 611 1 ends are located on the described back-up block installation shaft 612, and can be around described back-up block installation shaft 612 rotations; Described back-moving spring 613 acts between guide groove 7 inwalls and the back-up block 611, makes an end maintenance level of back-up block 611 and upper along contacting with described support window 71.The effect of support unit 61: when carrying maintenance or maintenance personal in maintenance on the casing, pause suddenly (can not exert all one's strength continuously during upper suitcase body), can guarantee that casing is parked on certain position, as long as this moment, the axle head 623 of positioning rotating shaft 6 front ends was level (taking the least important seat at a square table), casing just can not slide into down again the bottom of limited post 41, and purpose is laborsaving in order to keep in repair.And after the casing installation was complete, as long as bolt 63 is not dismantled, the axle head 623 of positioning rotating shaft 6 front ends namely was defined as level (taking the least important seat at a square table), can prevent that again casing from artificially deliberately at will being put forward.
In the further preferred technical scheme, the erecting device of described led display unit casing also comprises fixed sturcture 5; Described fixed sturcture 5 has two covers, is separately positioned on both sides, described main framing 40 top.After the led display unit casing is in place, can be by described fixed sturcture 5 locking led display unit casings, so that install more solid and reliable.
Further in the preferred technical scheme, described fixed sturcture 5 comprises fixed block 50 and set bolt 51; Described fixed block 50 is fixedly connected with the led display unit casing, and is provided with the through hole suitable with described set bolt 51 on it; Be provided with fixing threaded hole 405 on the described main framing 40, and with the suitable pilot hole 403 of described reference column 24; After the fixed installation of led display unit casing and described erecting device, after described set bolt 51 passes described through hole, be threaded with main framing 40 by described fixing threaded hole 405 and fix.At this moment, reference column 24 also just is positioned at pilot hole 403.
As shown in Figure 6, also offer on the main framing 40 be used to the handle that holds handle 622 motions and dodge groove 402, be used for arranging the positioning bolt hole 404 of described bolt 63, be used for arranging the positioning rotating shaft mounting hole 401 of described positioning rotating shaft 62.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.

Claims (10)

1. the erecting device of a led display unit casing, it is used for the led display unit casing is mounted to the grandstand forward position, it is characterized in that the erecting device of described led display unit casing comprises: main framing, limited post and roller; Described main framing is framed structure, and its at least one side is used for being fixedly connected with the grandstand forward position; Described limited post has two at least, a vertical parallel side that is fixedly installed on main framing, and be provided with in the limited post and can hold the described roller stopper slot of scroll-up/down within it; Described roller has two at least, rotatably is arranged on the dorsal part of described led display unit casing, and lays respectively in two spacing stopper slots of leaning on separately.
2. the erecting device of a kind of led display unit casing as claimed in claim 1 is characterized in that, described roller comprises: wheel, wheel shaft, adjusting screw(rod) and setting nut; Described wheel has two, rotatably is located in respectively the two ends of described wheel shaft; One end of described adjusting screw(rod) is fixedly connected with the middle part of wheel shaft, and the other end of adjusting screw(rod) is used for being fixedly connected with the led display unit casing, and the axis of adjusting screw(rod) is vertical with the axis of wheel shaft; Be used for to regulate the described setting nut of wheel and led display unit casing distance, be located on the described adjusting screw(rod) and with adjusting screw(rod) and be threaded.
3. the erecting device of a kind of led display unit casing as claimed in claim 1 is characterized in that, also is provided with limited block in the described limited post.
4. the erecting device of a kind of led display unit casing as claimed in claim 1 is characterized in that, described stopper slot upper end is open, and lower end closed.
5. such as the erecting device of the described a kind of led display unit casing of any one in the claim 1 to 4, it is characterized in that the erecting device of described led display unit casing also comprises clamping mechanism; Described clamping mechanism comprises: guide groove, positioning rotating shaft and support unit; Described guide groove vertically is fixedly installed on led display unit casing dorsal part; Described support unit is fixedly installed in the described guide groove; Described positioning rotating shaft rotatably is arranged on the main framing, and it has by position and support level, when the rotational positioning rotating shaft is extremely passed through the position, positioning rotating shaft one end can slide in guide groove and pass through described support unit place, the rotational positioning rotating shaft is during to support level, and positioning rotating shaft one end cannot pass through described support unit place.
6. the erecting device of a kind of led display unit casing as claimed in claim 5 is characterized in that, described positioning rotating shaft comprises: axis body, axle head and handle; Described axle head is fixedly connected with the axis body front end, and both axis quadratures; Described handle is fixedly connected with the axis body rear portion; Make axis body around the rotation of its axis by handle, can be so that described axis body level, this moment, positioning rotating shaft was support level; Make axis body around its axis rotation by handle, can be so that described axis body to be vertical, this moment, positioning rotating shaft was for passing through the position.
7. the erecting device of a kind of led display unit casing as claimed in claim 6 is characterized in that, described positioning rotating shaft comprises the screens breach; Described clamping mechanism also comprises bolt; Described screens breach is arranged on the described axis body; Described bolt rotatably is arranged on the main framing, and rotates this bolt its end is held out against at described locating notch place.
8. the erecting device of a kind of led display unit casing as claimed in claim 5 is characterized in that, described support unit comprises: back-up block, back-up block installation shaft and back-moving spring; Described back-up block installation shaft is horizontally set in the guide groove, and correspondence position has the support window on the guide groove; Described back-up block one end is located on the described back-up block installation shaft, and can be around described back-up block installation shaft rotation; Described action of reset spring makes an end maintenance level of back-up block and upper along contacting with described support window between guide groove and back-up block.
9. such as the erecting device of the described a kind of led display unit casing of any one in the claim 1 to 4, it is characterized in that the erecting device of described led display unit casing also comprises fixed sturcture; Described fixed sturcture has two covers, is separately positioned on both sides, described main framing top.
10. the erecting device of a kind of led display unit casing as claimed in claim 9 is characterized in that, described fixed sturcture comprises fixed block and set bolt; Described fixed block is fixedly connected with the led display unit casing, and is provided with the through hole suitable with described set bolt on it; Be provided with fixing threaded hole on the described main framing; After the fixed installation of led display unit casing and described erecting device, after described set bolt passes described through hole, be threaded with main framing by described fixing threaded hole and fix.
CN 201220217589 2012-05-15 2012-05-15 Mounting equipment of LED display unit box Expired - Fee Related CN202650454U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220217589 CN202650454U (en) 2012-05-15 2012-05-15 Mounting equipment of LED display unit box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220217589 CN202650454U (en) 2012-05-15 2012-05-15 Mounting equipment of LED display unit box

Publications (1)

Publication Number Publication Date
CN202650454U true CN202650454U (en) 2013-01-02

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Application Number Title Priority Date Filing Date
CN 201220217589 Expired - Fee Related CN202650454U (en) 2012-05-15 2012-05-15 Mounting equipment of LED display unit box

Country Status (1)

Country Link
CN (1) CN202650454U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302139A (en) * 2014-10-31 2015-01-21 成都技高科技有限公司 Power grid data concentrator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302139A (en) * 2014-10-31 2015-01-21 成都技高科技有限公司 Power grid data concentrator
CN104302139B (en) * 2014-10-31 2017-02-01 成都技高科技有限公司 Power grid data concentrator

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130102

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CF01 Termination of patent right due to non-payment of annual fee