CN110728906B

CN110728906B - Outdoor large screen with adjustable display mode

Info

Publication number: CN110728906B
Application number: CN201911197759.2A
Authority: CN
Inventors: 林志锋; 李建花; 李建福
Original assignee: Fuzhou Yonghong Jiuzhou Electronic Technology Co ltd
Current assignee: Heyuan Lianteng Industrial Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2021-06-04
Anticipated expiration: 2039-11-29
Also published as: CN110728906A

Abstract

The invention relates to the field of display equipment manufacturing and control, in particular to design of an outdoor large screen. The invention is realized by the following technical scheme: the utility model provides an outdoor large screen of display mode adjustable, contains dustcoat, module installing frame and main mount pad, the louvre has been seted up on the main mount pad, main mount pad contains back plate and curb plate, the louvre contains to be seted up main radiating hole on the back plate, the dustcoat is connected with the clean assembly of cover screen, the clean assembly of cover screen contains and removes frame and a plurality of regulation veneer, every it all is connected with the removal subassembly to adjust the veneer, remove the subassembly with remove the frame and remove the connection. The invention aims to provide an outdoor large screen with an adjustable display mode, which can switch between a normal display mode and a dustproof closed mode and enhance the definition and the display effect of the display screen.

Description

Outdoor large screen with adjustable display mode

Technical Field

The invention relates to the field of display equipment manufacturing and control, in particular to design of an outdoor large screen.

Background

The display screen adopts a display gray control technology, a modular design and a large-scale integrated circuit design, is used as display equipment for playing and outputting, and is widely applied to various fields. Among them, with the development of cities and the maturity of information technologies, outdoor display screens, especially outdoor display screens with large sizes are increasingly common.

Since the outdoor display screen is often installed outdoors in a city, the surface of the outdoor display screen is prone to dust accumulation. A large amount of dust not only influences the use of each electronic component in the display screen and reduces the service life of the display screen, but also covers the external panel of the display screen and influences the definition and color effect of the display screen. If the display screen needs to be cleaned manually at regular intervals, the risk coefficient of aerial work of personnel is high due to the large area and the high installation position of the display screen, and the cleaning is inconvenient.

If the chinese patent document with the publication number CN109584715 discloses an outdoor large screen with adjustable display mode, which substantially adds a dust cover on the outer side of the display screen, but such a dust-proof manner is simple, and only the dust-proof performance inside the device is improved, and the dust cover is still deposited on the outer side of the dust cover, which affects the display effect of the outer screen of the display screen.

Disclosure of Invention

The invention aims to provide an outdoor large screen with an adjustable display mode, which can switch between a normal display mode and a dustproof closed mode and enhance the definition and the display effect of the display screen.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides an outdoor large screen of display mode adjustable, contains dustcoat, module installing frame and main mount pad, the louvre has been seted up on the main mount pad, main mount pad contains back plate and curb plate, the louvre contains to be seted up main radiating hole on the back plate, the dustcoat is connected with the clean assembly of cover screen, the clean assembly of cover screen contains and removes frame and a plurality of regulation veneer, every it all is connected with the removal subassembly to adjust the veneer, remove the subassembly with remove the frame and remove the connection.

Preferably, each adjusting single plate comprises a plate body and a rotating shaft connected with the plate body, the rotating shaft is connected with the moving assembly, and the adjusting single plates are connected through a connecting rope.

Preferably, each of the plate bodies is provided with a wiping block for wiping the outer cover.

Preferably, the wiping device further comprises a buffer ball rotatably connected to the plate body, and the height value of the buffer ball protruding out of the plate body is lower than the height value of the wiping block protruding out of the plate body.

Preferably, the plurality of buffer balls are respectively mounted at four corners of the plate body, and the plurality of wiping blocks are mounted in parallel at the middle of the plate body.

Preferably, the moving assembly includes a coupling block coupled to the rotation shaft and a moving wheel coupled to the coupling block.

Preferably, the present invention further comprises a drawing member for adjusting a distance between the moving frame and the housing.

In the present invention, it is preferable that the moving frame is provided with a water cleaning device for spraying water to the housing.

Preferably, the water cleaning device comprises a transverse plate connected with the movable frame, a water storage tank connected to the transverse plate, and a plurality of water outlet units connected with the transverse plate, wherein each water outlet unit is connected with the water storage tank through a water pipe.

Preferably, the outlet unit includes an extension plate connected to the horizontal plate, a rotary ball connected to the extension plate, and an outlet pipe connected to the rotary ball.

Preferably, the main mounting seat is further slidably connected with a hole cleaning device for penetrating the main heat dissipation hole to clean the main heat dissipation hole.

Preferably, the hole cleaning device comprises a base plate, a sliding device connected with the base plate and capable of sliding on the main mounting seat, and a connecting pushing piece connected with the main mounting seat and used for driving the basic sliding, wherein the sliding device comprises a wheel protection frame connected with the base plate and a wheel body mounted on the wheel protection frame; the hole cleaning device also comprises a hole entering piece used for entering the main heat dissipation hole.

In a preferred embodiment of the present invention, the inlet member includes a mounting disk having a disk shape and a brush body connected to the mounting disk in a bundle shape.

Preferably, the cleaning device further comprises a cleaning frame, wherein the access hole piece is mounted on the cleaning frame, and the cleaning frame is connected with the substrate through a flexible connecting device.

Preferably, the flexible connecting device comprises a transfer member and auxiliary connecting members located at two sides of the transfer member, and the cleaning frame is rotatably connected with the base plate through the transfer member.

Preferably, the transfer member includes a hinge plate connected to the base plate and a rotating frame connected to the cleaning frame, and the rotating frame is connected to the hinge plate.

Preferably, the auxiliary connecting member includes an extending portion, the base plate is provided with a side engaging groove, and the extending portion extends into the side engaging groove.

Preferably, the base plate is provided with a plurality of rectangular grooves, the cleaning frame comprises a plurality of longitudinal strips which are parallel to each other, a groove gap is formed between every two adjacent longitudinal strips, and the inlet hole piece is installed on the longitudinal strips.

Preferably, the plurality of main heat dissipation holes are arranged on the rear plate in a rectangular array.

Preferably, the dustproof adjusting device comprises a sliding rail mounted on the rear plate, a sliding plate connected with the sliding rail in a sliding manner, and a transverse push rod connected with the main mounting seat and driving the sliding plate to slide, wherein the sliding plate comprises a blocking plate and an avoiding groove.

Preferably, the number of the main heat dissipation holes is multiple, the main heat dissipation holes are arranged in a rectangular array, the blocking plates and the avoidance grooves extend in the vertical direction and are arranged at intervals in the horizontal direction, and the pushing direction of the transverse push rod is the horizontal transverse direction.

Preferably, the side end of the sliding plate is provided with a limiting buffer member, one side of the limiting buffer member is connected with the sliding plate, and the limiting buffer member comprises a contact body and arc-shaped side deformation grooves which are formed in two sides of the contact body.

Preferably, the upper end of the main mounting seat is provided with a heat dissipation micropore, the upper end of the main mounting seat is connected with a shielding piece for shielding the heat dissipation micropore, and the shielding piece comprises a transverse baffle and a connecting rod for connecting the transverse baffle and the main mounting seat.

Preferably, the aperture of the heat dissipation micro-hole is smaller than that of the main heat dissipation hole, the upper end surface of the main mounting seat is an upper inclined surface, the height of the upper inclined surface is reduced in the direction away from the module mounting frame, and the heat dissipation micro-hole is mounted on the upper inclined surface.

Preferably, the outer surface of the upper inclined plane is a guide arc track in a circular arc shape.

Preferably, the main mounting seat is internally provided with a blowing device, and the blowing device comprises a fan, an air pipe and a dust blowing device connected with the air pipe.

Preferably, the dust blowing device comprises a bottom plate connected with the main mounting seat, an extension tube which is installed on the bottom plate and can extend and retract in the vertical direction, and a blowing head installed on the extension tube, wherein the extension tube penetrates through the upper end face of the main mounting seat.

Preferably, the number of the blowing heads is two, the blowing heads are located in the middle of the main mounting base, and one side of each blowing head, which is far away from the central axis direction of the main mounting base, is provided with a plurality of high-wind micropores.

In conclusion, the invention has the following beneficial effects:

1. the heat dissipation and dustproof functions are flexible and adjustable.

2. The shield increases safety and cleanliness over the device.

3. The double heat dissipation areas and the different pore diameters are designed to increase the cleanness inside the equipment.

4. The inclination, the circular arc and the blowing design of the upper inclined plate further increase the cleanness of the equipment and are not easy to accumulate dust.

5. The hole cleaning device can automatically clean the main radiating holes.

6. The angle of each regulation veneer can be adjusted through connecting the rope, also can change the position of each regulation veneer through removing the subassembly to realize the switching of display screen display mode and closed mode, neither shelter from the field of vision, also increase the dirt proofness.

7. The existence of the adjusting single plate is matched with the pulling-close piece and the moving assembly, so that the surface of the outer cover is wiped.

Description of the drawings:

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is a schematic view of a main mount;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a front view of FIG. 2;

fig. 5 is an enlarged schematic view at B in fig. 4;

FIG. 6 is a schematic view of a hole cleaning apparatus;

FIG. 7 is a schematic view of FIG. 6 in another orientation;

FIG. 8 is a schematic view of the housing and shield cleaning assembly;

fig. 9 is an enlarged schematic view at C in fig. 8.

In the figure:

1. a housing, 2, a module mounting frame, 3, a main mounting seat, 31, a rear plate, 32, a side plate, 33, an upper inclined plate, 331, a guide arc channel, 41, a main heat dissipation hole, 42, a heat dissipation micropore, 5, a shielding piece, 51, a transverse baffle plate, 52, a connecting rod, 6, a blowing device, a fan, an air pipe, 61, a dust blowing device, 611, a bottom plate, 612, a telescopic pipe, 613, a blowing head, 6131, a high-wind micropore, 7, a dust control device, 71, a sliding rail, 72, a sliding plate, 721, a blocking plate, 722, an avoiding groove, 73, a transverse push rod, 74, a limiting buffer piece, 741, a contact body, 742, a side deformation groove, 8, a hole cleaning device, 81, a base plate, 811, a rectangular groove, 812, a side matching groove, 82, a connecting pushing piece, 83, a sliding device, 831, a wheel body, 832, a wheel frame, 84, a cleaning frame, 841, a longitudinal strip, 85, a flexible connecting device, 851, 8511. the device comprises a stretching part, 852, a middle rotating part, 8521, a hinged disc, 8522, a rotating frame, 86, an inlet part, 861, a mounting disc, 862, a brush body, 9, a cover screen cleaning assembly, 91, a moving frame, 92, a drawing part, 93, a water cleaning device, 931, a transverse plate, 932, a water storage tank, 933, a water outlet single piece, 9331, an extension plate, 9332, a rotating ball, 9333, a water outlet pipe, 94, an adjusting single plate, 941, a plate body, 942, a rotating shaft, 943, a wiping block, 944, a buffer ball, 95, a connecting rope, 96, a moving component, 961, a connecting shaft block, 962 and a moving wheel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Embodiment 1, as shown in fig. 1, the whole display screen comprises three parts, namely, a housing 1, a module mounting frame 2 and a main mounting base 3, as in the prior art. Wherein module installing frame 3 is main electrical installation part, and each display module assembly, circuit board and main control module group are all installed at module installing frame 2. The housing 1, the module mounting frame 2 and the main mount 3 are connected to each other. The housing 1 and the module mounting frame 2 are the prior art, and the technical solution is not modified greatly, so the housing 1 and the module mounting frame 2 and the electronic components thereon are not described again here.

The main mounting 3 of the display screen is shown in fig. 2. The main mounting seat 3 and the outer cover 1 form a containing cavity for mounting each component. The main mount 3 can be considered as the rear half of the receiving cavity. The main mount 3 includes a rear plate 31, a side plate 32 on the side, and an upper inclined plate 33 on the upper side.

Each electronic component generates a large amount of heat during use, and the heat is discharged from the heat dissipation holes. The scheme adopts the technical scheme that the back is main and auxiliary, and the main adjustment is upward blowing. Specifically, a plurality of main heat dissipation holes 41 are arranged on the back plate 31, and are arranged in a rectangular array for main heat dissipation and ventilation. The upper inclined plate 33 is provided with heat dissipation micro-holes 42, and the diameter of the heat dissipation micro-holes 42 is smaller than that of the main heat dissipation holes 41, so as to supplement and assist heat dissipation.

In the present embodiment, the heat dissipation area of the main heat dissipation hole 41 is flexibly adjustable. As shown in detail in fig. 4. The dust-proof adjusting device 7 is included, the slide rail 71 is transversely and fixedly connected on the main mounting base 3, and the sliding plate 72 transversely slides on the slide rail 71. The sliding power of the sliding plate 72 comes from the cross push rod 73. The specific structure and control manner of the transverse pushing rod 73 are the content of the prior art, and for example, it may be a pneumatic rod, or a micro motor driving a gear rack, as long as the driving force in the horizontal direction is provided. The control may use wireless communication control.

The slider 72 includes a blocking plate 721 and an avoiding groove 722, and the blocking plate 721 and the avoiding groove 722 extend in the vertical direction and are alternately arranged adjacent to each other. When the slide plate 72 slides, the blocking plate 721 completely blocks the row of the main heat dissipation holes 41, and the entire rear plate 31 is in the dust-tight mode. When the sliding plate 72 continues to slide, the blocking plate 721 does not block the heat dissipation holes 41, i.e. the heat dissipation holes 41 are aligned with the escape slots 722, and then the entire rear plate 31 is in the heat dissipation mode. In addition, since the sliding plate 72 slides linearly, the exposed area of the main heat dissipation hole 41 is flexibly adjustable, i.e., the degree of heat dissipation and dust prevention of the entire rear plate 31 is flexibly adjustable.

When the external temperature is not high but the dust is more, more points covered by the main heat dissipation holes 41 can be made to be completely closed. When the external temperature is higher and heat dissipation is more needed, the reverse operation is performed.

In this embodiment, a limit bumper 74 is installed at a side end of the sliding plate 72, i.e., a left side of the sliding plate 72 in fig. 4 and fig. 5. The limit bumper 74 can be made of an elastic material such as rubber, and includes a contact body 741, which has left and right curved inward notches with side deformation slots 742. The limiting bumper 74 has two functions: on the one hand, the sliding of the slide plate 72 is cushioned against collision, and the energy absorption by deformation of the side deformation groove 742 absorbs the energy of collision of the slide plate 72 against the side plate 32. On the other hand, the position is restricted according to the width of the restricting bumper 74 so that the main heat dissipation hole 41 is not covered at all in this state and is in the maximum heat dissipation mode.

The accommodating cavity is also internally provided with a blower device 6, the blower device 6 comprises a fan and an air pipe (not shown in the figure), the structure of the part is the content of the prior art, the description is omitted, and the blower device 6 is used for accelerating the air flow and increasing the heat dissipation function. In the present case, the blower 6 is newly designed. As shown in fig. 2 and 3, the upper inclined plate 33 is inclined to be highly inclined downward in a direction away from the module mounting frame 2. This arrangement allows some dust and debris to roll off naturally, and from a direction away from the screen, due to the influence of gravity. In the scheme, arc treatment is adopted. Namely, the outer surface of the upper inclined plate 33 is a guide arc path 331, and the arc design has no edge angle, thereby avoiding dust accumulation at the edge angle. Further improving the cleaning performance.

The heat dissipation micro-holes 42 are opened upward, so that the size of the opening is small and a filter screen or the like can be installed therein to prevent dirt in the vertical direction from directly falling into the inside of the whole apparatus.

A shielding piece 5 is further arranged above the upper inclined plate 33, and the shielding piece comprises a connecting rod 52 and a transverse baffle 51, so as to further protect and shield the heat dissipation micropores 42.

A dust blowing device 61 is installed in the accommodating chamber. The dust blowing device 61 is part of the blowing device 6. As shown in fig. 4, the telescopic device comprises a bottom plate 611 fixedly connected to the main mounting base 3, and a telescopic tube 612 that is telescopic in the vertical direction is mounted on the bottom plate 611, and the specific structure and the telescopic driving and controlling manner thereof may also be mature products in the prior art, which are not described herein again. A blowing head 613 is arranged at the upper end of the telescopic rod 612, and the blowing head 613 is connected with a blower through an air pipe.

In a normal state, the whole blowing head 613 descends, so that the appearance of the whole upper inclined plate 33 is integrated, and when the air needs to be blown, the telescopic rod 612 drives the whole blowing head 613 to extend out, so as to perform cleaning and blowing operation.

As shown in fig. 2 and 3, the number of the telescopic rod 612 and the blowing head 613 is two, and the telescopic rod 612 and the blowing head 613 are installed in opposite directions in the middle, that is, the blowing direction of the blowing head 613 is towards two sides. Each blowing head 613 is provided with a plurality of high-wind micro-holes 6131 which play a role in accelerating the air flow, and the air flow is blown out from the integral micro-holes 6131 to the side end and blows off the accumulated dust on the outer surface of the upper inclined plate 33 outwards, thereby further increasing the cleanness of the outside of the equipment and the inside of the equipment.

In this case, the heat dissipation micro-holes 42 are cleaned by the blowing design, and the main heat dissipation holes 41 are cleaned by physical dredging. As shown in particular in fig. 6 and 7. Comprises a base plate 81 on which a connecting pushing member 82 is provided. One end of the connecting pushing member 82 is connected to the main mount 3, and the other end is connected to the base plate 81. It is a telescopic structure so as to push the entire base plate 81 closer to or away from the rear plate 31. The specific telescopic structure and control manner of the connecting pushing member 82 are also the content of the prior art, and are not described in detail.

A cleaning frame 84 is attached to the base plate 81, and a hole-inserting member 86 is provided on the cleaning frame 84. The inlet member 86 includes a mounting disk 861 and a brush body 862 mounted thereon. When the main radiating hole 41 needs to be cleaned, the system control connecting pushing piece 82 extends out, the brush body 852 extends into the main radiating hole 41 to perform physical contact wiping, and therefore cleaning and dust removal are achieved.

In order to further enhance the portability of the process, the substrate 81 is provided with a plurality of rectangular grooves 811, and the cleaning frame 84 also adopts a multi-row hollow design, i.e. comprises a plurality of parallel longitudinal strips 841, and the adjacent longitudinal strips 841 are provided with a groove on the plate to form a gap. And each longitudinal strip 841 has a plurality of inlet members 86 mounted thereon. The number, position and arrangement of the hole-entering pieces 86 are matched with the main heat dissipation holes 42 on the back plate 31, and correspond to one another.

In this case, the substrate 81 and the cleaning frame 84 are connected by means of a flexible connecting device 85. The effect of this is that if the board is slightly deformed or wrong due to installation error or long-term use outdoors, the hole-entering member 86 cannot enter each main heat-dissipating hole 41 well when the whole hole-cleaning device 8 is pushed to clean the holes, which affects the hole-cleaning effect and damages each component when pushing against each component.

In the present case, the flexible connection device 85 allows a slight and small-range displacement between the substrate 81 and the cleaning frame 84 during the pushing and cleaning process, thereby increasing the fault tolerance.

Specifically, a rotating frame 8522 connected with the cleaning frame 84 and a hinged disc 8521 connected with the base plate 81 are included, and the two are hinged, so that the base plate 81 and the cleaning frame 84 rotate. And an auxiliary connecting member 851 having one end connected to the cleaning frame 84 and the other end provided with an insertion part 8511. A side engagement groove 812 is opened at a side end of the base plate 81, and the protrusion 8511 is fitted into the side engagement groove 812. The size of the slot of the side engagement groove 812 may be slightly larger than the protrusion 8511, which gives the protrusion 8511 a range of movement. Or, it is stated that the protrusion 8511 is an axis of movement and the side engagement slot 812 is slotted in a curved direction to also allow the protrusion 8511 to move within the slot. The auxiliary connecting member 851 has the second function, that is, the auxiliary connecting member serves as an auxiliary connection of the transfer member 852 and is installed at both sides to further enhance the fixing degree of the cleaning frame 84; another function is to provide a suitable range of movement for the cleaning rack 84, as with the mid-turn 852, and to limit the range of movement depending on the manner in which the side engagement slots 812 are slotted.

As shown in fig. 8 and 9, a cover screen cleaning assembly 9 is installed in a direction in which the cover 1 is away from the module mounting frame 2, and functions to clean the outermost side of the display screen, i.e., the outer surface of the cover 1. Dirt and dust on the outer surface of the outer cover 1 are removed, and the definition and the display effect of the whole display screen are improved.

Specifically, the movable frame 91 is connected to the housing 1 or the module mounting frame 2 or the main mount 3 via the pulling-up member 92. The drawing member 92 has a telescopic structure, and the specific structure thereof can be a gas rod, a gear rack, a telescopic tube and other parts in the prior art, and the drawing member 92 is used for adjusting the distance value between the whole moving frame 91 and the outer cover 1 to draw close or far away.

A plurality of single adjustment plates 94 that can move left and right are connected to the movable frame 91, each single adjustment plate 94 includes a rotation shaft 942 and plate bodies 941, and adjacent plate bodies 941 are connected to each other by a connecting rope 95. The user performs rotation of all the plate bodies 941 by pulling the connection cord 95. When for example evening at ordinary times, outdoor display screen inoperative time, then can the operation connect rope 95 to let all plate bodies 941 be similar to the shutter and almost be parallel with dustcoat 1's surface, thereby all plate bodies 941 play sheltering from and guard action, promote the dirt proofness to dustcoat 1 together.

In this position, the housing 1 can also be cleaned. Specifically, a water cleaning device 93 is provided on the upper half of the moving frame 91. As shown in fig. 9, the water storage tank 932 is attached to a horizontal plate 931, and the horizontal plate 931 is attached to the moving frame 91. The horizontal plate 931 is further connected to a plurality of water outlet singles 933. Each water outlet unit 933 is communicated with the water storage tank 932 through a water pipe.

The water spraying mode of the water outlet unit can be realized by components in the prior art such as a valve, and the like, which are not described herein. In this embodiment, the water outlet direction can be flexibly adjusted. A water outlet pipe 9333 is connected to the rotary ball 9332, and the rotary ball 9332 can rotate on the extension plate 9331 in all directions, so that the water outlet direction can be adjusted. The rotation power of the rotating ball 9332 can be provided by the prior art, and a person skilled in the art can select a mature industrial product by himself or herself, without limitation.

After the water spraying is finished, the outer surface of the outer cover 1 can be wiped and cleaned. The pulling-on member 92 operates to bring the entire plate 941 close to the housing 1. A moving assembly 96 including a coupling block 961 and a moving wheel 962 is coupled to each of the adjusting veneers 94 such that each of the adjusting veneers 94 can move in a horizontal direction in fig. 9. The movement of the movement wheel 962 may be driven by a micro motor or the like. And the surface of the plate 941 includes a plurality of wiping blocks 943. The sides of the wipes 943 can be rounded so that there are no corners and scratches to the outer cover 1 are avoided.

In particular, at the four corners of the front surface of the adjusting single plate 94, there are provided buffer balls 944, whose height value protruding from the plate body 941 is lower than that of the wiping block 943. It exists to provide a limit to the safe distance. Which is movably connected to the plate 941 and can rotate freely. In some cases, the pull-up member 92 will adjust the single plate 94 too close, so that the wiping piece 943 is too tightly in contact with the housing 1, which makes it difficult to move the wiping piece and damages the components. The presence of the damping ball 944 gives a safe compression value, so that the pulling-up member 92 cannot pull the adjusting single plate 94 too close due to the interference of the damping ball 944 with the housing 1, which contributes to the effectiveness and smoothness of cleaning and also protects the various components.

After the wiping and cleaning are successful and the display screen needs to work normally, the angle of each adjusting single plate 94 is adjusted to enable the angle to be almost vertical to the plane of the outer cover 1, then the moving assembly 96 controls each adjusting single plate 94 to move, so that the adjusting single plates 94 are closely attached to and arranged on one side or two sides of the outer cover 1, the whole display screen enters a normal working mode, and the view field is not blocked.

Claims

1. The utility model provides an outdoor large screen of display mode adjustable, contains dustcoat (1), module installing frame (2) and main mount pad (3), its characterized in that: seted up the louvre on main mount pad (3), main mount pad (3) contain back plate (31) and curb plate (32), the louvre contains to be seted up main radiating hole (41) on back plate (31), dustcoat (1) is connected with the clean assembly (9) of cover screen, the clean assembly (9) of cover screen contain move frame (91) and a plurality of regulation veneer (94), every adjust veneer (94) and all be connected with removal subassembly (96), remove subassembly (96) with remove frame (91) and move the connection, every adjust veneer (94) all contain plate body (941) and with pivot (942) that plate body (941) are connected, pivot (942) with remove subassembly (96) and connect, a plurality of use between the regulation veneer (94) and connect rope (95).

2. The outdoor large screen with the adjustable display mode of claim 1, wherein: each plate body (941) is provided with a wiping block (943) for wiping the outer cover (1).

3. The outdoor large screen with the adjustable display mode of claim 2, wherein: still contain the rotation and connect buffer ball (944) on plate body (941), buffer ball (944) evaginate in the altitude value of plate body (941) is less than wipe piece (943) evaginate in the altitude value of plate body (941).

4. The outdoor large screen with the adjustable display mode of claim 3, wherein: buffer ball (944) are a plurality of, install respectively the four corners position of plate body (941), wipe piece (943) and be a plurality of, install parallel to each other the middle part position of plate body (941).

5. The outdoor large screen with the adjustable display mode of claim 1, wherein: the moving assembly (96) includes a coupling block (961) connected to the rotating shaft (942) and a moving wheel (962) connected to the coupling block (961).

6. The outdoor large screen with the adjustable display mode of claim 1, wherein: also comprises a drawing piece (92) used for adjusting the distance between the moving frame (91) and the outer cover (1).

7. The outdoor large screen with the adjustable display mode of claim 1, wherein: the movable frame (91) is provided with a water cleaning device (93) used for spraying water to the outer cover (1).

8. The outdoor large screen with the adjustable display mode of claim 7, wherein: the water cleaning device (93) comprises a transverse plate (931) connected with the moving frame (91), a water storage tank (932) connected to the transverse plate (931) and a water outlet single piece (933) connected with the transverse plate (931), the water outlet single piece (933) is multiple, and each water outlet single piece (933) is connected with the water storage tank (932) through a water pipe.

9. The outdoor large screen with the adjustable display mode of claim 8, wherein: the water outlet unit (933) comprises an extension plate (9331) connected with the transverse plate (931), a rotating ball (9332) connected with the extension plate (9331), and a water outlet pipe (9333) connected with the rotating ball (9332).