CN110785042B

CN110785042B - Outdoor display screen

Info

Publication number: CN110785042B
Application number: CN201911165243.XA
Authority: CN
Inventors: 林志锋; 李建花; 李建福
Original assignee: Fuzhou Yonghong Jiuzhou Electronic Technology Co ltd
Current assignee: Fuzhou Yonghong Jiuzhou Electronic Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-12-25
Anticipated expiration: 2039-11-25
Also published as: CN110785042A

Abstract

The invention relates to the field of display equipment manufacturing and control, in particular to design of an outdoor large screen. The invention relates to an outdoor display screen which is realized by the following technical scheme and comprises an outer cover, a module mounting frame and a main mounting seat, wherein heat dissipation holes are formed in the main mounting seat, the main mounting seat comprises a rear plate and side plates, the heat dissipation holes comprise main heat dissipation holes formed in the rear plate, and a dustproof adjusting device used for adjusting the opening and closing states of the main heat dissipation holes is further connected to the main mounting seat in a sliding mode. The invention aims to provide an outdoor display screen which has the advantages of good heat dissipation, stable working state and better dustproof performance, and avoids the reduction of the service life of electronic elements in the display screen due to the accumulation of dust.

Description

Outdoor display screen

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.

For example, chinese patent document No. CN109584715 discloses a dustproof outdoor display screen, which substantially comprises a dustproof cover arranged outside the display screen. However, although such a configuration improves the dust-proof performance, the heat radiation performance is affected by the installation of the dust cover. The large outdoor screen has large size, and many electronic circuits, modules and other components, so that the heat is large, and the poor heat dissipation can cause the instability of the working state of the display screen.

Disclosure of Invention

The invention aims to provide an outdoor display screen which has the advantages of good heat dissipation, stable working state and better dustproof performance, and avoids the reduction of the service life of electronic elements in the display screen due to the accumulation of dust.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides an outdoor display screen, 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, it is used for adjusting still to have sliding connection on the main mount pad dustproof adjusting device of the state that opens and shuts of main radiating hole.

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.

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 in another direction of fig. 6.

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 brush body comprises an extending part 852, a middle rotating part 8521, a hinged disc 8522, a rotating frame 86, a hole entering part 861, a mounting disc 862 and a brush body.

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.

Claims

1. The utility model provides an outdoor display screen, contains dustcoat (1), module installing frame (2) and main mount pad (3), its characterized in that: the main mounting seat (3) is provided with heat dissipation holes, the main mounting seat (3) comprises a rear plate (31) and side plates (32), the heat dissipation holes comprise main heat dissipation holes (41) formed in the rear plate (31), the main mounting seat (3) is further connected with a dustproof adjusting device (7) used for adjusting the opening and closing states of the main heat dissipation holes (41) in a sliding mode, the dustproof adjusting device (7) comprises a sliding rail (71) installed on the rear plate (31), a sliding plate (72) connected with the sliding rail (71) in a sliding mode and a transverse push rod (73) connected with the main mounting seat (3) and driving the sliding plate (72) to slide, the sliding plate (72) comprises a blocking plate (721) and an avoiding groove (722), the side end of the sliding plate (72) is provided with a limiting buffer (74), one side of the limiting buffer (74) is connected with the sliding plate (72), the limiting buffer member (74) comprises a contact body (741) and arc-shaped side deformation grooves (742) which are formed in two sides of the contact body (741), when the sliding plate (72) slides to a limit position to abut against the limiting buffer member (74), the main heat dissipation holes (41) are not completely shielded and are in a maximum heat dissipation mode, heat dissipation micro holes (42) are formed in the upper end of the main mounting seat (3), shielding members (5) used for shielding the heat dissipation micro holes (42) are connected to the upper end of the main mounting seat (3), each shielding member (5) comprises a transverse baffle (51) and a connecting rod (52) connecting the transverse baffle (51) and the main mounting seat (3), the aperture size of each heat dissipation micro hole (42) is smaller than that of the main heat dissipation hole (41), the upper end face of the main mounting seat (3) is an upper inclined face (33), and the height of the upper inclined face (33) is reduced along a direction away from the mounting frame (2), the heat dissipation micropores (42) are arranged on the upper inclined plane (33), the air blowing device (6) is arranged in the main mounting seat (3), and the air blowing device (6) comprises a fan, an air pipe and a dust blowing device (61) connected with the air pipe.

2. An outdoor display screen according to claim 1, characterized in that: the main heat dissipation holes (41) are arranged in a rectangular array, the blocking plates (721) and the avoidance grooves (722) extend in the vertical direction and are arranged at intervals in the horizontal direction, and the pushing-out direction of the transverse push rod (73) is the horizontal transverse direction.

3. An outdoor display screen according to claim 1, characterized in that: the outer surface of the upper inclined plane (33) is a guide arc path (331) in a circular arc shape.

4. An outdoor display screen according to claim 1, characterized in that: the dust blowing device (61) comprises a bottom plate (611) connected with a main mounting seat (3), an extension pipe (612) which is installed on the bottom plate (611) and can extend and retract in the vertical direction, and a blowing head (613) installed on the extension pipe (612), wherein the extension pipe (612) penetrates through the upper end face of the main mounting seat (3).

5. An outdoor display screen according to claim 4, characterized in that: the blowing head (613) is two and is located the central position of the main mounting seat (3), and each blowing head (613) is far away from one side of the central axis direction of the main mounting seat (3) and is provided with a plurality of blast micropores (6131).