CN112542099B - Outdoor LED display screen - Google Patents

Abstract

The invention discloses an outdoor LED display screen, which comprises a display module, a radiator, a box body and a power supply box, wherein the box body comprises a panel, the panel is provided with a plurality of installation areas and U-shaped grooves, the installation areas are provided with vacant parts, and the U-shaped grooves are arranged between the installation areas; the display module comprises a bottom shell and a receiving card, the bottom shell is fixed on an installation area of the panel through a lock, the power supply box is arranged on the U-shaped groove and comprises a sending card, the display module is in conductive connection with the power supply box through a buckle type connector, the power supply box reduces voltage to a preset value and provides the voltage for the display module, and the sending card sends a display signal to the receiving card. The display screen is simple in structure, convenient to install and detach and good in heat dissipation effect, and the conduction and signal connection of the display module are effectively achieved.

Description

Outdoor LED display screen

Technical Field

The invention relates to the technical field of LED display screens, in particular to an outdoor LED display screen.

Background

The existing outdoor LED display screen is mainly used for performance and exhibition, and particularly comprises a plurality of display modules which are arranged on a box body, and a plurality of box bodies are spliced into a large screen. The structure of the box body and the installation mode of the box body and the display module play an important role in the splicing speed and efficiency of the large-sized outdoor LED display screen, and how to simplify the structure of the box body and improve the installation efficiency of the box body and the display module is a problem to be solved by the existing outdoor LED display screen.

In addition, the existing display module has large heat generation and high temperature, and is easy to burn out, so that a radiator is required to be installed to radiate the display module. The existing radiator can only reduce the partial temperature of the display module, cannot realize comprehensive heat dissipation well, and the heat dissipation effect needs to be improved.

Further, the display module needs to be electrically connected with an external power supply, so that the problem that the existing outdoor LED display screen needs to be solved is solved.

Disclosure of Invention

The outdoor LED display screen has the advantages of simple structure, convenient installation and disassembly and good heat dissipation effect, and effectively solves the problems of electric conduction and signal connection of the display module.

The invention also solves the technical problem of providing the outdoor LED display screen which has high matching precision, good sealing performance and good consistency and stability of display effect.

In order to solve the technical problems, the invention provides an outdoor LED display screen, which comprises a display module, a radiator, a box body and a power supply box, wherein the box body comprises a panel, the panel is provided with a plurality of installation areas and U-shaped grooves, the installation areas are provided with vacant parts, and the U-shaped grooves are arranged between the installation areas; the display module comprises a bottom shell and a receiving card, the bottom shell is fixed on an installation area of the panel through a lock, the power box is arranged on the U-shaped groove and comprises a sending card, the display module is in conductive connection with the power box through a buckle type connector, the power box reduces the voltage to a preset value and provides the voltage for the display module, and the sending card sends a display signal to the receiving card;

the radiator comprises a radiating shell and a ventilation device, wherein the radiating shell is arranged on the display module with the exposed blank part, a radiating channel is arranged on the back surface of the radiating shell, and the ventilation device is arranged in the radiating channel so as to accelerate the air flowing in the radiating channel;

the buckle type connector comprises a mounting seat and a connector, wherein the mounting seat is fixed on the radiator, and the connector is detachably connected with the mounting seat.

As an improvement of the scheme, one end of the heat dissipation channel is an air inlet, the other end of the heat dissipation channel is an air outlet, the ventilation device arranged in the heat dissipation channel divides the heat dissipation channel into an air inlet channel and an air outlet channel, air enters from the air inlet and sequentially passes through the air inlet channel, the ventilation device and the air outlet channel, and finally is discharged from the air outlet.

As an improvement of the above scheme, a first heat dissipation rib and a second heat dissipation rib are arranged on the back surface of the heat dissipation shell, wherein the first heat dissipation rib is arranged on the outer side of the second heat dissipation rib and forms the heat dissipation channel with the second heat dissipation rib;

At least one third heat dissipation rib is arranged in the air inlet channel and is arranged at a wind direction turning position of the air inlet channel so as to divide the air inlet channel at the position into at least two paths; the air outlet channel is internally provided with at least one fourth heat dissipation rib, and the fourth heat dissipation rib is arranged at the wind direction turning part of the air outlet channel so as to divide the air outlet channel at the position into at least two paths.

As an improvement of the scheme, the front surface of the heat dissipation shell is provided with a heat dissipation boss, and the position of the heat dissipation boss corresponds to the position of the heating element of the receiving card, so that the heat of the heating element is transferred to the heat dissipation shell through the heat dissipation boss;

The distance between the heat dissipation boss and the heating element is 0.2-0.8 cm, and heat conducting glue is filled between the heat dissipation boss and the heating element.

As an improvement of the scheme, the display module further comprises a panel, a PCB board, a light isolation board and an optical lens, the bottom shell comprises a bottom plate and side plates surrounding the periphery of the bottom plate, the front surface of the bottom plate is provided with a first mounting column, a second mounting column and a grid bulge structure, the first mounting column is higher than the grid bulge structure, and the inner side wall of the side plate is provided with a bottom plate boss; the optical lens comprises a lens substrate, a lens group and a lens positioning column, wherein the lens group comprises a light emitting part and a light guide column, the light emitting part is arranged on the front surface of the lens substrate, and the positioning column and the light guide column are arranged on the back surface of the lens substrate;

the PCB is arranged on the first mounting column, so that a preset distance is reserved between the grid protruding structure and the PCB, and the light isolation plate is arranged on the base plate boss to be arranged above the PCB;

the second mounting column is used for fixing the optical lens on the light isolation plate, clamping the light isolation plate and the PCB between the optical lens and the bottom shell, and inserting the bottom of the lens positioning column into the PCB, wherein the light guide column and the SMD light source on the PCB are in the same straight line.

As an improvement of the above-mentioned scheme, the light-emitting part has an incident plane and a light-emitting surface, the incident plane is perpendicular to the horizontal plane, the light-emitting surface intersects with the horizontal plane to form a first curve, the first curve has a total reflection section and a refraction section adjacent to the total reflection section, at least part of the light incident from the incident plane is totally reflected in the total reflection section and is emitted through the adjacent refraction section after being totally reflected;

the light-emitting surface and the vertical surface intersect to form a second curve, the vertical surface is perpendicular to the incident plane and the horizontal plane respectively, and the second curve protrudes towards the direction far away from the incident plane.

As an improvement of the scheme, the mounting seat comprises a shell, wherein a mounting cavity is arranged in the shell, two sides of the shell are provided with clamping empty parts, the mounting cavity penetrates through the shell, and the clamping empty parts are communicated with the mounting cavity;

The connector comprises a body, a plug part and an elastic part, wherein the plug part is arranged at one end of the body, one end of the elastic part is connected to the side wall of the body, a deformation vacancy part is arranged between the elastic part and the side wall of the body, and a buckling protrusion is arranged on the side wall, far away from the body, of the elastic part.

As an improvement of the scheme, a first waterproof rib is arranged on the abutting surface of the mounting seat and the radiating shell, and the first waterproof rib is arranged around the mounting cavity;

the waterproof heat dissipation device is characterized in that a water bar is arranged among the mounting seat, the connector and the heat dissipation shell, and the water bar is used for sealing and waterproof connection of the mounting seat, the connector and the heat dissipation shell.

As an improvement of the scheme, the box body further comprises a section bar, and the section bar is arranged around the panel to form a box body structure;

The power supply box is in conductive connection with the display module through a power supply model line, one end of the power supply model line is connected to the connector, the other end of the power supply model line is connected to the power supply box, and the power supply signal line is hidden in the U-shaped groove;

the power box provides the display module with a voltage drop from 220V to 48V.

As an improvement of the above scheme, the lock comprises a first connecting part, a second connecting part and a limiting boss, wherein at least one limiting protrusion is arranged on the side wall of the first connecting part, the limiting protrusion extends outwards along the side wall of the first connecting part, the limiting boss is arranged between the first connecting part and the second connecting part, extends outwards around the side wall of the connecting part of the first connecting part and the second connecting part and protrudes outwards, the limiting boss is clamped on the bottom shell, and the limiting protrusion is clamped on the panel so as to fasten the display module on the panel;

The first connecting part, the second connecting part and the limiting boss are integrally formed through injection molding, and the material of the first connecting part, the second connecting part and the limiting boss is plastic or PP.

The implementation of the invention has the following beneficial effects:

The invention adopts a method of adding the section bar on the panel to simplify the structure of the box body, wherein, the U-shaped groove is arranged on the panel to accommodate the power signal wire, so that the whole box body is more orderly and concise; in addition, the box body has low cost and high production efficiency, and the size of the box body can be changed according to the requirements of customers.

The power supply box comprises a sending card, the power supply box reduces the voltage to a preset value and provides the preset value for the display module, the sending card sends a display signal to a receiving card, the sending card and the receiving card are connected through a power signal wire, and then images and characters are displayed through the display module; the box body of the invention is used as a carrier of the display module and the power supply box.

The radiator is arranged on the bottom shell of the display module, and the ventilation device is arranged in the heat dissipation channel, wherein the ventilation device arranged in the heat dissipation channel pumps wind from the air inlet, and then the wind is discharged from the air outlet after passing through the air inlet channel and the air outlet channel, so that heat exchange on the back surface of the heat dissipation shell is enhanced, the temperature of the back surface of the shell and the temperature of the display module are reduced rapidly, and a good heat dissipation effect is achieved.

The invention sets up the boss on the front of the radiating shell and corresponding position of the heating element of the receiving card, and make boss and heating element have preset distance, can transfer the heat of the main heating position of the receiving card to the outside of the radiator through the boss; in addition, the heat conducting glue is filled between the boss and the heating element, and is used as a heat circulation medium to make up the gap between the heating element and the boss, increase the heat conduction between the boss and the heating element and improve the overall heat dissipation effect.

The lock disclosed by the invention is tightly locked on the bottom plate of the display module and the panel of the box body through the mutual matching of the first connecting part, the second connecting part and the limiting boss and through the functions of the triangular mounting hole and the limiting boss, so that the tight connection of the display module and the box body and the rapid mounting and dismounting of the display module and the box body are realized.

The invention adopts light material (plastic or PP) to manufacture the main body of the lock, and the metal sleeve is arranged in the triangular through hole through an injection molding integrated molding process, so that the process is simple, the lock has light weight and low cost.

The buckle type connector realizes detachable connection through the mutual matching of the mounting seat and the connector; wherein, the erection column is fixed on the radiator, and the one end and the power model line connection of joint are through the mutual cooperation of elasticity portion, buckle arch and buckle vacancy portion to make the joint closely, firmly install in the mount pad.

According to the buckle type connector, the waterproof ribs are arranged on the abutting surface of the mounting column and the radiating shell to serve as a first waterproof structure, and the water retaining bars are arranged at the joint of the mounting seat, the connector and the radiating shell to serve as a second waterproof structure, so that double waterproof protection of the buckle type connector is achieved.

The bottom shell of the display module is provided with a first mounting column on the front surface of a bottom plate for fixing a PCB, a bottom plate boss is arranged on the inner side wall of a side plate for fixing a light isolation plate, and a second mounting column is arranged on the front surface of the bottom plate for fixing an optical lens, wherein a fixing piece penetrates through the PCB and is inserted into a mounting hole of the first mounting column so as to fasten the PCB on the bottom shell; the fixing piece penetrates through the optical lens and the PCB and is inserted into the mounting hole of the second mounting column, and the light-isolating plate and the PCB are clamped between the optical lens and the bottom shell so as to realize tight connection of the bottom shell, the PCB, the light-isolating plate and the optical lens; and finally, injecting the colloid into the edge of the light isolation plate, so that the optical lens, the light isolation plate and the bottom shell are in sealing connection, wherein the colloid can be prevented from overflowing through the side plates, the glue injection quantity of the colloid is reduced, and the effects of improving the production efficiency and reducing the weight of the display screen are achieved.

The light emergent surface of the light emergent part is intersected with the horizontal plane to form a first curve which is provided with the total reflection section and the refraction section, so that at least part of light rays entering from the incidence plane in the horizontal direction can be totally reflected in the total reflection section, in the process, the light rays subjected to total reflection have a larger emergent angle, then the light rays are emitted through the adjacent refraction section, and the emergent angle is increased again when the refraction section is emitted, so that the visible angle in the horizontal (left and right) direction is increased.

The second curve formed by intersecting the light-emitting surface and the vertical surface of the light-emitting part protrudes in a direction away from the incident plane, so that light rays in the vertical direction entering from the incident plane can be converged towards the middle, the visible angle in the vertical (up-down) direction is reduced, and the problem of low utilization rate of the light rays in the vertical direction is avoided.

Drawings

FIG. 1 is a rear view of an LED display screen of the present invention;

FIG. 2 is a rear view of the display module bottom case of the present invention mounted on a case;

FIG. 3 is an exploded view of the display module of the present invention;

FIG. 4 is a perspective view of a bottom chassis of the display module of the present invention;

FIG. 5 is a cross-sectional view of a bottom housing of the display module of the present invention;

FIG. 6 is a perspective view of an optical lens of a display module according to the present invention;

FIG. 7 is a front view of a lens group of an optical lens of the present invention;

FIG. 8 is a left side view of FIG. 7;

fig. 9 is a front view of the light-emitting portion of the lens assembly of the present invention;

FIG. 10 is a partial cross-sectional view of a display module of the present invention;

FIG. 11 is a rear view of a bottom housing of the display module of the present invention;

FIG. 12 is a perspective view of the lock of the present invention;

FIG. 13 is a schematic view of the assembly of the lock with the bottom shell and the face plate of the present invention;

FIG. 14 is a schematic view of the lock and bottom shell of the present invention;

FIG. 15 is a perspective view of a heat dissipating housing of the present invention;

FIG. 16 is a front view of the heat dissipating housing of the present invention;

FIG. 17 is a schematic view of the installation of the heat dissipating housing, receiving card, and snap-on connector of the present invention;

FIG. 18 is a schematic view of a wind direction with heat dissipating ribs in the heat dissipating channels;

FIG. 19 is a schematic view of the wind direction of the lack of heat dissipating ribs in the heat dissipating channels;

FIG. 20 is a front view of the snap-on fitting of the present invention;

FIG. 21 is an exploded view of the snap-on fitting of the present invention;

fig. 22 is a cross-sectional view of the heat sink and snap-in fitting of the present invention after installation.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.

Referring to fig. 1, the outdoor LED display screen provided by the invention comprises a display module 1, a radiator 2, a box 3 and a power supply box 4, wherein the display module 1 and the power supply box 4 are arranged on the box 3, the radiator 2 is arranged on the display module 1, the display module 1 comprises a receiving card, the display module 1 and the power supply box 4 form conductive connection through a buckle type connector 6, the power supply box 4 comprises a transmitting card, the power supply box 4 reduces the voltage to a preset value to the display module 1, and the transmitting card transmits a display signal to the receiving card. Preferably, the power supply box 4 supplies the display module 1 with a voltage drop from 220V to 48V.

Referring to fig. 2, the case 3 includes a panel 31, the panel 31 is provided with a plurality of mounting areas 311 and U-shaped grooves 312, the mounting areas 311 are provided with a hollow portion 313, and the U-shaped grooves 312 are provided between the mounting areas 311; the display module 1 includes a bottom shell 11, the bottom shell 11 is fixed on a mounting area 311 of the panel 31 through a lock 7, the radiator 2 is arranged on the bottom shell 11 with a gap 313 exposed, the power box 4 is arranged on a U-shaped groove 312, the power box 4 is electrically connected with the display module 1 through a power model line 8, one end of the power model line 8 is connected on the buckle type connector 6, the other end is connected on the power box 6, and the power signal line 8 can be hidden in the U-shaped groove 312.

Further, the case 3 further includes a section bar 32, and the section bar 32 is disposed around the panel 31 to form a case structure.

Referring to fig. 3, the display module 1 further includes a face mask 12, a PCB 13, a light blocking plate 14, and an optical lens 15.

Referring to fig. 4 and 5, the bottom chassis 11 includes a bottom plate 111 and a side plate 112 surrounding the bottom plate 111, wherein a first mounting column 1111, a second mounting column 1112 and a grid protrusion 1113 are disposed on the front surface of the bottom plate 111, and the first mounting column 1111 is higher than the grid protrusion 1113.

Referring to fig. 6, the optical lens 15 includes a lens substrate 151, a lens group including a light-emitting portion 153 and a light-guiding column 154, the light-emitting portion 153 being disposed on the front surface 111 of the lens substrate 151, and the lens group 152 and the light-guiding column 154 being disposed on the rear surface of the lens substrate 151.

Referring to fig. 7 to 9, the light-emitting portion 153 has an incident plane 1531 and a light-emitting surface, the incident plane 1531 is perpendicular to a horizontal plane, the light-emitting surface intersects with the horizontal plane to form a first curve 1532, the first curve 1532 has a total reflection section and a refraction section adjacent to the total reflection section, and at least part of the light incident from the incident plane 1531 is totally reflected in the total reflection section and is emitted through the adjacent refraction section after being totally reflected; the light emitting surface intersects with a vertical surface to form a second curve 1533, the vertical surface is perpendicular to the incident plane 531 and the horizontal plane, and the second curve 1533 protrudes in a direction away from the incident plane 1531.

The light emergent surface of the light emergent portion 153 is intersected with a horizontal plane to form a first curve 1532 with a total reflection section and a refraction section, so that at least part of light rays entering from the incident plane 1531 in the horizontal direction can be totally reflected in the total reflection section, in the process, the light rays subjected to total reflection have a larger emergent angle, then the light rays are emitted through the adjacent refraction section, and when the refraction section is emitted, the emergent angle is increased again, so that the visible angle in the horizontal (left and right) direction is increased.

The second curve 1533 formed by intersecting the light emitting surface and the vertical surface of the light emitting portion 153 protrudes in a direction away from the incident plane 1531, so that the light rays in the vertical direction entering from the incident plane 1531 are converged toward the middle, the viewing angle in the vertical (up-down) direction is reduced, and the problem of low utilization rate of the light rays in the vertical direction is avoided.

The cross-sectional area of the end of the light guiding pillar 154 near the incident plane 1531 is larger than the cross-sectional area of the end of the light guiding pillar 154 far away from the incident plane 1531, so that the light of the SMD light source can completely enter the light emitting portion 153 after passing through the light guiding of the light guiding pillar 154, and the light utilization rate is ensured.

Preferably, an optical path portion 1534 is further disposed between the light guide pillar 154 and the incident plane 1531, and the optical path portion 1534 is disposed on the front surface of the lens substrate 151, and the optical path portion 1534 is provided in the present invention, so that the installation of the optical lens 15 is facilitated, that is, the entire optical lens 15 can be positioned and fixed by the optical path portion 1534.

Referring to fig. 10, the PCB 13 is disposed on the first mounting post 1111 such that a predetermined distance is provided between the mesh protrusion structure 1113 and the PCB 13; the side plate 112 is higher than the front surface of the bottom plate 111, a bottom plate boss 121 is arranged on the inner side wall of the side plate 112, and the light-blocking plate 4 is erected on the bottom plate boss 121, wherein the bottom plate boss 121 is higher than the first mounting column 1111 so as to arrange the light-blocking plate 14 above the PCB 13; the second mounting post 1112 is used for fixing the optical lens 15 disposed on the light-isolating plate 14, the fixing member passes through the optical lens 15 and the PCB 13 and is inserted into the mounting hole of the second mounting post 1112, so that the light-isolating plate 14 and the PCB 13 are clamped between the optical lens 15 and the bottom shell 11, so as to realize tight connection of the bottom shell 11, the PCB 13, the light-isolating plate 14 and the optical lens 15, the bottom of the lens positioning post 152 is inserted into the PCB 13, wherein the light-guiding post 154 and the SMD light source 131 on the PCB 13 are on the same straight line, and a preset distance is provided between the bottom of the light-guiding post 154 and the SMD light source 131.

Specifically, the first mounting post 1111 protrudes upward along the front surface of the bottom plate 111, and has a mounting hole therein, and when the PCB 13 is mounted, a screw is inserted into the mounting hole of the first mounting post 1111 through the PCB 13, thereby fixing the PCB 13 on the first mounting post 1111.

The mesh protrusion structure 1113 of the present invention protrudes upward from the front surface of the bottom plate 111, so that it can increase the heat dissipation area and improve the heat dissipation effect of the bottom case. In addition, the PCB 13 and the grid raised structure 1113 have a certain distance, so that the air flow between the PCB 13 and the grid raised structure can be increased, and the heat dissipation effect is further improved. Preferably, the mesh protrusion structure 1113 is honeycomb-shaped, but is not limited thereto.

The PCB 13 is disposed on the first mounting column 1111 on the front surface of the bottom plate 111, and the PCB 13 is fixed on the bottom case 11 by screws, and the peripheries (the bottom case 11 and the PCB 13) of the two are required to be connected in a sealing manner by glue. Since the side plate 112 is higher than the front surface of the bottom plate 111, the side plate 112 can prevent the glue from overflowing when the bottom shell 11 is injected with the glue, so as to reduce the glue injection amount of the glue, improve the production efficiency and reduce the weight of the display screen.

Specifically, the optical lens 15 is provided with a lens mounting post 55 corresponding to the second mounting post 1112, the lens mounting post 55 passes through the light-blocking plate 14 and abuts against the PCB 13, and a screw passes through the lens mounting post 55 and the PCB 13 and is inserted into a mounting hole of the second mounting post 1112, so that the light-blocking plate 14 and the PCB 13 are clamped between the optical lens 15 and the bottom case, so as to realize tight connection of the bottom case, the PCB 13, the light-blocking plate 14 and the optical lens 15.

The front surface of the bottom plate 111 is further provided with a first positioning column 1114, the first positioning column 1114 is higher than the first mounting column 1111, and the top of the first positioning column 1114 is inserted into a positioning hole corresponding to the PCB 13 for determining the relative position between the PCB 13 and the bottom plate 111, so that the PCB 13 is quickly and accurately mounted on the bottom case.

The front surface of the bottom plate 111 is further provided with a third mounting column 1115 and a second positioning column 1116, the third mounting column 1115 is higher than the first mounting column 1111, the third mounting column 1115 is used for mounting the mask 12, specifically, the third mounting column 1115 passes through the PCB 13, the light-shielding plate 14 and abuts against the bottom of the mask 12, and the screw passes through the mask 12 plate and is inserted into the mounting hole of the third mounting column 1115, so that the mask 12 is fixed on the bottom shell, and the mask 12 is covered on the optical lens 15. The second positioning column 1116 is higher than the third mounting column 1115, the second positioning column 1116 passes through the PCB 13 and the light-shielding plate 14, and the top of the second positioning column 1116 is inserted into a corresponding positioning hole of the mask 12, so as to determine the relative position between the mask 12 and the bottom plate 111, so that the mask 12 is quickly and accurately mounted on the bottom case.

Referring to fig. 11, a heat dissipation area 1121, a fourth mounting column 1122 and a fifth mounting column 1123 are provided on the back surface of the base plate 111, and the fourth mounting column 1122 is provided in the heat dissipation area 1121 for mounting a receiving card; the fifth mounting posts 1123 are disposed around the heat dissipation area 1121 for mounting the heat sink 2.

The back of the bottom plate 111 is further provided with a third positioning column 1124, the third positioning column 1124 is disposed in the heat dissipation area 1121, and the third positioning column 1124 is used for determining the relative position of the motherboard and the bottom plate 111, so that the motherboard is quickly and accurately mounted on the heat dissipation area 1121.

The bottom plate 111 is further provided with a heat dissipation through hole 1125, the heat dissipation through hole 1125 penetrates through the bottom plate 111, the heat dissipation through hole 1125 is located in the heat dissipation area 1121, cold air generated by the heat radiator 2 can enter the bottom shell through the heat dissipation through hole 1125, and the heat dissipation effect is further improved by heating the communication of air inside and outside the bottom shell.

Preferably, the heat dissipation through hole 1125 is elongated, but is not limited thereto. The through hole 1125 of the present invention may be circular, square, polygonal, or the like.

Referring to fig. 12 and 13, the lock 7 of the present invention includes a first connecting portion 71, a second connecting portion 72 and a limiting boss 73, wherein at least one limiting protrusion 712 is disposed on a side wall of the first connecting portion 71, the limiting protrusion 712 extends outwards along the side wall of the first connecting portion 71, the limiting boss 73 is disposed between the first connecting portion 71 and the second connecting portion 72, extends outwards around the side wall of the connecting portion between the first connecting portion 71 and the second connecting portion 72, the limiting boss 73 is clamped on the bottom shell 11, and the limiting protrusion 712 is clamped on the panel 31 to fasten the display module 1 on the panel 31.

Preferably, a triangular mounting hole 711 is provided in the first connecting portion 71, and the triangular mounting hole 711 extends from an end of the first connecting portion 71 into the first connecting portion 71 or penetrates the first connecting portion 71. The triangular mounting holes 711 can lock the lock 7 on the bottom case 11 and the panel 31 by corresponding triangular screwdrivers, thereby mounting the display module 1 on the panel 31.

Since the limiting boss 73 is to be clamped on the bottom shell 11 and is connected between the first connecting portion 71 and the second connecting portion 72, the thickness of the limiting boss 73 plays an important role in the reliability of the lock. If the thickness of the limit boss 73 is too thin, it is easily broken; if the thickness of the limit boss 73 is too thick, the mounting is affected. Preferably, the thickness of the limiting boss 73 is 1.8-2.5 mm. More preferably, the thickness of the limiting boss 73 is 2.0-2.3 mm.

The limiting boss 73 is provided with a protruding portion 731, the protruding portion 731 protrudes outwards along the side wall of the limiting boss 73, referring to fig. 14, when the device is installed, the protruding portion 731 is clamped in the limiting groove 121 of the bottom shell 11, so as to prevent excessive tightening, and ensure that the limiting protrusion 712 can be clamped on the panel 31.

Specifically, the panel 31 is provided with a corresponding mounting hole, wherein the mounting hole on the panel 31 is rectangular, the protruding direction of the limiting protrusion 712 on the first connecting portion 71 is the same as the length direction of the mounting hole on the panel 31 when the lock is mounted, and the protruding direction of the limiting protrusion 712 on the first connecting portion 71 is perpendicular to the length direction of the mounting hole on the panel 31 when the lock is locked, that is, the protruding direction of the limiting protrusion 712 on the first connecting portion 71 is the same as the width direction of the mounting hole on the panel 31, wherein the length of the mounting hole on the panel 31 is greater than the total length of the first connecting portion 11 and the limiting protrusion 712, and the width of the mounting hole on the panel 31 is smaller than the total length of the first connecting portion 71 and the limiting protrusion 712.

The triangle mounting hole 711 is provided with a metal pipe sleeve (not shown in the figure), the shape and the size of the metal pipe sleeve are matched with those of the triangle mounting hole 711, and the metal pipe sleeve is clung to the side wall of the triangle mounting hole so as to strengthen the integral strength of the lockset and further prevent the triangle mounting hole 711 from sliding. Wherein, the metal pipe sleeve is also internally provided with a triangular mounting hole 711.

Preferably, the metal sleeve is made of stainless steel, aluminum alloy and other metals.

In order to reduce the locking weight, the first connecting portion 71, the second connecting portion 72 and the limiting boss 73 are integrally formed by injection molding, and the material is plastic or PP.

In order to ensure the strength, the existing lockset is made of iron, copper and other metals, so that the lockset is heavy in weight and high in cost.

Referring to fig. 15 to 17, the radiator 2 includes a radiator housing 21 and a ventilation device 22, the radiator housing 21 is disposed on the bottom shell 11 of the display module 1, a radiator boss 211 is disposed on the front surface of the radiator housing 21, the position of the radiator boss 211 corresponds to the position of the heating element of the receiving card 5 and has a preset distance with the heating element, a first radiator rib 212 and a second radiator rib 213 are disposed on the back surface of the radiator housing 21, wherein the first radiator rib 212 is disposed on the outer side of the second radiator rib 213 and forms a radiator channel with the second radiator rib 213, one end of the radiator channel is an air inlet, the other end is an air outlet, the ventilation device 22 is disposed in the radiator channel and separates the radiator channel into an air inlet channel 214 and an air outlet channel 215, the air inlet is communicated with the air inlet channel 214, the air outlet is communicated with the air outlet channel 215, the ventilation device 22 disposed in the radiator channel draws air in from the air inlet channel 214 and then discharges air from the air outlet after passing through the air inlet channel 215, so as to enhance heat exchange on the back surface of the second radiator rib 213, one end of the radiator rib 213 is an air inlet, and the other end is an air outlet, and the radiator is separated from the radiator channel.

Preferably, the heat dissipation channel is of a reverse U-shaped structure, and the heat dissipation channel is provided with a wind direction turning part.

Preferably, at least one third heat dissipation rib 216 is disposed in the air intake channel 214, and the third heat dissipation rib 216 is disposed at a wind direction turning position of the air intake channel 214 to divide the air intake channel 214 therein into at least two paths; at least one fourth heat dissipation rib 217 is disposed in the air outlet channel 215, and the fourth heat dissipation rib 217 is disposed at a wind direction turning position of the air outlet channel 215 to divide the air outlet channel 215 into at least two paths. According to the invention, the third heat dissipation ribs 216 are arranged in the air inlet channel 214, and the fourth heat dissipation ribs 217 are arranged in the air outlet channel 215, so that the air in the air inlet channel 214 and the air outlet channel 215 can be prevented from forming vortex, the back of the body can be ensured to quickly and smoothly exchange heat, and the temperature of the back of the heat dissipation shell 21 can be quickly reduced.

More preferably, fifth heat dissipation ribs 218 are further disposed in the air inlet channel 214 and the air outlet channel 215, wherein the fifth heat dissipation ribs 218 disposed in the air inlet channel 214 and the fifth heat dissipation ribs 218 disposed in the air outlet channel 215 are symmetrically disposed, and the fifth heat dissipation ribs 218 are closer to the first heat dissipation ribs 212 than the third heat dissipation ribs 216 or the fourth heat dissipation ribs 217. After the fifth heat dissipation rib 218 is added, one path of air inlet channel 214 and one path of air outlet channel 215 are added.

Specifically, the fifth heat dissipation rib 218 includes a straight portion 2181 and a curved portion 2182, wherein the straight portion 2181 of the fifth heat dissipation rib 218 disposed in the air inlet channel 214 is perpendicular to the air inlet direction of the air inlet, and the curved portion 2182 is curved along one end of the straight portion in the direction of the air inlet at the turning position of the air direction. Therefore, the fifth ribs 218 can further prevent the wind in the wind inlet channel 214 and the wind outlet channel 215 from forming vortex, so that the back of the body can quickly and smoothly exchange heat, and the temperature of the back of the heat dissipation shell 21 can be quickly reduced.

It should be noted that, because the heat dissipation channel is in the shape of a n, the wind direction turning position corresponds to the turning position of the n. Wherein, the heating element of the receiving card 5 is a DCDC device.

As shown in fig. 18, in the air intake passage 214 provided with the third heat dissipation ribs 216, the air enters from the end in the air intake passage 214, is divided into at least two at the wind direction turning, and finally is gathered together to enter the ventilation device 22; in the air outlet channel 215 provided with the fourth heat dissipation ribs 217, the ventilation device 22 introduces air into the air outlet channel 215, the air is divided into at least two channels at the turning position of the wind direction, and finally the air is gathered together and discharged from the end part of the air outlet channel 215.

If the third heat dissipation ribs 216 or the fourth heat dissipation ribs 217 are absent in the air intake channel 214 and the air outlet channel 215, as shown in fig. 19, wind enters from the end of the air intake channel 214, and the wind easily forms a vortex at the wind direction turning point, so that the wind in the air intake channel 214 is difficult to enter the ventilation device 22; when the ventilation device 22 introduces wind into the air outlet passage 215, the wind is liable to form a vortex at the wind direction turning position, and the wind is difficult to be discharged from the end of the air outlet passage 215, and the heat is always accumulated in the heat dissipation housing 21, thereby affecting the heat dissipation effect.

Further, the third heat dissipating rib 216 and the fourth heat dissipating rib 217 have different shapes, and the fourth heat dissipating rib 217 is closer to the ventilation device 22 than the third heat dissipating rib 216, so that the formation of vortex can be further reduced.

The ventilation device 22 of the present invention is preferably a fan, but is not limited thereto. The ventilation device 22 pumps air with lower temperature outside the heat dissipation shell 21 into the air inlet channel 214 through the air inlet, and the air with lower temperature exchanges heat with the back of the heat dissipation shell 21 to reduce the temperature of the heat dissipation shell 21; the ventilation device 22 discharges the air after heat exchange out of the air outlet channel 215 through the air outlet, so as to avoid heat from converging on the back surface of the heat dissipation shell 21 and ensure the smoothness of the heat dissipation channel.

The heat dissipating boss 211 of the present invention is used to conduct the heat of the heating element to the heat dissipating case 21 so that the heat is dissipated to the air from the back of the heat dissipating case 21.

Wherein, the height of the heat dissipating boss 211 plays an important role in heat dissipating effect, and if the height of the heat dissipating boss 211 is too high, the heat generating element is propped against, so that the receiving card 5 is easy to crush; if the height of the heat dissipating boss 211 is too low, the heat conduction efficiency between the heat dissipating boss 211 and the heating element is reduced, and the heat dissipating effect is affected. Preferably, the distance between the heat dissipating boss 211 and the heat generating element is 0.2-0.8 cm. More preferably, the distance between the heat dissipating boss 211 and the heating element is 0.3-0.5 cm.

In order to further improve the heat conduction between the heat dissipation boss 211 and the heating element, a heat conducting adhesive is filled between the heat dissipation boss 211 and the heating element, and the heat conducting adhesive is used as a heat circulation medium to compensate the gap between the heating element and the heat dissipation boss 211, increase the heat conduction between the heat dissipation boss 211 and the heating element, and improve the overall heat dissipation effect. Preferably, the heat-conducting glue is heat-conducting silica gel, but is not limited thereto.

In order to ensure that the heat dissipating boss 211 can be accurately arranged below the heating element and ensure that the distance between the heat dissipating boss 211 and the heating element is within a preset range, the front surface of the heat dissipating housing 21 is further provided with positioning ribs 219, and the positioning ribs 219 are arranged around the heat dissipating boss 211, abut against the receiving card 5 and enclose the heating element.

The display module 1 is electrically connected with the power box 4 through the snap-in connector 6, in order to realize the connection between the snap-in connector 6 and the receiving card 5, a connection area 2110 is arranged on the side surface of the heat dissipation housing 21, and a through hole 2111 is arranged in the connection area 2110.

Referring to fig. 20 to 22, the snap-on connector 6 includes a mounting seat 61 and a connector 62, the mounting seat 61 is fixed on a connection area 2110 of the heat dissipation housing 21, the mounting seat 61 includes a housing 611, a mounting cavity 612 is provided in the housing 611, two sides of the housing 611 are provided with a snap-on void 615, the mounting cavity 612 penetrates through the housing 611, the snap-on void 615 is communicated with the mounting cavity 612, the connector 62 includes a body 621, a plug 622 and an elastic portion 623, the plug 622 is provided at one end of the body 621, one end of the elastic portion 623 is connected on a side wall of the body 621, a deformation void 615 is provided between the elastic portion 623 and the side wall of the body 621, a snap-on protrusion 625 is provided on the side wall of the elastic portion 623 away from the body 621, the connector 62 is inserted into the mounting cavity 612 of the mounting seat 61, the side wall of the elastic portion 623 abuts against the inner side wall of the housing 611, and the snap-on protrusion 625 is snapped into the snap-on void 615, and the plug 622 penetrates through a through hole on the connection area to connect with the receiving cavity 2110.

During installation, the elastic parts 623 at two sides of the pressing body 621 move towards the deformation vacant parts 615, the connector 62 is inserted into the installation cavity 612 of the installation seat 61, the plug part 622 is inserted into the heat dissipation shell 21 to be connected with the receiving card 5, then the elastic parts 623 are loosened, the side walls of the elastic parts 623 are abutted against the inner side walls of the shell 611, and the buckling protrusions 625 of the elastic parts are buckled in the buckling vacant parts 615, so that the installation of the buckling connector 623 is realized.

When the connector is disassembled, the elastic parts 623 on two sides of the extrusion body 621 move towards the deformation vacant parts 615, so that the side walls of the elastic parts 623 are separated from the inner side walls of the shell 611, the buckling protrusions 625 of the elastic parts are separated from the buckling vacant parts 615, then the plug part 622 is pulled out of the heat dissipation shell 21, and finally the whole connector 62 is pulled out of the mounting cavity 612, so that the disassembly of the buckling connector 623 is realized.

The snap-in joint 623 of the present invention achieves detachable connection by the mutual cooperation of the mounting seat 61 and the joint 62; further, the fitting 62 is tightly and firmly fitted into the mount 61 by the cooperation of the elastic portion 623, the snap projection 625, and the snap void 615.

Wherein, the elastic portion 623 is connected to one end of the body 621 near the plug 622, and one end of the elastic portion 623 not connected to the body 621 is far away from the plug 622.

Preferably, the elastic portion 623 is connected to the end of the body 621 and is inclined outwardly along the end far from the plug portion 622, i.e., the width of the deformation void portion 615 increases from the end near the elastic portion 623 connected to the body 621 to the end far from the plug portion 622.

Preferably, the latch protrusion 625 is provided with an outwardly protruding curved surface facing the latch recess 615, and the latch protrusion 625 can be more easily inserted into or removed from the latch recess 615 by the curved surface when being mounted or dismounted.

Further, the elastic portion 623 is further provided with a protruding latch 626, and the protruding latch 626 can increase friction between the elastic portion 623 and the hand, so that the user can squeeze the elastic portion 623. In addition, the protruding latch 626 may abut against the end of the housing 611, further enhancing the tight connection between the mounting 61 and the connector 62.

Preferably, the inner side wall of the housing 611 is provided with a groove 614, the surface of the body 621 is provided with a protruding guide rail 627 corresponding to the groove 614, when the connector is mounted, the protruding guide rail 627 is inserted into the corresponding groove 614, and the D-shaped head pin on the receiving card 5 is prevented from being inserted into the pin 622 by the positioning action of the protruding guide rail 627 and the groove 614.

Specifically, the mounting seat 61 further includes a mounting portion 615, the mounting portion 615 extends outwards along two sides of the end portion of the housing 611, and the mounting portion 615 is provided with a mounting hole 616, the mounting seat 61 of the present invention can be fixed on the heat dissipation housing 21 in advance through the mounting portion 615, this step can be completed in a production workshop, and when the LED display screen is subsequently mounted, only the connector 62 needs to be inserted into the mounting seat 61, so that the field assembly procedure of the display screen is effectively simplified.

The abutting surface of the mounting seat 61 and the heat dissipation housing 21 is provided with a first waterproof rib 617, and the first waterproof rib 617 is disposed around the mounting cavity 612 to enhance the tightness between the mounting seat 61 and the heat dissipation housing 21, and prevent water flow from entering the display module 1 from the joint 62.

Further, a water bar 65 is arranged between the mounting seat 61, the joint 62 and the heat dissipation shell 21, and the water bar is used for sealing and waterproof connection of the mounting seat 61, the joint 62 and the heat dissipation shell 21. When the mounting seat 61 is fixed on the heat dissipation shell 21, the water bar is arranged between the mounting seat 61 and the heat dissipation shell 21, part of the water bar 65 is exposed, and after the connector 62 is inserted into the mounting seat 61 and connected with the receiving card 5, the end part of the shell 611 is abutted against the exposed water bar 65, namely, the water bar 65 realizes the sealing waterproof connection of the mounting seat 61, the connector 62 and the heat dissipation shell 21.

The above disclosure is only a preferred embodiment of the present invention, and it is needless to say that the scope of the invention is not limited thereto, and therefore, the equivalent changes according to the claims of the present invention still fall within the scope of the present invention.

Claims (7)

1. The outdoor LED display screen comprises a display module, a radiator, a box body and a power supply box, and is characterized in that the box body comprises a panel, the panel is provided with a plurality of installation areas and U-shaped grooves, the installation areas are provided with vacant parts, and the U-shaped grooves are arranged between the installation areas; the display module comprises a bottom shell and a receiving card, the bottom shell is fixed on an installation area of the panel through a lock, the power box is arranged on the U-shaped groove and comprises a sending card, the display module is in conductive connection with the power box through a buckle type connector, the power box reduces the voltage to a preset value and provides the voltage for the display module, and the sending card sends a display signal to the receiving card;

the radiator comprises a radiating shell and a ventilation device, wherein the radiating shell is arranged on the display module with the exposed blank part, a radiating channel is arranged on the back surface of the radiating shell, and the ventilation device is arranged in the radiating channel so as to accelerate the air flowing in the radiating channel;

The buckle type connector comprises a mounting seat and a connector, wherein the mounting seat is fixed on the radiator, and the connector is detachably connected with the mounting seat;

One end of the heat dissipation channel is an air inlet, the other end of the heat dissipation channel is an air outlet, the heat dissipation channel is divided into an air inlet channel and an air outlet channel by a ventilation device arranged in the heat dissipation channel, air enters from the air inlet, sequentially passes through the air inlet channel, the ventilation device and the air outlet channel, and finally is discharged from the air outlet;

The back of the heat dissipation shell is provided with a first heat dissipation rib and a second heat dissipation rib, wherein the first heat dissipation rib is arranged on the outer side of the second heat dissipation rib and forms the heat dissipation channel with the second heat dissipation rib;

At least one third heat dissipation rib is arranged in the air inlet channel and is arranged at a wind direction turning position of the air inlet channel so as to divide the air inlet channel at the position into at least two paths; at least one fourth heat dissipation rib is arranged in the air outlet channel and is arranged at a wind direction turning position of the air outlet channel so as to divide the air outlet channel at the position into at least two paths;

The mounting seat comprises a shell, a mounting cavity is arranged in the shell, clamping empty parts are arranged on two sides of the shell, the mounting cavity penetrates through the shell, and the clamping empty parts are communicated with the mounting cavity;

The connector comprises a body, a plug part and an elastic part, wherein the plug part is arranged at one end of the body, one end of the elastic part is connected to the side wall of the body, a deformation vacancy part is arranged between the elastic part and the side wall of the body, and a buckling protrusion is arranged on the side wall, far away from the body, of the elastic part.

2. The outdoor LED display screen of claim 1, wherein the front surface of the heat dissipating housing is provided with a heat dissipating boss, and the position of the heat dissipating boss corresponds to the position of the heat generating element of the receiving card, so that heat of the heat generating element is transferred to the heat dissipating housing through the heat dissipating boss;

The distance between the heat dissipation boss and the heating element is 0.2-0.8 cm, and heat conduction glue is filled between the heat dissipation boss and the heating element.

3. The outdoor LED display screen of claim 1, wherein the display module further comprises a panel, a PCB board, a light-blocking plate and an optical lens, the bottom case comprises a bottom plate and a side plate surrounding the bottom plate, the front surface of the bottom plate is provided with a first mounting post, a second mounting post and a grid protrusion structure, the first mounting post is higher than the grid protrusion structure, and the inner side wall of the side plate is provided with a bottom plate boss; the optical lens comprises a lens substrate, a lens group and a lens positioning column, wherein the lens group comprises a light emitting part and a light guide column, the light emitting part is arranged on the front surface of the lens substrate, and the positioning column and the light guide column are arranged on the back surface of the lens substrate;

the PCB is arranged on the first mounting column, so that a preset distance is reserved between the grid protruding structure and the PCB, and the light isolation plate is arranged on the base plate boss to be arranged above the PCB;

the second mounting column is used for fixing the optical lens on the light isolation plate, clamping the light isolation plate and the PCB between the optical lens and the bottom shell, and inserting the bottom of the lens positioning column into the PCB, wherein the light guide column and the SMD light source on the PCB are in the same straight line.

4. The outdoor LED display of claim 3, wherein the light-exiting portion has an incident plane and a light-exiting surface, the incident plane being perpendicular to a horizontal plane, the light-exiting surface intersecting the horizontal plane to form a first curve, the first curve having a total reflection segment and a refraction segment adjacent to the total reflection segment, at least a portion of light incident from the incident plane being totally reflected at the total reflection segment and exiting through the adjacent refraction segment after being totally reflected;

the light-emitting surface and the vertical surface intersect to form a second curve, the vertical surface is perpendicular to the incident plane and the horizontal plane respectively, and the second curve protrudes towards the direction far away from the incident plane.

5. The outdoor LED display screen of claim 1, wherein the abutting surface of the mounting base and the heat dissipation shell is provided with a first waterproof rib, and the first waterproof rib is arranged around the mounting cavity;

the waterproof heat dissipation device is characterized in that a water bar is arranged among the mounting seat, the connector and the heat dissipation shell, and the water bar is used for sealing and waterproof connection of the mounting seat, the connector and the heat dissipation shell.

6. The outdoor LED display of claim 1, wherein the case further comprises a profile, the profile being disposed around the panel to form a case structure;

the power supply box is in conductive connection with the display module through a power supply signal wire, one end of the power supply signal wire is connected to the connector, the other end of the power supply signal wire is connected to the power supply box, and the power supply signal wire is hidden in the U-shaped groove;

the power box provides the display module with a voltage drop from 220V to 48V.

7. The outdoor LED display screen of claim 1, wherein the lock comprises a first connecting portion, a second connecting portion and a limiting boss, wherein the side wall of the first connecting portion is provided with at least one limiting protrusion, the limiting protrusion extends outwards along the side wall of the first connecting portion, the limiting boss is arranged between the first connecting portion and the second connecting portion, extends outwards around the side wall of the connecting portion of the first connecting portion and the second connecting portion, the limiting boss is clamped on the bottom shell, and the limiting protrusion is clamped on the panel to fasten the display module on the panel;

The first connecting part, the second connecting part and the limiting boss are integrally formed through injection molding, and the material of the first connecting part, the second connecting part and the limiting boss is plastic or PP.