CN211349985U

CN211349985U - High-heat-dissipation LED display screen

Info

Publication number: CN211349985U
Application number: CN202020062273.XU
Authority: CN
Inventors: 周厚祥
Original assignee: Hubei Jingruida Electronic Technology Co ltd
Current assignee: Hubei Jingruida Electronic Technology Co ltd
Priority date: 2020-01-13
Filing date: 2020-01-13
Publication date: 2020-08-25
Anticipated expiration: 2030-01-13

Abstract

The utility model discloses a high-heat-dissipation LED display screen, which comprises a shell and a display screen main body arranged in the shell, wherein the bottom of the shell is provided with an air inlet, and the upper part of the air inlet is provided with a suction fan; an air outlet is formed in the side face of the shell and is inclined upwards; the heat dissipation device comprises a shell and is characterized in that a heat dissipation cavity is formed in the top of the shell, heat dissipation fins are arranged at the bottom of the heat dissipation cavity, and shutters are arranged on four sides of the heat dissipation cavity. The utility model uses the suction fan of the air inlet to suck the cold air flow of the external environment into the shell, the cold air flow enters from the lower part of the shell and flows upwards to expel the hot air flow, thereby driving the heat in the shell to be discharged through the air outlet arranged on the side surface, meanwhile, the heat collected at the top is transferred into the heat dissipation cavity through the radiating fins and then discharged through the shutters on the four sides of the heat dissipation cavity; the utility model discloses an adopt the cooling heat dissipation mode of forced convection, provide smooth and easy heat conduction route between inside heat source of casing and external environment, improve the radiating efficiency.

Description

High-heat-dissipation LED display screen

Technical Field

The utility model relates to a LED display screen technical field specifically is a high radiating LED display screen.

Background

As a novel outdoor advertisement propagation medium, the LED display screen needs to cope with various severe weather, wherein the heat dissipation performance is an important index of the LED display screen. Because outdoor environment temperature changes greatly, in addition, the display screen generates certain heat when working, if the environment temperature is too high and the heat dissipation is poor, the integrated circuit is likely to work abnormally and even be burnt out, and thus the display system can not work normally.

Chinese patent publication No. CN209729375U discloses an LED display screen with good heat dissipation effect, which comprises a screen, the side wall of the screen is clamped with densely distributed heat dissipation copper sheets, the bottom of the screen is fixedly connected with a bottom plate, the bottom of the bottom plate is clamped with a connecting rod, the bottom of the connecting rod is fixedly connected with a foot seat, the back of the screen is fixedly connected with a telescopic rod, the end part of the telescopic rod is connected with a baffle shell, the inner diameter of the blocking shell is larger than the outer diameter of the screen, the heat dissipation area of the screen is increased by the heat dissipation copper sheet clamped on the back surface of the screen, the heat dissipation is accelerated, the fan can accelerate the convection of cold air and hot air of the screen, meanwhile, the air flow generated by the fan generates a reaction force on the blocking shell, so that the blocking shell moves towards one side far away from the screen, the blocking shell moves towards one side of the screen under the tension of the spring, hot air between the blocking shell and the screen is extruded out, and the heat dissipation effect of the display screen is further improved. This patent utilizes the air supply that the fan produced inhomogeneous, and it has certain directionality to blow, and local heat transfer is strong, is applicable to the more concentrated condition of device that generates heat, drives integrative LED display screen like the lamp.

Chinese patent publication No. CN209765964U discloses a backlight heat dissipation structure for LED display screen, which comprises a housing, an LED screen body is arranged on one side inside the shell, a heat conduction fin is fixed on one side of the LED screen body, a box body is arranged at one side position of the inner part of the shell, which is close to the heat-conducting fins, the box body and the heat-conducting fins are clamped and fixed through clamping grooves, a water flow layer is filled in the box body, limiting rods are fixed on two sides of the shell, sleeves are sleeved outside the two limiting rods, and one side of the outer part of the limiting rod, which is close to the sleeve, is sleeved with a spring, the contact area between the heat conducting fin and the box body can be increased through the clamping groove, so that the heat-conducting fins can quickly transfer the heat of the LED screen body and be absorbed by the water flow layer, so as to improve the overall heat dissipation efficiency of the LED screen body and prolong the service life of the LED screen body. This patent adopts the natural cooling radiating mode, improves the radiating efficiency through increase heat dissipation area of contact, and whole heat-sinking capability is relatively poor.

At present, the LED display screen box is a better heat dissipation mode by comprehensively considering from a plurality of angles such as use reliability, maintenance cost and the like and carrying out forced convection cooling and heat dissipation by using a fan.

Disclosure of Invention

The utility model aims at the problem that prior art exists, provide a high radiating LED display screen, adopt forced convection cooling radiating mode, provide smooth and easy heat conduction route between heat source and external environment, improve the radiating efficiency.

In order to achieve the above object, the utility model adopts the following technical scheme:

the LED display screen with high heat dissipation comprises a shell and a display screen main body arranged in the shell, wherein the bottom of the shell is provided with an air inlet, and the upper part of the air inlet is provided with a suction fan; an air outlet is formed in the side face of the shell and is inclined upwards; the heat dissipation device comprises a shell and is characterized in that a heat dissipation cavity is formed in the top of the shell, heat dissipation fins are arranged at the bottom of the heat dissipation cavity, and shutters are arranged on four sides of the heat dissipation cavity.

Preferably, the air inlet is provided with a filter screen.

Preferably, the top of the shell is provided with a diversion trench.

Preferably, two ends of the diversion trench are respectively provided with a rain shielding edge.

Preferably, the end of the rain shielding edge is provided with a vertically downward deflector.

Preferably, in the vertical direction, the bottom position of the flow deflector is lower than the position of the air outlet.

Preferably, the air outlets are provided with at least two air outlets respectively located on two side surfaces of the shell.

Preferably, the air outlet is provided with a filter screen.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a high radiating LED display screen, including the casing with arrange the display screen main part in the casing, the casing bottom is provided with the air intake, air intake upper portion is equipped with the extraction fan, through the extraction fan with the cold air current suction of external environment in the casing, the cold air current gets into from the casing below, upward flow extrudes the heat in the casing; the side surface of the shell is provided with an air outlet, the air outlet is inclined upwards, the cold airflow drives heat in the shell to be discharged through the air outlet, and the air outlet arranged obliquely upwards is more favorable for discharging the heat along the flow direction of the cold airflow, so that the heat dissipation efficiency is improved; the heat dissipation device comprises a shell, and is characterized in that a heat dissipation cavity is arranged at the top of the shell, heat dissipation fins are arranged at the bottom of the heat dissipation cavity, shutters are arranged on four sides of the heat dissipation cavity, heat collected at the top is transferred into the heat dissipation cavity through the heat dissipation fins and then discharged through the shutters on the four sides of the heat dissipation cavity, and a smooth heat conduction path is provided between a heat source in the shell and the external environment by adopting a convection cooling heat dissipation mode, so that the heat dissipation efficiency is improved; the utility model discloses heat radiation structure does not change the structure of display screen main part itself, easily realizes, and the range of application is wider.

Drawings

Fig. 1 is a schematic structural diagram of a high heat dissipation LED display according to an embodiment of the present invention;

fig. 2 is a schematic view of a diversion trench according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a high heat dissipation LED display according to another embodiment of the present invention.

In the figure: 1. a housing; 2. a display screen main body; 3. an air inlet; 4. an exhaust fan; 5. an air outlet; 6. a heat dissipation cavity; 7. a heat sink; 8. a blind window; 9. a rain shielding edge; 10. a filter screen; 11. a column; 12. a diversion trench; 13. and a flow deflector.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a high-heat-dissipation LED display screen, as shown in figures 1 to 2, comprising a shell 1 and a display screen main body 2 arranged in the shell 1, wherein the bottom of the shell 1 is provided with an air inlet 3, and the upper part of the air inlet 3 is provided with a suction fan 4; an air outlet 5 is formed in the side face of the shell 1, and the air outlet 5 is inclined upwards; the heat dissipation device is characterized in that a heat dissipation cavity 6 is arranged at the top of the shell 1, heat dissipation fins 7 are arranged at the bottom of the heat dissipation cavity 6, and shutters 8 are arranged on four side faces of the heat dissipation cavity 6. The utility model uses the suction fan 4 of the air inlet 3 to suck the cold air flow of the external environment into the shell 1, the cold air flow enters from the lower part of the shell 1 and flows upwards to expel the hot air flow, thereby driving the heat in the shell 1 to be discharged through the air outlet 5 arranged on the side surface, meanwhile, the heat collected at the top is transmitted into the heat dissipation cavity 6 through the radiating fins 7 and then discharged through the shutters 8 on the four sides of the heat dissipation cavity 6; the utility model discloses an adopt the cooling heat dissipation mode of forced convection, provide smooth and easy heat conduction route between 1 inside heat source of casing and external environment, improve the radiating efficiency.

In the implementation, the housing 1 is installed on the ground through the upright post 11, and the height of the upright post 11 is at least one meter, so as to prevent the suction fan 4 of the air inlet 3 from sucking sundries on the ground into the housing 1.

In order to prevent external dust or other impurities from entering the housing 1 through the air inlet 3, a filter screen 10 is disposed at the air inlet 3, and the filter screen 10 prevents foreign matters in the external environment from entering the housing 1. In particular, a honeycomb plastic filter screen may be used.

The outdoor LED display screen is installed outdoors and is invaded by rainwater, and besides the strict requirement of the LED display screen on water resistance, the damage of rainwater to the display screen is reduced as much as possible. Consequently, this embodiment sets up guiding gutter 12 at 1 top of casing, passes through guiding gutter 12 with the rainwater and discharges fast, avoids the rainwater to fall to 1 top of casing and then flows through the display screen from the top openly, influences display effect, causes display screen infiltration risk simultaneously.

Further, two ends of the diversion trench 12 are respectively provided with a rain shielding edge 9. The rain shielding edge 9 further prevents rainwater from directly washing the surface of the shell, and the waterproof performance of the display screen is protected from being damaged.

Further, as shown in fig. 3, the end of the rain shelter rim 9 is provided with a vertically downward deflector 13. And in the vertical direction, the bottom position of the flow deflector 13 is lower than the position of the air outlet 5. This is provided to prevent rainwater falling from the rain shielding edge 9 from being blown into the air outlet 5 by wind, and further protect the display screen main body 2 from being damaged by rainwater.

In order to improve the heat dissipation efficiency of the air outlets 5, at least two air outlets 5 may be symmetrically disposed on the left and right sides of the housing 1. The air outlet channels of all the air outlets 5 are arranged in the upward inclined direction, so that the air flow from bottom to top is ensured to smoothly pass through the air outlets, and the heat dissipation efficiency is improved.

In order to prevent external dust or other impurities from entering the shell through the air outlet, the air outlet is provided with a filter screen, and foreign matters in the external environment are blocked by the filter screen from entering the shell. In particular, a honeycomb plastic filter screen may be used.

In practical application, in order to improve the heat dissipation efficiency, a lamp-driver separated installation mode can be adopted in the display screen main body, and the LED lamp and the driver are respectively integrated on different PCB boards.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The LED display screen with high heat dissipation comprises a shell and a display screen main body arranged in the shell, and is characterized in that an air inlet is formed in the bottom of the shell, and an exhaust fan is arranged at the upper part of the air inlet; an air outlet is formed in the side face of the shell and is inclined upwards; the heat dissipation device comprises a shell and is characterized in that a heat dissipation cavity is formed in the top of the shell, heat dissipation fins are arranged at the bottom of the heat dissipation cavity, and shutters are arranged on four sides of the heat dissipation cavity.

2. The high-heat-dissipation LED display screen according to claim 1, wherein the air inlet is provided with a filter screen.

3. The high heat dissipation LED display screen of claim 1, wherein the top of the casing is provided with a flow guiding groove.

4. The high-heat-dissipation LED display screen as claimed in claim 3, wherein two ends of the flow guide grooves are respectively provided with a rain shielding edge.

5. The high-heat-dissipation LED display screen as claimed in claim 4, wherein a vertically downward deflector is arranged at the end of the rain shielding edge.

6. The high-heat-dissipation LED display screen as recited in claim 5, wherein the bottom of the flow deflector is lower than the air outlet in the vertical direction.

7. The LED display screen with high heat dissipation performance as recited in claim 1, wherein at least two air outlets are disposed on two side surfaces of the housing.

8. The high-heat-dissipation LED display screen according to claim 7, wherein the air outlet is provided with a filter screen.