CN212367817U

CN212367817U - Color LED dot matrix display screen for indoor image-text display

Info

Publication number: CN212367817U
Application number: CN202021372094.2U
Authority: CN
Inventors: 单晓东; 温文涛; 吴光叶
Original assignee: Shenzhen Titans Technology Co ltd
Current assignee: Shenzhen Titans Technology Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-01-15
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to a colored LED dot matrix display screen for indoor picture and text shows, it includes the screen body, set up in the kuppe at screen body back and be used for pumping the air-blast device of kuppe into with the air current, the bottom of kuppe is provided with the air intake that is linked together with the air-blast device, the top of kuppe is provided with the inside and outside air outlet of a plurality of intercommunication kuppes, the back of the screen body is provided with heat dissipation mechanism, heat dissipation mechanism includes the metal sheet and a plurality of radiating fin that set up on the metal sheet of laminating mutually with the back of the screen body, and is adjacent mutually support between the radiating fin and form the runner that the air feed stream flowed to the air outlet. This application has the advantage that the radiating effect is good.

Description

Color LED dot matrix display screen for indoor image-text display

Technical Field

The application relates to the field of LED display screens, in particular to a color LED dot matrix display screen for indoor image-text display.

Background

At present, various large-screen LED advertisement screens for playing advertisements are usually arranged in commercial buildings and are usually formed by splicing a plurality of LED display panels. The LED display screen is a flat panel display and consists of small LED lamps, and each LED lamp can generate certain heat when in use. Compared with a text LED display screen, the high-density display screen for indoor image-text display has the advantages that the requirement of image display on pixels is greatly increased, and particularly, each pixel of a color LED dot matrix display screen consists of three LED lamps, so that the number of the required LED lamps is huge, and the heat generation of the LED lamps is also increased rapidly. Compared with an outdoor environment, the LED dot matrix display screen has the characteristic of poor indoor ventilation effect, and the failure probability of electronic components is increased due to heat generated and accumulated by the LED dot matrix display screen, so that the reliability of the LED dot matrix display screen is reduced.

SUMMERY OF THE UTILITY MODEL

The application provides a colored LED dot matrix display screen for indoor picture and text demonstration, has the good advantage of radiating effect.

The utility model provides a colored LED dot matrix display screen for indoor picture and text shows, includes the screen body, sets up in the kuppe at screen body back and is used for pumping the air-blast device of kuppe into with the air current, the bottom of kuppe is provided with the air intake that is linked together with the air-blast device, the top of kuppe is provided with the inside and outside air outlet of a plurality of intercommunication kuppes, the back of the screen body is provided with heat dissipation mechanism, heat dissipation mechanism includes the metal sheet that laminates mutually with the back of the screen body and a plurality of radiating fin that set up on the metal sheet, and is adjacent mutually support between the radiating fin and form the runner that the air feed stream flowed to the.

Through adopting above-mentioned technical scheme, the metal sheet has good heat conductivility, can absorb the heat that the screen body produced to in conducting the heat to radiating fin. The arrangement of the radiating fins is dense, and the radiating fins have a higher surface area compared with the metal plate. When the heat exchanger is used, the air blowing device blows air flow outside the air guide sleeve into the air guide sleeve through the air inlet, and the air flow entering the air guide sleeve enters the flow channel and exchanges heat with the heat dissipation fins. Because the specific surface area of the radiating fin is large, the radiating fin can quickly exchange heat with air flow, and therefore the purpose of cooling the screen body is achieved.

Preferably, the blower device comprises a multi-wing wind wheel arranged inside the air guide sleeve and at the air inlet, and a motor for driving the multi-wing wind wheel to rotate, and the multi-wing wind wheel blows outside air into the flow channel through the air inlet.

By adopting the technical scheme, the multi-wing wind wheel has the advantages of small volume, low noise, uniform wind transmission and only one motor for driving.

Preferably, still include the liquid cooling device, the liquid cooling device is including reciprocating the cooling tube of wearing to locate on radiating fin, set up the cooling tube in external air conditioning wind channel and set up the circulating pump on the cooling tube, be provided with the condensate in cooling tube and the cooling tube, the cooling tube penetrates the kuppe and is linked together with the cooling tube, circulating pump drive condensate circulates between cooling tube and flows.

Through adopting above-mentioned technical scheme, the heat of radiating fin is absorbed to the circulation liquid in the cooling tube to flow to the cooling tube under the circulating pump promotes, and the temperature in the air conditioning wind channel is lower, and the heat of the circulation liquid in the cooling tube outwards gives off, and the temperature reduces, and the recirculation is in the cooling tube, thereby reaches the purpose to radiating fin cooling.

Preferably, the cooling pipe comprises a plurality of transverse sections arranged in parallel and a longitudinal section connecting adjacent transverse sections, and each transverse section sequentially penetrates through each radiating fin and is connected with the radiating fin.

By adopting the technical scheme, the transverse section is abutted against the radiating fins, and the internal circulating liquid can absorb the heat of the radiating fins so as to cool the radiating fins.

Preferably, the pump liquid direction of the circulating pump is the direction in which the condensate flows from the cooling pipe close to the air outlet to the cooling pipe close to the air inlet.

By adopting the technical scheme, from the air inlet to the air outlet, the air flow continuously exchanges heat with the radiating fins, the temperature continuously rises, the flowing direction of the circulating liquid is opposite to the direction of the air flow, and therefore the circulating liquid and the air flow in an inverse temperature gradient manner, the temperature difference of the circulating liquid and the air flow is large near the air outlet, the cooler circulating liquid cools the hotter air flow, and the heat exchange efficiency is high.

Preferably, the circulating liquid is an antifreeze.

By adopting the technical scheme, the antifreeze can avoid the phenomenon that the cooling pipe and the radiating pipe are solidified and cracked due to over-cooling of air temperature in winter.

Preferably, a plurality of arc-shaped protruding pieces are arranged on the radiating fins, two ends of each arc-shaped protruding piece are integrally connected to the radiating fins and matched with the radiating fins to form holes for air flow to pass through, and two ends of each hole face the air inlet and the air outlet respectively.

Through adopting above-mentioned technical scheme, on the heat on the radiating fin can transmit the arc lug, the arc lug can increase radiating fin's specific surface area to form the turbulent flow in the runner, increase gaseous mobile distance, thereby improve air current and radiating fin's heat transfer effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heat exchange can be rapidly carried out with the airflow, so that the purpose of cooling the screen body is achieved;

2. and the liquid cooling device is arranged to generate combined heat dissipation between the central air-conditioning cooling system and the heat dissipation device, so that the cooling efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a color LED dot matrix display screen for indoor image-text display according to an embodiment of the present application;

fig. 2 is an enlarged view at a in fig. 1.

Description of reference numerals:

1. a screen body;

2. a pod; 21. an air inlet; 22. an air outlet;

3. a heat dissipation mechanism; 31. a metal plate; 32. a heat dissipating fin; 33. a flow channel;

4. a blower device; 41. a multi-wing wind wheel; 42. a motor; 43. an arcuate tab; 44. an eyelet;

5. a liquid cooling device; 51. a cooling tube; 511. a transverse segment; 512. a longitudinal segment; 52. a radiating pipe; 53. a circulation pump;

6. a cold air duct.

Detailed Description

The present application is described in further detail below with reference to fig. 1 and 2.

The embodiment of the application discloses a color LED dot matrix display screen for indoor image-text display. Referring to fig. 1, the color LED dot matrix display screen for displaying indoor pictures and texts comprises a screen body 1, a dome 2 disposed on the back of the screen body 1, a heat dissipation mechanism 3 disposed in the dome 2, a blower 4 for pumping air into the dome 2, and a liquid cooling device 5 connected to the heat dissipation mechanism 3 and an external cold air duct 6.

Referring to fig. 1, the screen body 1 is a square plate as a whole, and has a large number of electronic components on the back thereof for controlling the screen body 1 to emit light to display graphic information. The air guide sleeve 2 is a cover body surrounded by five surfaces, one side of an opening of the air guide sleeve is abutted to the back of the screen body 1, in the embodiment, each surface of the air guide sleeve 2 is a flat plate, and the adjacent surfaces are perpendicular to each other. The bottom surface of the air guide sleeve 2 is provided with an air inlet 21 communicated with the air blowing device 4, and the top surface is provided with a plurality of air outlets 22 communicated with the inside and the outside of the air guide sleeve 2. In this embodiment, the air outlets 22 are round holes and are uniformly arranged on the top surface of the air guide sleeve 2 in an array manner, so as to prevent the mechanical strength of the air guide sleeve 2 from being reduced due to too dense distribution or reduce the air outlet efficiency.

The blower device 4 includes a multi-wing wind wheel 41 located at the air inlet 21 inside the nacelle 2, and a motor 42 for driving the multi-wing wind wheel 41 to rotate. The two ends of the rotating shaft of the multi-wing wind wheel 41 are respectively connected with the left side wall and the right side wall of the air guide sleeve 2 in a rotating mode, the motor 42 is fixedly installed on the air guide sleeve 2 and coaxially connected with the rotating shaft of the multi-wing wind wheel 41, and the motor 42 drives the multi-wing wind wheel 41 to rotate to form a local negative pressure area, so that external air flow is blown into the air guide sleeve 2 through the air inlet. The air flowing at high speed can exchange heat with the screen body 1 quickly, and the air guide sleeve 2 can enable the air flow to cling to the screen body 1 to flow and not to be dispersed outwards, so that the flow speed of the air flow is improved, the heat dissipation efficiency is improved, and the requirement on the power of the motor 42 is reduced.

The heat dissipation mechanism 3 includes a metal plate 31 attached to the back of the screen body 1, and a plurality of heat dissipation fins 32 disposed on the metal plate 31, each heat dissipation fin 32 is disposed in parallel, and adjacent heat dissipation fins 32 are mutually matched to form a flow channel 33 for air flow from the air inlet 21 to the air outlet 22. The metal plate 31 has good heat conductivity, and can absorb heat generated by the screen body 1 and conduct the heat to the heat dissipation fins 32. The heat radiating fins 32 are arranged densely, and have a higher surface area than the metal plate 31. When in use, the air blowing device 4 blows the air flow outside the air guide sleeve 2 into the air guide sleeve 2 through the air inlet 21, and the air flow entering the air guide sleeve 2 enters the flow passage 33 and exchanges heat with the heat dissipation fins 32. Because the specific surface area of the radiating fin 32 is large, heat exchange can be rapidly carried out with the air flow, and therefore the purpose of cooling the screen body 1 is achieved.

Referring to fig. 2, a plurality of arc-shaped protruding pieces 43 are disposed on the heat dissipating fins 32, two ends of each arc-shaped protruding piece 43 are integrally connected to the heat dissipating fins 32, and cooperate with the heat dissipating fins 32 to form an eyelet 44 for airflow to pass through, and two ends of the eyelet 44 face the air inlet 21 and the air outlet 22, respectively. The heat on the heat dissipation fins 32 can be transferred to the arc-shaped protruding pieces 43, the arc-shaped protruding pieces 43 can increase the surface area of the heat dissipation fins 32, turbulent flow is formed in the flow channels 33, the flowing distance of the gas is increased, and therefore the heat exchange effect of the gas flow and the heat dissipation fins 32 is improved.

With continued reference to fig. 1, the liquid cooling device 5 includes a cooling pipe 51 reciprocally disposed through the heat dissipating fins 32, a heat dissipating pipe 52 disposed in the outside cold air duct 6, and a circulating pump 53 disposed on the heat dissipating pipe 52, wherein the cooling pipe 51 and the heat dissipating pipe 52 are disposed with condensed liquid, which is antifreeze in this embodiment. Referring to fig. 1 and 2, the cooling pipe 51 includes a plurality of transverse segments 511 arranged in parallel and a longitudinal segment 512 connecting adjacent transverse segments 511, and each transverse segment 511 sequentially passes through each of the heat dissipating fins 32 and is connected to the heat dissipating fin 32. The heat dissipation pipe 52 penetrates the dome 2 and communicates with the cooling pipe 51, the circulation pump 53 drives the condensate to circulate between the cooling pipe 51 and the heat dissipation pipe 52, and the pumping direction of the circulation pump 53 is the direction in which the condensate flows from the cooling pipe 51 near the air outlet 22 to the cooling pipe 51 near the air inlet 21. The circulating liquid in the cooling pipe 51 absorbs the heat of the radiating fins 32 and flows into the radiating pipe 52 under the driving of the circulating pump 53, while the temperature in the cool air duct 6 is low, the heat of the circulating liquid in the radiating pipe 52 is radiated outwards, the temperature is reduced, and the circulating liquid is recirculated back to the cooling pipe 51, thereby achieving the purpose of cooling the radiating fins 32. In the diversion cavity, the flow direction of the circulating liquid is opposite to the direction of the air flow, so that the circulating liquid flows in an inverse temperature gradient manner, the temperature difference between the circulating liquid and the air flow is large near the air outlet 22, the cooler circulating liquid cools the hotter air flow, and the heat exchange efficiency is high.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A color LED dot matrix display screen for indoor image-text display is characterized by comprising a screen body (1), a flow guide cover (2) arranged at the back of the screen body (1) and a blast device (4) used for pumping air flow into the flow guide cover (2), the bottom of the air guide sleeve (2) is provided with an air inlet (21) communicated with the air blowing device (4), the top of the air guide sleeve (2) is provided with a plurality of air outlets (22) which are communicated with the inside and the outside of the air guide sleeve (2), the back of the screen body (1) is provided with a heat dissipation mechanism (3), the heat dissipation mechanism (3) comprises a metal plate (31) attached to the back of the screen body (1) and a plurality of heat dissipation fins (32) arranged on the metal plate (31), and the heat dissipation fins (32) are adjacent to each other and matched with each other to form a flow channel (33) for air flow to flow from the air inlet (21) to the air outlet (22).

2. The color LED dot matrix display screen for indoor graphic display according to claim 1, wherein the blower device (4) comprises a multi-wing wind wheel (41) arranged inside the air guide sleeve (2) at the air inlet (21) and a motor (42) for driving the multi-wing wind wheel (41) to rotate, and the multi-wing wind wheel (41) blows outside air into the flow channel (33) through the air inlet (21).

3. The color LED dot matrix display screen for indoor graphic display according to claim 1, further comprising a liquid cooling device (5), wherein the liquid cooling device (5) comprises a cooling tube (51) reciprocally penetrating the heat dissipating fin (32), a heat dissipating tube (52) disposed in the external cold air duct (6), and a circulating pump (53) disposed on the heat dissipating tube (52), wherein condensate is disposed in the cooling tube (51) and the heat dissipating tube (52), the heat dissipating tube (52) penetrates the dome (2) and is communicated with the cooling tube (51), and the circulating pump (53) drives the condensate to circularly flow between the cooling tube (51) and the heat dissipating tube (52).

4. The color LED dot matrix display screen for indoor graphic display according to claim 3, wherein the cooling tube (51) comprises a plurality of horizontal segments (511) arranged in parallel and a longitudinal segment (512) connecting adjacent horizontal segments (511), and each horizontal segment (511) sequentially passes through each heat dissipating fin (32) and is connected with the heat dissipating fin (32).

5. The color LED dot matrix display screen for indoor graphic display according to claim 4, wherein the pump liquid direction of the circulating pump (53) is the direction of the condensate flowing from the cooling pipe (51) near the air outlet (22) to the cooling pipe (51) near the air inlet (21).

6. The color LED dot matrix display screen for indoor graphic display according to claim 5, wherein the condensate is an antifreeze.

7. The color LED dot matrix display screen for indoor graphic display according to claim 1, wherein the heat dissipating fins (32) are provided with a plurality of arc-shaped protruding pieces (43), two ends of the arc-shaped protruding pieces (43) are integrally connected to the heat dissipating fins (32) and are matched with the heat dissipating fins (32) to form holes (44) for air flow to pass through, and two ends of the holes (44) respectively face the air inlet (21) and the air outlet (22).