CN213073443U

CN213073443U - Display device

Info

Publication number: CN213073443U
Application number: CN202022046974.7U
Authority: CN
Inventors: 刘栋; 龚立伟; 张国建; 周杨; 周伟
Original assignee: Chongqing Kangjia Photoelectric Technology Research Institute Co Ltd
Current assignee: Chongqing Kangjia Photoelectric Technology Research Institute Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-04-27
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a display device, wherein, include: the heat dissipation structure is arranged on the substrate and comprises a plurality of heat dissipation fins, and the heat dissipation fins are used for dissipating heat of the substrate; the first fan is positioned on the side edge of the substrate and used for blowing air to the radiating fins; the heat dissipation structures are arranged in a plurality and are arranged along the air outlet direction of the first fan; the number of the radiating fins on the radiating structure is in direct proportion to the distance from the radiating structure to the first fan. The display device of this application is different through the fin figure that sets up on the different position heat radiation structure to realize the real-time cooling rate on each heat radiation structure of balance, make the display device keep unanimous relatively at the whole temperature on each position of working process base plate, be favorable to maintaining the homogeneity that shows.

Description

Display device

Technical Field

The utility model relates to a show technical field, especially relate to a display device.

Background

The research in the field of Light Emitting Diode (LED) display panel technology is changing day by day, and the market competition is very strong. With the recent maturation of the mini LED technology and the Micro LED technology, people tend to splice a plurality of display panels to work together when manufacturing large-sized televisions and other related products.

However, when the spliced display panels are used, heat dissipation is uneven, so that the problem of poor display uniformity caused by overlarge working temperature difference among the panels is easily caused.

Accordingly, the prior art is yet to be improved and developed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art not enough, the utility model aims at providing a display device aims at optimizing the display panel's of concatenation heat dispersion, and operating temperature difference reduces between the time-lapse board, maintains the homogeneity that the display screen shows.

The technical scheme of the utility model as follows:

a display device, comprising: the heat dissipation structure is arranged on the substrate and comprises a plurality of heat dissipation fins, and the heat dissipation fins are used for dissipating heat of the substrate; the first fan is positioned on the side edge of the substrate and used for blowing air to the radiating fins; the heat dissipation structures are arranged in a plurality and are arranged along the air outlet direction of the first fan; the number of the radiating fins on the radiating structure is in direct proportion to the distance from the radiating structure to the first fan. The number of the radiating fins on the radiating structures at different positions is different, so that the real-time cooling speed of the display device at each position of the substrate in the working process is kept relatively consistent, and the uniformity of display is improved.

The display device, wherein, a plurality of fin parallel arrangement, it crosses the wind groove to form between the adjacent fin, the air-out direction of first fan is just right the wind groove crosses. The first fan can increase the air flow speed in the air passing groove, so that heat dissipation is accelerated, air flows smoothly in the air passing groove when the air outlet direction is opposite to the air passing groove, air is replaced quickly, and cooling is further accelerated.

The display device, wherein, heat radiation structure still includes heat conduction base, heat conduction base is fixed on the base plate, a plurality of the fin is located heat conduction base deviates from one side of base plate. The heat conduction base further disperses heat evenly to each radiating fin, and the heat dissipation is accelerated, and simultaneously a plurality of radiating fins can be installed at one time, and the installation process is simplified.

In the display device, the heat conducting base and the plurality of heat radiating fins on one heat radiating structure are integrally formed. The integrated structure is more convenient to conduct heat and firmer and more stable.

The display device is characterized in that the substrate comprises a plurality of back plates, and the plurality of back plates are arranged side by side along the air outlet direction of the first fan; one of the back plates is provided with one of the heat dissipation structures. The back plate and the heat dissipation structure are arranged in a one-to-one manner, so that the heat dissipation speed of each position on a single back plate is close, the temperature of each position of the substrate is further kept close in the using process, and the uniformity of display is further improved.

The display device, wherein, the display device still includes the heat-conducting layer, the heat-conducting layer set up in the base plate with between the heat radiation structure, the heat-conducting layer is used for transmitting the heat of base plate arrives on the heat radiation structure. The heat dissipation structure and the substrate often have thermal resistance, so the speed of absorbing the heat of the substrate is limited, and the heat conduction layer with higher heat absorption speed is arranged to accelerate the heat dissipation on the substrate and prevent the temperature of the substrate from being overhigh.

The display device, wherein the heat conducting layer comprises a heat conducting interface material layer. The heat-conducting interface material can fill the air gap between the heat-radiating structure and the substrate, so that the heat conduction is accelerated.

The display device, wherein, the last locating part that is equipped with of heat radiation structure, be equipped with on the heat-conducting layer with the spacing perforation of locating part adaptation, the locating part passes spacing perforation and with the base plate is connected. The heat conduction layer is limited on the heat dissipation structure, the sliding of the heat conduction layer caused by expansion and contraction in long-term use is reduced, and the relative position of the heat conduction layer and the heat dissipation structure is maintained.

The display device, wherein, display device still includes the second fan, the second fan set up in the base plate is kept away from one side of first fan, the air-out direction of second fan with the air-out direction of first fan is the same. The second fan can be with the air suction that has absorbed the heat for reduce the temperature in the groove of crossing wind, further accelerate the heat dissipation.

The display device, wherein the substrate comprises one or more of an organic light emitting diode display panel, a mini LED display panel and a Micro LED display panel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display device according to the present invention;

fig. 2 is an exploded view of the display device of the present invention;

fig. 3 is a top view of the display device of the present invention.

10, a substrate; 20. a heat dissipation structure; 21. a thermally conductive base; 22. a heat sink; 23. an air passing groove; 24. a heat conductive layer; 25. a limiting member; 30. a first fan; 40. and a second fan.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the prior art, an LED screen is a flat panel display, and is composed of small LED module panels, and is used for displaying various information such as text, image, video, and video signals, and the LED display screen has high brightness, a wider viewing angle, and a better color restoration capability than the LCD screen, and the LED screen brushing machine is generally used in airports, markets, hotels, high-speed rails, subways, cinemas, exhibitions, office buildings, and the like, and has a high target customer consumption capability and a huge advertising value. The existing LED display screen develops a mini LED technology, a Micro LED technology and other novel display panel technologies, and then a display screen with smaller size and higher resolution is obtained, so that the living needs of people are met.

When a large-size display screen is manufactured, the large-size display screen needs to be spliced according to specific length to manufacture the LED spliced screen. After the plurality of LED spliced screens are spliced, the LED spliced screens are cooled through a fan, however, the working temperature difference between the LED screens possibly occurs due to the fact that the fan and the distance between each LED screen are different, and the problem of poor display uniformity can be caused when the temperature difference is too large.

Referring to fig. 1, a display device is disclosed as an embodiment of the present application, including: the fan comprises a substrate 10, a heat dissipation structure 20 and a first fan 30, wherein the heat dissipation structure 20 is arranged on the substrate 10, the heat dissipation structure 20 comprises a plurality of heat dissipation fins 22, and the heat dissipation fins 22 are used for dissipating heat of the substrate 10; the first fan 30 is positioned at a side of the substrate 10 and used for blowing air to the heat sink 22; a plurality of heat dissipation structures 20 are arranged, and the plurality of heat dissipation structures 20 are arranged along the air outlet direction of the first fan 30; the number of the heat dissipation fins 22 on the heat dissipation structure 20 is proportional to the distance from the heat dissipation structure 20 to the first fan 30.

When the display device disclosed by the application works, heat is continuously generated on the substrate 10, the heat is conducted from the substrate 10 to the heat dissipation structure 20, the plurality of heat dissipation fins 22 are arranged to disperse the heat on the substrate 10, the surface area of the heat dissipation structure 20 is increased, the heat dissipation speed is increased, meanwhile, the first fan 30 is started to blow air to the heat dissipation fins 22, the heat on the surfaces of the heat dissipation fins 22 is taken away through air flow, the heat dissipation structure 20 is cooled, and further the temperature on the substrate 10 is reduced; because the heat dissipation structure 20 at the side far from the first fan 30 is contacted with the hot air blown from the heat dissipation structure 20 at the side near the first fan 30, the temperature difference between the air and the heat dissipation structure 20 is small, the cooling effect is weak, and the more the number of the heat dissipation fins 22 of the heat dissipation structure 20 arranged at the side far from the first fan 30 is, the more the heat dissipation performance of the heat dissipation structure 20 is increased, so that the real-time cooling speed on each heat dissipation structure 20 on the balance substrate 10 is realized, the temperature difference of the whole display device on each substrate 10 is kept relatively small in the working process, the uniformity of display is maintained, and the display effect is improved; meanwhile, the overall heat dissipation efficiency of the substrate 10 is improved, the overheating of the substrate 10 is reduced, and the long-term use of the display device is maintained.

Further, as an implementation manner of this embodiment, a plurality of the heat dissipation fins 22 are arranged in parallel, an air passing groove 23 is formed between adjacent heat dissipation fins 22, and the air outlet direction of the first fan 30 is opposite to the air passing groove 23. The first fan 30 can increase the air flowing speed, so that the high-temperature air which has absorbed heat flows away, and more low-temperature air is sucked, the temperature difference between the air and the heat dissipation structure 20 is increased, the heat dissipation speed of the heat dissipation structure 20 is increased, the air outlet direction is opposite to the air passing groove 23, the air is smooth and unobstructed in the air passing groove 23, the high air speed is maintained, the air can be replaced quickly, and the cooling is further accelerated.

Specifically, as an implementation manner of this embodiment, the heat dissipation structure 20 further includes a heat conduction base 21, the heat conduction base 21 is fixed on the substrate 10, and the plurality of heat dissipation fins 22 are disposed on one side of the heat conduction base 21 departing from the substrate 10. The heat on the substrate 10 is uniformly conducted to the radiating fins 22 by designing the heat conducting base 21, the surface area of the radiating structure 20 contacted with air is increased by the plurality of radiating fins 22, the heat exchange speed of the radiating structure 20 and the air is increased, the temperature of the substrate 10 is favorably and rapidly reduced, and therefore heat dissipation is realized. In addition, the heat conducting base 21 connects the plurality of radiating fins 22, and the installation can be completed at one time, so that the operation process is simple and convenient.

As shown in fig. 2, as an implementation manner of this embodiment, the heat conducting base 21 and the plurality of heat dissipation fins 22 on one heat dissipation structure 20 are integrally formed, so that the integrally formed heat dissipation structure 20 facilitates heat conduction and has a more robust and stable structure.

Specifically, the substrate 10 includes a plurality of back plates, and the plurality of back plates are arranged side by side along the air outlet direction of the first fan 30; one of the heat dissipation structures 20 is disposed on one of the back plates. When a large-size display panel is manufactured, for example, in the manufacturing process of a mini LED panel or a Micro LED panel, a plurality of back plates are arranged side by side, the phenomenon that a fan arranged on the side face of each back plate cannot uniformly radiate the back plates is more obvious at the moment, a plurality of heat dissipation structures 20 are arranged corresponding to the plurality of back plates, so that the heat dissipation speed of each part of one back plate is equal, meanwhile, the heat dissipation speed of each back plate on the whole substrate 10 is also similar, the temperature of each part is kept to be similar in the using process of the large-size display panel, and the uniformity of display is improved.

As shown in fig. 2, as an implementation manner of the present embodiment, the first fan 30 is provided in a plurality, and the first fans 30 are uniformly arranged along the length direction of the substrate 10. The fan in the embodiment may be a fan, and the rotation of the fan generates airflow to pass through the surface of the heat dissipation structure 20 for cooling; in this embodiment, the substrate 10 is rectangular, the display panel is also rectangular, and the heat dissipation fins 22 are arranged side by side along the width direction of the display panel, and the air passing grooves 23 are formed to extend along the width direction of the display panel, so that the fan is disposed on one side of the long side of the display panel, and blows air out toward the width direction of the display panel, and because the long side of the display panel is longer, the plurality of first fans 30 are disposed to balance the wind force along the length direction of the display panel, the flowing speed of the air flow on each display panel tends to be the same, and further the heat dissipation speed on each heat dissipation structure 20 tends to be the same, so that the overall temperature difference on the display device is reduced, and the display uniformity of the display device is maintained.

Further, as shown in fig. 2, as an implementation manner of the present embodiment, the heat dissipation structure 20 further includes a heat conduction layer 24, where the heat conduction layer 24 is disposed between the substrate 10 and the heat dissipation structure 20, and the heat conduction layer 24 is used for transferring heat of the substrate 10 to the heat dissipation structure 20. Wherein the thermally conductive layer 24 comprises a layer of thermally conductive interface material. The heat dissipation structure 20 is usually made of plastic, metal, non-polar non-metal material, etc., and there is thermal resistance between the heat dissipation structure 20 and the substrate 10, and the two solid materials are in contact, the interfaces are not likely to be in complete contact, some air is often mixed in the gap, and the heat conductivity coefficient of the air is very small, so the heat conduction speed between the heat dissipation structure 20 and the substrate 10 is limited, the heat conduction layer 24 is increased, the heat dissipation of the substrate 10 is accelerated, and the excessive heat on the substrate 10 is quickly transferred to the heat dissipation structure 20; the Thermal Interface Material (TIM), such as silicone, is used to accelerate the heat conduction between the substrate 10 and the heat conducting base 21, further accelerate the heat dissipation of the substrate 10, and prevent the substrate 10 from being damaged due to too high heat.

Specifically, as an implementation manner of this embodiment, the heat dissipation structure 20 is provided with a limiting part 25, the heat conduction layer 24 is provided with a limiting through hole (not shown in the figure) adapted to the limiting part 25, and the limiting part 25 passes through the limiting through hole and is connected to the substrate 10, so as to limit the position of the heat conduction layer 24 relative to the heat dissipation structure 20. In this embodiment, the heat conducting base 21 may have a plurality of screw through holes, a plurality of fixing blocks, i.e., limiting members 25, are disposed on one side of the heat conducting base 21 facing the heat conducting layer 24, the fixing blocks are uniformly disposed on the heat conducting base 21, and in this embodiment, the fixing blocks are disposed at the edge of the heat conducting base 21; a screw fixing hole, namely a limiting through hole, is formed in the center of the fixing block, the screw fixing hole is overlapped with the screw through hole, a plurality of screws are further arranged on the heat dissipation structure 20, the screw through hole and the screw fixing hole are threaded holes and are matched with the screws, the screws penetrate through the screw through holes to be fixed in the screw fixing holes, and the screws fix the fixing block on the heat conduction base 21; the position that on the heat-conducting layer 24 with the fixed block is relative is equipped with a plurality of spacing grooves, the fixed block with the spacing groove block, when heat-conducting layer 24 has gliding trend on heat-conducting base 21, the lateral wall of fixed block supports the lateral wall of spacing groove to avoided heat-conducting layer 24's slip, time heat-conducting layer 24 fixes on heat-conducting base 21 on the surface, can not the landing.

Further, as shown in fig. 1, fig. 2 and fig. 3, as an implementation manner of this embodiment, the display device further includes a second fan 40, the second fan 40 is disposed on a side of the substrate 10 away from the first fan 30, and an air outlet direction of the second fan 40 is the same as an air outlet direction of the first fan 30. Set up second fan 40 at the opposite side of base plate 10, the air-out direction of second fan 40 deviates from base plate 10, and the direction orientation that induced drafts base plate 10, so second fan 40 can be with the air suction that has absorbed the heat for reduce the temperature in the air groove 23, form the negative pressure in the air groove 23 during the same time, accelerate the entering of the lower air of follow-up temperature, improve the air exchange speed among the heat dissipation process, further improve display device's radiating effect.

Specifically, as an implementation manner of this embodiment, the second fan 40 is provided with a plurality of second fans 40, and the second fans 40 are uniformly distributed on one side of the substrate 10 away from the first fan 30. Similar to the principle that the first fan 30 is provided in plural, when the second fans 40 are provided in plural, the speed at which air with higher temperature is sucked tends to be the same at each position of the display device, so that the temperature difference at each position is reduced, and the temperature at each position of the display device is equalized.

Specifically, the substrate 10 involved in the embodiments disclosed above in the present invention includes one or more of an Organic Light-Emitting Diode (OLED) display panel, a mini LED display panel, and a Micro LED display panel.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A display device, comprising:

a substrate;

the heat dissipation structure is arranged on the substrate and comprises a plurality of heat dissipation fins, and the heat dissipation fins are used for dissipating heat of the substrate;

the first fan is positioned on the side edge of the substrate and used for blowing air to the radiating fins;

the heat dissipation structures are arranged in a plurality and are arranged along the air outlet direction of the first fan; the number of the radiating fins on the radiating structure is in direct proportion to the distance from the radiating structure to the first fan.

2. The display device according to claim 1, wherein a plurality of the heat dissipation fins are arranged in parallel, an air passing groove is formed between adjacent heat dissipation fins, and an air outlet direction of the first fan is opposite to the air passing groove.

3. The display device according to claim 2, wherein the heat dissipation structure further comprises a heat conductive base fixed on the substrate, and a plurality of heat dissipation fins are disposed on a side of the heat conductive base facing away from the substrate.

4. The display device of claim 3, wherein the thermally conductive base on one of the heat dissipating structures and the plurality of heat sinks are integrally formed.

5. The display device according to claim 1, wherein the substrate comprises a plurality of back plates, and the plurality of back plates are arranged side by side along an air outlet direction of the first fan; one of the back plates is provided with one of the heat dissipation structures.

6. The display device according to claim 1, further comprising a thermally conductive layer disposed between the substrate and the heat dissipation structure, the thermally conductive layer for transferring heat from the substrate to the heat dissipation structure.

7. The display device of claim 6, wherein the thermally conductive layer comprises a layer of thermally conductive interface material.

8. The display device according to claim 6, wherein the heat dissipation structure is provided with a limiting member, the heat conduction layer is provided with a limiting through hole adapted to the limiting member, and the limiting member passes through the limiting through hole and is connected to the substrate.

9. The display device according to claim 1, further comprising a second fan disposed on a side of the substrate away from the first fan, wherein an air outlet direction of the second fan is the same as an air outlet direction of the first fan.

10. The display device according to any one of claims 1 to 9, wherein the substrate comprises one or more of an organic light emitting diode display panel, a mini LED display panel, a Micro LED display panel.