Heat dissipation method of display device and display device

Abstract

The present application discloses a display heat dissipation method and a display device, the display device includes a lamp board and a plurality of micro heat dissipation devices, the micro heat dissipation devices are arranged on the lamp board, and the heat dissipation method includes the steps of: dividing the lamp board into N*M blocks; obtaining the real-time value of each block, and based on the representative value of each block, controlling the rotation of the micro heat dissipation devices in the corresponding block to adjust the temperature value in each block; wherein N and M are positive integers greater than 1. The present application arranges micro heat dissipation devices on the lamp board, and divides the lamp board into blocks. According to the real-time value and representative value of each block, the micro heat dissipation devices in the corresponding block are controlled to rotate to adjust the temperature value in each block, thereby realizing local heat dissipation and preventing the temperature in some areas of the lamp board from being too high, which affects the service life of the lamp beads on the lamp board.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a heat dissipation method for a display device and a display device. Background Art

[0002] LED electronic display is a display screen that displays various information such as text, graphics, images, animations, etc. by controlling the display mode of semiconductor light-emitting diodes. The technological progress of LED is the biggest driving force for expanding market demand and application. As the most advantageous new generation display media, LED displays have been widely used in large squares, commercial advertisements, information dissemination, etc., and can meet the needs of different environments.

[0003] Since LED semiconductor devices have high thermal power consumption, they will generate a lot of heat during operation. The heat dissipation performance determines the quality and life of an LED lamp. When the temperature of the LED component rises by 2°C, the reliability decreases by 10%. If it cannot be evacuated in time, it is easy to cause the display temperature to be too high, thus affecting the service life of the LED electronic display. Regardless of the LED display panel or other display panels, if the heat generated by some light-emitting devices during long-term operation cannot be dispersed in time, the heat of the lamp board in this area will rise rapidly, and the wiring or light-emitting devices will burn out, which will directly affect the service life of the light-emitting devices and cause various display problems for the display device. Summary of the invention

[0004] The purpose of the present application is to provide a heat dissipation method and a display device that can locally dissipate heat for a light-emitting device in real time and increase the service life of the light-emitting device.

[0005] The present application discloses a heat dissipation method for a display device, characterized in that the display device comprises a light board and a plurality of micro heat dissipation devices, the micro heat dissipation devices are arranged on the light board, and the heat dissipation method comprises the steps of:

[0006] Dividing the light panel into N*M blocks; and

[0007] Obtain the real-time value of each block, and based on the representative value of each block, control the rotation of the micro heat sink in the corresponding block to adjust the temperature value in each block;

[0008] Wherein, N and M are positive integers greater than 1.

[0009] Optionally, the real-time value is a real-time temperature value of each block, the representative value is a first preset temperature value of each block, and the step of obtaining the real-time value of each block and controlling the rotation of the micro heat sink in the corresponding block based on the representative value of each block to adjust the temperature value in each block includes:

[0010] If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block. If the real-time temperature value is less than the first preset temperature value, the micro heat sink in the corresponding block is controlled not to rotate.

[0011] Optionally, the real-time value is a real-time brightness value of each block, the representative value is a first preset brightness value of each block, and the step of obtaining the real-time value of each block and controlling the micro heat sink in the corresponding block to rotate based on the representative value of each block to adjust the temperature value in each block includes:

[0012] If the real-time brightness value is greater than or equal to the first preset brightness value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block; if the real-time brightness value is less than the first preset brightness value, the micro heat sink in the corresponding block is controlled not to rotate;

[0013] The grayscale value corresponding to the preset brightness value ranges from 230 to 255.

[0014] Optionally, the lamp board is provided with a plurality of lamp beads arranged in a matrix form, each block is provided with a plurality of lamp beads, a groove is provided between two adjacent lamp beads, the micro heat sink is arranged in the groove, and the grooves in adjacent blocks are interconnected;

[0015] If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block; if the real-time temperature value is less than the first preset temperature value, the micro heat sink in the corresponding block is controlled not to rotate, the step includes:

[0016] If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink in the corresponding block is controlled to rotate forward to reduce the temperature value in the corresponding block; if the real-time temperature value is less than the second preset temperature value, the micro heat sink in the corresponding block is controlled to rotate reversely;

[0017] Wherein, the second preset temperature value is less than the first preset temperature value;

[0018] The step of controlling the micro heat sink in the corresponding block to rotate to reduce the temperature value in the corresponding block if the real-time brightness value is greater than or equal to the first preset brightness value, and controlling the micro heat sink in the corresponding block not to rotate if the real-time brightness value is less than the first preset brightness value includes: controlling the micro heat sink in the corresponding block to rotate forward to reduce the temperature value in the corresponding block if the real-time brightness value is greater than or equal to the first preset brightness value, and controlling the micro heat sink in the corresponding block to rotate reversely if the real-time brightness value is less than the second preset brightness value;

[0019] Wherein, the second preset brightness value is smaller than the first preset brightness value.

[0020] Optionally, if the real-time brightness value is greater than or equal to the first preset brightness value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block, and if the real-time brightness value is less than the first preset brightness value, the step of controlling the micro heat sink in the corresponding block not to rotate includes:

[0021] If the real-time brightness value is greater than or equal to the first preset brightness value, monitor the duration of the real-time brightness value that is greater than or equal to the first preset brightness value. If the duration is greater than the preset time, control the micro heat sink in the corresponding block to rotate to reduce the temperature value in the corresponding block. If the real-time brightness value is less than the first preset brightness value or the duration is less than or equal to the preset time, control the micro heat sink in the corresponding block not to rotate.

[0022] The present application also discloses a display device, which uses any of the above heat dissipation methods for heat dissipation, wherein the display device comprises a light board and a plurality of micro heat dissipation devices, wherein the micro heat dissipation devices are arranged on the light board, and the light board is divided into N*M blocks; the display device comprises a heat dissipation control module, wherein the heat dissipation control module obtains a real-time value of each block, and controls the rotation of the micro heat dissipation devices in the corresponding block based on the representative value of each block, so as to adjust the temperature value in each block;

[0023] Wherein, N and M are positive integers greater than 1.

[0024] Optionally, the heat dissipation control module includes multiple heat dissipation control chips and a temperature monitoring unit. The temperature monitoring unit monitors the real-time temperature value in each block, compares the real-time temperature value with the first preset temperature value, and feeds back signals to different heat dissipation control chips based on the comparison result to control the rotation or non-rotation of the micro heat dissipation device in the corresponding block.

[0025] Optionally, the lamp board is provided with a plurality of lamp beads arranged in a matrix form, each block is provided with a plurality of lamp beads, a groove is provided between two adjacent lamp beads, the grooves in the blocks corresponding to two adjacent rows of lamp beads are interconnected to form a tree structure, the micro heat dissipation device is arranged at both ends of the trunk of the tree structure, the depth of the groove is less than the thickness of the lamp board, the two ends of the trunk of the tree structure are respectively an air outlet and an air inlet, and the air outlets and air inlets of the trunks of two adjacent tree structures are staggered.

[0026] Optionally, each of the lamp beads is provided with a corresponding micro heat sink, and insulating coolant is provided in the groove.

[0027] Optionally, the lamp beads and the micro heat sink are arranged in different layers, the micro heat sink includes a driving structure and a rotating structure, the rotating structure includes a rotating shaft and at least two rotating fan blades arranged obliquely to the rotating shaft, the driving structure includes a driving wall and at least two driving electrodes, the driving wall is connected to the rotating shaft in a driving manner, the heat dissipation control module obtains the real-time value of each block, and based on the representative value of each block, controls the driving wall of the micro heat sink in the corresponding block to rotate to drive the rotating shaft to rotate, so as to dissipate heat from the lamp board, wherein different driving electrodes receive different voltages to generate electric fields of different sizes, so that the driving wall rotates to drive the rotating shaft to rotate at different rates.

[0028] Compared with the existing display device scheme in which a heat dissipation channel is placed on or below the lamp beads, the present application arranges corresponding micro heat dissipation devices on the lamp board, and divides the lamp board into blocks. According to the real-time value and representative value of each block, the rotation of the micro heat dissipation devices in the corresponding block is controlled. The rotation of the micro heat dissipation devices accelerates the heat dissipation of the lamp board in the corresponding block, thereby reducing the temperature of the lamp board. The lamp board can be dissipated in a targeted manner. The corresponding micro heat dissipation devices can be turned on where heat dissipation is needed. The heat dissipation is more precise, so as to adjust the temperature value in each block and realize local heat dissipation, thereby preventing the service life of the lamp board from being affected by excessive temperature, thereby increasing the service life of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0030] Figure 1 is a schematic flow chart of a heat dissipation method for a display device according to a first embodiment of the present application;

[0031] Figure 2 is a schematic structural diagram of a display device according to a first embodiment of the present application;

[0032] Figure 3 is a schematic flow chart of a heat dissipation method for a display device according to a second embodiment of the present application;

[0033] Figure 4 is a schematic flow chart of a heat dissipation method for a display device according to a third embodiment of the present application;

[0034] Figure 5is a schematic structural diagram of a display device according to a fourth embodiment of the present application;

[0035] Figure 6 is a schematic structural diagram of a micro heat dissipation device according to a fourth embodiment of the present application;

[0036] Figure 7 is a structural stereogram of another micro heat dissipation device of the fourth embodiment of the present application;

[0037] Figure 8 is a structural stereogram of a display device according to a fifth embodiment of the present application;

[0038] Fig. 9 is a schematic structural diagram of a display device according to a sixth embodiment of the present application;

[0039] Fig.10 is a schematic structural diagram of a display device according to a seventh embodiment of the present application;

[0040] Fig.11 is a schematic diagram of the structure of a light board of a display device according to a seventh embodiment of the present application;

[0041] Fig.12 It is another schematic diagram of the structure of a lamp panel of the display device of the seventh embodiment of the present application.

[0042] Among them, 100, display device; 110, lamp board; 111, lamp beads; 112, blocks; 113, grooves; 114, air inlet; 115, air outlet; 120, micro heat dissipation device; 130, drive structure; 131, drive wall; 132, drive electrode; 140, rotating structure; 150, rotating axis; 160, rotating fan blades; 170, heat dissipation control module; 171, heat dissipation control chip; 180, data drive module; 190, microprogram control module; 200, timing control module; 201, timing unit; 210, temperature monitoring unit. DETAILED DESCRIPTION

[0043] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0044] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0045] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0046] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0048] Embodiment 1:

[0049] refer to Figure 1 to Figure 2 As shown, as a first embodiment of the present application, a heat dissipation method of a display device 100 is disclosed, wherein the display device 100 includes a light board 110 and a plurality of micro heat dissipation devices 120, wherein the micro heat dissipation devices 120 are arranged on the light board 110, and the heat dissipation method includes the following steps:

[0050] S1: Divide the light board into N*M blocks; and

[0051] S2: obtaining the real-time value of each block, and based on the representative value of each block, controlling the rotation of the micro heat sink in the corresponding block 112 to adjust the temperature value in each block;

[0052] Wherein, N and M are positive integers greater than 1.

[0053] The light board 110 is divided into a plurality of blocks 112, each of which is provided with a micro heat sink 120. The micro heat sink 120 is a micro heat sink 120 with a fan-like structure printed by two-photon printing technology. The micro heat sink 120 can generate wind when it rotates, thereby changing the airflow direction in the corresponding block 112 to adjust the temperature value in the corresponding block 112. When the micro heat sink 120 is working, it will first obtain the real-time value of each block 112, and calculate or set the representative value of each block 112. According to the real-time value and the representative value, it controls whether the micro heat sink 120 of the corresponding block 112 rotates or the rotation speed to adjust the temperature value in each block 112, so that when the temperature in each block 112 is the same or different, the internal temperature of each block 112 is adjusted to a controllable temperature range at the same time or at different times, so as to achieve local heat dissipation or heat dissipation with different local efficiencies.

[0054] Embodiment 2:

[0055] like Figure 3 As shown, as the second embodiment of the present application, it is a further limitation of the above first embodiment, the real-time value is the real-time temperature value of each block 112, the representative value is the first preset temperature value of each block 112, and the step S2 includes:

[0056] S231: If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block; if the real-time temperature value is less than the first preset temperature value, the micro heat sink in the corresponding block is controlled not to rotate.

[0057] This embodiment mainly monitors the temperature of each block 112 by obtaining the real-time temperature of each block 112, comparing the real-time temperature value with the first preset temperature value, and controlling whether the micro heat dissipation device 120 is working based on the comparison result, thereby achieving heat dissipation of some blocks 112.

[0058] Further, the lamp board 110 is provided with a plurality of lamp beads 111 arranged in a matrix form, each block 112 is provided with a plurality of lamp beads 111, and a groove 113 is provided between two adjacent lamp beads 111 along the scanning line direction or the data line direction, and the micro heat sink 120 is arranged in the groove 113, and the grooves 113 in adjacent blocks 112 are interconnected, and when the micro heat sink 120 rotates, airflow can flow in the groove 113, and the step S231 includes:

[0059] If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink 120 in the corresponding block 112 is controlled to rotate forward to reduce the temperature value in the corresponding block 112. If the real-time temperature value is less than the second preset temperature value, the micro heat sink 120 in the corresponding block 112 is controlled to rotate reversely to change the wind direction of the micro heat sink 120 in real time.

[0060] Considering that when the temperatures in multiple blocks 112 are high and low, the real-time temperature value of some areas is less than the first preset temperature value and does not rotate, then only the micro-heat dissipation devices 120 of the blocks 112 with a temperature greater than or lower than the first preset temperature value rotate. Even if the rotation speed is adjusted to the maximum, the heat dissipation efficiency will be relatively slow. At this time, the micro-heat dissipation devices 120 in the low-temperature area can be turned on, the high-temperature area can rotate forward, and the low-temperature area can rotate reversely to neutralize the hot air and the cool air, thereby improving the heat dissipation efficiency. In this way, there is no need to adjust the rotation speed to the maximum, and it is also possible to avoid the micro-heat dissipation device 120 from generating heat due to its own excessive rotation speed, which causes the temperature of the block 112 to rise, and it can also avoid the micro-heat dissipation device 120 from being overloaded and damaged; wherein, the second preset temperature value is less than the first preset temperature value, the first preset temperature value is generally 40°C to 60°C, and of course it can also be above 60°C, and is selected according to the heat resistance of the corresponding material, and the second preset temperature value is generally 15°C to 25°C.

[0061] Embodiment 3:

[0062] refer to Figure 4 As shown, as the third embodiment of the present application, different from the above second embodiment, the real-time value is the real-time brightness value of each block 112, the representative value is the first preset brightness value of each block 112, and the step S2 includes:

[0063] S241: If the real-time brightness value is greater than or equal to the first preset brightness value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block; if the real-time brightness value is less than the first preset brightness value, the micro heat sink in the corresponding block is controlled not to rotate;

[0064] The grayscale value corresponding to the preset brightness value ranges from 230 to 255.

[0065] Considering that the greater the brightness value of each block 112, the greater the current of the lamp bead 111 on the corresponding lamp board 110, and the greater the heat generated, the present embodiment does not need to set up a structure for detecting the temperature of each block 112, but can judge or predict the heat generated by each block 112 by the brightness value or grayscale value. Different from the existing local dimming technology, the present embodiment proposes a new local heat dissipation technology, which associates the brightness value or grayscale value with the heat dissipation of each block 112. After the grayscale value or brightness value exceeds the set first preset brightness value, the micro heat dissipation device 120 in the corresponding block 112 is controlled to rotate to reduce the temperature value in the corresponding block 112. If the real-time brightness value is less than the first preset brightness value, the micro heat dissipation device 120 in the corresponding block 112 is controlled not to rotate, thereby realizing local heat dissipation of the lamp board 110 of the display device 100.

[0066] Furthermore, in order to achieve heat dissipation of the high-temperature block 112 more quickly, the present embodiment also sets a second preset brightness value, which is less than the first preset brightness value. The block 112 with the second preset brightness value is an area with very little heat or very low temperature, and the airflow in this area forms a cool breeze. When the temperature difference between two adjacent blocks 112 is large, if the real-time brightness value is greater than or equal to the first preset brightness value, the micro-heat dissipation device 120 in the corresponding block 112 is controlled to rotate forward to reduce the temperature value in the corresponding block 112. If the real-time brightness value is less than the second preset brightness value, the micro-heat dissipation device 120 in the corresponding block 112 is controlled to reverse and neutralize the hot air and cool air, thereby improving the heat dissipation efficiency. In this way, there is no need to adjust the rotation speed to the maximum, and it is also possible to avoid the micro-heat dissipation device 120 from generating heat due to its own excessive rotation speed, which causes the temperature of the block 112 to rise, and it can also avoid the micro-heat dissipation device 120 from being overloaded and damaged.

[0067] In addition, the step S241 further includes the following steps:

[0068] If the real-time brightness value is greater than or equal to the first preset brightness value, the duration of the real-time brightness value greater than or equal to the first preset brightness value is monitored. If the duration is greater than the preset time, the micro heat sink 120 in the corresponding block 112 is controlled to rotate to reduce the temperature value in the corresponding block 112. If the real-time brightness value is less than the first preset brightness value or the duration is less than or equal to the preset time, the micro heat sink 120 in the corresponding block 112 is controlled not to rotate.

[0069] Taking into account that the grayscale value or brightness value is detected in real time, but the picture will keep changing, some blocks 112 are displayed in high grayscale in the first frame, but may be displayed in low grayscale in the second frame. In this case, the temperature of the corresponding block 112 is relatively low, and there is no need to turn on the micro-heat dissipation device 120. On the contrary, keeping the heat dissipation device turned off can reduce power consumption. Therefore, the duration or the accumulated total time of the high grayscale display in the block 112 can be counted. When the duration or the total time exceeds a certain value, the temperature of the block 112 is bound to be higher than the temperature of other low grayscale blocks 112. At this time, the micro-heat dissipation device 120 of the block 112 is turned on to adjust the temperature value in the block 112.

[0070] Embodiment 4:

[0071] like Figure 5 As shown, as the fourth embodiment of the present application, this embodiment discloses a display device 100, which uses the heat dissipation method described in any of the above embodiments for heat dissipation, and the display device 100 includes a lamp board 110 and a plurality of micro heat dissipation devices 120, wherein the micro heat dissipation devices 120 are arranged on the lamp board 110, and the lamp board 110 is divided into N*M blocks 112; wherein N and M are positive integers greater than 1, and a plurality of lamp beads 111 are arranged in each block 112 of the lamp board 110, and wiring is arranged in the lamp board 110, and the display device 100 inputs different currents through the wiring to control the lamp beads 111 to display different brightness; the display device 100 includes a heat dissipation control module 170, and the heat dissipation control module 170 obtains the real-time value of each block 112, and controls the micro heat dissipation devices 120 in the corresponding blocks 112 to rotate based on the representative values ​​of each block 112, so as to adjust the temperature value in each block 112 to achieve local heat dissipation.

[0072] Further, such as Figure 6 As shown, the lamp bead 111 and the micro heat sink 120 are arranged in different layers. The micro heat sink 120 includes a driving structure 130 and a rotating structure 140. The rotating structure 140 includes a rotating shaft 150 and at least two rotating blades 160 arranged obliquely to the rotating shaft 150. The number of blades of the micro heat sink 120 can be reasonably designed according to the specific heat generation of the lamp bead 111, and is generally set to three blades 160, such as Figure 7As shown, each fan blade 160 is bent, and the angles between the three fan blades are generally equal. Along the direction shown in the figure, the middle of the fan blade 160 is concave to form a groove, thereby increasing the airflow rate; the driving structure 130 includes a driving wall 131 and at least two driving electrodes 132, and the driving wall 131 is connected to the rotating shaft 150 in a transmission manner. The heat dissipation control module 170 obtains the real-time value of each block 112, and based on the representative value of each block 112, controls the driving wall 131 of the micro heat dissipation device 120 in the corresponding block 112 to rotate to drive the rotating shaft 150 to rotate, so as to dissipate heat for the lamp board 110, wherein different driving electrodes 132 receive different voltages to generate electric fields of different sizes so that the driving wall 131 rotates to drive the rotating shaft 150 to rotate at different rates, and combines the micro heat dissipation device 120 with display technologies such as mini LED and micro LED, and rotates through the rotating structure 140 to achieve fixed-point heat dissipation of mini LED and the like.

[0073] The rotating blades 160 of the rotating structure 140 of the micro heat sink 120 accelerate the heat dissipation of the lamp board 110 of the corresponding block 112, thereby reducing the temperature of the related structure or film layer of the lamp board 110 or the lamp bead 111. The specific area of ​​the lamp board 110 can be dissipated in a targeted manner. The corresponding micro heat sink 120 can be turned on where heat dissipation is required, and the heat dissipation is more accurate. The corresponding micro heat sink 120 can be turned off for the block 112 that does not need heat dissipation, so as to avoid wasting electricity by turning on all of them. The targeted turning on or off can reduce power consumption. The rotating structure 1 The rotation speed of the rotating structure 140 can also be adjusted and changed. The block 112 with a long working time and a high temperature can have a faster rotating fan blade 160 and can blow away the heat faster. After the temperature of the corresponding block 112 is lowered, the rotation speed of the rotating fan blade 160 can be reduced, that is, the rotation speed of the rotating structure 140 is continuously changed, so that the heat dissipation speed of the micro heat dissipation device 120 to the specific block 112 of the lamp board 110 can be controlled, and the lamp board 110 can be dissipated efficiently and accurately, thereby preventing the excessive temperature from affecting the service life of the lamp beads 111 on the lamp board 110, so as to increase the service life of the display device 100.

[0074] Embodiment 5:

[0075] like Figure 8As shown, as the fifth embodiment of the present application, it is a further refinement of the above-mentioned fourth embodiment. The heat dissipation control module 170 includes multiple heat dissipation control chips 171, and the display device 100 includes a data driving module 180 and a microprogram control module 190. The microprogram control module 190 receives the data display signal transmitted by the data driving module 180, and controls one or more heat dissipation control chips 171 to adjust the temperature in each block 112 after processing the data display signal, that is, the corresponding micro heat dissipation device 120 is controlled to work through the grayscale value or the brightness value, so as to achieve the temperature adjustment of each block 112 of the lamp board 110 and realize local heat dissipation.

[0076] Furthermore, the display device 100 also includes a timing control module 200, and the timing control module 200 is provided with a timing unit 201. The timing unit 201 counts the duration or the accumulated total time of the high grayscale display in the block 112. When the duration or the total time exceeds a certain value, the temperature of the block 112 is bound to be higher than the temperature of other low grayscale blocks 112. At this time, the micro heat dissipation device 120 of the block 112 is turned on to adjust the temperature value in the block 112.

[0077] Embodiment 6:

[0078] like Fig. 9 As shown, as the sixth embodiment of the present application, different from the above-mentioned fifth embodiment, this embodiment considers that the temperature of each block 112 of the lamp board 110 may be affected by the adjacent blocks 112 in addition to being affected by the different brightness displays of the lamp beads 111, that is, the temperatures between different blocks 112 will be heat transferred through the lamp board 110, and thus will be integrated. Therefore, the real-time temperature value of each block 112 may change. Therefore, this embodiment does not judge the temperature change by the grayscale value, but adds a temperature monitoring unit 210 to perform real-time temperature monitoring of each block 112. Therefore, the heat dissipation control module 170 includes multiple heat dissipation control chips 171 and a temperature monitoring unit 210. The temperature monitoring unit 210 monitors the real-time temperature value in each block 112, compares the real-time temperature value with the first preset temperature value, and feeds back a signal to different heat dissipation control chips 171 according to the comparison result to control the micro heat dissipation device 120 in the corresponding block 112 to rotate or not.

[0079] In addition, in addition to controlling the operation of the micro heat sink 120 according to the grayscale value, or controlling the operation of the micro heat sink 120 by monitoring the real-time temperature by the temperature monitoring unit 210, the operation of the micro heat sink 120 can also be controlled according to the refresh rate of the display device 100 to achieve heat dissipation of a specific block 112 on the lamp board 110, thereby achieving local heat dissipation.

[0080] Embodiment 7:

[0081] like Fig.10 As shown, as the seventh embodiment of the present application, it is a further expansion and refinement of any of the above embodiments. The lamp board 110 on the display device 100 is provided with a plurality of lamp beads 111 arranged in a matrix form, and each block 112 is provided with a plurality of lamp beads 111. A groove 113 is provided between two adjacent lamp beads 111. The grooves 113 in the blocks 112 corresponding to the lamp beads 111 in two adjacent rows are interconnected to form a heat dissipation channel of a tree structure. The micro heat dissipation device 120 is arranged at both ends of the trunk of the tree structure. The depth of the groove 113 is less than the thickness of the lamp board 110. The two ends of the trunk of the tree structure are respectively an air outlet 115 and an air inlet 114. The air outlet 115 and the air inlet 114 of the trunks of two adjacent tree-like structures are staggered, and the micro-rotating structure 140 is vertically arranged on the outer walls of the air inlet 114 and the air outlet 115. The twisting directions of the fan blades of the air inlet 114 and the air outlet 115 are opposite. The micro-rotating structure 140 arranged at the air inlet 114 and the air outlet 115 is generally a four-blade fan, and the wind direction at the air inlet 114 is facing the channel, while the wind direction at the air outlet 115 is facing away from the channel. The micro-rotating structure 140 of the air outlet 115 is used to discharge the hot air inside the channel, and the air inlet 114 is used to fan in air with relatively low external ambient temperature to form convection, thereby increasing the rate of heat exchange between the internal heat of the lamp board 110 and the outside world.

[0082] In addition, if Figure 7 and Fig.11 As shown, the micro-rotating structure 140 arranged at the air inlet 114 and the air outlet 115 is generally a three-blade fan, and each blade 160 is bent. Along the direction shown in the figure, the middle of the blade 160 is concave to form a groove, and the angles between the three-blade blades are the same; the micro-rotating structure 140 is horizontally arranged on the outer wall of the air inlet 114 and the air outlet 115, and the twisting directions of the blades of the air inlet 114 and the air outlet 115 are opposite, and the wind direction at the air inlet 114 is facing the channel, while the wind direction at the air outlet 115 is facing away from the channel, the micro-rotating structure 140 of the air outlet 115 is used to discharge the hot air inside the channel, and the micro-rotating structure 140 of the air inlet 114 is used to fan in air with relatively low external ambient temperature to form convection, thereby increasing the rate of heat exchange between the lamp board 110 and the outside world.

[0083] In addition, refer to Fig.12As shown, the air inlet 114 is arranged inside the lamp board 110. The air inlet 114 is made by setting a through hole inside the lamp board 110. The above micro-rotating structure 140 can be set not only at the air outlet 115 but also inside the channel to increase the convection wind speed in the channel; the air outlet 115 and the air inlet 114 can also be converted by forward or reverse rotation of the micro-heat dissipation device 120. The heat dissipation channel can be not only in the shape of a tree branch but also in other shapes, which can be specifically designed according to the arrangement of the mini LED.

[0084] Furthermore, each of the lamp beads 111 is provided with a corresponding micro heat sink 120. A micro heat sink 120 is provided for each lamp bead 111, so that the heat dissipation of each lamp bead 111 can be accurately controlled. For lamp beads 111 with a longer light emission time and a larger amount of heat generated, the heat dissipation time can be increased, that is, the corresponding micro heat sink 120 is controlled to work for a longer time, while for lamp beads 111 with a short light emission time and a smaller amount of heat generated, the corresponding micro heat sink 120 is controlled not to work.

[0085] In addition, in order to increase the heat dissipation rate, an insulating coolant with relatively high thermal conductivity is provided in the groove 113. The cooling liquid can absorb the heat on the lamp board 110, thereby reducing the temperature rise rate when the lamp board 110 is heated, thereby preventing the temperature of a specific block 112 of the lamp board 110 from rising too quickly, and preventing related devices or film layers from being damaged due to high temperature before the micro heat dissipation device 120 is turned on. At the same time, when the micro heat dissipation device 120 rotates to dissipate heat, it can drive more heat to be exchanged during rotation.

[0086] It should be noted that the limitations on the various steps involved in this solution, without affecting the implementation of the specific solution, are not deemed to limit the order of the steps. The steps written in front can be executed first, or later, or even simultaneously. As long as this solution can be implemented, it should be deemed to fall within the scope of protection of this application.

[0087] The inventive concept of the present application can form a great number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0088] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A heat dissipation method for a display device, characterized in that: The display device comprises a lamp board and a plurality of micro heat dissipation devices, wherein the micro heat dissipation devices are arranged on the lamp board, and the heat dissipation method comprises the steps of: Dividing the light panel into N*M blocks; as well as Obtain the real-time value of each block, and based on the representative value of each block, control the rotation of the micro heat sink in the corresponding block to adjust the temperature value in each block; Wherein, N and M are positive integers greater than 1; The real-time value is the real-time temperature value of each block, the representative value is the first preset temperature value of each block, and the step of obtaining the real-time value of each block and controlling the micro heat sink in the corresponding block to rotate based on the representative value of each block to adjust the temperature value in each block includes: If the real-time temperature value is greater than or equal to the first preset temperature value, the micro heat sink in the corresponding block is controlled to rotate forward to reduce the temperature value in the corresponding block; if the real-time temperature value is less than the first preset temperature value and greater than the second preset temperature value, the micro heat sink in the corresponding block is controlled not to rotate; if the real-time temperature value is less than the second preset temperature value, the micro heat sink in the corresponding block is controlled to rotate reversely; The lamp board is provided with a plurality of lamp beads arranged in a matrix form, each block is provided with a plurality of lamp beads, a groove is provided between two adjacent lamp beads, the micro heat sink is arranged in the groove, and the grooves in adjacent blocks are connected to each other; Wherein, the second preset temperature value is lower than the first preset temperature value.

2. A heat dissipation method for a display device, characterized in that: The display device comprises a lamp board and a plurality of micro heat dissipation devices, wherein the micro heat dissipation devices are arranged on the lamp board, and the heat dissipation method comprises the steps of: Dividing the light panel into N*M blocks; as well as Obtain the real-time value of each block, and based on the representative value of each block, control the rotation of the micro heat sink in the corresponding block to adjust the temperature value in each block; Wherein, N and M are positive integers greater than 1; The real-time value is the real-time brightness value of each block, the representative value is the first preset brightness value of each block, and the step of obtaining the real-time value of each block and controlling the micro heat sink in the corresponding block to rotate based on the representative value of each block to adjust the temperature value in each block includes: If the real-time brightness value is greater than or equal to the first preset brightness value, the micro heat sink in the corresponding block is controlled to rotate forward to reduce the temperature value in the corresponding block; if the real-time brightness value is less than the first preset brightness value and greater than the second preset brightness value, the micro heat sink in the corresponding block is controlled not to rotate; if the real-time brightness value is less than the second preset brightness value, the micro heat sink in the corresponding block is controlled to rotate reversely; The grayscale value corresponding to the preset brightness value ranges from 230 to 255. Wherein, the second preset brightness value is smaller than the first preset brightness value.

3. The heat dissipation method of a display device according to claim 2, characterized in that: If the real-time brightness value is greater than or equal to the first preset brightness value, the micro heat sink in the corresponding block is controlled to rotate to reduce the temperature value in the corresponding block; if the real-time brightness value is less than the first preset brightness value, the micro heat sink in the corresponding block is controlled not to rotate, the step includes: If the real-time brightness value is greater than or equal to the first preset brightness value, monitor the duration of the real-time brightness value that is greater than or equal to the first preset brightness value. If the duration is greater than the preset time, control the micro heat sink in the corresponding block to rotate to reduce the temperature value in the corresponding block. If the real-time brightness value is less than the first preset brightness value or the duration is less than or equal to the preset time, control the micro heat sink in the corresponding block not to rotate.

4. A display device, using the heat dissipation method according to any one of claims 1 to 3 for heat dissipation, characterized in that: The display device includes a light board and a plurality of micro heat sinks, wherein the micro heat sinks are arranged on the light board, and the light board is divided into N*M blocks; the display device includes a heat dissipation control module, wherein the heat dissipation control module obtains a real-time value of each block, and controls the micro heat sinks in the corresponding block to rotate based on the representative value of each block, so as to adjust the temperature value in each block; Wherein, N and M are positive integers greater than 1.

5. The display device according to claim 4, characterized in that The heat dissipation control module includes multiple heat dissipation control chips and a temperature monitoring unit. The temperature monitoring unit monitors the real-time temperature value in each block, compares the real-time temperature value with the first preset temperature value, and feeds back signals to different heat dissipation control chips based on the comparison results to control the micro heat dissipation device in the corresponding block to rotate or not.

6. The display device according to claim 4, characterized in that The lamp board is provided with a plurality of lamp beads arranged in a matrix form, each block is provided with a plurality of lamp beads, a groove is provided between two adjacent lamp beads, the grooves in the blocks corresponding to two adjacent rows of lamp beads are interconnected to form a tree structure, the micro heat dissipation device is arranged at both ends of the trunk of the tree structure, the depth of the groove is less than the thickness of the lamp board, the two ends of the trunk of the tree structure are respectively an air outlet and an air inlet, and the air outlets and air inlets of the trunks of two adjacent tree structures are staggered.

7. The display device according to claim 6, wherein: Each of the lamp beads is provided with a corresponding micro heat sink, and insulating coolant is provided in the groove.

8. The display device according to any one of claims 5 to 7, characterized in that: The lamp beads and the micro heat sink are arranged in different layers. The micro heat sink includes a driving structure and a rotating structure. The rotating structure includes a rotating shaft and at least two rotating blades arranged obliquely to the rotating shaft. The driving structure includes a driving wall and at least two driving electrodes. The driving wall is connected to the rotating shaft in a driving manner. The heat dissipation control module obtains the real-time value of each block, and based on the representative value of each block, controls the driving wall of the micro heat sink in the corresponding block to rotate so as to drive the rotating shaft to rotate, so as to dissipate heat from the lamp panel. Different driving electrodes receive different voltages to generate electric fields of different magnitudes, so that the driving wall rotates to drive the rotating shaft to rotate at different speeds.

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