Heat dissipation device and system for backlight module

Abstract

The utility model provides a heat dissipation device and system for a backlight module. The heat dissipation device comprises a frame body, a backlight module body arranged on the frame body, a heat dissipation mechanism arranged on the frame body and used for conducting heat dissipation on the backlight module body, and a plurality of through holes formed in the frame body. According to the utility model, the swing assembly drives the blowing assembly to swing up and down in the reciprocating motion process of the shunting frame, so that the blowing assembly swings up and down to automatically transfer the blowing heat dissipation direction which is not arranged at the edge of the backlight module main body to the edge position; when the blowing assembly swings up and down, air containing heat of the edge can be blown out from the through holes in the top or the bottom, and the heat dissipation effect of the edge is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, in particular to a heat dissipation device and system for backlight modules. Background Art

[0002] Under the current trend of automobile intelligence and electrification, the in-vehicle display system plays an increasingly critical role. It not only serves as an intuitive display window for driving information, but also integrates multifunctional applications such as entertainment, navigation and vehicle status monitoring. With the evolution of technology, liquid crystal display (LCD) has become the mainstream choice for car dashboards and central control screens due to its high resolution, low power consumption and good visual experience. However, LCD itself does not emit light and needs to rely on the backlight module to provide uniform light source support, among which light-emitting diode (LED) is the most commonly used light source technology.

[0003] However, the thermal decay at the edge of the car display is actually greatly affected. If the heat dissipation is often insufficient, the edge components (such as various film materials) may shrink due to heat, resulting in abnormal edge display. In addition, for car displays, since other components are set at the display frame position, the available space is narrow, and it is difficult to set up heat dissipation enhancement for the edge position. Even if the entire backplane is cooled by blowing air, its contribution to the heat dissipation effect of the screen edge is also low due to the flow of air on the backplane. In addition, the backlight used in the car is high-brightness, usually at 30,000cd / m 2 High brightness requires large current drive, and large current will inevitably cause heat. Excessive temperature will cause the device to burn out, and even serious fires will occur. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a heat dissipation device and system for a backlight module that dissipates heat at edge positions.

[0005] The utility model provides the following technical solution: a heat dissipation device for a backlight module, comprising a frame, a backlight module body arranged on the frame, a heat dissipation mechanism arranged on the frame for dissipating heat from the backlight module body, and a plurality of through holes opened on the side of the frame;

[0006] The heat dissipation mechanism includes a shunt frame slidably connected to the frame, a connection frame arranged on the shunt frame, an air suction member arranged inside the connection frame, and a plurality of air blowing components arranged on a side of the shunt frame facing the backlight module body, and a driving member for driving the shunt frame to slide is arranged on the frame, the shunt frame is connected to the connection frame, and the connection frame is connected to the air blowing component;

[0007] The heat dissipation device also includes a driving mechanism for driving the blowing assembly to swing.

[0008] Furthermore, the heat dissipation mechanism also includes a heat dissipation plate arranged on the frame, and the heat dissipation plate is attached to the backlight module body.

[0009] Furthermore, the air suction member is a fan, and the air sucked by the fan is blown toward the heat sink through the connecting frame, the diverter frame and the blowing assembly to dissipate heat, and a filter is provided on the connecting frame.

[0010] Furthermore, the driving component is an electric slide rail, and the output end of the electric slide rail is fixedly connected to the diverter frame.

[0011] Furthermore, the plurality of blowing assemblies are arranged in a rectangular array.

[0012] Furthermore, the blowing assembly includes a hose and a bracket fixedly connected to the diverter frame, a connecting pipe fixedly connected to the hose, and a rotating shaft fixedly connected to the connecting pipe, wherein the rotating shaft is rotatably connected to the bracket;

[0013] The pushing mechanism includes a fixing frame fixedly connected to the frame, a plurality of protrusions arranged on the fixing frame, a convex plate fixedly connected to the rotating shaft of each blowing component, and a plurality of pushing components arranged on the diversion frame. The number of the pushing components is the same as the number of queues formed by the blowing components, and a single pushing component drives the blowing components of one queue to swing.

[0014] Furthermore, each of the convex discs is provided with a square hole, and the pushing assembly includes a sliding sleeve fixedly connected to the diverter frame, a sliding member slidably connected in the sliding sleeve, a plurality of connecting rods fixedly connected to the sliding member, and a spring connected between the sliding sleeve and the sliding member, the number of the connecting rods is the same as the number of the blowing assemblies in a queue, and the plurality of connecting rods are respectively located at the square holes of the convex discs in a queue.

[0015] Furthermore, the pushing assembly also includes a roller rotatably connected to the sliding member.

[0016] A heat dissipation system for a backlight module, comprising the above-mentioned heat dissipation device, the heat dissipation system further comprising a temperature recognition module, a brightness recognition module, an MCU control module and a current adjustment module arranged on the frame;

[0017] The temperature recognition module is used to obtain the temperature parameters of the backlight module body;

[0018] The brightness recognition module is used to obtain the brightness parameters of the backlight module body;

[0019] The current adjustment module is used to adjust the current output to the backlight module body;

[0020] The MCU control module is used to obtain the temperature parameter and the brightness parameter of the backlight module body through the temperature recognition module and the brightness recognition module, and then control the current adjustment module to adjust the current output to the backlight module body.

[0021] The beneficial effects of the utility model are as follows: first, the diverter frame is driven to move back and forth by the driving member, and the reciprocating movement of the diverter frame drives the blowing assembly to move back and forth, thereby the wind blown by the blowing assembly can cover a larger area of ​​the backlight module body, thereby achieving a uniform and sufficient heat dissipation effect; at the same time, during the reciprocating movement of the diverter frame, the swing assembly is used to drive the blowing assembly to swing up and down, thereby utilizing the up and down swinging of the blowing assembly to automatically transfer the blowing heat dissipation direction that is not set at the edge to the edge position, thereby forming an alternating heat dissipation effect for the edge, and when the blowing assembly swings up and down, the air containing the edge heat can be blown out from the top or bottom through-hole, thereby further achieving the enhanced heat dissipation effect at the edge.

[0022] In addition, since the air outlet of the through hole at the top or bottom is alternately swung with the blowing assembly, the blowing is intermittent. For the vehicle environment, this blowing method is conducive to reducing the impact of hot air on the occupants in the vehicle, because the alternating process time is conducive to the in-vehicle air conditioning or in-vehicle air flow to quickly disperse it to the in-vehicle environment. If the blowing method is long, it may make the occupants notice the air outlet and feel uncomfortable.

[0023] In addition, the temperature parameters and brightness parameters of the backlight module body are obtained through the temperature identification module and the brightness identification module, and then the current adjustment module is controlled to adjust the current output to the backlight module body, so that the backlight module body can be illuminated normally while the temperature of the backlight module body can be reasonably controlled to prevent its temperature from being too high and causing damage to the backlight module body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from the back side perspective.

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the heat dissipation mechanism of the utility model.

[0027] Figure 4 It is a three-dimensional structural schematic diagram of the blowing component of the utility model.

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the electric slide rail of the utility model.

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the driving mechanism of the utility model.

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the propulsion assembly of the utility model.

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the first part of the propulsion assembly of the utility model.

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second part of the pushing assembly of the utility model.

[0033] Fig.10 It is a schematic diagram of the process of the heat dissipation system of the utility model.

[0034] The marks in the accompanying drawings are: 1-frame, 2-backlight module body, 3-heat dissipation mechanism, 31-heat dissipation plate, 32-diverter frame, 33-connecting frame, 34-fan, 35-filter, 36-blowing assembly, 361-hose, 362-connecting pipe, 363-rotating shaft, 364-bracket, 37-electric slide rail, 4-pushing mechanism, 41-fixed frame, 42-bump, 43-pushing assembly, 431-sleeve, 432-sliding part, 433-spring, 434-roller, 435-convex disc, 436-connecting rod, 437-square hole, 5-through hole, 6-temperature recognition module, 7-brightness recognition module, 8-MCU control module, 9-current adjustment module. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] A heat dissipation device for a backlight module, such as Figure 1-Figure 9 As shown, it includes a frame 1, a backlight module body 2 arranged on the frame 1, a heat dissipation mechanism 3 arranged on the frame 1 for dissipating heat from the backlight module body 2, and a plurality of through holes opened on the side of the frame;

[0039] like Figure 3-Figure 5 As shown, the heat dissipation mechanism 3 includes a shunt frame 32 slidably connected to the frame body 1, a connecting frame 33 arranged on the shunt frame 32, an air suction member arranged inside the connecting frame 33, and a plurality of air blowing components 36 arranged on the side of the shunt frame 32 facing the backlight module body 2, and a driving member for driving the shunt frame 32 to slide is arranged on the frame body 1, the shunt frame 32 is connected to the connecting frame 33, and the connecting frame 33 is connected to the air blowing component 36;

[0040] The heat dissipation device further comprises a pushing mechanism 4 for pushing the blowing assembly 36 to swing.

[0041] It can be understood that when the backlight module needs to be cooled, the operator can first start the driving member and the air suction member. The air suction member starts to suck in the external air and blow it out from the blowing assembly 36 through the connecting frame 33 and the diverter frame 32. The blown wind is directed to the backlight module body 2, thereby dissipating the backlight module body 2, and the through hole 5 set on the frame 1 can facilitate the air flow to circulate, and the heat emitted by the backlight module body 2 is extracted. When the driving member is started, the driving member will drive the diverter frame 32 to move back and forth, and the reciprocating movement of the diverter frame 32 drives the blowing assembly 36 to move back and forth, thereby allowing the wind blown by the blowing assembly 36 to cover a larger area of ​​the backlight module body 2, thereby achieving a uniform and sufficient heat dissipation effect. During the reciprocating movement of the diverter frame 32, the swing assembly is swung to The assembly drives the blowing assembly 36 to swing up and down, thereby utilizing the blowing assembly 36 to swing up and down to automatically transfer the blowing heat dissipation direction that is not set at the edge to the edge position of the backlight module body 2, so that it forms an alternating heat dissipation effect for the edge, and when the blowing assembly 36 swings up and down, the air containing the edge heat can be blown out from the top or bottom through hole 5, further achieving the enhanced heat dissipation effect of the edge. In addition, since the air outlet of the top or bottom through hole 5 is alternately with the swing of the blowing assembly 36, the blowing is intermittent. For the vehicle environment, this blowing method is conducive to reducing the impact of hot air on the occupants in the vehicle, because the alternating process time is conducive to the in-vehicle air conditioning or in-vehicle air flow to quickly disperse it to the in-vehicle environment, and if it is a long blowing method, it may make the personnel notice the air outlet and feel uncomfortable;

[0042] The heat dissipation mechanism 3 further includes a heat dissipation plate 31 disposed on the frame 1 , and the heat dissipation plate 31 is attached to the backlight module body 2 .

[0043] It can be understood that, by attaching the heat dissipation plate 31 to the backlight module body 2 , the heat dissipation plate 31 absorbs and conducts the heat of the backlight module body 2 , thereby achieving a heat dissipation effect.

[0044] The air suction member is a fan 34 , and the fan 34 sucks air through the connection frame 33 , the diversion frame 32 and the blowing assembly 36 and blows it toward the heat sink 31 for heat dissipation. A filter 35 is provided on the connection frame 33 .

[0045] It can be understood that the fan 34 blows air toward the heat sink 31, which increases the heat absorption effect of the heat sink 31 and thus improves the heat dissipation effect on the backlight module body 2. The filter 35 is set to prevent dust from entering the frame 1 and causing damage to the backlight module body 2.

[0046] The driving member is an electric slide rail 37 , and an output end of the electric slide rail 37 is fixedly connected to the diverter frame 32 .

[0047] It can be understood that when the electric slide rail 37 is started, the output end of the electric slide rail 37 moves back and forth, thereby driving the diverter frame 32 to move back and forth.

[0048] The plurality of blowing assemblies 36 are arranged in a rectangular array.

[0049] It can be understood that by arranging the blowing components 36 in a rectangular array, the air blown out by the blowing components 36 can evenly cover the heat sink 31, so that the heat absorption degree of the heat sink 31 is always at a low saturation, thereby increasing the heat absorption capacity of the heat sink 31.

[0050] like Figure 4-Figure 9 As shown, the blowing assembly 36 includes a hose 361 and a bracket 364 fixedly connected to the diverter frame 32, a connecting pipe 362 fixedly connected to the hose 361, and a rotating shaft 363 fixedly connected to the connecting pipe 362, and the rotating shaft 363 is rotatably connected to the bracket 364; the pushing mechanism 4 includes a fixing frame 41 fixedly connected to the frame body 1, a plurality of protrusions 42 arranged on the fixing frame 41, a convex plate 435 fixedly connected to the rotating shaft 363 of each of the blowing assemblies 36, and a plurality of pushing assemblies 43 arranged on the diverter frame 32, the number of the pushing assemblies 43 is the same as the number of queues formed by the blowing assemblies 36, and a single pushing assembly 43 drives the blowing assemblies 36 of one queue to swing.

[0051] It can be understood that when the diverter frame 32 moves back and forth, the diverter frame 32 will also drive the pushing component 43 to move back and forth, the pushing component 43 is squeezed by the convex block 42, and the pushing component 43 will push the convex plate 435 to swing downward, and the convex plate 435 drives the connecting rod 436 to swing and rotate, and the connecting rod 436 will drive the connecting pipe 362 to swing and rotate, and the swinging of the connecting pipe 362 can make the wind direction swing, so that the wind direction blows toward the edge of the heat sink 31 to achieve the heat dissipation effect of the edge. Since the diverter frame 32 is connected to the hose 361, the hose 361 and the connecting pipe 36 2 is connected, so the airflow sucked in by the fan 34 will eventually be blown out from the connecting pipe 362. When the diverter frame 32 drives the pushing component 43 to no longer contact the protrusion 42, the pushing component 43 will be reset, and the pushing component 43 will drive the convex plate 435 to swing upward and reset. The convex plate 435 drives the connecting rod 436 to swing and reset. The connecting rod 436 will drive the connecting pipe 362 to swing and reset, thereby achieving the effect of reciprocating swing of the connecting pipe 362, so that the wind blows alternately to the upper and lower sides of the heat sink 31, cools the heat sink 31, and makes the heat sink 31 cool the backlight module.

[0052] A square hole 437 is provided on each of the convex discs 435, and the pushing assembly 43 includes a sliding sleeve 431 fixedly connected to the diverter frame 32, a sliding member 432 slidably connected in the sliding sleeve 431, a plurality of connecting rods 436 fixedly connected to the sliding member 432, and a spring 433 connected between the sliding sleeve 431 and the sliding member 432, the number of the connecting rods 436 is the same as the number of the blowing assemblies 36 in a queue, and the plurality of connecting rods 436 are respectively located at the square holes 437 of the convex discs 435 in a queue.

[0053] It can be understood that when the diverter frame 32 drives the pushing component 43 to move, the sliding member 432 of the pushing component 43 will contact the protrusion 42, the protrusion 42 squeezes the sliding member 432, the sliding member 432 moves downward, the spring 433 is stretched, the sliding member 432 moves downward, driving the connecting rod 436 to move downward, the connecting rod 436 moves downward and drives the convex plate 435 to move downward, when the diverter frame 32 drives the sliding member 432 of the pushing component 43 no longer contacts the protrusion 42, the spring 433 will reset, the spring 433 drives the sliding member 432 to move upward and reset, the sliding member 432 resets upward and drives the connecting rod 436 to move upward and reset, and the connecting rod 436 drives the convex plate 435 to rotate and swing upward and reset.

[0054] The pushing assembly 43 further includes a roller 434 rotatably connected to the sliding member 432 .

[0055] It can be understood that when the diverter frame 32 drives the pushing assembly 43 to move, the roller 434 on the sliding member 432 will contact the protrusion 42. The setting of the roller 434 can reduce the friction force of the contact with the protrusion 42 and increase the service life of the device of the utility model.

[0056] A heat dissipation system for a backlight module, such as Figure 2 and Fig.10 As shown, including the above-mentioned heat dissipation device, the heat dissipation system also includes a temperature recognition module 6, a brightness recognition module 7, an MCU control module 8 and a current adjustment module 9 arranged on the frame 1;

[0057] The temperature recognition module 6 is used to obtain the temperature parameters of the backlight module body 2;

[0058] The brightness recognition module 7 is used to obtain the brightness parameters of the backlight module body 2;

[0059] The current adjustment module 9 is used to adjust the current output to the backlight module body 2;

[0060] The MCU control module 8 is used to obtain the temperature parameter and the brightness parameter of the backlight module body 2 through the temperature recognition module 6 and the brightness recognition module 7 , and then control the current adjustment module 9 to adjust the current output to the backlight module body 2 .

[0061] It is understandable that since the backlight used in the car is high brightness, the brightness is usually 30000cd / m 2 , high brightness will inevitably require large current drive, and large current will inevitably cause heat. The temperature recognition module 6 is an NTC thermistor. The resistance value of the NTC thermistor is read in real time by the MCU control module 8, so as to know the current temperature of the backlight module body 2. The MCU control module 8 controls the current adjustment module 9 and adjusts the current flowing to the backlight module body 2 in real time to avoid excessive temperature causing device burnout, or even serious fire; the brightness recognition module 7 can monitor the brightness of the backlight module body 2 in real time, and feed it back to the MCU control module 8 through the IIC interface, so as to know the appropriate brightness so that the backlight module body 2 can be illuminated normally without being affected;

[0062] Specifically, the MCU control module 8 knows the current temperature of the backlight module body 2 through the temperature identification module 6, and the MCU control module 8 knows the current brightness of the backlight module body 2 through the brightness identification module 7, and finally adjusts the current adjustment module 9 through the PWM signal to output a current suitable for the current backlight module body 2.

[0063] In summary, first, the diverter frame 32 is driven to move back and forth by the driving member, and the reciprocating movement of the diverter frame 32 drives the blowing assembly 36 to move back and forth, thereby allowing the wind blown by the blowing assembly 36 to cover a larger area of ​​the backlight module body 2, thereby achieving a uniform and sufficient heat dissipation effect. At the same time, during the reciprocating movement of the diverter frame 32, the swing assembly is used to drive the blowing assembly 36 to swing up and down, thereby utilizing the up and down swinging of the blowing assembly 36 to automatically transfer the blowing heat dissipation direction that is not set at the edge to the edge position, so that it forms an alternating heat dissipation effect for the edge, and when the blowing assembly 36 swings up and down, the air containing the edge heat can be blown out from the top or bottom through-hole 5, thereby further achieving the enhanced heat dissipation effect at the edge.

[0064] In addition, since the air outlet of the through hole 5 at the top or bottom is alternately swung along with the blowing assembly 36, the blowing is intermittent. For the vehicle environment, this blowing method is conducive to reducing the impact of hot air on the occupants in the vehicle, because the alternating process time is conducive to the in-vehicle air conditioning or in-vehicle air flow to quickly disperse it to the in-vehicle environment. If the blowing method is long, the occupants may notice the air outlet and feel uncomfortable.

[0065] In addition, the temperature parameters and brightness parameters of the backlight module body 2 are obtained through the temperature identification module 6 and the brightness identification module 7, and then the current adjustment module 9 is controlled to adjust the current output to the backlight module body 2, so that the backlight module body 2 can be illuminated normally while the temperature of the backlight module body 2 can be reasonably controlled to prevent its temperature from being too high and causing damage to the backlight module body 2.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A heat dissipation device for a backlight module, characterized in that: It comprises a frame, a backlight module body arranged on the frame, a heat dissipation mechanism arranged on the frame for dissipating heat from the backlight module body, and a plurality of through holes opened on the side of the frame; The heat dissipation mechanism includes a shunt frame slidably connected to the frame, a connection frame arranged on the shunt frame, an air suction member arranged inside the connection frame, and a plurality of air blowing components arranged on a side of the shunt frame facing the backlight module body, and a driving member for driving the shunt frame to slide is arranged on the frame, the shunt frame is connected to the connection frame, and the connection frame is connected to the air blowing component; The heat dissipation device also includes a driving mechanism for driving the blowing assembly to swing.

2. The heat dissipation device according to claim 1, characterized in that: The heat dissipation mechanism further comprises a heat dissipation plate arranged on the frame, and the heat dissipation plate is attached to the backlight module body.

3. The heat dissipation device according to claim 2, characterized in that: The air suction member is a fan, and the air sucked by the fan is blown toward the heat sink through the connecting frame, the diverter frame and the blowing assembly to dissipate heat, and a filter is arranged on the connecting frame.

4. The heat dissipation device according to claim 1, characterized in that: The driving member is an electric slide rail, and the output end of the electric slide rail is fixedly connected to the diverter frame.

5. The heat dissipation device according to claim 3, characterized in that: The plurality of blowing assemblies are arranged in a rectangular array.

6. The heat dissipation device according to claim 5, characterized in that: The blowing assembly comprises a hose and a bracket fixedly connected to the diverter frame, a connecting pipe fixedly connected to the hose, and a rotating shaft fixedly connected to the connecting pipe, wherein the rotating shaft is rotatably connected to the bracket; The pushing mechanism includes a fixing frame fixedly connected to the frame, a plurality of protrusions arranged on the fixing frame, a convex plate fixedly connected to the rotating shaft of each blowing component, and a plurality of pushing components arranged on the diversion frame. The number of the pushing components is the same as the number of queues formed by the blowing components, and a single pushing component drives the blowing components of one queue to swing.

7. The heat dissipation device according to claim 6, characterized in that: A square hole is provided on each of the convex discs, and the pushing assembly includes a sliding sleeve fixedly connected to the diverter frame, a sliding member slidably connected in the sliding sleeve, a plurality of connecting rods fixedly connected to the sliding member, and a spring connected between the sliding sleeve and the sliding member. The number of the connecting rods is the same as the number of the blowing assemblies in a queue, and the plurality of connecting rods are respectively located at the square holes of the convex discs in a queue.

8. The heat dissipation device according to claim 7, characterized in that: The pushing assembly further comprises a roller rotatably connected to the sliding member.

9. A heat dissipation system for a backlight module, characterized in that: The heat dissipation device comprises any one of claims 1 to 8, wherein the heat dissipation system further comprises a temperature recognition module, a brightness recognition module, an MCU control module and a current adjustment module arranged on the frame; The temperature recognition module is used to obtain the temperature parameters of the backlight module body; The brightness recognition module is used to obtain the brightness parameters of the backlight module body; The current adjustment module is used to adjust the current output to the backlight module body; The MCU control module is used to obtain the temperature parameter and the brightness parameter of the backlight module body through the temperature recognition module and the brightness recognition module, and then control the current adjustment module to adjust the current output to the backlight module body.

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