Liquid crystal display screen with heat dissipation function

Abstract

The invention relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen with a heat dissipation function. The technical scheme comprises a display screen; the back side of the display screen is fixedly connected with the fixing plate; the cooling bin is fixedly connected to the back side of the fixing plate; the cooling bin is fixedly connected with the first mounting plate; the first mounting plate is fixedly connected with at least two groups of air blowers; the cooling bin is fixedly connected with the second mounting plate; and the dustproof net is arranged on the second mounting plate. Through an active heat dissipation structure combining cooling liquid circulation type heat absorption and conduction and open area air cooling heat dissipation, the defects that the heat dissipation effect is poor and heat is prone to being accumulated due to the fact that air circulation is limited when a traditional liquid crystal display screen is used at high strength, especially when the traditional liquid crystal display screen is installed in a wall attaching mode are effectively overcome, the heat dissipation efficiency and uniformity are remarkably improved, and the heat dissipation effect is good. And the stability and the reliability of the system under long-term high-load operation are ensured.

Description

Technical Field

[0001] This invention relates to the field of liquid crystal display technology, and in particular to a liquid crystal display with heat dissipation function. Background Technology

[0002] LCD screens are widely used in home televisions, commercial displays, and indoor advertising due to their advantages such as low power consumption, thinness, and high definition. The basic working principle is to adjust the transmittance of the backlight by controlling the arrangement of liquid crystal molecules, thereby realizing image display.

[0003] With the continuous advancement of display technology, LCD screens are developing towards higher brightness, higher refresh rates, and higher resolutions. However, under such high-intensity, long-term continuous use scenarios, the heat generated by the electronic components inside the screen increases significantly. If the heat cannot be dissipated in time, the screen temperature will continue to rise, causing problems such as performance degradation of the liquid crystal material, color distortion, and decreased display response speed, thus shortening the lifespan of the screen.

[0004] Currently, most common LCD screens adopt active heat dissipation designs such as generating air convection; however, for safety and aesthetic reasons, most LCD screens are often installed flush against the wall. In this installation state, the gap between the back of the screen and the wall is extremely small, and air circulation is severely restricted, causing heat to easily accumulate on the back, forming a "heat retention" effect, which weakens the actual heat dissipation effect. Summary of the Invention

[0005] In view of the above-mentioned defects in the prior art, the present invention provides a liquid crystal display screen with heat dissipation function that has stronger heat dissipation capability, without being affected by the installation method of the display screen.

[0006] The technical solution is as follows: A liquid crystal display screen with heat dissipation function, comprising: a display screen; a fixing plate, the fixing plate being fixedly connected to the back side of the display screen; a cooling chamber, the cooling chamber being fixedly connected to the back side of the fixing plate, the cooling chamber being folded and arranged in a circular shape and fully covering the surface of the fixing plate, the cooling chamber being filled with coolant for absorbing and transferring heat; the cooling chamber having an empty space at a position corresponding to the upper part of the fixing plate to form a heat exchange cavity; a first mounting plate, the first mounting plate being fixedly connected to the cooling chamber and covering one side of the heat exchange cavity; a blower, the first mounting plate being fixedly connected to at least two sets of blowers with their air outlet direction facing upward; a dust cover, the first mounting plate being fixedly connected to a dust cover for intercepting dust and covering the blower; a second mounting plate, the cooling chamber being fixedly connected to a second mounting plate and covering the other side of the heat exchange cavity; a dust filter, the second mounting plate being provided with a dust filter for intercepting dust; and a propulsion wheel, the propulsion wheel being rotatably connected inside the cooling chamber, the rotation of which promotes the circulation of coolant inside the cooling chamber.

[0007] Optionally, the fixing plate is made of heat-absorbing material; the device also includes: a heat exchange surface, which is fixedly connected to the fixing plate, is vertically arranged on the fixing plate, and is arranged around the cooling chamber so that the cooling chamber is embedded therein.

[0008] Optionally, the cooling chambers are provided in at least three sets for modular, zoned heat dissipation.

[0009] Optionally, the device further includes: a first temperature sensor, which is fixedly connected between the fixed plate and the display screen. The number and position of the first temperature sensor correspond to the cooling chamber, and its built-in control module is electrically connected to the blower.

[0010] Optionally, the device further includes: a first rotating shaft, rotatably connected to a first mounting plate and coaxially fixed with the impeller of the blower; a mounting frame, fixedly connected to the cooling chamber and disposed within the heat exchange cavity; and a transmission gear set, provided between the mounting frame and the first rotating shaft, consisting of a driving gear and a driven gear, which mesh with each other and have a gear ratio, wherein the driving gear is fixed to the first rotating shaft, and the driven gear rotates on the mounting frame. Each cooling chamber is provided with at least two transmission gear sets, and the gear ratio of each set is arranged from top to bottom as follows: The control group is located on the cooling chamber and is situated within the heat exchange cavity. It consists of an electric actuator, a splined shaft, a locking block, and a return spring. The electric actuator is fixed to the cooling chamber. The splined shaft is rotatably mounted on the end of the electric actuator and passes through each set of driven gears, connecting to the impeller key. The locking block is radially slidable on the splined shaft, and there are at least two sets of these blocks, evenly distributed along the circumference of the splined shaft. The return spring is fixed between the splined shaft and the locking block. Each set of driven gears has a groove on its inner ring for engaging with the locking block, allowing the driven gear to rotate with the splined shaft.

[0011] Optionally, the device further includes: a second temperature sensor, which is fixedly connected to the mounting plate and is disposed against the cooling chamber, and its built-in control module is electrically connected to the electric actuator.

[0012] Optionally, the device further includes: a second rotating shaft, which is fixedly connected to each set of dustproof nets, and the end of the second rotating shaft is rotatably connected to a fixed plate.

[0013] Optionally, the device further includes: a helical gear set, wherein in each cooling chamber, a helical gear set is provided between a second rotating shaft and a first rotating shaft on the same side, the helical gear set being composed of two meshing helical gears and coaxially fixed to the second rotating shaft and the first rotating shaft respectively; and a transmission belt set, wherein a transmission belt set is provided between two sets of dustproof nets in the same cooling chamber, the transmission belt set being composed of two transmission wheels respectively fixed on the two sets of second rotating shafts, and a transmission belt wound between the two transmission wheels.

[0014] The beneficial effects of this invention are: This invention effectively solves the defects of traditional LCD screens under high-intensity use, especially when installed on a wall, due to limited air circulation, which leads to poor heat dissipation and easy heat accumulation. It significantly improves heat dissipation efficiency and uniformity, and ensures the stability and reliability of this invention under long-term high-load operation.

[0015] This invention significantly increases the effective contact area between the cooling chamber and the fixed plate by increasing the heat exchange surface, and, combined with a fixed plate that has a greater heat absorption capacity, further improves the efficiency of heat transfer from the display screen to the cooling chamber, thereby enhancing the heat dissipation effect of this invention.

[0016] This invention achieves zoned heat dissipation to differentiate heat dissipation control for different areas of the display screen, thereby improving the targeting of heat dissipation and optimizing energy consumption.

[0017] This invention will enable autonomous positive feedback adjustment of the heat dissipation structure—the higher the coolant temperature, the faster the internal circulation and external heat dissipation rates will automatically increase; this will effectively solve the problems of lag in thermal response and fixed efficiency in traditional heat dissipation solutions, and significantly improve the heat dissipation response speed and overall energy efficiency of this invention under high heat loads.

[0018] This invention controls the periodic rotation of the dust filter to effectively shake off or centrifugally remove dust accumulated on its surface, avoiding a decrease in airflow due to dust blockage, thus ensuring the long-term unobstructed flow of the heat dissipation airflow channel and guaranteeing the consistency and reliability of the heat dissipation effect throughout the entire life cycle of the invention. Furthermore, it allocates the power of the blower's rotating main shaft to drive the rotation of the dust filter, realizing the multi-functional utilization of a single power source, thereby simplifying the structure and improving the overall energy efficiency of the machine. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure in partial cross-section of the present invention.

[0021] Figure 3 This is a separate diagram of the connection structure of the display screen, the fixing plate, and the cooling chamber in this invention.

[0022] Figure 4 This is a cross-sectional view of the connection structure of the blower, dustproof net and impeller in the cooling chamber in this invention.

[0023] Figure 5 This is a cross-sectional view of the connection structure of the mounting bracket, the speed-changing gear set, and the control group in the cooling chamber in this invention.

[0024] Figure 6This is a cross-sectional view of the connection structure between the speed-changing gear set and the control set in this invention.

[0025] Figure 7 This is a schematic diagram of the connection structure between the blower and the dustproof net in this invention.

[0026] The markings in the attached diagram are as follows: 000: Display screen, 010: Fixing plate, 011: Heat exchange surface, 020: Cooling chamber, 021: Heat exchange cavity, 030: Blower, 031: First mounting plate, 032: Dust cover, 033: First rotating shaft, 040: Dust screen, 041: Second mounting plate, 042: Second rotating shaft, 050: Push wheel, 060: First temperature sensor, 070: Helical gear set, 080: Drive belt set, 110: Mounting bracket, 120: Speed ​​change gear set, 121: Driving gear, 122: Driven gear, 130: Control group, 131: Electric push rod, 132: Splined shaft, 133: Locking block, 134: Return spring, 135: Slot, 140: Second temperature sensor. Detailed Implementation

[0027] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0028] Example: A liquid crystal display screen with heat dissipation function, combined with Figures 1-4 As shown, it includes: a display screen 000, which is the main display unit; a fixing plate 010, which is fixedly installed on the back side of the display screen 000; a cooling chamber 020, which is fixedly installed on the back side of the fixing plate 010. The cooling chamber 020 is folded and spread out over the surface of the fixing plate 010 and is filled with a coolant with a high specific heat capacity for rapid absorption and transfer of heat; a heat exchange cavity 021 is formed in the cooling chamber 020 at a position corresponding to the upper part of the fixing plate 010; a first mounting plate 031, which is fixedly installed on the cooling chamber 020 and covers the upper side of the heat exchange cavity 021; and a blower 030, which is the first mounting plate. Two sets of blowers 030 are fixedly installed on plate 031, with their air outlet direction facing upwards to enhance the heat dissipation airflow; a dust cover 032 is fixedly installed on the first mounting plate 031, covering the blowers 030 to prevent dust from entering the heat exchange chamber 021; a second mounting plate 041 is fixedly installed on the cooling chamber 020, covering the front side of the heat exchange chamber 021; a dust screen 040 is provided on the second mounting plate 041 to intercept dust and impurities during air intake; a propeller 050 is rotatably installed inside the cooling chamber 020, and its rotation can promote the circulation of coolant inside the cooling chamber 020.

[0029] When this equipment is in operation, the coolant in the cooling chamber 020 continuously absorbs the heat generated by the display screen 000 during operation, achieving heat exchange and cooling of the display screen 000 and ensuring its safe operation. When the display screen 000 generates a surge in heat due to high-intensity operation, the blower 030 is activated. When it is working, it guides the external airflow from the dustproof net 040 into the heat exchange chamber 021, forming forced convection, and then exhausting it upwards. This design addresses the problem of "heat retention" and low heat dissipation efficiency caused by the easy accumulation of heat in the narrow space behind the display screen 000 when it is installed against the wall. When the airflow generated by the blower 030 flows through the heat exchange chamber 021, it will accelerate the heat dissipation rate of the coolant inside the cooling chamber 020.

[0030] At the same time, controlling the rotation of the impeller 050 drives the coolant to circulate more rapidly within the folding, rotating cooling chamber 020. This not only improves the uniformity of heat dissipation of the coolant itself, but also ensures that heat is quickly and evenly dissipated from the heat-generating area of ​​the display screen 000, preventing localized overheating.

[0031] This equipment utilizes an active heat dissipation architecture that combines "coolant circulation heat absorption and conduction" with "open area air cooling," effectively addressing the shortcomings of traditional LCD screens under high-intensity use, especially when mounted on a wall, due to limited airflow and poor heat dissipation, which can easily lead to heat accumulation. This significantly improves heat dissipation efficiency and uniformity, ensuring the stability and reliability of the equipment under long-term high-load operation.

[0032] Combination Figure 1 and Figure 3 As shown, the fixed plate 010 is made of heat-absorbing material; the equipment also includes: heat exchange surface 011, which is fixedly installed on the fixed plate 010, is vertically arranged on the fixed plate 010, and is arranged around the cooling chamber 020, so that the cooling chamber 020 is embedded therein.

[0033] That is, this device significantly increases the effective contact area between the cooling chamber 020 and the fixed plate 010 through the heat exchange surface 011, and combined with the fixed plate 010 which has a greater heat absorption capacity, further improves the efficiency of heat transfer from the display screen 000 to the cooling chamber 020, thereby improving the heat dissipation effect of this device.

[0034] Combination Figure 1 and Figure 3 As shown, the cooling chamber 020 is provided with six sets, which modularizes its cooling area to achieve zoned heat dissipation and further improve the heat dissipation efficiency and flexibility of the equipment. The equipment also includes: a first temperature sensor 060, which is fixedly installed between the fixing plate 010 and the display screen 000. There are six sets of the first temperature sensor 060, which are arranged corresponding to each cooling chamber 020. Its built-in control module is electrically connected to the blower 030.

[0035] When the display screen 000 has regional temperature differences, the first temperature sensor 060 of the corresponding area will monitor the temperature signal in real time and automatically adjust the operation of the blower 030 of the cooling chamber 020 in that area through its built-in control module to accelerate heat dissipation in the high-temperature area, thereby improving the overall heat dissipation effect and operating efficiency.

[0036] That is, this device achieves zoned heat dissipation to carry out differentiated heat dissipation control for the heat distribution in different areas of the display screen, thereby improving the targeting of heat dissipation and optimizing energy consumption.

[0037] Combination Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the device also includes: a first rotating shaft 033, which is rotatably mounted on a first mounting plate 031 and is coaxially fixed with the impeller of the blower 030; a mounting frame 110, which is fixedly mounted on the cooling chamber 020 and is located inside the heat exchange chamber 021; a speed-changing gear set 120, which is provided between the mounting frame 110 and the first rotating shaft 033, and consists of a driving gear 121 and a driven gear 122, which mesh with each other and have a gear ratio. The driving gear 121 is fixed on the first rotating shaft 033, and the driven gear 122 rotates on the mounting frame 110. Each cooling chamber 020 is provided with three sets of speed-changing gear sets 120, and the gear ratio of each set increases sequentially from top to bottom; and a control group 130, which is provided on the cooling chamber 020 and is located inside the heat exchange chamber 021. The device comprises a push rod 131, a splined shaft 132, a locking block 133, and a return spring 134. The electric push rod 131 is fixed to the cooling chamber 020. The splined shaft 132 is rotatably mounted on the end of the electric push rod 131 and passes through each set of driven gears 122, connecting to the push wheel 050 via a key. The locking block 133 is radially slidably mounted on the splined shaft 132, with four sets evenly distributed around the circumference of the splined shaft 132. The return spring 134 is fixed between the splined shaft 132 and the locking block 133. Each set of driven gears 122 has a groove 135 on its inner ring for engaging with the locking block 133, allowing the driven gear 122 to rotate with the splined shaft 132. A second temperature sensor 140 is fixedly mounted on the fixing plate 010, positioned against the cooling chamber 020. Its built-in control module is electrically connected to the electric push rod 131.

[0038] This device will autonomously adjust its heat dissipation rate by detecting the coolant temperature. Its working principle is as follows: When the second temperature sensor 140 senses an increase in coolant temperature, its control module will activate the electric actuator 131. The electric actuator 131 drives the spline shaft 132 to generate axial displacement, causing the locking block 133 on it to engage with the slot 135 in the driven gear 122 with the target gear ratio. That is, by selecting a gear set 120 with different gear ratios, the speed transmission ratio between the first rotating shaft 033 and the spline shaft 132 can be changed, ultimately realizing the speed adjustment of the thrust wheel 050. Therefore, when the coolant temperature is high, this equipment can automatically select a gear set with a larger gear ratio, so that the pusher wheel 050 can obtain a higher speed under the drive of the blower 030, which directly accelerates the circulation speed of the coolant in the entire cooling chamber 020, so that it can flow through the heat exchange chamber 021 area more quickly for efficient heat dissipation. The forced airflow formed by the continuous operation of the blower 030 further enhances the heat dissipation effect of the heat exchange chamber 021.

[0039] This equipment will be able to achieve autonomous positive feedback adjustment of the heat dissipation structure—the higher the coolant temperature, the faster the internal circulation and external heat dissipation rates will automatically increase; this will effectively solve the problems of lag in thermal response and fixed efficiency in traditional heat dissipation solutions, and significantly improve the heat dissipation response speed and overall energy efficiency of this equipment under high heat loads.

[0040] Combination Figure 2 and Figure 7 As shown, the dustproof net 040 is rotatably mounted on the second mounting plate 041. The equipment also includes: a second rotating shaft 042, which is fixedly mounted on each set of dustproof nets 040. The end of the second rotating shaft 042 is rotatably mounted on the fixed plate 010 so that the dustproof net 040 can rotate through the axis of the second rotating shaft 042; a helical gear set 070, which is provided between each second rotating shaft 042 and the first rotating shaft 033 on the same side in each cooling chamber 020. The helical gear set 070 is composed of two meshing helical gears and is coaxially fixed to the second rotating shaft 042 and the first rotating shaft 033 respectively; and a transmission belt set 080, which is provided between two sets of dustproof nets 040 in the same cooling chamber 020. The transmission belt set 080 is composed of two transmission wheels fixed on the two sets of second rotating shafts 042 respectively, and a transmission belt wound between the two transmission wheels.

[0041] When the impeller of the blower 030 rotates, it drives the first rotating shaft 033 to rotate synchronously. Through the meshing transmission of the helical gear set 070, the power is transmitted to the second rotating shaft 042, which in turn drives the dust screen 040 connected to it to rotate. The transmission belt set 080 realizes the synchronous rotation linkage between the dust screens 040 in the same cooling chamber 020.

[0042] This equipment controls the periodic rotation of the dust filter 040 to effectively shake off or centrifugally remove dust accumulated on its surface, avoiding a decrease in airflow due to dust blockage. This ensures the long-term unobstructed flow of the heat dissipation airflow channel and guarantees the consistency and reliability of the heat dissipation effect throughout the entire life cycle of the equipment. The equipment also allocates the rotational main shaft power of the blower 030 to drive the rotation of the dust filter 040, realizing the multi-functional utilization of a single power source, simplifying the structure and improving the overall energy efficiency.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A liquid crystal display screen with heat dissipation function, characterized in that, include: Display screen (000); Fixing plate (010), the fixing plate (010) is fixedly connected to the back side of the display screen (000); Cooling chamber (020), the cooling chamber (020) is fixedly connected to the back side of the fixing plate (010), the cooling chamber (020) is folded and spread out on the surface of the fixing plate (010), and is filled with coolant to absorb and transfer heat; the cooling chamber (020) forms a heat exchange cavity (021) at the position corresponding to the upper part of the fixing plate (010); First mounting plate (031), the first mounting plate (031) is fixedly connected to the cooling chamber (020), and covers one side of the heat exchange cavity (021); Blower (030), the first mounting plate (031) is fixedly connected to the cooling chamber (020). At least two sets of blowers (030) are fixedly connected to the plate (031), with their air outlet direction facing upward; a dust cover (032) is fixedly connected to the first mounting plate (031) for intercepting dust, which covers the blower (030); a second mounting plate (041) is fixedly connected to the cooling chamber (020), which covers the other side of the heat exchange chamber (021); a dust net (040) is provided on the second mounting plate (041) for intercepting dust; a pusher wheel (050) is rotatably connected inside the cooling chamber (020), whose rotation will promote the circulation of coolant inside the cooling chamber (020).

2. A liquid crystal display screen with heat dissipation function according to claim 1, characterized in that, The fixed plate (010) is made of heat-absorbing material; the device also includes a heat exchange surface (011), which is fixedly connected to the fixed plate (010), is vertically arranged on the fixed plate (010), and is arranged around the cooling chamber (020), so that the cooling chamber (020) is embedded therein.

3. A liquid crystal display screen with heat dissipation function according to claim 2, characterized in that, The cooling chamber (020) is provided with at least three sets for modular partitioned heat dissipation.

4. A liquid crystal display screen with heat dissipation function according to claim 3, characterized in that, The device also includes: a first temperature sensor (060), which is fixedly connected between the fixing plate (010) and the display screen (000). The number and position of the first temperature sensor (060) correspond to the cooling chamber (020), and its built-in control module is electrically connected to the blower (030).

5. A liquid crystal display screen with heat dissipation function according to claim 4, characterized in that, The device further includes: a first rotating shaft (033), which is rotatably connected to a first mounting plate (031) and is coaxially fixed with the impeller of the blower (030); a mounting frame (110), which is fixedly connected to the cooling chamber (020) and is located in the heat exchange chamber (021); a speed-changing gear set (120), which is provided between the mounting frame (110) and the first rotating shaft (033), and is composed of a driving gear (121) and a driven gear (122), which mesh with each other and have a gear ratio, wherein the driving gear (121) is fixed on the first rotating shaft (033) and the driven gear (122) rotates on the mounting frame (110), and each cooling chamber (020) is provided with at least two sets of speed-changing gear sets (120), and the gear ratio of each set increases sequentially from top to bottom; a control group (130), which is used for cooling... The cooling chamber (020) is equipped with a control unit (130), which is located inside the heat exchange chamber (021). It consists of an electric push rod (131), a splined shaft (132), a locking block (133), and a return spring (134). The electric push rod (131) is fixed to the cooling chamber (020), and the splined shaft (132) is rotatably located at the end of the electric push rod (131) and passes through each set of driven gears (122), and is keyed to the impeller (050). The connection is made of a locking block (133) which is radially slidably disposed on the spline shaft (132), and at least two sets are provided, which are evenly distributed along the circumference of the spline shaft (132). The return spring (134) is fixed between the spline shaft (132) and the locking block (133). Each set of driven gears (122) has a groove (135) on its inner ring, which is used to cooperate with the locking block (133) so that the driven gear (122) follows the spline shaft (132) to rotate.

6. A liquid crystal display screen with heat dissipation function according to claim 5, characterized in that, The device also includes a second temperature sensor (140), which is fixedly connected to the fixing plate (010), is set against the cooling chamber (020), and its built-in control module is electrically connected to the electric push rod (131).

7. A liquid crystal display screen with heat dissipation function according to claim 6, characterized in that, The device further includes: a second rotating shaft (042), which is fixedly connected to each set of dustproof nets (040), and the end of the second rotating shaft (042) is rotatably connected to the fixed plate (010).

8. A liquid crystal display screen with heat dissipation function according to claim 7, characterized in that, The device further includes: a helical gear set (070), in each cooling chamber (020), a helical gear set (070) is provided between a second rotating shaft (042) on the same side and a first rotating shaft (033), the helical gear set (070) is composed of two meshing helical gears, and is coaxially fixed with the second rotating shaft (042) and the first rotating shaft (033) respectively; a transmission belt set (080), a transmission belt set (080) is provided between two sets of dustproof nets (040) in the same cooling chamber (020), the transmission belt set (080) is composed of two transmission wheels respectively fixed on the two sets of second rotating shafts (042), and a transmission belt wound between the two transmission wheels.

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