Heat dissipation mechanism and display device thereof

Abstract

The present invention provides a heat dissipation mechanism and a display device thereof. The heat dissipation mechanism dissipates heat for a display module and a heating module of a display device, and the heat dissipation mechanism comprises a frame structure, a first fan, and a heat-conducting cover structure comprising first, second, and third covers. The first cover is connected to the frame structure to form a first space for accommodating the display module, the second cover has an air inlet and an air outlet and is connected to the first cover to form an air flow channel, and the third cover is connected to the second cover to form a second space for accommodating the heating module. The first fan is arranged at the air inlet to guide air into the air flow channel and leave from the air outlet to form a heat dissipation airflow to dissipate heat for the display module and the heating module.

Description

Technical Field

[0001] The present invention relates to a heat dissipation mechanism and a display device thereof, and in particular to a heat dissipation mechanism and a display device thereof, which use a cover to form an air flow channel and use a fan to generate a heat dissipation airflow in the air flow channel to dissipate heat for a display module and a heating module. Background Art

[0002] Since display devices installed in outdoor environments usually have waterproof and dustproof functions to ensure that the display devices can operate normally, display devices generally used for outdoor display adopt a closed shell design, that is, the main electronic components of the display device (such as display panel module, control circuit board module, etc.) are arranged in a closed space formed by the front frame, transparent glass and cover body, so as to effectively prevent foreign matter (such as water vapor or dust, etc.) from entering the interior of the display device and causing problems such as circuit short circuit or component corrosion.

[0003] However, for the above-mentioned display device adopting a closed shell design, since the heat energy generated by the various electronic components inside the display device will be superimposed and accumulated in the closed space and cannot be quickly discharged from the closed space, it is often easy for the electronic components inside the display device to crash or even burn due to internal overheating, thereby greatly affecting the safety of use, operational stability, and service life of the display device in outdoor environments. Summary of the invention

[0004] One of the purposes of the present invention is to provide a heat dissipation mechanism and a display device thereof, which uses a cover to form an air flow channel and uses a fan to generate a heat dissipation airflow in the air flow channel to dissipate heat from a display module and a heat generating module, so as to solve the above-mentioned problem.

[0005] According to one embodiment, the heat dissipation mechanism of the present invention dissipates heat for a display module and a heating module of a display device, and the heat dissipation mechanism includes a frame structure, a heat-conducting cover structure, and a first fan. The heat-conducting cover structure includes a first cover, a second cover, and a third cover. The first cover is connected to the frame structure to form a first space together, and the display module is accommodated in the first space. The second cover has an air inlet and an air outlet and is connected to the first cover to form an air flow channel together. The third cover is connected to the second cover to form a second space together, and the heating module is accommodated in the second space. The first fan is arranged at one of the air inlet and the air outlet, and is used to guide air to enter the air flow channel through the air inlet and leave from the air outlet to form a heat dissipation airflow to dissipate heat for the display module and the heating module.

[0006] According to another embodiment, the display device of the present invention includes a display module, a heating module, and a heat dissipation mechanism. The heating module is electrically connected to the display module. The heat dissipation mechanism includes a frame structure, a heat-conducting cover structure, and a first fan. The heat-conducting cover structure includes a first cover, a second cover, and a third cover. The first cover is connected to the frame structure to form a first space together, and the display module is accommodated in the first space. The second cover has an air inlet and an air outlet and is connected to the first cover to form an air flow channel together. The third cover is connected to the second cover to form a second space together, and the heating module is accommodated in the second space. The first fan is arranged at one of the air inlet and the air outlet, and is used to guide air to enter the air flow channel through the air inlet and leave from the air outlet to form a heat dissipation airflow to dissipate heat to the display module and the heating module.

[0007] In summary, by separating the display module and the heat generating module that generate high heat energy during operation and arranging them in different spaces formed by the cover body and the front frame, and forming an air flow channel between the covers to generate heat dissipation airflow through the rotation of the fan, the present invention can not only improve the situation where the heat energy generated by the various electronic components inside the display device is superimposed and accumulated, but also effectively solve the problem mentioned in the prior art that the heat energy cannot be quickly discharged from the closed space, thereby effectively avoiding the situation where the electronic components inside the display device crash or even burn out due to internal overheating, thereby greatly improving the use safety, operation stability and service life of the display device in outdoor environments.

[0008] The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. 4 is a schematic three-dimensional diagram of a display device according to an embodiment of the present invention.

[0010] Figure 2 for Figure 1 A rear view of the display device.

[0011] Figure 3 for Figure 2 A simplified cross-sectional diagram of a display device along section line AA.

[0012] Figure 4 for Figure 3 A partially enlarged schematic diagram of the heating module.

[0013] The reference numerals are as follows:

[0014] 10: Display Device

[0015] 12: Display module

[0016] 14: Heating module

[0017] 16: Heat dissipation mechanism

[0018] 18: Frame structure

[0019] 20: Thermal cover structure

[0020] 22: First Fan

[0021] 24: First cover

[0022] 26: Second cover

[0023] 28: The third cover

[0024] 30: front frame

[0025] 32: Translucent glass

[0026] 34: First Space

[0027] 36: Air flow channel

[0028] 38: Second Space

[0029] 40: Air inlet

[0030] 42: Air outlet

[0031] 44: Cooling airflow

[0032] 46, 48, 52: Thermal pads

[0033] 50: Heat pipe structure

[0034] 54: Heat pipe

[0035] 56: Cooling fins

[0036] 58: Heat Source

[0037] 60: Second Fan DETAILED DESCRIPTION

[0038] See also Figure 1 , Figure 2 ,as well as Figure 3 , Figure 1 is a three-dimensional schematic diagram of a display device 10 proposed according to an embodiment of the present invention, Figure 2 for Figure 1 A rear view of the display device 10, Figure 3 for Figure 2 A schematic cross-sectional view of the display device 10 along the section line AA is shown in FIG. Figure 1 , Figure 2 ,as well as Figure 3As shown, the display device 10 includes a display module 12, a heating module 14, and a heat dissipation mechanism 16. In order to clearly present the heat dissipation design of the display device 10, the housing structure of the display device 10 and the related modules are arranged in Figure 3 The display module 12 may be a commonly used panel device for image display (such as a liquid crystal display module (LCM), but not limited thereto) and may include image display related components (such as a light source, an array glass substrate, a liquid crystal layer, etc.), and the heating module 14 may preferably be a commonly used circuit board module for image display control (but not limited thereto) and electrically connected to the display module 12, and the above-mentioned circuit board module may include image display related components (a motherboard, a central processing unit, a power supply, a power adapter, etc.) for image display control of the display module 12, and the related descriptions of the display module 12 and the heating module 14 (such as the wire connection configuration, the display control circuit design, etc.) are commonly found in the prior art and will not be repeated here.

[0039] In terms of the design of the arrangement of the heat dissipation mechanism 16, the display module 12 and the heating module 14, Figure 2 as well as Figure 3 It can be seen that the heat dissipation mechanism 16 includes a frame structure 18, a heat conductive cover structure 20 (preferably made of aluminum plate material, but not limited to this heat conductive material), and at least one first fan 22 (at Figure 2 The heat conductive cover structure 20 includes a first cover 24 , a second cover 26 , and a third cover 28 . The frame structure 18 can preferably adopt a frame design commonly used in display devices to accommodate the display module 12 and the heating module 14 respectively with the first cover body 24, the second cover body 26, and the third cover body 28. For example, in this embodiment, the frame structure 18 can include a front frame 30 and a light-transmitting glass 32. The front frame 30 is connected to the first cover body 24 and the light-transmitting glass 32 is joined to the front frame 30, so that the first cover body 24, the front frame 30 and the light-transmitting glass 32 can jointly form a first space 34 for accommodating the display module 12, wherein the first space 34 can preferably be a closed space. For example, the connection method between the front frame 30 and the first cover body 24 and the light-transmitting glass 32 can preferably adopt an adhesive sealing joint method (but not limited to this) to further provide a waterproof and dustproof closed protection function for the display module 12 accommodated in the first space 34.

[0040] Similarly, the second cover 26 is connected between the first cover 24 and the third cover 28, so that the second cover 26 and the first cover 24 can form an air channel 36 to allow heat dissipation airflow to pass through, and the second cover 26 and the third cover 28 can form a second space 38 to accommodate the heating module 14, wherein the air channel 36 can preferably separate the first space 34 and the second space 38 to avoid the heat energy superposition effect, and the second space 38 can preferably be a closed space. For example, the connection between the second cover 26 and the third cover 28 can preferably adopt an adhesive sealing joint method (but not limited to this) to further provide a waterproof and dustproof closed protection function for the heating module 14 accommodated in the second space 38. In addition, in this embodiment, by Figure 3 It can be seen that at least a portion of the first cover body 24 can preferably protrude toward the display module 12, and at least a portion of the second cover body 26 can preferably protrude toward the heating module 14 (but not limited to this), so as to expand the flow channel width of the air flow channel 36, thereby increasing the heat dissipation airflow flow rate to improve the heat dissipation efficiency of the heat dissipation mechanism 16.

[0041] As for the heat dissipation design of the heat dissipation mechanism 16, Figure 2 as well as Figure 3 As shown, the second cover 26 has at least one air inlet 40 (at Figure 2 Two are shown in the figure, but not limited thereto) and at least one air outlet 42 (at Figure 2 In the embodiment, three are shown, but not limited to this), the first fan 22 is disposed at the air inlet 40 (but not limited to this, in another embodiment, the first fan 22 can also be disposed at the air outlet 42 to guide the air to leave from the air outlet 42), thereby, the first fan 22 can be used to guide the air to enter the air channel 36 through the air inlet 40 and leave from the air outlet 42 to form a heat dissipation airflow 44. At the same time, through the thermal conductivity of the first cover body 24 and the second cover body 26, the heat energy generated by the display module 12 and the heating module 14 during operation will be respectively conducted to the air channel 36 through the first cover body 24 and the second cover body 26, and will be absorbed and carried away by the heat dissipation airflow 44 formed by the rotation of the first fan 22 and leave from the air outlet 42, thereby generating a heat dissipation effect of quickly discharging the heat energy accumulated in the first space 34 and the second space 38 to the outside.

[0042] In this way, by separating the display module and the heat generating module that will generate high heat energy during operation and arranging them in different spaces formed by the cover body and the front frame, and forming an air flow channel between the covers to generate heat dissipation airflow through the rotation of the fan, the present invention can not only improve the situation where the heat energy generated by the various electronic components inside the display device is superimposed and accumulated, but also effectively solve the problem mentioned in the prior art that the heat energy cannot be quickly discharged from the closed space to the outside, thereby effectively avoiding the situation where the electronic components inside the display device crash or even burn out due to internal overheating, thereby greatly improving the use safety, operation stability and service life of the display device in outdoor environments.

[0043] It is worth mentioning that in order to further improve the heat dissipation efficiency of the heat transfer to the heat dissipation airflow, the present invention can adopt the configuration of the thermal conductive pad. For example, see Figure 3 as well as Figure 4 , Figure 4 for Figure 3 The heat-generating module 14 is a partially enlarged schematic diagram of the heat-generating module 14, wherein in order to clearly present the heat-conducting design of the heat-generating module 14, the related components of the heat-generating module 14 are arranged in Figure 4 The figure is shown with simple lines, but its practical application is not limited to this. Figure 3 As shown, the heat dissipation mechanism 16 may further include at least one thermally conductive pad 46 (at Figure 3 19 are shown in the figure, but not limited thereto), the thermal pad 46 can be preferably made of a material with a high thermal conductivity (such as thermal conductive silicone, etc.) and attached between the display module 12 and the first cover 24. Specifically, the thermal pad 46 can be attached to the position of the component that generates high heat energy (such as a light-emitting diode light bar, etc.) in the corresponding display module 12, so as to quickly conduct the heat energy generated by the display module 12 during operation to the first cover 24 and then conduct it from the first cover 24 to the heat dissipation airflow 44 to take it away. In addition, if Figure 4 As shown, the heat dissipation mechanism 16 may further include at least one thermally conductive pad 48 (at Figure 4 The thermal pad 48 is preferably made of a material with a high thermal conductivity (such as thermally conductive silicone, etc.) and is attached between the heating module 14 and the second cover 26. Specifically, the thermal pad 48 can be attached to the position of the component that generates high heat energy (such as a central processing unit, a high-power power supply, a power adapter, etc.) in the corresponding heating module 14, so as to quickly conduct the heat energy generated by the heating module 14 during operation to the second cover 26 and then conduct it from the second cover 26 to the heat dissipation airflow 44 to be taken away.

[0044] In practical applications, the present invention can further adopt a design in which the thermal conductive pad is attached to the position of the heat dissipation device inside the display device. For example, Figure 4It can be seen that the heat dissipation mechanism 16 may further include a heat pipe structure 50 and at least one thermally conductive pad 52 (at Figure 4 The heat pipe structure 50 includes a heat pipe 54 and a heat sink fin 56. The heat pipe 54 is connected between the heat sink fin 56 and a heat source 58 (such as a central processing unit, a high-power power supply, a power adapter, etc.) of the heat generating module 14, and the thermally conductive gasket 52 is disposed between the heat sink fin 56 and the second cover 26. Thus, the heat pipe 54 can transfer the heat energy generated by the heat source 58 to the heat sink fin 56 to produce a local heat dissipation effect. At the same time, the thermally conductive gasket 52 attached to the bottom of the heat sink fin 56 can quickly transfer the heat energy transferred to the heat sink fin 56 to the second cover 26 and then transfer the heat energy from the second cover 26 to the heat dissipation airflow 44 to be taken away, thereby further improving the heat dissipation efficiency of the heat dissipation mechanism 16.

[0045] In addition, the present invention may also adopt a design in which another fan is arranged at the air outlet. For example, Figure 3 As shown, the heat dissipation mechanism 16 may further include a second fan 60, which is disposed at the air outlet 42 (but not limited thereto, the present invention may also adopt a design in which the first fan 22 is disposed at the air outlet 42 and the second fan 60 is disposed at the air inlet 40), whereby the second fan 60 may be used to guide the air entering the air channel 36 to leave the air outlet 42 more quickly to increase the flow rate of the heat dissipation airflow 44, thereby further improving the heat dissipation efficiency of the heat dissipation mechanism 16. It should be noted that after a period of use, the display device 10 may be operable to control the first fan 22 and the second fan 60 to rotate in the opposite direction, so that the first fan 22 and the second fan 60 rotating in the opposite direction may guide the air to enter the air channel 36 through the air outlet 42 and leave the air inlet 40 in the opposite direction, so that a reverse airflow is formed in the air channel 36 that flows in the opposite direction to the heat dissipation airflow 44, thereby blowing away foreign matter such as dust accumulated at the air inlet 40 from the display device 10, thereby achieving a cleaning and dust removal effect.

[0046] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the claims of the present invention should fall within the scope of the present invention.

Claims

1. A heat dissipation mechanism for dissipating heat from a display module and a heating module of a display device, the heat dissipation mechanism comprising: A frame structure; A heat-conducting cover structure, comprising a first cover, a second cover, and a third cover, wherein the first cover is connected to the frame structure to form a first space, wherein the display module is accommodated in the first space, wherein the second cover has an air inlet and an air outlet and is connected to the first cover to form an air flow channel, wherein the third cover is connected to the second cover to form a second space, wherein the heat-generating module is accommodated in the second space; and a first fan, which is disposed at one of the air inlet and the air outlet, and is used to guide air to enter the air channel through the air inlet and leave from the air outlet to form a heat dissipation airflow to dissipate heat from the display module and the heat generating module; The first space and the second space are enclosed spaces.

2. The heat dissipation mechanism as claimed in claim 1, wherein the frame structure comprises a front frame and a light-transmitting glass, and the light-transmitting glass is joined to the front frame to form the first space together with the front frame and the first cover.

3. The heat dissipation mechanism according to claim 1, further comprising: At least one thermally conductive pad is attached between the display module and the first cover body and is used for conducting the heat energy generated by the display module to the first cover body.

4. The heat dissipation mechanism according to claim 1, further comprising: At least one heat-conducting pad is attached between the heating module and the second cover body, and is used for conducting the heat energy generated by the heating module to the second cover body.

5. The heat dissipation mechanism according to claim 1, further comprising: A second fan is disposed at the other of the air inlet and the air outlet, and is used for guiding air to leave from the air outlet.

6. The heat dissipation mechanism according to claim 1, further comprising: a heat pipe structure having a heat pipe and a heat dissipation fin, wherein the heat pipe is connected between a heat source of the heat generating module and the heat dissipation fin to transfer heat energy generated by the heat source to the heat dissipation fin for heat dissipation; and At least one heat-conducting pad is disposed between the heat-dissipating fin and the second cover, and is used for conducting the heat energy conducted from the heat pipe to the heat-dissipating fin to the second cover.

7. The heat dissipation mechanism as claimed in claim 1, wherein the first fan is operable to rotate in the reverse direction to guide air to enter the air channel through the air outlet and to leave the air channel in the reverse direction from the air inlet, so that a reverse airflow is formed in the air channel. 8 . The heat dissipation mechanism as claimed in claim 1 , wherein at least a portion of the first cover protrudes toward the display module, and at least a portion of the second cover protrudes toward the heat generating module.

9. A display device comprising: a display module; a heating module electrically connected to the display module; and A heat dissipation mechanism, comprising: A frame structure; A heat-conducting cover structure, comprising a first cover, a second cover, and a third cover, wherein the first cover is connected to the frame structure to form a first space, wherein the display module is accommodated in the first space, the second cover has an air inlet and an air outlet, the second cover is connected to the first cover to form an air flow channel, the third cover is connected to the second cover to form a second space, wherein the heat-generating module is accommodated in the second space; and a first fan, which is disposed at one of the air inlet and the air outlet, and is used to guide air to enter the air channel through the air inlet and leave from the air outlet to form a heat dissipation airflow to dissipate heat from the display module and the heat generating module; The first space and the second space are enclosed spaces. 10 . The display device as claimed in claim 9 , wherein the frame structure comprises a front frame and a light-transmitting glass, and the light-transmitting glass is joined to the front frame to form the first space together with the front frame and the first cover.

11. The display device as claimed in claim 9, wherein the heat dissipation mechanism further comprises: At least one thermally conductive pad is attached between the display module and the first cover body and is used for conducting the heat energy generated by the display module to the first cover body.

12. The display device as claimed in claim 9, wherein the heat dissipation mechanism further comprises: At least one heat-conducting pad is attached between the heating module and the second cover body, and is used for conducting the heat energy generated by the heating module to the second cover body.

13. The display device as claimed in claim 9, wherein the heat dissipation mechanism further comprises: A second fan is disposed at the other of the air inlet and the air outlet, and is used for guiding air to leave from the air outlet.

14. The display device as claimed in claim 9, wherein the heat dissipation mechanism further comprises: a heat pipe structure having a heat pipe and a heat dissipation fin, wherein the heat pipe is connected between a heat source of the cover module and the heat dissipation fin to conduct heat energy generated by the heat source to the heat dissipation fin for heat dissipation; and At least one heat-conducting pad is disposed between the heat-dissipating fin and the second cover, and is used for conducting the heat energy conducted from the heat pipe to the heat-dissipating fin to the second cover.

15. The display device as claimed in claim 9, wherein the first fan is operable to rotate in the reverse direction to guide air to enter the air channel through the air outlet and to leave the air channel in the reverse direction from the air inlet, so that a reverse airflow is formed in the air channel. 16 . The display device according to claim 9 , wherein at least a portion of the first cover protrudes toward the display module, and at least a portion of the second cover protrudes toward the heat generating module. 17 . The display device as claimed in claim 9 , wherein the heat generating module is a circuit board module, and the circuit board module is electrically connected to the display module to perform image display control of the display module.

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