Screen display device

Abstract

This application provides a screen display device, including a housing, a screen assembled onto the housing, and a heat source disposed on the back of the screen. The housing and the screen together form a receiving cavity. The housing has an air inlet and an air outlet, and a heat dissipation channel communicating with the air inlet and the air outlet is formed within the receiving cavity. The heat source is disposed within the heat dissipation channel. By forming a heat dissipation channel within the receiving cavity and placing the heat source within the heat dissipation channel, the heat source dissipates heat directly through the heat dissipation channel, improving the heat dissipation effect of the screen, thereby improving the overall heat dissipation effect of the device.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a screen display device. Background Art

[0002] Screen display devices are developing towards high definition and thinness. The former has higher screen power consumption and greater heat generation, and has stronger heat dissipation requirements. The latter leads to a reduction in the outer shell area of ​​the screen display device and a compact internal structure, which has worse heat dissipation conditions. In order to meet the increasingly stringent heat dissipation requirements of screen display devices, the industry often uses fans for active heat dissipation, that is, to generate airflow in the cavity of the screen display device to take the heat out of the device. However, this method cannot directly dissipate the heat of the screen, and the heat dissipation effect of the screen is not good. Summary of the invention

[0003] The present application provides a screen display device capable of directly dissipating heat from a screen.

[0004] The present application provides a screen display device, comprising: a shell, a screen assembled on the shell, and a heat source arranged on the back of the screen, the shell and the screen enclosed to form a receiving cavity; the shell is provided with an air inlet and an air outlet, a heat dissipation channel connected to the air inlet and the air outlet is formed in the receiving cavity, and the heat source is arranged in the heat dissipation channel.

[0005] Optionally, the screen display device also includes a first isolation strip, a second isolation strip and a first isolation plate assembled on the back of the screen, the first isolation strip and the second isolation strip are respectively located on opposite sides of the heat source, the first isolation plate covers the first isolation strip and the second isolation strip, and together with the first isolation strip and the second isolation strip, form the heat dissipation channel.

[0006] Optionally, the first isolation strip and the second isolation strip are both made of insulating material and are flexible isolation strips.

[0007] Optionally, the screen display device further includes a circuit board; and the first isolation plate is the circuit board.

[0008] Optionally, the screen display device also includes an air outlet deflector assembled on the back of the screen, with a first deflector channel left between the air outlet deflector and the screen; one end of the first deflector channel is connected to the heat dissipation channel, and the other end is connected to the air outlet.

[0009] Optionally, the air outlet deflector includes a first support plate, a second support plate and a deflector assembled on the back of the screen, the first support plate and the second support plate are spaced apart, the deflector plate and the first support plate, the second support plate and the screen together form a first deflection channel, and the distance between the first support plate and the second support plate gradually decreases along the direction from the air inlet to the air outlet.

[0010] Optionally, the first support plate abuts against the first isolation strip, the second support plate abuts against the second isolation strip, and the guide plate abuts against the first isolation plate.

[0011] Optionally, a flow area of ​​the first guide channel at a side communicating with the air outlet is smaller than a flow area of ​​the air outlet.

[0012] Optionally, the gap between the air outlet guide cover and the first isolation plate does not exceed 1 mm.

[0013] Optionally, the screen display device also includes an air inlet guide cover, which is assembled on the back of the screen and leaves a second guide channel between the screen; one end of the second guide channel is connected to the air inlet, and the other end is connected to the heat dissipation channel.

[0014] Optionally, the screen display device also includes a second isolation plate, which covers the back side of the screen and is provided with an opening, wherein the opening faces the heat source, and the second isolation plate is assembled to the shell, and the first isolation strip and the second isolation strip are fixedly connected to the second isolation plate; the second isolation plate, the first isolation strip, the second isolation strip and the first isolation plate are combined to form the heat dissipation channel.

[0015] Optionally, a heat dissipation cavity is further formed in the receiving cavity, and the heat dissipation cavity is connected to the air inlet and the air outlet, one side of the first isolation plate is the heat dissipation channel, and the other side of the first isolation plate is the heat dissipation cavity.

[0016] Optionally, the screen display device further includes a fan, which is disposed at the air outlet and is partially connected to the heat dissipation channel; the fan is used to guide the airflow in the heat dissipation channel to be discharged from the air outlet.

[0017] Optionally, the shell includes a frame for assembling the screen and a rear shell connected to the frame; the air inlet and the air outlet are arranged on the frame or the rear shell.

[0018] The screen display device of the embodiment of the present application has a heat dissipation channel formed in the receiving cavity, and the heat source is arranged in the heat dissipation channel. The heat source directly dissipates heat through the heat dissipation channel, thereby improving the heat dissipation effect of the screen, thereby improving the heat dissipation effect of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic structural diagram of an embodiment of a screen display device of the present application.

[0020] Figure 2 Shown Figure 1 The screen shown is a partial exploded view of the display device.

[0021] Figure 3 Shown Figure 1 The screen shown is a partial exploded view of the display device.

[0022] Figure 4 Shown Figure 1 The screen shown is a partial perspective view of a display device from one viewing angle.

[0023] Figure 5 Shown Figure 1 The screen shown is a partial perspective view of another viewing angle of the display device.

[0024] Figure 6 Shown Figure 1 The screen shown is a partial side view schematic diagram of one direction of the display device.

[0025] Figure 7 Shown Figure 1 The screen shown is a schematic partial side view of the device from another direction. DETAILED DESCRIPTION

[0026] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0027] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. "Multiple" or "several" means at least two. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect.

[0028] The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0029] The screen display device of the embodiment of the present application includes: a housing, a screen assembled in the housing, and a heat source arranged on the back of the screen, wherein the housing and the screen enclose a receiving cavity; wherein the housing is provided with an air inlet and an air outlet, a heat dissipation channel connected to the air inlet and the air outlet is formed in the receiving cavity, and the heat source is arranged in the heat dissipation channel. A heat dissipation channel is formed in the receiving cavity, and the heat source is arranged in the heat dissipation channel. The heat source directly dissipates heat through the heat dissipation channel, thereby improving the heat dissipation effect of the screen, thereby improving the heat dissipation effect of the entire device.

[0030] In order to meet the increasingly stringent heat dissipation requirements of screen display devices, in related technologies, fans are used to actively dissipate heat for components in the housing, that is, airflow is generated in the cavity of the screen display device to take the heat out of the screen display device. For example, exhaust fans are arranged around the rear shell of the screen display device to make the air in the entire cavity flow from bottom to top or horizontally.

[0031] However, the above scheme has the following disadvantages: (1) By taking away the heat in the cavity of the screen display device, the airflow exchanges heat with the circuit board and multiple components in the screen display device, reducing the temperature in the cavity, and then indirectly reducing the temperature of the screen. The cooling of the screen is not direct enough. For relatively thin screen display devices, the space in the shell is limited, and there is a very small gap between the circuit board and the screen. Even if the air is circulated by the fan, the air between the circuit board and the screen can hardly flow, and the heat dissipation effect on the screen is minimal. (2) The fan acts on the air in the cavity of the entire screen display device, and there is no relatively concentrated channel, so it is impossible to concentrate the heat dissipation for the designated components. For example, there is no relatively concentrated channel specifically for the screen to dissipate heat, and it is impossible to perform targeted cooling for the heat source of the screen. A considerable proportion of the airflow acts on the part with less strong heat dissipation requirements, and the utilization rate and directionality of the air volume are not strong enough. (3) When designing a high-power screen display device, due to the limitations of the thickness and internal space of the device, the size of the fan cannot be freely increased, and the only way is to increase the number of fans or replace them with high-speed models, resulting in increased noise and reduced user experience. Some equipment even requires cooling fins and semiconductor coolers to assist in heat dissipation, which causes product cost, weight and maintenance difficulty to rise sharply, affecting product competitiveness.

[0032] Therefore, the present application provides a screen display device capable of directly dissipating heat from the screen. The screen display device of the present application is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0033] See also Figures 1 to 7 As shown, the screen display device 100 includes a shell 10 and a screen module 20 assembled in the shell 10. The screen module 20 includes a screen 201 and a heat source 202 arranged on the back of the screen 201. The shell 10 and the screen 201 enclose a receiving cavity 120. The shell 10 is provided with an air inlet 101 and an air outlet 102. A heat dissipation channel 103 connected to the air inlet 101 and the air outlet 102 is formed in the receiving cavity 120, and the heat source 202 is arranged in the heat dissipation channel 103. Among them, the back side of the screen 201 is the side facing away from the display surface of the screen 201. The display surface of the screen 201 is arranged to face the outside of the shell 10. The back side of the screen 201 is arranged to face the inside of the shell 10.

[0034] Since the heat of the screen module 20 mainly comes from the heat source 202. And the heat source 202 is relatively concentrated. A heat dissipation channel 103 is formed in the accommodating cavity 120, and the heat dissipation channel 103 is formed on the back of the screen 201. The heat source 202 is arranged in the heat dissipation channel 103, and the heat dissipation channel 103 can concentrate the airflow, and directly dissipate the heat generated by the heat source 202 through the heat dissipation channel 103, which solves the heat dissipation problem of the heat source 202, and solves the heat dissipation problem of the screen module 20. In this way, the heat dissipation effect of the screen 201 is improved, thereby improving the heat dissipation effect of the entire screen display device 100, reducing the temperature of the entire screen display device 100 during use, and extending the service life of the entire screen display device 100.

[0035] Compared with the related art, the back of the screen 201 forms a heat dissipation channel 103, and the heat source 202 is arranged in the heat dissipation channel 103, which can directly dissipate heat for the heat source 202. A relatively narrow heat dissipation channel 103 is formed in the receiving cavity 120 to centrally dissipate heat for the heat source 202, with strong directivity and high air volume utilization.

[0036] In some embodiments, the heat dissipation channel 103 includes a straight channel or an arc channel. Figure 4 and Figure 5 In the embodiment shown, the heat dissipation channel 103 includes an arc-shaped channel, which is conducive to gas discharge. In some other embodiments, the heat dissipation channel 103 includes a straight channel. This is not limited in the present application. Whether it is a straight channel or an arc-shaped channel, it can directly dissipate heat for the heat source 202 on the back of the screen 201.

[0037] Part of the heat of the screen display device 100 comes from the screen module 20. The heat of the screen module 20 is generated in a relatively concentrated area, mainly from the heat source 202. The screen module 20 includes at least one heat source 202. One or more heat sources 202 can be set. The heat source 202 can be a light bar or a backlight, etc., which is concentrated in one area or multiple areas on the back of the screen 201. The heat source 202 is generally set at a position close to the edge of the screen 201, which deviates from the middle area of ​​the screen 201. The heat source 202 is adapted to the extension direction of the edge of the screen 201. One or more heat dissipation channels 103 can also be formed, and its two ends are respectively connected to the air inlet 101 and the air outlet 102, and are correspondingly arranged on the surrounding side of each heat source 202, to ensure that each heat source 202 can directly dissipate heat through the heat dissipation channel 103, thereby improving the heat dissipation effect of the screen 201.

[0038] In some embodiments, the screen 201 is arranged to extend along a first direction X and a second direction Y in the same plane. Figure 2 and Figure 3In the illustrated embodiment, the first direction X and the second direction Y intersect and are perpendicular. Only one heat source 202 is shown on the back of the screen 201, and the heat source 202 is located in a position area close to the bottom edge of the screen 201 and extends along the first direction X. The heat source 202 can also be set at other positions of the screen 201, which is not limited in this application.

[0039] In some embodiments, the screen display device 100 further includes a barrier 104 and a first isolation plate 105. The barrier 104 is assembled on the back of the screen 201. The first isolation plate 105 is disposed in the housing 10. Figures 2 to 5 In the illustrated embodiment, the enclosure 104 includes a first isolation bar 1041 and a second isolation bar 1042 assembled on the back of the screen 201, and the first isolation bar 1041 and the second isolation bar 1042 are respectively located on opposite sides of the heat source 202. The first isolation plate 105 is arranged parallel to the screen 201, covers the first isolation bar 1041 and the second isolation bar 1042, and is connected to the first isolation bar 1041 and the second isolation bar 1042. The first isolation plate 105 and the first isolation bar 1041 and the second isolation bar 1042 are together enclosed to form a heat dissipation channel 103. The projected area of ​​the heat dissipation channel 103 is at least larger than the heat dissipation area of ​​the heat source 202 to ensure that the heat source 202 is in the heat dissipation channel 103. In some embodiments, the heat source 202 is arranged to extend along the first direction X. During assembly, one side of the first isolation bar 1041 and the second isolation bar 1042 is fixed to the back of the screen 201, and the first isolation bar 1041 and the second isolation bar 1042 are respectively arranged on opposite sides of the heat source 202 in the first direction X, and the first isolation plate 105 is abutted against the other side of the first isolation bar 1041 and the second isolation bar 1042 in the thickness direction Z of the screen 201 to form a heat dissipation channel 103. The thickness direction Z of the screen 201 is a plane formed by being perpendicular to the first direction X and the second direction Y. The first isolation bar 1041 and the second isolation bar 1042 can play the role of a fence. A plurality of them can be provided to form heat dissipation channels 103 with different extension directions. The first isolation bar 1041 and the second isolation bar 1042 can also support the first isolation plate 105, so that the first isolation plate 105 is at a distance from the screen 201, thereby forming a heat dissipation channel 103. Such arrangement enables the heat dissipation channel 103 to fully contact with the heat source 202 , and can concentrate on dissipating the heat for the heat source 202 of the screen 201 , which is beneficial to the heat dissipation of the heat source 202 .

[0040] In some embodiments, the first isolation strip 1041 and the second isolation strip 1042 are both made of insulating materials and are flexible isolation strips. The first isolation strip 1041 and the second isolation strip 1042 have good insulation properties to avoid short circuits. The flexible isolation strip has high elasticity and can fit well with the uneven surface of the first isolation plate 105 to ensure the air tightness of the heat dissipation channel 103. In this embodiment, the first isolation strip 1041 and the second isolation strip 1042 can be insulating foam. The insulating foam has stable insulation performance, and is safe and reliable. The insulating foam has good elasticity and is easy to bend. It can play a buffering role, facilitate assembly to form the heat dissipation channel 103, and reduce the difficulty of assembly. In addition, the insulating foam is light in weight, ultra-thin in volume, and low in cost, which is conducive to reducing the thickness of the entire screen display device 100 and reducing the cost of the entire screen display device 100.

[0041] It should be noted that a metal grid is generally provided on the back of the screen 201 to serve as an isolation function, and the flexible isolation strip can be directly assembled on the back of the screen 201. During assembly, try to avoid affecting the display surface of the screen 201, which will not be elaborated here.

[0042] In some embodiments, the screen display device 100 further includes a circuit board. The circuit board is provided with a driving circuit, a power supply circuit, and other control devices, etc., which are not limited in the present application. The circuit board is used to drive the entire screen display device 100 to work, and is also connected to the heat source 202 to supply power to the heat source 202. In some embodiments, the first isolation plate 105 is a circuit board, and the circuit board is used as an isolation plate to form a heat dissipation channel 103 with the first isolation bar 1041, the second isolation bar 1042, and the screen 201. With such a configuration, there is no need to set an isolation plate to form the heat dissipation channel 103, so that the layout of the entire screen display device 100 is more compact, and the thickness of the entire screen display device 100 can be reduced.

[0043] Furthermore, the heat of the screen display device 100 comes not only from the screen 201, but also mainly from the circuit board. Different components are provided on the upper and lower surfaces of the circuit board, and the circuit board is arranged facing the heat source 202, so that the heat source 202 is located in the heat dissipation channel 103 formed by the circuit board, the first isolation bar 1041, the second isolation bar 1042, and the screen 201. The heat source 202 can directly dissipate heat through the heat dissipation channel 103, and the components on the side of the circuit board facing the heat dissipation channel 103 can also dissipate heat through the heat dissipation channel 103, thereby reducing the heat of the entire screen display device 100.

[0044] In some embodiments, a heat dissipation cavity 106 (such as Figure 4 and Figure 5As shown in the figure, the heat dissipation cavity 106 is connected with the air inlet 101 and the air outlet 102. The heat dissipation channel 103 and the heat dissipation cavity 106 are both arranged in the receiving cavity 120. One side of the first isolation plate 105 is the heat dissipation channel 103, and the other side of the first isolation plate 105 is the heat dissipation cavity 106. The back side of the first isolation plate 105 facing the screen 201 is the heat dissipation channel 103, and the back side of the first isolation plate 105 facing away from the screen is the heat dissipation cavity 106. The receiving cavity 120 is divided into the heat dissipation channel 103 and the heat dissipation cavity 106 by the first isolation bar 1041, the second isolation bar 1042 and the first isolation plate 105. Compared with the related art, different heat dissipation channels 103 and heat dissipation cavities 106 are arranged in the receiving cavity 120, which can not only dissipate heat specifically for the heat source 202, but also dissipate heat for other components in the receiving cavity 120, thereby improving the heat dissipation effect of the entire screen display device 100. In addition, the structure of forming the above-mentioned heat dissipation channel 103 is simple and the cost is low. In this embodiment, the components on the circuit board disposed on the side facing the heat dissipation channel 103 dissipate heat through the heat dissipation channel 103, and the components on the circuit board disposed on the side facing the heat dissipation cavity 106 dissipate heat through the heat dissipation cavity 106. The screen display device 100 also includes other electronic components disposed in the heat dissipation cavity 106, which can dissipate heat through the heat dissipation cavity 106. In this arrangement, not only the screen module 20 can be dissipated, but also the circuit board can be dissipated at the same time, thereby improving the heat dissipation effect of the screen display device 100 as a whole.

[0045] In some embodiments, the screen display device 100 further includes a second isolation plate 107, which covers the back of the screen 201. The second isolation plate 107 is used to connect the first isolation bar 1041 and the second isolation bar 1042 (for example,). The second isolation plate 107 is assembled to the housing 10, and the first isolation bar 1041 and the second isolation bar 1042 are fixedly connected to the second isolation plate 107. The second isolation plate 107 is also arranged in contact with the back of the screen 201. The second isolation plate 107, the first isolation bar 1041, the second isolation bar 1042 and the first isolation plate 105 are enclosed to form a heat dissipation channel 103. The second isolation plate 107 plays a fixing role, and the first isolation bar 1041 and the second isolation bar 1042 are assembled to the second isolation plate 107 to avoid exerting pressure on the screen 201.

[0046] In some embodiments, the second isolation plate 107 is provided with an opening 108, and the opening 108 is arranged directly opposite to the heat source 202. Such an arrangement ensures that the heat source 202 is located in the heat dissipation channel 103 and can directly dissipate heat. In some embodiments, the thickness of the second isolation plate 107 can range from 0.5 mm to 1 mm, and it only needs to be ensured to be flat and not interfere with the screen 201 due to unevenness in some areas after assembly.

[0047] exist Figure 2 and Figure 3In the illustrated embodiment, the second isolation plate 107 may be a metal plate. For example, stainless steel. Stainless steel has high hardness and low cost. The insulating foam is pasted on the metal plate. In the thickness direction of the screen 201, the circuit board abuts against the insulating foam to form a heat dissipation channel 103. The metal plate provides a fixing platform for the insulating foam. For the insulating foam, if there is no metal plate, the circuit board is directly compressed on the back of the screen 201, which may generate pressure on the back of the screen 201, which may easily cause water ripples and other phenomena that affect the display of the screen 201. Excessive pressure may even cause damage to the screen 201. The problem can be avoided by providing a metal plate.

[0048] The metal plate can be opened at will, and the heat source 202 of the screen 201 that needs to be focused on heat dissipation is exposed to the heat dissipation channel 103, while covering the rest of the parts, so as to facilitate the concentrated cold to dissipate the heat source 202. The metal plate is closely attached to the back of the screen 201, and can play a certain role in equalizing the temperature of the entire screen 201 from the back of the screen 201, that is, the heat source on the back of the screen 201 corresponding to the area covered by the metal plate can transfer part of the heat to the lower temperature through the metal plate, thereby reducing its temperature, and the surface temperature of the entire screen 201 is more uniform, which not only improves the reliability of the screen 201, but also improves the feel of the touch screen and enhances the user experience. If the metal plate is not provided, the back of the screen 201 will be directly exposed to the heat dissipation cavity 106, and the circuit board in the heat dissipation cavity 106 is the main heat source of the screen display device 100. In view of the compact internal structure and narrow gap of the screen display device 100, the circuit board is likely to transfer heat directly to the screen 201, resulting in a further increase in the temperature of the screen 201. By setting up a metal plate, a layer of thermal resistance can be added, which can play a certain role in heat insulation.

[0049] exist Figure 2 and Figure 5 In the embodiment shown, insulating foam is laid between the metal plate and the internal circuit board, and the insulating foam must be of sufficient thickness so that it can be compressed and fully fill the gap between the circuit board and the metal plate after the circuit board is assembled, thereby blocking the airflow. In this embodiment, insulating foam is provided on both sides of the heat dissipation channel 103, thereby outlining a complete heat dissipation channel 103 between the circuit board and the metal plate, with both ends aligned with the air inlet 101 and the air outlet 102, and with no air leakage at the boundary.

[0050] The heat dissipation channel 103 is formed by using insulating foam between the circuit board and the metal plate. On the one hand, it is convenient to constrain and concentrate the airflow to ensure that it flows along the designed heat dissipation channel 103, so as to provide the heat source 202 with sufficient air volume and achieve the expected cooling effect. On the other hand, the insulating foam can meet the use requirements, because it has high elasticity and insulation at the same time, and can fit well with the uneven surface of the circuit board, ensuring the air tightness of the flow channel while avoiding short circuit between the circuit board and the metal plate. It is low-cost, and the shape and size can be arbitrarily designed. It is suitable for airflow blocking / guiding in various narrow spaces. It is a cost-effective material choice for forming the heat dissipation channel 103 on the back of the screen 201. The number, size, and position setting of the insulating foam depend on the position and size of the predetermined air inlet 101 and air outlet 102 of the screen display device 100. It is not limited in this application.

[0051] In some embodiments, the area of ​​the circuit board is smaller than the area of ​​the metal plate. To ensure that the heat dissipation channel 103 can be connected to the air inlet 101 and the air outlet 102, the screen display device 100 also includes an outlet air deflector 109 and / or an inlet air deflector (not shown) assembled on the back of the screen 201. By providing the outlet air deflector 109 and / or the inlet air deflector, it is helpful to guide the airflow in the heat dissipation channel 103 to bring out the heat. In some other embodiments, if the area of ​​the circuit board is large enough, it is not necessary to provide the outlet air deflector 109 and the inlet air deflector, and a heat dissipation channel 103 connected to the air inlet 101 and the air outlet 102 can be formed. The specific arrangement is based on actual needs and component layout, and is not limited in this application.

[0052] In some embodiments, a first guide channel 110 (eg, Figure 6 or Figure 7 One end of the first guide channel 110 is connected to the heat dissipation channel 103, and the other end is connected to the air outlet 102. Figure 6 and Figure 7 In the illustrated embodiment, the air outlet guide cover 109 is assembled on the metal plate to form the first guide channel 110. This fixing method is simple, efficient and reliable. Since the area of ​​the circuit board is smaller than the area of ​​the metal plate, the air outlet guide cover 109 can also be regarded as an extension of the heat dissipation channel 103. The air outlet guide cover 109 is one of the implementation methods of the guide structure, but is not limited to this.

[0053] exist Figure 2 and Figure 6In the embodiment shown, the air outlet guide 109 and the first isolation plate 105 are arranged side by side in the first direction X. Such an arrangement is conducive to connecting the heat dissipation channel 103 and the air outlet 102. One end of the air outlet guide 109 is connected to the first isolation plate 105, and the other end of the air outlet guide 109 is connected to the air outlet 102. Since the screen display device 100 pursues a thin thickness, the internal structure is often relatively compact, and the back of the screen 201 is relatively close to the circuit board. If a conventional solution is adopted, the air on the back of the screen 201 is difficult to flow due to the small space, and most of the air flow passes between the circuit board and the housing 10, resulting in a waste of air volume. In the present application, through the centralized guidance of the air by the reasonably designed air outlet guide 109, the air that is not easy to flow in the small space between the circuit board and the back of the screen 201 is fully circulated, and flows rapidly toward the air outlet 102 along the heat dissipation channel 103 on the back of the screen 201. Furthermore, the heat source 202 of the screen 201 is directly cooled by the airflow through the opening 108 of the metal plate on the back of the screen 201, thereby improving the cooling effect.

[0054] exist Figure 2 and Figure 3 In the illustrated embodiment, the air outlet deflector 109 is a conical deflector. The air outlet deflector 109 includes a first support plate 1091, a second support plate 1092 and a deflector 1093 assembled on the back of the screen 201. The first support plate 1091 and the second support plate 1092 are arranged at intervals. The deflector 1093, the first support plate 1091, the second support plate 1092 and the screen 201 are enclosed to form a first guide channel 110, and the distance between the first support plate 1091 and the second support plate 1092 gradually decreases along the direction from the air inlet 101 to the air outlet 102. The direction from the air inlet 101 to the air outlet 102 is the first direction X. In this way, one end of the air outlet guide cover 109 is adapted to the channel outlet of the heat dissipation channel 103 formed by the first isolation plate 105, the first isolation bar 1041, and the second isolation bar 1042, and the other end of the air outlet guide cover 109 is adapted to the air outlet 102.

[0055] In some embodiments, the flow area of ​​the air outlet guide cover 109 gradually decreases in the first direction X. The flow area of ​​the first guide channel 110 connected to the air outlet 102 is smaller than the flow area of ​​the air outlet 102. This arrangement can speed up the flow rate of the airflow in the first guide channel 110. In addition, the flow area of ​​the end of the air outlet guide cover 109 connected to the air outlet 102 is smaller than the flow area of ​​the air outlet 102, which can ensure that the heat in the heat dissipation channel 103 and the heat dissipation cavity 106 can be discharged from the air outlet 102.

[0056] In some embodiments, the first support plate 1091 abuts against the first isolation bar 1041, and the second support plate 1092 abuts against the second isolation bar 1042. The guide plate 1093 abuts against the first isolation plate 105. In some embodiments, at one end of the first guide channel 110 connected to the heat dissipation channel 103, the distance between the first support plate 1091 and the second support plate 1092 is equal to the distance between the first isolation bar 1041 and the second isolation bar 1042. In this way, the width of the joint between the first support plate 1091 and the first isolation bar 1041 and the joint between the second support plate 1092 and the second isolation bar 1042 is consistent, which prevents the airflow from flowing to the outside and ensures that the airflow in the heat dissipation channel 103 flows out of the first guide channel 110 as much as possible. In some embodiments, the gap between the end of the guide plate 1093 close to the first isolation plate 105 and the screen 201 is the same as the gap between the first isolation plate 105 and the screen 201. With such arrangement, the heights of the joints between the first isolation plate 105 and the guide plate 1093 are consistent, which prevents the airflow from flowing to the outside and ensures that the airflow in the heat dissipation channel 103 flows out from the first guide channel 110 as much as possible.

[0057] In some embodiments, the gap between the air outlet deflector 109 and the first isolation plate 105 does not exceed 1 mm. This arrangement ensures that the heat dissipation channel 103 and the first guide channel 110 are sealed and connected, and the sealing is stronger. In some embodiments, insulating foam can also be arranged between the air outlet deflector 109 and the first isolation plate 105 to play a sealing role. In some embodiments, the size of the end of the air outlet deflector 109 connected to the first isolation plate 105 and the back of the screen 201 in the thickness direction Z of the screen 201 is the same as the size of the first isolation plate 105 and the back of the screen 201 in the thickness direction Z of the screen 201. In this arrangement, the flow outlet of the heat dissipation channel 103 is adapted to the deflector inlet of the air outlet deflector 109, ensuring that the air outlet deflector 109 and the heat dissipation channel 103 form a sealed cavity, which can avoid air leakage on the one hand, and isolate the heat source 202 and the circuit board on the other hand, ensuring that the heat generated by the heat source 202 can be discharged from the formed heat dissipation channel 103, and the heat generated by the circuit board can be discharged from the heat dissipation cavity 106. Figure 6 In the embodiment shown, in the first direction X, the size of the air outlet guide cover 109 in the thickness direction Y of the screen 201 is getting larger and larger. This arrangement is to ensure the flow rate in the heat dissipation channel 103. It can be designed according to actual needs and is not limited in this application.

[0058] At the junction of the air outlet shroud 109 and the air outlet 102, by adjusting the size of the shroud outlet of the air outlet shroud 109 (or the overlapping area with the air outlet 102), the ratio of the air flow flowing through the heat dissipation channel 103 and the heat dissipation cavity 106 can be directly adjusted. For the screen display device 100, it is not only the screen 201 that needs to be cooled, but also the circuit board, etc. Therefore, the screen display device 100 is to meet the heat dissipation requirements of heat sources in various places. It should not be too much or too little. Too much is likely to cause excessive redundant air volume and cause waste, and too little cannot achieve the heat dissipation effect. This involves the total system air volume of the screen display device 100, and the ideal and relatively accurate air volume distribution is performed for each heat dissipation channel 103 and heat dissipation cavity 106. The air outlet shroud 109 in this application can meet this requirement, and the implementation method is more efficient and intuitive, which brings great convenience to the distribution of air volume.

[0059] In some embodiments, the screen display device 100 further includes a fan 111, which is disposed at the air outlet 102 and partially communicated with the heat dissipation channel 103. The fan 111 is used to guide the airflow in the heat dissipation channel 103 to be discharged from the air outlet 102. The fan 111 is provided at the air outlet 102 to speed up the circulation speed with the air inlet 101, which is conducive to discharging the heat in the heat dissipation channel 103. In some other embodiments, the fan 111 can also be provided at the air inlet 101 to guide the airflow outside the housing 10 into the heat dissipation channel 103 to take away the heat of the heat source 202 and discharge it from the air outlet 102.

[0060] In some embodiments, the flow area of ​​the heat dissipation channel 103 gradually decreases along the first direction X. Such a configuration can speed up the flow speed in the heat dissipation channel 103, thereby improving the heat dissipation effect of the heat source 202. In some embodiments, the two insulating foams gradually narrow along the first direction X, or the end of the outlet air guide cover 109 relatively close to the heat source 202 is narrower than the end relatively close to the fan 111, so that the flow area of ​​the heat dissipation channel 103 gradually decreases along the first direction X, so that the wind speed in the heat dissipation channel 103 is greater than the wind speed given by the fan 111, thereby increasing the flow speed of the airflow in the heat dissipation channel 103, thereby improving the heat dissipation effect.

[0061] Compared with the related art, the fan 111 of the present application is arranged at the air outlet 102, one part of which guides the airflow in the heat dissipation channel 103, and the other part guides the airflow in the heat dissipation cavity 106. One fan 111 can guide the airflow in different heat dissipation channels 103 and the heat dissipation cavity 106, and can dissipate heat for the heat source 202 and the circuit board at the same time, with high utilization rate. And the number and cost of fans 111 are reduced, which is convenient for maintenance. Correspondingly, the noise of the screen display device 100 is reduced. The number of fans 111 is small, and the appearance is beautiful.

[0062] In this embodiment, the metal plate, the circuit board and the insulating foam together form a heat dissipation channel 103 located between the circuit board and the metal plate. The heat dissipation channel 103, together with the air outlet guide cover 109, the air inlet 101 and the air outlet 102, together form a continuous and complete airflow channel. When the fan 111 is started, the airflow enters the housing 10 from the air inlet 101, and a part of it enters between the circuit board and the metal plate, flows along the heat dissipation channel 103 framed by the insulating foam, passes through the exposed back area of ​​the screen 201 to take away the heat (mainly taking away the heat from the heat source 202 area), reaches the edge of the other end of the circuit board, and enters the air outlet guide cover 109, and then is discharged from the air outlet 102 to the external environment, completing the heat dissipation process.

[0063] By forming a heat dissipation channel 103 on the back of the screen 201, the fan 111 drives the air to be diverted through the air outlet guide cover 109, and the utilization rate of the air volume of the fan 111 is greatly improved. Compared with the conventional active heat dissipation solution, a smaller size, lower speed, fewer fans 111 and a freer position distribution of the fans 111 can be used. The air outlet guide cover 109 and the fan 111 are both located outside the circuit board. The arrangement along the first direction X does not overlap in structure, and does not impose an additional burden on the thickness of the screen display device 100, so that the screen display device 100 can be made thin and light.

[0064] Under the guidance of the air outlet deflector 109, the air that is not easy to flow in the narrow space on the side of the circuit board facing the screen 201 is fully mobilized, and under the action of the fan 111, it begins to flow along the back of the screen 201 into the heat dissipation channel 103 formed by insulating foam, circuit boards, and metal plates, and flows toward the air outlet 102 in large quantities, so that the heat source 202 of the screen 201 can be directly cooled by the airflow, thereby maximizing the air volume utilization of the fan 111.

[0065] In some embodiments, the housing 10 includes a frame 112 for assembling the screen 201 and a rear shell 113 connected to the frame 112. The air inlet 101 and the air outlet 102 can be arranged on the frame 112 or the rear shell 113, which is not limited in the present application. In some embodiments, the frame 112 includes a first frame 114 and a second frame 115 extending along the second direction Y and arranged opposite to each other. The air inlet 101 is arranged on the first frame 114, and the air outlet 102 is arranged on the second frame 115. Such an arrangement ensures that the air inlet 101 and the air outlet 102 are arranged opposite to each other, which is beneficial to the circulation of airflow and thus beneficial to cooling. Figure 7In the illustrated embodiment, the air inlet 101 and the air outlet 102 are staggered in the second direction Y. In some embodiments, the air outlet 102 is located above the air inlet 101 in the second direction Y. Since the heat source 202 generates a hot air flow, according to the rising characteristics of the hot air flow, the air outlet 102 is arranged above the air inlet 101, which is conducive to the discharge of the hot air flow, thereby accelerating the cooling.

[0066] exist Figure 2 and Figure 7 In the embodiment shown, when the screen display device 100 has side air inlet and outlet, the thickness of the screen display device 100 is often restricted by the size of the fan 111. For example, the length and width of an axial fan or the thickness of a centrifugal fan. In this embodiment, the size of the fan 111 is allowed to be reduced while achieving the same heat dissipation effect, which is directly conducive to the thinness of the screen display device 100.

[0067] In some other embodiments, when the screen display device 100 has air inlet and outlet from the back, the fan 111 and the corresponding air outlet 102 are often located in the upper part of the rear shell 113 of the screen display device 100 or in the area near the top (in line with the characteristics of rising hot air flow). The flat-designed air outlet guide cover 109 can guide and concentrate the hot air flow without affecting the thickness, thereby improving the heat dissipation efficiency. Compared with the related art, the number of fans 111 can be reduced, the speed of fans 111 can be reduced, thereby reducing noise and cost, simplifying the difficulty of production and assembly, improving production and assembly efficiency, maintainability and sustainability, and extending the service life of the entire screen display device 100, thereby improving the market competitiveness of the screen display device 100.

[0068] In some embodiments, the air inlet 101 includes a plurality of through holes that are centrally distributed, so that the distribution of internal components can be concealed and the exterior is beautiful.

[0069] In some embodiments, the screen display device 100 also includes an air inlet deflector (not shown), which is assembled on the back of the screen 201, and a second guide channel (not shown) is left between the back of the screen 201. The air inlet deflector and the first isolation plate 105 are arranged side by side in the first direction X. One end of the air inlet deflector is connected to the air inlet 101, and the other end of the air inlet deflector is connected to the heat dissipation channel 103. The air inlet deflector is similar to the air outlet deflector 109 and plays a guiding role. The arrangement of the air inlet deflector and the air outlet deflector 109 can be arranged according to the layout of the circuit board and other components of the screen display device 100 to ensure that the entire screen display device 100 is as light and thin as possible.

[0070] Figures 1 to 7The embodiment shown is the arrangement form of the heat dissipation channel 103 in one embodiment of the screen display device 100. The solution is expandable and can be applied to various air inlets 101 and air outlets 102 in different directions, arrangements of heat dissipation channels 103 with different flow directions and numbers, fans 111 with different numbers, sizes, and types, distribution of heat sources 202 of different screens 201, different thicknesses and device gaps of the screen display device 100, different air volume ratios on the front and back of the circuit board, etc. In the actual product design process, only corresponding adjustments need to be made according to the structure to apply the present application.

[0071] In some embodiments, the air inlet 101 and the air outlet 102 of the screen display device 100 can be set in different directions. The air inlet 101 and the air outlet 102 can be located around the frame 112 of the shell 10, or distributed on one side of the back shell 113 (commonly seen in large-size conference display screens, spliced ​​screens, etc.), or both. If necessary, the structure of the air outlet guide cover 109 in the above scheme can be adjusted at any air inlet 101 or air outlet 102, and connected with the heat dissipation channel 103 of the circuit board and the fan 111, which can also achieve the effect of centralized airflow guidance.

[0072] In some embodiments, the screen display device 100 has heat dissipation channels 103 with different directions and quantities. The heat dissipation channels 103 can be Figure 2 or Figure 3 The heat dissipation channel 103 may be a relatively curved heat dissipation channel 103, or it may be a straight heat dissipation channel 103. The specific flow direction is to pass through the air inlet 101, the heat source 202 of the screen 201, and the air outlet 102 in sequence. If necessary, an outlet air deflector 109 and an inlet air deflector may also be provided. However, no matter what form the heat dissipation channel 103 is in, it only needs to be outlined and formed with insulating foam and a circuit board. In some embodiments, the screen display device 100 may also be provided with at least one heat dissipation channel 103, which is spatially divided by insulating foam and a circuit board to separate it into a heat dissipation channel 103 and a heat dissipation cavity 106. In addition, combined with the reasonable setting and allocation of the air inlet 101 and the air outlet 102, a plurality of independent airflow channels may be formed on the back of the screen 201 to dissipate heat to multiple heat dissipation target areas of the screen display device 100, thereby improving the heat dissipation effect of the entire screen display device 100.

[0073] In some embodiments, the screen display device 100 has fans 111 of different numbers, sizes, and types. Figure 2 and Figure 3 1 shows a common axial flow fan arranged at the air outlet 102. From the perspective of actual product design, one or more fans 111 of different sizes may be arranged at any air inlet 101 or air outlet 102, or a centrifugal fan may be used according to the air flow direction.

[0074] In some embodiments, the screen display device 100 has different screen 201 types and heat source 202 distributions. Different screens 201 have different power consumptions and different heat source 202 distribution characteristics. The metal plate can be provided with openings 108 in any heat source 202 area to directly expose the heat source 202 to the heat dissipation channel 103, so that the heat can be taken away by the airflow in the most direct way.

[0075] In some embodiments, the screen display device 100 has different product thicknesses and device gaps. In order to achieve thinness and lightness, the compressed thickness is a design requirement for this type of product, and the insulating foam, with its high elasticity and insulation, can adapt to various narrow spaces, enclose the frame of the required heat dissipation channel 103 between the circuit board and the metal plate, and ensure sufficient airtightness.

[0076] In some embodiments, the screen display device 100 uses a circuit board to separate the cavity of the entire housing 10 into a heat dissipation channel 103 and a heat dissipation cavity 106, so as to achieve different air volume ratios using the circuit board. Figure 2 and Figure 3 In the illustrated embodiment, one end of the air outlet shroud 109 is connected to the fan 111, and its width is the same as that of the fan 111, but its height may be different from that of the fan 111. Under this structure, a part of the airflow flows between the circuit board and the metal plate along the heat dissipation channel 103 formed, and another part of the airflow flows from the heat dissipation cavity 106 separated by the circuit board. In this way, it is only necessary to adjust the overlap ratio between the shroud outlet of the air outlet shroud 109 and the fan 111 to achieve any airflow ratio on different sides of the circuit board, thereby achieving the air volume ratio of the heat dissipation channel 103 and the heat dissipation cavity 106. With such a configuration, the screen 201 and the devices on both sides of the circuit board can be cooled simultaneously and directly, and dual-purpose can be achieved, thereby improving the heat dissipation effect of the entire screen display device 100.

[0077] It should be noted that Figure 4 and Figure 5 The perspective view is shown to clearly describe the heat dissipation channel 103, the heat dissipation cavity 106 and the first guide channel 110 in the housing 10. The housing 10 also includes other components, which are not shown and will not be described in detail.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A screen display device, characterized in that: include: A housing, a screen assembled on the housing, and a heat source arranged on the back of the screen; the housing and the screen enclose a receiving cavity; the housing is provided with an air inlet and an air outlet, a heat dissipation channel connected with the air inlet and the air outlet is formed in the receiving cavity, and the heat source is arranged in the heat dissipation channel; The screen display device further comprises a first isolation bar, a second isolation bar and a first isolation plate assembled on the back of the screen, the first isolation bar and the second isolation bar are respectively located on opposite sides of the heat source, the first isolation plate covers the first isolation bar and the second isolation bar, and together with the first isolation bar and the second isolation bar, forms the heat dissipation channel; the screen display device further comprises a circuit board; the first isolation plate is the circuit board; the first isolation bar and the second isolation bar are both made of insulating material and are flexible isolation bars; The screen display device further includes a second isolation plate, which covers the back of the screen and is provided with an opening, wherein the opening faces the heat source, the second isolation plate is assembled to the housing, the first isolation bar and the second isolation bar are fixedly connected to the second isolation plate; the second isolation plate, the first isolation bar, the second isolation bar and the first isolation plate are enclosed to form the heat dissipation channel; A heat dissipation cavity is also formed in the receiving cavity, and the heat dissipation cavity connects the air inlet and the air outlet. One side of the first isolation plate is the heat dissipation channel, and the other side of the first isolation plate is the heat dissipation cavity. There are insulating foams on both sides of the heat dissipation channel. The heat dissipation channel is a channel with no air leakage at the boundary. Both ends of the heat dissipation channel are aligned with the air inlet and the air outlet. The air inlet and the air outlet are staggered in the second direction, and the air outlet is located above the air inlet.

2. The screen display device according to claim 1, characterized in that: The screen display device also includes an air outlet guide cover assembled on the back of the screen, and a first guide channel is left between the air outlet guide cover and the screen; one end of the first guide channel is connected to the heat dissipation channel, and the other end is connected to the air outlet.

3. The screen display device according to claim 2, characterized in that: The air outlet deflector includes a first support plate, a second support plate and a deflector plate assembled on the back of the screen, the first support plate and the second support plate are spaced apart, the deflector plate and the first support plate, the second support plate and the screen are enclosed to form a first deflection channel, and the distance between the first support plate and the second support plate gradually decreases along the direction from the air inlet to the air outlet.

4. The screen display device according to claim 3, characterized in that: The air outlet guide cover meets any one or more of the following conditions: The first support plate abuts against the first isolation strip, the second support plate abuts against the second isolation strip; the guide plate abuts against the first isolation plate; The flow area of ​​the first guide channel communicating with the air outlet is smaller than the flow area of ​​the air outlet; The gap between the air outlet guide cover and the first isolation plate does not exceed 1 mm.

5. The screen display device according to claim 1, characterized in that: The screen display device also includes an air inlet guide cover, which is assembled on the back of the screen and has a second guide channel between the screen; one end of the second guide channel is connected to the air inlet, and the other end is connected to the heat dissipation channel.

6. The screen display device according to claim 1, characterized in that: The screen display device also includes a fan, which is arranged at the air outlet and is partially connected to the heat dissipation channel; the fan is used to guide the airflow in the heat dissipation channel to be discharged from the air outlet.

7. The screen display device according to claim 1, characterized in that: The shell includes a frame for assembling the screen and a rear shell connected to the frame; the air inlet and the air outlet are arranged on the frame or the rear shell.

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