Overall structure

Abstract

The application provides a whole machine structure, which comprises a display module and a whole machine outer frame. The display module comprises a display panel and a front frame. The front frame comprises a front frame side edge located outside a side edge of the display panel. The whole machine outer frame comprises at least one outer frame side edge. Each outer frame side edge is located opposite to a side of the front frame side edge away from the display panel and is arranged in contact with the front frame side edge. The total contact area of all the outer frame side edges and the respective corresponding front frame side edges satisfies the relationship. The total contact area can be controlled to reduce the heat transferred from the display module to the whole machine outer frame, so as to avoid the temperature of the whole machine outer frame being too high, thereby improving the service life of the whole machine outer frame and the use experience. In addition, the outer frame side edge has sufficient strength, so as to improve the strength of the whole machine outer frame and the structural stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of display technology, in particular, to a whole machine structure. BACKGROUND

[0002] In the current whole machine structure, the display module generates a large amount of heat and transmits to the whole machine outer frame. For example, for a broadcast monitor, the temperature of the whole machine outer frame is higher than 50℃ when it is lit for many hours under room temperature, which brings a bad experience to the user. SUMMARY

[0003] The present application aims to solve at least one of the technical problems in the prior art, and proposes a whole machine structure which can not only avoid the temperature of the whole machine outer frame being too high, but also ensure that the side of the outer frame has sufficient strength, thereby improving the service life of the whole machine outer frame and the user experience.

[0004] To achieve the above-mentioned purpose, the present application provides a whole machine structure, which comprises a display module and a whole machine outer frame, wherein the display module comprises a display panel and a front frame, the front frame comprises a front frame side located outside the side of the display panel; the whole machine outer frame comprises at least one outer frame side, each outer frame side is located on the side of the front frame side away from the display panel, and is in contact with the front frame side, and the total contact area of all the outer frame sides and the respective corresponding front frame sides satisfies the following relationship:

[0005]

[0006] Wherein, S is the total contact area; L is the maximum width of the outer frame side at the contact position with the front frame side in the direction perpendicular to the contact surface of the outer frame side and the front frame side; P is the power of the display module; the power is the sum of the power of the display panel and the power of the backlight module of the display module; K is the thermal conductivity coefficient of the outer frame side; T1 is the temperature of the display module under the condition that the ambient temperature is 20℃; the temperature of the display module is defined as the actual temperature of the display module at the printed circuit board thereof when the display module of the whole machine structure presents a static picture and reaches a temperature stable state under a preset ambient temperature; T2 is the maximum allowable temperature of the surface of the outer frame side away from the display module under the condition that the ambient temperature is 20℃.

[0007] The maximum allowable temperature T2 of the surface of the outer frame side away from the display module is less than or equal to 50℃.

[0008] Optionally, the total contact area of all the outer frame sides and the respective corresponding front frame sides satisfies the following relationship:

[0009]

[0010] wherein, wherein, r is in the range of [0.5, 1).

[0011] Optionally, r = 0.8.

[0012] Optionally, the maximum allowable temperature T2 of the side edge of the outer frame is 38℃.

[0013] Optionally, the power of the display module is greater than or equal to 190W.

[0014] Optionally, the side edge of the outer frame and the side edge of the front frame are spaced apart from each other, and the side edge of the outer frame has a contact structure, a surface of the contact structure in contact with the side edge of the front frame being the contact surface; the contact surface is a plurality of, and the plurality of contact surfaces are uniformly distributed on the inner surface of the side edge of the outer frame opposite to the side edge of the front frame, or,

[0015] the contact surface is one, and the contact surface is in line contact with the side edge of the front frame.

[0016] Optionally, the shapes of the plurality of contact surfaces are the same, and the areas of the plurality of contact surfaces are equal.

[0017] Optionally, the contact structure includes a plurality of contact portions, each of the contact portions having one of the contact surfaces; at least part of the contact portions has a mounting hole penetrating through the contact portion in a direction perpendicular to the contact surface; the whole machine structure further includes screws, the number of the screws being the same as the number of the mounting holes, and each of the screws passes through each of the mounting holes one by one and is connected with the side edge of the front frame.

[0018] Optionally, a comb-shaped protruding structure is arranged on the inner surface of the side edge of the outer frame and between each two adjacent contact portions, and the protruding structure is spaced apart from the side edge of the front frame.

[0019] Optionally, the whole machine structure further includes a rear shell, the rear shell including a rear plate on a side away from the light emitting surface of the display module, and a rear shell side edge connected with the whole machine outer frame, the rear shell side edge and the rear plate constituting a heat dissipation space outside the back plate of the display module, and a heat dissipation device is arranged in the heat dissipation space to lead away heat generated by the display module; the rear shell includes an air inlet and an air outlet.

[0020] Optionally, at least one air outlet is arranged on the rear shell side edge close to the sky side of the rear plate, and a first air inlet is arranged on the rear shell side edge close to the ground side of the rear plate.

[0021] The heat dissipation device includes an air outlet fan arranged at a position close to the air outlet for sending air to the air outlet.

[0022] Optionally, a second air inlet is arranged on the rear shell side of the ground side and located close to the first air inlet.

[0023] Optionally, the volume of air discharged per minute by all the air outlet fans is defined as a total CMM value; the total CMM value is greater than or equal to the ratio of a target CMM value to the opening rate of the air outlet.

[0024] The target CMM value CMM 目标 satisfies the following relationship:

[0025]

[0026] Wherein, ΔT is the difference between the temperature of the display module and 38℃ when the ambient temperature is 38℃; M is the unit air mass of standard state air; C p is the specific heat of standard state air at constant pressure; Q is the heat generated by the whole machine structure in one minute;

[0027] The temperature of the display module is in the range of 40℃ to 60℃.

[0028] Optionally, when the ambient temperature is 38℃, the temperature of the display module is greater than or equal to 45℃, and / or,

[0029] The temperature of the display module is less than or equal to 48℃.

[0030] Optionally, the heat dissipation device further comprises a baffle, the air outlet fan is opposite to one of the air outlets; the baffle is arranged between the air outlet fan and the air outlet opposite to the air outlet fan to form an exhaust passage therebetween.

[0031] Optionally, the whole machine structure further comprises a fin assembly located on one side of the back plate of the display module.

[0032] Optionally, the whole machine structure further comprises a semiconductor heat conduction module, wherein the semiconductor heat conduction module is installed between the back plate of the display module and the fin assembly; the semiconductor heat conduction module is connected with the fin assembly to conduct the heat generated by the display module to the fin assembly.

[0033] The present application has the following beneficial effects:

[0034] The whole machine structure provided by the embodiment of the present application comprises a display module and a whole machine outer frame, the whole machine outer frame comprises at least one outer frame side, each outer frame side is located on the side of the front frame side of the display module away from the display panel and is arranged in contact with the front frame side, and the total contact area of all the outer frame sides and the respective corresponding front frame sides satisfies the following relationship: By making the total contact area satisfy the relationship, the heat transferred to the whole machine frame of the display module can be reduced, so as to avoid the temperature of the whole machine frame being too high, thereby improving the service life of the whole machine frame and use experience, and ensuring that the side edge of the frame has sufficient strength, so as to improve the strength of the whole machine frame, thereby improving the structural stability. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 An external structure diagram of the whole machine structure provided by the embodiment of the present application is provided.

[0036] Figure 2 An exploded structure diagram of the whole machine structure provided by the embodiment of the present application is provided.

[0037] Figure 3A An internal surface front view of the whole machine frame used by the embodiment of the present application is provided.

[0038] Figure 3B An enlarged view of the I area in the middle is provided. Figure 3A

[0039] A partial sectional view of the whole machine structure provided by the embodiment of the present application at the contact structure is provided. Figure 4

[0040] A partial sectional view of the whole machine structure provided by the embodiment of the present application at the comb-shaped protruding structure is provided. Figure 5

[0041] A schematic diagram of the structure and principle of the heat dissipation device used by the embodiment of the present application is provided. Figure 6

[0042] A structure diagram of the rear shell used by the embodiment of the present application is provided. Figure 7A

[0043] A structure schematic diagram of the baffle used by the embodiment of the present application is provided. Figure 7B

[0044] A plan view of the air outlet used by the embodiment of the present application is provided. Figure 7C

[0045] A structure diagram of the heat dissipation hole used by the embodiment of the present application is provided. Figure 8

[0046] A structure schematic diagram of the semiconductor heat conduction module and the heat dissipation fin assembly used by the embodiment of the present application is provided. Figure 9

[0047] A structure schematic diagram of the heat dissipation fin assembly assembled on the display module used by the embodiment of the present application is provided. Figure 10 DETAILED DESCRIPTION

[0048] ​In order for those skilled in the art to better understand the technical solutions of the present application, the whole machine structure provided by the present application is described in detail below in combination with the drawings.

[0049] For the convenience of description, when the whole machine structure provided by the present application is placed on a horizontal plane in a specified manner, the side of the whole machine structure facing upwards is referred to as the top side, the side facing downwards is referred to as the bottom side, and the two sides in the upward direction parallel to the horizontal plane are respectively referred to as the left side and the right side. The above-mentioned specified manner is usually the conventional placement direction of the whole machine structure, for example, if the whole machine structure has a support, the above-mentioned specified manner is to place the support at the bottom of the whole machine structure when the whole machine structure is placed on the horizontal plane, so as to be able to support the whole machine structure. The specified manner can be understood as the placement manner in the normal use state of the whole machine structure.

[0050] The whole machine structure provided by the embodiment of the present application comprises a display module 1, which has a structure as shown in, for example, Figure 2 and Figure 5 The display module 1 comprises a display panel 14 and a backlight module 15 located on the side of the display panel 14 away from the light-out surface. The backlight module 15 is only schematically shown in Figure 5 , which comprises, for example, a light guide plate, a backlight source and corresponding functional film materials. Moreover, the display module 1 further comprises a front frame 11, a module middle frame 12 and a back plate 13, wherein the module middle frame 12 surrounds the side edges of the display panel 14 and the side edges of the backlight module 15, the module middle frame 12 has middle frame side edges 121; the front frame 11 has front frame side edges 111; the back plate 13 is located on the side of the backlight module 15 away from the display panel 14, the back plate 13 has back plate side edges 131, and the middle frame side edges 121 are located on the outside of the back plate side edges 131 (i.e. the side away from the backlight module 15), and the front frame side edges 111 are located on the outside of the middle frame side edges 121 (i.e. the side away from the back plate side edges 131).

[0051] As shown in, for example, Figure 1 and Figure 2 The whole machine structure provided by the embodiment of the present application further comprises a whole machine outer frame 2, which is arranged on the outside of the front frame 11 (i.e. the side away from the display panel 14). As shown in, for example, Figure 1 , Figure 4 and Figure 5 The whole machine outer frame 2 comprises outer frame side edges 21 and an outer frame front edge 22, wherein the outer frame side edges 21 are, for example, four and each in the form of a strip, and the four outer frame side edges 21 are correspondingly arranged on the outside of the four edges of the display module 1. Of course, the embodiment of the present application is not limited thereto, and in actual application, the outer frame side edges 21 can also be arranged as one, two or three according to specific needs.

[0052] The number of front edges 22 of the outer frame is the same as the number of side edges 21 of the outer frame, and they are arranged in a one-to-one correspondence. The front frame 11 and each front edge 22 of the outer frame are arranged sequentially along the light emission direction of the display panel 14, and each front edge 22 of the outer frame includes a surface 220 away from the display module. Each side edge 21 of the outer frame is located relatively outside the side edge 111 of the front frame (i.e., away from the display panel 14), and includes a surface 210 away from the display module. Specifically, each side edge 21 of the outer frame and each front edge 22 of the outer frame completely cover the front frame 11 and its corresponding side edge 111. Of course, the embodiments of the present invention are not limited to this. In practical applications, the front edge 22 of the outer frame may also partially cover the corresponding front frame 11, or the front edge 22 of the outer frame may be omitted. The embodiments of the present invention do not have any particular limitations in this regard.

[0053] Each outer frame side 21 is in contact with the front frame side 111, and the sum of the contact areas of all outer frame side 21 and their respective corresponding front frame side 111, that is, the product of the contact area of ​​each outer frame side 21 and its corresponding front frame side 111 and the number of outer frame side 21 (hereinafter referred to as the total contact area), is set to reduce the heat transferred from the display module to the entire outer frame, so as to control the temperature of the entire outer frame 2 below the preset maximum allowable temperature, while ensuring that the outer frame side 21 has sufficient strength to improve the strength of the entire outer frame 2. In other words, under the premise of ensuring that the printed circuit board (PCB) in the display module 1 meets the extreme working conditions, the temperature of the entire outer frame 2 can be controlled by controlling the thermal resistance between the display module 1 and the outer frame side 21, that is, by controlling the total contact area between the outer frame side 21 and the front frame side 111. This can prevent the temperature of the entire outer frame 2 from getting too high, thereby improving the lifespan of the entire outer frame 2 and improving the user experience, and also improve the strength of the entire outer frame 2, thereby improving the structural stability.

[0054] Specifically, the display module 1 can be considered as a heat source as a whole, and this heat source and the outer frame side 21 can be considered as two different media. The thermal resistance between the two can be expressed by the following formula:

[0055]

[0056] Where R is the thermal resistance between the heat source (i.e., display module 1) and the outer frame side 21; T1 is the temperature of display module 1 at an ambient temperature of 20℃, defined as the actual temperature of display module 1 detected on its printed circuit board (PCB) when the display module 1 of the entire device structure is lit up to display a static image and reaches a stable temperature state at a preset ambient temperature; T2 is the maximum allowable temperature of the surface 210 of the outer frame side 21 away from display module 1 at an ambient temperature of 20℃. T2 is less than or equal to 50℃. The maximum allowable temperature T2 of the surface 210 of the outer frame side 21 away from display module 1 is less than or equal to 50℃, which can be understood as the temperature at any point on the surface 210 of the outer frame side 21 away from display module 1 not exceeding 50℃. Within this temperature range, users will not feel the outer frame side 21 being too hot to touch, providing a better user experience.

[0057] In one specific embodiment, the plane on the side of the outer frame 21 away from the display module can be perpendicular to the plane on the light-emitting surface of the display panel 14.

[0058] Furthermore, when the outer frame 2 includes the front edge 22, the front edge 22 can have less or no contact with the display module 1. At this time, the maximum allowable temperature of the surface 220 of the side of the front edge 22 away from the display module can be less than or equal to 50°C. Within this temperature range, the user will not feel very hot when touching the front edge 21, and will have a better user experience.

[0059] In one specific implementation, the plane of the surface 220 on the side of the outer frame 22 away from the display module can be parallel to the plane of the light-emitting surface of the display panel 14.

[0060] The entire device structure illuminates, displays a static image, and reaches a stable temperature state. This can be understood as the state where, after being illuminated for a period of time at a preset ambient temperature, the temperature of each component does not change significantly. In specific testing, the static image can be an image where all pixels display the L255 state. In specific testing, the time during which the temperature of each component does not change significantly after illumination can be greater than or equal to 30 minutes.

[0061] It is understandable that T1 is greater than T2.

[0062] Since the outer frame side 21 is in contact with the front frame side 111, the heat between them is transferred by thermal conduction. Therefore, the thermal resistance between the outer frame side 21 and the display module 1 is a conductive thermal resistance, which can be expressed by the following formula:

[0063]

[0064] Among them, R 导The thermal resistance between the heat source (i.e., display module 1) and the outer frame side 21 is equal to the aforementioned thermal resistance R; L is the thermal resistance between the outer frame side 21 and the front frame side 111 at the contact position, in the direction perpendicular to the contact surface between the outer frame side 21 and the front frame side 111 (i.e., with). Figure 4 The maximum width L of the outer frame side 21 (parallel to the Y direction). The maximum width L of the outer frame side 21 can be set according to specific requirements. K is the thermal conductivity of the outer frame side 21. For example, the outer frame side 21 is made of aluminum-magnesium alloy, and its thermal conductivity is 160℃ / m. P is the power of the display module 1, which is, for example, the sum of the power of the display panel 14 and the power of the backlight module 15.

[0065] Specifically, considering the strength of the outer frame side 21, the maximum width L of the outer frame side 21 can be designed to be greater than or equal to 10mm. Preferably, in order to balance the strength of the outer frame side 21 and avoid excessive temperature rise of the outer frame side 21, the maximum width L of the outer frame side 21 can be designed to be between 11.5mm and 12.5mm.

[0066] For example, the power P of the display module is greater than or equal to 190W; for example, the power P of the display module is greater than or equal to 200W; for example, the power of the display module is greater than or equal to 210W; for example, the power of the display module is greater than or equal to 220W; for example, the power of the display module is greater than or equal to 230W; for example, the power of the display module is greater than or equal to 240W.

[0067] For example, the power of the display module is less than or equal to 250W; for example, the power of the display module is less than or equal to 300W; for example, the power of the display module is less than or equal to 350W; for example, the power of the display module is less than or equal to 400W.

[0068] Since R = R 导 It can be deduced that the total contact area between the outer frame side 21 and the front frame side 111 satisfies the following relationship:

[0069]

[0070] Where S is the total contact area mentioned above. By setting a suitable total contact area, the required thermal resistance can be obtained, thereby controlling the temperature of the outer frame 2 of the whole machine below the maximum allowable temperature value (i.e., the maximum allowable temperature T2 of the outer frame side 21).

[0071] Preferably, T2 can be less than or equal to 48°C; preferably, T2 can be less than or equal to 47°C; preferably, T2 can be less than or equal to 45°C; preferably, T2 can be less than or equal to 42°C; preferably, T2 can be less than or equal to 40°C.

[0072] More preferably, T2 can be less than or equal to 38°C. For example, setting T2 to 38°C allows users to feel a gentle and comfortable temperature when touching the side of the outer frame, resulting in a better user experience.

[0073] Furthermore, when the outer frame 2 includes the front edge 22, the front edge 22 can have less or no contact with the display module 1. At this time, the maximum allowable temperature of the surface 220 of the front edge 22 away from the display module 1 can be less than or equal to 38°C. Within this temperature range, the temperature felt by the user when touching the front edge 21 is relatively mild and comfortable, resulting in a better user experience.

[0074] Furthermore, in order to improve both the strength of the outer frame 2 and the overall strength of the machine, the value of S can be set to the following range:

[0075]

[0076] The value of r ranges from [0.5, 1]. For example, r can be 0.5, thus ensuring a reasonable total contact area S and improving structural stability. Preferably, r can be any one of 0.6, 0.7, 0.8, 0.9, and 0.95. For example, when r is 0.8, the outer frame 2 can have higher impact resistance, improving the overall structural stability.

[0077] Taking a 31.5-inch display panel as an example, the maximum width L can be set to 12mm; the power of display module 1 is 200W; the actual temperature T1 of display module 1 is 50℃; the maximum allowable temperature T2 of the outer frame side 21 is 38℃; the outer frame side 21 is made of aluminum-magnesium alloy, and its thermal conductivity K is 160℃ / m. By substituting the above parameter values ​​into the above formula for the total contact area S, the total contact area S can be calculated to be 1250mm². 2 Based on the total contact area S, the structure of the outer frame side 21 can be designed accordingly.

[0078] In some optional embodiments, in order to ensure uniform contact between the outer frame side 21 and the front frame side 111, thereby improving heat dissipation uniformity and structural stability, the outer frame side 21 and the front frame side 111 are spaced apart, and the outer frame side 21 has a contact structure. The surface of this contact structure that contacts the front frame side 111 is the contact surface between the outer frame side 21 and the front frame side 111. That is, the outer frame side 21 and the front frame side 111 do not directly contact each other, but rather contact each other through this contact structure. Furthermore, there can be multiple contact surfaces, and these multiple contact surfaces are evenly distributed on the inner surface of at least one outer frame side 21 opposite to the front frame side 111. Preferably, when there are multiple outer frame side 21s, the multiple contact surfaces are evenly distributed on the inner surface of each of the multiple outer frame side 21 opposite to the front frame side 111, thereby ensuring uniform contact between the outer frame side 21 and the front frame side 111, improving heat dissipation uniformity and structural stability. In a preferred embodiment, the multiple contact surfaces have the same shape and equal area. This further improves the uniformity of contact between the outer frame side 21 and the front frame side 111.

[0079] It should be noted that the aforementioned multiple contact surfaces contact the front frame side 111 in a discrete, localized manner, and each contact surface has a small area to limit heat conduction efficiency. However, the embodiments of the present invention are not limited to this; the aforementioned contact surface can also be a single surface, and this surface makes linear contact with the front frame side 111, i.e., the shape of the contact surface is linear, such as a straight line, arc, wavy line, or irregular line. In this case, the aforementioned contact structure can, for example, adopt an integral thin-walled structure, which can also limit heat conduction efficiency while ensuring uniform heat dissipation. Of course, in practical applications, depending on the specific situation, such as when uniform heat dissipation is not required or when concentrated heat dissipation is needed for a localized area of ​​the display module, provided that the outer frame side has sufficient strength, the contact structure can also contact the front frame side within a specified localized area. As long as the total contact area between the contact structure and the front frame side is controlled, the temperature of the entire outer frame can be controlled below the preset maximum allowable temperature.

[0080] Taking a discrete, localized contact method for multiple contact surfaces as an example, in some optional embodiments, Figure 4 This is a partial cross-sectional view of the contact structure of the overall structure provided in an embodiment of the present invention. For example... Figure 4 As shown, the contact structure includes multiple contact portions 23, each contact portion 23 having one contact surface. Preferably, the multiple contact portions 23 are evenly distributed along the length direction of the outer frame side 21, which can achieve uniform heat dissipation. For example, as... Figure 3AAs described above, for each outer frame 2, four contact portions 23 are provided on its outer frame side 21, and the spacing between any two adjacent contact portions 23 is equal. Of course, in practical applications, the number and arrangement of contact portions 23 on different outer frame side 21 can also be different.

[0081] Based on the above contact structure, taking a 31.5-inch display panel as an example, the total contact area S calculated above is 1250 mm². 2 Based on this, there can be 14 contact portions 23 (the total number of contact portions 23 distributed on all the outer frame sides 21), and each contact portion 23 has a contact surface area of ​​89 mm². 2 In this way, the outer frame side 21 and the front frame side 111 are made into contact in a discrete, localized manner, while ensuring that the total contact area S does not exceed 1250 mm². 2 .

[0082] Furthermore, in some alternative embodiments, such as Figure 4 As shown, the outer contour surface of each contact portion 23 is a cylindrical surface, which is parallel to the... Figure 4 The cross-sectional shape of the XZ plane is circular. In this case, if the area of ​​the contact surface of each contact part 23 is 89 mm², 2 According to the formula for calculating the area of ​​a circle: πR² = 89 mm 2 The radius of the contact portion 23 can be calculated to be 5.3 mm. Therefore, the specific structure and dimensions of the contact portion 23 can be designed.

[0083] In some alternative embodiments, such as Figure 4 As shown, at least a portion of the contact portion 23 has a direction perpendicular to the contact surface of the contact portion 23 (i.e., with...). Figure 4 The mounting hole 231 (parallel to the Y direction) passes through the contact portion 23. Furthermore, the entire structure also includes screws (not shown in the figure), the number of which is the same as the number of mounting holes 231. Each screw passes through a corresponding mounting hole and then through a mounting hole 112 on the front frame side 111, before being threaded into a threaded hole 132 on the back plate side 131. Thus, by means of screws, the outer frame side 21, the front frame side 111, and the back plate side 131 can be fixed together, ensuring that the outer frame side 21 does not wobble. At the same time, by placing screws on the contact portion 23, the screws can be connected more securely, thereby further improving connection stability.

[0084] It should be noted that although the contact part 23 with the mounting hole 231 has an annular contact surface with the front frame side 111, rather than a circle, the screw in the mounting hole 231 will also contact the front frame side 111. Moreover, the size of the mounting hole 231 is relatively small. Therefore, the heat dissipation effect of the contact part 23 with the screw and the front frame side 111 is equivalent to the heat dissipation effect of the solid contact part 23 without the screw and the front frame side 111. Thus, when calculating the contact area between the contact part 23 and the front frame side 111, the contact surface between the contact part 23 and the front frame side 111 can be regarded as a circle.

[0085] In some alternative embodiments, Figure 5 This is a partial cross-sectional view of the overall structure provided in an embodiment of the present invention at the comb-shaped protrusion. (See attached image.) Figure 5 As shown, comb-shaped protrusions 25 are provided on the inner surface of the outer frame side 21 (i.e., the surface opposite to the front frame side 111) and between each pair of adjacent contact portions 23. These protrusions 25 are spaced apart from the front frame side 111, meaning they do not contact each other. The protrusions 25 are used to increase the strength of the overall outer frame 2. Specifically, as... Figure 3B As shown, the raised structure 25 is composed of multiple ribs arranged at intervals, each rib extending along the length of the outer frame side 21. Of course, the raised structure 25 can also adopt any other structure, as long as it can increase the strength of the entire outer frame 2.

[0086] For some complete machine structures that require long-term use, such as broadcast-grade monitors, the requirements for display color are high due to the need for extended use. However, prolonged use can lead to high monitor temperatures, and excessively high temperatures in the display module can cause color coordinate drift, resulting in poor color thermal stability of the entire structure. To address this issue, in some optional embodiments, such as... Figure 1 and Figure 2 As shown, the above-mentioned overall structure also includes a rear shell 3, which is connected to the outer frame 2 of the whole machine and forms a shell that can accommodate the display module 1.

[0087] Specifically, such as Figure 6 As shown in Figure 7, the rear shell 3 includes a rear plate 32 located on the side opposite to the light-emitting surface of the display module 1, and a rear shell side 31 connected to the outer frame 2 of the whole unit, wherein, as shown in Figure 7, the rear shell 3 includes a rear plate 32 located on the side opposite to the light-emitting surface of the display module 1, and a rear shell side 31 connected to the outer frame 2 of the whole unit. Figure 4 As shown, at least a portion of the rear shell side 31 is located relatively outside the outer frame side 21 (i.e., away from the space accommodating the display module 1), and as Figure 3AAs shown, a plurality of threaded holes 24 are provided on the outer frame side 21, and corresponding mounting holes (not shown in the figure) are provided on the rear shell side 31. The whole structure also includes screws, which pass through the mounting holes on the rear shell side 31 and are threadedly connected to the threaded holes 24 on the outer frame side 21, thereby fixing the rear shell side 31 and the outer frame side 21 together.

[0088] Furthermore, in order to reduce the temperature of display module 1, such as Figure 6 As shown, the rear shell side 31 and the rear plate 32 form a heat dissipation space on the outside of the back plate 13 of the display module 1 (i.e., the side away from the light-emitting surface). A heat dissipation device is installed in this heat dissipation space to dissipate the heat generated by the display module 1. With the help of this heat dissipation device, the display module 1 can achieve rapid heat dissipation. Experiments have shown that the heat transfer efficiency of heat dissipation from the rear shell 3 side using the heat dissipation device is high, which can effectively reduce the overall temperature of the display module 1, thereby avoiding color coordinate drift and improving the color thermal stability of the entire structure.

[0089] It should be explained that the surface 210 of the outer frame side 21 away from the display module 1 may not include any surfaces that are not exposed, because this part will not be touched by the user during normal use of the entire structure. That is, T2 can be considered as the maximum allowable temperature of the surface of the outer frame side 21 that can be touched by the user. For example, the surface 210 of the outer frame side 21 away from the display module 1 may not include the surface covered by the rear shell side 31.

[0090] The aforementioned heat dissipation device can have various structures. For example, it can combine a fan with air inlets and outlets on the rear shell 3 to dissipate heat from the display module 1. In some optional embodiments, at least one air outlet is provided on the rear shell side of the rear panel 32 near the top side, and a first air inlet is provided on the rear shell side of the rear panel 32 near the ground side. When the entire structure is placed on a horizontal plane in a specified manner, the outer surface of the rear shell side on the top side faces upward, and the outer surface of the rear shell side on the ground side faces downward; that is, the rear shell side on the top side is the upper side, and the rear shell side on the ground side is the lower side. The specified manner is usually the conventional placement orientation of the entire structure. For example, if the entire structure has a bracket, the specified manner is that when the entire structure is placed on a horizontal plane, the bracket is located at the bottom of the entire structure to support it.

[0091] This allows air from the external environment to enter the heat dissipation space through the first air inlet near the bottom, carrying the heat from the display module 1, and then be exhausted through the air outlet near the top, thus achieving air circulation. Since hot air rises, by placing the air outlet above the air inlet, the heat generated by the display module 1 can be expelled more quickly, thereby improving heat dissipation efficiency.

[0092] In one specific embodiment, such as Figure 6 As shown, a first air inlet 322 is provided on the rear plate 32 near the lower side 31b (i.e., the rear shell side on the ground side); an air outlet 321 is provided on the rear plate 32 near the upper side 31a (i.e., the rear shell side on the top side).

[0093] Based on this, to increase air intake efficiency, optionally, a second air intake 324 is provided on the lower side 31b (i.e., the rear shell side on the ground side) near the first air intake 322. This allows air from the external environment to enter the heat dissipation space simultaneously from both the first air intake 322 near the lower side and the second air intake 324 on the lower side 31b. Alternatively, as... Figure 6 As shown, the rear panel 32 has a stepped structure in some areas. Furthermore, when the entire structure is placed on a horizontal plane in a specified manner, the outer surface of the lower side 32a of the stepped structure faces downwards. Based on this, a third air inlet 323 can also be provided on the lower side 32a of the stepped structure. Air from the external environment enters the aforementioned heat dissipation space through the first air inlet 322, the second air inlet 324, and the third air inlet 323. The airflow direction from the external environment into the heat dissipation space is as follows: Figure 6 As shown by the thick arrow in the image.

[0094] Moreover, such as Figure 6 As shown, the aforementioned heat dissipation device includes at least one exhaust fan 42, which is positioned near the air outlet 321 to deliver air to the air outlet 321, so that the heat generated by the display module 1 can be discharged from the air outlet 321 with the airflow. In some optional embodiments, the number of exhaust fans 42 is less than or equal to the number of air outlets 321, and different exhaust fans 42 are arranged opposite to different air outlets 321. The air in the heat dissipation space can carry the heat emitted by the display module 1 and be discharged from the air outlet 321. The path by which the heat emitted by the display module 1 is discharged from the heat dissipation space is as follows: Figure 6 As shown by the thin arrow in the image. For example, as... Figure 7A As shown, there are a total of six air outlets. Four of the air outlets 321 are equipped with four corresponding exhaust fans 42, while the remaining two air outlets 325 may not have corresponding exhaust fans 42. Optionally, all six air outlets are at the same height. Further, the two air outlets 325 are located on the left and right sides of the four air outlets 321, respectively. Of course, in practical applications, the number and arrangement of air outlets can be freely set according to specific needs, and this embodiment of the invention does not impose any particular restrictions on this.

[0095] To control the temperature of the rear casing 3 of the entire unit and ensure it remains below the maximum permissible temperature, in some optional embodiments, the temperature of the rear casing 3 can be controlled by selecting an appropriate number and specification of exhaust fans. The specifications of the exhaust fans include, for example, CMM, which is the volume of air exhausted by the exhaust fan per minute, measured in cubic meters (m³). 3 / min.

[0096] In some optional embodiments, the volume of air discharged per minute by all exhaust fans 42 is defined as the sum of CMM values. The sum of the CMM values ​​of all exhaust fans 42 is greater than or equal to the ratio of the target CMM value to the opening ratio of the air outlet 321 corresponding to each exhaust fan 42. This setting ensures that the temperature of the rear housing 3 is controlled below the maximum allowable temperature value. After calculating the sum of the CMM values ​​of all exhaust fans 42, an appropriate number and CMM of exhaust fans 42 can be selected, provided that the sum of the CMM values ​​of these exhaust fans 42 is CMM. 总 The ratio of the target value of CMM to the opening ratio of the air outlet 321 is acceptable.

[0097] It should be noted that the opening ratio of the aforementioned air outlet 321 is equal to the ratio of the opening area of ​​the air outlet 321 to the original area of ​​the air outlet before the opening was processed. Specifically, the original area can be understood as the area enclosed by the outer contour of the hollowed-out area corresponding to the air outlet 321; the hollowed-out area corresponding to the air outlet 321 is the overall area formed by the combination of the opening of the air outlet 321 and the un-hollowed-out portion of the spaced openings. For example... Figure 7C The diagram shows the hollowed-out area 3210 of the air outlet, the opening 3211 of the air outlet 321, and the unhollowed-out portion 3212 with the interspersed openings. The outer contour of the hollowed-out area 3210 corresponding to the air outlet 321 is rectangular; optionally, the outer contour of the hollowed-out area 3210 is square. It is worth noting that when there are multiple air outlets 321, the opening ratio of different air outlets 321 may be different. In this case, the opening ratio of the air outlet 321 can be obtained by comparing the sum of the opening areas of all air outlets 321 corresponding to the air outlets 42 with the original area of ​​all air outlets 321 with the air outlets 42 before the openings were processed.

[0098] The target value of CMM mentioned above can be calculated using the following formula:

[0099]

[0100] Among them, CMM 目标 CMM target value; ΔT is the temperature difference between display module 1 and 38℃ when the ambient temperature is 38℃; M is the unit air mass of standard state air; C pQ is the specific heat of air under standard conditions at constant pressure; Q is the heat generated by the entire machine structure in 1 minute of operation.

[0101] Specifically, Q can be calculated using the following formula: The unit is cal, where 60 refers to the working time of display module 1 being 60s; 4.2 refers to the amount of heat required to raise the temperature of 1g of water at 0℃ by 1℃, which is 4.2J; and P is the power of display module 1.

[0102] In one specific embodiment, when the ambient temperature is 38°C, the temperature of the display module 1 is in the range of 40°C to 60°C.

[0103] It is understandable that the overall structure can operate within a certain ambient temperature range. The aforementioned ambient temperature of 38℃ is one of the operating ambient temperatures, corresponding to the ambient temperature during outdoor use in a certain region over a certain period of time (e.g., summer). Using 38℃ as the ambient temperature for testing can simulate the working state of the overall structure in a relatively extreme environment, obtaining a CMM value with a wider range of applicability.

[0104] In some embodiments, when the ambient temperature is 38°C, the temperature of the display module 1 can be 40°C, 41°C, 42°C, 43°C, 44°C, 45°C, 46°C, 47°C, 48°C, 49°C, 50°C, 51°C, 52°C, 53°C, 54°C, 55°C, 56°C, 57°C, 58°C, 59°C, or 60°C. The values ​​between adjacent values ​​can be rounded to be considered as the above-mentioned integer temperatures.

[0105] In some embodiments, when the ambient temperature is 38°C, the temperature of the display module 1 can be greater than or equal to 45°C; preferably, when the ambient temperature is 38°C, the temperature of the display module 1 can be less than or equal to 48°C, thereby ensuring the normal use of the display module 1.

[0106] The temperature of display module 1 can be understood as the actual temperature detected at its printed circuit board when the entire device is powered on and displays a static image at a preset ambient temperature and reaches a stable temperature state. In specific testing, the static image can be an image where all pixels are displaying an L255 state. In specific testing, the time during which the temperature of each part does not change significantly after powering on can be greater than or equal to 30 minutes.

[0107] The derivation process of the above CMM target value formula is as follows:

[0108] Under standard atmospheric pressure, the heat Q discharged by the exhaust fan 排 It can be expressed by the following formula:

[0109] Q 排 =Cp×W×ΔT

[0110] Where W is the weight of air expelled per minute, and W = CMM 目标 Substituting ×M into the above formula, we get:

[0111] Q 排 =Cp×CMM 目标 ×M×ΔT

[0112] For ease of calculation, assume that the heat generated by display module 1 is Q and the heat generated by the exhaust fan is Q. 排 Equal to this, based on this, the formula for the working heat Q of display module 1 is substituted into the above heat Q. 排 The formula can be obtained as follows:

[0113] Q = Q 排 =Cp×CMM 目标 ×M×ΔT

[0114] Therefore, the formula for the target value of the CMM can be derived as follows:

[0115]

[0116] For ease of calculation, we assume the air is under standard conditions. The temperature of standard air is 20℃, the atmospheric pressure is 760 mmHg, and the humidity is 65%. The mass of air per unit volume, M, is 1200 g / m³. 3 For ease of calculation, the specific heat of air at constant pressure under standard conditions, C, is used. p Take 0.24 kcal / kg℃ (i.e., 0.24 cal / g℃).

[0117] Furthermore,

[0118]

[0119] The unit air mass M is 1200 g / m³ 3 Specific heat of air at constant pressure C p Substituting 0.24 cal / g℃ into the above formula, we can derive the following formula:

[0120]

[0121] Taking a 31.5-inch display panel as an example, with an ambient temperature of 38℃, the maximum allowable temperature of display module 1 is 48℃, and the power P of display module 1 is approximately 400W. Under these conditions, the following can be calculated using the formula above:

[0122]

[0123] If the opening ratio of the aforementioned air outlet is 62%, then the total CMM value of the outlet fan 42 is approximately equal to 2 / 0.6 = 3.332m. 3 / min. Based on this, four exhaust fans can be selected, with each exhaust fan having a CMM value of 0.92m. 3 / min, the sum of the CMM values ​​of these four exhaust fans is 0.92 × 4 = 3.68m 3 / min, greater than the sum of the above CMM values ​​(3.332m) 3 This design ( / min) ensures that the temperature of display module 1 (i.e., the actual temperature of display module 1 on its printed circuit board when the entire structure is lit up and displays a static image and reaches a stable temperature under an ambient temperature of 38℃; during testing, the static image is an L255 state image with all pixels displayed) is controlled to not exceed 48℃; at the same time, the temperature of the back cover 3 is controlled to not exceed 39℃, so that the temperature of the entire casing is within a comfortable range, improving the user experience.

[0124] In some alternative embodiments, such as Figure 2 , Figure 6 and Figure 7B As shown, the heat dissipation device also includes a baffle 43, which is disposed between the exhaust fan 42 and the opposite exhaust port 321, for example, as Figure 7B As shown, the baffle 43 is a rectangular frame that surrounds the exhaust fan 42. Four baffles 43 are correspondingly provided for the four exhaust fans 42, and each baffle 43 forms an exhaust channel between the exhaust fan 42 and its opposite air outlet 321. This helps improve the air exhaust efficiency in the heat dissipation space.

[0125] In some alternative embodiments, such as Figure 1 and Figure 8 As shown, a fourth air inlet 326 is also provided on the side of the rear shell 3 to further increase the air intake. Optionally, when the entire structure is placed on a horizontal plane, the fourth air inlet 326 can be provided on the left and right sides of the rear shell 3, and closer to the lower side of the rear shell.

[0126] In some alternative embodiments, such as Figure 9 and Figure 10 As shown, the overall structure also includes a semiconductor heat-conducting module 5 and a heat sink assembly 6. The semiconductor heat-conducting module 5 is installed between the backplate 13 of the display module 1 and the heat sink assembly 6. The semiconductor heat-conducting module 5 is connected to the heat sink assembly 6 and is used to conduct the heat generated by the display module 1 to the heat sink assembly 6. For example, as... Figure 9 As shown, the semiconductor heat dissipation module 5 is mounted on the backplate 13 of the display module 1 and is located away from the backlight module.Figure 9 Only one side of the optical film layer 151 and LED light panel 152 is shown, between the back plate 13 and the heat sink assembly 6. The heat sink assembly 6 is connected to the semiconductor thermal conductive module 5 and is located on the side of the semiconductor thermal conductive module 5 away from the back plate 13; the semiconductor thermal conductive module 5 is used to conduct the heat generated by the display module 1 to the heat sink assembly 6, and then the heat is conducted to the aforementioned heat dissipation device via the heat sink assembly 6. With the help of the semiconductor thermal conductive module 5 and the heat sink assembly 6, the heat generated by the display module 1 can be conducted to the aforementioned heat dissipation device in a timely manner, thereby accelerating heat dissipation. Among them, as shown in the figure... Figure 10 As shown, the heat sink assembly 6 may include a grille structure 61 disposed on the heat sink base 62, with the grille structure 61 located on the side of the heat sink base 62 away from the backplate 13 of the display module 1. Preferably, the base 62 and the grille structure 61 are an integral structure, i.e., made of the same material and manufactured in a single process. Preferably, the grille structure extends along the direction from the ground side to the top side of the overall structure, which facilitates airflow between the grille structures and removes heat. Figure 10 The semiconductor thermal module 5 is not shown; only the location and structure of the heat sink assembly 6 are schematically shown.

[0127] Of course, the embodiments of the present invention are not limited thereto. In practical applications, depending on specific needs, only the heat sink assembly 6 can be provided, and the semiconductor heat conduction module 5 can be omitted. For example, in Figure 6 In the middle, the heat sink assembly 6 is arranged adjacent to the back plate 13 of the display module 1. When the entire structure is working normally, the heat sink assembly 6 has...

[0128] In summary, the overall structure provided by the embodiments of the present invention includes a display module and an overall frame. The overall frame includes at least one outer frame side. Each outer frame side is located on the side of the front frame side of the display module away from the display panel and is in contact with the front frame side. The total contact area between all the outer frame sides and their respective corresponding front frame sides satisfies the following relationship: By ensuring that the total contact area satisfies this relationship, the heat transferred from the display module to the outer frame can be reduced, thus preventing the outer frame from overheating and improving its lifespan and user experience. At the same time, it can ensure that the sides of the outer frame have sufficient strength to improve the overall strength of the outer frame and thus enhance structural stability.

[0129] It should be noted that the description of the range defined by "a1~a2" used in this disclosure includes the endpoint values. For example, the maximum width L of the outer frame side 21 can be designed to be between 11.5mm and 12.5mm. This range includes the two endpoint values ​​of 11.5mm and 12.5mm. That is, the maximum width of the outer frame side 21 can be either 11.5mm or 12.5mm.

[0130] It should be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A complete machine structure, characterized in that, The overall structure includes a display module and an outer frame. The display module includes a display panel and a front frame. The front frame includes a front frame side located outside the side of the display panel. The outer frame includes at least one outer frame side. Each outer frame side is located opposite the front frame side, away from the display panel, and is in contact with the front frame side. The total contact area between all the outer frame sides and their respective corresponding front frame sides satisfies the following relationship: Wherein, S is the total contact area; L is the maximum width of the outer frame side at the contact position with the front frame side in the direction perpendicular to the contact surface between the outer frame side and the front frame side; P is the power of the display module; the power is the sum of the power of the display panel and the power of the backlight module of the display module; K is the thermal conductivity of the outer frame side; T1 is the temperature of the display module under an ambient temperature of 20℃; the temperature of the display module is defined as the actual temperature of the display module at its printed circuit board when the display module of the whole structure is lit up to display a static image and reaches a stable temperature state under a preset ambient temperature; T2 is the maximum allowable temperature of the surface of the outer frame side away from the display module under an ambient temperature of 20℃. The maximum allowable temperature T2 of the surface of the outer frame away from the display module is less than or equal to 50°C. The total contact area between all the outer frame sides and their respective corresponding front frame sides satisfies the following relationship: Wherein, the value of r ranges from [0.5, 1).

2. The overall structure according to claim 1, characterized in that, r＝0.8。 3. The overall structure according to claim 1, characterized in that, The maximum allowable temperature T2 on the side of the outer frame is 38°C.

4. The overall structure according to any one of claims 1-3, characterized in that, The power of the display module is greater than or equal to 190W.

5. The overall structure according to claim 1, characterized in that, The outer frame side and the front frame side are spaced apart from each other, and the outer frame side has a contact structure. The surface of the contact structure that contacts the front frame side is the contact surface. There are multiple contact surfaces, and the multiple contact surfaces are evenly distributed on the inner surface of the outer frame side opposite to the front frame side. There is one contact surface, and the contact surface is in contact with the side edge line of the front frame.

6. The overall structure according to claim 5, characterized in that, The multiple contact surfaces have the same shape and equal area.

7. The overall structure according to claim 5, characterized in that, The contact structure includes multiple contact portions, each of which has a contact surface; at least a portion of the contact portions has mounting holes that penetrate the contact portion in a direction perpendicular to the contact surface; the overall structure also includes screws, the number of which is the same as the number of mounting holes, and each screw passes through each mounting hole in a corresponding manner and is connected to the side of the front frame.

8. The overall structure according to claim 7, characterized in that, On the inner surface of the outer frame side, and between each two adjacent contact portions, there is a comb-shaped protrusion structure, the protrusion structure being spaced apart from the front frame side.

9. The overall structure according to any one of claims 1-3, characterized in that, The overall structure also includes a rear shell, which includes a rear plate located on the side opposite to the light-emitting surface of the display module, and a rear shell side connected to the outer frame of the whole machine. The rear shell side and the rear plate form a heat dissipation space outside the back plate of the display module. A heat dissipation device is provided in the heat dissipation space to dissipate the heat generated by the display module. The rear shell includes an air inlet and an air outlet.

10. The overall structure according to claim 9, characterized in that, At least one air outlet is provided on the rear panel near the top side of the rear shell, and a first air inlet is provided on the rear panel near the ground side of the rear shell. The heat dissipation device includes an exhaust fan, which is located near the air outlet and is used to deliver air to the air outlet.

11. The overall structure according to claim 10, characterized in that, A second air inlet is also provided on the rear side of the ground side, near the first air inlet.

12. The overall structure according to claim 10, characterized in that, The volume of air discharged per minute by all the aforementioned exhaust fans is defined as the sum of CMM values; the sum of CMM values ​​is greater than or equal to the ratio of the target value of CMM to the opening ratio of the air outlet; The target value of CMM 目标 The following relationship must be satisfied: Where ΔT is the difference between the temperature of the display module and 38℃ when the ambient temperature is 38℃; M is the unit air mass of standard state air; C p is the specific heat at constant pressure of air under standard conditions; Q is the heat generated by the entire machine structure in one minute of operation; The temperature of the display module is in the range of 40℃ to 60℃.

13. The overall structure according to claim 12, characterized in that, When the ambient temperature is 38°C, the temperature of the display module is greater than or equal to 45°C, and / or, The temperature of the display module is less than or equal to 48°C.

14. The overall structure according to claim 10, characterized in that, The heat dissipation device also includes a baffle, and the exhaust fan is opposite to one of the air outlets; the baffle is disposed between the exhaust fan and the opposite air outlet to form an exhaust channel between them.

15. The overall structure according to claim 1, characterized in that, The overall structure also includes a heat sink assembly located on one side of the display module backplate.

16. The overall structure according to claim 15, characterized in that, The overall structure also includes a semiconductor thermal conductive module, wherein the semiconductor thermal conductive module is installed between the back plate of the display module and the heat sink assembly; the semiconductor thermal conductive module is connected to the heat sink assembly and is used to conduct the heat generated by the display module to the heat sink assembly.

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