Display unit and display screen

Abstract

This application discloses a display unit and a display screen. The display unit includes a housing and a heat sink. The heat sink is connected to the housing, and its heat dissipation area gradually decreases along the height direction of the housing, so that the heat dissipation capacity of the heat sink is distributed in a gradient along the height direction of the housing. Based on this, during the use of the display unit, the heat dissipation capacity of the display unit along the height direction is distributed in a gradient. That is, the closer to the top of the display unit, the stronger the heat dissipation capacity of the display unit; conversely, the closer to the bottom of the display unit, the weaker the heat dissipation capacity. Based on this, when the display unit is used as a component of the display screen, the temperature of the top of the display screen can be made closer to the temperature of the bottom of the display screen, which can suppress the chimney effect, make the display screen display colors more uniform, and thus improve the display effect of the display screen.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display unit and a display screen. Background Technology

[0002] A color difference often occurs between the top and bottom of a display screen during use. The inventor discovered that this phenomenon is caused by the screen being typically placed vertically. Due to the chimney effect, rising hot air heats the upper part of the screen, resulting in a characteristic of a higher temperature at the top and a lower temperature at the bottom, creating a large temperature difference. In the warmer areas, the screen appears bluish, creating a noticeable contrast with the cooler areas and affecting the image quality. Utility Model Content

[0003] The present invention introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the present invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this utility model provides a display unit.

[0006] A second aspect of this invention provides a display screen.

[0007] In view of this, a display unit is provided according to a first aspect of the embodiments of this application, comprising:

[0008] A frame and a display module, wherein the display module is connected to the frame;

[0009] The display module includes: a housing and a heat sink, wherein the heat sink is disposed on the housing;

[0010] In this design, the heat dissipation area of ​​the heat sink gradually decreases from the top to the bottom of the housing along the height direction of the housing, so that the heat dissipation capacity of the heat sink is distributed in a gradient along the height direction of the housing.

[0011] In one feasible implementation, the heat sink includes:

[0012] Multiple heat dissipation fins are provided, which are used to contact the lamp board of the display module, and the heat dissipation area is the contact area between the heat dissipation fins and the lamp board.

[0013] In one feasible implementation, the housing is divided into at least two levels along the height direction, and the heat dissipation area of ​​the heat sink in different levels of the housing gradually decreases from the top to the bottom along the height direction of the housing.

[0014] In one feasible implementation, at least two heat dissipation fins are distributed in each layer, and the heat dissipation area in each layer is the contact area between all the heat dissipation fins in the layer and the display module.

[0015] In one feasible implementation, the housing includes multiple sub-modules; the heat sink includes multiple heat sink ribs, the width of which gradually decreases along the width direction of the sub-module, from the middle of the sub-module to both sides.

[0016] In one feasible implementation, the plurality of heat dissipation ribs along the width direction of the submodule are divided into central heat dissipation ribs and edge heat dissipation ribs, and the width ratio of the edge heat dissipation ribs to the width of the central heat dissipation ribs is 0.3 to 0.5.

[0017] In one feasible implementation, when the housing is divided into at least two levels along the height direction, the width of the heat dissipation fins in at least some of the multiple levels gradually decreases along the width direction of the submodule, from the middle of the submodule to both sides.

[0018] In one feasible implementation, the widths of the heat dissipation fins in at least a portion of the plurality of layers satisfy the following relationship:

[0019] d j =0.5 j-1 d

[0020] Where d is the width of the heat dissipation rib located in the middle of the layer along the width direction, j is the number of multiple heat dissipation ribs from the middle of the layer to both sides, the heat dissipation rib located in the middle of the layer is numbered with an initial value of 1, and there are one or two heat dissipation ribs in the middle.

[0021] In the multiple layers, along the height direction of the shell, the width of the multiple heat dissipation fins in the bottommost layer is the same.

[0022] In one feasible implementation, the display module includes a heat-generating component, and at least a portion of the heat-dissipating fins have a width greater than or equal to the width of the heat-generating component.

[0023] A second aspect of the embodiments of this application provides a display screen, comprising:

[0024] The display unit as described in any of the above technical solutions.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The display unit provided in this application embodiment includes a housing and a heat sink. The heat sink is connected to the housing, and the heat dissipation area of ​​the heat sink gradually decreases along the height direction of the housing, so that the heat dissipation capacity of the heat sink is distributed in a gradient along the height direction of the housing. Based on this, during the use of the display unit, the heat dissipation capacity of the display unit along the height direction is distributed in a gradient. That is, the closer to the top of the display unit, the stronger the heat dissipation capacity of the display unit, and conversely, the closer to the bottom of the display unit, the weaker the heat dissipation capacity. Based on this, when the display unit is used as a component of the display screen, the temperature of the top of the display screen can be made closer to the temperature of the bottom of the display screen, which can suppress the chimney effect, make the display screen display colors more uniform, and thus improve the display effect of the display screen.

[0027] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 This is a temperature distribution diagram of a display screen under operating conditions in traditional technology;

[0030] Figure 2 Temperature distribution diagram of a display screen in operation state according to an embodiment of this application;

[0031] Figure 3 A schematic structural diagram of a display unit at one angle according to an embodiment of this application;

[0032] Figure 4 A schematic structural diagram of a display unit from another angle, according to one embodiment of this application;

[0033] Figure 5 for Figure 4 A magnified view of a submodule at the first level;

[0034] Figure 6 for Figure 4A magnified view of a submodule at the second level;

[0035] Figure 7 for Figure 4 A magnified view of a submodule at the third level;

[0036] Figure 8 for Figure 4 A magnified view of a submodule at the fourth level;

[0037] Figure 9 A schematic structural diagram of a display screen at one angle according to an embodiment of this application;

[0038] Figure 10 A schematic structural diagram of a display screen from another angle, according to one embodiment of this application.

[0039] in, Figures 3 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0040] 110 Housing, 120 Heat sink, 210 Display module, 220 Handle, 230 Control assembly; 111 Sub-module, 121 Heat sink fin, 1211 Middle heat sink fin, 1212 Side heat sink fin. Detailed Implementation

[0041] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0043] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0044] Considering that LED displays are typically placed vertically, due to the chimney effect, hot air rises and heats the upper part of the screen, resulting in a characteristic where the upper part of the display is always hotter than the lower part, with a temperature difference usually exceeding 5°C. Furthermore, because the driver chip is located on the back of the module, localized high-temperature spots are generated, with the temperature difference between the high-temperature and low-temperature areas reaching over 10°C. In the higher-temperature areas, the display screen appears bluish, creating a significant difference from the low-temperature areas and affecting the image quality.

[0045] Conventional display screens typically feature a symmetrical bottom casing design, with all modules using the same casing. However, in actual use, due to the chimney effect, rising hot air heats the upper module, resulting in a situation where the upper part is hotter than the lower part. For example... Figure 1 As shown, the temperature difference between the upper and lower modules is usually greater than 5°C. Meanwhile, because the bottom shell only serves a supporting function and does not directly contact the heat source (driver chip), even when observing a single module, localized high temperatures can occur, with the temperature difference between the high-temperature and low-temperature areas potentially exceeding 10°C.

[0046] In LED display products, a temperature difference greater than 5°C will cause localized bluish discoloration in high-temperature areas, creating a noticeable color difference with the low-temperature areas. To improve the display effect, the temperature difference between individual modules and between upper and lower modules should be improved. Therefore, this invention designs a gradient-colored base shell.

[0047] like Figures 3 to 10 As shown, based on this, a display unit is proposed according to a first aspect of the embodiments of this application, including: a frame and a display module 210, the display module 210 being connected to the frame, the display module 210 including: a housing 110 and a heat sink 120, the heat sink 120 being disposed on the housing 110; wherein, along the height direction of the housing 110, from the top to the bottom of the housing 110, the heat dissipation area of ​​the heat sink 120 gradually decreases, so that the heat dissipation capacity of the heat sink 120 is distributed in a gradient along the height direction of the housing 110.

[0048] The display unit provided in this application embodiment includes a frame and a display module 210. The display module 210 is connected to the frame and includes a housing 110 and a heat sink 120. The heat sink 120 is connected to the housing 110, and the heat dissipation area of ​​the heat sink 120 gradually decreases along the height direction of the housing 110, so that the heat dissipation capacity of the heat sink 120 is distributed in a gradient along the height direction of the housing 110. Based on this, during the use of the display unit, the heat dissipation capacity of the display unit along the height direction is distributed in a gradient. That is, the closer to the top of the display unit, the stronger the heat dissipation capacity of the display unit, and conversely, the closer to the bottom of the display unit, the weaker the heat dissipation capacity. Based on this, when the display unit is used as a component of the display screen, the temperature of the top of the display screen can be made closer to the temperature of the bottom of the display screen, which can suppress the chimney effect, make the display screen display colors more uniform, and thus improve the display effect of the display screen.

[0049] It is understood that the heat dissipation area of ​​the heat sink 120 gradually decreases along the height direction of the housing 110, which means that when the display unit is in normal use, the heat dissipation area of ​​the heat sink 120 gradually decreases from the top to the bottom of the housing 110.

[0050] It is understood that the heat dissipation capacity of the heat sink 120 is distributed in a gradient along the height direction of the housing 110, meaning that the heat dissipation capacity of the heat sink 120 is different along the height direction of the housing 110. Specifically, the heat dissipation capacity of the heat sink 120 gradually decreases from the top to the bottom of the housing 110.

[0051] like Figures 3 to 4 As shown, in one feasible embodiment, the heat sink 120 includes: a plurality of heat sink ribs 121, which are used to contact the lamp plate of the display module 210, and the heat dissipation area is the contact area between the heat sink ribs 121 and the display module 210.

[0052] In this technical solution, a specific design of the heat sink 120 is further provided. The heat sink 120 may include multiple heat sink fins 121. During use, the heat sink fins 121 are used to contact the display module 210. The heat energy of the display module 210 can be transferred and dissipated through the heat sink fins 121. By using the heat sink fins 121 to contact the display module 210 for heat dissipation, the heat dissipation effect of the heat sink 120 can be improved. In this way, while ensuring the temperature balance of the display screen, the operating temperature of the display screen is reduced, which can improve the display effect and service life of the display screen.

[0053] In this technical solution, the heat dissipation area is the contact area between the heat dissipation fin 121 and the display module 210. That is, along the height direction of the housing 110, the contact area between the heat dissipation fin 121 located at or near the top of the housing 110 and the display module 210 is greater than the contact area between the heat dissipation fin 121 located at or near the bottom of the housing 110 and the display module 210. Based on this, a gradient distribution of heat dissipation effect can be achieved, so that the heat dissipation capacity of the display unit gradually decreases from the top to the bottom along the height direction.

[0054] like Figures 4 to 8 As shown, in one feasible embodiment, the housing 110 is divided into at least two levels along the height direction, and the heat dissipation area of ​​the heat sink 120 in different levels of the housing 110 gradually decreases from the top to the bottom along the height direction of the housing 110.

[0055] In this technical solution, a further distribution pattern of the heat sink 120 is provided. The housing 110 is divided into two or more layers along the height direction. From the top to the bottom of the housing 110, the heat dissipation area of ​​the heat sink 120 in different layers gradually decreases. This arrangement makes it easier to process the heat sink 120. For example, the heat sink 120 in a layer can be the same or similar. Based on this, it is only necessary to arrange different heat sinks 120 according to the number of layers to achieve a gradient distribution of the heat dissipation capacity of the heat sink 120 along the height direction of the housing 110, which facilitates the processing of the display unit and can reduce manufacturing costs.

[0056] like Figures 4 to 8 As shown, in one feasible implementation, at least two heat dissipation fins 121 are distributed in each layer, and the heat dissipation area in each layer is the contact area between all the heat dissipation fins 121 in the layer and the display module 210.

[0057] In this technical solution, the contact area between the heat dissipation fin 121 and the display module 210 in each layer is the heat dissipation area of ​​the heat sink 120 in that layer. For example, if the housing 110 of the display unit is divided into four layers, with four heat dissipation fins 121 in each layer, then the contact area between the four heat dissipation fins 121 and the display module 210 in each layer is the contact area of ​​that layer. Along the height direction of the housing 110, from top to bottom, the heat dissipation area of ​​the heat sink 120 decreases relative to different layers. This allows for stronger heat dissipation at the top of the housing 110 and weaker heat dissipation at the bottom, resulting in a more balanced color display, reducing the number of displayed colors, and improving the quality of the display screen.

[0058] like Figures 4 to 8As shown, in one feasible embodiment, the housing 110 includes a plurality of sub-modules 111; the heat sink 120 includes a plurality of heat sink fins 121, and the width of the heat sink fins 121 gradually decreases along the width direction of the sub-modules 111, from the middle of the sub-modules 111 to both sides.

[0059] Furthermore, considering that during operation, on the one hand, most of the heat-generating components of the display are located in the middle of the sub-module 111 along its width; on the other hand, the sides of the display are easier to dissipate heat. Therefore, the temperature in the middle area of ​​a traditional display is higher than that on the sides. Based on this, this technical solution further provides a distribution method for the heat dissipation fins 121 along the width of the sub-module 111. Along the width of the sub-module 111, from the middle to the sides, the width of the heat dissipation fins 121 gradually decreases. That is, the width of the heat dissipation fins 121 located in the middle of the sub-module 111 or closer to the middle is larger, while the width of the heat dissipation fins 121 closer to the sides of the sub-module 111 is smaller. This makes the heat dissipation capacity in the middle of the sub-module 111 stronger, while the heat dissipation capacity on the sides is relatively weaker. During use, this allows for a more balanced temperature of the display, further improving the display effect.

[0060] like Figures 4 to 8 As shown, in one feasible implementation, a plurality of heat dissipation ribs 121 along the width direction of submodule 111 are divided into a central heat dissipation rib 1211 and an edge heat dissipation rib 1212, and the ratio of the width of the edge heat dissipation rib 1212 to the width of the central heat dissipation rib 1211 is 0.3 to 0.5.

[0061] In this technical solution, specific structural parameters of the heat dissipation rib 121 are further provided. The heat dissipation rib 121 located in the middle of the sub-module 111 is defined as the middle heat dissipation rib 1211 along the width of the sub-module 111, and the heat dissipation ribs 121 located on both sides of the sub-module 111 are defined as the side heat dissipation ribs 1212. The ratio of the width of the side heat dissipation rib 1212 to that of the middle heat dissipation rib 1211 is 0.3 to 0.5. With this setting, on the one hand, the sub-module 111 can present a trend of stronger heat dissipation capacity in the middle and weaker heat dissipation capacity on both sides along the width direction, which can make the display temperature more balanced; on the other hand, it can ensure the heat dissipation effect of the display unit, especially ensuring that the middle and both sides of the display unit can achieve good heat dissipation effect. If the ratio of the width of the side heat dissipation rib 1212 to the width of the middle heat dissipation rib 1211 is less than 0.3, the heat dissipation capacity on both sides of the submodule 111 may be too weak, resulting in excessively high side temperature of the display screen. If the ratio of the width of the side heat dissipation rib 1212 to the width of the middle heat dissipation rib 1211 is greater than 0.3, the heat dissipation capacity in the middle of the submodule 111 may approach the heat dissipation capacity at the side of the submodule 111, and the display screen may exhibit a high temperature in the middle.

[0062] like Figures 4 to 8 As shown, in some examples, taking four heat dissipation ribs 121 along the width direction as an example, the two heat dissipation ribs 121 in the middle are the middle heat dissipation ribs 1211, and the other two heat dissipation ribs 1212 are the edge heat dissipation ribs 1212; based on the same principle, taking three heat dissipation ribs 121 along the width direction as an example, then the one heat dissipation rib 121 in the middle is the middle heat dissipation rib 1211, and the other two heat dissipation ribs 1212 are the edge heat dissipation ribs 1212; for example, if five heat dissipation ribs 121 are included along the width direction, then the one heat dissipation rib 121 in the middle is the middle heat dissipation rib 1211, and the other four heat dissipation ribs 121 are the edge heat dissipation ribs 1212.

[0063] In one feasible implementation, when the housing 110 is divided into at least two levels along the height direction, the heat sink 120 in at least some of the multiple levels gradually decreases in width along the width direction of the submodule 111, from the middle of the submodule 111 to both sides.

[0064] In this technical solution, when the housing 110 is divided into at least two levels along the height direction, the heat dissipation components 120 in at least some levels gradually decrease in width along the width direction of the submodule 111, from the middle to both sides of the submodule 111. The width of the heat dissipation ribs 121 can also be the same in some levels, or the width of the heat dissipation ribs 121 in some levels can show a trend of being wider in the middle and narrower at the sides. The goal is simply to achieve a more balanced operating temperature for the display screen when the display unit is a component of the display screen. This application does not limit all heat dissipation ribs 121 to maintaining a trend of being wider in the middle and narrower at the sides.

[0065] like Figures 4 to 8 As shown, in some examples, the top of the housing 110 has a greater requirement for heat dissipation during normal operation. Therefore, for the distribution of the top heat dissipation fin 121, the width of the heat dissipation fin 121 can gradually decrease along the width direction of the sub-module 111, from the middle of the sub-module 111 to both sides. As for the bottom of the housing 110, the requirement for heat dissipation capacity is smaller. In order to facilitate processing, the bottom heat dissipation fin 121 can be designed with the same width.

[0066] like Figures 4 to 8 As shown, in one feasible implementation, the width of the heat dissipation fins 121 in at least some of the multiple layers satisfies the following relationship:

[0067] d j =0.5 j-1 d

[0068] Where d is the width of the heat dissipation rib 121 located in the middle of the layer along the width direction, j is the number of the multiple heat dissipation ribs 121 from the middle of the layer to both sides, the heat dissipation rib 121 located in the middle of the layer is numbered with an initial value of 1, and there are one or two heat dissipation ribs 121 in the middle.

[0069] In this technical solution, the width of the heat dissipation ribs 121 in some layers is further quantified. The determination of the above formula facilitates the determination of the width of each heat dissipation rib 121, thus facilitating the production and processing of the heat dissipation ribs 121 and the assembly of the display unit. By determining the above formula, at least some layers in multiple layers can exhibit a trend where the width of the central heat dissipation rib 1211 is larger than that of the edge heat dissipation ribs 1212, enabling the heat dissipation capacity of the submodule 111 to exhibit a gradient change along the width direction.

[0070] In this technical solution, taking a layer with four heat dissipation ribs 121 along its width as an example, the two middle heat dissipation ribs 121 are numbered 1, and the heat dissipation rib 121 adjacent to and closer to the center with a value of 1 is numbered 2. That is, the four heat dissipation ribs 121 are numbered 2-1-1-2. Similarly, taking a layer with five heat dissipation ribs 121 along its width as an example, the heat dissipation rib 121 closest to the center is numbered 1, and the four heat dissipation ribs 121 are numbered 3-2-1-2-3. Taking a layer with three heat dissipation ribs 121 as an example, the three heat dissipation ribs 121 are numbered 2-1-2. This pattern continues to determine the dimensions of the heat dissipation ribs 121.

[0071] In one feasible implementation, among the multiple layers, the width of the multiple heat dissipation fins 121 in the bottommost layer along the height direction of the housing 110 is the same. This arrangement takes into account that the width of the bottommost heat dissipation fins 121 is smaller, and the bottom of the housing 110 has a smaller demand for heat dissipation capacity. Therefore, for ease of manufacturing, the bottommost heat dissipation fins 121 can be arranged with the same width.

[0072] In one feasible implementation, the display module 210 includes a heat-generating component, and at least some of the heat-dissipating fins 121 have a width greater than or equal to the width of the heat-generating component.

[0073] In this technical solution, the display module 210 may also include a heat-generating component. The width of the multiple heat-generating fins 121 of the heat sink 120 may be determined based on the width of the heat-generating component. At least some of the heat-generating fins 121 may have a width greater than or equal to the width of the heat-generating component to ensure the heat dissipation capacity of the heat-generating fins 121.

[0074] In some examples, the heat-generating component may include a driver chip.

[0075] In some examples, the display unit of the display screen may also include a handle 220 and a control assembly 230. The handle 220 and the control assembly 230 are arranged sequentially on the housing 110 away from the display module 210. The handle 220 is used to move the display unit to realize the splicing of the display screen, and the control assembly 230 is used to assemble the control assembly 230.

[0076] Example

[0077] like Figures 1 to 10 As shown, this application embodiment provides a display unit with dimensions of 500*1000mm. Taking a display unit in conventional technology as an example for simulation, as follows... Figure 1 As shown, the temperature of the first-level lamp surface is the highest, decreasing sequentially downwards, with the lowest temperature at the fourth level. The highest temperature and maximum temperature difference of each level are shown in Table 1. The temperature difference of each level exceeds 10℃, and the maximum temperature difference of a single product reaches 18.4℃, far exceeding 10℃.

[0078] Table 1. Operating Temperature of 500*1000mm Display Units in Traditional Technology

[0079] First level 69.5℃ 54.1℃ 15.4℃ Second level 69.2℃ 56.5℃ 12.7℃ Third level 67.9℃ 54.5℃ 13.4℃ Fourth level 65.9℃ 51.1℃ 14.8℃

[0080] The display unit provided in this application embodiment includes: a housing 110; a heat sink 120, the heat sink 120 being disposed on the housing 110; wherein, along the height direction of the housing 110, the heat dissipation area of ​​the heat sink 120 gradually decreases, so that the heat dissipation capacity of the heat sink 120 is distributed in a gradient along the height direction of the housing 110.

[0081] The heat sink 120 includes a plurality of heat sink ribs 121, which are used to contact the display module 210, and the heat dissipation area is the contact area between the heat sink ribs 121 and the display module 210.

[0082] The housing 110 is divided into at least two levels along the height direction, and the heat dissipation area of ​​the heat sink 120 in different levels gradually decreases along the height direction of the housing 110.

[0083] The width of the heat dissipation fin 121 is based on the width of the heat source (driver chip). In this example, the basic width of the heat dissipation fin 121 is d = 3mm. Since the temperature in the middle of the lamp surface is higher than on the sides, the middle heat dissipation fin 121 is wider than the sides. Because the lamp surface temperature decreases with decreasing layer, the heat dissipation fin 121 in each layer gradually halves from the middle to the outside, thus:

[0084] The display units are divided into layers from top to bottom, with each row of modules forming one layer. In the example, the display unit is 500*1000mm, and the module size is 250*250mm, therefore there are 4 rows and 4 layers. If the display unit is 500*500mm and the module size is 250*250mm, then there are 2 rows and 2 layers. The layering can be determined based on the overall size and module size of any model.

[0085] The initial thickness of the heat dissipation fin 121 is based on the width of the smallest unit heat source it contacts. For example, in this case, the heat dissipation fin 121 contacts a driver chip, and the size of each driver chip is 3mm, so the initial width of the heat dissipation fin 121 is 3mm.

[0086] The design principle for the width of the heat dissipation fin 121 is as follows:

[0087] 1. Determine the initial width. The initial width is based on the width d of the smallest unit heat source.

[0088] 2. First level (from top to bottom): For each submodule 111, the width of the middle heat dissipation fin 121 is d. 1-1 =d; the width of the heat dissipation fins on both sides is halved by d. 1-2 =0.5d. (Typically, LED module driver chips have 4 columns. If there are more than four columns, the value is halved for each column.) 1-j =0.5 j-1 d), where d1 represents the first level, and the first level has four heat dissipation fins 121, numbered 2, 1, 1, and 2 respectively, denoted by d. 2-1 For example, d 2-2 This indicates that the first-level heat dissipation fin numbered 2 is 121.

[0089] 3. Second level (from top to bottom): For each submodule 111, the two middle columns of heat dissipation fins 121 are half the maximum width of the previous level, i.e., d. 2-1 =0.5d, the width of the heat dissipation fins on both sides is 121, which continues from the previous level, i.e., d. 2-2 =0.5d. Where d2 represents the second level, which has four heat dissipation fins 121, numbered 2, 1, 1, and 22 respectively, with d... 2-1 For example, d 2-1 This indicates that the second-level heat dissipation fin is numbered 121.

[0090] 4. Third level (from top to bottom): For each submodule 111, the width of the two middle columns of heat dissipation fins 121 continues the width of the middle column of the previous level, i.e., d. 3-1 =0.5d; the width of both sides is half the width of the middle, i.e., d 3-2 =0.25d. Where d3 represents the third level, which has four heat dissipation fins (121), numbered 2, 1, 1, and 2 respectively, with d... 3-1For example, d 3-1 This indicates the third-level heat dissipation fin numbered 121.

[0091] 5. Fourth level (from top to bottom): For each submodule 111, the two middle columns of heat dissipation fins 121 are half the width of the previous level, i.e., d. 4-1 =0.25d; the width on both sides continues the width of the previous level, i.e., d. 4-2 =0.25d. Where d4 represents the fourth level, which has four heat dissipation fins (121), numbered 2, 1, 1, and 2 respectively, with d... 4-1 For example, d 4-1 This indicates the fourth-level heat dissipation fin numbered 121.

[0092] In summary, for each submodule 111, after the width of the first level is determined, each subsequent level only changes the width of the middle or both sides, while the unchanging positions continue the width of the corresponding positions of the previous level. The change method is shown in Table 2 below.

[0093] Table 2 Correspondence between the layer level and the width of the heat dissipation fin 121 in this embodiment

[0094] First level 0.5d d d 0.5d Second level 0.5d 0.5d 0.5d 0.5d Third level 0.25d 0.5d 0.5d 0.25d Fourth level 0.25d 0.25d 0.25d 0.25d

[0095] For each submodule 111, the widths of the first-level heat dissipation fins 121 are 1.5mm, 3mm, 3mm, and 1.5mm respectively. The widths of the second-level heat dissipation fins 121 are 1.5mm, 1.5mm, 1.5mm, and 1.5mm respectively. The widths of the third-level heat dissipation fins 121 are 0.75mm, 1.5mm, 1.5mm, and 0.75mm respectively. The widths of the fourth-level heat dissipation fins 121 are 0.75mm, 0.75mm, 0.75mm, and 0.75mm respectively. Based on these parameters, a gradient bottom shell was designed and simulated. The simulation results are as follows. Figure 2 As shown. The temperature difference between each level is less than 5℃, and the maximum temperature of that product is only 8℃, below 10℃.

[0096] Table 3. Operating Temperature Table of Display Unit in Embodiments of this Application

[0097] First level 58.1℃ 54.7℃ 3.4℃ Second level 58.2℃ 55.3℃ 2.9℃ Third level 56.5℃ 53.1℃ 3.4℃ Fourth level 54.6℃ 50.1℃ 4.5℃

[0098] In summary, the display unit provided in this application embodiment utilizes a gradient heat sink 120 to reduce the temperature difference between modules. By adjusting the contact area between each layer of the heat sink 120 and the heat source, the temperature difference within a single module is reduced by more than 10°C, and the maximum temperature difference between modules is reduced by more than 10°C, achieving temperature uniformity. The gradient heat sink 120 can also lower the lamp surface temperature. Increasing the contact area between the heat sink 120 and the display module 210, with the increased area accounting for only 3% of the area of ​​the housing 110, can produce a significant cooling effect of 11.4°C on the module.

[0099] like Figures 1 to 10 As shown, a display screen is provided according to a second aspect of the embodiments of this application, including: a display unit as described in any of the above technical solutions.

[0100] The display screen provided in this application embodiment includes the display unit of any of the above-described technical solutions, and therefore the display screen has all the beneficial effects of the display unit of the above-described technical solutions.

[0101] In some examples, the display screen may include multiple display units, which are spliced ​​together to form the display screen.

[0102] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0103] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0104] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0105] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A display unit, characterized by include: A frame and a display module, wherein the display module is connected to the frame; The display module includes: a housing and a heat sink, wherein the heat sink is disposed on the housing; In this design, the heat dissipation area of ​​the heat sink gradually decreases from the top to the bottom of the housing along the height direction of the housing, so that the heat dissipation capacity of the heat sink is distributed in a gradient along the height direction of the housing.

2. The display unit of claim 1, wherein, The heat sink includes: Multiple heat dissipation fins are provided, which are used to contact the lamp board of the display module, and the heat dissipation area is the contact area between the heat dissipation fins and the lamp board.

3. The display unit according to claim 2, characterized in that, The housing is divided into at least two levels along the height direction, and the heat dissipation area of ​​the heat sink in different levels from the top to the bottom of the housing gradually decreases along the height direction of the housing.

4. The display unit according to claim 3, characterized in that, Each layer has at least two heat dissipation fins, and the heat dissipation area in each layer is the contact area between all the heat dissipation fins in the layer and the display module.

5. The display unit according to any one of claims 1 to 4, characterized in that, The housing comprises multiple sub-modules; The heat sink includes multiple heat sink ribs that extend along the width of the submodule, from the middle of the housing to both sides, with the width of the heat sink ribs gradually decreasing.

6. The display unit according to claim 5, characterized in that, Along the width direction of the submodule, the plurality of heat dissipation ribs are divided into central heat dissipation ribs and edge heat dissipation ribs, and the width ratio of the edge heat dissipation ribs to the central heat dissipation ribs is 0.3 to 0.

5.

7. The display unit according to claim 5, characterized in that, When the housing is divided into at least two levels along the height direction, the width of the heat dissipation fins in at least some of the multiple levels gradually decreases along the width direction of the submodule, from the middle of the submodule to both sides.

8. The display unit according to claim 7, characterized in that, The widths of the heat dissipation fins in at least some of the multiple layers satisfy the following relationship: d j =0.5 j-1 d Where d is the width of the heat dissipation rib located in the middle of the layer along the width direction, j is the number of multiple heat dissipation ribs from the middle of the layer to both sides, the heat dissipation rib located in the middle of the layer is numbered with an initial value of 1, and there are one or two heat dissipation ribs in the middle. In the multiple layers, along the height direction of the shell, the width of the multiple heat dissipation fins in the bottommost layer is the same.

9. The display unit according to any one of claims 2 to 4, characterized in that, The display module includes a heat-generating component, and among the plurality of heat-dissipating fins, at least a portion of the heat-dissipating fins have a width greater than or equal to the width of the heat-generating component.

10. A display screen, characterized by include: The display unit as described in any one of claims 1 to 9.

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