Heat dissipation mechanism, heat dissipation control method, and head-up display system

Abstract

The application relates to a heat dissipation mechanism, a heat dissipation control method and a head-up display system. The heat dissipation mechanism is used for heat dissipation of a workpiece. The workpiece comprises a shell, the shell is provided with a ventilation opening, the heat dissipation mechanism comprises an air outlet assembly and an air supply assembly, and the air outlet assembly is provided with an air outlet. One end of the air supply structure is connected to the air outlet, the other end is connected to the ventilation opening, and the air supply structure is provided with an air supply channel for connecting the air outlet and the ventilation opening. The air supply structure is deformed along with the increase of the air speed of the air outlet assembly, so that the air supply channel is expanded. The heat dissipation mechanism can solve the problem that the heat dissipation mechanism for the PGU is difficult to meet the heat dissipation requirement of the PGU.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a heat dissipation mechanism, a heat dissipation control method and a head-up display system. BACKGROUND

[0002] A picture generation unit (PGU) is an important component of a head-up display (HUD), and heat is generated during the working process of the PGU. In the related art, heat dissipation fins are usually arranged for heat dissipation. In order to improve the heat dissipation effect, a ventilation opening is further arranged on a protective shell outside the PGU, and a fan is installed at the ventilation opening to directly blow the PGU. However, in the current technology, the upper limit of the wind speed of the fan limits the heat dissipation effect, which makes it difficult to meet the PGU heat dissipation demand. SUMMARY

[0003] Therefore, it is necessary to provide a heat dissipation mechanism, a heat dissipation control method and a head-up display system to solve the problem that the heat dissipation mechanism currently used for the PGU is difficult to meet the PGU heat dissipation demand.

[0004] According to an aspect of the present application, a heat dissipation mechanism is provided for dissipating heat from a workpiece, the workpiece comprising a shell having a ventilation opening, the heat dissipation mechanism comprising: an air outlet assembly having an air outlet; and an air supply structure, one end of the air supply structure being connected to the air outlet and the other end being connected to the ventilation opening, and the air supply structure having an air supply channel therein for connecting the air outlet and the ventilation opening; wherein the air supply structure is configured to deform with an increase in the wind speed of the air outlet assembly, so as to expand the air supply channel.

[0005] In some embodiments, the air supply structure has an initial state and a deformed state; and the air supply structure is configured to be switched from the initial state to the deformed state when the wind speed of the air outlet assembly exceeds a preset wind speed.

[0006] In some embodiments, the air supply structure comprises a first end connected to the air outlet and a second end connected to the ventilation opening; wherein the first end is configured as an elastic structure; or both the first end and the second end are configured as elastic structures.

[0007] In some embodiments, the material of the elastic structure comprises rubber or silicone.

[0008] In some embodiments, the longitudinal section of the sidewall of the elastic structure includes a plurality of sub-connecting segments connected sequentially along the extension direction of the air supply channel; each sub-connecting segment includes an adjacent first segment and a second segment, the first segment and the second segment being intersected; the first segment of one sub-connecting segment and the second segment of another adjacent sub-connecting segment are arranged adjacent to each other; wherein, the longitudinal section of the air supply structure is a section parallel to the extension direction of the air supply channel.

[0009] In some embodiments, the thickness of the sidewall at the first end is greater than the thickness of the sidewall at the second end.

[0010] In some embodiments, the air outlet assembly includes a housing and a fan disposed within the housing, the air outlet is disposed on the housing, and an annular groove surrounding the air outlet is provided on the inner sidewall of the housing; the air supply structure is configured as an air supply pipe, one end of the air supply pipe is provided with an annular hook surrounding it, and the air supply pipe can extend into the housing through the air outlet, and the annular hook is engaged in the annular groove.

[0011] According to another aspect of this application, a heat dissipation control method is provided, wherein the method employs a heat dissipation mechanism as described above for heat dissipation.

[0012] In some embodiments, the method includes: obtaining the working temperature of the workpiece; comparing the working temperature with a preset temperature; if the working temperature is greater than or equal to the preset temperature, controlling the fan to operate at a wind speed greater than or equal to the preset wind speed; if the working temperature is less than the preset temperature, controlling the fan to operate at a wind speed less than the preset wind speed.

[0013] According to another aspect of this application, a head-up display system is provided, the head-up display system including the heat dissipation mechanism as described above.

[0014] The heat dissipation mechanism provided in this application establishes an air supply structure with an air supply channel between the air outlet component and the workpiece housing. This air supply channel expands as the air velocity of the air outlet component increases. Therefore, as the air velocity of the air outlet component increases, the air supply channel expands while the air outlet of the air outlet component maintains its original shape and size. This causes the air velocity to increase at the junction of the air supply channel and the housing, thereby increasing the upper limit of the air velocity without changing the air outlet component, thus meeting the heat dissipation requirements. Attached Figure Description

[0015] Figure 1 A schematic diagram of the heat dissipation mechanism in one embodiment of this application is shown;

[0016] Figure 2 It shows Figure 1Another schematic diagram of the heat dissipation mechanism in one state;

[0017] Figure 3 A cross-sectional view of the air supply structure of the heat dissipation mechanism in one embodiment of this application is shown;

[0018] Figure 4 A schematic diagram of the heat dissipation mechanism in another embodiment of this application is shown;

[0019] Figure 5 It shows Figure 4 Cross-sectional view of the elastic structure of the heat dissipation mechanism;

[0020] Figure 6 A partial schematic diagram of a heat dissipation mechanism according to an embodiment of this application is shown.

[0021] Explanation of icon numbers:

[0022] 10: Shell 22: Air supply structure

[0023] 11: Ventilation opening 221: First end

[0024] 20: Heat dissipation mechanism 222: Second end

[0025] 21: Air outlet assembly; 22a: Sub-connection section

[0026] 21a: Air vent 22a1: First section

[0027] 211: Outer shell 22a2: Second section

[0028] 211a: Inner wall; 223: Annular hook.

[0029] 211b: Circular slot Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] A head-up display (HUD) uses optical lenses to direct the image generated by the Picture Generation Unit (PGU) onto the windshield, thus projecting important driving information such as speed and navigation onto the windshield in front of the driver, allowing the driver to see important driving information such as speed and navigation without looking down or turning their head.

[0037] Typically, components such as the PGU (Power Probe Unit) and optical lenses are concealed within a protective casing to protect them. However, the PGU generates heat during operation, and this heat accumulates inside the vehicle. To prevent the PGU from operating in high-temperature environments for extended periods, a cooling system is needed. Currently, heat sinks are commonly used, with vents on the protective casing and fans installed at these vents to directly cool the PGU and accelerate heat dissipation.

[0038] However, the temperature of the environment in which a HUD is used is not constant. For example, in low-temperature environments such as winter, the heat dissipation requirement is relatively low, and the fan can meet the cooling needs at normal speed. In high-temperature environments such as summer, the interior temperature of the vehicle rises under strong sunlight, causing the HUD temperature to rise as well. In this case, the heat dissipation requirement is higher, and the fan needs to run at a faster speed. When the temperature exceeds a certain limit, even the fan running at maximum speed may not be able to meet the cooling needs.

[0039] Based on this, this application provides a heat dissipation mechanism. By setting an air supply channel between the fan and the housing in which the PGU is located, and the air supply channel can expand as the fan speed increases, the air supply channel forms a larger flow channel, while the ventilation opening of the housing still maintains a smaller flow channel. In this way, the air speed will increase at the junction of the air supply channel and the housing, thereby increasing the upper limit of the air speed without changing the fan, and thus meeting the heat dissipation requirements.

[0040] See Figure 1 and Figure 2 , Figure 1 A schematic diagram of the heat dissipation mechanism in one embodiment of this application is shown. Figure 2 It showsFigure 1 Another schematic diagram of the heat dissipation mechanism.

[0041] One embodiment of this application provides a heat dissipation mechanism 20 for dissipating heat from a workpiece, the workpiece including a housing 10, the housing 10 having a vent 11. Exemplarily, the workpiece is a PGU (Power Placement Unit) of a head-up display system. In other embodiments, the workpiece may also be other electronic components whose operating state and performance are affected by temperature.

[0042] The heat dissipation mechanism 20 includes an air outlet assembly 21 and an air supply structure 22. The air outlet assembly 21 has an air outlet 21a. One end of the air supply structure 22 is connected to the air outlet 21a, and the other end is connected to the ventilation port 11. The air supply structure 22 has an air supply channel that connects the air outlet 21a and the ventilation port 11. The air supply structure 22 is configured to deform as the air velocity of the air outlet assembly 21 increases, thereby expanding the air supply channel. Based on this, when the air velocity of the air outlet assembly 21 increases, the air supply channel expands, while the air outlet 21a of the air outlet assembly 21 maintains its original shape and size. This causes the air velocity to increase at the junction of the air supply channel and the housing 10, thereby increasing the upper limit of the air velocity without changing the air outlet assembly 21, thus meeting the heat dissipation requirements.

[0043] Optionally, the shape of the air outlet 21a is circular, elliptical, or quadrilateral, and the shape of the ventilation opening 11 is the same as or different from that of the air outlet 21a.

[0044] Optionally, the cross-sectional shape of the air supply structure 22 may be the same as or different from the shape of the air outlet 21a and the vent 11, specifically it can be circular, elliptical, or quadrilateral. When the cross-sectional shape of the air supply structure 22 is the same as the shape of the air outlet 21a and the vent 11, the air supply structure 22 can be directly inserted into the air outlet 21a and the vent 11, or it can be inserted into the air outlet 21a and the vent 11 through a connector. When the cross-sectional shape of the air supply structure 22 is different from the shape of the air outlet 21a and the vent 11, the air supply structure 22 needs to be connected to the air outlet 21a and the vent 11 through a connector. The connector connecting the air supply structure 22 and the air outlet 21a has a cross-sectional shape at one end that is the same as the cross-sectional shape of the air supply structure 22, and a cross-sectional shape at the other end that is the same as the shape of the air outlet 21a. The connector connecting the air supply structure 22 and the vent 11 has a cross-sectional shape at one end that is the same as the cross-sectional shape of the air supply structure 22, and a cross-sectional shape at the other end that is the same as the shape of the vent 11.

[0045] Furthermore, the air supply structure 22 has an initial state and a deformed state. The air supply structure 22 is configured to transition from the initial state to the deformed state when the wind speed of the air outlet assembly 21 exceeds a preset wind speed. For example, in the initial state, the length of the air supply channel is 30 mm, and the cross-sectional diameter or equivalent diameter of the air supply channel is 5 mm; in the deformed state, the length of the air supply channel remains unchanged, while the cross-sectional diameter or equivalent diameter expands by 5% to 30%, for example, by 10%, 20%, or 25%.

[0046] It is understandable that when using cooling devices such as fans to dissipate heat from a workpiece, the higher the ambient temperature, the higher the heat dissipation demand, and the higher the required fan speed, i.e., the higher the airflow speed; while at lower temperatures, the heat dissipation demand is lower, and the required airflow speed is also relatively lower. Based on this, in this embodiment, the air supply structure 22 is configured to change from an initial state to a deformed state when the airflow speed of the air outlet component 21 exceeds a preset airflow speed, thereby increasing the airflow speed through the expansion of the air supply channel when the heat dissipation demand is high.

[0047] Optionally, the air outlet assembly 21 can be adjusted according to the temperature. For example, when the temperature is within a first temperature range, the air outlet assembly 21 is controlled to emit air at a first air speed; when the temperature exceeds the first temperature range, the air outlet assembly 21 is controlled to emit air at a second air speed. For example, before the temperature reaches 45°C, the air outlet assembly 21 is controlled to emit air at the first air speed; when the temperature reaches 45°C, the air outlet assembly 21 is controlled to emit air at the second air speed, and the preset air speed can be set to the second air speed.

[0048] See Figure 1 and Figure 3 , Figure 3 A cross-sectional view of the air supply structure of a heat dissipation mechanism according to an embodiment of this application is shown. In some embodiments, the air supply structure 22 includes a first end 221 connected to an air outlet 21a and a second end 222 connected to a vent 11, wherein at least the first end 221 is constructed as an elastic structure. The first end 221 and the second end 222 may be integrally formed or may be two parts connected together. The material of the first end 221 may be the same as or different from the material of the second end 222. At least the first end 221 being constructed as an elastic structure includes both the first end 221 and the second end 222 being constructed as elastic structures, and the first end 221 being constructed as an elastic structure while the second end 222 is constructed as a non-elastic structure.

[0049] When both the first end 221 and the second end 222 are constructed as elastic structures, the air supply structure 22 as a whole can deform when the wind speed exceeds the preset wind speed, thereby expanding the air supply channel. This results in the flow cross-sectional area of ​​the air supply channel being larger than the flow cross-sectional area of ​​the ventilation opening 11 of the workpiece to be cooled. In this way, the air supplied by the air outlet assembly 21 enters the small flow channel from the large flow channel, and the wind speed increases. Here, the cross-section refers to the interface where the normal is parallel to the extension direction of the air supply channel.

[0050] When the first end 221 is constructed as an elastic structure and the second end 222 is constructed as an inelastic structure, the first end 221 can deform when the wind speed exceeds the preset wind speed, causing the corresponding section of the air supply channel to expand. The second end 222, however, will not deform with changes in wind speed. This results in the cross-sectional area of ​​the air supply channel corresponding to the first end 221 being larger than the cross-sectional area of ​​the air supply channel corresponding to the second end 222 when the wind speed exceeds the preset wind speed. Since the first end 221 is connected to the fan outlet 21a and the second end 222 is connected to the ventilation port 11 of the workpiece to be cooled, meaning the first end 221 is farther from the workpiece and the second end 222 is closer, the air supplied by the air outlet assembly 21 enters the workpiece through the air supply channel from a large flow channel to a small flow channel, resulting in increased wind speed.

[0051] It should be noted that in the initial state of the air supply structure 22, the cross-sectional area of ​​the air supply channel can be greater than or equal to the cross-sectional area of ​​the ventilation opening 11 of the workpiece to be cooled.

[0052] Optionally, the elastic modulus of the elastic structure is 0.002 GPa to 0.008 GPa, which can achieve better deformation and recovery effects.

[0053] Optionally, the wall thickness of the air supply duct is 0.5mm to 1mm, thereby ensuring the deformation capacity of the air supply structure 22 while preventing damage to the air supply structure 22.

[0054] In some embodiments, the elastic structure is made of rubber or silicone, that is, the first end 221 is made of rubber or silicone, or both the first end 221 and the second end 222 are made of rubber or silicone. Thus, the elasticity of the rubber or silicone can be utilized to slowly expand by a certain proportion when the wind speed increases, thereby expanding the air supply channel. Furthermore, the air supply channel can return to its original shape after the wind speed decreases. In other embodiments, an additional structure can be provided on the air supply structure 22 to generate a pushing or pulling force on the air supply structure 22, thereby expanding the air supply channel.

[0055] See Figure 4 and Figure 5 , Figure 4 A schematic diagram of the heat dissipation mechanism in another embodiment of this application is shown. Figure 5It shows Figure 4 A cross-sectional view of the elastic structure of the heat dissipation mechanism. In some embodiments, the longitudinal section of the sidewall of the elastic structure includes a plurality of sub-connecting segments 22a connected sequentially along the extension direction of the air supply channel. Each sub-connecting segment 22a includes a first segment 22a1 and a second segment 22a2 arranged adjacent to each other. The first segment 22a1 of one sub-connecting segment 22a and the second segment 22a2 of the adjacent sub-connecting segment 22a are arranged adjacent to each other. The longitudinal section of the air supply structure 22 is a section parallel to the extension direction of the air supply channel. Based on this, the sidewall of the air supply structure 22 is generally pleated, so that when the wind speed increases, the pleated air supply structure 22 can deform, thereby expanding the air supply channel.

[0056] In some embodiments, the air supply structure 22 includes a first end 221 connected to the air outlet 21a and a second end 222 connected to the ventilation opening 11, wherein at least the first end 221 is constructed as an elastic structure, and the thickness of the sidewall of the first end 221 is greater than the thickness of the sidewall of the second end 222. In an exemplary embodiment, the air supply structure 22 includes a first end 221 connected to the air outlet 21a and a second end 222 connected to the ventilation opening 11, both the first end 221 and the second end 222 are constructed as elastic structures, and the thickness of the sidewall of the first end 221 is greater than the thickness of the sidewall of the second end 222. In another exemplary embodiment, the air supply structure 22 includes a first end 221 connected to the air outlet 21a and a second end 222 connected to the ventilation opening 11, the first end 221 is constructed as an elastic structure, the second end 222 is constructed as a non-elastic structure, and the thickness of the sidewall of the first end 221 is greater than the thickness of the sidewall of the second end 222. In this way, the first end 221 is more easily deformed, thereby making the flow channel farther away from the workpiece to be cooled larger, forming the effect of wind entering the small flow channel from the large flow channel and accelerating it.

[0057] It should be noted that when the air supply structure 22 is constructed as a partially or entirely flexible structure, the air supply structure 22, such as the air supply duct, serves as a connection and ventilation function between the air outlet assembly 21 and the workpiece to be cooled, but the air supply duct does not need to provide support. Specifically, the air outlet assembly 21 and the workpiece to be cooled can be supported by two separate support structures, or they can be supported by the same support structure.

[0058] See Figure 1 and Figure 6 , Figure 6A partial schematic diagram of a heat dissipation mechanism according to one embodiment of this application is shown. In some embodiments, the air outlet assembly 21 includes a housing 211 and a fan (not shown) disposed within the housing 211. An air outlet 21a is disposed on the housing 211, and an annular groove 211b surrounding the air outlet 21a is provided on the inner sidewall 211a of the housing 211. The air supply structure 22 is configured as an air supply pipe, one end of which is provided with an annular hook 223 surrounding it. The air supply pipe can extend into the housing 211 through the air outlet 21a, and the annular hook 223 is engaged in the annular groove 211b. Through the cooperation of the annular groove 211b and the annular hook 223, the air supply pipe can be stably connected to the housing 211. Furthermore, when an air supply pipe made of elastic material is used, the air supply pipe can be sealed to the housing 211 at the air outlet 21a, improving the sealing performance of the air supply channel.

[0059] Based on the same inventive purpose, this application also provides a heat dissipation control method, which uses the heat dissipation mechanism in the above embodiments for heat dissipation.

[0060] Optionally, the heat dissipation control method includes the following steps:

[0061] Obtain the working temperature of the workpiece;

[0062] Compare the operating temperature with the preset temperature;

[0063] If the operating temperature is greater than or equal to the preset temperature, the fan will be controlled to operate at a speed greater than or equal to the preset wind speed.

[0064] If the operating temperature is lower than the preset temperature, the fan will be controlled to operate at a speed lower than the preset wind speed.

[0065] Specifically, the working temperature of the workpiece can be obtained through a temperature sensor.

[0066] The heat dissipation control method provided in this embodiment employs the heat dissipation mechanism described in the previous embodiment. This mechanism features an air supply structure with an air supply channel between the air outlet assembly and the workpiece housing, and the air supply channel expands as the air velocity of the air outlet assembly increases. Based on this, the workpiece temperature is acquired and compared with a preset temperature. When the working temperature is greater than or equal to the preset temperature, the fan is controlled to operate at a speed greater than or equal to the preset air velocity; when the working temperature is less than the preset temperature, the fan is controlled to operate at a speed less than the preset air velocity. Thus, when the working temperature is low, the air supply channel does not expand; when the working temperature is high, the air supply channel expands. Simultaneously, the air outlet of the air outlet assembly maintains its original shape and size, causing the air velocity to increase at the junction of the air supply channel and the housing. This increases the upper limit of the air velocity without altering the air outlet assembly, thereby meeting the heat dissipation requirements.

[0067] For the same purpose, this application also provides a head-up display system, which includes the heat dissipation mechanism in the above embodiments.

[0068] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A heat dissipation mechanism for dissipating heat from an image generation unit of a head-up display system, the image generation unit of the head-up display system comprising a housing having vents, characterized in that, The heat dissipation mechanism includes: An air outlet assembly includes a housing and a fan disposed within the housing. The housing has an air outlet, and the inner sidewall of the housing has an annular groove surrounding the air outlet. The air supply structure is constructed as an air supply duct. One end of the air supply structure is provided with an annular hook around it, and the air supply structure can extend into the housing through the air outlet and make the annular hook engage in the annular groove. The other end of the air supply structure is connected to the ventilation port, and the air supply structure is provided with an air supply channel that connects the air outlet and the ventilation port. The air supply structure is configured to deform as the fan speed increases, thereby expanding the air supply channel; the air supply structure includes a first end connected to the air outlet and a second end connected to the ventilation opening; both the first end and the second end are made of elastic materials, so that both the first end and the second end are elastic structures; the thickness of the sidewall of the first end is greater than the thickness of the sidewall of the second end.

2. The heat dissipation mechanism according to claim 1, characterized in that, The air supply structure has an initial state and a deformed state; The air supply structure is configured to change from an initial state to a deformed state when the wind speed of the air outlet component exceeds a preset wind speed.

3. The heat dissipation mechanism according to claim 2, characterized in that, In the initial state, the cross-sectional area of ​​the air supply channel is greater than or equal to the cross-sectional area of ​​the vent.

4. The heat dissipation mechanism according to claim 1, characterized in that, The elastic structure is made of materials including rubber or silicone.

5. The heat dissipation mechanism according to claim 1, characterized in that, The longitudinal section of the sidewall of the elastic structure includes multiple sub-connecting segments connected sequentially along the extension direction of the air supply channel. Each of the sub-connecting segments includes an adjacent first segment and a second segment, wherein the first segment and the second segment are intersecting. The first segment of one of the sub-connecting segments is arranged adjacent to the second segment of another sub-connecting segment; The longitudinal section of the air supply structure is parallel to the extension direction of the air supply channel.

6. The heat dissipation mechanism according to any one of claims 1-5, characterized in that, The shape of the air outlet is circular, elliptical, or quadrilateral, and the shape of the ventilation opening is the same as that of the air outlet.

7. The heat dissipation mechanism according to any one of claims 1-5, characterized in that, The elastic modulus of the elastic structure is 0.002 GPa to 0.008 GPa.

8. A heat dissipation control method, characterized in that, Heat dissipation is performed using the heat dissipation mechanism as described in any one of claims 1-7.

9. The heat dissipation control method according to claim 8, characterized in that, The method includes: Obtain the operating temperature of the image generation unit of the head-up display system; Compare the operating temperature with the preset temperature; If the operating temperature is greater than or equal to the preset temperature, then the fan is controlled to operate at a wind speed greater than or equal to the preset wind speed. If the operating temperature is lower than the preset temperature, the fan is controlled to operate at a speed lower than the preset wind speed.

10. A head-up display system, characterized in that, Includes the heat dissipation mechanism as described in any one of claims 1-7.

Images