CN111741654A

CN111741654A - Heat abstractor, functional block and passenger cabin host computer

Info

Publication number: CN111741654A
Application number: CN202010604664.4A
Authority: CN
Inventors: 饶威
Original assignee: Shanghai Pateo Electronic Equipment Manufacturing Co Ltd
Current assignee: Shanghai Pateo Electronic Equipment Manufacturing Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2020-10-02

Abstract

The application provides a heat abstractor, functional unit and passenger cabin host computer, heat abstractor includes casing and centrifugal fan. The shell comprises a shell body and a plurality of first fins. The plurality of first fins are arranged at intervals to form a first air duct. The first fin is arranged on one side of the shell body in a protruding mode. The edge of the fan blade of the centrifugal fan and the first fin form a first gap. The first gap is communicated with the first air duct. The heat sink can improve heat dissipation efficiency and prevent or attenuate noise.

Description

Heat abstractor, functional block and passenger cabin host computer

Technical Field

The application relates to the field of heat dissipation structures, in particular to a heat dissipation device, a functional assembly and a cabin host.

Background

One of the mainstream development directions of the vehicle-mounted host is the intelligent cabin. Along with the acceleration of the integration of the intelligent system of the automobile, the calculation power borne by the host of the intelligent cabin is multiplied. The power consumption of the work host of the intelligent cabin is greatly increased due to the sudden increase of computing power. The problem of heating power consumption solution of the vehicle-mounted host is firstly brought to the forefront. In the host of the intelligent cabin, a Microprocessor (MPU) and a Power Amplifier (PA) belong to two devices with large main heating Power, and the stable operation of the devices directly influences the realization of the main functions of the host of the intelligent cabin. In the related art, the air-cooled vehicle-mounted host with low power consumption adopts an axial fan heat dissipation scheme, however, the heat dissipation efficiency is not high, and the characteristics of large air volume and low static pressure of the axial fan lead to the fact that the traditional vehicle-mounted host is not silent. Under high load work, the rotating speed of the axial flow fan is increased, wind noise is increased, and the riding experience of the intelligent automobile is poor directly, so that the high-grade feeling of the intelligent automobile is reduced.

Disclosure of Invention

The application provides a heat abstractor, functional unit and passenger cabin host computer, heat abstractor can improve the radiating efficiency and avoid or weaken the noise.

The application provides a heat dissipation device, heat dissipation device includes casing and centrifugal fan. The shell comprises a shell body and a plurality of first fins. The plurality of first fins are arranged at intervals to form a first air duct. The first fin is arranged on one side of the shell body in a protruding mode. The edge of the fan blade of the centrifugal fan and the first fin form a first gap. The first gap is communicated with the first air duct.

The application also provides a functional assembly, the functional assembly includes functional device and above-mentioned heat abstractor, the functional device is connected in heat abstractor.

The application also provides a cabin host computer, the cabin host computer includes the antenna module and above-mentioned functional unit, and the antenna module that locates connects in functional unit.

The heat dissipation device is provided with the plurality of first fins which are arranged at intervals to form the first air channel, the first fins are arranged on one side of the shell body in a protruding mode, and the protruding first fins can increase the overall heat dissipation area of the heat dissipation device, so that the heat dissipation effect is improved; meanwhile, the first fins and the edges of the fan blades of the centrifugal fan are arranged at intervals to form first gaps, and due to the first gaps, on one hand, air can enter different first air channels more uniformly, so that the heat dissipation effect is better; on the other hand, the rotating centrifugal fan and the first fin can avoid forming a wind cutting phenomenon or weakening the wind cutting phenomenon, so that noise caused by the wind cutting phenomenon can be avoided or weakened; moreover, it can be understood that the air thrown out by the fan blades of the centrifugal fan has a certain speed, and the air can rapidly flow through the first air channel, so that forced convection heat exchange is formed, and compared with natural convection heat exchange, the heat exchange effect brought by forced convection heat exchange is better, namely, the heat on the first fins is more easily dissipated into the air, so that the heat exchange efficiency can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application.

Fig. 3 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application.

Fig. 4 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application.

Fig. 5 is a schematic structural diagram of a housing according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a functional component according to an embodiment of the present application.

Fig. 7 is a partial schematic view of the functional element shown in fig. 6 in region a.

Fig. 8 is a partial schematic view of the functional element shown in fig. 6 in the region B.

Fig. 9 is a schematic structural diagram of a cabin host according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments, in case at least two embodiments are combined together without contradiction.

Please refer to fig. 1 and fig. 2. Fig. 1 is a schematic structural diagram of a heat dissipation device according to an embodiment of the present application. Fig. 2 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application. The present application provides a heat sink 1, the heat sink 1 includes a housing 10 and a centrifugal fan 20. The housing 10 includes a housing body 110 and a plurality of first fins 120. The plurality of first fins 120 are spaced apart to form a first air passage F1. The first fins 120 are protruded from one side of the housing body 110. The edge of the centrifugal fan 20 and the first fin 120 form a first gap C1. The first gap C1 communicates with the first air duct F1.

The first air duct F1 is a gap space between different first fins 120, and in some cases, the first air duct F1 further includes a gap space formed by the first fins 120 and the housing body 110.

It should be noted that the heat dissipation apparatus 1 can be applied to, but not limited to, heat dissipation of vehicle-mounted devices (such as heat dissipation of a vehicle-mounted host, heat dissipation of a vehicle-mounted navigator, etc.), heat dissipation of computers, and the like. The housing 10 may be made of, but not limited to, an aluminum alloy material through a die-casting process, wherein the aluminum alloy material has high thermal conductivity and is beneficial to light weight, and the die-casting process is suitable for large-scale industrial production. The centrifugal fan 20 may be, but is not limited to, a 6010 size.

Specifically, the heat sink 1 includes a casing 10 and a centrifugal fan 20. The case 10 may accommodate a heat generating device, which generates heat and accumulates the heat when the heat generating device is continuously operated, and accordingly, the centrifugal fan 20 serves to increase a flow rate of air inside and outside the case 10 and to discharge the heat of the case 10 to the external environment. The gas may be air, and may of course be other gases, in other words, the heat dissipation device 1 may be applied to an air environment, but it should be noted that the following embodiments are all exemplified by air, and should not be construed as limiting the present application.

The centrifugal fan 20 may include a fan cover 210 and a fan main body 220. The fan body 220 is connected to the fan cover 210 and can rotate relative to the fan cover 210, and the fan body 220 is a portion including fan blades. The fan cover 210 covers the first heat dissipation fins of the cover portion and covers the second heat dissipation fins of the cover portion. Optionally, the centrifugal fan 20 is non-detachably connected to the fan cover 210. Optionally, the fan cover 210 is detachably connected to the housing 10 (e.g., by bolts).

The housing 10 includes a housing body 110 and first fins 120. The first fins 120 are connected to the housing body 110 and protrude from the housing body 110. The first fins 120 are spaced apart to form a first air passage F1. Part of heat on the housing body 110 can be conducted to the first fins 120, and the air contacts with the wall surfaces of the first fins 120 in the process of passing through the first air channel F1, so that the heat on the first fins 120 is taken away, and heat dissipation is realized. It can be understood that the first fins 120 in the protruding shape can increase the contact area with the outside air, that is, the heat exchange area between the casing 10 and the air is increased as a whole, and thus the heat on the casing 10 can be more favorably transferred to the air.

It should be noted that the number of the first fins 120 is plural, and the plural means that the number is greater than or equal to two, for example, the number is 2, 3, 7, 10, 15, and the like. The dimensions of each of the first fins 120 may be the same or different.

The first fins 120 and the centrifugal fan 20 are disposed on the same side of the housing body 110, and the first fins 120 and the centrifugal fan 20 are disposed at intervals, so that a first gap C1 is formed between the edge of the fan blade of the centrifugal fan 20 and the first fins 120, and the first gap C1 is communicated with the first air passage F1.

For air passing through the centrifugal fan 20, the direction of entry of the air is perpendicular or approximately perpendicular to the direction of discharge. Specifically, air enters from the axial direction of the centrifugal fan 20 and then is discharged from the circumferential direction of the centrifugal fan 20, or air is thrown off from the blades of the centrifugal fan 20 and then enters the first clearance C1. The existence of the first gap C1 can make the air enter different first air channels F1 more uniformly on one hand, so that the heat dissipation effect can be better; on the other hand, the rotating centrifugal fan 20 and the first fins 120 can avoid or weaken the wind-cutting phenomenon, so that the noise caused by the wind-cutting phenomenon can be avoided or weakened.

Moreover, it can be understood that the air thrown out by the fan blades of the centrifugal fan 20 has a certain speed, and the air can rapidly flow through the first air duct F1, so as to form forced convection heat transfer, and compared with natural convection heat transfer, the heat transfer effect caused by forced convection heat transfer is better, that is, the heat on the first fins 120 is more easily dissipated into the air, so as to improve the heat transfer efficiency.

The centrifugal fan 20 has a small air volume and a high static pressure, compared to the axial fan, and the characteristics, in combination with the first clearance C1, can discharge heat from the inside of the casing 10 and ensure silence or noise reduction. Compared with the centrifugal fan 20, the axial fan has the characteristics of large air volume and low static pressure, the large air volume can generate large noise, the axial fan is usually embedded in the side wall of the casing 10 to discharge the high-temperature air in the casing 10 out of the casing 10, in the case that parts are closely arranged in the casing 10, the space in the casing 10 is narrow, meanwhile, due to the characteristic of low static pressure of the axial fan, the axial fan is likely not to discharge the high-temperature air in the casing 10 out of the casing 10, and relatively speaking, the centrifugal fan 20 with high static pressure characteristic is not easy to generate the situation.

To sum up, the heat dissipation device 1 provided by the present application is provided with a plurality of first fins 120, the plurality of first fins 120 are arranged at intervals to form a first air duct F1, the first fins 120 are convexly arranged on one side of the housing body 110, and the convexly arranged first fins 120 can increase the overall heat dissipation area of the heat dissipation device 1, thereby improving the heat dissipation effect; meanwhile, the first fins 120 and the edges of the fan blades of the centrifugal fan 20 are arranged at intervals to form a first gap C1, and the existence of the first gap C1 can enable air to enter different first air channels F1 more uniformly on one hand, so that the heat dissipation effect is better; on the other hand, the rotating centrifugal fan 20 and the first fins 120 can avoid the formation of the wind cutting phenomenon or weaken the wind cutting phenomenon, so that the noise caused by the wind cutting phenomenon can be avoided or weakened; moreover, it can be understood that the air thrown out by the fan blades of the centrifugal fan 20 has a certain speed, and the air can rapidly flow through the first air duct F1, so as to form forced convection heat transfer, and compared with natural convection heat transfer, the heat transfer effect caused by forced convection heat transfer is better, that is, the heat on the first fins 120 is more easily dissipated into the air, so as to improve the heat transfer efficiency.

Further, referring to the structure shown in fig. 1 and fig. 2, in one embodiment, the extending direction of the first fins 120 is the same as the arrangement direction of the first fins 120 and the centrifugal fan 20. In other words, the extending direction of the first air duct F1 is the same as the arrangement direction of the first fins 120 and the centrifugal fan 20, or the length direction of the first fins 120 is the same as the arrangement direction of the first fins 120 and the centrifugal fan 20.

In another embodiment, the extending direction of the first fins 120 is not consistent with the arrangement direction of the first fins 120 and the centrifugal fan 20. For example, the first fins 120 are obliquely arranged relative to the centrifugal fan 20, that is, the extending direction of the first fins 120 forms an included angle with the arrangement direction of the first fins 120 and the centrifugal fan 20.

Further, please refer to fig. 1 and fig. 2. The housing 10 further includes a plurality of second fins 130. The plurality of second fins 130 are spaced apart to form a second air passage F2. The second fins 130 are protruded from one side of the housing body 110, and form a second gap C2 with the edge of the fan blade of the centrifugal fan 20. The second gap C2 is communicated with the second air duct F2.

The second air duct F2 is a gap space between different second fins 130, and in some cases, the second air duct F2 further includes a gap space formed by the second fins 130 and the housing body 110.

The second fins 130 and the first fins 120 are disposed on the same side of the housing body 110. Part of heat on the housing body 110 can be conducted to the second fins 130, and the air contacts with the wall surfaces of the second fins 130 in the process of passing through the second air duct F2, so that the heat on the second fins 130 is taken away, and heat dissipation is realized.

It should be noted that the number of the second fins 130 is plural, and the plural means that the number is greater than or equal to two, for example, the number is 2, 3, 7, 10, 15, and the like. The dimensions of each of the second fins 130 may be the same or different. In some embodiments, the second fins 130 may also be symmetrical to the first fins 120.

The second fins 130 may be disposed on a side of the centrifugal fan 20 away from the first fins 120, and may also be disposed on other sides of the centrifugal fan 20, which is not described in detail herein, and the disclosure is only illustrated by being disposed on a side of the centrifugal fan 20 away from the first fins 120.

Specifically, the plurality of second fins 130 are arranged at intervals to form a second air duct F2, the second fins 130 are protruded at one side of the housing body 110, and the protruded second fins 130 can increase the total heat dissipation area of the heat dissipation device 1, thereby improving the heat dissipation effect; meanwhile, the second fins 130 and the edges of the fan blades of the centrifugal fan 20 are arranged at intervals to form a second gap C2, and the existence of the second gap C2 can enable air to enter different second air channels F2 more uniformly on one hand, so that the heat dissipation effect is better; on the other hand, the rotating centrifugal fan 20 and the second fins 130 can avoid the formation of the wind cutting phenomenon or weaken the wind cutting phenomenon, so that the noise caused by the wind cutting phenomenon can be avoided or weakened; moreover, it can be understood that the air thrown out by the fan blades of the centrifugal fan 20 has a certain speed, and the air can rapidly flow through the second air duct F2, so as to form forced convection heat transfer, and compared with natural convection heat transfer, the heat transfer effect caused by forced convection heat transfer is better, that is, the heat on the second fins 130 is more easily dissipated into the air, so as to improve the heat transfer efficiency.

It can be understood that the combination of the first fins 120 and the second fins 130 can improve the heat dissipation efficiency of the heat dissipation device 1, and can avoid or reduce the noise caused by the wind-cutting phenomenon.

Further, referring to the structure shown in fig. 1 and fig. 2, in an embodiment, the extending direction of the second fins 130 is the same as the arrangement direction of the second fins 130 and the centrifugal fan 20. In other words, the extending direction of the second air duct F2 is the same as the arrangement direction of the second fins 130 and the centrifugal fan 20, or the length direction of the second fins 130 is the same as the arrangement direction of the second fins 130 and the centrifugal fan 20. Optionally, the second fins 130 are parallel to the extending direction of the first fins 120.

In another embodiment, the extending direction of the second fins 130 is not consistent with the arrangement direction of the second fins 130 and the centrifugal fan 20. For example, the second fins 130 are obliquely arranged relative to the centrifugal fan 20, that is, the extending direction of the second fins 130 forms an included angle with the arrangement direction of the second fins 130 and the centrifugal fan 20.

Further, please refer to fig. 1 and fig. 3. Fig. 3 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application. The housing body 110 includes a top plate 111 and a side plate 112. The top plate 111 is used for carrying the first fins 120 and the second fins 130. An air outlet K2 is formed in the top plate 111. The centrifugal fan 20 is disposed corresponding to the air outlet K2, that is, the air in the housing body 110 can reach the centrifugal fan 20 through the air outlet K2. One end of the side plate 112 is connected to the top plate 111 corresponding to the first fin 120, in other words, heat on the side plate 112 can pass through the top plate 111 and be conducted to the first fin 120.

Optionally, please further refer to fig. 4. Fig. 4 is a schematic structural diagram of a heat dissipation device according to another embodiment of the present application. The heat sink 1 may further include a bottom cover 30. The bottom cover 30 is connected to an end of the side plate 112 facing away from the top plate 111. Alternatively, the bottom cover 30 is detachably coupled to the housing 10. An air inlet hole K1 can be formed in the bottom cover 30, and the air inlet hole K1 is communicated with the air outlet hole K2. In other embodiments, the air inlet holes K1 can be opened on other sides of the housing body 110, and the air inlet holes K1 are opened on the side plate 112 for illustration. When the centrifugal fan 20 rotates, air enters the housing 10 through the air inlet hole K1, then reaches the centrifugal fan 20 through the air outlet hole K2 on the side plate 112, and then is thrown out by the fan blades of the centrifugal fan 20. The number of the air inlet holes K1 on the bottom cover 30 may be more than or equal to two, and the number may be 5, 10, 13, 20, 31, etc. The shape of the air inlet hole K1 can be round, square, polygon, etc.

Further, please refer to fig. 3 and 5. Fig. 5 is a schematic structural diagram of a housing according to an embodiment of the present application. A first convex hull 1121 is formed on the inner side wall of the side plate 112, and the first convex hull 1121 is connected to the top plate 111 corresponding to the first fin 120. The first convex hulls 1121 protrude from the inner side wall of the side plate 112.

The first convex hull 1121 is used to connect functional components, such as a Power Amplifier (PA), and the Power Amplifier is a device with large heating Power, and when the device works for a long time, if the heat cannot be dissipated to the air in time, the temperature in the housing 10 will continuously rise, and the device such as the Power Amplifier may not work normally due to high temperature. It can be understood that, if the power amplifier is disposed on the first convex hull 1121, the heat of the power amplifier can be conducted to the first convex hull 1121, and since the first convex hull 1121 is further connected to the top plate 111 corresponding to the first fins 120, the heat of the first convex hull 1121 can be quickly conducted to the first fins 120, and finally the heat is dissipated to the air, that is, the arrangement of the first convex hull 1121 can shorten the heat transfer channel between the first convex hull 1121 and the first fins 120, and on the other hand, the first convex hull 1121 can play a role in guiding the heat to the first fins 120, so as to improve the heat dissipation efficiency.

Further, please refer to fig. 3 and 5. The first convex hull 1121 is located along a direction (i.e., a Y-axis direction shown in fig. 5) from one end of the side plate 112 away from the first fins 120 to one end of the side plate 112 close to the first fins 120, and the size of the first convex hull 1121 in the direction of the interval arrangement of the plurality of first fins 120 gradually increases, and the direction of the interval arrangement of the plurality of first fins 120 refers to the arrangement direction (i.e., an X-axis direction shown in fig. 5) of the plurality of first fins 120.

It can be understood that the arrangement of the first convex hulls 1121 is beneficial to the heat on the first convex hulls 1121 being dispersed along the direction of the interval arrangement of the plurality of first fins 120, so that the heat can be correspondingly conducted to different first fins 120, thereby improving the heat dissipation efficiency.

Optionally, the first convex hull 1121 is in an inverted trapezoid shape in the Y-axis direction shown in fig. 5, and may also have other shapes, which are not described herein again.

Further, please continue to refer to fig. 5. The junction of the first convex hull 1121 and the top plate 111 may be chamfered. Optionally, the chamfer is a chamfered angle, and in other embodiments, the chamfer may also be a rounded angle. The purpose of the chamfering is to enlarge a thermal path from the first convex hull 1121 to the top plate 111, and increase a contact area between the first convex hull 1121 and the top plate 111 to reduce thermal resistance, so that heat on the first convex hull 1121 can be efficiently conducted to the first fins 120 for heat dissipation.

Further, please refer to fig. 3 and 5. The inner sidewall of the top plate 111 may be formed with a second convex hull 1111. The second convex hull 1111 is disposed corresponding to the second fin 130.

The second convex hull 1111 is used to connect functional devices, such as a Microprocessor (MPU), etc., where the MPU is a device with high heat generation power, and if the MPU cannot radiate heat to the air in time, the temperature in the housing 10 will continuously rise during a long-time operation, and the MPU devices may not work normally due to high temperature. It can be understood that, if the MPU is disposed on the second convex hull 1111, the heat on the MPU can be conducted to the second convex hull 1111, and since the second convex hull 1111 is also disposed corresponding to the second fin 130, the heat on the second convex hull 1111 can be quickly conducted to the second fin 130, and finally the heat is dissipated into the air, that is, the arrangement of the second convex hull 1111, on the one hand, can shorten the heat transfer channel between the second convex hull 1111 and the second fin 130, and on the other hand, the second convex hull 1111 can play a role in guiding so as to quickly guide the heat to the second fin 130, thereby improving the heat dissipation efficiency.

Further, please refer to fig. 3 and 5. The second convex hulls 1111 extend along the spacing direction of the plurality of second fins 130, and the spacing direction of the second fins 130 is the X-axis direction shown in fig. 5. It can be understood that, by doing so, the heat on the second convex hull 1111 can be conducted to more second fins 130, thereby improving the heat dissipation efficiency.

The shape of the second convex hull 1111 may be, but is not limited to, a square, a rectangle, etc.

Optionally, the size of the second convex hull 1111 in the direction of the interval arrangement of the plurality of second fins 130 is larger than the size of the second convex hull 1111 in other directions.

Further, please refer to fig. 6. Fig. 6 is a schematic structural diagram of a functional component according to an embodiment of the present application. The present application further provides a functional assembly 5, wherein the functional assembly 5 includes a functional device 2 and the heat dissipation apparatus 1 described in any of the above embodiments. The functional device 2 is connected to the heat sink 1.

Please refer to the drawings and the corresponding description of the foregoing embodiments for the heat dissipation apparatus 1.

The functional device 2 may be, but not limited to, the Microprocessor (MPU), Power Amplifier (PA), and the like. Accordingly, the functional component 5 may be, but is not limited to, a component of a vehicle-mounted device (such as a vehicle-mounted host, a vehicle-mounted navigator), a computer, and the like.

Further, please refer to fig. 6 to 8. Fig. 7 is a partial schematic view of the functional element shown in fig. 6 in region a. Fig. 8 is a partial schematic view of the functional element shown in fig. 6 in the region B. The heat sink 1 includes a housing 10. The housing 10 includes a first fin 120 and a second fin 130. The functional device 2 comprises a first functional part 21 and a second functional part 22. The first functional element 21 is closer to the first fins 120 than the second functional element 22, in other words, the heat of the first functional element 21 can be dissipated to the air through the first fins 120. The second functional element 22 is closer to the second fins 130 than the first functional element 21, in other words, the heat of the second functional element 22 can be dissipated to the air through the second fins 130.

The first and

second functions

21, 22 are both connected to the housing 10. The first and

second functions

21 and 22 generate heat during operation and may radiate the heat to the air through the case 10.

Please refer to the drawings and the corresponding descriptions in the previous embodiments for the housing 10, the first fins 120, and the second fins 130.

The first functional element 21 may be, but not limited to, a Power Amplifier (PA) or the like. The second function 22 may be, but is not limited to, a Microprocessor (MPU) or the like.

Further, please refer to fig. 6 to 8. A first convex hull 1121 and a second convex hull 1111 are formed on the inner side wall of the housing 10. The first convex hull 1121 is closer to the first fin 120 than the second convex hull 1111. The second convex hull 1111 is closer to the second fins 130 than the first convex hull 1121. The first functional element 21 is disposed on the first convex hull 1121. The second functional element 22 is disposed on the second convex hull 1111.

The first convex hulls 1121 are closer to the first fins 120 than the second convex hulls 1111, in other words, the heat generated by the first functional component 21 can be conducted to the first fins 120 through the first convex hulls 1121, and the heat can be dissipated into the air.

The second convex hulls 1111 are closer to the second fins 130 than the first convex hulls 1121, in other words, the heat generated by the second functional element 22 can be conducted to the second fins 130 through the second convex hulls 1111 and dissipated into the air.

Please refer to the drawings and the corresponding descriptions in the previous embodiments for the first convex hull 1121 and the second convex hull 1111.

Further, please refer to fig. 6 to 8. The functional component 5 may further comprise a first circuit board 3 and a second circuit board 4. The first circuit board 3 is disposed in the heat dissipation device 1 and connected to the first functional component 21. The second circuit board 4 is disposed in the heat dissipation device 1 and connected to the second functional element 22. The first circuit board 3 and the second circuit board 4 are arranged at intervals.

Further, please refer to fig. 9. Fig. 9 is a schematic structural diagram of a cabin host according to an embodiment of the present application. The application also provides a cabin host 7, wherein the cabin host 7 comprises an antenna module 6 and the functional component 5 as described in any of the embodiments above. The antenna module 6 is connected to the functional component 5.

The functional component 5 refers to the drawings in the previous embodiments and the corresponding descriptions.

Wherein the cabin host machine 7 is for a vehicle. The size of the cabin host 7 may be, but is not limited to, 1 DIN. It can be understood that, at present, automobiles integrate a great number of peripheral modules, and the most obvious updates are that the display screen is larger and larger, and the information acquisition cameras are more and more. These peripheral devices greatly occupy the layout space in the vehicle. Therefore, the size of the cabin main unit 7 needs to be reduced as much as possible, and more layout space is reserved for the interior of the automobile. The 1DIN inner cabin host 7 with smaller size is most matched with the space in the vehicle, and the arrangement is flexible; and the universal matching performance of the platform vehicle type is better. The small size requirement of the cabin host 7 increases the difficulty of solving the heating power consumption of the vehicle machine.

Although embodiments of the present application have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present application, and that such changes and modifications are also to be considered as within the scope of the present application.

Claims

1. A heat dissipating device, comprising:

a housing, the housing comprising:

a housing body; and

the first fins are arranged at intervals to form a first air channel, and the first fins are convexly arranged on one side of the shell body; and

the edge of the fan blade of the centrifugal fan and the first fin form a first gap, and the first gap is communicated with the first air channel.

2. The heat dissipating device of claim 1, wherein the first fins extend in a direction that is aligned with the first fins and the centrifugal fan.

3. The heat dissipating device of claim 2, wherein said housing further comprises:

the second fins are arranged at intervals to form a second air channel, the second fins are arranged on one side of the shell body in a protruding mode, a second gap is formed between the second fins and the edge of the fan blade of the centrifugal fan, and the second gap is communicated with the second air channel.

4. The heat dissipating device of claim 3, wherein the second fins extend in a direction that is aligned with the second fins and the centrifugal fan.

5. The heat dissipating device of any of claims 1-4, wherein the housing body comprises:

the top plate is provided with an air outlet hole, the centrifugal fan is arranged corresponding to the air outlet hole, and the first fins are borne on the top plate;

one end of the side plate is connected to the top plate corresponding to the first fin.

6. The heat sink of claim 5, wherein a first convex hull is formed on an inner sidewall of the side plate, and the first convex hull is connected to the top plate corresponding to the first fin.

7. The heat dissipating device of claim 6, wherein the first convex hull is gradually increased in size along a direction from an end of the side plate away from the first fins toward an end of the side plate close to the first fins.

8. The heat dissipating device of claim 7, wherein a junction of said first convex hull and said top plate is chamfered.

9. The heat dissipating device of claim 5, wherein said housing comprises second fins, said second fins being carried by said top plate, a second convex hull being formed on an inner sidewall of said top plate, said second convex hull being disposed in correspondence with said second fins.

10. The heat dissipating device of claim 9, wherein said second convex hulls are disposed to extend in a direction of spacing of said second fins.

11. Functional assembly, characterized in that the functional assembly comprises a functional device and a heat sink according to any of claims 1-10, the functional device being connected to the heat sink.

12. The functional assembly of claim 11, wherein the heat sink comprises a housing including first fins and second fins, and wherein the functional device includes first functional elements and second functional elements, the first functional elements being closer to the first fins than the second functional elements, and the second functional elements being closer to the second fins than the first functional elements.

13. The functional assembly according to claim 12, wherein a first convex hull and a second convex hull are formed on an inner sidewall of the housing, the first convex hull is more adjacent to the first fin than the second convex hull, the second convex hull is more adjacent to the second fin than the first convex hull, the first functional member is disposed on the first convex hull, and the second functional member is disposed on the second convex hull.

14. A cabin host computer, characterized in that the cabin host computer comprises an antenna module and a functional module according to any one of claims 11-13, the antenna module being connected to the functional module.