Multimedia host
By opening a ventilation window on the housing of the vehicle multimedia host and setting a foreign body isolation plate, the contact area between the heat dissipation fins and the outside air of the shell is increased, and the problem of low heat dissipation efficiency in the prior art is solved, achieving more efficient heat dissipation effect and cost reduction.
Patent Information
- Application Number
- CN202421545175.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Due to the lack of air convection, the heat exchange efficiency of the heat sink is insufficient, resulting in a high chip temperature. The common solution is to increase the volume of the heat sink, but this will increase the space share and production costs.
A multimedia host is designed, including a shell, a heating element, a heat dissipation fin and a foreign body isolation plate. By opening a ventilation window on the shell, a foreign body isolation plate is set between the intervals of the heat dissipation fins, and the foreign body isolation plate is in contact with the air outside the shell, increasing the contact area between the heat dissipation fins and the air outside the shell, and improving the heat dissipation efficiency.
Without increasing the volume of the heat dissipation fin, the heat dissipation efficiency is improved, the chip temperature is reduced, and the production cost is reduced.
Smart Images
Figure CN222784851U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electronic equipment, in particular to a multimedia host. Background Art
[0002] The in-vehicle multimedia host is the most common multimedia device in motor vehicles that provides audio and video entertainment for passengers. Figure 1 As shown in the figure, the in-vehicle multimedia host of a certain automobile product includes a host body a, antenna device b and heat sink c, and a partition d is arranged between the heat sink c to prevent foreign objects from falling into the host body a. The partition d and the surface of the host body a are on the same plane, which not only blocks the interval between the heat sink c, but also blocks the gap between the heat sink c and the host body a. Due to the lack of air convection in this design, the heat exchange efficiency of the heat sink c is not enough. After the heat is dissipated by the heat sink c, the temperature of the chip in the host body a is still high. The common solution is to increase the volume of the heat sink c.
[0003] However, increasing the volume of the heat sink c will not only increase the space occupied by the vehicle multimedia host, but also increase the production cost. Utility Model Content
[0004] The utility model provides a multimedia host, which aims to solve the problem of cost increase caused by increasing the volume of the heat sink to improve the heat dissipation efficiency in the prior art.
[0005] The utility model discloses a multimedia host, comprising a shell, a heating element, heat dissipation fins and a foreign matter isolation plate; the heating element is arranged in the shell, the heat dissipation fins are also arranged in the shell and are arranged opposite to the heating element; the heat dissipation fins include a plurality of second heat dissipation fins arranged at intervals; the shell comprises a first end plate and a second end plate arranged opposite to each other, a ventilation window is provided at a position opposite to the gap space between the first end plate and the second heat dissipation fins, the foreign matter isolation plate is arranged between the intervals of the second heat dissipation fins, and the distance between the foreign matter isolation plate and the second end plate is smaller than the distance between the first end plate and the second end plate.
[0006] In some embodiments, the multimedia host further includes an antenna, which is mounted on the first end plate, the top of the second heat sink is lower than the plane where the ventilation window is located, and the antenna covers a portion of the second heat sink.
[0007] In some embodiments, a gap is provided between the top of the portion of the second heat sink covered by the antenna and the bottom surface of the antenna.
[0008] In some embodiments, the antenna includes at least one of a 2G antenna, a 3G antenna, a 4G antenna, a 5G antenna, a WIFI antenna, and a GPS antenna.
[0009] In some embodiments, the shell also includes a third end plate and an inner partition plate that are arranged opposite to each other, and the inner partition plate completely covers one side of the gap space between the second heat sinks, the top and bottom ends of the third end plate are respectively connected to the first end plate and the second end plate, the top end of the inner partition plate is connected to the first end plate, the side of the heat sink fin close to the third end plate is tightly attached to the third end plate, and the side of the heat sink fin away from the third end plate is tightly attached to the inner partition plate, so that the second heat sink is arranged between the inner partition plate and the third end plate.
[0010] In some embodiments, the inner partition plate is provided with a first convection hole, and the third end plate is provided with a second convection hole matching with the first convection hole.
[0011] In some embodiments, the shell further includes an end cover, which is disposed on the outer side of the third end plate, and is provided with a third convection hole that matches the second convection hole.
[0012] In some embodiments, the heat sink fins also include a first heat sink parallel to the first end plate, and the second heat sinks are spaced apart on the first heat sink along the length direction of the first heat sink, and the top ends of the two second heat sinks adjacent to the two ends of the first heat sink are respectively connected to the first end plate.
[0013] In some embodiments, the heat generating element is disposed below the first heat sink, and the first heat sink is in close contact with the heat generating element.
[0014] In some embodiments, the second heat sink is perpendicular to the plane where the ventilation window is located, and the size of the ventilation window is matched with the size of the first heat sink.
[0015] The above-mentioned multimedia host disclosed in the utility model includes a shell, a heating element, a heat sink fin and a foreign matter isolation plate; the heating element is arranged in the shell, the heat sink fin is also arranged in the shell and arranged opposite to the heating element; the heat sink fin includes a plurality of second heat sinks arranged at intervals; the shell includes a first end plate and a second end plate arranged opposite to each other, a ventilation window is provided at a position opposite to the gap space between the first end plate and the second heat sink, the foreign matter isolation plate is provided between the intervals of the second heat sink, and the distance between the foreign matter isolation plate and the second end plate is smaller than the distance between the first end plate and the second end plate. By providing a ventilation window at a position opposite to the interval of the second heat sink on the first end plate, the foreign matter isolation plate is provided between the intervals of the second heat sink, and the distance between the foreign matter isolation plate and the second end plate is smaller than the distance between the first end plate and the second end plate, the contact area between the second heat sink and the air outside the shell is increased without increasing the volume of the heat sink fins, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 The overall structure diagram of the vehicle multimedia host in the background technology;
[0018] Figure 2 The overall structure diagram of the multimedia host provided by the embodiment of the utility model;
[0019] Figure 3 Another perspective overall structural diagram of the multimedia host provided by the embodiment of the utility model;
[0020] Figure 4 An exploded schematic diagram of a multimedia host provided by an embodiment of the utility model.
[0021] Figure numbers: shell 1; first end plate 11; second end plate 12; third end plate 13; fourth end plate 14; end cover 15; inner partition 16; first convection hole 17; second convection hole 18; third convection hole 19; PCB board 2; heating element 3; heat dissipation fin 4; first heat sink 41; second heat sink 42; main body 421; connecting part 422; ventilation window 5; antenna 6. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.
[0024] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.
[0025] It should be further understood that the terms “and, or” used in the present specification and the appended claims refer to any combination and all possible combinations of one or more of the associated listed items, and include these combinations.
[0026] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
[0027] The utility model discloses a multimedia host for a vehicle-mounted multimedia system. Figure 2 , Figure 3 , Figure 4As shown, the multimedia host may include a housing 1, a PCB board 2 (Printed Circuit Board), a heating element 3, a heat sink fin 4, a ventilation window 5, a foreign body isolation plate (not shown in the figure) and an antenna 6. The housing 1 is the main part of the multimedia host, and a cavity is formed inside the housing 1 for assembling other parts or components. The PCB board 2 is arranged at the bottom of the cavity in the housing 1, and it serves as a provider of electrical connections between the electronic components of the multimedia host. The heating element 3 is a chip mounted on the PCB board 2, which serves as a control element of the multimedia host. During the working process of the multimedia host, such as the process of the user using the multimedia host to play audio and video files, the chip will emit heat due to high load work. The heat sink fin 4 is also arranged in the housing 1, and is arranged relative to the chip, for dissipating heat from the chip to reduce the temperature of the chip, to ensure the safety and normal operation of the multimedia host. The material of the heat sink fin 4 can be made of copper or aluminum, which has good thermal conductivity and is easy to process, and the heat sink fin 4 can be close to the heating element 3 when it is arranged, so that it can more effectively exchange heat with the heating element 3, thereby improving the heat dissipation efficiency. The ventilation window 5 is arranged on the housing 1 for ventilation and heat dissipation. The ventilation window 5 can be specifically arranged at a position opposite to the heat sink fins 4, so that the heat sink fins 4 can contact the environment outside the shell 1, so that the heat transferred from the heating element 3 to the heat sink fins 4 can be dissipated to the environment outside the shell 1; and the ventilation window 5 can also allow the air outside the shell 1 to flow through the heat sink fins 4, and the airflow takes away the heat on the heat sink fins 4 through the heat exchange between the heat sink fins 4 and the airflow, thereby improving the heat dissipation efficiency of the heat sink fins 4. A foreign matter isolation plate is arranged on the side of the ventilation window 5 close to the inside of the shell 1, and is used to prevent foreign matter from entering the inside of the shell 1 through the ventilation window 5 and affecting the performance of the multimedia host. The antenna 6 is arranged on the shell 1, specifically on the outside side of the shell 1, and is used to receive and send electromagnetic waves. The antenna 6 and the ventilation window 5 are arranged on the same end plate of the shell 1, and the antenna 6 covers part of the ventilation window 5. The antenna 6 may include at least one of a 2G antenna, a 3G antenna, a 4G antenna, a 5G antenna, a WIFI antenna, and a GPS antenna.
[0028] In some embodiments, the housing 1 may be arranged in a rectangular shape as a whole, and may include a first end plate 11, a second end plate 12, a third end plate 13, a fourth end plate 14, an end cover 15, an inner partition 16, a plurality of first convection holes 17, a plurality of second convection holes 18, and a plurality of third convection holes 19. The first end plate 11 and the second end plate 12 are arranged opposite to each other, and the third end plate 13 and the fourth end plate 14 are arranged opposite to each other. The first end plate 11 and the second end plate 12 serve as the top plate and the bottom plate of the housing 1, respectively; the third end plate 13 serves as the front end plate connected to the first end plate 11 and the second end plate 12, and the fourth end plate 14 serves as the rear end plate connected to the first end plate 11 and the second end plate 12. The fourth end plate 14 is provided with a wiring port for connecting to an external device, and the width of the first end plate 11 and the second end plate 12 is greater than the height of the third end plate 13 and the fourth end plate 14. The heat dissipation fin 4 is close to the third end plate 13 on one side. The above-mentioned ventilation window 5 is opened on the first end plate 11, and the antenna 6 is arranged on the side of the first end plate 11 away from the second end plate 12. The end cover 15 is assembled on the side of the third end plate 13 away from the fourth end plate 14, that is, the outer side of the third end plate 13, and the length and width of the end cover 15 are adapted to the length and width of the third end plate 13. The inner partition 16 is arranged opposite to the third end plate 13, and is arranged on the side of the heat dissipation fin 4 close to the fourth end plate 14 to separate the heat dissipation fin 4 from the space on the other side of the inner partition 16; and the inner partition 16 is close to the heat dissipation fin 4 to block the gap between the heat dissipation fin 4 and the inner partition 16. The top end of the inner partition 16 is connected to the first end plate 11, specifically, the top end of the inner partition 16 is connected to an edge of the ventilation window 5 away from the third end plate 13.
[0029] A plurality of first convection holes 17 are arranged at intervals on the entire inner baffle 16, and a plurality of second convection holes 18 are arranged on the third end plate 13. Since the length of the third end plate 13 is greater than the length of the inner baffle 16, the second convection holes 18 are not distributed throughout the entire third end plate 13, but are arranged in the area where the third end plate 13 overlaps with the inner baffle 16 in the length direction. The first convection holes 17 and the second convection holes 18 cooperate with each other, so that air can form convection in the direction relative to the third end plate 13 and the inner baffle 16, so as to improve the heat dissipation efficiency of the heat dissipation fins 4 arranged between the third end plate 13 and the inner baffle 16. A plurality of third convection holes 19 are arranged on the end cover 15, and the specific arrangement area is also the area where the end cover 15 overlaps with the inner partition 16 in the length direction. The third convection holes 19 cooperate with the plurality of second convection holes 18 to form an air flow channel between the inner partition 16, the third end plate 13 and the end cover 15, so that the air inside and outside the shell 1 can smoothly enter and exit the shell 1, thereby improving the heat dissipation efficiency of the heat dissipation fins 4 arranged in the shell 1.
[0030] In some embodiments, the heat sink 4 may include a first heat sink 41 and a plurality of second heat sinks 42. The first heat sink 41 may be rectangular, and the first heat sink 41 is arranged near the bottom of the housing 1. The first heat sink 41 is arranged parallel to the first end plate 11, and its long side may be parallel to the long side of the housing 1. The heating element 3 is arranged below the first heat sink 41, and the first heat sink 41 is close to the heating element 3, so that it can more effectively exchange heat with the heating element 3, thereby improving the heat dissipation efficiency. The second heat sink 42 is also rectangular, and is arranged at intervals along the length direction of the first heat sink 41. The inner partition 16 completely covers one side of the gap space between the second heat sink 42, that is, the length of the inner partition 16 is equal to the length of the first heat sink 41, and the height of the inner partition 16 is greater than the height of the second heat sink 42. Specifically, the second heat sink 42 is arranged vertically with the first heat sink 41, and its bottom end is connected to the first heat sink 41. The length of the second heat sink 42 is equal to the width of the first heat sink 41. The top ends of the two second heat sinks 42 adjacent to the two ends of the first heat sink 41 are connected to the first end plate 11, specifically to the edges of the two ends of the ventilation window 5, so that the four sides of the heat sink 4 are respectively blocked by the third end plate 13, the inner partition plate 16 and the two second heat sinks 42 at the two ends of the first heat sink 41 to prevent foreign objects falling on the foreign object isolation plate from falling from the four sides of the heat sink fins 4 into the interior of the multimedia host.
[0031] In some embodiments, the two second heat sinks 42 adjacent to the two ends of the first heat sink 41 may include a main body 421 and a connecting portion 422. The bottom end of the main body 421 is connected to the first heat sink 41, and the main body 421 is perpendicular to the first heat sink 41. The connecting portion 422 is connected to the top of the main body 421, and the connecting portion 422 is used to connect the second heat sink 42 and the first end plate 11. A through hole is provided on the connecting portion 422, and a through hole matching the connecting portion 422 may also be provided at a position of the first end plate 11 corresponding to the connecting portion 422. The through hole on the connecting portion 422 and the through hole on the first end plate 11 may cooperate with the screw connector to achieve the connection between the second heat sink 42 and the first end plate 11.
[0032] Specifically, the ventilation window 5 is provided on the first end plate 11 at a position opposite to the gap between the second heat sinks 42, so that the air outside the housing 1 can flow directly through the side of each second heat sink 42 from the ventilation window 5, thereby improving the heat dissipation efficiency. In addition, the second heat sink 42 is perpendicular to the plane where the ventilation window 5 is located, and the size of the ventilation window 5 is matched with the size of the first heat sink 41, so that the area of the second heat sink 42 that can directly contact the air outside the housing 1 is maximized, thereby further improving the heat dissipation efficiency of the heat sink 4.
[0033] The foreign matter isolation plate is arranged between the intervals of the second heat sink 42, and the distance between the foreign matter isolation plate and the second end plate 12 is smaller than the distance between the first end plate 11 and the second end plate 12, that is, the foreign matter isolation plate is lower than the plane where the ventilation window 5 is located, and the contact area between the second heat sink 42 and the air outside the housing 1 can be increased in the height direction of the second heat sink 42. Except for the two second heat sinks 42 adjacent to the two ends of the first heat sink 41, the tops of the remaining second heat sinks 42 are slightly lower than the plane where the ventilation window 5 is located, so that the antenna 6 arranged on one side of the ventilation window 5 intersects with the plane where part of the second heat sink 42 is located, and the coverage range of the antenna 6 can be expanded to the top of part of the second heat sink 42, that is, the antenna 6 covers part of the second heat sink 42, so as to improve the signal strength of the antenna 6, and the top of the part of the second heat sink 42 covered by the antenna 6 is separated from the bottom of the antenna 6 by a distance, and this distance can be specifically set to 7 mm, while meeting the signal requirements of the antenna 6, ensuring that the part of the second heat sink 42 can still contact with the external air through the ventilation window 5, and ensuring the heat dissipation requirements of the second heat sink 42.
[0034] After simulation analysis, the heat dissipation effect of the multimedia host provided by the embodiment of the utility model is improved by 5 degrees Celsius compared with the heat dissipation effect of the vehicle-mounted multimedia host in the prior art, that is, the lowest temperature of the chip of the existing vehicle-mounted multimedia host after heat dissipation is N degrees Celsius, while the lowest temperature of the chip of the multimedia host provided by the embodiment of the utility model after heat dissipation can reach N-5 degrees Celsius.
[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A multimedia host, characterized in that: It includes a shell, a heat-generating element, heat-dissipating fins and a foreign matter isolation plate; the heat-generating element is arranged in the shell, and the heat-dissipating fins are also arranged in the shell and opposite to the heat-generating element; the heat-dissipating fins include a plurality of second heat-dissipating fins arranged at intervals; the shell includes a first end plate and a second end plate arranged opposite to each other, a ventilation window is provided at a position opposite to the gap space between the first end plate and the second heat-dissipating fins, the foreign matter isolation plate is arranged between the intervals of the second heat-dissipating fins, and the distance between the foreign matter isolation plate and the second end plate is smaller than the distance between the first end plate and the second end plate.
2. The multimedia host according to claim 1, characterized in that: The multimedia host also includes an antenna, which is mounted on the first end plate. The top of the second heat sink is lower than the plane where the ventilation window is located, and the antenna covers a portion of the second heat sink.
3. The multimedia host according to claim 2, characterized in that: A gap is provided between the top of the second heat sink portion covered by the antenna and the bottom surface of the antenna.
4. The multimedia host according to claim 2, characterized in that: The antenna includes at least one of a 2G antenna, a 3G antenna, a 4G antenna, a 5G antenna, a WIFI antenna and a GPS antenna.
5. The multimedia host according to claim 1, characterized in that: The shell also includes a third end plate and an inner partition plate that are arranged opposite to each other, and the inner partition plate completely covers one side of the gap space between the second heat sinks, the top and bottom ends of the third end plate are respectively connected to the first end plate and the second end plate, the top end of the inner partition plate is connected to the first end plate, the side of the heat sink fin close to the third end plate is tightly attached to the third end plate, and the side of the heat sink fin away from the third end plate is tightly attached to the inner partition plate, so that the second heat sink is arranged between the inner partition plate and the third end plate.
6. The multimedia host according to claim 5, characterized in that: The inner partition plate is provided with a first convection hole, and the third end plate is provided with a second convection hole matched with the first convection hole.
7. The multimedia host according to claim 6, characterized in that: The shell further comprises an end cover, which is arranged on the outer side of the third end plate and is provided with a third convection hole matched with the second convection hole.
8. The multimedia host according to claim 5, characterized in that: The heat sink fins also include a first heat sink parallel to the first end plate, and the second heat sinks are spaced apart on the first heat sink along the length direction of the first heat sink, and the top ends of the two second heat sinks adjacent to the two ends of the first heat sink are respectively connected to the first end plate.
9. The multimedia host according to claim 8, characterized in that: The heat generating element is arranged below the first heat sink, and the first heat sink is in close contact with the heat generating element.
10. The multimedia host according to claim 8, characterized in that: The second heat sink is perpendicular to the plane where the ventilation window is located, and the size of the ventilation window is matched with the size of the first heat sink.