Heat dissipation structure of vehicle-mounted television and vehicle-mounted television
By covering the control board of the vehicle TV with a heat sink and using a grounding spring for static discharge, the problems of poor heat dissipation and difficulty in releasing static electricity in the vehicle TV are solved, achieving efficient heat dissipation and electromagnetic shielding.
Patent Information
- Application Number
- CN202422829287.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing in-vehicle TVs have poor heat dissipation structures, and static electricity on the control board is not easily released, affecting the performance.
Design a heat dissipation structure for an in-vehicle TV, including covering the control board with a heat sink, using a grounding spring for electrostatic discharge, and shielding electromagnetic signals through the heat sink. An aluminum heat sink and a stainless steel grounding spring are used to achieve efficient heat dissipation and electromagnetic shielding.
It achieves efficient heat dissipation for in-vehicle TVs, reduces electromagnetic interference, and effectively releases static electricity, thus improving the performance of in-vehicle TVs.
Smart Images
Figure CN223540601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle-mounted television technology, and in particular to a heat dissipation structure and a vehicle-mounted television. Background Technology
[0002] Currently, in the market environment for in-vehicle TVs, to meet customers' diverse functional requirements, especially the need for independent system functions, the IC-driven system consumes a significant amount of power. This power consumption is converted into heat, which needs to be dissipated. If the heat cannot be dissipated in time, it will affect the overall use of the in-vehicle TV. However, the heat dissipation structures of in-vehicle TVs in related technologies suffer from poor heat dissipation performance and difficulty in dissipating static electricity on the control motherboard after the heat dissipation structure is implemented. Utility Model Content
[0003] Based on this, the purpose of this utility model embodiment is to provide a heat dissipation structure for a vehicle-mounted TV and a vehicle-mounted TV. The heat dissipation structure of the vehicle-mounted TV can meet the heat dissipation requirements of the control motherboard of the vehicle-mounted TV, and also has an electromagnetic shielding function for the control motherboard, as well as an electrostatic discharge function for the control motherboard.
[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:
[0005] A heat dissipation structure for an in-vehicle television includes a control board mounted on the main housing of the in-vehicle television and a heat sink covering the control board; a grounding spring is provided on the inner side of the heat sink; one end of the grounding spring extends out of the heat sink for connecting to a grounding electrode; the other end of the grounding spring is provided with an abutting part that abuts against the control board.
[0006] The heat dissipation structure of the vehicle-mounted television according to this embodiment of the utility model dissipates heat generated by electronic components (such as main chips, capacitors, etc.) on the control motherboard of the vehicle-mounted television by covering the heat sink on the main housing. Simultaneously, since the heat sink covers the control motherboard, it also has a shielding effect, blocking electromagnetic signals and reducing electromagnetic interference. Furthermore, by providing a grounding spring on the inner side of the heat sink, static electricity on the control motherboard can be released through the grounding spring, achieving ESD (electrostatic discharge) protection. Therefore, the heat dissipation structure of the vehicle-mounted television according to this embodiment of the utility model achieves heat dissipation, electromagnetic shielding, and static electricity discharge.
[0007] In a preferred embodiment of this utility model, the heat sink includes an upper cover plate and side panels disposed around the upper cover plate; the upper cover plate and the side panels together form a cover-like structure; the grounding spring is riveted to the inner side of the upper cover plate, and one end of the grounding spring protrudes through the outer side of the upper cover plate. By creating a surrounding structure (i.e., the side panels) around the upper cover plate, electromagnetic signals can be shielded, reducing electromagnetic interference; the cover-like heat sink design allows the heat sink to be mounted on the control motherboard, thus covering the heat-generating electronic components on the control motherboard, and utilizing the cover-like heat sink structure for heat dissipation and electromagnetic signal shielding.
[0008] In a preferred embodiment of the utility model, the upper cover plate is provided with a through hole, and one end of the grounding spring extends out of the outer side of the upper cover plate through the through hole. By designing the through hole in the upper cover plate, one end of the grounding spring can extend out of the upper cover plate to facilitate connection to an external grounding electrode.
[0009] As a preferred embodiment of the utility model, the grounding spring includes a riveting portion, an outer connecting portion, and a spring portion; the riveting portion is riveted to the inner side of the upper cover plate by a rivet; one end of the outer connecting portion is fixedly connected to one side of the riveting portion, and the other end is bent through a through hole in the upper cover plate and extends out of the outer side of the upper cover plate for connection with the grounding electrode; the spring portion includes a first spring and a second spring, one end of the first spring is fixedly connected to the other side of the riveting portion and bent toward the control main board, one end of the second spring is fixedly connected to the other end of the first spring and bent toward the upper cover plate, and the bent joint of the first spring and the second spring forms an abutment portion for abutting the control main board; there is a gap between the other end of the second spring and the upper cover plate, and the other end of the second spring is provided with a bending structure. The grounding spring in this embodiment of the utility model is designed with a riveting part to facilitate riveting to the inner side of the upper cover plate; it is designed with an external connecting part to extend through the upper cover plate to facilitate connection to an external grounding electrode; it is designed with a spring part to facilitate contact between the grounding spring and the control main board; a bending structure is provided at the other end (i.e., the end) of the second spring, and there is a gap between it and the upper cover plate to avoid the edge of the other end of the second spring being sharp and causing damage to the upper cover plate or other components.
[0010] In a preferred embodiment of this utility model, a heat dissipation material layer is provided on the outer surface of the upper cover plate to accelerate heat dissipation.
[0011] In a preferred embodiment of this utility model, the inner side of the upper cover plate is provided with a convex bulge and a groove; the convex bulge is used to contact the surface of the main chip on the control motherboard; the groove is used to accommodate the capacitor on the control motherboard. Since the control motherboard typically contains electronic components such as the main chip and capacitors, to improve heat dissipation, the inner side of the upper cover plate is provided with a convex bulge and a groove. The convex bulge is a protrusion towards the control motherboard, and the groove is a recess towards the outer side of the upper cover plate. This design allows the upper cover plate to fit snugly against the main chip, capacitors, and other electronic components on the control motherboard, thereby accelerating heat dissipation.
[0012] In a preferred embodiment of this utility model, a thermally conductive gel layer is provided on the surface of the convex hull, which contacts the surface of the main chip on the control motherboard. Since the main chip consumes a large amount of power and generates a significant amount of heat during operation, the thermally conductive gel layer on the surface of the convex hull facilitates heat transfer and accelerates heat dissipation.
[0013] In a preferred embodiment of this utility model, the side panel is provided with several connecting portions; after the heat sink is installed on the control mainboard, the several connecting portions are respectively fitted and connected to the control mainboard, and are fixed to the main housing of the vehicle-mounted TV by several screws passing through the several connecting portions and the control mainboard. By designing several connecting portions on the heat sink and locking them with several screws, and ensuring close contact and connection with the surface of the control mainboard, a fixed function is achieved while also providing EMC protection and improving the electromagnetic shielding effect.
[0014] In a preferred embodiment of this utility model, the heat sink is made of aluminum, and the grounding spring is made of stainless steel. Aluminum is a material with high thermal conductivity and is lightweight, making it particularly suitable for lightweight heat sinks in automotive ceiling-mounted TVs. The stainless steel grounding spring facilitates ESD protection.
[0015] This utility model embodiment also provides a vehicle-mounted television, including the heat dissipation structure of any of the vehicle-mounted televisions described above. The vehicle-mounted television with this heat dissipation structure not only meets the heat dissipation requirements of the vehicle-mounted television's control board, but also provides electromagnetic shielding for the control board and electrostatic discharge.
[0016] To better understand and implement this invention, the embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0017] Figure 1 An exploded view of a heat dissipation structure for a vehicle-mounted television according to an embodiment of this utility model;
[0018] Figure 2Assembly diagram for controlling the motherboard and heatsink;
[0019] Figure 3 This is a schematic diagram of the outer surface structure of the radiator;
[0020] Figure 4 A schematic diagram of the inner surface structure of the radiator;
[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0022] In the diagram: 1. Main housing; 2. Control motherboard; 21. Main chip; 22. Capacitor; 3. Heat sink; 31. Upper cover; 311. Through hole; 312. Protrusion; 313. Groove; 314. Thermal conductive gel layer; 32. Side panel; 321. Connecting part; 4. Grounding spring; 41. Riveting part; 42. External part; 43. First spring; 44. Second spring; 45. Abutment part; 46. Bending structure. Detailed Implementation
[0023] In the description of the embodiments of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0024] Furthermore, the terms "first," "second," "third," etc., used in the specification and claims are only for the purpose of distinguishing the description of the same technical features and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated, nor necessarily the order of description or chronological sequence. Where appropriate, the terms are interchangeable. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.
[0025] Similarly, the term "connection" is used in the specification and claims and should not be construed as limited to a direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in a device or system; it means that there is a path between device A and device B, which can be a path that includes other devices or tools.
[0026] In the market environment for in-vehicle ceiling-mounted TVs, to meet customers' diverse functional requirements, especially the need for independent system functions, the IC driving the system consumes a significant amount of power. This power consumption is converted into heat that needs to be dissipated. If the heat cannot be dissipated in time, it will affect the overall use of the in-vehicle ceiling-mounted TV. However, in related technologies, in-vehicle ceiling-mounted TVs are simply standalone display devices without a heat dissipation structure. Even if some in-vehicle ceiling-mounted TVs do have a heat dissipation structure, the structure suffers from poor heat dissipation performance and difficulty in dissipating static electricity on the control board after the structure is implemented.
[0027] Therefore, this utility model embodiment provides a heat dissipation structure for a vehicle-mounted TV, specifically a heat dissipation structure with shielding function for the control motherboard of a vehicle-mounted ceiling TV. The heat sink dissipates the heat generated by the electronic components on the control motherboard, and the heat sink also has an electromagnetic shielding function. The grounding spring is used to release static electricity from the control motherboard.
[0028] This utility model discloses a heat dissipation structure for a vehicle-mounted TV, more specifically a heat dissipation structure for a vehicle-mounted ceiling-mounted TV. Please refer to [link / reference]. Figure 1 The device includes a control board 2 mounted on the main housing 1 of the vehicle-mounted ceiling TV, and a heat sink 3 covering the control board 2. A grounding spring 4 is provided inside the heat sink 3. One end of the grounding spring 4 extends out of the heat sink 3 and is used to connect to a grounding electrode. The other end of the grounding spring 4 has an abutment portion 45 that contacts the control board 2. The heat dissipation structure of the vehicle-mounted TV in this embodiment utilizes the heat sink 3 covering the control board 2 on the main housing 1 of the vehicle-mounted ceiling TV to dissipate heat generated by electronic components (such as the main chip 21, capacitors 22, etc.) on the control board 2. Simultaneously, since the heat sink 3 is covering the control board 2, it also has a shielding effect, shielding electromagnetic signals and reducing electromagnetic interference. Furthermore, by providing the grounding spring 4 inside the heat sink 3, static electricity on the control board 2 can be released through the grounding spring 4, achieving ESD (electrostatic discharge) protection. Therefore, the heat dissipation structure of the vehicle-mounted TV in this embodiment of the present invention can not only dissipate heat, but also shield electromagnetic fields and release static electricity.
[0029] In this embodiment of the invention, for a preferred structure of the radiator 3, please refer to [link / reference]. Figures 2-4The heat sink 3 includes an upper cover plate 31 and side panels 32 arranged around the upper cover plate 31; the upper cover plate 31 and the side panels 32 together form a cover-like structure; a grounding spring 4 is riveted to the inner side of the upper cover plate 31, and one end of the grounding spring 4 protrudes through the outer side of the upper cover plate 31. In this embodiment of the invention, by designing a surrounding structure around the upper cover plate 31, i.e., setting the side panels 32, electromagnetic signals can be shielded, reducing electromagnetic interference; the cover-like structure of the heat sink 3 allows it to be placed on the control motherboard 2 to cover the electronic components (such as the main chip 21, capacitors 22, etc.) on the control motherboard 2 that generate heat, thus utilizing the cover-like structure of the heat sink 3 for heat dissipation and electromagnetic signal shielding. In this embodiment of the invention, the heat sink 3 only covers the electronic components on the control motherboard 2 that generate heat as needed; other electronic components that generate little or no heat during operation do not need to be covered.
[0030] In this embodiment of the utility model, to facilitate the protrusion of one end of the grounding spring 4 riveted to the inner side of the upper cover plate 31 through the upper cover plate 31, please refer to... Figures 3-5 The upper cover plate 31 is provided with a through hole 311, and one end of the grounding spring 4 extends out of the outer side of the upper cover plate 31 through the through hole 311. By designing the through hole 311 in the upper cover plate 31, one end of the grounding spring 4 can pass through the upper cover plate 31 so as to connect with the grounding electrode outside the heat sink 3.
[0031] In this embodiment of the invention, to facilitate faster heat dissipation from the heat sink 3 and the electronic components on the control motherboard 2 that generate heat, please refer to... Figure 4 The inner side of the upper cover plate 31 is provided with a protrusion 312 and a groove 313. In this embodiment of the invention, the protrusion 312 is used to contact the surface of the main chip 21 on the control motherboard 2; the groove 313 is used to accommodate the capacitor 22 on the control motherboard 2, so that the upper cover plate 31 can be as close as possible to the electronic components and improve the heat transfer efficiency. In this embodiment of the invention, since the control motherboard 2 has electronic components such as the main chip 21 and the capacitor 22, in order to facilitate the improvement of heat conduction, a protrusion 312 and a groove 313 are provided on the inner side of the upper cover plate 31. The protrusion 312 is a protrusion in the direction of the control motherboard 2, and the end face of the protrusion 312 is flat; the groove 313 is a groove facing the outer side of the upper cover plate 31, so as to accommodate and avoid the large capacitor 22. In this embodiment of the invention, the design of the protrusion 312 and the groove 313 enables the upper cover plate 31 to fit against the electronic components such as the main chip 21 and the capacitor 22 on the control motherboard 2, so as to accelerate heat dissipation. The design of the convex bulge 312 and the groove 313 can be designed according to the electronic components on the control motherboard 2.
[0032] In this embodiment of the utility model, please refer to Figure 1 and Figure 4Considering the high power consumption and heat generation of the main chip 21 during operation, a thermally conductive gel layer 314 is provided on the surface of the bulge 312. The bulge 312 contacts the surface of the main chip 21 on the control motherboard 2 through the thermally conductive gel layer 314. This allows the thermally conductive gel layer 314 to transfer heat and accelerate heat dissipation. In this embodiment of the invention, the thermal conductivity of the thermally conductive gel layer 314 is 5 W.
[0033] In this embodiment of the invention, for a preferred structure of the grounding spring 4, please refer to [link / reference]. Figure 5 The grounding spring 4 includes a riveting part 41, an outer connecting part 42, and a spring part. The riveting part 41 has a riveting through hole in the middle, through which a rivet 411 passes to rivet the grounding spring 4 onto the inner side of the upper cover plate 31. The outer connecting part 42 has a bent sheet-like structure. One end of the outer connecting part 42 is fixedly connected to one side (or one end) of the riveting part 41, and the other end of the outer connecting part 42 is bent and extends out through the through hole 311 of the upper cover plate 31 to connect with the grounding electrode. In this embodiment, the through hole 311 is a through hole adapted to the sheet-like structure of the outer connecting part 42. After the other end of the outer connecting part 42 passes through the through hole 311, it also serves as a limiting device, restricting the rotation of the grounding spring 4. The spring section includes a first spring 43 and a second spring 44. One end of the first spring 43 is fixedly connected to the other side (or the other end) of the riveting part 41 and bent towards the control main board 2. One end of the second spring 44 is fixedly connected to the other end of the first spring 43 and bent towards the upper cover plate 31. The bent joint of the first spring 43 and the second spring 44 forms an abutment part 45 for contacting the control main board 2, so as to facilitate contact and conduction between the grounding spring 4 and the control main board 2 and facilitate static discharge. There is a gap between the other end of the second spring 44 and the upper cover plate 31, and the other end of the second spring 44 is provided with a bending structure 46 to prevent the edge of the other end of the second spring 44 from being sharp and causing damage to the upper cover plate 31 or other components.
[0034] In this embodiment of the present invention, a heat dissipation material layer (not shown) is provided on the outer side of the upper cover plate 31; the heat dissipation material layer is specifically a nano carbon layer, which is formed by spraying nano carbon material on the outer side of the upper cover plate 31 to accelerate heat dissipation.
[0035] In this embodiment of the invention, to facilitate fixing the heat sink 3 and the control motherboard 2 to the main housing 1 of the vehicle-mounted ceiling TV, please refer to... Figures 2-4The side panel 32 is provided with several connecting parts 321, specifically six connecting parts 321. After the heat sink 3 is placed on the control main board 2, the connecting parts 321 are respectively attached to and connected to the control main board 2. They are then fixed to the main housing 1 of the vehicle-mounted ceiling TV by several screws 5 (specifically six screws) passing through the connecting parts 321 and the control main board 2, thus achieving the fixation between the heat sink 3, the control main board 2, and the main housing 1 of the vehicle-mounted ceiling TV. Simultaneously, the heat sink 3, through the several connecting parts 321, is in close contact with the surface of the control main board 2, which also serves to improve EMC performance and enhance electromagnetic shielding.
[0036] In this embodiment of the invention, since the heat dissipation structure is installed at the vehicle ceiling-mounted TV, and the vehicle ceiling-mounted TV is installed on the vehicle roof, the radiator 3 is made of aluminum, specifically 1mm thick aluminum, to control weight. That is, the side panels 32 of the upper cover 31 are all made of 1mm thick aluminum, and the radiator 3 is integrally formed. Aluminum is a material with high thermal conductivity and light weight, which can accelerate the heat dissipation of the radiator 3, eliminating the need for a large heat dissipation structure. The grounding spring 4 is made of stainless steel, which helps with static electricity discharge.
[0037] This utility model embodiment also provides a vehicle-mounted television, more precisely a vehicle-mounted ceiling-mounted television, including the heat dissipation structure of this utility model embodiment. The heat dissipation structure is disposed on the main housing 1 of the vehicle-mounted ceiling-mounted television, enabling heat dissipation and providing shielding functionality. Furthermore, the heat dissipation structure is lightweight and can meet the heat dissipation requirements of the control motherboard 2 of the vehicle-mounted ceiling-mounted television.
[0038] The above embodiments only illustrate several implementation methods of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model embodiments, and the present utility model embodiments are also intended to include these modifications and variations.
Claims
1. A heat dissipation structure for a vehicle-mounted television, characterized in that: The device includes a control board mounted on the main housing of the vehicle-mounted television and a heat sink covering the control board. A grounding spring is provided on the inner side of the heat sink. One end of the grounding spring extends out of the heat sink and is used to connect to a grounding electrode. The other end of the grounding spring has an abutting part that abuts against the control board.
2. The heat dissipation structure of the vehicle-mounted television according to claim 1, characterized in that: The radiator includes an upper cover plate and side panels arranged around the upper cover plate; the upper cover plate and the side panels are arranged to form a cover-like structure; the grounding spring is riveted to the inner side of the upper cover plate, and one end of the grounding spring protrudes through the outer side of the upper cover plate.
3. The heat dissipation structure of the vehicle-mounted television according to claim 2, characterized in that: The upper cover plate is provided with a through hole, and one end of the grounding spring extends out of the outer side of the upper cover plate through the through hole.
4. The heat dissipation structure of the vehicle-mounted television according to claim 3, characterized in that: The grounding spring includes a riveting part, an outer part, and a spring part; the riveting part is riveted to the inner side of the upper cover plate by a rivet; one end of the outer part is fixedly connected to one side of the riveting part, and the other end is bent through the through hole of the upper cover plate and extends out of the outer side of the upper cover plate for connection with the grounding electrode; the spring part includes a first spring and a second spring, one end of the first spring is fixedly connected to the other side of the riveting part and bent toward the control main board, one end of the second spring is fixedly connected to the other end of the first spring and bent toward the upper cover plate, and the bent joint of the first spring and the second spring forms the abutment part for abutting the control main board; there is a gap between the other end of the second spring and the upper cover plate, and the other end of the second spring is provided with a bending structure.
5. The heat dissipation structure of the vehicle-mounted television according to claim 2, characterized in that: The outer side of the upper cover plate is provided with a heat dissipation material layer.
6. The heat dissipation structure of the vehicle-mounted television according to claim 2, characterized in that: The inner side of the upper cover plate is provided with a protrusion and a groove; the protrusion is used to contact the surface of the main chip on the control motherboard; the groove is used to accommodate the capacitor on the control motherboard.
7. The heat dissipation structure of the vehicle-mounted television according to claim 6, characterized in that: The surface of the convex bulge is provided with a thermally conductive gel layer, which contacts the surface of the main chip on the control motherboard.
8. The heat dissipation structure of the vehicle-mounted television according to claim 2, characterized in that: The side panel is provided with several connecting parts; after the radiator is covered on the control main board, the several connecting parts are respectively attached to and connected to the control main board, and are fixed to the main housing of the vehicle TV by several screws passing through the several connecting parts, the control main board and the main housing of the vehicle TV.
9. The heat dissipation structure of the vehicle-mounted television according to claim 1, characterized in that: The heat sink is made of aluminum; the grounding spring is made of stainless steel.
10. A vehicle-mounted television, characterized in that: Includes the heat dissipation structure of the vehicle-mounted television as described in any one of claims 1-9.