Streaming media rearview mirror and vehicle
By installing a heat sink in the car's rearview mirror to contact the IC module, and using fins and thermally conductive silicone to improve heat transfer efficiency, the problem of screen distortion or black screen caused by heat accumulation in the display module is solved, achieving higher reliability and heat dissipation effect.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- YFORE TECHNOLOGY CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-05-15
AI Technical Summary
The display modules and IC modules in existing car rearview mirrors suffer from heat buildup, resulting in distorted or black screens, and the heat cannot be effectively dissipated, affecting reliability.
The heat sink is installed in the rearview mirror and contacts the IC module on the PCB board. The heat transfer efficiency is improved by using fins and thermally conductive silicone. The fins increase the air contact area for heat dissipation. The shell is designed as a semi-enclosed arc shape to adapt to the space and enhance airflow. The metal material is combined to improve thermal conductivity.
It effectively reduces the temperature of the display module and IC module, improves the reliability of the streaming media rearview mirror, reduces the probability of screen flickering or blackout, and enhances heat dissipation.
Smart Images
Figure CN2025123348_15052026_PF_FP_ABST
Abstract
Description
A streaming rearview mirror and vehicle Technical Field
[0001] This application relates to the field of automotive parts technology, and more particularly to a streaming media rearview mirror and vehicle. Background Technology
[0002] Rearview mirrors are tools that allow drivers to observe what's behind them. Modern rearview mirrors are optical, using reflective lenses to observe what's behind the vehicle. However, dirt on the rear window can obstruct the driver's view, making it impossible to see what's behind the vehicle through the mirror. Nowadays, rearview mirror lenses are often replaced with screens. Cameras mounted at the rear of the vehicle capture images of what's behind the car and transmit them to the screen, allowing the driver to continuously observe what's behind the vehicle without being affected by dirt on the rear window, and providing a wider field of vision.
[0003] In order to transmit images to the screen, a PCB board needs to be installed inside the original front and rearview mirror housing. The IC modules on the PCB motherboard and the display module generate a lot of heat during operation. This will cause heat accumulation at the PCB board and the display module. The IC modules on the PCB board will overheat and fail, eventually causing the display module to display a distorted or black screen, thus reducing the reliability of the display module. Summary of the Invention
[0004] The purpose of this application is to provide a streaming media rearview mirror and vehicle, which solves the problem of heat accumulation and screen distortion caused by installing a display module on the rearview mirror in the prior art.
[0005] To achieve this objective, the following technical solution is adopted in this application:
[0006] This application provides a streaming media rearview mirror, including a bracket;
[0007] The display module is mounted on one side of the bracket;
[0008] An outer casing is mounted on the other side of the bracket, and the outer casing and the bracket form a mounting cavity;
[0009] A PCB board is mounted on the bracket, and the PCB board is located within the mounting cavity;
[0010] A heat sink is disposed within the mounting cavity. The heat sink and the bracket are located on opposite sides of the PCB board, and the heat sink abuts against the IC module on the PCB board.
[0011] This application also provides a vehicle including the aforementioned streaming rearview mirror, which is mounted on the windshield.
[0012] This application has the following beneficial effects:
[0013] Since the heat sink is in direct contact with the high-temperature IC module on the PCB board, during the display of the streaming rearview mirror, the heat from the display module and the IC module on the PCB board will be directly transferred to the heat sink on one side of the bracket, preventing heat from accumulating in the IC module and display module. This allows the heat to be diffused throughout the mounting cavity through the heat sink, reducing the heat inside the display module and IC module. Attached Figure Description
[0014] Figure 1 is a schematic diagram of the internal structure of the streaming media rearview mirror of this application;
[0015] Figure 2 is a cross-sectional view of the streaming media rearview mirror of this application.
[0016] In the diagram: 1. Bracket; 11. Second limiting post; 12. Buckle; 13. Mounting base; 2. Display module; 3. Housing; 4. PCB board; 5. IC module; 6. Heat sink; 61. Protrusion; 62. Fin; 63. Heat dissipation surface; 64. Cable routing channel; 7. Thermal conductive silicone; 8. First screw; 9. First limiting post; 10. Second screw. Embodiments of the present invention
[0017] In the current technology, in order to improve the field of vision and provide the driver with a rear view when the rear window is blocked, the rearview mirror is replaced with a screen. However, the screen needs to install a PCB board and an IC module. Both the IC module and the screen itself will generate heat. Since the rearview mirror is relatively narrow, the heat cannot be dissipated, which will cause the IC module to overheat and the screen to distort.
[0018] To address the aforementioned issues, as shown in Figures 1 and 2, this application provides a streaming media rearview mirror, including a bracket 1. A display module 2 is mounted on one side of the bracket 1, and a housing 3 is mounted on the other side of the bracket 1. The housing 3 and the bracket 1 form a mounting cavity. A PCB board 4 is mounted on the side of the bracket 1 closest to the housing 3. A heat sink 6 is mounted inside the mounting cavity, and the heat sink 6 abuts against an IC module 5 on the PCB board 4. The streaming media rearview mirror of this application is typically installed on the windshield inside the driver's cab of a vehicle. A positioning hole is formed on the PCB board 4, and a positioning protrusion is formed on the bracket 1. The positioning protrusion is inserted into the positioning hole, thereby allowing the PCB board 4 to be mounted on the bracket 1. The heat generated by the display module 2 can be transferred to the bracket 1 and dissipated through the bracket 1 contact with the outside air.
[0019] A heat sink 6 is installed on the other side of the bracket 1. Since the heat sink 6 is in contact with the IC module 5 on the PCB board 4, the heat generated on the IC module 5 will be directly transferred into the heat sink 6, increasing the contact area with the air, so that the heat of the IC module 5 can be quickly put into the air, reducing heat accumulation, and thus reducing the probability of the streaming media rearview mirror going black or being damaged.
[0020] A protrusion 61 is formed on one side of the heat sink 6, and thermally conductive silicone 7 is attached to the protrusion 61, abutting against the IC module 5. By setting the protrusion 61, the thermally conductive silicone 7 can be raised and lowered to press firmly during assembly. The separately set protrusion 61 allows the thermally conductive silicone 7 to press firmly against the IC module 5, making the thermally conductive silicone 7 and the IC module 5 fit more tightly, improving the heat conduction efficiency, and allowing the heat generated by the IC module 5 itself to be efficiently and efficiently transferred to the heat sink 6, reducing the heat accumulation on the PCB board 4, and making the streaming media rearview mirror more reliable. At the same time, the area around the protrusion 61 does not contact the PCB board 4, leaving installation space for electronic components on the PCB board 4.
[0021] On the side of the heat sink 6 away from the IC module 5, there are several fins 62 on the side away from the PCB board 4. The fins 62 increase the contact area between the heat sink 6 and the air, making the heat dissipation efficiency higher. The heat generated by the PCB board 4 and the display module 2 can be directed to the mounting cavity on the other side of the bracket 1, increasing the contact area with the air and improving the heat dissipation capacity.
[0022] The length direction of PCB board 4 is set as the X-axis direction, and the width direction of PCB board 4 is set as the Y-axis direction. Multiple fins 62 are raised on the heat dissipation surface 63. The multiple fins 62 are spaced apart and parallel to each other, forming gaps between them to allow airflow to pass through and increase heat dissipation capacity. At the same time, gaps can also be set between each row of fins 62 to further increase airflow capacity. This application uses a single row of fins 62, which can form a larger area of fins 62 in the mounting cavity, further improving heat dissipation capacity.
[0023] Each fin 62 is perpendicular to the heat dissipation surface 63, allowing airflow between the fins 62 to flow freely. At the same time, there is a gap between the end of the fin 62 facing away from the PCB board 4 and the inner wall of the outer casing 3. The gap is within a set size range, allowing airflow to flow freely and increasing heat dissipation capacity.
[0024] The outer shell 3 of this application is semi-enclosed arc shape. Along the X-axis direction of the PCB board 4, the distance between the high point of the inner wall of the outer shell 3 and the PCB board 4 gradually increases from both ends to the middle in the X-axis direction. Along the Y-axis direction of the PCB board 4, the distance between the high point of the inner wall of the outer shell 3 and the PCB board 4 gradually increases from both ends to the middle in the Y-axis direction. At the same time, in order to adapt to the inner wall of the arc-shaped outer shell 3, at least some of the fins 62 are convex.
[0025] This is to adapt to the shape of the outer casing 3. The height of the fins 62 in this application is reduced near the edge of the streaming rearview mirror, or the upper edge of the fins 62 is made convex. This adapts the fins 62 to the inner shape of the outer casing 3 while leaving a certain gap, preventing the fins 62 from contacting the outer casing 3. The space on both sides of the fins 62 is heated by the heat from the fins 62. After the air on both sides of the fins 62 is heated, it can flow across the gap between the fins 62 and the outer casing 3, carrying away heat and increasing the heat dissipation capacity of the fins 62. Simultaneously, the fins 62 can reach their maximum height within the mounting cavity, increasing the contact area with air and improving heat dissipation. In other embodiments, at least some of the upper ends of the fins 62 are similar in shape to the inner wall of their corresponding outer casing 3. For example, to adapt to the curved inner wall of the outer casing 3, the top of the fins 62 is also curved.
[0026] The radiator 6 has a first through hole, the bracket 1 has a first screw hole, the bracket 1 has a mounting base 13, and the mounting base 13 has a second through hole. The first screw 8 passes through the first and second through holes and is screwed into the first screw hole. By opening the first through hole in the radiator 6 and using the existing first screw 8 of the streaming media rearview mirror for fixation, no structural modifications to the bracket 1 are required, which can reduce the modification cost.
[0027] Meanwhile, a second screw hole is provided on the bracket 1, a third through hole is provided on the heat sink 6, and a fourth through hole is provided on the PCB board 4. The second screw 10 passes through the third through hole and the fourth through hole and is screwed into the second screw hole, which can further fix the heat sink 6 so that it can be stably pressed onto the PCB board 4.
[0028] The radiator 6 is provided with one of a first limiting hole and a first limiting post 9, and the mounting base 13 is provided with the other of the first limiting hole and the first limiting post 9. The first limiting post 9 is inserted into the first limiting hole. The radiator 6 is provided with one of a second limiting hole and a second limiting post 11, and the bracket 1 is provided with the other of the second limiting hole and the second limiting post 11. The second limiting post 11 is inserted into the second limiting hole. When installing the radiator 6, the installation position of the radiator 6 can be clearly defined by the first limiting post 9 or the second limiting post 11, or the first limiting post 9 and the second limiting post 11, which facilitates the screwing of the first screw 8 and the second screw 10 and reduces the assembly difficulty.
[0029] A housing 3 is provided on one side of the bracket 1. The housing 3 is divided into two sets of covers and is symmetrically installed on both sides of the mounting base 13. In other embodiments, the housing 3 can also be integrally set. The housing 3 is inserted into the bracket 1. The heat sink 6 is installed through the mounting cavity formed by the inner side of the housing 3. The housing 3 is provided with heat dissipation holes. The mounting cavity is connected to the outside through the heat dissipation holes, which can allow the high temperature gas in the mounting cavity to be quickly discharged to the outside, improve heat dissipation capacity and avoid heat accumulation. A buckle part 12 is formed on the bracket 1. The buckle part 12 is hooked onto the rib plate on the inner side of the housing 3, which reduces the number of connecting parts, simplifies the installation process, and facilitates maintenance and disassembly.
[0030] The heat sink 6 and bracket 1 of this application are die-cast metal parts made of high thermal conductivity material. The heat sink 6 and bracket 1 are made of aluminum, which can reduce the weight of the streaming media rearview mirror while improving the heat conduction efficiency. The heat dissipated by the IC module 5 can be completely conducted into the heat sink 6. At the same time, the heat generated by the screen can be quickly dissipated to achieve a cooling effect. The bracket of this application is also equipped with a display module 2. The heat in the display module 2 and the heat in the PCB board 4 will be transferred to the bracket 1 and discharged to the outside through the bracket 1. In this way, it can work together with the heat sink 6 to dissipate heat for the streaming media rearview mirror.
[0031] The heat sink 6 and PCB board 4 are surrounded by a cable routing channel 64, and the PCB board 4 is equipped with a connector. The streaming media rearview mirror also includes a cable and a mating connector connected to the cable. The cable passes through the mounting base 13, and the mating connector is plugged into the connector. The cable passes through the cable routing channel 64. In order to adapt to the narrow space inside the mounting cavity, a cable routing channel 64 is provided on the heat sink 6 to leave installation space for the original wires on the lower side, thereby reducing the modification cost of the streaming media rearview mirror.
Claims
1. A streaming rearview mirror, including a bracket (1); The display module (2) is installed on one side of the bracket (1); The outer shell (3) is installed on the other side of the bracket (1), and the outer shell (3) and the bracket (1) form an installation cavity; PCB board (4) is mounted on the bracket (1), and the PCB board (4) is located in the mounting cavity; And a heat sink (6) is disposed in the mounting cavity. The heat sink (6) and the bracket (1) are respectively located on both sides of the PCB board (4), and the heat sink (6) abuts against the IC module (5) on the PCB board (4).
2. The streaming media rearview mirror according to claim 1, wherein, The heat sink (6) has a protrusion (61) on its lower side, and a thermally conductive silicone (7) is attached to the protrusion (61). The thermally conductive silicone (7) is attached to the IC module (5).
3. The streaming media rearview mirror according to claim 1, wherein, The heat sink (6) also includes a number of fins (62) protruding from the side of the heat sink (6) away from the PCB board (4).
4. The streaming media rearview mirror according to claim 3, wherein, The length direction of the PCB board (4) is set as the X-axis direction, and the width direction of the PCB board (4) is set as the Y-axis direction; multiple fins (62) are formed on the heat dissipation surface (63), and the multiple fins (62) are spaced apart; and / or, The fins (62) are perpendicular to the heat dissipation surface (63); and / or, A gap is provided between the end of the fin (62) facing away from the PCB board (4) and the inner wall of the outer casing (3), and the gap is within a set size range; and / or, Along the X-axis direction of the PCB board (4), the distance between the highest point of the inner wall of the outer shell (3) and the PCB board (4) gradually increases from both ends towards the middle in the X-axis direction; and / or, Along the Y-axis direction of the PCB board (4), the distance between the high point of the inner wall of the outer shell (3) and the PCB board (4) gradually increases from both ends of the Y-axis direction toward the middle, and at least part of the fins (62) are convex.
5. The streaming media rearview mirror according to claim 1, wherein, The radiator (6) has a first through hole, the bracket (1) has a mounting base (13), the mounting base (13) has a second through hole, the bracket (1) has a first screw hole, and the first screw (8) passes through the first through hole and the second through hole in sequence and is screwed into the first screw hole.
6. The streaming media rearview mirror according to claim 5, wherein, The radiator (6) is provided with one of a first limiting hole and a first limiting post (9), and the mounting base (13) is provided with the other of a first limiting hole and a first limiting post (9), with the first limiting post (9) inserted into the first limiting hole; and / or, the radiator (6) is provided with one of a second limiting hole and a second limiting post (11), and the bracket (1) is provided with the other of a second limiting hole and a second limiting post (11), with the second limiting post (11) inserted into the second limiting hole.
7. The streaming media rearview mirror according to claim 5, wherein, The bracket (1) is provided with a second screw hole, the heat sink (6) is provided with a third through hole, the PCB board (4) is provided with a fourth through hole, and the second screw (10) passes through the third through hole and the fourth through hole and is screwed into the second screw hole.
8. The streaming media rearview mirror according to claim 1, wherein, Both the radiator (6) and the bracket (1) are die-cast metal parts.
9. The streaming media rearview mirror according to any one of claims 1-8, wherein, The heat sink (6) and the PCB board (4) are arranged to form a wiring groove (64); the PCB board (4) is provided with a connector; the streaming media rearview mirror also includes a cable and a docking connector connected to the cable, the docking connector is plugged into the connector, and the cable passes through the wiring groove (64).
10. A vehicle comprising a streaming rearview mirror as described in any one of claims 1-9, the streaming rearview mirror being mounted on a windshield.