A 4G vehicle event data recorder with a communication module separated

Abstract

The utility model discloses a 4G vehicle event data recorder of communication module separation, including 4G communication function module unit and recorder host unit that are independent and electrically connected, 4G communication function module unit includes upper casing and the upper mainboard subassembly of being fixed in the upper casing, recorder host unit includes lower casing and the lower mainboard subassembly of being fixed in the lower casing. The utility model will 4G communication function module and non 4G communication function module be integrated in independent upper mainboard subassembly, lower mainboard subassembly respectively, and correspond to be placed in 4G communication function module unit and recorder host unit that are independent, break the structural limitation of traditional vehicle event data recorder " multiple module integration in same mainboard", make heating component physical separation, can reduce the temperature rise of single component significantly, effectively avoid 4G network break connection, equipment accidental restart and other problems caused by high temperature, improve the reliability of 4G communication function and equipment overall operation stability greatly.

Description

Technical Field

[0001] This utility model relates to a dashcam, specifically a 4G dashcam with a separate communication module. Background Technology

[0002] A dashcam, also known as a car camera or a driving black box, is a core device installed in a car to record and save video, audio, and related data during driving. Its traditional structure usually includes a camera, local storage devices, and basic electronic components. Its functions are limited to "offline" recording and storage and playback afterward, which cannot meet users' advanced needs for real-time vehicle monitoring, remote management, and data security.

[0003] With the development of vehicle networking technology, 4G communication modules have been gradually integrated into dashcams, transforming them from "single recording tools" to "vehicle networking terminals." This has resulted in multi-dimensional functional breakthroughs, featuring the following characteristics: First, it supports real-time data transmission and remote monitoring via 4G networks. Users can remotely view the vehicle's surroundings and driving status using a mobile app, addressing the pain point of traditional dashcams that "can only track events afterward and cannot intervene in real time." High-definition video transmission ensures that critical information is not lost. Second, it possesses the ability to proactively alarm and coordinate with rescue efforts in emergency situations. In the event of a collision or other accident, it can automatically send on-site video and GPS location to emergency contacts or rescue platforms via the 4G network, and can also coordinate with insurance companies to expedite damage assessment and claims processing. Third, it provides dual protection through cloud storage and local backup, mitigating the risks of damage and data loss associated with traditional SD cards, and supports cross-device retrieval of historical videos. Fourth, it expands vehicle networking value-added services, such as real-time traffic navigation, remote vehicle control, and online entertainment and information push notifications, significantly enhancing the user experience. While current dashcams with 4G functionality offer the advantages mentioned above, they still generally suffer from the following key drawbacks: 1. Concentrated heat leading to unstable performance: The 4G communication module is integrated with other functional modules such as the camera, storage, and video processing on the same motherboard. During operation, the concentrated heat generated by these modules leads to high internal temperatures within the main unit. Under high temperatures, issues such as 4G network disconnection and unexpected device restarts can easily occur, severely impacting the reliability of the 4G function and the overall stability of the device. 2. High development difficulty, cost, and risk: Due to the integration of the 4G module with the main unit, each dashcam requires a separate design for its specific structural layout during development. Designing 4G antennas and repeatedly debugging them to ensure communication performance not only increased the workload and extended the development cycle, but also raised the development cost. At the same time, the 4G antenna designs of different models are very different, making it difficult to ensure the consistency of 4G antenna performance across models. If the antenna design or debugging is improper, it can easily lead to 4G function failure, significantly increasing the risk of project development failure. 3. Poor versatility and waste of resources: The 4G-related designs (including antenna and motherboard integration solutions) of each model cannot be reused. When developing new models, the design and debugging of 4G modules must be repeatedly invested, resulting in a waste of R&D resources and hindering rapid product iteration and cost control.

[0004] In summary, existing dashcams equipped with 4G functionality still have the aforementioned shortcomings and cannot adequately meet people's urgent needs for stable performance and strong versatility. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of current dash cams with 4G functionality in terms of poor performance stability and versatility, and to provide a 4G dash cam with a separate communication module.

[0006] The objective of this utility model is achieved through the following technical solution: a 4G dashcam with a separate communication module, comprising an independent and electrically connected 4G communication function module unit and a dashcam host unit; the 4G communication function module unit includes an upper housing and an upper motherboard assembly fixed within the upper housing, the upper motherboard assembly integrating at least one 4G communication function module; the dashcam host unit includes a lower housing and a lower motherboard assembly fixed within the lower housing, the lower motherboard assembly integrating a non-4G communication function module of the dashcam; the upper motherboard assembly and the lower motherboard assembly are connected for data transmission and power supply via an FPC cable.

[0007] Furthermore, the upper housing is composed of an upper bottom shell, an upper top shell, and a connecting piece; the bottom surface of the connecting piece is detachably connected to the upper top shell through a snap-fit ​​structure; the upper main board assembly is fixed to the inner wall of the upper bottom shell by screws or clips.

[0008] The lower housing consists of a lower bottom shell and a lower outer shell; the lower outer shell is fixedly connected to the lower bottom shell, and the recorder host unit can rotate up and down relative to the 4G communication function module unit around the connection end of the FPC cable and the lower motherboard assembly.

[0009] As a preferred approach, the motherboard assembly also integrates one or both of the following: a GPS positioning module and a Wi-Fi wireless communication module.

[0010] The non-4G communication function modules include a camera module, a local storage module, a video processing module, a power supply module, and a sensor module; the sensor module is at least one of a collision sensor and a gravity sensor.

[0011] To achieve better heat dissipation, an insulating heat dissipation layer is wrapped around the surface of the FPC cable.

[0012] The inner wall of the upper bottom shell is provided with several heat dissipation ribs extending vertically. The heat dissipation ribs are made of aluminum alloy and are attached to the surface of the upper motherboard assembly.

[0013] The outer wall of the lower shell is provided with a lens opening corresponding to the camera module, and a waterproof and dustproof glass lens is installed at the lens opening.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) This utility model integrates the 4G communication function module and the non-4G communication function module into separate upper and lower motherboard components, and places them in the independent 4G communication function module unit and recorder host unit, breaking the structural limitation of the traditional dashcam "multiple modules integrated on the same motherboard", which physically separates the heat-generating components, significantly reduces the temperature rise of a single component, effectively avoids problems such as 4G network disconnection and unexpected device restart caused by high temperature, and greatly improves the reliability of 4G communication function and the overall stability of device operation.

[0015] (2) The mainboard assembly and 4G communication module unit of this utility model can be used as a general structure. When developing different models of dashcams, it is not necessary to design the circuit layout and antenna scheme of the 4G module separately for each model. It is only necessary to adapt the non-4G function module of the dashcam host unit. This design saves the repetitive 4G module debugging workload, reduces the difficulty of development, reduces the development cost, and shortens the development cycle of new models, thereby reducing the risk of project failure.

[0016] (3) The upper motherboard assembly of this utility model can be additionally integrated with general function modules such as GPS positioning module and Wi-Fi wireless communication module, so that the 4G communication function module unit has multi-scenario adaptability, which can not only meet the basic 4G communication needs, but also expand the positioning, wireless connection and other functions according to user needs; and the general unit can be reused in different models of dashcam products, which improves the universality of components, reduces the waste of R&D resources, and facilitates rapid product iteration and upgrading.

[0017] (4) The 4G communication function module unit of this utility model is fixed to the windshield of the car by the adhesive on the connecting piece, which is convenient and stable to install. At the same time, the recorder host unit can rotate up and down around the connection end of the FPC cable and the lower motherboard component. Users can flexibly adjust the camera tilt angle according to actual shooting needs to ensure that the shooting field of view covers the key area and improve the ease of use.

[0018] (5) The insulating heat dissipation layer covering the surface of the FPC cable of this utility model can not only isolate external interference and avoid signal disorder during data transmission, ensuring the stability and security of 4G communication data and video data transmission, but also help to disperse the heat of the cable and connection parts; in addition, the aluminum alloy heat dissipation ribs on the inner wall of the bottom shell of the 4G communication function module unit are attached to the upper motherboard assembly, which can quickly dissipate the heat generated by the upper motherboard assembly during operation, further optimizing the overall heat dissipation effect of the equipment and indirectly improving the service life of each module. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0021] The following are the names of the reference numerals in the attached figures: 1-Upper shell, 2-Lower shell, 3-Upper motherboard assembly, 4-Lower motherboard assembly, 5-FPC cable, 11-Upper bottom shell, 12-Upper top shell, 13-Connecting piece, 21-Lower bottom shell, 22-Lower bottom shell. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0023] Example

[0024] like Figure 1 , 2 As shown in the figure, the 4G dashcam with a separate communication module described in this embodiment mainly includes an independent but electrically connected 4G communication function module unit and a dashcam host unit. The 4G communication function module unit serves as the "remote connection and data interaction core" of the dashcam, its core function being to achieve interconnection and interoperability between the device and the cloud, and user terminals (such as mobile phones) via the 4G network, while also undertaking the functions of general function integration and stable installation. The dashcam host unit serves as the "local data acquisition, processing, and storage core" of the dashcam, its core function being to complete the acquisition, processing, and local storage of video and audio data during driving, and to provide users with flexible usage and adjustment functions.

[0025] The 4G communication function module unit includes an upper housing 1 and an upper motherboard assembly 3 fixed inside the upper housing 1, and the upper motherboard assembly 3 integrates at least one 4G communication function module. This 4G communication function module unit can establish a stable connection with a 4G network through the 4G communication function module, providing a remote data transmission channel for the dashcam and supporting key functions such as real-time monitoring, emergency alarms, and cloud storage. In addition to integrating the 4G communication function module on the upper motherboard assembly 3, this embodiment can also integrate one or both of a GPS positioning module and a Wi-Fi wireless communication module on the upper motherboard assembly 3 to enable positioning and wireless network connectivity. With the above configuration, the 4G communication function module unit can transmit accident scene videos, vehicle GPS location, and other information to the user's mobile phone or rescue platform in real time via the 4G network, or receive remote control commands issued by the user through a mobile APP.

[0026] The upper housing 1 consists of an upper bottom housing 11, an upper top housing 12, and a connecting piece 13. The bottom surface of the connecting piece 13 is detachably connected to the upper top housing 12 via a snap-fit ​​structure, while the upper mainboard assembly 3 is fixed to the inner wall of the upper bottom housing 11 by screws or clips. 3M adhesive is adhered to the upper surface of the connecting piece for fixing the 4G communication function module unit to the inner surface of the car's windshield.

[0027] To ensure good heat dissipation performance, this embodiment may also provide several vertically extending heat dissipation ribs on the inner wall of the upper bottom shell 11 (this structure is not shown in the accompanying drawings). These heat dissipation ribs are preferably made of aluminum alloy, and all heat dissipation ribs need to be in contact with the surface of the upper motherboard assembly 3.

[0028] The main unit of the recorder serves as the "local data acquisition, processing and storage core" of the dashcam. Its core function is to complete the acquisition, processing and local storage of video, audio and other data during driving, and to provide users with flexible usage and adjustment functions.

[0029] The dashcam main unit includes a lower housing 2 and a lower motherboard assembly 4 fixed inside the lower housing 2. The lower motherboard assembly 4 integrates functional modules for the dashcam's non-4G communication functions. These non-4G communication functional modules refer to the set of modules in the dashcam, excluding the "4G communication functional module," that ensure its core functions such as basic driving recording, local data processing and storage, and device operation control. These functional modules can include at least the following categories: 1. A camera module, used to collect real-time video and audio data from the vehicle's path, serving as the original data source for subsequent data processing, storage, and transmission. 2. A local storage module, responsible for local data backup and temporary storage, typically achieved through an adapter such as an SD card. It stores video and audio data collected by the camera module, preventing the loss of critical data due to 4G network interruptions or cloud storage anomalies. This addresses the fundamental need of traditional dashcams relying on local storage, while simultaneously forming a "local + cloud" dual guarantee with cloud storage. 3. Video Processing Module: Responsible for technically processing the raw video and audio data collected by the camera module, including video encoding and image quality optimization. This ensures that the processed data meets both local storage efficiency requirements and bandwidth requirements for transmission to the cloud via the 4G communication module, guaranteeing data availability for subsequent use (such as playback and accident evidence collection). 4. Power Supply Module: Provides power to all non-4G functional modules within the recorder's main unit (camera, local storage, video processing, sensors, etc.) and the 4G communication module in mainboard component 3. 5. Sensor Module: Used to monitor vehicle operating status and emergencies. It typically includes one or a combination of collision sensors and gravity sensors. For example, when a collision, scrape, or sudden acceleration / braking occurs, the sensor module can trigger a signal, linking the video processing module and local storage module to lock video data from critical periods (preventing it from being overwritten). Simultaneously, it provides a trigger signal for the 4G communication module to trigger an "emergency alarm," making it a crucial auxiliary module for proactive accident response.

[0030] In addition, non-4G communication modules may also include auxiliary modules to ensure local operation and status feedback of the device, such as physical button control modules and indicator light status display modules. These modules together constitute the basic functional system of a dashcam that can function normally without relying on 4G communication, complementing the 4G communication module. They retain the core capabilities of traditional dashcams while achieving intelligent upgrades through cooperation with the 4G communication module.

[0031] The lower housing 2 is composed of a lower bottom housing 21 and a lower bottom housing 22. The lower bottom housing 22 is fixedly connected to the lower bottom housing 21. The upper motherboard assembly 3 and the lower motherboard assembly 4 are connected for data transmission and power supply via an FPC cable 5. That is, the recorder host unit can rotate up and down relative to the 4G communication function module unit around the connection end of the FPC cable 5 and the lower motherboard assembly 4 to adjust the shooting tilt angle of the camera on the recorder host unit.

[0032] The FPC cable 5 mentioned above is a flexible printed circuit cable, which is a flexible connection line for transmitting electrical signals and supplying power by printing conductive lines on a substrate through etching and other processes. In this embodiment, in addition to using the FPC cable 5 as the connection component between the upper motherboard assembly 3 and the lower motherboard assembly 4, flexible flat cable (FFC) or micro coaxial cable can also be used as alternatives.

[0033] To further enhance the insulation performance (preventing signal interference) and heat dissipation capacity (aiding in dispersing heat at connection points) of this FPC cable 5 and ensure transmission stability, this embodiment also coats the surface of the FPC cable 5 with an insulating heat dissipation layer. This insulating heat dissipation layer is preferably made of polyimide.

[0034] Meanwhile, to ensure that this embodiment can achieve a better waterproof effect, a lens opening corresponding to the camera module is provided on the outer wall of the lower shell 21, and a waterproof and dustproof glass lens is installed at the lens opening.

[0035] As described above, this utility model can be well realized.

Claims

1. A 4G dashcam with a separate communication module, characterized in that, The system includes an independent but electrically connected 4G communication function module unit and a recorder host unit; the 4G communication function module unit includes an upper housing (1) and an upper motherboard assembly (3) fixed inside the upper housing (1), the upper motherboard assembly (3) having at least one 4G communication function module integrated on it; the recorder host unit includes a lower housing (2) and a lower motherboard assembly (4) fixed inside the lower housing (2), the lower motherboard assembly (4) having a non-4G communication function module integrated on it; the upper motherboard assembly (3) and the lower motherboard assembly (4) are connected for data transmission and power supply via an FPC cable (5).

2. A 4G dashcam with a separate communication module as described in claim 1, characterized in that, The upper housing (1) is composed of an upper bottom housing (11), an upper top housing (12) and a connecting piece (13); the bottom surface of the connecting piece (13) is detachably connected to the upper top housing (12) through a snap-fit ​​structure; the upper main board assembly (3) is fixed to the inner wall of the upper bottom housing (11) by screws or clips.

3. A 4G dashcam with a separate communication module according to claim 2, characterized in that, The lower housing (2) is composed of a lower bottom shell (21) and a lower bottom shell (22); the lower bottom shell (22) is fixedly connected to the lower bottom shell (21), and the recorder host unit can rotate up and down around the connection end of the FPC cable (5) and the lower motherboard assembly (4) relative to the 4G communication function module unit.

4. A 4G dashcam with a separate communication module according to any one of claims 1 to 3, characterized in that, The motherboard component (3) also integrates one or both of the following: a GPS positioning module and a Wi-Fi wireless communication module.

5. A 4G dashcam with a separate communication module according to claim 3, characterized in that, The non-4G communication function modules include a camera module, a local storage module, a video processing module, a power supply module, and a sensor module; the sensor module is at least one of a collision sensor and a gravity sensor.

6. A 4G dashcam with a separate communication module according to claim 1, characterized in that, The surface of the FPC cable (5) is covered with an insulating heat dissipation layer.

7. A 4G dashcam with a separate communication module according to claim 2, characterized in that, The inner wall of the upper bottom shell (11) is provided with several heat dissipation ribs extending in the vertical direction. The heat dissipation ribs are made of aluminum alloy and are attached to the surface of the upper motherboard assembly (3).

8. A 4G dashcam with a separate communication module according to claim 5, characterized in that, The outer wall of the lower shell (21) is provided with a lens opening corresponding to the camera module, and a waterproof and dustproof glass lens is installed at the lens opening.

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