CN219145487U

CN219145487U - Vehicle-mounted camera capable of rapidly conducting heat

Info

Publication number: CN219145487U
Application number: CN202223352624.9U
Authority: CN
Inventors: 杨应贤
Original assignee: Chongqing Tianshi Automobile Electronics Co ltd
Current assignee: Chongqing Tianshi Automobile Electronics Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-06-06
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a vehicle-mounted camera capable of rapidly conducting heat, which is characterized in that: including camera lens, protecgulum, sensor PCB, ISP PCB, heat conduction device, power PCB, back lid, connector, wherein protecgulum and back lid are to buckling connection, sensor PCB, ISP PCB, heat conduction device, power PCB all set up in the inside cavity that protecgulum and back lid constitute, sensor PCB sets up in the dead over rear of camera lens, ISP PCB sets up in the rear of sensor PCB, heat conduction device directly laminates the chip position at ISP PCB rear, power PCB hugs closely the back lid setting, be provided with the second screw on the heat conduction device, the second screw passes behind the power PCB and locks to be paid to the back lid. The beneficial effects of the utility model include: after heat is quickly dissipated through the rear cover through the heat conducting device, the internal temperature of the camera module can be effectively reduced to be lower than the junction temperature of the chip, and the internal temperature and the external temperature of the camera module are basically balanced.

Description

Vehicle-mounted camera capable of rapidly conducting heat

Technical Field

The utility model relates to the field of cameras, in particular to a vehicle-mounted camera capable of rapidly conducting heat.

Background

At present, a vehicle-mounted camera module with an image processing (ISP) function has large power consumption during working, and the high heat of electronic elements influences the service life of products and the image quality.

At present, a camera module mainly dissipates heat in the following way:

(1) the camera module adopts a large-size metal shell. The inside PCBA of camera module adopts 2 boards or 3 board designs, and the heat of electronic chip on the PCB board mainly contacts with the shell through PCB board limit, and the rethread contact surface will heat conduction dispel the heat to the shell on.

The problems are that:

(1) the heat dissipation efficiency is low: the PCB board and the shell can only be contacted with the shell through a small amount of contact surface on the board edge, the electronic chip is often in the middle area of the PCB board, heat generated by the electronic chip is required to be transferred into the PCB board firstly, then the PCB board transfers the heat to the surface of the shell through the contact surface of the shell for heat dissipation, the heat conduction path is too long, the heat dissipation effect of the shell is poor, and the internal and external temperature difference of the camera module is large.

(2) The service life of the product is low: the temperature of the chip in the product exceeds the junction temperature of the chip, and the chip runs under overload for a long time, so that the service life of the chip is reduced.

(3) The quality of the product image is poor: after the internal temperature of the product is too high, the image quality of the product is deteriorated, for example: the resolution is reduced, the thermal noise is serious in a dark environment, the image is color cast and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the vehicle-mounted camera capable of rapidly conducting heat, which has good heat dissipation effect, and the heat of the internal heating elements can be rapidly conducted to the shell, so that the heat superposition among the internal heating elements is less.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a vehicle-mounted camera of quick conduction heat which characterized in that: including camera lens, protecgulum, sensor PCB, ISP PCB, heat conduction device, power PCB, back lid, connector, wherein the protecgulum with the back lid is to the lock be connected, sensor PCB, ISP PCB, heat conduction device, power PCB all set up in the inside cavity that protecgulum and back lid are constituteed, the camera lens set up in the protecgulum front end, the sensor PCB set up in the just right rear of camera lens, ISP PCB set up in the rear of sensor PCB, just the sensor PCB with have between the ISP PCB and be provided with the copper post for the sensor PCB with the ISP PCB keeps predetermined distance, heat conduction device set up in ISP PCB rear, heat conduction device direct laminating the chip position at ISP PCB rear, the power PCB set up in heat conduction device's rear, the power is hugged closely the back lid sets up, be provided with the second on the heat conduction device, the power pass the power PCB pay the lock to be in behind the cover behind the connection of the PCB.

Further, a first screw is arranged on the ISP PCB, and the first screw sequentially penetrates through the copper column and the sensor PCB and then is locked on the front cover.

Further, copper rings are embedded in the locking holes of the sensor PCB and the ISP PCB, and the copper rings are tightly matched with the shaft necks at the two ends of the copper column.

Further, a sealing ring is arranged between the buckling surfaces of the front cover and the rear cover.

Further, the heat conduction device is a copper plate, the middle part of the heat conduction device arches towards one side of the ISP PCB, and a heat conduction medium is arranged between the heat conduction device and the chip part of the ISP PCB.

Further, the outer surface of the rear cover is provided with a heat dissipation bone with a concave-convex structure.

The beneficial effects of the utility model include: after heat is quickly dissipated through the rear cover through the heat conducting device, the internal temperature of the camera module can be effectively reduced to be lower than the junction temperature of the chip, and the internal temperature and the external temperature of the camera module are basically balanced. After the internal temperature of the camera module is reduced, the image quality, thermal noise, color cast and other phenomena of the camera module in a high-temperature environment can be effectively improved, the function of the camera module is ensured, and the service life of a product is prolonged.

Drawings

FIG. 1 is an internal block diagram of the present utility model;

fig. 2 is an exploded view of fig. 1.

Detailed Description

The utility model will be described in further detail with reference to specific embodiments and drawings.

A vehicle-mounted camera capable of rapidly conducting heat as shown in fig. 1-2, which comprises a lens 1, a front cover 2, a sensor (image sensor) PCB3, an ISP (image processing unit) PCB4, a heat conducting device 5, a power PCB6, a rear cover 7 and a connector 8. The front cover 2 and the rear cover 7 are connected by aiming at buckling, the front cover 2 and the rear cover 7 jointly form a shell of the camera, and a sealing ring 12 is arranged between buckling surfaces of the front cover 2 and the rear cover 7. An internal cavity is provided between the front cover 2 and the rear cover 7. The sensor PCB3, ISP PCB4, heat conducting device 5 and power PCB6 are all arranged in the inner cavity formed by the front cover 2 and the rear cover 7. The lens 1 is disposed at the front end of the front cover 2, and the front part thereof extends out of the front cover 2.

The sensor PCB3 is arranged right behind the lens 1 and is used for receiving light rays emitted into the lens. The ispcb 4 is disposed at the rear of the sensor PCB3, and a copper pillar 9 is disposed between the sensor PCB3 and the ISP PCB4, so that the sensor PCB3 and the ISP PCB4 maintain a predetermined distance, a heat dissipation space is formed between the two heat-generating PCBs, heat superposition is reduced, a first screw 11 is disposed on the ISP PCB4, and the first screw 11 sequentially passes through the copper pillar 9 and the sensor PCB3 and is then locked to the front cover 2. Copper rings are embedded in the locking holes of the sensor PCB3 and the ISP PCB4, and the copper rings are tightly matched with the shaft necks at the two ends of the copper column 9. Whereby part of the heat on the sensor PCB3, ISP PCB4 can be directly conducted to the front cover 2 through the screw locking holes and the copper posts 9.

In this embodiment, the chip in the middle of the back of the ISP PCB4 is a high-power heating element, so in this embodiment, the heat conducting device 5 is disposed behind the ISP PCB4, the heat conducting device 5 is directly attached to the chip portion behind the ISP PCB4, the heat conducting device 5 is a copper plate, the middle of the heat conducting device 5 arches toward one side of the ISP PCB4, and a heat conducting medium 13, such as silicone grease, is disposed between the heat conducting device 5 and the chip portion of the ISP PCB 4. The power PCB6 is arranged at the rear of the heat conducting device 5, the power PCB6 is closely attached to the rear cover 7, the heat conducting device 5 is provided with a second screw 10, the second screw 10 penetrates through the power PCB6 and is locked on the rear cover 7, and the connector 8 is arranged at the rear of the rear cover 7. The heat conduction device 5 and the locking holes of the power PCB6 are arranged at the edge part, so that the heat of the high-power heating element is directly conducted to the rear cover 7 through the heat conduction device 5 for heat dissipation.

Further, the outer surface of the rear cover 7 is provided with a heat dissipation bone with a concave-convex structure, which is favorable for increasing the heat dissipation area and achieving the effect of rapid heat dissipation, and the front cover 2 and the rear cover 7 in the embodiment are made of high heat conduction aluminum alloy, so that the heat conduction coefficient is high and the heat dissipation is rapid.

The foregoing has described in detail the technical solutions provided by the embodiments of the present utility model, and specific examples have been applied to illustrate the principles and implementations of the embodiments of the present utility model, where the above description of the embodiments is only suitable for helping to understand the principles of the embodiments of the present utility model; meanwhile, as for those skilled in the art, according to the embodiments of the present utility model, there are variations in the specific embodiments and the application scope, and the present description should not be construed as limiting the present utility model.

Claims

1. The utility model provides a vehicle-mounted camera of quick conduction heat which characterized in that: comprises a lens (1), a front cover (2), a sensor PCB (3), an ISP PCB (4), a heat conduction device (5), a power PCB (6), a rear cover (7) and a connector (8), wherein the front cover (2) and the rear cover (7) are connected aiming at buckling, the sensor PCB (3), the ISP PCB (4), the heat conduction device (5) and the power PCB (6) are all arranged in an internal cavity formed by the front cover (2) and the rear cover (7), the lens (1) is arranged at the front end of the front cover (2), the sensor PCB (3) is arranged at the right rear of the lens (1), the ISP PCB (4) is arranged at the rear of the sensor PCB (3), a copper column (9) is arranged between the sensor PCB (3) and the ISP PCB (4), the heat conduction device (5) is arranged in an internal cavity formed by the front cover (2) and the rear cover (7), the heat conduction device (5) is arranged at the rear of the ISP PCB (4), the heat conduction device (5) is directly attached to the back of the ISP PCB (5), the second screw (10) is locked on the rear cover (7) after penetrating through the power PCB (6), and the connector (8) is arranged at the rear part of the rear cover (7).

2. The vehicle-mounted camera for rapidly conducting heat according to claim 1, wherein: the ISP PCB (4) is provided with a first screw (11), and the first screw (11) sequentially penetrates through the copper column (9) and the sensor PCB (3) and is then locked on the front cover (2).

3. The vehicle-mounted camera for rapidly conducting heat according to claim 2, wherein: copper rings are embedded in the locking holes of the sensor PCB (3) and the ISP PCB (4), and the copper rings are tightly matched with the shaft necks at the two ends of the copper column (9).

4. The vehicle-mounted camera for rapidly conducting heat according to claim 1, wherein: a sealing ring (12) is arranged between the buckling surfaces of the front cover (2) and the rear cover (7).

5. The vehicle-mounted camera for rapidly conducting heat according to claim 1, wherein: the heat conduction device (5) is a copper plate, the middle part of the heat conduction device (5) arches towards one side of the ISP PCB (4), and a heat conduction medium (13) is arranged between the heat conduction device (5) and a chip part of the ISP PCB (4).

6. The vehicle-mounted camera for rapidly conducting heat according to claim 1, wherein: the outer surface of the rear cover (7) is provided with a heat dissipation bone with a concave-convex structure.