CN108111718B

CN108111718B - Vehicle-mounted camera module

Info

Publication number: CN108111718B
Application number: CN201711174076.6A
Authority: CN
Inventors: 维亚切斯拉夫·斯米尔诺夫
Original assignee: Samsung Electro Mechanics Co Ltd
Current assignee: Samsung Electro Mechanics Co Ltd
Priority date: 2016-11-25
Filing date: 2017-11-22
Publication date: 2021-03-09
Anticipated expiration: 2037-11-22
Also published as: KR20180059063A; CN207560143U; CN108111718A; KR102620540B1

Abstract

The invention discloses a vehicle-mounted camera module, which comprises: an upper housing; a lower housing combined with the upper housing to form an inner space; and a circuit board fixed to the upper case so as to be disposed in the internal space, wherein a heat conductive member made of a metal material is molded by insert injection in the lower case, at least one portion of the heat conductive member is exposed to the internal space, and at least another portion of the heat conductive member is exposed to the outside.

Description

Vehicle-mounted camera module

Technical Field

The invention relates to a vehicle-mounted camera module.

Background

Recently, it is expected that a large number of cameras, such as a rear camera and a Surround View Monitoring (SVM) camera, will be mounted in a vehicle as a camera for Advanced driver assistance system (ASAS), and that a variety of cameras for performing various functions will be mounted in the vehicle in the future.

However, the reason why the vehicle-mounted camera that is currently developed to be distributed in the market is actually larger in size and higher in price than the camera used in the mobile electronic device is as follows: as compared with a camera used in a mobile electronic device, there is a small demand for miniaturization, and as compared with this, the reliability of the start-up is more important, and therefore, research and development on reliability have been actively conducted.

However, the number of cameras used for one automobile has recently increased, and demands for high-performance cameras have been raised more than ever.

[ Prior art documents ]

[ patent document ]

(patent document 1) Korean patent No. 1301432

Disclosure of Invention

As described above, the application of the in-vehicle camera is increasing, and the present invention aims to provide a camera module which can realize high performance of the in-vehicle camera and can effectively discharge the heat inside to the outside.

According to the present invention, there is provided a vehicle-mounted camera module, comprising: an upper housing; a lower housing combined with the upper housing to form an inner space; and a circuit board fixed to the upper case to be disposed in the internal space, wherein a heat conductive member made of a metal material is molded by insert injection in the lower case, at least one portion of the heat conductive member is exposed to the internal space, and at least another portion of the heat conductive member is exposed to the outside.

Also, according to another embodiment of the present invention, there is provided a vehicle-mounted camera module including: an upper housing; a lower housing combined with the upper housing to form an inner space; and a circuit board fixed to the upper case so as to be disposed in the internal space, wherein a heat conductive member made of a metal material is molded by insert molding in the upper case, at least one portion of the heat conductive member is exposed to the internal space, and at least another portion of the heat conductive member is exposed to the outside, and the circuit board is fixed to the upper case so as to be in contact with the heat conductive member.

With the vehicle-mounted camera module according to the embodiment of the present invention, it is possible to efficiently discharge heat that may be generated inside to the outside through a simple structural addition.

The present invention can effectively control the internal heat generation of the vehicle-mounted camera by adding a simple structure.

Further, since there is no substantial change in the outer shape, the structure can be easily applied.

Drawings

Fig. 1 is a sectional view of a vehicle-mounted camera module according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of a vehicle-mounted camera module according to an embodiment of the present invention.

Fig. 3 is a sectional view of a vehicle-mounted camera module according to another embodiment of the present invention.

Fig. 4 is a sectional view of a vehicle-mounted camera module according to another embodiment of the present invention.

Fig. 5 is a sectional view of a vehicle-mounted camera module according to another embodiment of the present invention.

Fig. 6 is a sectional view of a vehicle-mounted camera module according to another embodiment of the present invention.

Description of the symbols

100. 101, 102, 103, 104, 105: vehicle-mounted camera module

110: upper shell

150: lower casing

190: lens barrel

Detailed Description

The objects, specific advantages and novel features of the invention will become apparent from the following detailed description of preferred embodiments when considered in conjunction with the drawings. In the present specification, it should be noted that, when reference numerals are attached to components of respective drawings, if the components are the same, the same reference numerals are provided as much as possible in different drawings. In describing the present invention, when it is determined that a detailed description of a known technology may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted.

Hereinafter, preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.

Fig. 1 and 2 are sectional views of a vehicle-mounted camera module according to an embodiment of the present invention.

Referring to fig. 1, a vehicle camera module 100 according to one embodiment of the present invention is disclosed.

The vehicle-mounted camera module 100 according to one embodiment includes: an upper housing 110; and a lower case 150 combined with the upper case 110 to form an inner space 111. Further, the upper case 110 itself may include a lens array (lens array) having at least one lens, or may be separately mounted with a lens barrel 190 having at least one lens. For convenience of explanation, only the latter case is illustrated in the following description and drawings.

The upper case 110 and the lower case 150 are combined with each other to form an inner space 111, and various components for driving the camera are provided in the inner space 111. In addition, the upper housing 110 and the lower housing 150 are generally made of plastic. The plastic material has the defect of poor heat-conducting property.

First, the lens barrel 190 having at least one lens is coupled to an upper portion of the upper case 110. That is, the upper case 110 is located in the object (object) direction with respect to the lower case 150, and light enters the internal space 111 through the lens provided in the lens barrel 190.

In the internal space 111, an image sensor 113 for sensing light entering through the lens barrel 190 as an image is provided, and the image sensor 113 is attached to the circuit board 112. The circuit board 112 is fixed in a shape hung on the upper case 110 and provided in the internal space 111.

Although not shown in the drawing, the lens barrel 190 or the upper case 110 may be provided with a filter (not shown) for filtering light entering through the lens. The optical filter portion (not shown) may be an infrared filter, for example.

The circuit board 112 is a double-sided board, and may have an upper surface provided with sensors necessary for expressing optical performance, such as an image sensor 113, and a lower surface to which various chips for controlling the camera module, such as various passive elements, active elements, and IC chips, are attached. Of course, this is not limitative, and various applications can be realized according to the design of the camera module and the like.

Also, the upper case 110 and the lower case 150 may be welded by ultrasonic welding. Accordingly, the waterproof performance can be further provided. Of course, the coupling of the upper case 110 and the lower case 150 is not limited thereto, and various mechanical coupling methods such as hook coupling, bolt coupling, adhesive coupling, screw coupling, press-fitting coupling, and the like may be employed.

In addition, the upper case 110 and the lower case 150 are coupled to form the inner space 111, and at least a portion of the inner surface forming the inner space 111 or the inner space may be provided with a shield can (shield can)114 made of a metal material to shield electromagnetic waves and the like. Also, the shield can 114 may physically contact the circuit board 112, thereby performing a heat conduction function.

More specifically, the shield cover 114 may be provided in a surface forming the internal space 111 in a manner parallel to a side surface parallel to the optical axis direction. In particular, the shield cover 114 may be configured to cover all of the positions corresponding to the side surfaces of the circuit board 112. The shield cover 114 may be attached to an inner wall of the upper case 110 or the lower case 150, or fixed to the upper case 110 or the lower case 150 to protrude into the inner space 111.

Lens barrel 190 is adhesively bonded by an adhesive in a state where a part thereof is inserted through upper through hole 115 of upper housing 110, or may be screwed into through hole 115 by a screw provided on the outside of lens barrel 190.

In addition, in the camera module having the above-described structure, heat is generated by various components of the circuit board attached inside, but no components for discharging such heat to the outside are provided.

Referring to fig. 2, a vehicle camera module 101 according to one embodiment of the present invention is disclosed.

With the on-vehicle camera module 101 according to an embodiment, when compared with the above-described camera module 100, there are differences in the following: the vehicle-mounted camera module 101 according to one embodiment has a constituent element capable of efficiently discharging heat that may be generated in the internal space to the outside. Since the other components are the same, the same reference numerals are used and detailed description is omitted.

Referring to fig. 2, in the lower case 150 of the in-vehicle camera module 101 according to an embodiment, a heat conductive member 151 of a metal material is molded (molded) by insert molding, and at least one portion of the heat conductive member 151 is exposed to the internal space 111 and at least another portion is exposed to the outside.

Therefore, as shown in the drawing, a part of the lower case 150 is changed to a heat conductive member 151 having excellent heat conductivity by insert molding, thereby facilitating heat discharge. The heat conductive member 151 may be, for example, aluminum (Al), and any metal having excellent heat conductivity may be used.

That is, since the heat conductive member 151 is made of a material having excellent heat conductivity and has a portion in contact with the internal space 111 and a portion in contact with the external space, the heat of the internal space 111 can be effectively discharged to the outside.

Here, the heat conductive member 151 may be provided at least in a part of the bottom and the side wall (not shown) of the lower case 150.

Further, with the in-vehicle camera module 101 according to the present embodiment, the shield cover 114 provided in the internal space 111 can be utilized as a heat transfer member. That is, a part of the shield cover 114 is in surface contact with the side surface of the circuit board 112, and another part of the shield cover 114 is in surface contact with the heat conductive member 151, thereby contributing to heat dissipation.

In this case, when the heat conductive member 151 is provided on the side surface of the lower case 150, surface contact can be easily made with the shield cover 114, wherein the shield cover 114 is provided in parallel with the optical axis direction. However, in the case where the heat conductive member 151 is provided at the bottom of the lower case 150, the lower end portion of the shield cover 114 may be folded (114a) in a direction perpendicular to the optical axis direction, thereby increasing the contact area with the heat conductive member 151.

Referring to fig. 3, a vehicle-mounted camera module 102 according to another embodiment of the present invention is different from the camera module 101 described with reference to fig. 2 in the following points: the vehicle-mounted camera module 102 according to another embodiment is equipped with a heat sink member 153 as an additional member that can be used to improve the applicability of the heat conductive member 151. Since the other components are the same, the same reference numerals are used and detailed description thereof is omitted.

Referring to fig. 3, in a lower case 150 of a vehicle-mounted camera module 102 according to another embodiment, a heat conductive member 151 of a metal material is molded by insert molding, and at least a part of the heat conductive member 151 is exposed to an inner space 111 and at least another part is exposed to the outside. The heat conductive member 151 is connected to a heat sink member 153 made of a heat conductive material provided in the internal space 111, and the heat sink member 153 is in contact with at least one of the circuit board, a passive element mounted on the circuit board 112, an active element, and an IC chip.

That is, the vehicle-mounted camera module 102 according to another embodiment is additionally provided with a heat sink part 153 in the inner space 111, one end of the heat sink part 153 is physically in contact with at least one of the circuit board 112 or the passive element, the active element, and the IC chip as the heat generating part, and the other end is in contact with the heat conductive part 151, thereby improving the heat conductive performance, and accordingly, the heat generating performance of the camera module.

The heat sink member 153 may be made of, for example, aluminum (Al), and any metal having excellent conductivity may be used.

Here, the heat sink member 153 and the heat conductive member 151 may be fixed to each other with the heat conductive adhesive 154 as a medium. The heat conductive adhesive 154 may be made of a material having elasticity, such as rubber. Accordingly, in the case where the heat sink member 153 is in contact with at least one of the circuit board 112 or the passive element, the active element, and the IC chip, the impact or the like applied to the elements can be absorbed by the thermally conductive adhesive 154, so that they can be prevented from being damaged or the like.

Further, in the in-vehicle camera module 102 according to the present embodiment, the shield cover 114 provided in the internal space 111 can be utilized as a heat transfer member. That is, a part of the shield cover 114 is in surface contact with the side surface of the circuit board 112, and another part of the shield cover 114 is in surface contact with the heat sink member 153, thereby contributing to heat dissipation.

Referring to fig. 4, a vehicle camera module 103 according to another embodiment of the present invention is disclosed.

The on-vehicle camera module 103 according to another embodiment differs from the camera module 100 described with reference to fig. 1 in the following points: the vehicle-mounted camera module 103 according to another embodiment has a constituent element capable of effectively discharging heat that may be generated in the internal space to the outside. Since the other components are the same, the same reference numerals are used and detailed description thereof is omitted.

Referring to fig. 4, in the upper case 110 of the vehicle camera module 103 according to another embodiment, a heat conductive member 121 of a metal material is molded by insert molding, and at least a portion of the heat conductive member 121 is exposed to the inner space 111 and at least another portion is exposed to the outside.

Therefore, as shown in the drawing, a part of the upper case 110 is changed to a heat conductive member 121 having excellent heat conductivity by insert molding, thereby facilitating heat dissipation. The heat conductive member 121 may be, for example, aluminum (Al), and any metal having excellent heat conductivity may be used.

That is, since the heat conductive member 121 is made of a material having excellent heat conductivity and has a portion in contact with the internal space 111 and a portion in contact with the external space, the heat of the internal space 111 can be effectively discharged to the outside.

Here, the heat conductive member 121 may be provided at least a part of or the entirety of the upper portion (upper wall) and the side wall of the upper case 110. For example, the upper case 110 may be formed in an elliptical shape or a round (round) shape along the inner circumference thereof.

The circuit board 112 may be fixed to the upper case 110 in a state of being in contact with the heat conductive member 121. Accordingly, heat generated in the circuit board 112 is conducted through the heat conductive member 121, and thus can be quickly discharged to the outside.

Further, with the in-vehicle camera module 103 according to the present embodiment, the shield cover 114 provided in the internal space 111 can be utilized as a heat transfer member. That is, a part of the shield cover 114 is in surface contact with the side surface of the circuit board 112, and another part of the shield cover 114 is in surface contact with the heat conductive member 121, thereby contributing to heat dissipation.

Further, according to the present embodiment, the lens barrel 190 may be provided at an upper portion of the upper housing 110, in which case the lens barrel 190 may be adhesively bonded to the heat conductive member 121. Even in this case, the heat conductive member 121 may have a portion exposed to the outside. For example, only the inner side of the heat conductive member 121 may be adhesively bonded, or only a part which is not the entire part may be adhesively bonded to the lens barrel 190 with an adhesive along the periphery of the heat conductive member 121.

Referring to fig. 5, a vehicle-mounted camera module 104 according to another embodiment of the present invention differs from the camera module 103 described with reference to fig. 4 in the following points: the vehicle-mounted camera module 104 according to another embodiment is equipped with the heat conductive extension member 123, and the heat conductive extension member 123 is an additional member that can be used to improve the applicability of the heat conductive member 121. Since the other components are the same, the same reference numerals are used and detailed description thereof is omitted.

Referring to fig. 5, in an upper case 110 of a vehicle-mounted camera module 104 according to another embodiment, a heat conductive member 121 made of a metal material is molded by insert molding, and at least a part of the heat conductive member 121 is exposed to an inner space 111 and at least another part is exposed to the outside. The heat conductive member 121 is connected to a heat conductive extension member 123 made of a heat conductive material provided in the internal space 111, and the heat conductive extension member 123 is in contact with the image sensor 113 mounted on the circuit board 112.

That is, in the vehicle-mounted camera module 104 according to another embodiment, the heat conductive extension member 123 is additionally provided in the inner space 111, one end of the heat conductive extension member 123 physically contacts the image sensor 113 of the circuit board 112 as a heat generating component, and the other end contacts the heat conductive member 121, thereby improving the heat conductive performance, whereby the heat generating performance of the camera module is improved.

For example, aluminum (Al) or the like can be used as the heat conductive extension member 123, and any metal having excellent heat conductivity can be used.

Here, the heat conductive extension member 123 and the heat conductive member 121 may be fixed to each other with a heat conductive adhesive (not shown) as a medium. The heat conductive adhesive (not shown) may be made of a material having elasticity, such as rubber. Accordingly, when the heat conductive extension member 123 is in contact with the image sensor 113 mounted on the circuit board 112, the heat conductive adhesive (not shown) absorbs the impact or the like applied thereto, and thus can be prevented from being damaged or the like.

Fig. 6 is a sectional view of a vehicle-mounted camera module according to still another embodiment of the present invention.

Referring to fig. 6, a vehicle-mounted camera module 105 according to still another embodiment of the present invention is different in that the vehicle-mounted camera module 105 includes all the features of the embodiments shown in fig. 3 and 5 when compared with the

camera modules

102, 104 described with reference to fig. 3 and 5. In other words, the vehicle-mounted camera module 105 of the present embodiment can include all of the heat conductive member 111 provided in the upper housing 110 and the heat conductive member 151 provided in the lower housing 150. Further, the vehicle-mounted camera module 105 of the present embodiment may further include: a heat conductive extension member 121 connected to the heat conductive member 111 provided in the upper case 110; and a heat sink member 153 connected to the heat conductive member 151 provided in the lower case 150. The other components are the same, and therefore the same reference numerals are given thereto, and detailed description thereof is omitted.

It is obvious to those skilled in the art that the present invention can be modified or improved within the scope of the technical idea of the present invention, and it is apparent that the present invention is described in detail by the embodiments, but the present invention is only disclosed for the purpose of specifically describing the present invention, and the camera module according to the present invention is not limited thereto.

While the invention has been described with reference to specific embodiments, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention.

Claims

1. A vehicle camera module, comprising:

an upper housing;

a lower housing combined with the upper housing to form an inner space; and

a circuit board fixed to the upper case to be provided in the inner space,

wherein, in the lower case, a heat conductive member made of a metal material is molded by insert injection, at least one part of the heat conductive member is exposed to the internal space, and at least another part of the heat conductive member is exposed to the outside,

a shield cover that covers a position corresponding to a side surface of the circuit board entirely and a part of which is in surface contact with the side surface of the circuit board is provided in the internal space,

the shield case is extended toward the heat conductive member and is used as a heat transfer member by being in surface contact with the heat conductive member forming surface or in surface contact with a heat sink member forming surface provided in the internal space and connected to the heat conductive member.

2. The vehicle camera module of claim 1,

and the circuit board is attached with an image sensor.

3. The vehicle camera module of claim 1,

at least one of a passive element, an active element, and an IC chip is mounted on the circuit board.

4. The vehicle camera module of claim 1,

the heat conductive member is provided in at least a part of the bottom and the side wall of the lower case.

5. The vehicle camera module of claim 1,

one end of the radiator component is connected to the heat-conducting component, and the other end of the radiator component is in contact with at least one of the circuit board or a passive element, an active element and an IC chip attached to the circuit board.

6. The vehicle camera module of claim 5,

the heat sink member is bonded to the heat conductive member with a heat conductive adhesive.

7. The vehicle camera module of claim 6,

the heat-conducting adhesive is made of elastic rubber.

8. The vehicle camera module of claim 1,

the upper housing is provided with a through hole, and a part of a lens barrel having at least one lens therein is inserted into the through hole.

9. The vehicle camera module of claim 8,

an image sensor is attached to an upper surface of the circuit board facing the through hole, and at least one of a passive element, an active element, and an IC chip is attached to a lower surface.

10. A vehicle camera module, comprising:

an upper housing;

a lower housing combined with the upper housing to form an inner space; and

a circuit board fixed to the upper case to be provided in the inner space,

wherein, in the upper housing, a first heat conductive member made of a metal material is molded by insert injection, at least one part of the first heat conductive member is exposed to the internal space, and at least another part of the first heat conductive member is exposed to the outside,

the circuit board is fixed to the upper case in such a manner as to be in contact with the first heat conductive member,

a shield cover configured to cover a position corresponding to a side surface of the circuit board entirely and a part of which is in surface contact with the side surface of the circuit board is provided in the internal space,

the shield case extends toward the first heat conductive member and is used as a heat transfer member in surface contact with the first heat conductive member.

11. The vehicle camera module of claim 10,

the first heat conductive member is provided in at least a part of the upper wall and the side wall of the upper case.

12. The vehicle camera module of claim 10,

a thermally conductive extension member is provided in the interior space,

one end of the heat conduction extension component is connected to the first heat conduction component, and the other end of the heat conduction extension component is in contact with an image sensor attached to the circuit board.

13. The vehicle camera module of claim 12,

the heat conductive extension member is coupled to the first heat conductive member by a heat conductive adhesive.

14. The vehicle camera module of claim 13,

the heat-conducting adhesive is made of elastic rubber.

15. The vehicle camera module according to claim 10, wherein in the lower housing, a second heat-conductive member made of a metal material is molded by insert molding, and at least a part of the second heat-conductive member is exposed to the internal space and at least another part is exposed to the outside,

the other part of the shield case extends toward the second conductive member and is in surface contact with the second heat conductive member, or is in surface contact with a side surface of a heat sink member provided in the internal space and connected to the second heat conductive member.

16. The vehicle camera module according to claim 10, wherein the first thermal conductive member is provided in an elliptical shape or a circular shape along an inner periphery of the upper housing.