KR20180065504A - Camera - Google Patents

Abstract

The present invention relates to a camera which can enhance durability and can reduce the manufacturing costs. According to an aspect of the present invention, the camera comprises: a lens unit composed of one or more lenses to collect an image of an outer subject; a lens holder coupled to a rear surface of the lens unit; a substrate module coupled to a rear surface of the lens holder, and having various electronic components for driving installed therein; and a molding unit for exposing the lens, and covering the substrate module from the lens unit or the lens holder. One or more protrusions protruding from an outer surface are formed in an area of an outer surface of the lens unit or the lens holder to which the molding unit is coupled.

Description

Camera {Camera}

This embodiment relates to a camera.

In recent years, automobiles have been popularized, and the spread of automobiles has been rapidly spreading across various classes and ages.

The car is equipped with a black box camera for the protection of the vehicle or objective data of traffic accidents, a rear view of the vehicle which allows the driver to monitor the blind spot of the rear of the vehicle through the screen, Camera and the like.

FIG. 1 is a perspective view showing a disassembled state of a camera according to the related art, and FIG. 2 is a cross-sectional view showing a combined state of a substrate module of the camera of FIG.

1 and 2, a camera 1 according to the related art includes a housing 2 forming an outer appearance, a lens holder (not shown) forming a front surface of the camera 1, And a substrate module 3 disposed in the inner space of the housing 2 to transmit and receive signals and perform a control operation for driving.

A sealing portion 6 may be interposed between the housing 2 and the lens holder 4 to prevent foreign matter from entering the interior of the housing 2. [ The substrate module 3 may include a plurality of substrates that perform different functions, and the plurality of substrates may be disposed within the housing 2 to form a gap therebetween.

In detail, the plurality of substrates includes a flexible substrate (3a) to which both ends are connected to the edge of an adjacent substrate, a coupling screw (2) passing through a coupling hole (not shown) formed on the plurality of substrates, (3b).

As described above, the plurality of substrates can perform different functions. For example, the image sensor 9 may be mounted on a substrate disposed close to the lens 4 among the plurality of substrates. The board located on the rear side of the housing 4 may be coupled to the connector 7 for supplying power to the camera 1 or transmitting and receiving signals.

According to the camera 1 having the above configuration, there is a gap between the housing 2 and the lens holder 4 and around the hole on the housing 2 for fitting the connector 7, Dirt, foreign matter, and moisture can penetrate through the gap.

However, the foreign matter infiltrated into the interior of the housing 2 comes into contact with the various electronic components mounted on the substrate module 3 or the substrate module 3, thereby contaminating the respective components, There is a problem.

In addition, the housing 2 is generally made of a metal, an alloy, plastic, or the like, and a flexible substrate, a coupling screw, or the like is required to connect the plurality of substrates.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a camera with enhanced durability and lower manufacturing cost.

The camera according to the present embodiment includes: a lens unit consisting of at least one lens for collecting an image of an external subject; A lens holder coupled to a back surface of the lens unit; A substrate module coupled to a back surface of the lens holder, and mounting various electronic components for driving; And a molding unit that exposes the lens and surrounds the substrate module from the lens unit or the lens holder, wherein at a region of the outer surface of the lens unit or the lens holder where the molding unit is coupled, one or more projections .

A camera according to another embodiment includes: a lens unit including at least one lens for collecting an image of an external subject; A lens holder coupled to a back surface of the lens unit; A substrate module coupled to a back surface of the lens holder, and mounting various electronic components for driving; And a molding unit which exposes the lens and surrounds the substrate module from the lens unit or the lens holder, wherein the substrate module comprises: an image sensor for mounting an image sensor for converting an image of an object collected in the lens unit into an electric signal; 1 substrate; And at least one other substrate portion spaced apart from the first substrate portion by a predetermined distance, wherein a groove for inserting the image sensor is formed on a lower surface of the lens holder.

The present embodiment is advantageous in that the manufacturing cost of the product is low because no component for coupling each component or a component for internal sealing is required.

In addition, since the outer portion of the camera is enclosed by the molding resin, the path through which the moisture penetrates is removed, thereby increasing the waterproof efficiency.

In addition, since the lens part and the lens holder in which the molding part is formed are provided with the projections for increasing the surface area, the molding part is more firmly coupled to the lens part and the lens holder.

Further, since the substrate module can be coupled by the molding part, there is an advantage that the degree of freedom in designing the parts is increased.

1 is a perspective view showing an exploded view of a camera according to the related art.
FIG. 2 is a cross-sectional view showing a combined state of the substrate module of the camera of FIG. 1;
3 is a sectional view showing a configuration of a camera according to an embodiment of the present invention.
4 is a cross-sectional view showing a modification of the molding part in the camera of FIG. 3;
Fig. 5 is an enlarged view of a portion A in Fig. 3; Fig.
Fig. 6 is a cross-sectional view showing a portion B of Fig. 4 and a modified example of the protrusion. Fig.
7 is a sectional view showing a modified example of the bracket formed in the molding part according to the present invention.
8 is a cross-sectional view showing a screw groove formed in a molding part according to the present invention.
9 is a cross-sectional view showing a combination of a camera and a bracket according to the present invention.
10 is a sectional view showing a modification of the camera configuration according to the present invention.
11 is a sectional view showing a modified example of the lens holder according to the present invention.
12 is a sectional view showing a configuration of a camera according to a second embodiment of the present invention;
13 is a cross-sectional view showing a state in which a lens holder and a substrate unit are combined according to a second embodiment of the present invention.
14 is a sectional view of a substrate portion according to a second embodiment of the present invention;
FIG. 15 is a cross-sectional view showing a combined state of a substrate module according to a third embodiment of the present invention; FIG.
16 is a cross-sectional view showing a plurality of substrates according to a third embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. In describing the components in the drawings, the same components are denoted by the same reference numerals whenever possible, even if they are displayed on other drawings.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected, coupled, or connected to the other component, It should be understood that another element may be "connected", "coupled" or "connected" between elements.

FIG. 3 is a cross-sectional view illustrating a configuration of a camera according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view illustrating a modification of the molding part in the camera of FIG.

3, a camera 100 according to an embodiment of the present invention includes a lens unit 10 having a front glass 11 fitted therein, a lens holder 20 coupled to a rear surface of the lens unit 10, And a substrate module 30 mounted on the rear surface of the lens holder 20 and on which various electronic components for driving are mounted.

The lens unit 10 includes at least one lens for collecting an image of an external subject. A coupling portion 12 for coupling with the lens holder 20 is provided on the back surface of the lens portion 10. The engaging portion 12 may be formed such that a portion of the rear surface of the lens portion 10 protrudes rearward from the other region.

The coupling portion 12 is formed with a hollow therein so that at least one lens is inserted. Therefore, the external image incident through the glass 11 is gathered through the plurality of lenses and is transmitted to the rear.

The lens holder 20 is formed with a coupling hole 22 passing through the rear surface from the front and the coupling portion 12 is fitted into the coupling hole 22 to connect the lens portion 10 and the lens holder 20, . At this time, one or more protruding ribs may be formed on the outer circumferential surface of the engaging part 12, and the protruding ribs may be fitted into the grooves formed on the inner circumferential surface of the engaging hole.

The diameter of the lens portion 10 may be longer than the diameter of the lens holder 20 so that an edge region of the lens portion 10 may surround a part of the outer circumferential surface of the lens holder 20. The coupling portion 12 of the lens portion 10 protrudes from the back surface of the lens portion 10 and is inserted into the coupling hole 22 of the lens holder 20 as shown in FIG. A support groove 13 may be formed on the back surface of the lens unit 10 to surround a part of the outer circumferential surface of the lens holder 20.

The substrate module 30 is coupled to the back surface of the lens holder 20. In detail, the substrate module 30 may include a plurality of substrates 32, 34, 36, and 38 on which a plurality of electronic components for driving are mounted. The plurality of substrates 32, 34, 36, and 38 may be arranged at predetermined intervals on the back surface of the lens holder 20, and may be arranged in front and rear directions. However, the arrangement of the plurality of substrates 32, 34, 36, 38 shown is exemplary only and may be variously configured.

The plurality of substrates 32, 34, 36, and 38 may be electrically and physically coupled to each other. For example, between the first substrate 32 and the second substrate 34, between the second substrate 34 and the third substrate 36, and between the third substrate 36 and the fourth substrate 38 A plurality of flexible substrates (33, 35, 37) to which both ends are coupled may be disposed on each substrate to transmit and receive mutual electrical signals. The plurality of substrates 32, 34, 36 and 38 may be physically coupled by a coupling shaft 39 passing through the plurality of substrates 32, 34, 36 and 38 in the arranging direction. At this time, the coupling shaft 39 is spaced a predetermined distance between the plurality of substrates 32, 34, 36, and 38, thereby preventing electrical and physical collision between the electronic parts mounted on the respective substrates.

The first substrate 32 closest to the lens holder 20 among the plurality of substrates 32, 34, 36 and 38 is provided with an image for converting an image of a subject collected by the lens unit 10 into an electric signal, The sensor 31 is mounted. A cable unit 40 to be described later is coupled to the fourth substrate 38 disposed relatively far from the rear end of the plurality of substrates 32, 34, 36 and 38, that is, the lens holder 20 .

The cable unit 40 may be electrically connected to the board module 30 and may transmit an electrical signal corresponding to an image captured by the camera 100 to an external device. Also, through the cable unit 40, the camera 100 can be supplied with power for driving.

The camera 100 according to the embodiment of the present invention is characterized in that a molding unit 130 integrating the lens unit 10, the lens holder 20, .

The molding part 130 is formed on the side of the lens part 10 which is a region other than the glass 11 so that the lens of the lens part 10, that is, the glass part 11, (20), and the substrate module (30). Accordingly, the lens unit 10, the lens holder 20, and the substrate module 30 can be integrated. In addition, a part of the cable unit 40 may be wrapped around the molding unit 130.

In other words, the molding part 130 extends rearward from an area other than a surface of the outer surface of the lens part 10, which absorbs external light, to cover the lens holder 20 and the substrate module 30 It is understood that the housing of the camera 100 is formed.

3, the lens unit 10 is disposed on the front side of the camera and the cable unit 40 is disposed on the rear side of the camera. The molding unit 50 includes the lens unit 10, (20) and the substrate module (30) from the side of the lens holder (10).

Alternatively, as shown in FIG. 4, the molding unit 50 may extend rearwardly from the side surface of the lens holder 20 so as to surround the substrate module 30. At this time, a separate sealing member (not shown) may be provided in the boundary region between the lens unit 10 and the lens holder 20.

The material of the molding part 130 may be at least one selected from the group consisting of Resin, Epoxy curing agent, acrylic curing agent, silicone curing agent, urethane curing agent and UV (ultraviolet) May be included. The molding material 130 is cured to a solid state under a specific condition in a liquid state. The molding material 130 is attached to the mold holder 20, the substrate module 30, the lens unit 10, And aligning with the original design position, and injecting a hardening agent to press.

Therefore, according to the camera 100 according to the embodiment of the present invention, the parts for coupling each component and the parts for sealing are unnecessary, so that the number of parts can be reduced and the productivity can be improved. In addition, since the outside of the camera is enclosed by the molding resin, the path through which the moisture penetrates is removed, and the waterproof efficiency is increased.

In addition, since the substrate module 30 can be coupled by the molding part 130, the degree of freedom can be increased from the viewpoint of design regarding the arrangement of each configuration of the substrate module 30. [ For example, in the example shown in FIG. 3, a plurality of substrates 32, 34, 36, and 38 are arranged in the horizontal direction. Alternatively, the plurality of substrates 32, 34, 36, . This is because the plurality of substrates 32, 34, 36 and 38 are electrically connected to each other within the region of the molding part 130 by the molding part 130, It can be understood that the positions of the first, second, third, and fourth movable members 32, 34, 36, 38 are fixed,

Fig. 5 is an enlarged view of a portion A in Fig. 3, and Fig. 6 is a cross-sectional view showing a portion B and a modified example of the protrusion in Fig.

5, protrusions 15 are formed in the side surface of the lens unit 10 and the lens holder 20 to secure the connection with the molding unit 50, Can be formed. For example, the protrusion 15 may be in the form of a plurality of protrusions protruding from the side surface 14 of the lens portion 10. Accordingly, the side surface 14 of the lens unit 10 has an increased surface area for joining with the molding unit 50, and thus has an advantage that the bonding force is strengthened.

Also, protrusions may be formed on a side surface of the lens holder 20 in which the molding unit 50 is formed.

6, the shapes of the protrusions may be variously formed. For example, a plurality of protrusions 1001 may protrude from the side surface 23 of the lens holder 20 and a plurality of grooves 1002 may be formed by the plurality of protrusions 1001, The side projection 15 of the lens unit 10 of FIG.

6A, an inclined surface 1004 may be formed on the outer circumferential surface of the protrusion 1003, and an inclined surface may also be formed on the inner circumferential surface of the plurality of grooves 1005. As shown in FIG.

6B, the protrusions may include a first protrusion 1007 protruding from the side surface of the lens holder 20 and a second protrusion 1007 protruding from the first protrusion 1007 with a cross- 2 protrusion 1006 as shown in Fig.

6C, an inclined surface is formed only on one surface of the outer circumferential surface of the protrusion 1010, so that the contact area with the molding part 50 is expanded.

In FIG. 6 (d), a plurality of ribs 1012 protrude from the side surface of the lens holder 20 as an example.

In Fig. 6E, the grooves 1013 formed between the plurality of protrusions 1014 are formed as curved surfaces.

7 is a cross-sectional view illustrating a modified example of the bracket formed in the molding part according to the present invention.

Referring to FIG. 7, a bracket 60 for mounting the camera 100 may be formed on the molding part 50. For example, the camera 100 may be installed inside the vehicle, and the bracket 60 may be understood as a structure for fixing the camera 100 to a specific position inside the vehicle. In other words, the bracket 60 can fix the camera 100 to an installation area by engaging with other structures provided in the vehicle.

The bracket 60 may be formed by a deformation of a mold shape when the molding part 50 is formed. As shown in FIG. 7 (a), the bracket 60 may protrude from the outer circumferential surface of the molding part 50. The brackets 61, 62 and 63 include at least a portion bent from the end protruding from the outer circumferential surface of the molding part 50 as shown in FIGS. 7 (b), 7 (c) and 7 . ≪ / RTI >

8 is a cross-sectional view showing a state where a screw groove is formed in the molding part according to the present invention.

Referring to FIG. 8, the camera 100 may be installed inside the vehicle through screws, in addition to the brackets 60, 61, 62 and 63. In detail, a separate bracket (not shown) for coupling with the camera 100 may be provided inside the vehicle where the camera 100 is installed. The bracket may include a hole into which the molding part 50 is inserted and a thread formed on the inner peripheral surface of the hole. A screw groove 52 may be formed in the outer peripheral surface of the molding part 50 in correspondence with the thread. Therefore, the molding part 50 is fitted in the hole of the bracket and is screwed, so that the camera 100 can be installed inside the vehicle. The screw groove 52 may also be formed by changing the shape of the mold when the molding part 50 is formed.

FIG. 9 is a cross-sectional view showing a combination of a camera and a bracket according to the present invention.

Referring to FIG. 9, the camera 100 according to the present invention may be installed in a vehicle, a ship, an airplane, etc., in combination with a separate bracket. At this time, a screw groove 55 for engaging with the bracket 70 may be formed on the outer circumferential surface of the molding part 50. The bracket 70 is provided with a seating groove 71 on which the molding part 50 is seated and a thread 74 formed on the inner peripheral surface of the seating groove 71 and threadedly engaged with the screw groove 55. [ May be included.

With the above-described structure, the molding part 50 can be screwed to the bracket 70 and fixed to the bracket 70. On the body of the bracket 70, a separate latching part 72 for fixing to the inside or outside of the vehicle, the ship, and the airplane may be provided.

Hereinafter, a coupling structure of the substrate module 30, the lens unit 10, and the lens holder 20 will be described.

10 is a cross-sectional view illustrating a modification of the camera configuration according to the present invention.

3 and 10, the first substrate 32 and the lens holder 20 on which the image sensor 31 is mounted, the first substrate 32, The mold portion 50 is prevented from being formed between the first and second portions 10a and 10b.

In detail, the camera 100 according to the present invention is manufactured by aligning the lens unit 10, the lens holder 20, and the substrate module 30 in a mold and injecting a hardening agent. At this time, when the hardening agent penetrates into the image sensor 31, there is a concern that the image sensor 31 can not receive the image of the object collected in the lens unit 10. In addition, failure of the image sensor 31 may occur due to penetration of the curing agent.

In order to prevent this, a mold region 50 is not formed between the first substrate 32 and the lens portion 10. 3, the lens holder 20 has a sensor groove 21 in which the image sensor 31 is fitted, and the lens holder 20 has a lens holder 20, The upper surface of the first substrate 32 may be in close contact with the lower surface. At this time, it can be understood that the image sensor 31 and the lens unit 10 face each other.

A sealing member may be interposed between the lower surface of the lens holder 20 and the upper surface 32 of the first substrate. For example, the sealing member may be an O-ring.

This prevents the hardening agent from flowing into the image sensor 31 when the mold unit 50 is formed, so that the reliability of the camera 100 can be assured.

10 shows a modification of the structure for preventing the introduction of the curing agent into the image sensor 31. As shown in Fig.

10 (a), a lens holder 1100 to which the lens unit 10 is coupled on the front surface is configured to penetrate the back surface from the front surface to mount the lens unit 10 and the first substrate 32, The mounting holes 1110 and 1111 are formed.

The mounting holes 1110 and 1111 include a first mounting hole 1111 extending rearward from the front surface of the lens holder 1100 and a second mounting hole 1110 extending from the rear surface of the first mounting hole 1110 to the back surface of the lens holder 1100. [ And a second mounting hole 1110 extending toward the second mounting hole 1110. Here, the first mounting hole 1111 is understood as a hole to which the lens unit 10 is coupled, and the second mounting hole 1110 is understood as a hole where the first substrate unit 32 is seated. The first mounting hole 1111 and the second mounting hole 1110 communicate with each other. Therefore, the first substrate portion 32 on which the image sensor 31 is mounted faces the lens portion 10 to form an optical axis direction.

The second substrate portion 34 is coupled to the back surface of the lens holder 1100. In this case, the cross-sectional area of the second mounting hole 1110 corresponds to the first substrate portion 32 and is larger than that of the second substrate portion 34. The cross-sectional area of the first mounting hole 1111 is smaller than that of the first substrate 32.

Accordingly, the first substrate portion 32 is seated in the second mounting hole 1111, and the second substrate portion 34 is coupled to the back surface of the lens holder 1100. An O-ring is interposed between the second substrate portion 34 and the rear surface of the lens holder 1100 to prevent the cured product from being introduced into the mounting holes 1110 and 1111 have.

Referring to Fig. 10 (c), the lens portion and the lens holder are integrally formed. For convenience of explanation, the lens unit integrally formed and the lens holder are referred to as a lens module 80. [

The lens module 80 is formed with a glass 81 on its front surface and a seating groove 82 on its rear surface to which the image sensor 31 is coupled. The seating groove 82 is provided at a position facing the lens of the lens module 80 so that the lens and the image sensor 31 can form an optical axis direction.

The first substrate portion 32 is coupled to the back surface of the lens module 80. Similarly, an O-ring is interposed between the first substrate portion 32 and the lens module 80 to prevent the cured product from flowing into the seating groove 82.

Referring to FIG. 10 (d), the lens module 85 in which the lens portion and the lens holder are integrally formed is also provided in this modified example. The lens module 85 is formed with a seating groove 86 on the rear surface of which the first substrate portion 32 on which the image sensor 31 is mounted is seated. The seating groove 86 is separated from the other area by the inner circumferential surface 87 of the lens module 85.

The sectional area of the seating groove 86 corresponds to the sectional area of the first substrate portion 32 and is smaller than the sectional area of the second substrate portion 34 disposed behind the first substrate portion 32 do. Therefore, the first substrate portion 32 is seated in the seating groove 86, and the second substrate portion 34 is coupled to the back surface of the lens module 85. An O-ring is interposed between the second substrate portion 34 and the rear surface of the lens module 85 to prevent the cured product from being introduced into the seating groove 86.

11 is a sectional view showing a modification of the lens holder according to the present invention.

The present modification is the same in the other portions, but differs in the cross sectional area of the lens holder. Therefore, only the characteristic parts of the present modification will be described below, and the same parts as those of the main embodiment will be referred to as the main embodiment.

Referring to FIG. 11, the cross-sectional area of the lens holder 200 according to the present modification may be larger than the cross-sectional area of the molding part 50.

In detail, the lens holder 200 has a through hole 210 passing through the rear surface of the lens holder 200 to allow the molding part 50 to pass therethrough. The through holes 210 may be formed in a plurality of predetermined distances along the edges of the lens holder 200.

Therefore, when the molding unit 50 is formed, the curing agent passes through the through hole 210 to simultaneously couple the lens holder 200, the lens unit 10, and the substrate module 30. Accordingly, the outer peripheral surface of the molding part 50 has a shape in which a part of the lens holder 200 is protruded. A portion of the protruded lens holder 200 may function as a bracket for coupling with other structures.

FIG. 12 is a cross-sectional view showing a configuration of a camera according to a second embodiment of the present invention, FIG. 13 is a cross-sectional view showing a state in which a lens holder and a substrate unit are combined according to a second embodiment of the present invention, Sectional view of the substrate portion according to the second embodiment.

The present embodiment is the same as the first embodiment in the other portions, but differs in the shape of the lens holder. Therefore, only the characteristic parts of the present embodiment will be described below, and the same parts as those of the first embodiment will be referred to as the first embodiment. In the structure of this embodiment, the same numerals as in the first embodiment are assigned to the structures having the same functions as those of the first embodiment.

12, the lens holder 300 according to the present embodiment includes a first coupling hole 301 through which the lens unit 10 is inserted, and a second coupling hole 301 through which the substrate module 30 is inserted A second coupling hole 310 is formed. The first coupling hole 301 and the second coupling hole 310 are communicated with each other. In this case, the cross-sectional area of the second coupling hole 310 corresponds to the cross-sectional area of the plurality of substrates 32, 34, 36, 38 and is wider than the cross-sectional area of the first coupling hole 301, The image sensor 31 of the substrate section 32 forms an optical axis with the lens section 10. The cross-sectional shape of the second coupling hole 310 is formed to correspond to the shapes of the plurality of substrates 32, 34, 36, and 38.

11 to 13, in the present embodiment, the first substrate 32 to the fourth substrate 38 of the substrate module 30 are both housed in the second coupling hole 310. The depth of the second coupling hole 310 corresponds to the length of the substrate module 30.

Ribs 36a for coupling with the inner circumferential surface 330 of the second coupling hole 310 are formed at the circumferential edges of the plurality of substrates 32, 34, 36, and 38, respectively. The ribs 36a may protrude from one or both surfaces of the plurality of substrates 32, 34, 36, The number of the ribs 36a may be one or more along the edges of the plurality of substrates 32, 34, 36, and 38.

An engaging groove 332 is formed in the inner circumferential surface 330 of the second engaging hole 310 so as to engage with the rib 36a. The latching grooves 332 may be formed on the inner circumferential surface of the second coupling hole 310 corresponding to the number of the ribs 36a.

Therefore, when the plurality of substrates 32, 34, 36, and 38 are coupled to the second coupling hole 310, the rib 36a is inserted into the coupling groove 332, And the mold unit 50 is prevented from being formed between the lens unit 10 and the lens unit 10. In other words, since the plurality of substrates 32, 34, 36, and 38 and the second coupling hole 310 are shielded by the coupling structure of the rib 36a and the coupling groove 332, It is possible to effectively prevent the curing agent from flowing upward above the substrate 32.

FIG. 15 is a cross-sectional view of a substrate module according to a third embodiment of the present invention, and FIG. 16 is a cross-sectional view illustrating a plurality of substrates according to a third embodiment of the present invention.

The present embodiment is the same as the first embodiment in other parts, but there is a difference in the coupling of the substrate modules. Therefore, only the characteristic parts of the present embodiment will be described below, and the same parts as those of the first embodiment will be referred to as the first embodiment. In the structure of this embodiment, the same numerals as in the first embodiment are assigned to the structures having the same functions as those of the first embodiment.

15 and 16, the substrate module 400 according to the present embodiment includes a first substrate 410, a second substrate 420, and a third substrate 430 arranged at a predetermined interval . For example, the first substrate 410 is understood as a substrate on which the image sensor 31 is mounted, and the third substrate 430 is understood as a substrate on which the cable unit 40 is mounted. Hereinafter, the substrate on which the first substrate 410 is disposed, the substrate on which the third substrate 430 is disposed on the lower side, the second substrate 420 on the first substrate 410, And is disposed between the substrates 430. FIG.

The first to third substrates 410, 420, and 430 may be coupled to each other by a coupling shaft 500 passing through the first to third substrates 410, 420, and 430 in the arranging direction. In detail, the coupling shaft 500 is coupled through the first to third substrates 410, 420, and 430 along the arrangement direction of the first to third substrates 410, 420, and 430, respectively.

The coupling shaft 500 is formed to have a smaller sectional area as it goes downward. Substrate holes through which the coupling shaft 500 is inserted are formed on the first to third substrates 410, 420, and 430, respectively. That is, a first substrate hole 411 is formed on the first substrate 410, a second substrate hole 412 is formed on the second substrate 420, a third substrate hole 412 is formed on the third substrate 430, A substrate hole 413 is formed. The first through third substrate holes 411, 412, and 413 are formed to overlap with each other in a direction in which the coupling shaft 500 is inserted.

At this time, the substrate holes are formed so that the cross-sectional area of the holes formed in the substrate is relatively small. In other words, since the sectional area of the coupling shaft 500 becomes thinner toward the bottom, the sectional area of the substrate holes formed in the first to third substrates 410, 420, and 430 is larger than the sectional area of the coupling shaft 500 Respectively.

Therefore, the cross-sectional area of the first substrate hole 411 is larger than the cross-sectional area of the second substrate hole 412, and the cross-sectional area of the second substrate hole 412 is larger than that of the third substrate hole 413.

The first to third substrates 410, 420, and 430 are coupled to each other through the single coupling shaft 500, thereby reducing the number of parts.

According to the camera 100 having the above-described structure, there is an advantage that the manufacturing cost of the product is low because the components for combining the components or the components for sealing are not needed.

In addition, since the outer portion of the camera is enclosed by the molding resin, the path through which the moisture penetrates is removed, thereby increasing the waterproof efficiency.

In addition, since the lens part and the lens holder in which the molding part is formed are provided with the projections for increasing the surface area, the molding part is more firmly coupled to the lens part and the lens holder.

Further, since the substrate module can be coupled by the molding part, there is an advantage that the degree of freedom in designing the parts is increased.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. It is to be understood that the terms such as 'include', 'comprising', or 'having', as used herein, mean that a component can be implied unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (20)

A lens unit comprising at least one lens for collecting an image of an external subject;
A lens holder coupled to a back surface of the lens unit;
A substrate module coupled to a back surface of the lens holder, and mounting various electronic components for driving; And
And a molding unit which exposes the lens and surrounds the substrate module from the lens unit or the lens holder,
Wherein at least one protrusion protruding from an outer surface of the outer surface of the lens unit or the lens holder is formed in a region where the molding unit is coupled.
The method according to claim 1,
Wherein the protruding portion is formed on a side surface of the lens portion or the lens holder.
The method according to claim 1,
Wherein the protruding portion is a plurality of ribs protruding from an outer surface of the lens portion or the lens holder.
The method according to claim 1,
And an inclined surface is formed on an outer circumferential surface of the protrusion.
The method according to claim 1,
The protrusions are formed in a plurality of,
Wherein a curved groove is formed between adjacent projections.
The method according to claim 1,
The substrate module includes:
A first substrate unit on which an image sensor for converting an image of an object collected in the lens unit into an electric signal is mounted; And
And at least one other substrate portion spaced apart from the first substrate portion by a predetermined distance.
The method according to claim 6,
A groove for receiving the image sensor is formed on a lower surface of the lens holder,
And the upper surface of the first substrate portion is coupled to the lower surface of the lens holder.
8. The method of claim 7,
Wherein a sealing member is interposed between an upper surface of the first substrate portion and a lower surface of the lens holder to prevent the molding portion from being formed in the image sensor.
8. The method of claim 7,
Wherein the lens holder and the lens unit are integrally formed.
The method according to claim 6,
A mounting hole is formed in the lower surface of the lens holder so as to be recessed upward to receive the first substrate portion,
And the upper surface of the other substrate portion is coupled to the lower surface of the lens holder.
The method according to claim 6,
A substrate hole is formed on the first substrate portion and the other substrate portion,
And a coupling shaft penetrating the substrate hole to couple the first substrate portion and the other substrate portion.
12. The method of claim 11,
Wherein the coupling axis is formed to have a smaller cross-sectional area from the first substrate portion to the other substrate portion,
And a cross-sectional area of the substrate hole is formed to correspond to a cross-sectional area of the coupling shaft.
The method according to claim 1,
A first engaging hole is formed on an upper surface of the lens holder,
And a second coupling hole through which the substrate module is inserted is formed on a lower surface of the lens holder.
14. The method of claim 13,
A rib is protruded on a peripheral edge of the substrate module,
And an engagement groove is formed in a region of the inner circumferential surface of the second engagement hole facing the rib.
The method according to claim 1,
And a bracket is protrudingly formed on an outer circumferential surface of the mold part so as to be coupled with other parts.
The method according to claim 1,
And screw grooves are formed on the outer circumferential surface of the mold part so as to be screwed with other parts.
The method according to claim 1,
Wherein a cross-sectional area of the lens holder is larger than a cross-sectional area of the molding part, and a part of the lens holder protrudes on a side surface of the molding part. A lens unit comprising at least one lens for collecting an image of an external subject;
A lens holder coupled to a back surface of the lens unit;
A substrate module coupled to a back surface of the lens holder, and mounting various electronic components for driving; And
And a molding unit which exposes the lens and surrounds the substrate module from the lens unit or the lens holder,
The substrate module includes:
A first substrate unit on which an image sensor for converting an image of an object collected in the lens unit into an electric signal is mounted; And
And at least one other substrate portion spaced apart from the first substrate portion by a predetermined distance,
Wherein a groove is formed in the lower surface of the lens holder to receive the image sensor.
19. The method of claim 18,
And the upper surface of the first substrate portion is coupled to the lower surface of the lens holder.
19. The method of claim 18,
Wherein at least one protrusion protruding from an outer surface of the outer surface of the lens unit or the lens holder is formed in a region where the molding unit is coupled.

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