CN220139636U - Image pickup apparatus - Google Patents

Abstract

The utility model provides an imaging device. The size of the circuit board can be reduced to achieve miniaturization. An imaging device (1) is provided with: a front case (10) to which a lens (31) is attached; a first circuit board (40) on which an imaging element (41) that receives light that has passed through the lens (31) is mounted; a fitting (60) that can be attached to an attachment hole (18), the attachment hole (18) being formed in the front case (10); and a second circuit board (50) mounted to the fitting (60). The first circuit board (40) is mounted to the front case (10). The first circuit board (40) is formed with a notch (45) for holding the first circuit board (40) by clamping with a centering tool at a position corresponding to the mounting hole (18) of the front case (10).

Description

Image pickup apparatus

Technical Field

The present utility model relates to an image pickup apparatus, and more particularly, to an image pickup apparatus including 2 circuit boards.

Background

In general, in an imaging device such as a camera, an imaging element, a lens, and the like are housed in a case made up of, for example, 2 cases. A circuit board mounted with an image pickup device is required to be aligned with an optical axis of a lens, and a notch for holding the circuit board by being sandwiched by a tool (aligning tool) for adjusting the position of the circuit board is sometimes formed in the circuit board (for example, refer to patent document 1).

In recent years, the number of electrical components incorporated in a camera has increased, and thus, in addition to a circuit board (main circuit board) on which an image pickup element is mounted, an additional circuit board (sub circuit board) has been housed in a case. In this case, bosses for mounting screws for fixing the sub-circuit board are formed on the housing, and notches are formed in the main circuit board so as not to interfere with these bosses.

In this way, in the case where the sub-circuit board is provided in addition to the main circuit board, it is necessary to form a notch for avoiding the boss for fixing the sub-circuit board in addition to the notch for the aligning tool on the main circuit board, and therefore the mountable area of the main circuit board becomes small. Therefore, the size of the main circuit board cannot be sufficiently reduced, and as a result, it is difficult to sufficiently reduce the size of the image pickup apparatus.

Patent document 1: japanese patent laid-open publication No. 2019-29725

Disclosure of Invention

The present utility model has been made in view of the above-described problems of the related art, and an object of the present utility model is to provide an imaging device that can be reduced in size by reducing the size of a circuit board.

A first aspect of the present utility model provides an imaging apparatus, comprising: a housing mounted with at least one lens; a first circuit board mounted with an image pickup element that receives light passing through the at least one lens, and mounted to the housing; a fitting attachable to an attachment hole formed in the housing; and a second circuit board attached to the fitting, wherein the first circuit board has 2 or more notch portions formed at positions corresponding to the attachment holes of the housing, and the 2 or more notch portions are used for holding the first circuit board by clamping with a centering tool.

An imaging device according to a second aspect of the present utility model is the imaging device according to the first aspect, wherein the accessory includes: an insertion portion inserted into the mounting hole of the housing; and a mounting portion for mounting the second circuit board.

An imaging device according to a third aspect of the present utility model is the imaging device according to the second aspect, wherein the attachment portion of the attachment includes an engagement portion to which a rotation tool for rotating the attachment can be engaged.

An imaging device according to a fourth aspect of the present utility model is the imaging device according to the second or third aspect, wherein the attachment portion of the accessory is configured to abut against the first circuit board.

In the imaging device according to a fifth aspect of the present utility model, in the imaging device according to the first aspect, the case and the fitting have conductivity, and the fitting is configured to be electrically connected to a ground portion of the second circuit board.

An imaging device according to a sixth aspect of the present utility model is the imaging device according to the fifth aspect, further comprising a conductive shielding member for reducing electromagnetic noise from outside, wherein the shielding member is electrically connected to the ground portion of the second circuit board.

An imaging device according to a seventh aspect of the present utility model is the imaging device according to the fifth aspect, wherein the case is electrically connected to a ground portion of the first circuit board.

An imaging device according to an eighth aspect of the present utility model is the imaging device according to the first aspect, wherein the 2 or more notch portions are formed in a diagonal direction of the first circuit board.

Drawings

Fig. 1 is a perspective view showing an image pickup apparatus according to an embodiment of the present utility model.

Fig. 2 is an exploded perspective view of the image pickup apparatus shown in fig. 1.

Fig. 3 is a rear view of the front housing in the image pickup apparatus shown in fig. 1.

Fig. 4 is a rear view of the first circuit board in the image pickup apparatus shown in fig. 1.

Fig. 5 is a rear view showing a state in which the first circuit board shown in fig. 4 is mounted on the front case shown in fig. 3.

Fig. 6A is a plan view showing an accessory in the image pickup apparatus shown in fig. 2.

Fig. 6B is a right side view of the fitting of fig. 6A.

Fig. 6C is a rear view of the fitment of fig. 6A.

Fig. 7 is a partially cut-away perspective view showing a state in which a fitting is mounted on the front case shown in fig. 5.

Fig. 8 is a partially cut-away perspective view illustrating a process of mounting the second circuit board to the accessory shown in fig. 7.

Fig. 9 is a rear view showing a first circuit board in another embodiment of the present utility model.

Description of the reference numerals

1: an image pickup device; 2: a housing; 3: a lens barrel; 10: a front housing; 11: a base; 12: a cylindrical portion; 16: a threaded hole; 18: a mounting hole; 20: a rear housing; 21: a base; 22: a connector connecting portion; 31: a lens; 40: a first circuit board; 41: an image pickup element; 42: a flexible printed substrate; 43: penetration holes; 44: a screw; 45: a notch portion; 46: a grounding part; 50: a second circuit board; 51: a connection part; 53: penetration holes; 54: a screw; 56: a grounding part; 60: a fitting; 61: an insertion section; 62: a mounting part; 63: a threaded hole; 64: an engagement groove (engagement portion); 70: a shielding member; 71: penetration holes; 140: a first circuit board; 145: a notch portion; p: an optical axis.

Detailed Description

Hereinafter, an embodiment of an imaging device according to the present utility model will be described in detail with reference to fig. 1 to 9. In fig. 1 to 9, the same or corresponding components are denoted by the same reference numerals, and overlapping description thereof is omitted. In fig. 1 to 9, the scale and the dimensions of each component are exaggerated, and some components are omitted. In the following description, unless otherwise specified, terms such as "first" and "second" are used merely to distinguish components from each other, and do not denote a particular order or sequence.

Fig. 1 is a perspective view showing an image pickup apparatus 1 according to an embodiment of the present utility model, and fig. 2 is an exploded perspective view. As shown in fig. 1 and 2, the image pickup apparatus 1 has a housing 2 composed of a front case 10 and a rear case 20, and a lens barrel 3 mounted to the front case 10. In the present embodiment, the +z direction in fig. 1 is referred to as "front" or "front", and the-Z direction is referred to as "rear" or "rear", for convenience.

The front case 10 is formed of, for example, a conductive material, and has a substantially rectangular parallelepiped base portion 11 and a cylindrical portion 12 extending in the +z direction from the base portion 11. As shown in fig. 2, the lens barrel 3 is fixed to an opening 12A inside the cylindrical portion 12 of the front case 10 via an O-ring 4. The lens barrel 3 includes at least one lens 31. The rear case 20 includes a rectangular frame-shaped base 21 and a connector connecting portion 22 extending in the-Z direction from the base 21. Penetrating insertion holes 23 extending in the Z direction are formed at four corners of the base 21 of the rear case 20.

The front case 10 and the rear case 20 are arranged in the Z direction, and a screw (not shown) is inserted through the insertion hole 23 of the rear case 20 and screwed into a screw hole (screw hole 14 in fig. 5 described later) formed in the base 11 of the front case 10, whereby the rear case 20 can be fixed to the front case 10. A substantially annular seal member (not shown) is disposed between the front case 10 and the rear case 20, and the inside of the housing 2 is sealed from the outside by the seal member. By fixing the rear case 20 to the front case 10 in this way, a storage space is formed inside the housing 2.

The housing space in the case 2 houses a first circuit board 40 on which the image pickup element 41 is mounted, a second circuit board 50 on which a connection portion 51 electrically connected to the connector connection portion 22 of the rear case 20 is mounted, and a shielding member 70 formed by bending a metal plate. The image pickup element 41 is mounted on the +z direction side surface of the first circuit board 40, and light passing through the lens in the lens barrel 3 is imaged on the image pickup element 41 of the first circuit board 40. A flexible printed board 42 is connected to the first circuit board 40, and the image pickup element 41 on the first circuit board 40 is electrically connected to the second circuit board 50 via the flexible printed board 42.

The first circuit board 40 and the second circuit board 50 are arranged in the Z direction, the first circuit board 40 being located inside the base 11 of the front case 10, and the second circuit board 50 being located inside the base 21 of the rear case 20. As will be described later, the first circuit board 40 is fixed to the front case 10 by the screws 44, and the second circuit board 50 is mounted to the fitting 60 by the screws 54 and fixed to the front case 10 via the fitting 60. The fitting 60 is formed of a conductive material.

Fig. 3 is a rear view of the front case 10. As shown in fig. 3, screw holes 14 to which screws for fixing the rear case 20 are screwed are formed at four corners of the base 11 of the front case 10. Further, screw holes 16 for screwing screws 44 (see fig. 2) for fixing the first circuit board 40 to the front case 10 and mounting holes 18 for mounting the fitting 60 (see fig. 2) to the front case 10 are formed in the front case 10.

Fig. 4 is a rear view of the first circuit board 40. As shown in fig. 4, a through-hole 43 through which a screw 44 is inserted is formed in the first circuit board 40 at a position corresponding to the screw hole 16 of the front case 10. The ground portion 46 of the first circuit board 40 is exposed around the through-insertion hole 43. The first circuit board 40 is mounted to the front case 10 by inserting the screw 44 into the insertion hole 43 of the first circuit board 40 and screwing the screw 44 into the screw hole 16 of the front case 10. Here, since the image pickup element 41 mounted on the first circuit board 40 needs to be aligned with respect to the optical axis P of the lens in the lens barrel 3, the inner diameter of the through-insertion hole 43 of the first circuit board 40 is larger than the outer diameter of the screw 44.

As shown in fig. 4, 1 pair of notch portions 45 is formed in the first circuit board 40, and as shown in fig. 5, when the screw 44 is screwed into the screw hole 16 of the front case 10 to fix the first circuit board 40 to the front case 10, the notch portions 45 of the first circuit board 40 can be held by sandwiching them with a centering tool (not shown), and the position of the first circuit board 40 can be adjusted (centered) on the XY plane.

As shown in fig. 5, 1 pair of notch portions 45 of the first circuit board 40 are formed at positions corresponding to the mounting holes 18 of the front case 10, and when the first circuit board 40 is mounted to the front case 10, the mounting holes 18 of the front case 10 are exposed to the-Z direction side through the notch portions 45 of the first circuit board 40.

Fig. 6A is a top view, fig. 6B is a right side view, and fig. 6C is a rear view showing the fitting 60. As shown in fig. 6A to 6C, the fitting 60 has an insertion portion 61 inserted into the mounting hole 18 of the front case 10 and a mounting portion 62 having a larger diameter than the insertion portion 61. A screw hole 63 into which a screw 54 (see fig. 2) for fixing the second circuit board 50 is screwed is formed in the center of the mounting portion 62.

As shown in fig. 5, in a state in which the centering of the first circuit board 40 is completed, the mounting hole 18 of the front case 10 is exposed via the notch portion 45 of the first circuit board 40, and therefore, the insertion portion 61 of the fitting 60 can be inserted into the mounting hole 18 of the front case 10 after the centering of the first circuit board 40 is completed. The fitting 60 can be mounted to the mounting hole 18 of the front case 10 by fitting the insertion portion 61 of the fitting 60 into the mounting hole 18 of the front case 10. Alternatively, the fitting 60 may be attached to the front case 10 by forming screw threads in the insertion portion 61 of the fitting 60 using the attachment hole 18 of the front case 10 as a screw hole, and screwing the insertion portion 61 into the attachment hole 18 of the front case 10.

As shown in fig. 6A and 6C, the attachment portion 62 of the attachment 60 in the present embodiment is formed with an engagement groove 64 (engagement portion) into which a rotary tool (for example, a straight screwdriver) that rotates the attachment 60 can be engaged. By engaging the rotation tool with such engagement groove 64 to rotate the fitting, the fitting 60 can be easily attached to the front case 10. Instead of such engagement groove 64, a part of the outer peripheral surface of the attachment portion 62 of the fitting 60 may be formed in a flat shape, and the flat surface may be used as the engagement portion.

Fig. 7 is a partially cut-away perspective view showing a state in which the fitting 60 is attached to the attachment hole 18 of the front case 10 shown in fig. 5. As shown in fig. 7, in a state where the fitting 60 is mounted to the mounting hole 18 of the front case 10, the +z-direction surface of the mounting portion 62 of the fitting 60 abuts against the-Z-direction side surface of the first circuit board 40. Thus, the first circuit board 40 is fixed to the front case 10 not only by the screws 44 but also by the mounting portions 62 of the fittings 60, and the mounting strength of the first circuit board 40 to the front case 10 is improved.

The second circuit board 50 is mounted to the front case 10 via such a fitting 60. As shown in fig. 2, a through-insertion hole 53 through which the screw 54 is inserted is formed in the second circuit board 50 at a position corresponding to the mounting portion 62 of the fitting 60 (in other words, a position corresponding to the mounting hole 18 of the front case 10). In the state shown in fig. 7, the position of the insertion hole 53 of the second circuit board 50 is aligned with the position of the screw hole 63 of the mounting portion 62 of the fitting 60, and as shown in fig. 8, the second circuit board 50 is mounted to the front case 10 via the fitting 60 by inserting the screw 54 into the insertion hole 71 of the shielding member 70 and the insertion hole 53 of the second circuit board 50, and screwing the screw 54 into the screw hole 63 of the fitting 60. As shown in fig. 8, the ground portion 56 of the second circuit board 50 is exposed around the through-insertion hole 53 of the second circuit board 50.

According to the present embodiment, if the fitting 60 is detached from the front case 10, the notch 45 of the first circuit board 40 can be clamped by the centering tool, so that centering can be performed in such a manner as to hold the first circuit board 40. In addition, after aligning the first circuit board 40, the second circuit board 50 can be mounted to the front case 10 via the fitting 60 by mounting the fitting 60 to the front case 10. As described above, according to the present embodiment, it is not necessary to form a boss for fixing the second circuit board 50 in the front case 10, and therefore it is also not necessary to form a notch for avoiding such a boss in the first circuit board 40. Therefore, the mountable area of the first circuit board 40 can be suppressed from becoming small due to the notch for avoiding the boss. As a result, the size of the first circuit board 40 can be reduced, and the imaging apparatus 1 can be miniaturized.

In the present embodiment, since the grounding portion 56 is exposed around the through-insertion hole 53 of the second circuit board 50, the shielding member 70 is electrically connected to the grounding portion 56 of the second circuit board 50 when the second circuit board 50 is mounted to the fitting 60 by the screw 54. Since the front case 10 and the fitting 60 are made of conductive materials, and the screw 54 is also conductive, when the second circuit board 50 is mounted to the fitting 60 by the screw 54, the shield member 70, the grounding portion 56 of the second circuit board 50, the fitting 60, and the front case 10 are all equipotential. In the present embodiment, the ground portion 46 is exposed around the insertion hole 43 of the first circuit board 40, and the screw 44 for attaching the first circuit board 40 to the front case 10 has conductivity, so that the ground portion 46 of the first circuit board 40 and the front case 10 are also equipotential when the first circuit board 40 is attached to the front case 10 by the screw 44. Therefore, the imaging element 41 and the electronic components on the circuit boards 40 and 50 accommodated in the accommodation space inside the housing 2 are effectively protected from electromagnetic noise.

In the present embodiment, the notch portions 45 are formed on both sides of the first circuit board 40 in the X direction, but in order to hold the first circuit board 40 more stably by the aligning tool, 2 notch portions 145 may be formed in the diagonal direction as in the first circuit board 140 shown in fig. 9. The number of the notch portions 45, 145 in the first circuit boards 40, 140 may be 2 or more.

As described above, according to one embodiment of the present utility model, an imaging device is provided that can be miniaturized by reducing the size of a circuit board. The image pickup device comprises: a housing mounted with at least one lens; a first circuit board on which an image pickup element that receives light having passed through the at least one lens is mounted; a fitting attachable to an attachment hole formed in the housing; and a second circuit board mounted on the fitting. The first circuit board is mounted on the housing. The first circuit board has at least 2 notch portions formed at positions corresponding to the mounting holes of the housing, for holding the first circuit board by clamping with a centering tool.

According to such a configuration, if the fitting is detached from the housing, the notch portion of the first circuit board can be held by the centering tool to perform centering so as to hold the first circuit board. In addition, after aligning the first circuit board, the fitting is attached to the housing, so that the second circuit board can be attached to the housing via the fitting. Thus, according to the structure of the present utility model, it is not necessary to form the boss for fixing the second circuit board on the housing, and therefore it is also not necessary to form the notch for avoiding such boss on the first circuit board. Therefore, the mountable area of the first circuit board can be suppressed from becoming small due to the notch for avoiding the boss. As a result, the size of the first circuit board can be reduced, and the imaging device can be miniaturized.

The fitting may include: an insertion portion inserted into the mounting hole of the housing; and a mounting part for mounting the second circuit board. In this case, it is preferable that the attachment portion of the attachment has an engaging portion to which a rotary tool for rotating the attachment can be engaged. By engaging the rotation tool with the engagement portion of such a fitting, the fitting is rotated, and the fitting is easily attached to the housing.

In order to enhance the mounting strength of the first circuit board to the housing, it is preferable that the mounting portion of the fitting is configured to abut against the first circuit board.

The case and the fitting may have conductivity, and the fitting may be electrically connected to a ground portion of the second circuit board. In this case, since the ground portion of the second circuit board, the accessories, and the case are all equipotential, the image pickup elements and the electronic components on the first circuit board and the second circuit board are effectively protected from electromagnetic noise.

The imaging device may further include a conductive shielding member for reducing electromagnetic noise from the outside. In this case, the shielding member is preferably electrically connected to the ground portion of the second circuit board. According to this configuration, the shield member, the grounding portion of the second circuit board, the accessory, and the case are all equipotential, so that the image pickup element and the electronic component on the first circuit board and the second circuit board are more effectively protected from electromagnetic noise.

Preferably, the case is electrically connected to a ground portion of the first circuit board. In this case, since the ground portion of the first circuit board and the front case also become equipotential, the image pickup elements and electronic components on the first circuit board and the second circuit board are more effectively protected from electromagnetic noise.

In order to more stably hold the first circuit board by the aligning tool, the 2 or more notch portions may be formed in a diagonal direction of the first circuit board.

The preferred embodiments of the present utility model have been described, but the present utility model is not limited to the above-described embodiments, and may be implemented in various modes within the scope of the technical ideas.

Claims (8)

1. An image pickup apparatus, characterized in that,

the image pickup device comprises:

a housing mounted with at least one lens;

a first circuit board mounted with an image pickup element that receives light passing through the at least one lens, and mounted to the housing;

a fitting attachable to an attachment hole formed in the housing; and

a second circuit board mounted to the fitting,

the first circuit board has at least 2 notch portions formed at positions corresponding to the mounting holes of the housing, and the at least 2 notch portions are used for holding the first circuit board by clamping with a centering tool.

2. The image pickup apparatus according to claim 1, wherein,

the fitting comprises:

an insertion portion inserted into the mounting hole of the housing; and

and a mounting part for mounting the second circuit board.

3. The image pickup apparatus according to claim 2, wherein,

the attachment portion of the accessory has an engagement portion to which a rotation tool for rotating the accessory can be engaged.

4. An image pickup apparatus according to claim 2 or 3, wherein,

the mounting portion of the fitting is configured to abut against the first circuit board.

5. The image pickup apparatus according to claim 1, wherein,

the housing and the fitting are electrically conductive,

the fitting is configured to be electrically connected to a ground of the second circuit board.

6. The image pickup apparatus according to claim 5, wherein,

the image pickup apparatus further has a conductive shielding member for reducing electromagnetic noise from the outside,

the shielding member is configured to be electrically connected to the ground portion of the second circuit board.

7. The image pickup apparatus according to claim 5, wherein,

the housing is configured to be electrically connected to a ground of the first circuit board.

8. The image pickup apparatus according to claim 1, wherein,

the at least 2 notch portions are formed in a diagonal direction of the first circuit board.