JP2022181480A - Camera unit and portable information terminal - Google Patents

Abstract

To provide a camera unit with reduced factors that impede the operation of a camera module.SOLUTION: A camera unit comprises: a camera module including a sensor substrate 13 on which an image pickup device is installed; a holder frame 40 in which the camera module is accommodated; a case 50 for accommodating the holder frame 40; and a wiring board 20 which is connected to the sensor substrate 13 and transmits a signal output by the image pickup device. The wiring board 20 comprises a plurality of connections 21, 22, 23, 24, and a main body part 25 connected to the sensor substrate 13 via the connections. The main body part 25 includes an insertion end part 26 to be inserted below the sensor substrate 13 and a lead-out end part 27 to be pulled out of the case 50. The connections 21, 22, 23, 24 are arranged between the sensor substrate 13 and the insertion end part 26, in the vicinity of an optical axis L, and connect the sensor substrate 13 and the insertion end part 26 in a duplicate region.SELECTED DRAWING: Figure 6

Description

The present invention relates to a camera unit and a portable information terminal.

Today, various optical instruments have been developed and put into practical use. As one of such optical devices, a camera unit having a tiltable camera module is known (see Patent Documents 1 and 2). For example, Patent Literature 1 describes a camera module that includes a lens module and an anti-vibration module. The anti-vibration module described in US Pat. No. 6,200,000 includes an outer frame and a first drive assembly, wherein the lens module is rotatable with respect to the outer frame of the anti-vibration module.

A first drive assembly of the anti-vibration module includes a first drive coil and a first magnetic element, wherein the first drive coil is provided on the outer frame and the first magnetic element is provided on the lens module. It is Then, when a voltage is applied to the first drive coil within the magnetic field of the first magnetic element, the lens module rotates with respect to the outer frame. Furthermore, Patent Document 1 describes that the camera module is mounted on an electronic device.

Chinese Patent Application Publication No. 111510598 Chinese Patent Application Publication No. 111416925

In a camera unit having a camera module that can tilt and swing, it is desirable to minimize factors that impede movement of the camera module.

SUMMARY OF THE INVENTION An object of the present invention is to provide a camera unit in which factors that impede movement of a camera module are reduced.

A camera unit according to one embodiment includes a camera module including a sensor substrate, an imaging element mounted on the sensor substrate, an optical element for condensing light on the imaging element, and a movable housing in which the camera module is accommodated. a member, a fixed member that houses the movable member, and the movable member that is fixed to the fixed member so that the movable member is rotatable with respect to the fixed member about an axis that intersects the optical axis of the optical element. a support mechanism that supports a member; a drive mechanism that rotates the movable member relative to the fixed member; and a wiring board that is connected to the sensor substrate and transmits signals output from the imaging device . The wiring board includes a plurality of connection portions, and a body portion connected to the sensor substrate via the connection portions. The body portion includes an insertion end portion inserted below the sensor substrate and a pull-out end portion pulled out of the fixing member. Each of the connecting portions is arranged between the sensor substrate and the insertion end and around the optical axis to connect the sensor substrate and the insertion end within an overlap region.

A camera unit and a portable information terminal including the same are realized in which factors that impede movement of the camera module are reduced.

1 is a perspective view showing a camera unit according to one embodiment; FIG. It is a top view showing a camera unit concerning one embodiment. 1 is an exploded view of a camera unit according to one embodiment; FIG. 4 is a perspective view showing a holder, a case and a stopper plate; FIG. 3 is a partially enlarged cross-sectional view taken along line aa in FIG. 2; FIG. It is a perspective view which shows a wiring board. It is an expansion perspective view which shows a connection part. It is an enlarged plan view which shows a connection part. 1 is a perspective view showing a portable information terminal including a camera unit according to one embodiment; FIG. FIG. 10 is a cross-sectional view showing a modification of the wiring board; FIG. 11 is a cross-sectional view showing another modification of the wiring board; FIG. 3 is an enlarged perspective view showing an example layout of a connecting portion;

An example of a camera unit to which the present invention is applied will be described in detail below with reference to the drawings. In the following description, the same reference numerals are used for the same or substantially the same configurations and elements. In principle, the configuration and elements that have already been explained will not be explained again.

<Overview of camera unit>
A camera unit 1A shown in FIGS. 1 and 2 comprises a camera module 10, a wiring board 20, a module holding mechanism 30, and the like. The camera unit 1A is suitable for mounting on mobile information terminals such as smartphones, tablet PCs, notebook PCs, etc., but there are no restrictions on the uses of the camera unit 1A.

A dashed-dotted line labeled L in FIG. 1 indicates the optical axis of an optical element included in the camera module 10 . The dashed-dotted line labeled L1 in FIG. 2 indicates a first axis that intersects the optical axis L shown in FIG. 1, and the dashed-dotted line labeled L2 is the optical axis. A second axis intersecting L is shown.

The Z-axis shown in FIGS. 1 and 2 is parallel to the optical axis L, the X-axis is parallel to the yaw rotation axis, and the Y-axis is parallel to the pitch rotation axis. In the following description, the rotation axis for yawing may be called "yawing axis", and the rotation axis for pitching may be called "pitching axis".
<Camera module>
As shown in FIG. 3, the camera module 10 includes a lens 11, an imaging element (imaging sensor, image sensor) 12, a sensor substrate 13, and the like. The lens 11 is one of the optical elements included in the camera module 10 and condenses light on the light receiving surface of the imaging element 12 . In other words, the lens 11 is an imaging optical system that forms an image of a subject on the light-receiving surface of the imaging element 12, or is at least one of the optical elements that constitute the imaging optical system.

The imaging device 12 converts the brightness of the subject image formed on the light receiving surface by the lens 11 into a charge amount, and outputs a voltage (signal) corresponding to the converted charge amount. The imaging element 12 is mounted on one main surface (mounting surface 13a) of the sensor substrate 13 .

The lens 11 is contained within a rectangular box-shaped housing 14 . However, a portion (upper portion) of the lens 11 protrudes from the upper surface of the housing 14 . The housing 14 also accommodates actuators and the like for advancing and retracting the lens 11 in order to realize an AF (autofocus) function.

The sensor substrate 13 is arranged below the housing 14 with the mounting surface 13a facing upward. As a result, the imaging element 12 mounted on the mounting surface 13 a faces the exit surface of the lens 11 . Furthermore, the optical axis L (FIG. 1) of the lens 11 passes through the center of the imaging device 12 .

<Module holding mechanism>
The module holding mechanism 30 shown in FIGS. 1 to 3 has a function of correcting yawing and pitching of the camera module 10. FIG. That is, the camera unit 1A of this embodiment has a camera shake correction function.

As shown in FIG. 3, the module holding mechanism 30 includes a movable member 40 that accommodates the camera module 10, a fixed member 50 that accommodates the movable member 40, a support mechanism 60 that supports the movable member 40, and a movable member. and a drive mechanism 70 for driving the member 40 .

<Movable member and fixed member>
As shown in FIG. 4, the movable member 40 is a resin molded product that has a rectangular frame-like appearance as a whole. The fixed member 50 is also a resin molded product and has a housing space 51 corresponding to the outer shape of the movable member 40 . In the following description, the movable member 40 may be called "holder frame 40" and the fixed member 50 may be called "case 50".

The holder frame 40 is housed inside the housing space 51 of the case 50 in the orientation shown in FIG. are facing each other. Normally, however, the bottom surface 41 of the holder frame 40 and the bottom inner surface 52 of the case 50 are not in contact with each other. That is, the holder frame 40 is housed in the case 50 in a floating state.

<Support Mechanism>
The support mechanism 60 shown in FIG. 3 is arranged to rotate the holder frame 40 relative to the case 50 about one or more axes that intersect the optical axis L (FIG. 1). support. More specifically, the support mechanism 60 supports the holder frame 40 so that the holder frame 40 can rotate with respect to the case 50 about the axes L1 and L2 shown in FIG. 2 as rotation axes. ing.

As shown in FIG. 3, the support mechanism 60 includes a gimbal 61, a support member 62, and the like. As shown in FIGS. 1 and 2, the gimbal 61 has a gimbal body 63 with a circular opening 63a surrounding the lens 11 and four arms provided at the four corners of the gimbal body 63. As shown in FIG. A pair of arms 64a and 64b are provided at one pair of diagonal corners of the gimbal body 63, respectively, and another pair of arms 65a and 65b are provided at another pair of diagonal corners of the gimbal body 63, respectively.

As shown in FIG. 2, gimbal 61 is mounted such that arms 64a and 64b are arranged along axis L1 and arms 65a and 65b are arranged along axis L2. Each arm 64 a , 64 b , 65 a , 65 b of the gimbal 61 is bent at approximately 90 degrees with respect to the gimbal main body 63 . In addition, hemispherical recesses are formed at the ends of the respective arms 64a, 64b, 65a, 65b.

Two arms 64a, 64b of gimbal 61 are connected to case 50 via two support members 62 shown in FIG. On the other hand, the two arms 65a, 65b of the gimbal 61 are connected to the holder frame 40 via the other two support members 62 shown in FIG.

As shown in FIG. 4, two opposite corners of the case 50 (accommodating space 51) are provided with insertion grooves 53, and support members 62 (FIG. 3) are arranged in the insertion grooves 53, respectively. Similarly, two opposite corners of the holder frame 40 are provided with insertion grooves 42, and support members 62 (FIG. 3) are arranged in the insertion grooves 42, respectively.

Arms 64 a and 64 b of gimbal 61 shown in FIGS. 1 and 2 are inserted in front of (inside) support member 62 arranged in insertion groove 53 of case 50 . On the other hand, arms 65a and 65b of gimbal 61 shown in FIGS.

A metal ball is welded to each support member 62 . The balls welded to the support member 62 arranged in the insertion groove 53 shown in FIG. to fit. Also, the balls welded to the support member 62 arranged in the insertion groove 42 shown in FIG. fit into the recess of

The gimbal 61 is supported by the case 50 as described above. At the same time, the gimbal 61 holds the holder frame 40 housing the camera module 10 . From another point of view, the holder frame 40 housing the camera module 10 is suspended from the gimbal 61 supported by the case 50 . As a result, the holder frame 40 and the camera module 10 housed therein are rotatable (tiltable) in a plurality of directions including the yawing direction and the pitching direction.

<Stopper plate>
As shown in FIGS. 1 and 2 , a stopper plate 66 that covers the holder frame 40 is attached to the case 50 . As shown in FIG. 4, the stopper plate 66 is a sheet metal with an opening 67 through which at least the lens 11 and the gimbal body 63 are exposed. Notches 68 are provided at the four corners of the opening 67 of the stopper plate 66 to avoid interference with the arms 64a, 64b, 65a, 65b of the gimbal 61. As shown in FIG.

The stopper plate 66 attached to the case 50 faces all or part of the upper surface 44 of the holder frame 40 . As a result, excessive rotation of the holder frame 40 is restricted by the stopper plate 66 . Specifically, when the rotation angle of the holder frame 40 reaches a predetermined angle, the upper surface 44 of the holder frame 40 comes into contact with the stopper plate 66, and further rotation is restricted. Also, the stopper plate 66 prevents the holder frame 40 from jumping out of the case 50 due to impact when dropped. Furthermore, the stopper plate 66 also functions as a dustproof cover that prevents foreign objects, dust, etc. from entering the inside of the holder frame 40 and the case 50 . In another embodiment, excessive rotation of the holder frame 40 may be regulated by contacting the case 50 with the holder frame 40 .

FIG. 5 is a partially enlarged cross-sectional view taken along line aa in FIG. 2 and schematically shows the cross-sectional shape of the edge of the opening 67. As shown in FIG. As shown in FIG. 5, the edge of the opening 67 of the stopper plate 66 is provided with a bent portion 67a that is bent toward the inside (holder frame 40) over the entire circumference. The bent portion 67a is formed by, for example, pressing.

By providing the bent portion 67a at the edge of the opening 67, the rigidity of the stopper plate 66 is improved. In particular, the rigidity of the periphery of the opening 67 is improved. From another point of view, the rigidity of the stopper plate 66 is increased without increasing the thickness of the stopper plate 66 .

The angle θ of the bent portion 67a shown in FIG. 5 is approximately 45 degrees. However, the angle and the amount of protrusion of the bent portion 67a can be appropriately changed within a range in which the assumed maximum stroke (maximum rotation angle) of the holder frame 40 is ensured. For example, the angle θ of the bent portion 67a may be 90 degrees or 180 degrees.

<Drive Mechanism>
Refer to FIG. 3 again. The illustrated drive mechanism 70 rotates the holder frame 40 housing the camera module 10 with respect to the case 50 in order to correct yawing and pitching of the camera module 10 . For example, the drive mechanism 70 rotates the holder frame 40 with respect to the case 50 with the yawing axis and the chipping axis as rotation axes.

The drive mechanism 70 is composed of a coil, a permanent magnet, and the like, and generates a force (thrust force) that rotates the holder frame 40 with respect to the case 50 . The drive mechanism 70 of this embodiment includes two winding coils (air-core coils) 71 and 72 . Further, the drive mechanism 70 of this embodiment includes a permanent magnet 73 corresponding to the winding coil 71 and a permanent magnet 74 corresponding to the winding coil 72 . In other embodiments, instead of the wound coils 71 and 72, other types of coils such as substrate coils are used.

As shown in FIG. 4, magnet mounting grooves 43a and 43b are formed on the outer surfaces of two adjacent side walls of the holder frame 40, respectively. The permanent magnet 73 shown in FIG. 3 is housed in the magnet mounting groove 43a shown in FIG. On the other hand, the permanent magnet 74 shown in FIG. 3 is accommodated in the magnet mounting groove 43b shown in FIG.

As shown in FIG. 4, coil mounting portions 54a and 54b are formed on side walls of the case 50 that face the side walls of the holder frame 40 in which the magnet mounting grooves 43a and 43b are formed, respectively. The wound coil 71 shown in FIG. 3 is attached to the coil mounting portion 54a shown in FIG. 4, and the wound coil 72 shown in FIG. It is attached to the portion 54b.

When the holder frame 40 is accommodated in the case 50, the winding coil 71 and the permanent magnet 73 face each other, and the winding coil 72 and the permanent magnet 74 face each other. Then, when yawing, pitching, or the like of the camera module 10 is detected by a magnetic sensor (for example, a Hall element), power is supplied to the winding coil 71 and/or the winding coil 72 . As a result, the holder frame 40 rotates (tilts) with respect to the case 50 .

There is also an embodiment in which power is supplied to the winding coil 71 and/or the winding coil 72 based on a gyro signal output from a gyro sensor mounted on a portable information terminal on which the camera unit 1A is mounted. .

In any case, the driving mechanism 70 supplies electric power to the winding coils 71 and 72 based on the signal output from the predetermined sensor to rotate the holder frame 40 with respect to the case 50 . More specifically, the holder frame 40 is rotated with respect to the case 50 so that the camera module 10 is tilted in a direction in which the yawing, pitching, etc. of the camera module 10 are cancelled.

<Wiring board>
The wiring board 20 shown in FIGS. 1 and 2 is connected to the camera module 10 inside the case 50 . More specifically, the wiring board 20 is connected to the sensor board 13 shown in FIG. 3, and transmits signals output from the imaging device 12 to the outside. The signal transmitted to the outside through the wiring board 20 is input to an image processing circuit or the like provided in the portable information terminal on which the camera unit 1A is mounted, and processed. The wiring board 20 can also be used to supply power to the imaging device 12 and to input control signals.

As shown in FIG. 6, the wiring board 20 includes four connection portions 21, 22, 23, and 24, and a body portion 25 connected to the sensor substrate 13 via the connection portions 21, 22, 23, and 24. , is equipped with

<Body part>
The body portion 25 is formed of an elongated rigid substrate, and includes an insertion end portion 26 inserted below the sensor substrate 13 and an extraction end portion 27 pulled out of the case 50 . From another point of view, the part of the main body 25 inserted below the sensor board 13 is the insertion end 26, and the other part of the main body 25 pulled out of the case 50 is the pull-out end. It is part 27 .

The insertion end 26 inserted below the sensor substrate 13 faces the sensor substrate 13 . More specifically, the insertion end 26 faces the rear surface 13b of the sensor substrate 13 on the side opposite to the mounting surface 13a. From another point of view, there is an overlapping region between the sensor substrate 13 and the body portion 25 (insertion end portion 26) where the two overlap each other.

<Connector>
The connecting portions 21, 22, 23, and 24 are formed of strip-shaped or strip-shaped flexible printed circuit boards (FPC/Flexible Printed Circuits). Each connecting portion 21, 22, 23, 24 connects the sensor substrate 13 and the main body portion 25 (insertion end portion 26) within the overlapping region. Specifically, the connection portions 21, 22, 23, and 24 are arranged between the opposing sensor substrate 13 and the insertion end portion 26 and around the optical axis L, and are arranged between the sensor substrate 13 and the insertion end portion 26. 26 is connected. More specifically, one end of each connection portion 21, 22, 23, 24 is joined to the back surface 13b of the sensor substrate 13, and the other end of each connection portion 21, 22, 23, 24 is connected to the insertion end portion 26. Bonded to the surface.

From another point of view, the sensor substrate 13 is electrically connected to the body portion 25 via a plurality of connecting portions 21, 22, 23, 24 drawn downward. From another point of view, the body portion 25 is electrically connected to the sensor substrate 13 via a plurality of connecting portions 21, 22, 23, and 24 raised upward.

The connecting portions 21 , 22 , 23 , 24 are arranged around the optical axis L so as to surround the optical axis L. As shown in FIG. Here, the optical axis L passes through the center or approximately the center of the sensor substrate 13 . Furthermore, the center of gravity of the camera module 10 including the sensor substrate 13 matches or substantially matches the center of the sensor substrate 13 . As a result, the camera module 10 is supported from below by the connecting portions 21 , 22 , 23 , 24 , and the supporting point coincides or substantially coincides with the center of gravity of the camera module 10 . However, the connection portions 21 , 22 , 23 and 24 do not support all the weight of the camera module 10 . Rather, the weight of camera module 10 is supported exclusively by gimbal 61 .

As described above, the sensor substrate 13 and the body portion 25 are connected to each other via the flexible connection portions 21, 22, 23, and 24. FIG. As a result, the stress associated with the rotation (inclination) of the camera module 10 including the sensor substrate 13 is absorbed by the connecting portions 21 , 22 , 23 and 24 and is not transmitted to the main body portion 25 . Further, the rotation (inclination) of the camera module 10 is not hindered by the body portion 25 . In other words, regardless of whether the body portion 25 is rigid or flexible, the body portion 25 does not become a load that hinders the movement of the camera module 10 . In addition, there is no fear that the body portion 25 will move greatly with the movement of the camera module 10 and come into contact with surrounding members.

In order to improve followability to movement of the camera module 10 , the connection portions 21 , 22 , 23 and 24 are bent at least once between the sensor substrate 13 and the insertion end portion 26 . Specifically, each of the connecting portions 21, 22, 23, and 24 includes a portion extending in the same direction as the optical axis L and a portion extending in the opposite direction to the optical axis L. As shown in FIG. More specifically, each connection portion 21, 22, 23, 24 has a portion extending parallel to the optical axis L (perpendicular to the sensor substrate 13) and a portion extending perpendicular to the optical axis L (sensor substrate 13). 13).

The forms of the connecting portions 21, 22, 23 and 24 will be described in more detail mainly with reference to FIGS. 7 and 8. FIG. The connecting portion 21 includes a first vertically extending portion 21a, a first horizontally extending portion 21b, a second vertically extending portion 21c and a second horizontally extending portion 21d.

The first vertically extending portion 21a extends parallel to the optical axis L (perpendicular to the sensor substrate 13) from the rear surface 13b of the sensor substrate 13. As shown in FIG. The first horizontally extending portion 21b extends perpendicularly to the optical axis L (parallel to the sensor substrate 13) from the end of the first vertically extending portion 21a. The second vertically extending portion 21c extends parallel to the optical axis L (perpendicular to the sensor substrate 13) from the end of the first horizontally extending portion 21b. The second horizontally extending portion 21d extends perpendicularly to the optical axis L (parallel to the sensor substrate 13) from the end portion of the second vertically extending portion 21c.

That is, the connection portion 21 is bent three times between the sensor substrate 13 and the insertion end portion 26, and has a crank shape as a whole. Other connections 22 , 23 , 24 have substantially the same shape as connection 21 . Therefore, only the outline of the other connecting portions 22, 23, and 24 will be described.

The connecting portion 22 includes a first vertically extending portion 22a, a first horizontally extending portion 22b, a second vertically extending portion 22c and a second horizontally extending portion 22d. The connecting portion 23 includes a first vertically extending portion 23a, a first horizontally extending portion 23b, a second vertically extending portion 23c and a second horizontally extending portion 23d. The connecting portion 24 includes a first vertically extending portion 24a, a first horizontally extending portion 24b, a second vertically extending portion 24c and a second horizontally extending portion 24d.

The horizontally extending portions 21b and 21d of the connecting portion 21 and the horizontally extending portions 22b and 22d of the connecting portion 22 extend parallel to each other with the optical axis L interposed therebetween. Horizontally extending portions 23b and 23d of the connecting portion 23 and horizontally extending portions 24b and 24d of the connecting portion 24 extend parallel to each other with the optical axis L interposed therebetween.

On the other hand, horizontally extending portions 21b and 21d of the connecting portion 21, horizontally extending portions 22b and 22d of the connecting portion 22, horizontally extending portions 23b and 23d of the connecting portion 23, and horizontally extending portions 24b and 24d of the connecting portion 24 are orthogonal to each other.

Further, the horizontally extending portion 21b of the connecting portion 21 straddles over the horizontally extending portion 23d of the connecting portion 23, and the horizontally extending portion 21d of the connecting portion 21 extends over the horizontally extending portion 24b of the connecting portion 24. diving below

The horizontally extending portion 22b of the connecting portion 22 straddles over the horizontally extending portion 24d of the connecting portion 24, and the horizontally extending portion 22d of the connecting portion 22 extends under the horizontally extending portion 23b of the connecting portion 23. diving.

The horizontally extending portion 23b of the connecting portion 23 straddles over the horizontally extending portion 22d of the connecting portion 22, and the horizontally extending portion 23d of the connecting portion 23 extends under the horizontally extending portion 21b of the connecting portion 21. diving.

The horizontally extending portion 24b of the connecting portion 24 extends over the horizontally extending portion 21d of the connecting portion 21, and the horizontally extending portion 24d of the connecting portion 24 extends under the horizontally extending portion 22b of the connecting portion 22. diving.

The connecting portions 21, 22, 23, and 24 three-dimensionally intersect and concentrate near the optical axis L as described above. Furthermore, the connecting portions 21, 22, 23, and 24 circumscribe a virtual circle S (FIG. 7) centered on a point on the optical axis L. As shown in FIG.

<Portable information terminal>
FIG. 9 shows an example of a portable information terminal (portable electronic device) having a camera unit 1A according to this embodiment. The illustrated portable information terminal 100 is a smart phone. As can be understood from the description so far, the portable information terminal (smartphone) 100 shown in FIG. 9 appropriately corrects camera shake and the like when capturing moving images and still images.

(Modified example of wiring board)
A modified example of the wiring board 20 is shown in FIG. A wiring board 20A shown in FIG. 10 includes a main body portion and four connecting portions, like the wiring board 20 shown in FIG. 6 and the like. However, in FIG. 10, which is a cross-sectional view, some connection portions (connection portions corresponding to the connection portions 23 shown in FIG. 6) are not shown due to the relationship with the cutting position.

The connection portions 21, 22, and 24 shown in FIG. 10 are formed of flexible substrates like the connection portions 21, 22, and 24 shown in FIG. It has the same shape and structure as the parts 21 , 22 , 24 .

10 is formed of a flexible substrate like the connecting portion 23 shown in FIG. have a structure. Therefore, in the following description, the connecting portion not shown in FIG. 10 will be referred to as "connecting portion 23".

The main body portion 25 shown in FIG. 6 and the like is made of a rigid substrate, but the main body portion 25 shown in FIG. 10 is made of a flexible substrate. That is, in the wiring board 20A shown in FIG. 10, both the connecting portions 21, 22, 23, 24 and the body portion 25 are formed of flexible substrates. However, the connecting portions 21 , 22 , 23 , 24 are formed of a flexible substrate that is more flexible than the flexible substrate forming the body portion 25 .

The body portion 25 formed of a flexible substrate can be bent. For example, as shown in FIG. 10, the lead-out end 27 of the main body 25 can be pulled into the wire accommodating portion 55 connected to the case 50 and bent multiple times within the wire accommodating portion 55 .

From another point of view, a folded portion 28 that is folded in a direction toward the case 50 and a folded portion 28 that is folded in a direction away from the case 50 can be provided on the lead-out end portion 27 .

Furthermore, the lead-out end 27 can be pulled out from the outlet 56a provided in the ceiling 56 of the wiring housing part 55, and the lead-out end 27 can be further bent to face a predetermined connection position.

In the example shown in FIG. 10 , the lead-out end portion 27 that is led out of the wiring housing portion 55 is joined to the outer surface of the ceiling 56 with a thermally conductive adhesive 80 . Therefore, the heat of the wiring board 20A including the lead-out end portion 27 is efficiently transmitted to the ceiling 56 and dissipated. Further, sheet-like heat radiating members 81 are attached to a plurality of locations on the drawer end portion 27 . Therefore, the heat dissipation of the wiring substrate 20A including the lead end portion 27 is promoted. Examples of the heat dissipation member 81 include a carbon sheet and a graphite sheet.

Furthermore, the lead-out end 27 is also joined to a metal member 82 with a thermally conductive adhesive 80 . Therefore, the heat dissipation of the wiring substrate 20 including the lead end portion 27 is further promoted. The metal member 82 is, for example, a housing of a portable information terminal in which the camera unit 1A is mounted, or a sheet metal housed in the housing.

As described above, in the example shown in FIG. 10, the heat dissipation of the wiring board 20A is promoted. As a result, the heat in the case 50 is dissipated through the wiring board 20A, and the temperature rise of the camera module 10 (especially the imaging element 12 and the winding coils 71 and 72) is suppressed. From another point of view, the wiring board 20A functions as a heat sink that absorbs the heat of the camera module 10 and dissipates it to the outside.

(Another Modification of Wiring Board)
Another modification of the wiring board 20 is shown in FIG. A wiring board 20B shown in FIG. 11 has the same basic configuration as the wiring board 20A shown in FIG. Further, the lead end portion 27 of the wiring board 20B is joined to the ceiling 56 and the metal member 82 with the thermally conductive adhesive 80, like the lead end portion 27 of the wiring board 20A. Also, a sheet-like heat dissipation member 81 is attached to the lead end portion 27 of the wiring board 20B, like the lead end portion 27 of the wiring board 20A.

In the wiring board 20B shown in FIG. 11, a reinforcing member 90 is arranged inside at least one folded portion 28. As shown in FIG. The reinforcing member 90 is composed of two overlapping reinforcing plates 91 and 92 .

The reinforcing plate 91 has an inner surface 91 a joined to the reinforcing plate 92 and an outer surface 91 b joined to the lead-out end 27 . The reinforcing plate 92 has an inner surface 92 a joined to the reinforcing plate 91 and an outer surface 92 b joined to the lead end 27 .

Here, the folded portion 28 of the wiring board 20A is bent linearly, whereas the folded portion 28 of the wiring board 20B is bent in an arc shape. As a result, the lead-out end portion 27 of the wiring board 20B reaches the ceiling 56 (outlet 56a) with a smaller number of folds (bends) than the lead-out end portion 27 of the wiring board 20A. Specifically, four folded portions 28 are provided at the lead end portion 27 of the wiring board 20A, whereas two folded portions 28 are provided at the lead end portion 27 of the wiring board 20B. Reduction of the folded portion 28 in this way contributes to a reduction in manufacturing costs and a reduction in the thickness of the unit.

A reinforcing member 90 shown in FIG. 11 serves to form and maintain the cuff 28 . Therefore, the cross-sectional shape of the reinforcing plates 91 and 92 is trapezoidal or substantially trapezoidal. Specifically, the inner surfaces 91a, 92a are angled with respect to the outer surfaces 91b, 92b such that the outer surfaces 91b, 92b form a predetermined angle when they are joined together.

As a result, only by joining the inner surfaces 91a and 92a of the reinforcing plates 91 and 92, the folded portion 28 with a predetermined angle can be formed. Specifically, the adhesive is applied to the inner surfaces 91a and 92a of the reinforcing plates 91 and 92 whose outer surfaces 91b and 92b are bonded in advance to predetermined positions of the drawer end portion 27 . Next, the lead-out end portion 27 is bent so that the inner surface 91a of the reinforcing plate 91 and the inner surface 92a of the reinforcing plate 92 are in contact with each other. As a result, the folded portion 28 having the same angle as the angle formed by the outer surface 91b of the reinforcing plate 91 and the outer surface 92b of the reinforcing plate 92 is formed. After that, when the adhesive applied to the inner surfaces 91a and 92a of the reinforcing plates 91 and 92 hardens and the reinforcing plates 91 and 92 are integrated, that is, when the reinforcing member 90 is formed, the folded portion 28 is formed. The shape (angle) is fixed.

As is clear from the above description, by changing the inclination of the inner surfaces 91a and 92a of the reinforcing plates 91 and 92, the folded portion 28 with a desired angle can be easily and reliably formed. The reinforcing member 90 shown in FIG. 11 can be replaced with one reinforcing plate having the same cross-sectional shape as the two integrated reinforcing plates 91 and 92 .

The present invention is not limited to the above embodiments, and can be modified in various ways without departing from the scope of the invention. For example, in the above embodiments, the connection portions 21 , 22 , 23 and 24 are connected to the rear surface 13 b of the sensor substrate 13 . However, the connection positions of the connection portions 21 , 22 , 23 , 24 and the sensor substrate 13 are not limited to the rear surface 13 b of the sensor substrate 13 . For example, as shown in FIG. 12, connecting portions 21, 22, 23, and 24, one end of which is connected to the mounting surface 13a of the sensor substrate 13, may be routed to the rear surface 13b via the side surface of the sensor substrate 13. FIG.

In the above embodiment, the connecting portions 21, 22, 23, 24 and the body portion 25 are separate members. However, the connecting portions 21, 22, 23, 24 and the body portion 25 may be formed of a single member. For example, the connection portions 21, 22, 23, and 24 may be formed by dividing (branching) a portion of a single flexible substrate into a plurality of portions.

The number of connections is not limited to four. In addition, there are also embodiments in which some or all of the plurality of connection portions are partially in contact, and embodiments in which some or all of the plurality of connection portions are bundled with a clip, string, or the like.

1A... camera unit, 10... camera module, 11... lens, 12... imaging device, 13... sensor substrate, 13a... mounting surface, 13b... back surface, 14... housing, 20, 20A, 20B... wiring board, 21, 22, 23, 24... Connection parts 21a, 21c, 22a, 22c, 23a, 23c, 24a, 24c... Vertically extending parts 21b, 21d, 22b, 22d, 23b, 23d, 24b, 24d Horizontally extending parts, 25... Main body 26 Insertion end 27 Drawer end 28 Folding part 30 Module holding mechanism 40 Movable member (holder frame) 41 Bottom 42, 53 Insertion groove 43a, 43b Magnet mounting groove 44 Upper surface 50 Fixed member (case) 51 Housing space 52 Bottom inner surface 54a, 54b Coil mounting portion 55 Wiring housing 56 Ceiling 56a Exit 60 Support mechanism 61 Gimbal 62 Support member 63 Gimbal main body 63a Circular opening 64a, 64b, 65a, 65b Arm 66 Stopper plate 67 Opening 67a Bent portion 70 Drive Mechanism 71, 72 Winding Coil 73, 74 Permanent Magnet 80 Thermally Conductive Adhesive 81 Heat Dissipating Member 82 Metal Member 90 Reinforcing Member 91, 92 Reinforcing Plate 91a, 92a... inner surface, 91b, 92b... outer surface, 100... portable information terminal (smartphone), L... optical axis, L1, L2... axis, S... virtual circle, ?... angle

Claims (10)

a camera module including a sensor substrate, an imaging element mounted on the sensor substrate, and an optical element for concentrating light on the imaging element;
a movable member in which the camera module is accommodated;
a fixed member that accommodates the movable member;
a support mechanism that supports the movable member with respect to the fixed member so that the movable member can rotate with respect to the fixed member about an axis that intersects the optical axis of the optical element;
a drive mechanism that rotates the movable member with respect to the fixed member;
a wiring board connected to the sensor board and transmitting a signal output from the imaging device;
The wiring board includes a plurality of connection portions, and a body portion connected to the sensor substrate via the connection portions,
The main body includes an insertion end inserted below the sensor substrate and a draw end drawn out of the fixing member,
each of the connecting portions is arranged between the sensor substrate and the insertion end and around the optical axis, and connects the sensor substrate and the insertion end within an overlapping region; camera unit. 2. The camera unit according to claim 1, wherein each said connecting portion is bent at least once between said sensor substrate and said insertion end. 3. The camera unit according to claim 2, wherein each of said connecting portions includes a vertically extending portion extending in the same direction as said optical axis and a horizontally extending portion extending in a direction different from said optical axis. Each of said connections includes:
a first vertically extending portion extending from the sensor substrate in the same direction as the optical axis;
a first horizontally extending portion extending in a direction different from the optical axis from an end portion of the first vertically extending portion;
a second vertical extension extending in the same direction as the optical axis from an end of the first horizontal extension;
4. The camera unit according to claim 3, further comprising a second horizontal extension extending from an end of said second vertical extension in a direction opposite to said optical axis. the body portion of the wiring board is formed of a rigid board,
5. The camera unit according to claim 1, wherein said connecting portion of said wiring substrate is formed of a flexible substrate. The body portion of the wiring board is formed of a flexible substrate,
5. The camera unit according to any one of claims 1 to 4, wherein the connecting portion of the wiring board is formed of a flexible substrate that is more flexible than the flexible substrate forming the main body. a stopper plate attached to the fixed member and covering the movable member;
The stopper plate is a sheet metal having an opening that exposes at least the optical element,
The camera unit according to any one of claims 1 to 6, wherein an edge of said opening is provided with a bent portion that is bent inward. A portable information terminal comprising the camera unit according to any one of claims 1 to 7. 9. The portable information terminal according to claim 8, wherein said lead-out end of said wiring board is joined to a metal member with a thermally conductive adhesive. 10. The portable information terminal according to claim 8, wherein a sheet-like heat dissipation member is attached to said lead-out end of said wiring board.

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