JP4242243B2 - Imaging device - Google Patents

Description

  The present invention relates to an imaging apparatus in which static electricity is prevented from entering a housing.

  In recent years, mobile phones with cameras and digital cameras have been widely provided. However, when static electricity generated when a finger or the like touches is transmitted to a sensor such as a CCD or CMOS built in the mobile phone, these The sensor may be damaged. Conventionally, in order to prevent the problem that static electricity is applied to the inside of a cellular phone, shield vapor deposition (metal vapor deposition) is applied to the housing, and the housing and the ground line on the substrate are connected by a lead wire or the like. With this configuration, static electricity generated around the mobile phone is dropped on the housing, and the static electricity that has fallen on the housing is guided to the ground line via a lead wire or the like. This prevents static electricity generated around the mobile phone from being transmitted to a sensor such as a CCD or CMOS built in the mobile phone.

In addition, in order to prevent the problem of static electricity being transmitted to the inside of a digital camera, there is provided a method of metal-depositing an operation surface that comes into contact with a finger among resin operation buttons for operating the camera. According to this method, when the operation button is operated with a finger and the operation button comes close to the switch terminal, electrostatic discharge generated between the two is suppressed. This can reduce camera malfunction due to static electricity (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-30803 (page 2-4, FIG. 4)

  However, in the conventional static electricity prevention method described above, there is a problem that an opening is formed in the housing in order to take a picture with the camera module, and static electricity enters the inside of the housing from the opening. Therefore, the malfunction or breakage of the camera module cannot be reliably prevented, and the operation reliability of the camera module is lowered. In addition, there is a problem in that metal deposition is performed on the entire casing case in a considerable cost and the degree of freedom in design is reduced.

  The present invention has been made in consideration of the above-described conventional problems, and provides an imaging apparatus that can reliably prevent static electricity from entering the inside of the housing and improve the reliability of the operation of the camera module. It is an object.

The present invention includes a housing in which an opening is formed, a camera module disposed inside the housing, and a substrate for supplying power to the camera module, and imaging is performed by the camera module through the opening. In the imaging device to be performed, an exterior member having at least a surface portion made of a conductive material is provided around the opening, and a surface of the exterior member attached to the housing is formed on the surface of the exterior member and the substrate. is characterized in that extending portions in the ground line Ru are electrically connected is formed with.

In the present invention, it is preferable that a through hole through which the extension portion is inserted is formed on a surface of the housing to which the exterior member is attached.

  Further, in the present invention, the camera module is held by a holder having at least a surface portion made of a conductive material and electrically connected to the ground line, and the holder is electrically connected to the extending portion. Preferably it is.

  Further, according to the present invention, the casing is configured by fitting a first case provided with the exterior member and a second case provided with the camera module and the substrate, respectively, and the holder A first arm portion having elasticity is provided at an upper end portion of the first arm portion, and when the first case and the second case are fitted, the first arm portion becomes the extension portion. Preferably, the exterior member is abutted against the holder, and the exterior member is electrically connected to the holder via the first arm portion and the extension portion.

  Further, according to the present invention, a second arm portion having elasticity is formed on the lower end portion of the holder, and when the first case and the second case are fitted, the second case It is preferable that the arm portion is in contact with the ground line while being urged, and the holder is electrically connected to the ground line via the second arm portion.

  According to the imaging apparatus of the present invention, static electricity does not enter through the opening of the housing that is necessarily opened, and static electricity is not transmitted to the camera module, so that the camera module is reliably damaged or malfunctioned. Therefore, the reliability of the operation of the camera module can be improved.

  Embodiments of an imaging apparatus according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram illustrating a camera-equipped mobile phone 1 which is an embodiment of an imaging apparatus according to the present invention. As shown in FIG. 1, the mobile phone 1 includes a case 4 formed by fitting a first case 2 and a second case 3, a liquid crystal screen 5 formed on the case 4, A camera unit 7 including a camera filter 6 and the like and a telephone unit 9 including operation buttons 8 and the like are provided. In the mobile phone 1, two housings 4a and 4b are formed so as to be rotatable about a rotation shaft 10, a liquid crystal screen 5 is formed on the surface of one housing 4a, and the other housing 4b. An operation button 8 is formed on one surface, and a camera filter 6 is formed on the other surface.

  FIG. 2 is a perspective view showing a part of the outer surface of the first case 2 of the housing 4b. As shown in FIG. 2, a circular filter fitting recess 12 is formed in the first case 1. A circular circular opening 13 that is slightly smaller than the filter fitting recess 12 is formed at the center of the bottom surface of the filter fitting depression 12, and the filter fitting depression 12 on the side of the circular opening 13 is formed. A rectangular rectangular through hole 14 is formed on the bottom surface. A rising portion 15 is formed along the outer periphery of the filter fitting recess 12 on the outer surface of the first case 2 around the filter fitting recess 12.

  FIG. 3 is a perspective view of the outer surface of the first case 2 showing a state in which the camera filter 6 is attached to the first case 2 of the other housing 4b. FIG. 4 is a perspective view of the other housing 4b. FIG. 4 is a perspective view of the inner surface of the first housing case 2 showing a state in which the camera filter 6 is attached to the first housing case 2. As shown in FIGS. 3 and 4, the camera filter 6 is fitted in the filter fitting recess 12 formed in the first case 2 and the substantially transparent filter body 18 is located in the circular opening 13. It is disguised.

  FIG. 5 is a perspective view showing the front surface of the camera filter 6, and FIG. 6 is a perspective view showing the back surface of the camera filter 6. As shown in FIGS. 4, 5, and 6, the camera filter 6 includes a conductive outer frame member 17 having a conductivity and a filter main body 18 fitted in the outer member 17. The exterior member 17 is made of, for example, a conductive material such as metal, and a circular opening 17 a is formed in a flat portion of the exterior member 17, and the circular opening 13 formed in the first case 2 is the exterior member 17. It is communicated to. In addition, the surface of the flat portion of the exterior member 17 is provided with a decoration 17b made of characters, symbols, and the like. In addition, an extended portion 19 formed in a hook shape is formed on the side surface portion of the exterior member 17. The extending part 19 is hanged downward from the lower end of the side part (FIG. 5), and the tip is bent outward in an L shape.

  The filter body 18 is formed in a circular shape having a size corresponding to the inner circumferential circle of the exterior member 17, and the thickness thereof is formed so as not to exceed the height of the side surface portion of the exterior member 17. The surface 18 is formed on the inner side of the surface of the flat portion of the exterior member 17, and the exterior member 17 protrudes outward. The outer edge portion of the surface of the filter body 18 is in close contact with the exterior member 17, and an annular double-sided tape 20 is attached to the back surfaces of the outer periphery of the exterior member 17 and the filter body 18.

  As shown in FIGS. 3 and 4, the camera filter 6 described above is fitted into a filter fitting recess 12 formed in the first case 2, and the surface of the camera filter 6 is the surface of the first case 2. Exposed outside. At this time, the double-sided tape 20 shown in FIG. 6 is interposed between the back surface of the filter body 18 and the bottom surface of the filter fitting recess 12, and the camera filter 6 is attached to the filter fitting recess 12 by the adhesive force of the double-sided tape 20. To be joined. Further, the extending portion 19 of the exterior member 17 is inserted into the rectangular through hole 14 formed in the bottom surface of the filter fitting recess portion 12 and protrudes to the inside of the first case 2, and the extending portion 19 is The rectangular through hole 14 is hooked. In addition, the opening 17a of the exterior member 17 and the circular opening 13 of the filter fitting recess 12 are formed at positions facing each other, and light outside the housing 4b passes through the central portion of the filter body 18 and passes through the housing. 4b is transmitted.

  On the other hand, in the second case 3 shown in FIG. 1, a plate-like substrate 21 and a camera module 22 mounted on the substrate 21 are provided. 7 is a perspective view of the camera module 22 mounted on the substrate 21 as viewed from one side, and FIG. 8 is a perspective view of the camera module 22 mounted on the substrate 21 as viewed from the other direction. As shown in FIGS. 7 and 8, a patterned ground line 11 is formed on the upper surface of the substrate 21, and a rectangular opening 21 a is formed in the substrate 21. The lower end of the camera module 22 including the lens portion 22a and the like is inserted into the opening 21a. The camera module 22 is held by a holder 23 formed around the camera module 22, and the holder 23 is made of a resin material whose surface is formed of a conductive material. For example, a metal is formed on the surface of a resin base material. A metal film is formed by vapor deposition. Of course, the holder 23 may be formed of die-cast metal or the like.

  FIG. 9 is a perspective view of the holder 23 as viewed from one side, and FIG. 10 is a perspective view of the holder 23 as viewed from the other side. As shown in FIGS. 7, 8, 9, and 10, the holder 23 includes an upper lid portion 24 having a circular opening 24 a, a side wall portion 25 that sandwiches the camera module 22 from both sides, and an outer side of the side wall portion 25. A conductive first arm portion 26 attached to the upper end of the side surface and a conductive second arm portion 27 attached to the lower end of the outer surface of the side wall portion 25 are integrally formed.

  The upper lid portion 24 is formed so as to face the back surface of the camera filter 6 shown in FIG. 4 and is covered from above the camera module 22. The upper end of the camera module 22 in which the lens portion 22a is formed is inserted into the opening 24a. Has been. Side wall portions 25 are respectively provided on both sides of the upper lid portion 24, and the side wall portions 25 are formed so as to face the side surfaces of the camera module 22 and surround the camera module 22. A convex camera module temporary fixing claw 28 is formed on the inner side surface of the side wall portion 25 so as to be hooked to the camera module 22 and temporarily fix the camera module 22 to the holder 23. Are formed with convex camera holder temporary fixing claws 29 that are hooked to the substrate 21 to temporarily fix the holder 23 to the substrate 21.

  The first arm portion 26 projecting from the outer surface of the side wall portion 25 is formed of an elastic material and is configured to bend in the vertical direction about the base end joined to the side wall portion 25 as an axis. ing. Further, the surface of the first arm portion 26 is formed of a conductive material. For example, the first arm portion 26 has a configuration in which metal vapor deposition is performed on the surface of a rod-shaped resin material. As for the shape of the first arm portion 26, the proximal end is bent in the horizontal direction, and the middle and the distal end extend horizontally along the side wall portion 25. The first arm portion 26 having such a shape is biased in the direction of the extending portion 19 disposed above. A hemispherical contact portion 26 a is formed on the top surface of the first arm portion 26.

  Further, the second arm portion 27 protruding from the outer side surface of the side wall portion 25 has elasticity to bend in the vertical direction with the base end as an axis similarly to the first arm portion 26 and has a conductive surface. It is formed from what you have. The shape of the second arm portion 27 joined to the side wall portion 25 is such that the base end is bent vertically downward and further bent in the horizontal direction, and the middle and the distal end are horizontally extended along the side wall portion 25. Yes. The second arm portion 27 having such a shape is elastic in the direction of the substrate 21. A hemispherical contact portion 27 a is formed on the lower surface of the distal end of the second arm portion 27. In this example, the first and second arm portions 26 and 27 are formed integrally with the holder 23. In this case, a metal film is formed by vapor-depositing the entire holder 23 to form the first and second arms. The two arms 26 and 27 can also be made conductive, which simplifies the process.

  FIG. 11 is a perspective view illustrating a state where the camera module 22 is mounted on the substrate 21, and FIG. 12 is a cross-sectional view illustrating a state where the camera module 22 is mounted on the substrate 21. In FIG. 11, the first case 2 is omitted, and the camera filter 6 shown in FIG. 11 is in a state of being fitted to the first case 2. As shown in FIGS. 11 and 12, when the first case 2 and the second case 3 are fitted, the first arm portion 26 having elasticity is in contact with the first arm via the contact portion 26a. The extension part 19 of the exterior member 17 fitted in the case 2 is contacted, and the first arm part 26 is in contact with the extension part 19 in a biased state. The elastic second arm portion 27 is in contact with the ground line 11 formed on the substrate 21 through the contact portion 27a, and the second arm portion 27 is biased with respect to the ground line 11. It is in contact with.

  The exterior member 17 is electrically connected to the holder 23 via the extending portion 19 and the first arm portion 26, and the holder 23 is a ground line formed on the substrate 21 via the second arm portion 27. 11 is electrically connected. Therefore, the extending part 19 is electrically connected to the holder 23, the extending part 19 is electrically connected to the ground line 11, and the exterior member 17 is electrically connected to the ground line 11. The lens portion 22a of the camera module 22 faces the camera filter 6 (the central portion of the filter main body 18 formed in the circular opening 13 of the filter fitting recess 12 and the opening 17a of the exterior member 17). . In addition, the camera module 22 is connected to a flexible substrate 30 disposed outside the holder 23 and connected to the substrate 21 to be supplied with power.

  Next, a method for manufacturing the mobile phone 1 having the above-described configuration will be described.

  First, a process of assembling the camera filter 6 shown in FIGS. 5 and 6 is performed. Specifically, as shown in FIGS. 5 and 6, the filter body 18 is fitted into the exterior member 17, and the exterior member 17 and the filter body 18 are pressure-bonded. And the center part of the surface of the filter main body 18 which opposes the plane part back surface of the exterior member 17 is exposed by the opening 17a of the exterior member 17, and the cyclic | annular double-sided tape 20 is stuck on the back surface of the filter body 18 of the other side. .

  Next, a process of attaching the camera filter 6 shown in FIGS. 5 and 6 to the first case 2 shown in FIG. 2 is performed. Specifically, as shown in FIGS. 3 and 4, the camera filter 6 is fitted in the filter fitting recess so that the back surface of the camera filter 6 to which the double-sided tape 20 is attached faces the bottom surface of the filter fitting recess 2. The portion 12 is inserted along the rising portion 15. At this time, the extending portion 19 formed in the exterior member 17 is inserted into the rectangular through hole 14 formed in the filter fitting recess 12 to project the extending portion 19 into the housing 4b, and the rectangular through hole Hang on the hole 14. Further, the camera filter 6 is joined into the filter fitting recess 12 by the adhesive force of the double-sided tape 20 adhered to the back surface of the camera filter 6.

  On the other hand, a process of holding the camera module 22 by the holder 23 shown in FIGS. 9 and 10 is performed. Specifically, as shown in FIGS. 7 and 8, the camera module 22 is covered with a holder 23 from above, and the camera module 22 is temporarily fixed to the holder 23. At this time, the upper end of the camera module 22 in which the lens portion 22a is formed is inserted into the opening 24a formed in the upper lid portion 24 of the holder 23, and at the same time, protruding from the inner surface of the side wall portion 25 of the holder 23, FIG. The camera module temporary fixing claw 28 shown in FIG.

  Next, a process of mounting the camera module 22 held by the holder 23 on the substrate 21 formed in the second case 3 is performed. Specifically, as shown in FIGS. 7 and 8, the lower end of the camera module 22 is inserted into the opening 21 a formed in the substrate 21, and the second arm portion 27 attached to the side wall portion 25 of the holder 23 is attached. The substrate 21 is brought into contact via a contact portion 27 a formed at the tip of the second arm portion 27. At this time, the camera holder temporary fixing claw 29 shown in FIGS. 9 and 10 protruding from the side wall portion 25 of the holder 23 is hooked around the opening 21 a on the lower surface of the substrate 21.

  Next, the first case 2 and the second case 3 are fitted together, and the camera filter 6 fitted in the first case 2 is mounted above the camera module 22 mounted in the second case 3. The step of arranging is performed. Specifically, as shown in FIGS. 11 and 12, the first case 2 in which the camera filter 6 is previously fitted by the above-described process is fitted to the second case 3 so as to face each other. Is opposed to the lens portion 22 a formed at the upper end of the camera module 22. At this time, the extending portion 19 of the exterior member 17 projecting from the rectangular through hole 14 of the filter fitting recess 12 is connected to the contact portion 26 a at the tip of the first arm portion 26 attached to the side wall portion 25 of the holder 23. Contact through.

  In the above-described embodiment, the step of fitting the camera filter 6 to the first case 2 is performed first, and then the step of fitting the first case 2 and the second case 3 is performed. However, in the present invention, the step of fitting the above-described camera filter 6 into the first case 2 may be performed after the step of fitting the first case 2 and the second case 3 together. In the above-described embodiment, the filter body 18 is shown as an example of a filter. However, the present invention may be a lens or a transparent lens cover. The camera filter 6 may be made of metal vapor deposition or metal. In short, the exposed surface has conductivity by a metal film or the like, and the surface and the extending portion 19 are electrically connected. It only has to be done.

  According to the mobile phone 1 having the above-described configuration, the exterior member 17 is formed of a metal having conductivity, so even if it is the resin casing 4, the finger or the like is first attached to the exterior member 17. Therefore, the static electricity generated by the contact of the finger or the like can be released first, and the finger or the like directly touches the lens portion 22a, and the static electricity enters the sensor or the like in the camera module 22 through the lens portion 22a. This can prevent the camera module 22 from being damaged or malfunctioning. In addition, static electricity generated in the vicinity of the circular opening 13 of the housing 4b that is inevitably opened falls on the exterior member 17, the static electricity is released, and the static electricity does not enter from the circular opening 13, and the camera module 22 Can be prevented, and the mobile phone 1 with high operation reliability can be provided.

  In addition, since the exterior member 17 is formed with an extending portion 19 that is electrically connected to the ground line 11, static electricity that has fallen on the exterior member 17 formed outside the housing 4b is grounded in the housing 4b. Guided to line 11. Although it is difficult to match the orientation of the circular exterior member 17, the camera filter 6 is disposed in an orientation in which the extending portion 19 matches the contact portion 26 a of the first arm portion 26. The orientation of the decorated decoration 17b can be easily adjusted, and the double-sided tape 20 can be bonded to the housing 4b without mistakes in the vertical and horizontal directions of the decoration 17b.

  Further, since the camera module 22 is held by the conductive holder 23, the ground line 11 does not extend to the exterior member 17. In addition, since the conductive holder 23 surrounding the camera module 22 also serves as a shield, the entry of static electricity from any direction can be prevented. Therefore, it is not necessary to perform metal vapor deposition on the entire housing 4, the amount of metal vapor deposition can be reduced, and cost can be reduced.

  Further, the holder 23 is formed with a first arm portion 26 having elasticity, and the first arm portion 26 is in contact with the extending portion 19, so the first case 2 and the second case 3. Are engaged with the first arm portion 26 energizing the extending portion 19, and a static electricity path from the exterior member 17 to the holder 23 is reliably ensured. For this reason, complicated wiring becomes unnecessary and reliable contact is obtained. Further, since the first arm portion 26 is in contact with the extending portion 19, the holder 23 that holds the camera module 22 can be securely fixed. Furthermore, when the mobile phone 1 falls, the impact on the camera module 22 held by the holder 23 can be mitigated by the elasticity of the first arm portion 26. Furthermore, since the holder 23 itself has conductivity, a shielding effect can be obtained for the camera module 22 held inside.

  Also, the holder 23 is formed with a second arm portion 27 having elasticity, and the second arm portion 27 is in contact with the ground line 11 on the substrate 21, so that the holder 23 that holds the camera module 22. The first arm 26 and the second arm 27 are urged in opposite directions, and a static electricity path from the holder 23 to the ground line 11 on the substrate 21 is ensured. As a result, the holder 23 can be fixed in a stretched state, the camera module 22 can be more securely held at a predetermined position, and the static electricity that has fallen on the holder 23 can be reliably guided to the ground line 11. Can do.

  Further, the decoration 17b made of characters, symbols, figures, lines or the like is provided on the surface of the exterior member 17, so that the decoration can be applied even when the housing case 1 is fitted and the internal situation cannot be visually confirmed. By confirming the orientation of the 17b or the like, it can be confirmed whether or not the extending portion 19 and the first arm portion 26 are in contact with each other.

  The mobile phone 1 which is an embodiment of the imaging device according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist thereof. . For example, in the above-described embodiment, the metal exterior member 17 is used, but the present invention forms a conductive exterior member by performing metal vapor deposition on the surface of a resin base material. Also good. In the above-described embodiment, the holder 23, the first arm portion 26, and the second arm portion 27 are each formed by performing metal vapor deposition on a resin base material. You may use a holder made of metal, the first arm, or the second arm. In this case, the first arm or the second arm is made of a thin steel plate or the like and is made of a flexible material. You may have it.

  In the above-described embodiment, only one extending portion 19 and first arm portion 26 are formed. However, in the present invention, a plurality of extending portions and first arm portions may be formed. Good. Moreover, you may lengthen any one contact surface of an extension part or a 1st arm part, and you may make a several extension part or a some 1st arm part contact the said contact surface. As a result, even if the camera filter rotates slightly, the extension portion and the first arm portion are not separated from each other, and a static electricity path from the exterior member 17 to the holder 23 can be reliably ensured.

  Further, in the above-described embodiment, the holder 23 is configured to sandwich both sides of the camera module 22 by the two side wall portions 25. However, in the present invention, the holder may be formed in a cylindrical shape. The camera module 22 may be inserted through the holder. In the embodiment described above, the upper lid portion 24 and the side wall portion 25 constituting the holder 23 are integrally formed. However, in the present invention, the upper lid portion and the side wall portion facing each surface of the camera module are provided. You may use the holder formed by assembling | attaching each so that attachment or detachment is possible.

  In addition, the imaging apparatus according to the present invention is not limited to the above-described mobile phone 1, and may be other electronic devices such as a digital camera, a video camera, and a notebook computer.

1 is an external view illustrating an imaging apparatus according to an embodiment of the present invention. It is a perspective view showing the surface of the 1st case in the embodiment of the present invention. It is a perspective view showing the surface of the 1st case where the camera filter in the embodiment of the present invention was inserted. It is a perspective view showing the back surface of the 1st case with which the camera filter in embodiment of this invention was mounted. It is a perspective view showing the surface of the camera filter in the embodiment of the present invention. It is a perspective view showing the back surface of the camera filter in the embodiment of the present invention. It is a perspective view showing the state by which the camera module was mounted in the board | substrate in embodiment of this invention. It is a perspective view showing the state by which the camera module was mounted in the board | substrate in embodiment of this invention. It is a perspective view showing the holder in embodiment of this invention. It is a perspective view showing the holder in embodiment of this invention. It is a perspective view showing the inside of a case in an embodiment of the present invention. It is sectional drawing showing the inside of the housing | casing in embodiment of this invention.

Explanation of symbols

1 Mobile phone (imaging device)
2 First case 3 Second case 4 (4a, 4b) Housing 11 Ground line 13 Circular opening (opening)
14 Rectangular through hole (through hole)
17 exterior member 19 extending part 21 substrate 22 camera module 23 holder 26 first arm part 27 second arm part

Claims (5)

In an imaging apparatus, comprising: a housing in which an opening is formed; a camera module disposed in the housing; and a substrate for supplying power to the camera module, and performing imaging by the camera module through the opening ,
An exterior member having at least a surface portion made of a conductive material is provided around the opening,
Wherein the said surface to be attached to the housing of the outer member, the imaging characterized in that the extending portion surface and Ru is electrically connected to the ground line formed on the substrate of the outer member is formed device .   The imaging apparatus according to claim 1, wherein a through-hole through which the extending portion is inserted is formed on a surface of the housing to which the exterior member is attached.   The camera module is held at least by a holder made of a conductive material and electrically connected to the ground line, and the holder is electrically connected to the extending portion. The imaging device according to claim 2. The housing is configured by fitting a first case provided with the exterior member and a second case provided with the camera module and the substrate, respectively, and an upper end portion of the holder A first arm having elasticity is provided;
When the first case and the second case are fitted, the first arm portion is brought into contact with the extended portion in a biased state, and the exterior member is the first case. The imaging apparatus according to claim 3, wherein the imaging apparatus is electrically connected to the holder via an arm portion and the extending portion. A second arm portion having elasticity is formed on the lower end portion of the holder,
When the first case and the second case are fitted, the second arm portion is brought into contact with the ground line while being urged, and the holder is attached to the second arm. The imaging apparatus according to claim 4, wherein the imaging apparatus is electrically connected to the ground line through a section.

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