JP2007180218A - Mobile terminal device, and imaging apparatus unit therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain an electromagnetic shielding function wherein cost reduction is materialized by reducing the number of components. <P>SOLUTION: There is provided a camera shielding structure 13 which is formed of an electric conductive material, latched by a mounting part 8 at the device side while holding a camera chassis 11, and brought into contact with a front case 4 at the movable side of ground potential. By this way, the single camera shielding structure 13 can possess and use both the function to be latched by a mounting part 8 at the device side while holding a camera chassis 11, and the function to perform electromagnetic shielding for the camera chassis 11 which may become a source of electromagnetic noise. Accordingly, it is to be made possible to attain cost reduction by utilizing the capability of reducing numbers of parts. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mobile terminal device such as a mobile phone with an imaging device and an imaging device unit for the mobile terminal device, and more particularly, to a mobile terminal device and a mobile terminal device including an imaging device with a large number of pixels that need countermeasures against electromagnetic noise. The present invention relates to an image pickup device unit.

  2. Description of the Related Art In recent years, cameras for mobile phones with cameras that are widely used include a camera IC in which a solid-state imaging device such as a CCD (Charge Coupled Device) and an objective lens are integrated together with other chip components on a ceramic substrate. In addition, the camera unit is configured with a flexible cable or the like for ensuring electrical connection with the main board on the apparatus main body side. As for the assembly of the camera unit to the apparatus main body, there are proposed examples according to Patent Documents 1 and 2, for example.

  FIG. 5 is a schematic longitudinal sectional side view showing an example of camera unit assembly in a conventional camera-equipped mobile phone. FIG. 5 shows a structure near the connecting portion of the movable side casing of the camera-equipped mobile phone in which the fixed side casing on the key side and the movable side casing on the display unit side are foldably connected. The housing 100 is divided into two parts by a combination of a movable front case 103 on which an LCD (Liquid Crystal Display) 102 held by an LCD holder 101 is disposed and a movable rear case 104 positioned on the outer surface side in a folded state. Consists of. Here, the camera main body 105 mainly composed of a camera IC or the like is held by a resin camera holder 106 having a substantially U-shaped cross section in accordance with the shape of the camera main body 105, and the movable front case 103. The movable body rear case 104 which is disposed on the apparatus side mounting portion 103a set in the connecting portion side portion and forms a pair with the movable front case 103 is assembled and fixed by pressing the camera body 105. Reference numeral 107 denotes a cushioning member such as a sponge provided on the outer surface side of the bottom surface of the camera holder 106. Reference numeral 108 denotes a transparent camera panel attached to a part of the movable rear case 104 in order to enable photographing by the camera body 105 assembled toward the outer surface side. Reference numeral 109 denotes an LCD panel that closes the opening 103 b for the LCD 102 formed in the movable front case 103 so as to be visible.

JP 2004-172790 A JP-A-2004-200904

  Here, as mobile phones become smaller and have higher performance, problems due to electromagnetic noise have become serious. In the case of camera-equipped mobile phones, the built-in camera unit is not only affected by electromagnetic noise but also itself. Since electromagnetic noise is generated, the electromagnetic noise generated during the operation of the camera also contributes to a decrease in reception sensitivity of an antenna of a mobile phone, for example. In particular, in recent years, with the increase in the number of pixels of a built-in camera (CCD), higher performance has progressed, and accordingly, countermeasures against electromagnetic noise have become essential.

  Therefore, conventionally, as shown in FIG. 5, the outer peripheral surface of the camera holder 106 holding the camera body 105 that is the source of electromagnetic noise is covered with a copper foil tape 110, and the copper foil tape 110 is covered. It is radiated by electrically connecting to the metal movable front case 103 having a ground potential through a shield foam 111 made of a conductive cushion material, and shielding the copper foil tape 110 with the housing ground potential. To suppress electromagnetic noise. In place of the copper foil tape 110, there are an example in which another shield sheet metal is provided around the camera holder 106, and an example in which a shield holder whose surface is plated with a conductor as shown in Patent Document 1 is used.

  However, conventional electromagnetic noise countermeasures may include addition of noise countermeasure parts such as copper foil tape 110 and shield sheet metal, which are separate parts from the structure for holding and fixing the camera body (for example, camera holder 106). Further, it is necessary to perform noise countermeasure processing such as conductor plating. As a result, an increase in the number of parts and an increase in processing steps occur, resulting in an increase in apparatus cost, which is disadvantageous for downsizing and space saving.

  The present invention has been made in view of the above, and an object of the present invention is to provide a mobile terminal device and an imaging device unit for the mobile terminal device that can achieve the electromagnetic shielding function by reducing the cost by reducing the number of parts. And

  In order to solve the above-described problems and achieve the object, a mobile terminal device according to the invention of claim 1 is a mobile terminal device including an imaging device mounted on a device-side mounting unit, and has electrical conductivity. An imaging device holding part is formed, which is formed of a material having the imaging device, holds the imaging device, is engaged with the device-side mounting portion, and comes into contact with the device housing having a ground potential.

  According to a second aspect of the present invention, in the portable terminal device according to the first aspect, the imaging device holding component and the device-side mounting portion are fitted for locking the imaging device holding component to the device-side mounting portion. It is characterized by comprising a composite structure.

  According to a third aspect of the present invention, in the portable terminal device according to the first or second aspect, the imaging device holding component has a spring structure that elastically contacts the device housing.

  A portable terminal device according to a fourth aspect of the present invention is the portable terminal device according to any one of the first to third aspects, wherein the imaging device holding component includes a bottom surface portion and a side surface portion that cover a bottom portion and a side surface of the imaging device. And a bottom raising part interposed between the bottom part of the imaging apparatus holding part and the bottom part of the imaging apparatus.

  An imaging device unit for a portable terminal device according to a fifth aspect of the invention is an imaging device unit for a portable terminal device mounted on a device-side mounting portion of the portable terminal device, and includes an imaging device body including an imaging device IC, An imaging device holding part that is formed of a material having electrical continuity, holds the imaging device main body, is engaged with the device-side mounting portion, and comes into contact with the device housing having a ground potential. .

  According to the first aspect of the present invention, there is provided an imaging device holding component that is formed of a material having electrical conductivity, holds the imaging device, is locked to the device-side mounting portion, and comes into contact with the device housing of the ground potential. Therefore, the function of holding the imaging device and locking it to the device-side mounting portion and the function of electromagnetically shielding the imaging device that can be a source of electromagnetic noise can be shared by a single imaging device holding component. The number of points can be reduced, and the cost can be reduced.

  According to the second aspect of the present invention, the imaging device holding component and the device side mounting portion have a fitting structure for locking the imaging device holding component to the device side mounting portion. It is possible to securely and easily position and lock the imaging device holding component to the device-side mounting part without the need for a separate fixing component, further reducing the number of components and reducing costs. And the assembling property can be improved.

  According to the third aspect of the present invention, since the imaging device holding component has a spring structure that elastically contacts the grounded device housing, the imaging device holding component can be securely attached to the device housing without using another component. The casing can be grounded by being brought into contact with the device, and the electromagnetic shielding function can be surely exhibited.

  According to the fourth aspect of the present invention, the image pickup apparatus holding part formed between the bottom and the bottom of the image pickup apparatus is formed in a U-shaped cross section having a bottom face and a side face covering the bottom and side faces of the image pickup apparatus. The height position of the imaging device held by the imaging device holding component can be adjusted by the bottom raising component, so that a conventional thick imaging device holder dedicated to holding is used. Thus, the imaging device holding component can be applied to a conventional structure.

  According to the invention of claim 5, the imaging device holding component that is formed of an electrically conductive material, holds the imaging device main body, is locked to the device-side mounting portion, and comes into contact with the grounded device housing. Because it is equipped, the function of holding the imaging device body and locking it to the device side mounting part and the function of electromagnetically shielding the imaging device body that can be a source of electromagnetic noise can be combined with one imaging device holding part, Therefore, the number of parts can be reduced, and the cost can be reduced.

  Exemplary embodiments of a portable terminal device and an imaging device unit for a portable terminal device according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

  In this embodiment, a camera is used as an imaging device, and an example of application to a mobile phone with a camera as a mobile terminal device is shown. 1 is an external perspective view showing an example of assembly of a camera unit in a camera-equipped mobile phone according to an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a line AA in FIG. It is sectional drawing of a part. FIG. 1 and FIG. 3 show the vicinity of the connecting portion of the movable casing of the camera-equipped mobile phone in which the fixed casing including various keys and the movable casing serving as the display unit are foldably connected by a hinge structure. The movable housing 1 includes a movable front case 4 on which an LCD (Liquid Crystal Display) 3 held by an LCD holder 2 is disposed, and a movable rear that is positioned on the outer surface side in a folded state. It consists of a two-part structure by combination with case 5. The movable front case 4 includes a hinge portion 6 that forms a part of the hinge structure at the end. The movable front case 4 has an opening 4 a for exposing the display screen of the LCD 3 so as to be visible to the outside. The opening 4 a is closed by a transparent LCD panel 7.

  Here, the movable-side front case 4 is made of a metal having conductivity, and is electrically connected to a ground terminal of a circuit board (not shown) built in the movable-side housing 1, thereby An apparatus housing having a ground potential for grounding the mobile phone is configured. Further, the end of the movable front case 4 near the hinge 6 side is formed as a concave device side mounting portion 8 for mounting the camera unit (imaging device unit) 10 together with the end of the LCD holder 2. ing.

  The camera unit 10 includes a camera body 11 as a main body of the imaging device, a camera holding frame 12 and a camera shield structure 13 as an imaging device holding part. The camera body 11 has a camera IC (imaging device IC) in which a solid-state imaging device such as a CCD and an objective lens are integrated, mounted on a ceramic substrate 14 together with other chip components, and is electrically connected to the circuit board side. It has a structure in which the flexible cable 15 is secured from the bottom side to the side. The camera holding frame 12 has a square frame shape formed in accordance with the outer peripheral shape and size of the camera body 11 and is fitted to protect the periphery of the camera body 11. In FIG. 3, the camera body 11 including the camera holding frame 12 is illustrated.

  The camera shield structure 13 is a sheet metal structure formed of a material having electrical conductivity, such as a copper plate or a stainless plate. FIG. 4 is an enlarged perspective view showing the configuration of the camera shield structure 13. The camera shield structure 13 is for holding the camera body 11 (including the camera holding frame 12) and locking it to the apparatus side mounting portion 8 and shielding electromagnetic noise radiated from the camera body 11. A bottom surface portion 13a and a pair of side surface portions 13b covering the bottom portion and both side surfaces located in the longitudinal direction of the movable housing 1 in correspondence with the shape and size of the camera body 11 (including the camera holding frame 12). It is formed in a U-shaped cross-section that it has integrally.

  Here, the camera shield structure 13 and the apparatus side mounting portion 8 include a fitting structure 16 for locking the camera shield structure 13 to the apparatus side mounting portion 8. The fitting structure 16 includes a pair of protrusions 8a formed on the inner wall surface of the apparatus-side mounting portion 8, and a hole 13c formed on the pair of side surface portions 13b of the camera shield structure 13 and fitted into the protrusion 8a. It consists of a combination. The hole 13c is a locking piece 13d portion which is formed by separation in the vertical direction in the side surface portion 13b so that the hole 13c is securely locked to the protrusion 8a and is expanded outwardly to provide springiness. Is formed. Further, the locking piece 13d portion includes a spring structure portion having a bent leaf spring structure formed by bending outward a tongue piece 13e formed by cutting out the hole 13c portion.

  Further, the camera unit 10 of the present embodiment includes an insulating buffer member 17 such as a sponge attached to the outer surface side of the bottom surface portion 13a of the camera shield structure 13, the inner surface side of the bottom surface portion 13a, and the camera body. 11 and a bottom raising part 18 made of an insulating buffer material such as sponge or rubber attached to the inner surface side of the bottom surface portion 13a by being attached to the inner surface side of the bottom surface portion 13a. The buffer member 17 is for locking the camera unit 10 and the camera shield structure 13 to the apparatus-side mounting portion 8 with a buffering effect against mechanical shock. The bottom raising component 18 secures electrical insulation between the flexible cable 15 disposed on the bottom of the camera body 11 and the camera shield structure 13 made of sheet metal, and the conventional thick camera holder 106. And the height position of the camera body 11 held by the camera shield structure 13 by adjusting the difference in thickness between the camera shield structure 13 and the thin camera shield structure 13 of this embodiment. It is for aligning to be the same as in the case of structural products.

  The movable rear case 5 has an opening 5a for enabling photographing of the camera body 11 assembled to the apparatus-side mounting portion 8 toward the outer surface, and the opening 5a is a transparent camera. It is blocked by the panel 19. Further, a shield foam 20 made of a conductive cushion material that can be brought into contact with the locking piece 13d portion is provided at a boundary portion between the device side mounting portion 8 (movable side front case 5) and the movable side rear case 5.

  The camera-equipped mobile phone according to the present embodiment includes a camera having a bottom-up component 18 so that the camera holding frame 12 is fitted to the camera body 11 and the camera body 11 (including the camera holding frame 12) is covered. The camera unit 10 is configured by fitting the shield structure 13. The camera unit 10 is disposed on the apparatus-side mounting portion 8 of the movable front case 4, and the movable rear that forms a pair with the movable front case 4. The case 5 is assembled and fixed by pressing the camera body 11.

  Here, when the camera shield structure 13 holding the camera body 11 is inserted into the apparatus side mounting portion 8 from above, the locking piece 13d of the side surface portion 13b of the camera shield structure 13 is elastically deformed. The hole 13c formed in the piece 13d is fitted into the protrusion 8a formed in the device side mounting portion 8, and the camera shield structure 13 is locked to the device side mounting portion 8 in a retaining state. Further, the tongue piece 13e having a bent leaf spring structure formed in the locking piece 13 portion directly elastically contacts the inner wall surface of the apparatus-side mounting portion 8, that is, the movable-side front case 4. Here, the camera shield structure 13 is formed of a material having electrical conductivity, and the camera shield structure 13 is also connected to the housing ground by directly contacting the movable front case 4 made of metal and having a ground potential. Maintained at potential. In this way, the camera shield structure 13 that holds the camera body 11 and covers the periphery of the camera body 11 is maintained at the chassis ground potential, thereby suppressing electromagnetic noise emitted by the camera body 11 that can be a source of electromagnetic noise. The electromagnetic shielding function is demonstrated.

  As described above, in this embodiment, the movable-side front case 4 having a ground potential is formed by a material having electrical conductivity, held so as to cover the camera body 11 and locked to the apparatus-side mounting portion 8. Since the camera shield structure 13 that contacts the camera is provided, one camera has a function of holding the camera body 11 and locking it to the apparatus-side mounting unit 8 and a function of electromagnetically shielding the camera body 11 that can be a source of electromagnetic noise. The shield structure 13 can also be used together, so that the number of parts can be reduced and the cost can be reduced.

  Further, in this embodiment, the camera shield structure 13 and the apparatus side mounting portion 8 include the fitting structure 16 for locking the camera shield structure 13 to the apparatus side mounting portion 8, so that screws and double-sided The camera shield structure 16 can be securely and easily positioned and locked to the apparatus side mounting portion 8 without the need for separate fixing parts such as tape, and the number of parts can be further reduced. Cost reduction can be achieved and assemblability can also be improved.

  Furthermore, in the present embodiment, the camera shield structure 13 has the tongue piece 13e having a spring structure that elastically contacts the movable front case 4 having the ground potential. Can be reliably brought into contact with the movable-side front case 4 so that the casing can be grounded, and the electromagnetic shielding function can be reliably exhibited.

  Furthermore, in the present embodiment, the bottom surface portion 13a of the camera shield structure 13 and the bottom portion of the camera body 11 formed in a U-shaped cross section having a bottom surface portion 13a and a side surface portion 13b covering the bottom and side surfaces of the camera body 11. Therefore, the height position of the camera body 11 held by the camera shield structure 13 can be adjusted by the thickness of the bottom raising component 18. Therefore, compatibility with the case of using the conventional holding-dedicated camera holder 106 as shown in FIG. 5 can be provided, and the camera of the present embodiment can be realized only by providing the movable-side front case with the protrusion 8a. The unit 10 can be applied to a conventional structure product. Further, since the bottom raising component 18 is made of an insulating buffer material, the electrical insulation between the flexible cable 15 disposed at the bottom of the camera body 11 and the sheet shield camera shield structure 13 is ensured. Can be secured.

  In the present embodiment, the apparatus side mounting portion 8 is set to the base (hinge portion 6) side position from the LCD3 position of the movable side housing 1. However, the position is not limited to such a position. You may set to the front end part side position from LCD3 position.

(Appendix 1) A mobile terminal device including an imaging device mounted on a device-side mounting unit,
A portable terminal comprising: an imaging device holding component that is formed of a material having electrical conductivity, holds the imaging device, is locked to the device-side mounting unit, and comes into contact with a device housing having a ground potential. apparatus.

(Additional remark 2) The said imaging device holding component and the said apparatus side mounting part are equipped with the fitting structure for latching this imaging device holding component to this apparatus side mounting part, The portable of Additional remark 1 characterized by the above-mentioned. Terminal device.

(Additional remark 3) The said imaging device holding component has a spring structure which contacts the said apparatus housing | casing elastically, The portable terminal device of Additional remark 1 or 2 characterized by the above-mentioned.

(Additional remark 4) The said imaging device holding component is formed in the cross-sectional U-shape which has the bottom face part and side part which cover the bottom part and side surface of the said imaging device, Any one of Additional remarks 1-3 characterized by the above-mentioned. The portable terminal device described in one.

(Additional remark 5) The portable terminal device of Additional remark 4 provided with the bottom raising part interposed between the said bottom face part of the said imaging device holding component, and the bottom part of the said imaging device.

(Additional remark 6) It is the imaging device unit for portable terminal devices mounted in the apparatus side mounting part of a portable terminal device, Comprising:
An imaging device body including an imaging device IC;
An imaging device holding component that is formed of a material having electrical conductivity, holds the imaging device body, is locked to the device-side mounting portion, and contacts a device housing of a ground potential;
An imaging device unit for a portable terminal device, comprising:

(Additional remark 7) The said imaging device holding component is provided with one of the fitting structures for locking this imaging device holding component to the said apparatus side mounting part, The imaging for portable terminal devices of Additional remark 6 characterized by the above-mentioned Equipment unit.

(Additional remark 8) The said image pick-up device holding component has a spring structure which contacts the said apparatus housing | casing elastically, The image pick-up device unit for portable terminal devices of Additional remark 6 or 7 characterized by the above-mentioned.

(Additional remark 9) The said imaging device holding component is formed in the cross-sectional U-shape which has the bottom face part and side part which cover the bottom part and side surface of the said imaging device main body, Any one of the additional notes 6-8 characterized by the above-mentioned. The imaging device unit for portable terminal devices as described in one.

(Additional remark 10) The image pick-up device unit for portable terminal devices of Additional remark 9 provided with the bottom raising component interposed between the said bottom face part of the said image pick-up device holding component, and the bottom part of the said image pick-up device main body.

  As described above, the portable terminal device and the imaging device unit for the portable terminal device according to the present invention are useful for a mobile phone with an imaging device, and in particular, mount an imaging device with a large number of pixels for which electromagnetic noise countermeasures are essential. Suitable for cases.

It is an external appearance perspective view which shows the camera unit assembly example in the mobile phone with a camera of the Example of this invention. FIG. 2 is an exploded perspective view of FIG. 1. It is sectional drawing of the AA line part of FIG. It is a perspective view which expands and shows the structure of a camera shield structure. It is a schematic vertical side view which shows the example of camera unit assembly in the conventional mobile phone with a camera.

Explanation of symbols

4 Movable front case 8 Device side mounting part 10 Camera unit 11 Camera body 13 Camera shield structure 13a Bottom face part 13b Side face part 13c Hole 13e Spring-shaped tongue piece 16 Fitting structure 18 Bottom-up part

Claims (5)

A mobile terminal device including an imaging device mounted on the device-side mounting unit,
A portable terminal comprising: an imaging device holding component that is formed of a material having electrical conductivity, holds the imaging device, is locked to the device-side mounting unit, and comes into contact with a device housing having a ground potential. apparatus.   The portable terminal device according to claim 1, wherein the imaging device holding component and the device-side mounting portion include a fitting structure for locking the imaging device holding component to the device-side mounting portion.   The portable terminal device according to claim 1, wherein the imaging device holding component has a spring structure that elastically contacts the device housing. The imaging device holding component is formed in a U-shaped cross section having a bottom surface and a side surface covering the bottom and side surfaces of the imaging device,
The mobile terminal device according to claim 1, further comprising a bottom-up component interposed between the bottom surface portion of the imaging device holding component and a bottom portion of the imaging device. An imaging device unit for a mobile terminal device mounted on a device side mounting portion of the mobile terminal device,
An imaging device body including an imaging device IC;
An imaging device holding component that is formed of a material having electrical conductivity, holds the imaging device body, is locked to the device-side mounting portion, and contacts a device housing of a ground potential;
An imaging device unit for a portable terminal device, comprising:

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