JP2005026881A - Portable terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device which prevents erroneous operation or faults of electric/electronic components and is highly reliable in the portable terminal provided with an imaging part for photographing a subject and a mirror for photographing a photographer himself or herself. <P>SOLUTION: The portable terminal comprises a casing; an imaging part 11 which is provided within the casing and exposed outward from a surface 19 of the casing; a circuit board 25 electrically connected to the imaging part 11; and the mirror 21 composed by conductive material which is arranged on the surface 19 of the casing, adjacent to the imaging part 11. The mirror 21 is electrically connected to a grounding trace of the circuit board 25. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable terminal device such as a mobile phone, a PDA (Personal Digital Assistants), etc., equipped with an imaging unit for photographing a subject and a self-shooting mirror.
[0002]
[Prior art]
As a conventional portable terminal device, there is one in which an imaging unit exposed outward from the surface of the casing is provided inside the casing, and a mirror is provided on the surface of the casing adjacent to the imaging unit (for example, (See Patent Document 1). This mirror is for visually recognizing the photographing state of the photographing range and composition in the image pickup unit when the photographer photographs itself, and is adhered to the surface of the housing with an adhesive tape or the like. This mirror is made of a metal material or a resin member having a metal film formed by plating the surface of the resin member, and has conductivity.
Note that the above-described imaging unit is a so-called electronic camera including an imaging element such as a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) image sensor.
[0003]
[Non-Patent Document 1]
[Search on June 27, 2003], Internet <URL: http: // www. kyocera. co. jp / frame / product / telecom / keitai / tuka / tk31 / camera. html>
[0004]
[Problems to be solved by the invention]
However, in the above mobile terminal device, when static electricity is introduced from the outside (human body, other electronic devices, etc.), noise is generated in the signal lines of the electronic components in the mobile terminal device including the imaging unit. There is a risk of causing malfunctions or destroying parts such as an imaging unit.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a highly reliable portable terminal device by preventing malfunction and failure of electric / electronic components.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention proposes the following means.
The invention according to claim 1 is a housing, an imaging unit provided inside the housing and exposed outward from the surface of the housing, a circuit board electrically connected to the imaging unit, A portable terminal device comprising: a mirror made of a conductive material disposed adjacent to the imaging unit on the surface of the housing; and electrically connecting the mirror to a ground pattern of the circuit board. Features.
[0006]
According to a second aspect of the present invention, in the portable terminal device according to the first aspect, a flash unit is arranged adjacent to the mirror.
[0007]
The invention according to claim 3 is the portable terminal device according to claim 1 or 2, wherein two or more electrical contacts between the mirror and the ground pattern are provided.
[0008]
The invention according to claim 4 is the portable terminal device according to claim 1, further comprising a cover member made of a conductive material provided on the surface of the casing so as to surround the periphery of the imaging window of the imaging unit, The cover member is integrally provided with the mirror, and the mirror is electrically connected to the ground pattern of the circuit board through the cover member.
[0009]
According to a fifth aspect of the present invention, in the portable terminal device according to the second aspect, the casing surface is integrally provided so as to surround the periphery of the imaging window of the imaging unit and the flashing window of the flash unit. The cover member is made of a conductive material, and the mirror is integrally provided on the cover member, and the mirror is electrically connected to the ground pattern of the circuit board via the cover member. It is characterized by that.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
1 to 4 show an embodiment according to the present invention. The embodiment described here is a case where the present invention is applied to a mobile phone. As shown in FIGS. 1 and 2, the cellular phone (portable terminal device) 1 according to this embodiment is configured such that a first casing 2 and a second casing 3 are foldably connected to each other by a hinge portion 4. It will be. Various operation keys 5 such as a call key and an end key and a microphone unit 6 are provided inside the first housing 2, and these are one end surface 7 in the thickness direction of the first housing 2. Exposed to the side.
[0011]
A display unit 8, a speaker unit 9, an imaging unit 11, a flash unit 13, and a light emitting unit 15 are provided inside the second casing 3, and the display surface 8a and the speaker unit 9 of the display unit 8 2 is exposed on one end face 17 side in the thickness direction of the casing 3.
The speaker unit 9, together with the microphone unit 6, performs a wireless call through the antenna 18 with the first and second housings 2 and 3 opened to each other. The one end surfaces 7 and 17 of the housings 2 and 3 face each other in a state where the two housings 2 and 3 are folded, and the operation key 5, the microphone unit 6, the display unit 8, and the speaker unit 9 These are covered with the casings 2 and 3.
[0012]
The imaging unit 11, the flash unit 13, and the light emitting unit 15 are exposed on the other end surface 19 side of the second housing 3 located on the opposite side of the one end surface 17. A mirror 21 is disposed adjacent to the flash unit 13. The mirror 21 is used for the photographer to visually recognize the photographing state such as the photographing range and composition when the photographing unit 11 photographs the photographer himself as a subject.
The imaging unit 11 includes a so-called CMOS imaging device that receives light from a subject and outputs an electrical signal proportional to the brightness of the light to capture the subject. As shown in FIG. 3, the image sensor is electrically connected to a thin circuit board 25 provided inside the second housing 3 via a flexible printed wiring board 27. The video imaged by the imaging unit 11 can be viewed on the display unit 8 described above.
[0013]
The flash unit 13 includes a flash element 29 fixed to the circuit board 25, and obtains a light amount necessary for photographing by a flash emitted from the flash element 29. In other words, the flash unit 13 allows the image pickup unit 11 to take a picture even in a dark place, by the flash element 29 emitting a flash toward the subject in synchronism with the timing at which the image pickup unit 11 acquires the subject image. Is.
[0014]
The light emitting unit 15 includes a light emitting diode 31 fixed to the circuit board 25, and notifies the user of the mobile phone 1 of various types of information by turning on and blinking the light emitting diode 31. That is, for example, when shooting is performed by the imaging unit 11, the shooting timing can be notified to the subject by turning on and blinking the light emitting diode 31.
[0015]
The 2nd housing | casing 3 is comprised so that the imaging part 11, the flash part 13, and the light emission part 15 may be exposed outside. That is, the second housing 3 includes a shallow rear case 33 that constitutes the other end surface 19 side. The rear case 33 penetrates in the thickness direction, and includes a rear case body 35 having three through holes 35a to 35c that expose the imaging unit 11, the flash unit 13, and the light emitting unit 15 to the outside. And a thin plate-like rear plate 37 having an opening 37a for exposing the three through holes 35a to 35c to the outside.
The rear case main body 35 and the rear plate 37 are configured so as to be overlapped and coupled in the thickness direction. That is, the rear case body 35 is formed with a recess 36 that opens toward the other end surface 19 of the rear case 33, and the rear plate 37 is fitted into the recess 36 and integrally fixed by adhesion or the like. Yes.
The rear plate 37 is configured such that a surface located on the opposite side to the surface that contacts the bottom surface 36 a of the recess 36 of the rear case body 35 is the other end surface 19 of the second housing 3.
[0016]
A cover member 41 having an outer peripheral shape that substantially matches the shape of the opening 37 a is provided in the opening 37 a of the rear plate 37. The cover member 41 is fixed by sandwiching a flange portion of the cover member 41 between the rear case body 35 and the rear plate 37 in a state where the rear case body 35 and the rear plate 37 are coupled to each other. It is like that.
The cover member 41 is formed by plating the surface of the resin member to form a metal film, and has conductivity. The cover member 41 is integrally formed with the mirror 21 described above. The mirror 21 is configured so that a user of the mobile phone can visually recognize a shooting state such as a shooting range and a composition when the imaging unit 11 takes a picture of himself / herself as a subject.
The cover member 41 is formed with three through holes 41a to 41c penetrating in the thickness direction. The through holes 41a to 41c are formed in the rear case body 35, respectively. In addition, the imaging unit 11, the flash element 29, and the light emitting element 31 are configured to be exposed to the outside.
[0017]
Between the rear case main body 35 and the cover member 41, window members 43 to 45 for closing the through holes 41a to 41c of the cover member 41 without gaps are provided. These window members 43 to 45 form a photographing window of the imaging unit 11, a flash window of the flash element 29, and a light emission window of the light emitting element 31, respectively, and are formed of a light transmissive material such as glass or acrylic. Has been. The window members 44 and 45 that close the through holes 41a and 41b are integrally formed.
The window members 43 to 45 are placed on the bottom surface 36a of the rear case body 35 so as to close the through holes 35a to 35c of the rear case body 35, respectively. Therefore, these window members 43 to 45 prevent dust from entering the inside of the second housing 3 and protect the imaging unit 11, the flash element 29, and the light emitting element 31.
[0018]
A ground pattern (not shown) is formed on the circuit board 25. Two connection terminals 47, which are elastically deformable adjacent to the flash element 29 and the light emitting element 31 so as to be electrically connected to the ground pattern. 48 is fixed. The connection terminals 47 and 48 are configured to contact the cover member 41 through insertion holes 35d and 35e formed in the rear case body 35, respectively.
That is, the cover member 41 is formed with two protrusions that protrude toward the rear case body 35 side. These protrusions are inserted into the insertion holes 35 d of the rear case body 35 in a state where the cover member 41 is placed on the bottom surface 36 a of the rear case body 35, and come into contact with the connection terminals 47 and 48. In addition, since these connection terminals 47 and 48 can be elastically deformed, they can be held in contact with the projections by the elastic force when pressed by the projections of the cover member 41.
[0019]
In the state where the rear case body 35 and the rear plate 37 are coupled to each other with the cover member 41 interposed therebetween and the circuit board 25 is disposed close to the rear case body 35, as shown in FIG. A protrusion 49 of 41 is inserted into the through hole 35 d of the rear case main body 35, and a tip portion thereof abuts on the connection terminal 47. Although not shown, the other protrusion 49 of the cover member 41 is inserted into the through hole 35 e of the rear case main body 35, and its tip end abuts on the connection terminal 48.
In this state, the imaging unit 11 is exposed to the outside of the second housing 3 from the other end surface 19 through the through hole 35 a of the rear case body 35 and the through hole 41 a of the cover member 41. Further, the flash element 29 and the light emitting element 31 are also provided outside the second casing 3 through the through holes 35 b and 35 c of the rear case body 35 and the through holes 41 b and 41 c of the cover member 41 in the same manner as the imaging unit 11. It is exposed towards. In this state, the imaging unit 11, the flash element 29, and the light emitting element 31 are arranged in proximity to the cover member 41.
[0020]
As described above, according to the cellular phone 1, even if static electricity is led from the outside by electrically connecting the cover member 41 made of a conductive material to the ground pattern of the circuit board 25, the static electricity is It is possible to escape to the ground pattern of the substrate 25. For this reason, it is possible to prevent noise from being generated in the signal lines of the electronic parts including the image pickup unit 11, and the noise causes electric components such as the display unit 8 and the speaker unit 9 and various electronic components mounted on the circuit board 25 to be erroneous. Operation and failure can be prevented, and a highly reliable mobile phone 1 can be provided.
In addition, by providing two electrical contacts between the cover member 41 and the ground pattern of the circuit board 25, the cover member 41 is generated based on the operating frequencies of various electrical and electronic components mounted on the mobile phone 1. It is possible to prevent receiving / transmitting electromagnetic waves. That is, it is possible to prevent the cover member 41 from having an antenna-like characteristic, and to prevent malfunctions and failures of various electric parts and electronic parts based on the electromagnetic waves. In particular, the radio wave to be received by the antenna 18 is absorbed by the cover member 41, or the above-described electromagnetic wave interferes with the radio wave transmitted from the antenna 18, leading to a decrease in the output of the antenna 18 and a deterioration in reception sensitivity. Can be prevented.
[0021]
Further, by forming the mirror 21 integrally with the cover member 41, the number of parts constituting the mobile phone 1 can be reduced, and the mobile phone 1 can be easily manufactured, and the manufacturing cost of the mobile phone 1 can be reduced. Can be achieved.
Furthermore, since the imaging unit 11, the mirror 21, the flash unit 13, and the light emitting unit 15 can be arranged in one, the mobile phone 1 having a good appearance design can be provided.
[0022]
In the above embodiment, the cover member 41 is formed by plating the surface of the resin member to form a metal film. However, the present invention is not limited to this, and the cover member 41 has at least conductivity and a mirror. What can form 21 may be used. Therefore, the cover member 41 may be made of a metal material, for example.
In addition, although the imaging element of the imaging unit 11 is a CMOS, the present invention is not limited to this, and light from a subject is received, and the image is converted into an electrical signal to be displayed on the display unit 8 or the mobile phone 1. What is necessary is just to output to the memory | storage device provided in the inside. Therefore, the image sensor may be a CCD image sensor, for example.
[0023]
Furthermore, although the rear case 33 constituting the second housing 3 is configured by combining the rear case body 35 and the rear plate 37, the present invention is not limited to this, and at least the second housing 3 is provided. What is necessary is just to provide the opening part which penetrates outward from the inside of this, and is obstruct | occluded by the cover member 41. FIG. Therefore, the rear case 33 may be formed integrally with the rear case main body 35 and the rear plate 37.
Further, the cover member 41 and the ground pattern of the circuit board 25 are electrically connected by the two connection terminals 47 and 48. However, the present invention is not limited to this, and the cover member 41 and the ground pattern of the circuit board 25 are electrically connected by three or more connection terminals. It may be connected.
[0024]
Furthermore, the mobile phone 1 is not limited to the mobile phone 1 in which the two housings 2 and 3 are connected to each other so as to be foldable with each other. Any portable terminal device may be used. Therefore, for example, the mobile terminal device may be configured by connecting two casings that can be overlapped in the thickness direction so as to be rotatable around an axis line along the thickness direction.
In addition, the mobile terminal device is not limited to having two housings, and may be configured by one housing having the structure of the present embodiment, for example.
[0025]
As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included.
[0026]
【The invention's effect】
As described above, according to the present invention, by connecting a mirror made of a conductive material to a ground pattern of a circuit board, charging of the mirror is suppressed, and various electrical components due to noise generated based on the charging of the mirror In addition, since malfunction and failure of electronic components can be prevented, a highly reliable portable terminal device can be provided.
[Brief description of the drawings]
FIG. 1 is a plan view showing a state where first and second casings constituting a mobile terminal device according to an embodiment of the present invention are opened from each other;
2 is a bottom view showing a state in which first and second casings constituting the mobile terminal device of FIG. 1 are opened to each other; FIG.
3 is an exploded perspective view showing a rear case constituting a second casing and a circuit board disposed inside the second casing in the mobile terminal device of FIG. 1; FIG.
4 is an enlarged cross-sectional view of a main part showing a state in which a cover member is fixed to a second housing in the mobile terminal device of FIG. 1;
[Explanation of symbols]
1 Mobile phone (mobile terminal device)
3 Second housing 11 Imaging unit 13 Flash unit 19 Other end surface (front surface)
21 Mirror 25 Circuit board 37a Opening 41 Cover member 41a Through hole

Claims (5)

A housing, an imaging unit provided inside the housing and exposed outward from the surface of the housing; a circuit board electrically connected to the imaging unit; and the imaging on the surface of the housing A mirror made of a conductive material arranged adjacent to the part,
A portable terminal device, wherein the mirror is electrically connected to a ground pattern of the circuit board. The mobile terminal device according to claim 1, wherein a flash unit is disposed adjacent to the mirror. The portable terminal device according to claim 1, wherein two or more electrical contacts between the mirror and the ground pattern are provided. A cover member made of a conductive material provided on the surface of the housing so as to surround the periphery of the imaging window of the imaging unit; the mirror is integrally formed on the cover member; and the mirror is the cover member The mobile terminal device according to claim 1, wherein the mobile terminal device is electrically connected to a ground pattern of the circuit board via a pin. The housing surface has a cover member made of a conductive material integrally provided so as to surround the periphery of the imaging window of the imaging unit and the flashing window of the flash unit, and the mirror is attached to the cover member The portable terminal device according to claim 2, wherein the portable terminal device is integrally formed, and the mirror is electrically connected to a ground pattern of the circuit board via the cover member.

Images