JP2010154445A - Portable electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable electronic apparatus which can be reduced in sized and can secure waterproofness without the necessity to secure any special housing space for antenna mounting in a case. <P>SOLUTION: In a cellular phone 1, a first case 2 comprising an operating part 5 and a second case 3 comprising a liquid crystal display device 22 are linked by a hinge mechanism 4 so as to be opened and closed. The cellular phone 1 includes a seal structure by interposing a first seal member between joint surfaces of a first front case 6 and a first back case 7 constituting the first case 2, and a first antenna is embedded in the first seal member. A second seal member is similarly interposed between joint surfaces of a second front case 20 and a second back case 21 constituting the second case 3 and a second antenna constituting a diversity antenna together with the first antenna is embedded in the second seal member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a portable electronic device that employs a diversity reception type communication mode.

  In recent years, mobile phones adopting a diversity reception system have become mainstream. When communicating with a mobile phone, the mobile phone receives various radio waves such as a radio wave directly received from a base station and a radio wave reflected by an obstacle such as a building. When these radio waves interfere with each other, radio wave interference that greatly changes the strength of the radio waves reaching the telephone is caused and communication quality is deteriorated. Such a radio wave strength phenomenon is referred to as “fading”, and a diversity reception system is known as a reception system for improving the fading phenomenon and maintaining communication quality and stability.

  The diversity reception method is a reception method that minimizes the level fluctuation of the received radio wave as much as possible by automatically selecting and receiving the radio wave having the best reception state from a plurality of reception systems. In this case, it is necessary to install the two antennas at a position having little correlation with each other, in other words, at an appropriate place that is spatially separated (space diversity reception), and about two-half of the wavelength of the received radio wave is separated. Desirable. As mobile phones adopting such a diversity reception system, various proposals have been conventionally made as disclosed in, for example, Patent Documents 1 to 4.

  The portable communication terminal disclosed in Patent Document 1 includes first and second terminal bodies that are relatively pivotally connected by a hinge mechanism, and the end of the first terminal body opposite to the hinge mechanism. A first antenna is provided at a portion, and a second antenna that constitutes a diversity antenna with the first antenna is provided in the vicinity of the hinge mechanism.

  A mobile phone described in Patent Document 2 includes an antenna support body that is rotatable about a rotation axis in a main body, and a first antenna that is parallel to the rotation axis is disposed in the main body. The second antenna is arranged in parallel with the first antenna.

  The mobile phone described in Patent Document 3 is a foldable diversity mobile phone provided with a shared whip antenna protruding outside the mobile phone and a reception-only antenna inside the mobile phone on a printed circuit board. An antenna that combines the functions of both the whip antenna and the reception-only antenna is embedded in a foldable hinge portion of the telephone.

  A portable terminal described in Patent Document 4 includes a first housing, a second housing having a display unit, the first housing, and the second housing on substantially the same plane. A portable terminal having a first rotating shaft to be rotated, comprising: a first antenna disposed in the first casing; and a second antenna disposed in the second casing; A stop position where the major axis direction of the first antenna and the major axis direction of the second antenna intersect with each other due to relative rotation between the first casing and the second casing is defined as a reception position.

JP 2004-128971 A JP 2006-121382 A JP 2004-96302 A JP 2007-306347 A

Each of the mobile phones disclosed in the above cited references 1 to 4 has a problem in that it is necessary to secure a storage space for mounting the antenna because the antenna is provided in the casing.
Further, in the cellular phone including the retractable whip antenna described in Patent Document 3, when the waterproof structure is used, it is necessary to use a waterproof structure for the telescopic structure and the antenna housing structure. There was a problem that the structure became complicated.

  The present invention has been made to solve the above-described conventional problems, and the object of the present invention is not to secure a special storage space for mounting the antenna in the housing, and like a whip antenna. An object of the present invention is to provide a portable electronic device that does not need to be extended or contracted.

  In order to achieve the above object, the present invention provides a portable electronic device having a first and a second housing and having a communication function in which the first and second housings are connected so as to overlap each other when not in use. The first sealing member interposed between the joint surfaces of the first front casing and the first rear casing constituting the first casing, and the first sealing member embedded in the first sealing member. Embedded in the second seal member, the second seal member interposed between the joint surface of the first antenna, the second front case and the second rear case constituting the second case And a second antenna that constitutes a diversity antenna together with the first antenna.

  According to the present invention, in the above invention, the portable electronic device is a mobile phone, and one of the first and second antennas is a transmission / reception antenna and the other is a reception antenna.

  Further, according to the present invention, in the above invention, the portable electronic device includes a television receiver compatible with terrestrial digital broadcast reception, and the first and second antennas are both receiving antennas.

  According to the present invention, in the above invention, the portable electronic device is a personal computer, and one of the first and second antennas is a transmission / reception antenna and the other is a reception antenna.

  In the present invention, the first housing and the second housing are connected to each other by a hinge mechanism so as to be foldable.

  According to the present invention, in the above invention, the first housing and the second housing are connected to each other so as to be relatively slidable on the same plane by a slide mechanism.

  In the present invention, the first casing and the second casing are connected to each other so as to be relatively rotatable on the same plane by a connecting shaft.

  Furthermore, in the present invention according to the present invention, each of the first and second antennas is a dipole antenna.

In the present invention, the first seal member interposed between the joint surfaces of the first front case and the first back case hermetically seals the first case to have a waterproof structure. Similarly, the second seal member interposed between the joint surfaces of the second front casing and the second rear casing hermetically seals the second casing to have a waterproof structure. Since the first and second seal members are provided with the first and second antennas constituting the diversity antenna, a special space for accommodating the antennas in the first and second casings. Is not necessary, and it is not necessary to expand and contract like a whip antenna, so it is easy to handle.
In the present invention, the portable electronic device having a communication function can be applied to a mobile phone, a television receiver compatible with terrestrial digital broadcast reception, a waterproof personal computer, and the like.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.
FIG. 1 is a perspective view of an embodiment in which the present invention is applied to a foldable mobile phone, FIG. 2 is a perspective view of the mobile phone not in use, and FIG. 3 is a first housing and a second housing. 4 is a plan view showing the inside of the body, FIG. 4 is a view showing the waterproof structure of the first housing, and (A) is a cross-sectional view taken along the line AA in FIG. 1 in a state before the first housing is sealed. FIG. 2B is a cross-sectional view taken along line AA of FIG. 1 in a state where the first housing is sealed. 5A and 5B are diagrams showing a waterproof structure of the second housing, in which FIG. 5A is a cross-sectional view taken along the line BB of FIG. 1 in a state before the second housing is sealed, and FIG. It is the BB sectional view taken on the line of FIG. 1 in the state which sealed the body.

  1 to 3, the foldable mobile phone 1 includes a first housing 2 and a second housing 3, and both the housings 2 and 3 are connected to the operation surface 2 a and the hinge mechanism 4. By connecting the first casing 2 and the second casing as shown in FIG. 2 when not in use, they are connected so as to be rotatable in an angle range of approximately 180 ° in a direction orthogonal to the display surface 3a. 3 overlap each other so that the operation surface 2a and the display surface 3a are in close contact with each other. As shown in FIG. A so-called foldable telephone is configured in which the operation surface 2a and the display surface 3a face in the same direction by rotating about 180 ° around.

  The first casing 2 includes a first front casing 6 having various operation units 5 on the operation surface 2a, and a first rear casing 7 that houses a power supply 8 printed circuit board 9 and a microphone 13. Yes. The printed circuit board 9 is mounted with a power feeding unit 10, a radio unit 11 having a diversity receiving circuit, receiving a signal, and demodulating, a control unit 12, and the like. The power feeding unit 10 is provided at the upper left corner of the printed circuit board 9 in FIG.

  In FIG. 4, the first front housing 6 and the first rear housing 7 of the first housing 2 are integrally coupled via a first seal member 14 to form an airtight waterproof structure. Yes. For this reason, seal grooves 15 and 16 for accommodating the first seal member 14 are formed in the joint surfaces 6a and 7a of the first front housing 6 and the first rear housing 7 over the entire circumference. In addition, a first antenna 17 functioning as a transmission / reception antenna requiring a wide band characteristic is embedded in the first seal member 14 as shown in FIG. As the first antenna 17, a V-shaped dipole antenna composed of first and second antenna elements 17A and 17B is used, and one end of the first antenna element 17A is connected to the power feeding unit 10, and the second antenna element 17A One end of the antenna element 17B is connected to the first front case 6 as a ground side. As the first seal member 14, it is not necessary to use a member having a large diameter for embedding the first antenna 17, and a member having an outer diameter equivalent to that of a conventional seal member is used.

  1 to 3 and 5, the second casing 3 is similarly composed of a second front casing 20 and a second rear casing 21, and a liquid crystal display device 22 and a speaker 23 are mounted therein. A printed circuit board 24 is accommodated. The display surface 22 a of the liquid crystal display device 22 is exposed on the display surface 3 a of the second front housing 20. The printed circuit board 24 is electrically connected to the printed circuit board 9 of the first housing 2 by a flexible printed circuit board 25. The flexible printed circuit board 25 is guided from the second back housing 21 to the first back housing 7 through the inside of the hinge mechanism 4.

  In FIG. 5, the second front casing 20 and the second rear casing 21 are integrally coupled via a second seal member 28 to form an airtight waterproof structure. For this reason, seal grooves 29 and 30 for accommodating the second seal member 28 are respectively formed on the joint surfaces 20a and 21a of the second front case 20 and the second rear case 21 over the entire circumference.

  A second antenna 31 made up of a receiving antenna is embedded in the second seal member 28 as shown in FIG. The second antenna 31 constitutes a diversity antenna together with the first antenna 17, and includes first and second antenna elements 31A and 31B each having a length of ¼ wavelength of a received signal band. A V-shaped dipole antenna is used, one end of the first antenna element 31A is connected to the power feeding part 32 provided on the printed circuit board 24, and one end of the second antenna element 31B is used as the ground side for the second back surface. It is connected to the housing 21. The power supply unit 32 is provided at the lower right corner of the printed circuit board 24 in FIG. 3 so as not to overlap the power supply unit 10 of the first housing 2 when not in use. The received signal received by the second antenna 31 or the first antenna 7 and input to the radio unit 11 is demodulated, signal-processed by the control unit 12, and extracted as information. The second antenna 31 has a narrow band characteristic compared to the first antenna 17 for transmission and reception for reception. The second seal member 28 does not need to have a large diameter for embedding the second antenna 31, and, like the first seal member 14, has an outer diameter equivalent to that of the conventional seal member. What you have is used.

  In the mobile phone 1 having such a structure, the first seal member 14 that seals between the joint surfaces 6 a and 7 a of the first front case 6 and the first back case 7 constituting the first case 2. In the second sealing member 28, the first antenna 17 is embedded in the second sealing member 28 that seals between the joint surfaces 20a, 21a of the second front casing 20 and the second rear casing 21 constituting the second casing 3. In addition, since the second antenna 31 that constitutes the diversity antenna together with the first antenna 17 is embedded, it is possible to reduce the level fluctuation of the received radio wave by automatically selecting and receiving the radio wave having a good reception state The reception quality of the mobile phone 1 can be improved, and since it is not necessary to incorporate an antenna in the first housing 2 and the second housing 3, the structure in these housings can be simplified, and thus portable. Realization of miniaturization of the telephone 1 itself Rukoto is possible.

  Moreover, since the V-shaped dipole antenna is used as the first and second antennas 17 and 31, it is not necessary to expand and contract like a whip antenna, and it is easy to handle and can secure a required length. .

  Further, since the first and second casings 2 and 3 are sealed by the first and second sealing members 14 and 28, respectively, the waterproofness of the first and second casings 2 and 3 is improved. be able to.

  Furthermore, when the second casing 3 is rotated by approximately 180 ° relative to the first casing 2 and opened during use, the distance between the first antenna 17 and the second antenna 31 is increased. Since it can take long enough, a favorable diversity effect can be acquired.

FIG. 6 is an external perspective view of a mobile phone according to another embodiment of the present invention when used, FIG. 7 is an external perspective view when the mobile phone is not used, and FIG. 8 is a first housing and a second housing. It is a top view which shows the inside of a body. The same components and portions as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted as appropriate.
In these drawings, in the present embodiment, the first casing 41 and the second casing 42 are slidable in the longitudinal direction (arrow 44 direction) relatively on the same plane by a slide mechanism (not shown). The example applied to the portable telephone 40 connected to FIG.

  The first housing 41 has a plurality of operation units 5 on the operation surface 41a, and a second housing 42 is slidable in the direction of the arrow 44 along the operation surface 41a.

  The second housing 42 is slidably disposed on the operation surface 41a of the first housing 41 with the display surface 42a facing upward by a slide mechanism. When the second housing 42 is not in use, the first housing 42 is disposed as shown in FIG. 6 is configured to be pulled out to the front end side of the first casing 2 when used, as shown in FIG. The sliding mechanism of the first and second casings 41 and 42 is configured by a conventionally known groove and a slider that slides along the groove.

  That is, the mobile phone 40 in the present embodiment is the first embodiment 41 shown in the above-described embodiment that the first housing 41 and the second housing 42 are slidably connected on the same plane by the slide mechanism. The other configurations are substantially the same except for the cellular phone 1 in which the first casing 2 and the second casing 3 are foldably connected by the hinge mechanism 4.

  For this reason, the first housing 41 includes a first front housing 45 and a first rear housing 46, and the first antenna 17 ( A first seal member 14 embedded with FIGS. 3 and 4) is interposed. Similarly, the second casing 42 includes a second front casing 47 and a second rear casing 48, and a second antenna that forms a diversity antenna together with the first antenna 17 on the joint surface. A second seal member 28 embedded with 31 (FIGS. 3 and 5) is interposed.

  Such a slide-type mobile phone 40 is also hardly affected by the slide mechanism, and stable communication quality can be obtained in the same manner as the foldable mobile phone 1 described above.

  FIG. 9 is an external perspective view of a mobile phone showing still another embodiment of the present invention when not in use. This embodiment is applied to a mobile phone 50 in which a first casing 51 and a second casing 52 are connected to each other by a connecting shaft 53 so as to be relatively rotatable on the same plane as indicated by an arrow 54. An example is shown.

  Similar to the second casing 42 of the mobile phone 40 shown in FIGS. 6 to 8, the second casing 52 is connected to the operation surface of the first casing 51 with the display surface 52 a facing upward. 53 is arranged to be rotatable around its axis via 53, overlaps with the first casing 51 when not in use, and moves to a position rotated 180 ° from the unused state when in use. It is comprised so that it may jump out to the front-end side of the housing | casing 51. FIG. The connecting shaft 53 connects the center of the upper end portions of the first casing 51 and the second casing 52 so as to be rotatable.

  The structures of the first casing 51 and the second casing 52 are substantially the same as those of the first casings 2 and 41 and the second casings 3 and 42 described above. Therefore, the first seal in which the first antenna 17 is embedded in the joint surface between the first front case 55 and the first rear case 56 constituting the first case 51 as shown in FIG. Similarly, the member 14 is interposed between the first antenna 17 and the joint surface of the second front casing 57 and the second rear casing 58 that constitute the second casing 52 together with the first antenna 17 as shown in FIG. A second seal member 28 in which a second antenna 31 constituting a diversity antenna is embedded is interposed.

  It will be apparent that the mobile phone 50 having such a structure can provide the same effects as those of the mobile phones 1 and 40 described above.

  In the above-described embodiment, the first antenna 17 for transmission / reception is embedded in the first seal member 14 that seals the first casing 2, 41, 51, and the second casing 2 is embedded. , 42 and 52, the second antenna 31 for reception is embedded in the second seal member 28. However, the present invention is not limited to this, and the first seal member 14 is used for reception. The second antenna 31 may be embedded, and the first antenna 17 for transmission / reception may be embedded in the second seal member 28.

  The present invention has been described with respect to the example in which the portable electronic device having the communication function is applied to the mobile phones 1, 40, and 50. However, the present invention is not limited to this and is applicable to electronic devices other than the phone can do. For example, the present invention can also be applied to a waterproof television receiver compatible with terrestrial digital broadcast reception and a waterproof personal computer. When applied to a television receiver that receives terrestrial digital broadcasting, a transmitting antenna is not required, and therefore both the first and second antennas 17 and 31 can be used as receiving antennas. In particular, in the present invention, the first and second antennas 17 and 31 made of V-shaped dipole antennas are embedded in the first and second seal members 14 and 28, so that the terrestrial digital broadcasting is performed. In particular, when receiving a signal in a frequency band having a relatively long wavelength, it is effective because good reception characteristics can be obtained.

It is a perspective view at the time of use which shows one embodiment which applied the present invention to a foldable cellular phone. It is a perspective view when a mobile phone is not used. It is a top view which shows the inside of a 1st housing | casing and a 2nd housing | casing. 1A and 1B are views showing a waterproof structure of a first housing, in which FIG. 1A is a cross-sectional view taken along line AA of FIG. 1 in a state before sealing the first housing, and FIG. It is the sectional view on the AA line of FIG. It is a figure which shows the waterproof structure of a 2nd housing | casing, (A) is the BB sectional drawing of the state before sealing a 2nd housing | casing, (B) seals a 2nd housing | casing. It is the BB sectional drawing of FIG. 1 in the state which carried out. It is an external appearance perspective view at the time of use of the mobile telephone which shows other embodiment of this invention. It is an external appearance perspective view at the time of non-use of a mobile phone. It is a top view which shows the inside of a 1st housing | casing and a 2nd housing | casing. FIG. 10 is an external perspective view of a mobile phone showing still another embodiment of the present invention when not in use.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 2 ... 1st housing | casing, 2a ... Operation surface, 3 ... 2nd housing | casing, 3a ... Display surface, 4 ... Hinge mechanism, 5 ... Operation part, 6 ... 1st front surface housing, 7 DESCRIPTION OF SYMBOLS 1st back housing | casing, 14 ... 1st sealing member, 17 ... 1st antenna, 20 ... 2nd front housing | casing, 21 ... 2nd back housing | casing, 22 ... Liquid crystal display device, 28 ... 2nd seal | sticker Member 31 ... Second antenna 40 ... Mobile phone 41 ... First housing 42 ... Second housing 50 ... Mobile phone 51 ... First housing 52 ... Second housing 53 ... A connecting shaft.

Claims (8)

In a portable electronic device having a first and second housing and having a communication function in which the first and second housings are connected so as to overlap each other when not in use.
A first seal member interposed between the joint surfaces of the first front housing and the first rear housing constituting the first housing;
A first antenna embedded in the first seal member;
A second seal member interposed between the joint surfaces of the second front housing and the second rear housing constituting the second housing;
A portable electronic device comprising: a second antenna embedded in the second seal member and constituting a diversity antenna together with the first antenna. The portable electronic device according to claim 1.
A portable electronic device in which the portable electronic device is a mobile phone, and one of the first and second antennas is a transmission / reception antenna and the other is a reception antenna. The portable electronic device according to claim 1.
A portable electronic device in which the portable electronic device includes a television receiver compatible with terrestrial digital broadcast reception, and both the first and second antennas are receiving antennas. The portable electronic device according to claim 1.
A portable electronic device comprising a personal computer, wherein one of the first and second antennas is a transmission / reception antenna and the other is a reception antenna. The portable electronic device according to claim 1.
A portable electronic device in which a first housing and a second housing are foldably connected by a hinge mechanism. The portable electronic device according to claim 1.
A portable electronic device in which a first housing and a second housing are connected to each other by a slide mechanism so as to be relatively slidable on the same plane. The portable electronic device according to claim 1.
A portable electronic device in which a first housing and a second housing are connected to each other so as to be relatively rotatable on the same plane by a connecting shaft. The portable electronic device according to claim 1.
A portable electronic device in which each of the first and second antennas is a dipole antenna.

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