JP2009060426A - Portable terminal equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a cellular phone by reducing the installation area required for speaker units when providing a plurality of speaker units in the cellular phone. <P>SOLUTION: The bottom surface parts of speaker units 11 and 12 are connected facing each other so that the sound emitting directions of the first speaker unit 11 and the second speaker unit 12 are turned to opposite directions. Then, the speaker units 11 and 12 are provided in the speaker storage part 8 of a case body 1 so that the sound emitting directions of the respective speaker units 11 and 12 are turned to the directions along the thickness direction of the cellular phone. Thus, two speaker units 11 and 12 are provided in the installation area of one speaker unit, the installation area of the respective speaker units 11 and 12 is reduced, and the cellular phone is miniaturized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is suitable for mobile terminals such as mobile phones, PHS phones (PHS: Personal Handyphone System), PDA devices (PDA: Personal Digital Assistant), portable game machines, and notebook personal computer devices. In particular, the present invention relates to a portable terminal device that can be provided with a plurality of speaker devices in a small installation space and is miniaturized.

  Japanese Laid-Open Patent Publication No. 2003-78601 (Patent Document 1) discloses a portable terminal capable of satisfactorily listening to stereo sound regardless of the orientation of the display screen while suppressing an increase in the number of speakers. ing. This portable terminal is a so-called foldable portable terminal in which an upper case and a lower case are connected by a hinge portion, and a rectangular display screen is provided on the upper case. A first speaker is provided in the upper right region of the display screen provided in the upper case, and a second speaker is provided in the lower left region of the display screen.

  The first speaker and the second speaker form a speaker for stereo sound reproduction. When stereo sound is reproduced when the portable terminal is used in a vertical orientation, the right channel sound is controlled to be output from the first speaker. The sound for the left channel is output from the second speaker. Also, when stereo audio is played back when the mobile terminal is used in a landscape orientation, the left channel sound is output from the first speaker, and the right channel sound is output from the second speaker. Yes.

JP 2003-78601 A (page 3 to page 5, FIG. 4)

  However, in the case of the portable terminal disclosed in Patent Document 1 described above, the first speaker and the second speaker are provided in the upper and lower regions of the display screen provided in the upper case, respectively. In other words, the speakers are two-dimensionally arranged on a two-dimensional plane called the upper case. For this reason, there is a problem that the upper case inevitably increases in size by the space for installing each speaker, and the portable terminal increases in size.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a portable terminal device in which a plurality of speaker devices can be provided in a small installation space and the size of the device can be reduced. .

The mobile terminal device according to the present invention is
A first speaker device for emitting sound;
By providing the bottom surface portion opposite to the bottom surface portion on the side opposite to the sound emitting portion of the first speaker device, the sound is emitted in a direction opposite to the sound emitting direction of the first speaker device. A second speaker device provided to perform sound;
Of the first and second speaker devices, an on / off control means for on / off controlling a speaker device used for outputting sound according to a use condition of the mobile terminal device;
Audio output control means for controlling the output of predetermined sound via the first speaker device and / or the second speaker device that is on-controlled by the on-off control means;
The first speaker device and the second speaker device are in a state where the bottom surface portions face each other so that the sound emission directions are opposite to each other, and the sound emission directions are the mobile phones. By providing the terminal device in a direction along the thickness direction of the terminal device, the above-described problems are solved.

  In such a speaker device according to the present invention, the bottom surface portions of the speaker devices are opposed to each other so that the sound emission directions of the first speaker device and the second speaker device are opposite to each other. By providing the two speaker devices, two speaker devices can be provided in the installation space of one speaker device. For this reason, a plurality of speaker devices can be provided in a small installation space, and the size of the device can be reduced.

  In the portable terminal device according to the present invention, a plurality of speaker devices can be provided in a small installation space, and the size of the device can be reduced.

  The mobile terminal device according to the present invention can be applied to a mobile phone.

[Appearance structure of mobile phone]
First, FIG. 1A is a front view of a mobile phone according to an embodiment to which the present invention is applied, and FIG. 1B is a cross-sectional view showing a cut surface in a state where the mobile phone is cut along the longitudinal direction. ). As an example, this mobile phone is a so-called straight type (= stick type) mobile phone that is downsized and thinned with a total length × width × thickness of 103 mm × 46.5 mm × 7.8 mm. .

  The front portion 1a of the housing 1 is provided with a display portion 2 and an operation portion 3 in order from the top along the longitudinal direction, and between the bottom surface portion 1b of the housing 1 and the operation portion 3, transmission is performed. A microphone unit 4 is provided. Further, between the upper surface portion 1c of the housing 1 and the upper end portion 2a of the display unit 2, the first camera device 5, the speaker device 6, and the first device are sequentially arranged from the left along the short direction of the housing 1. Two camera devices 7 are provided.

  The first camera device 5 is, for example, a camera device (so-called so-called camera device) for imaging a user who uses a mobile phone when making a videophone call to and from the other party's mobile phone. Camera device for selfies). Further, the second camera device 7 is a camera device mainly for imaging a desired subject.

  As shown in FIG. 1B, the speaker device 6 has an overall shape in which the bottom surface portions (surface portions opposite to the sound output portion that emits sound) of the first speaker device 11 and the second speaker device 12 are connected to each other. have. As an example, the first speaker device 11 and the second speaker device 12 are 8Ω dynamic speaker devices each having a height of 3.9 mm.

  Between the upper surface portion 1c of the housing 1 and the upper end portion 2a of the display unit 2, as shown by a dotted line in FIG. In this speaker housing portion 8, the sound output portion that emits sound of the first speaker device 11 is directed to the front portion 1 a side (= display surface side of the display portion 2) of the housing 1, and the second The first speaker device 11 and the second speaker device 12 that are connected to each other are stored so that the sound output unit that emits sound from the speaker device 12 faces the back surface portion 1d of the housing 1. Yes.

  Of the first speaker device 11 and the second speaker device 12 housed in the speaker housing portion 8, the second speaker device 12 is, for example, music, sound of moving images, radio sound, television sound, outgoing / incoming calls. This is a speaker device dedicated to external output for obtaining sound output such as sound.

  On the other hand, the first speaker device 11 housed in the speaker housing portion 8 so that the sound output portion that emits sound faces the front portion 1a side of the housing 1 obtains the sound output of the music and the like. This speaker device serves as both the speaker device and the speaker device for obtaining the received voice during a voice call and a videophone call.

  That is, when obtaining an audio output of music or the like, both the first and second speaker devices 11 and 12 are output-controlled, and an audio output of the music and the like is obtained via the speaker devices 11 and 12. It has become. When receiving a received voice, only the first speaker device 11 is output-controlled, and an acoustic output of the received voice is obtained only through the first speaker device 11.

When the first speaker device 11 is used as a speaker device for external output, the control unit of the cellular phone uses the first speaker to output an audio signal amplified with the same gain as the second speaker device 12. When the first speaker device 11 is supplied to the device 11 and used as a speaker device that obtains a received voice during a call, the received voice amplified by a gain that makes the received voice a sound volume suitable for receiving the first voice is used. By performing volume control to be supplied to the speaker device 11, the first speaker device 11 is used as an external output speaker device and a received voice speaker device.

[Detailed configuration of speaker device]
FIG. 2 is a perspective view of the speaker device 6. As can be seen from FIG. 2, the speaker device 6 has an overall shape in which the bottom portions of the first speaker device 11 and the second speaker device 12 are connected to each other through an adhesive member 20 such as a double-sided tape. Have.

  Each of the speaker devices 11 and 12 is formed by embedding a speaker function unit 23 having a substantially circular sound output unit 22 for emitting sound in a speaker frame unit 21. The speaker frame unit 21 has a substantially rectangular overall shape that is slightly larger than the diameter of the sound output unit 22 of the speaker function unit 23, and supports the embedded speaker function unit 23. The speaker frame portion 21 has a pair of cutout portions 25 provided by cutting off both end portions of one side surface portion 24 from positions close to the outer peripheral portion of the sound output portion 22 having a substantially circular shape. is doing. Each notch 25 has an audio signal input terminal 26 for supplying an audio signal to the first speaker device 11 on a surface portion parallel to the one side surface 24 in each notch 25. Each is provided.

That is, by providing the speaker function unit 23 having the substantially circular sound output unit 22 in the substantially rectangular speaker frame unit 21, the sound output of each end portion 25 of the speaker frame unit 21 and the speaker function unit 23 is achieved. An excess portion is formed between the outer peripheral portion of the portion 22. For this reason, a pair of cutout portions 25 are formed by cutting off both end portions of one side surface portion 24 of the speaker frame portion 21 corresponding to the surplus portion from positions close to the outer peripheral portion of the sound output portion 22, Each notch 25 is provided with an audio signal input terminal 26. As a result, after securing a portion (= the portion of the notch 25) where each audio input terminal 26 is provided, the speaker function unit 23 including the sound output unit 22 having the size of the speaker frame 21 is filled with the speaker. It can be provided in the frame portion 21.

[Speaker function]
FIG. 3 shows a front view (seen from the side of the surface portion on which the sound output unit 22 is provided) of each of the speaker devices 11 and 12. In FIG. 3, a dotted line is selectable in this case when the audio input terminal is provided on the front surface portion of the speaker frame portion 21 (the surface portion on the side where the sound output portion 22 is provided). The diameter of the acoustic output part is shown. In FIG. 3, the thick line indicates the diameter of the acoustic output unit 22 actually provided in the speaker frame unit 21.

  As can be seen from FIG. 3, when the audio input terminal is provided on the front surface portion of the speaker frame unit 21, the installation area of the sound output unit is eroded by the installation area of the audio input terminal. In addition, there is a disadvantage that the sound output portion has a considerably small diameter.

  On the other hand, in the case of the speaker device 6 provided in the mobile phone according to the embodiment, by providing the speaker function unit 23 having the substantially circular sound output unit 22 in the substantially rectangular speaker frame unit 21, The pair of cutout portions 25 are formed in an excess portion formed between each end portion 25 of the speaker frame portion 21 and the outer peripheral portion of the sound output portion 22 of the speaker function portion 23. An audio signal input terminal 26 is provided in each section 25.

  For this reason, after securing the part (= part of the said notch part 25) which provides each audio | voice input terminal 26, as shown by the thick line in FIG. 3, the sound output part of the diameter of the speaker frame part 21 full size is shown. The speaker function part 23 provided with 22 can be provided in the speaker frame part 21 (see the comparison of the diameter of the dotted line and the diameter of the thick line in FIG. 3). Accordingly, since the speaker function unit 23 including the large-diameter sound output unit 22 can be provided, it is possible to obtain a high-quality sound output through each of the speaker devices 11 and 12.

Further, when the first and second speaker devices 11 and 12 are installed side by side in the lateral direction of the housing 1, the installation area of the first speaker device 11 and the second speaker are set as the installation area of the entire speaker device 6. An installation area that is a sum of the installation area of the device 12 is required, but the speaker device 6 provided in the mobile phone according to the present embodiment has the first and the first as described with reference to FIG. 2 is formed by connecting the bottom portions of the speaker devices 11 and 12 via the adhesive member 20, and the sound emission direction of the first speaker device 11 as shown in FIGS. 1 (a) and 1 (b). Is directed to the front portion 1a side of the casing 1 of the mobile phone, and the sound output direction of the second speaker device 12 is directed to the rear portion 1b side of the casing 1 of the mobile phone. It is installed so as to overlap the speaker storage portion 8 in the body 1. For this reason, the speaker device 6 can be installed in the housing 1 with a 1/2 installation area compared to the case where the first and second speaker devices 11 and 12 are installed side by side.

[Connection process of speaker device and flexible substrate]
Next, in FIG. 4A, the speaker device 6 formed by connecting the bottom surface portions of the first and second speaker devices 11 and 12 to each other through the adhesive member 20 is connected to the side surface portion 24 side (see FIG. = The figure seen from the surface side where each audio signal input terminal 25 is provided). As can be seen from FIG. 4A, when the first and second speaker devices 11 and 12 are connected to each other as described above, the audio signal input terminals 25 of each pair of the speaker devices 11 and 12 are moved up and down. It will be lined up. Then, four terminal portions provided on the flexible substrate are soldered to the respective audio signal input terminals 25.

  However, since this soldering process is performed manually for each terminal part, it is possible to accurately solder all four terminal parts without causing a positional shift of the soldering process. Is very difficult.

  For this reason, with respect to the speaker device 6 provided in the mobile phone according to the embodiment, the above-mentioned positional deviation can be achieved by soldering the special-shaped flexible substrate 30 (FPC) shown in FIG. It comes to prevent.

  Specifically, FIG. 4B is a diagram illustrating a portion of the terminal portion of the flexible substrate 30 that is connected to each audio signal input terminal 25 of the speaker device 6. As can be seen from FIG. 4B, the flexible substrate 30 is a pair of long plates provided at substantially equal intervals with the lateral width of each speaker device 11, 12 (= interval between the pair of audio signal input terminals 25). The arm portion 31 is provided.

  As shown in FIG. 4 (a), each arm portion 31 is a positioning protrusion for insertion into a gap portion 40 formed between one side surface portion 24 of each speaker device 11, 12 having the bottom surface portions connected to each other. Each has a portion 32. Each arm portion 31 has a terminal portion 33 at a position where it abuts on each audio signal input terminal 25 of each speaker device 11, 12 with each positioning projection 32 inserted into the gap portion 40. is doing. Each terminal portion 33 of each arm portion 31 is provided with a hole 34 for soldering and processing so as to cut out a part of the arm portion 31.

  When performing the soldering process of the flexible substrate 30 as described above, first, the speaker device 6 is formed by connecting the bottom portions of the speaker devices 11 and 12 to each other via the adhesive member 20 as described above.

  Next, as shown in FIG. 5, the positioning protrusions 32 of the flexible substrate 30 are inserted into the gaps 40 formed between the side surfaces 24 of the speaker devices 11 and 12 thus connected. Thereby, each terminal part 33 provided in each arm part 31 of the flexible substrate 30 is in contact with each audio signal input terminal 25 of each speaker apparatus 11, 12 with respect to each speaker apparatus 11, 12. Thus, the flexible substrate 30 is positioned (temporarily fixed). In FIG. 5, the flexible substrate 30 in the temporarily fixed state is indicated by a thick line.

  Next, the audio signal input terminals of the terminal portions 33 and the speaker devices 11 and 12 are connected through the hole portions 34 of the terminal portions 33 of the flexible board 30 in the temporarily fixed state as described above. Solder by hand.

The flexible board 30 is provided with a pair of positioning projections 32, and the positioning projections 32 are inserted into the gaps 40 between the speaker devices 11 and 12 during the soldering process. The flexible substrate 30 is temporarily fixed to the speaker devices 11 and 12 with the terminal portions 33 of the flexible substrate 30 and the audio signal input terminals 25 of the speaker devices 11 and 12 in contact with each other. . Then, each terminal portion 33 of the temporarily fixed flexible board 30 is soldered to each audio signal input terminal 25 of each speaker device 11, 12. As a result, the soldering process is performed without causing a positional shift in a state where each terminal portion 33 of the flexible substrate 30 is accurately aligned with each audio signal input terminal 25 of the first and second speaker devices 11 and 12. It can be carried out.

[Storing process of speaker device]
Next, in the speaker device 6 in which the flexible substrate 30 is soldered in this way, the flexible substrate 30 is appropriately bent, and the speaker device 6 shown in FIGS. Stored. FIG. 6A shows a view of the speaker device 6 in the state housed in the speaker housing portion 8 from the side surface side, and FIG. 6B shows the speaker device 6 in the state housed in the speaker housing portion 8. FIG. 7 is a perspective view of the speaker device 6 in a state of being housed in the speaker housing portion 8. In FIGS. 6A, 6B, and 7, the flexible substrate 30 is indicated by a bold line.

  When the speaker device 6 is stored in the speaker storage unit 8, the speaker device 6 in a state where the flexible substrate 30 is soldered mainly from the first speaker device 11 to the speaker storage unit as illustrated in FIG. 8 (= stored in the speaker storage unit 8 with the first speaker device 11 facing down). As a result, the flexible substrate 30 soldered to the speaker device 6 housed in the speaker housing portion 8 protrudes from the speaker housing portion 8 and stands up.

  Next, the standing flexible substrate 30 is bent in the storage direction of the speaker device 6 stored in the speaker storage unit 8 as shown in FIG. Process. As a result, the flexible substrate 30 that protrudes from the speaker storage portion 8 and stands up is extended along the storage direction of the speaker device 6.

  Next, as shown in FIGS. 6A and 7, the speaker device 6 in which the flexible substrate 30 extending along the storage direction of the speaker device 6 is stored in the speaker storage portion 8. The bending process is again performed in the direction along the first speaker device 11. Then, the flexible substrate 30 is incorporated into the housing 1 in a state of being bent in the direction along the first speaker device 11 in this manner.

Thereby, as shown in FIGS. 6A and 6B, the portion of the flexible substrate 30 that is bent in the storage direction of the speaker device 6 stored in the speaker storage unit 8 is the speaker storage unit 8 and the housing. Thus, the speaker device 6 and the flexible substrate 30 soldered to the speaker device 6 are accommodated in the casing 1 of the mobile phone. .

[On / off control of each speaker device according to usage conditions]
Next, in the case of the mobile phone of the embodiment, for example, each speaker device 11, 12 is controlled by performing on / off control of each speaker device 11, 12 according to usage conditions such as during a handset call or when a ring tone is output. 12 is selectively used.

  First, FIG. 8 shows a block diagram of the mobile phone of this embodiment. As shown in FIG. 8, the mobile phone according to the embodiment includes an antenna 51 that performs wireless communication such as voice call, videophone call, e-mail, and Web data (Web: World Wide Web) with a base station. And the communication circuit 52, the speaker unit 6 including the first and second speaker devices 11 and 12 described above, the microphone unit 4 for collecting the transmitted voice and the voice around the mobile phone, and the operation. Display unit 2 for displaying menus, e-mails, images (still images and moving images), an input operation for a desired menu or message, and an operation for specifying a desired volume of audio output from the speaker unit 6 And the like, a light emitting unit 53 (LED: Light Emitting Diode) for notifying the user of incoming / outgoing calls and the like, and a camera unit for capturing a moving image or a still image of a desired subject 5 and 7 Have.

  The mobile phone also vibrates the housing 1 of the mobile phone to notify the user of incoming / outgoing calls, a timer 55 for counting time, and wireless communication processing via the base station. In addition to a communication program and various application programs to be performed, a memory 56 storing various data (contents) handled by each application program and a control unit 57 for controlling the operation of the entire mobile phone are provided. Yes.

  In the memory 56, in addition to the communication program, on / off control of the first and second speaker devices 11 and 12 and sound output for adjusting the volume of the sound output from the speaker devices 11 and 12 according to the use conditions Web browsing for browsing a control program, a camera control program for controlling the imaging of the camera units 5 and 7, and a Web page published on a server device provided on a predetermined network such as a communication network or the Internet A program, an e-mail management program for controlling creation and transmission / reception of e-mails, a schedule book management program for managing a schedule book in which a user's schedule is registered, and a telephone for managing a phone book Book management program and music content playback A music player program for are stored.

  Also, in the memory 56, a schedule book in which a user's desired schedule is registered, a user name such as a user's acquaintance or friend, a still image, an address, a telephone number, an e-mail address, and a date of birth are registered. Phone book, music content played based on the music player program, still image content and moving image content played based on the viewer function of the camera control program, sent and received email content, phone and email Is stored.

  In addition, the memory 56 stores each speaker according to use condition speaker on / off information, which is on / off information of the speaker devices 11 and 12 predetermined for each use condition of the mobile phone, and the volume specified by the user. An audio output control table 70 that stores the volume of audio output from the devices 11 and 12 is stored.

  Next, FIG. 9 shows a block diagram corresponding to the sound output control of the speaker devices 11 and 12 performed based on the sound output control program stored in the memory 56. The block diagram shown in FIG. 9 also shows functional blocks of each function accompanied by output of a predetermined sound. Specifically, the scheduler function unit 61 shown in FIG. 9 is a function for managing the user's schedule based on the schedule book management program stored in the memory 56. For example, the scheduler function unit 61 has a predetermined function at a time designated by the user. This function generates an alarm sound.

  The music playback function unit 62 is a function for playing back music content based on the music player program stored in the memory 56. The ring tone playback function unit 63 is a predetermined function when a call or e-mail is received. This is a function that generates a ringtone. The voice phone function unit 64 is a function for executing a voice call, and the TV phone function unit 65 is a function for executing a TV phone for making a call while transmitting and receiving voice and images to and from the other party.

  Note that the various functions shown in FIG. 9 are merely examples, and in addition to this, a reception function for digital terrestrial television broadcasting, a function for generating an operation sound of the operation unit 3, a function for generating a dial tone when an e-mail is transmitted, and the like. May be included.

  As can be seen from FIG. 9, the mobile phone of the present embodiment is the speaker that is on-controlled by the on / off control unit 66 in accordance with the use conditions of the mobile phone, of the first and second speaker devices 11 and 12. The sound generated by each of the functions 61 to 65 is output via the device.

  Specifically, on / off information of each speaker device 11 and 12 corresponding to each use condition is stored in the audio output table 70 as shown in FIG. The control unit 57 refers to the audio output table 70 based on the usage conditions of the mobile phone, and controls the speaker devices 11 and 12 to be on or off so as to be in a control state corresponding to the usage conditions.

  For example, when the user puts the first speaker device 11 of the mobile phone in his / her ear and makes a transmission through the microphone unit 4 during a so-called handset call, the control unit 57 displays the front speaker as shown in FIG. The on / off control unit 66 is controlled to turn on the first speaker device 11 that is a device and turn off the second speaker device 12 that is a rear speaker device.

  During this handset call, the received voice from the voice telephone function unit 64 serving as a function based on the communication program is supplied to the on / off control unit 66. Since the on / off control unit 66 turns on the first speaker device 11 and turns off the second speaker device 12, the received voice is used as the first speaker device via the amplifier unit 67. 11 is output only.

  Next, the transmission voice is transmitted together with the captured image captured by the first camera unit 5 for so-called hands-free calling or self-portrait that enables the user to talk without holding the mobile phone. As shown in FIG. 10, the control unit 57 turns on both the first speaker device 11 that is the front speaker device and the second speaker device 12 that is the rear speaker device. The on / off control unit 66 is controlled as described above.

  During this hands-free call, the received voice from the voice telephone function unit 64, which is a function based on the communication program, is supplied to the on / off control unit 66. Since the on / off control unit 66 turns on both the first speaker device 11 and the second speaker device 12, the received voice is output from the first speaker device 11 via the amplifier unit 67. The signal is output from the second speaker device 12 via the amplifier unit 68 and the band-specific output adjustment unit 69.

  In addition, during a videophone call, the received voice from the videophone function unit 65, which is a function based on the communication program, is supplied to the on / off control unit 66. Since the on / off control unit 66 turns on both the first speaker device 11 and the second speaker device 12, the received voice is output from the first speaker device 11 via the amplifier unit 67. The signal is output from the second speaker device 12 via the amplifier unit 68 and the band-specific output adjustment unit 69.

  In this example, the first speaker device 11 and the second speaker device 12 are both turned on during a hands-free call and a video phone call. However, the second speaker device 12 that is a rear speaker device is On / off control may be performed according to user settings. In this case, based on the setting menu, the user selects and sets the on setting or the off setting of the second speaker device 12 during a hands-free call and a video phone call. This selection setting information is registered in the audio output control table. When a hands-free call or a videophone call is made, the control unit 57 refers to the selection setting information registered in the audio output control table and controls the second speaker device 12 to be on or off. Thus, the user's intention can be reflected in the on / off control of the second speaker device 12 during the hands-free call and the video phone call.

  Here, in the case of the mobile phone according to the embodiment, the second speaker device 12 can be automatically controlled on and off in accordance with noise around the mobile phone during a hands-free call and a video phone call. Yes. Specifically, as a selection item of the setting menu for the second speaker device 12 at the time of a hands-free call and a video phone call, a selection item reflecting the user setting and an on / off control automatically according to ambient noise And a selection item to be provided.

  When the user has selected a selection item for automatic on / off control in accordance with ambient noise, the control unit 57 is configured to pick up the ambient sound collected by the microphone unit 4 when a hands-free call or a videophone call is made. Detect noise. In addition, as the microphone unit for detecting the ambient noise, the microphone unit 4 for collecting the transmitted voice may be used, or a microphone unit for detecting the ambient noise is provided separately from the microphone unit 4. May be.

  When the volume of ambient noise detected by the microphone unit 4 is equal to or higher than a predetermined volume, the control unit 57 causes both the first speaker device 11 and the second speaker device 12 to be connected via the on / off control unit 66. Turn on control. Thereby, for example, when the surroundings of the mobile phone is in a somewhat noisy environment, the received voice can be output through the two speaker devices 11 and 12, and the received voice is listened to the user of the mobile phone. Can be made easier.

  On the other hand, when the volume of the sound around the mobile phone detected by the microphone unit 4 is lower than a predetermined volume, the control unit 57 controls the first speaker device 11 to be turned on and the second speaker. Control the device off. As a result, for example, when the environment around the mobile phone is quiet, the received voice can be output only from the first speaker device 11 which is the front speaker device, and the received voice having a louder volume than necessary is output from the speaker. The inconvenience output from the apparatus can be prevented.

  Next, at the time of music playback for playing music content based on the music player program stored in the memory 56, the control unit 57, as shown in FIG. 10, the first speaker device 11, which is a front speaker device, And the on-off control part 66 is controlled so that the 2nd speaker apparatus 12 which is a rear speaker apparatus may be turned on together. Accordingly, the reproduction output of the music content from the music reproduction function unit 62 is output via the first and second speaker devices 11 and 12, respectively, and it is possible to satisfactorily listen to the music content by so-called stereo reproduction. Can do.

  Next, when there is an incoming call or e-mail to the mobile phone, the control unit 57 turns off the first speaker device 11 which is the front speaker device as shown in FIG. The on / off controller 66 is controlled to turn on the second speaker device 12. As a result, a predetermined ringtone from the ringtone reproduction function unit 63 is output only from the second speaker device 12 which is a rear speaker device.

Next, when the alarm sound is output based on the schedule book management program stored in the memory 56, the control unit 57 turns off the first speaker device 11, which is the front speaker device, as shown in FIG. The on / off control unit 66 is controlled so as to turn on the second speaker device 12 which is the speaker device. Thereby, the predetermined alarm sound from the scheduler function part 61 is output only from the 2nd speaker apparatus 12 which is a rear speaker apparatus.

[Output volume control of each speaker unit]
Next, when listening to the sound with such a mobile phone, the user normally listens to the sound output from each speaker device 11, 12 in a state of facing the display unit 2. However, in the case of the mobile phone according to the embodiment, the first speaker device 11 is configured so that the sound output unit that emits sound faces the front part 1a side of the housing 1 (= the display surface side of the display part 2). In addition, the second speaker device 12 is provided in the housing 1 such that the sound output unit that emits sound faces the back surface portion 1d side of the housing 1 (= sound emission of each speaker device 11, 12). The direction is approximately 180 degrees different.)

  For this reason, when the user listens to the sound while facing the display unit 2, the volume of the sound reaching the user's ear is different for each of the speaker devices 11 and 12. That is, the volume of the sound output from the second speaker device 12 that emits sound in the opposite direction to the user is larger than the volume of the sound output from the first speaker device 11 facing in this state. This causes a disadvantage that the sound volume balance from the speaker devices 11 and 12 that reach the user's ear is poor.

  In the case of the mobile phone according to the embodiment, the control unit 57 outputs audio through the two speaker devices 11 and 12 such as during the above-described hands-free call, video phone call, and music playback. First, the amplifier unit 68 connected to the second speaker device 12 is set and controlled to gain a predetermined amount larger than the gain set in the amplifier unit 67 which is a variable gain amplifier unit. As a result, the volume of the sound output via the second speaker device 12 can be increased by a predetermined amount from the volume of the sound output via the first speaker device 11. Note that the gain set in each of the amplifier units 67 and 68 is variably set by the control unit 57 based on the audio level designated by the user.

  Next, the control unit 57 adjusts the volume for each band such as a high tone and a low tone with respect to the sound output from the amplifier unit 68 that supplies the sound to the second speaker device 12 via the output adjustment unit 69 for each band. Take control.

  Specifically, the sound output from the speaker device is easy to go around the casing 1 because the bass has a wide directivity, and goes around the casing 1 because the high sound has a narrow directivity. It has difficult characteristics. The audio output table 70 stores high and low adjustment volumes for each volume of audio output from the speaker devices 11 and 12.

  For this reason, the control unit 57 refers to the sound output table 70 based on the sound volume output from each speaker device 11, 12, thereby adjusting the high and low sound adjustment volumes for the sound output from the amplifier unit 68. Recognizing and adjusting the control so that the volume of the treble sound output from the amplifier 68 is increased by a predetermined amount and the volume of the bass is increased by a predetermined amount via the band-specific output adjustment unit 69.

As a result, it is possible to cause sound having a volume equivalent to that of the sound output from the first speaker device 11 to circulate from the second speaker device 12 to the first speaker device 11 side. Therefore, even when the sound output direction of each speaker device 11, 12 is approximately 180 degrees different and the user listens to the sound output from each speaker device 11, 12 with the display unit 2 facing the display unit 2, On the other hand, the sound can be heard so that sound of the same volume is output from each of the speaker devices 11 and 12.

[Effect of the embodiment]
As is apparent from the above description, the cellular phone of this embodiment is provided with a speaker function unit 23 having a substantially circular sound output unit 22 in a substantially rectangular speaker frame unit 21, thereby providing the speaker frame. A pair of cutout portions 25 are formed in an excess portion formed between each end portion 25 of the portion 21 and the outer peripheral portion of the sound output portion 22 of the speaker function portion 23, and an audio signal is transmitted to each cutout portion 25. Input terminals 26 are provided.

  For this reason, the speaker function part 23 provided with the sound output part 22 of the diameter of the speaker frame part 21 full size after securing the part (= part of the said notch part 25) which provides each audio | voice input terminal 26 is provided. The speaker frame unit 21 can be provided. Accordingly, since the speaker function unit 23 including the large-diameter sound output unit 22 can be provided, it is possible to obtain a high-quality sound output through each of the speaker devices 11 and 12.

  Further, when the first and second speaker devices 11 and 12 are two-dimensionally arranged side by side in the lateral direction of the housing 1, the installation area of the first speaker device 11 is set as the installation area of the entire speaker device 6. Although the installation area which added the installation area of the 2nd speaker apparatus 12 is needed, in the case of the mobile phone of the said embodiment, each bottom face part of the 1st and 2nd speaker apparatuses 11 and 12 is adhesive member. 20 so that the sound emission direction of the first speaker device 11 faces the front portion 1a side of the casing 1 of the mobile phone, and the second speaker device 12 emits light. It is installed so as to overlap the speaker storage portion 8 in the housing 1 so that the sound direction faces the back surface portion 1b side of the housing 1 of the mobile phone. For this reason, it is possible to install the two speaker devices 11 and 12 in the housing 1 with a half installation area compared to the case where the first and second speaker devices 11 and 12 are installed side by side. it can. Therefore, since the two speaker devices 11 and 12 can be provided with a small setting area, the casing 1 of the mobile phone can be downsized.

  Further, when connecting the speaker device 6 and the flexible substrate 30, a pair of positioning projections 32 are provided on the flexible substrate 30, and the positioning projections 32 are provided in the gap 40 between the speaker devices 11 and 12. By inserting the flexible board 30, the flexible board 30 is temporarily attached to the speaker apparatuses 11 and 12 in a state where the terminal portions 33 of the flexible board 30 and the audio signal input terminals 25 of the speaker apparatuses 11 and 12 are in contact with each other. Stop. Then, each terminal portion 33 of the temporarily fixed flexible board 30 is soldered to each audio signal input terminal 25 of each speaker device 11, 12. As a result, the soldering process is performed without causing a positional shift in a state where each terminal portion 33 of the flexible substrate 30 is accurately aligned with each audio signal input terminal 25 of the first and second speaker devices 11 and 12. It can be carried out.

  Also, in the WCDMA communication standard (WCDMA: Wideband Code Division Multiple Access), the narrowband voice band is 200 MHz to 3.4 KHz, while wideband support for extending the voice band to 7 MHz has been proposed. In the received voice speaker apparatus, since the resonance frequency is designed to be low in accordance with the narrow band voice band, it is difficult to cope with the wide band. On the other hand, in the mobile phone of this embodiment, the first speaker device 11 capable of reproducing a wide band is used both as a speaker device for outputting music and the like and a speaker device for outputting received voice. Therefore, it is possible to support the wide band as it is.

  Moreover, since each speaker apparatus 11 and 12 is the same diameter, the leak sound from the 2nd speaker apparatus 12 used as a rear speaker apparatus is interrupted | blocked mechanically by the 1st speaker apparatus 11 main body which is a front speaker apparatus. be able to.

  In addition, by performing on / off control of the speaker devices 11 and 12 according to usage conditions such as during a handset call, ringtone output, and music playback, the speaker devices 11 and 12 can be controlled according to the usage conditions. It is possible to properly use them appropriately.

In addition, when outputting sound through the two speaker devices 11 and 12 such as during a hands-free call, a video phone call, and music playback, the volume of the sound output through the first speaker device 11 In addition, the gains set in the amplifier units 67 and 68 connected to the speaker devices 11 and 12 are adjusted so that the volume of the sound output via the second speaker device 12 is increased by a predetermined amount. Furthermore, adjustment control is performed so that the high-pitched sound volume of the sound output from the amplifier unit 68 connected to the second speaker device 12 is increased by a predetermined amount, and the low-pitched sound volume is increased by a predetermined amount. As a result, it is possible to cause sound having a volume equivalent to that of the sound output from the first speaker device 11 to circulate from the second speaker device 12 to the first speaker device 11 side. Therefore, even when the sound output direction of each speaker device 11, 12 is approximately 180 degrees different and the user listens to the sound output from each speaker device 11, 12 with the display unit 2 facing the display unit 2, On the other hand, the sound can be heard so that sound of the same volume is output from each of the speaker devices 11 and 12.

[Modification]
The above-described embodiment is an example in which the present invention is applied to a mobile phone. However, the present invention is not limited to the PHS phone (PHS: Personal Handyphone System), the PDA device (PDA: Personal Digital Assistant), and the notebook type. The present invention may be applied to other portable devices such as personal computer devices and portable game machines. In either case, the same effect as described above can be obtained.

  Finally, the above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention. I add that there is something.

It is a figure which shows the external appearance of the mobile telephone used as embodiment which applied this invention, and the storage position of a speaker apparatus. It is a perspective view of the speaker apparatus provided in the mobile phone of the embodiment. It is a top view of the speaker device provided in the mobile phone according to the embodiment. It is a figure which shows the back surface of the speaker apparatus provided in the mobile telephone of embodiment, and the flexible substrate soldered to this speaker apparatus. It is a figure which shows the flexible substrate of the state temporarily fixed to the speaker apparatus provided in the mobile telephone of embodiment. It is a figure which shows the accommodation state of the flexible substrate soldered to the speaker apparatus and this speaker apparatus with respect to the housing | casing of the mobile telephone of embodiment. It is a perspective view of the flexible substrate soldered to the speaker device of the mobile phone according to the embodiment. 1 is a block diagram of a mobile phone according to an embodiment. It is a block diagram including a partial functional block of the mobile phone according to the embodiment. It is a figure for demonstrating the on-off control of the 1st and 2nd speaker apparatus according to the use conditions in the mobile telephone of embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Mobile phone housing, 1a Front surface of mobile phone housing, 1b Bottom surface of mobile phone housing, 1c Top surface of mobile phone housing, 1d Back surface of mobile phone housing, 2 Mobile phone Display unit, 3 mobile phone operation unit, 4 mobile phone microphone unit, 5 first camera unit for selfie, 6 speaker device, 7 second camera unit, 8 speaker storage unit, 11 first speaker Device, 12 second speaker device, 20 adhesive member of first and second speaker devices, 21 speaker frame portion, 22 sound output portion, 23 speaker function portion, 24 one side portion of speaker device, 25 notch portion, 26 Audio signal input terminal provided in the notch, 30 flexible substrate, 31 flexible substrate arm, 32 flexible substrate positioning projection, 33 Terminal portion of the kibble substrate, 34 Hole for soldering processing of the flexible substrate, 40 Gap portion of the first and second speaker devices, 51 Antenna, 52 Communication circuit, 53 Light emitting portion (LED), 54 Vibration unit, 55 timer, 56 memory, 57 control unit, 61 scheduler function unit, 62 music playback function unit, 63 ringtone playback function unit, 64 voice phone function unit, 65 TV phone function unit, 66 on / off control unit, 67 first speaker Amplifier unit for device, 68 Amplifier unit for second speaker device, 69 Output adjustment unit for each band, 70 Audio output control table

Claims (7)

A first speaker device for emitting sound;
By providing the bottom surface portion opposite to the bottom surface portion on the side opposite to the sound emitting portion of the first speaker device, the sound is emitted in a direction opposite to the sound emitting direction of the first speaker device. A second speaker device provided to perform sound;
Of the first and second speaker devices, an on / off control means for on / off controlling a speaker device used for outputting sound according to a use condition of the mobile terminal device;
Voice output control means for controlling the output of predetermined sound via the first speaker device and / or the second speaker device that is on-controlled by the on / off control means,
In the first speaker device and the second speaker device, the bottom portions are opposed to each other so that the sound emission directions are opposite to each other, and each sound emission direction is the mobile phone. A portable terminal device provided so as to be in a direction along a thickness direction of the terminal device. The mobile terminal device according to claim 1,
When the sound output control means outputs sound from the first speaker device and the second speaker device, the sound output control means outputs the sound from the second speaker device rather than the sound volume output from the first speaker device. The volume of the sound output from each speaker device is adjusted and controlled so that the volume of the sound to be output increases by a predetermined amount, and the volume of the high frequency of the sound output from the second speaker device is increased and the volume of the low frequency is increased. The mobile terminal device is characterized by adjusting and controlling the volume of the sound output from the second speaker device so as to reduce the noise. The portable terminal device according to claim 1 or 2, wherein
Wireless phone function,
A microphone unit for detecting the transmitted voice;
The first speaker device combines a speaker device for outputting a predetermined sound and a speaker device for outputting a received sound,
The on / off control means turns on the first speaker device serving as the dual speaker device and controls the second speaker device off during a call using the wireless telephone function. A portable terminal device. It is a portable terminal device given in any 1 paragraph among Claims 1-3,
With hands-free radio telephone function,
A surrounding sound detection microphone unit for detecting sound around the mobile terminal device;
The on / off control means is configured to perform the above operation when the volume of the sound around the mobile terminal device detected by the ambient sound detection microphone unit during a call using the hands-free wireless telephone function is equal to or higher than a predetermined volume. The first speaker device and the second speaker device are both turned on, and the volume of the sound around the mobile terminal device detected by the surrounding sound detection microphone unit is lower than a predetermined volume. A portable terminal device, wherein the speaker device is controlled to be turned on and the second speaker device is turned off. The mobile terminal device according to claim 3 or 4, wherein
Has a ring tone output function in the wireless telephone function or the hands-free wireless telephone function,
When the ring tone is output based on the ring tone output function, the on / off control means controls the first speaker device, which is the dual speaker device, to be off, and turns on the second speaker device. A portable terminal device characterized by controlling. The mobile terminal device according to claim 3,
Has an alarm sound output function,
When the alarm sound is output based on the alarm sound output function, the on / off control means controls the first speaker device, which is the dual speaker device, to be turned off, and the second speaker device A portable terminal device characterized by on-control. The portable terminal device according to any one of claims 1 to 6,
Has a music playback function,
The portable terminal device, wherein the on / off control means performs on control of both the first and second speaker devices when performing music output based on the music playback function.

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