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JP2001230841

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2001230841
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
portable terminal, and in particular, a sub-sound hole for deriving sound from a surface other
than the side on which a diaphragm of a sound source is provided and emitting the derived
sound to the outside of a housing. The mobile terminal
[0002]
2. Description of the Related Art Heretofore, as a portable terminal having a structure in which
this kind of sound hole is devised, for example, there has been one as shown in FIG. 18 and FIG.
According to the portable terminal, the first sound hole 30 provided on the upper surface of the
housing 33 is provided with a cushion 34 having a plurality of L-shaped sound paths provided in
close contact with the sound source 32 such as a buzzer. In addition, sound is also emitted from
the second sound hole 31 on the side. That is, by providing a plurality of sound holes for one
sound source, for example, even when one sound hole is blocked, if the other sound hole is open,
the deterioration of the sound pressure of the ringing tone of the buzzer is compensated. It can
be done. (Japanese Unexamined Patent Publication No. 9-289538).
[0003]
However, the structure around the sound source of such a conventional portable terminal is a
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structure in which only the sound on the front side of the diaphragm of the sound source is
divided into a plurality of directions. It is not structured to take advantage of the sound emitted
from the back side. Therefore, when the sound pressure is insufficient only with the sound
obtained from the front side of the diaphragm of the sound source, it is general to change the
output of the sound source to a higher one or to increase the voltage supplied to the sound
source. It was a coping measure. There is a problem that the use of a high output sound source
or an increase in voltage supplied to the sound source results in an increase in wasteful power
consumption. In particular, so-called portable terminals such as mobile phones, PHSs and
portable radios are very important elements to keep the continuous call time and standby time
long, so use a large power consumption as a sound source or a sound source It should be avoided
to raise the voltage supplied more than necessary.
[0004]
The present invention has been made to solve the above-mentioned conventional problems, and
efficiently housings the sound derived from the diaphragm without making the sound source
large in power consumption or raising the voltage supplied to the sound source. A portable
terminal having an audio deriving structure configured to emit to the outside and to increase the
sound pressure of the emitted audio.
[0005]
The portable terminal according to the present invention is not limited to a sound source for
generating voice, a main sound hole formed in a casing in the direction of the main sound
generation surface of the sound source, and a main sound generation surface of the sound
source. And an audio lead-out structure having one or more sub-sound holes provided in the
housing so as to emit the sound generated from the other surface of the sound source to the
outside; Sounds are emitted from the main sound hole and the sub sound hole to the outside,
respectively.
With this configuration, the sound pressure of the sound emitted to the outside of the casing can
be increased by efficiently emitting the sound derived from the surface other than the sound
main generation surface of the sound source to the outside of the apparatus.
[0006]
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The portable terminal in the present invention has a configuration in which the one or more subsound holes are provided in a housing opposite to the main sound generating surface of the
sound source. With this configuration, by adding a plurality of directivity to the sound obtained
from the sound source, for example, even if the main sound hole is blocked by some obstacle, the
sound from the back side sound hole compensates for the attenuation of the sound of the main
sound hole. be able to.
[0007]
The portable terminal according to the present invention has a configuration in which the one or
more sub-sound holes are provided in a housing on the side of the main sound generation
surface of the sound source. With this configuration, by adding a plurality of directivity to the
sound obtained from the sound source, for example, even if the main sound hole is interrupted
by some obstacle, the sound from the side sub sound hole compensates for the attenuation of the
sound of the main sound hole be able to.
[0008]
The portable terminal according to the present invention has a configuration in which the one or
more sub-sound holes are provided in a housing on the front side of the main sound generation
surface of the sound source. According to this configuration, the sound pressure obtained can be
enhanced by adding sound from the back of the sound source as an auxiliary sound from the side
sound hole in the same direction as the main sound hole, in addition to the sound from the main
sound hole.
[0009]
The portable terminal in the present invention has a configuration in which the one or more subsound holes are provided in a housing in a predetermined angular direction from the main sound
generation surface of the sound source. According to this configuration, the sound pressure of
the voice in any direction can be enhanced by providing the sub-tone hole in any direction.
[0010]
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In the portable terminal according to the present invention, the sound deriving structure includes
a sound guiding tube for guiding sound from the sound source to the sub-sound hole, and a
cushion is held between the sound guiding tube and the storage portion of the sound source. It
has the composition of. With this configuration, sound leakage from the sound emitted from the
opposite side of the sound source can be suppressed by the cushion, and at the same time, dust
and dirt can be prevented from entering the inside of the housing from the sub sound hole.
[0011]
In the portable terminal of the present invention, the storage portion of the sound source is
formed of hard resin, and the space between the storage portion of the sound source and the
sound guiding tube and between the storage portion of the sound source and the sound source
are formed of soft resin The soft resin of the portion facing the sound source is in close contact
with the sound source. With this configuration, it is possible to prevent sound leakage, secure a
prescribed sound pressure and secure a prescribed sound image by utilizing a resin of two-color
molding, and the advantages of the two-color molding structure and the advantages of the
structure for holding a cushion Can be combined.
[0012]
The portable terminal in the present invention has a configuration in which an electromagnetic
shield is provided to the voice deriving structure. With this configuration, the sound deriving
structure is electromagnetically shielded to give flexibility to the sound image, directivity and
sound pressure obtained from the sound generating device, and the sound source is
electromagnetically shielded to allow the sound source to be in and out of the sound generating
device. It is possible to suppress the influence of electromagnetic noise.
[0013]
The portable terminal in the present invention has a configuration in which the voice deriving
structure is configured for voice deriving of a hands-free function. With this configuration, for
example, the sound pressure of the sound emitted from the main sound hole of the hands-free
speaker of the portable terminal can be compensated by the sound emitted from the sub sound
hole. If the sound pressure of the sound from the main sound hole is insufficient due to the lack
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of air space capacity, the sound pressure shortage is resolved, or, for example, even if the main
sound hole is blocked by some external failure, the sub sound The sound of the hole can
compensate for the deterioration of the sound pressure of the main sound hole due to a fault.
[0014]
In the portable terminal according to the present invention, the voice deriving structure has a
configuration in which the sound source is configured to derive voice of a buzzer. With this
configuration, it is possible to give flexibility to the sound image, directivity and sound pressure
of the sound generation device, so that the sound pressure of the sound emitted from the main
sound hole of the buzzer of the portable terminal is released from the sub sound hole, for
example. Even if the sound pressure of the sound from the main sound hole is insufficient due to,
for example, insufficient power of the sound source itself or insufficient capacity of the sound
chamber, the sound pressure shortage is solved by supplementing with sound. Even if the
external obstruction is blocked, the sound of the sub-sound hole can compensate for the
deterioration of the sound pressure due to the obstruction.
[0015]
In the portable terminal according to the present invention, the voice deriving structure has a
configuration in which a sound source is configured to derive a voice of a ringing tone. With this
configuration, it is possible to give flexibility to the sound image, directivity and sound pressure
of the sound generation device, so for example the sound pressure of the ringing tone emitted
from the main sound hole of the sound source of the portable terminal is released from the sub
sound hole To compensate for the lack of sound pressure even if the sound pressure of the sound
from the main sound hole is insufficient due to the lack of power of the sound source itself or the
capacity of the sound chamber, for example. Even if the sound is blocked by some external fault,
the sound of the sub-sound hole can compensate for the deterioration of the sound pressure due
to the fault.
[0016]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the
embodiments of the present invention in detail, the background and outline of the present
invention will be described first. Generally, the sound source built in the portable terminal
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generates and emits most of the sound due to the vibration of the diaphragm of the sound source
itself from the front side of the diaphragm, but the sound due to the vibration of the diaphragm is
the other surface of the diaphragm, That is, it is also released to the back side. The sound emitted
to the back side of the diaphragm is interrupted by the coil or housing of the sound source and is
not as large as the sound directed to the front of the diaphragm, but it can not be ignored.
[0017]
Therefore, for example, in a portable terminal incorporating a hands-free speaker that can be
used without holding it on the table, etc., the voice emitted from the back of the diaphragm of the
hands-free speaker is effectively derived to For example, in a conventional portable terminal, the
main sound hole of the hands-free speaker is blocked by the floor, wall, figurine, or some
obstacle, and the sound pressure is attenuated by having a structure in which the sound is
emitted from the sub sound hole provided in the housing. If the sound derived from the back of
the diaphragm of the hands-free speaker is emitted from the sub-sound hole even if an accident
that may cause an accident occurs, the loss of the sound from the front side of the diaphragm is
compensated. be able to.
[0018]
Further, according to the embodiment of the present invention, the directivity of the voice is
corrected according to the embodiment of the present invention, in which the directivity of the
sound emitted from the handsfree speaker of the portable terminal is conventionally limited to
one in the front direction of the diaphragm of the sound source Can.
In addition, even if the sound pressure of the hands-free speaker is insufficient, the embodiment
of the present invention increases the voltage applied to the hands-free speaker or replaces the
hands-free speaker with one having a higher sound pressure. The sound pressure of the handsfree speaker can be compensated without being Further, by arbitrarily combining the structure of
the sound generation and transmission means of the portable terminal in the embodiment of the
present invention, the sound image, directivity and sound pressure of the sound of the sound
generation device can be appropriately adjusted.
[0019]
As mentioned above, although the voice generation and transmission means of the portable
terminal in the embodiment of the present invention have been described by taking the hands
free speaker as an example, the sound source used in the present invention is limited to the
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hands free speaker incorporated in the portable terminal It goes without saying that the present
invention may be applied to sound sources such as buzzers and ring tones, for example.
[0020]
Hereinafter, first to ninth embodiments of the present invention will be described in detail with
reference to FIGS.
First Embodiment First, the configuration of a portable terminal according to a first embodiment
of the present invention will be described with reference to FIG. In FIG. 1, the portable terminal
according to the present embodiment has a sound source 2 and a rear surface on the opposite
side to the front (voice main generation surface) side having the diaphragm 3 of the sound
source 2 from the storage unit 41 having a sound hole 51. There is provided a path 61 for
leading and passing the sound generated on the (other surface of the front) 5 through the sound
hole 51. The cushion sheet 4 plays the role of preventing the sound leakage of the sound on the
side of the main sound hole 7 or the entry of dust and dirt from the outside.
[0021]
Further, the main sound hole 7 is a hole for leading the sound generated on the front surface of
the diaphragm 3 of the sound source 2 from the case 8 to the outside. The auxiliary sound hole
91 is a hole for leading the sound generated on the back surface 5 of the diaphragm 3 of the
sound source 2 from the cover 10 to the outside through the path 61. In this example, the sub
sound hole 91 is provided in the cover 10 which forms a case on the back side of the diaphragm
3. The lid 11 is a lid for housing the sound source 2 in the storage portion 41. The sound guiding
tube 121 is a portion that forms the path 61. Further, a sound deriving structure is constituted
by the housing portion 41 having the sound hole 51, the sound guiding tube 121 constituting
the path 61, and the sub sound hole 91, and a sound generating device is constituted by the
sound source 2, the main sound hole 7 and the sound deriving structure Do. Hereinafter, the
configuration of the voice derivation structure and the voice generation device is the same in all
the embodiments.
[0022]
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7
Next, referring to FIG. 2 to FIG. 4, when the sound source 2 of the mobile phone as the mobile
terminal in the first embodiment of the present invention is, for example, a handsfree sound
source of a mobile phone having a handsfree function. The operation will be described. As shown
in FIG. 2, if the handsfree function is utilized in a state where the cellular phone is made to stand
on its own, the sound of the sub sound hole 91 is added to the sound of the main sound hole 7,
and hands free sound of higher sound pressure can be obtained. In addition, when the user hears
hands-free voice from the position on the cover 10 side, voice can be recognized with higher
sound pressure as compared with the conventional portable telephone without the sub sound
hole 91.
[0023]
Next, as shown in FIG. 3, with the mobile phone as the mobile terminal in the first embodiment of
the present invention, with the case 8 down and the cover 10 up, the main sound hole 7 side is
turned down. For example, the operation will be described for the case of placing on a tabletop.
In this case, since the voice on the side of the main sound hole 7 is attenuated but the voice on
the side of the sub sound hole 91 is directed to the user, the handsfree voice attenuates the
sound of the main sound hole 7 as the voice of the sub sound hole 91 It can be supplemented by
[0024]
Also, as shown in FIG. 4, when the mobile phone is placed on a table, for example, with the case 8
facing up and the cover 10 facing down and the sub sound hole 91 side facing down, the sub
sound is used as handsfree voice. It can be understood that although the sound emitted from the
hole 91 is attenuated, the sound from the main sound hole 7 side is emitted toward the user side,
so that the attenuation of the sound is covered.
[0025]
Second Embodiment Next, the configuration of a portable terminal according to a second
embodiment of the present invention will be described with reference to FIG.
In FIG. 5, the portable terminal in the present embodiment sounds the sound generated from the
storage unit 42 storing the sound source 2 and having the sound hole 52 on the back surface 5
opposite to the front side having the diaphragm 3 of the sound source 2. A path 62 is provided
for leading through and passing through the holes 52. The path 62 is formed by the sound
03-05-2019
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guiding tube 122, and extends in the side direction of the diaphragm 3 (the upper part in the
drawing of the storage portion 42). The cushion sheet 4 plays the role of preventing the sound
leakage of the sound on the side of the main sound hole 7 or the entry of dust, etc. from the
outside. The main sound hole 7 is a hole for leading the sound generated in the front of the
diaphragm 3 of the sound source 2 from the case 8 to the outside.
[0026]
Further, the auxiliary sound hole 92 is a hole for leading the sound generated on the back
surface 5 of the diaphragm 3 of the sound source 2 from the case 8 to the outside through the
path 62. In this example, the sub sound hole 92 is provided in the case 8 which forms a part of
the casing on the side of the diaphragm 3. The cover 10 is engaged with the case 8 to form a
housing. The lid 11 is a lid for housing the sound source 2 in the storage portion 43. In addition,
the housing portion 42 having the sound hole 52, the sound guiding tube 122 constituting the
path 62, and the sub sound hole 92 constitute an audio deriving structure.
[0027]
Next, referring to FIG. 6 to FIG. 9, when the sound source 2 of the mobile phone as the mobile
terminal in the second embodiment of the present invention is, for example, a handsfree sound
source of a mobile phone having a handsfree function. The operation will be described. As shown
in FIG. 6, if the handsfree function is used in a state where the cellular phone is made to stand on
its own, the sound of the sub sound hole 92 is added to the sound of the main sound hole 7, and
hands free sound of higher sound pressure can be obtained. Also, as shown in FIG. 7, when the
mobile phone is placed on the desktop, for example, with the main sound hole 7 side facing
down, the hands-free voice in the main sound hole 7 side is attenuated but the sub sound hole 92
Since the sound on the side is not blocked, the attenuation of the sound on the main sound hole 7
side can be compensated by the sound on the sub sound hole 92 side. Also, as shown in FIG. 8,
when the mobile phone is placed on the desktop with the main sound hole 7 facing upward, for
example, the hands-free voice also emits the sound emitted from the main sound hole 7 from the
sub sound hole 92 It can be seen that the speech is not attenuated, as neither of the resulting
speech is blocked.
[0028]
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9
In the second embodiment of the present invention, the sub sound hole 92 is blocked even when
the mobile phone is closed so as to close the main sound hole 7 and placed, for example, on the
desktop or when opened. I have not. Further, as shown in FIG. 9, it goes without saying that, for
example, the case where the sub sound hole 92-1 is provided on the top surface of the casing
and the sub sound hole 92-2 is provided on the side is also included in the scope of the present
embodiment. Yes.
[0029]
Third Embodiment Next, the configuration of a portable terminal according to a third
embodiment of the present invention will be described with reference to FIG. In FIG. 10, the
portable terminal in the present embodiment derives and passes through the sound generated on
the back surface 5 opposite to the front surface of the sound source 2 having the diaphragm 3
from the storage portion 43 for storing the sound source 2. Path 63 is provided. The path 63 is
formed by the sound guiding tube 123 and extends in the front side direction of the diaphragm
3. The cushion sheet 4 plays the role of preventing the sound leakage of the sound on the side of
the main sound hole 7 or the entry of dust, etc. from the outside. The main sound hole 7 is a hole
for leading the sound generated in the front of the diaphragm 3 of the sound source 2 from the
case 8 to the outside. The auxiliary sound hole 93 is a hole for leading the sound generated on
the back surface 5 of the diaphragm 3 of the sound source 2 from the case 8 to the outside
through the path 63. In this example, the sub sound hole 93 is provided on the surface on the
same side as the main sound hole 7 with respect to the diaphragm 3, that is, on the front surface
of the case 8 forming a part of the housing. The cover 10 is engaged with the case 8 to form a
housing. The lid 11 is a lid for housing the sound source 2 in the storage portion 43. Further, the
sound introducing structure is constituted by the sound introducing pipe 123 and the sub sound
hole 93 which constitute the storage part 43 and the path 63.
[0030]
Next, referring to FIG. 11, the case where the sound source 2 of the mobile phone as the mobile
terminal in the third embodiment of the present invention is, for example, a hands free sound
source of a mobile phone having a hands free function The operation will be described. As shown
in FIG. 11, if the handsfree function is used in a state in which the mobile phone is made to stand
on its own, the sound of the sub sound hole 93 is added to the sound of the main sound hole 7,
and hands free sound of higher sound pressure can be obtained. According to the portable
terminal of the third embodiment of the present invention, since the voice of the sub sound hole
93 is added to the voice of the main sound hole 7 and both have the same directivity, the hands
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free of sound pressure higher than that of the conventional structure. Needless to say that voice
can be obtained, even when compared to the mobile phones of the first and second
embodiments, when voice is heard from the side of the main sound hole 7, the first and second
embodiments will be described. Even higher sound pressure can be obtained than in the form of
mobile phone.
[0031]
Fourth Embodiment A portable terminal according to a fourth embodiment of the present
invention will now be described with reference to FIG. In FIG. 12, the portable terminal in the
present embodiment derives and passes through the sound generated on the back surface 5
opposite to the front surface of the sound source 2 having the diaphragm 3 from the storage unit
44 for storing the sound source 2. Path 64 is provided. The path 64 is formed by the sound
guiding tube 124, and is provided obliquely to the corner formed between the same side as the
main sound hole 7 (i.e., the front side of the case 8 on the case 8 side) and the upper surface side
of the case 8. . The cushion sheet 4 plays the role of preventing the sound leakage of the sound
on the side of the main sound hole 7 or the entry of dust, etc. from the outside.
[0032]
Further, the main sound hole 7 is a hole for leading the sound generated on the front surface of
the diaphragm 3 of the sound source 2 from the case 8 to the outside. The auxiliary sound hole
94 is a hole for leading the sound generated on the back surface 5 of the diaphragm 3 of the
sound source 2 from the case 8 to the outside through the path 64. In this example, the sub
sound hole 94 is provided obliquely to the corner formed between the same side as the main
sound hole 7 (that is, the front of the case 8 on the side of the case) and the upper surface side of
the case 8 It is provided obliquely as an exit of the path 64. The cover 10 is engaged with the
case 8 to form a housing. The lid 11 is a lid for housing the sound source 2 in the storage unit
44. In addition, the sound guiding structure is constituted by the housing portion 44, the sound
guiding tube 124 constituting the path 64 and the sub sound hole 94.
[0033]
In the portable terminal according to the fourth embodiment of the present invention, as
described in the description of the second embodiment and the third embodiment, the sub sound
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hole is not necessarily perpendicular to the main sound hole, and the back surface It can be
understood that even if it is not provided in the direction or the front direction, it may be
provided at an arbitrary angle. Even with such a configuration, it is possible to compromise the
second embodiment and the third embodiment described above so as to have an effect having
both effects.
[0034]
Fifth Embodiment A portable terminal according to a fifth embodiment of the present invention
will now be described with reference to FIG. In FIG. 13, the portable terminal in the present
embodiment is configured to sandwich the cushion 13 between the sound source 2 and the
storage unit 45 and to sandwich the cushion 14 between the storage unit 45 and the sound
guiding tube 125. Conventionally, a structure in which the cushion 4 is held between the side of
the sound source 2 on which the diaphragm 3 is provided and the housing is general. However,
the purpose of the cushion 4 in that case was to suppress sound leakage around the front of the
diaphragm and prevent the entry of dust and dirt. In the present embodiment, as a feature of the
present invention, the cushion 13 and the cushion 14 are provided on the side of the sub sound
hole 95 as one of the measures for effectively utilizing the sound from the sub sound hole 95. It
is needless to say that the cushion 13 and the cushion 14 can also serve as an intrusion
preventing effect of dust and dirt from the sub sound hole 95. Further, the cushions do not
necessarily have to be provided for both the cushions 13 and the cushions 14, and only one of
them may be provided if the performance is sufficient. Further, the other configuration is the
same as that shown in FIG. 1, and an audio lead-out structure is constituted by the housing
portion 45 having the sound hole 53, the sound guiding tube 125 constituting the path 65 and
the sub sound hole 95.
[0035]
In the fifth embodiment of the present invention shown in FIG. 13, the shape of the housing 45 is
the same as the housing 41 of the first embodiment, and the sub sound hole 95 is a vibration of
the sound source 2. Although it is provided on the back side of the plate 3, it is not particularly
limited to this position and arrangement, and it has been described as an example of the
embodiment in setting the cushion also on the side of the sub sound hole in this embodiment. is
there.
[0036]
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12
Sixth Embodiment Next, a portable terminal according to a sixth embodiment of the present
invention will be described with reference to FIG.
In FIG. 14, the storage portion 46 for storing the sound source 2 of the portable terminal in the
present embodiment is formed of a two-color molding structure of hard resin 15 and soft resin
16. The soft resin 16 of the storage portion 46 improves the adhesion between the storage
portion 46 and the sound source 2 or the storage portion 46 and the cover 10 to prevent the
sound leakage of the cushion 13 or 14 described in the fifth embodiment. It has the same effect
as the effect. Thereby, for example, the structure without using the cushion 13 or the cushion 14
shown in the fifth embodiment can be realized to reduce the number of parts, and the combined
structure of the cushion 13 or the cushion 14 and the soft resin 16 Effects such as high sound
leakage prevention measures, predetermined sound pressure securing, and predetermined sound
image securing can also be obtained. Further, the other configuration is the same as that shown
in FIG. 1, and the sound hole, the sound guide tube 125 and the sub sound hole 195 constitute
an audio deriving structure. Further, the other configuration is the same as that shown in FIG. 1,
and an audio lead-out structure is constituted by the housing portion 46 having the sound hole
54, the sound guiding tube 126 constituting the path 66 and the sub sound hole 96.
[0037]
In the sixth embodiment of the present invention shown in FIG. 14, the shape of the storage
portion 46 is shown according to the storage portion 41 of the first embodiment, and the sub
sound hole 96 is a diaphragm 3 of the sound source 2. However, the present invention is not
limited to this particular position and arrangement.
[0038]
Seventh Embodiment Next, a portable terminal according to a seventh embodiment of the present
invention will be described with reference to FIG.
In FIG. 15, the portable terminal in the present embodiment is provided with an electromagnetic
shield 17 and an electromagnetic shield 18 each having an electromagnetic shielding effect on a
path 67 inside the housing portion 47 and the sound guide tube 127. As means for imparting an
electromagnetic shielding effect, metal deposition may be applied, metal coating may be applied,
or only the storage portion 47 may be a separate part made of metal, and the means is
particularly limited. is not. Further, as described above, the voice deriving structure of the
portable terminal according to the embodiment of the present invention is a structure that covers
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a part or all of the sound source functionally, and the electromagnetic shield 17 and the
electromagnetic shield 18 according to the present embodiment. As a result, it is possible to
easily provide a structure for electromagnetically shielding the sound source 2 at the same time
while deriving the sub sound, and to suppress the influence of the electromagnetic noise that the
sound source 2 exerts on the inside and outside of the sound generating device. Further, the
other configuration is the same as that shown in FIG. 1, and an audio lead-out structure is
constituted by the housing portion 47 having the sound hole 55, the sound guide tube 127
constituting the path 67 and the sub sound hole 97.
[0039]
The shape of the storage portion 47 shown in FIG. 15 conforms to the storage portion 41 in the
first embodiment of the present invention described above, and the storage portion 47 shown in
FIG. Although the sub sound hole 97 is provided on the back side of the diaphragm 3 of the
sound source 2 as an example, it is not particularly limited to this arrangement.
[0040]
As described above, the hands-free sound source of the mobile phone has been described as an
example of the mobile terminal in the first to seventh embodiments of the present invention, but
the scope of the present invention is not limited to the hands-free sound source of the mobile
phone. Needless to say.
For example, the embodiment of the present invention can be used for a PHS, hands-free sound
source of a household telephone or a wireless device, or a buzzer sound source or a ringing tone
sound source.
[0041]
Eighth Embodiment Next, a portable terminal according to an eighth embodiment of the present
invention will be described with reference to FIG. In FIG. 16, the mobile phone in the present
embodiment is provided with a holder 19 as a structure for guiding voice to the sub sound hole
98. The holder 19 is obtained by integrating the back cover of the storage unit for storing the
sound source with the sound guide tube 128. In this embodiment, the holder 19 having the
sound guide tube 128 and the sub sound hole 98 constitute an audio deriving structure.
03-05-2019
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[0042]
Ninth Embodiment Next, a portable terminal according to a ninth embodiment of the present
invention will be described with reference to FIG. In FIG. 17, in the mobile phone in the present
embodiment, the sound source 2 is installed in a form mounted on the substrate 20, the
substrate hole 21 is opened in the substrate 20 below the sound source 2, and the voice is
derived to the sub sound hole 99. It is intended to Further, the other configuration is the same as
that shown in FIG. 1, and the sound lead-out structure is constituted by the substrate 20 having
the substrate hole 21, the sound guide tube 129 and the sub sound hole 99.
[0043]
In the present invention, in addition to the main sound hole for extracting the sound from the
sound source built in the portable terminal to the outside of the casing, further, the sub sound
hole for extracting the sound from the other surface of the sound source So configured. That is,
for the sub sound hole, the attenuation of the sound pressure of the main sound is compensated
by guiding the sound from the surface other than the front of the diaphragm, or the sound image
and directivity of the sound are changed. . As described above, the embodiment of the present
invention is merely an example of the means for embodying the present invention.
[0044]
Also, it goes without saying that one or more sub-sound holes may be provided for guiding subsounds provided in the portable terminal. When a plurality of sub sound holes are provided, the
directions of the sub sound holes provided may be a combination of different directions such as
the back surface, the side surface, and the oblique direction.
[0045]
The portable terminal according to the present invention is configured as described above, and in
particular, the sub-sound hole of the casing is the sound emitted from the surface other than the
front of the diaphragm which is the main sound generation surface of the sound source, for
example, the back surface. By providing an audio lead-out structure to be released from the
housing to the outside of the case, it is possible to further improve the sound image, directivity
and sound pressure of the obtained sound with flexibility, and at the same time suppress
03-05-2019
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electromagnetic noise generated from the sound source. It is possible to provide an excellent
mobile terminal.
[0046]
Brief description of the drawings
[0047]
1 is a cross-sectional view showing the configuration of a portable terminal according to the first
embodiment of the present invention,
[0048]
As a portable terminal in the first embodiment of the present invention, a cross-sectional view of
a mobile phone incorporating a hands-free sound source, and in a self-supporting state,
[0049]
3 is a cross-sectional view of a state where the main sound hole is turned down and embodied as
a mobile terminal according to the first embodiment of the present invention as a mobile phone
incorporating a hands-free sound source.
[0050]
As a portable terminal in the first embodiment of the present invention, it is embodied in a
mobile phone incorporating a hands-free sound source, and a cross-sectional view of a state in
which the main sound hole is turned upside down,
[0051]
5 is a cross-sectional view showing the configuration of a portable terminal according to the
second embodiment of the present invention,
[0052]
6 is a cross-sectional view of a mobile phone incorporating a hands-free sound source as a
mobile terminal according to the second embodiment of the present invention, in a state of being
self-supporting;
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[0053]
7 is a cross-sectional view of a state where the main sound hole is turned down and embodied as
a mobile terminal according to the second embodiment of the present invention as a mobile
phone incorporating a hands-free sound source.
[0054]
8 is a cross-sectional view of a state where the main sound hole is turned over and embodied as a
mobile terminal according to the second embodiment of the present invention as a mobile phone
incorporating a hands-free sound source.
[0055]
As a portable terminal in the second embodiment of the present invention, it is embodied in a
portable telephone incorporating a hands-free sound source, and a cross-sectional view in a state
in which two sub sound holes are provided and made independent.
[0056]
10 is a cross-sectional view showing the configuration of a portable terminal according to the
third embodiment of the present invention,
[0057]
11 is a cross-sectional view of a mobile phone incorporating a hands-free sound source as a
mobile terminal according to the third embodiment of the present invention, and in a state in
which the mobile phone is made independent;
[0058]
12 is a cross-sectional view showing a configuration of a portable terminal in the fourth
embodiment of the present invention,
[0059]
13 is a cross-sectional view showing the configuration of a portable terminal according to the
fifth embodiment of the present invention;
[0060]
14 is a cross-sectional view showing the configuration of a portable terminal according to the
03-05-2019
17
sixth embodiment of the present invention,
[0061]
15 is a cross-sectional view showing the configuration of a portable terminal according to the
seventh embodiment of the present invention,
[0062]
16 is a cross-sectional view showing a configuration of a portable terminal in the eighth
embodiment of the present invention,
[0063]
17 is a cross-sectional view showing a configuration of a portable terminal according to the ninth
embodiment of the present invention,
[0064]
18 is a perspective view showing an example of the appearance of a conventional portable
terminal,
[0065]
19 is a cross-sectional view showing an example of the structure around the sound source unit of
the conventional portable terminal.
[0066]
Explanation of sign
[0067]
Reference Signs List 2 sound source 3 diaphragm 4 cushion sheet 5 on the main sound hole side
5 back surface 7 main sound hole 8 case 10 cover 11 lid 13 cushion on the sub sound hole side
(between the storage portion and the sound source) 14 cushion on the sub sound hole side
(between the storage portion and the cover ) 15 hard resin 16 soft resin 17 electromagnetic
shield 18 of the storage section electromagnetic shield 19 of the path 19 holder 20 substrate 21
substrate hole 30 the first sound hole 31 of the conventional portable terminal 31 the second
sound hole 32 of the conventional portable terminal Portable terminal sound source 33
Conventional portable terminal casing 34 Conventional portable terminal cushions 41, 42, 43,
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44, 45, 46, 47 Storage parts 51, 52, 53, 54, 55 Sound holes 61, 62, 63 , 64, 65 Path 91, 92, 921, 92-2, 93 Sub sound hole 94 95, 96, 97, 98, 99 Sub sound hole 121, 122, 123, 124, 125
Sound guide tube 126, 27,128,129 sound guides
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