close

Вход

Забыли?

вход по аккаунту

JP2004128571

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2004128571
A speaker in a portable mobile communication device can be disposed at an appropriate position
in relation to other parts, and an output from the speaker at a required sound emission position
in consideration of space efficiency in the portable mobile communication device. The sound can
be guided and the speaker can be miniaturized. In a portable mobile communication device (1)
including an antenna (2) and a speaker (3), a horn-like space formed by an inner wall (30) is
formed along an antenna housing part (4). 3 were arranged, and a sound outlet 31 was formed at
the open end 30. [Selected figure] Figure 1
Portable mobile communication device
FIELD OF THE INVENTION The present invention relates to portable mobile communication
devices. [0002] Portable mobile communication devices are widely used as portable telephones,
personal digital assistants (PDAs), portable navigation devices, portable radios, portable
televisions, and the like. This portable type mobile communication device is provided with an
antenna since it basically has to perform wireless communication, and is provided with an
antenna storage portion in order to store the antenna in the device when not in use or in standby
for reception. . In addition, this type of portable mobile communication device is provided with a
speaker for outputting a ringtone or received information as a sound. In such portable mobile
communication devices, reduction in the size and weight of the device is a major issue in order to
improve portability, but the problem is that the space occupied by the speaker is large in the
space inside the device. It is considered that this space problem is solved by devising the
arrangement of the speakers. For example, in patent document 1 shown below, space saving is
attained in the longitudinal direction of an apparatus by arranging a speaker in piles on the back
of a display part, and the sound outputted from this speaker is required via a sound conduction
part. It has been proposed to lead to a sound emission position. However, according to the prior
02-05-2019
1
art as described above, space saving can be achieved in the longitudinal direction of the device.
However, the thickness of the device will increase and it is not an essential solution. In addition,
while the sound guiding portion is configured to guide the sound, since the propagation
characteristic of the sound guiding portion is not devised at all, a loss of sound may occur in the
propagation process and the sound emission may be lowered. In order to do this, there is a
problem that the size of the speaker needs to be increased. Further, although the sound guide
unit is a space for transmitting sound, there is also a problem that the space efficiency in the
device is reduced by providing such a space in the device. The present invention takes as an
example an issue to address such a problem. That is, the speaker in the portable mobile
communication device can be disposed at an appropriate position in relation to other parts, and
the output sound from the speaker at the required sound emitting position taking into
consideration the space efficiency in the portable mobile communication device It is an object of
the present invention to be able to guide the speaker and to miniaturize the speaker. SUMMARY
OF THE INVENTION In order to achieve such an object, a portable mobile communication device
according to the present invention comprises at least the features according to the following
independent claims.
According to the invention according to claim 1, in the portable mobile communication device
provided with an antenna storage portion and a speaker, the cross section gradually increases
from the input end toward the open end along the antenna storage portion. A horn-like space is
formed, and the speaker is disposed at an input end of the horn-like space. BEST MODE FOR
CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be
described. First, in a portable mobile communication device provided with an antenna storage
portion and a speaker, along the antenna storage portion, the cross section gradually becomes
from the input end where the speaker is disposed toward the open end where the sound output
port is disposed. Form a horn-like space that According to this, since the output sound from the
speaker is guided to the sound emission port through the horn-like space, the arrangement of the
speaker can be arranged at a position where interference with other parts is small. In addition,
since the sound is transmitted along the horn-like space whose cross section gradually increases
from the input end toward the open end and is guided to the sound emission port, it becomes
possible to improve the efficiency of the speaker, thereby making the speaker Can be
miniaturized, power input can be reduced, and power consumption can be reduced. In addition,
since the horn-like space is formed along the antenna housing portion, the area around the
antenna housing portion that has conventionally formed the space can be effectively utilized, and
the space efficiency in the portable mobile communication device is reduced. I will not let you.
Second, in the above-mentioned portable mobile communication device, the throat partial
opening area at the input end of the horn-like space is smaller than the effective vibration area of
the speaker disposed there. According to this, since it is possible to squeeze the throat portion of
the input end and input the sound into the horn-like space, the efficiency of the speaker can be
remarkably improved. By this, in addition to the above-mentioned operation, further downsizing
02-05-2019
2
of the speaker, saving of power input, reduction of power consumption and the like can be
achieved. Third, in the portable mobile communication device described above, a sliding portion
for slidably housing the antenna is provided in the antenna housing portion, and the sliding
portion is in the direction of sound propagation in the horn-like space. It is characterized in that
they are arranged substantially parallel to each other. According to this, the horn-like space has a
length corresponding to the sliding part, and the sliding part is disposed perpendicularly to the
cross-section of the horn-like space, so that the sliding part generates sound. Can be minimized.
Therefore, in addition to the above-mentioned operation, the effect of the horn can be obtained
surely and the sound from the speaker can be effectively transmitted.
Fourthly, in the portable mobile communication device described above, the antenna has a rod
antenna portion, and the sliding portion is made of a pipe which slidably accommodates the rod
antenna portion. . This embodiment further embodies the third embodiment, in which the length
of the horn-like space corresponding to the length of the rod antenna can be secured, and the
pipe is disposed perpendicularly to the cross-section of the horn-like space By doing this, it is
possible to minimize that the sliding part becomes an obstacle to the transmission of sound, and
the effect of the horn can be reliably obtained and the sound from the speaker can be effectively
transmitted as in the above-mentioned operation. can do. Fifth, the sliding portion is disposed in
the horn-like space so as to be separated from the inner wall of the space, and sixthly, the sliding
portion is the horn-like space. It is characterized in that it is disposed in contact with the inner
wall of the space or is formed integrally with the inner wall. According to these features, since a
space effective for sound propagation is secured in the horn-like space, the sound from the
speaker can be effectively transmitted as in the above-described operation. Embodiments of the
present invention will be described below with reference to the drawings. What is described
below is one embodiment of the present invention, and the present invention is not limited
thereto. FIG. 1 is an explanatory view showing the entire configuration of a portable mobile
communication device according to an embodiment of the present invention, wherein FIG. 1 (a) is
a front partial sectional view and FIG. 1 (b) is a side partial sectional view The same figure (c) has
shown the top view. The portable mobile communication device 1 is provided with an antenna 2
and a speaker 3. Further, the portable mobile communication device 1 is formed with an antenna
storage portion 4 for storing the antenna 2 when not in use or in standby for reception. Here, the
antenna 2 includes a coil antenna portion 21 formed in the antenna top 20 and a rod antenna
portion 23 extending to the base end side through the insulating connection portion 22. The coil
antenna portion 21 or the rod antenna portion Contact terminal portions 21a and 23a are
provided at proximal end portions of the electrodes 23, respectively. A holder 24 which also
serves as a contact terminal is provided above the antenna housing 4. When not in use or in
standby for reception, the contact terminal of the coil antenna 21 as shown in FIG. 21a is locked
in the holder portion 24, and when receiving information, the antenna 2 is pulled out and the
contact terminal portion 23a of the rod antenna portion 23 is locked to the holder portion 24.
02-05-2019
3
In addition, the antenna housing portion 4 is provided with a sliding pipe 25 serving as a sliding
portion for slidably housing the antenna 2 so that the housing or drawing of the antenna 2 can
be guided along the sliding pipe. I have to. A horn-like space is formed by the inner wall 30 along
such an antenna storage unit 2. That is, the horn-like space is formed to be used as the space
around the antenna storage unit 4. The horn-like space is formed so that the cross section
gradually increases from the input end 30a toward the open end 30b, and the speaker 3 is
formed at a position facing the input end 30a and at a position facing the open end 30a. A sound
outlet 31 is formed. FIG. 2 is an explanatory view for explaining a cross section of the abovementioned horn-like space. 1 (a) is an a1-a2 sectional view in FIG. 1, FIG. 1 (b) is a b1-b2
sectional view in FIG. 1, FIG. 1 (c) is a c1-c2 sectional view in FIG. 1, FIG. 1 shows a d1-d2
sectional view in FIG. 1, and FIG. 1 (e) shows an e1-e2 sectional view in FIG. As apparent from
these figures, the horn-like space is formed so as to gradually increase in area from the input end
30a to the output end 30b. The cross-sectional shape is circular in the vicinity of the input end
30a in the example of the figure (see (e) in the figure) and gradually expands into a rectangle, but
the invention is not limited thereto. The shape may be various, such as one that is enlarged, or
one that is gradually enlarged in the shape of a quadrangle or a triangle. By enlarging this crosssectional shape flatly, it is possible to prevent the thickness of the portable mobile
communication device 1 from increasing. Further, in this embodiment, the rod antenna portion
23 of the antenna 2 and the sliding pipe 25 disposed in the horn-like space formed by the inner
wall 30 are spaced apart from the inner wall 30, and , Is arranged substantially parallel to the
sound propagation direction in the horn-like space. FIG. 3 is an explanatory view showing the
structure of the input end 30 a in the horn-like space formed by the inner wall 30. In this
embodiment, the input end 30a is provided with a throat portion 30a1, and the opening area So
of the throat portion 30a1 is formed smaller than the effective vibration area Se of the speaker 3.
As a result, the sound output from the speaker 3 is once narrowed at the throat portion and
emitted to the horn-like space. Here, when the density of air is ρ and the speed of sound is c, the
mechanical impedance Zo at the throat portion 30a1 is expressed by Formula (1).
Moreover, the load impedance Ze to the diaphragm of area Se becomes Formula (2). Here, by
setting So <Se, the load impedance Ze becomes large, and the conversion efficiency can be
improved. Zo = こ の cSo (1) (2) Ze = ρcSo (Se / So) <2> (2) According to this embodiment, the
lower side of the portable mobile communication device 1 is obtained. The output sound from
the speaker 3 disposed at the position is input from the input end 30a into the horn-like space
through the throat portion 30a1. Then, the input output sound propagates in the horn-like space
formed around the sliding pipe 25 and is emitted from the sound emission port 31 formed in the
opening end 30 b. Therefore, the output sound subjected to high efficiency conversion in the
throat portion is efficiently propagated in the horn-like space and emitted from the open end
whose cross section is enlarged, so that the area is substantially enlarged. An effect equivalent to
that obtained by arranging a speaker provided with the diaphragm of the above in the open end
02-05-2019
4
position is obtained. In addition, since a horn-like space is formed along the sliding pipe 25 of the
antenna housing portion 4, it is possible to form a horn having an effective length corresponding
to the length of the sliding pipe. FIG. 4 and FIG. 5 are explanatory views showing another
embodiment of the present invention and correspond to FIG. 2 (b) described above. In the
embodiment of FIG. 4, the sliding pipe 25 is disposed in contact with the inner wall 30, and in the
embodiment of FIG. 5, the portion 25A corresponding to the sliding pipe is formed integrally
with the inner wall 30. Also in these embodiments, since a horn-like space is formed along the
antenna housing 4 as in the above-described embodiments, an effective horn length can be
obtained, and the efficiency of the speaker can be improved. . Each embodiment of the present
invention as described above can achieve the following effects. That is, since the output sound
from the speaker 3 is guided to the sound emission port 31 through the horn-like space, the
arrangement of the speaker 3 can be arranged at the lower position of the apparatus with less
interference with other parts. Further, since the sound is transmitted along the horn-like space
whose cross section gradually increases from the input end 30a to the open end 30b and is
guided to the sound emission port 31, the efficiency of the speaker 3 can be improved. As a
result, downsizing of the speaker 3, power saving of power input, reduction of power
consumption, and the like are possible. In addition, since the horn-like space is formed along the
antenna storage unit 4, the area around the antenna storage unit that has conventionally formed
a space can be effectively utilized, and the space efficiency in the portable mobile communication
device 1 can be achieved. There is no reduction in
Furthermore, since the acoustic load greatly affects the diaphragm of the speaker 2 due to the
presence of the horn-like space and the throat portion, the secondary effect is obtained that the
amplitude is suppressed and failure such as disconnection can be reduced. BRIEF DESCRIPTION
OF THE DRAWINGS FIG. 1 is an explanatory view showing an entire configuration of a portable
mobile communication device according to an embodiment of the present invention. FIG. 2 is an
explanatory view illustrating a cross section of a horn-like space in a portable mobile
communication device according to an embodiment of the present invention. FIG. 3 is an
explanatory view showing an input end structure of a horn-like space formed by an inner wall in
a portable mobile communication device according to an embodiment of the present invention.
FIG. 4 is an explanatory view showing another embodiment of the present invention. FIG. 5 is an
explanatory view showing another embodiment of the present invention. <Explanation of mark>
1 portable type mobile communication equipment 2 antenna 20 antenna top 21 coil antenna
section 22 insulation joint section 23 rod antenna section 24 holder section 25 sliding pipe 3
speaker 30 inner wall 30a input end 30a1 throat part 30b open end 31 release Sound opening 4
antenna storing part
02-05-2019
5
1/--страниц
Пожаловаться на содержимое документа