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JP2017069886

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DESCRIPTION JP2017069886
Abstract: In an electronic device having a display unit housing and a main body supportably
supported by a hinge mechanism so as to be able to open and close and having a speaker on the
back of the main body housing, a complicated mechanism is not required and the display unit
housing is open Reduce the difference between sounds with the display unit closed. SOLUTION: A
first sound emission port 301 for emitting a sound emitted from the speaker is added to the front
of the speaker in a first housing 3 provided with a speaker 6 and a second sound emission port
302 is left. It was provided at the position. In addition to the first opening, the speaker holding
member for holding the speaker forms an opening or a sound path following the second sound
emission port, and the sound path opening / closing member for the sound path halfway to the
second sound emission port Set 18 The sound path opening / closing member opens / closes the
path to the second sound emission opening interlocking with the opening / closing operation of
the display housing 2, and the sound path opening / closing member emits the second sound
when the display housing is open. The path to the mouth is closed, and the sound path opening /
closing member opens the path to the second sound emission port when the display housing is
closed. [Selected figure] Figure 10
Electronics
[0001]
The present invention relates to an electronic device that supports a first case and a second case
so as to be able to open and close by a hinge mechanism, and in particular, has a configuration in
which a speaker opening provided in the first case is covered by a second case. It relates to the
equipment.
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[0002]
Conventionally, in an electronic apparatus such as a digital camera or a video camera, an
electronic apparatus having a so-called vari-angle type or tilt type image display section provided
with an image display section rotatably attached to the apparatus main body by a hinge
mechanism. Equipment is widespread.
[0003]
For example, in an imaging apparatus having a two-axis vari-angle type image display unit, the
image display unit can be rotated to any angle with the image display unit opened horizontally so
that shooting can be performed while checking the subject at various angles. It is.
Even in the case of an imaging apparatus having a 1-axis tilt type image display unit, the image
display unit can be rotated to various angles although it is in one direction, and shooting can be
similarly performed while checking the subject at various angles it can.
[0004]
Patent Document 1 includes a display unit housing provided with an image display unit, a main
unit housing provided with an imaging unit, and a hinge unit connecting the respective units, and
the hinge unit includes a display housing and a main unit housing. A digital camera is described
which is a two-axis hinge which is open / close and rotatably connected.
[0005]
Further, in electronic devices such as digital cameras and video cameras, there is a tendency for
downsizing and thinning in order to improve portability.
While devices that have a touch panel type operation unit mounted on the image display unit are
increasing, and downsizing is desired, the image display unit is as large as possible in order to
improve the operability of touch operation and secure the display area at the time of shooting.
Need to size.
[0006]
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In addition, although there is a tendency for the operation buttons provided on the main body
surface to be reduced by the touch panel, the physical button is more reliable for the transition
from the shooting state to the playback state and for the switch to a specific mode. It is possible
to select before starting up, and it is better to leave the minimum necessary items rather than
eliminating all.
[0007]
When priority is given to downsizing of the main body and securing of the image display unit, an
imaging device mounted with a single-axis tilt type in which the space occupied by the hinge
mechanism in the main body is small is suitable.
[0008]
FIG. 12 shows a configuration using a single-axis tilt hinge.
As described above, priority is given to downsizing of the digital camera and securing of the
image display unit, and an example of a configuration in which necessary operation members
and mounting components are laid out is shown.
FIG. 12 (a) is a perspective view from the front of the state where the display unit housing 122 is
closed, and FIG. 12 (b) is a perspective view from the rear when the display unit housing 122 is
closed. 12 shows a state in which the display unit housing 122 is tilted approximately 90 degrees
from the state of FIG.
As a result of miniaturizing the main body as shown in FIG. 12B, the display housing 122 has a
minimum size determined by operability, and the projection area of the main housing 123 is
equal to that of the display housing 122 or a hinge portion thereof It becomes the size which
added the restriction of. The back side of the digital camera 121 is occupied by the image display
unit, and other operation buttons and the like can not be arranged.
[0009]
Furthermore, in the main body housing 123, it is necessary to efficiently store components such
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as a lens barrel, a battery, mounting components, and an operation member. In the digital
camera, the position of the operation unit is important, and as a result of giving priority to
operability, as shown in FIG. The operation member is not placed considering that the upper
surface 123a of the main body is difficult to operate when the display housing 122 is tilted 180
degrees, and there is only the microphone hole 126, and mounted parts such as cables are on the
upper surface inside the main body Be laid out.
[0010]
In addition, when considering the layout, it is difficult to place the speaker 127 on the side of the
main body because it is relatively large and thick. Considering the space left inside the main body
and the place where it can be opened to the outside, the position with good space efficiency is
the back of the main body as shown by the speaker sound outlet 123b in FIG. 12 (c).
[0011]
A configuration example in which the layout is efficiently performed will be described in detail
later in this embodiment.
[0012]
As shown in FIG. 12C, the speaker sound emission port 123b is exposed only when the display
unit housing 122 is tilted, and a gap is provided between the display unit housing 122 and the
main body housing 123, thereby displaying the display unit housing 122. Even in the closed
state, the sound of the speaker 127 can reach the user.
[0013]
FIG. 13 is a cross-sectional view cut along a line C-C in FIG. 12C, and shows the speaker 127 and
the speaker holding member 131 assembled to the main body housing 123.
[0014]
The speaker 127 is fixed to the back cover 123c of the main body 123 in a charged state via the
cushion 132 and the dustproof sheet 133, and is fixed to the speaker holding member with the
double-sided tape 134 so as to prevent rattle in the vertical direction. .
[0015]
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In general, in order to stabilize the sound characteristics of the speaker 127, it is desirable that
the sound of the speaker holding member 131 be emitted from the front of the speaker 127
without opening the back of the speaker 127 as much as possible.
By pressing the speaker 127 against the back cover 123c, the sound is reliably output from the
opening 123b.
[0016]
There is also a method as disclosed in Patent Document 2 in which a speaker is provided on the
display unit side when the speaker can not be provided on the main body side.
However, since it is necessary to further reduce the size of the display unit as much as possible in
order to miniaturize the main body, the button displayed on the screen becomes smaller when
operating with the touch panel, or the displayed image during shooting becomes difficult to view
There was a risk of decline.
[0017]
JP, 2012-105069, A Patent No. 4322955
[0018]
However, since the gap between the main housing 123 and the display housing 122 is set as
small as possible for downsizing and thinning, when the display housing 122 is closed, the sound
volume coming out of the clearance with the main housing 123 is at the minimum necessary. It
is.
On the other hand, when the display housing 122 is opened, the sound emitted from the speaker
127 is amplified by the display housing 122 in the specific direction on the back of the display
housing 122 with the same effect as the horn.
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Therefore, there is a problem that the method of hearing the sound to the user is largely different
between when the display unit housing 122 is closed and when the display unit housing 122 is
opened.
[0019]
When the display unit housing 122 is open, the sound is heard in a large well-balanced manner,
but when the display unit housing 122 is closed, it is smaller than when the display unit housing
122 is opened, and it is difficult to hear middle bass sound.
[0020]
Therefore, according to the present invention, in the electronic device having the display unit
casing and the main body casing openably and closably supported by the hinge mechanism and
having a speaker on the back of the main body casing, the display unit casing is opened without
requiring a complicated mechanism. The purpose is to reduce the difference between the state
and the sound of the state in which the display unit is closed.
[0021]
In order to achieve the above object, the electronic device of the invention according to claim 1
comprises a hinge unit supporting the first housing, the second housing, the first housing and the
second housing so as to be able to open and close. And a speaker disposed at a position covered
by the second housing in a state in which the hinge unit in the first housing is closed, and a
speaker holding member for holding the speaker, the first housing having Two sound outlets are
provided for emitting the sound emitted from the speaker, the first sound outlet is provided in
front of the speaker, and the second sound outlet is provided at other distant positions, In
addition to the first sound outlet, the speaker holding member is formed with an opening or a
sound path continuing to the second sound outlet, and a sound path opening / closing member is
provided between the speaker and the second sound outlet. And the sound path opening /
closing member emits a second sound in synchronization with the opening / closing operation of
the hinge unit When the hinge unit is open, the sound path opening / closing member closes the
path to the second sound outlet, and when the hinge unit is closed, the sound path opening /
closing member emits the second sound. It is characterized in that the route to the mouth is
open.
[0022]
An electronic device according to a second aspect of the present invention is the electronic
device according to the first aspect, wherein the sound path opening / closing member is formed
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of an elastically deformable plate member, and the plate member has one end fixed to the
speaker holding member And the tip of the plate is in a position where it can abut against a part
of the hinge unit rotation part in the vicinity of the second outlet, and the tip of the plate is It is
characterized in that the path to the second sound emission port is opened and closed by being
elastically deformed by a part of the hinge unit rotation part.
[0023]
An electronic device according to a third aspect of the present invention is the electronic device
according to the first aspect, wherein the second sound output port is in the vicinity of the hinge
unit pivot axis of the first housing and escapes the hinge unit pivot range. The opening is used as
a sound outlet.
[0024]
According to the present invention, the second sound output port is provided separately from the
front of the speaker as the sound output port for passing the sound emitted from the speaker,
and the path to the second sound output port is interlocked with the rotation of the hinge unit. It
is possible to reduce the difference in volume between the open state and the closed state by
opening or closing, and to provide an electronic device in which a speaker is provided on the
inside of a housing that is opened and closed by the hinge for downsizing.
[0025]
The external appearance perspective view which showed the imaging device which is
embodiment which concerns on this invention The perspective view which shows the state which
open | released the display part housing of the imaging device which is embodiment which
concerns on this invention It is embodiment which concerns on this invention A front view and a
side view showing an internal structure of an imaging device A front developed view showing a
component of an imaging device according to an embodiment of the present invention A
perspective view showing a hinge unit of the imaging device according to an embodiment of the
present invention The perspective view which shows the mounting components layout of the
imaging device which is embodiment which concerns on invention The board | substrate of the
imaging device which is embodiment which concerns on this invention, the layout of a speaker,
exploded perspective view which shows layer structure A speaker holding member, a speaker,
and an exploded perspective view showing the shape of the base member, the base member, the
sound path opening / closing member, and the hinge unit according to the embodiment of the
present invention; An exploded perspective view showing a relationship A cross-sectional view
showing a sound emission path of a speaker and an opening / closing operation of the path
according to an embodiment of the present invention In general, an imaging apparatus having a
hinge unit and performing a miniaturized layout Perspective view Cross section showing how to
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hold and fix a typical speaker
[0026]
Hereinafter, preferred embodiments of the present invention will be described in detail with
reference to the attached drawings.
[0027]
FIG. 1 is an external perspective view showing a configuration example of an imaging device
(digital camera), and FIG. 1A is an external perspective view as viewed from the front side, and
FIG. 1B is an external perspective as viewed from the rear side FIG.
[0028]
The digital camera 1 includes a display unit case 2 (second case) having a display panel 5, a main
case 3 (first case) on the camera body side, a display unit case 2 and a main case It consists of a
hinge part which connects three.
[0029]
The display panel 5 is equipped with an electrostatic touch panel. The operation panel is
displayed on the display panel, and the function can be switched by touching a position
corresponding to the displayed button.
[0030]
By touch operation, it is also possible to perform selection of an object, shutter release operation,
zoom in and zoom out operations.
[0031]
FIG. 2 is a perspective view showing the display unit casing 2 in the direction shown by the
arrow A with respect to the main unit casing 3.
[0032]
The hinge 4 has a hinge mechanism of one axis, and the display housing 2 is supported so as to
be openable and closable relative to the main housing 3.
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In the present embodiment, the movement of the display unit case 2 with respect to the main
unit case 3 is an opening and closing operation, but either of the display unit case 2 and the main
unit case 3 may be used as a reference. 2 and the main body case 3 may be opened and closed
relative to each other.
[0033]
Since the photographer can freely change the angle of the display unit case 2 with respect to the
main unit case 3 according to the camera angle, it is suitable for various situations.
As shown in FIG. 2A, when the hinge portion opens on the upper side of the main body, it is in a
state suitable for low angle shooting for shooting an object at a low position.
Conversely, when shooting a high-angle shooting subject looking down from a high position, as
shown in FIG. 2 (b), it can be coped with by holding the main body housing 3 upside down so
that the hinge portion is located below the main body .
[0034]
By connecting the main unit housing 3 and the display unit housing 2 by the hinge unit 4, the
photographer can freely change the angle of the display unit housing 2 with respect to the main
unit housing 3 according to the posture for shooting. You can shoot while constantly checking
the subject even at low or high angles.
Since the rotary shaft of the tilt type hinge unit 4 is provided inside the main body 3, the opening
302 which escapes the storage and rotation range of the hinge unit 4 is required.
[0035]
Similar to the configuration described in the background art, the speaker body 301 is provided
with a speaker outlet 301 on the back of the main body by downsizing and thinning of the main
body, and the internal configuration will be described later.
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[0036]
An internal layout of the main body 3 of the present embodiment will be described with
reference to FIG.
FIG. 3A is a view showing the appearance of the main body 3 as viewed from the front, and FIG.
3B shows the layout of components inside the main body as viewed from the front.
FIG. 3C shows the internal layout as viewed from the right side of the main body.
[0037]
Since the digital camera 1 corresponds to a high angle and a low angle with a single axis tilt, the
lens barrel unit 7 is disposed at the center of the main body 3 on the assumption that it can be
held upside down, and there is space left and right. Therefore, the battery 8 is disposed on the
right side, and the substrates 9 are disposed on the left side.
[0038]
As can be seen from FIG. 3C, when trying to miniaturize and thin the main body as much as
possible, there is a trade-off between the projected area from the front and the thickness of the
main body, and when the projected area from the front is reduced, the main body thickness is the
battery The thickness of 8 becomes dominant.
[0039]
In the present embodiment, in order to make the total thickness as a digital camera as thin as
possible, the battery storage portion of the main body casing 3 has a convex shape (3a) as shown
in FIG. 2 and the display portion casing 2 has a concave shape 2a), and use the empty space of
the display unit 2 as well.
[0040]
FIG. 4 is an exploded view of the components for better understanding.
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[0041]
The lens barrel unit 7, the battery 8, the substrates 9, the upper flexible cable 10 and the hinge
unit 4 to which all of these components are assembled are shown.
On the upper flexible cable 10, a microphone 10a, an LED light 10b, a battery terminal 10c, and
a connector portion 10d of a cable drawn from the display unit casing 2 are mounted.
The hinge portion of the hinge unit 4 is laid out toward the back of the upper surface of the main
housing 3, and the cable 407 assembled on the display housing side overlies the shaft 404 of the
hinge unit 4 at the center of the upper surface of the main housing 3. It is connected to the
flexible cable 10.
[0042]
FIG. 5 is a perspective view showing the hinge unit 4 in the open state.
[0043]
In the hinge unit 4, the main body frame 402 and the display unit frame 403 are rotatably
supported by the shaft 404, and the shaft 404 and the display unit frame 403 are fixed by the
weld portion 405. The rotating shaft 404 integrally rotates.
The rotating shaft 404 is sandwiched by the torque generating mechanism 406 in order to hold
the display unit frame 403 at an arbitrary angle.
[0044]
Abutment parts 403a are provided on the left and right of the tip of the display part frame 403
in order to regulate the opening amount of the display part case 2. In the present embodiment,
the abutment parts are abutted when the display part frame is opened about 90 degrees. The
amount of opening is regulated by the contact 403 a with the main body frame 402.
[0045]
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The display unit frame 403 is provided with a large number of holes 403 b for avoiding
mounting components in order to reduce the thickness as much as possible.
[0046]
FIG. 6 is a view for explaining the layout of mounted parts on the left side of the barrel unit 7
shown in FIG. 3 (b).
[0047]
The mounted components are configured in a plurality of layers, and are shown in three stages
from FIG. 6 (a) to FIG. 6 (c).
[0048]
As shown in FIG. 6A, the main substrate 9 is on the front side.
The main substrate 9 has a CPU and performs image processing and control of the entire camera.
FIG. 6B is a view showing mounted components in a layer under the main substrate 9.
A wireless communication substrate 11 is located above the lower layer of the main substrate 9,
and a sub substrate 12 is located below it, and a USB connector 12a and a speaker connector
12b are mounted on the surface.
As shown in FIG. 6C, the speaker 6 is disposed in a layer further below the wireless
communication substrate 11, and the button battery 12c and the micro SD slot 12d are provided
on the back surface of the sub substrate 12 which is hidden for explanation. Indicates that is
implemented.
As for the micro SD slot 12d, it is difficult to mount on the main board 9 due to space, and the
design and operability are examined.
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[0049]
FIG. 7 is an exploded perspective view of the left side of the main housing 3 described above.
[0050]
Although only the mounted components are described in FIG. 6, the upper flexible cable 10, the
main substrate 9, the heat sink unit 14, the wireless communication substrate 11, the
intermediate flexible cable 13, the speaker holding member 15, the sub substrate 12, the speaker
6, and the hinge are actually A plurality of layers are arranged in the order of units 4.
[0051]
The heat sink unit 14 is provided to transfer the heat of the CPU 9 a mounted on the back of the
main substrate 9 inward of the main body, and the intermediate flexible cable 13 is provided
between the main substrate 9 and the speaker holding member 15 by the elastic member 14 b.
The heat conduction sheet 14a which is charged while being sandwiched between and attached
to the heat sink 14a is held in close contact with the CPU 9a.
[0052]
The intermediate flexible cable 13 connects the main substrate 9, the wireless communication
substrate 11, and the sub substrate 12, and the switch of the operation unit on the side surface
of the main housing 3 is also mounted.
The speaker 6 is connected to the sub substrate 12 by a connector 12 b.
The speaker holding member 15 holds the mode switching switch 151 in addition to the speaker
6.
The base member 16 is provided for holding the upper flexible cable 10 and holding the
substrate, and also serves as a blind cover to prevent the inside from being seen when the hinge
unit 4 is rotated and the display frame 403 is moved. There is.
The side cover 17 is composed of a button 171 and a strap attaching portion 172 and is attached
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at the end of the assembly.
[0053]
As described above, the size of the main body can be reduced by laying out the substrate and
other components over three or more layers.
[0054]
The speaker holding member 15, the base member 16, and the sound path opening / closing
member 18, which are the features of the present embodiment, will be described with reference
to FIGS.
[0055]
8 is a perspective view showing the speaker holding member 15, the speaker 6, and the sound
path opening / closing member 18, and FIG. 8 (a) shows the speaker holding member 15 and the
speaker 6 viewed from the rear side of the main body. b) shows the speaker holding member 15
and the sound path opening / closing member 18 viewed from the front side of the main body.
[0056]
As shown in FIG. 8A, the speaker 6 is attached to the speaker storage recess 15a of the speaker
holding member 15, and the opening 15b is provided to pass the connector 6a and the lead wire
6b.
The back of the speaker 6 is fixed by an adhesive member such as a front tape (not shown),
which is positioned by the outer shape of the speaker 6 and the speaker housing recess 15a.
The speaker holding member 15 is provided with an opening 15 c for passing a sound from the
back of the speaker 6 separately from the opening 15 b.
[0057]
As shown in FIG. 8B, the speaker holding member 15 is provided with a U groove 15d from the
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opening 15c toward the upper surface of the main body.
The sound path opening / closing member 18 is fixed to the mounting surface 15 e in the
speaker holding member 15, and the U groove 15 d forms a sound path for guiding the sound on
the rear side of the speaker 6 by covering the opening by the sound path opening / closing
member 18 .
The sound path opening / closing member 18 is an elastically deformable thin plate such as SUS
430 or phosphor bronze, and is positioned and fixed by thermally caulking the positioning
bosses 15 f and 15 g.
More air tightness can be achieved by increasing the number of crimped points as necessary.
[0058]
The sound path opening / closing member 18 can be elastically deformed with the deformation
portion 18a as a fulcrum, and the sound path opening / closing member tip 18b can be displaced
by elastic deformation.
Further, the portion of the sound path opening / closing member 18 which is fitted into the U
groove 15d is processed into a U-shape 18c so that a large gap does not occur in the sound path
even when the sound path opening / closing member 18 is displaced. There is.
Ribs 15h are provided at the end of the U-groove 15d which is an outlet of the sound path, and
slits 15i are provided at both ends of the rib 15h, which escape from the end of the U-shaped
bent portion 15c of the sound path opening / closing member 18.
In a state where only the speaker holding member 15 and the sound path opening / closing
member 18 are assembled, the rib 15h at the tip end of the sound path opening / closing
member 18 and the tip of the U groove 15d abuts, and the sound path by the U groove 15d is
closed.
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[0059]
FIG. 9 is a perspective view showing the relationship between the sound path opening / closing
member 18 and the base member 16 and the hinge unit 4.
9 (a) is a perspective view showing the base member 16 from the rear side of the main body, and
FIG. 9 (b) is a state in which the speaker holding member 15, the sound path opening / closing
member 18, and the base member 16 are combined. It is a perspective view from the body back
side for explaining a relation.
[0060]
As shown in FIG. 9 (a), the base member 16 has a wall 16a for blinding in a form in which the
pivoting range of the hinge unit 4 is escaped, and an opening 16b is provided in the wall 16a for
blinding.
By providing the opening 16b, the sound that has passed through the U-shaped groove 15d from
the rear surface of the speaker 6 can escape from the opening 16b to the opening 302 of the
main housing 3.
[0061]
As shown in FIG. 9 (b), the tip 18 b of the sound path opening / closing member 18 can project
from the opening 16 b of the base member 16. The sound path opening / closing member tip
portion 18 b contacts the butting portion 403 a of the member 403.
When the hinge unit 4 is closed, the abutment portion 403a pushes the tip of the sound path
opening / closing member 18b, and the sound path opening / closing member 18 is elastically
deformed.
Due to this, with the hinge unit 4 closed, the sound path is open. Further, by providing a notch
403 b in the vicinity of the rotation axis 404 of the display unit frame 403, sound can be more
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easily passed.
[0062]
FIG. 10 is a cross-sectional view taken along the U-groove 15d portion, FIG. 10 (a) shows a state
in which the display unit housing 2 is opened, and FIG. 10 (b) shows a state in which the display
unit housing 2 is closed. .
[0063]
As shown in FIG. 10A, in the state where the display unit housing 2 is open, the tip 18b of the
sound path opening / closing member 18 is in contact with the rib 15h provided at the U groove
outlet, and the sound path opening / closing member 18 is flat. is there.
At this time, the sound path on the rear surface of the speaker holding member 15 is closed by
closing the rib 15h and the sound path opening / closing member 18, and the sound directed
from the speaker 6 to the rear surface side of the speaker holding member 15 is the U groove
15d of the speaker holding member The sound is emitted only from the sound outlet 301 in
front of the speaker 6 without coming out of the vehicle.
[0064]
As shown in FIG. 10B, when the display unit housing 2 is closed, the butt portion 403a of the
display unit frame of the hinge unit 4 pushes the tip 18b of the sound path opening / closing
member 18 and the sound path opening / closing member 18 The elastic deformation causes a
gap between the rib 15 h in the U-groove of the speaker holding member and the sound path
opening / closing member 18. The sound directed from the speaker 6 toward the rear side of the
speaker holding member 15 passes through the U groove 15b of the speaker holding member 15
and the opening 16b of the base member 16 in this order, and is emitted from the hinge opening
302 of the main housing 3. Therefore, both the sound from the sound release port 301 on the
back of the main body housing 3 and the sound from the hinge opening 302 can reach, and as a
result, the difference between the volume when the display housing 2 is closed and when it is
open. Can shrink.
[0065]
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17
As described above, since the second sound output port can be opened and closed interlocked
with the opening and closing operation of the hinge unit without arranging the drive source and
the drive mechanism in the main body case, the display unit is simple while suppressing the cost.
It is possible to reduce the change in volume due to the opening and closing of the housing. And,
when there is a problem in placing the speaker on the back of the main body casing due to the
restriction by the miniaturization of the main body and the enlargement of the display panel,
there is no problem in practical use, and the choice of speakers is increased and the restriction
on design is reduced. it can.
[0066]
As mentioned above, although the preferable embodiment of this invention was described, this
invention is not limited to these embodiment, A various deformation | transformation and change
are possible within the range of the summary. For example, in an electronic device that supports
the first housing and the second housing so as to be able to open and close by a hinge
mechanism, a speaker is provided in one of the housings, and a speaker's sound emission port is
the other housing. As long as the electronic device performs opening and closing of the second
sound emission port in conjunction with the hinge rotation when being covered by the electronic
device, the present invention can also be applied to electronic devices other than the imaging
device described above.
[0067]
Reference Signs List 1 digital camera, 2 display unit housing, 3 main unit housing, 4 hinge unit,
401 hinge unit, 402 main unit frame, 403 display unit frame, 403 a butting unit, 404 rotary
shaft, 405 connecting unit, 406 torque generating mechanism, 407 display Side cable, 5 display
panels, 6 speakers, 7 lens barrel units, 8 batteries, 9 main boards, 10 upper flexible cables, 11
wireless communication boards, 12 sub boards, 13 middle flexible cables, 14 radiator plate units,
15 speakers Holding member, 16 base member, 17 side cover, 18 sound path opening / closing
member
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