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DESCRIPTION JP2018026666

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DESCRIPTION JP2018026666
Abstract: To provide a camera apparatus having a high quality sound collecting function by
preventing generation of wind noise at an opening for sound collection while moving. A step
portion (5a) directed to the inside of a housing (2) is provided on the upper surface of the
housing (2) of a camera device (1). The stepped portion 5a has a vertical wall portion 5b
disposed in a direction intersecting the moving direction of the movable body on which the
camera device 1 is mounted. The vertical wall portion 5b is opened toward the rear in the
moving direction. And an opening 5c for sound collection. [Selected figure] Figure 6
Camera device
[0001]
The present disclosure relates to a camera device mounted on a mobile object such as a bicycle.
[0002]
In recent years, action camera devices such as cycle recorders have begun to be on the market.
When using these action camera devices, recording may be performed during moving image
shooting, and the demand for action camera devices incorporating a microphone is increasing.
[0003]
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On the other hand, in the case where the microphone is disposed in the housing of the camera
device, if the housing is simply provided with an opening and sound is collected, the air flow may
enter from the opening and become wind noise and become noise.
[0004]
Therefore, in order to prevent the air flow from entering the opening, as disclosed in Patent
Document 1, providing a wind noise preventing member such as glass wool or the like, as
disclosed in Patent Document 2, a projecting partition member It has been proposed to provide
etc.
[0005]
JP 2012-147137 JP JP 2015-130055
[0006]
However, action camera devices such as cycle recorders are used in the open air for a long time
in the open air and in a state of being exposed to rain.
As disclosed in Patent Document 1, when glass wool is used as a wind noise preventing member,
there is a possibility that the glass wool may be scattered or deteriorated to fail to perform its
function by being exposed to the outside air for a long time.
[0007]
Further, as disclosed in Patent Document 2, when a partition member protruding from the
housing is provided, there is a problem in safety when a person touches the projecting partition
member.
[0008]
The present disclosure has been made in view of such a point, and an object thereof is to provide
a camera apparatus having a microphone having a high quality sound collecting function, which
has a simple and safe configuration, prevents wind noise from being generated. It is in.
[0009]
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In order to achieve the above object, in the technology disclosed herein, an opening for sound
collection of a microphone is provided on a vertical wall of a stepped portion provided in a
housing of a camera device, and the opening is a movement of a moving body. It was arranged to
face the rear with respect to the direction.
[0010]
Specifically, the camera device disclosed herein is a camera device mounted on a mobile body,
and the camera device includes a case having an opening for sound collection, and a microphone
installed inside the case And the housing has a stepped portion toward the inside of the housing
on at least one of the surfaces substantially parallel to the moving direction of the movable body,
and the housing is disposed to intersect the moving direction. The vertical wall is provided with
an opening, and the opening is characterized by being opened rearward in the movement
direction.
[0011]
According to this configuration, the vertical wall of the stepped portion of the housing can be
effectively used to prevent the air flow from directly entering the sound collection opening, so
even for long-time use in the open air, The sound collection prevention function of the wind noise
can be stably maintained.
In addition, since no projection or the like is provided, safety can be secured when operating or
removing the camera device.
[0012]
Further, another camera device disclosed herein is a camera device mounted on a moving body,
and the camera device is installed in a housing having a first opening for sound collection, and
inside the housing A microphone, and a cover member covering a surface on which the
microphone of the housing is disposed, wherein the cover member has a stepped portion facing
the inside of the housing on at least one of the surfaces substantially parallel to the moving
direction of the movable body. A second opening is provided in the vertical wall of the stepped
portion, which is disposed to intersect the moving direction, and the second opening is opened
rearward in the moving direction. It is characterized by
[0013]
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The camera device has a plurality of microphones and a plurality of openings or second openings
corresponding to the plurality of microphones, and the plurality of openings or the second
openings are in a direction perpendicular to the moving direction of the vertical wall Preferably,
they are provided separately from each other.
[0014]
According to this configuration, by providing the opening separately from each other, sound
collection can be performed in stereo, and even if wind noise occurs on one side, it is avoided
that the other microphone picks up the sound it can.
[0015]
Preferably, the camera apparatus comprises a speaker between the plurality of microphones and
another opening corresponding to the speaker between the plurality of openings or the second
opening.
[0016]
According to this configuration, the voice input / output unit can be miniaturized by providing
the speaker opening between the left and right microphone openings.
[0017]
The stepped portion preferably has an inclined surface provided so as to extend from the bottom
of the vertical wall to a surface extending in the moving direction.
[0018]
According to this configuration, by providing the inclined surface, the air flow generated during
movement can easily flow along the inclined surface.
This makes it difficult for the air flow to flow into the opening provided in the vertical wall, and
the wind noise can be reliably prevented from being collected.
[0019]
As described above, according to the present disclosure, it is possible to prevent a microphone
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from picking up wind noise and to realize a camera device having high quality sound collection
performance.
[0020]
It is a perspective view which shows the outline | summary of a camera apparatus.
It is a disassembled structural view of the housing part of a camera apparatus.
It is the perspective view seen from slanting upper front which shows the outline | summary of
the battery storage box in which the microphone and the speaker were attached.
It is the perspective view which looked at the battery storage box of FIG. 3 from diagonally
downward front.
It is the figure which looked at the battery storage box of FIG. 3 from diagonally lower back.
It is sectional drawing in the VI-VI line of FIG.
It is the perspective view which looked at the deck cover from diagonally upper back.
It is a cross-sectional schematic diagram which shows the flow of the airflow in the vicinity of a
level | step-difference part when an opening is provided in the bottom part of a level | stepdifference part.
It is a cross-sectional schematic diagram which shows the flow of the airflow in the vicinity of a
level | step-difference part when the opening is provided in the vertical wall of the level | stepdifference part based on embodiment.
It is a cross-sectional schematic diagram which shows the flow of the airflow in the vicinity of a
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level | step-difference part when the bottom part of a level | step-difference part is made into an
inclined surface based on embodiment.
[0021]
Hereinafter, the present embodiment will be described in detail based on the drawings.
The following description of the preferred embodiments is merely exemplary in nature.
[0022]
In the present description, unless stated otherwise, “front” and “rear” refer to the side on
which the imaging lens of the camera device is disposed and the opposite side, “upper” and
“lower” are those of the housing, The side on which the sound collection opening is provided
and the opposite side.
Also, "left and right" refers to left and right based on "front" in the front-rear direction.
[0023]
(Structure of Camera Device) FIG. 1 is a perspective view showing an outline of the camera device
according to the present embodiment, and FIG. 2 is an exploded structural view of a housing
portion of the camera device.
[0024]
FIG. 3 is a perspective view showing the outline of the battery storage box to which the
microphone and the speaker are attached according to the present embodiment, viewed from the
upper front, and FIG. 4 is a perspective view viewed from the lower front 5 is a view as seen
obliquely from the lower back.
6 is a cross-sectional view taken along the line VI-VI in FIG. It has been corrected with the review
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of drawings.
[0025]
FIG. 7 is a perspective view of the deck cover as viewed obliquely from the upper rear.
[0026]
In FIGS. 1 and 2, the detailed structure of the casing, the imaging unit, and the like are not
shown.
Moreover, in FIG. 7, illustration is abbreviate | omitted except the peripheral part of the level |
step-difference part 5a of the deck cover 5. FIG.
[0027]
The camera device 1 according to the present embodiment is attached to a moving body, for
example, a traveling body such as a bicycle or a motorcycle, a flying body such as a drone, or the
like so that the imaging lens 6 faces the movement direction.
[0028]
The camera device 1 includes an imaging lens 6 on the front and an operation button 7 on the
top.
By the operation button 8, the power on / off and the start and end of recording are determined.
The liquid crystal monitor 9 displays information such as that recording is in progress and the
charge state of the battery.
[0029]
The housing 2 of the camera device has an upper housing 3, a lower housing 4 and a deck cover
5. The upper housing 3 and the lower housing 4 are screwed to each other and fastened.
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Furthermore, a deck cover 5 is mounted on the upper housing 3, and the deck cover 5 is fitted
into the upper housing 3. A lid 10 is provided on the rear surface of the housing 2 for opening
and closing when a recording medium such as a battery or an SD card is taken in and out.
[0030]
Inside the housing 2, an imaging unit (not shown), a control board 14 (see FIG. 4), and a battery
storage box 30 are housed.
[0031]
The imaging unit has an image sensor (not shown) and a heat radiation unit 12 (see FIG. 6), and
is provided inside the housing 2 so as to face the imaging lens 6.
The light incident on the imaging lens 6 is condensed on the imaging surface of the image
sensor, and the light signal is converted into an electrical signal.
[0032]
The camera device 1 has an antenna unit (not shown) and a communication substrate 19
provided with a wireless LAN communication circuit. The antenna unit is provided on the upper
housing 3, and the communication substrate 19 is provided in the battery storage box 30.
Mounted on the top of the
[0033]
The antenna unit and the communication board 19 are provided to receive GPS (Global
Positioning System: Global Positioning System) signals and signals from a wireless LAN, and
obtain position information.
[0034]
The GPS signal received by the antenna unit and the signal from the wireless LAN are subjected
to signal processing by the communication substrate 19 and then recorded in the memory
element or recording medium on the control substrate 14 (see FIG. 4) through the flexible wiring
39 .
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The recorded positional information is used, for example, to add positional information and map
information during movement to the image information of the captured moving image.
[0035]
The battery storage box 30 stores a battery 34 such as an alkaline battery or a lithium ion
battery inside, and power is supplied to each electronic component of the camera device 1 from
the battery.
[0036]
According to the camera device of the present embodiment, position information and voice or
sound information by recording can be added to a moving image taken while moving, and it is
easy for the driver to remain clearly in memory, and movement information You can get an
animation that is easy to trace.
[0037]
(Attachment Structure of Mark and Speaker) As shown in FIGS. 3, 4 and 5, the battery storage
box 30 has a substantially rectangular parallelepiped shape, and the rear surface of the battery
storage box 30 has an opening 30 a. When the lid 10 is opened, the battery 34 (see FIG. 2) is
accommodated in the battery accommodating box 30 through the opening 30a.
An external terminal (not shown) of the battery 34 is connected to a battery terminal portion 35
provided on the inside of the front surface of the battery housing box 30.
The battery terminal unit 35 supplies power to the control board 14 and the like from a terminal
provided on the front outer side of the battery housing box 30 through a wire (not shown).
[0038]
The control substrate 14 is attached to the lower surface of the battery storage box 30, and on
the upper surface and the lower surface of the control substrate 14, a large number of electronic
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components 15 such as LSIs and synchronous DRAMs that process electrical signals from the
image sensor An electronic circuit is provided.
Further, the control substrate 14 is provided with a storage medium storage unit 16 for storing a
memory card such as an SD card, and a connection terminal port 17 for exchanging signals
according to the standard such as USB with the outside.
[0039]
Further, on the upper surface of the battery housing box 30, a substrate mounting portion 30b
for mounting the communication substrate 19, a microphone mounting portion 30c, and a
speaker mounting portion 30d are provided. The substrate mounting portion 30b, the
microphone mounting portion 30c, and the speaker mounting portion 30d are integrally formed
of resin and configured.
[0040]
As shown in FIGS. 3 to 6, the battery housing box 30 is fastened to a metal plate 31 placed so as
to cover the upper surface thereof.
Specifically, in a state in which the positioning bosses 30g provided in the battery housing box
30 are inserted into the positioning holes 31a provided in the metal plate 31, the screw is
screwed at a plurality of places and fastened.
[0041]
The laterally extending portions 31 b of the metal plate member 31 are extended to the right
side surface and the left side surface of the main body portion 31 until reaching the vicinity of
the lower surface of the main body portion 31.
[0042]
As shown in FIG. 4, on the left side surface of the battery storage box 30, a plurality of wires for
fixing the wires 37 and 38 connecting the microphone 32 and the speakers 33 and the control
substrate 14 on the lower surface of the battery storage box 30. A fixing portion 30f is provided.
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Each wiring fixing portion 30f has a substantially annular shape in which a part is cut away, and
the wires 37 and 38 are inserted into the individual wiring fixing portions 30f to prevent the
generation of slack or extra tension. It is fixed to the left side of part 30.
[0043]
The wiring fixing portion 30f is also integrally formed of resin with the battery housing box 30.
[0044]
(Structure of Opening for Voice Input / Output) The microphone 32 collects, for example, voice
emitted by the driver during movement and sound from the surrounding environment, and
generates vibration generated by the microphone by voice or sound into an electric signal.
Convert.
In many cases, the converted electrical signal is signal-processed by the electronic component 15
or the like disposed on the control substrate 14 and recorded in a memory element or a
recording medium accommodated in the recording medium accommodation unit 16.
[0045]
The speaker 33 outputs, for example, a signal sound indicating that the battery remaining
amount has become low, or that the destination has been reached.
[0046]
As shown in FIGS. 3 to 5, one microphone attachment portion 30c is disposed on the left and
right of the speaker attachment portion 30d, and has an opening at the top and a substantially
cylindrical part where a side surface is cut away. It is a shape.
The microphone attachment portion 30c when viewed from above has a substantially C shape.
The microphone 32 is inserted into the microphone attachment portion 30c via an annular
rubber 36 and fixed.
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[0047]
The speaker mounting portion 30 d has a shape as viewed from above which is a shape
sandwiched between two arcs, and the speaker 33 is mounted between the arcs. The speaker 33
is attached to the upper surface of the speaker attachment portion 30d via an adhesive such as
double-sided tape. Further, a cloth (not shown) is attached to the upper surface of the speaker 33
in order to prevent the silicone sheet described later from being rubbed against the peripheral
portion of the metal speaker 33 and torn.
[0048]
Further, as shown in FIGS. 4 and 6, the microphone attachment portion 30c and the speaker
attachment portion 30d are integrally provided so as to project forward than the front surface of
the battery storage box 30, and the microphone attachment portion 30c is provided. The bottom
of the speaker mounting portion 30d has reinforcing ribs 31e extending downward along the
front surface of the main body 30, respectively.
[0049]
The top surface of the microphone 32 and the top surface of the speaker 33 are arranged to be
substantially flush with each other.
[0050]
By integrating the microphone attachment portion 30c and the speaker attachment portion 30d,
the overall strength of these components can be improved.
Further, the strength against external force from above is further improved by the reinforcing rib
31e.
Thus, damage to the microphone 32 and the speaker 33 can be prevented.
[0051]
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Further, the microphone attachment portion 30 c and the speaker attachment portion 30 d are
disposed so as to protrude above the upper surface of the main body portion 30.
[0052]
As shown in FIG. 2, a recess 3a directed to the inside of the housing 2 is provided on the upper
surface of the upper housing 3, and openings 3c and 3d are provided on the bottom 3b of the
recess 3a. .
[0053]
The openings 3 c are provided one by one in the left-right direction across the opening 3 d.
Two openings 3d are provided between the plurality of openings 3c, spaced apart in the left-right
direction.
[0054]
The number of openings 3 d may be two or more.
[0055]
The recess 3 a shown in FIG. 2 is covered with a waterproof sheet (not shown) to prevent entry
of moisture such as rain water into the camera device 1 from the outside.
The waterproof sheet is made of, for example, silicone or the like.
In addition, a part of upper housing 3 can be made to remain between a plurality of openings 3 d
by providing a plurality of openings 3 d spaced apart in the left-right direction. If the sheet hangs
down due to the entry of rainwater or the like, the sheet may be torn. Since the sheet abuts on a
part of the remaining upper housing 3, the amount of deflection of the sheet can be reduced, and
sheet tearing and the like can be suppressed.
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[0056]
Further, as shown in FIGS. 6 and 7, on the upper surface of the deck cover 5, a stepped portion
5a directed to the inside of the housing 2 is provided, and in the vertical wall 5b of the stepped
portion 5a, an opening 5c, 5 d are provided respectively.
[0057]
The openings 5 c are provided one by one in the left-right direction across the opening 5 d.
[0058]
The openings 3 c and 5 c are openings for sound collection of the microphone 32, and the
openings 3 d and 5 d are openings for output from the speaker 33.
[0059]
Further, as shown in FIG. 6, the microphone 32 attached to the microphone attachment portion
30c is disposed at a position close to the sound collection openings 3c and 5c.
Similarly, the speaker 33 attached to the speaker attachment portion 30d is disposed at a
position close to the output openings 3d and 5d.
[0060]
Here, the structure of the step portion 5a will be further described.
[0061]
FIG. 8 is a schematic cross-sectional view showing the flow of the air flow in the vicinity of the
stepped portion when the opening is provided at the bottom of the stepped portion.
FIG. 9 is a schematic cross-sectional view showing the flow of the air flow in the vicinity of the
stepped portion when the opening is provided in the vertical wall of the stepped portion
according to the present embodiment.
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FIG. 10 is a schematic cross-sectional view showing the flow of air flow in the vicinity of the
stepped portion when the bottom of the stepped portion is an inclined surface according to the
present embodiment.
[0062]
As shown in FIGS. 9 and 10, the vertical wall 5b is provided on the front side of the step portion
5a so as to be substantially orthogonal to the front-rear direction, and the openings 5c and 5d
are opened rearward. ing.
[0063]
Further, as shown in FIGS. 6, 7 and 10, the bottom of the stepped portion 5a is an inclined
surface provided so as to extend from the bottom of the vertical wall 5b toward the top surface
of the deck cover 5.
[0064]
In addition, the inclined surface is a linear flat surface when viewed from the left and right
direction.
[0065]
As shown in FIG. 9, the bottom of the stepped portion 5a may be substantially orthogonal to the
vertical wall 5b.
[0066]
(Operation and Effect in the Present Embodiment) Next, the operation and effect in the present
embodiment will be described using FIG. 8 to FIG.
[0067]
In the present embodiment, since the movable body is moving toward the front of the camera
device 1, the moving air flow from the front toward the rear with respect to the camera device 1.
Thus, the vertical wall 5b is disposed substantially orthogonal to the moving direction.
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[0068]
At this time, the moving air flows along the upper surface of the deck cover 5, while a part of the
air flows in the stepped portion 5 a toward the bottom of the stepped portion 5 a.
[0069]
As shown in FIG. 8, when the opening 5c is provided at the bottom of the step 5a, the air flow
flowing toward the bottom flows into the opening 5c.
At this time, a wind noise is generated near the opening 5c, and when the microphone 32 picks it
up, it becomes noise, and the sound collection quality of the microphone 32 is degraded.
[0070]
On the other hand, as shown in FIG. 9, when the opening 5c is provided in the vertical wall 5b of
the stepped portion 5a, the air flow flowing toward the bottom of the stepped portion 5a does
not directly hit the vertical wall 5b.
[0071]
Moreover, under the influence of the air flow flowing in the moving direction (front-rear
direction), the vicinity of the vertical wall 5b has negative pressure with respect to the
atmosphere above the deck cover.
From the above, it is possible to suppress the air flow from flowing into the opening 5c.
Therefore, the generation of wind noise can be prevented, and the sound collection quality of the
microphone 32 is improved.
[0072]
In the structures shown in FIGS. 8 and 9, depending on the relationship between the height H of
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the vertical wall 5b and the length L of the bottom, for example, the air flow may collide with the
rear side or the left and right vertical walls, etc. Turbulence may occur in the stepped portion 5a,
which may flow into the opening 5c.
[0073]
Therefore, as shown in FIG. 10, when the opening 5c is provided in the vertical wall 5b of the
stepped portion 5a and the bottom of the stepped portion 5a is an inclined surface facing
upward, the vertical wall on the rear side can be eliminated. There is no air flow collision at
In addition, the area of the vertical walls on the left and right is also reduced, and the collision
frequency of the air flow at these is reduced.
Furthermore, since the moving air flow comes to flow upward along the inclined surface, it is
possible to more reliably prevent the flow of the air into the opening 5c and the generation of
wind noise caused thereby.
[0074]
As described above, according to the present embodiment, the sound collection opening 5 c of
the microphone 32 is a direction that intersects the moving direction of the vertical walls of the
step 5 a facing the inside of the housing 2, and By providing the vertical wall 5b disposed on the
side (front side) on which the movable body moves, it is possible to prevent the air flow in motion
from flowing into the opening 5c.
As a result, the generation of wind noise in the vicinity of the opening can be suppressed, and
high-quality sound with little noise can be collected by the microphone 32.
[0075]
As the sound collection quality of the microphone 32 is improved, it is possible to enjoy the
moving image comfortably when later reproducing and viewing the moving image taken while
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moving.
In addition, sound information other than the voice recorded during shooting can be stored in a
high quality state with less noise.
[0076]
Further, by providing the sound collecting opening 5c in the step 5a directed inward from the
upper surface of the deck cover 5, the air flow partitioning member and the like do not protrude
outside the casing, and a person collects the sound. Even if the vicinity of the part 5c is touched,
it is safe.
[0077]
In addition, by providing the sound collecting openings 5c in the left-right direction with the
output opening 5 of the speaker 33 interposed therebetween, stereo sound collection becomes
possible, and wind noise from one of the openings Even if you pick up the sound, you can avoid
picking up the sound from the other opening.
This can prevent the drop in the sound collection quality.
[0078]
In addition, the speaker 33 and the microphone 32 can be disposed close to each other, so that
the voice input / output unit can be miniaturized.
[0079]
In the present embodiment, the vertical wall 5 b is provided to be substantially orthogonal to the
movement direction (front-rear direction), but the vertical wall 5 b may be provided at a position
obliquely intersecting the movement direction, The air flow may be provided at a position other
than the position where the air flow directly flows into the opening 5c.
[0080]
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Further, in the present embodiment, the inclined surface at the bottom of the step portion 5a is a
flat surface extending linearly when viewed in the left-right direction, but is a curved surface
convex upward when viewed in the left-right direction It is also good.
The latter curved shape increases the strength against external force from above.
[0081]
In the present embodiment, the opening for voice input and output is provided on the upper
surface of the housing 2. However, the opening may be provided on the right surface, the left
surface, or the lower surface of the housing 2.
[0082]
In that case, the positions of the openings 3c and 3d and the positions of the microphone 32 and
the speaker 33 also change according to the positions 5c and 5d of the openings.
[0083]
When the openings 5 c and 5 d are provided on the lower surface of the camera device 1, the
deck cover 5 may be attached to the lower surface of the lower housing 4.
The openings 3c and 3d may be provided in the lower housing.
[0084]
Alternatively, the microphone 32 and the speaker 33 may be attached to the lower surface of the
battery storage box 30.
[0085]
When the openings 5 c and 5 d are provided on the right side or left side of the camera device 1,
the deck cover 5 may be attached to the right side or left side of the housing 2.
[0086]
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In addition, without providing the openings 3c and 3d, the sound coming from the opening 5c
may be directly collected by the microphone 32.
The sound output from the speaker 33 may be output directly from the opening 5 d.
[0087]
In the case where the opening 5c is provided on the right side or the left side of the camera
device 1 and stereo sound collection is performed, the two openings 5c and 5c are arranged in
the vertical direction.
The opening 5d for output of the speaker 33 may be disposed between the two openings 5c and
5c, and the openings 5c and 5d may be arranged in the vertical direction.
The arrangement relationship between the two openings 3c and the arrangement relationship
between the openings 3c and the openings 3d, and the arrangement relationship between the
two microphones 32 and the arrangement relationship between the microphones 32 and the
speakers 33 are the same.
[0088]
In the present embodiment, the battery storage box 30, the microphone attachment portion 30c,
and the speaker attachment portion 30d are integrally formed of resin, but the microphone
attachment portion 30c and the speaker attachment portion 30d, and the battery storage It may
be provided separately from the box 30.
[0089]
Although the communication board 19 is disposed on the upper surface of the battery storage
box 30, the communication board 19 may be attached to the upper housing 3.
[0090]
Moreover, although the wiring fixing | fixed part 30f was provided in the left side of the battery
storage box 30, you may provide in the right side.
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[0091]
The number of operation buttons 7 is not limited to this embodiment, and may be more or less.
[0092]
Note that the camera device according to the present embodiment is not limited to use mounted
on a bicycle, a motorcycle, a drone or the like, and may be used for other digital cameras.
[0093]
The present disclosure prevents the collection of wind noise by providing an opening for sound
collection on the vertical wall disposed in the direction intersecting the moving direction of the
step portion toward the inside of the housing of the camera device. Since it is possible, it is useful
when applied to a camera apparatus attached to a mobile body such as a cycle recorder.
[0094]
1 camera device 2 case 3 upper case 3c sound collecting opening 3d speaker output opening 4
lower case 5 deck cover 5a step 5b vertical wall 5c sound collecting opening 5d speaker output
opening 30 battery storage Box 30c Microphone attachment 30d Speaker attachment 31 Metal
plate 32 Microphone 33 Speaker
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