JP2017032884

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DESCRIPTION JP2017032884
Abstract: [Problem] To provide an imaging device maintaining a heat radiation effect even when
the product is miniaturized by attaching a speaker to a ventilation duct portion for dissipating
heat inside the product. An imaging apparatus has an air inlet 22 and an air outlet 12 on the
exterior of the main body, and a duct portion (a front duct 50, a rear duct) forming a ventilation
path from the air inlet to the air outlet, and outside air from the air inlet And the substrate 40 on
which the heating element is mounted, the mounting surface of the substrate and the duct are
arranged substantially in parallel, and a part of the duct and the heating portion of the substrate
are provided. It abuts, and the duct 110 is equipped with a speaker 110 capable of emitting
sound toward the inside of the duct. [Selected figure] Figure 6
Imaging device
[0001]
BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an
imaging device which incorporates a cooling fan and a speaker for sound emission and which is
excellent in size and convenience.
[0002]
Small devices for general consumer use, such as digital still cameras (hereinafter referred to
simply as cameras if not necessary).
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And so on), the constituent devices, etc. have been improved in function and performance, and
progress has been made, and the size of the device has been further miniaturized. That is, in the
market, smaller and more portable cameras tend to be accepted by users and development is
desired.
[0003]
Under such circumstances, electronic devices and the like used as functional parts for image
processing etc. are small in size and are improved in performance such as improvement in
processing speed, and the amount of heat generation inside the camera increases accordingly.
There is. In addition, although the camera is small, there is an intention of a camera
manufacturer that aims to differentiate by giving various functions, and while the function is
further enhanced, the tendency to generate heat is increased due to the increase of power
consumption and the like.
[0004]
Therefore, there is also concern that the built-in electronic device may malfunction due to the
heat generated inside the camera body, the influence on the optical components, for example, the
component accuracy of the mirror copper system of the lens may be deviated, etc. It has come to
be
[0005]
Also, in cameras with functional parts such as microphones and speakers, there are products
with slit grille like vents, but they are not originally provided for the purpose of ventilation, and
they bring out the functions of microphones and speakers It is for
[0006]
Patent Document 1 proposes a product in which the size of the product is reduced by attaching a
speaker to a ventilation slit portion for dissipating heat in the product.
[0007]
Unexamined-Japanese-Patent No. 2003-249782
[0008]
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However, in Patent Document 1 described above, there is a possibility that the heat radiation
effect is reduced because the ventilation slit for dissipating the heat inside is closed by the
speaker.
[0009]
The imaging device according to the present invention has an air inlet and an air outlet on the
main body exterior, takes in air from the air inlet and a duct portion forming a ventilation path
from the air inlet to the air outlet, and releases air from the air outlet. And a duct on which the
mounting surface of the substrate and the duct are disposed substantially in parallel, and a part
of the duct is in contact with the heat generating portion of the substrate, and the duct is
provided on the duct A first feature is that the speaker is provided to be able to emit sound
toward the inside of the duct.
[0010]
In the imaging device having the first feature, the substrate on which the heating element is
mounted includes at least one connection terminal to which an external plug such as a
connection with an external device or a power supply is connected. The connection terminal
exposes the end of the terminal from the appearance cover, the connection terminal is disposed
in the vicinity of the exhaust port, and the speaker is provided in a space surrounded by the
connection terminal, the duct, and the substrate. The second feature.
[0011]
In the imaging apparatus having the first feature, a substrate temperature acquisition unit and a
fan rotation number control unit are provided, and the fan rotation number is determined
according to the substrate temperature, and substrate temperature information is acquired
during recording. The fan is driven at a fan rotational speed according to the temperature, and an
image and sound recording unit is provided. A plurality of sound sources are recorded in
advance, and the sound source records a cancellation sound for noise generated when the fan
rotates. The third feature of the present invention is that, during the recording operation, when
the fan is driven, a predetermined predetermined cancellation sound is emitted according to the
rotation speed of the fan.
[0012]
Further, in the imaging device having the third feature, a headphone terminal is provided, and
when it is detected that a headphone plug is inserted into the terminal during playback of a
recorded image, sound emission from the speaker is stopped, and the headphone is When the fan
is driving during shooting, when it detects that the headphone plug is inserted into the terminal,
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the headphone emits the sound during recording, and the speaker through the fan The fourth
feature is to emit a cancellation sound corresponding to the number of rotations.
[0013]
According to the imaging device of the present invention, by attaching the speaker to the heat
radiation duct, a space for attaching the speaker is not required in the outer appearance part, and
therefore, the miniaturization can be achieved.
In addition, the noise of the fan noise can be emitted from the speaker in the duct where the fan
noise is transmitted.
For this reason, the effect of the noise cancellation becomes high when the fan noise and the
cancellation noise get on the same air flow.
[0014]
Front perspective view showing the appearance of an imaging device according to an
embodiment of the present invention The front view of the imaging device according to an
embodiment of the present invention The rear perspective view showing the appearance of an
imaging device according to an embodiment of the present invention A side view on the L side
excluding the block diagram showing the configuration of operation control of the imaging
device of the present invention embodiment A schematic cross-sectional view showing the
cooling structure of the imaging device of the present invention embodiment disassembled
perspective view of the cooling structure of the present invention embodiment Figure: An
exploded perspective view of the cooling structure according to the embodiment of the present
invention A perspective view of the fan according to the embodiment of the present invention
Operation control diagram of the speaker according to the embodiment of the present invention
Control chart at the time of connection Temperature table of the present invention embodiment
[0015]
Hereinafter, the preferable form of the imaging device concerning this invention embodiment is
explained in full detail.
[0016]
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In the description, the subject side is the front, and the photographer side is the rear.
Further, regarding the right and left, the right side is the R side, and the left side is the L side as
viewed from the subject.
The description will be made focusing on the relevant parts of the embodiment of the present
invention, and parts not directly related to the present invention will be omitted.
[0017]
<< External Description >> FIG. 1 is a front perspective view showing the external appearance of
the imaging device according to the embodiment of the present invention.
FIG. 2 is a front view of an imaging device according to an embodiment of the present invention.
FIG. 3 is a rear perspective view showing the appearance of the imaging device according to the
embodiment of the present invention.
[0018]
The appearance will be described using FIGS. 1 to 3.
[0019]
The camera 1 is roughly divided into a form in which the main body 2 and the grip 3 are
connected by the connecting portion 4.
[0020]
A microphone unit 90 is provided at the center of the upper surface of the main unit 2, and an
accessory shoe 14 to which peripheral devices can be fixed is provided behind the microphone
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unit 90.
In the vicinity of the left and right ends of the upper surface, strap fittings 15, 16 to which neck
straps can be attached are provided.
[0021]
A lens exterior 5 projects forward from substantially the center of the front of the main body 2.
[0022]
A ZOOM ring 17 and a focus ring 18 are provided on the outer periphery of the lens exterior 5.
[0023]
A display unit 19 having an image display unit 210 at the center is provided on the back of the
main unit 2, and a card lid 20 for inserting and removing a memory card 519 described later is
provided below the display unit 19.
[0024]
A trigger button 130 is provided on the upper front side of the grip portion 3.
[0025]
A mode switching unit 7a, a power button 7b, and an operation unit 7c for performing various
settings at the time of shooting are arranged up and down in the partially cylindrical portion 6 on
the rear of the lens exterior unit 5 on the R side of the main unit 2.
[0026]
Furthermore, terminals are continuously provided vertically at the rear of the mode switching
unit 7a.
[0027]
A headphone terminal 8, an HDMI (registered trademark) terminal 9, a USB terminal 10, and an
external power terminal 11 are provided from the top.
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[0028]
A thin rectangular main body exhaust port 12 is vertically provided at the rear of the terminals,
and a plurality of ribs are connected in series to the main body exhaust port 12 to prevent the
entry of foreign matter.
[0029]
FIG. 4 is a side view looking at the L side of the main body 2 with the grip 3 removed.
On the L side of the main body portion 2, a rectangular main body intake port 22 elongated
vertically is provided at the rear of the cylindrical connection portion 4, and in the same manner
as the main body exhaust port 12, mixing of foreign matter is achieved by a plurality of ribs. I'm
preventing.
[0030]
<< Description of Operation Control >> FIG. 5 is a block diagram showing the configuration of
operation control of the camera 1 according to the embodiment of the present invention.
[0031]
The camera 1 includes a lens unit 30 including an optical lens group including an optical control
system such as focus and zoom and a diaphragm, a main imaging unit 502 including an imaging
device 31 and an imaging substrate 32 described later, a camera signal processing unit 503, and
a compression / expansion processing unit 504, an image display unit 210, a recording and
reproduction processing unit 506, a card control unit 507 that controls a memory card 519, a
large capacity internal memory control unit 508 that controls a large capacity built-in memory
520, an audio signal processing unit 510, a memory 511, and a memory Control unit 512,
operation unit 514, digital I / F 515 used for connection with external device 521, input / output
unit 516 for connection with external device 522, GPS reception unit 524, GPS signal processing
unit 525, power control unit 517, The battery 523 is further provided with a fan 70 for cooling
the main body.
[0032]
Also, the functional blocks are mutually connected in data communication via a data bus 518.
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[0033]
In such a camera 1, a memory 511 has a program storage area and a data work area, is time
shared using each functional block via a data bus 518, and is controlled and managed by a
memory control unit 512.
[0034]
A CPU 513 is a central processing unit that generally controls the entire camera 1 by executing a
predetermined program or the like.
[0035]
The operation unit 514 includes the image display unit 210 with the touch panel, a power button
7 b, a trigger button 130 and the like.
[0036]
As described above, it is possible to start / stop moving image shooting by pressing the trigger
button 130 which turns on / off the power by pressing the power button 7b. The other operation
can also be performed by the image display unit 210 with a touch panel.
[0037]
As described above, the operation unit 514 has a function of instructing the CPU 513 to operate
based on key operation or the like from the user.
[0038]
The digital I / F 515 exchanges signals with the external device 521 in accordance with, for
example, a USB (not shown) standard.
[0039]
A memory card 519 is a removable flash memory such as an SD card or Compact Flash
(registered trademark), and recording data and audio data are recorded.
[0040]
The power supply control unit 517 includes a battery detection circuit, a DC-DC converter, a
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switch circuit for switching a block to be energized, and the like, and detects the presence or
absence of the battery 523, the type of battery, and the battery remaining amount.
A battery 523 is lithium ion or the like and supplies power to the camera 1.
[0041]
The GPS receiving unit 524 acquires position and time data from GPS satellites.
This data is processed by the GPS signal processing unit 525 to calculate the position of the GPS
receiving unit 524 and the time at that position.
The camera 1 writes the calculated position information and time information into the large
capacity built-in memory 520 or the memory card 519 together with the image data.
At the time of reproduction, this position information and time information can be referred to,
and can be used for organizing data and storage.
[0042]
Next, the photographing operation, recording operation, and reproduction operation of the
camera 1 will be described.
[0043]
For example, when the photographing operation and the recording operation are instructed by
the operation unit 514, the light from the subject becomes an optical signal whose
predetermined brightness, angle of view, focus, and the like are controlled by the lens unit 30. It
is input against.
The main imaging unit 502 converts an input optical signal into an electrical signal, and outputs
the electrical signal to the camera signal processing unit 503.
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The camera signal processing unit 503 converts this electrical signal into a digital image signal.
[0044]
Then, the image signal is subjected to signal processing such as color separation, gradation
correction, and white balance adjustment, and then output.
[0045]
The audio signal processing unit 510 gain-controls the audio signal input from the microphone
unit 90 to a predetermined level and digitizes the audio signal to output as audio data.
[0046]
A compression / decompression processing unit 504 compresses and encodes the image data
output from the camera signal processing unit 503 and the audio data output from the audio
signal processing unit 510 according to a predetermined compression encoding method.
The shooting data to be compressed and encoded that has been processed by the compression /
decompression processing unit 504 is displayed on the image display unit 21 and also displays
the operation status of the camera 1 as necessary.
[0047]
The recording / reproducing processing unit 506 performs error correction coding processing,
modulation processing, etc. on the data after compression coding obtained by the compression /
decompression processing unit 504, and further performs synchronization, ID, GPS receiving unit
524 and GPS signal processing. After adding data such as position information and time
information calculated from the unit 525 and converting it into a form suitable for recording, the
data is recorded in a recording medium such as a large capacity built-in memory 520 or a
memory card 519.
At this time, the large capacity internal memory control unit 508 controls the recording of the
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large capacity built-in memory 520, and the card control unit 507 controls the recording of the
memory card 519.
[0048]
On the other hand, when the reproduction operation is instructed by the operation unit 514, the
recording / reproduction processing unit 506 detects the original digital data from the data read
from the large capacity built-in memory 520 or the memory card 519, and performs processing
such as error correction and demodulation. Apply.
The PLL circuit generates a clock synchronized with the reproduction data.
[0049]
The compression / decompression processing unit 504 subjects the data output from the
recording / reproduction processing unit 506 to decompression processing corresponding to a
predetermined compression encoding method, and acquires shooting data and audio data before
compression encoding.
The image display unit 21 displays the reproduction data obtained by the compression /
decompression processing unit 504.
[0050]
When an instruction to record input data from the digital I / F 515 is given from the operation
unit 514, the CPU 513 inputs image data or audio data from the external device 521 in the form
of digital signals via the digital I / F 515, It is sent to the recording and reproducing unit 506.
At this time, it is assumed that the image data and audio data from the external device 521 have
already been encoded, and the recording / reproducing processing unit 506 performs processing
necessary for recording the input data as described above to incorporate a large amount of data.
Recording is performed on a recording medium such as the memory 520 or the memory card
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519.
[0051]
When an instruction to record an input signal from the input / output unit 516 is given by the
operation unit 514, the CPU 513 controls the input / output unit 516 to input an image and an
audio signal output from the external device 522.
The input / output unit 516 converts an image and an audio signal output from the external
device 522 into digital data and outputs the digital data to the memory 511.
The CPU 513 outputs the image and audio data stored in the memory 511 to the compression /
decompression processing unit 504 for compression coding, and sends it to the recording /
reproduction processing unit 506.
[0052]
As described above, the recording and reproduction processing unit 506 performs processing
necessary for recording the encoded data and records the data on a recording medium such as
the large capacity built-in memory 520 or the memory card 519.
[0053]
In addition, when the power is turned on, the fan 70 starts driving, and performs air supply and
exhaust via the duct unit 800 described later.
[0054]
The speaker control unit 600 controls the sound output from the speaker.
In addition to audio output of moving images at the time of reproduction, the speaker control
unit 600 also performs control of various operation sounds, warning sounds, and cancellation
sounds for reducing fan noise during recording, which will be described later.
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[0055]
<< Description of Cooling Structure >> The cooling structure inside the main body will be
described.
[0056]
FIG. 6 is a schematic sectional view showing the cooling structure of the main body 2 in an easily
understandable manner.
7 and 8 are exploded perspective views of the cooling structure.
[0057]
A lens unit 30 including a lens group (not shown) is inserted in the lens exterior unit 5, and an
imaging substrate 32 mounted with an imaging element 31 is provided at the rear end of the
lens unit 30.
[0058]
Electrical connection between the imaging substrate 32 and the main substrate 40 is made by
the wire 33.
[0059]
An electric component 41 a and an electric component 41 b are mounted on one side of the main
substrate 40.
[0060]
When power is supplied to the camera 1 and driving starts, the electric components 41a and 41b
generate heat, and if they operate for a long time without releasing heat, the electric components
may become high temperature over the guarantee temperature and cause performance
degradation. There is.
[0061]
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Therefore, positive cooling is required.
In this embodiment, a forced air cooling system is adopted.
[0062]
As shown in FIG. 8, the duct portion 800 has a structure in which the fan 70 is included in the
front duct 50 and the rear duct 60.
[0063]
The material of the front duct 50 and the rear duct 60 is a material having high thermal
conductivity, such as aluminum.
[0064]
A perspective view of the fan 70 is shown in FIG.
The fan 70 has a thin flat shape in the front and back, and is provided with a radiation fin 73 in
which a plurality of blades are arranged in a circle, and a fan inlet 71 near the center on the front
side and a fan outlet on one side only It is opened as 72.
By driving a motor (not shown) provided in the fan 70, the radiation fins 73 rotate.
At this time, the air entered from the fan intake 71 is turned 90 degrees, and is exhausted from
the fan exhaust 72 in the direction of the arrow 80 indicating the flow of wind.
[0065]
A heat radiation rib 51 is formed in the front duct 50 from the main body intake port 22 toward
the main body exhaust port 12.
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Further, a plurality of the heat dissipating ribs 51 are disposed at the top and the bottom.
[0066]
The outer shape of the front duct 50 will be described.
[0067]
When viewed from the front, the front duct 50 has a rectangular box shape.
The main substrate 40 has a shape in which the surface 52 and the surface 53 have a level
difference between the front and the rear.
The element contact surface 52a and the element contact surface 52b are convex on the surface
52, and the boss 55a, boss 55b, boss of the front duct 50 is formed by the main substrate 40
with the screws 100a, 100b, 100c and 100d. When screwed to 55c and the boss 55d, the
electric component 41a abuts on the element contact surface 52a, and the electric component
41b abuts on the element contact surface 52b.
[0068]
When the product is turned on, the heat generated from the electric component 41 a and the
electric component 41 b is transferred to the front duct 50.
[0069]
After fixing the fan 70 to the front duct 50, the duct portion 800 is formed by joining with a
screw or the like so that the outer periphery of the front duct 50 and the rear duct 60 match, and
the opening on the R side becomes the duct inlet 121 The opening on the L side is the duct
exhaust port 120.
The surroundings other than the duct inlet 121 and the duct outlet 120 are sealed.
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[0070]
As shown in FIG. 6, the duct exhaust port 120 has an opening shape and position with the main
body exhaust port 12.
The duct inlet 121 has an opening shape and position with the main inlet 22.
[0071]
<< Fixing of Speaker >> As described above, the surface 53 of the front duct 50 is formed at a
position one step lower than the surface 52 on the back side.
[0072]
A sound output hole 53c is formed in the surface 53, and a boss 53a and a boss 53b are
provided protruding above and below the sound output hole 53c.
[0073]
The speaker 110 aligns the sound emission surface 110 a with the sound emission hole 53 c.
The speaker fixing sheet metal 111 is fixed to the front duct 50 by the screws 112 and 113.
At this time, the speaker 110 is sandwiched between the speaker fixing plate 111 and the surface
53.
[0074]
<< Arrangement of Jack >> A rib 12 a extending to the inside from the main body exhaust port
12 of the appearance cover abuts on the duct exhaust port 120.
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The external terminals of the headphone terminal 8, the HDMI terminal 9, the USB terminal 10,
and the external power supply terminal 11 are arranged in the vertical direction on the front side
of the rib 12a.
The speaker 110 is provided on a portion surrounded by the surface 53, the external terminals,
and the main substrate 40.
[0075]
<< Operation of Speaker >> FIG. 10 shows operation control of the speaker 110.
[0076]
The knob of the mode switching unit 7a is slidable back and forth, and the front side is a
recording mode and the rear side is a reproduction mode.
[0077]
After "power on" S1, the mode switching unit 7a is operated to select "recording" S3 or
"reproduction" S7 in "mode selection" S2.
[0078]
When "record" S3 is selected, the operation proceeds to "start operation of fan" S4.
Therefore, after "cancellation sound is automatically selected" S5 to be described later,
"cancellation sound is emitted from the speaker" S6.
When "reproduction" S7 is selected in the "mode selection" S2, "fan does not operate" S8 is
obtained, and "sound reproduction sound is generated at image reproduction" S9.
[0079]
The details of the above-mentioned "cancel sound is automatically selected" S5 is shown in Fig.
11 "start the operation of the fan" S4 and "start the fan at the rotation speed of the initial setting"
S11 starts rotating the fan.
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[0080]
The main substrate 40 is provided with a temperature detection element (not shown), and the
substrate temperature is monitored at an arbitrary interval.
From "acquire substrate temperature" S12, the process proceeds to "temperature table check"
S13.
[0081]
FIG. 13 shows a temperature table.
[0082]
It is set to rotate at a fan rotational speed H2 according to the substrate temperature H1.
When the temperature is high via the "rotational speed setting" S14, the rotational speed is
increased to increase the heat radiation capability.
When the temperature is low, the heat is released quietly at a low rotational speed.
The above-mentioned default rotational speed is set at ni.
[0083]
At the time of product development, the fan sound frequency and sound pressure for each fan
speed can be grasped.
[0084]
From there, the cancellation sound H3 for each rotation speed is built in and recorded for each
condition.
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[0085]
The cancellation sound H3 is, for example, the sound of the fan in the duct collected in advance
for a predetermined period, converted into a digital signal, and the phase of this digital signal
inverted.
[0086]
In the above-mentioned Speak cancellation sound from the speaker S6, C1 to C3 of the
cancellation sound H3 are selected from the fan rotational speed at that time, and the optimum
cancellation sound is emitted.
[0087]
FIG. 12 shows control when headphones are connected during recording.
[0088]
After
select recording mode
S30, the process proceeds to
start operation of fan
S31.
[0089]
If the headphone plug is inserted into the headphone terminal 8 in "detect the state of the
headphone jack" S32, the process proceeds to "detect plug insertion" S33.
At this time, the operations of "release the cancellation sound of the fan from the speaker" S34
and "release the recording sound from the headphone" S35 are performed.
Here too, the cancellation sound corresponding to the aforementioned fan rotational speed is
emitted.
[0090]
In the case of "detect plug not inserted" in S36, the process proceeds to "Put off the cancellation
sound of the fan from the speaker" S37.
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[0091]
<< Summary >> As described above, according to the present embodiment, since a space for
fixing the speaker 110 to the exterior of the camera 1 is not required, the structure is
advantageous for the miniaturization of the product.
[0092]
In addition, since the speaker 110 is not fixed to the exterior part, chattering noise generated
between the exterior button and the exterior cover due to the vibration of the speaker is
prevented.
[0093]
The speaker 110 emits sound toward the inner surface side of the duct portion, and the speaker
sound is emitted from the main body exhaust port 12, but since the main body exhaust port 12 is
a sufficiently large opening, the sound is easily emitted to the outside.
[0094]
Furthermore, at the time of recording, although the cancellation sound of the fan sound is
emitted, since it can be put on the flow of the exhaust air, it is an optimal position for the
cancellation of the fan noise.
[0095]
Although the embodiments according to the present invention have been described in detail in
the preferred embodiments, the present invention is not limited to these specific embodiments,
and various embodiments within the scope of the present invention are also possible. Included in
the embodiment.
[0096]
DESCRIPTION OF SYMBOLS 1 camera, 2 body part, 3 grip part, 4 connection part, 5 lens exterior
part, 6 partial cylindrical shape part, 7a mode switching part, 7b power button, 7c operation part,
8 headphone terminal, 9 HDMI terminal, 10 USB Terminal, 11 external power terminal, 12 main
body exhaust port, 12a rib, 14 accessory shoe, 15, 16 strap bracket, 17 ZOOM ring, 18 focus
ring, 19 display section, 20 card lid, 21 image display section, 22 main body intake port , 30 lens
unit, 31 imaging device, 32 imaging substrate, 33 wire, 40 main substrate, 41a electrical
component, 41b electrical component, 50 front duct, 51 heat radiating rib, 52 surface, 52a
element contact surface, 52b element contact surface 53 face, 53 a boss, 53 b boss, 53 c sound
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release hole, 55 a boss, 55 b boss, 55 c boss, 55 d bo 60, rear duct, 71 fan inlet, 72 fan outlet, 70
fan, 73 radiation fin, 80 arrow indicating the flow of air, 90 microphone, 100a screw, 100b
screw, 100c screw, 100d screw, 110 speaker, DESCRIPTION OF SYMBOLS 110a Sound emission
surface, 111 speaker fixed sheet metal, 112 screw, 113 screw, 120 duct exhaust port, 121 duct
intake port, 130 trigger button, 210 image display part, 502 main imaging part, 503 camera
signal processing part, 504 compression expansion processing 5, 506 recording / reproduction
processing unit 507 card control unit 508 large capacity internal memory control unit 510 audio
signal processing unit 511 memory 512 memory control unit 514 operation unit 516 input /
output unit 517 power control unit 518 Data bus, 519 memory card, 520 large capacity
Memory, 521 external device, 522 external device, 523 battery, 524 reception unit, 524 GPS
reception unit, 525 GPS signal processing unit, 513 CPU, 515 digital I / F, 600 speaker control
unit, 800 duct unit, S1 "power on" S2 "Select mode" S3 "Record" S4 "Start fan operation" S5
"Cancel sound is automatically selected" S6 "Speak off cancellation sound from speaker" S7 "Play"
S8 "Fan does not operate", S9 "Don't play sound during image playback", S11 "Drive the fan at
the default rotation speed", S12 "Get board temperature", S13 "Temperature table check", S14
"Rotation" Number setting], H1 substrate temperature, H2 fan rotation speed, H3 cancellation
sound, S30 Select recording mode , S31 fan Start the operation, S32 "detect the state of the
headphone jack", S33 "detect plug insertion", S34 "discharge the cancellation sound of the fan
from the speaker", S35 "discharge the recording sound from the headphones", S36 "Detect plug
not inserted", S37 "Put off the cancellation sound of the fan from the speaker"
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