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JP2012065039

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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DESCRIPTION JP2012065039
To realize a cradle device which can be easily miniaturized while having a sound emitting part.
SOLUTION: A downward speaker SP is provided only on the bottom of the case 3A of the cradle
device 3. By doing this, as long as the bottom portion is sized according to the speaker SP, other
portions can be set to any size within the range in which the DAP 2 is not worn down. Thereby,
the housing 3A can be easily miniaturized. [Selected figure] Figure 1
Cradle device
[0001]
The present invention relates to a cradle device, and is suitably applied to, for example, a cradle
device having an audio output function.
[0002]
Conventionally, various cradle devices have been proposed as cradle devices for electronic
devices.
The cradle device of this type not only mounts the electronic device, but when the electronic
device is mounted, the connector provided on the mounting surface is inserted into the connector
on the electronic device side, and It electrically connects (for example, refer patent document 1).
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[0003]
Thus, for example, the cradle device can supply power to the electronic device to charge the
electronic device, or relay the electronic device and the external device to communicate between
the electronic device and the external device. ing.
[0004]
Also, as a cradle device for a digital audio player (hereinafter also referred to as DAP), a cradle
device with a speaker in which left and right speakers are provided on the front of a housing and
music supplied from DAP is output from this speaker Exists.
[0005]
JP, 2008-166951, A
[0006]
By the way, in the cradle apparatus with a speaker, the front part must be enlarged in
comparison with a general cradle apparatus not having a speaker because the speaker is
provided on the front part of the housing.
Furthermore, it is necessary to make the bottom of the housing as well as the front of the
housing larger (specifically, to make the depth longer) so that the housing does not fall down
even when the DAP is mounted.
[0007]
As described above, the conventional cradle apparatus with a speaker requires a large housing as
compared with a general cradle apparatus, and there is a problem that miniaturization is difficult.
[0008]
The present invention has been made in consideration of the above points, and an object thereof
is to propose a cradle device which can be easily miniaturized while having a sound emitting
portion (speaker).
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[0009]
In order to solve such problems, in the present invention, the housing, the mounting portion
provided at the upper end of the housing to which the electronic device is mounted, and the
mounting portion provided only at the bottom of the housing are mounted. And a sound emitting
unit having a downward diaphragm for emitting sound supplied from the electronic device.
[0010]
As described above, the sound output unit having the downward diaphragm is provided only on
the bottom of the housing.
By doing this, as long as the bottom of the case is sized according to the diaphragm of the sound
emitting part, the other parts have an arbitrary size within the range in which the electronic
device is not worn down. be able to.
That is, parts other than the bottom of the housing can be easily made smaller.
[0011]
According to the present invention, as long as the bottom of the housing is sized according to the
diaphragm of the sound emitting part, the other parts have an arbitrary size within the range in
which the electronic device is not attached even in the mounted state. can do.
In other words, the parts other than the bottom of the housing can be easily made smaller, thus
providing a sound emitting part on the front of the housing while having a sound emitting part
(speaker). Thus, a cradle device that can be easily miniaturized can be realized.
[0012]
It is a schematic diagram which shows the structure of an audio system.
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It is a basic diagram which shows the external appearance structure (1) of a cradle apparatus.
It is a basic diagram which shows the external appearance structure (2) of a cradle apparatus. It
is a basic diagram which shows the external appearance structure (3) of a cradle apparatus. It is a
basic diagram by which it uses for explanation of diffusion of the sound by a diffuser. It is a
schematic diagram by which it uses for description of a connection with an AC adapter. It is a
basic diagram which shows the structure (1) of a diffuser. It is a basic diagram which shows the
structure (2) of a diffuser. It is a basic diagram which shows each part detail (1) of a cradle
apparatus. It is a basic diagram which shows each part detail (2) of a cradle apparatus.
[0013]
Hereinafter, modes for carrying out the invention (hereinafter, referred to as embodiments) will
be described. The description will be made in the following order. 1. Embodiment 2. Modified
example
[0014]
<1. Embodiment> [1-1. Configuration of Audio System] In FIGS. 1A and 1B, 1 indicates an
audio system as a whole. The audio system 1 includes a DAP (digital audio player) 2 and a
speaker equipped cradle device 3 for the DAP 2. Here, the cradle device 3 with a speaker is also
simply referred to as the cradle device 3.
[0015]
In this audio system 1, the cradle device 3 is placed on an installation surface such as a floor, and
the DAP 2 is erected on the mounting surface 4 A of the mounting portion 4 provided on the
upper end of the housing 3 A of the cradle device 3. Place it. At this time, the cradle device 3 and
the DAP 2 are electrically connected by inserting the connector 4 B protruding from the
mounting surface 4 A into a connector (not shown) provided on the bottom of the DAP 2.
[0016]
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Here, when the music reproduction operation is performed on the DAP 2, an audio signal based
on the music data is supplied from the DAP 2 to the cradle device 3. Then, the sound based on
the sound signal is output from the speaker SP provided on the bottom of the case 3A of the
cradle device 3.
[0017]
As described above, in the audio system 1, the sound based on the music data stored in the DAP
2 can be output from the speaker SP of the cradle device 3.
[0018]
Furthermore, in the audio system 1, when the AC adapter 5 is connected to the housing 3A of the
cradle device 3, the battery of the DAP 2 is supplied by supplying the power input to the cradle
device 3 via the AC adapter 5 to the DAP 2. Can also be charged.
[0019]
As described above, in the audio system 1, when the DAP 2 is placed on the cradle device 3, the
cradle device 3 functions as an external speaker of the DAP 2 and also functions as a charger of
the DAP 2.
Hereinafter, the cradle device 3 will be described in more detail.
[0020]
[1−2.
External Configuration of Cradle Device] First, the external configuration of the cradle device 3
will be described with reference to FIGS. 2 to 4. As shown in FIG. 2 and FIG. 3, the casing 3A of
the cradle device 3 is in the form of an expanding bell like standing on the installation surface
such as a floor with the tip portion of a brass instrument such as trumpet facing downward.
There is.
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[0021]
Here, when viewed from the front of the cradle device 3, the direction from left to right is defined
as X direction, the direction from bottom to top as Y direction, and the direction from front to
back as Z direction.
[0022]
A mounting portion 4 is provided at the upper end portion of the housing 3A, and a connector 4B
is protruded from a mounting surface 4A formed in the mounting portion 4.
Further, a speaker SP is provided on the bottom of the housing 3A.
[0023]
In the mounting portion 4 of the housing 3A, a semi-disc-like front convex portion 4C and a rear
convex portion 4D extending upward are formed on the front side and the rear side of the
mounting surface 4A. Therefore, when the DAP 2 is mounted on the mounting surface 4A, the
lower end portion of the DAP 2 is sandwiched between the front side convex portion 4C and the
rear side convex portion 4D.
[0024]
Here, the mounting surface 4A has substantially the same shape (for example, a horizontally long
rectangular shape) as the bottom surface portion of the DAP 2 but is formed about several
millimeters larger in the front-rear direction than the bottom surface portion of the DAP 2.
[0025]
Thereby, when DAP 2 is mounted on mounting surface 4A, it is several millimeters between the
front side convex portion 4C and the rear side convex portion 4D located on the front and rear of
mounting surface 4A and the lower end portion of DAP 2. A gap occurs.
[0026]
This gap is for allowing the DAP 2 placed in the silicon cover or the clear case to be mounted to
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the mounting portion 4 as it is (that is, to be mounted on the mounting surface 4A).
[0027]
In fact, for example, when DAP 2 placed in a silicon cover is placed on the placement surface 4A,
the lower end portion of DAP 2 is sandwiched by the thickness of the silicon cover with almost
no gap between the front protrusion 4C and the rear protrusion 4D.
[0028]
Thus, the cradle device 3 can support the DAP 2 as it is in the silicon cover, by the front convex
portion 4C and the rear convex portion 4D and the connector 4B inserted into the connector of
the DAP 2, and the DAP 2 is placed It can be mounted in a stable state on the surface 4A.
[0029]
Further, the cradle device 3 is provided with an attachment 6 so that even the bare DAP 2 not
placed in the silicon cover or the clear case can be placed in a stable state.
[0030]
The attachment 6 can be detachably attached to the attachment portion 4, and when attached,
the attachment 6 has a front portion 6A of about several millimeters in thickness that contacts
the inner surface of the front side projection 4C and a rear side projection 4D. And a rear portion
6B having a thickness of several millimeters in contact with the inner surface.
[0031]
The cradle device 3 shown in FIG. 2 is in a state in which the attachment 6 is attached, and a
state in which the attachment 6 is removed is shown in FIG. 9 described later.
[0032]
Here, in actuality, it is assumed that the bare DAP 2 is placed on the placement surface 4A with
the attachment 6 attached.
Then, the front end 6A and the rear end 6B of the attachment 6 are positioned between the front
side convex portion 4C and the rear side convex portion 4D and the lower end portion of the
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bare DAP 2, so that the lower end portion of the bare DAP 2 Between the portion 6A and the rear
portion 6B, it is sandwiched with almost no gap.
[0033]
Thereby, the cradle device 3 can support the bare DAP 2 by the front convex portion 4C and the
rear convex portion 4D, the connector 4B inserted into the connector of the DAP 2, and the
attachment 6, and the mounting surface 4A Can be placed in a stable state.
[0034]
When the DAP 2 is placed, the cradle device 3 is inclined such that the mounting surface 4A of
the mounting unit 4 is not completely horizontal with respect to the installation surface such as a
floor but is lowered at the rear side. , And the front part of DAP 2 is directed obliquely upward.
[0035]
Incidentally, the term "horizontal" as used herein does not refer to being perpendicular to the
direction of gravity, but refers to being parallel to a mounting surface such as a floor on which
the cradle device 3 is placed.
[0036]
On the other hand, as shown in FIGS. 2 and 4A, the bottom of the housing 3A has a circular
shape that is sufficiently large compared to the upper end.
Further, as shown in FIGS. 2 and 3, the side surface portion of the housing 3A is formed of a
curve that smoothly spreads from the upper end portion to the bottom surface portion.
Thus, the housing 3A is in the form of a bell that spreads out as a whole.
[0037]
Further, by forming the housing 3A in such a shape, as shown in FIG. 1 (B), when the DAP 2 is
placed on the upper end portion of the housing 3A, the cradle device 3 as a whole is in an
integral form. It can be seen.
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[0038]
Further, as shown in FIG. 4A, a circular opening 3B which is slightly smaller than the bottom
surface portion is formed on the bottom surface portion of the housing 3A, toward the front of
the bottom surface portion.
Then, the front surface of the disk-like diaphragm SPa which is a part of the speaker SP and the
edge SPb provided on the outer periphery of the diaphragm SPa are exposed from the opening
3B so as to be parallel to the bottom surface. It has become.
That is, the speaker SP is disposed on the bottom of the housing 3A with the diaphragm SPa
facing downward.
[0039]
Further, as shown in FIGS. 3 and 4B, on the bottom of the housing 3A, a base plate 7 which is a
base of the housing 3A and which is concentric with the bottom is parallel to the bottom. There is
a clearance of several millimeters between them and it is attached.
The base plate 7 may have a size that covers the entire circular opening 3B and may be large
enough to support the housing 3A in a sufficiently stable manner. It has become a size.
[0040]
The base plate 7 not only functions as a base of the housing 3A, but also, as shown in FIG. 5, the
sound emitted downward from the downward speaker SP located on the bottom surface of the
housing 3A It also functions as a diffuser that diffuses horizontally from the gap between
Therefore, here, the base plate 7 is also referred to as a diffuser (diffuser plate) 7.
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The details of the diffuser 7 will be described later.
[0041]
Thus, the cradle device 3 horizontally diffuses the sound emitted from the downward speaker SP
located on the bottom surface portion of the housing 3A from the gap between the diffuser 7 and
the bottom surface portion, It can be made to be able to listen to the user who is ahead.
[0042]
Further, the cradle device 3 has a configuration in which the speaker SP having the diaphragm
SPa directed downward is provided only on the bottom surface portion of the housing 3A.
As a result, as long as the bottom portion is sized according to the speaker SP, other portions can
be set to any size within the range in which the DAP 2 is not attached even in the state of
wearing the housing 3A. It can be miniaturized.
[0043]
Further, as shown in FIG. 2, an AC adapter connection portion 8 having a semi-cylindrical shape
is formed on the rear side of the side surface portion of the case 3A of the cradle device 3 so as
to protrude rearward.
[0044]
The AC adapter connection portion 8 is provided with a downward circular hole shaped DC input
terminal 8B on the flat surface 8A at the upper end portion thereof.
As shown in FIG. 6, a cylindrical plug (not shown) provided at the cable distal end 5B of the cable
5A of the AC adapter 5 is inserted from above into the DC input terminal 8B, whereby the cradle
device 3 and The AC adapter 5 is connected.
[0045]
When the plug is inserted into the DC input terminal 8B, the cable tip 5B can be oscillated in the
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direction parallel to the flat surface 8A about the plug inserted into the DC input terminal 8B.
[0046]
Here, in fact, when the cable 5A of the AC adapter 5 is pulled, the cable tip 5B shakes its neck in
the pulled direction.
Thus, when the cable of the AC adapter 5 is pulled, the cradle device 3 can reduce the direct
application of the force to the housing 3A, thereby suppressing the housing 3A from tipping
over. .
[0047]
The flat surface 8A of the upper end portion of the AC adapter connection portion 8 is not
completely horizontal but inclined so that the rear side is lowered.
As a result, the cable 5A of the AC adapter 5 can be easily lowered from the upper end of the AC
adapter connection portion 8, and as a result, the cable 5A can be easily pulled around.
[0048]
[1−3.
Configuration of Diffuser] Next, the configuration of the diffuser 7 attached to the bottom of the
housing 3A will be described in more detail with reference to FIGS. 7 and 8.
[0049]
In the diffuser 7, four cylindrical column parts 7A extending upward are formed at equal
intervals on the outer periphery of the upper surface part facing the bottom surface part of the
housing 3A.
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[0050]
On the other hand, as shown in FIG. 4 (A), on the bottom of the housing 3A, four round holes of
diffuser mounting holes 3C are provided on the circumference outside the opening 3B inside the
outer circumference of the bottom It is formed at intervals.
[0051]
Specifically, as viewed from the center of the bottom portion, for example, diffuser mounting
holes 3C are formed at four positions of front left 45 degrees and right 45 degrees and rear left
45 degrees and right 45 degrees. ing.
[0052]
Then, the upper end portions of the four pillars 7A (FIG. 7) formed on the upper surface of the
diffuser 7 are inserted into the four diffuser attachment holes 3C, whereby the diffuser 7 is the
bottom of the housing 3A. Attached to
[0053]
At this time, the four pillars 7A formed on the upper surface of the diffuser 7A are positioned 45
degrees forward left, 45 degrees front right, 45 degrees rear left, 45 degrees rear right as viewed
from the center of the upper surface portion It will be done.
[0054]
In addition, when the four pillars 7A are attached to the bottom of the housing 3A, the height of
the space between the top of the diffuser 7 and the bottom of the housing 3A is increased. Is
selected.
[0055]
Here, the column 7A positioned 45 degrees left front is the front left column 7Aa, the column 7A
positioned 45 degrees right front is the front right column 7Ab, and the column 7A positioned
45 degrees left rear The rear left column 7Ac and the column 7A located at the rear right 45
degrees will be referred to as a rear right column 7Ad.
[0056]
Furthermore, on the upper surface portion of the diffuser 7, a mountain shape having a position
facing the center of the diaphragm SPa of the speaker SP disposed on the bottom surface portion
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of the housing 3A inside the four column portions 7Aa to 7Ad. The convex part 7B of is formed.
[0057]
When viewed from above, this convex portion 7B has a circular shape centered on the top, and
when attached to the housing 3A, viewed from the top, the front about 45 ° to the rear left and
45 ° to the rear right It consists of a front slope 7Ba included in the range of about 270
degrees, and a rear slope 7Bb included in the range of about 90 degrees behind the rest.
[0058]
The front inclined portion 7Ba is inclined so as to gradually descend from the top to a flat surface
outside the convex portion 7B.
Specifically, the inclination of the front inclined portion 7Ba is, for example, shaped to draw a
curve that curves downward.
The flat surface on the outside of the convex portion 7B is a surface parallel to the diaphragm
SPa of the speaker SPa.
[0059]
On the other hand, a recess dug down below the flat surface is formed at the central portion of
the rear inclined portion 7Bb.
The rear inclined portion 7Bb is inclined so as to descend at a steeper angle than the front
inclined portion 7Ba from the top to the recess, and is further inclined to gradually rise from the
recess to the outer flat surface.
[0060]
Furthermore, a wall portion 7C perpendicular to the flat surface is formed on the upper surface
portion of the diffuser 7 so as to extend from the rear left pillar 7Ac to the rear right pillar 7Ad
behind the rear inclined portion 7Bb.
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[0061]
The wall 7C has a bowed forward shape, and the height thereof is selected to be equal to the
width of the gap between the bottom of the housing 3A and the upper surface of the diffuser 7.
[0062]
Therefore, when the diffuser 7 is attached to the bottom of the housing 3A, the rear of the rear
inclined portion 7Bb is closed by the wall 7C.
[0063]
In a state where the diffuser 7 having such a configuration is attached to the bottom surface of
the housing 3A, it is assumed that sound is emitted downward from the downward speaker SP
provided on the bottom surface of the housing 3A.
[0064]
Then, a part of this sound is diffused horizontally in the range of about 270 degrees forward by
the inclination of the front inclined portion 7Ba of the convex portion 7B, and as shown in FIG.
The air is released from the gap between the diffuser 7 and the top surface.
[0065]
Thus, the diffuser 7 can diffuse the sound emitted downward from the downward speaker SP
horizontally in the range of about 270 degrees forward with the housing 3A as the center.
[0066]
By doing this, the cradle device 3 can cause the listener located in front of the cradle device 3 to
listen to the sound emitted downward from the downward speaker SP provided on the bottom of
the housing 3.
[0067]
Also, the cradle device 3 spreads the sound in the horizontal direction within a range of about
270 degrees forward about the housing 3A to widen the directivity of the sound, so that the
position of the listener is shifted from the front of the housing 3A. Also, the listener can hear a
sufficiently good sound.
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[0068]
Furthermore, the cradle device 3 can cause the listener to listen to a broad sound by spreading
the sound and broadening the directivity in this manner.
[0069]
Furthermore, part of the sound emitted downward from the downward speaker SP is directed
rearward by the inclination of the rear inclined portion 7Bb of the convex portion 7B, and is
reflected by the wall portion 7C formed at the rear of the rear inclined portion 7Bb Head
forward.
That is, the wall portion 7C functions as a reflector that reflects the sound directed rearward to
the front.
[0070]
As described above, the diffuser 7 is configured to reflect, to the wall portion 7C, a sound that is
intended to escape backward among the sounds emitted downward from the downward speaker
SP, and to direct it forward.
[0071]
As a result, in the listener located in front of the cradle device 3, the sound diffused forward by
the front inclined portion 7Ba of the convex portion 7B of the diffuser 7 and the sound reflected
forward by the wall 7C are synthesized. Will be delivered.
[0072]
Here, since the convex portion 7B is formed in front of the wall 7C, among the components of the
sound reflected by the wall 7C, mainly the low frequency component turns forward, and as a
result, the sound diffused forward. The low frequency component of is enhanced.
[0073]
By doing this, the cradle device 3 can cause the listener to listen to the sound in which the low
frequency component is enhanced.
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[0074]
Moreover, the diffuser 7 can reflect the sound which it is going to escape backward by making
the wall 7C bow like a front, so that it may fan-likely spread forward by this wall 7C.
[0075]
By doing this, the cradle device 3 combines the sound reflected by the wall 7C and the sound
diffused forward by the front inclined portion 7Ba of the convex portion 7B without narrowing
the directivity of the sound. , Can enhance the bass.
[0076]
Furthermore, in the diffuser 7, due to the depression formed in the rear inclined portion 7Bb, the
sound attenuation caused by the backward sound and the sound reflected by the wall 7C being
canceled out between the rear inclined portion 7Bb and the wall 7C. Can also be reduced.
[0077]
Thereby, the diffuser 7 can efficiently direct the sound reflected by the wall 7C to the front, and
can more effectively enhance the low frequency component of the sound.
[0078]
As described above, while the cradle device 3 has a configuration in which only one speaker SP is
provided on the bottom of the small-sized housing 3A, the diffuser 7 enables wide directivity and
rich low-frequency reproduction. Is realized.
[0079]
[1−4.
Details of Each Part of Cradle Device] Next, details of each part of the cradle device 3 will be
described with reference to FIGS. 9 and 10.
The cradle device 3 includes the housing 3A, the diffuser 7 and the attachment 6 as described
above.
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[0080]
The housing 3A is composed of the top cover 10 whose exterior is a side surface from the upper
end, and the baffle plate 11 forming the bottom, and the baffle plate 11 is fixed to the bottom of
the top cover 10 with a screw. It has become so.
[0081]
The baffle plate 11 is a plate to which the speaker SP is attached as the name implies, and the
speaker SP is attached such that the diaphragm SPa and the edge SPb are exposed to the outside
from the opening 3B formed in the baffle plate 11 .
[0082]
Here, the anti-vibration cushion 12 is sandwiched between the speaker SP and the baffle plate 11
so that the vibration of the speaker SP is not directly transmitted to the baffle plate 11 and the
top cover 10.
[0083]
Further, the top cover 10 has a bracket 15 for holding the main substrate 13 on which various
circuits such as a power supply circuit and an amplifier circuit are formed at predetermined
positions inside and the silicon damper 14 for absorbing the force applied to the connector 4B. Is
fixed by a screw.
[0084]
A DC input terminal 8B is fixed to the main substrate 13, and the DC input terminal 8B and a
circuit on the main substrate 13 are connected.
The circuit on the main board 13 operates with the power supplied from the AC adapter 5
through the DC input terminal 8B.
[0085]
Further, the connector substrate 17 is connected to the circuit on the main substrate 13 via the
wiring cable 16 and the speaker SP is connected via the wiring cable (not shown).
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17
[0086]
The connector substrate 17 has a rectangular shape, the connector 4B is fixed to the upper
surface portion, and the wiring cable 16 is connected to the bottom surface portion.
[0087]
The connector substrate 17 is covered with the connector holder 18 at the side surface portion,
and in this state, the connector substrate 17 is attached to the damper 14 by being inserted into
the vertically penetrating mounting hole 14A formed in the damper 14.
[0088]
The mounting hole 14A has the same shape and size as the side surface portion of the connector
holder 18, whereby the connector substrate 16 covered by the connector holder 18 is mounted
in close contact with the mounting hole 14A of the damper 14 without a gap. Ru.
[0089]
Thus, in the cradle device 3, the connector substrate 17 to which the connector 4B is fixed is not
directly fixed to the inside of the housing 3A, but is attached to the damper 14 made of silicon,
and the damper 14 is mounted to the housing 3A. It fixed to the inside of.
[0090]
By doing this, in fact, when a force is applied to the connector 4B, the damper 14 made of silicon
is deformed and the connector substrate 17 is inclined together with the connector 4.
As a result, it is possible to avoid a situation where the force applied to the connector 4B is
directly applied to the connection portion between the connector 4B and the connector substrate
17 and the connector 4B is broken.
[0091]
Thus, the cradle device 3 is also configured to improve the strength around the connector 4B of
the housing 3A.
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[0092]
Further, in this case, it is only necessary to interpose the damper 14 made of silicon between the
connector substrate 17 and the bracket 15, and the strength can be improved with a simple
configuration.
[0093]
On the other hand, the diffuser 7 is fixed to the baffle plate 11 by a screw.
Further, a rubber ring-shaped foot 19 is fixed to the bottom of the diffuser 7, and a machine
name plate 20 with a model name and the like is fixed to the inside of the foot 19.
[0094]
The foot 19 is thicker than the machine name plate 20, and the foot 19 is a portion in contact
with the floor or the like.
[0095]
[1−5.
Operation and Effect] In the above configuration, the cradle device 3 is provided with the
downward speaker SP on the bottom of the flared bell-shaped housing 3A as if the tip of the
brass instrument such as trumpet is faced downward. It has a configuration.
[0096]
As described above, by providing the speaker SP downward only at the bottom of the housing 3A,
the DAP 2 is attached to the other parts as long as the bottom has a size corresponding to the
speaker SP. It can be of any size as long as it does not fall down in the state.
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Thereby, the housing 3A can be easily miniaturized.
[0097]
Further, in the cradle device 3, the diffuser 7 is attached to the bottom of the housing 3 A so that
a gap of about several millimeters is formed between the cradle 3 and the bottom of the housing
3 A.
[0098]
The diffuser 7 is formed with a mountain-like convex portion 7B whose top is a position opposed
to the center of the diaphragm SPa of the speaker SP provided on the bottom of the housing 3A.
[0099]
The cradle device 3 diffuses the sound emitted downward from the speaker SP in the horizontal
direction by the convex portion 7B and emits the sound from the gap between the bottom
portion of the housing 3A and the diffuser 7.
[0100]
By doing this, the cradle device 3 can cause the listener in front of the cradle device 3 to listen to
the sound emitted downward from the speaker SP.
[0101]
The cradle device 3 also spreads the directivity of sound by diffusing the sound emitted from the
speaker SP by the convex portion 7B.
[0102]
Furthermore, the diffuser 7 is configured to enhance the low frequency component of the
emitted sound by reflecting forwardly the sound that is about to escape backward by the wall 7C
formed behind the convex portion 7B. There is.
[0103]
Thus, the cradle device 3 can realize wide directivity and rich low-range reproduction while
having a configuration in which only one speaker SP is provided on the bottom of the small-sized
housing 3A.
03-05-2019
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[0104]
According to the above configuration, the cradle device 3 can easily miniaturize the housing 3A
while having the speaker SP, and while being a small housing 3A, it has wide directivity and rich
low frequency range. It has become possible to realize the reproduction.
[0105]
<2.
Modified Example> [2-1.
Modification 1] In the embodiment described above, the case where the present invention is
applied to the cradle device 3 on which the DAP 2 is placed has been described.
For example, the present invention may be applied to a speaker device in which the mounting
portion 4 is removed from the cradle device 3 and a speaker terminal is provided on the rear side
of the side surface portion of the housing 3A.
[0106]
Further, the cradle unit 3 is not provided with the mounting unit 4, and a storage unit for storing
music data, a reproduction unit for reproducing music data, and an audio amplification unit such
as a digital amplifier are provided inside the housing 3A. The present invention may be applied to
a music playback device.
[0107]
That is, the present invention can be applied to various other electronic devices as long as the
speaker is disposed only at the bottom of the housing.
[0108]
[2−2.
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21
Modification 2] In the embodiment described above, one speaker SP is provided on the bottom of
the housing 3A. However, the present invention is not limited thereto. For example, two speakers
SP may be provided on the bottom of the housing 3A. A plurality of speakers may be provided by
arranging the speakers side by side and the like.
[0109]
In this case, convex portions corresponding to the respective speakers may be provided on the
upper surface portion of the diffuser 7 or the like.
[0110]
[2−3.
Modification 3] Furthermore, in the embodiment described above, the mounting portion 4 is
provided at the upper end portion of the housing 3A. However, the present invention is not
limited to this. The mounting portion 4 is provided at an arbitrary position of the housing 3A
May be
[0111]
For example, a portion projecting forward may be formed on the side surface of the housing 3A,
and the mounting portion 4 may be provided on this portion.
[0112]
[2−4.
Modified Example 4 Furthermore, in the embodiment described above, each circuit of the cradle
device 3 is operated by the power supplied from the AC adapter 5 via the DC input terminal 8B
as an external connection terminal.
03-05-2019
22
For example, when the AC adapter 5 is not connected, power may be obtained from the DAP 2
through the connector 4B, and the circuits of the cradle device 3 may be operated with this
power.
[0113]
In addition, the AC adapter connection unit 8 may be removed from the housing 3A, and the
circuits of the cradle device 3 may be operated only by the power obtained from the DAP 2.
In this case, as a matter of course, DAP 2 can not be charged, but portability improves.
[0114]
Further, in place of the AC adapter connection portion 8 behind the side surface portion of the
housing 3A, a USB connection portion is formed, and a USB cable is connected to the USB
connection terminal provided in the USB connection portion. Power may be obtained via USB.
[0115]
Furthermore, in this case, the cradle device 3 can also serve as a relay, and data communication
can be performed between the DAP 2 placed on the cradle device 3 and a device connected to
the cradle device 3 by USB.
[0116]
[2−5.
Modification 5] Furthermore, in the embodiment described above, the connector substrate 17
covered with the connector holder 18 is attached to the damper 14 made of silicon.
[0117]
Not limited to this, as long as the damper is an elastic material that can absorb the force applied
to the connector 4B, a rubber damper other than silicon may be used, or a spring may be used
instead of the damper.
03-05-2019
23
[0118]
[2−6.
Modification 6] Furthermore, in the embodiment described above, the shape of the housing 3A is
in the form of an expanding bell like a trumpet or other brass instrument with its tip end facing
downward.
The present invention is not limited to this, and as long as the speaker SP is provided only on the
bottom surface, other various shapes such as a barrel, a cylinder, a cone, and a box may be used.
[0119]
[2−7.
Modification 7] Furthermore, in the embodiment described above, the wall 7C is provided behind
the convex 7B on the upper surface of the diffuser 7, and this wall 7C reflects the sound to be
released to the rear forward. I let it go.
[0120]
Not limited to this, the wall portion 7C may be removed from the upper surface portion of the
diffuser 7.
In this case, the sound escapes rearward and the low frequency component is not enhanced, but
the sound is also emitted behind the casing 3A, and the directivity of the sound is broadened.
Further, in this case, since there is no wall portion 7C, the rear inclined portion 7Bb of the convex
portion 7B may be inclined similar to the front inclined portion 7Ba.
03-05-2019
24
[0121]
Further, the present invention is not limited to this, the position and height of the top of the
convex portion 7B, the shape of the slope, the range of the front slope 7Ba and the rear slope
7Bb, the length of the wall 7C, the height, the warp, and the pillar 7A. The position, the number,
the shape, the height and the like may be different from the above-described embodiment.
[0122]
In fact, changing these changes the sound emitted from the cradle device 3.
Therefore, these may be changed in accordance with the directivity required by the audio system
1, the amount of bass, and the like.
[0123]
For example, the wall 7C may be bent backward instead of forward, or the position of the top of
the convex portion 7B may be moved to the center of the wall 7C, or the column 7A may be
moved to three places in total: front left, right and rear It may be provided.
[0124]
Further, the shape of the diffuser 7 itself is also circular in the above-described embodiment, but
not limited to this, it may be other various shapes such as a triangle and a square.
[0125]
[2−8.
Modified Example 8 Furthermore, in the above-described embodiment, the diffuser 7 is fixed to
the bottom of the housing 3A with a screw.
Not limited to this, the housing 3A and the diffuser 7 may be integrally molded.
03-05-2019
25
In this case, for example, the housing 3A integrally formed with the diffuser 7 may be configured
by parts on the front side and parts on the back side, and these may be fixed by screws.
[0126]
[2−9.
Modification 9] Furthermore, in the embodiment described above, the diffuser 7 is attached to
the bottom surface portion in parallel with the bottom surface portion of the housing 3A.
In this case, the bottom of the housing 3A is parallel to the installation surface.
[0127]
Not limited to this, for example, in the column 7A of the diffuser 7, the front column 7A is made
higher than the rear column 7A, etc., and the bottom of the housing 3A is inclined so that the
front side rises. You may do so.
[0128]
In this way, since the direction of the diaphragm SPa of the speaker SP is not downward but
downward, the sound can be easily diffused forward.
[0129]
[2−10.
Modified Example 10 Furthermore, in the embodiment described above, the attachment 6 is
prepared so that the attachment 6 can be attached to the cradle device 3 in a stable state,
whether it is naked DAP 2 or DAP 2 in a silicon cover or clear case.
03-05-2019
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[0130]
Not only this but attachment corresponding to each of DAP2 which has other various shapes may
be prepared.
[0131]
[2−11.
Modification 11] Furthermore, the present invention is not limited to the embodiment and the
modification described above.
That is, the scope of the present invention extends to a form in which part or all of the
embodiment and the modification described above are arbitrarily combined or a form in which a
part is extracted.
[0132]
The present invention can be widely used, for example, as a cradle device equipped with a
speaker.
[0133]
DESCRIPTION OF SYMBOLS 1 ...... Audio system, 2 ...... DAP, 3 ...... Cradle apparatus, 3A ............
Housing | casing 4 ... Mounting part 4B ...... Connector 5: AC adapter 6 ...... Attachment 7: Diffuser,
7B: Convex part, 7C: Wall part, 14: Damper, SP: Speaker, SPa: Diaphragm.
03-05-2019
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