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JP2015041833

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2015041833
An object of the present invention is to provide a vertically long speaker device having a high
degree of freedom in design without losing its function as a speaker device. A speaker device has,
for example, a vertically long casing whose height is at least 10 times the base. The housing is
formed by joining a plurality of vertically divided members in the front-rear direction, and a
sheet-like member is attached across the junction of the plurality of members joined to the
surface. The sheet-like member is preferably, for example, artificial leather having a thickness of
0.5 mm or more. [Selected figure] Figure 6
Speaker device
[0001]
The present invention relates to a longitudinal or columnar speaker device.
[0002]
The speaker device generally has a rectangular parallelepiped casing as shown in Patent
Document 1 and the like.
One side of the rectangular parallelepiped is a baffle plate to which the speaker unit is attached,
and the baffle plate is installed facing the user.
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1
[0003]
JP, 2008-160489, A
[0004]
The shape of the above speaker device is a reasonable shape in terms of stability and space
efficiency, but there is no change in shape and there is no diversity in design.
[0005]
An object of the present invention is to provide a speaker device in which the degree of freedom
in design is enhanced without losing the function as the speaker device.
[0006]
The present invention is a speaker device having a vertically elongated casing formed by joining
a plurality of longitudinally divided members in the front and back direction, and a sheet-like
member is provided by straddling a junction of a plurality of members on the surface of the
casing. It is characterized in that it is pasted.
[0007]
In the present invention, the case may be formed into a columnar shape, and the height may be
10 times or more of the side, the opposite side or the diameter of the bottom.
[0008]
In the present invention, a baffle plate may be provided on the back of the housing, and the
sheet-like member may be attached to the entire circumference from the opposite surface of the
baffle plate.
[0009]
In the present invention, artificial leather having a thickness of 0.5 mm or more may be used as
the sheet-like member.
[0010]
In the present invention, the upper speaker box is divided into a plurality of layers in the up and
down direction, and the upper layer box includes the opening of the upper surface and the first
speaker unit is accommodated in the plurality of layers. A middle tier box in which the unit is
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housed and a lower tier box in which the electronic circuit is housed may be included.
[0011]
According to the present invention, it is possible to increase the degree of freedom in the design
of the housing, such as making the speaker device vertically long and columnar without
impairing its function.
[0012]
External view of the speaker device according to an embodiment of the present invention
Internal configuration of the speaker device Rear view of the speaker device with the speaker
grille removed Detached view of the front and rear housings of the speaker device Diagram
showing front and rear housing and front sheet Diagram showing the assembly process of a
perspective view of the head piece provided on the upper end of the speaker device Diagram
showing an example of the installation form of the speaker device
[0013]
Hereinafter, a speaker device according to an embodiment of the present invention will be
described with reference to the drawings.
FIG. 1 is an external view of a speaker device according to an embodiment of the present
invention, FIG. 1 (A) is a front view, FIG. 1 (B) is a right side view, and FIG. 1 (C) is a rear view.
FIG. 2 is an internal configuration diagram of the speaker device.
FIG. 3 is a rear view of the speaker device from which the speaker grille has been removed.
[0014]
The speaker device 1 according to the embodiment of the present invention includes a housing
11 in which a plurality of speakers are accommodated, a disk-shaped base 14 supporting the
housing 11 from a floor surface, and a rod-shaped member connecting the housing 11 and the
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base 14 The pillow 13 has.
The housing 11 is supported by the pillow 13 and the base 14 and vertically erected.
[0015]
The housing 11 has a substantially square prism shape, and the width thereof is narrowed
slightly upward.
That is, it is exactly a quadrangular frustum shape (a shape obtained by cutting the apex side
(head) of the quadrangular pyramid horizontally with a plane parallel to the bottom surface).
The side surface of the housing 11 is inclined by 2 percent with respect to the vertical line.
The speaker device 1 is installed with the ridgeline portion 19 sandwiched between the two side
faces in the front (user direction).
In the following description, the front direction is called front, and the back direction is called
back.
Moreover, the direction when the speaker apparatus 1 is seen from the user of a front direction
is used for right and left direction.
[0016]
In the speaker device 1, the speaker unit is provided not backward but backward.
Therefore, as shown in FIGS. 1B and 1C, the speaker grille 12 is provided on the back side of the
housing 11. As a result, it is not necessary to provide the speaker grille 12 on the front side of
the speaker device 1.
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[0017]
As shown in FIGS. 1 and 2, the inside of the housing 11 is partitioned by two partition plates, and
has a structure having three spaces in the vertical direction. A mid-range speaker box 30 for
accommodating the speaker unit 20 in the upper space, a stereo speaker box 31 for
accommodating the speaker units 21 and 22 in the center, and a circuit box 32 for
accommodating the electronic circuit in the lower space. .
[0018]
As shown in FIGS. 2 and 3, the stereo speaker box 31 is open on the back side, and a baffle plate
24 is provided in this opening. The speaker units 21 and 22 and the bass reflex port 23 are
attached to the baffle plate 24. The speaker unit 21 is a speaker unit of the right channel, and is
attached obliquely toward the rear right. The speaker unit 22 is a speaker unit of the left channel,
and is attached obliquely toward the rear left. The bass reflex port 23 opens inside the stereo
speaker box 31 via a duct. The baffle plate 24 is covered by the speaker grille 12. As shown in
FIG. 1 (B), the speaker grille 12 is made of a metal mesh formed substantially flush with the
housing 11.
[0019]
The midrange speaker box 30 is open at the top, and the speaker unit 20 is attached upward at
this opening. Further above the speaker unit 20, a headpiece 10 is provided which reflects the
sound emitted from the speaker unit 20 to the front.
[0020]
Here, the housing 11 will be described with reference to FIGS. 4 to 6. FIG. 4 is an exploded view
of the front and rear housings 11A and 11B. FIG. 5 is a view showing the front and rear housings
11A and 11B and the front sheet 11C, and FIG. 6 is a view showing an assembling process of the
housing 11.
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[0021]
As shown in FIGS. 4 and 5, the casing 11 having a substantially square prism shape is composed
of a precursor 11A, a posterior member 11B, and a top sheet 11C. The front housing 11A is
formed of a front portion obtained by dividing the housing 11 of a substantially square prism
into two on the left and right sides (edges), and the rear housing 11B is a housing 11 of the
substantially square prism with the left and right sides as a boundary It consists of the part after
the division. The front and rear housings 11A and 11B are resinous and have a thickness of
about 2.5 mm. The top sheet 11C is made of artificial leather and adhesive tape, and has a
thickness of about 1 mm.
[0022]
The internal configuration view of FIG. 2 is a perspective view of the speaker device 1 with the
front housing 11A removed, viewed obliquely from the front. The baffle plate 24 is formed as a
part of the rear case 11B, and the speaker units 21 and 22 are attached to the baffle plate 24 as
shown in FIG. The outer casing 11A has a smooth shape that achieves the appearance of the
front surface of the device shown in FIG. 1, and the inner casing is formed with a large number of
ribs longitudinally and laterally to increase the strength of the housing 11.
[0023]
FIG. 6 is a view showing the assembling process of the housing 11 as viewed from the opposite
direction (rear) to FIG. FIG. 6A shows a process of bonding the front and rear housings 11A and
11B and fixing them with 32 screws. Screw holes are formed in the rear housing 11B for
inserting screws. Further, FIG. 6 (B) is a view showing a process of covering the top and bottom
casings with the top sheet 11C. As shown in FIGS. 5 and 6 (B), the front sheet 11C is cut out in
the shape of the casing 11 in advance, and the front and rear casings are wound in a lateral
direction centering on the ridgeline portion 19 on the front of the casing. It is pasted across 11A
and B. Thus, the top sheet 11C is a sheet that covers the four side surfaces of the housing 11
with one sheet. The surface sheet 11C is attached to the entire casing 11 centered on the front of
the housing 11. Therefore, the boundaries of the surface sheet 11C can not be seen from the
front, and a smooth appearance without breaks can be seen from the user's line of sight. Further,
the surface sheet 11C can also hide a large number of screw holes shown in FIG. 6 (A). The
screws on the baffle plate 24 and the screw holes in the electronic circuit box 32 are hidden by
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the speaker grille and the lid of the electronic circuit box 32, respectively. Further, since the top
sheet 11C is pasted across the junction of the front housing 11A and the rear housing 11B, the
front sheet 11C reinforces this junction and prevents deformation and air leakage.
[0024]
In the case of the vertically long structure (for example, the height is 10 times or more of the
maximum diameter of the bottom surface) as the speaker device 1 of the present embodiment,
the center of gravity at the time of installation is high and stable compared to the conventional
simple box type structure. Lack. Therefore, the thickness of the resin of the front and rear
housings 11A and 11B is reduced from the general 3 mm to 2.5 mm, and the weight of the upper
portion is reduced to improve the stability. On the other hand, in the structure in which the
longitudinally long front and rear housings 11A and 11B are joined, deformation such as twisting
easily occurs. Furthermore, when a large rib for reinforcement is provided inside the casing in
order to prevent deformation, the surface of the casing may have sinks associated with the
formation of the rib, and the appearance may be deteriorated. In addition, when the thickness of
the housing 11 is thin, the housing 11 itself may vibrate with the sound emission of the speaker
units 21 and 22 to generate noise (box sound).
[0025]
In this embodiment, these problems are solved by attaching the surface sheet 11C to the surfaces
of the front and rear housings 11A and 11B. The surface sheet 11C has a thickness of about 1
mm and a total thickness of about 1 mm, and the sheet body of artificial leather is about 0.8 mm
and the double-sided adhesive tape for attachment is about 0.2 mm. Even if the thickness is
about 1 mm, the sheet is lighter in weight than the resin, and the reduction in weight is not lost.
This thickness may be determined by the balance between the vibration damping property and
the air tightness, which will be described later, and the weight, and may be about 0.5 mm to 2
mm. In addition, the vinyl chloride (PVC) sheet ¦ seat stuck as a general decorative board is about
0.2 mm in thickness. By attaching a thick front sheet 11C to the entire circumference of the front
and rear housings 11A and 11B, deformation is suppressed and air leakage is eliminated
(airtightness), vibration is suppressed and box noise is prevented (vibration suppression), It hides
the sink marks and screw holes in the ribs to improve the aesthetic appearance.
[0026]
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FIG. 7 is a perspective view of the head piece. The head piece 10 includes an upper main body
portion 101 having a sound outlet 110, a top plate 102 disposed on the upper surface of the
main body portion 101, and a lower skirt 106. The shape of the main body portion 101 is a
substantially cube. In the bottom plate 103 of the head piece 10, a circular opening 103A is
formed at the center thereof. The aperture of the opening 103A is substantially the same as the
aperture of the speaker unit 20.
[0027]
Inside the main body portion 101, an apex 105C on the lower side of the side sandwiched
between the two side surfaces 113 and 114 as the back plate 104 and two side surfaces 111 and
112 as the sound emission port 110 (notched) The reflectors 105 (105A, 105B) are formed,
which are two triangular surfaces connecting with the upper side of the. Since the main body
portion 101 is substantially cubic, the left and right surfaces 105A and 105B of the reflector 105
form an angle of about 45 degrees with respect to the horizontal surface of the bottom plate 103
and the like.
[0028]
The sound emitting surface of the speaker unit 20 is disposed below the head piece 10 and
directly upward on the same central axis. Further, the surface of the reflector 105 of the head
piece 10 is disposed to face the sound emitting surface of the speaker unit 20, and the inclination
angle thereof is about 45 degrees. Therefore, the sound emitted upward from the speaker unit 20
is reflected by the reflector 105 as shown by an arrow 201 shown in FIG. 7 and is propagated so
as to spread to the left and right diagonally forward. As a result, even if sound is emitted upward
from the speaker unit 20, it can be reflected by the reflector 105 and propagate with little loss
from the front side of the side surface of the housing 11 to the front left and right.
[0029]
FIG. 8 is a view showing an example of an installation mode of the speaker device 1. The speaker
device 1 is installed at a corner (for example, a corner) of a room with a wall at the back. When
the speaker device 1 is installed with the back side facing the wall of the room, the sound emitted
from the speaker units 21 and 22 is reflected by the wall surface. As a result, even the sound
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emitted from the slim case can be made to sound with a spread. At this time, although the sound
in the middle band becomes unclear due to the reflection on the wall, in the present embodiment,
since the sound in the middle band is emitted from the speaker unit 20, the entire band of the
sound in the left and right channels is clearly reflected. be able to. In addition, since the speaker
unit and the speaker grille are not provided on the front surface of the housing 11, the degree of
freedom in the design on the front side is also increased.
[0030]
The shape of the casing 11 of the speaker device 1 is not limited to the quadrangular frustum
shape, and may be a generally cylindrical shape such as a truncated cone shape, a cylindrical
shape, or a polygonal pillar shape. Further, the shape and number of divisions of the housing 11
are not limited to this embodiment. Moreover, although the synthetic leather is suitable for the
material of the surface sheet 11C, it is not limited to this. For example, it may be cloth or the like.
[0031]
Reference Signs List 1 speaker device 10 head piece 11 housing 11A front housing 11B rear
housing 11C front sheet 20, 21, 22 speaker unit 30 mid-range speaker box 31 stereo speaker
box 32 circuit box
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