close

Вход

Забыли?

вход по аккаунту

?

JP2014225734

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2014225734
Abstract: [Problem] It is possible to emit high-quality sound in middle to high range and high
range with high healing effect and comfort effect while aiming at effective use of a drive unit. A
housing (10) of hollow structure, a drive unit (20) housed in the housing (10), and a curved
diaphragm (30) in contact with the housing (10) are provided. The vibration of the diaphragm 21
of the drive unit 20 is transmitted to the curved diaphragm 30 and the housing 10, and the
diaphragm 21, the curved diaphragm 30, and the housing 10 of the drive unit 20 emit sound.
[Selected figure] Figure 3
Speaker device
[0001]
The present invention relates to a speaker device that generates a transverse wave.
[0002]
A speaker device in which a plurality of horn-shaped and cone-shaped speakers corresponding to
different sound ranges (low range, middle range, high range) are assembled to a baffle plate on
the front of a speaker box has been known for a long time.
[0003]
Patent Documents 1 and 2 disclose flat-type speaker devices that do not have a speaker box.
10-05-2019
1
In the flat type speaker device, a plurality of ribs are fixed on the surface side of the plate-like
diaphragm to maintain the bending state of the diaphragm, and different sound ranges are
provided on the back side of the curved diaphragm. Sound is generated by vibrating the
diaphragm via a plurality of voice coils.
[0004]
Since a plurality of ribs inhibit the vibration of the diaphragm, it is known that the loudspeaker
made of a plate-shaped diaphragm has lower reproduction performance in the high range and
the low range as compared with the middle range.
Patent Document 3 proposes a flat-type speaker device that compensates for the reproduction
performance in the high-frequency range by providing an opening at the center of the plate-like
diaphragm and additionally providing a cone-shaped speaker for high-frequency range in the
opening. There is.
[0005]
Japanese Patent Publication No. 4-64240 Japanese Patent Publication No. 3-79920 Japanese
Patent No. 2510607
[0006]
The conventional speaker device has the following problems.
<1> A speaker device in which a plurality of horn-shaped and cone-shaped speakers are
assembled is suitable for reproduction of a plurality of sound ranges and has a characteristic
such as high directivity of sound, but a compression wave of air (longitudinal wave) Because of
this, the sound propagation characteristics are bad and the sound is attenuated in proportion to
the distance, and the compression wave interferes. Furthermore, since the sound emitted from
the speaker device is a compressional wave (longitudinal wave) of air, it is difficult to talk in a
loud sound environment. Although the <2> flat type speaker device can achieve compactness of
the device, the reproduction performance of the high range and the low range is low. For
example, music using a stringed instrument, and high-pitched sounds such as opera can not be
10-05-2019
2
easily overshadowed and can not be reproduced clearly, but it is also difficult to reproduce lowpitched sounds such as drum sounds and bass sounds. In a flat type speaker device in which a
known cone-shaped speaker is combined with a <3> plate-shaped diaphragm, it is technically
difficult to adjust the volume balance of the cone-shaped speaker and the plate-shaped
diaphragm. The <4> flat type speaker device has a problem that the maximum volume is lower
than that of the cone type speaker. When the volume of the flat-type speaker device is forcedly
increased, sound split (so-called chatter of sound) occurs. From the above reason, the flat type
speaker device is delayed in practical use because many problems to be solved are left unsolved.
[0007]
The present invention has been made to solve the above problems, and an object thereof is to
provide at least one of the following speaker devices. <1> Able to emit high-quality sound in the
middle and high range and low range while reducing the number of component parts. <2>
Effective utilization of the drive unit should be achieved. <3> Increasing the bending deformation
of the diaphragm to improve the volume. <4> Providing a speaker device having a high healing
effect and comforting effect. <5> To provide a high-value-added speaker device having a function
as an interior.
[0008]
The present invention comprises a hollow structure, one or more drive units which are
accommodated in the case and vibrates a diaphragm, and a curved diaphragm or plates having a
flat plate erected on the upper surface of the case. And the diaphragm of the drive unit is
exposed to a part of the surface of the housing, and a part of the base end of the curved
diaphragm is in contact with the diaphragm of the drive unit, and a curved vibration is generated.
The curved diaphragm is compressed and deformed via a standing rod disposed between the tip
of the plate and the housing, and the vibration of the diaphragm of the drive unit is transmitted
to the curved diaphragm and the housing, and the diaphragm of the drive unit is produced. , And
was configured to emit sound from the curved diaphragm and the housing. According to another
aspect of the present invention, in the above-described speaker device, the middle-high range
sound is emitted through the curved diaphragm, and the low-range sound is emitted through the
casing utilizing the reaction of the vibration of the diaphragm of the drive unit. . Further,
according to another aspect of the present invention, in the above speaker device, the curved
diaphragm and the housing are formed of wood plates, and the wood plates are a laminate of a
plurality of thin plates and a reinforcing sheet interposed between the thin plates. Configure.
Further, according to another aspect of the present invention, in the above-described speaker
10-05-2019
3
device, the thin plate is a base material, and the reinforcing sheet is Japanese paper. Further,
according to another aspect of the present invention, in any of the above-described picker
devices, the curved diaphragm has a substantially triangular sail shape, and the casing is formed
in a sailboat shape having a hull.
[0009]
The present invention has at least one of the following effects. <1> It is possible to clearly emit
high-pitched and low-pitched sounds that have hitherto been difficult to realize through the
curved diaphragm that has been compressed and deformed, the housing, and the diaphragm of
the drive unit. Therefore, it is possible to omit the horn-type and cone-type speakers additionally
equipped with the conventional speaker device. <2> One drive unit can be shared and sound can
be emitted from the curved diaphragm, the housing, and the diaphragm of the drive unit.
Therefore, not only the drive unit can be effectively utilized to reduce the number of components
but also the sound from the curved diaphragm, the housing, and the diaphragm does not
interfere with each other as compared with the conventional speaker device. The sound of the
mid to high range can be clearly reproduced from the sound range, and the reproduction
performance of the sound can be significantly improved. By configuring the <3> curved
diaphragm and the housing with a wooden board made of a laminate of a plurality of thin plates
and a reinforcing sheet, it is possible to achieve both the prevention of cracking of the wooden
board and good bending and deformability. Therefore, the curved diaphragm and the housing
can be manufactured in any shape using this wooden board. By configuring the <4> curved
diaphragm and the wood plate with a curved housing, not only the volume increases but also the
vibration characteristics of the wood plate are improved because vibration damping materials
such as reinforcing ribs do not exist, Clear sound without cloud can be emitted. <5> In the
speaker device according to the present invention, it is possible to sense with the body (skin) the
sound in the super high range that can not be heard by the human ear. In particular, the use of
wood as the material of the curved diaphragm and the housing provides a higher healing effect
and comfort effect to the audience. By forming the <6> speaker device into a sailboat shape, the
speaker device can be used also as the interior of the sailboat.
[0010]
The perspective view of the speaker apparatus according to the present invention The central
longitudinal cross-sectional view of the speaker apparatus
[0011]
The invention will be described in detail with reference to FIGS.
10-05-2019
4
[0012]
<1> Outline of Speaker Device As shown in FIGS. 1 to 3, the speaker device according to the
present invention includes a case 10 having a hollow structure, one or more drive units 20
accommodated in the case 10, and an upper surface of the case 10. And one or more curved
diaphragms 30 erected by bending a flat plate.
[0013]
The speaker device is structured such that by driving the drive unit 20, the low, middle, high, and
low range sounds can be emitted through the three vibrating members of the housing 10, the
curved diaphragm 30, and the drive unit 20.
Since the sound emitted from the speaker device is nondirectional, almost the same sound field
feeling can be obtained at any position regardless of the orientation of the bending diaphragm
30 or the like.
[0014]
In this example, the case where the planar shape of the casing 10 constituting the speaker device
presents a boat body exhibiting a streamline, and the curved diaphragm 30 is formed in the form
of a sail boat presenting sails of a substantially triangular shape will be described. The shape and
number of the body 10 and the curved diaphragm 30 are not limited to the illustrated form.
The speaker device may be other than a sailboat as long as it comprises the housing 10, the drive
unit 20 and the curved diaphragm 30.
Each part will be described in detail below.
[0015]
10-05-2019
5
<2> Housing The housing 10 is a sealed hollow housing having a bottom surface, a top surface,
and a side surface, and an opening 11 for installing the drive unit 20 is opened on the top
surface thereof. The hollow structure of the case 10 is intended to enhance the sound emission
performance of the case 10.
[0016]
<2.1> Sound Emission Characteristics of Housing The housing 10 has a hollow structure, so that
sounds in the low-pitch range can be clearly emitted. By sealing the housing 10, the sound
emission performance is further improved.
[0017]
<2.2> Standing Bar On the top surface of the housing 10, one or more standing bars 12
resembling a mast stand. The standup rod 12 functions to maintain the bending deformation
state of the bending diaphragm 30 by obtaining the reaction force from the housing 10 and
holding the upper end of the bending diaphragm 30. The standup rod 12 is not limited to a rodlike shape, and may be a plate, a string, or the like as long as it can maintain the curved
deformation state of the curved diaphragm 30.
[0018]
<2.3> Accessories Although illustration is omitted, when a plurality of stay ropes are provided
between the upper surface of the housing 10 and the upper portion of the upright bar 12, the
stability of the upright bar 12 is further enhanced. Further, in order to bring the speaker device
closer to the image of the sailing boat, it is possible to attach appropriate accessories to the
housing 10 as needed.
[0019]
<3> Curved Diaphragm The curved diaphragm 30 is a thin plate which is curved by pressing the
upper and lower sides, and a tongue 31 is formed extending downward at the lower side thereof.
The tongue piece 31 is not essential, as long as a part of the lower side of the curved diaphragm
10-05-2019
6
30 can be in direct contact with the diaphragm 21 of the drive unit 20. Since the curved
diaphragm 30 is pressurized by its upper and lower portions to maintain the deformation, it is
not necessary to attach a plurality of reinforcing ribs and maintain the deformation as in the
prior art.
[0020]
<3.1> Reason for pressure deformation of the diaphragm In the conventional flat speaker device
in which the curved shape of the diaphragm is maintained by bonding a plurality of reinforcing
ribs having an arc surface to one side of the diaphragm, The vibration of the diaphragm is
inhibited because the deformation stress is restrained by the reinforcing rib. In addition, when
the diaphragm is used as it is without bending it, the volume is limited to a low range.
[0021]
In the present invention, in order to solve the above-mentioned problems, the upper and lower
end portions of one flat plate are pressed to give the curved diaphragm 30 a curved shape. By
pressing and bending the upper and lower end portions of the curved diaphragm 30, the volume
through the curved diaphragm 30 can be increased. The volume of the curved diaphragm 30 is
much higher than that in the case where the same size diaphragm is not curved. Although the
volume of the curved diaphragm 30 increases according to the degree of curvature, it is not in a
completely proportional relationship, and the degree of curvature shown in FIGS.
[0022]
<3.2> Attachment Structure of Lower End of Curved Diaphragm The bottom surface of the
tongue 31 formed on the lower side of the curved diaphragm 30 is in direct contact with the
diaphragm 21 on the upper surface of the drive unit 20, and the vertical direction of the
diaphragm 21 is The vibration (longitudinal wave) is transmitted to the curved diaphragm 30 as
a horizontal vibration (transverse wave).
[0023]
<3.3> Attachment Structure of Upper End of Curved Diaphragm In a state where the tongue piece
31 is in contact with the diaphragm 21, a downward force is applied to the upper portion of the
curved diaphragm 30 to curve the entire diaphragm 21; By fixing the upper end of the curved
diaphragm 30 to the upper portion of the upright bar 12, the deformation of the curved
10-05-2019
7
diaphragm 30 is maintained.
[0024]
The attachment structure of the upper end of the curved diaphragm 30 illustrated in FIGS. 2 and
3 will be described. A thick contact plate 32 attached to the upper end of the curved diaphragm
30 is attached, and the contact plate 32 is erected via the screw 33 It fixed to the upper part of
stick 12.
The attachment means of the upper end of the curved diaphragm 30 is not limited to the fixing
by the screw 33, and any known fixing means can be applied as long as the pressurized state of
the curved diaphragm 30 can be maintained.
[0025]
<3.4> Sound Output Characteristic of Curved Diaphragm There is no reinforcing rib serving as a
damping element of vibration in the curved diaphragm 30, and the curved diaphragm 30 is
curved in a state in which a compressive force is applied to the whole.
Furthermore, since the vibration through the diaphragm 21 of the drive unit 20 is directly
transmitted to the lower side of the curved diaphragm 30, it is possible to clearly emit the sound
of the middle to high range particularly.
[0026]
<4> Material of Housing and Curved Diaphragm As the housing 10 and the curved diaphragm
30, for example, it is possible to apply one type or a plurality of types of a wood plate, a metal
plate, a resin plate or the like in combination.
[0027]
In particular, from the viewpoint of sound quality and volume, it is preferable to use a wooden
board 50 in which a plurality of thin plates 51 as shown in FIG. 4 are laminated.
10-05-2019
8
When the wooden board 50 is used as the curved diaphragm 30, the wood grain (fiber direction)
of each thin plate 51 is vertically aligned so as to be able to resist bending.
[0028]
<4.1> Properties of Tackwood As a result of examining various kinds of lumber as a material of
the thin plate 51, it was found that the tangle material is particularly suitable as a material of the
housing 10 and the curved diaphragm 30. Among wood, wood is superior to other woods not
only in terms of sound clarity, but also in terms of sound transparency, softness of sound, and
warmth. On the other hand, although the brazing material is light in weight and easy to process,
the thin plate is easily broken when it is pressed from above and below with a thin plate, and it
becomes difficult to bend as the plate thickness increases.
[0029]
<4.2> Measures against cracking of thin plate It is necessary to take measures against cracking in
order to use the brazing material as a thin plate. Therefore, as shown in FIG. 4, by forming a
laminated structure in which a reinforcing sheet 52 having flexibility is interposed and bonded
between thin sheet metal 51 and 51 made of rattan, cracking of the thin sheet 51 is reliably
prevented. While making it possible to make a large deformation. For example, Japanese paper,
non-woven fabric, etc. can be used as the reinforcing sheet 52, but it is most preferable to use
Japanese paper from the viewpoint of the acoustic surface and thickness.
[0030]
<4.3> Method of Producing a Wooden Board As an example of the method of producing a
wooden board 50, after processing a wood material to a predetermined thickness and thinning it,
two wood sheets (fiber direction) are aligned in the same direction. A Japanese-style paper is
sandwiched between them, and a wood board 50 made of rattan is manufactured by heat and
pressure bonding two thin sheet metal sheets. Since the rattan wooden board 50 is easy to bend
and cut and cut, the housing 10 and the curved diaphragm 30 including the curved shape can be
easily manufactured by using the rattan wooden board 50. .
10-05-2019
9
[0031]
<4.4> The number of laminations of thin plates In this example, the embodiment in which the
wooden board 50 is configured by sandwiching one reinforcing sheet 52 between two thin
boards 51 is shown. The number of may be three or more.
[0032]
<5> Drive Unit The drive unit 20 is for emitting the sound of the housing 10 and the curved
diaphragm 30, and is installed on the upper surface of the housing 10 in a hanging state.
The drive unit 20 is electrically connected to an amplifier (not shown).
[0033]
An example of the drive unit 20 will be described based on FIG. 3. The drive unit 20 is fixed to
the aluminum frame 22, the aluminum diaphragm (vibration plate) 21 fixed to the upper end of
the frame 22, and the bottom surface of the frame 22. The magnetic circuit mounting plate 23,
the bobbin 25 with the coil 24 fixed to the back surface of the diaphragm 21, and the magnetic
circuit 26 disposed on the upper surface of the magnetic circuit mounting plate 23 are provided.
[0034]
<5.1> Diaphragm The diaphragm 21 is exposed at the opening 11 on the top surface of the
housing 10.
The entire diaphragm 21 is exposed in order to emit sound also from the diaphragm 21 itself.
[0035]
<5.2> Coil The bobbin 25 is fixed to the lower surface of the diaphragm 21, and the coil 24 is
disposed in the lower opening of the bobbin 25 so as to surround the magnetic circuit 26. A
predetermined gap is formed between the magnetic circuit 26 and the coil 24.
10-05-2019
10
[0036]
<5.3> Magnetic Circuit The magnetic circuit 26 is configured by arranging plate-like permanent
magnets 26 b and 26 b on both sides of a plate-like iron yoke 26 a. As permanent magnets 26b
and 26b, for example, neodymium magnets, alnico magnets, ferrite magnets, samarium / cobalt,
etc. can be applied, and neodymium magnets are preferable in practical use.
[0037]
<5.4> Characteristics of Drive Unit Unlike the normal speaker unit, the drive unit 20 of this
example has the diaphragm 21 and the coil 24 fixed to the frame 21, and vibration of high
frequency is bent through the diaphragm 21. Vertical vibration is given directly to 30. The
magnetic circuit 26 is attached to the upper surface of the magnetic circuit mounting plate 23
via a spring (not shown), so that a low frequency vibration can be transmitted to the housing 10
by a reaction when vibrating the diaphragm 21. ing.
[0038]
[Operation] Next, the operation of the above-described speaker device will be described.
[0039]
When the drive unit 20 shown in FIGS. 2 and 3 is driven, the diaphragm 21 vibrates in the
vertical direction, and this vibration is transmitted to the curved diaphragm 30 through the
tongue piece 31.
Therefore, since the vibration of the diaphragm 21 is directly transmitted to the curved
diaphragm 30, the transmission loss of the vibration between the diaphragm 21 and the curved
diaphragm 30 is extremely reduced.
[0040]
10-05-2019
11
The upper and lower ends of the curved diaphragm 30 are pressurized, so that the vibration in
the vertical direction of the diaphragm 21 emits the sound in the middle to high range of the
horizontal vibration (transverse wave) through the curved diaphragm 30. In particular, since
there is no attachment such as a rib or the like for damping vibration in the curved diaphragm
30 which is entirely curved, moreover, since the pressure is always applied and curved
throughout the curved diaphragm 30. The sound emitted is loud and clear. Further, as in this
example, in the case where the curved diaphragms 30, 30 and the drive unit 20 are provided in
two pairs, the two-way speaker can be provided.
[0041]
<2> Sound Release Action through the Case When the diaphragm 21 of the drive unit 20
longitudinally vibrates, the reaction is transmitted to the case 10 having a hollow structure.
Vibration of the hollow housing 10 causes a low frequency range sound to be emitted through
the housing 10. Moreover, since vibration to the housing 10 utilizes the reaction of the drive unit
20, there is no need to additionally provide a drive unit dedicated to the low frequency range in
the housing 10, and the number of component parts of the speaker device can be reduced. It can
be reduced.
[0042]
<3> Sound Release Action through Drive Unit The diaphragm 21 of the drive unit 20 is exposed
on the top surface of the housing 10. Therefore, mid-high range sound is emitted through the
diaphragm 21.
[0043]
[Characteristics of Speaker Device] Other characteristics of the loudspeaker device will be
described.
[0044]
<1> Characteristic 1 The sounds from the curved diaphragm 30, the housing 10 and the
diaphragm 21 do not interfere with each other, so that the sound in the low to high range can be
10-05-2019
12
clearly reproduced.
Not only the conventional horn-shaped and cone-shaped speakers need not be additionally
installed, but it is possible to clearly reproduce the sound of a plurality of ranges with high sound
quality more than the conventional horn-shaped and cone-shaped speakers are additionally
arranged. Become.
[0045]
In the conventional speaker device, it is technically difficult to reproduce sounds in a plurality of
different sound ranges through the diaphragm 21 of one drive unit 20. In the present invention,
since sounds of a plurality of different ranges can be reproduced through the diaphragm 21 of
one drive unit 20, mainly through the curved diaphragm 30, for example, music using a stringed
instrument, high range such as opera, super high range In addition to the clear reproduction of
the sound, it is possible to clearly and strongly reproduce, for example, sounds in a low range
such as a drum sound and a bass sound and a super low range through the housing 10.
[0046]
<2> Characteristic 2 It has been known until now that the sound of the transverse wave is
omnidirectional and is effective for the deaf person and the tympanic membrane lost person, but
in the present invention, the curved diaphragm 30, the housing 10 And, in the sound emitted
through the three media of the diaphragm 21, more sharp transverse waves can be generated.
Therefore, in the speaker device of the present invention, it is possible to sense with the body
(skin) the sound of the super high range which is included in the sound of the natural world and
which can not be heard by the human ear. In addition, even if raising the volume of the sound, no
sound break occurs
[0047]
<3> Characteristic 3 In the conventional speaker apparatus equipped with a plurality of hornshaped and cone-shaped speakers, when attempting to make a conversation under an
environment where a loud sound is flowing from the speaker, both the sound and the
conversation become the eardrums of a person The sound disturbed the conversation to be
10-05-2019
13
transmitted. On the other hand, in the present invention, since the sound emitted from the
speaker device is not the compression wave (longitudinal wave) of air but the transverse wave,
the sound can be sensed not only by human hearing but also by the body (skin). It is easy to
distinguish and recognize the sound from the speaker device and the natural voice of the
conversation. Therefore, it is possible to have a conversation without feeling uncomfortable with
the sound from the speaker device. The detailed factors are currently being elucidated, but the
above experiment has confirmed the above effects.
[0048]
<4> Characteristic 4 By forming the speaker device in the form of a sailing boat, it can be used
also as the interior of the sailing boat when no sound is emitted. When used as a speaker device,
sound can be emitted from the sailboat and, in addition to the healing effect by sight, not only
hearing but also sound can be felt by the body (skin).
[0049]
<5> Preferred Use The speaker device according to the present invention can be used for various
known applications. In particular, the speaker device according to the present invention is
suitable for use where importance is given to healing, comfort and the like, such as hospitals,
various clinics, offices, restaurants, waiting rooms, bedrooms and the like.
[0050]
DESCRIPTION OF SYMBOLS 10 ..... Housing | casing 11 ..... Opening 12 ..... Standing rod 20 .....
Drive unit 21 ..... Vibration board 30 ..... Curved diaphragm 31 .. иииииииииииииииииииии
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
10-05-2019
14
Документ
Категория
Без категории
Просмотров
0
Размер файла
26 Кб
Теги
jp2014225734
1/--страниц
Пожаловаться на содержимое документа