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JP2006074597

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DESCRIPTION JP2006074597
An object of the present invention is to provide a panel-type speaker, a display device, and an
electronic device integrated display which can be easily maintained. A diaphragm (1), an exciter
(10) attached to the back of the diaphragm (1) and vibrating the diaphragm (1), and a support for
elastically supporting the diaphragm (1) and the exciter (10) on the back side of the diaphragm
(1) The exciter 10 is provided with a magnet 13 attached to the diaphragm 1 and a coil member
15 disposed on the outer periphery of the magnet 13 and elastically supported by the support
panel 4. It is characterized by [Selected figure] Figure 2
Panel-type speaker, speaker integrated display and electronic apparatus
[0001]
The present invention relates to a panel type speaker, a speaker integrated type display provided
with a panel type speaker in front of the display, and an electronic device using the same, and
more particularly to a panel type speaker, a speaker integrated type display, and an electronic
device easy to maintain. .
[0002]
In recent years, panel-type speakers provided in front of a display have been put to practical use
(see, for example, Patent Documents 1 to 3).
When this type of panel type speaker is applied to a display, not only is the display and the
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speaker integrated to enable downsizing of the two devices, but also the image and the sound are
spatially matched to realize a high sense of reality Can.
[0003]
A conventional speaker integrated display in which such a panel type speaker is applied to a
liquid crystal display will be described with reference to the drawings. FIG. 4 is an exploded
perspective view schematically showing the structure of a speaker integrated display according
to the conventional example. FIG. 5 is a partial cross-sectional view between X and X of an
assembly schematically showing a configuration of a speaker integrated display according to a
conventional example. FIG. 6 is a partial cross-sectional view along line Y-Y of an assembly
schematically showing a configuration of a speaker integrated display according to a
conventional example. FIG. 7 is an exploded perspective view schematically showing the
structure of the exciter of the speaker integrated display according to the conventional example.
[0004]
Referring to FIGS. 4 and 5, this speaker integrated display has a diaphragm 101, an exciter 110,
an elastic member 102, an elastic member 103, a support panel 104, and a liquid crystal display
105. The diaphragm 101 is a transparent flat transparent panel that protects the display screen,
and covers the front of the liquid crystal display 105. The diaphragm 101 vibrates by the
operation of the exciter 110. The diaphragm 101 is attached to the support panel 104 via a
frame-like elastic member 102 made of a sponge or the like to allow the vibration. The elastic
member 102 is bonded to the diaphragm 101 and the support panel 104. One exciter 110 (two
in total) is disposed in the frame of the elastic member 102 and in the vicinity of the left and
right ends of the back surface of the diaphragm 101 to vibrate the diaphragm 101. The exciter
110 is attached to a predetermined position of the support panel 104 via an annular elastic
member 103 made of a sponge or the like. The elastic member 103 adheres to the support panel
104 and the exciter 110. The support panel 104 is a panel that elastically supports the
diaphragm 101 via the elastic member 102 and elastically supports the exciter 110 via the
elastic member 103. The support panel 104 has a protrusion 104 a protruding toward the
diaphragm 101 at the outer peripheral edge. The protrusion 104 a is disposed to surround the
outer periphery of the diaphragm 101, and also serves as the appearance of the product. The
projection 104 a protrudes from the surface of the diaphragm 101 (surface opposite to the
surface on which the exciter 110 is disposed), and plays a role of protecting the surface of the
diaphragm 101 and protecting the exciter 110 from external pressure. It is an important shape.
The support panel 104 has a window portion 104 b aligned with the image display area of the
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liquid crystal display 105. The liquid crystal display 105 is fixed to the support panel 104 so as
to cover the window portion 104 b.
[0005]
Referring to FIG. 7, exciter 110 includes frame 111, yoke 112, magnet 113, plate 114, coil
member 115, damper member 116, sub panel 117, and terminal 118. Attached to the frame 111
is an iron yoke 112 having a magnet 113 and a plate 114 fixed therein. The frame 111 is fixed at
a predetermined position of the support panel 104 via the elastic member 103 (see FIG. 6). The
coil member 115 is formed by winding a coil wire around a bobbin, is disposed around the plate
114, and is held by the damper member 116. The damper member 116 is a member that holds
the coil member 115 so as to be able to absorb vibrations and is attached to a predetermined
position of the frame 111. The terminal 118 is a terminal for inputting an input signal from the
amplifier (not shown) side to the coil wire of the coil member 115, and is attached to a
predetermined position of the frame 111 (see FIG. 6). The sub panel 117 is attached to the tip of
the coil member 115. The sub panel 117 is bonded to the diaphragm 101 (see FIG. 6). By
adhering the surface of the sub panel 117 to the diaphragm 101, the vibration of the coil
member 115 is transmitted to the diaphragm 101 to reproduce sound.
[0006]
Such a speaker integrated display is completed as a product by being incorporated into an
electronic device such as a liquid crystal display device or a notebook computer.
[0007]
JP-A-2002-533957 (WO00 / 02417) JP-A-2002-510182 (WO99 / 37121) JP-A-2002-511681
(WO99 / 52322)
[0008]
However, in the configuration of the speaker integrated display according to the conventional
example, the following problems can be considered.
[0009]
First, maintenance of the speaker integrated display is difficult.
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In FIG. 4 to FIG. 7, since the projections 104a of the support panel 104 constitute the appearance
of the product, when the support panel 104 is replaced because there is a flaw etc. in the
external appearance part, the exciter 110 from the support panel 104 is elastic. The member
102, the elastic member 103, the diaphragm 101, and the liquid crystal display 105 need to be
removed.
Further, when replacing the diaphragm 101, it is necessary to remove the diaphragm 101 from
the support panel 104 and the exciter 110.
As described above, at the time of maintenance requiring removal of the diaphragm 101, the
exciter 110 directly bonded to the diaphragm 101 and bonded via the support panel 104 and the
elastic member 103 is removed. The coil wire of the coil member 115 on the diaphragm 101 side
needs to be electrically connected to the terminal 118 attached to the frame 111. The exciter
110 is structurally connected and the bellows-like damper member 116 is used. Since it is
attached to the frame 111, the damper member 116 or the coil member 115 inside the exciter
110 may be damaged if the force during removal is incorrect. This is because the coil member
115 and the damper member 116, which are movable parts, are parts that are very severe with
respect to external loads. Therefore, in order to replace the support panel 104 or the diaphragm
101, in addition to the elastic member 102 and the elastic member 103, the exciter 110 is also
replaced.
[0010]
An object of the present invention is to provide a panel-type speaker, a display device, and an
electronic device integrated display which are easy to maintain.
[0011]
According to a first aspect of the present invention, in a panel type speaker, a diaphragm, an
exciter attached to the back surface of the diaphragm and vibrating the diaphragm, the
diaphragm and the diaphragm on the back surface side of the diaphragm A support panel for
elastically supporting the exciter, the exciter comprising: a magnet attached to the diaphragm;
and a coil disposed on the outer periphery of the magnet and elastically supported by the
support panel And a member.
[0012]
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In the panel type speaker according to the present invention, the exciter is elastically supported
by the support panel and fixed to the coil member, and the exciter is disposed on the inner
periphery of the coil member, And a plate facing and attached to the magnet, the yoke having a
protrusion at a predetermined position facing the plate, and the plate at a position corresponding
to the protrusion It is preferable to have
[0013]
In a second aspect of the present invention, in a speaker integrated display, a display for
displaying an image, a transparent panel covering the front of the display, and an exciter
attached to the back of the transparent panel and vibrating the transparent panel And a support
panel that elastically supports the transparent panel and the exciter on the back side of the
transparent panel and supports the display and has a window in an image display area of the
display, the exciter comprising: A magnet attached to the transparent panel; and a coil member
disposed on an outer periphery of the magnet and elastically supported by the support panel.
[0014]
According to a third aspect of the present invention, in the electronic device, the panel type
speaker or the speaker integrated type display is used.
[0015]
According to the present invention (claims 1 to 4), by separating and modularizing the magnet
and coil member of the exciter, there is an effect of preventing damage to the exciter due to
disassembly and the like of the device.
This has the effect of improving maintainability.
[0016]
According to the present invention (claims 1 to 4), since the damper used in the prior art is
eliminated, it is possible to reduce the exciter cost and the manufacturing cost.
[0017]
According to the present invention (claim 2), after the exciter is attached to the support panel,
positioning when attaching the diaphragm to the support panel can be facilitated.
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[0018]
Embodiment 1 of the present invention will be described using the drawings.
FIG. 1 is an exploded perspective view schematically showing a configuration of a speaker
integrated display according to a first embodiment of the present invention.
FIG. 2 is a partial cross-sectional view taken along the line A-A of an assembly schematically
showing a configuration of the speaker integrated display according to the first embodiment of
the present invention.
FIG. 3 is an exploded perspective view schematically showing the structure of the exciter of the
speaker integrated display according to the first embodiment of the present invention.
[0019]
Referring to FIGS. 1 and 2, the speaker integrated display includes a diaphragm 1, an exciter 10,
an elastic member 2, an elastic member 3, a support panel 4, and a liquid crystal display 5.
The diaphragm 1 is a transparent flat transparent panel that protects the display screen, and
covers the front of the liquid crystal display 5.
The diaphragm 1 vibrates by the operation of the exciter 10.
The diaphragm 1 is attached to the support panel 4 via a frame-like elastic member 2 made of a
sponge or the like in order to allow the vibration. The elastic member 2 is bonded to the
diaphragm 1 and the support panel 4. One exciter 10 (two in total) is disposed in the frame of
the elastic member 2 and in the vicinity of the left and right ends of the back surface of the
diaphragm 1 to vibrate the diaphragm 1. The exciter 10 is attached to a predetermined position
of the support panel 4 via an elastic member 3 such as a sponge. The elastic member 3 is bonded
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to the support panel 4 and the exciter 10. The support panel 4 is a panel that elastically supports
the diaphragm 1 via the elastic member 2 and elastically supports the exciter 10 via the elastic
member 3. The support panel 4 has a protrusion 4 a that protrudes toward the diaphragm 1 at
the outer peripheral edge. The projections 4 a are disposed so as to surround the outer periphery
of the diaphragm 1 and also serve as the appearance of the product. The protrusion 4 a
protrudes from the surface of the diaphragm 1 (surface opposite to the surface on which the
exciter 10 is disposed), and plays a role of protecting the surface of the diaphragm 1 and
protecting the exciter 10 from external pressure. The support panel 4 has a window 4 b in
accordance with the image display range of the liquid crystal display 5. The liquid crystal display
5 is fixed to the support panel 4 from the surface opposite to the surface on which the
diaphragm 1 is disposed so as to cover the window portion 4 b. Instead of the liquid crystal
display 5, a display such as a plasma display or an organic EL display may be used.
[0020]
Referring to FIGS. 2 and 3, the exciter 10 has a frame 11, a yoke 12, a magnet 13, a plate 14, a
coil member 15, a sub panel 17, and a terminal 18. Here, the inside of the exciter 10 is
modularized, and the coil member 15 to be electrically connected is attached to the support
panel 4 side (fixed side), and the magnet 13 is attached to the movable diaphragm 1 side
(movable side) There is. In the exciter 10 of the first embodiment, the components of the
conventional example other than the damper member (see 116 in FIG. 7) can be used as it is.
[0021]
The frame 11 adheres to the elastic member 3 and is fixed to the support panel 4 via the elastic
member 3. The yoke 12 is a cylindrical, bottomed member made of iron or the like, and is fixed
(inserted, adhered or the like) to the frame 11 with the opening facing the diaphragm 1 side. The
magnet 13 is fixed (inserted, bonded, etc.) to the sub panel 17 at a portion on the diaphragm 1
side, and the plate 14 is fixed (bonded) to the surface on the yoke 12 side (the magnet 13 is
attached to the frame 11 Not fixedly attached). The magnet 13 is provided with a hole 14a
formed of a concave or a through hole in the plate 14 for the convenience of positioning during
assembly (when attaching the diaphragm 1 to the support panel 4 after attaching the exciter 10
to the support panel 4). It is preferable to provide a projection 12 a corresponding to the hole 14
a on the bottom of the yoke 12. The coil member 15 is formed by winding a coil wire around a
bobbin, and is fixed (inserted) to the yoke 12 (the coil member 15 is not fixedly attached to the
sub panel 17). The coil wire of the coil member 15 is electrically connected to the terminal 18 by
soldering or the like. The sub panel 17 is fixed (bonded) to the diaphragm 1 with a double-sided
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tape (not shown) or the like (not shown) sandwiching a thin sponge or the like on the surface on
the diaphragm 1 side (see FIG. 2). The sub panel 17 is fixed (inserted, bonded, etc.) to the magnet
13 on the yoke 12 side. By adhering the surface of the sub panel 17 to the diaphragm 1, the
vibration of the coil member 15 is transmitted to the diaphragm 1, and the sound is reproduced.
The terminal 18 is a terminal for inputting an input signal from the amplifier (not shown) side to
the coil wire of the coil member 15, and is attached to a predetermined position of the frame 11.
[0022]
The speaker integrated type display as described above is completed as a product by being
incorporated into an electronic device such as a liquid crystal television or a notebook computer.
[0023]
Next, the operation of the speaker integrated display according to the first embodiment will be
described.
The speaker function is excited when an electric signal flows through the coil wire of the coil
member 15, and the magnet 13 vibrates due to the magnetism of the magnet 13. A sound is
output by the vibration of the diaphragm 1 through the sub panel 17.
[0024]
According to the first embodiment, by using the separation module structure, it is possible to
eliminate the damper member (see 116 in FIG. 7) which is easily broken in the conventional
exciter. This can reduce the manufacturing cost of the product through the reduction of the
number of parts. In addition, since the exciter 10 is separated at the movable side mainly
composed of the magnet 13 and at the fixed side mainly composed of the coil member 15, when
removing the diaphragm 1 from the support panel 4, the elastic member 2 is separated. Damage
to the exciter 10 does not occur. Furthermore, since the coil member 15 is fixed to the frame 11,
wire connection between the coil member 15 and the terminal 18 is possible on the frame 11.
[0025]
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FIG. 1 is an exploded perspective view schematically showing a configuration of a speaker
integrated display according to Embodiment 1 of the present invention. It is a fragmentary
sectional view between AA of the assembly which showed the structure of the speaker integrated
display which concerns on Embodiment 1 of this invention typically. It is the expansion |
deployment perspective view which showed typically the structure of the exciter of the speaker
integrated display which concerns on Embodiment 1 of this invention. It is the expansion |
deployment perspective view which showed typically the structure of the speaker integrated
display which concerns on a prior art example. It is a fragmentary sectional view between XX of
the assembly which showed the structure of the speaker integrated display which concerns on a
prior art example typically. It is a fragmentary sectional view between YY of the assembly which
showed typically the structure of the speaker integrated display which concerns on a prior art
example. It is the expansion | deployment perspective view which showed typically the structure
of the exciter of the speaker integrated display which concerns on a prior art example.
Explanation of sign
[0026]
1, 101 diaphragm (transparent panel) 2, 102 elastic member (cushion for diaphragm) 3, 103
elastic member (cushion for exciter) 4, 104 support panel 4a, 104a projection 4b, 104b window
portion 5, 105 liquid crystal display 10 , 110 exciter 11, 111 frame 12, 112 yoke 12a protrusion
13, 113 magnet 14, 114 plate 14a hole 15, 115 coil member 17, 117 sub panel 18, 118
terminal 116 damper member
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