JP4086823B2 - Panel type speaker, speaker-integrated display and electronic device - Google Patents

Description

  The present invention relates to a panel-type speaker, a speaker-integrated display including 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 display, and an electronic device that are easy to maintain. .

  In recent years, a panel type speaker provided in front of a display has been put into practical use (for example, see Patent Documents 1 to 3). When this type of panel-type speaker is applied to a display, the display and speaker are integrated to enable miniaturization of the two devices, and the image and sound are spatially matched to achieve a high sense of presence. Can do.

  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 a configuration of a speaker-integrated display according to a conventional example. FIG. 5 is a partial cross-sectional view taken along the line XX of the assembly schematically showing the configuration of the speaker-integrated display according to the conventional example. FIG. 6 is a partial cross-sectional view taken along the line Y-Y of the assembly schematically showing the configuration of the speaker-integrated display according to the conventional example. FIG. 7 is a developed perspective view schematically showing the structure of an exciter of a speaker-integrated display according to a conventional example.

  4 and 5, this speaker-integrated display includes 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 and 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 sponge or the like in order to allow the vibration. The elastic member 102 is bonded to the vibration plate 101 and the support panel 104. One exciter 110 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 vibration plate 101 (two in total), and vibrates the vibration plate 101. The exciter 110 is attached to a predetermined position of the support panel 104 via an annular elastic member 103 made of sponge or the like. The elastic member 103 is bonded to the support panel 104 and the exciter 110. The support panel 104 is a panel that elastically supports the vibration plate 101 via the elastic member 102 and elastically supports the exciter 110 via the elastic member 103. The support panel 104 has a protrusion 104a that protrudes toward the diaphragm 101 at the outer peripheral edge. The protrusion 104a is arranged so as to surround the outer periphery of the vibration plate 101, and also serves as an appearance of the product. The protrusion 104a protrudes from the surface of the vibration plate 101 (the surface opposite to the surface on which the exciter 110 is disposed), and plays a role in protecting the surface of the vibration plate 101 and protecting the exciter 110 from external pressure. It is an important shape. The support panel 104 has a window portion 104 b that matches the image display area of the liquid crystal display 105. The liquid crystal display 105 is fixed to the support panel 104 so as to cover the window 104b.

  Referring to FIG. 7, the exciter 110 includes a frame 111, a yoke 112, a magnet 113, a plate 114, a coil member 115, a damper member 116, a sub panel 117, and a terminal 118. An iron yoke 112 having a magnet 113 and a plate 114 fixed thereto is attached to the frame 111. The frame 111 is fixed to a predetermined position of the support panel 104 via the elastic member 103 (see FIG. 6). The coil member 115 is obtained by winding a coil wire around a bobbin, is arranged around the plate 114, and is held by a damper member 116. The damper member 116 is a member that holds the coil member 115 so that vibration can be absorbed, 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 vibration plate 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.

  Such a speaker-integrated display is completed as a product by being incorporated in an electronic device such as a liquid crystal display device or a notebook computer.

Japanese translation of PCT publication No. 2002-533957 (WO00 / 02417) Japanese translation of PCT publication No. 2002-510182 (WO99 / 37121) Japanese translation of PCT publication No. 2002-511681 (WO99 / 52322)

  However, in the configuration of the speaker-integrated display according to the conventional example, the following problems can be considered.

  First, maintenance of the speaker-integrated display is difficult. 4-7, since the protrusion 104a of the support panel 104 constitutes the appearance of the product, when the support panel 104 is replaced due to scratches on the appearance portion, the exciter 110, the elasticity It is necessary to remove the member 102, the elastic member 103, the diaphragm 101, and the liquid crystal display 105. Further, when exchanging the diaphragm 101, it is necessary to remove the diaphragm 101 from the support panel 104 and the exciter 110. As described above, in the maintenance that requires the vibration plate 101 to be removed, the exciter 110 that is directly bonded to the vibration plate 101 and bonded to the support panel 104 and the elastic member 103 is removed. The coil wire 115 of the coil member 115 on the vibration plate 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-shaped damper member 116 is connected. Accordingly, the damper member 116 or the coil member 115 inside the exciter 110 will be damaged if the force applied during removal is mistaken. This is because the coil member 115 and the damper member 116 which are movable parts are extremely severe parts with respect to an external load. For this reason, in order to replace the support panel 104 or the diaphragm 101, the exciter 110 is also replaced in addition to the elastic member 102 and the elastic member 103.

  An object of the present invention is to provide a panel type speaker, a display device, and an electronic device integrated display that can be easily maintained.

In a first aspect of the present invention, in the panel type speaker, the diaphragm, an exciter that is attached to the rear surface of the diaphragm and vibrates the diaphragm, and on the rear surface side of the diaphragm, the diaphragm and A support panel that elastically supports the exciter, and the exciter is disposed on an outer periphery of the magnet and is elastically supported by the support panel. And the exciter is elastically supported by the support panel and fixes the coil member, and is disposed on the inner periphery of the coil member, and faces the yoke. A plate attached to the magnet, and the yoke has a protrusion at a predetermined position facing the plate, Over DOO is characterized by having a hole at a position corresponding to the protrusion.

In a second aspect of the present invention, in the panel type speaker, the vibration plate, an exciter that is attached to the back surface of the vibration plate and vibrates the vibration plate, and a support panel disposed on the back surface side of the vibration plate And a first elastic member interposed between the diaphragm and the support panel, and a second elastic member interposed between the exciter and the support panel, the exciter being attached to the diaphragm And a coil member disposed on an outer periphery of the magnet and elastically supported by the support panel via the second elastic member.

In a third aspect of the present invention, in a speaker-integrated display, an exciter that is attached to the rear surface of the transparent panel and that vibrates the transparent panel, a display that displays an image, a transparent panel that covers the front of the display And a support panel disposed on the back side of the transparent panel, supporting the display and having a window in an image display area of the display, and a first interposed between the transparent panel and the support panel an elastic member, and a second elastic member interposed between the exciter and the support panel, the exciter comprises a magnet attached to the transparent panel, with arranged on the outer periphery of the magnet, the a coil member which is elastically supported by the support panel through a second elastic member, provided with a It is characterized in.

According to a fourth aspect of the present invention, the panel type speaker or the speaker integrated display is used in an electronic apparatus.

According to the present invention (Claims 1 to 6 ), the exciter magnet and the coil member are separated into a module, thereby preventing the exciter from being damaged due to disassembly of the apparatus. As a result, an effect of improving maintainability can be obtained.

According to the present invention (claims 1 to 6 ), the damper used in the prior art is deleted, so that the exciter cost and the manufacturing cost can be reduced.

According to the present invention (Claim 1 ), after attaching the exciter to the support panel, positioning when attaching the diaphragm to the support panel can be facilitated.

  Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view schematically showing a configuration of a speaker-integrated display according to Embodiment 1 of the present invention. FIG. 2 is a partial cross-sectional view taken along line A-A of the assembly schematically showing the configuration of the speaker-integrated display according to the first embodiment of the present invention. FIG. 3 is a developed perspective view schematically showing the structure of the exciter of the speaker-integrated display according to the first embodiment of the present invention.

  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 and 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 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 is disposed within 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 (two in total), and vibrates the diaphragm 1. The exciter 10 is attached to a predetermined position of the support panel 4 through an elastic member 3 such as a sponge. The elastic member 3 is bonded to the support panel 4 and the exciter 10. The support panel 4 is a panel that elastically supports the vibration plate 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 protrusion 4a is arranged so as to surround the outer periphery of the diaphragm 1, and also serves as an appearance of the product. The protrusion 4a protrudes from the surface of the diaphragm 1 (the surface opposite to the surface on which the exciter 10 is disposed), and serves to protect the surface of the diaphragm 1 and protect the exciter 10 from external pressure. The support panel 4 has a window portion 4 b that matches 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 4b. Instead of the liquid crystal display 5, a display such as a plasma display or an organic EL display may be used.

  Referring to FIGS. 2 and 3, the exciter 10 includes 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 so that 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). Yes. In the exciter 10 according to the first embodiment, the conventional components other than the damper member (see 116 in FIG. 7) can be used as they are.

  The frame 11 is bonded 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 (fitted, bonded, etc.) to the frame 11 with the opening facing the diaphragm 1 side. The magnet 13 is fixed (attached, adhered, etc.) to the sub-panel 17 at the diaphragm 1 side, and the plate 14 is fixed (adhered) to the surface of the yoke 12 (the magnet 13 is attached to the frame 11). Not fixedly attached). The magnet 13 has a hole 14a formed of a concave or through hole in the plate 14 for the convenience of positioning during assembly (when the exciter 10 is attached to the support panel 4 and then the diaphragm 1 is attached to the support panel 4). It is preferable to provide the protrusion 12 a corresponding to the hole 14 a on the bottom surface of the yoke 12. The coil member 15 is obtained 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 (adhered) to the diaphragm 1 with a double-sided tape 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 (fitted, bonded, etc.) to the magnet 13 on the yoke 12 side. By bonding the surface of the sub-panel 17 to the diaphragm 1, the vibration of the coil member 15 is transmitted to the diaphragm 1 to reproduce sound. The terminal 18 is a terminal for inputting an input signal from an amplifier (not shown) side to the coil wire of the coil member 15, and is attached to a predetermined position of the frame 11.

  The speaker-integrated display as described above is completed as a product by being incorporated in an electronic device such as a liquid crystal television or a notebook computer.

  Next, the operation of the speaker-integrated display according to the first embodiment will be described. With respect to the speaker function, an electric signal flows through the coil wire of the coil member 15, and the magnet 13 vibrates due to magnetism of the magnet 13, and sound is output by vibration of the diaphragm 1 through the sub panel 17.

  According to the first embodiment, by using the separation module structure, it is possible to delete the damper member (see 116 in FIG. 7) that was easily damaged in the conventional exciter. Thereby, the manufacturing cost of a product can be reduced through a reduction in the number of parts. Further, since the exciter 10 is separated on the movable side mainly including the magnet 13 and the fixed side mainly including the coil member 15, the elastic member 2 is removed when the diaphragm 1 is removed from the support panel 4. The exciter 10 is not damaged by removing the. Furthermore, since the coil member 15 is fixed to the frame 11, the coil member 15 and the terminal 18 can be connected on the frame 11.

It is the expansion | deployment perspective view which showed typically the structure of the speaker integrated display which concerns on Embodiment 1 of this invention. It is a fragmentary sectional view between AA of the assembly which showed typically the composition of the speaker integrated display concerning Embodiment 1 of the present invention. 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 the fragmentary sectional view between XX of the assembly which showed typically the composition of the speaker integrated display concerning a prior art example. It is the fragmentary sectional view between YY of the assembly which showed typically the composition of the speaker integrated display concerning 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 symbols

1,101 Diaphragm (transparent panel)
2,102 Elastic member (diaphragm cushion)
3, 103 Elastic member (exciter cushion)
4, 104 Support panel 4a, 104a Protrusion 4b, 104b Window 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

Claims (6)

A diaphragm,
An exciter that is attached to the back surface of the diaphragm and vibrates the diaphragm;
On the back side of the diaphragm, a support panel that elastically supports the diaphragm and the exciter;
With
The exciter includes a magnet attached to the diaphragm, and a coil member disposed on the outer periphery of the magnet and elastically supported by the support panel ,
The exciter is
A yoke that is elastically supported by the support panel and fixes the coil member;
A plate disposed on the inner periphery of the coil member, facing the yoke, and attached to the magnet;
With
The yoke has a protrusion at a predetermined position facing the plate,
The panel type speaker , wherein the plate has a hole at a position corresponding to the protrusion . A diaphragm,
An exciter that is attached to the back surface of the diaphragm and vibrates the diaphragm;
A support panel disposed on the back side of the diaphragm;
A first elastic member interposed between the diaphragm and the support panel;
A second elastic member interposed between the exciter and the support panel;
With
The exciter includes a magnet attached to the diaphragm, and a coil member that is disposed on an outer periphery of the magnet and elastically supported by the support panel via the second elastic member. Panel type speaker characterized by 3. The panel type speaker according to claim 2, wherein the exciter includes a yoke that is elastically supported by the support panel via the second elastic member and fixes the coil member. A display for displaying images,
A transparent panel covering the front of the display;
An exciter that is attached to the back surface of the transparent panel and vibrates the transparent panel;
A support panel that is disposed on the back side of the transparent panel, supports the display, and has a window in an image display area of the display;
A first elastic member interposed between the transparent panel and the support panel;
A second elastic member interposed between the exciter and the support panel;
With
The exciter includes a magnet attached to the transparent panel, and a coil member that is disposed on an outer periphery of the magnet and elastically supported by the support panel via the second elastic member. A display with integrated speakers. The speaker-integrated display according to claim 4, wherein the exciter includes a yoke that is elastically supported by the support panel via the second elastic member and fixes the coil member. An electronic apparatus using the panel type speaker according to any one of claims 1 to 3 or the speaker integrated display according to claim 4 or 5 .

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