JPH04140999A - Combination screen and speaker - Google Patents
Combination screen and speakerInfo
- Publication number
- JPH04140999A JPH04140999A JP26480190A JP26480190A JPH04140999A JP H04140999 A JPH04140999 A JP H04140999A JP 26480190 A JP26480190 A JP 26480190A JP 26480190 A JP26480190 A JP 26480190A JP H04140999 A JPH04140999 A JP H04140999A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric sounding
- pitched sound
- sounding bodies
- diaphragm
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 230000006870 function Effects 0.000 claims description 4
- 239000006260 foam Substances 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、発泡樹脂板からなる振動板に圧電発音体が取
付けられていると共に、前記振動板の前面にスクリーン
シートが設けられているスクリーン兼用スピーカに関す
る。Detailed Description of the Invention (Field of Industrial Application) The present invention provides a screen in which a piezoelectric sounding body is attached to a diaphragm made of a foamed resin plate, and a screen sheet is provided on the front surface of the diaphragm. Regarding dual-purpose speakers.
（従来の技術）
圧電スピーカの応用例として、これの前面に映像が投射
されるスクリーンシートを貼り、これによりスクリーン
としての機能を付与し、その付加価値を高めるものがあ
る。第３図はこの種のスクリーン兼用スピーカを示す断
面図である。このスクリーン兼用スピーカは、２枚の発
泡樹脂板４゜５を前後方向に貼着して形成した振動板３
と、振動板３に埋設された複数の圧電発音体２（図示例
では２個）と、振動板３の図上下側に相当する前面に取
付けられた表面性状が滑らかな発泡シート７と、これの
前面に取付けられたスクリーンシート６とを備えている
。また振動板３の図上上側に相当する後面には、樹脂シ
ート１が取付けられている。第４図はこの種のスクリー
ン兼用スピーカを示す正面図であり、特に圧電発音体２
の取付位置を表わす。圧電発音体２は同一種類のものが
、左右対称に取付けられている。(Prior Art) As an example of the application of a piezoelectric speaker, there is one in which a screen sheet on which an image is projected is attached to the front of the piezoelectric speaker, thereby giving it a function as a screen and increasing its added value. FIG. 3 is a sectional view showing this type of screen-cum-speaker. This screen-cum-speaker has a diaphragm 3 formed by pasting two foamed resin plates 4°5 in the front and back direction.
, a plurality of piezoelectric sounding bodies 2 (two in the illustrated example) embedded in the diaphragm 3 , a foam sheet 7 with a smooth surface attached to the front surface of the diaphragm 3 corresponding to the upper and lower sides in the figure; A screen sheet 6 is attached to the front surface of the screen. Further, a resin sheet 1 is attached to the rear surface of the diaphragm 3, which corresponds to the upper side in the figure. FIG. 4 is a front view showing this type of screen-cum-speaker, in particular the piezoelectric sounding body 2.
Indicates the mounting position. Piezoelectric sounding bodies 2 of the same type are installed symmetrically.
（発明が解決しようとする課題）
ところで、上記従来のスクリーン兼用スピーカは、ステ
レオ再生を行なう場合、以下に示すような欠点がある。(Problems to be Solved by the Invention) By the way, the conventional screen-cum-speaker described above has the following drawbacks when performing stereo reproduction.
すなわち通常の圧電スピーカにおいては、ステレオ再生
を行なうには、圧電スピーカを左右に２個設置するが、
スクリーン兼用スピーカにおいては、振動板３の前面に
取付けられたスクリーンシート６に映像が投射されるた
め、振動板３を分割することはできない。そのため左右
を一体とした１枚物の振動板３を使用しなけらばならず
、左右一体型の振動板３を用いた従来のスクリーン兼用
スピーカは左右の振動の干渉によりセパレーションが悪
く、良好なステレオ感が得られないという問題点がある
。In other words, with normal piezoelectric speakers, two piezoelectric speakers are installed on the left and right to perform stereo reproduction.
In the screen-cum-speaker, the image is projected onto the screen sheet 6 attached to the front of the diaphragm 3, so the diaphragm 3 cannot be divided. Therefore, it is necessary to use a single-piece diaphragm 3 with integrated left and right diaphragms 3. Conventional screen speakers using integrated diaphragms 3 on the left and right sides have poor separation due to interference between left and right vibrations. There is a problem that a stereo effect cannot be obtained.
本発明は、かかる現状に鑑みてなされたものであり、ス
テレオ効果が格段に向上できるスクリーン兼用スピーカ
を提供することを目的としている。The present invention has been made in view of the current situation, and it is an object of the present invention to provide a screen-cum-speaker that can significantly improve the stereo effect.
（課題を解決するための手段）
本発明は、発泡樹脂板からなる振動板に、複数の圧電発
音体が取付けられていると共に、前記振動板の前面に、
スクリーンシートが設けられているスクリーン兼用スピ
ーカにおいて、前記複数の圧電発音体は、低音用、高音
用の少なくとも二種の圧電発音体で構成され、低音用圧
電発音体は前記振動板の中央部の左右に、高音用圧電発
音体は低音用圧電発音体の両外側に、それぞれ配置され
ていることを特徴とする。(Means for Solving the Problems) The present invention includes a diaphragm made of a foamed resin plate, a plurality of piezoelectric sounding bodies attached to the diaphragm, and a front surface of the diaphragm.
In the screen-cum-speaker provided with a screen sheet, the plurality of piezoelectric sounding bodies are composed of at least two types of piezoelectric sounding bodies, one for low-pitched sounds and one for high-pitched sounds, and the piezoelectric sounding body for low-pitched sounds is located at the center of the diaphragm. The piezoelectric sounding body for high-pitched sounds is arranged on the left and right sides of the piezoelectric sounding body for low-pitched sounds, respectively.
（作用）
上記構成によれば、人間の聴覚において指向性が敏感な
音域である高音域のセパレーションを多くとることがで
きる。(Function) According to the above configuration, it is possible to increase the separation in the high frequency range, which is a sound range to which directionality is sensitive in human hearing.
（実施例）
以下本発明の一実施例を図面に従って具体的に説明する
。第１図は本発明に係るスクリーン兼用スピーカの断面
図である。(Example) An example of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a sectional view of a screen-cum-speaker according to the present invention.
振動が付与されると前面側より音を発する振動板３は、
発泡スチロール、発泡ポリエチレン等からなる２枚の発
泡樹脂板４．５を前後方向に貼着して形成される。両発
泡樹脂板４，５は共に矩形状をなすが、前側の発泡樹脂
板４はその前面周縁部に段部が形成される。The diaphragm 3 emits sound from the front side when vibration is applied.
It is formed by pasting two foamed resin plates 4.5 made of foamed polystyrene, foamed polyethylene, etc. in the front-back direction. Both foamed resin plates 4 and 5 have a rectangular shape, but the front foamed resin plate 4 has a stepped portion formed at its front peripheral edge.
第２図は圧電発音体２の取付位置を示す正面図である。FIG. 2 is a front view showing the mounting position of the piezoelectric sounding body 2. FIG.
複数の圧電発音体２は例えば低音用、中音用、高音用の
三種の圧電発音体２で構成され、それぞれ発泡樹脂板４
，５の対向面の所定の位置に取付けられる。すなわち低
音用の圧電発音体２は振動板３の中央部の左右に、中音
用の圧電発音体２は低音用の圧電発音体２の両外側に、
高音用の圧電発音体２は中音用の圧電発音体２の外側で
ある、振動板３の左右周辺部近傍に、それぞれ左右対称
縦二列に配置されている。The plurality of piezoelectric sounding bodies 2 are composed of, for example, three types of piezoelectric sounding bodies 2 for low tones, medium tones, and high tones, each of which has a foamed resin plate 4.
, 5 at a predetermined position on the opposing surface. That is, the piezoelectric sounding bodies 2 for low tones are placed on the left and right sides of the center of the diaphragm 3, and the piezoelectric sounding bodies 2 for medium tones are placed on both sides of the piezoelectric sounding bodies 2 for low tones.
The piezoelectric sounding bodies 2 for high-pitched sounds are arranged in two symmetrical longitudinal rows near the left and right peripheral parts of the diaphragm 3, which are outside the piezoelectric sounding bodies 2 for medium tones.
かかる構成によれば、低音用の圧電発音体２は、振動板
３の中央部に取付けられているので、振動し易く、振幅
を多くとることができる。また人間の聴覚は低音域では
指向性が鈍いので、ステレオのセパレーションはあまり
必要とせず、中央部に配置されても問題とならない。According to this configuration, since the piezoelectric sounding body 2 for bass sounds is attached to the center of the diaphragm 3, it can easily vibrate and have a large amplitude. Furthermore, human hearing has poor directivity in the low frequency range, so stereo separation is not very necessary, and even if it is placed in the center, there is no problem.
中高音用の圧電発音体２は、比較的振幅を必要としない
ので、振動板３の周縁部近傍に取付けても問題なく、周
縁部近傍に配置されることで左右のセパレーションを多
くとることができる。Since the piezoelectric sounding body 2 for medium and high tones requires relatively little amplitude, there is no problem in installing it near the periphery of the diaphragm 3, and by placing it near the periphery, it is possible to increase the separation between the left and right sides. can.
尚、本実施例においては、複数の圧電発音体２は、高音
用、中音用、低音用の三種の圧電発音体２で構成される
が、本発明はこれに限定されるものではなく、例えば高
音用、低音用の二種類の圧電発音体２で構成されるもの
も可能である。但しこの場合は、本実施例に比べ全体的
な周波数特性が平坦でなくなる。In this embodiment, the plurality of piezoelectric sounding bodies 2 are composed of three types of piezoelectric sounding bodies 2 for high-pitched sounds, medium-tone sounds, and low-pitched sounds, but the present invention is not limited to this. For example, it is also possible to use two types of piezoelectric sounding bodies 2, one for high-pitched sounds and one for low-pitched sounds. However, in this case, the overall frequency characteristics are less flat than in this embodiment.
これら圧電発音体２の取付構造は同様であるので、以下
その１個について第１図の断面図を用いて説明する。発
泡樹脂板４，５の対向面には、環状の溝４ａ、５ａを突
き合わせ状に設けてあり、これらの溝４ａ、５ａ間に圧
電発音体２を挟着保持しである。具体的には、溝４ａ、
５ａの中央部にそれぞれ残存する突起４ｂ、５ｂ間に圧
電発音体２を接着剤等を用いて取付けた構造となってい
る。このため、突起４ｂ、５ｂの高さ寸法は、溝４ａ、
５ａの高さ寸法よりも少し短くなっている。Since the mounting structure of these piezoelectric sounding bodies 2 is the same, one of them will be explained below using the sectional view of FIG. 1. Annular grooves 4a and 5a are provided on opposing surfaces of the foamed resin plates 4 and 5 in abutting fashion, and the piezoelectric sounding body 2 is held and held between these grooves 4a and 5a. Specifically, the groove 4a,
The structure is such that the piezoelectric sounding body 2 is attached between the protrusions 4b and 5b remaining at the center of the piezoelectric body 5a using adhesive or the like. Therefore, the height dimensions of the protrusions 4b and 5b are the same as those of the grooves 4a,
It is slightly shorter than the height of 5a.
各圧電発音体２は、円形の金属板２ａの前後両面にこれ
よりも小径になった円形の圧電体２ｂ。Each piezoelectric sounding body 2 has a circular piezoelectric body 2b having a smaller diameter on both front and rear surfaces of a circular metal plate 2a.
２ｂ（例えば、ＰＺＴ等からなる）を同心状に貼着した
構造になっており、図示しないアンプから電気信号が与
えられると、圧電発音体２が振動板３を駆動し、振動板
３が前面側より音を発するようになっている。圧電発音
体は低音用、中音用、高音用によって径が異なり、低音
用、中音用、高音用の順で大径となっている。2b (for example, made of PZT, etc.) are attached concentrically, and when an electric signal is given from an amplifier (not shown), the piezoelectric sounding body 2 drives the diaphragm 3, and the diaphragm 3 The sound is emitted from the side. The diameter of the piezoelectric sounding body differs depending on whether it is for low, medium, or high tones, and the diameter increases in the order of low, mid, and high tones.
尚、圧電発音体の個数については図示例の個数に限定さ
れるものではなく、スクリーンとして使用できるだけの
面積を有する振動板を駆動できる個数であればよい。Note that the number of piezoelectric sounding bodies is not limited to the number shown in the illustrated example, but may be any number that can drive a diaphragm having an area large enough to be used as a screen.
振動板３の前面にはスクリーンシート６が取付けられ、
このスクリーンシート６上に映像を投射することによっ
て、スピーカをスクリーンとしても機能させる構成とな
っている。このスクリーンシート６は、表面に微細な凹
−凸加工された透明樹脂シートの裏面に、アルミニウム
箔をラミネートした構造である。更に、スクリーンシー
ト６と振動板３との間には、表面性状が滑らかな発泡シ
ート７が取付けられている。A screen sheet 6 is attached to the front of the diaphragm 3,
By projecting an image onto this screen sheet 6, the speaker is configured to function as a screen as well. This screen sheet 6 has a structure in which an aluminum foil is laminated on the back side of a transparent resin sheet whose surface has been processed with minute convexities and convexities. Further, a foamed sheet 7 having a smooth surface is attached between the screen sheet 6 and the diaphragm 3.
スクリーンシート６及び発泡シート７の具体的な取付け
は、以下のようにして行なう。すなわち、振動板３の前
面全体（発泡樹脂板４の前面周縁部に形成された段部を
除く）にわたって発泡シート７を接着剤等を用いて貼着
する。その後、発泡シート７の前面全体にスクリーンシ
ート６を同様に接着剤等を用いて貼着する。The screen sheet 6 and foam sheet 7 are specifically attached as follows. That is, the foam sheet 7 is pasted over the entire front surface of the diaphragm 3 (excluding the stepped portion formed at the front peripheral edge of the foam resin plate 4) using an adhesive or the like. Thereafter, the screen sheet 6 is similarly attached to the entire front surface of the foam sheet 7 using an adhesive or the like.
また、振動板３の後面には、樹脂シート１が、接着剤を
用いて貼着される。なお、振動板３の周縁部にはこれを
覆うフレーム８が設けられる。フレーム８は、額縁状を
なし、内周面の全長にわたって形成した断面コ字状の溝
に振動板３の周縁部を挿入連結しである。そのうえで、
発泡樹脂板４の前面周縁部に形成された段部には細長い
テープ状の弾性支持片９が全周にわたって介装されてお
り、この弾性支持片９により振動板３がフレーム８に支
持される構造になっている。Furthermore, the resin sheet 1 is attached to the rear surface of the diaphragm 3 using an adhesive. Note that a frame 8 is provided on the peripheral edge of the diaphragm 3 to cover it. The frame 8 has a picture frame shape, and the peripheral edge of the diaphragm 3 is inserted into and connected to a groove having a U-shaped cross section formed over the entire length of the inner peripheral surface. After that,
An elongated tape-shaped elastic support piece 9 is interposed around the entire circumference of the stepped portion formed on the front peripheral edge of the foamed resin plate 4, and the diaphragm 3 is supported by the frame 8 by this elastic support piece 9. It has a structure.
また、上記実施例では２枚の発泡樹脂板によって振動板
を形成する場合について説明したが、１枚の発泡樹脂板
によって振動板を形成し、これの後面に圧電発音体を取
付ける構成のものにも同様に適用できる。Further, in the above embodiment, the case where the diaphragm is formed by two foamed resin plates has been explained, but it is also possible to form the diaphragm by one foamed resin plate and attach a piezoelectric sounding body to the rear surface of the diaphragm. can be similarly applied.
（発明の効果）
以上のように本発明によれば、スクリーン部の振動板を
分割することなく、左右一体型の振動板を用いてる°の
で、鮮明な画像が得られると共に、圧電発音体の取付位
置を上記構成とすることにより、人間の聴覚にとって指
向性が敏感な高音用の圧電発音体の左右のセパレーショ
ンを多くとることができ、良好なステレオ感が得られる
。(Effects of the Invention) As described above, according to the present invention, since the left and right integrated diaphragms are used without dividing the diaphragm of the screen portion, clear images can be obtained, and the piezoelectric sounding body By configuring the mounting position as described above, it is possible to increase the separation between the left and right sides of the piezoelectric sounding body for high-pitched sounds whose directivity is sensitive to human hearing, and a good stereo sound can be obtained.
また、圧電発音体を帯域により分は数種用いることによ
り、それぞれの周波数特性の平坦な所を選択でき、全体
的に平坦な周波数特性を得ることができる。Furthermore, by using several types of piezoelectric sounding elements depending on the band, it is possible to select a flat area of each frequency characteristic, and it is possible to obtain an overall flat frequency characteristic.
第１図および第２図は本発明に係るスクリーン兼用スピ
ーカの一実施例を示し、第１図は断面図、第２図は正面
図である。第３図および第４図は従来例を示し、
ある。
１・・・樹脂シート、
２・・・圧電発音体、
３・・・振動板、
４．５・・・発泡樹脂板、
４ａ、５ａ・・・溝、
４ｂ、５ｂ・・・突起
６・・・スクリーンシート、
７・・・発泡シート、
８・・・フレーム、
９・・・弾性支持片
第３図は断面図、
第４図は正面図でFIGS. 1 and 2 show an embodiment of a screen-cum-speaker according to the present invention, with FIG. 1 being a sectional view and FIG. 2 being a front view. 3 and 4 show conventional examples. DESCRIPTION OF SYMBOLS 1... Resin sheet, 2... Piezoelectric sounding body, 3... Vibration plate, 4.5... Foamed resin board, 4a, 5a... Groove, 4b, 5b... Protrusion 6...・Screen sheet, 7... Foam sheet, 8... Frame, 9... Elastic support piece Figure 3 is a sectional view, Figure 4 is a front view.
Claims (2)
が取付けられていると共に、前記振動板の前面に、スク
リーンシートが設けられているスクリーン兼用スピーカ
において、 前記複数の圧電発音体は、低音用、高音用の少なくとも
二種の圧電発音体で構成され、低音用圧電発音体は前記
振動板の中央部の左右に、高音用圧電発音体は低音用圧
電発音体の両外側に、それぞれ配置されていることを特
徴とするスクリーン兼用スピーカ。(1) In a speaker that also serves as a screen, in which a plurality of piezoelectric sounding bodies are attached to a diaphragm made of a foamed resin plate, and a screen sheet is provided on the front surface of the diaphragm, the plurality of piezoelectric sounding bodies are , consisting of at least two types of piezoelectric sounding bodies for bass and treble, the piezoelectric sounding bodies for bass being on the left and right sides of the center of the diaphragm, the piezoelectric sounding bodies for high pitching being on both sides of the piezoelectric sounding body for bass, A speaker that also functions as a screen is characterized by the fact that each speaker is placed separately.
縦二列に配置されていることを特徴とする特許請求の範
囲第１項記載のスクリーン兼用スピーカ。(2) The screen-cum-speaker according to claim 1, wherein the piezoelectric sounding bodies for bass and treble are arranged in two vertically symmetrical rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264801A JP2576454B2 (en) | 1990-10-01 | 1990-10-01 | Screen combined speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2264801A JP2576454B2 (en) | 1990-10-01 | 1990-10-01 | Screen combined speaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04140999A true JPH04140999A (en) | 1992-05-14 |
| JP2576454B2 JP2576454B2 (en) | 1997-01-29 |
Family
ID=17408405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2264801A Expired - Fee Related JP2576454B2 (en) | 1990-10-01 | 1990-10-01 | Screen combined speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2576454B2 (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6169809B1 (en) | 1996-09-02 | 2001-01-02 | New Transducers Limited | Visual display means incorporating loudspeakers |
| US6243473B1 (en) * | 1995-09-02 | 2001-06-05 | New Transducers Limited | Laptop computer with loudspeaker(s) |
| US6266426B1 (en) | 1995-09-02 | 2001-07-24 | New Transducers Limited | Visual display means incorporating loudspeakers |
| JP2002064898A (en) * | 2000-06-06 | 2002-02-28 | Shingo Minazu | Foamed plastic resonator |
| JP2002090887A (en) * | 2000-09-19 | 2002-03-27 | Jamco Corp | Projection screen |
| EP1299940A1 (en) * | 2000-01-07 | 2003-04-09 | Lewis Athanas | Mechanical-to-acoustical transformer and multi-media flat film speaker |
| EP1505852A1 (en) * | 2003-01-10 | 2005-02-09 | Matsushita Electric Industrial Co., Ltd. | Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker |
| US7068800B2 (en) | 1998-09-09 | 2006-06-27 | Fujitsu Limited | Speaker apparatus |
| WO2006121206A1 (en) * | 2005-05-12 | 2006-11-16 | Kabushiki Kaisha Kenwood | Screen speaker system |
| JP2006319626A (en) * | 2005-05-12 | 2006-11-24 | Kenwood Corp | Screen speaker system |
| JP2007116636A (en) * | 2005-10-24 | 2007-05-10 | Kenwood Corp | Screen speaker |
| JP2008205809A (en) * | 2007-02-20 | 2008-09-04 | Kenwood Corp | Speaker and speaker system |
| US7884529B2 (en) | 2005-05-31 | 2011-02-08 | Emo Labs, Inc. | Diaphragm membrane and supporting structure responsive to environmental conditions |
| US9232316B2 (en) | 2009-03-06 | 2016-01-05 | Emo Labs, Inc. | Optically clear diaphragm for an acoustic transducer and method for making same |
| DE102015204583A1 (en) * | 2015-03-13 | 2016-10-20 | Brandenburgische Technische Universität Cottbus-Senftenberg | Sound transducer array with coupled transducers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01144891A (en) * | 1987-12-01 | 1989-06-07 | Matsushita Electric Ind Co Ltd | Speaker |
| JPH02122796A (en) * | 1988-10-31 | 1990-05-10 | Matsushita Electric Ind Co Ltd | Speaker device |
-
1990
- 1990-10-01 JP JP2264801A patent/JP2576454B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01144891A (en) * | 1987-12-01 | 1989-06-07 | Matsushita Electric Ind Co Ltd | Speaker |
| JPH02122796A (en) * | 1988-10-31 | 1990-05-10 | Matsushita Electric Ind Co Ltd | Speaker device |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6243473B1 (en) * | 1995-09-02 | 2001-06-05 | New Transducers Limited | Laptop computer with loudspeaker(s) |
| US6266426B1 (en) | 1995-09-02 | 2001-07-24 | New Transducers Limited | Visual display means incorporating loudspeakers |
| US6169809B1 (en) | 1996-09-02 | 2001-01-02 | New Transducers Limited | Visual display means incorporating loudspeakers |
| US7068800B2 (en) | 1998-09-09 | 2006-06-27 | Fujitsu Limited | Speaker apparatus |
| US7038356B2 (en) | 2000-01-07 | 2006-05-02 | Unison Products, Inc. | Mechanical-to-acoustical transformer and multi-media flat film speaker |
| EP1299940A1 (en) * | 2000-01-07 | 2003-04-09 | Lewis Athanas | Mechanical-to-acoustical transformer and multi-media flat film speaker |
| EP1299940A4 (en) * | 2000-01-07 | 2005-09-21 | Lewis Athanas | Mechanical-to-acoustical transformer and multi-media flat film speaker |
| JP2002064898A (en) * | 2000-06-06 | 2002-02-28 | Shingo Minazu | Foamed plastic resonator |
| JP2002090887A (en) * | 2000-09-19 | 2002-03-27 | Jamco Corp | Projection screen |
| JP4630436B2 (en) * | 2000-09-19 | 2011-02-09 | 株式会社ジャムコ | Projection screen |
| EP1505852A1 (en) * | 2003-01-10 | 2005-02-09 | Matsushita Electric Industrial Co., Ltd. | Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker |
| EP1505852A4 (en) * | 2003-01-10 | 2010-01-27 | Panasonic Corp | Piezoelectric speaker, speaker system employing it, and electronic apparatus employing piezoelectric speaker |
| WO2006121206A1 (en) * | 2005-05-12 | 2006-11-16 | Kabushiki Kaisha Kenwood | Screen speaker system |
| JP2006319626A (en) * | 2005-05-12 | 2006-11-24 | Kenwood Corp | Screen speaker system |
| US7884529B2 (en) | 2005-05-31 | 2011-02-08 | Emo Labs, Inc. | Diaphragm membrane and supporting structure responsive to environmental conditions |
| JP2007116636A (en) * | 2005-10-24 | 2007-05-10 | Kenwood Corp | Screen speaker |
| JP2008205809A (en) * | 2007-02-20 | 2008-09-04 | Kenwood Corp | Speaker and speaker system |
| US9232316B2 (en) | 2009-03-06 | 2016-01-05 | Emo Labs, Inc. | Optically clear diaphragm for an acoustic transducer and method for making same |
| DE102015204583A1 (en) * | 2015-03-13 | 2016-10-20 | Brandenburgische Technische Universität Cottbus-Senftenberg | Sound transducer array with coupled transducers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2576454B2 (en) | 1997-01-29 |
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