JPH02204775A - Water screen projecting screen forming device - Google Patents
Water screen projecting screen forming deviceInfo
- Publication number
- JPH02204775A JPH02204775A JP1023816A JP2381689A JPH02204775A JP H02204775 A JPH02204775 A JP H02204775A JP 1023816 A JP1023816 A JP 1023816A JP 2381689 A JP2381689 A JP 2381689A JP H02204775 A JPH02204775 A JP H02204775A
- Authority
- JP
- Japan
- Prior art keywords
- water
- screen
- nozzle
- water curtain
- projection screen
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 142
- 239000007921 spray Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 2
- 239000007924 injection Substances 0.000 abstract 2
- 238000002834 transmittance Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007850 fluorescent dye Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/608—Fluid screens
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、新規な水幕映写スクリーン形成装置に係り、
特にノズルから噴水される水幕により映写スクリーンを
形成すると共に形成される水幕映写スクリーン上により
鮮明な映像を写し出すことを可能にした装置に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a novel water curtain projection screen forming device,
In particular, the present invention relates to a device that forms a projection screen using a water curtain sprayed from a nozzle and makes it possible to project clearer images on the formed water curtain projection screen.
［従来の技術］
一般に野外に映写スクリーンを設定し、これに映像を投
影するようにした野外映画劇場は知られている。[Prior Art] Generally, outdoor movie theaters are known in which a projection screen is set outdoors and images are projected onto the screen.
この野外劇場に用いられる映写スクリーンは屋内劇場に
用いられると同様なシート状のものあるいはボード状の
ものが知られている。これら映写スクリーンは°所定の
高さに組立てられた櫓等の支持体に吊り下げられあるい
は張設されて取り付けられる。The projection screens used in outdoor theaters are known to be sheet-like or board-like, similar to those used in indoor theaters. These projection screens are hung or stretched from a support such as a tower assembled at a predetermined height.
従来の野外映画劇場は専ら陸上に映写スクリーンが設け
られるのが常であり、多くの観客に映画等を観賞させる
場合にはより大きな映写スクリーンが要求されることに
なる。Conventional outdoor movie theaters usually have a projection screen installed exclusively on land, and a larger projection screen is required if a large number of viewers are to watch a movie.
映写スクリーンを大型にした場合にはこれを据付けるた
めの支持体を大きくしなければならず、その組立て作業
や解体作業が煩雑になる。また、大型映写スクリーンを
設ける場合にはスクリーンと観客との離間距離を所定に
取ることにより、大きな敷地スペースが要求されること
になっていた。If the projection screen is made larger, the support for installing it must be made larger, and the assembly and disassembly work becomes complicated. Furthermore, when a large projection screen is installed, a large amount of site space is required by maintaining a predetermined distance between the screen and the audience.
海あるいは湖等に臨んだ場所に野外映画劇場を設置する
ことが提案されるが、特に、屋内劇場用のスクリーンを
海上環の水面上に支持させることはかなり困難なことで
あると共に、スクリーンの大きさにも限界があった。It has been proposed to set up an outdoor movie theater in a location facing the sea or a lake, but it is particularly difficult to support a screen for an indoor theater on the water surface of a maritime ring, and the screen There were also limits to size.
そこで、本出願人は先に所定の長さを有する送水管にそ
の長手方向に沿って所定間隔毎ノズルを設けて、これら
ノズルから水を噴水させて水幕による映写スクリーンを
形成する装置を提案した。Therefore, the present applicant has proposed a device in which a water pipe having a predetermined length is provided with nozzles at predetermined intervals along its length, and water is spouted from these nozzles to form a projection screen using a water curtain. did.
この装置によれば、水面上、陸上等の任意な場所に容易
に且つより大型な水幕による映写スクリーンを形成する
ことを可能にし、海岸等を利用して大きな野外映画劇場
あるいは広告用施設を建設することができることになる
。According to this device, it is possible to easily form a larger projection screen using a water curtain at any location, such as on the surface of the water or on land, and it is possible to create a large outdoor movie theater or advertising facility by using the coast, etc. It will be possible to construct.
［発明が解決しようとする課題］
本出願人が提案した水幕による映写スクリーン装置によ
れば水上あるいは陸上において容易に大型なスクリーン
を形成することができる。しかしながら、ノズルからそ
の上方あるいは下方に水を噴水させて水草を形成するこ
とになるので、水幕の光の透過率には限界がある。この
ため、水幕に光によって映像を投影させると、光の一部
が水幕を透過し、水幕上に写し出された映像の一部が不
鮮明になる傾向があった。[Problems to be Solved by the Invention] According to the water screen projection screen device proposed by the present applicant, a large screen can be easily formed on water or on land. However, since aquatic plants are formed by spraying water above or below from a nozzle, there is a limit to the light transmittance of the water curtain. For this reason, when an image is projected onto the water curtain using light, a portion of the light passes through the water curtain, and a portion of the image projected onto the water curtain tends to become unclear.
そこで、本発明は上記課題を解決すべくなされたもので
、映写効果を充分得られる水幕映写スクリーン形成装置
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a water curtain projection screen forming apparatus that can provide a sufficient projection effect.
［課題を解決するための手段］
本発明は、上記目的を達成するなめに、噴霧状の水から
なる水幕映写スクリーンを形成するように水を噴出する
水幕形成管と、水と空気等の気体とを混合させて水の中
に気泡を入れ、この気泡を含んだ水を上記水幕形成管に
輸送するための気水混合装置とを備えたものである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a water curtain forming tube that spouts water to form a water curtain projection screen made of water in the form of atomized water, water, air, etc. and a water-air mixing device for introducing air bubbles into the water by mixing the water with the gas and transporting the water containing the air bubbles to the water curtain forming tube.
［作用］
上記構成により、気水混合装置によって水と空気等の気
体とが混合されて水の中に気泡を入れ、この気泡を含ん
だ水が水幕形成管に輸送される。[Operation] With the above configuration, water and a gas such as air are mixed by the air-water mixing device to introduce air bubbles into the water, and the water containing the air bubbles is transported to the water curtain forming tube.
この水幕形成管に輸送された水はその長手方向に沿って
噴水され、水幕形成管の長手方向に沿った所定の高さの
水幕の映写スクリーンが形成される。The water transported to the water curtain forming tube is sprayed along the longitudinal direction of the water curtain forming tube, thereby forming a water curtain projection screen having a predetermined height along the longitudinal direction of the water curtain forming tube.
このように、気泡を含んだ水が噴水されて水幕の映写ス
クリーンが形成されることにより、スクリーンは白濁状
あるいは霧状の幕として形成され、光の透過率がきわめ
て低くなるために、スクリーン上に映写手段から映像を
投影させると、そのスクリーン上の映像はより鮮明に写
し出される。In this way, water containing bubbles is sprayed to form a water curtain projection screen, and the screen is formed as a cloudy or mist-like curtain, and the light transmittance is extremely low. When an image is projected onto the screen from a projection means, the image on the screen becomes clearer.
［実施例］ 本発明の好適一実施例を添付図面に基づいて説明する。[Example] A preferred embodiment of the present invention will be described based on the accompanying drawings.
本発明に係る水幕映写スクリーン形成装置は、第１図に
示すように、上方に設けられた支持体１に配置され、所
定の長さを有すると共にその長手方向に沿ってその下方
に水を噴水して水幕映写スクリーン２を形成するための
水幕形成管３と、水と空気等の気体とを混合させて水の
中に気泡を入れ、この気泡を含んだ水を上記水幕形成管
３に輸送するためのエゼクタ４とから主に構成されてい
る。ここでエゼクタ４は気水混合装置の一例として使用
しである。As shown in FIG. 1, the water curtain projection screen forming device according to the present invention is disposed on a support 1 provided above, has a predetermined length, and projects water downward along its longitudinal direction. A water curtain forming tube 3 for forming a water curtain projection screen 2 by spraying water, and a water curtain forming tube 3 for mixing water and a gas such as air to introduce air bubbles into the water, and using the water containing the air bubbles to form the water curtain. It mainly consists of an ejector 4 for transporting to a pipe 3. Here, the ejector 4 is used as an example of a steam/water mixing device.
水幕形成管３は、所望する水幕の映写スクリーン２の長
さ方向の大きさに応じてその長さは任意に決定されると
共に、所定の長さ毎に分割された金属管あるいは合成樹
脂製の管で構成されている。The length of the water curtain forming tube 3 is arbitrarily determined according to the size of the desired water curtain in the length direction of the projection screen 2, and the length of the water curtain forming tube 3 is a metal tube or a synthetic resin divided into each predetermined length. It is made up of tubes made of
これら分割された各水幕形成管３は継手管５によって互
いに連結され所望の長さに設定される。さらに、水幕形
成管３の下面部にはその長手方向に所定の間隔を隔てて
これより下方に扇状に噴水させるための扇状ノズル６と
、これら扇状ノズル６との間に位置させられてその下方
に半円状に噴水させるための半円ノズル７とがそれぞれ
設けられている。具体的には扇状ノズル６は、第３図に
示すように、水幕形成管３に取付けられ、下方への放水
乃至噴水角度αが約２０度の噴水口８を有している。ま
た、水幕形成管３内に給水される水圧によって任意に決
定されるが上記扇状ノズル６は一応放水乃至噴水高さは
約１５ｍとなるように設定されている。尚、この噴水の
高さは所望するスクリーンの大きさによって任意に決定
し得ることは勿論である。These divided water curtain forming pipes 3 are connected to each other by a joint pipe 5 and set to a desired length. Furthermore, fan-shaped nozzles 6 are provided on the lower surface of the water curtain forming tube 3 at a predetermined interval in the longitudinal direction of the pipe and are positioned between these fan-shaped nozzles 6 for spraying water in a fan shape downward. A semicircular nozzle 7 for spraying water in a semicircular shape is provided below. Specifically, as shown in FIG. 3, the fan-shaped nozzle 6 is attached to the water curtain forming pipe 3, and has a water fountain 8 that discharges water downward or has a fountain angle α of about 20 degrees. Further, the fan-shaped nozzle 6 is set so that the height of the water discharge or fountain is approximately 15 m, although this is arbitrarily determined depending on the water pressure supplied into the water curtain forming pipe 3. It goes without saying that the height of this fountain can be arbitrarily determined depending on the desired screen size.
一方、半円ノズル７は、第４図に示すように、水幕形成
管３の下方に放水角度αが約１７０度で放水乃至噴水す
るための噴水口９を有している。On the other hand, as shown in FIG. 4, the semicircular nozzle 7 has a water fountain 9 below the water curtain forming tube 3 for discharging water or spouting water at a water discharge angle α of about 170 degrees.
この半円ノズル７は上記扇状ノズル６によって噴水され
ろ水幕の上部に水草を形成し、扇状ノズル６と半円ノズ
ル７とにより水幕形成管３の下方に均一で且つ平坦な水
草を形成することとなる。This semicircular nozzle 7 forms aquatic plants on the upper part of the water curtain that is sprayed by the fan-shaped nozzle 6, and the fan-shaped nozzle 6 and the semicircular nozzle 7 form uniform and flat aquatic plants below the water curtain forming pipe 3. I will do it.
また、水幕形成管３の一端部には連結管１０が接続され
、この連結管１０はエゼクタ４の吐出口１１に接続され
ている。第２図に示すように、エゼクタ４の外周面は円
筒体状に形成され、一端が導入口１２に、曲端が吐出口
１１にそれぞれ形成されていると共に、その側面部の中
央部には空気等の気体を吸込むための吸込管１３が接続
されている。また、エゼクタ４の内部は、吸込管１３よ
り上流側に水等の流体を噴出するための渦巻羽根１４を
有するノズル１５が形成されていると共に、それより下
流側にノズル１５から噴出される流体と吸込管１３から
の空気等の気体とを混合する混合管１６が形成され、ノ
ズル１５から無害な螢光染料を含んだ水を噴出すること
により、混合管１６で水と空気等の気体とを混合させて
水の中に気泡が入るように構成されている。その混合管
１６は、管状に形成され、流体の流れに沿って順に、漸
次縮径される混合室１７と、その縮径された径を一定に
保つ平行部１８と、その平行部１８から漸次拡径される
ディフュザ１９とから構成されている。Further, a connecting pipe 10 is connected to one end of the water curtain forming pipe 3, and this connecting pipe 10 is connected to a discharge port 11 of the ejector 4. As shown in FIG. 2, the outer peripheral surface of the ejector 4 is formed into a cylindrical shape, and one end is formed as the inlet 12 and the curved end as the discharge port 11. A suction pipe 13 for sucking in gas such as air is connected. Further, inside the ejector 4, a nozzle 15 having a spiral vane 14 for ejecting fluid such as water to the upstream side of the suction pipe 13 is formed, and a fluid ejected from the nozzle 15 to the downstream side thereof. A mixing tube 16 is formed to mix water and a gas such as air from the suction tube 13, and by spouting water containing harmless fluorescent dye from the nozzle 15, the water and gas such as air are mixed in the mixing tube 16. The structure is such that air bubbles are created in the water by mixing the water. The mixing tube 16 is formed into a tubular shape, and includes a mixing chamber 17 whose diameter is gradually reduced in order along the fluid flow, a parallel portion 18 that keeps the reduced diameter constant, and a mixing chamber 17 that gradually decreases in diameter from the parallel portion 18. It is composed of a diffuser 19 whose diameter is expanded.
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
水面上、陸上等の任意な場所に映写スクリーン２を形成
し、これに映像等を投影して写し出すには、先ず、水幕
形成管３を所定位置に設置する。In order to form a projection screen 2 at any arbitrary location, such as on the water surface or on land, and to project images onto it, first, a water curtain forming tube 3 is installed at a predetermined position.
水草形成管３は上方に設けられた支持体１によりそれぞ
れ支持されることになる。また、水幕形成管３の長さは
映写スクリーン２の大きさによって任意に決定されるこ
とになる。このように水幕形成管３を支持体１に支持さ
せた後、水に無害な螢光染料を溶かせる。なお水に溶か
せる螢光染料は数ｐｐＩ１位でよい、その螢光染料を含
んだ水をエゼクタ４の導入口１２に圧送する。The aquatic plant formation tubes 3 are each supported by the support body 1 provided above. Further, the length of the water curtain forming tube 3 is arbitrarily determined depending on the size of the projection screen 2. After the water curtain forming tube 3 is supported on the support 1 in this manner, a harmless fluorescent dye is dissolved in water. The amount of fluorescent dye that can be dissolved in water is only a few ppI, and the water containing the fluorescent dye is pumped to the inlet 12 of the ejector 4.
エゼクタ４に圧送された水の駆動流が渦巻羽根１４を介
してノズル１５から噴流となって混合室１７に噴出され
る。すると、吸込管１３からの空気は、混合室１７に吸
込まれ、駆動流の噴出によって混合室１７に生ずる負圧
と駆動流の粘性とによって引きずられて駆動流と一緒に
なって平行部１８に入る。この混合室１７と平行部１８
とで駆動流の水と空気とが完全に混合されて、水の中に
気泡が入った気液混合水ができる。そして、気泡を含ん
だ水はディフュザ１９によって圧力を高められて吐出口
１１から吐出され、連結管１０を介して水草形成管３に
輸送されることになる。The driven flow of water forced into the ejector 4 is ejected into the mixing chamber 17 as a jet from the nozzle 15 via the swirl vane 14 . Then, the air from the suction pipe 13 is sucked into the mixing chamber 17, dragged by the negative pressure generated in the mixing chamber 17 by the jetting of the driving flow and the viscosity of the driving flow, and is combined with the driving flow and flows into the parallel section 18. enter. This mixing chamber 17 and parallel section 18
The water and air in the driving flow are completely mixed, creating gas-liquid mixed water with air bubbles in the water. Then, the water containing air bubbles is increased in pressure by the diffuser 19 and discharged from the discharge port 11, and is transported to the aquatic plant formation pipe 3 via the connecting pipe 10.
そして、水幕形成管３に輸送された気泡を含んだ水は扇
状ノズル６及び半円ノズル７からその下方に噴水され光
の透過率の非常に低い霧状の幕となり、水幕の映写スク
リーン２が形成されることになる。このため、水草によ
り映写スクリーン２を形成することができるために、そ
の大きさも任意に形成することができる。The water containing air bubbles transported to the water curtain forming tube 3 is sprayed downward from the fan-shaped nozzle 6 and the semicircular nozzle 7, forming a mist-like curtain with very low light transmittance, and forming a projection screen of the water curtain. 2 will be formed. Therefore, since the projection screen 2 can be formed of aquatic plants, its size can also be formed arbitrarily.
第５図に示すように、扇状ノズル６から噴出された噴水
はその噴水口８の噴水角度から水幕Ａとして形成される
。また、これら扇状ノズル６間に設けられた半円ノズル
７はその噴水角度が大きく且つ噴水乃至放水高が低く設
定されており、上記水幕Ａ間にあって比較的高い位置に
水幕Ｂが形成され、水幕Ａ間の上方に空隙域を生じさせ
ることなく水幕形成管３の下方に且つその長手方向に沿
って平坦な水幕の映写スクリーン２を形成することにな
る。As shown in FIG. 5, the fountain spouted from the fan-shaped nozzle 6 is formed as a water curtain A from the fountain angle of the fountain port 8. Further, the semicircular nozzle 7 provided between these fan-shaped nozzles 6 has a large fountain angle and a low fountain or water discharge height, and a water curtain B is formed at a relatively high position between the water curtains A. , a flat water curtain projection screen 2 is formed below the water curtain forming tube 3 and along its longitudinal direction without creating a void area above the water curtain A.
したがって、エゼクタ４によって水と空気とが混合され
て水の中に気泡が入り、この気泡を含んだ水が噴水され
て水幕映写スクリーン２が形成されるので、そのスクリ
ーン２は白濁状あるいは霧状の幕として形成されるため
に、水茎のスクリーン２は光の透過率がきわめて低くな
る。Therefore, water and air are mixed by the ejector 4 and air bubbles are introduced into the water, and the water containing the air bubbles is sprayed out to form the water curtain projection screen 2, so that the screen 2 becomes cloudy or foggy. Since the water stem screen 2 is formed as a shaped screen, its light transmittance is extremely low.
上述のようにして、形成された水幕は、好適な映写スク
リーン２となり、この水幕に離れて、適宜位置に配置さ
れた映写手段２０から映像を投影させることができる。The water curtain formed as described above becomes a suitable projection screen 2, on which an image can be projected from a projection means 20 placed at an appropriate position apart from the water curtain.
また、水草映写スクリーン２は、白濁状あるいは霧状の
幕に形成され、光の透過率がきわめて低くなるので、そ
のスクリーン２上−に写し出された映像はより鮮明に写
し出され、映写効果を充分得られることになる。さらに
、水幕映写スクリーン２を形成する水には螢光染料が含
まれているから、より一層確実に映像を鮮明に写し出す
ことができる。In addition, the aquatic plants projection screen 2 is formed into a cloudy or mist-like curtain, and the light transmittance is extremely low, so the image projected on the screen 2 is more clearly projected and the projection effect is fully realized. You will get it. Furthermore, since the water forming the water curtain projection screen 2 contains fluorescent dye, it is possible to project images more reliably and clearly.
したがって、映写効果を充分得られるので、観客に映像
を鑑賞させることができ、この映像に伴って必要とする
音声は劇場内に設置されたスビカから流すことにより、
趣の異なった屋内劇場を形成することができる。Therefore, a sufficient projection effect can be obtained, allowing the audience to watch the video, and the audio required to accompany the video can be played from the subica installed in the theater.
It is possible to create an indoor theater with a different flavor.
なお、本実施例は水を上方から下方へ噴水させて水幕の
映写スクリーンを形成させる場合について説明したが、
水を噴水させて水草映写スクリーンを形成させればよく
、水を上方、側方または斜方へ噴水させて水幕映写スク
リーンを形成させるようにしても勿論よい。Note that in this embodiment, a case has been described in which a water curtain is formed by spraying water from above to below.
It is sufficient to form a water plant projection screen by spouting water, and it is of course also possible to form a water curtain projection screen by spouting water upward, sideways, or diagonally.
［発明の効果］
以上要するに本発明によれば、気水混合装置で水と空気
等の気体とを混合させて水の中に気泡を入れ、この気泡
を含んだ水を水幕形成管から噴水して水幕映写スクリー
ンを形成したので、スクリーンの光の透過率が低くなり
、そのスクリーン上により鮮明な映像を写し出すことが
できるという優れた効果を発揮する。[Effects of the Invention] In summary, according to the present invention, air bubbles are introduced into the water by mixing water with a gas such as air using an air/water mixing device, and the water containing the air bubbles is poured into a fountain from a water curtain forming pipe. Since the water curtain projection screen is formed by using a water curtain, the light transmittance of the screen is reduced, and a clearer image can be projected on the screen, which is an excellent effect.
第１図は本発明の概念説明図、第２図は本発明に係るエ
ゼクタの断面図、第３図は本発明に係る扇状ノズルの正
面図、第４図は同じく半円ノズルの正面図、第５図は本
発明の水幕形成管によって形成される水草の概念図であ
る。
図中、２は水草映写スクリーン、３は水幕形成管、４は
エゼクタである。FIG. 1 is a conceptual diagram of the present invention, FIG. 2 is a sectional view of an ejector according to the present invention, FIG. 3 is a front view of a fan-shaped nozzle according to the present invention, and FIG. 4 is a front view of a semicircular nozzle. FIG. 5 is a conceptual diagram of aquatic plants formed by the water curtain forming tube of the present invention. In the figure, 2 is an aquatic plant projection screen, 3 is a water curtain forming tube, and 4 is an ejector.
Claims (1)
ように水を噴出する水幕形成管と、水と空気等の気体と
を混合させて水の中に気泡を入れ、この気泡を含んだ水
を上記水幕形成管に輸送するための気水混合装置とを備
えたことを特徴とする水幕映写スクリーン形成装置。1. A water curtain forming tube that spews out water to form a water curtain projection screen made of water in the form of a spray, and a water curtain forming tube that mixes water with a gas such as air to create air bubbles in the water. A water curtain projection screen forming device comprising: a steam/water mixing device for transporting water to the water curtain forming tube.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1023816A JPH02204775A (en) | 1989-02-03 | 1989-02-03 | Water screen projecting screen forming device |
| CA000596264A CA1326778C (en) | 1988-04-14 | 1989-04-10 | Screen forming apparatus |
| US07/337,009 US4974779A (en) | 1988-04-14 | 1989-04-12 | Screen forming apparatus and method |
| BR898901761A BR8901761A (en) | 1988-04-14 | 1989-04-13 | SCREEN FORMATING APPLIANCE |
| KR1019890004927A KR900016793A (en) | 1988-04-14 | 1989-04-14 | Screen-in Forming Device |
| EP89106710A EP0337480B1 (en) | 1988-04-14 | 1989-04-14 | Screen forming apparatus |
| DE8989106710T DE68903775T2 (en) | 1988-04-14 | 1989-04-14 | DEVICE FOR FORMING A UMBRELLA. |
| US07/536,812 US5067653A (en) | 1988-04-14 | 1990-06-12 | Screen forming apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1023816A JPH02204775A (en) | 1989-02-03 | 1989-02-03 | Water screen projecting screen forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02204775A true JPH02204775A (en) | 1990-08-14 |
Family
ID=12120874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1023816A Pending JPH02204775A (en) | 1988-04-14 | 1989-02-03 | Water screen projecting screen forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02204775A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773621A1 (en) * | 1998-01-12 | 1999-07-16 | Lasershow Technik Lke | NOZZLE BAR DEVICE FOR A PROJECTION SCREEN |
| EP0992829A1 (en) * | 1998-10-07 | 2000-04-12 | Scott R. Johnson | Image projection system |
| ES2355665A1 (en) * | 2008-05-20 | 2011-03-30 | Juan Carretero Llorente | Graphic water screen through digital control. (Machine-translation by Google Translate, not legally binding) |
-
1989
- 1989-02-03 JP JP1023816A patent/JPH02204775A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2773621A1 (en) * | 1998-01-12 | 1999-07-16 | Lasershow Technik Lke | NOZZLE BAR DEVICE FOR A PROJECTION SCREEN |
| EP0992829A1 (en) * | 1998-10-07 | 2000-04-12 | Scott R. Johnson | Image projection system |
| US6556178B1 (en) | 1998-10-07 | 2003-04-29 | Scott R. Johnson | Image projection system |
| ES2355665A1 (en) * | 2008-05-20 | 2011-03-30 | Juan Carretero Llorente | Graphic water screen through digital control. (Machine-translation by Google Translate, not legally binding) |
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