JPH05204045A - Water film projecting screen device - Google Patents

Abstract

PURPOSE:To provide the water film projecting screen device which can easily form a large projecting screen even in a place of a high water depth, such as on the sea. CONSTITUTION:Water film forming nozzles 3, 4 which can inject water upward are supported on a float 10 floated on a water surface w, such as on the sea. The water under the water surface is lifted by a suction pump 2 and is press fed to these water film forming nozzles 3, 4, by which the projecting screen 13 consisting of the water film is formed thereabove.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water curtain projection screen device for forming a projection screen by a water curtain by spraying water under the water surface.

[0002]

2. Description of the Related Art There is known an outdoor movie theater in which a projection screen is set outdoors and an image is projected on the projection screen. As the projection screen used in this outdoor theater, a sheet-shaped or board-shaped screen similar to that used in an indoor theater is usually adopted. But,
Since these projection screens are suspended or stretched and attached to a support body such as a turret assembled at a predetermined height, assembly work and disassembly work are required to hold an outdoor theater, which is complicated.

With respect to this point, a fountain projection device has been proposed in which a projection screen is formed by a water curtain formed by a fountain and an image is projected on the projection screen (Japanese Patent Publication No. 40-16710, Japanese Patent Publication No. 40-16710). Publication No. 40-10837, Japanese Patent Publication No. 4037
-10315). According to this fountain projection apparatus, since a water absorption pump pumps water or the like to a plurality of nozzles arranged in a row to form a projection screen by a water curtain, a support member for supporting the projection screen like a sheet screen. Since it does not require assembling or disassembling work, it can easily hold an outdoor movie theater.

[0004]

By the way, in recent years, at various events, it is desired to effectively utilize the site space to allow more spectators to watch movies and the like. Therefore, the present applicant is considering installing a large projection screen on a vast surface of water such as the sea, lake or river to watch a movie or the like from the coast.

However, in the above-mentioned conventional fountain projection apparatus, since the nozzle and the pump are constructed as one unit and installed at the bottom of the water, the installation place is limited by the size, and the installation location is relatively deep in the sea or lake. It cannot be installed in a deep place. In addition, since the installation work on the bottom of the water is required, the installation work becomes extremely complicated. Furthermore, in order to avoid the wind effects of the projection screen, the position of the screen must be adjusted in the field, but when installed on the bottom of the water, such adjustment work is virtually impossible.

Therefore, an object of the present invention is to provide a water curtain projection screen device capable of easily forming a large projection screen even in a place where the depth of water such as the sea is large.

[0007]

In order to achieve the above object, the present invention is directed to a plurality of water curtain forming nozzles arranged in a row to form a projection screen with a water curtain, and a water surface on the water curtain forming nozzles. In a water curtain projection screen device including a water suction pump for pumping and pumping the lower water, the plurality of water curtain forming nozzles are arranged along the arrangement direction of these nozzles and on the water surface such as the sea. It is supported by a floated body.

[0008]

According to the above structure, the water curtain forming nozzle is supported on the floating body and floats above the water surface, so that the water curtain forming nozzle can be easily installed even on a deep water surface such as the sea or a lake.
A projection screen can be formed on the surface of the water.
Also, by supporting the water curtain forming nozzle on the floating body,
It is also possible to adjust the position of the projection screen simply by moving the floating body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described with reference to the drawings.

The water screen projection screen apparatus according to the present invention is
As shown in FIG. 1, a floating body 10 levitated on a water surface w such as the sea, a water pipe 1 having a predetermined length supported by the floating body 10, and seawater pumped up by pumping seawater to the water pipe 1. The water supply pump 2 and the water curtain forming nozzles 3 and 4 provided in the water supply pipe 1 are mainly configured.

The length of the water supply pipe 1 is arbitrarily determined according to the desired size of the projection screen 13 of the water curtain in the lengthwise direction. In this example, a metal pipe or a synthetic resin pipe divided into predetermined lengths is provided, and the divided water supply pipes 1 are connected to each other by a flexible joint pipe 7, whereby a desired pipe is formed. Is set to the length of.

A water supply pump 2 is connected to one end of the water supply pipe 1 for pumping seawater or the like and pumping it. In the illustrated example, the water supply pump 2 is attached to an operation ship 8 for towing the water pipe 1 in order to position it on the desired sea or the like. In this case, a towing connecting pipe 9 for towing the water feeding pipe 1 to the surface of water such as the sea is connected to a discharge port of the water feeding pump 2, and the water feeding pipe 1 is connected to the water feeding pump via the towing connecting pipe 9. 2 will be connected.

As shown in FIG. 3, the divided water supply pipe 1 is provided with a floating body 10 for floating and supporting the water supply pipe 1 along the longitudinal direction of the pipe 1. A water curtain forming nozzle for forming a projection screen 13 with a water curtain is provided on the upper surface of the water pipe 1. As shown in FIG. 2, the water curtain forming nozzle is provided between the fan-shaped nozzles 3 and the fan-shaped nozzles 3 which are provided at predetermined intervals in the longitudinal direction of the water supply pipe 1 and which are for fan-shaped jetting of water above. And a semi-circular nozzle 4 for spraying water in a semi-circular shape above it.

Specifically, the fan-shaped nozzle 3 is attached to the water supply pipe 1 as shown in FIG. 4 (a) and has a water spout 11 with an upward water discharge or a water spout angle α of about 20 degrees. .. Further, the fan-shaped nozzle 3 has a height of about 1 for discharging water or a fountain although it is arbitrarily determined by the water pressure supplied to the water supply pipe 1.
It is set to be 5 m. Of course, the height of the fountain can be arbitrarily determined according to the desired size of the screen.

On the other hand, the semicircular nozzle 4 has, as shown in FIG. 4 (b), a water spout 12 above the water pipe 1 for spouting or spouting water at a water spouting angle α of about 170 degrees. The semicircular nozzle 4 forms a water curtain under the water curtain spouted by the fan-shaped nozzle 3, and the fan-shaped nozzle 3 and the semicircular nozzle 4 form a uniform and flat water curtain above the water supply pipe 1. Will be done. The semi-circular nozzle 4 is located on the front surface or front surface side of the water curtain formed by the fan-shaped nozzle 3, forms a water curtain at the lower part, and atomizes on the surface of the water curtain formed by the fan-shaped nozzle 3. It is configured to stack water curtains.

In FIG. 1, 5 is a projection means, which is composed of a projector 14 for projecting an image or the like onto a projection screen 13 of a water curtain formed by the fan-shaped nozzle 3 and the semicircular nozzle 4. The projector 14 is provided on the hull 15 in the illustrated example so as to be positioned at a predetermined distance from the projection screen 13, but the projector 14 is not limited to this and may be installed on land such as a coast. ..

Next, a description will be given of the operation of this embodiment,
To form a projection screen 13 on the surface of a water such as a lake or a river and project an image or the like on the projection screen 13, first, see FIG.
As shown in (1), the water pipe 1 is towed by the operation ship 8 and installed at a predetermined position. Each of the water supply pipes 1 is floatingly supported on the water surface by the floating body 10. Further, the length of the water pipe 1 is arbitrarily determined according to the size of the projection screen 13. In this way, the water supply pipe 1 is floated and supported on the surface of water such as the sea, and then seawater or the like is pumped up from the water supply pump 2 and pumped to the water supply pipe 1. The water pressure-fed to the water pipe 1 is sprayed upward from the fan-shaped nozzle 3 and the semicircular nozzle 4 to form a projection screen 13 of a water curtain.

As shown in FIG. 5, the fountain ejected from the fan-shaped nozzle 3 is formed as a water curtain A from the fountain angle of the fountain port 11. The semi-circular nozzle 4 provided between the fan-shaped nozzles 3 has a large fountain angle and a low fountain or discharge height, and a water curtain B is formed at a relatively low position between the water curtains A. Thus, the projection screen 13 of a flat water curtain is formed above the water pipe 1 and along the longitudinal direction of the water pipe A without creating a void area below the water curtain A.

Further, since the semicircular nozzle 4 is located in front of the fan-shaped nozzle 3, the water curtain B formed thereby is formed on the surface of the water curtain A so as to cover it.

The fan-shaped nozzle 3 and the semicircular nozzle 4 are also provided.
The seawater or the like ejected from the atmosphere into the atmosphere mixes with the atmosphere to form water droplets, which are then separated into smaller water droplets to form a mist. Therefore, the screen 13 of the water curtain formed by the fountain
Is formed as a mist-like curtain with a very low degree of light transmission.

The water curtain formed as described above serves as a suitable projection screen 13. That is, by projecting an image from the projection means 5 provided on the hull 15 or the like disposed at an appropriate position away from the water curtain, a large number of spectators at the seaside, lakeside or riverside can view the image. it can. The sound required for this image is the hull 15
Alternatively, by flowing from the land, it is possible to form an open-air theater with a different taste.

As described above, according to the present embodiment, the water curtain forming nozzles 3 and 4 are supported by the floating body 10 and floated above the water surface, so that even in the sea, lake, river or the like where the water depth is relatively deep. A water curtain forming nozzle can be installed at a position, and a large projection screen 13 can be formed on the water surface. Further, since the water curtain forming nozzles 3 and 4 float above the water surface, no special installation work is required as in the conventional case, and the installation can be performed very simply by towing by the operation ship 8. Moreover, it is possible to extremely easily adjust the posture and the like of the projection screen 13 in order to avoid the influence of the wind.

Incidentally, as shown in FIG. 6, semicircular nozzles 4 may be integrally formed before and after the fan-shaped nozzle 3. The projection screen 13 of the water curtain formed by the above-mentioned structure is not affected by the wind blowing before and after the water curtain A.
The water curtain B can be fountain-formed on the front surface or the back surface, and a screen having a flat surface can be formed.

Further, in this embodiment, the fan-shaped nozzle 3
However, in order to form a larger water curtain, rod-shaped nozzles having a narrower spray angle and a higher water discharge height may be provided in combination.

[0025]

Since the present invention is as described above, it has the following excellent effects.

(1) Since the water curtain forming nozzle is floated above the water surface by the floating body, the water curtain forming nozzle can be easily installed even in the sea where the water is relatively deep, such as a lake, so that a large-sized projection can be performed easily. A screen can be formed.

(2) Since the water curtain forming nozzle is supported by the floating body, the position of the projection screen can be adjusted simply by moving the floating body, and the influence of wind or the like can be easily avoided.

[Brief description of drawings]

FIG. 1 is a conceptual explanatory diagram of the present invention.

FIG. 2 is a front view showing the connection of water supply pipes and the arrangement of nozzles according to the present invention.

FIG. 3 is a vertical sectional view of FIG.

FIG. 4 is a front view of a water curtain forming nozzle according to the present invention, (a)
Shows a fan-shaped nozzle and (b) shows a semicircular nozzle.

FIG. 5 is a conceptual diagram of a water curtain formed by the water curtain screen device of the present invention.

FIG. 6 is a partially cutaway side view showing a modified embodiment.

[Explanation of symbols]

 1 water pipe 2 water supply pump 3 fan-shaped nozzle (water curtain forming nozzle) 4 semicircular nozzle (water curtain forming nozzle) 5 projection means 10 floating body 13 water curtain projection screen

Front page continuation (72) Inventor Mitsuo Watanabe 3-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Ltd. Tokyo Second Factory (72) Inventor Kunihiro Miyashita 3-1-15-1 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Tokyo Second Factory (72) Inventor Fumihiko Kawamata 3-15-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Tokyo Second Factory (72) Inventor Hitoshi Miyagawa Marunouchi, Chiyoda-ku, Tokyo 3-1-117 Ishi Kawashima Harima Heavy Industries, Ltd. Head Office Annex

Claims (1)

[Claims] 1. A plurality of water curtain forming nozzles arranged in a row to form a projection screen with a water curtain, and a water absorption pump for pumping and pumping underwater water to these water curtain forming nozzles. In a water curtain projection screen device,
A water curtain projection screen device, wherein the plurality of water curtain forming nozzles are supported by a floating body which is arranged in an arrangement direction of the nozzles and which is floated above a water surface such as the sea.