JPH04329590A - Balloon movie - Google Patents

Abstract

PURPOSE:To project an image on a spherical screen type balloon from inside. CONSTITUTION:The balloon movie is equipped with a projection device 2 which is provided in the balloon, a high-pressure tank 4 which sends gaseous helium to the balloon 1 through a high-pressure hose in a composite cable 3, and a moving vehicle type ground station 5 which sends a video signal to the projection device 2 through a signal cable in the composite cable 3. In the balloon 1, a transparent balloon 8 which has an external diameter shorter than the external diameter of the balloon 1 is formed and between the transparent balloon 8 and balloon 1, plural transparent partition films 6 are fitted to form one internal chamber and plural external chambers, thereby forming restricted passages 7 between the internal chamber and external chambers respectively. The high-pressure hose penetrates the reinforcement part 9 of the balloon 1 to communicate with the transparent balloon 8.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balloon movie projecting an image onto a spherical screen balloon from inside.

0002

2. Description of the Related Art Recently, advertising vehicles called "mobile billboards" have been roaming around town with replaceable billboards or electronic bulletin boards loaded on their carriers.

0003

[Problems to be Solved by the Invention] This advertising vehicle only transmits advertising content to people walking on the sidewalk near the roadway. Furthermore, since the advertisement content is not playful, for example, content unrelated to the advertisement, such as videos or movies, is not displayed, it is very difficult to arouse pedestrians' attention to the advertisement content.

[0004] Most advertising vehicles are loaded with signboards and the like that must be illuminated, so they have little advertising effect on pedestrians who are usually walking around at night for fun, and cannot normally be used at night.

[0005] In view of the above-mentioned problems, an object of the present invention is to enable a large number of people to enjoy the display by displaying moving images such as advertising media and movies in the air, and which can be used especially at night. do.

[0006]

[Means for Solving the Problems] In order to achieve this object, the balloon movie according to the present invention includes a semi-transparent balloon having a substantially spherical surface, an omnidirectional projection device provided inside the balloon, and a projection device provided inside the balloon. The balloon is equipped with a high-pressure tank that sends inert gas such as helium to the balloon via a high-pressure hose, and a ground station that sends video signals via cable to the projection device inside the balloon.

Further, in the present invention, a plurality of transparent partition membranes are attached inside the balloon to form a plurality of chambers, and each chamber is connected to a high-pressure hose through a constriction passage.

[0008] Said cable is a composite power cable for transmitting electrical power and electrical video signals to said projection device, said composite power cable being preferably combined with a high pressure hose to form a composite cable.

[0009]

[Embodiment] As shown in FIG. 1, the balloon movie according to the present invention includes a semi-transparent balloon 1 having a substantially spherical surface, an omnidirectional projection device 2 provided inside the balloon, and a helium etc. a high-pressure tank 4 that sends an inert gas through a high-pressure hose in a composite cable 3, and a ground station 5 that sends a video signal to a projection device 2 in the balloon via a signal cable in the composite cable 3. There is.

First, when the semi-transparent balloon 1 is inflated with helium gas to, for example, 1 to 2 gauge pressure, the pressure is 15 to 20.
It has a diameter of meters. As shown in the cross-sectional view of FIG. 1(B), a plurality of transparent partition membranes 6 are attached to the inside of this semi-transparent balloon 1 to form a plurality of chambers, each of which is connected to a high pressure via a throttle passage 7. Connected to the hose. Furthermore, Figure 1
In (B), one throttle passage 7 is shown for simplification.

A transparent balloon 8 having an outer diameter shorter, for example, by 1 meter than the outer diameter of the balloon 1 is formed inside the translucent balloon 1, and a plurality of transparent partitions are provided between the transparent balloon 8 and the translucent balloon 1. The membrane 6 may be attached to form an inner chamber and a plurality of outer chambers, each with a restriction passage 7 between the inner chamber and each outer chamber. In this case, the high-pressure hose 3 passes through the reinforcing portion 9 of the translucent balloon 1 and communicates with the transparent balloon 8.

Therefore, even if a part of the surface of the translucent balloon 1 were to break, the helium in the chamber located on the broken surface (outer chamber) would immediately leak, but the helium in the remaining chamber (outer chamber) or The helium in the inner chamber gradually leaks through the throttle passage 7, and the balloon 1 suddenly loses its buoyancy and does not fall suddenly.

Furthermore, as shown in FIG. 2, the projection device 2 has the following features:
For example, a light source 10 such as a halogen lamp and a transmissive liquid crystal display 1 whose display surface is arranged orthogonal to the axis 11 of the light source
2, and a projection lens 13 whose axis is aligned with the axis 11 of the light source and the center point of the display 12, and which is arranged in front of the display surface to form an image of the display surface onto the screen of the translucent balloon 1. at least one projector 14 with
It consists of

In the case of one projector 14, it is preferable to install it on the floor or ceiling of the translucent balloon 1. In this case, a reflecting mirror (not shown) and a light source and a display are provided behind the light source. A condenser lens 15 is added between the surface and the surface. Further, as the projection lens 13, an ultra-wide-angle lens such as a fisheye lens is used.

Further, the projector 14 is installed at the center of the balloon 1 in the case of two projectors. In this case, two condenser lenses 15 are added between the light source 10 and the two displays 12, aligned with the axis 11, and two condenser lenses such as a fisheye lens are added.
ultra-wide-angle lenses 13 are used.

When there are only one or two projectors 14, the image on the surface of the balloon 1 is distorted, but an interesting effect can be expected. In order to obtain an undistorted image of the surface of the balloon 1, at least four projectors 14 are preferably used.

That is, in the case of four projectors 14, a frame is formed approximately at the center of the balloon 1 by the ridge lines of a regular tetrahedron, and the light source 10 is placed at the center of this framework. 4
An indicator 12 is attached to each surface of the face piece, and each indicator 12
A wide-angle imaging lens 13 is positioned in front of the camera. Therefore, the condenser lens 1 of each projector 14 is aligned with four axes arranged three-dimensionally at equal angles from the center of the light source 10.
5. The display device 12 and the imaging lens 13 are aligned. In order to avoid image distortion in the semi-transparent balloon 1 as much as possible, the number of display sections may be increased. For example, in the N display sections, a display is attached to each face of a regular N-hedron, and an imaging lens is positioned in front of each display.

Such a projection device 2 is suspended from the ceiling of the balloon 1 by a rope 16 or the like so as to be located approximately at the center inside the translucent balloon 1 shown in FIG. Supported by 3 points. Further, power is supplied to the light source 10 via a power cable, and a video signal is supplied to each display 12 via a signal cable.

These power and signal cables and high-pressure hoses are combined to form a composite cable 3 for ease of handling. Accordingly, the projection device 2 is supplied with electrical power and electrical video signals via a composite power cable. This composite cable 3 has one end connected to the root reinforcing portion 9 of the balloon 1, and the other end attached to a winding drum (cable reel) 18 supported by a fixed shaft.

FIG. 3 shows a section of the fixed shaft 20 that supports the cable reel 18. As shown in FIG. That is, the opening of the high-pressure hose at the other end of the composite cable 3 is connected to an annular space 21 surrounding the fixed shaft 20, and on the other hand, a vertical hole 22 is drilled in the axial direction in the fixed shaft 20. 22
A horizontal hole 23 is formed at a position corresponding to the annular space 21 . This annular space 21 has an annular central groove 2 formed in the inner wall of a cylindrical member 24 whose inner diameter is slightly larger than the outer diameter of the fixed shaft 20.
A horizontal hole 25 communicating with the central groove 21 is bored therein, and two to three annular auxiliary grooves 26 are formed on the inner wall on both sides of the central groove 21. The high-pressure hose therefore communicates with the vertical hole 22 of the fixed shaft 20 even during unwinding or winding of the composite cable. Moreover, the friction coefficient and helium leakage between the outer peripheral surface of the fixed shaft 20 and the inner wall of the cylindrical member 24 are minimized by the multistage auxiliary grooves 26. Further, a joint (not shown) into which a high-pressure hose can be inserted is screwed into the side hole 25.

A plurality of slip rings are formed between the other side of the fixed shaft 20 and the cable reel 18. First, the fixed shaft 20 is covered with, for example, a cylindrical insulating material 27, a plurality of metal rings are fastened to the outer circumferential surface of this insulating material, and a lead wire connected to each metal ring is inserted into the insulating material 27. is drawn out through the On the other hand, an insulating material 28 is bonded to the inner surface of the cable reel 18 to which springs (brushes) made of phosphor bronze or the like are respectively attached at positions in contact with the metal rings. Thus, power and electrical image signals are routed through each slip ring. Further, the composite cable 3 is wound on the reel 1 by a motor (not shown).
8 or by an even number of rollers or two endless belts sandwiching the composite cable from both sides. Additionally, an emergency stopper may be provided.

This cable reel 18 is attached to a loading platform 31 of an automobile 30, as shown in FIG. Furthermore, a helium high-pressure tank 4 connected to a vertical hole of the fixed shaft 11 via a high-pressure hose and a helium recovery compressor 32 that operates when recovering helium are installed on the loading platform 31. When supplying helium from the high-pressure tank 4 to the balloon 1, the solenoid valve 33 opens; when recovering helium from the balloon 1, the solenoid valve 33 closes and the compressor 32 operates.

Furthermore, a ground station, that is, a video transmission unit 5 is installed on the loading platform 31 to supply power to the light source 10 and the like and to supply image signals to each display 12 via a slip ring. This video transmission unit 5 monitors, for example, 4-channel video signals from a known video (tape or disk) playback device and simultaneously displays the display 12 in the balloon 1.
For example, the image can be sent to a computer and can be trimmed or processed in various ways by an image processor, for example. It can also be used as a relay station that receives radio waves that have undergone advanced image processing and projects them onto the balloon 1.

Of course, the loading platform 31 is formed with a retractable work floor 35 that expands the work space when tilted outward 90 degrees, and a balloon storage 36 that folds and stores the balloon 1 from which helium has been extracted. .

When broadcasting such a balloon movie near a crowded area of buildings 40 (see FIG. 1), helium is supplied to the balloon 1 to the extent that a buoyancy equivalent to the weight of the balloon 1 body and the composite cable 3 is obtained. . In this case, the balloon 1 rises in an egg-shaped manner as shown in FIG. 1A. When this egg-shaped balloon 1 is raised to a height where it does not come into contact with the neighboring buildings 40, helium is further supplied to the balloon 1, and the balloon 1 is inflated to its full extent and becomes approximately spherical as shown in FIG. 1(B). let Although the height of the spherical balloon 1 from the ground can be set freely, it is preferably 150 to 200 meters in consideration of the nighttime discrimination of humans.

At this point, the light source 10 is powered and each display 12 is provided with an image signal. When the lights are turned on, pedestrians at night notice an object floating in the air that suddenly appears, and when they realize that it is a screen displaying video or other images, they stop for a while to admire it. In addition, the light source 10 that is powered on and is lit emits high heat, but this high heat is conducted to, for example, a transparent film in the inner chamber by helium convection, and further to the outer surface of the translucent balloon 1 by helium convection in the outer chamber. The temperature inside the balloon 1 is cooled to within the operating temperature of the indicator 12. Further, the transparent balloon 8 and the partition film 6 will not melt.

[0027] In the present invention, the light source and display were installed inside the balloon, but instead of this, these light sources and the display were installed on the loading platform, and the display pixels (tens of thousands of pixels)
It is also possible to send only the information using tens of thousands of bundles of optical cables in a composite cable so that the end faces of these optical cables correspond to the positions of the indicators in the balloon.

[0028]

[Effects of the Invention] As explained above, the balloon movie according to the present invention has a tremendous advertising effect because images such as moving images can be shown over a wide range at night.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a balloon movie according to the present invention.

FIG. 2 is a schematic perspective view of a projector according to the invention;

3 is a detailed partial cross-sectional view of the cable reel and fixed shaft of FIG. 1; FIG.

FIG. 4 is a schematic plan view of the above-ground portion of the balloon movie according to the present invention.

[Explanation of symbols]

１　　　　　Barun 2 Projection device 3 Composite cable 4 High pressure tank 5 Ground station

Claims (3)

[Claims] Claim 1: A semi-transparent balloon having a substantially spherical surface, a projection device installed inside the balloon, a high-pressure tank that supplies helium to the balloon via a high-pressure hose, and a cable connected to the projection device inside the balloon. and a ground station that sends video signals. 2. The balloon movie according to claim 1, wherein a plurality of transparent partition membranes are attached within the balloon to form a plurality of chambers, each chamber being connected to a high pressure hose via a constriction passage. 3. The balloon of claim 2, wherein said cable is a composite power cable for transmitting electrical power and electrical video signals to said projection device, said composite power cable being combined with a high pressure hose to form a composite cable. movie.