WO2021134567A1

WO2021134567A1 - Helikite display

Info

Publication number: WO2021134567A1
Application number: PCT/CN2019/130718
Authority: WO
Inventors: 李庆远
Original assignee: 李庆远
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-08

Abstract

Disclosed is a Helikite display, which realizes the function of aerial display by utilizing the visual residue of a point light source rotating near the outer surface of an aerostat on human eyes.

Description

Helium Kite Display

Field of invention

The invention relates to a helium kite display, in particular to a device that realizes aerial display by utilizing the visual residue of a point light source rotating near the outer surface of an aerostat to human eyes.

Background technique

There are some spherical LED displays on the market, which are fixed indoors or outdoors through brackets or suspension cables to display images of the earth. Among them, the LED light source is fixed or rotating. The latter uses the rotating LED point light source to leave the human eye's vision. When the LED point light source moves to a specific position, it turns on or off, so as to achieve the equivalent of ordinary display pixel point lighting. Or turn off the effect.

Japanese telecommunications operator NTT Docomo invented the world's first spherical-illuminated drone. The four-axis drone achieves high mobility through the spherical centered four-axis drone, and uses the rotating LED point light source to achieve the effect of aerial display on the visual residue of the human eye. , And it is planned to be used in sports events or high-tech concerts, and to remind the crowd in emergency situations. It is designed for high mobility and can be operated almost anywhere. However, with current technology, battery life is a big obstacle. Although high energy density can be achieved through fuel, the problem is that drones are generally not allowed to fly in densely populated places. If fuel is used, it will be more dangerous.

In addition, the principle of the UAV with a spherical display is only to use the four-axis UAV with the center of the sphere to move the traditional and fixed hoisting spherical LED display. The embodiment needs to solve the problem of the air flow generated by the rotating LED strip and the flying of the UAV. To minimize the structural weight and other technical problems, the live video is extremely noisy. At present, it is only 0.88 meters in diameter. If it is enlarged enough to impress the stadium with tens of thousands or even hundreds of thousands of people, the noise level will be close to that of a manned helicopter, which greatly reduces its practicality, let alone. The danger of an accident. If fuel is used, the plane crashes over a dense crowd, causing a fire at the scene, causing the crowd to panic and large-scale stampede, and its harm is close to a terrorist attack. What's more, the drone itself may be hijacked and used by terrorists.

Summary of the invention

It is conceivable that an aerostat (Aerostat, including tethered balloons, free balloons, and airships) can provide buoyancy to offset all or part of the gravity of the entire device, and at the same time, use the point light source rotating on the outer surface of the aerostat to leave the human eye visually. Low altitude display. The aerostat can be fixed to the ground or suspended from beams and other fixed points by ropes or suspension cables, and then provide power, data or control commands through cables parallel to the ropes or suspension cables to rotate and point the light source. Provide the content that needs to be displayed or the underlying implementation instructions.

However, it should be understood that the content of the present invention may not include all aspects and embodiments of the present invention. The content of the present invention is not meant to be restricted or restricted in any way, and the present invention disclosed herein will be understood by one of the following: The technical staff includes obvious improvements and modifications.

Detailed ways

The present invention will now be described more fully hereinafter. However, the present invention can be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. Hopefully, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

It should be understood that various changes can be made to the function and arrangement of elements without departing from the spirit and scope set forth in the appended claims. Therefore, the embodiments are examples or implementations of the present invention, rather than the only implementations. The various appearances of "one embodiment," "an embodiment," or "some embodiments" do not necessarily all refer to the same embodiment. Although various features of the invention may be described in the context of a single embodiment, the features may also be provided individually or in any suitable combination. Conversely, although the invention may be described herein in the context of separate embodiments for the sake of clarity, the invention may also be implemented in a single embodiment or any combination of embodiments.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of related technologies and the present disclosure, and will not be interpreted as idealized or excessive The formal meaning, unless explicitly defined as such in this article.

Reference terms such as "left", "right", "top", "bottom", "front", and "rear" are intended to be used in the implementation of the present invention in relation to the specific features, structures, or orientations of the depicted embodiments example. Obviously, such directional terms regarding the actual use of the device have no specific meaning, because the device can be used by a user or multiple users in multiple directions.

The embodiments of the present invention are mainly described around helium kites. However, the embodiments of the present invention are not limited to helium-filled aerostats. For example, using hydrogen to provide buoyancy, the helium kite display described below can also be used to realize the function of low-altitude display.

The spherical display drone invented by NTT Docomo, a Japanese telecommunications operator, is difficult to achieve its anticipated goal of high mobility due to the current limitation of the energy density of the power battery. On the other hand, many real-world applications do not require mobility. Of course, if you don’t need to pay a price, high mobility must be of great significance, but the limitations of the existing technology hinder its commercial pace, not only battery life, noise level and flight control, but also anti-wireless attacks and hijacking. Major difficulties.

Since the invention of airplanes, lighter-than-air aircraft (aerostats), such as balloons and airships, have tended to decline. Because the aerostat is lighter than air and its stagnation time is not limited by fuel, it is advantageous in terms of economy and environmental protection. Since its buoyancy does not depend on power, a low-power engine can be used in the propulsion system, which is not only low in cost but also low in noise. It is also very suitable to be combined with solar power to become a fairly environmentally friendly air transportation tool.

But because of the principle that the surface area is enlarged and smaller than the volume, its advantage of being lighter than air, it must be made larger to be effective. The huge volume causes air resistance to be much greater than that of airplanes, and its speed is lower than that of the slowest helicopter among the air-heavier aircraft, usually below 100 kilometers per hour, even the claimed fastest Zeppelin or modern airship. It does not exceed the speed of 150 kilometers per hour. This is even slower than modern land vehicles such as cars or trains, and only slightly faster than ships.

In particular, the aerostat is highly sensitive to wind. Except for maneuvering and docking in high winds, the difference in flight time between headwind and tailwind is too large, and even in crosswinds, the ground speed will be exhausted by flying without sideslip. Therefore, airplanes replaced aerostats and became the preferred means of transportation.

However, for those applications where high maneuverability is not urgently needed and for display purposes, aerostats are more suitable than airplanes. After all, rapid changes will affect the effect of the display, and we all have the experience of watching a short video many times. Secondly, for the display of dense crowds, a huge display surface is also needed. This can just use the principle that the aerostat itself needs to be enlarged according to the surface area to be smaller than the volume, and it needs to be made large to be beneficial. Third, for an unpowered balloon, its shortcoming of high sensitivity to wind can be greatly offset by fixing it to the ground or hanging from a beam by ropes or suspension cables (when possible). Of course, for typhoon weather, the unpowered balloon must be retracted. However, under this weather condition, the flight cannot continue to operate. Even land transportation such as high-speed rail is the same.

Helikite, also known as a kite-style tethered balloon (Kytoon), is a hybrid of kites and balloons, and is sometimes regarded as a kind of kite. It can not only use aerodynamics to fly significantly, but also is an aircraft that can be filled with lighter than air, but on the whole it may not be lighter than air.

When the air moves around the surface of the kite, it will generate lift to support the flying of the kite, resulting in low pressure above the wing/wing and high pressure below the wing/wing. This pressure difference is the lift. The principle is the same as that of an airplane. Fluid deflection, Newton's law, increase in velocity, and Bernoulli's principle are the two most common simplified physical explanations. It’s just that the kite itself has no power and only relies on the air velocity generated by the wind. The plane fin of the kite is not as good as the specially designed, streamlined wing verified by the wind tunnel with high lift coefficient.

We can take advantage of this feature to use the same volume and same inflated aerostat with increased load in airspace with sufficient wind. For example, a larger generator can be used to drive the rotor with a point light source to rotate and generate electricity. The wind is insufficient. At times, the tethered cable is used to provide electricity to drive the generator to become a motor to provide lift to supplement the lack of wind.

Such a rotor needs to be tiltable and can be installed outside the arc edge strip with a point light source embedded in the outer periphery of the aerostat and used for display. When the wind is sufficient, the axis of rotation is closer to the horizontal to have a larger display surface and facilitate power generation. When the wind is insufficient, the tilt is closer to vertical, providing lift to supplement the insufficient wind.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Various changes and modifications according to the claims and specification of the present disclosure are still within the scope of the claimed invention. In addition, each embodiment and claims may not include all the disclosed advantages or special tightening mechanical clamping properties. In addition, the abstract and title are only used to facilitate searching of patent documents and are not intended to limit the scope of the claimed invention in any way.

Claims

A helium kite display, including: multiple point light sources, one or more arc side bars, one or more power devices, one or more wings, one or more airbags and one or more cables, with the following Features: The point light source is embedded in the arc edge strip, the arc edge strip is installed outside the airbag, and the power device can drive the arc edge strip to rotate around the airbag; the airbag internal density is less than The gas in the air to generate buoyancy; the point light source can be turned on or off when rotated to a specific position according to instructions, thereby using the visual residue of the human eye to form an image that needs to be displayed; the wing can use the wind to generate additional lift ; The cable transmits power, and control commands or data needed to display images.
A helium kite display, including: multiple point light sources, one or more arc side bars, one or more power devices, one or more wings, one or more airbags and one or more cables, with the following Feature: The point light source is embedded in the arc edge strip, the arc edge strip is installed outside the airbag, and the power device can drive the arc edge strip to rotate around the airbag; the inner density of the airbag is less than The gas in the air to generate buoyancy; the point light source can be turned on or off when rotated to a specific position according to instructions, thereby using the visual residue of the human eye to form an image that needs to be displayed; the wing can use the wind to generate additional lift ; The cable transmits power, and control commands or data needed to display images.
The helium kite display of claim 2, further comprising one or more rotors, having the following characteristics: the rotor can use wind to drive the arc edge bar to rotate, and the power device to generate electricity; the rotor is embedded In addition, the point light source can be turned on or off when rotated to a specific position according to instructions, so as to use the visual residue of the human eye to form an image that needs to be displayed.
The helium kite display according to claim 2, which has the following characteristics: the rotor shaft can be tilted; when the wind is sufficient, the rotor shaft is tilted to be closer to the horizontal to have a larger display surface; when the wind is insufficient, the rotor is tilted The shaft is tilted to be closer to vertical, and the rotor is driven to rotate by the power device to provide lift to supplement the lack of wind.
A helium kite display, including: multiple point light sources, one or more arc side bars, one or more power devices, one or more wings, one or more airbags and one or more cables, with the following Features: The point light source is embedded in the arc edge strip, the arc edge strip is installed outside the airbag, and the power device can drive the arc edge strip to rotate around the airbag; the airbag internal density is less than The gas in the air to generate buoyancy; the point light source can be turned on or off when rotated to a specific position according to instructions, thereby using the visual residue of the human eye to form an image that needs to be displayed; the wing can use the wind to generate additional lift ; The cable transmits power, and control commands or data needed to display images.
The helium kite display of claim 5, further comprising one or more rotors, having the following characteristics: the rotor can use wind to drive the arc edge bar to rotate, and the power device to generate electricity; the rotor is embedded In addition, the point light source can be turned on or off when rotated to a specific position according to instructions, so as to use the visual residue of the human eye to form an image that needs to be displayed.