WO2016015075A1

WO2016015075A1 - Display device

Info

Publication number: WO2016015075A1
Application number: PCT/AT2015/050180
Authority: WO
Inventors: Mario BERTLWIESER
Original assignee: Fame Technologies Gmbh
Priority date: 2014-07-28
Filing date: 2015-07-27
Publication date: 2016-02-04
Also published as: AT516217A1; AT516217B1; DE112015003469A5

Abstract

The invention relates to a device for representing contents in the air space, in which a large-surface, high-resolution and air-permeable display device is mounted below the hull of a flying object, said display device having a support frame that is fixed to the flying object by means of a linkage or cables. The display device is formed by a plurality of strip-shaped display elements which are fixed to the support frame at a distance to each other.

Description

display device

The invention relates to a display device, in particular for attachment to a flying object, which serves to display content, in particular any kind of information, advertising messages and / or videos.

Known devices for displaying content, in particular advertising content in the airspace exist in the form of advertising banners, or the printing of the outer shell of airships or hot air balloons. Banners have the disadvantage that they have to be moved quickly across the sky and their content is not changeable.

From US 4612720 it is known to attach to a part of the outer shell of an airship, an LED display area, which must be able to flexibly deform with the outer shell of the airship. Airships with such LED display area in high-resolution form for displaying videos are already in use. The disadvantage is that a quick assembly and disassembly of the device is not possible and limited to the outer shell of airships application area.

US 423633 AI shows a display area for a helicopter whose support frame is attached to the landing gear and the fuselage of the helicopter. The display device consists of individual light sources, which are attached to the nodes of a network. Disadvantages are the low resolution or luminance and the large free areas between the bulbs, through which the background light of the sky lights up unhindered. The device is thus suitable for night flight and suitable only for the presentation of coarse not too detailed, essentially monochrome content. Similar devices exist for aircraft. For weight and fluidic reasons, it is not possible to provide a high-resolution, air-permeable display surface with mesh structure. Starting from this prior art, the object of the invention is to provide a display surface that can be mounted on various flying objects, offers more options for displaying content and also achieves a sufficiently high perceptibility during the day, whereby the safe operation of the flying object does not impair may be.

For solving the problem it is proposed to attach a high-resolution, air-permeable display device to the flying object. In particular, it is proposed to equip a flying object, in particular a helicopter with a frame, which has a plurality of rigid strip-shaped display elements, each of these display elements having a row with a plurality of LED bulbs and led the electrical leads for the individual bulbs in the strip-shaped display elements are.

An advantage of this structure is that a larger number of bulbs can be used, since a small distance between two adjacent display elements is sufficient to guide even when used on a helicopter enough downdraft (down wash) of the rotor through the display surface to the flight behavior of the helicopter not to influence.

It is also advantageous that the cabling effort and thus the weight of the device can be reduced by the use of strip-shaped display elements. In addition, individual strip-shaped display elements can be changed quickly.

According to the state of the art, it is known, for example, to provide strip-shaped profile elements with integrated bulbs, which together form a display surface, as shown in US 2007/0097015 A1, the display surface being mounted on a fixed wall, for example in front of a window. The purpose of US 2007/0097015 AI is to provide a display element on a facade, which leaves light in the interior of the building, or does not significantly affect the view from the building. The display area can also be in the form of a blind be educated. For applications on a flying object, in particular a helicopter, the known high-resolution devices are unsuitable due to the extreme requirements, or so far such use was not even remotely considered. The application of a high-resolution display surface to a flying object therefore, regardless of the inventive technical features additionally described herein, already constitutes an action or task which far exceeds the usual action of a person of ordinary skill in the art.

As part of the inventive step, many particularly valuable technical features have been developed which improve the flight behavior of the flying object, in particular helicopters, with display device mounted, and solutions have also been found for other safety-relevant tasks. These are mentioned below, whereby the advantages of the features are illustrated by the example of the helicopter.

The strip-form display elements are preferably aligned in the longitudinal direction of the helicopter in order to minimize the air resistance during forward flight.

The display surface is preferably executed arched around the longitudinal axis of the helicopter. This ensures that the additional buoyancy caused by the display device during forward flight is reduced compared to a flat design.

The cross section of the strip-shaped display elements preferably has a height which is a multiple of the width. As a result, very narrow element can be manufactured with sufficient stability. In particular, in the case of strip-shaped display elements with a matte-black surface, a substantial part of the background light is thus absorbed, so that the display surface has the effect of a collimator with respect to the background light. Particularly preferably, the cross sections of the individual strip-shaped display elements are aligned radially to the curvature of the display device. As a result, on the one hand, it is achieved that the circumferential sections of the profiles facing the rotor sum up do not form a flat surface, whereby the air flow of the rotor is advantageously directed, or swirled. On the other hand, this achieves the result that the opaque area of the display is enlarged from below, or, depending on the viewing direction of the observer, only individual free spaces between the strip-shaped display elements are perceived as bright stripes.

Preferably, the display device is designed inclined in the longitudinal direction of the helicopter, so that the viewed in the direction of flight front end of the display surface is higher than the rear end of the display device, characterized in the forward flight, in which the helicopter is tilted forward, achieved that the display surface in the direction of flight is located so that the air resistance is minimized in the forward flight.

Batteries are preferably mounted on the support frame for power supply, which serve to power the display device, characterized the display area is independent of the power supply of the helicopter used.

Preferably, the strip-shaped display elements are coated with a film, or have a consistently integrated tear-resistant braid, mesh, rope or band, in particular a Kevlar band, which ensures that fall in the event of mechanical damage to the display element, for example by a bird strike, no fragments can. Particularly preferred is the strip-shaped display element is formed of castable plastic, wherein the braid, mesh, rope or tape is included in the plastic mass.

Preferably, at least one tread surface, in particular a perforated plate, mounted on the support frame above the display surface, in order to allow a committing of the display device, inter alia, not to dismount the display device during refueling.

Preferably, the strip-shaped display elements consist of elongated hollow profiles in which the LEDs are mounted, thereby also the leads of the LEDs in a simple manner in the hollow be included in the profile. A hollow design saves additional weight.

Preferably, the hollow profiles are open on one side, which facilitates the insertion of the LEDs and further reduces the weight.

Preferably, the LEDs, or their housing protrude from the hollow sections, whereby a larger radiation angle is achieved.

The strip-shaped display elements preferably have a cross-section whose outer circumference is round, oval or longitudinally oval (rectangular with rounded corners), which ensures that wind or the air flow of the rotor is advantageously steered or the air resistance of the strip-shaped display elements is minimized ,

Preferably, the strip-shaped display elements are mounted on a preferably rectangular frame frame, whose outer periphery is formed by four profile elements, between and parallel to the two transverse to the direction of flight profile elements further profile elements as stiffening elements for the frame, or as support elements for the strip-shaped display elements available are. Preferably, all transverse to the direction of flight profile elements are executed curved. Particularly preferably, the display device is composed of a plurality of such rectangular frame frames which connect to each other transversely to the direction of flight. Particularly preferably, all transverse to the direction of flight profile elements openings for the passage of the strip-shaped display elements, which at least one profile element, preferably on the two outer transverse to the flight direction profile elements, the frame fastened, in particular screwed.

A stiffening of the frame frame against distortion is achieved by the diagonally arranged struts of the linkage with which the frame frame is attached to the helicopter.

The invention is illustrated by a particularly preferred embodiment with reference to drawings: Fig. 1: Shows the particularly preferred display surface of the invention on a helicopter in perspective view.

Fig. 2: Shows the particularly preferred display surface of the invention on a helicopter in bottom, front and side view.

Fig. 3: Shows the particularly preferred display surface according to the invention in a perspective view.

Fig. 4: Shows in a detail of Fig. 3, the attachment of the strip-shaped display elements on the support frame.

Fig. 5: shows the preferred structure of a strip-shaped display element according to the invention.

In Fig. 1 and Fig. 2, the display device 1 according to the invention is shown on a helicopter 2. The display surface 1 is formed curved in the direction of flight straight and transversely to the direction of flight, so that the lateral ends of the display device 1 are higher than the center. As best seen in the side view of Fig. 2, the front end of the display device 1 is higher than the rear end thereof. The front end of the display device lies behind the front doors of the helicopter 2, so that pilot and possibly the copilot when leaving the helicopter 2 are not obstructed by the display surface 1.

As best seen in the front view of FIG. 2, the display device 1 is attached via a linkage 5 to the helicopter 2. The length of the display area 1 is about 4 meters, the width about 8 meters.

In Fig. 3, the display surface 1 is shown in perspective, wherein the landing 2.1 of the helicopter 2 is shown. The landing 2.1 is formed by landing skids, water skids or a fixed landing gear. As shown, the display surface 1 is preferably made up of a plurality of rectangular frame parts 4, whose profile elements 4.1, 4.2 oriented transversely to the direction of flight are bent in their longitudinal direction are. In the direction of flight, the frame parts 4 at least two profile elements 4.3, which extend between two adjacent strip-shaped display elements 3 or above this, so that they are not perceived by the bottom of the image of the display device. Preferably, in the frame parts 4 at each lateral end two parallel spaced profile elements 4.3 are present, whereby the frame 4 is additionally stiffened.

Preferably, the display device 1 on five frame part 4, which can be fastened to each other, in particular screwed to form a complete display device 1 comprehensive frame. The frame is fastened via linkage 5 at a plurality of fastening points of the helicopter 2. Such attachment points for attaching outboard equipment are standard on most helicopters. Preferably, the struts of the linkage 5 are aligned diagonally to the profile elements 4.1, 4.2, 4.3 of the frame members 4 in order to additionally stiffen them against twisting.

The profile elements 4.2 and 4.3 are preferably made of hollow sections whose cross section is round, oval or rectangular with rounded corners. The profile elements 4.1 preferably have an L-shaped cross-section, these being provided after assembly of the strip-shaped display elements 3 with a rounded cover to improve the aerodynamics and to accommodate the connection cable between the data processing system 7 and the strip-shaped display elements 3. The profile elements 4.1 can be as well as the profile elements 4.2 and 4.3 hollow sections to improve their rigidity against twisting.

The rack also preferably two batteries 6 are mounted, and a data processing system 7 for controlling the display device. 1

FIG. 4 shows detail detail x of FIG. 3. In Fig. 4, the cover of the profile element 4.1 is removed and thus the attachment of the strip-shaped display elements 3 can be seen. The profile elements 4.1 and 4.2 have openings for the passage of the strip-shaped display elements 3. Each strip-shaped display element 3 has at each end a closing element 3.7, which closes the end of the strip-shaped display element 3 and has a mounting device for attachment to the profile element 4.1. In those areas in which the strip-shaped display element 3 penetrates the profile elements 4.2, it has cuffs 3.6, which are preferably made of flexible material, on the one hand to achieve a damped mounting of the strip-shaped display element 3 and on the other hand to compensate for manufacturing tolerances of the frame member 4 and To seal the opening in the profile elements 4.2.

On one side of the strip-shaped display element 3, the closing element 3.7 is equipped with a connector via which the wiring to the data processing system 7 and the power supply takes place. The data processing system 7 transmits a digital signal, which is converted by means of driver stages in the strip-shaped display element 3 in state variables of the individual LEDs.

FIG. 5 shows the construction of a particularly preferred display-shaped display element 3. This consists of a hollow profile 3.1, which has a recess in the longitudinal direction. In this recess there is at least one circuit board 3.3, to which a plurality of lamps 3.2, preferably in the form of LEDs, in particular ultra-bright LEDs are mounted. Particularly preferably, the LEDs are mounted along a row on the front side of the board 3.3, since this results in particularly narrow strip-shaped display elements 3. Preferably, the circuit board 3.3 is provided with a bus system and driver stages, which serve to control the LEDs. Particularly preferably, the circuit board 3.3 consists of several segments, which are connected to each other and to the connector of the closing element 3.7 with flexible electrical lines, in particular with ribbon cables. The LEDs are particularly preferred in at least one support bar 3.5 attached. The LEDs can be fixed, for example, positively or by press-fitting or gluing in the support bar 3.5 and so in particular against movement out of the recess of the hollow profile 3.1 out to be secured. The bulbs 3.2 protrude from the recess of the hollow section 3.1. The two legs 3.1.1 and 3.1.2 of the hollow profile 3.1 each have a groove for receiving the support bar 3.5.

The hollow profile 3.1 is surrounded by a film 3.4, wherein the film 3.4 is preferably elastic. The foil 3.4 fulfills several tasks. This serves to press the two legs 3.1.1, 3.1.2 together by tension and thus against the support bar 3.5. As soon as the foil 3.4 has been attached, the legs 3.1.1, 3.1.2 are fixed in their position and the unit of circuit board 3.3, illuminants 3.2 and support bar 3.5 can no longer be moved out of the recess of the hollow profile 3.1 even if a force occurs fall.

The film 3.4 is provided with holes through which the bulbs 3.2 protrude. These holes preferably have a slightly smaller diameter than the housing of the lamps 3.2, whereby the film 3.4 sealingly surrounds the lamps 3.2, so that no dirt and no large amounts of liquid can penetrate into the hollow profile 3.1.

The film 3.4 is particularly preferably so flexible or elastic that with a longitudinal displacement of the lamp 3.2 due to a different thermal expansion of the hollow section 3.1, the board 3.3 and / or the support bar 3.5, the sealing effect at the holes of the film 3.4 is maintained.

The surface of the film 3.4 is particularly preferably made matt black. This minimizes the reflection of light on the illumination or display element, resulting in a better contrast.

Particularly preferably, the film encloses 3.4 the hollow profile 3.1 in its entirety, thereby be at a fraction of the hollow section 3.1 the fragments held together by the film 3.4, so that they can not fall down.

Characterized in that the film 3.4, the two legs 3.1.1, 3.1.2 presses against each other, and thus prevents an opening of this, the hollow section 3.1 can be made very thin-walled and thus easy.

The hollow section 3.1 and the support strip 3.5 are preferably made of PEEK (polyetheretherketone). The hollow section 3.1 and the support bar 3.5 have a wall thickness of 1 mm. The width of the hollow profile 3.1 is 7 mm, the height about 20 mm, the length 4 m. The film 3.4 is a 0.12 mm thick laminate, which is coated on one side with adhesive and the hollow profile 3.1 completely encloses. The bulbs 3.2 are high-performance LEDs, which are attached to a plurality of interconnected with ribbon cables 3.3 boards. The hollow profile 3.1 is closed at both ends by end elements 3.7 made of PEEK or aluminum. A designed in accordance with this dimension strip-shaped display element 3 weighs only 0.637 kg, ie around 160 g / m. The distance between two strip-shaped display elements 3 is preferably between 2 and 5 cm. As shown in FIG. 5, the LEDs are preferably arranged in groups of three consisting of a red, a green and a blue LED for forming color pixels, the distance between two successive groups of three preferably being between 2 and 5 cm. The number of color pixels of the display device is preferably between 10,000 and 300,000. The number of color pixels of the display device along one side is preferably between 80 and 640. Preferably, the aspect ratio of the display surface is 2: 1, 16: 9, 4: 3 or 3: 2, the longer side being preferably arranged transversely to the direction of flight.

The profile elements 4.1, 4.2, 4.3, and the linkage 5 are preferably made of aluminum or an aluminum alloy or carbon fiber reinforced plastic (abbreviated: KFK or CFK, or CFRP - carbon-fiber-reinforced plastic,). It should be pointed to the following applications or generalizations:

Instead of the helicopter, the display device can also be attached to an airplane, a hot air balloon, or an airship. For example, the display device shown in Fig. 3 including the landing 2.1 could be attached to a hot air balloon by the landing 2.1 is attached to the underside of the basket of the balloon and the linkage 5 is attached to the side of the basket. For example, instead of the landing gear 2.1, a fixed landing gear could be present in which wheels are connected via a linkage to the fuselage of the flying object. The display surface is provided in this case between the fuselage of the flying object and the wheels, which is attachable to the linkage of the landing gear and the fuselage of the flying object, such as the fixed landing gear and the cabin or cabin of an airship.

The display device according to the invention in a preferred form can also be mounted freestanding, for example, on a central or two outer supports, the improved aerodynamic properties, the improved air permeability, the low weight and the increased safety against falling parts being essential advantages or novelty , Typical applications include installation in wind-exposed locations, or in hard-to-reach locations or on substructures with limited load-bearing capacity such as roofs of houses, on a land or water vehicle, along roads, on the mast of a wind turbine, in high mountains, on the gondolas of a Cable car or on large flat outdoor areas such as festival grounds.

The power supply of the display surface could also be done via the battery, the alternator, or the generator of the vehicle to which it is mounted. An autonomous energy supply through solar, hydro or wind power would also be conceivable. In stationary systems, the power supply of the display area can also be realized by a connection to the power grid.

Claims

claims

1. A device for displaying content in the air space, characterized in that below the fuselage of a flying object, a large-scale, high-resolution, air-permeable display device (1) is mounted, which has a support frame which is attached via a linkage, or ropes on the flying object, wherein the display device is formed by a plurality of rod-shaped or strip-shaped display elements (3), which are spaced from each other attached to the support frame.

2. Device according to claim 1, characterized in that the longitudinal extension of the rod or strip-shaped display elements (3) in the direction of flight, that is aligned in the longitudinal direction of the fuselage of the flying object.

3. Device according to one of claims 1 to 2, characterized in that the display device (1) is convexly curved along an axis.

4. Apparatus according to claim 3, characterized in that the cross sections of the individual strip-shaped display elements (3) are aligned radially to the curvature of the display device (1).

5. Device according to one of claims 3 and 4, characterized in that the display device (1) is curved around the longitudinal axis of the flying object.

6. Device according to one of claims 1 to 5, characterized in that the flying object is a helicopter (2).

7. The device according to claim 6, characterized in that the display device is designed to be inclined in the longitudinal direction of the helicopter (2), so that viewed in the direction of flight front end of the display device (1) is higher than the rear end of the display device (1).

8. Device according to one of claims 1 to 7, characterized in that on the support frame one or more batteries (6) are mounted, which serve to power the display device (1).

9. Device according to one of claims 1 to 8, characterized in that the rod or strip-shaped display elements (3) with a film (3.4), in particular a laminate are sheathed, or have a consistently integrated tear-resistant tape, braid, net or rope ,

10. Device according to one of claims 1 to 9, characterized in that the height of the strip-shaped display elements (3) is a multiple of its width.

11. Device according to one of claims 1 to 10, characterized in that on the support frame above the display device (1) at least one tread surface is mounted to allow a committing of the display device (1).

12. Device according to one of claims 1 to 11, characterized in that the rod or strip-shaped display elements (3) consist of elongated hollow profiles (3.1) are in which LEDs are mounted.

13. The apparatus according to claim 12, characterized in that the hollow profiles (3.1) are open on one side.

14. The apparatus according to claim 13, characterized in that the hollow profiles (3.1) consist of two parallel spaced legs (3.1.1, 3.1.2), which are connected by a base body.

15. Device according to one of claims 1 to 13, characterized in that the rod or strip-shaped display elements (3) have a cross section whose outer circumference is round, oval or rectangular with rounded corners.

16. Device according to one of claims 1 to 15, characterized in that the frame frame is formed from profile elements, wherein the at an angle of 90 ° to the rod or strip-shaped display elements (3) extending profile elements (4.1, 4.2) have openings through which run the rod or strip-shaped display elements (3).

17. The device according to claim 16, characterized in that extend at an angle of 90 ° to the rod or strip-shaped display elements (3) at least three spaced-apart profile elements (4.1, 4.2), wherein the rod-shaped or luster-shaped display elements on at least one these profile elements (4.1, 4.2) are fastened, in particular screwed, and in the region of the openings of the profile elements (4.1, 4.2), to which they are not fastened, are provided with sleeves (3.6) made of elastic material.

18. Device according to one of claims 16 and 17, characterized in that the struts of the linkage (5), with which the support frame is fastened to the flying object, extend diagonally to the profile elements (4.1, 4.2, 4.3) of the support frame.

19. Use of a device according to claim 4 or 16, characterized in that it is free-standing mounted on at least one stationary support or on a land, air or water craft.

20. The use of the rod or strip-shaped display elements (3) according to claim 9, characterized in that they are mounted on at least one stationary support or on a land or watercraft.