WO2010097220A1

WO2010097220A1 - Signal and energy transmitting support structure

Info

Publication number: WO2010097220A1
Application number: PCT/EP2010/001172
Authority: WO
Inventors: Rüdiger FOX
Original assignee: Pfw Aerospace Ag
Priority date: 2009-02-27
Filing date: 2010-02-25
Publication date: 2010-09-02
Also published as: EP2401196A1; DE102009010706A1

Abstract

The invention relates to a support structure (20), in particular a seat rail for fastening a seat (18) in a passenger aircraft. The support structure (20) is used to receive a connection fitting (68). The support structure (20) comprises a waveguide (60) for transmitting signals and energy.

Description

Signal and energy transmitting carrier structure

State of the art

In aircraft, in particular airplanes for the carriage of passengers, today seat rails are used, which are used to attach the passenger seats according to a seating pattern. On the seat rails, which are arranged below the cabin floor of a passenger cabin of the aircraft, are in individual rows in the various variants such. "Narrow body" with a corridor and "wide body" with several gears to supply the passengers, the passenger seats arranged in pairs in three or four rows next to each other and behind each other. Depending on the class of equipment, First Class, Business Class or Economy Class, depending on the class, the passengers have varying degrees of freedom with regard to the knee room or different entertainment programs, in particular for long-haul flights.

In particular, in long-haul aircraft, entertainment programs to be implemented at the respective passenger seat, such as in-seat videos, headphone jacks, TV channel selection keys, Internet connections, and the like, are becoming increasingly important in terms of convenience. Passengers on a long-haul flight of up to 12 hours and more today have very high expectations of the entertainment program provided on board. Due to the fact that the respective program content has to be transported to each of the passenger seats - in different degrees in relation to First Class, Business Class and Economy Class - it is necessary to present the programs on an in-seat screen, to maintain appropriate data lines.

So far, it is customary to lay separate signal transmission lines to each of the passenger seats to be connected or to be supplied. These can be both data lines, via which, for example, from a central receiving module, the individual programs that are transmitted to the seats after selection by the passenger. These can be TV data lines as well as radio data lines, internet data lines and only the most important ones call. Furthermore, passenger seats that are used in long-haul flights, with respect to a knee part of the backrest and the armrest and possibly other options electrically adjustable, so that the passenger seats have a supply connection for electrical voltage for actuating the servomotors.

This means that in a long-haul passenger aircraft usually several tens of kilometers of cable, be it data lines, be it energy supply lines, are relocated. All of these lines are to be electrically insulated from each other and in particular to lay so that it does not lead to cable fires, cable breaks or other damage, which usually leads to a multi-layer isolation of these signal or data and power supply lines. This, too, has a negative impact on the total weight of the data transmission or signal transmission or power supply lines laid in a long-haul jet.

Presentation of the invention

The invention has for its object to provide a signal and energy transmitting support structure, in particular ^" for a passenger aircraft available, in which the signal transmission and energy transfer takes place directly through the material of the support structure.

A further object underlying the present invention is to provide a carrier structure for an aircraft which manages without separate current or voltage-carrying lines and without separate signal transmission lines to be inserted into the carrier structure or to be fastened thereto.

According to the invention, the object is achieved by providing a support structure, be it a seat rail for the cabin area of an aircraft, or a roller conveyor for the cargo hold area of an aircraft, such as e.g. a cargo plane, is provided with a cavity serving as a waveguide. About the dimensioning of the waveguide delimiting walls, in particular the wall height and the waveguide height and the waveguide width of the frequency range is set within which signals can be transmitted, according to the relationship

with a width of the waveguide in mm. With a width of eg 15.8 mm, a frequency range of 12.4 to 18 GHz can be transmitted, with a measure a of 19.05 mm a frequency range between 10.0 and 15.0 GHz, with a dimension a of 28, 5 mm a frequency range between 7.05 and 10 GHz and at a dimension A of 34.85 mm a frequency range between 5.85 and 8.2 GHz are covered.

In order to ensure a signal transmission through the waveguide, therefore, quite small dimensions, which are in the above-mentioned millimeter range, required, whereas the height b of the waveguide is of the order of about half of the above enumerated width a of the waveguide. In terms of the design of the support structure, this means that the waveguide has a rather small cross-section of a few square centimeters, which is used for signal transmission, and thus can be integrated into a support structure, without affecting their mechanical stability and their rigidity.

The inventively proposed support structure, in particular seat rails, thus serve for signal and power transmission to the respective seats in the passenger cabin of an aircraft, wherein the waveguide described above can be integrated into the support structure, in particular when the seat rail made with the cavity by means of the extrusion process becomes. In addition, the support structure proposed according to the invention, in particular a seat rail, may have an additionally mounted waveguide which represents a separate component and which can be used for signal or energy transmission.

If a digitally operating modulation method is used for coupling the data signals, a modulating of different channels onto a carrier frequency can take place. As a result, a secure transmission of the data packets is guaranteed, so that there is interference immunity. In terms of modulating different channels to a carrier frequency proven and proven standard applications can be used.

By means of a specially designed connection fitting, on the one hand, the mechanical fastening of the passenger seat to the support structure, in particular of the seat rail, is ensured and, on the other hand, a transmission point for signals from the waveguide, which either runs on the support structure or is part of the support structure, is created. The connection fitting is formed according to the screening at the top of the support structure, so that variable seat intervals can be created in a passenger cabin of a commercial aircraft. The proposed solution according to the invention also allows variable to be positioned Auskopplungsstellungen, ie Seat exits for the data signals to be assigned to each passenger seat and to be transmitted to them, for the individual seat-dependent different multimedia application.

Thus, e.g. a shielded cable section protruding from the body of the connection fitting with a hook-shaped projection or a lance-shaped projection or opening into the free cavity of the waveguide and depending on the coupling-out frequency signals intended for that passenger seat, i. Disconnect frequency ranges from the waveguide. In this way, it is possible to ensure that the data signals requested there and that support the respective multimedia applications arrive at each of the passenger seats, and that no data or signal superimposition occurs.

The connection fitting takes over the decoupling of the signals from the waveguide and an electrical contact with the support structure. This is generally made of aluminum or aluminum alloys, on the one hand have a low weight and on the other hand ensure a very high mechanical stability. Through unpainted or uncoated areas on the connection fitting and on the support structure, current or voltage may be coupled out to power electrical actuators for actuation of the seat mechanism, as well as for the supply voltages and multimedia applications, e.g. of the in-seat screen. The transmission of energy for the operation of reading lamps for illumination of displays or illumination of switch symbols can be represented in this way.

In an advantageous embodiment variant, the connection fitting can have a bolt eye in which a corresponding bolt of the passenger seat or several bolts protrude, so that the passenger seat is mechanically stably coupled via the fitting to the support structure on or in which the waveguide extends. The connection fitting may, in particular, have a clamping bolt and a shear bolt, which can be fastened in a corresponding manner in the corresponding grid on the upper side of the signal and energy-transmitting support structure. In a particularly space-saving design, a signal converter can be present between the connection fitting and the waveguide, which filters the signals coupled out of the waveguide, amplifies them and adapts them for further processing to the entertainment-specific applications which are currently in operation. According to the selected digital modulation method, different channels can be modulated onto a carrier frequency, so that a secure Transmission of data packets to the respective passenger seats is guaranteed and a high interference safety against mutual overlay is guaranteed.

Brief description of the drawings

In the appended drawings, the invention will be described in more detail below.

It shows:

Figure 1 shows a fuselage cross section through a passenger plane according to the prior

Technology,

FIG. 2 shows an enlarged view of a seat rail profile currently in use,

FIG. 3 shows a side view of a schematically represented passenger seat with space requirement,

FIG. 4 shows a currently used connection fitting,

FIG. 5 shows a cross section through the passenger cabin of a passenger aircraft with the signal and energy-transmitting carrier structure proposed according to the invention,

FIG. 6 shows an enlarged view of the support structure proposed according to the invention, designed here as a seat rail,

Figure 7 shows a reproduction of connection fitting and its coupling with the signal and energy transmitting support structure, designed here as a seat rail and

Figure 8 is a circuit diagram of input and output of data in the waveguide and their distribution.

The invention will be described below with reference to the drawings. The term support structure is understood below to mean both a passenger seat in a passenger cabin supporting seat rail and a support structure, in particular a roller conveyor, as used for example in the cargo holds of cargo aircraft. Such support structures are usually made of aluminum or aluminum alloys and can, for example, in a particularly cost-effective Production method can be produced as extruded profiles. In addition, other embodiments are possible to manufacture the support structures proposed according to the invention as one-piece components or as two separately manufactured components to be joined together.

The illustration according to FIG. 1 shows schematically a cross-section through the passenger cabin of an aircraft with conventional seat rails.

The illustration according to FIG. 1 shows that a hull 10 of a passenger cabin 12 has a cabin floor 14. Below the cabin floor 14 there are mutually parallel seat rails 20. On these seats 18 are fixed, wherein in the illustration of FIG is a so-called. "Wide body" arrangement, in which between groups of seats 18 two mutually parallel passages 24 run between them for the operation and supply of the passengers Below the cabin floor 14 is a cargo space 16. In the cabin floor 14 are the

Seat rails 20, where the seats 18 are fixed to recognize.

In the illustration according to FIG. 2, a profile of a seat rail according to the representation in FIG. 1 is shown on an enlarged scale.

From the illustration according to FIG. 2, it can be seen that the seat rail 20 comprises a plateau 32 provided with a profiling 22. The plateau 32 extends substantially in the horizontal direction. A slender neck 30 extends between the platform 32 and a foot 26 of the seat rail 20 as shown in FIG. 2. As can also be seen from the illustration according to FIG. 2, the profiling 22 is designed such that it essentially lies in the plane of the drawing extends and in alternating order with respect to each other in undercuts 28 which are separated by circular openings.

The illustration according to FIG. 3 schematically shows a seat 18, as is generally used in passenger aircraft, in particular long-haul jets, although in a simplified, highly schematic representation.

The seat 18 as shown in FIG. 3 comprises a seat surface 38 from which a backrest 36 extends at an angle of substantially 90 °. Armrests 34 are arranged on both sides of the backrest 36. Below the seat 18 is a frame 48, which has at least one attachment point 46 for the mechanical connection of the seat 18 to a seat rail 20 as shown in Figure 1 or 2. From the illustration according to FIG. 3 it can be seen that the seat surface 38 of the seat 18 is in 1 a seat height 50 above the connection point 46 is located on the seat rail 20. By not shown in Figure 3 electric drive or by manual operation, the backrest 36 can be converted from the upright position shown in solid lines in a dashed position, the backrest 36 is pivoted by an inclination angle 40 to the rear. This results in an increased space requirement for the seat 18, indicated by the distance 42.1. The maximum distance which exists between the front edges of the seat surfaces 38 between two consecutive seats is indicated by reference numeral 42.

Figure 4 shows a schematic representation of a connection point 46 between a seat and a seat rail, as is commonly used according to the prior art. The connection 46 comprises a clamping bolt 54 as well as a shear bolt 82 and an eye 52 for securing the seat 18 to the frame 46 (see position 46 in FIG.

The connections for passenger seats shown in Figure 4 represent standardized components which are formed according to the opening department in the profile rail 22 as shown in Figure 2 and a locking of the seat 18 (see illustration of Figure 3) at any intervals 42 of seat 18 to 18 seat one behind the other. With these components according to FIG. 4, special seating grids can be realized both for Economy Class, Business Class and First Class in passenger aircraft, in particular in long-haul aircraft.

FIG. 5 shows a cross section through the fuselage of a passenger aircraft, in particular the passenger cabin, in which support structures proposed according to the invention are integrated into the cabin floor 14. As already mentioned, the support structures proposed according to the invention can be both seat rails

20 act for attachment of the passenger seats 18, and - this applies to freight vehicles - roller conveyors to which transported in the cargo compartment 16 of the cargo container in their transport position locked by locking elements and thus secured during transport.

5 shows that, analogously to the illustration according to FIG. 1, a "wide body" arrangement is shown in which the individual seats 18 in the passenger cabin 12 are separated from one another by two passages 24. In contrast to the representation according to FIG 6 according to the variant in Figure 5. These are, for example, as shown in Figure 6, seat rails on which the passenger seats 18 of the passenger cabin 12 are received according to the seating pattern Seat rails according to FIG. 2 are the carrier structures proposed according to the invention, which may be both seat rails and roller conveyors, not shown here, for use in cargo holds in cargo aircraft, provided with a waveguide 60, which transmits data without further additional measures Signals and as a transmitter of current and voltage, ie energy can be used universally. Of the mechanical stability, the support structure proposed according to the invention differs according to the sectional view in Figure 6 only insignificantly from the seat rail, as shown in connection with Figure 2 and described there. In particular, the support structures 20 are made of aluminum or aluminum alloys.

As can also be seen from the sectional view according to FIG. 6, the waveguide 60 is rectangular in this embodiment. In contrast to the representation according to FIG. 6, the waveguide 60 can also be arranged edgewise. A first side 62 defines a cavity 66 as well as two opposing second sides 64. A dimension 104, which denotes the width of the first side 62, exceeds a dimension 106, i. the height of the second sides 106 of the waveguide 60. In the embodiment of Figure 6, the waveguide 60 is shown as an integrated into the support structure 20 component. This can be made in the production of the support structure 20 made of aluminum or an aluminum alloy in the extrusion process. As an alternative to the embodiment shown in FIG. 6, the hollow conductor 60 can be joined as an additional, separate component to the support structure 18 in one operation, i. The support structure 20 may also be formed in several parts.

For sizing the waveguide 60 with respect to the dimensions 104 and 106 with respect to the first sides 62 and the second sides 64 delimiting the cavity 66, it is to be understood that the ratio of the dimensions 104 to 106 determine the frequency range provided by the correspondingly sized one Waveguide 60 can be worn. The dimension 104 of the first side 62 is advantageously equal to the dimension 106 of the second sides 106 in a ratio of 1: 2 or 2: 1, for example. If, for example, the dimension 104 of the first side 62 is 34.85 mm, then a correspondingly configured waveguide 60 is suitable for transmitting a frequency range between 5.85 and 8.2 GHz. On the other hand, if the dimension 104 of the first side 62 is 28.5 mm, then this is advantageous for transmitting a frequency range between 7.05 GHz and 10 GHz. With a dimension of 104 to 9.05 mm, a larger frequency range, namely between 10.0 and 15.0 GHz, can be transmitted, while with a further reduction of the dimension 106 to 15.8 mm, a frequency range between 12.4 GHz and 18 GHz can be covered. This means that the support structure 20 proposed according to the invention can be manufactured with high precision to manufacture the dimensions mentioned in the above context exactly. This is associated with a highly accurate production of the support structure 20, as explained above in connection with the dimension 104, applies to the total length of the inventive proposed support structure 20. As a result, an accurate assignment of the signals to that of the seats 18 can be achieved, which has also requested the signals in an advantageous manner. By a digital modulation method transported in the waveguide 60 data signals can be transmitted to a plurality of n _x multimedia applications 94, wherein the transmission at the individual coupling-out points 98 is completed. The signals are coupled out of the waveguide 60 at the extraction points 98 (see illustration according to FIG. It should be noted that the waveguide 60, be it as shown in Figure 5, integrated into the support structure 20, preferably has a rectangular cross-section as apparent from the geometry of the cavity 66 as shown in Figure 5.

This embodiment allows the required rigidity to accommodate seats 18 in the passenger cabin 12 of a commercial aircraft with the required mechanical safety. With regard to the extraction point 98 for the data signals from the waveguide 60, this may be provided by a protruding into the waveguide customer 76 or by an exposed opening. Furthermore, it is possible to fill the data signal and voltage output point 98 with an electrically nonconductive material. The data signals or electrical voltage can also be decoupled from the waveguide 60 at such a coupling-out point. In a particularly advantageous embodiment of the solution proposed according to the invention, the waveguide serves both for the data signals to be transmitted in it as well as for electrical voltage to be transmitted simultaneously as a way to go and return for the data signals.

In the immediate vicinity of the waveguide runs the power and power supply of seats 18 for passengers and multimedia applications 94 so that 8 8 individualized data signals and a certain electrical voltage can be removed for this output point 98 ie for this seat. The waveguide 60, ie the support structure 20 transmits data signals only in the intact state. This means that when interrupting the waveguide 60 or opening the waveguide or a mechanical failure such as a break, the data transmission or the transmission of electrical energy is interrupted immediately. In an advantageous embodiment of the invention underlying idea, the interior of the waveguide 60 of the support structure 20 is filled with inert gas or continuously or intermittently purged with inert gas filling or purging the interior of the waveguide 60 with inert gas or oxygen-poor air is low in terms of Dehumidification of the cavity 66, of the Waveguide 60 is enclosed. On the one hand, this prevents corrosion and, on the other hand, drastically reduces the risk of electrical breakdown. The moister the air inside the waveguide 60, the greater the risk of sagging, which is consequently reduced by filling the cavity 66 of the waveguide 60 with inert gas or with oxygen-poor air. By filling or purging with inert gas, an improvement of the function of the waveguide 60 and a change in the corrosion can be achieved. Corrosion phenomena should therefore be avoided, as a poor surface of the waveguide 60 reduces the conductivity, which leads to a high attenuation of the signal and in turn can result in energy loss.

In a further advantageous embodiment of the idea underlying the invention, the interior of the waveguide 60 may also be filled with warm, oxygen-depleted air or with ambient air. In addition, it is possible to continuously or intermittently flush the interior of the waveguide 60 with warm oxygen-poor air or with ambient air, similar to the case in the embodiment with inert gas briefly outlined above.

The representation according to FIG. 7 shows that the connection fitting 68 is inserted from the top side into the signal and energy transmitting support structure 20 designed as a seat rail. The connection fitting 68 comprises a seat attachment 70 with which the seat 18 to be fastened can be fastened to the connection fitting 68 at an attachment point 46, which can be designed as an eye or the like. The connection fitting 68, in turn, includes e.g. Shear pin 82 and a tightening pin 54. The tightening pin 54 comprises e.g. Clamping vanes 56 which, when the tensioning bolts 54 are rotated, enter the profiling 22 into the undercut 28 (see illustration according to FIG. Since the undercut 28 is covered by an overlap 72 of the profiling 22, results in a corresponding operation of the clamping bolt 54 is a clamping of the clamping bolt 54 with its clamping wings 56 below the seat rail cover 72, as shown in Figure 7. When driving under the seat rail cover 72 by the clamping bolt 54 radially projecting clamping wings 56, the shear pins 82 are retracted into openings 84 of the profiling 22 of the signal and energy transmitting support structure 20, so that a releasable mechanically but extremely stable attachment between the seat 18 and the signal and current-transmitting carrier structure 20 as shown in FIG. 7.

From the illustration according to FIG. 7, it is also apparent that a signal converter 74 is accommodated between the underside of the connection fitting 68 and the waveguide 60, which is shown in the side view in FIG. About this can from the Waveguide 60 decoupled signals are filtered, or converted into electrical signals and transmitted to the respective right receiver, without colliding with other signals or data packets.

From the illustration according to FIG. 7, it can also be seen that the shear pins 82 are received in a grid on the underside of the connection fitting 68, which is identical to the grid with which the openings 84 are arranged in the profiling 22 on the upper side of the support structure 20 are. Between each two openings 84 and the profiling 22 is a portion which, as shown in the illustration of Figure 7, a portion of the undercut 28, which is surmounted by a Sitzschienenüberdeckungsabschnitt 72.

The illustration according to FIG. 7 shows that a coupling-out point 98, at which the signals are coupled out of the waveguide 60, can be represented, for example, by a plug 76 with a shielded cable. The plug 76 is inserted into a correspondingly shaped opening on top of the waveguide 60 and contacts a pickup 78, e.g. can be hook-shaped, as shown in detail in FIG 7. Via this extraction point 98, the frequency signals transmitted in the cavity 66 of the waveguide 60 can be decoupled from the cavity 66, which is in each case delimited by two side walls 64 and walls 62 and is rectangular in the illustration according to FIG.

By means of the extraction point 98, signals or data from the waveguide 60 can be fed to each seat 18 of each of the connection fittings 68 shown in FIG.

Figure 8 shows a block diagram showing the output point or the point of injection of data, signals or energy in the form of current or voltage.

From the illustration according to FIG. 8, it can be seen that signals are applied to the waveguide 60 or its cavity 66, which is assigned to the signal- and energy-transmitting carrier structure 20, at an input 90. At a decoupling point 98 arranged directly behind the input 90, the frequency signals are fed via a single chip 92 to a multimedia application 94, which is currently active at the respective connected seat 18. A return channel 96 extends parallel to the waveguide 60 and receives signals from the respectively activated multimedia application 94 via a bus system indicated by reference numeral 102. At the respective extraction points 98, in connection with the bus system 102, the individual data signals intended for the respective seat 18 and the multimedia application 94 applied there are coupled out of the waveguide 60. Numeral 100 describes a digital modulation device that allows different channels to be modulated to a carrier frequency to ensure secure transmission of the data packets to the respective individual seat 18 in the passenger cabin 12 of the airliner. It can be ensured via the digital modulation device 100 that the data packets transmitted via the waveguide 60 are unerringly transported to the respective seat 18 without interference and are transmitted to the active multimedia application 94 at the correct extraction point 98. The multimedia applications 94 according to the block diagram in FIG. 8 may, for example, be programs running on an in-seat screen, TV programs, films or games or the like. In the block diagram representation according to FIG. 8, multimedia applications 94 are also indicated in which, for example, a CD or another sound carrier can be individually started and played back by the multimedia application 94. Commands, such as a request to the cabin crew, can be via the bidirectional bus 102 from the respective seat 18 after actuation by the passenger on the return channel 96 give, for example, leads to the pantry or to a residence area of the cabin crew.

In addition to the above-outlined transmission of signals through the waveguide 30, this can also be used in the development of the proposed solution according to the invention for the transmission of energy. For this purpose, for example, at the respective point at which the connecting fitting 68 is releasably connected via the clamping bolt 54 and the shear pin 82 with the profiling 22 of the support structure 20, voltage on non-painted or non-coated contact points are transmitted, so that the support structure 20 with integrated waveguide 60 or separately attached waveguide 60 for supplying power to electrical drives so eg for adjusting the backrest 36 of the seat 38 and the like is connected.

LIST OF REFERENCE NUMBERS

10 hull

12 passenger cabin

14 cabin floor

16 cargo space

18 seat

20 seat rail

22 profiling

24 gear

26 feet

28 undercut

30 neck

32 plateau

34 armrest

36 backrest

38 seat area

40 tilt angle

42 distance

44 Maximum inclination

44.1 Maximum distance

46 connection point

48 seat frame

50 seat height

52 eye for seat attachment

54 clamping bolts

56 tension wings

58 S crossbars

60 waveguide

62 1st page

64 2nd page

66 cavity

68 connection fitting

70 seat attachment

72 seat rail cover

74 signal converter

76 Plug with shielded cable

78 signal collectors 82 shear bolts

84 Opening for shear bolt

90 signal input

92 single chip

94 multimedia application

96 return channel

98 extraction point

100 digital modulation device

102 Bus system Signal exchange

104 Dimension 1. page 62

106 Dimension 2. page 64

Claims

claims

1. support structure (20), in particular seat rail for fastening a seat (18) in a commercial aircraft, with a profiling (22) for receiving a

Connection fitting (68), characterized in that the support structure (20) transmits signals and energy.

Second support structure (20) according to claim 1, characterized in that the support structure (20) comprises a waveguide (60) for transmitting signals and energy.

3. support structure (20) according to claim 1, characterized in that it is a seat rail.

4. support structure (20) according to claim 1, characterized in that it is a roller conveyor of a cargo hold.

5. support structure (20) according to claim 2, characterized in that the waveguide (60) in the support structure (20) is integrated.

6. carrier structure (20) according to claim 2, characterized in that the waveguide (60) is additionally attached as a separate component to the support structure (20).

A support structure (20) according to claim 2, characterized in that the waveguide (60) comprises a cavity (66) delimited by first sides (62) and second sides (64).

A support structure (20) according to claim 7, characterized in that a measure (104) of the first sides (62) to a dimension (106) of the second sides (64) in one

Ratio 1: 2 or 2: 1 stands.

9. support structure (20) according to claim 7, characterized in that the larger of the dimensions (104), (106) 34.85 mm, 28.5 mm, 22.86 mm or 19 _? O5mm is.

10. support structure (20) according to claim 1, characterized in that between the seat (18) and the support structure (20) a signal converter (74) is arranged.

1 1. A support structure (20) according to claim 1, characterized in that a decoupling point (98) of the data signals from the waveguide (60) by a in the cavity (66) of the waveguide (60) protruding customer (76) or by an exposed Opening, or by one with an electrically non-conductive material

5 filled opening, is given.

12. A support structure (20) according to claim 1, characterized in that the Verbindungsfϊtting (68) shear pins (82) which engage in openings (84) of the profiling (22) of the support structure (20). lu

13, support structure (20) according to claim 2, characterized in that the waveguide (60) for the signals or the energy is simultaneously a forward and return line to the respective extraction point (98).

14 14. carrier structure (20) according to claim 2, characterized in that in the immediate vicinity of the waveguide (60), the power / power supply of seats (18) and multimedia applications (94) extends, so that data signals and electrical voltage to one and abut the same extraction point (98).

15. The support structure according to claim 2, wherein a device for digitally modulating the signals is assigned to the waveguide for modulating frequency, sequence of data packets to a number n _x of multimedia applications. ,

25 16. carrier structure (20) according to claim 2, characterized in that the waveguide (60) is associated with a Auskopplungsstelle (98) for a single chip (92) for driving a multimedia application (94).

17 carrier structure (20) according to any one of the preceding claims, characterized 30 characterized in that the signal transmission through the waveguide (60) is interrupted as soon as the waveguide (60) is opened or interrupted.

18. Carrier structure (20) according to one of the preceding claims, characterized in that the waveguide (60) is filled with inert gas, and / or with

35 inert gas is purged continuously or intermittently.

19, support structure (20) according to one of the preceding claims, characterized in that the waveguide (60) with warm oxygen-poor air or with Ambient air is filled and / or rinsed with warm oxygen-poor air or with ambient air continuously or intermittently.