PASSENGER RAIL VEHICLE

Description

Technical field

[0001] The invention relates to a passenger rail vehicle with a radio wave emitting device in the passenger compartment and a compartment separated from the passenger compartment. State of the art

[0002] Rail passenger satisfaction is increasingly determined by the availability of internet access. Virtually all passengers own mobile devices and expect wireless reception even during a train journey. To receive mobile phone networks, vehicle windows, which are usually metal-coated, can be equipped with a structure that is permeable to high-frequency electromagnetic radiation in the required frequency range. European patent EP 3326235 B1 discloses such a structure. Some railway operators also offer their passengers access via a so-called wireless network (WLAN), whereby a radio modem installed on the vehicle establishes a connection to a mobile phone network and offers it to passengers as WLAN via wireless access points (WLAN access points) located in the passenger compartment.This can also provide passengers with specific information that is not available online, such as the current timetable or the timetable of connecting services and any delays. Radio wave propagation is problem-free in today's open-plan carriages, but this is not guaranteed in modern compartment cars or sleeping cars. In particular, the increased fire protection requirements, which necessitate the provision of metal partitions in compartments, as known from CN 206 493 947 U, for example, make radio reception from a WLAN access point located in the vehicle more difficult. A solution to this problem could be to significantly increase the number of WLAN access points or to use so-called radiator or slotted cables. However, an increased number of WLAN access points is expensive and often difficult to implement due to the space required, while slotted cables are complicated to install.There is no known way of ensuring that radio reception, in particular WLAN radio reception, continues to provide fire protection in shielded areas without having to accept the disadvantages described. Description of the invention

[0003] The invention is therefore based on the object of providing a passenger rail vehicle with a radio wave emitting device in the passenger compartment, in which radio reception can be ensured in a further compartment separated from the passenger compartment by metallic walls. This object is achieved by a passenger rail vehicle with a radio wave emitting device in the passenger compartment having the features of claim 1. Advantageous embodiments are the subject of subordinate claims.

[0004] According to the basic idea of the invention, a passenger rail vehicle is described, comprising at least one radiation device for radio waves and at least one further space which is separated from the interior of the passenger rail vehicle and is designed for the stay of passengers, wherein this further space is delimited in the direction of the interior of the passenger rail vehicle by walls with a metal layer, wherein in these walls delimiting the further space at least one recess is arranged which is filled with material permeable to radio waves.

[0005] This provides the advantage of being able to produce a passenger rail vehicle with an interior fitting suitable for compartment cars, couchette cars, sleeping cars, etc., while at the same time ensuring a high level of fire protection and satisfactory radio reception for the passengers.

[0006] According to the invention, a passenger rail vehicle is equipped with a radio wave emitting device that emits radio waves into the interior of the passenger rail vehicle and that comprises at least one further space separated from the interior, which, like the rest of the interior, is available for passengers to stay in. The radio wave emitting device can be designed as a conventional access device for a wireless computer network. The further spaces separated from the interior are separated from the rest of the interior by metal walls to meet fire protection requirements. Typically, pure metal walls are not used for this purpose, but rather sandwich materials with at least one metal layer.In this way, good damping of sound transmission through the wall can be achieved and it is possible to provide the surfaces of the wall with visually appealing coatings, for example a representation of a wooden surface.

[0007] According to the present invention, at least one recess is to be made in this wall and filled with material permeable to radio waves. These recesses are to be determined according to the frequency of the radio waves to be transmitted, with one dimension of the recess being at least half the wavelength of the radio waves to be transmitted.

[0008] It is advantageous to design the recesses in a rectangular shape, with one side of the recess being larger than half the wavelength of a radio wave that is preferably transmitted. The wavelength of the common 2.4 GHz band of wireless computer networks is approximately 13 cm, so the recesses must be dimensioned accordingly. These small dimensions, relative to the dimensions of the other rooms separated from the interior, therefore represent only a slight weakening of the fire resistance of the walls surrounding these rooms.

[0009] This makes it possible to provide multiple such recesses, if necessary. For example, it is possible to provide two orthogonally arranged recesses for different polarization planes of the radio waves to be transmitted. It is particularly advantageous to design the recesses square, so that two mutually orthogonal polarization directions of a single wavelength are equally well transmitted.

[0010] The walls defining the remaining space should preferably be constructed of multi-layered material with at least one metal layer. Such materials offer sufficient strength, as well as good fire protection and soundproofing properties. The latter would not be adequately achieved with purely metal walls, for example.

[0011] It is advantageous to construct the walls defining the remaining space as a multi-layer material with a core layer of wood and two cover layers of an aluminum alloy, each of which is provided with a decorative layer. This type of wall construction is both fire-resistant and lightweight, making it particularly suitable for constructing partition walls inside a rail vehicle. The decorative layers allow for extensive visual design options and can be made of high-pressure laminate.

[0012] If higher strength requirements must be met, it is advantageous to construct the walls defining the rest of the room as a multi-layered material with a core layer of aluminum honeycomb and two cover layers of an aluminum alloy. A layered material constructed in this way can also be equipped with decorative layers.

[0013] The recesses in the walls defining the further space can be produced in various ways. According to one embodiment, the recesses in the multilayer material are formed by H enclosed in a metallic frame. Another preferred method for producing the recesses in the walls defining the further space can be achieved by using polymethacrylimide as a filler material for the cavities. Brief description of the drawings

[0014] Examples include: Fig.1 Rail vehicle with separate compartment. Fig.2 Wall with recess in metallic covering layer. Fig.3 Wall with continuous recess. Fig.4 Wall with continuous recess and frame. Fig.5 Wall with continuous recess and frame, view. Implementation of the invention

[0015] Fig.1shows, by way of example and schematically, a rail vehicle with a separate space inside the passenger compartment. It shows a highly abstract floor plan of a passenger compartment of a passenger rail vehicle 1 in which a space 3 is separated from the rest of the passenger compartment. This separate space 3 can be designed, for example, as a sleeping car compartment, disabled person's compartment, staff compartment, couchette compartment, or similar and is bordered by a wall 4. This wall 4 has a metallic layer which, on the one hand, increases the strength of the wall and improves fire protection, and on the other hand, this metallic layer blocks the radio waves emitted by a radiation device (2). This radiation device 2 is typically designed as an access point for a wireless network with the frequencies approved for it, but can also be any other radio system, for example an access point for a mobile radio network.A recess 5 is made in the wall 4, which is filled with material permeable to radio waves, so that the fire protection and the sound transmission through the wall 4 are only slightly impaired, but the separated room 3 can be supplied with radio waves through this recess 5.

[0016] Fig.2shows, by way of example and schematically, a wall with a recess in the metallic cover layers. A section through a wall 4 at the location of the recess 5 is shown, wherein the wall 4 is constructed as a layered material with a core layer 7 and two metallic layers 8 adjacent to the core layer 7. The visible surfaces of the wall 4 are provided on both sides with a decorative layer 9. In order to create a passage for radio waves, the metallic layers on both opposite sides in the area of the recess 5 are removed and filled with a filler material 10 that is permeable to radio waves. In the exemplary embodiment shown, the decorative layers 9 were applied after the metallic layers 8 were removed and filled, so that the wall 4 has a continuous, undisturbed surface and the recess is not visually detectable.

[0017] Fig.3shows, by way of example and schematically, a wall with a continuous recess. According to this embodiment of the wall 4, the recess 5 is designed as a bore through the metallic layers 8 and the core layer 7.

[0018] This is particularly necessary for walls with a metallic core layer, such as aluminum honeycomb. The resulting cavity is filled with a radio-transparent filler material 10, and a decorative layer is applied to each side.

[0019] Fig.4shows, by way of example and schematically, a wall with a continuous recess and a frame. In this embodiment, the area permeable to radio waves, the recess 5, is designed as a filling material 10 enclosed in a frame 6. The frame 6 is constructed from aluminum profiles and, together with the filling material 10, is inserted into the wall 4, which is provided on both sides with a decorative layer 9. It is also possible to design the frame filled with a filling material 10, optionally with decorative layers 9, as a separate component and to install it in the wall 4, wherein it is particularly advantageous to provide the frame 6 so that it can be moved relative to the wall 4 by means of a pivoting hinge, so that the area of the wall 4 permeable to radio waves can perform another function, for example a door or flap.

[0020] Fig.5shows an exemplary and schematic view of a wall with a continuous recess and a frame. It is the embodiment from Fig.4 shown, whereby the arrangement and design of the frame 6 filled with filling material 10 can be seen. List of designations

[0021] 1Passenger rail vehicle 2Radio wave emitting device 3Separated space 4Wall 5Recess 6Frame 7Core layer 8Metallic layer 9Decorative layer 10Filling material

Claims

1. Passenger rail vehicle (1), comprising at least one radiation facility (2) for radio waves and at least one additional space (3) which is separate from the interior space of the passenger rail vehicle and is configured for accommodating passengers, wherein this additional space (3) is delimited in the direction of the interior space of the passenger rail vehicle by walls (4) with a metal layer (8), characterised in that at least one recess (5) is arranged in these walls (4) which delimit the additional space, which recess is filled with material which is permeable to radio waves.

2. Passenger rail vehicle (1) according to claim 1, characterised in that the recesses (5) are embodied as rectangles, wherein one side of the recess (5) is dimensioned larger than half the wavelength of a radio wave which is preferably to pass through.

3. Passenger rail vehicle (1) according to claim 1 or 2, characterised in that the walls (4) which delimit the additional space are embodied as multi-layered laminate material with at least one metal layer.

4. Passenger rail vehicle (1) according to claim 3, characterised in that the recesses (5) in the multi-layer laminate material are in an H accommodated in a metallic frame (6).

5. Passenger rail vehicle (1) according to claim 3, characterised in that the recesses are formed by removing at least one metal layer (8) in a specific area and the cavities generated by this means are filled with material (10) which is permeable to radio waves.

6. Passenger rail vehicle (1) according to claim 3, characterised in that the recesses are formed as through-holes through the multi-layer laminate material with at least one metal layer (8), wherein these through-holes are filled with material (10) which is permeable to radio waves.

7. Passenger rail vehicle (1) according to one of claims 3 to 6, characterised in that the walls (4) which delimit the additional space are formed as multi-layer laminate material with a core layer made of wood and two cover layers made of an aluminium alloy, wherein the cover layers are each provided with a decorative layer.

8. Passenger rail vehicle (1) according to one of claims 3 to 6, characterised in that the walls (4) which delimit the additional space are formed as multi-layer laminate material with a core layer made of aluminium honeycomb and two cover layers made of an aluminium alloy.