Door device of a rail vehicle with visualization device and rail vehicle with the door device

Abstract

The invention relates to a door device (100) of a rail vehicle designed to transport passengers, comprising at least the following: at least one movable door (1) with at least one window pane (2), wherein the door (1) is designed and configured to allow passengers to board and disembark, and a visualization device (3) designed and configured to display variable visual information for the passengers, and comprising the following: an electronic controller (7) designed and configured to generate at least one electrical potential (U1, U2; U2a, U2b, U2c...U2n), a first region (4) of the window pane (2), the first transparency (T1) of which can be reversibly changed by the electrical potential (U1), and at least one second region (5; 5a, 5b, 5c...5n) of the window pane (2), the second transparency (T2; T2a, T2b, T2c...T2n) can be reversibly changed by the electrical potential (U2; U2a, U2b, U2c..U2n) depending on or independently of the first transparency (T1).

Description

[0001] The invention is based on a door device of a rail vehicle designed to transport passengers, which comprises at least one movable door with at least one window pane, wherein the door is designed and configured to enable passengers to board and alight, as well as a visualization device designed and configured to visualize changeable visual information for the passengers, according to the preamble of claim 1, and on a rail vehicle designed to transport passengers, which comprises at least one door device, according to claim 15.

[0002] A generic door device and a generic rail vehicle are known from DE 10 2014 214 585 A1. This discloses a rail vehicle with a door device, comprising at least one movable door leaf with a window pane on which a display device for displaying variable visual information is arranged. The known display device has a separating layer with variable light transmittance between two displays, so that when information is presented on one of the two displays, for example one facing outwards with respect to the rail vehicle, the transparency of the separating layer is reduced to enable different information to be presented simultaneously on the other display, for example one facing inwards. Smart glass or electrochromic glass is used as the separating layer with variable light transmittance.Although this type of information presentation allows for a number of possible applications, it is relatively complex to implement.

[0003] The invention is based on the object of providing a door device for a rail vehicle designed for transporting passengers, with a visualization device that allows for the visualization of information with minimal effort. Likewise, a rail vehicle designed for transporting passengers is to be provided with such a door device.

[0004] This object is solved by the features of claims 1 and 15. Disclosure of the invention

[0005] The invention relates to a door device of a rail vehicle designed to transport passengers, which comprises at least the following: a) At least one movable door with at least one window pane, the door being designed and arranged to allow passengers to board and alight, and b) a visualisation device which is designed and arranged to display variable visual information to passengers and which comprises: c) an electronic control which is designed and arranged to generate at least one electrical potential.

[0006] The invention then uses, like DE 10 2014 214 585 A1, so-called smart windows or smart glasses or electrochromic glasses, which essentially consist of two transparent carrier layers and two transparent electrodes arranged thereon, as well as an active region arranged between them. This active region can preferably be designed as a fluid layer or polymer matrix with suspended particles suspended therein. If an appropriate potential is then applied to the electrodes, the suspended particles are aligned and thus the component becomes transparent or translucent. If the electrical potential is reduced or switched off completely, the suspended particles will align themselves in a statistically distributed manner, whereby light entering through the carrier layers is absorbed accordingly and the smart window or the electrochromic glass becomes dark or opaque.In this way, window panes can be electrically switched between full transparency and a dark or opaque state.

[0007] However, the invention has recognized that these properties of smart windows or smart glass can be used not only for a separating layer between two displays as in DE 10 2014 214 585 A1, but also to directly display information for passengers via a window pane of a door of a door device of a rail vehicle designed to transport passengers, in particular for passengers inside and outside the rail vehicle.

[0008] Based on this, the invention proposes that the visualization device further comprises at least the following: d) a first region of the window pane, the first transparency of which can be reversibly changed by the electric potential, and e) at least one second region of the window pane, the second transparency of which can be reversibly changed by the electrical potential depending on or independently of the first transparency.

[0009] The control is designed in particular to control or input a first electrical potential for or into the first region and - in particular dependent or independent therefrom - a second electrical potential for or into the at least one second region.

[0010] The first area and each of the second areas of the window pane, if more than one second area is provided or present, can be individually switched by the electronic control between a maximum opaque state and a maximum translucent state. It is clear that any number or plurality of second areas can be provided, each of which can be individually and reversibly changed in terms of its transparency by the electronic control.

[0011] The fact that the transparency can be reversibly changed by the electrical potential means that the light transmittance of the first region and the at least one second region can be changed between a maximally light-transmitting (transparent) state and a maximally light-opaque state, and into states in between, and that the change in state can be reversed or reversed. Depending on the respective electrical potential, the transparency can also be adjusted essentially continuously between the maximally light-transmitting or maximally light-opaque state and the maximally light-transmitting or maximally transparent state, in a dimming manner.

[0012] The first region and the at least one second region of the window pane then have a translucency or transparency that is dependent on the electrical potential supplied to the respective region by the electronic control system. In particular, the first region and the at least one second region of the window pane then each consist of a smart glass or electrochromic glass described above or comprise such a glass.

[0013] The visual information that can be conveyed to passengers depends, for example, on a) the number and / or shape / outline and / or colour of the areas whose transparency is changed by the electronic control system by individually adjusting the electrical potential, and b) from the time at which such individual adjustment takes place, and c) the duration of the adjustment.

[0014] This provides a number of control options for the areas in terms of their transparency and thus the display of visual information.

[0015] For example, the color "green" generally means that an action can be carried out or that the execution of an action is permitted. Applied to the door in question, this can mean that, for example, an area of ​​the door window colored "green" is switched to opaque (transparent) by the electronic control system, thereby signaling to passengers that the door in question can be opened, in particular by operating a door operating device, for example a door operating head. In contrast, the color "red" generally symbolizes that an action cannot or should not be carried out or is not possible, in this case, for example, that the door in question cannot or should not be opened, in particular by operating the door operating device.Consequently, in the case described here as an example, where the door in question should not or cannot be opened by passengers, an area colored with the color "red" would be switched to be opaque by the electronic control system, whereas the area colored with the color "green" would be switched to be transparent, so that the color "green" is or becomes essentially unrecognizable there.

[0016] The idea behind this is that the color of a colored area of ​​an electrochromic glass is best perceived when this area has been or remains opaque. A small amount of light is then sufficient, for example through external illumination of the opaque area by natural or artificial light, for the color of the colored area to be perceived. In contrast, this color is essentially not or hardly perceptible when the colored area is or remains transparent because the color then fades. The same applies to outlines of symbols or alphanumeric characters arranged in the first area and / or in the at least one second area.They are most visible when the area in question is set to opaque and essentially invisible when the area in question is set to transparent, because then the outlines fade and can then hardly be perceived.

[0017] In a further example, the first region has at least one first stripe or bar, and the at least one second region has at least one second stripe or bar arranged parallel to the first stripe. The electronic control system can then be designed such that, as a function of time, it uses the electrical potential to change the transparency of the first and second stripes and bars arranged parallel to one another as a function of time, such that initially all of the first and second stripes or bars are opaque and thus visible, but as time increases, the number of opaque first and second stripes or bars decreases until, for example, no stripe or bar is opaque and thus visible anymore.The time function then indicates the possible period of time within which passengers can open the door, for example, during a platform stop of the rail vehicle. It is activated in particular by a signal generated, for example, by a central train control system. The time-dependent, opaque strips or bars can then be used to visually communicate to passengers the period of time within which the door can still be opened, for example, by operating a door operating device.

[0018] The window pane, in particular a third region of the window pane that differs from the first region and the at least one second region, should continue to retain the effect and function of a window or light passage. This means that the third region of the window pane is or remains permanently translucent, so that light can penetrate this third region. A first portion of the first region, a second portion of the at least one second region, and a third portion of the third, permanently translucent region in the total area of ​​the window pane are determined by the person skilled in the art as required. Preferably, the third portion of the third region is larger than the sum of the first portion and the second portion. Alternatively, the third region can be omitted entirely, so that the first region and the at least one second region together can form the total area of ​​the window pane.

[0019] It is further clear that light can penetrate the first region and / or the at least one second region from the outside and / or from the inside, depending on an installation state in the rail vehicle, if the region in question is switched to be translucent. This light can therefore be daylight or originate from interior lighting of the rail vehicle.

[0020] Overall, the measures described above reduce the effort required to present visual information to passengers because displays or LEDs are no longer required.

[0021] Advantageous further developments of the invention are possible in the subclaims.

[0022] Preferably, the electronic control is designed to control the first region and the at least one second region in the same direction or in opposite directions with respect to the transparency by means of the electrical potential.

[0023] A simultaneous control of the first and second regions arranged at different positions of the window pane of the door with regard to the transparency by the electrical potential can mean that the first region and the second region are, for example, abruptly or gradually over time, jointly and in parallel converted from an opaque state to a translucent state or from a translucent state to an opaque state.

[0024] Opposing control of the first and second regions arranged at different positions on the window pane of the door with respect to transparency by the electrical potential can mean, for example, that in or at the at least one first region, the electrical potential is reduced or completely switched off, and in or at the at least one second region, the electrical potential is increased or set to a predetermined maximum value. Conversely, in or at the at least one second region, the electrical potential can then also be reduced or completely switched off, and in or at the at least one first region, the electrical potential can be increased or set to a predetermined maximum value.

[0025] If, for example, the first area has a first color or is colored in the first color and the at least one second area has a second color different from the first color or is colored in the second color, by controlling the first and second areas arranged at different positions on the window pane of the door in opposite directions, for example only the first area or alternatively only the second area can be switched to be translucent (transparent), in which case the color of the area switched to be transparent is then essentially not recognizable or perceptible by passengers because light can pass through there (e.g. maximum light transmittance). In contrast, the other area in each case becomes or remains opaque, non-transparent or light-impermeable, so that the color of the other area in each case can then be recognized or perceived by passengers.

[0026] Preferably, the electronic control is designed and configured to generate the electrical potential depending on a status signal that represents a status of the door in relation to whether the door is, in particular, additionally dependent on an actuation of a door actuating member a) can or may be opened, or b) cannot or should not be opened.

[0027] The door operating element can be designed, in particular, to generate an opening signal OS when actuated, in particular manually, by a passenger or a person. The opening signal OS and the status signal ST can then be linked to one another in a logical "AND gate" of the electronic control system such that an opening of the door, in particular triggered by the electronic control system, is only initiated if, on the one hand, the status signal ST represents the status of the door, that it can or may be opened, and, on the other hand, the opening signal OS is present, which is only generated when the door operating element is actuated. If, on the other hand, the status signal ST, which is positive with regard to permitted door opening, is not present, the door cannot be opened by actuating the door operating element alone.

[0028] The electronic control is in particular an electronic door control or is comprised by such a control which is designed and configured to control at least one door drive of the door at least as a function of the opening signal OS and the status signal ST.

[0029] With regard to the electronic control system, the status signal ST is preferably an external signal that is generated outside the electronic control system, for example, in a central train control system, and fed into the electronic control system. In this respect, a status signal ST that represents the status of the door—that it can or may be opened—represents an enable signal for opening the door.

[0030] Alternatively, the status signal relating to the electronic control unit can be an internal signal generated within the electronic control unit, for example, if the electronic control unit forms an integral control unit with another control unit. However, the electronic control unit can also be a separate electronic control unit, which, for example, is designed exclusively to control the at least one first region and the at least one second region with respect to the electrical potential.

[0031] As already indicated above, the first region may have a first color or be colored in the first color and the at least one second region may have a second color different from the first color or be colored in the second color.

[0032] Preferably, the first and second colors are colors other than white, gray, or black to ensure good color perception. It is essential that the first and second colors are distinguishable from each other when the relevant area is switched to opaque by the electronic control system.

[0033] In particular, the first color can be green and the second color can be red. The color "green" is understood to mean all shades of green, and the color "red" is understood to mean all shades of red.

[0034] As explained above, these colors have a signaling effect with regard to commands or prohibitions of actions, for example in this case relating to a possible opening of the door, whereby “green” is intended to symbolize the possibility of opening the door, and “red” that the door cannot or should not be opened.

[0035] The coloring of the areas can be realized, for example, by a) the first area of ​​the window pane is coated with a first film having the first colour, and b) the at least one second region of the window pane is coated with a second film having the second color.

[0036] Alternatively, intelligent glass colored according to the first color and the second color can be used for the first area and for the at least one second area.

[0037] According to a further development, the first region and / or the at least one second region can be arranged between several ESG panes (single-pane safety glass) or in a laminated safety glass (VSG) in order to protect it (them) from external influences.

[0038] Then the electronic control system can be designed and configured to a) to make the first area of ​​the window pane opaque with the first colour and the at least one second area of ​​the window pane transparent with the second colour, when the door can be opened, in particular after actuation of the door operating device, and b) to switch at least one second area of ​​the window pane with the second colour to opaque and the first area of ​​the window pane with the first colour to transparent if the door cannot or must not be opened, in particular despite actuation of the door operating device.

[0039] At least one light source controlled by the electronic control system can also be provided in such a way that it illuminates or backlights the at least one first region or the at least one second region of the window pane, in particular depending on whether the relevant region has been switched to be transparent or opaque by the electronic control system or not.

[0040] Improved perception of the opaque area or its color can be ensured if the electronic control system activates the light source to illuminate or backlight the first area or at least one second area of ​​the window pane when the respective area has been or will be opaqued by the electronic control system. However, the light available on platforms or inside the rail vehicle is generally sufficient to illuminate opaque areas so that the prevailing color is still visible.

[0041] Preferably, the first region and the at least one second region a) be arranged in a common plane and, within the common planes, in particular be directly adjacent to one another or spaced apart from one another, or b) be arranged in different planes which are arranged one above the other in layers, wherein the first region and the at least one second region at least partially overlap.

[0042] As already explained above, the first region may comprise at least one first strip or bar, and the at least one second region may comprise at least one second strip or bar arranged parallel to the first strip. In particular, the first and second strips or bars may be arranged horizontally next to one another or vertically one above the other and / or each have the same dimensions or different dimensions.

[0043] The electronic control can also be designed such that it changes the transparency of the first and second stripes and bars arranged parallel to one another as a function of time by means of the electrical potential in such a way that a) initially all the first and second stripes or bars are opaque, but with increasing time the number of opaque first and second stripes or bars decreases, or that b) initially all the first and second stripes or bars are translucent, but with increasing time the number of translucent first and second stripes or bars decreases.

[0044] The increase or decrease of the translucent or opaque first and second stripes or bars preferably takes place successively in one direction, ie the increase or decrease takes place by switching between adjacent stripes or bars.

[0045] In this context, the electronic control system can be configured to initiate the time function upon a signal S representing the earliest possible opening of the door. This signal S can be generated, for example, by a central train control system.

[0046] In order to be able to display diverse visual information, it may be advantageous according to a further development if the first region and / or the at least one second region has / have an outline that represents at least one alphanumeric character, a number, a letter, a graphic, a symbol, and / or a pictogram. This outline then becomes visible, particularly in the opaque state, and the corresponding visual information can be identified, whereas in the transparent state this is essentially impossible because the contours of the outline fade.

[0047] This can be realized, for example, in that the first region and / or the at least one second region themselves have a shape or an outline which then represents the at least one alphanumeric character, the at least one number, the at least one letter, the at least one graphic, the at least one symbol and / or the at least one pictogram.

[0048] The invention also relates to a rail vehicle designed for transporting passengers, which comprises at least one door device as described above. drawing

[0049] Exemplary embodiments of the invention are illustrated in the drawings below and explained in more detail in the following description. In the drawing, Fig. 1 a schematic side view of a door of a door device of a rail vehicle designed to transport passengers according to an embodiment, wherein the door has a first embodiment of a visualization device on its window pane; Fig. 2 the window pane of the door of Fig. 1 with a second embodiment of the visualization device; Fig. 3 the window pane of the door of Fig. 1 with a third embodiment Description of the embodiments

[0050] Fig. 1 shows a schematic side view of a door 1 of a door device 100 of a rail vehicle designed for transporting passengers according to one embodiment, wherein the door 1 has a part of a first embodiment of a visualization device 3 on its window pane 2. The door 1 is mounted, for example, displaceably and optionally also pivotably on a door portal (not shown here) of the door device 100 and preferably represents a sliding door or a pivoting-sliding door. The door 1 is designed and configured to enable passengers to board and disembark with respect to the rail vehicle and, for this purpose, is driven by a door drive (not shown here) between an open position and a closed position in order to cover or open a door opening of the door portal. The door drive is controlled by an electronic door control system.Furthermore, the door device 100 with the door 1 is preferably arranged on a side wall of the rail vehicle.

[0051] The door 1 has the window pane 2, which is at least partially translucent and which is designed as an electrochromic glass pane or smart glass pane in a first region 4 and here in a second region 5. A third region 6, which remains here, consists of glass that is always translucent, as is commonly used for windows on rail vehicles. The first region 4 and the second region 5, each made of electrochromic glass, can, for example, be inserted into corresponding receptacles in the third region 6 or, in the event that the third region 6 occupies the entire window pane 2, can also be applied to the third region 6 in the manner of a layer from the inside or outside.

[0052] The visualization device 3 of the door device 100 is designed and configured to visualize variable visual information for the passengers of the rail vehicle. In addition to the first region 4 and the second region 5, the visualization device 3 comprises an electronic controller 7, which is designed and configured to generate an electrical potential, in particular a first electrical potential U1 for the first region 4 and in particular, dependently or independently thereof, a second electrical potential U2 for the second region 5. For this purpose, the electronic controller 7 is connected to the first region 4 and to the second region 5 via lines 8. Furthermore, the electronic controller 7 is integrated here, for example, into the electronic door control, which controls, among other things, the door drive.

[0053] Depending on the first and second electrical potentials U1, U2 controlled by the electronic control 7, the first transparency of the first region 4 and the second transparency of the second region 5 can each be reversibly changed between a maximally opaque state and a maximally translucent state, although intermediate states between these extremes are naturally possible. Therefore, at maximum transparency of the respective region 4, 5, light can penetrate the area between the inside and outside; at maximum opacity, this is only possible to a limited extent or essentially not at all.

[0054] Preferably, in the embodiment described here, the first region 4 is colored green or is coated with a green film and the second region 5 is colored red or is coated with a red film.

[0055] As already described above, the color "green" generally means that an action can be performed or that the execution of an action is permitted. Applied to door 1 of Fig. 1, this means that the first area 4 of the window pane 2 of the door 1, colored "green," is switched to maximum light transmission (transparent) by the electronic control 7 when the passengers are to be signaled that the door 1 can or may be opened, in particular by actuating a door operating device 9 that interacts with the electronic control 7. In contrast, the second area 5 is then switched to opaque with the color "red," so that the color "red" is not recognizable there because essentially no light can penetrate the second area 5.

[0056] In contrast, the color "red" generally symbolizes that an action cannot or should not be carried out, here, for example, that the door 1 in question cannot or should not be opened, in particular by actuating a door operating device 9, for example a door operating head. Consequently, in the case described here as an example, in which the door 1 in question should not be able to be opened by passengers despite actuating the door operating device 9, the second area 5 colored "red" would be switched to translucent (transparent) by the electronic control 7, whereas the first area 4 is switched to the color "green" or remains opaque, so that the color "green" is or becomes unrecognizable there.

[0057] Preferably, the electronic control 7 is designed and configured to generate the first and second electrical potential U1, U2 depending on a status signal ST, which indicates or represents a status of the door 1 as to whether the door 1 can or may be opened, or alternatively cannot or should not be opened.

[0058] The door operating element 9 is designed, for example, to generate an opening signal OS when actuated, in particular manually, by a passenger or a person. The opening signal OS and the status signal ST are linked to one another here, for example, in a logical "AND gate" of the electronic control 7 such that an opening of the door 1 by the electronic control 7 is only initiated if, on the one hand, the status signal ST indicates the status of the door 1, that it can or may be opened, and, on the other hand, the opening signal OS is present, which is generated when the door operating element 9 is actuated. If, however, no status signal ST is present in this sense, the door cannot be opened by actuating the door operating element 9 alone.

[0059] With respect to the electronic control system 7, the status signal ST is preferably an external signal that is generated outside the electronic control system 7, for example, in a central train control system (not shown here), and fed into the electronic control system. In this respect, a status signal ST, which represents the status of door 1—that it can or may be opened—represents an enable signal for opening door 1.

[0060] Assuming that the status signal ST here is intended to allow the door 1 to be opened, the electronic control 7 controls the first area 4 with a first electrical potential U1, which switches or keeps the first area 4 opaque, so that passengers perceive the color "green" of this first area 4 and can open the door 1 by actuating the door operating element 9. In contrast, the electronic control 9 then controls the second area 5 with a second electrical potential U2, which ensures that this second area 5 becomes or remains transparent, whereby the color "red" is not visible there. In the first exemplary embodiment, a first transparency T1 of the first area 4 is therefore controlled in the opposite direction to a second transparency T2 of the second area 5.

[0061] Fig. 2 shows the window pane 2 of the door 1 of Fig. 1 with a second embodiment of the visualization device 3. There, the first area 4 has an outline which represents, for example, an arrow pointing to the left and the second area 5 has an outline which represents an arrow pointing to the right.

[0062] If an area 4 or 5 is then switched to opaque or opaque by the electronic control system 7, the corresponding arrow becomes visible; however, if switched to translucency or transparency, it remains invisible. The visible arrow can provide passengers with the visual information to move to the right or left in relation to door 1, for example, to exit the rail vehicle via another door or to board the rail vehicle if door 1 cannot be opened.

[0063] It is clear that instead of the arrows, the two areas 4, 5 can display any shape or outline visible to passengers, in particular by means of opaque switching, including alphanumeric characters, numbers, letters, graphics, symbols and / or pictograms.

[0064] Fig. 3 shows the window pane 2 of the door of Fig. 1 with a third embodiment of the visualization device 3. There, a first region 4 has a first stripe or bar, a second region 5a has a second stripe or bar arranged parallel to the first stripe, a further second region 5b has a further second stripe or bar arranged parallel to the first stripe, a further second region 5c has a further second stripe or bar arranged parallel to the first stripe, etc. Overall, therefore, a first region 4 and a number n of second regions 5a, 5b, 5c ... 5n, each with, for example, one stripe or bar, are arranged on or at the window pane 2, which are preferably distributed equidistantly in the horizontal direction and each run parallel in the vertical direction. Furthermore, the stripes or bars should, for example, each have the same dimension.The transparency of the first region 4 can then be individually controlled by an electrical potential U1 and the transparency of the second regions 5a, 5b, 5c ... 5n each with a potential U2a, U2b, U2c ... U2n.

[0065] The electronic control 7 is then designed to change the transparency T1, T2a, T2b, T2c...T2n of the stripes and bars as a function of time t by means of the respective electrical potential U1, U2a, U2b, U2c...U2n within the framework of a time function which is initiated at a time t0. For example, starting at time t0, all stripes or bars can be changed, in particular abruptly, from an opaque state to a translucent state or vice versa. However, starting at time t0, at which, for example, all areas 1, 5a, 5b, 5c...5n with stripes and bars are or are switched to be opaque, the number of opaque stripes or bars is preferably reduced as time t increases, here in particular in one direction and successively, by gradually changing adjacent stripes or bars to a translucent state.This switching occurs here, for example, from left to right, as indicated by arrow 10 in . Fig. 3. This time function ends at a time t1, at which no stripes or bars are transparent or translucent anymore, so that then none of the stripes or bars are visible anymore. The decrease of the opaque stripes or bars and the concomitant increase of the translucent stripes or bars therefore occurs preferentially in one direction (here, for example, according to Fig. 3 in the horizontal direction from left to right) takes place successively in a period between the start time t0 and the end time t1 of the time function, ie the decrease or increase occurs by switching adjacent stripes or bars from the opaque to the translucent state by the electronic control 7. A reversal is of course also conceivable, ie a successive switching of the initially all translucent stripes or bars to the opaque state.

[0066] The electronic control starts the time function, for example, on a signal S ( Fig. 1), which is generated, for example, at time t0 and represents the earliest possible opening of the door by passengers, and ends at time t1, at which time this should no longer be possible. Signal S is generated here, for example, by the central train control system. The time function can be used to visually communicate to passengers, based on the number of (still) visible stripes or bars, the amount of time remaining from time t0 to open the door, for example, by operating the door opening device 9.

[0067] It is clear that the embodiments described here can also be combined with each other, for example the first embodiment of Fig. 1 with the third embodiment of Fig. 3, whereby passengers can then be given visual information about which doors can be opened for what period of time by operating the door operating device 9.

[0068] Also, a combination of the first embodiment of Fig. 1 with the second embodiment of Fig. 2 is conceivable if, for example, door 1 cannot be opened due to a defect and therefore Fig. 1 the second area “Red” 5 and in Fig. 2 the first area 4 with the arrow pointing to the left can be made transparent to inform passengers of the position of the nearest door that can be opened.

[0069] According to a Fig.In the embodiment shown in Figure 4, the first region 4 and the second region 5 can also be arranged in different, for example parallel, planes and, for example, overlap instead of in a common plane as in the previously described embodiments. Then, for example, the first region 4 can be switched to opaque and the second region to transparent by the electronic control, with the result that the color and / or an outline of the first region 4 is or becomes visible or perceptible, but the color and / or outline of the second region 5 is or becomes not. Since light can penetrate the transparent second region 5, the color and / or outline of the first opaque region becomes visible or perceptible from two sides. List of reference symbols 1 door 2 window panes 3 Visualization device 4 first area 5, 5a, 5b, 5c...5n second area 6 third area 7 electronic control 8 lines 9 Door operating device 10 Arrow 100 door device U1 first electrical potential U2, U2a, U2b... U2n second electrical potential S Signal ST status signal OS opening signal T1 first transparency T2, T2a, T2b, T2c...T2n second transparency QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2014 214 585 A1 [0002, 0006, 0007]

Claims

[1] Door device (100) of a rail vehicle designed to transport passengers, comprising at least the following: a) At least one movable door (1) with at least one window pane (2), the door (1) being designed and arranged to allow passengers to get on and off, and b) a visualisation device (3) which is designed and arranged to visualise variable visual information for the passengers and which comprises: c) an electronic control (7) which is designed and arranged to generate at least one electrical potential (U1, U2; U2a, U2b, U2c..U2n), characterized by that the visualization device (3) further comprises: d) a first region (4) of the window pane (2), the first transparency (T1) of which can be reversibly changed by the electrical potential (U1), and e) at least one second region (5; 5a, 5b, 5c...5n) of the window pane (2), the second transparency (T2; T2a, T2b, T2c...T2n) of which can be reversibly changed by the electrical potential (U2; U2a, U2b, U2c..U2n) depending on or independently of the first transparency (T1). [2] Door device according to claim 1, characterized by that the electronic control (7) is designed to control the first region (4) and the at least one second region (5; 5a, 5b, 5c...5n) in the same direction or in opposite directions with respect to the transparency (T1, T2; T1, T2a, T2b, T2c...T2n) by means of the electrical potential (U1, U2; U2a, U2b, U2c..U2n). [3] Door device according to one of the preceding claims, characterized by that the electronic control (7) is designed and arranged to generate the electrical potential (U1, U2; U2a, U2b, U2c..U2n) depending on a status signal (ST) which represents a status of the door (1) as to whether the door (1) a) can be opened, or b) cannot or may not be opened. [4] Door device according to claim 3, characterized by that the status signal (ST) a) is an internal signal generated within the electronic control (7), or b) is an external signal that is generated outside the electronic control (7) and fed into the electronic control (7). [5] Door device according to one of the preceding claims, characterized by , that a) the first region (4) of the window pane (2) has a first colour or is coloured in a first colour, and b) the at least one second region (5; 5a, 5b, 5c...5n) of the window pane (2) has a second color different from the first color or is colored in the second color. [6] Door device according to claim 5, characterized by , that a) the first region (4) of the window pane (2) is coated with a first film having the first color, and b) the at least one second region (5; 5a, 5b, 5c...5n) of the window pane (2) is coated with a second film having the second color. [7] Door device according to claim 5 or 6, characterized by that the electronic control (7) is designed and arranged to a) to switch the first area (4) of the window pane (2) opaque with the first color and the at least one second area (5) of the window pane (2) transparent with the second color when the door (1) can or may be opened, and b) to switch the at least one second area (5) of the window pane (2) opaque with the second color and the first area (4) of the window pane (2) transparent with the first color when the door (1) cannot or must not be opened. [8] Door device according to one of claims 5 to 7, characterized by that the first color is green and the second color is red. [9] Door device according to one of the preceding claims, characterized by that at least one light source controlled by the electronic control (7) is provided in such a way that the light source illuminates or backlights either the first region (4) or the at least one second region (5; 5a, 5b, 5c...5n) of the window pane (2), in particular depending on whether the relevant region has been switched to be transparent or opaque by the electronic control (7) or not. [10] Door device according to one of the preceding claims, characterized by that the first region (4) and the at least one second region (5; 5a, 5b, 5c...5n) a) are arranged in a common plane and, within the common planes, are in particular directly adjacent to one another or spaced apart from one another, or b) are arranged in different planes which are arranged one above the other in layers, wherein the first region and the at least one second region at least partially overlap. [11] Door device according to one of the preceding claims, characterized by that the first region (4) and / or the at least one second region (5; 5a, 5b, 5c...5n) has (have) an outline which represents at least one alphanumeric character, a number, a letter, a graphic, a symbol and / or a pictogram. [12] Door device according to one of the preceding claims, characterized by that the first region (4) has at least one first strip or bar and the at least one second region (5a, 5b, 5c...5n) has at least one second strip or bar arranged parallel to the first strip. [13] Door device according to claim 12, characterized bythat the electronic control (7) is designed such that it changes the transparency (T1, T2a, T2b, T2c ... T2n) of the first and second strips and bars arranged parallel to one another as a function of time by means of the electrical potential (U1, U2a, U2b, U2c ... U2n) in such a way that a) initially all the first and second stripes or bars are opaque or opaque, but with increasing time (t) the number of opaque or opaque first and second stripes or bars decreases, or that b) initially all the first and second stripes or bars are translucent or transparent, but with increasing time (t) the number of translucent or transparent first and second stripes or bars decreases. [14] Door device according to claim 13, characterized bythat the electronic control (7) is designed to start the time function in response to a signal (S) which represents a possible or permitted opening of the door (1). [15] A rail vehicle designed to transport passengers, comprising at least one door device (100) according to one of the preceding claims.

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