Signposting device for tactilely indicating a direction to an input area, display device for a vehicle, method for operating a signposting device and method for manufacturing a signposting device

Abstract

A signposting device (110) for tactilely indicating a direction to an input area (115), the signposting device (110) having the following features: - a sound barrier (200) with at least one double gap (205), wherein the double gap (205) has a first opening (210) and a second opening (215) arranged adjacent to the first opening (210), and wherein the double gap (205) is designed to diffract sound waves (220) and to cause interference of the diffracted sound waves (220); - a resonance chamber (235) arranged adjacent to the sound barrier (200) and configured to amplify interfered sound waves (220) by a natural oscillation (240) to provide vibration; and - a flexible functional element (260), wherein the sound barrier (200) and the functional element (260) are arranged on opposite sides, wherein the functional element (260) is arranged adjacent to the resonance chamber (235) and is designed to point the direction to the input area (115) using the vibration.

Description

State of the art

[0001] The approach is based on a wayfinding device for tactilely indicating a direction to an input area, a display device for a vehicle, a method for operating a wayfinding device, and a method for manufacturing a wayfinding device according to the preamble of the independent claims. The present approach also relates to a computer program.

[0002] US 8 816 977 B2 describes an electronic device with a flexible display surface having a matrix of display pixels and internal components arranged below the display surface, such as a loudspeaker, an actuator that deforms the display surface or a pressure sensor.

[0003] From DE 10 2021 207 239 A1 a guiding device for guiding a hand of a user of a vehicle and a method for operating a guiding device are known.

[0004] From DE 10 2017 116 012 A1 a display device with an optical structure with a plurality of pixels is known.

[0005] DE 10 2017 006 597 A1 discloses a vehicle operating device with haptic feedback by ultrasound. Disclosure of the invention

[0006] Against this background, the approach presented here presents an improved wayfinding device for tactilely indicating a direction to an input area, an improved display device for a vehicle, an improved method for operating a wayfinding device and an improved method for producing a wayfinding device, furthermore a device that uses this method and finally a corresponding computer program according to the independent claims.

[0007] The measures listed in the dependent claims enable advantageous further developments and improvements of the device specified in the independent claim.

[0008] The approach presented here creates the possibility of increasing comfort and road safety, for example by reducing driver distraction. Furthermore, it is easier for the driver to locate and operate vehicle functions, so that they do not have to take their eyes off the road. Furthermore, the approach presented here can also be used for vehicles that have, for example, extensive, curved displays that extend across the width of the cockpit. The approach presented here also enables a reduction in the number of components, which in turn reduces assembly effort. Furthermore, the approach presented here improves robustness. Overall, the approach presented here enables improved energy efficiency, reduced use of raw materials, and simplified manufacturing and / or recycling processes.The susceptibility to errors can also be reduced, as the number of electrical connections can be reduced.

[0009] A wayfinding device for tactilely indicating a direction to an input area is presented, wherein the wayfinding device comprises a sound barrier with at least one double gap, which has a first opening and a second opening arranged adjacent to the first opening. The double gap is designed to diffract sound waves and to cause interference between the diffracted sound waves. Furthermore, the wayfinding device comprises a resonance chamber arranged adjacent to the sound barrier, which is designed to amplify interfered sound waves through natural oscillation in order to provide vibration, and a flexible functional element, wherein the sound barrier and the functional element are arranged on opposite sides. The functional element is arranged adjacent to the resonance chamber and is designed to indicate the direction to the input area using the vibration.

[0010] The wayfinding device can, for example, be formed as part of a display device, such as a touch-sensitive display, which is implemented, for example, in a vehicle. The vehicle can, for example, be shaped as a passenger car. The sound barrier can, for example, be implemented in a layer-like manner. The openings can also be realized as through-holes or bores. The double gap disrupts the flow of the sound waves so that they interfere with one another and, for example, additive and canceling wave nodes can form. The resonance chamber can, for example, be shaped as a hollow space that can be set into natural vibration, thereby triggering the vibration. The vibration can, for example, be perceived by a user as a tactile stimulus in the form of a wave on the functional element.The vibration can be described, for example, as successive wave crests and troughs. The functional element can be shaped, for example, to also provide tactile feedback to the user. Furthermore, the user's hand can be guided to a target point, such as the input area. Advantageously, the user does not need to look at the guidance device, allowing them to continue to monitor the traffic, for example. This can advantageously reduce the risk of distraction and increase road safety.

[0011] According to one embodiment, the guidance device can comprise a carrier medium for conducting the sound waves from the double gap to the resonance chamber, in particular wherein the carrier medium is designed to filter sound waves. The carrier medium can be formed, for example, as an information carrier or as a carrier substrate. The carrier medium can be formed, for example, in a gaseous, gel-like, or solid form, which can be arranged between the functional element and the sound barrier.

[0012] The functional element can be formed as a display film of a display device. Advantageously, the functional element can be designed to be flexible, so that it can be arranged on a large surface of the vehicle, for example, in the area of ​​a passenger airbag.

[0013] The guidance device can comprise an actuator for providing sound waves in the direction of the sound barrier. The actuator can, for example, be implemented as an internal component that can be arranged on a side of the sound barrier opposite the functional element. Advantageously, the use of the actuator and the sound waves can reduce the number of components, since, for example, no electrical lines are required between the actuator and the functional element. This can also reduce manufacturing costs.

[0014] According to one embodiment, the shape and, additionally or alternatively, the dimensions of the openings of the double slit can differ. Advantageously, the openings can be shaped to allow the sound waves to pass through at different positions. For example, the openings can cause the sound waves to be disrupted in their path, allowing them to interfere with each other. Furthermore, the sound waves can, for example, have different frequencies. The dimensions of the openings can, for example, allow the sound waves to form different interference patterns.

[0015] Furthermore, the wayfinding device can have at least one further resonance chamber laterally offset from the resonance chamber, which can be designed to amplify interfered sound waves through natural oscillations of the further resonance chamber in order to generate further vibrations. In particular, the resonance chamber and the further resonance chamber can be designed to emit the vibrations and the further vibrations in a wave-like manner in order to show the way. The resonance chambers can be implemented, for example, as cavities that can be egg-shaped or oval. Alternatively, the resonance chambers can be implemented in an angular manner and border on a side of the medium opposite the double gap. Advantageously, a user can perceive a tactile stimulus, which represents, for example, a waveform, through the natural oscillation of the resonance chambers.This allows the user, or for example, a user's hand, to be guided to the input area without the user having to look at the guidance device, thus advantageously improving traffic safety. Analogous to the resonance chamber and the additional resonance chamber, the guidance device can have a plurality of resonance chambers.

[0016] The sound barrier can have at least one further double slit that is laterally offset from the double slit and can have a further first opening and a further second opening arranged adjacent to the further first opening. The further double slit can be designed to be able to diffract sound waves and to cause interference between the diffracted sound waves. The further double slit can, for example, be shaped like the double slit, so that the further openings can be realized, for example, as through-openings. The openings can, for example, be punched or drilled. Advantageously, the wayfinding device can output the tactile stimulus to the user over a large area so that the user can find the input area.

[0017] According to one embodiment, the resonance chamber can be spanned, enclosed, and additionally or alternatively surrounded by a membrane, which can be formed, in particular, as a functional film. The membrane can advantageously be set into vibration, thereby causing the resonance chamber to vibrate naturally using the sound waves acting on the resonance chamber. Advantageously, the sound waves can be amplified so that the user can, for example, perceive wave crests as vibrations.

[0018] Furthermore, a display device for a vehicle is presented, which can have a display area for displaying an image and additionally or alternatively an input area for entering data, as well as a signposting device in a previously mentioned variant.

[0019] The display device can be configured, for example, as a touch-sensitive display, which can be arranged, for example, flatly on a surface of an interior of the vehicle. The display device can also be curved, for example, and thus be arranged, for example, in the area of ​​a dashboard or adjacent thereto. The display device can advantageously be configured to display user-specific and additionally or alternatively vehicle-specific information using the guidance device, or, for example, to select or display vehicle functions.

[0020] A method for operating a wayfinding device in a variant mentioned above is also presented, which comprises a step of outputting sound waves in response to a detection signal, a step of generating a vibration using a natural vibration of the resonance chamber, and a step of providing the vibration to the functional element in order to point the direction to an input area of ​​a display device.

[0021] Advantageously, the method can be controlled or implemented in such a way that sound waves with different frequencies, for example, 64 Hz, 96 Hz, 128 Hz, and 256 Hz, can be emitted to generate the vibration. Advantageously, the vibration can represent a wave motion that can travel in opposite directions, taking into account the detection signal, which can represent a user's touch position.

[0022] In addition, a method for producing a wayfinding device in a previously mentioned variant is presented, wherein the method comprises a step of providing the carrier medium with a resonance chamber side and a sound barrier side opposite the resonance chamber side, a step of arranging at least one resonance chamber on the resonance chamber side of the carrier medium, furthermore a step of applying or introducing the sound barrier into the carrier medium on the sound barrier side of the carrier medium and a step of arranging the functional element on the resonance chamber side in order to produce the wayfinding device.

[0023] This method can be implemented, for example, in software or hardware or in a mixed form of software and hardware, for example in a control unit.

[0024] The approach presented here further provides a device configured to perform, control, or implement the steps of a variant of a proposed method in corresponding devices. This variant of the approach in the form of a device also allows the underlying problem to be solved quickly and efficiently.

[0025] For this purpose, the device can have at least one computing unit for processing signals or data, at least one memory unit for storing signals or data, at least one interface to a sensor or actuator for reading sensor signals from the sensor or for outputting data or control signals to the actuator, and / or at least one communication interface for reading or outputting data embedded in a communication protocol. The computing unit can be, for example, a signal processor, a microcontroller, or the like, wherein the memory unit can be a flash memory, an EEPROM, or a magnetic storage unit.The communication interface can be designed to read in or output data wirelessly and / or via a wired connection, wherein a communication interface that can read in or output wired data can read this data, for example, electrically or optically from a corresponding data transmission line or output it to a corresponding data transmission line.

[0026] In this case, a device can be understood as an electrical device that processes sensor signals and outputs control and / or data signals depending on them. The device can have an interface that can be implemented in hardware and / or software. In a hardware implementation, the interfaces can, for example, be part of a so-called system ASIC, which contains a wide variety of functions of the device. However, it is also possible for the interfaces to be separate integrated circuits or to consist at least partially of discrete components. In a software implementation, the interfaces can be software modules that are present, for example, on a microcontroller alongside other software modules.

[0027] Also advantageous is a computer program product or computer program with program code that can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and is used to carry out, implement and / or control the steps of the method according to one of the embodiments described above, in particular when the program product or program is executed on a computer or a device.

[0028] Examples of the approach presented here are shown in the drawings and explained in more detail in the following description. It shows: Fig. 1 a schematic representation of a vehicle with a display device according to an embodiment; Fig. 2 a schematic representation of a wayfinding device according to an embodiment; Fig. 3 a schematic representation of an embodiment of a wayfinding device; Fig. 4 a schematic representation of an embodiment of a wayfinding device; Fig. 5 a schematic representation of an embodiment of a wayfinding device; Fig. 6 a schematic representation of an embodiment of a wayfinding device; Fig. 7 a schematic representation of different forms of a wayfinding device according to an embodiment; Fig. 8 shows a flowchart of a method according to an embodiment for operating a wayfinding device; Fig. 9 is a block diagram of a device according to an embodiment; Fig. 10 is a flowchart of a method according to an embodiment for manufacturing a wayfinding device; and Fig. 11 is a block diagram of a device according to an embodiment.

[0029] In the following description of advantageous embodiments of the present approach, the same or similar reference numerals are used for the elements shown in the various figures and having a similar effect, whereby a repeated description of these elements is omitted.

[0030] Fig. 1 shows a schematic representation of a vehicle 100 with a display device 105 according to an exemplary embodiment. The vehicle 100 is designed, for example, as a passenger car (PKW). The display device 105 is implemented or can be implemented, for example, as a touch-sensitive display which, in addition to a direction-finding device 110, as described in at least one of the following figures, has an input region 115 and / or a display region 120. The direction-finding device 110 is designed to tactilely indicate a direction to the input region 115 to a user. The input region 115 is designed to input data, such as user-specific information, and / or to select vehicle functions, for example. The display region 120 is designed to display an image.In addition, the vehicle 100 according to this exemplary embodiment has a device 125 that is designed to control or carry out a method for operating the guidance device 110, as is also described in more detail in one of the following figures. The vehicle 100 optionally has a sensor unit 130 that is designed to detect a user's touch and, for example, provide a detection signal 135 representing a touch position to the device 125. The device 125 is further designed to control the guidance device 120, for example, using a control signal 140.

[0031] In other words, the approach described here realizes a tactile and / or haptic function for a display.

[0032] Fig. 2 shows a schematic representation of a wayfinding device 110 according to an embodiment. The wayfinding device 110 corresponds to or is at least similar to the wayfinding device 110 shown in Fig. 1. According to this exemplary embodiment, the signposting device 110 is shown in a sectional view. It is designed to show the user a direction to an input area. For this purpose, the signposting device 110 has a sound barrier 200 with at least one double slit 205. The double slit 205, in turn, has a first opening 210 and a second opening 215 arranged adjacent to the first opening 210. The double slit 205 is designed to diffract sound waves 220 and to cause interference of the diffracted sound waves 220. This means that after the sound waves 220 pass through the double slit, the sound waves 220 are, for example, split, i.e., diffracted, so that they can interfere with one another. The interference of the sound waves 220 creates adding or constructively superimposing wave nodes 225 and canceling ordestructively superimposed wave nodes 230 are generated. The additive or constructively superimposed wave nodes 225 amplify, for example, vibrations generated by the sound waves 220. The canceling or destructively superimposed wave nodes 230 have, for example, the property that they cancel each other out. The additive wave nodes 225 are therefore shown according to this exemplary embodiment as intersection points of the diffracted and thus amplifying sound waves 220. The wayfinding device 110 has a resonance chamber 235 adjacent to the sound barrier 200, which is shaped, for example, as a plate. The resonance chamber 235 is designed to amplify the interfered sound waves 220 by a natural vibration 240. This provides a vibration whose wave crests 245 and wave troughs 250 are perceptible, for example, by the user.This means that the user perceives a tactile stimulus, for example, using a tactile organ 255. According to this embodiment, the vibration, i.e., the tactile stimulus, is strongest at the position directly above the resonance chamber 235. Accordingly, the wave crest 245 is highest at this position and flattens out towards the sides.

[0033] Furthermore, the wayfinding device 110 has a flexible functional element 260, wherein the sound barrier 200 and the functional element 260 are arranged on opposite sides. The functional element 260 is arranged adjacent to the resonance chamber 235 and is designed to point the direction to the input area using vibration. The vibration occurs, for example, in a wave-like manner. The functional element 260 is shaped, for example, as a display film that is flatly shaped as the surface of the display device. According to this exemplary embodiment, only a shape and / or a dimension of the openings of the double gap 205 optionally differ, so that the sound waves 220 pass through the double gap 205 at different positions, taking their frequency into account.

[0034] According to this exemplary embodiment, the guidance device 110 has a carrier medium 265 designed to guide the sound waves 220 from the double gap 205 to the resonance chamber 235, in particular, wherein the carrier medium 265 has mechanisms for filtering sound waves. The carrier medium 265 is also referred to, for example, as an information carrier or as a carrier substrate and is, for example, realized or can be realized in a gaseous, gel-like, or solid state. According to this exemplary embodiment, the functional element 260 is arranged on a resonance chamber side 267 of the carrier medium 265, and the sound barrier 200 is arranged on a sound barrier side 268 of the carrier medium 265. Alternatively, it is conceivable that the carrier medium 265 is also implemented in a flexible manner.

[0035] Furthermore, the guidance device 110 has a membrane 270 that spans and / or surrounds the resonance chamber 235. The membrane 270 is formed, for example, as a functional film that is only optionally applied to the carrier medium 265. On a side of the sound barrier 200 facing away from the functional element 260, the guidance device 110 optionally further has an actuator for providing the sound waves 220. The actuator is realized or can be realized, for example, as an internal component and is therefore not shown in this exemplary embodiment.

[0036] In other words, the guidance device 110 can be implemented for a display device that, for example, extends across the entire width of cockpit modules in vehicles. Such displays can, for example, be wider, higher, and / or longer than screens previously used in vehicles, so that using the guidance device 110, the input area is easier to find using the tactile stimulus, which is implemented as a moving wave. This dynamic, moving formation is haptically detected by the tactile organ 255, such as the user's skin, fingers, or hand, which is guided to the target in the direction of the wave. This ensures, for example, that the driver does not have to look away from the road despite the expansive display size.The wayfinding device 110 is also referred to, for example, as a tactile output device, which enables selective mechanical sound wave filtering, allowing the user to haptically or tactilely follow a moving wave without taking their eyes off the roadway. Only optionally does the wayfinding device 110 have a cover plate, which outputs the tactile stimulus, for example, in conjunction with a flexible display, i.e., using the functional element 260.

[0037] The approach presented allows the user to follow the tactile information from any point of contact without having to take their eyes off the road. According to this exemplary embodiment, the sound waves 220, in particular ultrasonic waves, are diffracted at the double gap 205 and interfere to form amplified wave nodes 225. These wave nodes 225, also referred to as nodes, impinge on a resonance chamber, described as a resonance chamber 235, and are further amplified. The geometry of the double gap 205 and the resonance chamber 235 are coordinated such that a tactile output point can be selectively generated for each sound wave frequency exposure. The resonance chamber 235 improves its function if it is covered with a flexible membrane 270, which can be implemented, for example, as a flexible display film. For example, the double gap 205 is applied by printing in or onto the sound barrier 200.Alternatively, for example, in the case of a thick plate, a vacuum sound wave barrier can be introduced using a depth-adjustable laser focal point. For example, the carrier medium 265 has mechanisms for filtering sound waves 220. Furthermore, the flexible functional element 260 is formed as a flexible display, which is, for example, laminated onto the carrier medium 265. The resonance chamber 235 is spanned, for example, by the functional film 270 as a membrane, thus forming a resonance hollow body.

[0038] Furthermore, the double slit 205 is arranged in the sound barrier 200, also referred to as a sound wave barrier. As the sound waves 220 pass through, they are diffracted and interfere with each other to form additive wave nodes 225 and canceling wave nodes 230. Wave crests 245 and wave troughs 250 form on the surface of the functional element 260. A wave crest 245, for example, sets the resonance chamber 235 into a natural oscillation 240. The further amplified natural oscillation 240 at the membrane 270 transmits the tactile stimulus. Not shown in this embodiment is a laser process that precisely introduces and / or prints a sound wave barrier by setting a focal point on the carrier medium 265.

[0039] Fig. 3 shows a schematic representation of an embodiment of a wayfinding device 110. The Fig. 3 described signposting device 110 is similar to that in Fig. 2 and can be implemented, for example, for a vehicle and / or for a display device as shown in Fig. 1. According to this exemplary embodiment, the wayfinding device 110 additionally has at least one further resonance chamber 300 laterally offset from the resonance chamber 240, which is designed to amplify interfered sound waves through natural oscillations of the further resonance chamber 300 in order to generate further vibrations, in particular wherein the vibrations and the further vibrations are emitted in a wave-like manner in order to point the way. Analogously, the wayfinding device 110 has a plurality of additional resonance chambers 305, all of which are arranged at equal distances from one another according to this exemplary embodiment. Furthermore, the functional element 260 and the functional film 270 are flexibly shaped. According to this exemplary embodiment, the sound barrier 200 likewise has at least one further double gap 310 laterally offset from the double gap 205.The additional double gap 310 also has an additional first opening 315 and a further second opening 320 arranged adjacent to the additional first opening 315. The additional double gap 310 is designed to diffract sound waves and to cause interference between the diffracted sound waves. According to this exemplary embodiment, the additional double gap 310 is arranged at the level of the additional resonance chamber 300. Analogously, the sound barrier 200 additionally has, in particular, a plurality of double gaps 325, each of which is arranged at the level of the plurality of additional resonance chambers 305.

[0040] According to this exemplary embodiment, a functional section is shown in which sound waves 220 generate a tactile stimulus perceptible by the user at a specific position. Consequently, the user can follow the tactile stimulus using the wave crests 245. According to one exemplary embodiment, it is also possible to dimension the double gap 205 differently.

[0041] Fig. 4 shows a schematic representation of an embodiment of a wayfinding device 110. The Fig. 4 is similar to the signposting device 110 shown in Fig. 3 described wayfinding device 110. According to this embodiment, a direction of movement 400 of the sensing element 255 is shown, which according to this embodiment is arranged in the region of one of the additional resonance chambers 305. For example, the user's sensing element 255 is guided in the direction of the resonance chamber 235, 300, 305 closest to it using the vibrations and the natural oscillation 240. Furthermore, according to this embodiment, the functional element is not shown. However, it is assumed that the wayfinding device 110 according to this embodiment, as well as in at least one of the Fig. 2 to 3 can be realized with the functional element.

[0042] For example only, the direction finding device 110 according to this embodiment is subjected to a frequency of 128 Hz. The resonance chamber 235, which is used for example in Fig. 3 emitted a tactile stimulus at 64 Hz, was dimensioned accordingly for the 64 Hz frequency. For example, at a frequency of 96 Hz, the resonance chamber 235 is not set into natural oscillation. In contrast, a tactile stimulus is emitted to one of the additional resonance chambers 305 at a frequency of 128 Hz and thus transferred from the resonance chamber 235 to the additional resonance chamber 305. A vibration sensation or, for example, a buzzing sound can be perceived in a range of a few Hertz to a few hundred Hertz.

[0043] What's special about this is that a sound wave frequency is continuously traversed within a frequency spectrum, and a resonant hollow body, here the additional resonance chamber 305, emits the tactile stimulus. A perceptible elevation is, for example, 1 µm (1 mm = 1000 µm) on a highly smooth surface, so that a vibration sensation can be distinguished from a sense of touch. The sense of touch is most effective at these frequencies, as it determines how long a vibration remains perceptible at these frequencies as the amplitude decreases.

[0044] Fig. 5 shows a schematic representation of an embodiment of a wayfinding device 110. The Fig. 5 is similar to the signposting device 110 shown in Fig. 4. According to this embodiment, the sound waves 220 are emitted in such a way that one of the additional resonance chambers 305 is set into natural oscillation 240.

[0045] According to this embodiment, the frequency of the application is, for example, 128 Hz, so that the tactile stimulus is emitted at one of the additional resonance chambers 305. The tactile stimulus is not perceptible to any relevant extent at the membranes of the resonance chambers 235, 300, or at one of the additional resonance chambers 305.

[0046] Fig. 6 shows a schematic representation of an embodiment of a wayfinding device 110. The Fig. 6 is similar to the signposting device 110 shown in Fig. 4. According to this embodiment, a further direction of movement 600 of the sensing element 255 is shown, which according to this embodiment is arranged in the region of the further resonance chamber 300. The further direction of movement 600 according to this embodiment runs opposite to that in Fig. 4. This guides the user to the nearest input area.

[0047] According to this embodiment, a further functional characteristic is shown in which a reversal of direction is indicated by the further direction of movement 600. With a frequency of 265 Hz, Fig. 3 and / or Fig. 4 omitted point a tactile stimulus with the characteristic of a returning wave is emitted.

[0048] Fig. Figure 7 shows a schematic representation of different embodiments 700, 705, 710, 715 for a signposting device according to an embodiment. The embodiments 700, 705, 710, 715 can be implemented, for example, in a signposting device as described in one of the Fig. 1 to 6. Just as the double gaps can be shaped differently, it is also possible for the resonance chambers to have different configurations. According to this exemplary embodiment, in particular, configurations 700, 705, 710, 715 are shown as a plurality 720 of resonance chambers in conjunction with different frequencies of the sound waves 220.

[0049] In the plurality 720 of resonance chambers have a small diameter, which react to sound waves 220 with a frequency of, for example, 64Hz.

[0050] In the second embodiment 705, the plurality 720 of resonance chambers has a smaller diameter than the first embodiment 700, which react to sound waves 220 with a frequency of, for example, 256 Hz. Due to the smaller diameter, for example, a distance between any two of the plurality 720 of resonance chambers is simultaneously increased.

[0051] In the third embodiment 710, the plurality 720 of resonance chambers has a larger diameter than the first embodiment 700 and the second embodiment 705, which react to sound waves 220 with a frequency of, for example, 128 Hz. The distance between the individual resonance chambers is thus significantly reduced.

[0052] In the fourth embodiment 715, the plurality 720 of resonance chambers has a smaller diameter than the third embodiment 710, but a larger diameter than the first embodiment 700 and the second embodiment 705, which respond to sound waves 220 with a frequency of, for example, 96 Hz.

[0053] According to this exemplary embodiment, differently dimensioned constellations are shown. A constellation, for example, comprises the carrier medium, the plurality 720 of resonance chambers, i.e., their volume dimensions, and the double gap with its gap spacing and width. A flexible functional film is provided, for example, as a membrane. Each of the configurations 700, 705, 710, 715, also referred to as a constellation, is assigned a different frequency, such as 64 Hz, 96 Hz, 128 Hz, and 256 Hz. The majority of the resonance chambers 720 have different structural dimensions. Alternatively, it is conceivable to output 16 categories, although according to this exemplary embodiment, not all of the possible configurations with regard to their location, constellation, and / or grouping are shown. Alternatively, a comprehensive configuration of symbols is also conceivable.The resonance chambers 720, arranged in a grid, are positioned such that a small area responds to at least two frequencies. Furthermore, different wave directions can be realized only as examples.

[0054] Fig. 8 shows a flowchart of a method 800 according to an embodiment for operating a wayfinding device. The method 800 can be carried out for a wayfinding device as described, for example, in at least one of the Fig. 1 to 6. The method 800 includes a step 805 of outputting sound waves in response to a detection signal, a step 810 of generating a vibration using a natural vibration of the resonance chamber, and a step 815 of providing the vibration to the functional element to indicate the direction to an input area of ​​a display device.

[0055] The procedural steps presented here can be repeated and carried out in a different order than described.

[0056] Fig. 9 shows a block diagram of a device 125 according to an embodiment. According to this embodiment, the device 125 is designed to control or carry out a method for operating a wayfinding device, as described, for example, in Fig. 8. For this purpose, the device 120 comprises, for example, an output unit 900 for outputting sound waves in response to a detection signal 135, a generation unit 905 for generating a vibration using a natural vibration of the resonance chamber, and a provision unit 910 for providing the vibration to the functional element in order to indicate the direction to an input area of ​​a display device.

[0057] Fig. 10 shows a flowchart of a method 1000 according to an embodiment for producing a wayfinding device. The method 1000 produces a wayfinding device, such as is described, for example, in one of the Fig. 1 to 6. The method 1000 comprises a step 1005 of providing, a step 1010 of arranging, a step 1015 of applying or introducing, and a step 1020 of arranging. In step 1005 of providing, the carrier medium is provided with a resonance chamber side and a sound barrier side opposite the resonance chamber side. In step 1010 of arranging, at least one resonance chamber is arranged on the resonance chamber side of the carrier medium. In step 1015 of applying or introducing, the sound barrier is applied or introduced into the carrier medium on the sound barrier side of the carrier medium. In step 1020 of arranging, the functional element is arranged on the resonance chamber side in order to produce the wayfinding device.

[0058] Fig. 11 shows a block diagram of a device 1100 according to an embodiment. The device 1100 is designed, for example, to carry out or control a method for producing a wayfinding device, as described, for example, in Fig.10. For this purpose, the device 1100 has, for example, a provision unit 1105, an arrangement unit 1110, an application unit 1115, and a further arrangement unit 1120. The provision unit 1105 is designed, for example, to provide the carrier medium with a resonance chamber side and a sound barrier side opposite the resonance chamber side. The arrangement unit 1110 is designed to arrange at least one resonance chamber on the resonance chamber side of the carrier medium. The application unit 1115 is designed to apply or introduce the sound barrier into the carrier medium on the sound barrier side of the carrier medium, and the further arrangement unit 1120 is designed to arrange the functional element on the resonance chamber side in order to produce the wayfinding device.

[0059] The procedural steps presented here can be repeated and carried out in a different order than described.

[0060] If an embodiment includes an “and / or” link between a first feature and a second feature, this should be read as meaning that the embodiment according to one embodiment includes both the first feature and the second feature and according to another embodiment includes either only the first feature or only the second feature.

Claims

[1] A signposting device (110) for tactilely indicating a direction to an input area (115), the signposting device (110) having the following features: - a sound barrier (200) having at least one double gap (205), wherein the double gap (205) has a first opening (210) and a second opening (215) arranged adjacent to the first opening (210), and wherein the double gap (205) is designed to diffract sound waves (220) and to cause interference of the diffracted sound waves (220); - a resonance chamber (235) arranged adjacent to the sound barrier (200) and designed to amplify interfered sound waves (220) by a natural oscillation (240) to provide a vibration; and - a flexible functional element (260), wherein the sound barrier (200) and the functional element (260) are arranged on opposite sides, wherein the functional element (260) is arranged adjacent to the resonance chamber (235) and is designed to point the direction to the input area (115) using the vibration. [2] A wayfinding device (110) according to claim 1, comprising a carrier medium (265) for conducting the sound waves (220) from the double gap (205) to the resonance chamber (235), in particular wherein the carrier medium (265) is designed to filter sound waves (220). [3] Signposting device (110) according to one of the preceding claims, wherein the functional element (260) is formed as a display film of a display device (105). [4] A wayfinding device (110) according to any one of the preceding claims, comprising an actuator for providing sound waves (220) in the direction of the sound barrier (200). [5] A wayfinding device (110) according to any one of the preceding claims, wherein a shape and / or a dimension of the openings of the double gap (205) differs. [6] Wayfinding device (110) according to one of the preceding claims, with at least one further resonance chamber (300) laterally offset from the resonance chamber (235), which is designed to amplify interfered sound waves (220) by natural vibrations (240) of the further resonance chamber (300) in order to generate further vibrations, in particular wherein the resonance chamber (235) and the further resonance chamber (300) are designed to output the vibrations and the further vibrations in a wave-like manner in order to show the way. [7] Wayfinding device (110) according to one of the preceding claims, wherein the sound barrier (200) has at least one further double gap (310) laterally offset from the double gap (205), wherein the further double gap (310) has a further first opening (315) and a further second opening (320) arranged adjacent to the further first opening (315), and wherein the further double gap (310) is designed to diffract sound waves (220) and to cause interference of the diffracted sound waves (220). [8] Wayfinding device (110) according to one of the preceding claims, wherein the resonance chamber (235) is spanned, enclosed and / or surrounded by a membrane (270) which is in particular formed as a functional film. [9] Display device (105) for a vehicle (100) having the following features: - a display area (120) for displaying an image and / or an input area (115) for entering data; and - a wayfinding device (110) according to one of the preceding claims. [10] A method (800) for operating a wayfinding device (110) according to any one of claims 1 to 8, wherein the method (800) comprises the following steps: - outputting (805) sound waves (220) in response to a detection signal (135); - generating (810) a vibration using a natural vibration (240) of the resonance chamber (235); and - Providing (815) the vibration to the functional element (260) to indicate the direction to an input area (115) of a display device (105). [11] A method (1000) for manufacturing a wayfinding device (110) according to any one of claims 2 to 8, wherein the method (1000) comprises the following steps: - Providing (1005) the carrier medium (265) with a resonance chamber side (267) and a sound barrier side (268) opposite the resonance chamber side (267); - arranging (1010) at least one resonance chamber (235) on the resonance chamber side (267) of the carrier medium (265); - applying (1015) or inserting the sound barrier (200) into the carrier medium (265) on the sound barrier side (267) of the carrier medium (265); and - arranging (1020) the functional element (260) on the resonance chamber side (267) to produce the guidance device (110). [12] Device (125; 1100) which is arranged to carry out and / or control the steps (805, 810, 815; 1005, 1010, 1015, 1020) of one of the methods (800; 1000) according to one of claims 10 or 11 in corresponding units (900, 905, 910; 1105, 1110, 1115, 1120). [13] Computer program which is configured to execute and / or control the steps of one of the methods (800; 1000) according to one of claims 10 or 11. [14] A machine-readable storage medium on which the computer program according to claim 13 is stored.

Images