JP4822109B2 - Speed display device for vehicle - Google Patents

Description

  The present invention relates to a vehicle speed display device that displays the speed of a vehicle.

  A meter device is installed on an instrument panel in a vehicle, and a speedometer is mounted on the meter device. A speedometer displays the running speed to the driver, detects the speed limit, displays the speed limit, the safety speed, etc. to the driver, and calls for safe driving (for example, Patent Document 1). ).

  The following two methods are employed when the traveling speed and the speed limit are displayed in a superimposed manner. (1) The traveling speed is displayed by an analog meter, and the speed limit is displayed at a different location. (2) The gauge portion of the analog meter that displays the traveling speed is distinguished from the normal display so that the speed limit portion can be recognized.

Japanese Patent Laid-Open No. 5-225296

  However, in the method (1), it is necessary to look at the analog meter that displays the traveling speed and the display unit for the speed limit that is separated from the analog meter. In the method (2), since the speed limit changes depending on the road on which the vehicle is traveling, the point to be watched moves.

  The subject of this invention is providing the vehicle speed display apparatus which makes it easy to catch whether the present traveling speed is over the speed limit.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, a vehicle speed display device of the present invention comprises:
Vehicle speed acquisition means for acquiring the vehicle speed of the vehicle;
Speed limit acquisition means for acquiring a speed limit of a traveling road while traveling;
A dial including an arcuate vehicle speed scale for indicating the vehicle speed and a vehicle speed display number and a pointer arranged at the center of the arc can be rewritten and displayed as an image, and the vehicle speed scale corresponding to the speed limit is displayed. The dial is displayed so that the distance between the speed scales is maintained before and after the change, even when the speed limit changes, and the dial is displayed in an analog manner. Display means for rotating and displaying the vehicle speed;
It is characterized by providing.

According to the above configuration, the display means displays the vehicle speed scale corresponding to the speed limit at a predetermined position where the driver can easily recognize . If the speed limit during traveling varies in its, because the vehicle speed graduation in correspondence with the speed limit in accordance with the speed limit is displayed at a predetermined position, the driver, the vehicle speed graduation always displayed in place It can be recognized that it is the current speed limit.

  The dial is displayed so that the vehicle speed scale is arcuate and the vehicle speed scale corresponding to the speed limit is set at a predetermined position of the arc. According to the above configuration, since the display means displays the dial with the vehicle speed scale corresponding to the speed limit set at a predetermined position of the arc, the vehicle speed scale corresponding to the speed limit is always displayed at the same position, and the driver Can make it easier to recognize the speed limit.

The predetermined position where the vehicle speed scale corresponding to the speed limit is displayed can be configured to be the upright position of the pointer . With this configuration, the driver can instantly recognize the speed limit of the traveling road while traveling by always shifting the viewpoint to the upright position of the pointer .

  The display means may be configured to display the vehicle speed scale by omitting a scale higher than a predetermined speed. Since the high-speed scale is not normally used, displaying the vehicle speed scale by omitting the vehicle speed scale in such a region may make the dial feel clear and make it easier for the driver to recognize the speed limit. it can.

  The display means may be configured to display the dial face by fixing the zero point of the vehicle speed scale and the maximum speed at predetermined positions. When the zero point and the maximum speed move, it becomes difficult to recognize instantly. However, when the zero point and the maximum speed are fixed and displayed as in the above configuration, the driver recognizes where the point is displayed. It's easy to do.

  The display means displays the vehicle speed display number with an odd number of tens places as a dial when the tens of the speed limit is odd, and displays the vehicle speed with an even number of tens places when the tens place of the speed limit is an even number. It can also be configured to display numbers as dials. According to the above configuration, the speed limit can be easily recognized, and other vehicle speed display numbers can be easily recognized.

  The display means may be configured to display the sign image on the dial. By configuring in this way, the driver can easily recognize the speed limit because the driver sees the image of the sign at the same time by looking at the vehicle speed display device.

  The display means can also be configured to display a warning display section that gives a warning by coloring an overspeed area above the speed limit on the dial. By displaying a warning display section for coloring and warning the overspeed area above the speed limit on the dial, the driver can easily recognize the overspeed area.

  Further, the display means may be configured to display the warning display portion in different colors. The color classification can be performed by, for example, multicolor classification or gradation classification. Alternatively, the display means may display the warning display portion in gradation. The gradation display can be performed in mono-color or multi-color. By configuring in this way, the overspeed area becomes conspicuous, and since the color is different in the overspeed area, a psychological effect for suppressing the overspeed can be obtained.

  The display means displays a display section within the speed limit that indicates a colored area below the speed limit on the dial. By comprising in this way, it can make it easier to recognize whether it is within a speed limit or more than a speed limit.

  The speed limit acquisition means includes travel road determination means for determining the travel road of the vehicle, and can be configured to output a speed limit suitable for the determined travel road to the display means. According to the above configuration, since the traveling road determination unit is included, it is possible to determine the traveling road during traveling and output the speed limit to the display unit.

  Further, the speed limit acquisition means may have a speed limit database storing road speed limits, and may be configured to acquire the speed limit of the traveling road from the speed limit database and output it to the display means. By having the speed limit database, it is possible to acquire the speed limit on the traveling road while traveling and display it on the vehicle speed display device.

  The speed limit acquisition means includes a navigation device, and the road determination means can be configured to determine a traveling road based on position information from the navigation device. Moreover, you may comprise a road determination means to determine a traveling road based on the information from the beacon installed in the road or the roadside sensor. Further, the speed limit acquisition means has image recognition means for recognizing video from an in-vehicle camera mounted on the vehicle, and the road determination means is configured to determine the traveling road based on information from the image recognition means. You can also As described above, the vehicle speed display device can acquire the current position and the speed limit of the traveling road based on the information from the navigation device, the beacon, the roadside sensor, the video of the vehicle-mounted camera, and the like.

  The display unit of the display means can be configured by a display device. As the display device, for example, EL, VFD, CRT, SED, plasma display or the like can be used. Thereby, the warning display part of the dial, the display part within the speed limit, etc. can be displayed in mono-color or multi-color, or gradation display can be made easier for the driver to recognize.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a meter device 1 according to a first embodiment of a vehicle speed display device of the present invention. The meter device 1 includes a display unit 2 that displays a speedometer 3 indicating the traveling speed of the vehicle, a warning display lamp unit 8 that prompts the driver to warn by lighting of lamps, a meter unit 9, and the like.

  The display unit 2 includes a display device (color liquid crystal 2a and backlight 2b), and displays various information such as a speedometer 3, a tachometer 4, an ODO / TRIP meter 5, a shift position 6, and a clock 7. Moreover, you may comprise so that external temperature, average fuel consumption, a map for navigation, and guidance information may be displayed. As a display device constituting the display unit 2, for example, EL, VFD, CRT, SED, plasma display or the like can be used.

  The warning indicator lamp unit 8 has lamps such as a hydraulic warning and a brake warning lamp, and warns the driver by turning on and off the lamp.

  The meter unit 9 includes a fuel display meter 9a, a water temperature display meter 9b, and the like, and displays each state to the driver by a pointer 43 (see FIG. 5).

  FIG. 2 shows a block diagram of the meter device 1 of the present invention. The meter device 1 includes a display unit 2 constituted by a color liquid crystal 2a and a backlight 2b, a warning indicator lamp unit 8, a meter unit 9, and the like, and these are connected to a control device 11. The meter device 1 also includes a speed limit obtaining unit 12 that obtains a speed limit of the traveling road. The speed limit obtaining unit 12, an in-vehicle LAN 18, and a control device 19 in the vehicle are connected to the control device 11.

  The control device 11 is configured as a normal computer, and includes a known CPU 13, ROM 14, RAM 15, I / O 16, and a bus line 17 for connecting these configurations.

  The CPU 13 controls the program and data stored in the ROM 14 and RAM 15. The ROM 14 stores an operating system (hereinafter referred to as OS) 14s and a display control program 14p operating on the OS 14s. The RAM 15 is provided with an OS work memory 15s for the OS 14s, and the display control program 14p operates on the OS 14s with the display control program work memory 15p as a work area.

  The speed limit acquisition means 12 has a function of acquiring the speed limit of the traveling road that is running. FIG. 3 shows a configuration example of the speed limit acquisition means 12. The speed limit acquisition unit 12 includes a microcomputer and includes a speed limit acquisition control unit 21 that calculates the speed limit. The speed limit acquisition control unit 21 is connected to the in-vehicle camera 28 and the image recognition means 29 and is also configured to receive signals from an external beacon 26 and a roadside sensor 27 installed on the traveling road. . Furthermore, a navigation device 31 is also connected to the speed limit acquisition control unit 21.

  The speed limit acquisition control unit 21 includes a position information acquisition unit 22, a road determination unit 23, a speed limit database 24, and a speed limit calculation unit 25. The position information acquisition unit 22 acquires current position information and traveling road information based on the current position acquired by the navigation device 31.

  Here, the navigation device 31 will be described. The navigation device 31 includes a gyroscope 32, a distance sensor 33, a GPS receiver 34 for detecting the position of the vehicle based on radio waves from a satellite, a map data input device 35 for inputting map data, A position information acquisition control unit 36 to be connected is provided.

  The gyroscope 32, the distance sensor 33, and the GPS receiver 34 for the GPS that detects the position of the vehicle based on the radio wave from the satellite each have an error of different nature, and therefore are supplemented by a plurality of sensors, respectively. While being used, it is configured to detect the current position. Depending on the accuracy, a part of the sensors described above may be used, and further, a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.

  The map data input unit 35 is a device for inputting various data including so-called map matching data for improving the accuracy of position detection and road data representing road connections from a storage medium. As a storage medium, a CD-ROM, DVD, or hard disk drive (hereinafter referred to as HDD) is generally used because of the amount of data, but other media such as a memory card may be used.

  The position information acquisition control unit 36 is configured as a normal computer, and includes a well-known CPU, ROM, RAM, I / O, and a bus line connecting these configurations, and the gyroscope 32. Based on information from the distance sensor 33 and the GPS receiver 34, the current position of the vehicle is acquired and output to the position information acquisition unit 22 of the speed limit acquisition control unit 21. Based on the output of the current position information from the navigation device 31, the position information acquisition unit 22 of the speed limit acquisition control unit 21 acquires the current position.

  The road determination unit 23 determines the type of the traveling road based on the current position from the position information acquisition unit 22 and the road traffic information from the beacon 26 and the roadside sensor 27 installed on the traveling road. Alternatively, the type of the traveling road is determined based on information obtained by recognizing the video of the in-vehicle camera 28 by the image recognition unit 29. That is, based on these pieces of information, it is determined whether the road is an expressway or a general road, and if it is a national road or the like, what number line it is.

  The speed limit database 24 stores the legal speed limit of the traveling road. The road determination means 23 acquires the legal speed limit on the traveling road that is running from the speed limit database 24.

  The speed limit calculation unit 25 acquires the speed limit of the traveling road while traveling from the road determination means 23 and the speed limit database 24. Alternatively, the speed limit sign on the travel road is read by the image recognition means 29 from the in-vehicle camera 28 and the speed limit is obtained, or the speed limit is obtained from the sign of the travel road name on the travel road (such as “National Route 1”). May be calculated.

  With the above configuration, when the control device 11 determines that the vehicle is traveling based on information from the in-vehicle LAN 18 and the control device 19 in the vehicle, the control device 11 displays the traveling speed on the display unit 2 and from the speed limit obtaining unit 12. Get the speed limit and display the speed limit.

  The speed limit display process will be described with reference to FIG. The CPU 13 of the control device 11 determines whether the vehicle is traveling based on information from the in-vehicle LAN 18 and the control device 19 in the vehicle (S1). If the vehicle is running (S1: Yes), the CPU 13 of the control device 11 requests the speed limit obtaining means 12 for the speed limit of the running road (S2).

  Specifically, the speed limit acquisition means 12 is based on the current position information acquired by the position information acquisition unit 22 from the navigation device 31, information from the beacon 26, the roadside sensor 27, and the image recognition means 29. The travel speed is determined, the speed limit calculation unit 25 acquires the speed limit from the speed limit database 24, and outputs the speed limit to the control device 11 of the meter device 1.

  If the speed limit acquisition means 12 cannot acquire or calculate the speed limit and the speed limit is not output, and if the CPU 13 of the control device 11 cannot acquire the speed limit (S3: No), the CPU 13 is as shown in FIG. In the standard state, the speedometer 3 is displayed on the display unit 2 (S4). That is, the CPU 13 displays the dial 40 on the display unit 2 so that the vehicle speed scale 41 has an arc shape so that the zero point at the speed of 0 km / h is a predetermined position at the lower left and the maximum speed is at the lower right. . And according to the dial 40, the pointer | guide 43 is displayed so that a vehicle speed may be shown.

  The dial 40 and the hands 43 are displayed by the color liquid crystal 2a. That is, on the display unit 2 of the meter device 1, a vehicle speed scale 41 and a vehicle speed display number 42 are arranged and displayed in the center of the display unit 2 as a meter image of the speedometer 3, and a pointer is displayed at the center of the arc. 43 is displayed as if it was rotatably arranged. The zero point indicating the speed of 0 km / h is arranged at the lower left and is drawn so that the maximum speed is at the lower right in the clockwise direction. On the vehicle speed scale 41, vehicle speed display numbers 42 are also displayed at predetermined intervals. The indicator 43 is displayed in an analog manner so as to indicate the vehicle speed by instructing the vehicle speed scale 41 and the vehicle speed display numeral 42. When the CPU 13 cannot acquire the speed limit, a standard state display in which the speed limit is not displayed with the above arrangement is performed.

  If the CPU 13 of the control device 11 can acquire the speed limit from the speed limit acquisition means 12 (S3: Yes), the CPU 13 determines whether the speed limit has been switched from before (S5). If the speed limit has been switched (S5: Yes), the dial 40 of the speedometer 3 is redrawn with the vehicle speed scale 41 for the new speed limit set at a predetermined position on the arc, and displayed as shown in FIG. 1 (S6). ). If the speed limit is not switched (S5: No), it is updated and drawn according to the speed limit of the traveling road (S7).

  A display example of the speedometer 3 when the CPU 13 of the control device 11 acquires the speed limit will be described more specifically with reference to FIG. FIG. 6 shows the case where the speed limit is fixed to the upper part of the meter. When the speed limit is acquired as 50 km / h, the CPU 13 draws the vehicle speed scale 41 so that the vehicle speed display numeral 42 is “50” at the upper part of the meter as shown in FIG. And according to the vehicle speed scale 41 of the speedometer 3, the pointer 43 is drawn so as to indicate the traveling speed of the vehicle. The CPU 13 displays on the dial 40 a warning display unit 44 that gives a warning by coloring an overspeed area that exceeds the speed limit. This further facilitates the driver's recognition of the speed limit, and also has a function as a warning when the vehicle travels at a speed higher than the speed limit.

  In addition, when the speed limit is acquired as 100 km / h, the CPU 13 of the control device 11 makes the vehicle speed scale 41 so that “100” of the vehicle speed scale 41 becomes the upper part of the speedometer 3 as shown in FIG. Draw. By displaying the vehicle speed scale 41 and the vehicle speed display number 42 corresponding to the speed limit on the top of the speedometer 3 in this way, the driver recognizes the speed limit because the speed limit is always displayed at a constant place. Cheap.

  Even if it is configured to display the speed limit (50 km / h in the figure) on the left side of the meter as shown in FIG. 7, the driver always displays the speed limit because the speed limit is always displayed at a fixed location. The effect that it is easy to recognize is acquired. As described above, by displaying the speed limit at a fixed position, the driver can recognize that the same position always indicates the speed limit, so that the driver can easily recognize the speed limit.

  FIG. 8 shows a case where a high-speed scale (scale exceeding 140 km / h in the figure) is omitted when the speed limit is moved upward. The high speed region is unnecessary and may be omitted. By doing in this way, the dial 40 can be displayed in a clean feeling, and the driver can more easily recognize the speed limit and the like.

  The case where the speed limit is fixed at the top and the zero point and the maximum speed are fixed at predetermined positions will be described with reference to FIG. As shown in FIG. 9A, when the zero point is fixed to the lower left, the maximum speed of 180 km / h is fixed to the lower right, and the speed limit is 50 km / h, the vehicle speed scale 41 from 0 to 50 is The vehicle speed scale 41 from 50 to 180 is displayed in a rough manner. Since the zero point and the maximum speed are fixed at predetermined positions, the driver can easily recognize the dial 40.

  However, since it is not necessary to display the high-speed area, as shown in FIG. 9B, the display of the high-speed area is omitted and, for example, the vehicle speed scale 41 is not filled as a display up to “140”. It may be.

  As shown in FIG. 10 (a), when the scale is clogged, the vehicle speed scale 41 or the vehicle speed display number 42 may be thinned and displayed. By doing in this way, the dial 40 is displayed in a refreshing feeling, and the driver can easily recognize the dial 40.

  As shown in FIG. 10 (b), when the tens place of the speed limit is an odd number, the vehicle speed display number 42 having an odd number of the tens place may be displayed as the dial 40. By doing in this way, the vehicle speed display number 42 corresponding to the speed limit can be clearly displayed, and the driver can easily recognize the dial 40.

  As shown in FIG. 10 (c), an image of the sign 45 matched to the speed limit of the traveling road that is running may be displayed on the dial 40. By doing so, the driver can more clearly recognize the speed limit of the traveling road.

  Further, as shown in FIG. 11 (a), the warning display unit 44 is colored with a different color, for example, exceeding 20 km / h and beyond (the figure shows the difference in coloring depending on the density of the points). You may comprise. The area exceeding 20 km / h is displayed in a different color from the area below it, so that a psychological effect of suppressing traveling exceeding 20 km / h can be expected. Further, it may be displayed with different gradations. As shown in FIG. 11 (b), the area exceeding the speed limit of the warning display unit 44 is gradation (in the figure, gradation is shown by the change in shading of the points. This can be done in mono-color or multi-color). A similar psychological effect can be expected even if displayed by.

  As shown in FIG. 11 (c), an in-limit speed display unit 46 may be displayed by coloring a region below the limit speed. As a result, the driver can more clearly recognize whether the vehicle is within the speed limit range or over the speed limit range.

  A case where the speed limit of the traveling road is switched while the vehicle is traveling will be described. FIG. 12 shows a case where the speed limit is switched from 50 km / h to 100 km / h. As shown in FIG. 12A, when the speed limit is 50 km / h, the speed limit “50” is drawn at the top of the arc. At this time, when the speed limit is switched to 100 km / h, as shown in FIG. 12 (b), the display of the warning display section 44 changes to an area where the speed limit is “100” or more, and FIG. As shown in b) and FIG. 12C, the vehicle speed scale 41 and the vehicle speed display number 42 corresponding to the speed limit “100” gradually move to the upper part of the speedometer 3. By changing the display in this way, it is possible to prevent the driver from misidentifying the speed limit and the vehicle speed even when the speed limit is switched.

  FIG. 13 shows another embodiment of the dial 40 of the speedometer 3. FIG. 13A shows a case where the speed limit is 50 km / h, and “50” corresponding to the speed limit is drawn in the center in the left-right direction. That is, the vehicle speed scale 41 is drawn linearly from the 0 point to the speed limit “50” from the lower left to the upper right center, and further from the center to the right in the left-right direction. . When the speed limit is switched from 50 km / h to 100 km / h, the vehicle speed scale 41 is rewritten so that the speed limit “100” is in the center in the left-right direction, as shown in FIG. It is done. In this way, by always displaying the vehicle speed scale 41 corresponding to the speed limit at a predetermined position (in the present embodiment, the central portion in the left-right direction), if the driver sees the position, the speed limit 41 is limited. The speed can be recognized immediately.

  Also in the speedometer 3 in which the vehicle speed scale 41 shown in FIG. 13 is displayed in a straight line, the display like the speedometer 3 in the first to sixth embodiments in which the vehicle speed scale 41 is displayed in an arc shape can be performed. This makes it easier for the driver to recognize the speed limit.

  As described above, the meter device 1 is configured to have the display unit 2 capable of rewriting and displaying the dial 40 and the pointer 43 including the vehicle speed scale 41 for indicating the vehicle speed and the vehicle speed display numeral 42 as an image, The display unit 2 displays the dial 40 with the vehicle speed scale 41 corresponding to the speed limit in a predetermined position and displays the dial 43 in an analog manner to indicate the vehicle speed. Speed can be easily recognized. In addition, by displaying a warning display section 44 that gives a warning by coloring a region where the speed exceeds the speed limit on the dial 40, it is possible to make it easier for the driver to grasp whether or not the current traveling speed is exceeded. .

The figure which shows the meter apparatus as one Example of this invention. The block diagram which shows the structure of the meter apparatus of FIG. The block diagram which shows a speed limit acquisition means. The flowchart explaining the display process of a speedometer. The figure which shows the example of a display of the standard state of a speedometer. The figure which shows the example of a display in the case of fixing a speed limit to the upper part of a speedometer. The figure which shows the example of a display in the case of fixing a speed limit to the left part of a speedometer. The figure which shows the example of a display in the case of omitting the display of a high-speed area | region. The figure which shows the example of a display in the case of fixing 0 point and the maximum speed. The figure which shows the example of a device on a display. The figure which shows the example of a display of a warning display part and the display part within a speed limit. The figure which shows an example of the change method of a display when a speed limit switches. The figure which shows the other Example of the dial of a speedometer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Meter apparatus 2 Display part 3 Speedometer (Vehicle speed display apparatus)
11 Control device 12 Speed limit acquisition means 13 CPU
14 ROM
15 RAM
21 speed limit acquisition control unit 22 position information acquisition unit 23 road determination means 24 speed limit database 25 speed limit calculation unit 31 navigation device 36 position information acquisition control unit 40 dial 41 vehicle speed scale 42 vehicle speed display number 43 pointer 44 warning display unit 45 Sign 46 Speed limit display

Claims (15)

Vehicle speed acquisition means for acquiring the vehicle speed of the vehicle;
Speed limit acquisition means for acquiring a speed limit of a traveling road while traveling;
A dial including an arcuate vehicle speed scale for indicating the vehicle speed and a vehicle speed display number and a pointer arranged at the center of the arc can be rewritten and displayed as an image, and the vehicle speed scale corresponding to the speed limit is displayed. The dial is displayed so that the distance between the speed scales is maintained before and after the change, even when the speed limit changes, and the dial is displayed in an analog manner. Display means for rotating and displaying the vehicle speed;
A vehicle speed display device comprising:   2. The vehicle speed display device according to claim 1, wherein the display unit displays the vehicle speed scale by omitting a scale faster than a predetermined speed.   3. The vehicle speed display device according to claim 1, wherein the display unit displays the dial with the zero point and the maximum speed of the vehicle speed scale fixed at predetermined positions. The display means displays the vehicle speed display number with an odd tens place as the dial when the tens place of the speed limit is an odd number, and displays a tens place when the tens place of the speed limit is an even number. The vehicle speed display device according to any one of claims 1 to 3, wherein the vehicle speed display number is an even number as the dial . 5. The vehicle speed display device according to claim 1 , wherein the display unit displays a sign image on the dial . 6. The vehicle speed display device according to claim 1, wherein the display unit displays a warning display unit that gives a warning by coloring an overspeed area that is equal to or higher than the speed limit on the dial . 7. The vehicle speed display device according to claim 6 , wherein the display means displays the warning display portion in different colors . The speed display device for a vehicle according to claim 6 or 7 , wherein the display means displays the warning display portion in gradation . 9. The vehicle speed display device according to claim 1, wherein the display unit displays an in-limit speed display unit that colors and displays an area of the dial speed or less on the dial . 9. The speed limit acquisition means includes road determination means for determining the traveling road of the vehicle,
The vehicle speed display device according to any one of claims 1 to 9, wherein the speed limit suitable for the determined travel road is output to the display means . The said speed limit acquisition means has a speed limit database in which the speed limit of the road was memorize | stored, The said speed limit of the said traveling road is acquired from the speed limit database, and it outputs to the said display means . Vehicle speed display device. The speed limit acquisition means has a navigation device,
The vehicle speed display device according to claim 10 or 11 , wherein the road determination means determines the travel road based on position information from the navigation device. The vehicle speed display device according to any one of claims 10 to 12, wherein the road determination means determines the travel road based on information from a beacon or a roadside sensor installed on the road . The speed limit acquisition means includes image recognition means for recognizing video from a vehicle-mounted camera mounted on a vehicle,
The vehicle speed display device according to any one of claims 10 to 13, wherein the road determination unit determines the travel road based on information from the image recognition unit . The vehicle speed display device according to any one of claims 1 to 14, wherein a display unit of the display means is configured by a display device.

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