JPH1116091A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain desired information without being confused or failing to recognize picture information by precisely controlling easily recognizable picture information display according to the situation of traveling and environment or the like. SOLUTION: This display device is provide with inputting means 8 and 9 for inputting vehicle traveling situation, environment information, and individual information, and a controlling means 2 for calculating a correction coefficient based on the traveling situation, environment information, and individual information, and changing the plural picture information amounts of luminance, contrast, color difference, and spatial frequencies being the optical characteristics of display, and the size and number of characters or icons as the design of display while they are linked according to the correction coefficient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle display device for displaying, for example, map information and vehicle information.

[0002]

2. Description of the Related Art As a conventional vehicle display device, for example, there is a car navigation system as shown in FIG. In FIG. 1, reference numeral 1 denotes a display unit capable of performing color display such as a TFT liquid crystal display or a CRT, 2 denotes a main control unit serving as a control unit for performing arithmetic processing such as display according to various inputs, and 3 denotes a G unit.
A signal input unit 4 for inputting a vehicle position detection signal such as a PS signal, a signal input unit 4 for inputting a traveling state recognition signal such as a vehicle speed signal, a gyro signal, a side brake signal, a shift position signal, Reference numeral 5 denotes a signal input unit for a display brightness switching signal for changing the brightness of the display means screen such as an ON signal of a vehicle width lamp or a headlamp or a measurement result of environmental illuminance. Reference numeral 11 denotes a recording medium such as a CD-ROM that stores information (substantially nationwide information) on terrain, roads, buildings, and the like. Reference numeral 6 denotes a data reading unit that reads data from the recording medium 11. Then, based on the own vehicle position detection signal and the traveling state recognition signal, the own vehicle position such as the current vehicle latitude and longitude is obtained, and information on the terrain, roads, buildings, etc. near the own vehicle position is recorded on a recording medium. 11 to data reading unit 6
And the main control unit 2 performs arithmetic processing on the display means 1
To be displayed. In consideration of the visibility of the display, the brightness, contrast, and color of the image are changed based on a signal from the display brightness switching signal input unit 5 such as environmental illuminance. FIG.
Is a display example of a vehicle air conditioner having an input mechanism using a touch panel. Like the display screen of the car navigation system, it has image information such as characters and figures and provides information.

[0003]

However, in such a conventional vehicle display device, the amount of information to be provided to occupants such as drivers increases with the advancement of information, while the aging and female driver The variation in image information processing ability on the information receiving side is increasing due to the increase in the number of people, running, environment, etc. There was a problem that it was difficult to provide appropriate information display that was easy to recognize and corresponded.

The present invention has been made in view of such conventional problems, and it is easy for a large number of image observers, including the elderly and women, to recognize an image which is easy to recognize according to the conditions such as running and environment. An object of the present invention is to provide a vehicular display device that can accurately control information display and can easily obtain desired information without confusing or misleading image information.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that at least one of vehicle speed, acceleration, steering angle, environmental illuminance, traffic congestion information, information and type of road, and intersection. Input means for inputting personal information including at least any of driving condition / environment information including driver's and other image observers' age, gender, visual acuity, color vision, driving history, vehicle running history, and input from the input means The at least one correction coefficient is obtained based on the traveling state / environment information and the personal information, and luminance, contrast, color, color difference, spatial frequency, and display design are displayed as optical characteristics according to the correction coefficient. The gist of the present invention is to have a control means for changing a plurality of image information amounts of the size and the number of characters or icons in conjunction with each other. With this configuration, the amount of image information changes smoothly, and an image information display that is easily recognizable to many image observers, including the elderly and women, according to situations such as running and environment.

According to a second aspect of the present invention, there is provided a driving condition / environment information including at least one of a vehicle speed, an acceleration, a steering angle, environmental illuminance, traffic congestion information, road information and type, an intersection, a driver and other image observation. Age, gender, visual acuity, color vision, driving history, vehicle running history, at least one correction coefficient obtained from personal information including at least one of brightness, contrast, color,
The gist is that a plurality of image information amounts such as a color difference, a spatial frequency, and the size and the number of characters or icons as display designs are changed in conjunction with each other. With this configuration, input of driving situation / environment information and personal information
Specifically, the control achieved by the input means, and the control of changing a plurality of image information amounts in conjunction with each other, is specifically achieved by the control means, and is similar to the operation of the invention of claim 1 above. Action is obtained.

According to a third aspect of the present invention, in the vehicle display device according to the first aspect, a manual adjustment capable of generating any value mechanically or electrically in place of or in addition to the input means. The present invention has a mechanism in which a plurality of the image information amounts are changed in conjunction with each other in accordance with an input amount from the manual adjustment mechanism. With this configuration, it is possible to change a plurality of image information amounts in conjunction with each other according to the personal preference of the image observer.

According to a fourth aspect of the present invention, in the vehicle display device according to the first aspect, the correction coefficient is, in relation to the driving condition / environment information, the driving condition / environment information and the image information amount. Is determined from predetermined data such as reading time such as eye gaze measurement, and determined from the linear relationship. With this configuration, the correction coefficient, in relation to the traveling state / environment information, is predetermined data such as a reading time of eye gaze measurement or the like, that is, a traveling state using predetermined data of a person's image information processing capability per unit time. An appropriate value is obtained from the linear relationship between the environment information and the amount of image information.

According to a fifth aspect of the present invention, in the vehicle display device of the first aspect, the correction coefficient is an inverse function of various reaction times in relation to the personal information. The gist of the present invention is that the color and the color vision are obtained by using their inverse functions, and the driving history and the vehicle running history are obtained by using the inverse function of the S-shaped learning function. With this configuration, an appropriate correction coefficient value in relation to personal information is obtained.

According to a sixth aspect of the present invention, in the vehicle display device according to the fourth aspect, instead of the linear relationship, l is used.
The gist is to obtain the correction coefficient in a non-linear relationship using an og function or a power function. With this configuration, an appropriate value of the correction coefficient in relation to the driving situation / environment information can be obtained by a non-linear relation using a log function or the like, which is a function of the psychological quantity of a person.

According to a seventh aspect of the present invention, there is provided the vehicle display device according to the first aspect, wherein the display has optical characteristics such as brightness, contrast, color, color difference, spatial frequency, and characters or icons as display designs. The relationship between the size and the number and the image information amount is as follows: high luminance = high visibility = small image information amount, high contrast = high visibility = small image information amount, high color difference = high visibility = high image information amount, space High frequency = large visibility = small amount of image information, large size of characters and icons = large visibility = small amount of image information, large number of characters and icons = large amount of image information The main point is to change it. With this configuration, when the optical characteristics of the display and the image information amount of the design data are plurally changed in conjunction with each other, the optical characteristics and the relationship between the design data and the image information amount are changed through the above-described parameter through visibility. With such a relationship, the amount of image information can be smoothly changed.

According to an eighth aspect of the present invention, in the vehicle display device according to the first aspect, the driving condition / environment information used for obtaining the correction coefficient is such that the vehicle speed is high → the image information amount is small, and the acceleration is small. Large → small amount of image information, large steering angle → small amount of image information, large environmental illuminance → small amount of image information, heavy traffic → large amount of image information, road information (road width)
The gist is that a large amount of image information is large and a large amount of road information (road curvature) is large, and the amount of image information is small. With this configuration, the traveling state / environment information and the image information amount are changed from the known various measurement results in the above-described relationship, so that the image information display can be easily recognized according to the traveling / environment situation. .

According to a ninth aspect of the present invention, in the vehicle display device according to the first aspect, the size or the thickness of the character or icon as image information is set as a priority when the image information amount is changed. Calculate the reference value such as the average value of the contrast and color difference or the median of the statistical values, and display the value smaller than or smaller than the reference value, and delete the value larger than the larger value. Is the gist. With this configuration, the amount of image information changes reliably and smoothly, and display control of image information that is easy to recognize can be performed.

According to a tenth aspect of the present invention, in the vehicular display device according to the ninth aspect, when the priority order is determined, a predetermined display is input to the driving condition / environment information or the personal information. The point is to change the priority order accordingly. With this configuration, in the case of determining the above-mentioned priority order, in the case of a predetermined display, from the viewpoint of emphasizing operability and the like, even a display item having a value smaller than the reference value is changed and displayed in a large order.

[0015] The invention according to claim 11 is the invention according to claim 10.
In the vehicle display device described above, when the congestion information is input in the air conditioner display while the vehicle is traveling, the priority is changed to increase the display of the inside air / outside air circulation on the air conditioner display screen. With this configuration, as one specific example of changing the priority, when traffic congestion information is input in the air conditioner display while the vehicle is running, the display of the inside air / outside air circulation on the screen is increased. Thereby, easy operability by the touch panel is obtained.

[0016]

According to the first aspect of the present invention, the driving condition / environment information including at least one of the vehicle speed, acceleration, steering angle, environmental illuminance, traffic congestion information, road information and type, and intersection, and the driver are provided. Other image observer ages,
Input means for inputting personal information including at least one of gender, visual acuity, color vision, driving history, and vehicle running history, and at least one correction based on the driving situation / environment information and the personal information input from the input means Coefficient, and according to the correction coefficient, luminance, contrast,
Since a plurality of color, color difference, spatial frequency, and the size and number of character or icon image information as the design of the display are provided in conjunction with control means for changing the amount of image information, many image observations including the elderly and women can be observed. The user is accurately controlled to display image information that is easily recognizable according to the situation such as traveling and environment, so that the image information is not confused or mistaken, and desired information can be easily obtained.

According to the second aspect of the present invention, driving condition / environment information including at least one of vehicle speed, acceleration, steering angle, environmental illuminance, traffic congestion information, road information and type, intersection, and other information such as driver and other information are provided. The age of the image observer,
Gender, visual acuity, color vision, driving history, vehicle running history, at least one correction coefficient obtained from personal information including at least one of the following correction factors optical characteristics of brightness, contrast, color, color difference, spatial frequency, display of Since a plurality of image information amounts of the size and the number of characters or icons as designs are changed in conjunction with each other, there is substantially the same effect as the effect of the first aspect of the present invention.

According to the third aspect of the present invention, there is provided a manual adjustment mechanism capable of mechanically or electrically generating an arbitrary value instead of or in addition to the input means. Since the plurality of image information amounts are changed in accordance with the input amount of the image observer, it is possible to easily change the plurality of image information amounts in accordance with the personal preference of the image observer. For many image observers,
An image information display that can be more easily recognized can be provided.

According to the fourth aspect of the present invention, the correction coefficient is a relation between the traveling condition / environment information and the image information amount, and is a reading time such as a line-of-sight measurement. And the like, and from the linear relationship, an appropriate correction coefficient value in relation to the driving situation / environment information is obtained. Display control can be performed.

According to the fifth aspect of the present invention, the correction coefficient is related to the personal information, the age and gender are inverse functions of various reaction times, the visual acuity and color vision are inverse functions thereof, and the driving is performed. Since the history and the vehicle running history are obtained by using the inverse function of the S-shaped learning function, an appropriate correction coefficient value in relation to personal information is obtained, and is recognized by many image observers including elderly people and women. Display control of image information that is easy to perform can be performed with high accuracy.

According to the present invention, the correction coefficient is obtained by a non-linear relation using a log function or a power function instead of the linear relation.
The correction coefficient in the relationship with the environment information is determined by a non-linear relationship using a log function or the like which is a function of the psychological quantity of a person, and an appropriate value is obtained. It is possible to perform display control of image information that is easy to recognize.

According to the seventh aspect of the present invention, the image information amount includes the brightness, contrast, color, color difference, spatial frequency, and the size and number of characters or icons as display designs, which are optical characteristics of the display. The relationship is high luminance = high visibility = small image information amount, high contrast = high visibility = small image information amount, high color difference = high visibility = small image information amount, high spatial frequency = high visibility = high image information amount Small, large character and icon size = large visibility = small image information amount, large number of characters and icons = large image information amount Is surely changed smoothly, and display control of image information that is easily recognizable to many image observers including elderly people and women can be performed.

According to the eighth aspect of the present invention, the traveling condition / environment information used for obtaining the correction coefficient is such that the vehicle speed is large → the image information amount is small, the acceleration is large → the image information amount is small, and the steering angle is small. Large → Small amount of image information, large environmental illuminance →
The amount of image information is small, traffic congestion is large, the amount of image information is large, the amount of road information (road width) is large, the amount of image information is large, the amount of road information (road curvature) is large, and the amount of image information is small. Since a plurality of them are changed in conjunction with each other, it is possible to provide an easily recognizable image information display according to the traveling and environmental conditions.

According to the ninth aspect of the present invention, as the priority when changing the image information amount, the size of the character or icon as the image information, the character thickness, the contrast, the average value of the color difference, or the statistical value. A reference value such as a median of numerical values is obtained, and a value smaller than the reference value is reduced or deleted, and a value larger than the reference value is displayed larger, so that the amount of image information is surely smooth. And display control of image information that is easy to recognize can be performed.

According to the tenth aspect of the present invention, when the priority order is determined, the priority order of the predetermined display is changed according to the input of the driving situation / environment information or the personal information. , For certain indications,
The change in the priority of the change in the amount of image information slightly sacrifices a smooth change in the amount of image information, but this can be sufficiently compensated for by improving the operability or the like accompanying the change in display.

According to the eleventh aspect, when the traffic congestion information is input in the air conditioner display while the vehicle is running,
The priority is changed to change the shyness /
Since the display of the outside air circulation is enlarged, as one specific example of changing the priority, when traffic congestion information is input in the air conditioner display while the vehicle is running, the display of the inside air / outside air circulation on the screen is enlarged. By doing so, the operability of the touch panel can be improved.

[0027]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. The display device for a vehicle according to the present embodiment is configured to output various input signals such as brightness, chromaticity, contrast, color difference, spatial frequency, and the number and size of characters and icons as image information amounts of information display of a car navigation system or the like. It is intended to improve the recognizability of the display by making it variable by the correction coefficient required based on the base. First, the configuration of the vehicle display device will be described with reference to FIG. 1 that are the same as or equivalent to the blocks in FIG. 4 are denoted by the same reference numerals as those described above, and redundant description will be omitted. In FIG. 1, reference numeral 7 denotes a CD-ROM containing necessary information such as terrain (elevation), roads, buildings, etc. (substantially nationwide information) near a vehicle position, a color table, and a calculation formula corresponding to various inputs. And recording media 8 such as vehicle speed and acceleration, running conditions such as steering angle, environmental illuminance and road congestion, road information indicating the curvature and width of the road, and running environment such as type and the like. A driving situation / environment information input unit (input means) 9 for inputting a signal indicating the environment is an individual for inputting personal information such as age, gender, eyesight, color vision, driving history, driving history of a driver or an occupant. It is an information input unit (input means).

Next, the display control operation of the main control unit 2 on the display means 1 will be described. The current vehicle position is obtained by inputting the vehicle position detection signal and the traveling state recognition signal to the main control unit 2, and information such as the terrain and road near the vehicle position is read from the recording medium 7 by the data reading unit 6. Read with
The arithmetic processing is performed by the main control unit 2 and displayed on the display unit 1.
As an input signal (information) to the main control unit 2, in addition to the display brightness switching signal, the vehicle speed, acceleration, steering angle, There are signals such as traffic congestion information and road information, and personal information from the personal information input unit 9, and the corresponding amounts of image information such as luminance, chromaticity, spatial frequency, and the number and size of characters and icons or their A function formula or the like for calculating the value is recorded on the recording medium 7. According to this relationship, for example, as shown in FIG. 2, it is possible to control the display image information amount 10 and the vehicle traveling situation / environment information 8a and the personal information 9a via the information amount.

Using the information amount model of a known document (“Image information amount and presentation time”, NHK TECHNICAL JOURNAL, vol. 35, no. 1, 1983), characters and icons are said to be 6 to 14 bits. And its additivity holds. further,
It is said that a human has an information processing capacity of 20 to 50 bits per time. From these, if it is determined that the display processing capacity is about half of the normal state in the driving situation or environment, the characters and icons on the screen are reduced by about half. Judgment of information processing ability is based on other well-known documents (Koichi Ozawa, et al., "Driver's Visual Search Patterns Based on Driving Conditions", Journal of the Japan Society of Civil Engineers, Hokkaido Branch, 1988. Masahiro Akutsu: "Use of Car Navigation System" Human Optics ", 1997), etc.
It can be roughly determined by the time and frequency of gaze stop (gaze) on the display. As described above, when the amount of information is controlled by a change in the number of characters or icons, a sharp change in image information occurs. As a method of avoiding this, the smoothness of the image can be improved by linking the brightness, chromaticity, spatial frequency, etc. of the optical characteristics of the display, and the size of the design characters and icons in accordance with the change in the number of characters and icons. The amount of information can be changed. In this case, each optical characteristic, the relationship between the design data and the amount of image information, mediate a parameter called visibility,
Approximately high brightness = large visibility = small information amount, high contrast = large visibility = small information amount, high color difference = large visibility = small information amount, high spatial frequency = large visibility = small information amount, characters and icons Large size = large visibility = small information amount, large number of characters and icons = large information amount. Detailed characteristics (functions)
Can be easily estimated from known data, but the result of re-measurement may be used. Correspondingly, the vehicle running conditions and environment are determined from the known various measurement results as: vehicle speed → small amount of image information, large acceleration → small amount of image information, large steering angle → small amount of image information, large environmental illuminance. → The amount of image information is small and there is traffic jam → The amount of image information is large and road information (road width)
It can be said that large → large amount of image information and road information (road curvature) large → small amount of image information, but detailed data is omitted. Furthermore, the relationship with personal information is that age and gender are inverse functions of various reaction times, visual acuity and color vision are their inverse functions,
As the driving history and the vehicle running history, an inverse function of the S-shaped learning function is used. The relationship with the image information described above may be handled on the assumption that linearity is generally satisfied, or may be non-linear such as a log function or a power function which is a function of a human psychological quantity.

Next, when controlling the amount of information for image display,
It is necessary to determine the priority of the control target. There are several ways to determine, for example, the reference value such as the size and thickness of the characters and icons in the display screen, the contrast and color difference, the average value or the median value of each spatial frequency, Smaller values are smaller or eliminated, and larger values are larger. As another method, there is a method of increasing a display item having a value smaller than the average value depending on the state of the vehicle. For example, when traffic congestion information is included in the display of the air conditioner while the vehicle is running, the display of the inside air / outside air circulation and the like is made extremely large, and the operation using the touch panel is facilitated. When the humidity is high and the temperature difference between the inside and outside of the vehicle is large, the display size of the rear defogger switch may be increased.

As described above, the relationship between the control input signal and the control object and the information amount can be obtained to some extent from known data. As a specific example, first, the driving situation is
Since the traveling speed is 50 km / h on a straight road and the acceleration is constant, it is almost 0 km / s ² . The personal data is assumed that the visual acuity is 1.0, the color vision is normal, the age is 50, the driving history is 3 months, and the mileage is 1500 km. In this case, the image information amount in FIG. 5 is about 120 bits. About 3 to recognize everything
It takes ~ 5 seconds. Regarding the information processing ability of the person who receives the information, the visual sensation is almost an average value and the running scene is a straight line, but since the age is 50 years old, the information processing ability is 35 bits / sec.
Based on the driving history, since the user has not been riding or traveling for the past two weeks, 0.78 is used as a correction coefficient from the function of the forgetting curve. It is said that about 2 seconds is one unit of image information capture during traveling, and the amount of image information on the display screen is 35 bits × 2 seconds × 0.7 so that all screen information can be recognized in 2 seconds.
8 = 54.6 bits. The image information amount in FIG. 3 including the enlargement of the character size and the improvement of the contrast is approximately 55 bits. Since the cutoff frequency of the spatial frequency is visual acuity, a display corresponding to a change in visual acuity can be easily generated. Further, display can be corrected using an inverse function so that the spatial frequency characteristics can be easily viewed.

In addition, instead of or in addition to the driving condition / environment information input unit 8 and the personal information input unit 9, an information amount adjustment knob or the like capable of mechanically or electrically generating an arbitrary value is provided. A manual adjustment mechanism may be provided, and a plurality of image information amounts may be changed in conjunction with each other in accordance with the input amount from the manual adjustment mechanism. Thereby, it is possible to easily correspond to personal preferences.

As described above, according to the present embodiment,
For many image observers including elderly people and women, it is possible to accurately control the display of easily recognizable image information according to the situation such as running and environment, and to smoothly change the amount of image information. . Therefore, the image information is less likely to be confused or misunderstood, and the desired information can be easily obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a vehicle display device according to the present invention.

FIG. 2 is a diagram for explaining a concept of controlling the display image information amount and the vehicle traveling state, environment, and personal information in the above-described embodiment by associating the information amount with the information;

FIG. 3 is a diagram showing an example of an image processing result of a vehicle air conditioner display in the embodiment.

FIG. 4 is a block diagram of a conventional vehicle display device.

FIG. 5 is a diagram showing a display example of a vehicle air conditioner according to the conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Display means 2 Main control part (control means) 7 Recording medium 8 Running condition / environment information input part (driving situation / environment information input means) 9 Personal information input part (personal information input means)

Claims (11)

[Claims] 1. Vehicle speed, acceleration, steering angle, environmental illuminance, traffic congestion information, road information and type, at least one of intersections, driving condition / environment information, and age and gender of drivers and other image observers. Input means for inputting personal information including at least one of visual acuity, color vision, driving history, and vehicle running history; and the driving condition input from the input means.
At least one correction coefficient is obtained based on the environmental information and the personal information, and brightness, contrast, color, color difference, spatial frequency, and the size of a character or icon as a display design are determined according to the correction coefficient. And a control means for changing a plurality of image information amounts in conjunction with each other. 2. The vehicle speed, acceleration, steering angle, environmental illuminance, traffic congestion information, road information and type, at least one of intersections, driving condition / environment information, and age and gender of drivers and other image observers. As a visual design, luminance, contrast, color, color difference, spatial frequency, and display design, according to at least one correction coefficient obtained from personal information including at least any one of visual acuity, color vision, driving history, and vehicle running history. A plurality of image information amounts of the size and the number of characters or icons are changed in conjunction with each other. 3. A manual adjustment mechanism capable of mechanically or electrically generating an arbitrary value instead of or in addition to said input means, wherein said image is adjusted in accordance with an input amount from said manual adjustment mechanism. 2. The vehicle display device according to claim 1, wherein a plurality of information amounts are changed in conjunction with each other. 4. The relationship between the traveling condition / environment information and the image information amount is obtained from predetermined data such as a reading time such as a line-of-sight measurement. The vehicle display device according to claim 1, wherein the display device is obtained from a linear relationship. 5. The correction coefficient is related to the personal information, wherein the age and gender are inverse functions of various reaction times, the visual acuity and color vision are inverse functions thereof, and the driving history and the vehicle running history are S-shaped. The vehicle display device according to claim 1, wherein the value is obtained using an inverse function of a learning function. 6. The vehicle display device according to claim 4, wherein the correction coefficient is obtained by a non-linear relationship using a log function or a power function instead of the linear relationship. 7. The relationship between the size and the number of characters or icons as a display design, which are brightness, contrast, color, color difference, spatial frequency, and the image information amount, which are the optical characteristics of the display, is as follows. Large = small image information amount, high contrast = large visibility = small image information amount, high color difference = large visibility = small image information amount, high spatial frequency = large visibility = small image information amount, large characters and icons 2. The vehicle display device according to claim 1, wherein: = visibility is large = image information amount is small, and the number of characters and icons is large = image information amount is large, and a plurality of the image information amounts are changed in conjunction with each other. 8. The driving condition / environment information used for obtaining the correction coefficient is such that the vehicle speed is high → the image information amount is small,
Large acceleration → small image information amount, large steering angle → small image information amount, large environmental illuminance → small image information amount, traffic congestion → large image information amount, large road information (road width) → large image information amount 2. The vehicle display device according to claim 1, wherein the road information (road curvature) is large and the image information amount is reduced, and the plurality of image information amounts are changed in conjunction with each other. 9. As a priority in changing the image information amount, a reference value such as a size of the character or icon as image information, a character thickness, a contrast, an average value of color differences, or a median of statistical numerical values. 2. The vehicle display device according to claim 1, wherein a value smaller than the reference value is smaller or deleted, and a value larger than the reference value is displayed larger. 10. The vehicle according to claim 9, wherein when the priority order is determined, the priority order is changed for a predetermined display in accordance with the input of the driving situation / environment information or the personal information. Display device. 11. The system according to claim 10, wherein when the traffic congestion information is input in the air conditioner display while the vehicle is running, the priority order is changed to increase the display of the inside air / outside air circulation on the air conditioner display screen. Vehicle display device.