JP5660953B2 - Information providing apparatus and program - Google Patents

Description

  The present invention relates to an information providing apparatus and a program for providing information by causing the general public to recognize the seriousness of an event by displaying characters, graphics, and the like on a display device in different colors. In particular, the present invention relates to a technique for improving the visibility of the characters and figures when color-coded for both general color blind persons and color blind persons.

  Conventionally, it has been installed in stations and streets to provide traffic information such as train operation status, or has been installed alongside roads and bridges on motorway roads, such as major highways including highways. Information providing devices that provide road information such as traffic conditions are known. For example, in an information providing device (referred to as a road information board) that displays road information, a light-emitting unit formed by combining light-emitting diodes (hereinafter referred to as LEDs) that emit red and yellow-green light colors is a matrix. In a display device arranged in a large number of shapes (dot matrix), characters and three colors are used including red, yellow green, and a mixed color of orange, which are combinations of light emission of these LEDs. The road information provided by the information provider is displayed to the driver of the vehicle by displaying an image (also referred to as provided information for convenience) such as a symbol (or figure). Recently, by combining the colors emitted from multiple LEDs that can emit each of the three primary colors (red, green, and blue), we offer a variety of colors (mixed colors) including white as well as a single color. Information providing devices capable of displaying information have been developed and are being introduced in stations and expressways.

  By the way, in the information providing apparatus, when providing information is displayed, color-coded display is performed according to the type and content of the information to be provided. Although there is no particular rule on the color of the display color of the provided information, it is generally displayed using a different color depending on the seriousness of the event. For example, in the road information board, when providing information on important events with particularly high danger such as road closures and traffic jams, it is easy to draw the attention of the driver of the vehicle and “red” (red) System), when displaying provided information on relatively minor events such as traffic restrictions and cautions about falling objects, the “orange” display color is generally used for high-speed exits, remaining distances to cities, etc. When providing information related to an event of typical traffic guidance, the display color of “white” is used to provide information while allowing the vehicle driver to recognize the significance of the event by color. I am doing so.

  When information is provided by display color coding, a general color vision person who is not abnormal in color vision can recognize the displayed provided information almost no matter what color is displayed, so that no particular problem occurs. However, it is known that most color blind people lacking red cones or green cones in the visual cells of the eye visually recognize the red color as a very dark color. May not recognize the provided information displayed in red. As described above, the provided information displayed in “red” is information related to important events that are particularly dangerous, and the safety that is not necessarily recognized by color blind persons as well as general color blind persons is impaired. there is a possibility. Therefore, in order to solve this problem, a technique for improving the visibility of the provided information color-coded for both general color blind persons and color blind persons is known. As an example, there is an apparatus described in Patent Document 1 shown below.

  In the device described in Patent Document 1, in order to improve the visibility of a color blind person, the provided information is displayed not in red alone but in a red color which is a mixed color mixed with yellowish green. However, in such a case, there is a problem in that a general color person visually recognizes the mixed color as red with a yellowish color at night. Conventionally, in order to solve this, a mixed color having a predetermined dominant wavelength is used. The mixing ratio is stored separately for day and night, and the provided information is displayed by using different mixed colors (hue) based on the mixing ratio for each day and night depending on the day and night time period (but both are red). ing.

  In order to perform display using different colors, it is necessary to adjust the balance between the peak wavelength and the dominant wavelength and set the mixing ratio in advance, considering that the characteristics of the conventional device differ depending on the type of LED used. There is. In addition, the relationship between the peak wavelength and the dominant wavelength is not uniform, and even for LEDs composed of semiconductors of the same element, the peak wavelength and the dominant wavelength are different. When setting, it is necessary to set in consideration of the balance with the dominant wavelength. Further, since the peak wavelength and the dominant wavelength differ depending on the manufacturer and model even if the LED contains a semiconductor made of the same element, both the peak wavelength and the dominant wavelength are set using an LED measuring device. It is necessary to obtain in advance a mixing ratio with a good balance with respect to the wavelength.

Japanese Patent Laid-Open No. 2005-284977

  As described above, for example, the provision information is displayed with the danger color “red” (red) on the road information board in order to inform the driver of the seriousness of the event. However, as in the conventional device described in Patent Document 1, even if information is displayed using a red color of a mixed color in order to improve the visibility of a color blind person, it is red. Since there is no change, there is a problem that it may be difficult for the color blind person to recognize the color blind person.

  The present invention has been made in view of the above points, and improves the visibility of images such as characters and designs (graphics) displayed on a display device for both general color blind persons and color blind persons. It is an object of the present invention to provide an information providing apparatus and a program that can provide information while recognizing the significance of the problem.

The information providing apparatus according to the present invention includes a display device capable of displaying an image such as a character or a figure using a plurality of colors, and the display for displaying a designated image in a designated first color. display display control means for controlling the device, when the first color the specified is a reddish color, a first portion of said specified image displayed by said display device in a reddish color The second portion of the designated image is displayed in a second color other than red that is easily recognized by a color blind person , and the red portion of the first portion and the second portion is displayed. Display switching means for controlling the display control means to alternately switch the colors and the second color while gradually changing the hue over time .

According to the present invention, when a designated first color of an image such as a character / graphic to be displayed is a red color, the designated image is divided into first and second parts, The first part is displayed in a red color, the second part is displayed in a second color other than the red color that is easily recognized by a color blind person, and the first part and the second part are displayed. Since the red color and the second color are alternately switched while gradually changing the hue over time, one image to be notified is divided into the first and second parts, The image part of can convey information about important events of high risk to the general color blind person by "red color" that can generally inform danger, while the other image part is "red system" Color sense that cannot recognize the displayed characters, figures, etc. Even for ordinary person can simultaneously broadcast in "color defectives is likely a second display color other than red-based recognition", alternately with the color of the two portions is a transition time and gradually hues By switching, there is an excellent effect that the entire image can be easily presented to both simultaneously. In this way, the visibility of displayed characters, figures, etc. can be improved in both without sacrificing either the general color blind person or the color blind person, so only either the general color blind person or the color blind person In addition, it is possible to appropriately provide information by causing both the general color blind person and the color blind person to recognize the seriousness of the event of color.

  The present invention can be constructed and implemented not only as a device invention but also as a method invention. Further, the present invention can be implemented in the form of a program of a processor such as a computer or a DSP, or can be implemented in the form of a storage medium storing such a program.

According to the present invention, when the color of the image, such as displayed Rubeki characters and graphics on the display device is a color of reddish, divided one image to be notified to the first and second portions, each portion Are displayed in a shared manner between the red color and at least a second display color other than the red color that is easily recognized by people with color blindness , and the colors of both parts are alternately shifted while gradually changing the hue over time. from what has been so switched, the general color vision person and image color-coded display in easy-to-read color for both color defectives can be presented simultaneously, it is possible to improve visibility for both, have generally color vision persons and color vision There is an effect that it is possible to appropriately provide information to both abnormal persons by recognizing the seriousness of the event by color.

It is a conceptual diagram which shows one Example of the information provision apparatus which concerns on this invention. It is a conceptual diagram which shows a display unit. It is a conceptual diagram which shows the internal structure of a display unit for convenience. It is a functional block diagram which shows roughly the function structure of a control transmission part. It is one Example of provided information. It is the figure which showed the transition range of the display color by LED control on the xy chromaticity diagram of colored light. It is a flowchart which shows one Example of a display control process. It is a flowchart which shows one Example of a display color switching process. It is another Example of provision information. It is a figure for demonstrating another embodiment of display color switching.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a conceptual diagram showing an embodiment of an information providing apparatus according to the present invention. Below, in order to make explanation easy to understand, a road information board that provides road information as an information providing device will be described as an example. The information providing device (road information board) according to the present invention is roughly divided into a display device 1 in which a large number of LEDs (light emitting elements) are arranged in a dot matrix, and control transmission for performing display control of the display device 1. Part C.

  The display device 1 includes a large number of display units U arranged in a plurality of rows and a plurality of columns (here, an example of 6 rows and 12 columns is shown). Can be displayed by images of characters, figures, etc. (see FIG. 5 and FIG. 9 described later). Here, if the image can be understood by the general public who sees it, the contents of the information (information that the information provider intends to provide) can be understood, characters, figures (designs), etc. Not limited to.

  As shown in FIG. 2, the display unit U has a plurality of LEDs 2 arranged in a matrix of N rows and N columns (for example, N = 16 in the figure). Each LED 2 is a full-color LED that can emit light of three primary colors of red, green, and blue (RGB) simultaneously with one or two elements. As shown in FIG. 3, each red LED emits a single red color. It is a light emitting element made of a semiconductor having a system color light emitting unit R, a green color issuing unit G that emits a single green color, and a blue color issuing unit B that emits a blue single color. In each LED 2, the red color light emitting unit R, the green color issuing unit G, and the blue color issuing unit B are individually or simultaneously controlled to emit light, so that the entire display surface of the display device 1 is shown in FIG. Or the road information provided by characters or designs as shown in FIG. 9 is mixed in accordance with an arbitrary ratio (mixing ratio) as well as each single color of red, green and blue. Multi-color display is performed with a mixed color (including white) having a predetermined chromaticity and luminance.

Note that the number and shape of the display units U included in the display device 1 or the LEDs 2 arranged in each display unit U, and the arrangement position thereof are not limited to this embodiment, and can be changed as appropriate.
The display device 1 is not limited to the type that emits the LED, and may be a type of display device that includes, for example, a liquid crystal display panel (LCD) or a CRT.

  Next, the control transmission unit C will be described with reference to FIG. FIG. 4 is a functional block diagram schematically showing the functional configuration of the control transmission unit C. As shown in FIG. The control transmission unit C may have functions other than those shown in FIG. 4, but here, a case where it has the minimum necessary functions will be described.

  The control transmission unit C shown in the present embodiment includes an information transmission unit 11, a display determination unit 12, a display control unit 13, a display color switching control unit 14, an LED driving unit 15, and a storage unit K and a time counting unit T. It becomes. The information transmission unit 11 transmits traffic information and various command information (for example, a test command, an operation stop command, etc.) from a road traffic management facility or the like outside the device (information providing facility not shown) via a wired or wireless communication interface. ). On the other hand, in order to have an external road traffic management facility or the like monitor the operating state of the device, each of the units 11 to 15 generated from the device at any time by a monitoring unit (not shown) with respect to the road traffic management facility or the like. Sends monitoring information indicating the operating status.

  The display discriminating unit 12 discriminates characters and symbols to be displayed on the display device 1 based on the traffic information and various command information received by the information transmission unit 11 and displays the discriminated characters and symbols on the display device 1. The display range of each display unit U among the determined characters and symbols necessary for display on the display unit and the initial display color (first color) when starting display on the display device 1 are assigned. I do. The display range and the initial display color assignment determined by the display determination unit 12 are output to the display control unit 13 as display data.

  Here, in the display discriminating unit 12 in the present embodiment, when traffic information is received by the information transmitting unit 11, the discriminating characters and symbols indicating information related to important events are displayed as “red” ( Red display colors and yellow (yellow) display colors that show information on events that are relatively minor compared to the above important events are displayed in orange and are used for events such as traffic guidance. The initial display color is assigned (designation of the first color) so that information indicating general information regarding the color is displayed in the “white” display color. The display discriminating unit 12 assigns “red” and “yellow” to the information related to the important event. In this case, the discriminated character or design is divided into, for example, meaningful words and the same color is given to the division unit. Color code to assign.

  A specific example is shown in FIG. In the provided information example shown in FIG. 5, the character display 1a of “Kyoto Minami-Ibaraki” and the character display (1b, 1c) of “accident closure” are displayed on the display device 1 in two upper and lower stages. It is an example. In the case of this display example, the “Kyoto Minami-Ibaraki” display 1a displayed in the upper part corresponds to general information regarding events such as traffic guidance, and the “Kyoto Minami-Ibaraki” display 1a is initially displayed in “white”. To do. On the other hand, the “accident closure” display (1b, 1c) displayed in the lower part corresponds to information relating to an important event, and the “accident” display 1b, which is a meaningful word for each of the “accident closure” displays, is displayed. And the “no-go” display 1c are divided into two colors, and each is color-coded for initial display. For example, the display 1b of the word “accident” is initially displayed in “yellow” and the display 1c of the word “passage” is initially displayed in “red”. Of course, the initial display shown here is an example. For example, the “Kyoto Minami-Ibaraki” display 1a is “orange”, the “accident” display 1b is “red” or “yellow”, and the “no-go” display 1c. May be initially displayed in “yellow” or “red”, respectively.

  Returning to FIG. 4, the display control unit 13 generates an initial display signal for each display unit U based on the display data output from the display determination unit 12, thereby controlling the plurality of LED driving units 15. The number of LED driving units 15 corresponding to a large number of display units U is prepared, and each LED driving unit 15 executes display control by a plurality of LEDs 2 in each corresponding display unit U. The initial display signal includes information for specifying one or a plurality of LEDs 2 within the display range (the whole of characters or symbols or a part of them) that each display unit U is responsible for, and each LED 2 that is the control target. Chromaticity and luminance signals which are control signals for causing the red color light emitting part R, the green color light emitting part G and the blue color light emitting part B (see FIG. 3) to emit light. When the initial display signal is output from the display control unit 13 to the one or more LED driving units 15, the display device 1 including a number of display units U is color-coded according to the initial display colors as shown in FIG. The provided information is displayed.

  In the present embodiment, the “red” display is not limited to the display based on the display color in which the red color light emitting unit R emits light alone, but the red color light emitting unit R and the green color light emitting unit G. In addition, display may be performed using red-based colors with shifted wavelengths, which are controlled until each output of the blue-colored light emitting unit B emits light with a mixed color having a predetermined chromaticity. That is, the description of “red” in this specification may be a mixed color as long as it can be recognized as “red” in terms of color vision. Of course, the same applies to “yellow” and “blue”, and any color that can be recognized as “yellow” or “blue” in terms of color vision may be a mixed color.

  In the present embodiment, as described above, when the road information is initially displayed, the provided information is divided into a plurality of parts, and one of them is displayed in “red” that is easy for a general color blind person to view, and the other is visually recognized by a color blind person. It is displayed in “yellow” (see FIG. 5). Thus, even if the provided information is displayed in different colors such as “red + yellow” or “yellow + red”, the visibility of both the general color blind person and the color blind person can be improved. However, since the provided information displayed in “yellow” is only a part of the original information, it is difficult to recognize a part displayed in “red” especially for those with color blindness.

  Therefore, the information providing apparatus according to the present invention changes the hue over time from red to yellow and from yellow to red, with respect to the provided information displayed by dividing the display color between “red” and “yellow”. By displaying the information while it is displayed, the color blind person can recognize not only a part of the information but also the whole. In this embodiment, the display color switching control unit 14 shown in FIG. 4 outputs the mixed color chromaticity / brightness signals to the LED driving unit 15 while changing them over time. The hue change is performed in units of divided information. The control of the LED driving unit 15 by the display color switching control unit 14 is started when a switching start instruction is given from the display control unit 13 and is finished when a switching end indication is given from the display control unit 13.

  A time measuring unit T and a storage unit K are connected to the display color switching control unit 14. The time measuring unit T transmits a clock, and the display color switching control unit 14 starts measuring time in response to the start of receiving a clock from the time measuring unit T. When the display color switching control unit 14 starts time measurement, the chromaticity and luminance of a predetermined mixed color corresponding to the elapsed time are read from the chromaticity storage unit K according to the elapsed time.

  For example, in the xy chromaticity diagram of colored light as shown in FIG. 6, the chromaticity storage unit K is a chromaticity coordinate (x, y) determined by repeatedly reciprocating the range indicated by the arrow in the drawing as time elapses. As a mixed color corresponding to the red color light emitting part R, the green color light emitting part G, and the blue color light emitting part B, the temporal change of the chromaticity of the mixed color for causing the light to be emitted at the same time is stored. As the temporal change in the chromaticity of the mixed color, for example, for information displayed as “red” as an initial display, the chromaticity coordinates (x, x, x) are changed so that the display color is changed from “red” to “yellow”. y) the chromaticity and brightness of the mixed color along the straight line indicated by the arrow from “red” (0.70,0.30) to “yellow” (0.61,0.39) to “yellow” (0.43,0.50) Change. On the other hand, the chromaticity coordinates (x, y) in FIG. 6 are “yellow” (0.43, 0.50) so that the display color is changed from “yellow” to “red” for the information displayed as “yellow” as the initial display. The chromaticity and luminance of the mixed color are temporally changed along a straight line indicated by an arrow extending from “orange” (0.61,0.39) to “red” (0.70, 0.30). The range of the chromaticity and luminance of the mixed color that changes with time is set to a range that does not deviate from the display color that is easily recognized by the color blind person. Each numerical value of the chromaticity coordinates (x, y) described above is an example and is not limited thereto.

  The chromaticity and luminance of the mixed color read from the chromaticity storage unit K according to the elapsed time are sent from the display color switching control unit 14 to the LED driving unit 15, and the display color switching control unit 14 is sent to each display unit U. On the other hand, the chromaticity and luminance of the mixed color are output. Light emission control of the red color light emitting unit R, the green color light emitting unit G, and the blue color light emitting unit B is performed so that the display unit U emits the mixed color of the chromaticity. As a result, the provided information displayed on the display device 1 continuously undergoes a hue change (color change) over time from “red to orange”, “orange to yellow”, “yellow to orange”, and “orange to red”. Repeat. By changing from “red to orange” and “orange to yellow”, “red”, which is a dangerous color that can be perceived as dangerous for general color sensation, will change to “yellow”, but color blindness Since the visibility is improved for the person, it is possible to appropriately provide traffic information that may cause danger to the color blind person. In addition, after changing from “red” to “yellow”, the color changes from “yellow to orange” and “orange to red”. By returning to “red”, it is possible to appropriately provide traffic information that may pose a danger to the general color vision person.

The display color switching control unit 14 reads out the chromaticity and luminance of the mixed color from the chromaticity storage unit K according to the elapsed time and controls the LED driving unit 15. It is also possible to calculate the chromaticity and luminance of the mixed color according to the passage of time and control the LED driving unit 15 by this. In addition, the mixing ratio of each of the three primary colors of RGB emitted from each light emitting section (R, G, B) of the LED 2 is read or calculated according to the elapsed time, and the LED driving section 15 is controlled by the mixing ratio of the colors. You may do it.
In the present embodiment, an example in which a temporal hue change is made between “red” and “yellow” is shown as an example, but the present invention is not limited to this. And a temporal hue change between colors (yellowish color, white color, etc.) that are easily perceived by a color blind person.

  Note that the chromaticity and luminance read cycle (also referred to as a color change cycle) of the mixed colors for changing the hue of the provided information with respect to time is displayed on the regulation speed of the road where the information providing apparatus is installed, or on the display device 1. It can be set as appropriate according to various conditions such as the amount of information to be performed (for example, the number of characters, etc.), the time required to interpret the information by the driver according to the vehicle speed, and the like.

  In the above case, the provided information continuously changes the hue over time from “red to orange”, “orange to yellow”, “yellow to orange”, and “orange to red”. It is important to make it possible to appropriately view the information on which the color blind persons are displayed within a limited time from a traveling vehicle or the like. In other words, if information is not displayed in the red or yellow display color for the time required to interpret the information provided by the general color blind or color blind, the general color blind or color blind There is a risk that information cannot be transmitted in the end because sufficient time cannot be secured for reading.

  In view of this, it is necessary to lengthen the display in a display color that is easy for a general color blind person or a color blind person to see, that is, for a display color that is easily visible to a general color blind person or a color blind person. The light emission control of the LED 2 is performed according to the above-described color change cycle so as to secure a time (interpretation required time) necessary for reading the information provided by each abnormal person. Specifically, as compared with the time for displaying the provided information in the display color of red or yellow, the time required for display in the transitional display color by gradually changing the hue is shortened.

  That is, in the xy chromaticity diagram of colored light as shown in FIG. 6, the time for reading the chromaticity coordinates (x, y) between “red” (0.70, 0.30) and “yellow” (0.43, 0.50). It is preferable that reading is temporarily stopped for a predetermined time in each of “red” (0.70, 0.30) and “yellow” (0.43, 0.50). Thereby, the time for displaying the provision information in the red or yellow display color can be made longer than the time for displaying the provision information in the transitional display color by changing the hue according to the time. Therefore, it is possible to provide information with the display color “red” or “yellow” only while the general color blind person or color blind person interprets the information.

  Next, an information display process for displaying information on the display device 1 as described above will be described. FIG. 7 is a flowchart illustrating an example of the display control process. The process starts when the control transmission unit C acquires traffic information and various command information from an external road traffic management facility or the like.

  Step S1 determines whether traffic information has been acquired. When various command information is acquired instead of traffic information (NO in step S1), display control according to the acquired various command information is executed (step S11). For example, when a test command is received as various command information, “in test” is displayed on the display device 1, and when an operation stop command is received, “in operation stop” is displayed on the display device 1, or Nothing is displayed on the display device 1 (stop of display by the display device 1). At this time, if a “display color switching process” (see FIG. 8) to be described later is already being executed, the process is instructed to end. That is, a switching end instruction is given from the display control unit 13 to the display color switching control unit 14.

  On the other hand, when traffic information is acquired (YES in step S1), provision information is determined and an initial display color is assigned for each display unit U (step S2). That is, the display content of information to be displayed on the display device 1 based on the received traffic information (for example, provision information such as “accident closure”) is specified, and the part of the specified display content in which each display unit U is responsible for display The provided information regarding the specific display range is determined, and the display color of each character when the information is initially displayed on the display device 1 (designation of the first color) is performed. By this processing, display data including these is generated. At this time, if the information is related to an important event, the provided information is divided into, for example, meaningful words, and a display color is assigned to each divided word unit. Here, the danger color “red” is assigned to at least one of the display colors assigned to each word unit, and the remaining display colors are assigned colors that are particularly easily visible to color blind persons (for example, as shown in FIG. 5). In addition, yellow, which is easy to be visually recognized by color blind persons, is assigned to “accident” and red, which is a dangerous color, is assigned to “closed”. At this time, if a “display color switching process” (see FIG. 8) described later is already being executed, the process is instructed to end. That is, a switching end instruction is given from the display control unit 13 to the display color switching control unit 14.

  In step S3, the initial display color assigned to each LED 2 included in the unit U is determined for each display unit U according to the display color assignment. In step S4, it is determined whether the initial display color assigned to each LED 2 is red or yellow according to the determination. If it is determined that the initial display color is assigned to red or yellow (YES in step S4), those LEDs 2 are set as display color switching target LED groups separately for "red" and "yellow" (step S5). . In step S6, it is determined whether there is a display color assignment for each LED2. If the LED 2 has no display color assigned (NO in step S6), the process jumps to step S10. That is, since no initial display signal is sent to the LED drive unit 15 and no drive signal is sent from the control transmission unit C to each display unit U, information is not displayed by turning on the LED 2.

  On the other hand, if the LED 2 is assigned the display color (YES in step S6), an initial display signal based on the display data is output to the LED drive unit 15 (step S7). In accordance with the output of the initial display signal to the LED drive unit 15, a drive signal for each LED 2 is transmitted from the control transmission unit C to each display unit U, and information on lighting of the LED 2 in the initial display color in each display unit U Is displayed. Step S8 determines whether or not each LED 2 is a display color switching target LED group. If the LED 2 is set in the display color switching target LED group (YES in step S8), the start of the display color switching process is instructed (step S9). That is, the display control unit 13 gives a switching start instruction to the display color switching control unit 14. The “display color switching process” started in response to the start instruction will be described later (see FIG. 8). In step S10, it is determined whether or not the above process has been completed for all the display units U. If it is determined that the execution of the above process has not been completed for all display units U (NO in step S10), the process returns to the process in step S3 and the processes from step S3 to S9 are repeated. If it is determined that the execution of the above process has been completed for all display units U (YES in step S10), the display control process is terminated.

  Next, the display color switching process (see step S9 in FIG. 7) will be described with reference to FIG. The display color switching process is executed for each display unit U. Step S21 starts acquisition of time measurement. In step S22, it is determined whether or not the LED 2 is set in the red LED group. If it is determined that the LED 2 is not set to the red LED group (NO in step S22), the chromaticity and luminance of the mixed color according to the passage of time in order to change the hue from yellow to red over time. Is determined (step S23).

  On the other hand, if it is determined that the LED 2 is set in the red LED group (YES in step S22), the color of the mixed color is changed with time to change the hue from red to yellow over time. The degree and brightness are determined (step S24). That is, the chromaticity and luminance of the mixed color stored in the chromaticity storage unit K are sequentially read according to the passage of time based on the time measurement acquired from the time measurement unit T (see FIG. 6). In step S25, a luminance signal corresponding to the chromaticity and luminance of the read mixed color is output to the corresponding LED driving unit 15 that controls the LED 2.

  In step S26, it is determined whether or not an end instruction has been given, that is, whether or not new traffic information and various command information have been acquired. If it is determined that the end instruction has not been given (NO in step S26), the process returns to step S22 and the processes in steps S22 to S25 are repeated. By repeating this process, the displayed color hue changes over time from “red to orange”, “orange to yellow”, “yellow to orange”, and “orange to red”, etc. Information display with continuous repetition of (color change) is realized. If it is determined that an end instruction has been issued (YES in step S26), the clock time acquisition is ended (step S27), and the display color switching process is ended.

  As described above, in the present embodiment, by controlling the light emission of the plurality of LEDs 2 arranged in a matrix, the display color is red among the characters and symbols displayed on the display device 1. The display color of the system and the yellow system that are easily recognized by color-blind persons are displayed by switching between the red system and the yellow system according to the time (see steps S22 to S25 above). . By switching the display color between a red display color and a yellow display color (which is a second color other than the red color that is easily visible to a color blind person), While it is possible to convey information about important events with high risk by displaying the provided information in a certain “red” display color, the displayed provided information cannot be recognized depending on the “red” display color. Information about important events with high risk can be communicated to color blind people.

  In addition, by alternately switching between the red display color and the yellow display color, it is possible to improve the visibility of information provided to both general color blind persons and color blind persons without sacrificing either. Therefore, it is possible to appropriately provide information while allowing not only one of the general color blind person or the color blind person but also both the general color blind person and the color blind person to recognize the significance of the event by color.

  As mentioned above, although an example of embodiment was demonstrated based on drawing, this invention is not limited to this, It cannot be overemphasized that various embodiment is possible. For example, in the above-described embodiment, a display example based on provided information including a series of characters as shown in FIG. 5 has been described as an example. However, a change in display color over time has occurred in provided information such as symbols on a graphic information board. It is good to realize.

  An example of the graphic information board is shown in FIG. FIG. 9A is a graphic information board showing a plurality of pieces of route information in the traveling direction of the vehicle. In such a graphic information board, a road area in a traffic jam where the vehicle speed is generally very low is generally indicated by a belt-like road graphic 1a ( (Provided information) is displayed in the red color, which is a dangerous color, while the road area 1b (provided information) is displayed in the orange color in the road area before the traffic congestion where the vehicle speed is starting to slow down. indicate. Therefore, in this example, the general color vision is obtained by repeatedly performing a temporal change in display color (color change control) between “red” and “yellow” as described above for the “red” road graphic 1a. The visibility of the information provided to both the user and the color blind person can be improved, and thus information is appropriately provided while making both the general color blind person and the color blind person recognize the significance of the event by color.

  FIG. 9B is an example of a road display board that provides information related to the occurrence of a fire accident in the vehicle. In this case, the road display board is displayed on the outside of a plurality of fire graphic displays indicating a fire. The fire figure 1a (provided information) shaped like a flame is displayed in "red", and the fire figure 1b (provided information) shaped like a flame displayed inside is displayed in "yellow". Therefore, in this example, by repeating the temporal change in display color between “red” and “yellow” as described above for each of the fire figures 1a and 1b, general color blind persons and color blind persons It is possible to improve the visibility of the information provided to both parties, thereby appropriately providing information while allowing both the general color blind person and the color blind person to recognize the significance of the event by color.

  In addition, it is not limited to changing the color of all the provided information displayed on the road information board in time, but only limited to a part of provided information that means important information to be conveyed to the driver. It may be changed. For example, in the road information board as shown in FIG. 5, the hue is changed only to the “no traffic” 1c portion of the “accident closure” display, or in the graphic information board as shown in FIG. The hue is changed only to the road figure 1a in the traffic jam section where the traveling speed is slow. By doing this, it is possible to emphasize more important information by changing the display color of limited information, and to encourage the driver to provide important information that the information provider wants to provide to the driver. Has the effect of raising awareness.

In the above-described embodiment, an example is shown in which the hue is gradually changed according to the chromaticity of the mixed color according to the passage of time. However, the present invention is not limited thereto, and the display is simply switched between “red” display and “yellow” display at predetermined time intervals. The provided information may be displayed.
Further, the information to be displayed is not divided and the color is temporally changed for each divided range, but the entire provided information to be displayed may be changed in a batch. For example, as shown in FIG. 5, when the provided information is “accident closure”, the display color is not changed into “accident” display and “propagation” display, and the display colors are not changed. The entire “stop” display may be changed in the same display color all at once.

  Furthermore, the range in which the display color is changed may be changed over time. For example, as shown in FIG. 10, all of the “accident closure” display is displayed in “red” as an initial display, and “red” display is changed to “yellow” display from the left to the right as time passes. To expand the character range of “yellow” display, and finally display all “accident closure” display in “yellow”. FIG. 10 shows a state where the display color has changed from “red” to “yellow” up to the range of the position Z. In addition, after all of the “Accident Closed” display is displayed as “Yellow”, the “Red” display is changed to “Red” by changing the “Yellow” display from “Left to Right”, for example, from left to right again. The character range of “” is expanded, and finally all “accident closure” indications are returned to “red” indication. In this way, the color change (display color switching) between “red” display and “yellow” display may be repeated.

In the above-described embodiment, the example in which the display color is switched between the “red” display color and the “yellow” display color is shown, but the present invention is not limited to this. In particular, the display color of “yellow” is not limited to “yellow” but may be other colors as long as the color blind person can easily recognize.
In the above-described embodiment, the road information board, which is an information providing device that displays road information, is shown as an example. However, the present invention is not limited to this. For example, the road information board is installed in a station premises, on a street, or the like. It may be a device that provides information such as the operation status of public vehicles such as gas or electricity, or information indicating a construction location such as gas or electricity or a danger location associated with a disaster.

DESCRIPTION OF SYMBOLS 1 ... Display apparatus 2 ... LED (light emitting element)
DESCRIPTION OF SYMBOLS 11 ... Information transmission part 12 ... Display determination part 13 ... Display control part 14 ... Display color switching control part 15 ... LED drive part C ... Control transmission part U ... Display unit B ... Blue color light emission part G ... Green color light emission part R ... Red light emitting part K ... Storage part T ... Time measuring part

Claims (10)

A display device capable of displaying images such as characters and figures using a plurality of colors;
Display control means for controlling the display device to display a designated image in a designated first color;
When the designated first color is a red color, the first portion of the designated image to be displayed on the display device is displayed in a red color , and the designated image The second part is displayed in a second color other than red that is easily recognized by a color blind person , and the red color and the second color of the first part and the second part are displayed as time. An information providing apparatus comprising: a display switching unit that controls the display control unit so as to switch alternately while gradually changing the hue as time passes . The display switching means gradually compares the hue with the passage of time as compared to at least one of the display time of the image using the red color and the display time of the image using the second color. Reducing the display time of the image using a color different from the red color and the second color, which are transiently generated as a result of transition, and gradually shifting the hue over time. The information providing apparatus according to claim 1 , wherein the apparatus is an information providing apparatus. The display switching means is adapted to synchronize the hue from the red color to the second color, and the designated first color is a second color other than the red color that is easily recognized by the color blind person. the color of the image is a second color, the information providing apparatus according to claim 1 or 2, characterized in that switching while transition hue reversed from the second color to the color of the red system. A display device capable of displaying images such as characters and figures using a plurality of colors;
Display control means for controlling the display device to display a designated image in a designated first color;
When the designated first color is a red color, a second color other than the red color that is easily recognized by at least a color blind person is at least a red color of the designated image displayed on the display device. Display switching means for controlling the display control means so as to switch over time to colors;
With
The display switching means alternately switches the red color and the second color while gradually changing the hue over time, and the display time of the image using the red color and Compared to at least one of the display times of the image using the second color, the red color and the second color that are transiently generated as the hue is gradually changed over time. characterized in that to gradually transition the hue according to the display time of the image is shortened, the time course of using different color from the information providing apparatus. A display device capable of displaying images such as characters and figures using a plurality of colors;
Display control means for controlling the display device to display a designated image in a designated first color;
When the designated first color is a red color, a second color other than the red color that is easily recognized by at least a color blind person is at least a red color of the designated image displayed on the display device. Display switching means for controlling the display control means so as to switch over time to colors;
With
The display switching means switches the red color and the second color alternately while gradually changing the hue over time , and changes the hue from the red color to the second color. In accordance with the timing of the transition, the designated first color is changed from the second color to the red color by changing the color of the image which is a second color other than the red color that is easily recognized by the color blind person. An information providing apparatus , wherein the hue is switched while reversely changing the hue. The information providing apparatus according to any one of claims 1 to 5, wherein the display switching unit gradually changes the hue over time without deviating from a color that is easily recognized by a color blind person. The display switching means switches colors while gradually changing the hue uniformly and gradually over the entire image over time, or switches colors while increasing or decreasing the range where the hue within the image gradually changes over time. An information providing apparatus according to any one of claims 1 to 6 .   The display device includes a plurality of light emitting elements arranged in a matrix, and displays one or more images of characters, symbols, and the like in a specified color by controlling light emission by combining one or more of the light emitting elements. The information providing apparatus according to claim 1, wherein the information providing apparatus is an information providing apparatus. A storage means for storing a chromaticity of a mixed color that can be emitted by light emission control of the light emitting element, or a temporal change of a color mixture ratio for generating the mixed color;
The display switching unit reads the chromaticity or color mixture ratio of the mixed color from the storage unit as time elapses, and controls the light emitting element to emit light based on the read mixed color chromaticity or color mixture ratio. The information providing apparatus according to claim 8, wherein the hue is gradually changed over time. Information providing device according to any one of claims 1 to 9 second color other than easily reddish recognition the color blind person is characterized by the color of the yellow system.

Images