JP2013019964A - Image display device for vehicle - Google Patents

Abstract

To provide a vehicle image display device that allows a driver to easily view a display in a vehicle information image even in a smaller installation space and with a driver keeping a convergence point at a distance outside the vehicle.
A display unit 8 includes a left-eye display region and a right-eye display region, and receives vehicle information data periodically transmitted by an information signal receiving unit 2 written in a left-eye image frame buffer 5. The vehicle information image including display of vehicle information such as vehicle speed and engine speed is displayed in the left-eye display area, and the background image written in the right-eye image frame buffer 6 is displayed in the left-eye display area.
[Selection] Figure 1

Description

  The present invention relates to a vehicle image display device that displays an image such as vehicle information.

  As a conventional vehicle display device that displays vehicle information such as vehicle speed and engine speed, it is installed on a dashboard and can be used for a vehicle that can reduce the movement of the line of sight when the user views the display while driving Display devices are known (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 11-212490 JP 2010-230967 A

  However, the conventional vehicular display device installed on the dashboard is at a short distance compared to the intersection (viewpoint = convergence point) of the line of sight of the user looking outside the vehicle. For this reason, when the user tries to visually recognize the numbers and figures displayed on the vehicle display device entering the field of view while keeping the viewpoint at a distance from the outside of the vehicle, the numbers and graphics displayed on the vehicle display device Has the problem of appearing double-blurred. Thus, in order for a user looking outside the vehicle to visually recognize numbers and figures clearly, a slight line-of-sight movement is required. In other words, users who are looking outside the vehicle can see the display clearly because the displayed numbers and figures appear to overlap unless the viewpoint is moved from the outside of the vehicle to a nearby vehicle display device. Can not. This will be described with reference to the drawings.

  FIG. 19 is an explanatory diagram for explaining how the vehicle information image displayed on the vehicle display device is seen by the user when the user focuses his / her viewpoint on a distant place outside the vehicle. When the convergence point that is the intersection of the line of sight of both eyes of the user is far from the vehicle display device (indicated by A in the figure), the convergence point is on the display surface of the vehicle display device (in the figure) As shown by the broken line, the intersection of the display surface and the line of sight shifts to the right in the right eye and shifts to the left in the left eye. Therefore, when the user keeps the viewpoint at a distance outside the vehicle, the vehicle information image that can be seen by the right eye is relatively shifted to the left, and the vehicle information image that is visible to the left eye is relatively shifted to the right. The information image shifts and the display looks double.

  The present invention has been made in order to solve the above-described conventional problems, and a vehicle in which an image representing content such as vehicle information can be easily visually recognized even when the user keeps his / her viewpoint at a distance outside the vehicle. An object of the present invention is to provide an image display device.

  In order to achieve the above object, the present invention includes a display unit that displays a right-eye image and a left-eye image, and the right-eye image and the left-eye image are different images.

  According to the present invention, the user can view the image display as a non-double image while keeping the convergence point (viewpoint) that is the intersection of the lines of sight of both eyes outside the vehicle without matching the display surface of the display.

1 is a block diagram showing a configuration of a vehicle image display device 1 according to Embodiment 1 of the present invention. External view showing an example of a vehicle information image in Embodiment 1 of the present invention External view showing an example of a background image in Embodiment 1 of the present invention The figure which shows the image conversion by the image signal converter 7 Illustration of the principle of stereoscopic viewing with a display equipped with a lenticular lens External view showing an example of an installation position of display unit 8 in Embodiment 1 of the present invention Operation flow diagram when vehicle image display device 1 according to Embodiment 1 of the present invention generates a vehicle information image Schematic diagram showing the user looking at the display surface of the display unit 8 from the viewpoint from above. Explanatory drawing for demonstrating how an image is visible to the user when the user sets the convergence point on the display unit 8 Schematic diagram showing how the user is looking farther than the display unit 8 from the side view Schematic diagram showing Fig. 10 from above. Explanatory drawing for demonstrating how an image is visible to the user when the user sets the convergence point farther than the display unit 8 The block diagram which shows the structure of the image display apparatus 1 for vehicles in Embodiment 2 of this invention. External view showing an example of an installation position of imaging unit 12 in Embodiment 2 of the present invention Operation flow diagram when vehicle image display device 1 in Embodiment 2 of the present invention generates a vehicle information image The figure which shows an example of the combination of the image for left eyes, and the image for right eyes The figure which shows an example of the combination of the image for left eyes, and the image for right eyes The figure which shows an example of the combination of the image for left eyes, and the image for right eyes Explanatory drawing for demonstrating how a vehicle information image looks to a user when a user puts a viewpoint in the distance outside the vehicle

(Embodiment 1)
Hereinafter, the vehicle image display apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a vehicle image display apparatus 1 according to Embodiment 1 of the present invention. The vehicle image display device 1 includes an information signal receiving unit 2, a component image accumulating unit 3, an image generating unit 4, a left eye image frame buffer 5, a right eye image frame buffer 6, an image signal converting unit 7, a display unit 8, and a vehicle. A detection unit 9 is provided as a speed detection unit.

  The information signal receiving unit 2 receives CAN communication data from a CAN (Controller Area Network) 20 that is an information communication system in the vehicle, and vehicle information such as vehicle speed, engine speed, and fuel remaining amount included in the CAN communication data. Extract and output data. Here, the “vehicle information data” refers to data relating to a vehicle on which the vehicle image display device 1 that is the device itself is mounted. And the content of the vehicle information data extracted by the information signal receiving part 2 is determined based on the initial setting of the image display apparatus 1 for vehicles, or the setting by a user.

  The information signal receiving unit 2 may receive data related to traffic congestion and traffic regulation from VICS (Vehicle Information and Communication System) related to road traffic information in addition to information related to the vehicle. In this case, whether or not the information signal receiving unit 2 extracts road traffic information data and what to extract from the road traffic information data are determined based on initial settings or settings by the user. .

  The component image storage unit 3 is a storage device such as a flash memory that stores vehicle information component image data that is a component of a vehicle information image displayed on the display unit 8 such as character data and warning light data. When the information signal receiving unit 2 is configured to receive data from the VICS, the VICS information component image data, which is a component of an image representing content to be displayed on the display unit 8 regarding traffic jams, traffic restrictions, and the like is also stored.

  The image generation unit 4 is realized by, for example, a task operated by a CPU, periodically reads vehicle information data output from the information signal receiving unit 2, and based on the value of the vehicle information data extracted by the information signal receiving unit 2, A vehicle information image including a display relating to vehicle information is generated using the component image data. A background image in which all pixels are the background color of the vehicle information image is also generated. When the information signal receiving unit 2 receives the road status data as information other than the information related to the vehicle status, the image generating unit 4 uses the part image data based on the value of the road information data to add the road information to the road information. Generate an image that also includes an indication of the situation.

  FIG. 2 is an external view showing an example of a vehicle information image displayed in either the left-eye display area or the right-eye display area of the display unit 8. As shown in the figure, the vehicle information image includes values of vehicle information data such as a speedometer, a tachometer, a shift lever position, and a warning light stored in the component image storage unit 3 as the component image data of the vehicle information. An image display representing the reflected content (contents and contents) is included. The “image representing the content” in this case refers to an image including image display such as letters / numbers and symbols that present information related to the vehicle to the user.

  For example, when a speedometer is displayed on the display unit 8, the image generation unit 4 generates a vehicle speed value of the vehicle information data using character data stored in the component image storage unit 3. Further, when the information signal receiving unit 2 receives the vehicle information data that the value of the remaining amount of fuel in the vehicle information data is equal to or less than a predetermined value, the image generating unit 4 uses the component image based on the vehicle information data. A vehicle information image in which the remaining fuel warning light data stored in the storage unit 3 is displayed is generated.

  FIG. 3 is an external view showing an example of a background image. As shown in the figure, the image generation unit 4 stores the above-described vehicle information image in the part image storage unit 3 as an image that is not displayed in the left-eye display region and the right-eye display region of the display unit 8. An image that does not include the display of the component image data of the stored vehicle information is created. Here, the “display area” refers to a range composed of a plurality of pixels on which an image viewed as a group of images is displayed. The display unit 8 of the present embodiment includes a left-eye display area that displays an image for recognition by the user's left eye, and a right-eye display area that displays an image for recognition by the user's right eye. Yes.

  As the images displayed in the left-eye display area and the right-eye display area, the vehicle information image including the display of the component image reflecting the vehicle information data is visually recognized only by one eye by combining the vehicle information image and the background image. Can be made. Thereby, even if the user's viewpoint remains outside the vehicle, the user is not visually recognized as a state in which the image display of characters, numbers, symbols, etc. that present information related to the vehicle overlaps. Therefore, the user can easily visually recognize an image representing the content displayed on the display unit 8.

Here, as described above, the background image is an image in which all pixels are the background color of the vehicle information image, but in the present embodiment, the background image is also handled as an “image representing content”.
Moreover, even if the vehicle information image is displayed only in one of the left-eye display area and the right-eye display area and no image is displayed on the other, the vehicle information image can be easily visually recognized. For this reason, it is good also as not making all the pixels of the area | region where the vehicle information image is not displayed light-emit.

  The left-eye image frame buffer 5 is a frame buffer that temporarily stores a user's left-eye image to be displayed in the left-eye display area of the display unit 8. The right-eye image frame buffer 6 is a right-eye image frame buffer 6. This is a frame buffer that temporarily stores an image for the right eye of the user displayed in the display area. As the left-eye image frame buffer 5 and the right-eye image frame buffer 6, a memory (storage device) such as a RAM (Random Access Memory) can be used.

  The image signal conversion unit 7 converts the right-eye image and the left-eye image into an image signal for display on the display unit 8, and outputs the image signal to the display unit 8. The left-eye image frame buffer 5 and the right-eye image The image stored in the image frame buffer 6 is read to generate an image, converted into an image signal for display on the display unit 8, and output to the display unit 8.

  FIG. 4 is a diagram showing an image generated by the image signal converter 7. The image signal conversion unit 7 alternately arranges the left-eye image stored in the left-eye image frame buffer 5 and the right-eye image stored in the right-eye image frame buffer 6 for each one vertical pixel line. As shown in FIG. 4, the display unit 8 includes right-eye display areas 8R1 to Rn and left-eye display areas 8L1 to Ln. The left-eye display area and the right-eye display area are arranged so that the same area continues in the vertical direction and is alternately different for each pixel in the horizontal direction. The display unit 8 can use a display device such as a liquid crystal display, and includes a lenticular lens 10 on a display surface.

  FIG. 5 is an explanatory diagram of the principle of stereoscopic viewing by a display having a lenticular lens. A lenticular lens 10 is disposed on the front surface of the display unit 8. When the user observes the image displayed on the display unit 8 at the optimum position, the left eye of the user is the left eye image displayed in the left eye display areas 8L1 to Ln, and the right eye is the right eye display areas 8R1 to Rn. The right eye image displayed on the screen will be viewed. If the left-eye image and the right-eye image are stereoscopic images such as images taken with a stereo camera, the user can see the stereoscopic image with the naked eye.

  According to this configuration used for the purpose of stereoscopic viewing with the naked eye of the user, different images can be visually recognized by the user's left eye and right eye. Therefore, by displaying the information image on one of the left-eye display areas 8L1 to Ln and the right-eye display areas 8R1 to Rn and displaying the background image on the other, the user can keep the viewpoint positioned outside the vehicle. The image display regarding the vehicle information in the image representing the content of the unit 8 can be easily visually confirmed.

  For example, as shown in FIG. 6, the display unit 8 is installed on the dashboard so that the display content can be recognized when the user looks outside the vehicle ahead.

  The detection unit 9 detects whether or not the vehicle speed is equal to or lower than a predetermined value based on the data related to the vehicle speed received by the information signal reception unit 2, and outputs the detection result to the image generation unit 4. is there.

The processing operation of the vehicular image display apparatus configured as described above will be described below.
FIG. 7 is an operation flowchart when the vehicle image display apparatus 1 generates and displays a vehicle information image.

  The image generation unit 4 receives the vehicle information data periodically transmitted by the information signal reception unit 2, reads out vehicle information such as the vehicle speed and the engine speed from the received vehicle information data (S101), and reads out the vehicle information. A vehicle information image is generated based on the vehicle information (S102), and the vehicle information image is written in the left-eye image frame buffer 5 (S103). When the information signal receiving unit 2 receives the road condition data, the image generation unit 4 writes an image including an image display of the road condition in addition to the vehicle information using the part image data based on the value of the road information data. .

  The image generation unit 4 generates image data to be written in the right-eye image frame buffer 6 based on the detection result of the detection unit 9. That is, the image data to be generated is changed depending on whether or not it is detected that the numerical value of the vehicle speed is smaller than a predetermined value V determined in advance (S104). When it is detected that the numerical value of the vehicle speed is smaller than the predetermined value V determined in advance, the vehicle information image written in the left-eye image frame buffer 5 is written in the right-eye image frame buffer 6 (S105) and detected. If not, the background image is written into the right-eye image frame buffer 6 (S106).

  Thereafter, the image generation unit 4 determines whether or not the vehicle information image generation process is finished (S107), and continues the vehicle information image generation process until the end.

  In S104, when it is not detected that the numerical value of the vehicle speed is smaller than the predetermined value V, the image generation unit 4 writes the vehicle information image in the left-eye image frame buffer 5 and the background image in the right-eye image frame buffer 6. In this case, how the image displayed on the display unit 8 looks to the user will be described with reference to the drawings.

  FIG. 8 is a schematic diagram showing a state in which the user is looking at the display surface of the display unit 8 from above, and a convergence point that is the intersection of the eyes of both eyes of the user is displayed on the display surface of the display unit 8. is there.

FIG. 9 is an explanatory diagram for explaining how an image is seen by the user when the user sets the convergence point on the display unit 8 as shown in FIG. Thus, when the user is aligning the convergence point with the display unit 8, the user's line of sight is said to be on the display unit 8.
When the user observes the display unit 8 at the optimum position, that is, near the front center of the display unit 8, only the vehicle information image (a) can be seen on the left eye, and only the background image on (b) can be seen on the right eye. When the user places the convergence point on the display surface of the display unit 8 at that position (see FIG. 8), the left-eye image and the right-eye image appear to the same position for the user as shown in (c). Although the vehicle information image and the background image overlap, there are no images such as characters and figures in the background image, so the vehicle information image looks double without overlapping as shown in FIG. However, as shown in FIG. 8, when the convergence point is on the display surface of the display unit 8, the entire display unit 8 displays an image as a single region without dividing the display unit 8 into left-eye and right-eye image regions. The structure is visually recognized as a similar image by the user.

  FIG. 10 is a schematic diagram showing a state in which the user is looking farther than the display unit 8 from a side view. The user is looking far away from above the display unit 8, but the screen of the display unit 8 is in the field of view, and the user can recognize the display content of the display unit 8.

FIG. 11 is a schematic diagram showing FIG. 10 as viewed from above, and the convergence point of the user is farther as indicated by A than the display unit 8 indicated by B in FIG.
FIG. 12 is an explanatory diagram for explaining how the image is seen by the user when the user sets the convergence point farther than the display unit 8 as shown in FIGS. 10 and 11. When the user observes the image displayed on the display unit 8 at the optimum position, only the vehicle information image is seen on the left eye and only the background image is seen on the right eye. When the user moves the convergence point farther away from the display unit 8 at that position as shown in FIG. 11, the left eye line of sight moves to the left side and the right eye line of sight moves to the right side. As a result, it appears to the user that the left-eye image has moved to the right side and the right-eye image has moved to the left side as compared with the case where the convergence point shown in FIG. Therefore, the right-eye image and the left-eye image do not completely overlap as shown in FIG. 9, but the left-eye image shown in FIG. 12 is shifted to the right, and the right-eye image shown in FIG. It shifts to the left, and as shown in FIG. However, since the background image does not include image display such as characters and figures, the vehicle information image can be seen without being doubled as shown in FIG.

  As described above, according to the present embodiment, the image generation unit writes the vehicle information image in the left-eye image frame buffer, and writes the background image in the right-eye image frame buffer. However, the background image is visible to the right eye. For this reason, the user can view the vehicle information image as a non-double image while keeping the convergence point outside the vehicle without matching the display surface of the display.

Further, when the vehicle is traveling at a speed less than the predetermined speed V, which is the value used in S104, the image generation unit 4 writes the background image in the left-eye image frame buffer and the right-eye image frame buffer, so that the user's eyes The vehicle information image can be seen. For this reason, the vehicle information image can be displayed more clearly in a situation where the user can afford to match the convergence point to the display surface of the display.
In addition, since the user can directly view the display screen without using a mirror or the like as in the head-up display, the installation space can be further reduced.

(Embodiment 2)
Hereinafter, a vehicle image display apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings.
FIG. 13 is a block diagram showing the configuration of the vehicle image display apparatus 1 according to Embodiment 2 of the present invention. The vehicle image display device 1 includes an imaging unit 12, a line-of-sight detection unit 13, and a determination unit 14 in addition to the configuration of the first embodiment.

  The image capturing unit 12 continuously captures (moving image capturing) an image including the entire face of the driver. For example, a camera that outputs a video signal such as an NTSC (National Television Standards Committee) signal can be used. The position where the imaging unit 12 is installed may be a position where the entire face of the driver can be photographed, for example, on the display unit 8 as shown in FIG.

  The line-of-sight detection unit 13 detects a user's face direction, eye region, and pupil region from the video signal output from the imaging unit 12, and calculates a line-of-sight vector representing the user's line-of-sight direction as a three-dimensional vector. To the determination unit 14.

  As a method for calculating the line-of-sight vector, for example, the following method can be used. First, the user's face is photographed in advance when the user faces a plurality of different directions, stored as a comparison image, and the user's face portion is extracted from the video signal output by the imaging unit 12. Extract and compare with the comparative image to estimate the face orientation. Next, the user's eye area is extracted from the video signal output by the imaging unit 12, and the pupil area is further extracted from the eye area. Then, the line-of-sight direction with respect to the front direction of the face is estimated from the positional relationship between the eye region and the pupil region. Finally, a gaze vector is calculated based on the estimated face direction and gaze direction.

  Based on the line-of-sight vector calculated by the line-of-sight detection unit 13, the determination unit 14 determines whether or not the user's line of sight continues on the display unit 8 for a predetermined time or more, that is, the user gazes at the display unit 8. The determination result is output to the image generation unit 4.

  The determination unit 14 determines that the user's viewpoint is the display unit 8 when both the vertical and horizontal angles of the received line-of-sight vector are within a predetermined range with respect to the line-of-sight vector when the user is facing directly in front. Judge that it is above. Here, the boundary value of the predetermined range is statistically determined by measuring the value of the line-of-sight vector when it can be determined that the user's line-of-sight is facing the direction of the display unit 8 and when the line-of-sight cannot be determined. Set it up. The determination unit 14 can be realized by a task that operates on a CPU, for example. Further, the image generation unit 4 may be integrated with the image generation unit 4 or may be configured separately.

The processing operation of the vehicular image display apparatus 1 configured as described above will be described below.
FIG. 15 is an operation flowchart when the vehicle image display apparatus 1 generates and displays a vehicle information image.

  The image generation unit 4 receives the vehicle information data periodically transmitted by the information signal receiving unit 2 and reads vehicle information such as the vehicle speed and the engine speed (S201), and the vehicle information image based on the read vehicle information. Is generated (S202), and the vehicle information image is written in the left-eye image frame buffer 5 (S203).

Next, the image generation unit 4 generates different image data as image data to be written in the right-eye image frame buffer 6 depending on whether or not the user is gazing at the display unit 8.
Processing operations for determining whether or not the user is gazing at the display unit 8 will be described below. The line-of-sight detection unit 13 calculates a line-of-sight vector based on the image captured by the imaging unit 12, and outputs the calculated line-of-sight vector data to the determination unit 14 (S204). Whether or not the line-of-sight vector is within a predetermined range is determined by the determination unit 14 (S205).

  When the determination unit 14 determines that the line-of-sight vector calculated by the line-of-sight detection unit 13 is within a predetermined range, the determination unit 14 calculates a continuous gaze time that is a time during which the line-of-sight vector is continuously included in the predetermined range. Measurement is performed (S206), and it is determined whether or not the continuous gaze time is equal to or greater than a predetermined value T (S207). When the determination unit 14 determines that the continuous gaze time is equal to or greater than a predetermined value T set in advance, the determination unit 14 sends a signal to the image generation unit 4 to inform the user that the user is gazing at the display unit 8. Output.

  As described above, when the time in which the vertical and horizontal angles of the received line-of-sight vector are both within the predetermined range with respect to the line-of-sight vector when the user faces directly in front is determined for a predetermined time or more, the determination unit A predetermined signal is output from 14 to the image generation unit 4. When the continuous gaze time is equal to or longer than T, the image generation unit 4 writes the vehicle information image written in the left-eye image frame buffer 5 into the right-eye image frame buffer 6 (S208). The generation unit 4 writes a background image in which all pixels are the background color of the vehicle information image in the right-eye image frame buffer 6 (S210).

If it is determined in S205 that the line-of-sight vector is outside the predetermined range, the determination unit 14 clears the continuous gaze time (S209). Also in this case, the image generation unit 4 writes the background image in the right-eye image frame buffer 6 (S210).
Thereafter, the image generation unit 4 determines whether or not the vehicle information image generation process is finished (S211), and continues the vehicle information image generation process until the end.

  As described above, according to the present embodiment, when the user continues to look at the display screen for the predetermined time T that is the value used in S207, the user can afford to match the convergence point to the display surface of the display. Since it is determined that the vehicle is in a certain situation and the vehicle information image is displayed so as to be seen by both of the users, the vehicle information image can be displayed more clearly.

  In this embodiment, the left-eye image is separated from the vehicle image and the right-eye image is separated from the background image. However, the left-eye image and the right-eye image are respectively displayed to the user. The same effect can be obtained even if an image in which a vehicle information image and a background image are mixed is handled as one content so that they do not overlap each other. 16 to 18 show examples of combinations of the left-eye image and the right-eye image other than those shown in FIG.

  For example, as shown in FIG. 16, (a) an image in which vehicle information is displayed in the upper half (in this case, the vehicle speed and the background image are handled as one content), and (b) vehicle information is displayed in the lower half. Assuming that the combined image (in this case, the engine speed and the background image are handled as one content) is combined with the left-eye image and the right-eye when the convergence point is farther than the display unit as shown in (c). Even if a horizontal shift occurs in which the business image appears to be shifted in the horizontal direction, the display of the vehicle information does not overlap. Therefore, the same effect as when the vehicle information image and the background image are combined can be obtained.

  Further, as shown in FIG. 17, the lateral shift due to the convergence point being farther from the display unit occurs in the opposite direction, the left eye moving to the right and the left eye moving to the left. ) Even if the image in which the vehicle information is displayed on the right half is the left-eye image, and (b) the image in which the vehicle information is displayed on the left half is the right-eye image, as shown in FIG. The vehicle information display does not overlap even if a lateral shift occurs between the images seen by the left and right eyes due to being farther away.

  In addition, as shown in FIG. 18, a buffer region X corresponding to the line-of-sight shift width on the display surface that occurs when the eyes of both eyes are parallel as seen at infinity is provided near the center of the display surface. For example, (a) an image in which vehicle information is displayed in the right half of the buffer area X is used for the left eye, and (b) an image in which vehicle information is displayed in the left half is combined for the right eye, as shown in (c). As described above, even if a lateral shift occurs due to the convergence point being farther than the display unit, the display of the vehicle information does not overlap.

  As shown in FIGS. 16 to 18, when both the left-eye image and the right-eye image include a display related to vehicle information, the step of writing the vehicle information image in the left frame buffer (S103 in FIG. 7, FIG. 15). In the step of skipping S203) and writing the vehicle information image in the right frame buffer (S105 in FIG. 7 and S208 in FIG. 15), the left-eye image and the right-eye image are stored in the left-eye image frame buffer and the right-eye image frame buffer. In the step of writing a combined image and writing a background image in the right frame buffer (S106 in FIG. 7 and S210 in FIG. 15), the left-eye image is written in the left-eye image frame buffer, and the right-eye image frame buffer is written. It may be configured to write.

  In the operation flow of FIG. 7, the vehicle information image is written in the left-eye image frame buffer and the background image is written in the right-eye image frame buffer.

  Further, although the lenticular method is shown as an example of the stereoscopic method of the display unit 8, the same effect can be obtained by other methods such as a parallax barrier method and a frame sequential method.

  In addition, as an example of the gaze detection method, a method performed only by image analysis was shown, but the same effect can be obtained by other methods such as a corneal reflection method that irradiates infrared rays and a retinal corneal potential method that measures a potential difference around the eyes. It is done.

  The first vehicular image display device of the present invention includes a display unit that displays a right-eye image and a left-eye image, and the right-eye image and the left-eye image are images representing different contents. With this configuration, it is possible to display different images for each display area and to visually recognize images representing different contents on the left and right eyes.

  A second vehicular image display device according to the present invention includes an image generation unit that generates the right-eye image and the left-eye image based on input data in the first vehicular image display device, The image generation unit displays the right-eye image and the left-eye image in a predetermined area of the display unit. With this configuration, the image generation unit takes into account the gaze shift that occurs in the opposite direction between the left and right eyes as an image entering the field of view while a user on the vehicle is looking far away. It is possible to generate images for the left eye and the left eye, and to make another image visible to the left and right eyes.

  The display unit of the first vehicle image display device is configured such that a right-eye display region for displaying the right-eye image and a left-eye display region for displaying the left-eye image are alternately arranged, It can be set as the structure further provided with the lenticular lens which covers a display part. With this configuration, different images displayed in the left-eye display area and the right-eye display area can be recognized by the right eye and the left eye, respectively.

  One of the right-eye image and the left-eye image of the first vehicle image display device can be a vehicle information image representing content related to a vehicle on which the device is mounted. This configuration prevents the occurrence of a phenomenon in which the display of information overlaps even when there is a shift between the images seen by the left and right eyes due to the convergence point being farther from the display unit. be able to.

  The second vehicle image display device further includes a vehicle speed detection unit that detects the speed of the vehicle on which the device is mounted, and the image generation unit is configured such that the vehicle speed is not more than a predetermined value by the vehicle speed detection unit. When it is detected that the right-eye image and the left-eye image are detected, the right-eye image and the left-eye image are generated as images representing the same content. With this configuration, since the distance to the gazing point is small, the same image representing one content can be viewed with both eyes when the above-described gaze shift is less than a predetermined vehicle speed.

  The second vehicle image display device further includes a line-of-sight detection unit that detects whether or not a user's line of sight is on the display unit, and the image generation unit detects the line of sight of the user by the line-of-sight detection unit. When it is detected that the display unit is present for a predetermined time or longer, the right-eye image and the left-eye image can be generated as images representing the same content. With this configuration, when both eyes are on the display surface of the display unit, the same image representing one content can be viewed with both eyes.

  The line-of-sight detection unit may be configured to detect a user's face direction, eye area, and pupil area, and calculate the user's line-of-sight direction. With this configuration, it is possible to detect the movement of the user's gazing point.

  The vehicle image display apparatus of the present invention is useful as an in-vehicle information display system such as a meter panel.

DESCRIPTION OF SYMBOLS 1 Image display apparatus for vehicles 2 Information signal receiving part 3 Component image storage part 4 Image generation part 5 Image frame buffer for left eyes 6 Image frame buffer for right eyes 7 Image signal conversion part 8 Display part
8L Image display area for left eye 8R Image display area for right eye 9 Detection unit 10 Lenticular lens 12 Imaging unit 13 Line of sight detection unit 14 Judgment unit 20 CAN

Claims (7)

A display unit for displaying a right-eye image and a left-eye image;
The vehicle-mounted image display device, wherein the right-eye image and the left-eye image are images representing different contents. An image generation unit that generates the right-eye image and the left-eye image based on the input data;
The in-vehicle image display device according to claim 1, wherein the image generation unit displays the right-eye image and the left-eye image in a predetermined region of the display unit. The display unit is configured such that a right-eye display area for displaying the right-eye image and a left-eye display area for displaying the left-eye image are alternately arranged,
The in-vehicle image display apparatus according to claim 1, further comprising a lenticular lens that covers the display unit.   The vehicle-mounted image display device according to claim 1, wherein one of the right-eye image and the left-eye image is a vehicle information image representing content related to a vehicle on which the device is mounted. A vehicle speed detector for detecting the speed of the vehicle on which the device is mounted;
The image generation unit generates the right-eye image and the left-eye image as images representing the same content when the vehicle speed detection unit detects that the vehicle speed is equal to or lower than a predetermined value. The image display apparatus for vehicles according to claim 2 characterized by things. A visual line detection unit for detecting whether the user's visual line is on the display unit;
The image generation unit, when the gaze detection unit detects that the user's gaze is in the display unit for a predetermined time or more, the right eye image and the left eye image are images representing the same content. The vehicular image display device according to claim 2, wherein the vehicular image display device is generated.   The vehicular image display device according to claim 6, wherein the line-of-sight detection unit detects a user's face direction, an eye area, and a pupil area, and calculates the line-of-sight direction of the user.