JP2009023651A - Vehicular information display system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular information display system capable of displaying much information without obstructing a visual field of a driver. <P>SOLUTION: While setting an area relating to the visual field necessary for confirming the traffic circumstance by the driver as a visual field area, a lower part than the visual area is set as a lower part area and an area between the visual area and a room mirror positioned at the upper part is set as an upper part area. Further, a liquid crystal panel 31 for displaying an image according to display data inputted from a display controller 40 is arranged on an instrument panel P such that the displayed image is projected to the lower part area of a windshield W, and a projector 32 for displaying an image according to the display data inputted from the display controller 40 is arranged on a roof part such that the display image is projected to the upper part area of the windshield W. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle information display system using a head-up display.

  Conventionally, vehicle information using a so-called head-up display (HUD) that projects an image onto a windshield of a vehicle so that the projected image is visible to a vehicle occupant as a virtual or reflected image. Display systems are known.

In such a vehicle information display system using the HUD, various information (video) to be provided to the driver is displayed on the windshield so as not to obstruct the driver's field of view necessary for confirmation of traffic conditions. (Hereinafter also referred to as “lower region”) (see, for example, Patent Document 1).
JP 2002-19491 A

  By the way, in HUD, since necessary information can be provided safely without moving a driver | operator's eyes | visual_axis largely, in the future, all information may be provided by HUD. However, since the area under the windshield, which is the information display area, is limited, there is a problem that a large amount of information cannot be displayed at one time.

  In addition, if the display area is widened to display a lot of information, the above-mentioned viewing area is eroded, which impedes the driver's field of view and causes the driver to feel uneasy. .

  In order to solve the above problems, an object of the present invention is to provide a vehicle information display system capable of displaying a lot of information without obstructing the driver's field of view.

  In the vehicle information display system of the present invention made to achieve the above object, when the video display means displays a video showing the provision information to be provided to the vehicle occupant, the projection means displays the video of the vehicle. The image is projected onto the windshield of the vehicle so that it can be seen by the passenger. However, the projection means projects an image on at least an upper region above the visual field region related to the visual field necessary for the driver to check the traffic situation.

  As described above, in the present invention, since the display is performed in the upper region that is unlikely to obstruct the field of view during driving, it is possible to safely provide necessary information without preventing the driver from concentrating on the front scenery. it can.

  In other words, there is little information that the driver should recognize in the scenery seen in the upper area, and in most cases only the sky is visible, so even if information is displayed in this area, the driver is bothered. There is little sense of pods.

Further, in the present invention, it is possible to always provide a lot of information by using the upper region, and the driver only has to confirm the provided information at an arbitrary timing as necessary, thereby improving usability. Can do .

In particular, in the first aspect of the invention, the external situation detection means detects the situation outside the vehicle visually recognized through the windshield, and in the video display means, the adjustment means detects the situation of the vehicle occupant by the external situation detection means. When an object to be recognized is detected, the brightness of the image is adjusted so that the transparency of the image is increased when the object is in a position where the object is viewed overlapping with the image projected onto the windshield .

In other words, even the upper area, there is a possibility that obstacles and signs to be recognized occupant in the area is located, in the present invention, even in such a case, the image projected on the upper area failure It is possible to prevent obstructions when viewing objects and signs.

In the present invention, as described in claim 2, the information collecting means is for driving support based on at least one of the situation around the vehicle, the state of the driver, and the driving state of the vehicle. The information may be collected, and the video display means may be configured to use the information collected by the information seed collection means as the provided information. In addition, as information for driving assistance, the information about a road sign and a traffic signal other than the information about a lane and the information about a route (direction) can be considered, for example.

  For example, when a large vehicle is traveling ahead, road signs and traffic lights may not be visible. In such situations, providing information on road signs and traffic lights will improve driving safety. Can be made.

Then, as described in claim 3 , the video display means may display the provided information composed of information for driving support as a video of a signboard (road sign). In this case, by making it possible to intuitively grasp the contents of the signboard, it is possible to make the occupant recognize the contents of the information to be provided more quickly and reliably than when providing the information in text. .

In the case of this manner, the display and the information provided to the signage image, image display means, for example, as described in claim 4, signboard images, like the actual signboard, visible through the windshield The display position and the display size of the signboard may be changed in accordance with the change in the positional relationship between the specific point and the vehicle so that the fixed point can be seen in the scenery.

  In this case, since the signboard looks exactly the same as a familiar road sign or the like, the vehicle occupant can visually recognize the information displayed on the windshield by the device without requiring a special technique.

Furthermore, as described in claim 5 , when the video display means starts displaying the video of the sign, the faster the vehicle travels, the more the distance to the specific point and the initial value of the size of the sign are determined. You may comprise so that it may set large.

  That is, when the initial value of the distance to the specific point is constant, the faster the traveling speed, the shorter the time to reach the specific point, that is, the time during which the signboard image is displayed. However, if the initial value of the distance to the specific point is changed according to the traveling speed, the time during which the signboard image is displayed can be made substantially constant regardless of the traveling speed. Further, by changing the initial value of the size of the signboard, it is possible to make the signboard appearance almost constant regardless of the traveling speed.

  Note that the above-described visual field region desirably includes at least the test region A defined in JIS standard R3212.
  By the way, the upper region includes a region whose field of view is blocked by the room mirror, and this cannot be seen even if an image is projected onto this region. For this reason, it is desirable for the projection means to project an image on an area other than the area where the field of view is blocked by the room mirror in the upper area. In addition, instead of adjusting the projection position by the projection unit, the video display unit may be displayed on the display screen of the video display unit so that the video is projected onto a region other than the region where the field of view is blocked by the room mirror. The display position of the video may be set.

  Further, the projection unit may be configured to project an image on a lower region below the visual field region in addition to the upper region. In this case, the information to be displayed can be increased.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is an explanatory diagram showing the configuration of the vehicle information display system of the first embodiment and the arrangement of main components.

  As shown in FIG. 1, the vehicle information display system 1 inputs an information supply unit 10 serving as a supply source of information related to the driving state of the host vehicle and the situation around the host vehicle, and a command from a passenger of the host vehicle. Based on the command input unit 20, the information presentation unit 30 that displays the video and projects the displayed video on the windshield W, the supply information from the information supply unit 10, and the input command from the command input unit 20 And a display controller 40 for controlling the video displayed by the information presentation unit 30.

  Among them, the information supply unit 10 includes a vehicle speed sensor 11 that detects the speed of the host vehicle, a steering sensor 12 that detects the steering angle of the host vehicle, a rotation speed sensor 13 that detects the number of revolutions of the engine, Processes images from a camera (not shown) that captures the front, recognizes roads, preceding vehicles, obstacles, etc., and recognizes the road width of the recognized road and each recognized object (preceding vehicle or obstacle) A radar controller that obtains the relative speed and distance of an object (preceding vehicle or obstacle) existing in front of the host vehicle by transmitting and receiving radar waves (laser light, radio waves, etc.) 15, by receiving a GPS (Global Positioning System) signal and determining the position of the host vehicle, receiving FM broadcasts, wireless communication with roadside devices installed in the vicinity of the road, etc. , And a communication device 17 for acquiring road traffic information and the like, and a navigation device 18 that performs display of a map around the vehicle.

The road traffic information acquired by the communication device 17 includes traffic information, various types of regulation information, and information indicating the state of traffic lights.
In addition, the navigation device 18 includes a storage device that stores map data. Based on the position information from the GPS controller 16, the navigation device 18 reads map data in the vicinity of the current position from the storage device, and sets a mark that indicates the host vehicle or a separate setting. At least a function for displaying the route information, traffic jam information acquired via the communication device 17 on a display screen (not shown), and a function for performing route guidance by image and voice based on the route information. It is well known.

  The map data includes road shape data, various building names, intersection names, place names, etc., stored in association with position data, and information on each lane when there are multiple lanes. Lane information and the like (including directions that can travel at intersections) are also included.

  Next, the information presentation unit 30 displays an image according to the display data input from the display controller 40 and arranges the displayed image on the instrument panel P in the vehicle cabin so that the displayed image is projected below the windshield W. A liquid crystal panel 31 and a projector 32 arranged on the roof portion of the vehicle interior so as to display an image in accordance with display data input from the display controller 40 and project the displayed image on the windshield W. Consists of.

As shown in FIG. 2, if the area related to the field of view necessary for the driver to check the traffic situation is the field of view area 100, the image by the liquid crystal panel 31 is displayed in the lower area 101 located below the field of view area. The image projected by the projector 32 is set so as to be projected onto the upper region 102 located above the field of view region 100 and below the room mirror M. However, the visual field region 100 includes at least the test region A defined in JIS standard R3212.
That is, the vehicle occupant does not directly view the image displayed by the liquid crystal panel 31 or the projector 32, but projects the image on the windshield W so that the virtual image or the reflected image reflected by the windshield is visually recognized. Has been.

  Next, the command input unit 20 is installed in the vicinity of the steering wheel S (a position where the driver can easily operate), and a switch 21 for inputting a command for permitting or prohibiting display of an image on the windshield W; A microphone (not shown) that collects the voice spoken by the vehicle occupant is provided, and voice recognition is performed on the collected voice, and when it matches a preset reserved word, a message to that effect is displayed to the display controller 40. It comprises a voice recognition device 22 for notification. Here, the type of information to be displayed on the windshield W, for example, “lane information”, “vehicle information”, “route guidance”, “signal”, etc., is set as the reserved word.

  Next, the display controller 40 is configured around a known microcomputer including a CPU 41, a ROM 42, and a RAM 43, and includes an image memory 44 for storing display data to be supplied to the liquid crystal panel 31 and the projector 32.

  As shown in FIG. 3, the image memory 44 has an area 44a for storing display data to be displayed in the lower area 101 and an area 44b for storing display data to be displayed in the upper area 102. Display data stored in the region 44a (hereinafter referred to as “lower region display data”) is supplied to the liquid crystal panel 31, and display data stored in the region 44b (hereinafter referred to as “upper region display data”). 32 is set to be supplied.

  Then, the CPU 41 constituting the display controller 40 recognizes the reserved word in the voice recognition device 22 in a state where the ignition switch is turned on and a command for permitting display on the windshield W is input by the switch 21. Then, a process of displaying information corresponding to the reserved word on the windshield W is executed.

  That is, when “lane information” is recognized as a reserved word, as shown in FIG. 4, a signboard image 51 (hereinafter referred to as “virtual signboard”) showing the direction in which each vehicle can travel at the next intersection is shown. A lane information display process to be displayed in the upper area 102 is executed. When “vehicle information” is recognized as a reserved word, a video 52 representing the vehicle speed information from the vehicle speed sensor 11 and the engine speed information from the speed sensor 13 in numbers and scales is displayed in the lower area 101. The vehicle information display process to be displayed is executed. When “route guidance” is recognized as a reserved word, the distance to the guidance point and the content of the guidance are indicated by letters, numbers, and symbols when approaching the guidance point in the set route set via the navigation device 18. Route guidance display processing for displaying the displayed video 53 in the lower area 101 is executed. When “signal” is recognized as a reserved word, a signal display process for displaying an image (not shown) of the signal on the upper area 102 based on the road traffic information acquired through the communication device 17 is executed. To do.

Here, among the various display processes described above, details of the lane information display process will be described with reference to the flowchart shown in FIG.
When this process is started, first, lane information (number of lanes, information for each lane (direction that can travel at the next intersection, lane width, etc.)) about the road that is currently running is acquired from the navigation device 18 (S110). Based on the acquired lane information, the number and type of signs to be displayed (straight, right, left, straight or right, straight or left) are selected (S120).

  Next, vehicle speed information is obtained from the vehicle speed sensor 11, road information representing the road shape and position information representing the current position are obtained from the navigation device 18 (S130), and the apparent installation position of the virtual signboard is based on the obtained information. And the size of the virtual signboard are set (S140).

  Note that the display position is set such that the higher the vehicle speed, the longer the distance to the virtual installation position of the virtual signboard and the larger the size of the virtual signboard. Specifically, the distance to the apparent installation position is set so that the time until the vehicle reaches the apparent installation position is substantially constant, assuming that the vehicle travels at a constant speed according to the current vehicle speed. . The size of the virtual signboard is set so that the size of the virtual signboard when it is first displayed is substantially constant regardless of the vehicle speed (the distance to the apparent installation position).

  Next, speed information is obtained from the vehicle speed sensor 11, steering angle information is obtained from the steering sensor 12, road information and position information are obtained from the navigation device 18 (S150), and based on the obtained information and the value set in the previous S140. The display position and display size of the virtual signboard are calculated (S160). Specifically, the position and traveling direction of the host vehicle are calculated based on the vehicle speed information and the steering angle information, and the appearance of the virtual signboard at the apparent installation position is determined based on the calculated values. Thus, the display position and size of the virtual signboard are obtained.

  Next, peripheral information (position and size of the object), which is information related to an object located in the foreground visually recognized through the windshield W, is acquired from the image recognition device 14 (S170), and specified from the acquired peripheral information. It is determined whether or not the object to be recognized is an obstacle or the like to be recognized by the driver, and the object is in a position where it can be seen overlapping with the virtual signboard (S180).

  If a negative determination is made in S180, display data for displaying the video of the virtual signboard on the projector 32 is generated according to the display position and size of the virtual signboard determined in S160, and the generated display data is displayed. Write to the area 44b of the image memory 44 (S190). On the other hand, if an affirmative determination is made in S180, the display data is the same as that in S190, but display data in which the brightness of the video is corrected so as to increase the transparency of the video is generated, and the generated display data is converted into an image. Write to the area 44b of the memory 44 (S200).

  By the processing of S190 and S200, the data written in the area 44b of the image memory 44 is repeatedly supplied to the projector 32, whereby the video of the virtual signboard is displayed in the upper area 102 of the windshield W. Become.

  Since the windshield W has a curved shape instead of a plane, and the curvature varies depending on the position, the display position (S190, S200) is set so that the projected image is not distorted. It also has a function of correcting display data according to the projection position on the windshield W).

Next, it is determined whether or not an end condition for ending the display of the virtual signboard is satisfied, here, whether or not the own vehicle has passed the apparent installation position of the virtual signboard (S210), and the end condition is satisfied. If not, the process returns to S150 and repeats the process of updating the display data as needed based on the information from the information supply unit 10. On the other hand, if the termination condition is satisfied, the present process is terminated as it is.

  In the vehicle information display system 1 of the present embodiment configured as described above, the vehicle occupant is in the “lane” with the ignition switch turned on and the switch 21 set to display on the windshield W. When “information” is spoken, as shown in FIG. 4, a virtual signboard 51 indicating information on the lane is displayed above each lane visually recognized in the foreground through the windshield W.

  In FIG. 4, lane information and vehicle information are displayed on the windshield W in a situation where the vehicle is traveling in the middle of a three-lane road 300M before an intersection (guide point) set to turn left according to the route setting. The state where the route guidance information is displayed is shown. Further, in FIG. 4, the illustration of the room mirror M is omitted for easy viewing of the drawing.

  As described above, according to the vehicle information display system 1 of the present embodiment, information is displayed not only in the lower region 101 but also in the upper region 102, thereby obstructing the driver's field of view. A lot of information can be displayed by HUD.

  In the present embodiment, the lane information is displayed as a signboard image (virtual signboard) 51, and the virtual signboard 51 is displayed in accordance with the traveling state of the vehicle (traveling speed, road width, road curvature, etc.). The display position and the display size are controlled so that the display position and the display size are fixed to the apparent installation position, that is, the appearance is the same as that of a normal road sign. Therefore, the driver can view the virtual signboard without feeling uncomfortable as when viewing a signboard with a normal road sign, etc., and does not need to pay special attention. be able to.

  In the present embodiment, the region between the visual field region 100 and the room mirror M is the upper region 102. However, the left and right regions of the room mirror M are also included in the upper region 102 as shown in FIG. Anyway.

  In this case, it is desirable to adjust the display data or adjust the area where the projector 32 projects the image so that the image is not projected onto the portion where the field of view is blocked by the room mirror M.

In this embodiment, the information presentation unit 30 corresponds to a video display unit and a projection unit, the switch 21 corresponds to an input unit, the image recognition device 14 corresponds to an external situation detection unit, S180 to S200 correspond to an adjustment unit, and the information supply unit 10 corresponds to an information collection unit. To do.
[Second Embodiment]
Next, a second embodiment will be described.

  In the present embodiment, the configuration of the information presentation unit 30a and a part of the configuration of the display controller 40a are only different from those of the first embodiment, and thus this difference will be mainly described. To do.

In the vehicle information display system 1a of the present embodiment, the information presentation unit 30a includes a display 31 (for example, a liquid crystal panel) 31 that displays an image to be projected on the windshield W, and a display 31 as shown in FIG. The image (light from the display device 31) displayed on the screen is reflected and transmitted to split into two, and the image reflected by the half mirror 33 is reflected and projected onto the lower region 101 of the windshield W On the path from the half mirror 33 to the reflection type optical element 34. The reflection type optical element 34 that reflects the image that has passed through the half mirror 33 is reflected and projected onto the upper region 102 of the windshield W. And a liquid crystal shutter 37 provided on a path from the half mirror 33 to the reflective optical element 35.

  In addition, the component parts which comprise these information presentation parts 30a are accommodated in the recessed part formed in the instrument panel P. FIG. Moreover, in FIG. 7, illustrations other than the information presentation unit 30a are omitted.

  The liquid crystal shutters 36 and 37 are driven by a single drive signal, and are configured to perform a so-called complementary operation in which one is turned on (transmits light) and the other is turned off (blocks light). Yes.

  In the information presentation unit 30a configured as described above, an image displayed on the display 31 is projected onto the lower region 101 when the liquid crystal shutter 36 is on (the liquid crystal shutter 37 is off), and the liquid crystal shutter 37 is on (the liquid crystal shutter 37 is on). When 36 is off), projection is performed on the upper region 102.

  Next, as shown in FIG. 8A, the display controller 40a includes a data composition unit 45 in addition to the CPU 41, the ROM 42, the RAM 43, and the image memory 44 configured in the same manner as in the first embodiment. Yes.

  The data synthesis unit 45 generates display data obtained by time-division multiplexing the lower area display data stored in the area 44a of the image memory 44 and the upper area display data stored in the area 44b. The display data is supplied to the display 31 and a drive signal whose signal level is switched in synchronization with the multiplexing is supplied to the liquid crystal shutters 36 and 37.

  In the vehicle information display system 1a of the present embodiment configured as described above, when the video displayed on the display 31 is based on the lower area display data, the liquid crystal shutter 36 is turned on, and the video is displayed. Projected onto the lower region 101 of the windshield W. When the image displayed on the display 31 is based on the upper area display data, the liquid crystal shutter 37 is turned on and the image is projected onto the upper area 102 of the windshield W.

  In other words, in the present embodiment, the video displayed on the single display 31 can be projected onto either the lower region 101 or the upper region 102 by switching the video projection path.

  As described above, according to the vehicle information display system 1a of the present embodiment, since the information presentation unit 30a is configured by the single display 31, the information presentation unit 30a is compared with that of the first embodiment. The manufacturing cost and mounting space on the vehicle can be reduced.

In the present embodiment, the display 31 and the data synthesis unit 45 are image display means, the reflective optical element 35 is a first mirror, the reflective optical element 34 is a second mirror, the half mirror 33 is a half mirror, and a liquid crystal shutter 36. , 37 correspond to a pair of shutters.
[Third Embodiment]
Next, a third embodiment will be described.

  In the present embodiment, as in the case of the second embodiment, the configuration of the information presentation unit 30b and a part of the configuration of the display controller 40b are only different from those of the first embodiment. The explanation will focus on these different parts.

In the vehicle information display system 1b of the present embodiment, the information presentation unit 30b includes a display 31 (for example, a liquid crystal panel) 31 that displays an image to be projected on the windshield W, and a display 31 as shown in FIG. The reflection type optical element 35 that reflects the image (light from the display unit 31) displayed on the screen and projects it onto the upper region 102 of the windshield W, and the reflection type from the display unit 31 according to the drive signal from the display controller 40a. A movable mirror 38 held at either a blocking position that blocks the path to the optical element 35 or a retracted position that is retracted from the path, and an image reflected by the movable mirror 38 when the movable mirror 38 is at the blocking position. And a reflective optical element 34 that is re-reflected and projected onto the lower region 101 of the windshield W. That is, the information presentation unit 30 b has a configuration in which the liquid crystal shutters 36 and 37 are omitted from the information presentation unit 30 b of the second embodiment, and the movable mirror 38 is provided instead of the half mirror 33.

  In addition, the component parts which comprise these information presentation parts 30b are accommodated in the recessed part formed in the instrument panel P similarly to the case of 2nd Embodiment. Further, in FIG. 9, illustrations other than the information presentation unit 30b are omitted.

  In the information presentation unit 30b configured as described above, an image displayed on the display 31 is projected onto the lower region 101 when the movable mirror 38 is in the blocking position, and is projected onto the upper region 102 when the movable mirror 38 is in the retracted position. Project.

  Next, as shown in FIG. 8B, the display controller 40 b includes a data composition unit 46 in addition to the CPU 41, ROM 42, RAM 43, and image memory 44 configured in the same manner as in the first embodiment. Yes.

  The data composition unit 46 generates display data obtained by time-division-multiplexing the lower region display data stored in the region 44a of the image memory 44 and the upper region display data stored in the region 44b. The display data is supplied to the display 31 and a drive signal whose signal level is switched in synchronization with the multiplexing is supplied to the movable mirror 38.

  In the vehicle information display system 1b of the present embodiment configured as described above, when the video displayed on the display 31 is based on the lower region display data, the movable mirror 38 is held at the blocking position, The image is projected onto the lower area 101 of the windshield W. When the image displayed on the display 31 is based on the upper area display data, the movable mirror 38 is held at the retracted position, and the image is projected onto the upper area 102 of the windshield W.

  In other words, in the present embodiment, as in the second embodiment, the image displayed on the single display 31 can be projected onto either the lower region 101 or the upper region 102 by switching the projection path of the image. Therefore, the same effect as in the second embodiment can be obtained.

In the present embodiment, the display 31 and the data synthesis unit 46 correspond to video display means, the reflective optical element 35 corresponds to a first mirror, the reflective optical element 34 corresponds to a second mirror, and the movable mirror 38 corresponds to a movable mirror.
[Fourth Embodiment]
Next, a fourth embodiment will be described.

  In the present embodiment, as in the case of the second embodiment, the configuration of the information presentation unit 30c and a part of the configuration of the display controller 40c are only different from those of the first embodiment. The explanation will focus on these different parts.

In the vehicle information display system 1c of the present embodiment, the information presentation unit 30c includes a display 31 (for example, a liquid crystal panel) 31 that displays an image to be projected on the windshield W, and a display 31 as shown in FIG. A two-surface reflecting mirror 39 that reflects a part of the image (light from the display 31) displayed in the first direction in the first direction and reflects the remaining part in a second direction different from the first direction; The reflection type optical element 34 that re-reflects the image reflected in the first direction by the two-surface reflecting mirror 39 and projects it on the lower region 101 of the windshield W, and reflects in the second direction by the two-surface reflecting mirror 39. And a reflective optical element 35 that re-reflects the projected image and projects it onto the upper region 102 of the windshield W.

  In addition, the component parts which comprise these information presentation parts 30b are accommodated in the recessed part formed in the instrument panel P similarly to the case of 2nd, 3rd embodiment. In FIG. 10, illustrations other than the information presentation unit 30 c are omitted.

In the information presentation unit 30 c configured as described above, a part of the image displayed on the display 31 is projected onto the lower region 101, and the other part of the image is projected onto the upper region 102.
Next, as shown in FIG. 8C, the display controller 40c includes a data composition unit 47 in addition to the CPU 41, the ROM 42, the RAM 43, and the image memory 44 configured in the same manner as in the first embodiment. Yes.

  The data composition unit 47 is arranged in a region where an image displayed based on the lower region display data stored in the region 44 a of the image memory 44 is reflected in the first direction by the two-surface reflecting mirror 39. The lower region display data and the upper region display data are arranged so that the image displayed based on the upper region display data stored in 44b is arranged in the portion reflected in the second direction by the two-surface reflecting mirror 39. Display data is generated, and the combined display data is supplied to the display 31.

  In the vehicle information display system 1c of the present embodiment configured as described above, among the images displayed on the display 31, the image based on the lower region display data is projected on the lower region 101 of the windshield W, An image based on the upper area display data is projected onto the upper area 102 of the windshield W.

  That is, in the present embodiment, the image to be projected onto the lower region 101 and the image to be projected onto the upper region 102 are simultaneously displayed, and are displayed on the single display 31 by branching the projection path of the image. An image can be projected onto both the lower region 101 and the upper region 102.

Therefore, according to the vehicle information display system 1c of the present embodiment, the same effects as those of the second and third embodiments can be obtained.
In the present embodiment, the display 31 and the data synthesis unit 47 are image display means, the reflective optical element 35 is a first mirror, the reflective optical element 34 is a second mirror, and the two-surface reflector 39 is a two-surface reflector. It corresponds to.
[Modification]
As mentioned above, although several embodiment of this invention was described, this invention is not limited to the said embodiment, It is possible to implement in various aspects.

  For example, in the above embodiment, a liquid crystal panel or a projector is used as the display devices 31 and 32 constituting the information presentation units 30 and 30a to 30c. However, a display device including a light emitting element such as an EL may be used.

In the above-described embodiment, the command input unit 20 includes the switch 21 and the voice recognition device 22. However, the command input unit 20 includes an image recognition device that recognizes an image obtained by capturing an occupant and performs a specific gesture set in advance. You may comprise so that it may detect as a command.

It is explanatory drawing which shows the structure of the vehicle information display system of 1st Embodiment, and arrangement | positioning of the principal part. It is explanatory drawing which shows the example of a setting of the display area on a windshield. It is a block diagram which shows the relationship between a display controller and an information presentation part. It is explanatory drawing which shows the example of a display of the information on a windshield. It is a flowchart which shows the content of a lane information display process. It is explanatory drawing which shows the other example of a setting of the display area on a windshield. It is explanatory drawing which shows the structure of the information presentation part in 2nd Embodiment. It is a block diagram which shows the relationship between the display controller and information presentation part in 2nd-4th embodiment. It is explanatory drawing which shows the structure of the information presentation part in 3rd Embodiment. It is explanatory drawing which shows the structure of the information presentation part in 4th Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1a-1c ... Information display system for vehicles, 10 ... Information supply part, 11 ... Vehicle speed sensor, 12 ... Steering sensor, 12 ... Projector, 13 ... Revolution sensor, 14 ... Image recognition apparatus, 15 ... Radar controller, 16 DESCRIPTION OF SYMBOLS ... GPS controller, 17 ... Communication apparatus, 18 ... Navigation apparatus, 20 ... Command input part, 21 ... Switch, 22 ... Voice recognition apparatus, 30, 30a-30c ... Information presentation part, 31 ... Display (liquid crystal panel), 32 ... Display (projector) 33 ... Half mirror 34,35 ... Reflection type optical element 36,37 ... Liquid crystal shutter 38 ... Movable mirror 39 ... Two-sided reflection mirror 40,40a-40c ... Display controller 44 ... Image memory, 45, 46, 47 ... Data composition part, 51-53 ... Video, 100 ... View field area, 101 ... Lower area, 102 ... Upper area , M ... room mirror, P ... instrument panel, S ... steering wheel, W ... windshield.

Claims (5)

Video display means for displaying a video showing information to be provided to a vehicle occupant;
Projecting means for projecting the image on the windshield of the vehicle so that the image displayed by the image display means is visually recognized by a vehicle occupant;
In a vehicle information display system comprising:
An external situation detecting means for detecting a situation outside the vehicle visually recognized through the windshield,
When the object to be recognized by a vehicle occupant is detected by the external condition detection unit, the image display unit is configured to display the image when the object is in a position where the object is viewed overlapping with the image projected on the windshield. Adjusting means for adjusting the brightness of the image so that the transparency of
The vehicle information display system, wherein the projection unit projects the video image onto at least an upper area above a visual field area related to a visual field necessary for a driver to check traffic conditions. Comprising information collecting means for collecting information for driving support based on at least one of the situation around the vehicle, the state of the driver, and the driving state of the vehicle;
2. The vehicle information display system according to claim 1 , wherein the video display means uses the information collected by the information collection means as the provided information. 3. The vehicle information display system according to claim 2 , wherein the video display means displays the provided information including information for driving support as a video of a signboard. The video display means displays the display position of the sign according to a change in the positional relationship between the specific point and the vehicle so that the video of the sign is fixedly viewed at a specific point in the scenery viewed through the windshield. The vehicle information display system according to claim 3 , wherein the display size is changed. The video display means sets the initial value of the distance to the specific point and the size of the signboard as the vehicle travels faster when starting to display the picture of the signboard. The vehicle information display system according to claim 4 .

Images