JP2006011237A - Display system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display system for a vehicle which can effectively utilize the image elements of a projector, as compared with a method for previously separating an image simply projected from the projector as to a display system for a vehicle, which can simultaneously display an image to different areas using a single projector. <P>SOLUTION: The display system for the vehicle is constituted of the projector 10 loaded into the vehicle, an image dividing device 20 for optically dividing an image, and a first screen 31 and a second screen 32 which are arranged on mutually separated positions. An image is projected from one projector 10 to the image division device 20, the image projected from the projector 10 is divided by the image dividing device 20 and the divided images are respectively projected to the first screen 31 and the second screen 32. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicular display system, and more particularly to a vehicular display system having a projector and a screen mounted in a vehicle.

  FIG. 19 shows a part of a conventional vehicle control system. FIG. 19 is a view of the instrument panel 50 and the steering wheel 53 in the vehicle when viewed from the rear of the vehicle.

  Conventionally, at a motor show or the like, an image is projected from a projector (not shown) arranged inside the instrument panel 50 onto a transmission screen 30 arranged on the surface of the instrument panel 50 as shown in FIG. A vehicle display system that displays various information such as navigation map information and audio information has been announced.

  The individual structures of the projector and the screen used in this vehicle display system are the same as the structures of the projector and the screen used in other fields, for example, a projection television.

  FIG. 20 shows the internal configuration of the projector. As shown in FIG. 20, the projector 10 is configured to include, for example, a light source unit 11, a liquid crystal panel 12 as an image element, a condenser lens 13, and a projection lens 14.

  The light source unit 11 includes a lamp 11 a, a reflector 11 b, and a light source power source 11 c, and projects light toward the liquid crystal panel 12. The liquid crystal panel 12 receives a signal from the drawing circuit and the controller 15 and displays an image. The projection lens 14 is for enlarging and projecting the image of the liquid crystal panel 12 onto the screen 30.

  The projector 10 projects light displayed on the liquid crystal panel 12 onto the screen 30 by projecting light onto the liquid crystal panel 12 through the condenser lens 13 from the light source unit 11.

  Such a vehicle display system has features such that an image can be displayed on the curved surface of the instrument panel surface by using a projector, and a large screen can be easily realized as compared with a TFT liquid crystal display.

  By the way, when displaying a plurality of types of information such as navigation map information and audio information, as shown in FIG. 19, it is complicated to display a plurality of pieces of information in one display area 30. This is not preferable because the display contents cannot be easily understood.

  Therefore, in the case of displaying a plurality of types of information, as shown in FIG. 21, for example, the map information and the audio information are divided and displayed on the screens 31 and 32 arranged in separate areas. It is desirable to do.

  As a method for realizing such display using one projector, a method of separating the video output from the projector 10 for each type of information from the beginning can be considered as follows.

  FIG. 22 shows an example of an image displayed on the liquid crystal panel 12 of the projector 10. For example, as shown in FIG. 22, the image on the liquid crystal panel 12 is separated into a map information image and an audio information image. At this time, the area 12a in which the map information of the liquid crystal panel 12 is displayed and the area 12b in which the audio information is displayed are similar to the screens 31 and 32 in FIG.

  In this way, the video image of the liquid crystal panel 12 is divided like a video signal, and the divided video is projected, so that the map information and the audio information are respectively displayed on the screens 31 and 32 arranged in separate areas. Can be displayed.

  However, in this case, no image is displayed in the area 12c between the area 12a in which the map information is displayed and the area 12b in which the audio information is displayed on the liquid crystal panel 12 of the projector 10. For this reason, the area 12c of the liquid crystal panel 12 where no video is displayed is wasted. The area 12c where no video is displayed corresponds to the area indicated by the broken line in FIG.

  Generally, the image quality of an image projected on a screen is determined by the number of pixels of an image element such as the liquid crystal panel 12 and the amount of use (use area). In the above case, since the liquid crystal panel 12 of the projector 10 is not used effectively, the usage amount of the liquid crystal panel 12 is small.

  For this reason, the problem that the image quality of the image | video currently displayed on the screens 31 and 32 is not good arises. As a result, there arises a problem that the cognition of the user information is lowered.

  As a means for solving this problem, a method using a plurality of projectors can be considered. However, since this method uses a plurality of projectors, it has a higher cost than the case where the number of projectors is one, and new problems such as the need for a large number of projector placement locations arise. Absent.

  The above-described problem is a problem that occurs in the same manner even when an image element other than the liquid crystal panel 12 is used.

  In view of the above points, the present invention is a vehicle display system capable of simultaneously displaying video in different areas using a single projector, and is compared with a method of simply separating video from a projector from the beginning. Then, it aims at providing the display system for vehicles which can use the image element of a projector effectively.

  In order to achieve the above object, in the invention described in claim 1, the image projection means (10) mounted in the vehicle and projects an image on the display (31, 32, 33), and mounted in the vehicle, A video dividing means (20) that optically divides the video output from the video projection means (10) into a plurality of video images and sets the projection directions of the divided video images in different directions from each other in the vehicle. Each of the plurality of divided images is formed by forming the plurality of divided images, and the plurality of divided images are displayed. It is characterized by comprising a plurality of indicators (31, 32, 33).

  As described above, an image output from one image projection unit is divided into a plurality of images by the image dividing unit, and the projection directions of the plurality of divided images are set to different directions.

  Thereby, even if the video output from the video projection means is not separated and is in one state, the video output from the video projection means is separated into a plurality by the video division means, The separated videos can be displayed simultaneously in different display areas.

  Therefore, according to the present invention, even when there are a plurality of types of video to be displayed by the video projection unit, it is not necessary to separate a plurality of types of video output from the video projection unit from the beginning. It is possible to combine the types of video into one. That is, in the video displayed on the video element of the video projection means, such as when the video output from the video projection means is separated from the beginning, as shown in FIG. 22, nothing is displayed between the separated videos. There is no need to provide.

  For this reason, according to the present invention, it is possible to effectively use the image element of the image projecting unit, compared to the method of separating the image output from one image projecting unit from the beginning.

  With respect to the arrangement locations of the image projection means (10) and the image division means (20), these arrangement locations are, for example, as shown in claim 2 in the vehicle and outside the instrument panel (50). can do.

  Here, the outside of the instrument panel is, for example, a ceiling or a region between the driver's seat and the passenger seat in the passenger compartment. In this case, a reflective type display can be used.

  Moreover, regarding the arrangement place of a some indicator, it can set to the arbitrary places in a vehicle interior. For example, a display device can be arranged on a windshield or the like, which is a display location of an instrument panel, a pillar, or a head-up display, or the location can be used as a display device.

  Further, as shown in claim 3 and claim 4, the arrangement location of the image projection means (10) and the image division means (20) can be set inside the instrument panel (50) in the vehicle, for example. .

  With regard to the plurality of indicators, as shown in claim 3, the plurality of indicators (31, 32, 33) are configured only by a transmissive type, or as shown in claim 4, a plurality of indicators ( 31, 32, 33) can be configured as both a reflection type and a transmission type.

  In addition, as shown in claim 4, when a plurality of indicators are configured in both a reflective type and a transmissive type, the arrangement of these indicators is, for example, on the side where the reflective type indicator is away from the driver. It is preferable that the transmissive display is on the side closer to the driver.

  Further, regarding the invention according to claim 4, as shown in claim 5, of the reflective and transmissive displays (31, 32, 33), the reflective display (31) is separated from the driver. When the transmission type display (32) is arranged on the side closer to the driver, the image projection means (10) and the image division means (20) are connected to the reflection type display (31). It can be placed between the type indicator (32).

  As a result, the image projection means, the image division means, the reflection type and the transmission type display can be accommodated in the instrument panel in a compact manner.

  Further, as shown in claims 3 and 4, by using a transmissive display as a display, a display as shown in claim 6 can be obtained as compared with a case where only a reflective display is used. It becomes easy to give the device a so-called touch panel function.

  As for the video dividing means (20), as shown in claim 7, the video dividing means (20) can be constituted by, for example, mirrors (21, 22) and prisms (23, 24).

  In the invention described in claim 8, the focus adjusting means (60) is arranged in the projection path of the image from the image dividing means (20) to the plurality of displays (31, 32, 33). It is a feature. As the focus adjustment means (60), for example, a focus adjustment lens 60 can be used.

  Thereby, even if the distance from the image projection means to each display device is different, the image can be focused on each display device.

  In the invention described in claim 8, the focus adjusting means is newly added as a component, but as shown in claim 9, the image dividing means (20, 26, 27) has a focus adjusting function. You can also have it. Thereby, the focus adjustment means can be omitted.

  In addition, as shown in claim 10, at least one of the image projecting means (10) and the image dividing means (20) displays all the images output from the image projecting means (10) with a plurality of display devices. It can be made movable so that it can be displayed on one of (31, 32, 33).

  As a result, the video projected from the video projection means can be concentrated and displayed on one display device without being divided. As a result, when the vehicle is stopped, a high-quality image such as a movie can be displayed on the display.

  In addition, the code | symbol in the bracket | parenthesis of each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

(First embodiment)
FIG. 1 shows a configuration of a vehicle display system in a first example of the first embodiment. FIG. 2A shows a view of the inside of the vehicle as viewed from the side of the vehicle. FIG. 2B shows the instrument panel 50 and the steering wheel 53 in the vehicle from the rear of the vehicle toward the front of the vehicle. The figure when seen is shown. In FIG. 2A, cross sections of the instrument panel 50, the windshield 51, and the roof 52 are shown.

  In the present embodiment, an example will be described in which the projector 10 as the image projection unit is disposed outside the instrument panel 50 and the reflective screens 31 and 32 are used as displays.

  As shown in FIG. 1, the vehicle display system includes a projector 10, a video dividing device 20 as a video dividing unit, a first screen 31 and a second screen 32 as a plurality of displays, and a control circuit 41. And in-vehicle devices such as a navigation device 42, an audio device 43, and an air conditioner device 44.

  The projector 10 projects images such as map information and audio information on the first and second screens 31 and 32. The internal configuration of the projector 10 is the same as the internal configuration described in the background art section (see FIG. 20). Further, as shown in FIG. 2A, the projector 10 is disposed on the ceiling in the vehicle interior (inside the roof 52). For example, when a center line is drawn in the front-rear direction with respect to the vehicle, the projector 10 is almost Located on the center line.

  Here, FIG. 3 shows an image displayed on the image element of the projector 10. Also in the present embodiment, for example, the liquid crystal panel 12 is used as the image element of the projector 10. In the present embodiment, as shown in FIG. 3, when there are two types of images displayed on the liquid crystal panel 12, for example, map information and audio information, these images are not separated and are combined into one. It is displayed on the entire surface of the liquid crystal panel 12 in a grouped state (adjacent state).

  That is, in this embodiment, when the map information and the audio information are displayed on the screens 31 and 32, as shown in FIG. 3, the entire liquid crystal panel 12 displays the area 12a where the map information is displayed and the audio information. Into the divided area 12b.

  The control circuit 41 is connected to in-vehicle devices such as the projector 10, the navigation device 42, the audio device 43, and the air conditioner device 44. The control circuit 41 receives the video output from these in-vehicle devices and the status information of these in-vehicle devices, and creates an image to be projected by the projector 10. Then, the control circuit 41 outputs the video signal to the projector 10 so that the projector 10 projects this video.

  Thereby, an image is projected from the projector 10 onto the screens 31 and 32.

  Note that the on-vehicle devices such as the projector 10, the control circuit 41, the navigation device 42, the audio device 43, and the air conditioner device 44 described above operate when power is supplied from the battery.

  The video dividing device 20 is disposed at a place where the video output from the projector 10 is incident. In the present embodiment, the video dividing device 20 is a ceiling in the passenger compartment, like the projector 10, and is disposed substantially on the center line when a center line is drawn in the front-rear direction with respect to the vehicle, and The projector 10 is disposed between the first and second screens 31 and 32.

  The video dividing device 20 optically divides one video output from the projector 10 into a plurality of videos, and can set the projection directions 17a and 17b of the divided videos to different directions. It has become.

  Here, a configuration example of the video dividing device 20 is shown in FIGS. As the video dividing device 20, for example, as shown in FIG. 4A, a device constituted by two reflecting mirrors 21 and 22 can be used.

  As another example, as shown in FIG. 4B, a configuration constituted by two prisms 23 and 24 can be used as the video dividing device 20. As the prisms 23 and 24, right-angle prisms can be used.

  Note that, when a general prism is used, color dispersion occurs, so that color blur occurs in the projected image. For this reason, it is necessary to adjust the prism so that color blur does not occur in the projected image.

  Then, as shown in FIGS. 4A and 4B, the video dividing device 20 divides one incident light 16 into two, and the two divided lights 17a and 17b in different directions. It comes to inject.

  Note that the direction 16 of light incident on the video dividing device 20 and the directions 17a and 17b of the two lights emitted from the video dividing device 20 are different from each other.

  In the present embodiment, as shown in FIG. 2 (a), the video dividing device 20 divides the video output from the projector 10 into two in the vertical direction, and the divided video is divided into the first screen 31 and the first screen, respectively. 2 screen 32 is displayed.

  Therefore, in the video dividing device 20, the angles of the reflecting mirrors 21 and 22 and the prisms 23 and 24 are adjusted so that the video output from the projector 10 can be projected onto the first and second screens 31 and 32. ing.

  The first screen 31 and the second screen 32 form an image projected from the projector 10. For example, the first and second screens 31 and 32 are both constituted by reflective screens. This reflective screen is the same as a general projection film used in a projector used in an office meeting or the like.

  The first screen 31 and the second screen 32 are both substantially rectangular and have the same size. In addition, the first and second screens 31 and 32 are disposed at locations in the vehicle that are separated from each other and are projected by a plurality of images divided by the image dividing device 20.

  In the present embodiment, as shown in FIGS. 2A and 2B, the first and second screens 31 and 32 are arranged on the surface of the instrument panel 50 and spaced apart from each other. ing. The first screen 31 is disposed on the upper side, and the second screen 32 is disposed on the lower side.

  Further, as shown in FIG. 2B, the first and second screens 31 and 32 are arranged substantially on the center line when the center line is drawn in the front-rear direction with respect to the vehicle. As shown in FIG. 2A, the second screen 32 is disposed closer to the driver than the first screen 31 in the vehicle front-rear direction.

In the vehicle display system configured as described above, images are displayed on the two screens 31 and 32 as follows. That is, the projector 10 receives the video signal from the control circuit 41 and projects a video on the video dividing device 20. Then, the video dividing device 20 divides the image incident from the projector 10 into two parts, and projects the divided images onto the first and second screens 31 and 32, respectively.

  Thereby, for example, navigation map information is displayed on the first screen 31, and at the same time, for example, music information being played on the audio device is displayed on the second screen 32.

  As described above, the vehicle display system of the present embodiment is configured to include the projector 10, the video dividing device 20, the first screen 31, and the second screen 32.

  The video dividing device 20 optically divides an image output from one projector 10 into upper and lower parts, and the projection destinations of the two divided images are arranged separately from each other. The screen 31 and the second screen 32 are used.

  Thus, according to the present embodiment, even when it is desired to simultaneously display two images at a distant place with one projector 10, as shown in FIG. 3, the entire liquid crystal panel 12 in the projector 10 is displayed. A single image can be displayed.

  That is, according to the present embodiment, when an image is displayed on the liquid crystal panel 12, as shown in FIG. 22, there is nothing between the area 12a where the map information is displayed and the area 12b where the audio information is displayed. There is no need to provide the region 12c where no video is displayed.

  For this reason, according to the present embodiment, the image element of the projector 10 is used more effectively than the method of separating the image from one projector 10 from the beginning (the method of separating and displaying the image on the image element). can do. As a result, the use range of the liquid crystal panel 12 can be increased as compared with the case where the image element is not effectively used, so that the image quality of the images displayed on the screens 31 and 32 can be improved.

  In the first example described above, the case where the projector 10 and the video dividing device 20 are arranged outside the instrument panel 50, for example, on the ceiling in the passenger compartment, has been described. The projector 10 or the like can be arranged in the area or the like.

  FIG. 5 shows the configuration of the vehicle display system in the second example of the present embodiment. FIG. 5 is a diagram corresponding to FIG.

  In the first example, the configuration of the video dividing device 20 is a configuration using two reflecting mirrors or prisms, and both projection directions 17a and 17b of the video divided by the video dividing device 20 are shown in FIG. The case where the direction is changed from the direction 16 of the video incident on the video dividing device 20 has been described as an example.

  On the other hand, the configuration of the video dividing device 20 may be a configuration using one reflecting mirror or prism. As a result, as shown in FIG. 5, only one projection direction 17 b out of the projection directions 17 a and 17 b of the video divided by the video division device 20 is different from the direction 16 of the video incident on the video division device 20. It can also be changed to.

  FIG. 6 shows the configuration of the vehicle display system in the third example of the present embodiment. FIG. 6 is a diagram corresponding to FIG.

  When the video dividing device 20 includes the reflecting mirrors 21 and 22, the projector 10 and the video dividing device 20 can be arranged as shown in FIG. That is, with the orientation of the projector 10 (projection direction 16) opposite to the orientation of the projector 10 shown in FIG. 2, the first and second screens 31 and 32, the projector 10, the video division from the front of the vehicle to the rear of the vehicle. The devices 20 may be arranged in this order.

  In FIG. 6, the first and second screens 31 and 32, the projector 10, and the video dividing device 20 are arranged on a substantially straight line.

  In this way, the image projected from the projector 10 is reflected by the image dividing device 20, thereby displaying the image on the first screen 31 and the second screen 32 arranged on the surface of the instrument panel 50. You can also.

  FIG. 7 shows a configuration of a vehicle display system in the fourth example of the present embodiment. 7A is a diagram when the inside of the vehicle is viewed from the lateral direction of the vehicle, and FIG. 7B is a diagram when the instrument panel 50 in the vehicle is viewed from the rear of the vehicle toward the front of the vehicle. FIG. 7C is a view of the projector 10, the video dividing device 20, and the first and second screens 31 and 32 viewed from above the vehicle.

  In the fourth example, a case will be described in which the locations of the projector 10 and the video dividing device 20 are different from those in the first to third examples.

  In the first to third examples described above, the case where the projector 10, the video dividing device 20, the first and second screens 31 and 32 are arranged on a substantially straight line has been described as an example, but these are arranged on a straight line. You can not.

  For example, as shown in FIGS. 7A and 7C, the direction connecting the projector 10 and the video dividing device 20 and the direction connecting the video dividing device 20 and the first and second screens 31 and 32 are perpendicular to each other. The projector 10, the video dividing device 20, and the first and second screens 31 and 32 can also be arranged so that

  That is, as shown in FIGS. 7A to 7C, the projector 10 is arranged on the ceiling in the vehicle interior so that the direction of the projector 10 (projection direction 16) is the vehicle lateral direction. Then, the video splitting device 20 is placed on the ceiling of the vehicle interior so that the direction 17 of the video emitted from the video splitting device 20 and the direction 16 of the video entering the video splitting device 20 from the projector 10 are perpendicular to each other. It can also be arranged.

  In this way, the image projected from the projector 10 in the lateral direction of the vehicle is divided into the upper and lower parts by the image dividing device 20 and the projection direction of the image is bent at a right angle so that the first screen 31 and the second screen Each image can be displayed on the screen 32.

  Note that the angle between the direction 17 of the image emitted from the image dividing device 20 and the direction 16 of the image entering the image dividing device 20 from the projector 10 is not limited to 90 degrees (right angle), and is set to another angle. You can also. However, in order to prevent the trapezoidal distortion from occurring in the images projected on the screens 31 and 32, it is preferable to set this angle to 90 degrees.

  FIG. 8 shows a configuration of a vehicle display system in the fifth example of the present embodiment. FIG. 8A is a diagram when the inside of the vehicle is viewed from the lateral direction of the vehicle, and FIG. 8B is a diagram showing the projector 10, the video dividing device 20, the first and second screens 31 and 32 from above the vehicle. FIG.

  In the fifth example, a case will be described in which the screen is arranged at a place different from the first to fourth examples.

  In the first to fourth examples described above, the case where both the first screen 31 and the second screen 32 are arranged on the instrument panel 50 has been described as an example. However, these screens are placed in other places in the vehicle interior. It can also be arranged.

  For example, as shown in FIGS. 8A and 8B, the first screen 31 can be arranged on the instrument panel 50, and the second screen 32 can be arranged on the front pillar on the driver's seat side.

  In FIG. 8, the projector 10 and the video dividing device 20 are arranged on the ceiling in the passenger compartment. Then, the image projected from the projector 10 is directly displayed on the second screen 32, and the image projected from the projector 10 is displayed on the first screen 31 via the image dividing device 20. ing. In FIG. 8, the video dividing direction of the video dividing device 20 is the left-right direction.

  In addition, although not shown, the second screen 32 can be disposed on the front pillar on the passenger seat side, and a windshield as a display location of the head-up display can be used as the screen.

  Also, the rear seat and its periphery can be used as a screen. In this case, for example, when the vehicle moves backward, an image from an image pickup device installed on a trunk or a back bumper (not shown) is displayed on the rear seat and the periphery thereof. As a result, when the vehicle is moving backward, the scenery hidden behind the vehicle body such as the trunk can be shown as if there is no vehicle body, and the operation can be performed safely and easily.

  In the present embodiment, the case where the video output from the projector 10 is divided into two by the video dividing device 20 has been described as an example. However, the number is not limited to two, but is divided into three, four, or more. In addition, the video can be divided.

  In other words, in the present embodiment, the case where the number of screens is two has been described as an example, but the number of screens may be other numbers. Then, the number of videos divided by the video dividing device 20 can be determined according to the number of screens.

(Second Embodiment)
In the present embodiment, a case where the projector 10 and the video dividing device 20 are arranged inside the instrument panel 50 and a transmissive screen is used as a display will be described.

  9 and 10 show a vehicle display system in a first example of the present embodiment. FIG. 9 is a diagram when the inside of the vehicle is viewed from the lateral direction of the vehicle, and FIG. 10 is a diagram when the instrument panel 50 in the vehicle is viewed from the rear of the vehicle toward the front of the vehicle.

  The vehicle display system according to the present embodiment has the same configuration as that of the first embodiment except for the location of the projector 10 and the video dividing device 20 and the types of the first screen 31 and the second screen 32. ing.

  In the first example of the present embodiment, as shown in FIG. 9, the projector 10 and the video dividing device 20 are disposed inside the instrument panel 50. Also, as shown in FIG. 10, the first and second screens 31 and 32 are on the surface of the instrument panel 50 and are spaced apart from each other in the same manner as in the first example of the first embodiment. Are arranged.

  The first and second screens 31 and 32, the video dividing device 20, and the projector 10 are sequentially arranged from the surface of the instrument panel 50 toward the front of the vehicle.

  The first screen 31 and the second screen 32 are of a transmissive type. As this transmissive screen, a commercially available screen, for example, the same screen as that used in a projection television can be used. Specifically, it is possible to use a material that is specially processed so that an image is coupled to a resin plate.

  As shown in FIG. 9, the second screen 32 is disposed closer to the driver than the first screen 31. A touch panel 40 is disposed on the driver side surface of the second screen 32.

  In the present embodiment, the video output from the projector 10 disposed inside the instrument panel 50 is split up and down by the video splitting device 20. Then, the divided images, for example, map information and audio information are displayed on the first and second screens 31 and 32 arranged on the surface of the instrument panel 50, respectively.

  Also in the present embodiment, since the video output from the projector 10 is divided by the video dividing device 20 as described above, the same effect as that of the first embodiment is obtained.

  In the present embodiment, the touch panel 40 is disposed on the driver side surface of the second screen 32. The touch panel 40 is for operating on-vehicle devices such as a navigation system and audio.

  When the projector 10 is arranged outside the instrument panel 50 and the reflective second screen 32 is used as in the first embodiment, the touch panel 40 is placed on the driver side surface of the second screen 32. If the hand is placed, the hand may block the image during the driver's touch operation, which may cause a problem that the touch panel 40 cannot be operated.

  On the other hand, in the present embodiment, the projector 10 is disposed inside the instrument panel 50, and the first and second screens 31 disposed on the surface of the instrument panel 50 from the inside of the instrument panel 50, An image is projected on the camera 32.

  Thereby, it is possible to prevent the hand from blocking the image during the driver's touch operation, and thus the above-described problem can be solved.

  FIG. 11 shows a configuration of a vehicle display system in the second example of the present embodiment. FIG. 11A is a diagram when the projector 10, the video dividing device 20, and the screens 31, 32, and 33 are viewed from above the vehicle, and FIG. 11B is a diagram when the interior of the vehicle is viewed from the lateral direction of the vehicle. FIG.

  In the first example, the case where the first screen 31 and the second screen 32 are arranged on the surface of the instrument panel 50 so as to be spaced apart in the vertical direction has been described as an example. As described above, the plurality of screens can be arranged separately in the left-right direction of the vehicle.

  That is, as shown in FIG. 11A, on the surface of the instrument panel 50, in front of the passenger seat, in front of the driver, and in the area of the center console portion, the first screen 31 and the second screen, respectively. 32, and a third screen 33 can also be arranged.

  FIG. 12 shows the structure of the video dividing device 20. 12A is a view of the video dividing device 20 as viewed from above, and FIG. 12B is a view of the video dividing device 20 as viewed from the front.

  As shown in FIG. 12B, the video dividing device 20 includes a casing 24 and reflecting mirrors 21 and 22 inside the casing. The reflecting mirrors 21 and 22 are respectively arranged on the upper side and the lower side of the casing 24, and an image incident from the projector 10 passes through the center of the casing 24.

  12A, the reflecting mirror 21 can project the image incident from the projector 10 onto the first screen 31, and the reflecting mirror 22 can project the image incident from the projector 10. The angle is adjusted so that can be projected onto the second screen 32.

  Although not shown, the video displayed on the liquid crystal panel 12 inside the projector 10 is a video in which three types of video are arranged in the vertical direction.

  In the vehicle display system having such a configuration, the video output from the projector 10 is divided into three in the left-right direction by the video dividing device 20, and the three divided images are respectively the first screen 31 and the second screen. 32, displayed on the third screen 33.

  Thus, in the second example, on the surface of the instrument panel 50, in front of the passenger seat, in front of the driver, and in the area of the center console portion, the first screen 31, the second screen 32, A third screen 33 is arranged.

  In the case where the projector 10 and the video dividing device 20 are arranged outside the instrument 10 such as the vehicle ceiling as in the first embodiment, when the screens 31, 32, and 33 are arranged as in the second example described above, There is a possibility that the image of the projector 10 may be blocked by the driver or the passenger on the passenger seat.

  On the other hand, in the present embodiment, the projector 10 is disposed inside the instrument panel 50, and the first and second screens 31 disposed on the surface of the instrument panel 50 from the inside of the instrument panel 50, An image is projected on the camera 32.

  Thereby, it can prevent that the image | video of the projector 10 is obstruct | occluded by a driver | operator or a passenger in a passenger seat.

(Third embodiment)
In the present embodiment, a case will be described in which the projector 10 and the video dividing device 20 are disposed inside the instrument panel 50, and both a transmissive screen and a reflective screen are used as a display.

  FIG. 13 shows a vehicle display system in a first example of the present embodiment. FIG. 13 is a view of the inside of the vehicle as viewed from the lateral direction of the vehicle.

  Also in this embodiment, as shown in FIG. 10, the first screen 31 and the second screen 32 are arranged on the surface of the instrument panel 50 so as to be spaced apart from each other.

  However, in the present embodiment, the first screen 31 is a reflection type, and the second screen 32 is a transmission type. As shown in FIG. 13, the second screen 32, the video dividing device 20, the first screen 31, and the projector 10 are sequentially arranged from the side closer to the driver.

  The image is directly projected from the projector 10 onto the transmissive second screen 32, and the image emitted from the projector 10 is divided onto the reflective first screen 31 by the image dividing device 20, The image is projected through the video dividing device 20.

  The first screen 31 is located above the second screen 32 and is located on the side away from the driver near the lower end of the windshield 51. For this reason, the first screen 31 is used as a main display screen.

  On the other hand, the 2nd screen 32 is arrange | positioned at the side near a driver | operator, and also the touch panel 40 is arrange | positioned similarly to 2nd Embodiment on the surface at the side of a driver | operator. For this reason, the second screen 32 is used as an operation screen for in-vehicle devices.

  Normally, the image projected by the projector 10 differs depending on whether the screen is a reflective type or a transmissive type. Therefore, in the present embodiment, the image projected by the projector 10 is adjusted so that the image is appropriately displayed on both the reflective screen 31 and the transmissive screen 32.

  FIG. 14 shows a vehicle display system in the second example of the present embodiment. FIG. 14 is a view of the inside of the vehicle as viewed from the lateral direction of the vehicle. The second example is different from the first example in the location of the projector 10 and the video dividing device 20.

  As shown in FIG. 14, the reflective first screen 31 is disposed on the surface of the instrument panel 50 on the side away from the driver, as in the first example. The second screen 32 is arranged on the side close to the driver. That is, the first screen 31 is disposed on the vehicle front side with respect to the second screen 32.

  The projector 10 and the video dividing device 20 are disposed between the first screen 31 and the second screen 32 in the vehicle front-rear direction.

  In this embodiment, both the first and second examples have the same effect as the first embodiment because the video dividing device 20 is used.

  In the present embodiment, the projector 10 and the video dividing device 20 are arranged inside the instrument panel 50 in both the first and second examples. And both the reflective 1st screen 31 and the transmissive | pervious 2nd screen 32 are used as a display, and the 1st screen 31 is arrange | positioned rather than the 2nd screen 32 at the vehicle forward side. .

  Accordingly, as can be seen by comparing FIG. 9 with FIGS. 13 and 14, the projector 10 and the video dividing device 20 can be made more compact than the vehicle display system described in the first example of the second embodiment. It can be stored inside the instrument panel 50.

  Further, in the second example of the present embodiment, the projector 10 and the video dividing device 20 are arranged between the first screen 31 and the second screen 32 in the vehicle front-rear direction.

  Thus, as can be seen by comparing FIG. 13 and FIG. 14, the projector 10 and the video dividing device 20 can be housed in the instrument panel 50 more compactly than in the first example. it can.

  Further, the second example of the present embodiment is the most suitable arrangement in all the following aspects.

  When disposing the first screen 31 serving as the main display screen on the surface of the instrument panel 50, it is preferable to dispose the first screen 31 at a position where it can be seen even during driving. Further, in the case where the second screen 32 that is used as an operation screen for an in-vehicle device or the like is provided by providing the touch panel 40, the second screen 32 needs to be in a position that can be reached by the driver.

  From these viewpoints, it can be said that the first screen 31 should be arranged on the side away from the driver, and the second screen 32 should be arranged on the side close to the driver.

  Further, when the touch panel 40 is operated, in order to prevent the image from being blocked by a hand, the image must be transmitted and displayed from the back side of the operation surface of the touch panel 40.

  From this point of view, it can be said that the projector 10 and the video dividing device 20 are preferably arranged inside the instrument panel 50 and the transmissive second screen 32 is used.

  Further, since the farthest possible position of the main display is in the vicinity of the lower end of the windshield 51, it is preferable to place the first screen 31 at this location. However, in a front engine type vehicle that occupies a large number of engine layout types, when the transmissive first screen 31 is disposed in the vicinity of the lower end portion of the windshield 51, the projector 10 is disposed in the engine room. At this time, since the projector 10 is affected by heat, dust, etc., it is not suitable as a place where the projector 10 is mounted.

  From this point of view, it is required to store the projector 10 and the video dividing device 20 in the instrument panel 50 in a compact manner.

  From all the above viewpoints, it can be said that the arrangement of the second example of the present embodiment is most preferable.

  In this embodiment, the case of using one reflective screen 31 and one transmissive screen 32 has been described as an example. However, a plurality of reflective screens 31 or a plurality of transmissive screens 32 are used. Alternatively, a plurality of reflective screens 31 and a plurality of transmissive screens 32 can be used.

(Fourth embodiment)
In the present embodiment, a response when a plurality of screens cannot be placed at an equal distance from the projector 10 will be described.

  FIG. 15 shows the configuration of the vehicle display system in the first example of the present embodiment. FIG. 15 is a diagram when the projector 10, the video dividing device 20, and the screens 31, 32, and 33 are viewed from above the vehicle.

  In the first example of the present embodiment, a focus adjustment lens 60 is provided as a focus adjustment means with respect to the vehicle display system (see FIG. 11) described in the second example of the second embodiment.

  In the vehicular display system having such a configuration, as shown in FIG. 15, the first optical path through which the image projected by the projector 10 directly reaches the third screen 33 and the image projected from the projector 10 are divided. A second optical path that is reflected by the reflecting mirror 21 of the device 20 and connects the image with the first screen 31; and a third optical path that is reflected by the reflecting mirror 22 of the split device 20 and connects the image to the second screen 32; There is.

  The first screen 31 and the second screen 32 are arranged at the same distance from the projector 10, but the third screen 33 has a distance from the projector 10 of the first screen 31 and the second screen. 32. That is, the second optical path and the third optical path are equidistant, but the first optical path is shorter than the second and third optical paths.

  For this reason, the focus of these three screens 31, 32, and 33 cannot be adjusted simultaneously.

  Therefore, in the first example of the present embodiment, the focus adjustment lens 60 is disposed between the third screen 33 and the video dividing device 20 in the first optical path. The focus adjusting lens 60 shortens the focal length, and for example, a convex lens is used.

  Accordingly, even when the first screen 31 and the second screen 32 are focused, the focus of the third screen 33 can be focused by the focus adjustment lens 60.

  In the first example, the case where the focus adjustment lens 60 is disposed in the first optical path has been described as an example. However, the focus adjustment lens 60 is disposed in the second optical path or the third optical path. You can also In this case, as the focus adjustment lens 60, a lens that extends the focal length, for example, a concave lens can be used.

  Further, in the first example, the case where the focus adjustment lens 60 is used as the focal length adjustment unit has been described as an example, but other types can be used as the focal length adjustment unit. For example, after arranging two reflecting mirrors in the first optical path, reflecting the image output from the image dividing device 20 on one of the two reflecting mirrors, and further reflecting the image on the other, By projecting an image on the third screen 33, the optical path is extended. Even in this case, the third screen 33 can be focused.

  FIG. 16A shows the configuration of the vehicle display system in the second example of the present embodiment. FIG. 16A corresponds to FIG. FIG. 16B shows an enlarged view of the broken line area A in FIG.

  In the first example described above, the case where the focus adjustment lens 60 is arranged separately from the video dividing device 20 has been described as an example. However, as in the second example, the video dividing device 20 has a focus adjustment function. You can also have it.

  In the second example, as shown in FIG. 16B, the video dividing device 20 is composed of reflecting mirrors 26 and 27. The reflecting mirrors 26 and 27 have a curved mirror surface (convex surface) and have a lens effect.

  As a result, even when the focus is on the third screen 33, the first screen 31 and the second screen 32 can be focused by the reflecting mirrors 26 and 27.

  In the second example of the present embodiment, the video dividing device 20 is thus provided with a focus adjustment function. Thereby, the focus adjustment lens 60 can be omitted, and the vehicle display system can be simplified as compared with the first example.

  In the present embodiment, the case where a plurality of screens cannot be placed at the same distance from the projector 10 has been described. However, as described below, even when the sizes of the plurality of screens are different from each other, The embodiment is effective.

  That is, in each of the above-described embodiments, the case where the screen sizes of the first screen 31 and the second screen 32 are the same as illustrated in FIGS. 2B and 10 has been described as an example. The sizes of these screens can be different.

  FIG. 17 shows a front view of the instrument panel 50 when the first screen 31 and the second screen 32 have different sizes. As shown in FIG. 17, the first screen 31 can be made larger than the second screen 32. In FIG. 17, the configuration is the same as that of the other embodiments except that the screen size is different.

  As described above, when the sizes of the first screen 31 and the second screen 32 are different from each other, in addition to the focus adjustment lens 60, a lens for adjusting the size of the image, etc., although not shown. Are arranged between the screens 31 and 32 and the video dividing device 20. Alternatively, the image dividing device 20 is provided with an image enlargement / reduction function. As a result, the image can be enlarged or reduced in accordance with the size of the screen.

  However, in this case, the focal points on the first screen 31 and the second screen 32 cannot be adjusted simultaneously. Therefore, as in the present embodiment, it is effective to dispose a focus adjustment lens 60 or to provide the image dividing device 20 with a focus adjustment function.

(Fifth embodiment)
In the present embodiment, a case will be described in which, in the vehicle display system having the video dividing device 20, the video output from the projector 10 is displayed without being divided and is concentrated on one screen.

  18 (a), (b), and (c) show the configuration of the vehicle display system of the present embodiment. 18A is an enlarged view of the projector 10, the video dividing device 20, the first screen 31, and the second screen 32 in FIG.

  In the present embodiment, the vehicle display system (see FIG. 14) described in the second example of the third embodiment will be described as an example. In the present embodiment, in the vehicle display system described in the second example of the third embodiment, the video dividing device 20 is mounted on a slide mechanism provided at the installation location of the video dividing device 20. The video dividing device 20 can be moved by a motor (not shown) provided in the video dividing device 20. The motor is disposed at a position that does not interfere with the image projection path, that is, in a direction perpendicular to the paper surface.

  Usually, as described in the second example of the third embodiment, the image displayed on the first screen 31 and the image displayed on the second screen 32 are separately displayed on the liquid crystal panel 12 of the projector 10. Then, the image is divided by the reflecting mirror 21 and the reflecting mirror 22 of the image dividing device 20 so that the divided images are displayed on the first screen 31 and the second screen 32, respectively.

  On the other hand, when displaying an image only on one screen, for example, the first screen 31, as shown in FIG. 18B, the image dividing device 20 is moved rightward in the drawing. In FIG. 18B, the broken line indicates the position of the video dividing device 20 before the movement, and the solid line indicates the position of the video dividing device 20 after the movement in the arrow direction.

  Then, an image projected on the first screen 31 is displayed on the entire liquid crystal panel 12 in the projector 10. Further, the size of the image is adjusted so that the projection lens 14 of the projector 10 projects all the image output from the projector 10 onto the reflecting mirror 21.

  Thereby, the image projected from the projector 10 can be displayed only on the first screen 31. In addition, since the image displayed on the entire liquid crystal panel 12 is projected onto the first screen 31, the liquid crystal panel 12 is compared with the case where the image is displayed on the first and second screens 31 and 32. The use area is wide, and the displayed video can be high definition (high image quality).

  In general, various information can be viewed from a plurality of screens while traveling, and there is a demand for viewing high-definition (high image quality) images such as movies when stopped.

  On the other hand, in this embodiment, as described above, the video dividing device 20 can move so as to display all the videos output from the video dividing device 20 on the first screen 31.

  When displaying an image only on the first screen 31, the image dividing device 20 is moved so that one image is displayed on the entire liquid crystal panel 12 in the projector 10.

  Therefore, according to the present embodiment, various information can be displayed on the plurality of screens 31 and 32 during traveling, and a high-definition image can be displayed on the first screen 31 when stopped.

  Although FIG. 18B shows a case where the video dividing device 20 is moved, the projector 10 can be moved instead of the video dividing device 20 as shown in FIG.

  In this case, when displaying an image only on the first screen 31, the projector 10 is moved in the left direction in the figure as shown in FIG. In FIG. 18C, the broken line indicates the position of the projector 10 before the movement, and the solid line indicates the position of the projector 10 after the movement in the arrow direction.

  Although not shown, both the projector 10 and the video dividing device 20 can be moved.

It is a figure which shows the structure of the display system for vehicles in the 1st example of 1st Embodiment. It is a figure which shows arrangement | positioning of the projector 10, the video division | segmentation device 20, the 1st screen 31, and the 2nd screen 32 in FIG. 1, (a) is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle. (B) is a figure when the instrument panel 50 in a vehicle is seen from the vehicle rear toward the vehicle front. It is a figure which shows the image | video displayed on the liquid crystal panel 12 of the projector 10 in FIG. It is a figure which shows the structure of the image | video division | segmentation device 20 in FIG. It is a figure which shows the structure of the display system for vehicles in the 2nd example of 1st Embodiment, and is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle. It is a figure which shows the structure of the display system for vehicles in the 3rd example of 1st Embodiment, and is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle. It is a figure which shows the structure of the display system for vehicles in the 4th example of 1st Embodiment, (a) is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle, (b) is from a vehicle back. It is a figure when the instrument panel 50 in a vehicle is seen toward the vehicle front, (c) is a figure when the projector 10, the 1st screen 31, etc. are seen from the vehicle upper direction. It is a figure which shows the structure of the display system for vehicles in the 5th example of 1st Embodiment, (a) is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle, (b) is from the vehicle upper direction. It is a figure when the projector 10, the 1st screen 31, etc. are seen. It is a figure which shows the structure of the display system for vehicles in the 1st example of 2nd Embodiment, and is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle. It is a figure when the instrument panel 50 in a vehicle is seen from the vehicle back toward the vehicle front. It is a figure which shows the structure of the display system for vehicles in the 2nd example of 2nd Embodiment, (a) is a figure when seeing the projector 10, the 1st screen 31, etc. from vehicle upper direction, (b) These are figures when the inside of a vehicle is seen from the lateral direction of the vehicle. (A) is a top view of the video dividing device 20 in FIG. 11, and (b) is a front view of the video dividing device 20 in FIG. It is a figure which shows the structure of the display system for vehicles in the 1st example of 3rd Embodiment, and is a figure when the inside of a vehicle is seen from the horizontal direction of a vehicle. It is a figure which shows the structure of the display system for vehicles in the 2nd example of 3rd Embodiment, and is a figure when seeing the inside of a vehicle from the horizontal direction of a vehicle. It is a figure which shows the structure of the display system for vehicles in the 1st example of 4th Embodiment, and is a figure when the projector 10, the 1st screen 31, etc. are seen from the vehicle upper direction. (A) is a figure which shows the structure of the display system for vehicles in the 2nd example of 4th Embodiment, and is a figure when the projector 10, the 1st screen 31, etc. are seen from the vehicle upper direction. (B) is an enlarged view of the area A in (a). It is a figure which shows the 1st screen 31 in 4th Embodiment, and the 2nd screen 32, Comprising: It is a figure when seeing the instrument panel 50 in a vehicle toward the vehicle front from the vehicle rear. (A) is a figure which shows the structure of the display system for vehicles in 5th Embodiment, (b) is a figure when the image | video division | segmentation device 20 in (a) moves, (c), It is a figure when the projector 10 in (a) moves. It is a figure which shows a part of conventional control system for vehicles. It is a figure which shows the internal structure of a projector. It is a figure for demonstrating a subject, and is a figure when the instrument panel 50 in a vehicle is seen from the vehicle rear toward the vehicle front. It is a figure for demonstrating a subject, and is a figure which shows the image | video displayed on the liquid crystal panel 12 in FIG.

Explanation of symbols

10 ... projector, 12 ... liquid crystal panel,
12c: An area where no image is displayed on the liquid crystal panel 12,
20 ... Video dividing device, 21, 22 ... Reflector, 23, 24 ... Prism,
26, 27 ... lenticular reflector, 31 ... first screen,
32 ... second screen, 33 ... third screen,
41 ... Control circuit, 42 ... Navigation device, 43 ... Audio equipment,
44 ... Air conditioner, 50 ... Instrument panel,
60 ... Focus adjustment lens.

Claims (10)

Video projection means (10) mounted in a vehicle and projecting an image on a display (31, 32, 33);
An image dividing means (mounted in the vehicle) that optically divides an image output from the image projection means (10) into a plurality of images, and sets the projection directions of the divided images to different directions. 20)
By disposing each of the plurality of divided images in the vehicle at locations where they are separated from each other and projected by the plurality of images divided by the image dividing means (20), A vehicle display system comprising a plurality of indicators (31, 32, 33) for displaying a plurality of divided images, respectively. The image projection means (10) and the image division means (20) are arranged outside an instrument panel (50) in the vehicle, and the plurality of indicators (31, 32, 33) are of a reflection type. The vehicle display system according to claim 1, wherein the vehicle display system is provided. The image projection means (10) and the image division means (20) are arranged inside an instrument panel (50) in the vehicle, and the plurality of indicators (31, 32, 33) are transmissive types. The vehicle display system according to claim 1, wherein the vehicle display system is arranged on the instrument panel (50). The image projecting means (10) and the image dividing means (20) are arranged inside an instrument panel (50) in the vehicle,
As the plurality of displays (31, 32, 33), a reflection type display and a transmission type display are used, and the plurality of displays (31, 32, 33) are arranged on the instrument panel. The vehicular display system according to claim 1, wherein the vehicular display system is arranged at (50). Of the reflective and transmissive displays (31, 32, 33), the reflective display (31) is disposed on the side away from the driver, and the transmissive display (32) Arranged on the side closer to the driver,
The image projection means (10) and the image division means (20) are arranged between the reflective display (31) and the transmissive display (32). Item 5. The vehicle display system according to Item 4. The vehicle display system according to any one of claims 3 to 5, wherein the transmissive display device (32) is provided with a touch panel (40) on a surface on the driver side. The vehicle display system according to any one of claims 1 to 6, wherein the image dividing means (20) is configured by a mirror (21, 22) or a prism (23, 24). The focus adjusting means (60) is arranged in a projection path of an image from the image dividing means (20) to the plurality of displays (31, 32, 33). The vehicle display system according to any one of 7. The vehicle display system according to any one of claims 1 to 7, wherein the image dividing means (20, 26, 27) has a focus adjustment function. At least one of the image projecting means (10) and the image dividing means (20) displays all the images output from the image projecting means (10) with the plurality of displays (31, 32, 33). The vehicle display system according to any one of claims 1 to 9, wherein the vehicle display system can be moved so as to be displayed on one of them.

Images