JP5962595B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device that displays an image representing vehicle information on a screen by projecting display light emitted from a projector onto the screen.

  Patent Document 1 discloses a display device including a projector that emits display light of an image representing vehicle information such as a vehicle speed, and a screen that displays the image by projecting the emitted display light. . The screen according to this display device is formed in an uneven shape in the direction in which the image is visually recognized, so that the image is visually recognized in three dimensions.

JP 2007-326419 A

  In this type of display device, it is desirable to cause the user to have an illusion as if a virtual object (for example, a vehicle speed meter device) represented by the image exists. However, the conventional display device only expresses a three-dimensional effect depending on the uneven shape of the screen, and the three-dimensional effect has a limit, and there is room for improvement.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular display device that can realistically express the stereoscopic effect of a virtual object represented by an image and visually recognize the virtual object in three dimensions. There is.

  The present invention employs the following technical means to achieve the above object. It should be noted that the reference numerals in parentheses described in the claims and in this section indicate the correspondence with the specific means described in the embodiments described later as one aspect, and the technical scope of the present invention It is not limited.

  One of the disclosed inventions includes a projector (2) that emits display light of an image representing vehicle information, and a screen (10) that displays an image by projecting the display light. It is formed in a shape having convex portions (12, 15, 15 ′) projecting toward the front side in the direction in which the image is visually recognized, and concave portions (11a, 14b, 14a, 14a ′) recessed on the back side, Of the display light, the display light projected on the first part which is one of the convex part and the concave part is set to be higher in luminance than the display light projected on the second part which is the other. And

  According to this, the brightness of the display light projected on the convex part and the concave part of the screen is different from each other, whereby the sense of depth of the convex part and the concave part can be emphasized. Therefore, the stereoscopic effect of the virtual object can be realistically represented by the image displayed on the uneven portion of the screen, and the virtual object can be visually recognized in three dimensions.

1 is a cross-sectional view schematically showing an overall configuration of a vehicle display device in a first embodiment of the present invention. The front view of the meter image displayed on the screen of FIG. III-III sectional drawing of FIG. IV-IV sectional drawing of FIG. The front view of the meter image which shows the state which turned off the bar image in 1st Embodiment. The front view of the meter image which shows the display state by 1st Embodiment in physical quantity display mode. The figure which shows the cross-sectional shape of a bar convex part in 2nd Embodiment of this invention.

  A plurality of modes for carrying out the invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. When only a part of the configuration is described in each mode, the other modes described above can be applied to the other parts of the configuration. Not only combinations of parts that clearly show that combinations are possible in each embodiment, but also combinations of the embodiments even if they are not explicitly stated unless there is a problem with the combination. Is also possible.

(First embodiment)
As shown in FIG. 1, an instrument panel 1 is disposed below the front windshield W in the interior of the vehicle V. The instrument panel 1 is provided with a vehicle display device that will be described in detail later. In addition, the arrow which shows the up-down front-back direction in FIG. 1 shows the up-down-front-back direction of a vehicle in the state in which the display apparatus for vehicles was installed in the instrument panel 1. FIG.

  The vehicular display device includes a projector 2, a reflecting mirror 3, and a screen 10 described below. The projector 2 emits display light P1 of an image representing vehicle information. The projector 2 includes a magnifying lens 2a, and an angle at which the display light P1 spreads is adjusted by the magnifying lens 2a. Specific examples of the “vehicle information” represented by the above image include vehicle speed, engine rotation speed, automatic transmission shift range, fuel remaining amount, engine coolant temperature, various warning information, and the like.

  The reflecting mirror 3 reflects the display light P <b> 1 emitted from the projector 2 toward the screen 10. In the example of FIG. 1, the reflecting surface of the reflecting mirror 3 has a planar shape. The screen 10 is a resin-made plate having translucency, and is formed in a shape having irregularities, which will be described in detail later.

  The display light P <b> 2 reflected by the reflecting mirror 3 is transmitted from the opposite side (back side) to the near side of the screen 10 with respect to the viewer M. The display light P3 transmitted through the screen 10 enters the eyes of the user who is the viewer M. That is, the image displayed on the screen 10 is visually recognized by the user by the projection of the display light P <b> 2 on the screen 10.

  The projector 2 receives a video signal output from the electronic control unit (meter ECU 4), and the projector 2 emits display light P1 based on the video signal. The display light P1 (image) changes according to the vehicle information. That is, the video signal is a moving image signal, and the image displayed on the screen 10 is a moving image.

  The vehicle V is equipped with an electronic control device (engine ECU 5) that controls the operation of the engine. The engine ECU 5 calculates vehicle information such as a vehicle speed, a remaining amount of fuel, and an engine coolant temperature based on detection values of various sensors such as a crank angle sensor, a fuel level sensor, and a water temperature sensor. The engine ECU 5 controls the operation of the engine (internal combustion engine) based on the calculated vehicle information, the operation details of the vehicle driver, and the like. Further, the engine ECU 5 determines whether or not an abnormality has occurred in various components such as the engine based on the vehicle information, and when determining that an abnormality has occurred, the engine ECU 5 outputs a signal (abnormal signal) to that effect. It transmits to meter ECU4.

  Meter ECU4 acquires various vehicle information from engine ECU5, and acquires the abnormal signal output from engine ECU5 and other electronic controller which is not illustrated. The meter ECU 4 generates a video signal for displaying a moving image according to the acquired vehicle information and the abnormality signal, and outputs the video signal to the projector 2. The meter ECU 4 includes a storage unit that stores data required for generating a video signal, and an arithmetic processing device that executes various arithmetic processes such as a video signal generation process and a communication process with the engine ECU 5.

  As shown in FIG. 2, the image displayed on the screen 10 includes an image (meter image 20) representing a meter device configured by combining a plurality of components. The “plural parts” are a scale plate 21 (scale plate image), a pointer 22 (pointer image), and a dial 23 (dial image) described below. The scale plate 21, the pointer 22 and the dial 23 are not actual objects but images. In the following description, these component images are simply referred to as a scale plate 21, a pointer 22, and a dial 23.

  The scale plate 21 has a plurality of scales 21a (scale images) and numbers 21b (number images). These scales 21a and numbers 21b are also images, not actual printed matter. In the following description, these are simply referred to as scales 21a and numbers 21b. The pointer 22 rotates and indicates the scale 21a.

  The image displayed on the screen 10 includes a background image 25. The background image 25 is located around the meter image 20. The background image 25 includes a plurality of ambient images 26. The ambient image 26 is arranged on both the left and right sides of the meter image 20. A plurality of ambient images 26 are arranged at equal intervals along the arc of the scale slope 21. Whereas the dial 23 has an annular shape, the ambient image 26 has a bar shape extending in a predetermined direction (left and right direction in FIG. 2) when viewed from the viewer M side. Note that the ambient image 26 may be switched to the high-intensity image 27 and the low-intensity image 28 shown in FIG. 6, and this will be described in detail later with reference to FIG.

  As shown in FIGS. 3 and 4, the screen 10 has a plate shape with a uniform thickness in which an annular convex portion 12, an inner inclined portion 12 a and an outer inclined portion 12 b, and a rod-shaped convex portion 15 and an inclined portion 15 a are formed. is there. Furthermore, the screen 10 has a shape having a central portion 11 and an outer peripheral portion 14 described below. The central portion 11 constitutes the central portion of the screen 10 and is located on the inner peripheral side of the annular convex portion 12. The outer peripheral part 14 is located on the outer peripheral side of the annular convex part 12. The central portion 11 and the outer peripheral portion 14 have a flat shape that extends perpendicular to the viewing direction. Since the center part 11 and the outer peripheral part 14 are located farther from the viewer M than the annular convex part 12, it can be said that they are concave parts. In the present embodiment, the direction perpendicular to the screen 10 is the viewing direction.

  The annular convex portion 12, the inner inclined portion 12a, and the outer inclined portion 12b have a shape protruding so as to protrude toward the viewer M (front side) and an annular shape when viewed from the viewer M side. The inner inclined portion 12a has a shape that is inclined so as to gradually rise from the outer peripheral end of the central portion 11 toward the viewer M side. The annular convex portion 12 has a flat shape extending in the radial direction from the outer peripheral end of the inner inclined portion 12a. The outer inclined portion 12b has a shape inclined so as to gradually rise from the inner peripheral end of the outer peripheral portion 14 toward the viewer M side.

  The rod-like convex portion 15 and the inclined portion 15a are shaped to protrude so as to protrude toward the front side, and have a rod-like shape extending in the left-right direction when viewed from the viewer M side, and are located on the radially outer side of the outer inclined portion 12b. To do. The inclined portion 15a has a shape inclined so as to gradually rise from a predetermined portion of the outer peripheral portion 14 toward the viewer M side. The rod-shaped convex part 15 is a flat shape that extends in parallel with the outer peripheral part 14 from the upper end of the inclined part 15a.

  The “convex portion” described in the claims corresponds to the annular convex portion 12 and the rod-shaped convex portion 15. The concave portion corresponding to the annular convex portion 12 is a portion adjacent to the inner inclined portion 12a and the outer inclined portion 12b in the central portion 11 and the outer peripheral portion 14 (FIG. 2 and FIG. 2). This corresponds to reference numerals 11a and 14b in FIG. Moreover, the recessed part corresponding to the rod-shaped convex part 15 is corresponded to the part (refer the code | symbol 14a in FIG. 2 and FIG. 4) located between the some rod-shaped convex parts 15 among the outer peripheral parts 14. FIG. The “connecting portion” described in the claims and corresponding to the annular convex portion 12 corresponds to the inner inclined portion 12a and the outer inclined portion 12b. Moreover, the connection part corresponding to the rod-shaped convex part 15 is equivalent to the inclination part 15a.

  Returning to the description of FIG. 2, the dial 23 has an annular shape surrounding the plurality of scales 21a. The scale plate 21 is displayed on the central portion 11 and the outer peripheral portion 14 of the screen 10. The pointer 22 is displayed on the central portion 11, and the dial 23 is displayed on the annular convex portion 12, the inner inclined portion 12a, and the outer inclined portion 12b. Therefore, the dial 23 is visually recognized so as to exist on the near side of the scale plate 21.

  The boundary line between the outer inclined portion 12b and the outer peripheral portion 14 is positioned on the outer peripheral line of the dial 23, and the boundary line between the inner inclined portion 12a and the central portion 11 is positioned on the outer peripheral line on the inner peripheral side of the dial 23. . In short, the boundary lines between the central part 11 and the outer peripheral part 14 and the inclined parts 12a and 12b coincide with the boundary lines between the component images.

  And the center part 11 and the outer peripheral part 14 of the screen 10 are displayed by the same color, and the cyclic | annular convex part 12 and the inclination parts 12a and 12b are displayed by the color different from the color. This facilitates visual recognition that the scale plate 21 exists so as to straddle the dial 23 in the radial direction, and facilitates visual recognition so that the dial 23 exists on the near side of the scale plate 21. The inner inclined portion 12a and the outer inclined portion 12b are displayed in gradation so as to gradually change from the color of the central portion 11 and the outer peripheral portion 14 to the color of the annular convex portion 12 as the annular convex portion 12 is approached.

  The display light projected on the annular convex part 12 is set to have higher luminance than the display light projected on the concave parts 11a and 14b. That is, the dial 23 is an image with higher brightness than the scale slope 21. The display light projected on the inner inclined portion 12a and the outer inclined portion 12b is set so that the luminance gradually changes so as to increase in brightness as it approaches the annular convex portion 12. That is, the images of the inner inclined portion 12a and the outer inclined portion 12b are displayed in gradation. In this specification, “luminance” is a value obtained by dividing the luminous intensity by the light source area. The “luminosity” is a value obtained by integrating a value obtained by multiplying the radiation intensity for each wavelength by the relative visibility for each wavelength. As an example of the relative luminous efficiency, there is a standard luminous efficiency determined by the International Metrology General Assembly.

  The ambient image 26 is displayed on the rod-like convex portion 15 and the inclined portion 15a. The boundary line between the inclined portion 15 a and the outer peripheral portion 14 (recessed portion 14 a) is located on the outer peripheral line of the ambient image 26. And the bar-shaped convex part 15 and the inclination part 15a are displayed by the color different from the recessed part 14a. This facilitates visual recognition so that the ambient image 26 exists on the near side of the background image 25. The inclined portion 15a is displayed in gradation so as to gradually change from the color of the concave portion 14a to the color of the rod-shaped convex portion 15 as it approaches the rod-shaped convex portion 15.

  The display light projected on the rod-shaped convex portion 15 is set to have higher luminance than the display light projected on the concave portion 14a. That is, the ambient image 26 is an image having a higher brightness than the background image 25. The display light projected on the inclined portion 15a is set so that the luminance gradually changes so as to increase in luminance as it approaches the rod-like convex portion 15. That is, the image of the inclined portion 15a is displayed in gradation. In FIGS. 2 and 6, illustration of the image displayed on the inclined portion 15a is omitted.

  The meter ECU 4 generates a video signal according to the acquired vehicle information. Specifically, the meter ECU 4 generates a video signal so that the pointer 22 rotates to a position indicating the scale 21a according to the traveling speed of the host vehicle (hereinafter simply referred to as the vehicle speed). Further, the meter ECU 4 generates a video signal so as to indicate a fuel remaining amount and an engine coolant temperature, which will be described in detail later (see FIG. 6). Furthermore, meter ECU4 produces | generates a video signal according to the presence or absence of an abnormal signal.

  Hereinafter, changes in the video signal according to vehicle information and presence / absence of an abnormality signal, that is, changes in the meter image 20 and the background image 25 will be described with reference to FIGS.

  These images 20 and 25 are displayed by switching between the warning display mode shown in FIGS. 2 and 5 and the physical quantity display mode shown in FIG. Regardless of the display mode, the meter image 20 has a common display content, and the pointer 22 rotates to display the vehicle speed.

  When an abnormal signal occurs, the mode is switched to the warning display mode, and an ambient image 26 is displayed on the plurality of bar-shaped convex portions 15. Specifically, the plurality of ambient images 26 are repeatedly turned on (see FIG. 2) and turned off (see FIG. 5). As described above, when an abnormal signal is generated, the display state of the rod-shaped convex portion 15 is changed to warn the vehicle occupant that an abnormality has occurred. When the ambient image 26 is turned off, an image having the same color as that of the outer peripheral portion 14 is displayed on the rod-like convex portion 15.

  On the other hand, when an abnormal signal has not occurred, the physical quantity display mode shown in FIG. 28 is displayed. The high brightness image 27 is displayed in a color different from that of the background image 25 displayed in the recess 14 a and is displayed with a higher brightness than the background image 25. The low-brightness image 28 is displayed in a different color from the background image 25 and the high-brightness image 27, and is displayed with a lower brightness than the high-brightness image 27.

  Among the plurality of rod-like convex portions 15 located on the left side of the meter image 20, the high-luminance image 27 is displayed on the number of rod-like convex portions 15 (see the hatched lines in FIG. 6) corresponding to the remaining amount of fuel. A low luminance image 28 is displayed on the convex portion 15. Further, in the vicinity of the background image 25 where these images 27 and 28 are displayed, a character 25a for notifying the remaining amount of fuel is displayed. Therefore, the user can recognize the remaining amount of fuel by visually recognizing the number of high-luminance images 27 located on the left side of the meter image 20.

  Among the plurality of rod-shaped convex portions 15 located on the right side of the meter image 20, the high-luminance image 27 is displayed on the number of rod-shaped convex portions 15 (see the hatched lines in FIG. 6) corresponding to the engine coolant temperature. A low-brightness image 28 is displayed on the bar-shaped convex portion 15. Further, in the vicinity of the background image 25 where these images 27 and 28 are displayed, a character 25b for notifying the engine coolant temperature is displayed. Therefore, the user can recognize the engine coolant temperature by visually recognizing the number of high-luminance images 27 located on the right side of the meter image 20.

  In short, the vehicle display device of the present embodiment described above includes the features listed below. And the effect demonstrated below is exhibited by each of those characteristics.

<Feature 1>
In the present embodiment, the annular convex portion 12 and the rod-shaped convex portion 15 correspond to the “first portion that is one of the convex portion and the concave portion” recited in the claims, and the concave portions 11a, 14b, and 14a positioned around the convex portion and the concave portion 11a. Corresponds to “the second part which is the other”. The display light projected on the first portion is set to have a higher luminance than the display light projected on the second portion. In other words, portions of the screen 10 at the same position in the viewing direction are displayed with the same luminance, and portions at different positions are displayed with different luminance.

  Therefore, the user can surely visually recognize the depth of the unevenness formed on the screen 10, that is, the height of the protrusions 12 and 15 in the viewing direction. Therefore, it is possible to promote stereoscopic vision, and as a result, it is possible to promote the illusion of the user as if a virtual object by the meter image 20 or the background image 25 exists.

<Feature 2>
In the present embodiment, the display mode of the image displayed on the first portion 15 is changed. According to this, since the display mode of the image is changed in the first portion 15 in which the stereoscopic effect of the virtual object is realistically expressed, the change is easily visible and can be displayed conspicuously.

  Furthermore, in this embodiment, a warning is given to the vehicle occupant by the change in the display mode. Specifically, a warning is given to the vehicle occupant by changing the display mode of the ambient image 26 displayed on the rod-shaped convex portion 15 (first portion). According to this, since the warning is notified at the three-dimensional part in which the unevenness is formed in the screen 10, it is possible to promote the user to immediately notice that the warning is being notified.

<Feature 3>
In the present embodiment, a plurality of first portions 15 are arranged side by side. And the display mode of the image with respect to each of the some 1st part 15 is changed corresponding to the change of the physical quantity of a vehicle state.

  Specifically, among the plurality of rod-shaped convex portions 15 (first portion), an image (high luminance image 27) displayed on the number of rod-shaped convex portions 15 corresponding to the remaining fuel amount and temperature (a predetermined physical quantity value). Are displayed in a manner different from that of the other rod-shaped convex portions 15 (low luminance image 28). This notifies the vehicle occupant of the fuel remaining amount and temperature (a predetermined physical quantity value). In other words, the number of high-brightness images 27 displayed at a higher brightness than the low-brightness images 28 is increased or decreased according to a predetermined physical quantity value.

  Therefore, according to the present embodiment having such a configuration, the physical quantity is notified at the three-dimensional portion of the screen 10 where the irregularities are formed, so that the user can easily see the change in the physical quantity.

<Feature 4>
In the present embodiment, a plurality of first portions 15 are arranged side by side. Then, setting is made so as to switch between changing the image display mode for each of the plurality of first portions 15 and changing the image display mode for the first portion 15 in response to the change in the physical quantity of the vehicle state. Has been.

  Specifically, the physical quantity display mode and the warning display mode are switched and displayed. In the physical quantity display mode, an image displayed on the bar-shaped convex portions 15 corresponding to a predetermined physical quantity among the plurality of bar-shaped convex portions 15 (first portion) is displayed in a mode different from the other bar-shaped convex portions 15. In the warning display mode, by changing the display mode of the ambient image 26 displayed on the plurality of rod-shaped convex portions 15 (first portion), the passenger is warned that an abnormality has occurred in any of the vehicles. .

  According to this, both the physical quantity display mode and the warning display mode can be displayed using the same uneven shape portion of the screen 10. For this reason, it is possible to eliminate the need for separately forming a dedicated uneven shape for displaying a physical quantity and a dedicated uneven shape for displaying a warning.

<Feature 5>
In the present embodiment, the screen 10 includes connecting portions 11a, 14b, and 15a that connect the convex portions 12 and 15 and the concave portions 11a, 14b, and 14a. And the display light projected on the connection parts 11a, 14b, 15a is projected on the brightness | luminance of the display light projected on the convex parts 12, 15 (1st part), and the recessed parts 11a, 14b, 14a (2nd part). The luminance is set so as to change with the luminance of the display light.

  Therefore, it can be promoted that the user can surely visually recognize the depth of the unevenness formed on the screen 10, that is, the height of the protrusions 12 and 15 in the viewing direction.

(Second Embodiment)
In the first embodiment, the rod-shaped convex portion 15 and the concave portion 14a positioned around the rod-shaped convex portion 15 are formed in a flat shape, and have a cross-sectional shape extending linearly as shown in FIG. On the other hand, in the present embodiment shown in FIG. 7, the rod-like convex portion 15 ′ and the concave portion 14a ′ are formed in a curved cross-sectional shape. Then, the image of the apex portion of the rod-like convex portion 15 ′ is displayed with the highest luminance, and the luminance of the other portion of the rod-like convex portion 15 ′ is gradually changed in the same manner as the inclined portion 15a ′. it's shown.

  Also in this embodiment, similarly to the first embodiment, the display light projected on the rod-shaped convex portion 15 ′ (first portion) is more than the display light projected on the concave portion 14a ′ (second portion). High brightness is set. Therefore, the user can surely visually recognize the depth of the unevenness formed on the screen 10, that is, the height of the protrusions 12 and 15 in the viewing direction.

(Other embodiments)
The present invention is not limited to the description of the above embodiment, and may be modified as follows. Moreover, you may make it combine the characteristic structure of each embodiment arbitrarily, respectively.

  In each of the above embodiments, the convex portions 12 and 15 are applied as the first portion, and the display light projected on the convex portions 12 and 15 has higher brightness than the display light projected on the concave portions 11a, 14b, and 14a. Is set. On the other hand, the concave portions 11a, 14b, and 14a are applied as the first portion, and the display light projected on the concave portions 11a, 14b, and 14a is set to have higher brightness than the display light projected on the convex portions 12 and 15. You may make it do. Also by this, compared with the case where the concave portions 11a, 14b, 14a and the convex portions 12, 15 are displayed with the same luminance, the user can surely visually recognize the raised height of the convex portions 12, 15 in the viewing direction.

  In each of the above embodiments, the rod-like convex portion 15 is disposed inside the annular convex portion 12. In other words, the ambient image 26, the high luminance image 27, and the low luminance image 28 are displayed outside the display area of the meter image 20. On the contrary, the ambient image 26, the high luminance image 27 and the low luminance image 28 may be displayed in the display area of the meter image 20.

  In the first embodiment, the ambient image 26 is displayed so as to be repeatedly turned on and off in the warning display mode. On the other hand, the ambient image 26 may be displayed so that the luminance and color of the ambient image 26 are repeatedly changed at a predetermined cycle without turning off the ambient image 26.

  In the first embodiment, in the physical quantity display mode, the high luminance image 27 is displayed on the number of bar-shaped convex portions 15 corresponding to the physical quantity, and the low luminance image 28 is displayed on the other rod-shaped convex portions 15. On the other hand, the display of the low-brightness image 28 on the other rod-shaped convex portions 15 may be abolished, and the other rod-shaped convex portions 15 may be turned off without projecting display light.

  In the first embodiment, the display on the dial 23 does not change in either the warning display mode or the physical quantity display mode. On the other hand, for example, in the warning display mode, the dial 23 may be displayed in a mode different from the physical quantity display mode. For example, in the warning display mode, the dial 23 is displayed with higher brightness than in the physical quantity display mode. Alternatively, the display color of the dial 23 may be changed according to the mode, such as displaying the dial 23 in blue in the physical quantity display mode and displaying the dial 23 in red in the warning display mode. Alternatively, the dial 23 may be turned on in the physical quantity display mode, and the dial 23 may be blinked in the warning display mode.

  In the first embodiment, the image of the bar-shaped convex portion 15 is displayed in the same color in both the warning display mode and the physical quantity display mode. On the other hand, the ambient image 26 in the warning display mode and the high-intensity image 27 or the low-intensity image 28 in the physical quantity display mode may be displayed with different colors or different luminances.

  In the first embodiment, the display light P <b> 1 emitted from the projector 2 is reflected by the reflecting mirror 3 and is incident on the screen 10. On the other hand, the reflecting mirror 3 may be eliminated and the display light P1 emitted from the projector 2 may be directly incident on the screen 10.

  In each of the above embodiments, the image displayed by the vehicle display device is the meter image 20. On the other hand, the image according to the present invention is not limited to the meter image 20, and may be a map image by a navigation device, for example. In this case, for example, the position of the host vehicle on the map corresponds to the vehicle information.

  -In the said 1st Embodiment, although the part which displays the dial 23 among the screens 10 is protruded to the viewer M side, you may comprise so that this part may be dented in the other side of the viewer M. . That is, the unevenness of the screen 10 may be reversed.

  In the example shown in FIG. 1, the reflecting surface of the reflecting mirror 3 has a planar shape, but the reflecting mirror 3 may be a magnifying mirror that magnifies and reflects the display light P1.

  In the first embodiment, the meter ECU 4 includes a storage unit that stores data required for generating a video signal and an arithmetic processing unit that generates the video signal. On the other hand, the projector 2 may include these storage means and the arithmetic processing unit.

  In the first embodiment, the warning is given to the vehicle occupant by changing the display mode of the image with respect to the first portion 15. On the other hand, contents other than the warning may be notified by the change in the display mode.

  In the first embodiment, the number of first portions 15 that change the display mode is changed according to a predetermined physical quantity. On the other hand, the value of a predetermined physical quantity may be expressed by changing the display mode of the first portion 15 without changing the number.

  2 ... projector, 10 ... screen, 11a, 14b ... concave portion, 14a, 14a '... (concave portion (second portion)), 12 ... annular convex portion (convex portion), 12a ... inner inclined portion (connecting portion), 12b ... Outer inclined portion (connecting portion), 15, 15 ′... Rod-shaped convex portion (convex portion (first portion)), 15a, 15a ′... Inclined portion (connecting portion).

Claims (5)

A projector (2) for emitting display light of an image representing vehicle information;
A screen (10) for displaying the image by projecting the display light;
With
The screen has a shape having convex portions (12, 15, 15 ′) protruding toward the front side in the direction in which the image is visually recognized and concave portions (11a, 14b, 14a, 14a ′) recessed on the back side. Formed,
Of the display light, the display light projected on the first portion which is one of the convex portion and the concave portion is set to be higher in luminance than the display light projected on the second portion which is the other. A display device for a vehicle.   The vehicle display device according to claim 1, wherein a display mode of an image displayed on the first portion (15) is changed. A plurality of the first portions (15) are arranged side by side,
The vehicle display device according to claim 1, wherein a display mode of the image for each of the plurality of first portions is changed in response to a change in a physical quantity in a vehicle state. A plurality of the first portions (15) are arranged side by side,
Switching between changing the display mode of the image for each of the plurality of first portions and changing the display mode of the image for the first portion in response to a change in the physical quantity of the vehicle state. The vehicle display device according to claim 1, wherein the vehicle display device is set as follows. The screen has a connecting portion (12a, 12b, 15a, 15a ′) that connects the convex portion and the concave portion,
The display light projected on the connecting portion is set so that the brightness changes between the brightness of the display light projected on the first part and the brightness of the display light projected on the second part. The vehicular display device according to any one of claims 1 to 4.

Images