JP2006290102A - Projecting indication device and method for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projecting indication device and method for a vehicle capable of suppressing deterioration of the visibility owing to external light and degradation of the appearance. <P>SOLUTION: The projecting indication device 1 for vehicle is to reflect the cast beams of light and lead to the eye point 100 of the driver/passenger of the vehicle. In this indication device 1, the cast beams are put incident to a penetration type screen 30 at an angle outside the specific range and penetrate the screen, and part of the beams are reflected by a plurality of reflecting boards 40, and the reflected beams are put incident to the screen 30 at an angle outside the specific range, are diffused, and finally attain the eye point 100 of the driver etc. of the vehicle. The external light fed into the vehicle through a windshield 130 is put incident to the screen 30 at an angle outside the specific range and makes penetration, part of which is reflected by the reflecting boards 40, and the reflected light is put incident to the screen 30 at an angle outside the specific range are makes penetration. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle projection display apparatus and method.

2. Description of the Related Art Conventionally, a vehicle projection display device such as a head-up display that reflects projected light on a windshield and visually recognizes the driver is known. There is also known a vehicle projection display device in which a hologram optical element is provided on a transparent screen, and light projected onto the screen is diffracted and diffused by the hologram optical element so that the driver can visually recognize optical information (for example, Patent Document 1). reference). Further, a NEXY screen is known that prevents the visibility of information to be displayed from being deteriorated due to the incidence of external light. This NEXY screen has a saw-toothed surface, and extraneous light is blocked and absorbed by the black paint surface (see, for example, Patent Document 2).
JP-A-9-33856 JP 2002-234360 A

  However, in the display device described in Patent Literature 1, not only the projection light but also the extraneous light is diffracted and diffused and led to the driver's eye point, so the visibility deteriorates. Further, in the display device described in Patent Document 2, although the visibility is prevented from being deteriorated, saw-shaped irregularities must be formed on the screen surface, and the appearance is deteriorated due to the influence of dirt and the like. Sometimes. In particular, when the screen is provided in the vicinity of the instrument panel, it is difficult for the driver to visually recognize the design of the instrument panel, resulting in a poor appearance.

  The vehicle projection display apparatus of the present invention guides the projected light to the eyepoint of the vehicle occupant. The vehicle projection display device includes a projection unit, a transmission unit, and a plurality of reflection units. The projecting means projects optical information to be presented to the vehicle occupant. The transmission means has a function of transmitting light incident from an angle outside the specific range and diffusing and transmitting light incident from an angle within the specific range, and is fixedly provided on the instrument panel. . The plurality of reflecting means are provided on the opposite side of the projecting means with the transmitting means interposed therebetween, and the total surface area is made smaller than the surface area of the transmitting means, and is provided between the transmitting means and the instrument panel. . Here, the transmission means is arranged so that the projection light from the projection means and the extraneous light entering the vehicle through the windshield are incident from an angle outside a specific range. Further, the plurality of reflecting means reflect a part of the projection light transmitted by the transmitting means and guides the reflected light to be incident on the transmitting means from an angle within a specific range, and the external light transmitted by the transmitting means. The reflected light is guided so as to enter the transmitting means from an angle outside a specific range.

  According to the present invention, the transmission means is arranged so that the projection light from the projection means and the extraneous light entering the vehicle through the windshield are incident from an angle outside the specific range. For this reason, the projection light and the extraneous light are transmitted through the transmission means without being diffused. Further, the plurality of reflection means reflect the projection light transmitted by the transmission means and guides a part of the reflected light to enter the transmission means from an angle within a specific range, and the external light transmitted by the transmission means. The reflected light is guided so as to be incident on the transmission means from an angle outside a specific range. Therefore, the projection light is diffused by the transmission means after being reflected by the plurality of reflection means, and is guided to the driver's eye point. On the other hand, the extraneous light is transmitted without being diffused by the transmitting means after being reflected by the plurality of reflecting means, so that it is not guided to the driver's eye point.

  The plurality of reflecting means are provided between the transmitting means and the instrument panel, and the total surface area is smaller than the surface area of the transmitting means. For this reason, a driver | operator can visually recognize an instrument panel from the clearance gap between each reflection means, and the fall of appearance is suppressed.

  Accordingly, it is possible to suppress deterioration in visibility and appearance due to external light.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  FIG. 1 is a configuration diagram of a vehicle projection display device according to a first embodiment of the present invention, and FIG. 2 is a perspective view of the vehicle projection display device according to the first embodiment. As shown in the figure, the vehicle projection display device 1 guides the projected light to an eye point 100 of a vehicle occupant, and includes a control device 10, a projector (projection means) 20, a transmission screen (transmission means). 30 and a plurality of reflecting plates (a plurality of reflecting means) 40.

  The control device 10 is connected to, for example, navigation, and acquires information on the position of the vehicle and the route along which the vehicle should travel from the navigation. The control device 10 is connected to a sensor that measures vehicle information such as a vehicle speed, an engine speed, and a remaining amount of fuel, and acquires vehicle information. Moreover, the control apparatus 10 is comprised so that not only these information but VICS information etc. may be acquired.

  The projector 20 projects the optical information to be presented to the vehicle occupant among the information acquired by the control device 10 in a predetermined direction. Specifically, the projector 20 is attached to or near the roof 110 of the vehicle, and projects information to be presented toward the vicinity of the center of the instrument panel 120. The projector 20 includes a display device unit (not shown) and a lens unit (not shown). The display device unit converts information such as a vehicle speed into optical information and emits light including this optical information. The lens unit transmits light from the display device unit and guides light in a predetermined direction. Note that the display device unit may receive light including optical information and transmit or reflect the incident light.

  The transmissive screen 30 transmits light incident from an angle outside a specific range (for example, a range near 35 °) and diffuses and transmits light incident from an angle within the specific range. The transmissive screen 30 is fixed to the center surface of the instrument panel 120 and has a curved shape along the curved surface of the instrument panel 120. The transmission screen 30 is not limited to the configuration fixed to the center surface of the instrument panel 120, and may be fixedly provided on the instrument panel 120 away from the surface.

  The plurality of reflecting plates 40 are mirrors that are fixed to the surface of the instrument panel 120 on the opposite side of the projector 20 with the transmissive screen 30 interposed therebetween. The total surface area of the plurality of reflectors 40 is smaller than the surface area of the transmissive screen 30.

FIG. 3 is a block diagram showing details of the plurality of reflectors 40 shown in FIG. In FIG. 3, for the sake of convenience of explanation, eight reflecting plates 40 ₁ to 40 ₈ will be described as an example of the plurality of reflecting plates 40. Specifically, as shown in FIG. 2, the _eight reflectors 40 ₁ to 40 ₈ have a total surface area of 45% or more and less than 100% of the surface area of the transmissive screen 30, and the eight reflectors 40 ₁ to 40 8. each 40 _8, surface area at 0.2 square millimeters distance to other reflector 40 adjacent is 0.2 millimeters or less. Further, the eight reflecting plates 40 ₁ to 40 ₈ are regularly arranged in an array. The eight reflectors 40 ₁ to 40 ₈ may not be arrayed but may be arranged irregularly.

4 is a cross-sectional view taken along line AA of the plurality of reflectors 40 shown in FIG. In FIG. 4, for the sake of convenience of explanation, four reflecting plates 40 ₁ to 40 ₄ will be described as an example of the plurality of reflecting plates 40. As shown in the figure, each of the four reflectors 40 ₁ to 40 ₄ reflects the projection light from the projector 20 so as to enter the transmissive screen 30 from an angle within a specific range (see θ in the figure). Further, the angle is adjusted according to the surface shape of the instrument panel 120. That is, four reflecting plate 40 _{1-40 4,} each installation angle is slightly different, for example, a second like reflector 40 _2, transmission at a specific angle θ reflects the projection light from the projector 20 It is appropriately arranged so as to enter the mold screen 30. Further, each of the _four reflecting plates 40 ₁ to 40 ₄ has a vertical direction of the reflecting surface thereof directed downward from a direction connecting the reflecting plate 40 and the eye point 100 of the vehicle occupant.

  Next, the vehicle projection display method according to the present embodiment will be described with reference to FIG. First, the control device 10 reads information to be presented to the vehicle occupant and transmits the contents of the information to be presented to the projector 20. The projector 20 converts information such as the vehicle speed and the engine speed into optical information, and projects the optical information through the lens unit.

  Then, the projection light projected from the projector 20 reaches the transmission screen 30. At this time, since the projection light is incident on the transmission screen 30 from an angle outside the specific range, it is transmitted without being diffused. Next, part of the projection light transmitted through the transmissive screen 30 reaches the plurality of reflection plates 40. The light reaching the plurality of reflection plates 40 is reflected, and the reflected light enters the transmission screen 30 from an angle θ within a specific range. Thereby, the light reflected by the plurality of reflecting plates 40 is diffused and finally reaches the eye point 100 of the vehicle occupant.

  Further, the light incident on the transmission screen 30 is not limited to projection light, but also includes extraneous light that enters the vehicle through the windshield 130. Extraneous light enters the transmission screen 30 from an angle outside a specific range. For this reason, the extraneous light passes through the transmission screen 30 without being diffused. A part of the extraneous light transmitted through the transmission screen 30 reaches the plurality of reflection plates 40. Then, the light that reaches the plurality of reflection plates 40 is reflected, and the reflected light enters the transmissive screen 30 from an angle outside the specific range. Thereby, the extraneous light reflected by the plurality of reflecting plates 40 does not finally reach the eye point 100 of the vehicle occupant. In particular, in each of the plurality of reflecting plates 40, the vertical direction of the reflecting surface is directed downward from the direction connecting the reflecting plate 40 and the eye point 100 of the vehicle occupant. Here, the extraneous light enters the instrument panel 120 through the windshield 130 from above. For this reason, even if the extraneous light is reflected by the reflecting plate 40, the reflecting surface is directed downward, so that it is guided to the knee of the vehicle occupant and not to the eye point 100 of the vehicle occupant.

  FIG. 5 is a graph showing the optical information and the brightness of the extraneous light in this embodiment, and the contrast ratio between this embodiment and the prior art. In the figure, the horizontal axis indicates the ratio of the total surface area of the plurality of reflectors 40 to the surface area of the transmissive screen 30, the left vertical axis indicates luminance, and the right vertical axis indicates the contrast ratio.

  First, as shown in FIG. 5, the brightness of the optical information increases as the ratio of the total surface area of the plurality of reflectors 40 increases. On the other hand, the luminance of the extraneous light decreases as the ratio of the total surface area of the plurality of reflectors 40 increases. Here, in order for the extraneous light to reach the eye point 100 of the vehicle occupant, it is necessary to diffusely reflect the instrument panel 120. Therefore, when the ratio of the total surface area of the plurality of reflectors 40 increases, the ratio of the extraneous light incident on the instrument panel 120 decreases, and the luminance of the extraneous light decreases.

  As described above, as the ratio of the total surface area of the plurality of reflectors 40 increases, the brightness of the optical information increases and the brightness of the external light decreases, so the contrast ratio is equal to the total surface area of the plurality of reflectors 40. It can be said that the ratio increases as the ratio increases. Here, the contrast ratio can be obtained by a relational expression: contrast ratio = (luminance of optical information−background luminance) / (luminance of optical information + background luminance). The background luminance in the above formula is the luminance of light that is guided to the eye point 100 of the vehicle occupant when the external light is diffusely reflected by the instrument panel 120.

  As shown in FIG. 5, the contrast ratio of the conventional hologram optical element was about 0.53. According to the configuration of the present embodiment, the total surface area of the plurality of reflectors 40 is 45% or more and less than 100% of the surface area of the transmissive screen 30, thereby exceeding the conventional contrast ratio and improving visibility. Will be.

  As described above, according to the vehicle projection display apparatus and method according to the present embodiment, the transmission screen 30 detects the projection light from the projector 20 and the extraneous light entering the vehicle through the windshield 130 outside the specific range. It arrange | positions so that it may inject from the angle of. For this reason, the projection light and the extraneous light are transmitted through the transmissive screen 30 without being diffused. The plurality of reflectors 40 reflect the projection light transmitted by the transmissive screen 30 and guide a part of the reflected light to enter the transmissive screen 30 from an angle within a specific range. A part of the extraneous light transmitted by 30 is reflected, and this reflected light is guided to enter the transmissive screen 30 from an angle outside a specific range. For this reason, the projection light is diffused by the transmissive screen 30 after being reflected by the plurality of reflecting plates 40, and is guided to the driver's eye point 100. On the other hand, the extraneous light is transmitted without being diffused by the transmissive screen 30 after being reflected by the plurality of reflecting plates 40, so that it is not guided to the driver's eye point 100.

  The plurality of reflection plates 40 are provided between the transmission screen 30 and the instrument panel 120, and the total surface area is smaller than the surface area of the transmission screen 30. For this reason, the driver | operator can visually recognize the instrument panel 120 from the clearance gap between each reflecting plate 40, and the fall of appearance is suppressed.

  Accordingly, it is possible to suppress deterioration in visibility and appearance due to external light.

  Moreover, the vertical direction of the reflective surface of the plurality of reflecting plates 40 is directed downward from the direction connecting the reflecting plate 40 and the eye point 100 of the vehicle occupant. Here, the instrument panel 120 is provided on the lower side of the windshield 130, and extraneous light enters the instrument panel 120 from above through the windshield 130. For this reason, even if the extraneous light is reflected by the reflecting plate 40, the reflecting surface is directed downward, so that it is not guided to the eye point 100 of the vehicle occupant. Therefore, it is possible to reliably suppress deterioration in visibility due to external light.

  The transmission screen 30 is fixed to the surface of the instrument panel 120. Here, since the instrument panel 120 has a curved surface, the incident angle of the projection light to the transmission screen 30 varies depending on the curved surface. Therefore, in order to transmit and diffuse light, a specific range for diffusing and transmitting light must be appropriately adjusted according to the curved surface, and the creation of the transmissive screen 30 becomes complicated. However, the plurality of reflecting plates 40 are fixed to the surface of the instrument panel 120, and each of the plurality of reflecting plates 40 reflects the projection light from the projector 20 so as to enter the transmissive screen 30 from an angle within a specific range. Further, the angle is adjusted according to the surface shape of the instrument panel 120. For this reason, even if the angle having the diffusive transmission characteristic is uniform for the transmissive screen 30, light can be incident at an angle within a specific range by the plurality of reflectors 40, so that the transmissive screen 30 can be easily created. can do.

  The plurality of reflectors 40 have a total surface area of 45% or more and less than 100% of the surface area of the transmissive screen 30. For this reason, the contrast ratio is higher than that of a display device using a conventional hologram optical element, and visibility can be improved.

  Each of the plurality of reflecting plates 40 has a surface area of 0.2 mm 2 or less, and a distance to another adjacent reflecting plate 40 is 0.2 mm or less. Here, when the viewer has a surface area of 0.2 square millimeters or less and a distance to another adjacent reflector 40 is 0.2 millimeters or less, the viewer can visually recognize as continuous information with little discomfort. And the rear instrument panel 120 tends to be visible without a sense of incongruity. Therefore, the appearance can be further improved.

  Next, a second embodiment of the present invention will be described. The vehicular projection display apparatus 1 according to the second embodiment is the same as that of the first embodiment, but differs from that of the first embodiment in that a light shielding filter 50 is provided.

FIG. 6 is a configuration diagram of the transmission screen 30 and its vicinity of the vehicle projection display apparatus 1 according to the second embodiment. In FIG. 6, for the sake of convenience of explanation, eight reflecting plates 40 ₁ to 40 ₈ will be described as an example of the plurality of reflecting plates 40.

As shown in FIG. 6, in the second embodiment, the vehicle projection display device 1 includes a light shielding filter 50. The light shielding filter 50 reduces the proportion of extraneous light that reaches the transmissive screen 30. Further, the light shielding filter 50 is provided on the surface of the transmissive screen 30 except on the optical path of the light incident on the _eight reflecting plates 40 ₁ to 408 of the projection light from the projector 20.

  FIG. 7 is a graph showing the luminance and contrast ratio when a light shielding filter is used in a conventional hologram optical element. In the figure, the horizontal axis represents the light shielding rate of the light shielding filter, the left vertical axis represents the luminance, and the right vertical axis represents the contrast ratio. Conventionally, the use of a light-shielding filter can reduce the brightness of extraneous light, but the brightness of optical information also decreases accordingly, so the contrast ratio is almost constant and the effect of improving visibility is high. I could not say it.

  FIG. 8 is a graph showing the contrast ratio when the light shielding filter 50 according to the present embodiment is used. In the figure, the horizontal axis indicates the ratio of the total surface area of the plurality of reflectors 40 to the surface area of the transmissive screen 30, and the left vertical axis indicates the contrast ratio. FIG. 8 shows three examples in which the light shielding filter 50 is not provided, the 30% light shielding filter 50 is provided, and the 50% light shielding filter 50 is provided.

  As shown in FIG. 8, it can be seen that when the light shielding filter 50 is provided, the contrast ratio is improved as compared with the case where the light shielding filter 50 is not provided. Thereby, without changing the ratio of the total surface area of the reflecting plate 40, contrast ratio can be improved and visibility can be improved. This is particularly effective when the reflectance of the instrument panel 120 is high.

  Conversely, while maintaining the contrast ratio, the total surface area of the reflector 40 can be reduced, making the reflector 40 less noticeable. As a result, the instrument panel 120 can be easily seen from the vehicle occupant, and the appearance when the optical information is not displayed can be improved. For example, when the ratio of the total surface area of the reflecting plate 40 is 45% and a contrast ratio similar to that without a filter is realized, a shading filter 50 having a shading rate of 30% is provided, and the total surface area of the reflecting plate 40 is If the ratio is about 33%, the appearance can be improved while maintaining the contrast ratio.

  In FIG. 8, two examples of the light shielding rate of 30% and 50% have been described. However, the light shielding rate is not limited to these, and the assumed extraneous light with respect to the luminance of the optical information. It is better to determine from the strength of the image and the target contrast ratio.

  In this manner, according to the vehicle projection display device 1 according to the second embodiment, it is possible to suppress deterioration in visibility and appearance due to external light, as in the first embodiment. In addition, it is possible to reliably suppress deterioration in visibility due to extraneous light, and to facilitate the creation of the transmissive screen 30. Furthermore, visibility can be improved and the appearance can be further improved.

  Further, according to the second embodiment, the light shielding filter 50 is provided on the surface of the transmission screen 30. For this reason, the extraneous light which injects into the transmission type screen 30 is shielded, and the deterioration of the visibility by extraneous light is further suppressed. Further, the light shielding filter 50 is provided except on the optical path of the light incident on the plurality of reflection plates 40 out of the projection light from the projector 20. For this reason, the light reflected by the reflecting plate 40 and guided to the eye point 100 of the vehicle occupant is not shielded so much. Therefore, the contrast ratio can be improved.

  Next, a third embodiment of the present invention will be described. The vehicular projection display apparatus 1 according to the third embodiment is the same as that of the first embodiment, but the configuration of the plurality of reflectors 40 is different from that of the first embodiment.

  FIG. 9 is a configuration diagram of a plurality of reflectors 40 according to the third embodiment. First, the projector 20 projects image information composed of a plurality of dots as optical information. In the third embodiment, as shown in FIG. 9, two or more reflecting plates 40 are provided corresponding to each dot constituting the image information (four in the example shown in FIG. 9).

These four reflecting plates 40 ₁ to 40 ₄ are arranged so that the reflected light is diffused and transmitted by the transmissive screen 30 and reaches the driver and the passenger in the passenger seat with a predetermined intensity or more. Specifically, the first and second reflectors 40 ₁ and 40 ₂ are provided so that the reflected light reaches the passenger in the passenger seat with a predetermined intensity or more, and the third and fourth reflectors 40. ₃ and 40 ₄ are provided so that the reflected light reaches the driver with a predetermined intensity or more.

  FIG. 10 is a graph showing the intensity of light reflected by the plurality of reflecting plates 40 according to the third embodiment. In FIG. 10, the vertical axis indicates the relative intensity, and the horizontal axis indicates the visual recognition position. FIG. 10 shows a comparison between the screen having a high diffusivity and the third embodiment.

  First, in the case of a screen with a high degree of diffusion, the intensity of optical information tends to be highest between the driver's seat and the passenger seat. Therefore, it cannot be said that the optical information is visually recognized in the optimum environment from the viewpoint of the driver and passengers in the passenger seat. On the other hand, in the third embodiment, a plurality of reflecting plates 40 are arranged corresponding to each dot, and the plurality of reflecting plates 40 are operated at a predetermined intensity or more when the reflected light is diffused and transmitted by the transmissive screen 30. And passengers in the front passenger seat. For this reason, as shown in FIG. 10, high-intensity light reaches the driver and the passenger in the passenger seat, and the driver and passenger in the passenger seat can visually recognize the optical information in the optimum environment. Become.

  In order to make the vehicle occupant visually recognize the optical information with a predetermined intensity or more, the degree of diffusion by the screen may be reduced. In this case, the visible area tends to be narrowed. Therefore, it is difficult to make the optical information suitably visible for both the driver and the passenger in the passenger seat. However, in the third embodiment, the visibility of both the driver and the passenger in the passenger seat can be improved. In the third embodiment, the optical information is preferably visually recognized for the driver and the passenger in the passenger seat. However, the present invention is not limited to this, and the optical information is suitably viewed for the vehicle occupant in the center rear seat. You may do it.

  In addition, the reflector 40 shown in FIG. 9 is applied so that the driver can visually recognize a part of the projection light, and the other is directed to the reflection member provided on the windshield 130 or the instrument panel 120. And can be used as a so-called HUD.

  Thus, according to the projection display apparatus 1 for vehicles which concerns on 3rd Embodiment, similarly to 1st Embodiment, the deterioration of the visibility by external light and the deterioration of appearance are the same as 1st Embodiment. Can be suppressed. In addition, it is possible to reliably suppress deterioration in visibility due to extraneous light, and to facilitate the creation of the transmissive screen 30. Furthermore, visibility can be improved and the appearance can be further improved.

  Furthermore, according to the third embodiment, two or more reflecting plates 40 are provided corresponding to each dot constituting the image information, and the reflected light is diffused and transmitted by the transmissive screen 30 in the two or more reflecting plates 40. It is arranged to reach different vehicle occupants with a predetermined strength or higher. For this reason, the light which comprises each dot reaches | attains each vehicle occupant with a predetermined intensity or more, and it can aim at the improvement of visibility about each of these vehicle occupants. In particular, since the reflecting plate 40 is provided corresponding to each dot, optical information can be visually recognized without causing missing dots when the vehicle occupant visually recognizes the dot.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and may be modified without departing from the gist of the present invention. For example, in the present embodiment, a mirror is used as the plurality of reflectors 40. However, the present invention is not limited thereto, and a convex lens having a high reflectance prism lens or a transparent plastic member provided with irregularities similar to the mirror arrangement is provided. A mirror-coated one can also be used.

1 is a configuration diagram of a vehicle projection display device according to a first embodiment of the present invention. It is a perspective view of the projection display apparatus for vehicles concerning a 1st embodiment. It is a block diagram which shows the detail of the some reflecting plate shown in FIG. It is AA sectional drawing of the some reflecting plate shown in FIG. It is a graph which shows the brightness | luminance of the optical information and external light in this embodiment, and the contrast ratio of this embodiment and a prior art. It is a block diagram of the transmission type screen of the projection display apparatus for vehicles which concerns on 2nd Embodiment, and its vicinity. It is a graph which shows a brightness | luminance and contrast ratio when a light-shielding filter is used for the conventional hologram optical element. It is a graph which shows contrast ratio when the light shielding filter which concerns on this embodiment is used. It is a block diagram of the some reflecting plate which concerns on 3rd Embodiment. It is a graph which shows the intensity | strength of the light reflected by the some reflecting plate which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Projection display apparatus 10 for vehicles ... Control apparatus 20 ... Projector (projection means)
30 ... Transmission type screen (transmission means)
40. Plural reflecting plates (plural reflecting means)
50 ... Shading filter 100 ... Eye point 110 ... Roof 120 ... Instrument panel 130 ... Wind shield

Claims (10)

In the vehicle projection display device that guides the projected light to the eyepoint of the vehicle occupant,
Projecting means for projecting optical information to be presented to the vehicle occupant;
Transmitting light incident from an angle outside the specific range and having a function of diffusing and transmitting light incident from the angle within the specific range, and a transmission means fixedly provided on the instrument panel;
A plurality of reflection means provided on the opposite side of the projection means across the transmission means, the total surface area of which is smaller than the surface area of the transmission means, and provided between the transmission means and the instrument panel; Prepared,
The transmission means is arranged so that the projection light from the projection means and the extraneous light entering the vehicle through the windshield are incident from an angle outside the specific range,
The plurality of reflecting means reflects a part of the projection light transmitted by the transmitting means, guides the reflected light to enter the transmitting means from an angle within the specific range, and is transmitted by the transmitting means. A projection display apparatus for a vehicle, wherein a part of the extraneous light is reflected and the reflected light is guided to the transmitting means so as to be incident from an angle outside the specific range.   The projection unit includes a display device unit that emits light including optical information, or transmits or reflects light including the emitted optical information, and a lens unit that transmits light from the display device unit. The vehicular projection display apparatus according to claim 1, wherein the vehicular projection display apparatus is configured.   The vertical direction of the reflecting surface of the plurality of reflecting means is directed downward from a direction connecting the reflecting means and the eye point of the vehicle occupant. The vehicle projection display device described in 1. The transmitting means and the plurality of reflecting means are fixed to an instrument panel surface,
Each of the plurality of reflection means is angle-adjusted according to the surface shape of the instrument panel so that the projection light from the projection means is reflected and incident on the transmission means from an angle within the specific range. The vehicular projection display apparatus according to any one of claims 1 to 3.   5. The vehicle projection display according to claim 1, wherein the plurality of reflecting means has a total surface area of 45% or more and less than 100% of a surface area of the transmitting means. apparatus.   Each of the plurality of reflecting means has a surface area of 0.2 mm 2 or less, and a distance to another adjacent reflecting means is 0.2 mm or less. The projection display apparatus for vehicles of any one of Claim 5. Further comprising a light shielding filter that reduces the proportion of extraneous light reaching the transmission means;
The said light shielding filter is provided in the surface of the said permeation | transmission means except on the optical path of the light which injects into the said several reflection means among the projection lights from the said projection means. The vehicle projection display device according to claim 1. The projection means projects image information composed of a plurality of dots as projection light,
The plurality of reflecting means are provided in two or more corresponding to each dot constituting the image information,
The two or more reflecting means arranged corresponding to the dots are arranged so that the reflected light is diffused and transmitted by the transmitting means and reaches different vehicle occupants with a predetermined intensity or more. The vehicle projection display device according to any one of claims 1 to 7. In the vehicle projection display device that guides the projected light to the eyepoint of the vehicle occupant,
Projecting means for projecting optical information to be presented to the vehicle occupant;
Transmitting light incident from an angle outside the specific range and having a function of diffusing and transmitting light incident from the angle within the specific range, and a transmission means fixedly provided on the instrument panel;
A plurality of reflection means provided on the opposite side of the projection means across the transmission means, the total surface area of which is smaller than the surface area of the transmission means, and provided between the transmission means and the instrument panel; Prepared,
The projection light from the projection means is incident on the transmission means from an angle outside the specific range and is transmitted, part of the light is reflected by the plurality of reflection means, and the reflected light is reflected by the transmission means at an angle within the specific range. And then diffused, finally reaching the eyepoint of the vehicle occupant,
The extraneous light entering the vehicle through the windshield is incident on the transmission means from an angle outside the specific range and transmitted, a part of the light is reflected by the plurality of reflection means, and the reflected light is specified by the transmission means. A projection display device for a vehicle, which is incident and transmitted from an angle outside the range. In the vehicle projection display method for projecting optical information to be presented to the vehicle occupant and guiding the projection light to the eye point of the vehicle occupant,
The projection light is transmitted through the transmission means fixedly provided on the instrument panel from an angle outside a specific range, and a part of the transmitted light has a total surface area smaller than the surface area of the transmission means. Reflected by a plurality of reflecting means provided between the transmitting means and the instrument panel, the reflected light is incident on the transmitting means from an angle within a specific range, diffused and transmitted, and finally the vehicle occupant Reach the eye point,
Extraneous light entering the vehicle through the windshield is incident on the transmission means from an angle outside a specific range and transmitted, and a part of the transmitted light is reflected by the plurality of reflection means, and the reflected light is reflected. A projection display method for a vehicle, wherein the light is incident on and transmitted through the transmission means from an angle outside a specific range.

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