JP2018177205A - Sunshade apparatus for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent generation of dead angle due to use of a sunshade apparatus.SOLUTION: It comprises a dimming glass plate 2 which is arranged as a part of a vehicular window glass so as to separate inner section of a vehicular room from outer section of the vehicular room or arranged as a part of a surface directed to inside of the vehicular room on the vehicular window glass and whose penetrability of light may be changed; a display apparatus 3 which is formed with translucent material and whose display part 3a is arranged on a surface of the dimming glass plate 2, which is directed to inside of the vehicular room, so that it is directed to inside of the vehicular room; an imaging apparatus 4 photographing an outside region at the opposite surface to the surface where the display apparatus 3 on the dimming glass plate 2 is arranged so as to generate image data; a data processing circuit generating display image data to be displayed on the display part 3a based on the image data generated by the imaging apparatus 4; and a switch 6 switching penetrability of the light of the dimming glass plate 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shading device for a vehicle.

  In a vehicle such as a car, when sunlight directly enters the field of vision of the driver etc., it becomes difficult to look out of the window due to its glare, and it is difficult to secure a normal field of view due to the occurrence of glare and the like May become In such a case, the driver places a sunshade member provided in the cabin near the window in order to shield the sun. Further, Patent Document 1 has a liquid crystal display, and changes the contrast of the liquid crystal display when it is used as a sunshade device according to the amount of external light, and when it is not used as a sunshade device A sunshade device is disclosed which can be displayed on

Unexamined-Japanese-Patent No. 5-59875 gazette

  By using a sunshade device, glare due to sunlight is reduced. However, on the other hand, since a part of the window is covered by using the shading device, a blind spot may occur in the view of the driver or the like. In particular, in the driver's seat of a car, traffic lights and road signs arranged above the position of the driver's eyes may be overlooked without being caught by the driver's view. Also, the shade device is positioned such that no such blind spots occur when not in use, and is positioned to cover a portion of the window only when needed. The driver of the vehicle needs to move the awning device every time the awning device is used. Furthermore, depending on the sun's angle and the driver's attitude, the sunshade may be positioned relatively close to the driver. In that case, even if the sunshade device includes a liquid crystal display as disclosed in Patent Document 1, the driver may find it difficult to see the display image of the liquid crystal display.

  Therefore, the present invention is a shading device for a vehicle that can block sunlight only when it is needed without moving, and can display an image of a scene that is hidden by the shading device when the sunlight is blocked. Intended to be provided.

  The awning device of a vehicle according to an embodiment of the present invention is provided on a part of the window glass of the vehicle so as to separate the inside of the vehicle compartment from the outside of the vehicle compartment, or And a light control glass plate which is provided on a part of the surface facing the light, and which is capable of changing the light transmittance, and is formed using a translucent material, on the surface of the light control glass plate facing the inside of the casing And a display device disposed with the display unit facing the inside of the vehicle compartment, and an imaging device for imaging an area outside the vehicle opposite to the surface of the light control glass plate on which the display device is provided to generate imaging data And a data processing circuit that generates display image data to be displayed on the display unit based on imaging data generated by the imaging device, and a switch that switches the light transmittance of the light control glass plate. Characterized by To.

  According to the present invention, the sun can be blocked only when it is needed without moving the sun protection device, and furthermore, it is possible to display an image of a scene hidden on the sun protection device when the sun is blocked.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the shading device of the vehicle of Embodiment 1 of this invention. It is sectional drawing in the II-II line of FIG. It is a figure which shows typically an example of the area | region imaged with the imaging device of the shading device of the vehicle of Embodiment 1 with a dead angle part. It is a figure which shows typically the other example of the area | region imaged with the imaging device of the shading device of the vehicle of Embodiment 1 with a dead angle part. It is a figure explaining operation | movement of the light control glass plate of the shading device of the vehicle of Embodiment 1. FIG. It is a figure explaining operation | movement of the light control glass plate of the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows partially an example of the electrically conductive film of the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows the arrangement position of the light control glass plate of the shading device of the vehicle of Embodiment 1. FIG. 1 is a cross-sectional view showing an example of a display device in a shading device of a vehicle of Embodiment 1. FIG. It is a figure which illustrates arrangement | positioning of the driver of the display apparatus in the shading device of the vehicle of Embodiment 1. FIG. It is a figure which illustrates arrangement | positioning of the wiring between the display apparatus in a shading device of the vehicle of Embodiment 1, and a driver. FIG. 2 is a view showing an example of a first detector of the shading device of the vehicle of Embodiment 1; FIG. 1 is a block diagram showing main components of a shading device of a vehicle of Embodiment 1. It is a figure which shows the state which the driver is looking out of a vehicle through the shading device of the vehicle of Embodiment 1. FIG. FIG. 2 is a view showing a driver's gaze on the shading device of the vehicle of the first embodiment. It is a figure which shows the display image processed by the data processing circuit of the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows the display image of FIG. 11A in the shape reflected to a driver | operator's eyes. It is a figure which illustrates a driver | operator's gaze with respect to the display apparatus of the part near the front passenger seat in the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows the example of a blind spot part when the shading device of the vehicle of Embodiment 1 is blocking the sun. It is a figure which shows an example of the display image corresponding to the blind spot part when the shading device of the vehicle of Embodiment 1 is blocking the sun. It is a figure which shows notionally an example of the data memorize | stored in the memory circuit of the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows an example of the image currently emphasized and displayed by the shading device of the vehicle of Embodiment 1. FIG. It is a figure which shows the other example of the image currently emphasized and displayed by the shading device of the vehicle of Embodiment 1. FIG. It is sectional drawing which shows an example of the shading device of the vehicle of Embodiment 2 of this invention.

  Hereinafter, with reference to the drawings, an embodiment of a vehicle sunshade device (hereinafter, "vehicle sunshade device" is also simply referred to as "sunshade device") of the present invention will be described. In addition, the material of each component in the embodiment described below, a shape, their relative positional relationship, etc. are only an illustration to the last. The sun shade device of the present invention is not to be interpreted in a limited manner by these. In addition, hereinafter, the sunshade device of the first embodiment will be described with reference to the drawings showing a general passenger car, taking an automobile sunshade device provided on a part of a windshield as an example. However, the sunshade device of the present invention may be used in various vehicles such as buses, trucks, and trains as well as vehicles of the type illustrated.

First Embodiment
FIG. 1 illustrates the windshield CG and the periphery thereof from the inside of the cabin of the automobile C, and illustrates the sunshade device 1 of the first embodiment provided on a part of the windshield CG. FIG. 2 is an enlarged cross-sectional view taken along line II-II of FIG. Moreover, the imaging area | region 41 image | photographed by the imaging device 4 of the shading device 1 is typically shown by FIG. 3A and 3B.

  As shown in FIGS. 1 to 3B, the shading device 1 for a vehicle according to the present embodiment is a glass plate capable of changing the light transmittance, and a light control glass plate 2 provided on a part of the window glass of the vehicle And a display device 3 disposed on a surface 2 a of the light control glass plate 2 facing the inside of the vehicle compartment. The light control glass plate 2 is provided on a part of the windshield CG of the car C in the example of FIGS. 1 to 3B. The display device 3 is formed using a translucent material. The display device 3 is disposed on the surface 2 a of the light control glass plate 2 with the display unit 3 a facing the inside of the passenger compartment. The sunshade device 1 further includes an imaging device 4 that images a region outside the vehicle on the surface 2a and the opposite surface 2b on the light control glass plate 2 on which the display device 3 is provided, and generates imaging data. In the following description, the “surface 2 a” of the light control glass plate 2 is also referred to as the “first surface 2 a” of the light control glass plate 2. Further, the opposite surface 2 b of the surface 2 a is also referred to as the “second surface 2 b” of the light control glass plate 2. Furthermore, the sunshade device 1 further includes a data processing circuit 5 (see FIG. 9) that generates display image data to be displayed on the display unit 3a of the display device 3 based on the imaging data generated by the imaging device 4; And a switch 6 for switching the light transmittance of the glass plate 2. Although not shown, the imaging device 4 and the data processing circuit 5 are connected so as to be able to transmit and receive data in a wired or wireless manner. The switches 6 are conceptually illustrated as rectangles as functional blocks in FIG.

  In the present embodiment, the light control glass plate 2 is provided to separate the inside of the cabin from the outside of the cabin, and constitutes a part of the windshield CG of the automobile C. The light control glass plate 2 may be provided on a part of the surface of the window glass of the vehicle facing the inside of the compartment. Such an aspect is described later as Embodiment 2. The light control glass plate 2 can transmit light or block light according to a change in light transmittance. The light control glass plate 2 is provided at the upper edge of the windshield CG. In the example of FIG. 1, the light control glass plate 2 is provided over the entire vehicle width direction at the upper edge of the windshield CG.

  The light control glass plate 2 is provided up to the upper edge of the opening for the windshield CG in the front of the passenger compartment (this opening includes a glue portion for bonding the vehicle body and the windshield CG) Absent). However, as shown in FIG. 1, a gap may exist between the upper edge of the windshield CG and the light control glass plate 2. As shown in FIG. 2, the interior of the ceiling portion of the passenger compartment protrudes inward from the windshield CG near the upper edge of the windshield CG. A gap present in the vicinity of the upper edge of the windshield CG in which the sunlight to the driver and the passenger on the passenger seat is blocked by the overhanging portion of the interior is acceptable without any particular problem. In the example of FIG. 1, the imaging device 4 is disposed inside the cabin so that the lens 4 b is positioned between the upper edge of the windshield CG and the light control glass plate 2. Even when the light control glass plate 2 is in the light blocking state, a scene outside the vehicle can be photographed without any problem. In addition, the code | symbol RM has shown the resin molding in FIG.

  Unlike the example of FIG. 1, the light control glass plate 2 may be provided only in the front portion of the driver's seat which occupies approximately a half of the direction in which the driver's seat is provided in the vehicle width direction. In addition, a second light control glass plate is disposed at a front portion of a passenger seat that occupies approximately half of the passenger seat side apart from the light control glass plate (first light control glass plate) provided as such. May be provided. In the present embodiment, the light control glass plate 2 has a substantially rectangular shape as a whole (in FIG. 1, since the front glass CG is inclined, the left and right edges in FIG. 1 are parallel to each other). Not drawn). However, the light control glass plate 2 may be formed in any shape other than a rectangle, such as a trapezoidal shape or an oval shape. The position, size and shape of the light control glass plate 2 are not limited to the position, size and shape shown in FIG. 1 as long as the sun can be blocked when necessary.

  The light control glass plate 2 includes two glass plates 21a and 21b provided facing each other, and a liquid crystal sheet 22 disposed between the glass plates 21a and 21b. As described later, the light control glass plate 2 changes the light transmittance based on the magnitude of the voltage applied to the liquid crystal sheet 22. The voltage applied to the liquid crystal sheet 22 is switched by the switch 6.

  Switch 6 is connected between light control glass plate 2 and a power supply unit of a vehicle (not shown) (such as a battery, an alternator, or a voltage regulator that receives power such as a battery to generate a stabilized voltage), for example. Switch. In this case, the switch 6 switches between two states of application and non-application of a predetermined voltage to the light control glass plate 2. Further, the switch 6 may switch the voltage applied to the light control glass plate 2 connected to the output of the voltage regulator by changing a reference voltage which is a reference of the output voltage of the voltage regulator (not shown). For example, the switch 6 may be a variable resistor or the like connected between the power supply unit and the ground line and having an intermediate terminal connected to the reference voltage input terminal of the voltage regulator. In this case, the switch 6 can switch the light transmittance of the light control glass plate 2 stepwise or continuously. As the switch 6, any switching element capable of switching between application and non-application of voltage to the light control glass plate 2 or changing the magnitude of voltage applied to the light control glass plate 2 is used. The switch 6 may be operated by a hand such as the driver M of the automobile C, or may be operated by another component of the sunshade device 1 of the present embodiment as described later.

  The display device 3 is provided only in the front portion of the driver's seat in the vehicle width direction in the example of FIG. 1. However, similar to the light control glass plate 2 shown in FIG. 1, the display device 3 may be provided over substantially the entire vehicle width direction. Further, in addition to the display device 3 in front of the driver's seat, a second display device 3b may be provided separately from the display device 3 in the front portion of the passenger seat. When the display device 3 is provided substantially in the entire vehicle width direction, or when the second display device 3 b is provided in front of the front passenger seat, the front portion or the second display of the front passenger seat in the display device 3 The device 3 b may display an image based on a scene viewed from the driver M, or an image based on a scene viewed from a passenger sitting in the front passenger seat. The image displayed on the front portion of the front passenger seat or the second display device 3b in the display device 3 may be switched by the operation of switching means such as a changeover switch. May be switched based on the presence or absence of a person). For example, when the automobile C is equipped with a seat belt attachment detection device for the front passenger seat, the front portion of the front passenger seat in the display device 3 or the second display device 3b is displayed based on the detection result of this detection device. Images may be switched. For example, when the passenger seat belt is fastened, an image based on a view seen from the passenger of the front passenger seat may be displayed on the front portion of the front passenger seat on the display device 3 or the second display 3b. Good. When the view from the same passenger sitting in the front passenger seat is displayed as described above, the second imaging device for the front passenger seat and detection for detecting the position of the eye of the person sitting in the front passenger seat as described later A vessel may be provided.

  Further, when the display device 3 is provided substantially over the entire vehicle width direction, or when the second display device 3 b is provided in front of the front passenger seat, the display device 3 is located farther from the driver's seat The angle between the display surface of the third or second display device 3b and the line of sight of the driver M can be an acute angle. In order to maintain the visibility of the driver M even in such a situation, the imaging data may be processed as described later.

  As described above, the display device 3 is formed using a translucent material. Therefore, when the light control glass plate 2 is made to transmit light by the switch 6, even in the portion where the light control glass plate 2 is provided, for example, a person in the vehicle compartment such as the driver M displays The scene outside the vehicle can be seen through the device 3 and the light control glass plate 2.

  On the other hand, when sunlight enters the vehicle interior, the sunlight is blocked by lowering the light transmittance of the light control glass plate 2 using the switch 6. In addition, based on the imaging data generated by the imaging device 4, an image of a scene outside the vehicle to which the second surface 2 b of the light control glass plate 2 faces can be displayed on the display unit 3 a of the display device 3. The display unit 3 a of the display device 3 is a portion (display surface) on which an image is actually displayed. In the present embodiment, substantially the entire surface of the display device 3 facing the cabin is the display unit 3a. In FIGS. 1 and 2, for easy understanding, the display unit 3a is drawn by a two-dot chain line along a surface facing the peripheral edge or the compartment in the display device 3 (in the drawings other than FIGS. 1 and 2) The display unit 3a is omitted). In addition, the display device 3 may have a bezel portion at the peripheral portion.

  FIG. 1 shows a state in which an image is displayed on the display device 3. In the display device 3 shown in FIG. 1, a traffic light S1, and a control sign S2 indicating "progress from the designated direction", a main point An image of a guidance sign S3 indicating an indicator etc. and an auxiliary sign S4 indicating a regulation target time of the regulation sign S2 etc. is displayed. The traffic signal S1 and the regulation sign S2 displayed on the display device 3 in FIG. 1 are originally present at a position where the driver M should be in the view in the situation shown in FIG. However, if the light transmittance of the light control glass plate 2 is lowered to block sunlight, the area where the traffic light S1 and the like are present is hidden by the light control glass plate 2, and the traffic light S1 and the like are directly viewed by the driver M It will not be done. However, in the present embodiment, the display unit of the display device 3 in which a scene outside the vehicle is imaged by the imaging device 4 and a scene that should originally be seen in the area of the light control glass plate 2 is disposed toward the inside of the cabin. It is displayed as an image on 3a. According to the sunshade device 1 of the present embodiment, the driver M or the like can check without missing a road sign, a traffic light or the like even under backlight. In Japan, as road signs, there are provided the above-mentioned regulation signs and information signs, the present signs including the indication signs indicating specific permission or instruction, and the warning signs for warning, and the auxiliary signs. According to the sunshade device 1 of the present embodiment, a scene that can be hidden by the light control glass plate 2 whose light transmittance is lowered is displayed on the display device 3. For example, it is possible to clearly identify even signs written on guidance signs and auxiliary signs.

  As shown in FIGS. 3A and 3B, the imaging device 4 captures an imaging region 41 including a dead area B which is blocked by the light control glass plate 2 whose transmittance is lowered in the field of view of the driver M. To be placed in the car C. An area including the blind spot B is imaged by the imaging device 4 arranged in such a manner, and imaging data is generated. Display image data based on the imaging data is generated by the data processing circuit 5 (see FIG. 9) and sent to the display device 3. As a result, an image of a scene including an area that can be a blind spot B is displayed on the display device 3 (see FIG. 1) toward the driver M. The driver M can visually recognize the sight of the portion hidden by the light control glass plate 2 through the display device 3. Therefore, it is possible to reduce oversight of a traffic signal or a road sign by the driver M under a sunshine where a sun protection device is used. It is considered that the sunshade device 1 of the present embodiment can contribute to ensuring the safety of traffic.

  Further, in the present embodiment, the movement of the shading device is not required between when it is necessary to block the sun and when it is not necessary to block the sun. When it is necessary to block the sunlight, it is possible to block the sunlight or at least weaken the intensity only by lowering the light transmittance of the light control glass plate 2. In addition, when there is no need to block sunlight, the light transmittance of the light control glass plate 2 should be increased and the image display by the display device 3 should simply be stopped. Can be viewed from inside the cabin. The annoyance to the driver M or the like concerning the movement of the shading device when the incident condition of the sun changes with the change of the traveling direction of the vehicle is reduced.

  Furthermore, in the present embodiment, the light control glass plate 2 constitutes a part of the windshield CG, and the display device 3 is disposed on the surface of the part of the windshield CG facing the vehicle interior. Therefore, in the present embodiment, the image can be displayed at a stable position for a person in the vehicle compartment. Furthermore, when the driver M or the like who is looking at a front scene through the windshield CG shifts his line of sight to the display device 3, the change in the front-back direction is smaller than when changing the line of sight to the conventional awning device. You can easily focus the eyes quickly and easily. The moving distance of the line of sight is also considered to be short. Thus, the sunshade device 1 of the present embodiment can display the scene outside the vehicle at a position easy for the person such as the driver M to see.

  In the present embodiment, the imaging device 4 is formed separately from the display device 3. The imaging device 4 is preferably disposed inside the cabin, as shown in FIG. 3A or the like. However, in the case where the imaging device 4 has appropriate durability against wind and rain and stain resistance, the imaging device 4 may be disposed outside the vehicle. The imaging device 4 is preferably disposed at a position substantially in front of the driver M in the vehicle width direction, as shown in FIG. 3A. The imaging device 4 is preferably disposed at an angle such that the center of the blind spot B, which may be generated by the light control glass plate 2 whose transmittance is reduced, and the center of the imaging region 41, as shown in FIG. 3A. Be done. In addition, as shown in FIG. 3B, the imaging device 4 may be disposed at a central portion in the vehicle width direction, for example, the back surface (surface facing the front of the vehicle C) of the rearview mirror (rear view mirror) RM. In FIG. 3B, the light control glass plate 2 is provided in the front portion of the driver's seat, and the second light control glass plate 2c is provided in front of the passenger seat at a distance from the light control glass plate 2 It is an example. An imaging device 4 is disposed between the two light control glass plates 2 and 2c. FIG. 3B shows a blind spot B which can be produced by lowering only the transmittance of the light control glass plate 2 in front of the driver's seat.

  As shown in FIGS. 3A and 3B, the imaging device 4 is arranged such that, for example, at a position far ahead of the front end C1 of the vehicle C, all of the blind spots B fall within the imaging region 41. For example, a camera provided with a lens having an angle of view that can provide such an imaging region 41 is used as the imaging device 4. Alternatively, the imaging device 4 is disposed at a position and an angle suitable for obtaining such an imaging region 41.

  The imaging device 4 is not limited to the position shown in FIGS. 3A and 3B, and may be disposed at any position where an appropriate imaging area 41 can be obtained. For example, the imaging device 4 may be disposed near an edge in the vehicle width direction of the windshield CG or on a dashboard (not shown). It is preferable that an antifouling coating using a photocatalytic effect such as titanium oxide is provided on the surface of the front glass CG facing at least the part facing the imaging device 4 and facing the outside of the vehicle.

  The imaging device 4 is not particularly limited as long as it can image a scene in a desired imaging area and can generate imaging data in a format that can be processed by the data processing circuit 5. For example, as the imaging device 4, a digital camera having a CCD image sensor or a CMOS image sensor is exemplified. Light energy based on a scene in an imaging region is converted into an electrical signal by light receiving elements arranged in a matrix inside a CCD image sensor or the like for every minute area, and imaging data based on those electrical signals is generated . Preferably, a camera having an image sensor capable of color imaging or the like is used for the imaging device 4.

  In FIG. 3A, the imaging device 4 is enlarged and schematically shown in a circle Z indicated by an alternate long and short dash line. The imaging device 4 of the sunshade device 1 of the present embodiment includes the lens 4b having a surface on which the covering layer 4a is formed to reduce the reflection of light by adjusting the refractive index. The imaging device 4 captures an image of an area outside the vehicle of the second surface 2b of the light control glass plate 2 illuminated by the sun. Therefore, the imaging device 4 is required to perform imaging under back light. Therefore, the lens 4 b of the imaging device 4 is provided with the covering layer 4 a. The covering layer 4a can suppress the occurrence of flare and ghost that are likely to occur in shooting under backlight. The covering layer 4a can be formed by forming a plurality of nano-sized wedge-shaped structures on the surface of the lens 4b or forming a layer of nano-sized particles on the surface of the lens 4b. Note that the imaging device 4 may not necessarily include the lens having the covering layer 4a.

  The operation of the light control glass plate 2 will be described with reference to FIGS. 4A and 4B. The sectional structure of the light control glass plate 2 is schematically shown in FIGS. 4A and 4B. Specifically, as shown in FIGS. 4A and 4B, the light control glass plate 2 includes, in addition to the two glass plates 21a and 21b described above, two conductive films 22b and 22c for transmitting light. And liquid crystal molecules 22a enclosed between the two conductive films 22b and 22c. A liquid crystal sheet 22 is configured by the conductive films 22 b and 22 c and a plurality of liquid crystal molecules 22 a.

  In the present embodiment, the glass plates 21a and 21b constitute a windshield CG (see FIG. 2) together with the transparent sheet TS (see FIG. 2) in the region where the liquid crystal sheet 22 is not disposed. Although float glass is illustrated as a kind of glass plate 21a, 21b, the kind of glass plate 21a, 21b will not be specifically limited if it has a fixed translucency. The material of the conductive films 22 b and 22 c is not particularly limited as long as it has translucency and conductivity. For example, indium tin oxide (ITO) or zinc oxide can be used for the conductive films 22 b and 22 c. As described later, the display device 3 is preferably an organic EL display panel, and the display device 3 preferably contains an organic material. In order to reduce stress on the organic material caused by ultraviolet light and heat, it is preferable that the light control glass plate 2 has a light shielding property to ultraviolet light and / or infrared light. For example, an intermediate film (not shown) that absorbs ultraviolet light and infrared light may be provided between the glass plates 21a and 21b.

  The liquid crystal molecules 22a have an elliptical shape. As shown in FIG. 4A, when a voltage of a predetermined magnitude is applied between the conductive film 22b and the conductive film 22c, the plurality of liquid crystal molecules 22a are substantially parallel to the thickness direction of the light control glass plate 2. Oriented in the As a result, light can be transmitted through the light control glass plate 2.

  On the other hand, as shown in FIG. 4B, when no voltage is applied to the conductive films 22b and 22c, the plurality of liquid crystal molecules 22a direct their elliptical shapes in arbitrary directions into the liquid crystal sheet 22. Existing. In the state shown in FIG. 4B, light is blocked by the light control glass plate 2 (specifically, liquid crystal molecules 22a). The orientation of the plurality of liquid crystal molecules 22a changes based on the magnitude of the voltage applied between the conductive film 22b and the conductive film 22c. Therefore, the transmittance of light in the light control glass plate 2 can be controlled by controlling the magnitude of the voltage applied between the conductive film 22 b and the conductive film 22 c.

  In the shading device 1 of the present embodiment, when the light transmittance of the light control glass plate 2 falls below a predetermined reference value, the display image based on the imaging data generated by the imaging device 4 is automatically displayed on the display 3 It may be configured to be displayed. When the sunlight is blocked by the light control glass plate 2, the operation by the driver M or the like of the vehicle necessary for displaying the view of the part hidden by the light control glass plate 2 on the display device 3 can be reduced. For example, an illuminance sensor (not shown) or the like capable of detecting the intensity of light is provided on the surface of the glass plate 21b facing the casing of the light control glass plate 2. In addition, a switch for a display device (not shown) different from the switch 6 described above is provided in the supply circuit of the power supply voltage in a normally open state so that the power supply voltage is not always supplied to the display 3. . The switch for the display device is set to switch from the open state to the closed state when the illuminance sensor detects the illuminance below the predetermined reference value as the intensity of the light transmitted through the light control glass plate 2. As a result, an image can be automatically displayed on the display device 3 when the light transmittance of the light control glass plate 2 falls below a predetermined reference value. In addition, a comparator for the light control glass plate (not shown) for comparing the voltage applied to the light control glass plate 2 with the predetermined voltage without providing the illuminance sensor etc. is provided, and the comparison for the light control glass plate The open / close state of the display device switch may be switched based on the output of the controller. The display device switch (not shown) may be provided not in the supply circuit of the power supply voltage to the display device 3 but in the transmission line of the display image data between the display device 3 and the data processing circuit 5.

  The transmittance of the light control glass plate 2 and the display of the image on the display device 3 may not necessarily be interlocked with each other. For example, when the transmittance of the light control glass plate 2 is high, an image may be displayed on the display device 3. When the outside of the vehicle is dark, such as at night, the display device 3 can display an image that can be sufficiently viewed by the driver even if the light transmittance of the light control glass plate 2 is high. In such a case, arbitrary information may be displayed on the display device 3, while in the situation where there is no object to be viewed in the part hidden by the light control glass plate 2 whose light transmittance is lowered. The display device 3 may be in the OFF state regardless of the light transmittance of the light control glass plate 2.

  When the imaging device 4 (see FIG. 1) is disposed inside the vehicle compartment, as shown in FIG. 4C, a portion of at least one of the conductive films 22b and 22c facing the lens 4b of the imaging device 4 is It may be formed separately from the surrounding part. That is, even if at least one of the conductive films 22b and 22c has a portion (imaging device facing portion 221) opposed to the imaging device 4 disposed inside the vehicle compartment and insulated from the surroundings Good. By doing so, a voltage can be applied to the imaging device facing portion 221 independently of the other portions 222. For example, by applying a voltage only to the imaging device facing portion 221, the light transmittance of only the imaging device facing portion 221 in the light control glass plate 2 can be increased. Even when the light control glass plate 2 is provided up to the upper edge of the windshield, and the transmittance of the light control glass plate 2 is entirely lowered to block sunlight, the image pickup device facing portion 221 with high light transmittance. The image of the scene in front of the vehicle can be taken without hindrance. Further, instead of providing the imaging device facing portion 221 in the conductive films 22b and 22c, a notch may be provided in a portion facing the imaging device 4 in the liquid crystal sheet 22 (see FIG. 4A). Even with such a configuration, when the transmittance of the light control glass plate 2 is lowered, a scene in front of the vehicle can be imaged through the cutaway portion.

  Preferably, the light control glass plate 2 is preferably provided below the lower end position PL (see FIG. 2) of the display device 3 in the vertical direction of the vehicle. When sunlight is to be blocked, it is possible to prevent the display device 3 from being irradiated with sunlight from a direction higher than at least the horizontal direction. In addition, preferably, light control glass plate 2 has a margin larger than the thickness of a window (such as front glass CG) with respect to display device 3 also in the vehicle width direction of the vehicle at each of both ends in the vehicle width direction. Is formed. By forming in this manner, it is possible to prevent the display device 3 from being irradiated with sunlight from a direction within 45 degrees at least to the left and right with respect to the front of the vehicle when sunlight is to be blocked.

  When the lower limit of the light transmittance of the window glass of the vehicle is defined for each region in the window glass in a country where the vehicle sunshade device 1 of this embodiment is used, the light transmittance of the window glass is defined. It is preferable that the light control glass plate 2 be provided in the non-region. Even when the light transmittance of the light control glass plate 2 is lower than the lower limit value of the light transmittance in the country in the highest state, the sunshade device 1 can be used without breaking the law. Moreover, it also becomes possible to use the light control glass plate 2 with such a low light transmittance for the sunshade device 1 of this embodiment.

  For example, in Japan, under the Ministry of Land, Infrastructure, Transport and Tourism's ordinance "Security Standard for Road Transport Vehicles", a standard of 70% or more with respect to visible light is set for the transmittance of windshields of automobiles. However, “the upper edge of the front glass and within 20% of the actual length of the glass opening on the plane parallel to the vehicle center plane” does not define the light transmittance. Therefore, preferably, as shown in FIG. 5, the light control glass plate 2 is a window glass (front glass CG in the present embodiment) to a plane PV perpendicular to the front-rear direction of the vehicle (in the present embodiment, the automobile C). The projection image IM is provided on at least a part (for example, the front portion of the driver's seat) of the area within the upper 20% in the projected image IM. That is, preferably, light control glass plate 2 is provided in a part of the region from the upper end of windshield CG to straight line I2 in FIG. 5 (however, in FIG. 5, (length of arrow L2) / (arrow LM). Length) = 0.8). Currently, work on international harmonization of automobile safety and environmental standards is underway, such as at the World Forum on Harmonization of Automobile Standards established under the United Nations Economic Commission for Europe. The forum has 51 countries (regions) in the 1958 Agreement, and 33 countries (regions) in the 1998 Agreement. Global technical standards for windshields are under development as of 2016, but those that meet the above-mentioned standards in Japan are considered to be able to at least meet the regulations of each country that joins the above-mentioned World Forum.

  The display device 3 is formed of a translucent material, and is fixed to the light control glass plate 2 by, for example, an optical clear adhesive (OCA: Optical Clear Adhesive) provided in a sheet state. Instead of OCA, the display device 3 may be bonded to the light control glass plate 2 using an optical clear resin (OCR: Optical Clear Resin) provided in a liquid state and cured by UV irradiation. The fixing means of the display device 3 to the light control glass plate 2 is not particularly limited. The display device 3 is not particularly limited as long as it has an image display function and can be made of a translucent material. The display device 3 is exemplified by an organic EL display panel which can be formed in a thin shape and does not require a color filter, a backlight or the like which can be an element to lower the light transmittance. In the present embodiment, the display device 3 is disposed on the light control glass plate 2 which constitutes a part of the windshield CG. Since the windshield CG is inclined with respect to the vertical direction of the vehicle C, the driver M or the like tends to look at the display device 3 obliquely to the normal to the display surface of the display device 3. Therefore, an organic EL display panel having a preferable viewing angle characteristic as compared with a liquid crystal display device or the like is preferable also in terms of the visibility to the driver M or the like.

  Furthermore, since many of the windshields CG are formed to curve toward the outside of the vehicle in the vertical direction and in the vehicle width direction of the vehicle, the surface of the windshield CG has a gentle spherical shape. Therefore, the first surface 2a (see FIG. 2) of the light control glass plate 2 which constitutes a part of the windshield CG can actually have a curved surface like the inner circumferential surface of a hollow sphere. When the display device 3 is fixed to such a curved surface, the display device 3 is bent and partially extended as necessary so that air bubbles and the like are not caught in the interface with the light control glass plate 2 Need to be fixed. Therefore, the display device 3 is preferably an organic EL display panel formed using a flexible film having a surface on which an organic material is laminated.

  A cross-sectional view of one pixel of the organic EL display panel 30 that can constitute the display device 3 is illustrated in FIG. A switch element such as a TFT 38 is formed for each of the R, G, and B sub-pixels on a flexible film 37 made of resin or the like, and a first electrode (for example, an anode) is formed on a planarization film 31 formed thereon. ) 32 are formed. The flexible film 37 is formed of, for example, a transparent polyimide resin. Further, the first electrode 32 is formed of, for example, a conductive material having translucency such as an ITO film, and is connected to a switch element such as the TFT 38. The TFT 38 is formed of, for example, a transparent amorphous oxide semiconductor such as an oxide of indium gallium zinc. Note that the TFTs 38 do not necessarily have to be formed of a translucent material, and for example, the TFTs 38 may be formed using low temperature polysilicon (LTPS) outside the individual pixel regions.

  Further, in the present embodiment, as described above, the display device 3 may be stretched when fixed to the light control glass plate 2. Therefore, it is preferable that the TFT 38 be formed of an organic semiconductor material that can be stretched more than the inorganic semiconductor material. For example, the TFT 38 is formed of an organic semiconductor material such as pentacene, copper phthalocyanine or fluorinated phthalocyanine.

An insulating bank 33 made of SiO ₂ or the like is formed between the sub-pixels. An organic layer 34 is vapor-deposited in a region surrounded by the insulating bank 33. In addition, although the organic layer 34 is shown by one layer in FIG. 6, in fact, the organic layer 34 may be formed by the laminated film of multiple layers which consist of an organic material from which translucency differs.

A second electrode (for example, a cathode) 35 is formed on the organic layer 34 by using an evaporation method or the like so as to have transparency by forming an Mg—Ag alloy layer or an alkali metal layer sufficiently thinner than the wavelength of light. It is formed. Furthermore, on the surface of the second electrode 35, a protective film 36 made of, for example, Si ₃ N ₄ or the like is formed. Each element shown in FIG. 6 is entirely sealed by a seal layer made of a resin film or the like (not shown) so that the organic layer 34 and the second electrode 35 do not absorb moisture, oxygen and the like. The cross-sectional structure shown in FIG. 6 is merely an example, and the structure of the organic EL display panel 30 constituting the display device 3 and the material of each component are not limited to the structures and materials described herein.

  In the organic EL display panel 30 used in the sunshade device 1 according to the present embodiment, the first electrode 32 and the second electrode 35 are formed at substantially the same intervals in any of the R, G, and B sub-pixels. It is done. In other words, the first electrode 32 and the second electrode 35 are not intentionally different in the distance between each other for each color sub-pixel. On the other hand, in a general organic EL display panel, the light emitted from the organic layer repeats reflection between the anode and the cathode in order to increase the intensity of light emitted in the direction perpendicular to the display surface of the panel. The distance between the anode and the cathode of each sub-pixel is matched to the wavelength of the light of the color emitted by that sub-pixel (microcavity structure). That is, in a general organic EL display panel, the distance between the anode and the cathode is different for each sub-pixel of each color.

  However, in the sunshade device 1 of the present embodiment, as described above, the display device 3 is often viewed by the driver M from an oblique direction. Therefore, it is not particularly necessary to increase the intensity of the light emitted in the direction perpendicular to the display surface of the display device 3, but rather, R, G, B so that the chromaticity does not change significantly even if the angle changes. It is more important to match the viewing angle dependency of each color. Therefore, unlike the general organic EL display panel, the first and second electrodes 32 and 35 of the organic EL display panel 30 used in the sunshade device 1 of the present embodiment do not utilize the microcavity effect. For example, the first electrode 32 and the second electrode 35 may be separated by approximately the same distance between the R, G, and B sub-pixels. With such a structure, an image can be displayed with substantially uniform display quality even with respect to a line of sight from a direction other than the direction perpendicular to the display device 3. In other words, in the sunshade device 1 of the present embodiment, the distance between the cathode and the anode in each sub-pixel may not match the wavelength of the light emitted by that sub-pixel. That is, the organic EL display panel 30 includes a plurality of sub-pixels, and each of the plurality of sub-pixels has two electrodes arranged at an interval different from the wavelength of light emitted from each of the plurality of sub-pixels May be included.

  Furthermore, in the sunshade device 1 of the present embodiment, the light intensity in a specific direction, preferably in the direction toward the driver's eye, is enhanced rather than the light in the direction perpendicular to the display surface of the display device 3 Is preferred. Therefore, it is preferable that the length of the optical path between the two poles of light reflected between the anode and the cathode at a specific reflection angle (incident angle) other than 90 degrees match the wavelength of the light. That is, the reflection angle β of light at each electrode at which the optical path length of reciprocation between two electrodes (anode and cathode) matches the wavelength of light emitted by each sub-pixel or an integral multiple of that wavelength is 90 Preferably, two electrodes (anode and cathode) of each sub-pixel are provided so as to be smaller than zero. In other words, the two electrodes (anode and cathode) preferably have a round-trip optical path length between the two electrodes for light reflecting at an angle smaller than 90 degrees at least one of the two electrodes, The sub-pixels are arranged at predetermined intervals, which should be the wavelength of light emitted by each sub-pixel or the integral multiple of the wavelength. Unlike the general organic EL display panel described above, the intensity of light emitted in a specific direction other than the vertical direction can be increased.

  For example, according to Snell's law, the cathode and the anode of each sub-pixel are arranged such that the aforementioned reflection angle β (rad) becomes sin β = sin ((π / 2)-α) / n. Here, α (rad) is the angle of the display surface of the display device 3 with respect to the horizontal axis of the vehicle (see FIG. 2). Further, n (non-dimensional) is the light R1 at the interface between the electrode (the second electrode 35 in the example of FIG. 6) and the organic layer 34 closer to the light emission surface in the display 3 (organic EL display panel 30). The ratio of the sine of the incident angle (= reflection angle .beta.) To the sine of the outgoing angle .theta. Of the light R2 emitted from the display 3 with respect to the emission surface of the display 3. FIG. In the display device 3 disposed obliquely to the horizontal axis of the vehicle, the intensity of light emitted in the direction parallel to the horizontal axis can be increased. The ratio n is uniquely determined from materials such as the second electrode 35, the protective film 36, and the seal layer (not shown), and the wavelength of light emitted by each sub-pixel. When the light intensity in the direction inclined by an angle γ (rad) from the direction perpendicular to the display surface of the display device 3 is to be increased, the above-mentioned reflection angle β should be sin β = sin γ / n. The cathode and the anode of each sub-pixel are arranged.

  In a dot matrix type display device such as an organic EL display panel, the respective devices are generated by a driver 39 (see FIG. 7A) that generates a signal input to the TFT 38 based on display image data from the data processing circuit 5 (see FIG. 9). The pixels are driven. The driver 39 can be configured by, for example, a display device driver IC, a mounting substrate for the display device driver IC, and the like. For example, a source signal and a gate signal necessary for image display in the display device 3 are generated by the driver 39 at appropriate timings and input to the TFT 38.

  An example of the arrangement of the driver 39 is shown in FIG. 7A. In FIG. 7A, the peripheral portion of the light control glass plate 2 is shown as a view from the front of the automobile C. The car C and the windshield CG are indicated by two-dot chain lines. As shown in FIG. 7A, a driver 39 for driving the pixels of the display device 3 based on the display image data is disposed in the ceiling portion CC of the passenger compartment. A wire 39a connecting the display device 3 and the driver 39 is disposed across the display device 3 and the ceiling portion CC. For example, a plurality of wirings 39a are provided in accordance with the number of columns of a plurality of pixels arranged in a matrix in the display device 3 and the number of rows. Each of the plurality of wirings 39a is connected to the TFT of the pixel arranged in each column or each row.

  As described above, the light control glass plate 2 is preferably provided at the upper edge of the windshield CG. Therefore, in many cases, the display device 3 is formed in a rectangular shape whose longitudinal direction is the vehicle width direction of the automobile C. Therefore, as shown in FIG. 7A, the driver 39 is preferably disposed at the ceiling portion CC of the cabin, and a plurality of wires 39a are drawn from the edge parallel to the longitudinal direction of the display device 3. The internal wiring (not shown) of the display device 3 provided from the proximal end to the distal end to the driver 39 can be shortened to connect the wiring 39a and the TFT in each column or row. It is possible to reduce heat generation due to voltage drop in internal wiring (not shown) and conductor resistance of internal wiring. In the case where an organic EL display panel which is a current drive type is used for the display device 3, the arrangement of the driver 39 as shown in FIG. 7A is particularly preferable. The driver 39 is disposed, for example, at the top of the interior (not shown) of the ceiling portion CC.

  FIG. 7B shows an example of the arrangement of the wiring 39a in an enlarged view of a cross section perpendicular to the vehicle width direction. The driver 39 is disposed between an interior material IB provided at the ceiling of the cabin and an exterior plate EB that constitutes the roof of the vehicle (car C). The upper end portion of the window glass (front glass CG) of the vehicle is adhered to the surface of the end of the exterior plate EB facing the outside of the vehicle using an adhesive AD. The light control glass plate 2 is provided on a part of the window glass so as to separate the inside of the passenger compartment from the outside of the passenger compartment. As described above, the light control glass plate 2 may be provided on part of the surface of the window glass of the vehicle facing the inside of the compartment. Then, from the space where the wiring 39a connecting the display device 3 and the driver 39 is formed between the interior material IB and the exterior plate EB and the driver 39 is disposed, adhesion to the window glass in the exterior plate EB It is pulled out to the inside of the passenger compartment through the space between the parts and the interior material IB. The driver 39 and the display device 3 can be connected by the wiring 39a having a short wiring length. In the example of FIG. 7B, the sound insulation material SP is disposed between the exterior plate EB and the interior material IB. Unlike the example of FIG. 7B, the sound insulation material SP may extend between the driver 39 and the exterior plate EB and / or the interior material IB. The driver 39 may be fixed to the surface of the exterior plate EB facing the interior of the vehicle or the surface of the interior material IB facing away from the vehicle compartment using an appropriate fixing means, via the sound insulation material SP or other members, It may be fixed to exterior plate EB or interior material IB. The placement location of the driver 39 is not limited to the ceiling of the vehicle. Further, the arrangement of the wires 39a is not limited to the example shown in FIG. 7B.

  The shading device 1 of the present embodiment may further include a detector (first detector 8) that detects the position of the driver M's eye. For example, as shown in FIG. 8, the first detector 8 is an analyzer that analyzes captured images of the eye detection cameras 8a and 8b and the eye detection cameras 8a and 8b respectively installed at two known positions. (Not shown) The eye detection cameras 8a and 8b each include, for example, a far infrared sensor, and generate temperature data of each part in the imaging region. The eyeballs of ordinary people are characterized by being cooler than the other parts of the face. An analyzer (not shown) specifies the position of the face of the driver M and the position of the eye in the image taken by the eye detection cameras 8a and 8b based on the temperature data generated by the eye detection cameras 8a and 8b. . A general digital camera may be used as the eye detection camera 8a, 8b, and the position of the eye may be specified by image recognition in an analyzer (not shown).

  By specifying the position of the driver M's eye in the photographed image of the eye detection camera 8a, 8b, a straight line L1 connecting the two eye detection cameras 8a, 8b at known positions, and the eye detection camera 8a , 8b and the straight line connecting the eyes of the driver M, angles θ1 and θ2 are specified. Then, based on the length of the straight line L1 and the angles θ1 and θ2, trigonometry is used to specify the position of the eye of the driver M with respect to the eye detection cameras 8a and 8b. Only the position of either one of the both eyes of the driver M may be specified, or the positions of both eyes may be specified respectively. If the positions of both eyes are specified, for example, the position of the midpoint of the line connecting the two eyes is calculated, and the position of the midpoint is treated as the position of the driver M's eye. In addition, when one of the eyes is preferentially used at the time of driving (for example, when the driver M damages the other eye, when it is desired to visually recognize the image with the effective eye, etc.), the sunshade of this embodiment The apparatus 1 preferably has an auxiliary unit for switching from the setting based on both eyes to the setting based on one eye and designating which of the right eye and the left eye is to be used, and is input to the auxiliary unit The information is used for data processing by a display target data selection circuit 53 described later. As shown in FIG. 8, the eye detection cameras 8a and 8b are disposed one by one at the pillar C2 and at the central portion in the vehicle width direction in the vehicle compartment and in the vicinity of the windshield. However, the eye detection cameras 8a and 8b are not limited to the position shown in FIG. 8 and may be provided at any position that can detect the position of the driver M's eye. The method of using the detection result of the first detector 8 will be described later. When the second display device 3b (see FIG. 1) is provided as described above, in addition to the driver's eye detection cameras 8a and 8b shown in FIG. A detector (not shown) may be provided to detect the position of. Such a detector for the front passenger seat can also be used for processing of an image to be displayed on the second display device 3b or the like, as in the method of using the first detector 8 described later.

  The main components of the sunshade device 1 of this embodiment are illustrated in a block diagram in FIG. The imaging data generated by the imaging device 4 is sent to the data processing circuit 5. The display image data generated by the data processing circuit 5 based on the imaging data is sent to the driver 39, and each pixel of the display device 3 is driven by the pixel signal generated by the driver 39. As a result, an image based on the display image data is displayed on the display unit 3 a of the display device 3. The aforementioned first detector 8 is connected to the data processing circuit 5.

  As shown in FIG. 9, the sunshade device 1 of the present embodiment further includes a second detector 9 and a control circuit 7 connected to the second detector 9. The control circuit 7 is connected to the switch 6. The switch 6 is connected between the power supply line V and the light control glass plate 2 in the example of FIG. Note that FIG. 9 is only an example of the configuration of the sunshade device 1 in the present embodiment, and the sunshade device 1 may not necessarily include all the components shown in FIG. 9, and is shown in FIG. It may further include no component. Further, the internal configuration of the data processing circuit 5 is not limited to that shown in FIG. The control circuit 7, the second detector 9, and the data processing circuit 5 will be described in order below.

  The second detector 9 detects the intensity of incident light that is incident on the light control glass plate 2. Examples of the second detector 9 include, for example, a photodiode, a phototransistor, and an illuminance sensor. However, the second detector 9 is not limited to the above as long as it can output the detection result according to the light intensity. The second detector 9 is preferably arranged around the light control glass plate 2 in the vehicle compartment or on the dashboard. The second detector 9 can be disposed at any position as long as it can be irradiated in the sun light irradiating the light control glass plate 2.

  The control circuit 7 transmits light at the light control glass plate 2 when the intensity of incident light incident on the light control glass plate 2 exceeds a preset threshold value based on the detection result of the second detector 9. The switch 6 is controlled to lower the rate. An output signal of the control circuit 7 is input to a control terminal (not shown) of the switch 6. The control circuit 7 compares, for example, the detection result of the second detector 9 with a predetermined threshold, and the detection result of the second detector 9 is illuminated by incident light having an intensity equal to or higher than the predetermined threshold. Control the switch 6 to the open state. The application of the voltage from the power supply line V to the light control glass plate 2 is stopped. As a result, as described above, the light transmittance of the light control glass plate 2 is lowered, and the sunlight is blocked by the light control glass plate 2. As described above, when the switch 6 can switch the magnitude of the voltage input to the light control glass plate 2 stepwise or continuously, it is preferable that the control circuit 7 also switch the state of the switch 6 in multiple stages. . The control circuit 7 can be configured, for example, by a comparator or a combination of several gate elements. The control circuit 7 may be configured by a microcomputer or a part of a gate array, or may be included in the data processing circuit 5.

  Data processing circuit 5 is a circuit block having a unique function, data generation circuit 50, angle identification circuit 51, data processing circuit 52, display target data selection circuit 53, memory circuit 54, comparison circuit 55, and display image A highlighting circuit 56 is included. The display target data selection circuit 53 includes a memory circuit 53a. These circuit blocks may partially or entirely share the same circuit element. The data processing circuit 5 can be formed by an arbitrary signal processing semiconductor device such as a microcomputer, an ASIC, or an FPGA and a peripheral circuit thereof. The microcomputer or the like operates in accordance with software that defines a predetermined processing procedure. Each circuit block in the data processing circuit 5 may be formed individually using a semiconductor product circuit device or an individual semiconductor element.

  The data generation circuit 50 is a circuit block having a basic function of the data processing circuit 5, and generates display image data including information on the light emission intensity and the light emission timing for each pixel of the display device 3 based on the imaging data. The data generation circuit 50 may be, for example, a so-called timing controller and its peripheral circuits that are used for generation of drive signals of an organic EL display panel or the like and operate according to software that defines a predetermined processing procedure.

  The functions of data processing circuitry 52 and angle identification circuitry 51 are described below with reference to FIGS. 10A, 10B, 11A and 11B. FIG. 10A shows a state in which the driver M looks at the traffic light S1 through the sun protection device 1 when the light transmittance of the light control glass plate 2 of the sun protection device 1 is high. As illustrated in the left illustration in FIG. 10A, the image of the traffic light S1 is almost properly captured by the eye of the driver M. On the other hand, FIG. 10B shows a state in which the driver M sees the traffic light S1 reflected on the display device 3 of the sunshade device 1 with the light control glass plate 2 blocking the front view. In the present embodiment, the display device 3 is disposed on the first surface 2 a of the light control glass plate 2 which constitutes a part of the windshield CG. Since the windshield CG is inclined with respect to the vertical direction of the vehicle C, as shown in the left side view in FIG. 10B, the image of the traffic light S1 has a shape that is reduced and distorted in the vertical direction and the driver M's eyes Can be captured by

  The data processing circuit 52 picks up imaging data to enlarge an image based on imaging data in at least one direction and display the image on the display 3 so that the image displayed on the display 3 is properly captured by the driver M's eye Process the For example, the data processing circuit 52 replaces the data of the pixel two pixels above the central pixel in the vertical direction of the region to be displayed on the display device 3 in the imaging data with the data of the pixel one pixel above the central pixel. In addition, data of pixels three pixels above and four pixels above the central pixel are replaced with data of pixels two pixels above the central pixel (data before being replaced as described above). The data processing circuit 52 performs such data correction on imaging data corresponding to the area to be displayed on the display device 3 in both the upper and lower directions. By performing such correction, the image displayed on the display device 3 can be doubled in the vertical direction. For example, an arbitrary reference position is assumed as the position of the eye of driver M, and the display is performed at a constant enlargement factor determined based on the reference position and the angle of display 3 (for example, the angle with respect to the vertical direction of vehicle C). The image displayed on the device 3 is stretched.

  In addition, the data processing circuit 52 may process the imaging data based on the angle θA of the line of sight I of the driver M directed to the display unit 3a with respect to the display unit 3a (see FIG. 1) of the display device 3. In this case, the data processing circuit 52 cooperates with the angle identification circuit 51.

  The angle identification circuit 51 identifies an angle θA of the line of sight I of the driver M directed to the display unit 3a with respect to the display unit 3a (see FIG. 1) of the display device 3 based on the detection result of the first detector 8. . Specifically, the angle identification circuit 51 identifies an angle θA between the display surface 3aa of the display unit 3a and the line of sight I of the driver M. Since the display device 3 is fixed to the windshield CG, the positional relationship between the display device 3 and the two eye detection cameras 8a and 8b (see FIG. 8) at known positions is known. In addition, as described above, the first detector 8 can detect the position of the eye of the driver M with respect to the eye detection cameras 8a and 8b. Therefore, the position of the eye of the driver M with respect to the display device 3 is also specified, and the direction of the line of sight I of the driver M who views the display device 3 can be specified. Moreover, since the display device 3 is fixed to the windshield CG, the angle of the display surface 3 aa of the display device 3 is unchanged. Therefore, based on the detection result of the first detector 8, the angle θA between the display surface 3aa of the display device 3 and the line of sight I of the driver M can be specified. The angle identification circuit 51 operates, for example, according to software including a procedure for specifying the angle θA in this manner.

  Thus, when the angle identification circuit 51 identifies the angle θA, the data processing circuit 52 enlarges the image displayed on the display device 3 in the vertical direction by the difference Δθ of the angle θA with respect to the predetermined reference angle. It may be selected based on For example, as the angle θA between the display surface 3aa of the display device 3 and the line of sight I of the driver M deviates from the reference angle 90 degrees, the display image is stretched vertically at a larger magnification. Note that the position of the driver M's eye can not be detected for a long period of time due to a malfunction of the first detector 8 or the presence of an inhibiting factor of the detection function (for example, the driver M wears sunglasses etc.) Can be considered. In such a case, the data processing circuit 52 may select the image enlargement ratio on the assumption that the driver M's eye is at a preset reference position. Further, in a state in which the position of the eye can not be detected temporarily, such as when the operation of the first detector 8 can not follow the rapid movement of the driver M's eye, the data processing circuit 52 The magnification of the image may be selected based on the position of the eye detected just prior to falling into such a condition.

  The data processing circuit 5 generates display image data in the data generation circuit 50 based on the imaging data processed by the data processing circuit 52. By doing so, an image based on imaging data is displayed on the display device 3 in an enlarged manner in at least one direction. When the sunshade device 1 includes the first detector 8 and the angle identification circuit 51, an image based on imaging data is enlarged, for example, in the vertical direction based on the position of the driver M's eye, and displayed on the display device 3. Is displayed. For example, as shown in FIG. 11A, the actual display device 3 displays an image stretched in the vertical direction. However, for the driver, as shown in FIG. 11B, it is captured as an image having a shape close to the shape of the original display object (the traffic light S1 in FIG. 11B). That is, it is considered that the driver can easily recognize the display object. The data processing circuit 52 may correct the display image data generated by the data generation circuit 50.

  The data processing circuit 52 processes the imaging data to enlarge and display the image based on the imaging data on the display device 3 in the vehicle width direction of the vehicle in addition to or instead of the vertical direction of the vehicle as described above You may Then, the data processing circuit 5 may generate display image data based on the imaging data that has been processed by the data processing circuit 52 that performs data processing as described above. As a result, the image based on the imaging data is enlarged in the vehicle width direction, or in both the vehicle width direction and the vertical direction based on the position of the driver M's eye or based on any reference position. May be displayed on the display device 3.

  For example, as shown in FIG. 12, when the display device 3 is provided over the entire vehicle width direction, the line of sight I of the driver M and the display surface 3aa of the portion near the front passenger seat in the display device 3 are relatively It is possible to make an acute angle which deviates from a large right angle (in FIG. 12, the display device 3 is shown as being arranged along the vertical direction of the vehicle for the sake of easy understanding). Therefore, the image displayed on the display device 3 at a position close to the front passenger seat has a distorted shape similar to the display image illustrated in FIG. 10B, but unlike the FIG. It is caught by M eyes. The same applies to the case where the second display device 3b (see FIG. 1) is provided. The data processing circuit 52 may process imaging data in the vehicle width direction in the same manner as the processing described above in the vertical direction in cooperation with the first detector 8 and the angle identification circuit 51 described above. As a result, in the portion near the front passenger seat of the display device 3 and the second display device 3b, an image in which the driver M can easily recognize the display object can be displayed.

  Further, as shown in FIG. 12, the angles (angles in the horizontal plane) θB1, θB2,... ΘBn between the line of sight I of the driver M and the display surface 3aa of the display device 3 are from the driver M in the vehicle width direction. The greater the distance from the right angle, the greater the distance. Therefore, it is considered that the more distant the driver M is, the harder it is for the driver M to recognize the display image. The data processing circuit 52 displays a display image based on the display position in the vehicle width direction so that an image with good visibility is displayed at an arbitrary position in the vehicle width direction of the display device 3 or the second display device 3b. The enlargement factor may be selected to stretch out in the left-right direction. That is, the data processing circuit 52 may process the imaging data so that the image displayed at the position away from the driver's seat in the vehicle width direction is enlarged and displayed in the vehicle width direction at a larger enlargement factor. For example, in the data processing circuit 52, an image displayed in the vicinity of the position at which the driver M's eye I makes an angle θB2 in FIG. 12 is larger than an image displayed at a position near the eye I The imaging data may be processed so as to be enlarged and displayed in the vehicle width direction. By doing so, the image displayed at a position farther from the driver's seat in the vehicle width direction is enlarged at a large enlargement factor in the vehicle width direction, and the display 3 and / or the second display 3b (see FIG. 1) Is displayed on. As a result, an image that can be easily recognized by the driver M or the like in the entire vehicle width direction can be displayed on the display device 3 or the second display device 3b. The data processing circuit 52 processes the imaging data without cooperating with the first detector 8 and the angle discrimination circuit 51 also in the expansion in the vehicle width direction as in the case of the expansion in the vertical direction of the vehicle described above. It is also good. That is, the data processing circuit 52 uses a predetermined magnification set in advance for each display position in the vehicle width direction of the display device 3 or the second display device 3b with respect to the reference position of the driver M's eye. You may process imaging data.

  Next, the function of the display target data selection circuit 53 (see FIG. 9) will be described with reference to FIG. 13 and FIG.

  The display device 3 displays an image in the driver M's eyes without discomfort, by displaying only the view of the blind spot produced when the light transmittance of the light control glass plate 2 is low in the driver M's field of vision. It is considered to be preferable in terms of points. As shown in FIG. 13, assuming that the reference position PI of the eye of the driver M is assumed, a blind spot portion (reference) of the imaging area of the imaging device 4 based on the reference position PI and the size of the light control glass plate 2 The blind spot part BR) is determined. The imaging region is fixedly determined by the position and characteristics of the imaging device 4. If the position of the driver M's eye is fixed, by setting the area (reference display target area) corresponding to the reference dead angle part BR in the imaging data as the display target area, only the view of the blind spot is always displayed It can be displayed on the device 3. However, the position of the driver M's eye moves, thereby changing the blind spot. Therefore, it is preferable to change the display target area according to the fluctuation of the blind spot. The display target data selection circuit 53 determines a blind spot portion blocked by the light control glass plate 2 in the field of vision of the driver M of the vehicle (in the present embodiment, the car C) to realize such display. And select the display target data corresponding to the blind spot portion of the imaging data.

  The first detector 8 is connected to the display target data selection circuit 53 (see FIG. 9). Therefore, information on the position of the driver M's eye is input to the display target data selection circuit 53. Further, the display target data selection circuit 53 includes a memory circuit 53a (see FIG. 9). The memory circuit 53a stores, for each of various positions of the driver M, information on a difference between a dead angle portion BA generated by being blocked by the light control glass plate 2 and a reference dead angle portion BR. FIG. 13 shows, as an example, a blind spot portion BA when the eye of the driver M is at the position PA. For example, the memory circuit 53a stores the amount of movement in the vertical and horizontal directions with respect to the reference dead angle part BR, the enlargement ratio or the reduction ratio, etc., which are necessary for obtaining the actual position of the dead angle part BA. The display target data selection circuit 53 specifies the actual position of the blind spot BA by numerical operation or the like based on the information on the position of the eye of the driver M from the first detector 8 and the memory content of the memory circuit 53a. Do. Then, the display target data selection circuit 53 selects data of a region corresponding to the actual blind spot portion BA in the imaging data as display target data to be displayed.

  Then, the data generation circuit 50 generates display image data based on the selected display target data in order to cause the display device 3 to display the actual scene of the blind spot BA. As a result, as shown in FIG. 14, the reference display target region DR corresponding to the reference blind spot BR (see FIG. 13) in the imaging region 41 is changed (shifted upward in the example of FIG. 14) The image of the display target area DA to be actually displayed is displayed on the display device 3. An image with less discomfort can be displayed on the display device 3 in contrast to the view seen through the windshield.

  The display target data selection circuit 53 performs the same processing as the above-described processing in the vertical direction with respect to the vehicle width direction using the detection result of the first detector 8, thereby displacing the driver M's eye in the vehicle width direction. However, it is possible to select an appropriate display target area according to the blind spot portion in the driver M's view. For example, as described above, even when the display device 3 is provided over the entire vehicle width direction or when the second display device 3b (see FIG. 1) is provided, it is appropriate for the position of the driver M's eye. The display target area can be selected. That is, the positions of the edge of the light control glass plate 2 in the pillar C3 of the passenger seat (see FIG. 12) and the position of the edge of the edge in the pillar C2 of the driver seat (see FIG. 12) within the field of view of the driver M are It is grasped according to the position of the driver M's eye. As described above, information on the difference between the dead angle portion and the reference dead angle portion generated by the light control glass plate 2 provided over the entire vehicle width direction is stored for each of the various eye positions of the driver M, as described above. By referring to the information, an appropriate display target area can be selected also in the vehicle width direction. In that case, an image based on a blind spot portion blocked by the front portion of the passenger seat in the light control glass plate 2 of the view seen from the driver M on the front portion of the passenger seat in the display device 3 or the second display device 3b May be displayed. By doing so, it is possible to display an image with less discomfort for the driver M on the display device 3 in front of the front passenger seat.

  Note that the display target data selection circuit 53 may have a function of canceling the fine shaking of the image display caused by the relative slight movement of the driver M with respect to the vehicle body. For example, when the information from the first detector 8 (see FIG. 9) changes frequently more than a predetermined level, the display target data selection circuit 53 lengthens the sampling period of the information from the first detector 8. It may be configured to Further, the display target data selection circuit 53 may be configured not to newly start the operation of selecting display target data when the change in the position of the driver M's eye does not satisfy the predetermined condition. In addition, a low pass filter may be provided in an input portion of the display target data selection circuit 53 that receives information from the first detector 8.

  Next, the functions of the display image emphasizing circuit 56, the comparing circuit 55 and the memory circuit 54 (see FIG. 9) will be described with reference to FIGS. 15, 16A and 16B.

  The memory circuit 54 stores reference data regarding the appearance characteristics of a predetermined object that can be imaged by the imaging device 4 (see FIG. 1). In FIG. 15, an example of reference data 54a, 54b stored in the memory circuit 54 is conceptually shown as an image that can be reconstructed by the reference data 54a, 54b. That is, as shown in FIG. 15, in the memory circuit 54, appearance characteristics of an object which may be photographed by the imaging device 4 such as the traffic light S1 and the regulation mark S2 are converted into data and stored. For example, in the memory circuit 54, imaging data generated by actually imaging the traffic light S1 or the like with the imaging device 4 is stored. Alternatively, the shape of the traffic light S1 or the like may be modeled using unit elements such as a minute triangle, and the reference data 54a and 54b may be formed by the vertex coordinates of each unit element. Reference data may be formed in any manner. Although the memory circuit 54 is not particularly limited, it is formed of, for example, any semiconductor memory device such as SRAM and PROM. The same storage device may be shared with the memory circuit 53 a of the display target data selection circuit 53 described above.

  The comparison circuit 55 compares the imaging data generated by the imaging device 4 with the reference data 54 a and 54 b stored in the memory circuit 54. The comparison circuit 55 may, for example, reconstruct the imaging data and the reference data 54a, 54b into an image and compare them by a pattern recognition technique. In addition, if the data format of the imaging data and the reference data 54a and 54b is the same, both data may be sequentially compared in the unit of bit or byte as actual data. The method of comparison performed by the comparison circuit 55 is not particularly limited. The comparison circuit 55 detects approximate imaging data when there is approximate imaging data that is closer to one of the reference data 54a and 54b so as to satisfy a predetermined determination criterion by comparing the imaging data with the reference data 54a and 54b. Do.

  When the approximate imaging data is detected as a result of the comparison by the comparison circuit 55, the display image emphasizing circuit 56 emphasizes the display image of the predetermined object displayed based on the approximate imaging data more than the other display images. Display on the display device 3. Specifically, the display image emphasizing circuit 56 processes the display image data generated based on the approximate image pickup data among the display image data generated by the data generation circuit 50 (see FIG. 9).

  For example, as shown on the left side of the display device 3 of FIG. 16A, the display image emphasizing circuit 56 processes data of pixels around the image S11 of the object to be emphasized (traffic light) to make the image S11 stand out. The frame S12 surrounding the is displayed. Further, as shown on the right side of the display device 3 of FIG. 16A, data of pixels around the image S21 of the enhancement target (regulatory marker) may be processed, and the enlarged image S22 of the image S21 may be displayed. Further, as shown in FIG. 16B, the display image emphasizing circuit 56 emphasizes the luminance of the sub-pixel of the specific color in order to emphasize a specific color (for example, red or blue) in the display image S11, S21 of the emphasis object. May be increased.

  Further, when the approximate image pickup data is detected, the display image emphasizing circuit 56 causes the display device 3 to display the image to be displayed based on the image pickup data including the approximate image pickup data as a still image in a predetermined time frame. May be For example, display image data generated by the data generation circuit 50 is recorded in a video memory (not shown) or the like as needed. Then, when approximate image pickup data is detected, display image data sent to the display device 3 is recorded in a video memory (not shown) from display image data generated as needed by the data generation circuit 50 for a predetermined time. May be switched to the display image data. The display image emphasizing circuit 56 can emphasize a specific image in any manner without being limited to these methods. By such emphasis, it is possible to enhance the visibility of an object that needs to be recognized by the driver M.

Second Embodiment
In FIG. 17, the shading device 11 of the vehicle of the second embodiment is shown in a cross-sectional view at a position corresponding to FIG. In the shading device 11 of the vehicle of the second embodiment, the light control glass plate 12 is not provided on a part of the window glass (front glass CG) of the vehicle (car C), but the cabin of the window glass CG of the vehicle C It differs from the sunshade device 1 of the vehicle of the first embodiment in that it is provided on a part of the surface CGa facing inward. The light control glass plate 12 and the front glass CG are fixed, for example, by OCA or OCR exemplified as the adhesive between the display device 3 and the light control glass plate 2 described above. The light control glass plate 12 and the windshield CG can be bonded by any method that does not significantly reduce the transmittance of light passing through the shade device 11 and the windshield CG. In the vehicle sunshade device 11 of the second embodiment, the light control glass plate 12 may be formed separately from the windshield CG larger than the light control glass plate 12. The light control glass plate 12 can be formed relatively easily.

  The light control glass plate 12 has the same structure as the light control glass plate 2 of the sunshade device 1 of the vehicle of the first embodiment, and functions in the same manner as the light control glass plate 2 of the sunshade device 1 of the vehicle of the first embodiment. . In addition, the display 3 of the vehicle shade 11 according to the second embodiment, and the imaging device, data processing circuit, and switch not shown are also the display 3 and the imaging device 4 of the shade 1 of the vehicle according to the first embodiment. It has the same structure as data processing circuit 5 and switch 6, and can operate in the same manner. Moreover, the shading device 11 of the vehicle according to the second embodiment may also be provided with the first and second detectors, and also with the first and second detectors 8 of the shading device 1 of the vehicle according to the first embodiment, It can operate similarly to 9 respectively. Therefore, the further description of each component of the shading device 11 of the vehicle according to the second embodiment is omitted.

  In the above description, the sunshade devices 1 and 11 of the vehicles of the respective embodiments have been described by taking the case of being used for the windshield of a car as an example. However, it is to be understood that the vehicle shading device 1, 11 of each embodiment is not limited to that for the windshield, but can be adapted to the window glass of any vehicle, including the rear glass of a car.

<Summary>
The shading device for a vehicle according to aspect 1 of the present invention is provided on a part of the window glass of the vehicle so as to separate the inside of the vehicle compartment from the outside of the vehicle compartment, or the inside of the vehicle compartment on the window glass of the vehicle And a light control glass plate which is provided on a part of the surface facing the light, and which is capable of changing the light transmittance, and is formed using a translucent material, on the surface of the light control glass plate facing the inside of the casing And a display device disposed with the display unit facing the inside of the vehicle compartment, and an imaging device for imaging an area outside the vehicle opposite to the surface of the light control glass plate on which the display device is provided to generate imaging data And a data processing circuit that generates display image data to be displayed on the display unit based on imaging data generated by the imaging device, and a switch that switches the light transmittance of the light control glass plate It is characterized by There.

  According to the configuration of aspect 1 of the present invention, it is possible to intercept the sun rays only when it is needed without moving the sun shade device, and to display an image of a scene hidden in the sun shade device when the sun rays are blocked. be able to.

  In the shading device for a vehicle according to aspect 2 of the present invention, in the aspect 1, the data processing circuit processes the imaging data to display an image based on the imaging data in at least one direction on the display device. May further comprise a data processing circuit.

  According to the configuration of the second aspect of the present invention, it is possible to display an image that can be easily recognized by the driver of the vehicle or the like on the display device.

  In the shading device for a vehicle according to aspect 3 of the present invention, in the above aspect 2, an image based on the imaging data may be enlarged and displayed on the display device in the vehicle width direction and the vertical direction of the vehicle.

  According to the configuration of the third aspect of the present invention, it is possible to display an image that can be easily recognized by the driver or the like on the display device in both the vehicle width direction and the vertical direction of the vehicle.

  The vehicle shading device according to aspect 4 of the present invention further includes a first detector that detects the position of the driver's eye of the vehicle according to aspect 2 or 3, and the data processing circuit is configured to The data processing apparatus further comprises an angle identification circuit for identifying an angle of the driver's line of sight directed to the display unit with respect to the display unit based on the detection result of the detector, the data processing circuit The imaging data is processed, and the data processing circuit is processed by the data processing circuit to enlarge an image based on the imaging data in at least one direction based on the position of the eye and to display the image on the display device. The display image data may be generated based on subsequent imaging data.

  According to the configuration of the fourth aspect of the present invention, it is possible to display an image that can be easily recognized by the driver or the like on the display device according to the angle between the line of sight of the driver of the vehicle or the like and the display device.

  In the shading device for a vehicle according to aspect 5 of the present invention, in any of the above aspects 1 to 4, the display image based on the imaging data when the light transmittance of the light control glass plate falls below a predetermined reference value May be automatically displayed on the display device.

  According to the configuration of the fifth aspect of the present invention, when the sunlight is blocked by the light control glass plate, the operation by the driver of the vehicle or the like necessary for causing the display device to display the view of the part hidden by the light control glass plate It can be reduced.

  In the vehicle shade device according to aspect 6 of the present invention, according to any one of the above aspects 1 to 5, the display device is an organic EL display formed using a flexible film having a surface on which an organic material is laminated. It may be a panel.

  According to the configuration of the sixth aspect of the present invention, the visibility of the driver of the vehicle can be enhanced, and the display device can be easily fixed to the light control glass plate.

  In the vehicle sunshade device according to aspect 7 of the present invention, in the aspect 6, the organic EL display panel includes a plurality of sub-pixels, each of the plurality of sub-pixels having two electrodes, and the two The electrodes are arranged at a predetermined distance, and the predetermined distance is a length of a reciprocating optical path between the two electrodes of light reflected at an angle smaller than 90 degrees by at least one of the two electrodes. The wavelength may be a wavelength of light emitted by each of the plurality of sub-pixels or an interval that should be a length that is an integral multiple of the wavelength.

  According to the configuration of aspect 7 of the present invention, it is possible to increase the intensity of light emitted in a specific direction other than the direction perpendicular to the display surface of the display device.

  In the shading device for a vehicle according to aspect 8 of the present invention, in any of the above aspects 1 to 7, the light control glass plate is provided between two conductive films for transmitting light and the two conductive films. It may contain an enclosed liquid crystal molecule.

  According to the configuration of aspect 8 of the present invention, the transmittance of light in the light control glass plate can be easily switched by controlling the voltage applied to the light control glass plate.

  In the awning apparatus for a vehicle according to aspect 9 of the present invention, in the above aspect 8, at least one of the two conductive films faces the imaging device disposed inside the vehicle compartment, and the surroundings It may have an insulated part.

  According to the configuration of the ninth aspect of the present invention, even when the transmittance of the light control glass plate 2 is lowered, the scene in front of the vehicle can be imaged without any problem through the portion with high light transmittance.

  In the shading device for a vehicle according to aspect 10 of the present invention, in any of the above aspects 1 to 9, the light control glass plate is an upper portion 20 in a projected image of the window glass on a plane perpendicular to the longitudinal direction of the vehicle. It may be provided in at least a part of the area which is within%.

  According to the configuration of aspect 10 of the present invention, it may be possible to use a light control glass plate with low light transmittance.

  In the shade device for a vehicle according to aspect 11 of the present invention, in any of the above aspects 1 to 10, a driver for driving a pixel of the display device based on the display image data is disposed in the ceiling portion of the vehicle compartment A wire connecting the display device and the driver may be disposed between the display device and the ceiling.

  According to the configuration of aspect 11 of the present invention, the voltage drop in the internal wiring of the display device and the heat generation due to the conductor resistance of the internal wiring can be reduced.

  In the shading device for a vehicle according to aspect 12 of the present invention, in the aspect 11, the driver is disposed between an interior material provided in the ceiling portion and an exterior panel constituting the roof of the vehicle, A light glass plate is provided on a part or the surface of the window glass whose upper end is adhered to the surface of the end of the exterior plate facing the outside of the vehicle, and the wiring is the interior material and the exterior It may be drawn out from the space formed between the boards to the inside of the casing through the space between the bonding portion of the exterior plate to the window glass and the interior material.

  According to the configuration of aspect 12 of the present invention, the driver and the display device can be connected by a short wiring length.

  In the awning apparatus for a vehicle according to aspect 13 of the present invention, in any one of the above aspects 1 to 12, a memory circuit for storing reference data regarding appearance characteristics of a predetermined object, the data processing circuit; A comparison circuit that compares imaging data with the reference data, and a display image emphasizing circuit that processes the display image data to emphasize a display image of the predetermined object displayed on the display device over other display images And may be further included.

  According to the configuration of aspect 13 of the present invention, it is possible to enhance the visibility of an object highly required to be recognized by the driver of the vehicle or the like, and reduce the oversight by the driver or the like to such an object. .

  In the shading device for a vehicle according to aspect 14 of the present invention, in any of the above aspects 1 to 13, the data processing circuit determines a blind spot portion blocked by the light control glass plate in the field of vision of the driver of the vehicle. And a display target data selection circuit for selecting display target data corresponding to the blind spot portion of the image pickup data, and the data processing circuit causes the display device to display the sight of the blind spot portion. The display image data may be generated based on the display target data.

  According to the configuration of aspect 14 of the present invention, even when the blind spot portion by the light control glass plate in the state of low light transmittance changes with the movement of the driver of the vehicle or the like, the driver or the like has less discomfort. An image can be displayed on a display device.

  In the shading device for a vehicle according to aspect 15 of the present invention, in any of the above aspects 1 to 14, the imaging device is a lens having a surface on which a covering layer is formed to reduce reflection of light by adjusting the refractive index. May be provided.

  According to the configuration of aspect 15 of the present invention, even when imaging by the imaging device is performed under backlight, an image with less flare and ghost can be displayed on the display device.

  The shading device for a vehicle according to a sixteenth aspect of the present invention is, in any one of the first to fifteenth aspects, a second detector that detects the intensity of incident light incident on the light control glass plate, and the intensity of the incident light The control circuit may further include: a control circuit that controls the switch to lower the light transmittance of the light control glass plate when the threshold exceeds a preset threshold.

  According to the configuration of the sixteenth aspect of the present invention, when the sunlight is stronger than a predetermined reference, it is possible to reduce the operation of the driver of the vehicle and the like required to block the sunlight.

  In the awning apparatus for a vehicle according to aspect 17 of the present invention, in any of the above aspects 1 to 16, the light control glass plate is provided over the entire vehicle width direction in the windshield of the vehicle, or the front In the front part of the driver's seat and the front part of the passenger's seat on the glass, the display is provided over the entire vehicle width direction, or is provided on the front of the driver's seat In addition, a second display device is provided on the front portion of the passenger seat, and an image displayed on the front portion of the passenger seat or the second display device on the display device is a view seen from the driver of the vehicle And the image based on the view seen from the passenger sitting on the front passenger seat.

  According to the configuration of the seventeenth aspect of the present invention, it is possible to block sunlight even on the front portion of the passenger seat of the vehicle and to provide the driver with an image of a scene hidden in a light control glass plate having a low light transmittance. It is possible to make the passenger visually recognize a scene suitable for the passenger sitting in the front passenger seat.

  In the shading device for a vehicle according to aspect 18 of the present invention, in the aspect 17, the image displayed at a position farther from the driver's seat in the vehicle width direction of the vehicle is enlarged in the vehicle width direction at a larger enlargement factor. May be displayed on the display device and / or the second display device.

  According to the configuration of aspect 18 of the present invention, it is possible to display on the display device an image that is easy for a driver or the like to recognize in the vehicle width direction of the vehicle.

  In the shade device of a vehicle according to aspect 19 of the present invention, in the aspect 17 or 18, the tuning of the view seen from the driver on the front portion of the front passenger seat or the second display device in the display An image based on a blind spot portion blocked by the front portion of the passenger seat on the light glass plate may be displayed.

  According to the configuration of the nineteenth aspect of the present invention, it is possible to display an image with less discomfort for the driver or the like on the display device in front of the front passenger seat.

1, 11 Vehicle shading device 2, 12 light control glass plate 21a, 21b glass plate 22 liquid crystal sheet 22a liquid crystal molecules 22b, 22c conductive film 2a surface of light control glass plate (first surface)
2b Opposite side (second side) of light control glass plate
Reference Signs List 3 display device 30 organic EL display panel 34 organic layer 37 flexible film 39 driver 39a wiring 3a display unit 4 imaging device 4a covering layer 41 imaging region 5 data processing circuit 50 data generation circuit 51 angle identification circuit 52 data processing circuit 53 display Target data selection circuit 53a Memory circuit 54 Memory circuit 54a, 54b Reference data 6 Switch 7 Control circuit 8 First detector 8a, 8b Camera for eye detection 9 Second detector B Dead area BA Actual blind area BR Reference blind area C Car CG Front Glass DR Reference Display Target Area DA Actual Display Target Area M Driver

Claims (6)

Light transmission provided on a part of the window glass of the vehicle to separate the interior of the cabin from the exterior of the cabin, or provided on a part of the surface of the window glass of the vehicle facing the interior of the cabin A light control glass plate capable of changing the rate,
A display device formed of a translucent material and disposed on the surface of the light control glass plate facing the inside of the compartment with the display unit facing the inside of the compartment;
An imaging device for imaging an area outside the vehicle opposite to the surface on which the display device is provided in the light control glass plate to generate imaging data;
A data processing circuit that generates display image data to be displayed on the display unit based on imaging data generated by the imaging device;
A switch for switching the light transmittance of the light control glass plate;
Equipped with
The data processing circuit further includes a data processing circuit that processes the imaging data to enlarge and display an image based on the imaging data in at least one direction on the display device.
The data processing circuit according to claim 1, wherein the data processing circuit selects an enlargement factor of an image based on the imaging data based on an angle of a line of sight of a person in a vehicle compartment with respect to a display surface of the display device.   The data processing circuit selects the enlargement factor in the vertical direction so that an image based on the imaging data is enlarged and displayed in the vertical direction of the vehicle as the angle of the line of sight with respect to the display surface deviates from 90 degrees. A shading device for a vehicle according to claim 1.   The data processing circuit selects the enlargement factor in the vehicle width direction so that the image displayed at a position farther from the driver's seat in the vehicle width direction is enlarged and displayed in the vehicle width direction. The vehicle sunshade device according to 2. The vehicle further comprises a first detector for detecting the position of the driver's eye of the vehicle,
The data processing circuit further includes an angle identification circuit that identifies an angle of the line of sight of the driver directed to the display surface with respect to the display surface based on a detection result of the first detector.
The vehicle shading device according to any one of claims 1 to 3, wherein the data processing circuit selects the enlargement factor based on the angle of the line of sight identified by the angle identification circuit.   In the state where the first detector can not temporarily detect the position of the eye, the data processing circuit detects the position of the sight line identified based on the position of the eye detected immediately before falling into the state. 5. The vehicle awning system according to claim 4, wherein the magnification is selected based on an angle.   The light control glass plate according to any one of claims 1 to 5, wherein the light control glass plate is formed separately from the window glass of the vehicle so as to be provided on a part of the surface of the window glass of the vehicle facing the inside of the compartment. Sunshade device.

Images