JP6014501B2 - Head-up display device - Google Patents

Description

  The present invention relates to a head-up display device that can be mounted on a vehicle, and more particularly to a technique for suppressing unnecessary light reflection from a combiner included in an optical system.

  Vehicles such as automobiles are equipped with a meter unit (display device) incorporating various instruments in front of the driver's seat in order to provide the driver with information necessary for driving and information indicating the state of the vehicle. . With respect to such a display device, various techniques have been conventionally developed for the purpose of improving visibility.

  For example, a head-up display device (hereinafter referred to as a HUD device) that is a device for superimposing a display image including various types of information such as navigation information formed on a display surface as a virtual image and an outside scene so that a vehicle occupant visually recognizes the image. Are known). Generally, in a HUD device, an image of light to be displayed is projected from a light projection device toward the surface of a combiner (reflecting plate, half mirror). And a driver | operator visually recognizes the image reflected on the surface of the combiner.

  By the way, it is preferable that the reflection of unnecessary light is suppressed in various devices and members mounted on the vehicle. This is because when the external light such as sunlight or the light from the light source inside the vehicle (for example, a room lamp) is reflected on the surface of the device or member and enters the driver's field of view, the driver is dazzled. This is because there is a possibility that it may hinder driving and lead to a decrease in visibility. In particular, in the case of a display device, the driver may temporarily watch the display area, so that dazzling easily occurs due to reflection of unnecessary light.

  Although the target configuration is different from that of the HUD device, for example, Patent Literature 1 discloses a technique for suppressing unnecessary light reflection in a display device for a vehicle.

  In Patent Document 1, in the combination meter, a cover is arranged on the driver side of the screen, and this cover is made of smoke material having a light transmittance of about 30% and an AR layer formed by coating on the driver side surface of the smoke material. It is composed. The AR layer diffusely reflects the external light incident on the combination meter and greatly reduces the amount of reflected light toward the driver. In addition, the AR layer and the smoke material reduce the amount of extraneous light transmitted through the cover to prevent the occurrence of a washout phenomenon, and maintain good visibility of the projected image on the screen.

JP 2005-186784 A

  Also in the HUD device described above, light such as extraneous light incident on the combiner is reflected on the surface of the combiner, and the driver may be dazzled by the reflection of the unnecessary light. However, in such a HUD device, the function as the HUD device is realized by the combiner reflecting the light from the light projection device, and therefore the antireflection technology as disclosed in Patent Document 1 is used. I can't.

  In recent years, there is a demand for a HUD device that further improves the commercial value.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a head-up display device having a cover capable of improving the commercial value.

In order to achieve the above-described object, the head-up display device according to the present invention is characterized by the following points.
(1) a combiner that reflects display light including a display image in a reflection direction;
An anti-glare cover disposed on the forward side in the reflection direction with respect to the combiner so that at least a portion thereof overlaps with the combiner when viewed from the reflection direction;
A light source for cover illumination that emits illumination light;
A head-up display device comprising:
The cover is formed with an incident portion that guides the illumination light into the cover.
about.
(2) A head-up display device configured as described in (1) above,
The surface on the forward side of the cover is an irregular reflection surface, and the surface on the opposite side of the irregular reflection surface of the cover is a reflection surface.
about.
(3) A head-up display device having any one of the constitutions (1) and (2),
A reflector that reflects the illumination light and guides the illumination light to the incident portion of the cover;
about.
(4) The head-up display device having the configuration according to any one of (1) to (3) above,
On the surface on the reflection direction side of the cover, a visible display element representing predetermined information composed of at least one of a character, a figure, and a symbol is formed.
about.

According to the head-up display devices of (1) to (4) above, since the antiglare cover is provided, it is possible to prevent dazzling due to reflection of unnecessary light from the combiner. Moreover, since the illumination light from the light source for cover illumination is guide | induced through the incident part inside the said cover, a cover can also be illuminated. According to this configuration, for example, by illuminating the cover at night or by illuminating the cover at the start of use of the head-up display device, it is possible to realize an effect different from the conventional one. Thereby, the commercial value as a head-up display apparatus can be improved.
Further, according to the head-up display device of (2) above, the forward-side surface (the surface opposite to the combiner and the driver-side surface) in the reflection direction of the cover is an irregular reflection surface. Unnecessary light reflected by the combiner and incident on the cover is diffusely reflected by the irregular reflection surface and emitted as weak light. That is, since the irregular reflection surface is formed, anti-glare property is added to the cover. In addition, since the surface opposite to the irregular reflection surface of the cover is a reflection surface, the illumination light guided into the cover by the incident portion is reflected by the reflection surface and travels toward the irregular reflection surface. In addition, the light reflected toward the reflection surface by the irregular reflection surface is reflected by the reflection surface and travels to the irregular reflection again. That is, the combination of the irregular reflection surface and the reflection surface makes it possible to diffusely reflect the illumination light that has entered the cover with a relatively high accuracy. As a result, it is possible to improve the illumination efficiency of the cover while adding antiglare properties to the cover.
Moreover, according to the head-up display device of (3), the illumination efficiency of the cover can be improved because the reflector for guiding the illumination light to the incident part of the cover is provided.
In addition, according to the head-up display device of (4) above, since the visible display element is formed on the antiglare cover, not only for antiglare against reflection of unnecessary light from the combiner. The cover can also be used for information transmission to the driver, decoration, and effects. Thereby, space can be utilized effectively and the commercial value as a head-up display apparatus can be improved.

  According to the head-up display device of the present invention, it is possible to provide a head-up display device having a cover capable of improving the commercial value.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a perspective view showing the appearance of the HUD device. FIG. 2 is a longitudinal sectional view showing the entire structure of the HUD device. FIG. 3 is a perspective view showing the appearance of the interior of a vehicle equipped with a HUD device. 4 is an enlarged perspective view showing a part of the structure including the anti-glare cover of the HUD device shown in FIG. 5A and 5B are diagrams showing an antiglare cover and a cover illumination mechanism, in which FIG. 5A is a perspective view and FIG. 5B is a longitudinal sectional view. FIG. 6 is a perspective view showing the appearance of the combiner unit. 7A and 7B are views showing the state of the HUD device in the first state, in which FIG. 7A is a perspective view and FIG. 7B is a longitudinal sectional view. 8A and 8B are diagrams showing the state of the HUD device in the second state following the first state, FIG. 8A is a perspective view, and FIG. 8B is a longitudinal sectional view. FIG. 9 is a diagram illustrating the state of the HUD device in a third state following the second state, in which FIG. 9A is a perspective view and FIG. 9B is a longitudinal sectional view. 10A and 10B are views showing the state of the HUD device in the fourth state following the third state, in which FIG. 10A is a perspective view and FIG. 10B is a longitudinal sectional view. 11A and 11B are views showing the state of the HUD device in the fifth state following the fourth state, FIG. 11A is a perspective view, and FIG. 11B is a longitudinal sectional view. 12A and 12B are diagrams showing an antiglare cover and a cover illumination mechanism according to a first modification, in which FIG. 12A is a perspective view and FIG. 12B is a longitudinal sectional view. FIGS. 13A and 13B are diagrams showing an antiglare cover and a cover illumination mechanism according to a second modification. FIG. 13A is a perspective view and FIG. 13B is a longitudinal sectional view.

  Specific embodiments relating to the HUD device of the present invention will be described below with reference to the drawings.

<Outline of HUD device>
FIG. 1 shows the appearance of the HUD device 1 in this embodiment, FIG. 2 shows the overall structure of the HUD device 1 shown in FIG. 1, FIG. 3 shows the appearance of the interior of a vehicle equipped with the HUD device 1, and FIG. FIG. 4 is an enlarged view of a part of the structure including the antiglare cover 5 of the HUD device 1 shown. In FIG. 4, in order to represent the light source 21 for cover illumination, a part is broken and shown. In each figure, the front-rear direction of the vehicle is indicated by an arrow Y, the vertical direction of the vehicle is indicated by an arrow Z, and the left-right direction of the vehicle is indicated by an arrow X.

  As shown in FIG. 3, the HUD device 1 shown in FIG. 1 is embedded in the inside of the instrument panel 10 and mounted on a vehicle in a state where a part of the HUD device 1 can be exposed. The portion exposed above the instrument panel 10 includes the combiner 3 and the antiglare cover 5. The combiner 3 and the anti-glare cover 5 have a movable mechanism, which will be described later, and can be stored inside the instrument panel 10 by being immersed therein. That is, the combiner 3 and the antiglare cover 5 are located at a position where the combiner 3 and the antiglare cover 5 protrude from the instrument panel 10 (position shown in FIG. 9 described later) and a position where the combiner 3 and the antiglare cover 5 are immersed inside the instrument panel 10. (Position shown in FIG. 7 to be described later). The combiner 3 and the antiglare cover 5 can be driven independently of each other.

  Further, the anti-glare cover 5 is moved relative to the combiner 3 so as to cover the surface of the combiner 3 shown in FIG. 1 (position shown in FIGS. 7 to 9 described later) and the combiner 3 shown in FIG. It is also possible to move between the position where the surface of the surface is exposed (the position shown in FIG. When using the HUD device 1, as shown in FIG. 2, the combiner 3 protrudes above the instrument panel 10 and is exposed, and the antiglare cover 5 moves to a position below the combiner 3.

  As shown in FIG. 2, an irradiation device 2 is disposed inside the HUD device 1. The irradiation device 2 emits a light image including visible information to be displayed by the HUD device 1 as display light L1. As shown in FIG. 2, the display light L1 is reflected by the reflecting surface 30 of the combiner 3 and travels toward the eyes of the driver sitting on the driver's seat.

  In this case, since the light image visually recognized by the driver is light reflected by the reflecting surface 30, the light image is formed as a virtual image ahead of the reflecting surface 30 as viewed from the driver. Therefore, the driver can recognize the scenery outside the vehicle that can be seen through the front windshield (window glass) W and the virtual image of the HUD that can be seen through the reflecting surface 30 as images at the same distance.

  On the other hand, for example, as shown in FIG. 3, when light such as room lamps or sunlight is irradiated as unnecessary light L <b> 2 to the location of the HUD device 1, the unnecessary light L <b> 2 is reflected by the HUD device 1 and There is a risk of heading towards the eyes. In particular, when the inclination of the reflecting surface 30 changes as the combiner 3 moves for deployment / storage, there is a high probability that the reflection direction of the unnecessary light L2 temporarily coincides with the direction of the driver's eyes, The driver is easily dazzled by the unnecessary light L2.

  In the HUD device 1 according to this embodiment, the anti-glare cover 5 is disposed at a position that covers the reflection surface 30 of the combiner 3 as shown in FIG. More specifically, the antiglare cover 5 is disposed on the vehicle rear side with respect to the combiner 3 so as to overlap with the combiner 3 when viewed from the vehicle front-rear direction, which is the reflection direction of the display light in the combiner 3. . As will be described later, the anti-glare cover 5 has an anti-glare property and has a structure in which light is not easily reflected. Can be prevented.

  However, the possibility that the unnecessary light L2 is directed toward the driver's eyes is high when the combiner 3 is moved for deployment / storage. That is, when the driver uses the HUD device 1, the tilt of the combiner 3 is adjusted so that the reflected light of the display light L1 from below is directed toward the eyes of the driver. Is assumed to travel in a direction different from the direction of the driver's eyes even when reflected by the reflecting surface 30.

  For this reason, when the driver uses the HUD device 1, it is not necessary to cover the combiner 3 with the antiglare cover 5, and the antiglare cover 5 is detached from the combiner 3 and moves downward as shown in FIG. 2. To do. Thereby, the display light L1 is reflected by the reflecting surface 30 without being influenced by the anti-glare cover 5 and is directed toward the driver's eyes. Thus, in the HUD device 1, the anti-glare cover 5 overlaps with the combiner 3 when viewed from the front-rear direction of the vehicle (first position) and with the combiner 3 when viewed from the direction. The part is movable between a position different from the part (second position).

  In the present embodiment, as shown in FIG. 4, a display element 5 a is formed on the surface of the antiglare cover 5 (surface close to the driver). This surface is formed as a processed surface 5b to which antiglare property is added, and specifically, is formed as an irregular reflection surface that irregularly reflects light.

  The display element 5a represents information to be transmitted to the user (driver) as visible information, and typical visual information includes characters, figures, symbols, and combinations thereof. For example, the display element 5a can be used to express a production effect prior to the start / end of display by the HUD device 1 or to transmit notes regarding the display to the driver. That is, the antiglare cover 5 of the present embodiment has a function of transmitting visible information to the user using the display element 5a in addition to the function of preventing dazzling due to the unnecessary light L2.

<Structure of anti-glare cover and cover illumination mechanism>
The appearance of the antiglare cover 5 and the cover illumination mechanism and the structure of the longitudinal section are shown in FIG.
The antiglare cover 5 shown in FIG. 5 is formed in a thin plate shape using a material (for example, resin) that can transmit predetermined light. Further, one surface (surface on the driver side) of the anti-glare cover 5 is formed as a processed surface 5b, and the opposite surface is formed as a reflective surface 5c.

  The machining surface 5b is blasted. That is, irregular fine irregularities such as frosted glass are formed on the processed surface 5b by spraying (sand particles or the like) on the surface at high speed. Thereby, the processed surface 5b has the property of irregularly reflecting light. On the other hand, the reflecting surface 5c is formed as a flat surface and has a property of reflecting light.

The display element 5a is formed by, for example, any one of the methods (1) to (3) shown below or a combination thereof.
(1) The display element 5a is printed using a paint having a property of not transmitting light. Thereby, the user can visually recognize the display element 5a as a black pattern.
(2) The display element 5a is printed using a paint having a property of transmitting light. As a result, the user can distinguish the pattern of the display element 5a from the other region by the difference in the amount of light according to the light transmittance.
(3) The surface of the portion corresponding to the display element 5a is shaved by engraving or the like. As a result, only the portion of the display element 5a becomes a uniform reflecting surface, and the periphery thereof is a diffusely reflecting surface (processed surface 5b). As a result, the user can distinguish between the pattern of the display element 5a and the other area by the difference in the amount of light.

  When the combiner 3 moves to a position where it protrudes from the instrument panel 10, the antiglare cover 5 is in a state where the front end portion 5f is arranged upward and the rear end portion 5g is arranged downward as shown in FIG. Moving. Further, a cover illumination light source 21 that emits illumination light for illuminating the antiglare cover 5 is disposed on the driver side of the antiglare cover 5.

  On the rear end portion 5g of the anti-glare cover 5, as shown in FIG. 5B, an inclined surface 5e is formed that is inclined about 45 degrees with respect to the extending direction of the processed surface 5b and the reflecting surface 5c. An incident portion 5 d that guides the illumination light emitted from the cover illumination light source 21 to the inside of the antiglare cover 5 is formed in a portion of the processing surface 5 b that faces the inclined surface 5 e. The incident portion 5d is not blasted. The cover illumination light source 21 is disposed at a position facing the incident portion 5d.

  As shown in FIG. 5B, most of the illumination light incident on the incident portion 5d from the cover illumination light source 21 is incident on the inclined surface 5e. This light is reflected by the inclined surface 5e, and then travels toward the tip 5f while repeating reflection on the processed surface (diffuse reflection surface) 5b and reflection on the reflection surface 5c inside the antiglare cover 5.

  Moreover, the light reflected by the inclined surface 5e of the anti-glare cover 5 enters the processed surface 5b. A part of the incident light is diffusely reflected to become weak light, passes through the processed surface 5 b, and goes to the outside of the anti-glare cover 5. Then, the user visually recognizes the light emitted from the processed surface 5b. Thereby, the processing surface 5b is illuminated. The amount of this illumination light differs between the area where the display element 5a is formed and the surrounding area. For this reason, the user can recognize the display pattern of the display element 5a based on the difference in the amount of light.

  Switching on / off of the light source 21 for cover illumination can be performed in conjunction with other illumination of the vehicle, for example. Or it is good also as a structure which provides the operation switch for switching on / off, and it is good also as a structure switched based on the output from an illumination intensity sensor. Moreover, although it may light up only at night by the said structure, in order to raise the production effect at the time of starting / ending the display of the HUD apparatus 1, you may light up in the daytime. In addition, the color of the illumination light, the lighting time, the blinking cycle, and the like may be changed according to the time zone to illuminate, the type of the pressed operation switch, and the like. Moreover, when the anti-glare cover 5 moves to a position that cannot be seen by the user, it is desirable that the illumination of the light source 21 for cover illumination is turned off.

<Specific example of configuration and operation of mechanism unit>
<Description of configuration>
The appearance of the combiner unit is shown in FIG. The mechanism including the above-described combiner 3 and anti-glare cover 5 is integrated as a combiner unit as shown in FIG.

  The first to fifth states of the HUD device 1 are shown in FIGS. When the HUD device 1 expands from the storage state to transition to the use state, the state transitions from the first state toward the fifth state. 7 to 11, the display element 5a is omitted.

A detailed configuration of the mechanism unit and the like shown in each drawing will be described below.
As shown in FIG. 3, an opening 10 b for assembling the HUD device 1 is provided in the front portion of the driver's seat on the upper surface 10 a of the instrument panel 10. The HUD device 1 is attached to the inside of the instrument panel 10 so as to cover the opening 10b.

  As shown in FIG. 2, the HUD device 1 includes a support mechanism 4 that supports the combiner 3 and the antiglare cover 5 in a movable manner.

  The irradiation device 2 is a known liquid crystal projector that projects light through a liquid crystal panel. The irradiation device 2 receives display of a control signal from a predetermined control board, thereby forming display information such as characters and figures according to the control signal on a liquid crystal panel composed of a plurality of liquid crystal cells. Then, the display information is illuminated from the back by the backlight, and the display light L1 including the display image is irradiated from the display surface 20.

  The combiner 3 is a known half mirror having a plate glass and a light semi-transmissive film such as tin or silver deposited on one surface of the plate glass. The combiner 3 has light transmittance and is disposed on the vehicle front side of the irradiation device 2. The combiner 3 reflects the display light L1 emitted from the irradiation device 2 to the vehicle rear side (forward direction in the reflection direction), and transmits the light from the vehicle front side to the vehicle rear side.

  As shown in FIG. 2, the support mechanism 4 includes a case 6, a base 7, a first driving means 70 that moves the base 7, and a first slider that moves the antiglare cover 5 relative to the base 7. 2 driving means 80.

  As shown in FIG. 2, the case 6 includes a lower case 6A and an upper case 6B. The lower case 6A includes a first accommodating portion 61 that accommodates the combiner 3, the antiglare cover 5, the base 7, the first driving means 70, and the second driving means 80, and a second accommodating portion 62 that accommodates the irradiation device 2. It is equipped with.

  The first accommodating portion 61 includes a rectangular plate-like bottom wall 63 and four side walls 64 erected from the edge of the bottom wall 63, and has a first opening at a position facing the bottom wall 63. Configured. Of the four side walls 64, one side wall 64 </ b> A is formed with a rectangular cutout (not shown) in which the end on the first opening side (upper side) is cut out.

  The second accommodating portion 62 includes three peripheral walls 60 erected outward from the edge of the notch, a second side wall 64B that connects the edges of the three peripheral walls 60 and faces the notch, And has a second opening at a position continuous with the first opening. The irradiation device 2 is accommodated in the second accommodating portion 62 such that the display surface 20 faces the second through hole 65c (described later). As shown in FIG. 2, the display light L1 emitted from the display surface 20 enters the reflective surface 30 of the combiner 3 through the second through hole 65c.

  The upper case 6B includes a rectangular plate-shaped ceiling wall 65, an overlapping wall 66 that stands from the edge of the ceiling wall 65 and overlaps the side wall 64 of the lower case 6A, and a partition wall 67.

  The ceiling wall 65 is formed in a rectangular plate shape that is substantially the same as the opening 10b of the instrument panel 10, and the upper surface 65a of the ceiling wall 65 that is disposed in the opening 10b is directed upward toward the driver's seat. In this way, it is formed so as to be a surface continuous with the upper surface 10a of the instrument panel 10. The top wall 65 is provided so as to cover the openings (first opening and second opening) of the lower case 6A.

  The top wall 65 is formed with a first through hole 65b provided at a position communicating with the first opening and a second through hole 65c provided at a position communicating with the second opening. The first through hole 65b is formed in a rectangular shape whose longitudinal direction is along the short direction of the top wall 65, and the combiner 3 and the antiglare cover 5 are inserted inside. The second through-hole 65 c is formed in a trapezoidal shape whose upper side and lower side are along the short direction of the top wall 65.

  The partition wall 67 is formed in a rectangular plate shape whose short dimension is equal to the upper side dimension of the second through hole 65c on the first through hole 65b side, and one end in the longitudinal direction is formed on the upper side of the second through hole 65c. The other end in the longitudinal direction extends toward the peripheral wall 60 located on the lower side of the second housing portion 62, and partitions the first housing portion 61 and the second housing portion 62.

  As shown in FIG. 6, the base 7 includes a base body 71 and a pair of rail guides 72. The base body 71 includes a rectangular upper surface 71A, a lower surface 71B opposite to the upper surface 71A, a pair of first side surfaces 71C connected to both edges in the short direction of these surfaces 71A and 71B, and these surfaces 71A, 71B and 71C. And a pair of second side surfaces 71D connected to both edges in the longitudinal direction, and is formed in a substantially rectangular parallelepiped shape.

  On the upper surface 71A of the base body 71, a combiner holding portion 73 for holding and fixing the combiner 3 and an anti-glare cover insertion portion 74 for holding the anti-glare cover 5 are provided. The combiner holding portion 73 holds and fixes the lower end portion of the combiner 3 such that the thickness direction of the combiner 3 is along the short direction of the upper surface 71A.

  The anti-glare cover insertion part 74 is a through-hole formed so that the anti-glare cover 5 can be inserted, and is provided closer to the irradiation device 2 (rear side of the vehicle, driver side) than the combiner holding part 73. The antiglare cover 5 is inserted into the antiglare cover insertion portion 74. The anti-glare cover 5 is inserted into the second pinion 81 and the anti-glare cover by engaging a second pinion 81 (described later) with a second rack 82 (described later) formed on the anti-glare cover 5. It is sandwiched between the inner surface of the portion 74. Accordingly, the anti-glare cover 5 is held by the anti-glare cover insertion portion 74 so as to be movable in the penetration direction of the anti-glare cover insertion portion 74.

  Each of the pair of rail guides 72 is provided on the lower side (lower surface 71B) side of the first side surface 71C, as shown in FIG. Each rail guide 72 protrudes in a cylindrical shape from the outer surface of each first side surface 71 </ b> C, and has a diameter dimension substantially equal to the short dimension of the first rail 79 </ b> A (described later).

  As shown in FIG. 6, the first drive means 70 is provided between the first pinion 75, the first rack 76, the first drive gear 77, and the first pinion 75 and the first drive gear 77. An intermediate gear 78 and a pair of clamping plates 79 for holding the base 7 are provided.

  The first pinion 75 is rotatably supported on the first side surface 71 </ b> C of the base 7. The first rack 76 includes a plurality of teeth that mesh with the first pinion 75 along a direction in which a first rail 79A (described later) extends. The first rack 76 is provided only on the lower surface of the first rail 79A.

  The first drive gear 77 includes a motor (not shown) as a drive source, and a drive gear 77B fixed to the output shaft 77A of the motor.

  As shown in FIGS. 2 and 6, the pair of sandwiching plates 79 are formed in a substantially right triangular plate shape, and are erected vertically at both ends in the short direction of the bottom wall 63 of the case 6 so that the front and rear of the vehicle It arrange | positions along a direction (arrow Y direction). Each sandwiching plate 79 has one acute angle portion 79a (see FIG. 2) positioned on the second housing portion 62 side (rear side of the vehicle) of the bottom wall 63 and on the bottom wall 63 side, and a right angle portion. 79b (see FIG. 2) is arranged obliquely so that the distance from the bottom wall 63 increases as it goes toward the front side of the vehicle. The pair of clamping plates 79 are fixed to the inner surface of the side wall 64 of the case 6.

  Each of the pair of sandwiching plates 79 is provided with a first rail 79A for guiding the first pinion 75 and a second rail 79B for guiding the rail guide 72. The first rail 79A is provided along the oblique side of the sandwiching plate 79, and the second rail 79B is provided along the bottom side of the sandwiching plate 79 on the lower side than the first rail 79A. Further, one end portion (end portion on the rear side of the vehicle) of the first rail 79A is provided on the front side of the vehicle with respect to one end portion (end portion on the rear side of the vehicle) of the second rail 79B. The pair of clamping plates 79 supports the base 7 in a swingable manner by the first rail 79A guiding the first pinion 75 and the second rail 79B guiding the rail guide 72.

  The first rail 79 </ b> A is formed in a band plate shape that penetrates the holding plate 79. The first rail 79A guides the first pinion 75 in the extending direction of the first rail 79A by engaging the first pinion 75 with a first rack 76 provided on the bottom surface thereof.

  The second rail 79 </ b> B is formed in a strip shape penetrating the sandwiching plate 79 and has a curved surface that protrudes toward the bottom wall 63 of the case 6. The second rail 79B guides the rail guide 72 in the extending direction of the second rail 79B by inserting the rail guide 72 inside and supporting the rail guide 72 slidably in the second rail 79B. .

  In such a first driving means 70, a pair of first racks 76 are provided at the left and right ends of the combiner 3, and one first pinion 75 is provided for each first rack 76. One pair of first pinions 75 is rotated by this one motor. The first driving means 70 moves the first pinion 75 relative to the first rack 76 by the rotation of the first pinion 75, and the rail guide 72 moves in conjunction with the movement of the first pinion 75. By moving the first rail 79 </ b> A, the base 7 is moved in a swingable manner with respect to the sandwiching plate 79.

  As shown in FIG. 6, the second drive means 80 includes a second pinion 81 that is rotatably supported by the base body 71, a second rack 82, and a second drive gear 83. The second pinion 81 is provided on the lower side of the second side surface 71D at a position where it can mesh with the second rack 82 formed on the anti-glare cover 5.

  The second rack 82 is provided on the surface of the antiglare cover 5 opposite to the combiner 3. The second rack 82 is provided on the lower end side of the anti-glare cover 5 and has a plurality of teeth that mesh with the second pinion 81 along the insertion direction of the anti-glare cover insertion portion 74 described above. It is configured.

  The second drive gear 83 includes a motor (not shown) as a drive source and an output shaft 83A of the motor. The output shaft 83A is fixed to the second pinion 81.

  In the second driving means 80 having such a configuration, when the motor rotates and the driving force generated by the rotation of the motor is transmitted to the second pinion 81, the second pinion 81 rotates and the second pinion 81 rotates to the second pinion 81. The anti-glare cover 5 is slid with respect to the anti-glare cover insertion portion 74.

<Description of operation>
Next, an operation example of the mechanism unit of the HUD device 1 configured as described above will be described below.

  When the combiner 3 is at the standby position, the first state shown in FIG. At this time, the first pinion 75 is positioned at one end portion of the first rail 79A, the rail guide 72 is positioned at one end portion of the second rail 79B, and the combiner 3 and the anti-glare cover 5 are in a state where they lie down. It is stored inside the case 6. Further, the second pinion 81 is engaged with the second rack 82 positioned at the lower end of the second rack 82, and the anti-glare cover 5 is positioned at a covering position that covers the entire reflecting surface 30 of the combiner 3.

  Here, the covering position means that the anti-glare cover 5 is a part on the reflecting surface 30 and is positioned at a position that covers a portion that reflects external light or unnecessary light L2 from the room toward the driver. Say. The anti-glare cover 5 only needs to cover at least a part of the reflecting surface 30, and may not cover the entire surface.

  By starting driving the motor of the first drive gear 77, the antiglare cover 5 is in the second state shown in FIG. That is, the first pinion 75 rotates, the first pinion 75 is moved from one end of the first rail 79A to the other end, and the rail guide 72 is moved from one end of the second rail 79B to the other end. As a result, the combiner 3 protrudes from the opening of the case 6 while being tilted upward with respect to the upper surface 65 a of the top wall 65.

  Furthermore, as the first pinion 75 rotates, the state transits to the third state shown in FIG. Since the first pinion 75 is positioned at the other end of the first rail 79A and the first pinion 75 is positioned at the other end of the first rail 79A, the combiner 3 rotates while the angle of the reflecting surface 30 changes. It is displaced dynamically and is positioned at a deployment position that stands up with respect to the upper surface 65a of the top wall 65. In this third state, the drive of the motor of the first drive gear 77 is stopped.

  Thus, during the movement in which the combiner 3 moves from the standby position to the unfolded position, the antiglare cover 5 remains in the state of being positioned at the covering position. That is, the anti-glare cover 5 is always positioned at the covering position, and covers a portion that reflects the unnecessary light L2 from the outside toward the driver. Therefore, it is possible to reliably prevent the unnecessary light L2 from being reflected by the reflecting surface 30, and to reliably prevent the driver from feeling dazzling.

  Next, the driving of the motor of the second drive gear 83 is started, thereby transitioning to the fourth state shown in FIG. At this time, the second pinion 81 rotates and the second pinion 81 is moved from the lower end portion of the second rail 79 </ b> B to the upper end side, so that the antiglare cover 5 slides downward with respect to the combiner 3.

  As the second pinion 81 rotates, the fourth state further changes to the fifth state as shown in FIG. By positioning the second pinion 81 at the upper end of the second rack 82, the anti-glare cover 5 slides downward with respect to the combiner 3, and is positioned at an exposed position where the entire reflecting surface 30 of the combiner 3 is exposed. .

  Here, the exposure position means that the anti-glare cover 5 is positioned at a position where the reflection position on the reflection surface 30 is projected. That is, the entire reflecting surface 30 may not be exposed. What is necessary is just to move to the position where the part which reflects the display light L1 among the reflective surfaces 30 of the glare-proof cover 5 is exposed.

  In this state, the HUD device 1 is used. At this time, since the antiglare cover 5 is positioned at the exposed position, the display light L1 is reflected by the combiner 3 toward the driver.

  Next, the operation when the combiner 3 moves from the deployed position to the storage position will be described. By rotating the output shafts 77A and 83A in the direction opposite to the driving direction when the combiner 3 moves from the storage position to the deployment position, the combiner 3 moves from the storage position of the combiner 3 to the deployment position. That is, the state transitions from the fifth state toward the first state.

  Also in this case, during the movement of the combiner 3 from the unfolded position to the standby position, the antiglare cover 5 is always positioned at the covering position to keep the antiglare cover 5 positioned at the covering position. A portion that reflects the light L2 toward the driver is covered. Therefore, it is possible to reliably prevent the unnecessary light L2 from being reflected by the reflecting surface 30, and thus it is possible to reliably prevent the driver from feeling dazzling.

  As described above, in the HUD device 1, the antiglare cover 5 protrudes from the case 6 and partially overlaps the combiner 3 when viewed from the front-rear direction of the vehicle (first position, for example, the position shown in FIG. 10. .) And a portion that is immersed in the case 6 and overlaps with the combiner 3 when viewed from the front-rear direction of the vehicle moves between a position different from the part (second position, for example, the position shown in FIG. 11). Is possible. Further, the combiner 3 has a position protruding from the case 6 (third position, for example, the position shown in FIGS. 9 to 11) and a position immersing in the case 6 (fourth position, for example, FIGS. 7 and 8). It moves while changing its inclination. And in the time slot | zone when the combiner 3 is moving between the position which protrudes from the case 6, and the position where it immerses, the anti-glare cover 5 is arrange | positioned so that it may overlap with the combiner 3 when it sees from a vehicle front-back direction. The

<Modification>
A first modification and a second modification of the HUD device 1 will be described with reference to FIGS.
FIGS. 12A and 12B are views showing the antiglare cover 5 and the cover illumination mechanism according to the first modification. FIG. 12A is a perspective view and FIG. 12B is a longitudinal sectional view. In the first modification, a reflector 22 is arranged around the light source 21 for cover illumination. The reflector 22 is disposed so as to surround the periphery of the cover illumination light source 21 excluding a portion facing the incident portion 5d. The reflector 22 has a function of reflecting the light emitted from the cover illumination light source 21 and guiding it to the incident portion 5d. The reflector 22 may be fixed to the case 6 or may be configured to be fixed to the antiglare cover 5. If it is set as the structure fixed with respect to the glare-proof cover 5, the glare-proof cover 5 can be illuminated. Since other configurations are the same as the configurations according to the above-described embodiment, the same members are denoted by the same reference numerals and description thereof is omitted.

  FIGS. 13A and 13B are diagrams showing an antiglare cover and a cover illumination mechanism according to a second modification. FIG. 13A is a perspective view and FIG. 13B is a longitudinal sectional view. In the second modified example, the rear end portion 5g is formed as a surface substantially perpendicular to the extending direction of the processed surface 5b and the reflecting surface 5c. The rear end portion 5g is not blasted and functions as an incident portion 5d for receiving display light. And as shown in FIG. 13, the light source 21 for cover illumination and the reflector 22 are arrange | positioned so that display light may be radiate | emitted upwards in the position facing the rear-end part 5g. Since other configurations are the same as the configurations according to the above-described embodiment, the same members are denoted by the same reference numerals and description thereof is omitted.

  Below, the effect | action and effect of the HUD apparatus 1 which concern on embodiment are demonstrated.

The HUD device 1 according to the present embodiment includes a combiner 3 that reflects display light including a display image in a reflection direction (vehicle front-rear direction), and a combiner 3 that overlaps with the combiner 3 when viewed from the reflection direction. 3, an anti-glare cover 5 having anti-glare properties and a light source 21 for cover illumination that emits illumination light is disposed on the forward direction side (vehicle rear side) in the reflection direction. Further, the anti-glare cover 5 is formed with an incident portion 5 d that guides the illumination light into the anti-glare cover 5.
According to the HUD device 1, since the antiglare cover 5 having antiglare properties is provided, dazzling due to reflection of unnecessary light from the combiner 3 can be prevented. Moreover, since the illumination light from the light source 21 for cover illumination is guide | induced through the incident part 5d inside the glare-proof cover 5, the glare-proof cover 5 can also be illuminated. According to this configuration, for example, by illuminating the anti-glare cover 5 at night or by illuminating the anti-glare cover 5 at the start of use of the HUD device 1, it is possible to realize an effect different from the conventional one. Thereby, the commercial value as a HUD device can be improved.

In the HUD device 1 according to the present embodiment, the surface on the vehicle rear side of the antiglare cover 5 is a processed surface (diffuse reflection surface) 5b, and the surface opposite to the processed surface 5b of the antiglare cover 5 is a reflective surface. 5c.
Thus, since the surface on the vehicle rear side of the anti-glare cover 5 is the processed surface 5b, the unnecessary light L2 reflected by the combiner 3 and incident on the anti-glare cover 5 is diffusely reflected by the processed surface 5b and weak light. Then exit. That is, antiglare property is added to the antiglare cover 5 by forming the processed surface 5b. Since the surface opposite to the processed surface 5b of the antiglare cover 5 is the reflective surface 5c, the illumination light guided into the antiglare cover 5 by the incident portion 5d is reflected by the reflective surface 5c and processed. Head for 5b. Moreover, the light reflected toward the reflecting surface 5c by the processing surface 5b is reflected by the reflecting surface 5c and travels again to the processing surface 5b. In other words, the combination of the processed surface 5b and the reflective surface 5c allows the illumination light that has entered the antiglare cover 5 to be diffusely reflected on the processed surface 5b with a relatively high accuracy. As a result, it is possible to improve the illumination efficiency of the antiglare cover 5 while adding antiglare properties to the antiglare cover 5.

The HUD device 1 according to the modification further includes a reflector 22 that reflects the illumination light and guides the illumination light to the incident portion 5 d of the antiglare cover 5.
Thus, since the reflector 22 which guides illumination light to the incident part 5d of the anti-glare cover 5 is provided, the illumination efficiency of the anti-glare cover 5 can be improved.

Further, in the HUD device 1 according to the present embodiment, the anti-glare cover 5 is formed with a visible display element 5a that represents predetermined information composed of at least one of characters, figures, and symbols.
Thus, since the display element 5a which can be visually recognized is formed in the anti-glare cover 5 having anti-glare properties, not only for anti-glare against reflection of unnecessary light from the combiner 3, but also for information to the driver. The anti-glare cover 5 can also be used for transmission, decoration, or effect. Thereby, space can be used effectively and the commercial value as a HUD device can be improved.

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

  For example, in the above-described embodiment, the combiner 3 and the antiglare cover 5 are arranged so that their main surfaces are perpendicular to the front-rear direction of the vehicle. However, the display light L1 reflected by the combiner 3 is not limited to this, and any configuration may be used as long as the display light L1 is directed toward the user's viewpoint.

  Various modifications can be made to the moving mechanism and support mechanism for deploying / storing the combiner 3. For example, at least one of the combiner 3 and the anti-glare cover 5 may be supported and guided so as to move linearly only in the vertical direction (arrow Z direction) of the vehicle with respect to the case 6, or may be freely rotatable. You may support so that it may become.

  In the above-described embodiment, the anti-glare cover 5 is automatically deployed / stored as the combiner 3 moves. However, the anti-glare cover 5 is fixed and disposed at a predetermined position. It does not matter. Alternatively, the anti-glare cover 5 may be configured to be able to be manually operated by the user.

  Moreover, about the movement with respect to the combiner 3 of the glare-proof cover 5, not only the sliding operation | movement to the direction parallel to the reflective surface 30 of the combiner 3, but the movement to various directions is possible. For example, the structure which moves between the position which covers the surface of the combiner 3, and the position which exposes the surface of the combiner 3 by rotating the glare-proof cover 5 centering on the end may be sufficient. In the above-described embodiment, the antiglare cover 5 is configured to move in the vertical direction, but may be configured to move in the horizontal direction.

  Moreover, about the method of adding anti-glare property to the anti-glare cover 5, although it was set as the structure which uses the light diffusion effect | action in the embodiment mentioned above, it is good also as a structure which uses the light absorption effect | action. That is, the structure which can absorb the unnecessary light L2 may be added to at least one surface before and after the anti-glare cover 5.

  Moreover, about the operation | movement which the glare-proof cover 5 covers the surface of the combiner 3, it is also considered that it restrict | limits only to either one at the time of the expansion | deployment of the combiner 3, and storage. It is also conceivable to limit the state in which the antiglare cover 5 covers the surface of the combiner 3 to only a part of the time zone during which the combiner 3 is moving. Furthermore, regarding the operation of unfolding / storing the combiner 3 and the antiglare cover 5, both may be moved simultaneously, or one unfolding / storing operation may be started first.

  Moreover, according to the HUD apparatus 1 which concerns on embodiment, there can exist the following effects and effects further.

  In the HUD device 1 according to the present embodiment, the antiglare cover 5 is viewed from the first position (for example, the position shown in FIG. 10) that overlaps with the combiner 3 when viewed from the reflection direction and from the reflection direction. In this case, the portion overlapping the combiner 3 is movable between a second position (for example, the position shown in FIG. 11) different from the part. Further, when the anti-glare of the combiner 3 is necessary, the combiner 3 is covered with the anti-glare cover 5, and when the anti-glare is unnecessary, the anti-glare cover 5 is moved so that the combiner 3 and the anti-glare cover 5 overlap each other. Since it becomes narrow, convenience is improved.

  The HUD device 1 according to the present embodiment further includes a case 6. Further, at least a part of the combiner 3 is disposed so as to protrude from the case 6. The antiglare cover 5 protrudes from the case 6 at the first position, and is immersed in the case 6 at a second position different from the first position. Further, when the anti-glare portion of the combiner 3 protruding from the case 6 is necessary, the anti-glare cover 5 disposed at the position protruding from the case 6 covers the protruded portion of the combiner 3 and anti-glare is unnecessary. Since the anti-glare cover 5 moves and is immersed in the case 6, convenience is improved.

Further, in the HUD device 1 according to the present embodiment, the combiner 3 has a third position (for example, the position shown in FIGS. 9 to 11) protruding from the case 6 and a fourth position (for example, FIG. 7) to be immersed in the case 6. And the position shown in FIG. 8), and the antiglare cover 5 is at least at a point in time when the combiner 3 is moving between the third position and the fourth position. However, it arrange | positions so that at least one part may overlap with the combiner 3 when it sees from a reflection direction.
Thereby, since the combiner 3 can be stored in the inside of the case 6 when the combiner 3 is not used, an open feeling can be given to the driver. Further, when the combiner 3 is moving, the anti-glare cover 5 can prevent unnecessary light from being reflected on the surface of the combiner 3 toward the viewpoint of the driver.

Further, in the HUD device 1 according to the present embodiment, the inclination of the combiner 3 changes with the movement between the third position and the fourth position.
Thereby, since the inclination can be changed when moving the combiner 3, even if it is a housing | casing (case 6) with comparatively small thickness, the combiner 3 can be accommodated in an inside. Moreover, since the inclination of the combiner 3 is changed, there is a high possibility that unnecessary light is reflected and directed toward the driver's viewpoint when the change is made. However, since the antiglare cover 5 is provided, unnecessary light is used. Can be prevented.

DESCRIPTION OF SYMBOLS 1 Head-up display apparatus 2 Irradiation apparatus 3 Combiner 4 Support mechanism 5 Anti-glare cover 5a Display element 5b Processing surface (diffuse reflection surface)
5c Reflective surface 5d Incident part 5e Inclined surface 5f Front end part 5g Rear end part 6 Case (case)
6A Lower case 6B Upper case 7 Base 10 Instrument panel 21 Light source for cover illumination 22 Reflector 30 Reflecting surface L1 Display light L2 Unnecessary light

Claims (4)

A combiner that reflects display light including a display image in a reflection direction;
An anti-glare cover disposed on the forward side in the reflection direction with respect to the combiner so that at least a portion thereof overlaps with the combiner when viewed from the reflection direction;
A light source for cover illumination that emits illumination light;
A head-up display device comprising:
The cover is formed with an incident portion that guides the illumination light into the cover.
A head-up display device. The surface on the forward side of the cover is an irregular reflection surface, and the surface on the opposite side of the irregular reflection surface of the cover is a reflection surface.
The head-up display device according to claim 1. A reflector that reflects the illumination light and guides the illumination light to the incident portion of the cover;
The head-up display device according to claim 1, wherein the head-up display device is a head-up display device. On the surface on the reflection direction side of the cover, a visible display element representing predetermined information composed of at least one of a character, a figure, and a symbol is formed.
The head-up display device according to claim 1, wherein the head-up display device is a head-up display device.

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