Head-up display device for vehicle

Abstract

To enhance the designability of a head-up display device for a vehicle.SOLUTION: A head-up display device 1 includes: an image display unit 2; a reflecting plate 3 for reflecting an image in the display unit 2 toward an eye point EP in a cabin VR; and a support part 4 for supporting the reflecting plate 3 on a vehicle V. The reflecting plate 3 is arranged on an instrument panel 7 of the vehicle V via a clearance S. The support part 4 is provided at a rear face part 32 of the reflecting plate 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vehicle head-up display device.

Background Art

[0002] A vehicle head-up display device includes a display for displaying an image and a reflector for reflecting the image of the display (see, for example, Patent Document 1). The display is provided, for example, inside an instrument panel of a vehicle cabin. The reflector disposed in the vehicle cabin reflects the image of the display toward the driver, so that the driver can visually recognize a virtual image.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a vehicle head-up display device, it is required not only to simply display an image but also to enhance the design and give the driver a sense of novelty and interest.

Means for Solving the Problems

[0005] The vehicle head-up display device according to the present invention includes a display for an image, a reflector for reflecting the image of the display toward an eye point of a driver of the vehicle, and a support portion for supporting the reflector on the vehicle, where the reflector is disposed on an instrument panel of the vehicle with a gap therebetween, and the support portion is provided on a back surface portion of the reflector.

Effects of the Invention

[0006] According to the present invention, the design of a vehicle head-up display device can be improved. [Brief explanation of the drawing]

[0007] [Figure 1] This diagram shows the configuration of a head-up display device according to an embodiment. [Figure 2] This diagram shows the reflector as seen from the driver's perspective. [Figure 3] This is a view of the reflector from above. [Figure 4] This is a cross-sectional view AA in Figure 3. [Figure 5] This is a view of the reflector from the rear of the vehicle. [Figure 6] This is an enlarged view of region A in Figure 5. [Figure 7] This diagram shows the configuration of a head-up display device according to Modification 1. [Figure 8] This is a view of the reflector from above. [Figure 9] This is a view of the reflector from the rear of the vehicle. [Figure 10] This diagram shows the configuration of a head-up display device according to modified example 2. [Figure 11] This is a view of the reflector from above. [Modes for carrying out the invention]

[0008] Hereinafter, a head-up display device (vehicle head-up display device) according to an embodiment of the present invention will be described with reference to the drawings. Figure 1 shows the configuration of the head-up display device 1. Figure 2 shows the reflector 3 as seen from the driver's perspective. Figure 3 is a view of the reflector 3 from above. In Figure 3, hatching has been added to the recessed area of ​​the instrument panel 7 for clarity. Figure 4 is a sectional view taken along the line A-A of Figure 3. In Figure 4, the shaft 41 is not shown. Figure 5 is a view of the reflector 3 as seen from the rear side of the vehicle. In Figure 5, the support portion 4 provided on the back surface portion 32 of the reflector 3 is shown by a hidden line, and the side wall portions 75 and 76 are hatched. Figure 6 is an enlarged view of the area A in Figure 5. Note that all the figures described in the embodiments are schematic diagrams, and the main parts are exaggerated for illustration, so they do not represent actual dimensions.

[0009] As shown in Figure 1, the head-up display device 1 is installed in the passenger compartment VR of a vehicle V such as an automobile. In the drawings, the direction based on the installation state of the head-up display device 1 in the passenger compartment VR is shown. In the following description, "up" and "down" mean "up" and "down" in the vertical direction. "Front" and "rear" mean "front side of the vehicle" and "rear side of the vehicle" in the vehicle front-rear direction. Also, the direction orthogonal to the vehicle front-rear direction and the vertical direction is referred to as the vehicle width direction (see Figure 3), and "width" means the length in the vehicle width direction.

[0010] As shown in Figure 1, an instrument panel 7 is provided in the passenger compartment VR. The instrument panel 7 is a cover member disposed between the front windshield 9 of the vehicle V and the driver's seat (not shown) in the vehicle front-rear direction. The instrument panel 7 is often made of a color such as black, which gives a calm impression. A strip portion 91 coated with a black ceramic paint in a strip shape is formed at the lower end portion of the front windshield 9. The strip portion 91 extends above the upper surface 71 of the instrument panel 7. As shown in Figure 2, the upper end of the strip portion 91 is visible to the driver.

[0011] As shown in FIG. 2, on the instrument panel 7, a meter M for displaying information necessary for driving such as the traveling speed of the vehicle V is installed. During driving, the driver mainly looks ahead. Generally, the meter M is installed below the driver's line of sight during driving. Therefore, in order for the driver to check the information displayed on the meter M, it is necessary to significantly lower the line of sight.

[0012] The head-up display device 1 is a driving support device for enabling the driver to visually recognize information necessary for driving without significantly lowering the line of sight. The head-up display device 1 can display, for example, information regarding the state of the vehicle V such as the traveling speed and the remaining gasoline amount, and an image IM including alarms for pedestrian emergence, vehicle interruption, lane departure, etc.

[0013] As shown in FIG. 1, the head-up display device 1 includes a display 2 for displaying an image, a reflector 3 for reflecting the image of the display 2 toward the driver's eye point EP, and a support portion 4 for supporting the reflector 3 on the vehicle V. As a head-up display device 1, there is also one that reflects the image of the display 2 on the front windshield 9, but in this embodiment, a reflector 3 separate from the front windshield 9 is provided.

[0014] As shown in FIG. 1, the head-up display device 1 is provided on the instrument panel 7 of the passenger compartment VR. The display 2 is arranged in a housing portion 72 provided inside the instrument panel 7. The display 2 is connected to a display control device CU and displays an image input from the display control device CU. Note that the image of the display 2 is reflected by the reflector 3 and is inverted to reach the driver's eye point EP. Therefore, the display control device CU outputs a pre-inverted image to the display 2.

[0015] The reflector 3 is located on the optical path OP of the image displayed by the display 2 and at a position visible to the driver. As shown in Figures 1 and 2, the reflector 3 is positioned on the instrument panel 7 with a gap S between them, and appears to the driver as if it is floating above the instrument panel 7. Specifically, the reflector 3 is positioned in a recess 73 formed on the upper surface 71 of the instrument panel 7, with a gap S between them. The recess 73 is formed by cutting a section downward from the upper surface 71 of the instrument panel 7. As shown in Figure 3, the recess 73 has a bottom wall portion 74 extending along the vehicle width direction, and side wall portions 75, 76 (a pair of side wall portions) and a front wall portion 77 that extend upward from the bottom wall portion 74 and connect to the upper surface 71 of the instrument panel 7. In Figure 3, hatching is applied to the bottom wall portion 74 and the side wall portions 75, 76 for clarity.

[0016] As shown in Figure 3, the bottom wall 74 is trapezoidal in shape, narrowing in width towards the front of the vehicle when viewed from above. The side walls 75 and 76 connect to one end and the other end of the bottom wall 74 in the vehicle width direction, i.e., to the slanted edges of the trapezoidal bottom wall 74. The side walls 75 and 76 face each other with a gap D in the vehicle width direction. Here, since the side walls 75 and 76 are connected to the slanted edges of the bottom wall 74, the gap D narrows towards the front of the vehicle.

[0017] As shown in Figure 4, the side walls 75 and 76 are inclined walls that are tilted with respect to the vertical. The side walls 75 and 76 are tilted in a direction that moves them away from each other as you move from the bottom to the top. As shown in Figure 1, the front wall portion 77 connects to the front side of the bottom wall portion 74. The front wall portion 77 extends along the vertical direction. The bottom wall portion 74 is not connected to the rear side of the vehicle. The recess 73 opens toward the rear side of the vehicle, that is, toward the driver's side.

[0018] As shown in Figure 3, the reflector 3 is positioned on the front side of the recess 73, opposite the front wall portion 77 with a gap between them. The reflector 3 is separated from the front windshield 9 by the front wall portion 77. An opening 78 is formed in the bottom wall portion 74, at a position rearward from the reflector 3. As shown in Figure 1, the opening 78 is connected to the housing portion 72 of the display unit 2. The opening 78 is located between the display unit 2 and the reflector 3 in the vehicle's longitudinal direction and is formed on the optical path OP of the display unit 2's image. As a result, the light from the display unit 2's image, which is located inside the instrument panel 7, reaches the reflector 3 through the opening 78.

[0019] The reflector 3 can be made of, for example, an opaque thin plate material. The reflector 3 can be the same color as the instrument panel 7, for example, black, so that it blends in with the instrument panel 7. As shown in Figure 5, the reflector 3 has a trapezoidal shape that widens from the bottom to the top when viewed from the rear of the vehicle. In other words, the reflector 3 has a shape that follows the slope of the side walls 75 and 76 of the recess 73.

[0020] As shown in Figure 1, the reflector 3 has a front portion 31 and a rear portion 32. The front section 31 is located on the rear side of the vehicle, i.e., the driver's side, and is a reflective surface that reflects the image of the display unit 2 toward the driver's eye point EP. The rear portion 32 is the surface located on the opposite side of the front portion 31 in the front-rear direction of the vehicle, on the side of the front windshield 9. The rear portion 32 is provided with a support portion 4 for supporting the reflector 3 on the vehicle V.

[0021] As shown in Figure 4, the reflector 3 has a bottom surface 33, side surfaces 34 and 35 (a pair of side surfaces), and a top surface 36, which serve as surfaces connecting the front surface 31 and the rear surface 32. The bottom surface 33 is a surface that extends along the vehicle width direction, that is, along the bottom wall 74 of the recess 73, and faces the bottom wall 74 with a gap S1 between them.

[0022] The side portions 34 and 35 connect to one end and the other end of the bottom portion 33 in the width direction, and extend upward from the bottom portion 33 to connect to the top portion 36. The side portions 34 and 35 are each inclined with respect to the vertical direction. The side portions 34 and 35 are inclined in a direction away from each other as they move from the bottom to the top. The inclination angle β of the side portions 34 and 35 with respect to the bottom portion 33 can be approximately the same as the inclination angle α of the side wall portions 75 and 76 with respect to the bottom wall portion 74. That is, the side portions 34 and 35 are inclined along the side wall portions 75 and 76 of the recess 73, respectively, and face the side wall portions 75 and 76 via a gap S2. The gap S2 connects with gap S1 at the bottom, forming a single U-shaped gap S (see Figure 2) as a whole.

[0023] When the reflector 3 is placed on the plane of the instrument panel 7, the gap between the reflector 3 and the instrument panel 7 is linear. However, in this embodiment, by placing the reflector 3 in the recess 73, a U-shaped gap S is formed between the reflector 3 and the recess 73. This makes the gap S more prominent and enhances the feeling that the reflector 3 is floating away from the instrument panel 7.

[0024] As shown in Figure 4, the upper surface 36 is a surface that extends along the vehicle width direction and is connected to the side surfaces 34 and 35 at one end and the other end in the vehicle width direction. The corners 37 where the side surfaces 34 and 35 connect to the upper surface 36 are chamfered. The upper surface 36 and a portion of the corners 37 are located above the upper surface 71 of the instrument panel 7 when viewed from the rear of the vehicle. In other words, the reflector 3 is mostly located within a recess 73 formed on the upper surface 71 of the instrument panel 7, but a portion of it protrudes upward from the recess 73.

[0025] Specifically, Figure 4 shows a line segment L along the upper surface 71 of the instrument panel 7. The reflector 3 has a first region 3A located below the line segment L and a second region 3B located above the line segment L. As seen from the driver's perspective, the first region 3A is located within the recess 73, and the second region 3B protrudes above the recess 73. As mentioned above, the reflector 3 is trapezoidal. Therefore, the second region 3B protruding from the recess 73 has a wider portion than the first region 3A. In this way, the wider portion of the second region 3B protruding from the recess 73 makes the second region 3B more visible to the driver, and enhances the overall floating appearance of the reflector 3.

[0026] Furthermore, as shown in Figure 2, the second region 3B protruding from the recess 73 of the reflector 3 overlaps with the strip-shaped portion 91 of the front windshield 9 when viewed from the driver's perspective. As mentioned above, the strip-shaped portion 91 of the front windshield 9 is black, making it a prominent feature within the front windshield 9. The reflector 3 protrudes from the recess 73 so as to overlap with this strip-shaped portion 91, emphasizing the floating appearance of the reflector 3.

[0027] As shown in Figure 1, the support portion 4 includes a shaft 41 and a connector 42 that connects the shaft 41 to the reflector 3. The connector 42 and the shaft 41 can be made black, for example, to match the instrument panel 7 and the reflector 3. The connector 42 is fixed to the rear portion 32 of the reflector 3 and protrudes from the rear portion 32 toward the rear of the vehicle. In the vertical direction, the connector 42 is located below the upper surface of the instrument panel 7. That is, the connector 42 is attached to the first region 3A (see Figure 4) located within the recess 73 of the reflector 3. As shown in Figure 5, the width of the connector 42 is shorter than the width of the reflector 3. Therefore, when viewed from the rear of the vehicle, the entire connector 42 overlaps the reflector 3.

[0028] The shaft 41 is mounted by inserting the connector 42 through it in the vehicle width direction. The shaft 41, connector 42, and reflector 3 are connected so as not to rotate relative to each other. That is, the reflector 3 is supported by the shaft 41 via the connector 42.

[0029] As shown in Figure 3, the shaft 41 is located further forward than the reflector 3. As shown in Figures 5 and 6, most of the shaft 41 overlaps with the reflector 3 when viewed from the rear of the vehicle, but the ends 41a on one and the other sides in the vehicle width direction do not overlap with the reflector 3 and are offset.

[0030] Holes 80 are formed in the side walls 75 and 76 of the recess 73 to support the shaft 41. The end 41a of the shaft 41 is inserted into the hole 80. A bearing (not shown) is provided inside the hole 80, and the shaft 41 is supported by the bearing so that it can rotate around the rotation axis X (see Figure 3). Furthermore, the rotation of the reflector 3 can be restricted to an appropriate position corresponding to the driver's eye point EP by a clutch / brake mechanism (not shown).

[0031] If the support part 4 that supports the reflector 3 on the vehicle is conspicuous to the driver, it may hinder the feeling of the reflector 3 floating. In this embodiment, the connector 42 is positioned on the rear side 32 of the reflector 3, in a location that does not protrude from the recess 73, and when viewed from the rear of the vehicle, the entire connector overlaps the reflector 3. The shaft 41 attached to the connector also largely overlaps the reflector 3 when viewed from the rear of the vehicle. Therefore, when viewed from the driver, the connector 42 and shaft 41 are obscured by the reflector 3 and become inconspicuous. Furthermore, by making the connector 42 and shaft 41 the same color as the reflector 3 and instrument panel 7, they can be made even less conspicuous.

[0032] Here, as shown in Figures 5 and 6, the end 41a of the shaft 41 is offset from the reflector 3 when viewed from the rear of the vehicle and overlaps the gap S2 between the side walls 75, 76 and the side surfaces 34, 35. Therefore, the end 41a of the shaft 41 may be visible to the driver. However, in this embodiment, the distance D between the side walls 75 and 76 narrows toward the front of the vehicle. Therefore, when viewed from the rear of the vehicle, the portion of the side walls 75 and 76 located in front of the shaft 41 overlaps with the end 41a of the shaft 41. In other words, when viewed from the driver, the end 41a of the shaft 41 overlaps with the rear side wall 75. If the shaft 41 is the same color as the side walls 75 and 76, the end 41a will be embedded in the side walls 75 and 76 and will be less noticeable to the driver.

[0033] Furthermore, in this embodiment, the reflector 3 and the front windshield 9 are separated by the front wall portion 77. As a result, the support portion 4 provided on the back portion 32 of the reflector 3 is less likely to be reflected in the front windshield 9 and visible to the driver. Thus, the configuration of this embodiment makes the support portion 4 less conspicuous, thereby reducing the obstruction of the floating effect of the reflector 3.

[0034] As shown in Figure 3, the shaft 41 is connected to a rotational drive mechanism RM (angle adjustment mechanism) that rotates the shaft 41 around the rotation axis X. The rotational drive mechanism RM is, for example, located inside the instrument panel 7. The rotational drive mechanism RM is composed of, for example, a motor and can be driven by the user operating a switch or remote control located inside the vehicle interior VR. By driving the rotational drive mechanism RM, the shaft 41, connector 42, and reflector 3 rotate around the rotation axis X. This allows the angle of the reflector 3 to be adjusted.

[0035] As described above, the reflector 3 is positioned so that the reflected image is directed towards the driver's eye point EP, but the driver's eye point EP changes depending on the driver's physique, posture, etc. If the optical path OP of the image reflected by the reflector 3 and the driver's eye point EP are significantly misaligned, the reflected image may become difficult to see. In this embodiment, by providing a rotational drive mechanism RM on the shaft 41, the angle of the reflector 3 can be adjusted to match the driver's eye point EP.

[0036] As described above, the head-up display device 1 (vehicle head-up display device) of the embodiment has the following configuration. (1) The head-up display device 1 is Image display unit 2, A reflector 3 reflects the image from display unit 2 toward eye point EP inside the vehicle cabin VR, It has a support part 4 that supports the reflector 3 on the vehicle V. The reflector 3 is positioned on the instrument panel 7 of the vehicle V with a gap S (S1, S2) in between. The support portion 4 is provided on the back portion 32 of the reflector plate 3.

[0037] This configuration enhances the design aesthetics of the head-up display device 1. Specifically, the reflector 3 is positioned on the instrument panel 7 with a gap S between them, so that to the driver, the reflector 3 appears to be floating above the instrument panel 7. In this way, the head-up display device 1 is not simply a device that displays images, but rather a design that gives a sense of floating, allowing the driver to experience novelty and interest.

[0038] (2) A recess 73 is provided in the instrument panel 7 of the vehicle V. The reflector 3 is positioned opposite the bottom wall portion 74 and the side wall portions 75 and 76, which form the recess 73, with gaps S1 and S2 between them.

[0039] By positioning the reflector 3 in the recess 73, which is the space surrounded by the bottom wall portion 74 and the side wall portions 75 and 76, the presence of the gaps S1 and S2 between the recess 73 and the reflector 3 becomes more prominent, allowing the driver to feel a stronger sense of the reflector 3 floating.

[0040] (3) The reflector 3 has a first region 3A located within the recess 73 and a second region 3B protruding upward from the recess 73.

[0041] The upper second region 3B of the reflector 3 protrudes from the recess 73, which allows the driver to feel a stronger sense of the reflector 3 floating.

[0042] (4) The second region 3B of the reflector 3 has a wider portion (a longer portion in the vehicle width direction) than the first region 3A.

[0043] If the reflector 3 is, for example, a trapezoidal shape that widens from the bottom to the top in the vertical direction, then the second region 3B will have a wider portion than the first region 3A. As a result, the second region 3B protruding from the recess 73 will be more visible to the driver, thereby enhancing the floating appearance of the reflector 3. In this embodiment, an example in which the reflector 3 is trapezoidal has been described, but the invention is not limited to this example. For example, the first region 3A of the reflector 3 may be formed as a rectangle of equal width, and the second region 3B may be formed as a rectangle wider than the first region 3A.

[0044] (5) The recess 73 of the instrument panel 7 comprises a bottom wall portion 74 and side wall portions 75, 76 (a pair of side wall portions) connected to the bottom wall portion 74 and inclined in a direction away from each other from the bottom to the top. The reflector 3 is inclined along the side walls 75, 76 and has a pair of side portions 34, 35 that face the side walls 75, 76 with a gap S2 between them.

[0045] In this way, by making the reflector 3 a trapezoidal shape that widens smoothly from the bottom to the top, the second region 3B protruding from the recess 73 is made more prominent, enhancing the sense of floating, while also creating a sophisticated overall design.

[0046] (6) The recess 73 is provided such that the distance D between the side walls 75 and 76 narrows as it moves towards the front of the vehicle. The support portion 4 has a shaft 41. The shaft 41 extends from the back portion 32 of the reflector 3 toward the side walls 75 and 76 of the recess 73, and its end portion 41a is supported by the side walls 75 and 76.

[0047] Since the shaft 41 is located on the rear side 32 of the reflector 3, from the driver's perspective, most of the shaft 41 is obscured by the reflector 3 and becomes inconspicuous. Also, because the distance D between the side walls 75 and 76 narrows toward the front of the vehicle, the end 41a of the shaft 41, which is offset from the reflector 3, overlaps with the side walls 75 and 76 when viewed from the rear of the vehicle. In other words, from the driver's perspective, the side walls 75 and 76 are located behind the end 41a of the shaft 41. For example, if the shaft 41 is the same color as the instrument panel 7, the end 41a of the shaft 41 will be embedded in the side walls 75 and 76, making it less conspicuous to the driver. This reduces the obstruction of the floating effect of the reflector 3 caused by the shaft 41.

[0048] (7) The head-up display device 1 is equipped with a rotation drive mechanism RM (angle adjustment mechanism) that adjusts the angle of the reflector 3 by rotating the shaft 41 around the rotation axis X.

[0049] By providing a rotational drive mechanism RM, the angle of the reflector 3 can be adjusted according to the position of the driver's eye point EP so that the image is easier to see, thereby improving the convenience of the head-up display device 1. Alternatively, the rotary drive mechanism RM may be omitted, allowing the driver to manually adjust the angle of the reflector 3. In this case, the driver may push or pinch the reflector 3 with their fingers, causing the shaft 41 fixed to the reflector 3 to rotate and adjust its angle.

[0050] [Example 1] Figure 7 shows the configuration of the head-up display device 1A according to modified example 1. Figure 8 is a view of the reflector 3 from above. Figure 9 shows the reflector 3 as viewed from the rear of the vehicle. In Modification 1, the same reference numerals are used for the same parts as in the above embodiment, and detailed descriptions are omitted. In Modified Example 1, the configuration of the support portion 4A of the head-up display device 1A is changed from the embodiment. As shown in FIG. 7, the connector 42A of the support portion 4A is fixed to the back surface portion 32 of the reflector 3 and provided so as to protrude from the back surface portion 32 toward the vehicle front side. In Modified Example 1, the protruding length of the connector 42A toward the vehicle rear side is made longer than in the embodiment. In other words, in Modified Example 1, the thickness (length in the vehicle front-rear direction) of the connector 42A is increased compared to the connector 42 of the embodiment. Thus, in Modified Example 1, by increasing the thickness of the connector 42A, the shaft 41 of the support portion 4A is positioned more on the vehicle front side than in the embodiment.

[0051] As shown in FIG. 8, within the recess 73, the reflector 3 is disposed at the position P1 in the vehicle front-rear direction, and the shaft 41 is disposed at the position P2. The position P2 is located more on the vehicle front side than the position P1. As shown in FIG. 9, the position P2 is a position where the distance D between the side wall portions 75 and 76 is narrower than the width W1 of the reflector 3 (W1 < D). Here, the "width W1 of the reflector" means the width W1 of the portion of the reflector 3 that overlaps the shaft 41 when viewed from the vehicle rear side. By disposing the shaft 41 at the position P2, when viewed from the vehicle rear side, the entire shaft 41 is in a state of overlapping the reflector 3. That is, in Modified Example 1, since the end portion 41a of the shaft 41 is not offset from the reflector 3 and does not overlap the gap S2, it is difficult for the driver to visually recognize it from the gap S2. That is, it is possible to reduce the inhibition of the floating feeling of the reflector 3 by the shaft 41.

[0052] As described above, the head-up display device 1A according to Modified Example 1 has the following configuration. (8) The shaft 41 is disposed at a position P2 in the recess 73 where the distance D between the side wall portions 75 and 76 is narrower than the width W1 (length in the vehicle width direction) of the reflector 3.

[0053] With this configuration, the entire shaft 41 overlaps the reflector 3 when viewed from the front or rear of the vehicle, making it difficult for the driver to see the shaft 41 and enhancing the floating appearance of the reflector 3.

[0054] [Differentiation 2] Figure 10 shows the configuration of the head-up display device 1B according to modified example 2. Figure 11 is a view of the reflector 3 from above. In the modified example 2, the configuration of the support portion 4B of the head-up display device 1B is changed from that of the embodiment. As shown in Figures 10 and 11, in the modified example 2, the support portion 4B has a pair of fixing portions 43 and 44 that are fixed to the front windshield 9. Although only the fixing portion 44 is shown in Figure 10, the fixing portion 43 has the same shape as the fixing portion 44. Furthermore, in the modified example 2, the front wall portion 77 is not connected to the vehicle-front side of the bottom wall portion 74 of the recess 73 of the instrument panel 7. That is, the recess 73 opens toward the glass surface of the front windshield 9 on the vehicle-front side.

[0055] As shown in Figure 11, the fixing parts 43 and 44 are attached to the back surface 32 of the reflector 3. The fixing parts 43 and 44 are spaced apart from each other in the vehicle width direction. The fixing parts 43 and 44 extend from the rear surface 32 of the reflector 3 toward the front of the vehicle, pass through the opening on the front side of the recess 73, and are fixed to the front windshield 9.

[0056] As shown in Figure 10, the height (vertical length) of the fixing parts 43 and 44 can be lower than the height of the reflector 3. As a result, when viewed from the rear of the vehicle, the entirety of the fixing parts 43 and 44 overlaps the reflector 3. Furthermore, the fixing parts 43 and 44 are positioned closer to the bottom surface 33 of the reflector 3 in the vertical direction and spaced apart from the top surface 36. This makes the fixing parts 43 and 44 less visible to the driver.

[0057] In Modification 2, the recess 73 opens toward the front windshield 9, so the support part 4B may be reflected in the front windshield seal and visible to the driver. However, Modification 2 has two fixing parts 43 and 44, which are spaced apart from each other, so the individual fixing parts can be made smaller. As a result, the fixing parts 43 and 44 become less conspicuous, so even if the reflection is visible to the driver, the obstruction of the floating appearance of the reflector 3 can be reduced. Furthermore, to make the individual fixing parts even smaller, three or more fixing parts may be provided.

[0058] In modification 2, the reflector 3 is fixed by fixing parts 43 and 44, so, unlike the embodiment, there is no rotational drive mechanism RM (angle adjustment mechanism) to adjust the angle of the reflector 3 to match the driver's eye point EP. In the case of the second modified example, for instance, the size of the display unit 2 may be made larger than in the embodiment, so that the display position of the image on the display unit 2 can be changed according to the eye point EP.

[0059] As described above, the head-up display device 1B according to modified example 2 has the following configuration. (9) The support portion 4B has a pair of fixing portions 43 and 44. The fixing portions 43 and 44 are spaced apart on the back portion 32 of the reflector 3 and are fixed to the front windshield 9. Since the fixing parts 43 and 44 overlap the reflector 3 when viewed from the front or rear of the vehicle, they are hidden from the driver's view by the reflector 3, and the effect of the reflector 3's floating appearance being obstructed by the fixing parts 43 and 44 is reduced. In addition, the driver may see the reflection of the fixing parts 43 and 44 on the front windshield 9, but by distributing the fixing parts 43 and 44, each fixing part can be made smaller, making the reflection less noticeable even if it is visible. [Explanation of symbols]

[0060] 1. Head-up display device (vehicle head-up display device) 2 Display 3 Reflector 3A 1st area 3B 2nd area 31 Front view 32 Back part 33 Bottom part 34, 35 Side sections (a pair of side sections) 36 Top part 37 corners 4 Support part 41 shaft 41a End X rotation axis 42, 42A connector 43, 44 Fixed part 7. Instrument Panel 71 Top surface 72 Storage Unit 73 recess 74 Bottom wall section 75, 76 Side wall section (a pair of side wall sections) 80 Hole 77 Front wall 78 Opening 9. Front windshield 91 Band-shaped portion V Vehicle VR cabin M meter EP Eye Point CU Display Control Unit RM Rotary Drive Mechanism (Angle Adjustment Mechanism) OP optical path IM image S, S1, S2 gap

Claims

1. An image display; A reflector that reflects the image of the display toward the eye point of the vehicle driver; A support portion that supports the reflector on the vehicle, and having, The reflector is disposed via a gap on an instrument panel of the vehicle, The support portion is provided on a back surface portion of the reflector, A head-up display device for a vehicle, characterized in that.

2. A recess is provided in the instrument panel, The reflector is disposed to face via a gap a wall portion that forms the recess, The head-up display device for a vehicle according to claim 1, characterized in that.

3. The reflector has a first region located within the recess and a second region protruding upward from the recess, The head-up display device for a vehicle according to claim 2, characterized in that.

4. The second region has a portion that is longer in the vehicle width direction than the first region, The head-up display device for a vehicle according to claim 3, characterized in that.

5. The recess includes a bottom wall portion and a pair of side wall portions that are connected to the bottom wall portion and slope away from each other in a direction from the lower side to the upper side, The reflector is inclined along the pair of side wall portions and includes a pair of side surface portions that face the pair of side wall portions via a gap, The head-up display device for a vehicle according to claim 3, characterized in that.

6. The recess is provided such that the distance between the pair of side wall portions decreases toward the front side of the vehicle, The support portion extends from a back surface portion of the reflector toward the pair of side wall portions and has a shaft supported by the pair of side wall portions, The head-up display device for a vehicle according to claim 5, characterized in that.

7. In the recess, the shaft is disposed at a position where the distance between the pair of side wall portions is narrower than the length of the reflector in the vehicle width direction, The head-up display device for a vehicle according to claim 6, characterized in that.

8. An angle adjustment mechanism for adjusting the angle of the reflector by rotating the shaft about a rotation axis, The head-up display device for a vehicle according to claim 6 or 7, characterized in that.

9. The support portion is spaced apart from a back surface portion of the reflector and has a pair of fixing portions fixed to a front windshield, The head-up display device for a vehicle according to claim 1, characterized in that.

Images