JP2022110595A - Display device for vehicles - Google Patents

Abstract

To provide a display device for vehicles with which it is possible to appropriately suppress vibration of a mirror.SOLUTION: In a HUD device, a display is mounted in a vehicle and emits display light. An aspherical mirror 31 reflects the display light emitted from the display toward a windshield. A mirror holder 32 holds the aspherical mirror 31. A pivoting mechanism 34 includes a pivot shaft 34a assembled to the mirror holder 32, and causes the pivot shaft 34a to be pivoted around an axis so as to change a direction of a reflection surface 31a of the aspherical mirror 31 held by the mirror holder 32. The pivoting mechanism 34 causes a rotary body M to be rotationally moved that includes a rear plate, the aspherical mirror 31 and the mirror holder 32, the rear plate turning together with the aspherical mirror 31 and the mirror holder 32 in accordance with the rotational movement of the pivot shaft 34a. The rotary body M has its center of gravity located above the pivot shaft 34a.SELECTED DRAWING: Figure 2

Description

The present invention relates to a vehicle display device.

Conventionally, as a vehicle display device, for example, Patent Document 1 discloses a display that emits projection light, a concave mirror that reflects the projection light emitted by the display toward the windshield of the vehicle, and a concave mirror. A head-up display device with a braking arm is described. This head-up display device suppresses the vibration of the concave mirror by suppressing the vibration transmitted to the concave mirror from the outside with the braking arm.

JP 2019-20746 A

By the way, the head-up display device described in Patent Literature 1 described above suppresses vibration of the concave mirror due to external vibrations by using, for example, a braking arm, but there is room for further improvement in this respect. .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vehicular display device capable of appropriately suppressing the vibration of the mirror.

In order to solve the above-described problems and achieve the object, a vehicle display device according to the present invention includes an emission section mounted on a vehicle for emitting display light, and a reflecting member for reflecting the display light emitted from the emission section. a mirror that reflects toward the mirror; a holding member that holds the mirror; a rotating mechanism for changing the orientation of the reflecting surface of the mirror, wherein the rotating mechanism includes a co-rotating member that co-rotates together with the mirror and the holding member according to the rotation of the rotating shaft; the mirror; Further, a rotating body including the holding member is rotated, and the center of gravity of the rotating body is positioned on the rotating shaft.

In the vehicle display device described above, the co-rotating member includes a reinforcing member assembled to the holding member to reinforce the holding member. It is preferable that the center of gravity of the entire rotating body including the reinforcing member is located on the rotating shaft.

In the vehicle display device described above, the holding member has the mirror positioned on the front side of the holding member, which is the reflecting member side, and the rear side opposite to the front side is formed in a rectangular shape. It is preferable that the reinforcing member is positioned at the rear side of the holding member, and that the reinforcing member is a continuously formed plate-like member extending to four corners on the back side of the holding member.

In the vehicle display device according to the present invention, since the center of gravity of the rotating body including the co-rotating member, the mirror, and the holding member is positioned on the rotating shaft, it is possible to appropriately suppress the vibration of the mirror.

FIG. 1 is a schematic diagram showing a mounting example of a HUD device according to an embodiment. FIG. 2 is a front view showing a configuration example of the HUD device according to the embodiment; FIG. 3 is a plan view showing a configuration example of the HUD device according to the embodiment; FIG. 4 is a diagram illustrating a configuration example of a rear plate according to the embodiment; FIG. 5 is a diagram showing an example of movement of the center of gravity of the rotating body according to the embodiment. FIG. 6 is a diagram illustrating an example of movement of the center of gravity of a rotating body according to a modification of the embodiment; FIG. 7 is a diagram illustrating a configuration example of a rear plate according to a modification of the embodiment; FIG. 8 is a diagram illustrating a configuration example of a rear plate according to a modification of the embodiment; FIG. 9 is a diagram illustrating a configuration example of a rear plate according to a modification of the embodiment; FIG. 10 is a diagram illustrating a configuration example of a rear plate according to a modification of the embodiment; FIG. 11 is a diagram illustrating a configuration example of a rear plate according to a modification of the embodiment;

Modes (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. In addition, the components described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the configurations described below can be combined as appropriate. In addition, various omissions, substitutions, or modifications of the configuration can be made without departing from the gist of the present invention.
[Embodiment]

A HUD (Head Up Display) device 1 according to an embodiment will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a mounting example of a HUD device 1 according to an embodiment. FIG. 2 is a front view showing a configuration example of the HUD device 1 according to the embodiment. FIG. 3 is a plan view showing a configuration example of the HUD device 1 according to the embodiment. FIG. 4 is a diagram showing a configuration example of the rear plate 33 according to the embodiment. FIG. 5 is a diagram showing an example of movement of the center of gravity G of the rotating body M according to the embodiment.

An instrument panel 101 is installed in front of the vehicle V when viewed from the eye point E of the driver P. As shown in FIG. Here, the eye point E is the viewpoint position of the driver P seated in the driver's seat. The instrument panel 101 is a member that partitions a compartment space in front of the vehicle V, and is equipped with a gauge 103 such as a speedometer. The instrument panel 101 has the HUD device 1 installed in its internal space. The instrument panel 101 is provided with an opening 102 through which the display light projected from the HUD device 1 passes. A windshield 104 is installed in front of the instrument panel 101 . The windshield 104 forms a boundary between the interior and exterior of the vehicle V, and allows the scenery ahead in the traveling direction of the vehicle V to pass therethrough.

The HUD device 1 is an example of a vehicle display device, and is mounted on a vehicle V. As shown in FIG. The HUD device 1 is installed, for example, in an internal space inside the instrument panel 101 . The HUD device 1 displays a virtual image S forward in the traveling direction of the vehicle V through the windshield 104 of the vehicle V when viewed from the eye point E of the driver P. The HUD device 1 includes, for example, a housing 10, a display 20 as an emission section, and a light reflection unit 30, as shown in FIG.

The housing 10 accommodates various parts. The housing 10 is made of, for example, a synthetic resin material and molded into a box shape, and has an internal space inside. The housing 10 accommodates the display 20 and the light reflecting unit 30 in its internal space and supports them.

The display 20 emits display light containing display information. The display 20 includes a liquid crystal panel (not shown) that displays display information, a backlight (not shown) provided behind the liquid crystal panel, and the like. The display device 20 emits display light from the liquid crystal panel by irradiating the rear surface of the liquid crystal panel with light from the backlight.

The light reflection unit 30 reflects display light emitted from the display 20 . The light reflecting unit 30 includes an aspherical mirror 31 as a mirror, a mirror holder 32 as a holding member, a back plate 33 as a reinforcing member (co-rotating member), and a rotating mechanism 34 .

Here, the direction along the rotation shaft 34a of the rotation mechanism 34 is called the axial direction. The direction in which the aspherical mirror 31 and the mirror holder 32 face each other is called the depth direction. A direction representing the height of the aspherical mirror 31 (or the mirror holder 32) is referred to as a height direction. The axial direction, the depth direction, and the height direction intersect (eg, orthogonally) each other.

The aspherical mirror 31 has an optical characteristic for forming a virtual image S ahead of the vehicle V in the traveling direction. Aspherical mirror 31 is held by mirror holder 32 . The aspherical mirror 31 includes a reflecting surface 31a (see FIG. 2) that reflects light, and the reflecting surface 31a is provided facing the display 20. As shown in FIG. Reflecting surface 31 a magnifies the display light emitted from display 20 and reflects the magnified display light toward windshield 104 . The display light reflected by the aspherical mirror 31 passes through the opening 102 of the instrument panel 101, is reflected by the windshield 104, and reaches the eye point E of the driver P. Thereby, the driver P can visually recognize the virtual image S displayed in front of the vehicle V in the traveling direction.

The mirror holder 32 holds the aspheric mirror 31 . The mirror holder 32 is made of, for example, a synthetic resin material and molded into a rectangular shape, and as shown in FIG. Configured.

The mirror fixing portion 32a is a portion for fixing the aspherical mirror 31. As shown in FIG. The mirror fixing portion 32a is provided on the front side of the mirror holder 32, which is the windshield 104 side. The mirror fixing portion 32a is formed in a rectangular shape when viewed from the depth direction, and the surface of the mirror fixing portion 32a is recessed. The surface of the mirror fixing portion 32a is, for example, recessed in an arc shape along the axial direction. The mirror fixing portion 32a abuts on the rear surface side of the aspherical mirror 31 opposite to the reflecting surface 31a to fix the aspherical mirror 31 .

The rear plate fixing portion 32b is a portion for fixing the rear plate 33. As shown in FIG. The rear plate fixing portion 32b is provided on the rear side opposite to the front side of the mirror holder 32 . The rear plate fixing portion 32b is formed in a rectangular shape when viewed from the depth direction, and the surface of the rear plate fixing portion 32b is formed flat. The rear plate fixing portion 32 b abuts the rear plate 33 and fixes the rear plate 33 .

The rotating shaft insertion portion 32c is a portion through which the rotating shaft 34a of the rotating mechanism 34 is inserted. The rotation shaft insertion portion 32c is open in a cylindrical shape along the axial direction. The rotating shaft insertion portion 32c is in a state in which the rotating shaft 34a is inserted and fixed, and the distal end portions of the rotating shaft 34a are exposed from both sides of the rotating shaft insertion portion 32c.

The rear plate 33 reinforces the mirror holder 32 . The rear plate 33 is a continuously formed flat metal member. For example, as shown in FIG. 4, the rear plate 33 is formed in a "U" shape with a rectangular corner portion C when viewed from the depth direction. The rear plate 33D includes two axially extending portions 33s and 33t extending along the axial direction and one height extending portion 33u extending along the height direction. . The axially extending portion 33s and the axially extending portion 33t extend along the axial direction and are provided side by side along the height direction. The height-direction extending portion 33u extends along the height direction and connects the end of the axially-extending portion 33s and the end of the axially-extending portion 33t.

The rear plate 33 is assembled and fixed to the rear plate fixing portion 32 b of the mirror holder 32 . The rear plate 33 extends to four corners C at the rear plate fixing portion 32b. The rear plate 33 has, for example, axially extending portions 33s and 33t extending to four corners C at the rear plate fixing portion 32b. The rear plate 33 reinforces the mirror holder 32 so that the mirror holder 32 can firmly hold the aspherical mirror 31 . The back plate 33 is a member that rotates together with the aspherical mirror 31 and the mirror holder 32 in the same direction as the rotating shaft 34a of the rotating mechanism 34 when the rotating shaft 34a rotates. The back plate 33, the aspherical mirror 31, and the mirror holder 32 constitute a rotating body M. As shown in FIG. A center of gravity G of the rotating body M is positioned on the rotating shaft 34 a of the rotating mechanism 34 .

The rotating mechanism 34 changes the orientation of the reflecting surface 31a of the aspherical mirror 31 . The rotating mechanism 34 includes a rotating shaft 34a, a spring 34b, and a driving motor 34c. The rotating shaft 34 a is formed in a cylindrical rod shape and is assembled to the mirror holder 32 . The rotating shaft 34a is inserted through, for example, a rotating shaft insertion portion 32c of the mirror holder 32, and is fixed to the rotating shaft insertion portion 32c. The rotating shafts 34a are inserted through the rotating shaft insertion portions 32c and fixed, and the tip portions of the rotating shafts 34a in the axial direction are exposed from the rotating shaft insertion portions 32c. The rotating shafts 34 a are supported by the frame 35 with their exposed distal ends inserted through the openings 35 a of the frame 35 . The rotating shaft 34a configured in this manner rotatably supports the rotating body M including the aspherical mirror 31, the mirror holder 32, and the back plate 33. As shown in FIG.

The spring 34b biases the rotating body M in a predetermined direction. The spring 34b is, for example, a torsion coil spring, and has one end attached to the frame 35 and the other end attached to the rear plate 33 of the rotating body M. As shown in FIG. The spring 34b urges the rotating body M in the rotating direction of the rotating body M and applies constant tension to the rotating body M, thereby suppressing rattling of the rotating body M in the rotating direction. .

The driving motor 34c provides a driving force for rotating the rotating body M. As shown in FIG. The driving motor 34c has a rotating motor shaft connected to the rotating shaft 34a or the mirror holder 32 via a gear (not shown). The drive motor 34c rotates the rotary motor shaft, thereby transmitting the rotary force to the rotary shaft 34a or the mirror holder 32 via gears, and the rotary body M including the mirror holder 32 is rotated by the transmitted rotary force. It is rotated around the axis of the drive shaft 34a. The drive motor 34c changes the orientation of the reflecting surface 31a of the aspherical mirror 31 held by the mirror holder 32 by rotating the rotating shaft 34a around the axis.

In the HUD device 1 configured as described above, the center of gravity G1 of the rotating body M is not positioned on the rotating shaft 34a when the rear plate 33 is not assembled to the mirror holder 32, as shown in FIG. That is, the center of gravity G1 of the entire rotating body M that does not include the back plate 33 is not located on the rotating shaft 34a. In other words, the center of gravity G1 of the rotating body M composed of the co-rotating members that do not include the aspherical mirror 31, the mirror holder 32, and the back plate 33 is not positioned on the rotating shaft 34a. On the other hand, the center of gravity G2 of the rotating body M is positioned on the rotating shaft 34a when the rear plate 33 is attached to the mirror holder 32. As shown in FIG. That is, the center of gravity G2 of the entire rotating body M including the back plate 33 is positioned on the rotating shaft 34a. In other words, the center of gravity G2 of the rotating body M, which is composed of co-rotating members including the aspherical mirror 31, the mirror holder 32, and the back plate 33, is located on the rotating shaft 34a. The center of gravity G2 of the rotating body M is positioned, for example, at the center Q in the axial direction of the rotating shaft 34a. Thereby, the HUD device 1 can suppress the vibration of the aspherical mirror 31 .

As described above, the HUD device 1 according to the embodiment includes the display device 20, the aspherical mirror 31, the mirror holder 32, and the rotation mechanism . The indicator 20 is mounted on the vehicle V and emits display light. The aspherical mirror 31 reflects the display light emitted from the display 20 toward the windshield 104 . A mirror holder 32 holds the aspherical mirror 31 . The rotating mechanism 34 has a rotating shaft 34a assembled to the mirror holder 32, and rotates the rotating shaft 34a around the axis to rotate the reflecting surface 31a of the aspherical mirror 31 held by the mirror holder 32. change the orientation of the The rotating mechanism 34 includes a rear plate 33, an aspherical mirror 31, and a back plate 33 that rotate together with the aspherical mirror 31 and the mirror holder 32 in the same direction as the rotating direction of the rotating shaft 34a in accordance with the rotation of the rotating shaft 34a. The rotating body M including the mirror holder 32 is rotated. The rotating body M has a center of gravity G of the rotating body M located on the rotating shaft 34a.

With this configuration, in the HUD device 1, the center of gravity G of the rotating body M is positioned on the rotating shaft 34a, so that the mass imbalance of the rotating body M can be suppressed. That is, the HUD device 1 is not eccentric because the center of gravity G of the rotating body M is positioned on the rotating shaft 34a. can be suppressed. Thereby, the HUD device 1 can appropriately suppress the vibration of the aspherical mirror 31 caused by the vibration transmitted to the rotating body M from the outside. Therefore, the HUD device 1 can suppress the shaking of the virtual image S visually recognized from the eye point E through the windshield 104, and as a result, the virtual image S can be displayed properly. As the center of gravity G of the rotating body M moves away from the rotating shaft 34a, the rotating body M tends to be more susceptible to external vibrations and the vibration tends to increase. Being located on 34a can make it less susceptible to such effects. In addition, the HUD device 1 tends to have a large aspherical mirror 31 , and this is effective in suppressing vibration of the large aspherical mirror 31 .

In the HUD device 1 described above, the rear plate 33 is a reinforcing member that is attached to the mirror holder 32 and reinforces the mirror holder 32 . The center of gravity G1 of the entire rotating body M that does not include the back plate 33 is not positioned on the rotating shaft 34a. The center of gravity G2 of the entire rotating body M including the back plate 33 is located on the rotating shaft 34a.

With this configuration, the HUD device 1 can adjust the center of gravity G of the rotating body M on the rotating shaft 34 a by assembling the rear plate 33 to the mirror holder 32 . The HUD device 1 can adjust the center of gravity G of the rotating body M on the rotating shaft 34a by, for example, changing the shape and weight of the existing back plate 33 without adding new parts. . Thereby, the HUD device 1 can suppress an increase in the number of parts and an increase in the number of assembly man-hours, and can suppress manufacturing costs.

In the HUD device 1 described above, the mirror holder 32 has the aspherical mirror 31 positioned on the front side of the mirror holder 32, which is the windshield 104 side, and the rear side opposite to the front side is formed in a rectangular shape. A rear plate 33 is located on the side. The rear plate 33 is a continuously formed plate-like member and extends to four corners C on the rear side of the mirror holder 32 . With this configuration, in the HUD device 1, the strength of the mirror holder 32 is ensured by the back plate 33, and the center of gravity G of the rotating body M can be adjusted on the rotation shaft 34a by the back plate 33.

In the HUD device 1 described above, the center of gravity G of the rotating body M is positioned, for example, at the center Q in the axial direction of the rotating shaft 34a. With this configuration, the HUD device 1 can suppress imbalance in the mass of the rotating body M in the axial direction. Thereby, the HUD device 1 can suppress the vibration of the rotating body M in the crossing direction crossing the axial direction.

The HUD device 1 includes an aspherical mirror (curved mirror) 31 that is formed in a curved shape including an aspherical surface, magnifies the display light emitted from the display 20 and reflects it toward the windshield 104 . This aspherical mirror 31 is a final mirror that reflects, toward the windshield 104 , enlarged display light, which is obtained by enlarging the display light emitted from the display device 20 . In the conventional HUD device, since the curved mirror has a curved shape, the center of gravity of the rotating member including the curved mirror tends to deviate from the rotation axis and eccentricity occurs more easily than in the flat mirror. In this case, the curved mirror tends to vibrate due to vibration transmitted from the outside to the rotating member. In contrast, the HUD device 1 according to the embodiment corrects the eccentricity by positioning the center of gravity G of the rotating body M on the rotation axis 34a for the aspherical mirror 31, which tends to cause such eccentricity. Therefore, it is particularly effective in suppressing the vibration of the aspherical mirror 31 .
[Modification]

Next, modifications of the embodiment will be described. In the modified example, the same reference numerals are given to the same components as in the embodiment, and the detailed description thereof will be omitted. Although the example in which the center of gravity G of the rotating body M is positioned at the center Q in the axial direction of the rotating shaft 34a has been described, the present invention is not limited to this. FIG. 6 is a diagram showing an example of movement of the center of gravity G of the rotating body M according to a modification of the embodiment. For example, as shown in FIG. 6, the center of gravity G of the rotating body M may be located at a position different from the center Q on the rotating shaft 34a (for example, the position of the center of gravity G3 on the rotating shaft 34a). Such a position of the center of gravity G3 is appropriately determined according to the position of the center of gravity of the rotating body M before being adjusted by the back plate 33 . For example, as shown in FIG. 6, when the center of gravity of the rotating body M before being adjusted by the back plate 33 is positioned at the center of gravity G1, the center of gravity of the rotating body M after being adjusted by the back plate 33 is aligned with the rotation axis. It is defined at the position of the center of gravity G3 on 34a. Thereby, the HUD device 1 can further balance the center of gravity.

Moreover, although the example in which the rear plate 33 is formed in a “U” shape has been described, the shape is not limited to this, and may be in another shape. FIG. 7 is a diagram showing a configuration example of a rear plate 33A according to a modification of the embodiment. As shown in FIG. 7, the back plate 33A is formed in a rectangular shape when viewed from the depth direction, and one rectangular opening 33h is provided in the back plate main body. The rear plate 33A extends to four corners C at the rear plate fixing portion 32b of the mirror holder 32. As shown in FIG.

FIG. 8 is a diagram showing a configuration example of a rear plate 33B according to a modification of the embodiment. As shown in FIG. 8, the rear plate 33B is formed in an "E" shape when viewed from the depth direction. The rear plate 33B includes one axially extending portion 33i extending along the axial direction and three heightwise extending portions 33j, 33k, and 33m extending along the height direction. be done. The axially extending portion 33i extends along the axial direction. The height-direction extending portion 33j is provided on one side in the axial direction of the axial-direction extending portion 33i and extends along the upper side in the height direction from the axial-direction extending portion 33i. The height direction extending portion 33k is provided on the other side in the axial direction of the axial direction extending portion 33i and extends upward in the height direction from the axial direction extending portion 33i. The height direction extension portion 33m is provided in the axial center of the axial direction extension portion 33i, that is, between the height direction extension portion 33j and the height direction extension portion 33k. extends along the upper side in the height direction from the The rear plate 33B extends to four corners C at the rear plate fixing portion 32b of the mirror holder 32. As shown in FIG.

FIG. 9 is a diagram showing a configuration example of a rear plate 33C according to a modification of the embodiment. As shown in FIG. 9, the rear plate 33C is formed in an "E" shape when viewed from the depth direction. The rear plate 33C includes one axially extending portion 33n extending along the axial direction and three heightwise extending portions 33p, 33q, and 33r extending along the height direction. be done. The axially extending portion 33n extends along the axial direction. The height direction extending portion 33p is provided on one side of the axial direction extending portion 33n in the axial direction, and extends along the lower side in the height direction from the axial direction extending portion 33n. The height direction extending portion 33q is provided on the other side in the axial direction of the axial direction extending portion 33n, and extends along the lower side in the height direction from the axial direction extending portion 33n. The height direction extension portion 33r is provided in the center of the axial direction extension portion 33n in the axial direction, that is, between the height direction extension portion 33p and the height direction extension portion 33q. extends along the lower side in the height direction from the The rear plate 33</b>C extends to four corners C at the rear plate fixing portion 32 b of the mirror holder 32 .

FIG. 10 is a diagram showing a configuration example of a rear plate 33D according to a modification of the embodiment. As shown in FIG. 10, the rear plate 33D is formed in a "figure 8" shape when viewed from the depth direction. The rear plate 33 is formed in a "figure 8" shape by, for example, providing two rectangular openings 33a and 33b side by side along the axial direction. Specifically, the rear plate 33 has two axially extending portions 33c and 33d extending along the axial direction and three heightwise extending portions 33e and 33f extending along the height direction. , 33g. The axially extending portion 33c is provided on one side in the height direction of the back plate body, and the axially extending portion 33d is provided on the other side in the height direction of the back plate body. The height direction extending portion 33e is provided on one side of the rear plate main body in the axial direction, and the height direction extending portion 33f is provided on the other side of the rear plate main body in the axial direction and extends in the height direction. The existing portion 33g is provided in the axial center of the rear plate main body, that is, between the openings 33a and 33b. The rear plate 33D extends to four corners C at the rear plate fixing portion 32b of the mirror holder 32. As shown in FIG. In this way, the rear plate 33D is formed in a "figure 8" shape, and thus has a line-symmetrical shape in the axial direction. This eliminates the need to change the mounting direction of the rear plate 33D according to the mounting positions of the left and right handles.

FIG. 11 is a diagram showing a configuration example of a rear plate 33E according to a modification of the embodiment. As shown in FIG. 11, the rear plate 33E is formed in an "X" shape when viewed from the depth direction. The rear plate 33E includes two extensions 33v and 33w. The extending portion 33v and the extending portion 33w extend along a diagonal line in the rear plate fixing portion 32b of the mirror holder 32 and intersect each other. The rear plate 33E extends to four corners C at the rear plate fixing portion 32b of the mirror holder 32. As shown in FIG.

In the above description, an example in which the vehicle display device is the HUD device 1 that displays the virtual image S in front of the vehicle V has been described. It may be a display device for displaying.

Although an example in which the rotating body M includes the aspherical mirror 31, the mirror holder 32, and the back plate 33 has been described, the present invention is not limited to this. If the rotating body M is a co-rotating member that rotates together with the aspherical mirror 31 and the mirror holder 32 in the same direction as the rotating shaft 34a of the rotating mechanism 34 when the rotating shaft 34a of the rotating mechanism 34 rotates. , and other members (eg, gears, etc.).

Although an example in which the rotating body M includes the rear plate 33 as a reinforcing member has been described, the present invention is not limited to this, and may not include the rear plate 33 .

Although an example in which the center of gravity G of the rotating body M is adjusted by the back plate 33 has been described, the present invention is not limited to this, and may be adjusted by a member other than the back plate 33 .

The rear plate 33 is a continuously formed plate-like member and extends to the four corners C on the rear side of the mirror holder 32, but it is not limited to this, and other shapes may be used. There may be.

Although an example in which the reflective member is the windshield 104 has been described, it is not limited to this, and may be a combiner or the like.

Although the aspheric mirror 31 has been described as an example of the mirror, the present invention is not limited to this, and the mirror may be, for example, a curved mirror having a curved surface, a flat mirror having a planar shape, or the like.

1 HUD device (vehicle display device)
20 display (output unit)
31 aspherical mirror (mirror)
31a reflecting surface 32 mirror holder (holding member)
33 back plate (reinforcing member, co-rotating member)
34 rotation mechanism 34a rotation shaft 104 windshield (reflection member)
C Corner G Center of Gravity M Rotating Body Q Center V Vehicle

Claims (3)

an emission unit mounted on a vehicle and emitting display light;
a mirror that reflects the display light emitted from the emitting portion toward a reflecting member;
a holding member that holds the mirror;
a rotating mechanism having a rotating shaft assembled to the holding member and rotating the rotating shaft around an axis to change the orientation of the reflecting surface of the mirror held by the holding member; ,
The rotating mechanism rotates a rotating body including a co-rotating member that rotates together with the mirror and the holding member in accordance with the rotation of the rotating shaft, the mirror, and the holding member;
A vehicular display device, wherein a center of gravity of the rotating body is positioned on the rotating shaft. the co-rotating member includes a reinforcing member that is assembled to the holding member and reinforces the holding member;
the center of gravity of the entire rotating body that does not include the reinforcing member is not located on the rotating shaft,
2. The vehicle display device according to claim 1, wherein the center of gravity of the rotating body including the reinforcing member is located on the rotating shaft. In the holding member, the mirror is positioned on the front side of the holding member, which is the reflecting member side, the rear side opposite to the front side is formed in a rectangular shape, and the reinforcing member is positioned on the rear side. ,
3. The vehicle display device according to claim 2, wherein the reinforcing member is a continuously formed plate-like member and extends to four corners on the back side of the holding member.

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