TWM548275U - Adjustable reflector for head-up display and head-up display comprising the same - Google Patents

Abstract

An adjustable reflector for head-up display includes a base, an adjusting frame, a reflecting element, an elastic member, a control module and a cushion pad. The adjusting frame has a first end and a second end. The first end is pivoted to the base, and the second end is rotatable around the first end. The reflecting element is arranged on the adjusting frame for reflecting a light beam generated by a light source to an optical combiner. The elastic member is connected between the base and the adjusting frame for driving the second end of the adjusting frame to rotate toward the base. The control module includes a rotary arm abutting against the adjusting frame, and a driving unit configured to drive the rotary arm to rotate for adjusting an included angle between the adjusting frame and the base.

Description

Adjustable reflector of head-up display device and head-up display device comprising same

The present invention relates to an adjustable reflector for a head-up display device, and more particularly to an adjustable reflector for a head-up display device that improves image stability.

Please refer to FIG. 1 , which is a schematic diagram of a conventional head-up display device. In general, the conventional head-up display device 100 includes a light source 110, a lens 120, a mirror 130, and a stacking unit 140. The light beam L generated by the light source 110 is refracted by the lens 120 and then reflected by the mirror 130 to the image unit 140. The light beam L reflected to the superimposing unit 140 forms a virtual image to provide relevant information to the driver, such as a vehicle speed message, a time message, and a navigation message. Since different drivers have different heights and seating positions, in order to allow the driver to easily see the message displayed by the head-up display device, the reflection angle of the mirror 130 can be adjusted to reflect the light beam L to the appropriate position on the image unit 140. . For example, when the driver's height is short, the head-up display device 100 can rotate the mirror 130, thereby moving the position of the light beam L onto the image-mapping unit from the first position P1 to the lower second position P2. However, the imaging distance of the virtual image on the superimposing unit 140 is related to the traveling distance of the light beam L from the lens 120 to the superimposing unit 140. When the position where the light beam L is reflected onto the superimposing unit 140 is moved from the first position P1 to the second position P2, the traveling distance of the light beam L from the mirror 130 to the superimposing unit 140 is shortened from a2 to a3, thereby changing the virtual image. Imaging distance. Furthermore, when the position where the light beam L is reflected onto the superimposing unit 140 is moved from the first position P1 to the second position P2, the incident angle of the light beam L also changes, thereby causing image distortion. Therefore, when the conventional head-up display device 100 adjusts the reflection angle of the mirror 130, the head-up display device 100 has a lower image stability.

The present invention provides an adjustable reflector for a head-up display device comprising a base, an adjustment frame, a reflective element, an elastic member and a control module. The mounting bracket has a first end and a second end. The first end is pivotally connected to the base, and the second end is rotatable relative to the first end. The reflective element is disposed on the mount for reflecting a light beam generated by a light source of the head display device to a stack of image units of the head display device. The elastic member is coupled between the adjusting frame and the base to provide an elastic force to drive the second end of the adjusting frame to rotate toward the base. The control module includes a rotating arm abutting the adjusting frame, and a driving unit for driving the rotating arm to rotate to adjust an angle between the adjusting frame and the base.

The present invention further provides a head-up display device comprising a light source, a stack of image units, and an adjustable reflector. The light source is used to generate a light beam. The image unit is configured to display an image according to an incident light beam. The adjustable reflector comprises a base, an adjustment frame, a reflective element, an elastic member and a control module. The mounting bracket has a first end and a second end. The first end is pivotally connected to the base, and the second end is rotatable relative to the first end. The reflective component is disposed on the mount for reflecting a light beam generated by the light source to the image stacking unit. The elastic member is coupled between the adjusting frame and the base to provide an elastic force to drive the second end of the adjusting frame to rotate toward the base. The control module includes a rotating arm abutting the adjusting frame, and a driving unit for driving the rotating arm to rotate to adjust an angle between the adjusting frame and the base.

Please also refer to Figures 2 and 3. Figure 2 is a schematic illustration of a first embodiment of the inventive adjustable reflector. Figure 3 is a schematic view of the adjustable reflector of Figure 2 from another perspective. As shown, the present illustrative adjustable reflector 10 includes a base 11, an adjustment frame 12, a reflective member 13, an elastic member 14, and a control module 15. The adjustment frame 12 has a first end 12a and a second end 12b. The first end 12a of the adjustment frame 12 is pivotally connected to the base 11, and the second end 12b of the adjustment frame 12 is rotatable relative to the first end 12a. The reflective element 13 is disposed on the mount 12. The elastic member 14 is connected between the adjusting frame 12 and the base 11 for providing an elastic force to drive the second end 12b of the adjusting frame 12 to rotate toward the base 11. The control module 15 includes a rotating arm 17 and a driving unit 16. The rotating arm 17 is abutted against the mount 12. Drive unit 16 (e.g., including a motor and associated transmission mechanism) can be used to drive rotation of rotating arm 17.

According to the above configuration, when the driving unit 16 drives the rotating arm 17 to rotate, the rotating arm 17 drives the adjusting frame 12 to rotate to change the angle between the adjusting frame 12 and the base 11, thereby changing the reflection angle of the reflecting member 13. Furthermore, the elastic member 14 can maintain the contact state between the adjustment frame 12 and the rotating arm 17 to prevent the adjustment frame 12 from shaking.

In addition, the creative adjustable reflector 10 can further include a cushion 18 disposed between the rotating arm 17 and the adjusting frame 12 for absorbing the impact force between the rotating arm 17 and the adjusting frame 12, thereby adding an adjustable reflector. 10 stability.

In the first embodiment of the presently configurable reflector, the reflective element 13 is a flat mirror, but the present invention is not limited thereto. In other embodiments of the presently configurable reflector 20, the reflective element 13 can also be a concave mirror. The creative adjustable reflector can be set according to the design requirements of the appropriate kind of reflective components.

Please refer to Figure 4. Figure 4 is a schematic view of a first embodiment of the present head-up display device. As shown in FIG. 4, the present head-up display device 200 includes a light source 210, a lens 220, an adjustable reflector 10, and a stacking unit 240. The light source 210 is used to generate the light beam L. The lens 220 is disposed between the light source 210 and the adjustable reflector 10 for refracting the light beam L generated by the light source 210. The adjustable reflector 10 is for reflecting the light beam passing through the lens 220 to the image unit 240. In the present embodiment, the reflective element 13 of the adjustable reflector 10 is a flat mirror. When the adjustable reflector 10 reflects the light beam L onto the image unit 240, the light beam L forms a virtual image on the image unit 240 to provide relevant driving information to the driver, such as a vehicle speed message, a time message, and a navigation message. The virtual image on the superimposed image unit 240 is superimposed on the scene in front of the driver and does not affect the driver's line of sight. On the other hand, the image unit 240 may be formed with a plurality of scattering units (for example, protruding structures) for scattering light to further increase the viewing angle range of the virtual image on the image unit 240.

In addition, the present head-up display device 200 may further include a gravity sensor 250 for sensing an angle between the head-up display device 200 and a horizontal plane. The control module 15 can be used to adjust the angle between the mount 12 and the base 11 according to the sensing result of the gravity sensor 250. For example, when the vehicle is going uphill, the driver's line of sight may be off, and the control module 15 may adjust the angle between the adjustment frame 12 and the base 11 according to the sensing result of the gravity sensor 250 to reflect the light beam L. The position on the stacking unit 240 is moved downward; when the vehicle is going downhill, the driver's line of sight is biased, and the control module 15 can adjust the position between the adjusting frame 12 and the base 11 according to the sensing result of the gravity sensor 250. The angle is such that the light beam L is reflected up to the position on the image unit 240.

Furthermore, the present head-up display device 200 can further include an eye tracking sensor 260 for sensing the relative position between the head-up display device 200 and a user. The control module 15 can be further used to adjust the angle between the mount 12 and the base 11 according to the sensing result of the eyeball tracking sensor 260. For example, when the height of the driver is high, the control module 15 can adjust the angle between the adjustment frame 12 and the base 11 according to the sensing result of the eyeball tracking sensor 260, so that the light beam L is reflected to the image unit. The position on the 240 is moved up; and when the height of the driver is short, the control module 15 can adjust the angle between the adjustment frame 12 and the base 11 according to the sensing result of the eye tracking sensor 260 to reflect the light beam L. The position on the image stack unit 240 is moved down.

On the other hand, the control module 15 can be electrically connected to a speedometer 270 of a vehicle for adjusting the angle between the mount 12 and the base 11 according to the sensing result of the speedometer 270. For example, when the speed of the vehicle is fast, the driver will look at the distance, so the driver's line of sight will be biased, and the control module 15 can adjust the adjustment frame 12 and the base 11 according to the sensing result of the speedometer 270. The angle is such that the light beam L is reflected to the position on the image unit 240, and when the speed of the vehicle is slow, the driver looks at the vicinity, so that the driver's line of sight is biased downward, and the control module 15 can be The sensing result of the speedometer 270 adjusts the angle between the mount 12 and the base 11 to cause the light beam L to be reflected down to the position on the superimposing unit 240.

Please refer to Figure 5 and refer to Figure 4 together. Fig. 5 is a view showing the adjustment of the adjustable reflector by the head-up display device of Fig. 4. For convenience of explanation, some elements of the head-up display device of Fig. 4 are omitted in Fig. 5. When the reflecting element 13 reflects the light beam L to the first position P1 on the superimposing unit 240, the traveling distance of the light beam L from the lens 220 to the superimposing unit 240 is (a1 + a2). When the head-up display device 200 adjusts the adjustable reflector 10 to reflect the light beam L to the second position P2 on the image unit 240, the traveling distance of the light beam L from the lens 220 to the image unit 240 is (a1+a4+). A5). Compared with the beam travel distance (a1+a3) after the conventional head-up display device 100 rotates the reflective member 130, the adjusted beam travel distance (a1+a4+a5) of the present head-up display device 200 is closer to the beam travel before the adjustment. Distance (a1+a2). In other words, the imaging distance of the virtual image on the present overlay unit 240 is less affected by the adjustment of the adjustable reflector 10. On the other hand, compared with the incident angle of the light beam of the conventional head-up display device at the second position P2 on the image-forming unit, the incident angle of the light beam of the present head-up display device 200 at the second position P2 on the image-folding unit is closer to the light beam. The angle of incidence of the first position P1 on the image unit. In other words, the virtual image on the original image forming unit 240 is less deformed by the change in the incident angle.

Please refer to FIG. 6, which is a schematic diagram of a second embodiment of the present head-up display device. In the embodiment of Fig. 6, the heads up display device 300 replaces the lens with a curved mirror 230. The curved mirror 230 is used to reflect the light beam L generated by the light source 210 to the reflective element 13, and the reflective element reflects the light beam L onto the image unit 240 to form a virtual image. Since the operation of the second embodiment of the present head-up display device is similar to that of the first embodiment of the present head-up display device, it will not be described.

Please refer to FIG. 7, which is a schematic diagram of a third embodiment of the present head-up display device. In the embodiment of Figure 7, the reflective element 13 of the adjustable reflector 20 is a concave mirror. Since the concave mirror can directly reflect the light beam L generated by the light source 210 onto the image unit 240 to form a virtual image, the lens can be omitted. In addition, the distance between the concave mirror 13 and the light source 210 must be kept constant, so that the light source 210 is rotated with the adjustment frame 12. For example, the light source 210 can be coupled to the mount 12 to rotate with the mount 12.

Please refer to Figure 8 and refer to Figure 7 together. Fig. 8 is a view showing the adjustment of the adjustable reflector by the head-up display device of Fig. 7. For convenience of explanation, some elements of the head-up display device of Fig. 7 are omitted in Fig. 8. In the present embodiment, the imaging distance of the virtual image on the superimposing unit 240 is related to the traveling distance of the light beam L from the reflective element 13 to the superimposing unit 240. When the reflecting member 13 reflects the light beam L to the first position P1 on the superimposing unit 240, the traveling distance of the light beam L from the reflecting member 13 to the superimposing unit 240 is a2. When the head-up display device 400 adjusts the adjustable reflector 10 to reflect the light beam L to the second position P2 on the superimposing unit 240, the traveling distance of the light beam from the reflecting member 13 to the overlapping unit 240 is a6. Compared with the beam travel distance a3 after the conventional head-up display device rotates the mirror, the adjusted beam travel distance a6 of the present head-up display device 400 is closer to the beam travel distance a2 before the adjustment. In other words, the imaging distance of the virtual image on the present overlay unit 240 is less affected by the adjustment of the adjustable reflector 10. On the other hand, compared with the incident angle of the light beam of the conventional head-up display device at the second position P2 on the image-drawing unit, the incident angle of the light beam of the present head-up display device 400 at the second position P2 on the image-rapping unit 240 is closer. The angle of incidence of the beam at the first position P1 on the image unit 240. In other words, the virtual image on the original image forming unit 240 is less deformed due to the change in the incident angle.

In the fourth to eighth figures, the configuration of the present head-up display device is merely an example, and the present invention is not limited thereto. In other embodiments of the present invention, the mounting position and mounting angle of the light source 210, the lens 220, the curved mirror 230, the adjustable reflector 10, and the image stacking unit 240 may be changed according to design requirements. For example, the base 11 of the adjustable reflector 10 can be horizontally placed, and the base 11 of the adjustable reflector 10 can also be placed vertically or obliquely.

Compared with the prior art, when the present type of head-up display device adjusts the adjustable reflector, the variation of the beam travel distance is small, so the variation of the imaging distance of the virtual image on the image unit is small. Moreover, the variation angle of the incident angle of the light beam on the image unit is also small, so the deformation amplitude of the virtual image on the image unit is small. Therefore, the creative adjustable reflector can improve the image stability of the head-up display device.

10‧‧‧Adjustable reflector
11‧‧‧Base
12‧‧‧Adjustable frame
12a‧‧‧First end of the mount
12b‧‧‧ adjuster second end
13‧‧‧Reflective components
14‧‧‧Flexible parts
15‧‧‧Control Module
16‧‧‧Drive unit
17‧‧‧Rotating arm
18‧‧‧ cushion
100‧‧‧Study head-up display device
110‧‧‧Light source
120‧‧‧ lens
130‧‧‧Mirror
140‧‧‧Folding unit
200, 300, 400‧‧‧This creative head-up display device
210‧‧‧Light source
220‧‧‧ lens
230‧‧‧ curved mirror
240‧‧‧Folding unit
250‧‧‧ Gravity Sensor
260‧‧‧ Eye Tracking Sensor
270‧‧‧ speedometer
P1‧‧‧ first position
P2‧‧‧ second position
A1, a2, a3, a4, a5, a6‧‧‧ beam travel distance

Figure 1 is a schematic view of a conventional head-up display device. Figure 2 is a schematic diagram of the inventive adjustable reflector. Figure 3 is a schematic view of the adjustable reflector of Figure 2 from another perspective. Figure 4 is a schematic view of a first embodiment of the present head-up display device. Fig. 5 is a view showing the adjustment of the adjustable reflector by the head-up display device of Fig. 4. Figure 6 is a schematic view of a second embodiment of the present head-up display device. Figure 7 is a schematic view of a third embodiment of the present head-up display device. Fig. 8 is a view showing the adjustment of the adjustable reflector by the head-up display device of Fig. 7.

10‧‧‧Adjustable reflector

11‧‧‧Base

12‧‧‧Adjustable frame

12a‧‧‧First end of the mount

12b‧‧‧ adjuster second end

13‧‧‧Reflective components

14‧‧‧Flexible parts

15‧‧‧Control Module

16‧‧‧Drive unit

17‧‧‧Rotating arm

18‧‧‧ cushion

Claims (15)

An adjustable reflector of a head-up display device, comprising: a base; an adjuster having a first end and a second end, the first end being pivotally connected to the base, the second end being opposite to the first Rotating at one end; a reflective member disposed on the mount for reflecting a light beam generated by a light source of the head display device to a stack of image units of the head display device; an elastic member coupled to the mount and the Between the bases, an elastic force is provided to drive the second end of the adjusting frame to rotate toward the base; and a control module includes: a rotating arm against the adjusting frame; and a driving unit for driving the The rotating arm rotates to adjust the angle between the mount and the base. The adjustable reflector of claim 1, further comprising a cushion disposed between the rotating arm and the adjusting frame. The adjustable reflector of claim 1 wherein the resilient member is a torsion spring. The tunable reflector of claim 1 wherein the reflective element is a concave mirror. The tunable reflector of claim 1 wherein the reflective element is a planar mirror. A head-up display device comprising: a light source for generating a light beam; a stack of image units for displaying an image according to the incident light beam; and an adjustable reflector comprising: a base; an adjustment frame having a first one And a second end, the first end is pivotally connected to the base, the second end is rotatable relative to the first end; a reflective element is disposed on the mount for reflecting the light beam generated by the light source to the An elastic member connected between the adjusting frame and the base for providing an elastic force to drive the second end of the adjusting frame to rotate toward the base; a control module comprising: a rotating arm And the driving unit is configured to drive the rotating arm to rotate to adjust an angle between the adjusting frame and the base. The head-up display device of claim 6, wherein the adjustable reflector further comprises a cushion disposed between the rotating arm and the adjusting frame. The head-up display device of claim 6, wherein the elastic member is a torsion spring. The head-up display device of claim 6, wherein the reflective element is a concave mirror. The head-up display device of claim 6, wherein the reflective element is a plane mirror. The head-up display device of claim 10, further comprising a curved mirror for reflecting the light beam generated by the light source to the reflective element. The head-up display device of claim 10, further comprising a lens disposed between the light source and the reflective element for refracting the light beam generated by the light source. The head-up display device of claim 6, further comprising a gravity sensor for sensing an angle between the head-up display device and a horizontal plane, the control module being further configured to sense the gravity sensor The measurement results adjust the angle between the mount and the base. The head-up display device of claim 6, further comprising an eye tracking sensor for sensing a relative position between the head-up display device and a user, the control module being further configured to sense the eyeball according to the eyeball The sensing result of the detector adjusts the angle between the mount and the base. The head-up display device of claim 6, wherein the control module is electrically connected to a speedometer of a vehicle for adjusting an angle between the mount and the base according to the sensing result of the speedometer.