TW201823066A - Head-up display device with multiple displays with a second optical path module to receive the external image light source for obtaining a longer optical path to reduce the driver's dizzy feeling visually and obtain the best visual effect - Google Patents

Abstract

The present invention relates to a head-up display with multiple displays, which comprises a main body, a first optical path module, and a second optical path module. The first optical path module projects the image at a closer distance position in front of driver's eyes. The second optical path module receives the external image light source for obtaining a longer optical path, and projects the image at a farther distance, thereby reducing dizzy feeling visually and obtaining the best visual effect for user and ,furthermore, the driving safety is improved.

Description

   Multi-display head-up display device   

The present invention relates to a multi-display head-up display device, and more particularly to a head-up display device that can reduce the driver's visual dizziness. Position, and the use of a second optical path module to receive external image light sources to obtain a relatively long optical path, and the image can be projected over a long distance, thereby reducing the driver's visual dizziness and obtaining an optimal vision Effect, thereby improving driving safety.

The head-up display technology used in today's automobiles is not as complicated as the head-up display on airplanes; it is an optical system that generally consists of a projector and a stack of image mirrors. The projector is composed of a signal light source, a The projection lens and other optical components are composed of a signal light source of the projector, which is composed of an LCD liquid crystal display or a CRT cathode ray tube, and the like. The light is emitted from the signal light source, and then the superimposed image projected on the glass through the projector. Mirror (or on a special transparent screen), and then the text or image is displayed by the superimposed mirror.

As shown in the first figure, the head-up display of the cited case US7936518 represents a schematic diagram. The head-up display includes an infrared emitting unit 5A to emit an infrared light to a user DA; a mirror element 3A to reflect from a concave mirror 4A. A display 2A emits a visible light LA and transmits the infrared rays reflected by the user DA and the concave mirror 4A; a plurality of imaging units 6A and 7A face the concave mirror 4A to sense infrared rays and each image All come from different directions; and an image processing unit 8A, the concave mirror 4A projects visible light LA on a windshield plate WA, and further virtually reflects VA to the eyes of the user DA.

Based on the object distance in front of the concave mirror multiplied by the concave mirror's magnification is the distance of the virtual image imaging, but the distance of the virtual image imaging needs to be far: (1) to increase the magnification of the concave mirror, but due to the process limitations of the concave mirror, the ideal lens cannot be achieved Make the virtual images received by both eyes exactly the same, so the higher the magnification, the larger the imaging error, so that the errors generated by the two eyes receiving the image will cause dizziness in the viewer, for viewing comfort Therefore, the magnification is usually controlled within seven times; (2) It is necessary to lengthen the distance between the light path of the object, but because the head-up display is usually set inside the instrument panel in front of the driver, its space is limited. Additional reflectors are designed to make the light path reflect back and forth to increase the object distance. However, due to the limitation of the length, the virtual image distance of the head-up display can only be 2.5 meters away from the driving eye.

The car-by-car navigation function is mainly to guide the driver to switch to the correct lane or warn the distance in front of the vehicle. In order to play the navigation function, the driver often shifts his attention from the road to the head-up display, which is obviously not a good idea. It ’s better to stick the navigation guide directly on the road or on the tail of the front car to be warned, so that the driver does not need to shift his attention, which is the best way to put information on the driver. The key is to lengthen the display distance of the head-up display and stick it directly on the road or on the tail of the front car to be warned. However, it is an important subject to be broken.

In order to solve the above-mentioned technical bottlenecks, the industry has continuously proposed various technical solutions. Related technologies can refer to TW I443377, TW I506299, TW 201624101, CN 201610134321, TW 201410829066, CN201510649759, CN201520418145, and TW I446001.

Although the above pre-patent cases have disclosed the application technology of related head-up displays, there are generally some defects in their use:

1. Taking reference to the aforementioned pre-patent cases, some use a single projection device to project a straight cut screen, but the disadvantage is that the standard distance image projected is too short, and the driver is prone to visual dizziness when watching, Affects the safety of driving.

2. Although some pre-patent cases can project standard distance images and longer distance images through two or more projection devices or more cut screens, most of the locations where multiple projection devices are installed are Located in the same position, and the images provided are mostly horizontal cut pictures on the same horizontal plane, and there is no vertical cut picture, so it is not easy to accurately paste the navigation guide symbols directly on the road or on the road The warning on the front of the car makes the navigation guidance effect greatly reduced.

In view of the lack of the above habits, the inventor of this case has completed the multi-display head-up display device of the present invention after numerous studies and improvements. That is, the purpose of the present invention is to provide a head-up display device that can reduce the visual dizziness of the driver It uses a first optical path module to project an image at a short distance in front of the driver's eyes, and uses a second optical path module to receive an external image light source to obtain a relatively long optical path and can project the image. Drive a longer distance to reduce the driver's visual dizziness, so as to obtain an optimal visual effect, thereby improving driving safety.

In order to achieve the above-mentioned object of the present invention, the multi-display head-up display device of the present invention includes: a main body provided with an accommodation space and an opening therein; a first optical path module disposed in the accommodation space, the first An optical path module includes a first optical machine and a first concave mirror, the first concave mirror reflects and enlarges the picture of the first optical machine, and projects upward on a windshield through the opening; a second optical path module It is disposed in the accommodating space, and the second optical path module includes a second concave mirror, which reflects and amplifies the image light source from the outside, and projects upward through the opening onto the windshield; The first optical path module projects an image at a relatively short distance in front of the driver's eye. The second optical path module receives an external image light source, and the optical path length of the external image light source is determined by the second concave mirror. Since the distance from the external image light source is not limited to the size of the main body, a relatively long light path can be obtained, and a distance that can project an image farther is its characteristic.

The above-mentioned first optical path module further includes a first reflecting mirror, which is disposed in the accommodating space to reflect an image projected by the first optical machine.

The first optical path module further includes a first rotation axis, and the first concave mirror is fixed to the first rotation axis, and the position of the image projected on the windshield is adjusted by the rotation of the first rotation axis.

The second optical path module further includes a second rotation axis, and the second concave mirror is fixed to the second rotation axis, and the position of the image projected on the windshield is adjusted by the rotation of the second rotation axis.

The second optical path module further includes a second optical machine, and the second optical machine is an external image light source.

The above-mentioned second light machine further includes a second reflector, which is disposed in front of the second light machine to reflect an image projected by the second light machine.

The above-mentioned second optical machine is disposed at a junction between a ceiling of a vehicle and the windshield.

The above-mentioned second optical machine is disposed on a ceiling of a vehicle.

The multi-display head-up display device of the present invention further includes a reflective film, and the reflective film is disposed on the windshield.

The main body described above is installed on the dashboard of a vehicle.

The multi-display head-up display device of the present invention mainly uses a first light path formed by the first light path module 2 to project an image at a short distance in front of the driver's eyes to form a first virtual image; and the second light path The module receives an external image light source to form a second light path, so that it is not limited to the size of the subject to obtain a relatively long light path, and can project the image into a second virtual image at a longer distance.

The first virtual image and the second virtual image respectively display different information. The first virtual image displays necessary text and images for a long time, and the second virtual image displays a turn (blinking) at a horizontal display angle for a short (blinking) display of a turn. Or the danger warning symbol and fit the reality, because the imaging of the second virtual image is displayed in a flickering manner, the imaging time can be reduced, thereby reducing the driver's visual dizziness and obtaining an optimal visual environment To improve driving safety.

     [Learning]     

2A‧‧‧Display

3A‧‧‧Mirror Element

4A‧‧‧Concave mirror

5A‧‧‧Infrared emitting unit

6A, 7A‧‧‧‧ Imaging Unit

8A‧‧‧Image Processing Unit

DA‧‧‧ Users

LA‧‧‧Visible light

VA‧‧‧Virtual Imaging

WA‧‧‧ Windshield

     〔this invention〕     

1‧‧‧ main body

11‧‧‧ accommodation space

12‧‧‧ opening

2‧‧‧The first optical path module

21‧‧‧First light machine

22‧‧‧The first concave mirror

23‧‧‧first mirror

24‧‧‧first rotation axis

3‧‧‧Second Optical Module

31‧‧‧Second concave mirror

32‧‧‧second rotation axis

33‧‧‧Second Optical Machine

34‧‧‧Second Mirror

4‧‧‧Reflective film

B‧‧‧ dashboard

C‧‧‧ ceiling

D1‧‧‧First virtual image

D2‧‧‧Second virtual image

E‧‧‧ eyes

L1‧‧‧First light path

L2‧‧‧Second Optical Path

W‧‧‧ windshield

The first figure is a schematic diagram of a conventional head-up display device.

The second figure is a schematic diagram of the first embodiment of the present invention.

The third figure is a schematic diagram of the second embodiment of the present invention.

The fourth figure is a schematic diagram of another embodiment of the invention in which a reflective film is provided on the windshield.

Please refer to the second figure, which is a first embodiment of the multi-display head-up display device according to the present invention, which includes: a main body 1 with an accommodation space 11 and an opening 12 inside; a first optical path module 2 The first optical path module 2 includes a first optical machine 21 and a first concave mirror 22, and the first optical path 21 projects a picture to a first optical path L1. The concave mirror 22 reflects the first optical path L1 and enlarges the picture of the first optical machine 21. The first optical path L1 is projected upward on a windshield W through the opening 12; a second optical path module 3 is disposed on the In the accommodation space 11, the second optical path module 3 includes a second concave mirror 31. The second concave mirror 31 reflects and amplifies a second optical path L2 from an external image light source. The second optical path L2 is projected upward through the opening 12. On the windshield W; with the composition of the above structure, the principle of virtual image imaging is imaging through a concave mirror, so the imaging formula of the concave mirror: 1 / p + 1 / q = 1 / f, f: focal length, q: object distance , P: image distance, the general magnification can enlarge the virtual image, and the same ratio can also make the virtual image As the distance increases, using the magnification principle of the first concave mirror 22 and an appropriate magnification N, the imaging distance on the first optical path L1 can be enlarged by the distance from the first optical machine 21 to the first concave mirror 22 Magnification, the size of the image is also magnified N times. Because too large magnification will make the driver feel dizzy visually, the magnification is usually set below seven times, and five times is the most appropriate. The imaging distance is only about 2.2 meters. The first optical path module 2 projects an image at a short distance in front of the driver's eye E to form a first virtual image D1. The second optical path module 3 receives an external image light source to form a second optical path. The optical path length of the image light source is determined by the distance between the second concave mirror 31 and the external image light source, so it is not limited to the size of the main body 1, so a longer optical path can be obtained, which is matched with the higher magnification of the second concave mirror 31 (12 ~ 15 times), so it can reach the required distance (more than seven meters), and then use the setting of imaging flicker to reduce the imaging time, to reduce the driver's visual dizziness, and to project the image far away distance A second virtual image D2 are its characteristics.

Since the first virtual image D1 and the second virtual image D2 respectively display different information, the first virtual image D1 displays necessary text and images for a long time, and the second virtual image D2 briefly (blinks) at a horizontal display angle. ) Displays a turning or danger warning symbol and fits the reality. Since the imaging of the second virtual image D2 is displayed in a flickering manner, the imaging time can be reduced, thereby reducing the driver's visual dizziness.

The above-mentioned first optical path module 2 further includes a first reflecting mirror 23, which is disposed in the accommodating space 11, thereby increasing the distance of the first optical path L1 and reflecting the projection of the first optical machine 21. Out image.

The above-mentioned first optical path module 2 further includes a first rotation axis 24, and the first concave mirror 22 is fixed to the first rotation axis 24. Through the rotation of the first rotation axis 24, the projection on the windshield can be adjusted The position of the image on W.

The above-mentioned second optical path module 3 further includes a second rotation shaft 32, and the second concave mirror 31 is fixed to the second rotation shaft 32. Through the rotation of the second rotation shaft 32, the projection on the windshield can be adjusted The position of the image on W.

The above-mentioned second optical path module 3 further includes a second optical machine 33, which is disposed at the junction of the roof C of a vehicle and the windshield W. The second optical machine 33 is an external Image light source.

As shown in the third figure, this is a second embodiment of the multi-display head-up display device of the present invention, wherein the second light machine 33 is disposed on the ceiling C of the vehicle, and the second light machine 33 further includes a second reflection Mirror 34, the second reflecting mirror 34 is disposed in front of the second light machine 33 to reflect the image projected by the second light machine 33, so that the total height of the second light machine 33 can be reduced, and the second The light machine 33 is flat against the ceiling C of the vehicle.

The multi-display head-up display device 1 of the present invention further includes a reflective film 4 (as shown in the second figure). The reflective film 4 is disposed on the windshield W, and the reflective film 4 may be disposed on the inner side of the windshield W. (As shown in the second figure) or the windshield W (as shown in the fourth figure), so that the reflectance of the first virtual image D1 and the second virtual image D2 can be improved.

The above-mentioned main body 1 is provided in the instrument panel B of a vehicle, and the main body 1 may be disposed in the instrument panel B (not shown) of the vehicle or embedded in the instrument panel B of the vehicle.

The function of the first optical path module 2 of the present invention is equivalent to that of a conventional head-up display. It projects an image at a short distance in front of the driver's eyes. The second optical path module 3 receives an external image light source, and its optical path The length is determined by the distance between the second concave mirror 31 and the external image light source. Since it is not limited to the size of the main body 1, a longer light path can be obtained, and the image can be projected at a longer distance. This is the feature of the present invention. .

In summary, the multi-display head-up display device of the present invention uses the first optical path formed by the first optical path module 2 to project an image at a relatively short distance in front of the driver's eyes, and the second optical path module. The formed second light path receives an external image light source, so that it is not limited to the size of the subject to obtain a relatively long light path, and can project the image over a long distance to reduce the driver's visual dizziness. , And obtain an optimal visual environment, thereby improving driving safety, so as to effectively solve the lack of existing head-up displays, and the technical means used in the present invention is not available in the prior art, so the invention has the novelty and progressive elements of the patent By.

The specific embodiments provided in the content of the present invention are only used to facilitate the description of the technical content of the present invention, rather than to limit the present invention to the above embodiments in a narrow sense. In the case of the scope, the implementation of various changes still belongs to the scope of the present invention.

Claims (10)

    A multi-display head-up display device includes: a main body provided with an accommodation space and an opening therein; a first optical path module disposed in the accommodation space, the first optical path module including a first optical machine And a first concave mirror, the first concave mirror reflects and enlarges the picture of the first optical machine, and projects upward on a windshield through the opening; a second optical path module is disposed in the accommodation space, and The second optical path module includes a second concave mirror, which reflects and amplifies an image light source from the outside, and projects upward on the windshield through the opening; the first optical path module is composed of the above structure. The image is projected at a short distance in front of the driver's eyes. The second optical path module receives an external image light source. The optical path length of the external image light source is determined by the distance between the second concave mirror and the external image light source. It is limited to the size of the subject to obtain a relatively long light path, and to project the image over a long distance is its characteristic.         The multi-display head-up display device according to item 1 of the scope of the patent application, wherein the first optical path module further includes a first reflector, the first reflector is disposed in the accommodation space to reflect the first light machine Projected image.         The multi-display head-up display device according to item 1 of the scope of patent application, wherein the first optical path module further includes a first rotation axis, and the first concave mirror is fixed to the first rotation axis, and passes through the first rotation axis. Rotate to adjust the position of the image projected on the windshield.         The multi-display head-up display device according to item 1 of the scope of the patent application, wherein the second optical path module further includes a second rotation axis, and the second concave mirror is fixed to the second rotation axis, and passes through the second rotation axis. Rotate to adjust the position of the image projected on the windshield.         The multi-display head-up display device according to item 1 of the scope of patent application, wherein the second light path module further includes a second light machine, and the second light machine is an external image light source.         The multi-display head-up display device according to item 5 of the scope of patent application, wherein the second light machine further includes a second reflector, and the second reflector is disposed in front of the second light machine to reflect the second light The image projected by the camera.         The multi-display head-up display device according to item 5 of the scope of patent application, wherein the second light machine is disposed at a junction of a ceiling of a vehicle and the windshield.         The multi-display head-up display device according to item 5 of the scope of patent application, wherein the second light machine is disposed on a ceiling of a vehicle.         The multi-display head-up display device described in item 1 of the patent application scope further includes a reflective film, and the reflective film is disposed on the windshield.         The multi-display head-up display device according to item 1 of the scope of patent application, wherein the main body is disposed on a dashboard of a vehicle.