KR100825276B1 - Head up display system for vehicle - Google Patents

Abstract

A head up display device for a vehicle is provided to achieve a large screen for the head up display device by closely mounting the display device to a driver than conventional one. A head up display device for a vehicle comprises an optical source(100), an image source(200), an optical system(300), a foldable combiner(400), and a detaching unit(500). The optical source emits light. The image source has a micro display panel receiving different kind images and outputting the images to meet a driver's need. The optical system outputs images from the image source using light. The foldable combiner reflects images outputted from the optical system to the diver. The foldable combiner is integrally formed with the image source and the optical system. The detachable unit is detachably formed on a sunvisor formed on an outer part of the integral foldable combiner. The detaching unit is shaped as a clip to fix the sunvisor.

Description

Head-up Display Device for Vehicles {HEAD UP DISPLAY SYSTEM FOR VEHICLE}

1A is a schematic diagram of a conventional HUD optical system for a vehicle,

1B is a schematic diagram when a driver of an actual vehicle uses a conventional HUD system,

Figure 1c is a view showing the principle of a conventional HUD system,

2 is a view illustrating a display method using a conventional vehicle head-up display device;

3 is a diagram illustrating an overall configuration diagram and a head-up display device for a small vehicle according to the present invention,

4 is a view showing a schematic diagram and a principle of a foldable vehicle head-up display device mounted on a sun visor as another embodiment according to the present invention;

5 is a view illustrating a display principle of a conventional dashboard type HUD device and a sun visor type HUD system according to the present invention;

6 is a diagram illustrating a schematic view of a slim sun visor type head-up display device as another embodiment of the present invention.

The present invention relates to a head-up display device, and more particularly to a portable vehicle head-up display device that can be easily attached to the sun visor of the vehicle.

Looking at the 21C human living space, it can be divided into three categories: home, workplace, and mobile space. In particular, the vehicle occupies most of the moving space. Thus, as time in a vehicle increases, electronic products used in residential spaces are being developed to be used in a vehicle.

For example, an audio-video system installation, a simple refrigerator, etc. can be mentioned. In addition, as electronic products are developed, they are also applied to fields that help driving. A typical example is car navigation. However, the driver must check the objects in the field of view and drive while the vehicle also checks the driving state.

There are several systems that are being developed as a medium that provides the driver's safety while driving and effectively transmits vehicle driving information and surrounding information to the driver. Among them, the head up display (HUD) is a major concern.

The HUD is a system that provides vehicle driving information or other information within the driver's front line, that is, within the range of the driver's main line of sight while driving a vehicle or aircraft. In the early days, the HUD was developed for attaching to aircraft, especially fighter aircraft.

There is a risk because the vehicle is usually about 55m at a time (about 2 seconds) while keeping the field of view on the instrument panel while driving at approximately 100m / h per hour. One way to reduce this risk is developing a vehicle HUD. The vehicle HUD displays information on the dashboard (speed, mileage, RPM, etc.) on the driver's field of view on the windshield, allowing the driver to easily capture driving information while driving. This allows the driver to drive safely by recognizing important driving information without taking his eyes off the road.

1A is a schematic diagram of a conventional vehicle HUD optical system. As shown in FIG. 1A, when the driver is seated in the driver's seat, the distance between the head is sensed by the ultrasonic sensor 20 installed in the upper part of the driver's head and the ultrasonic sensor 22 installed in the front or rear of the driver. Is applied to the ECU 24.

That is, the ultrasonic sensor 20 installed on the driver's head detects the distance between the ultrasonic sensor 20 and the upper part of the head and applies it to the ECU 24 and is installed at the front or rear of the driver. The ultrasonic sensor 22 detects a distance from the ultrasonic sensor 22 to the front or rear portion of the head and applies it to the ECU 24.

The ECU 24 receiving the distance data sensed by the two ultrasonic sensors 20 and 22 determines the position of the driver's gaze based on the two distance data. That is, it determines which position the driver's line of sight height is located and where the front and rear positions are located to determine the position at which the reflected light reflected from the projector 14 should be displayed.

When the position of the driver's gaze is determined, the ECU 24 calculates the incident angle of the projector 14 so that the reflected light projected by the projector 14 is displayed at the position determined by the above-described process. That is, the reflected light projected by the projector 14 is reflected by the combiner 12 of the windshield 10 to calculate the angle of incidence of the projector 14 which can be normally transmitted to the driver's eyes.

After determining the current position of the projector 14, a drive signal is output to the motor driver 18 so as to adjust the incidence angle of the projector 14 to the calculated incidence angle, thereby driving the motor 16. Through this, the incident angle of the projector 14 may be adjusted to adjust the position of the reflected light displayed on the combiner 12 of the windshield 10 according to the driver's gaze.

FIG. 1B is a schematic diagram of a case where a driver of an actual vehicle uses a conventional HUD system, and FIG. 1C is a diagram illustrating the principle of a conventional HUD system.

As illustrated in FIGS. 1B and 1C, the driver may view a two-dimensional image including various information from an image source from a certain distance of the driving field through a combiner of a mirror and a windshield.

In other words, the driving information transmitted from the vehicle's internal system is converted into displayable data, and the data is reflected on the mirror and projected on the windshield to form a virtual image in the driver's field of view to provide the driver with driving information. Will be provided.

2 is a diagram illustrating a display method using a conventional vehicle head-up display device.

As shown in FIG. 2, there are many ways to develop the HUD system in a vehicle. Among these, the currently developed and used method is the projection method. In the case of the direct reflection method, the system itself is bulky, which makes it difficult to mount it in front of the handle.

In addition, due to the limitation of the distance adjustment with the combiner for displaying the virtual image through the driver's field of view, the screen size cannot be increased, and the image quality is also degraded.

The technical problem to be solved by the present invention for solving the above problems is to reduce the weight of the device, ride on the sun visor. Not only the attachment is easy, but also the size of the device is much reduced to provide a vehicle head-up display device that is advantageous in miniaturization and low cost.

In addition, it can be installed in all models, can be used as a portable and can be mounted in close proximity to the driver to implement a large screen, and to implement a high-quality screen.

In order to solve the above problems, a first feature according to the present invention is a light source for generating illumination light; An image source having a micro display panel for receiving and outputting various image information images required by a driver; An optical system for outputting an image from an image source through the illumination light; A foldable combiner configured to reflect an image output from the optical system in a driver's direction and be integrated with the image source and the optical system; And the detachable detachable means on a sun visor of a vehicle on a part of the outside of the integrated structure.

Here, the detachable means is preferably in the form of a clip to secure the sun visor, the integrated structure is a hexahedron, a mirror is formed on the inner surface so that the light is reflected and proceeds in the hexahedron, the image It is also preferred that the circle and the optical system are formed parallel to the inner surface of the cube.

In addition, it is preferable that a tinting treatment is performed on the front or the rear of the combiner, and further comprising a three-dimensional image filter for converting the image output from the image source to a three-dimensional stereoscopic image, the light source is a laser light source Is also preferred.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a diagram illustrating an overall configuration diagram and a head-up display device for a small vehicle according to the present invention.

As shown in FIG. 3, if the driver can display various information such as vehicle driving information, geographic information through navigation, and various instrument panel information such as the speed of the vehicle within a range not departing from the driving field of view, As a driver, there is an advantage that the vehicle operation can be quite stable.

As described above, the conventional HUD system for a vehicle has been in the future as an in-dash type or a portable type on a dashboard in front of a handle in consideration of a driver's viewing angle. However, the driver's focus is fixed on the mirror because the driver sees the virtual image through a real mirror with reflectance. In general, the distance between the driver and the mirror is up to 80 cm. Depending on the individual differences in vision, the virtual image may or may not be visible. In order to eliminate this inconvenience, as shown in FIG. 2, the present invention secures a portable HUD system to a car's sun visor to reduce the distance between the eye and the HUD mirror, thereby improving readability and improving screen image. Has a merit that the large screen can be implemented.

4 is a view showing a schematic diagram and principle of a foldable vehicle head-up display device mounted on a sun visor according to another embodiment of the present invention. As shown in FIG. 4, it is a system provided with the foldable combiner 400 in which the combiner 400 was integrated. Although the micro display panel 200 reflects the information image directly to the combiner to display the image as a virtual image at a certain distance from the driver, it is easy to the sun visor 150 of the vehicle as shown in FIGS. 3 and 4. The detachable means 500 in the form of a clip so as to be removable.

That is, the micro display panel 200 generates light from the red, green, and blue light sources 100 that generate illumination light, and the generated light generates a video image including various information required by an actual driver. The reflected or transmitted image information is displayed through the combiner 400 to display the virtual 3D image 600 information at a predetermined distance in front of the driver's field of view.

In addition, the embodiment of the present invention shown in FIG. 4 does not specifically limit its structural shape, so that each optical element may be disposed in accordance with the miniaturization of the system to be pursued by the present invention.

As such, the present invention is a portable head-up display (HUD) device including a micro display panel 200, a mirror, a combiner 400, and a removable device 500, as shown in FIG. Easily detachable from the sun visor 400, the driver can form a virtual image 600 at a close distance from the field of view. When the head-up display device can be configured near the driver's field of view, the virtual image 600 can be made larger and closer, and the resolution of the image can be much higher.

In addition, the light source 100 may be used as an illumination light source, UHP Lamp, LED and laser. It can be used as a suitable light source according to the system's specification and design, and of course, the HUD system can select various light sources according to its characteristics.

In addition, the micro display panel 200 may be used as an LCD, LOCS, DMD, or the like. That is, by using such a flat panel display device, not only can the system configuration efficiency be improved, the system can be easily miniaturized and slimmed, but also a projection optical system that reflects or transmits various image information required by the driver is realized. It is also easy to do.

In addition, it is desirable to have a three-dimensional image filter between the micro display panel as an image source and the optical system, which is equipped with a three-dimensional image filter to realize the image information displayed to the driver in three dimensions to know the three-dimensional information needed by the driver. It is possible to provide a better display information to the driver, and to solve the problem of obscuring the driver's field of vision due to the two-dimensional image of a lot of information (not shown).

In addition, it is preferable that the above-mentioned combiner 400 is treated with a tinting 410, which folds the sun visor and mounts the HUD device according to the present invention in the form of a clip, so that the driver's driving field of view is reduced. Because it interferes, by applying a tinting 410 to one surface of the combiner 400 to replace the role of the sun visor, it is possible to secure the driving field without glare from sunlight.

And, as shown in Figure 4, the integrated portable head-up display device has a structure that can be easily removable in the form of a clip on the sun visor 150, it is possible to selectively use the HUD device according to the needs of the driver. In addition, the HUD system is mounted directly on the sun visor to adjust the sun visor according to the driver's vision, that is, the eye height, so that the virtual image is adjusted so as not to deviate from the driver's field of vision, thereby greatly assisting in safe driving.

FIG. 5 is a view illustrating a display principle of a conventional dashboard type HUD device and a sun visor type HUD system according to the present invention. As shown in FIG. 5, the virtual image transmits information to the driver's eyes through the transflective mirror, that is, the combiner. Due to the characteristics of the same optical system, the viewing angle of the virtual image is smaller than the viewing angle of the semi-transparent mirror, and the screen size of the virtual image is perceived as the image size projected onto the semi-transmissive mirror. For example, when projecting a virtual image of 8 inch size at a distance of 3 meters, such as a dashboard type, and comparing the same 8 inch size image at a distance of 1 m of the sun visor type according to the present invention, a large screen can be realized in the same optical system. do.

In addition, due to the space constraints in the case of the dash board (Dash Board) in front of the driver's seat is limited translucent mirror size, the sun visor type according to the present invention is not limited to the mirror size. Therefore, the size of the semi-permeable mirror can be increased, thereby increasing the size of the virtual image.

6 is a diagram illustrating a schematic view of a slim sun visor type head-up display device as another embodiment of the present invention.

The figure shown in FIG. 6 exemplifies only the slim-type head-up display device without the detachment means with the sun visor. Referring to the drawings, a slim vehicle head-up display system includes a light source 100, an image source 200, and an optical system 300 composed of a mirror and a combiner. At this time, the light source 100, the image source 200, and the optical system 300 is installed in the hexagonal housing, the structure of the folder-shaped combiner 400 is integrally formed. However, in the drawings, the mirrors 312 in the optical system 300 are shown to be installed in parallel to each other in a direction opposite to each other, but is not limited thereto, and the positions of the mirrors 312 may be variously changed.

Here, the image source 200 may be connected to an external display device (for example, a liquid crystal display (LCD), a digital micromirror device (DMD), etc.) through a connection terminal (not shown), in which case the connection terminal In addition to receiving and outputting an image signal from an external display device through, it may be implemented by a display device such as LCD, DMD, etc. may be directly output.

The light source 100 outputs light for reflecting or transmitting the image output by the image source 200. The image reflected or transmitted by the light source 100 is sequentially reflected and outputted while changing the reflection angle in the direction of the combiner 400 by the reflection mirror or the optical system 300 in the housing. The virtual image is displayed to the driver through the binner 400.

Thus providing a slim HUD device according to the invention, the weight of the device is much reduced, so that the sun visor. Not only is it easy to attach, but the size of the device is much reduced, which is advantageous in miniaturization and low cost.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

Providing the sun visor type vehicle head-up display device according to the present invention, the weight of the device is much reduced, so that the sun visor. Not only is it easy to attach, but the size of the device is much reduced, which is advantageous in miniaturization and low cost.

In addition, it can be installed in all models, can be used as a portable and can be mounted in close proximity to the driver to implement a large screen, it is possible to implement a high-quality screen.

Claims (6)

A light source generating illumination light; An image source having a micro display panel for receiving and outputting various image information images required by a driver; An optical system for outputting an image from an image source through the illumination light; A foldable combiner configured to reflect an image output from the optical system in a driver's direction and be integrated with the image source and the optical system; And And a detachable detachable means to a sun visor of a vehicle on a part of the outer side of the integrated structure. The method of claim 1, The detachable means is a head-up display device for a small vehicle, characterized in that the clip form that can be fixed to the sun visor. The method of claim 1, The integrated structure is a hexahedron, the mirror is formed on the inner surface so that the light is reflected inside the hexahedron proceeds, the image source and the optical system is characterized in that formed in parallel to the inner surface of the hexahedron Display device. The method according to any one of claims 1 to 3, Head-up display device for a small vehicle, characterized in that the tinting process on the front or rear of the combiner. The method according to any one of claims 1 to 3, And a stereoscopic image filter for converting an image output from the image source into a 3D stereoscopic image. The method according to any one of claims 1 to 3, And the light source is a laser light source.

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