KR20080045849A - Head up display arraratus in vehicle - Google Patents

Abstract

A head up display device for a vehicle is provided to prevent dusts from permeating into the display device by enclosing the display device when the display device is not used. A head up display device for a vehicle includes an HUD(Head Up Display) optical system(210), a housing unit(220), and a sliding cover member(230). The HUD optical system generates a virtual image in front of a driver and provides image information. The HUD optical system is installed in the housing unit. A guide rail is formed on the housing unit. The sliding cover member is moved along the guide rail and opens/closes the housing unit. The sliding cover member includes a sliding cover(231), a cover gear portion(232), and a driving unit(233). The sliding cover is moved along the guide rail. The cover gear portion is connected to a portion of the sliding cover and moves the sliding cover along the guide rail. The driving unit provides operational power to the cover gear portion.

Description

Head Up Display Arraratus in Vehicle

1 shows a schematic diagram of a typical reflective head-up display device.

2 is a schematic view showing an embodiment of a vehicle head up display apparatus according to the present invention.

3 schematically shows the configuration of the HUD optical system 210.

Figure 4 shows another embodiment of a head-up display device for a vehicle according to the present invention.

5 illustrates another embodiment of a vehicle head up display apparatus according to the present invention.

6A to 6E illustrate an operation mechanism of the head up display apparatus for a vehicle according to the embodiment of FIG. 5.

<Description of Symbols for Major Parts of Drawings>

210: HUD optical system 230: sliding cover portion

211: light source 231: sliding cover

213: light valve 232: cover gear portion

215: magnifying lens 233: driving part

217: semi-transparent mirror

220: housing part

221: guide rail

The present invention relates to a head up display device for a vehicle.

There are several systems that are being developed as a medium to effectively convey vehicle driving information and surrounding situation information to the driver while driving. Head up display (HUD) has become a major concern. The head-up display (hereinafter referred to as 'HUD') is a system that provides vehicle driving information or other information within the range of the driver's front line, ie, the driver's line of sight, while driving a vehicle or aircraft.

1 shows a schematic diagram of a typical reflective head-up display device. The head-up display device reflects the output image of the light source 11 to the reflection mirror 12 and projects the image on the windshield glass 13 serving as a combiner, so that the driver may pass a virtual image outside the windshield 13. 14) to provide driving information to the driver. The head-up display device as described above is generally mounted to be recessed to a dashboard in front of the driver's seat as shown in FIG. 1 or mounted on the dashboard.

In the conventional head-up display device as described above, the performance of the light emitting unit and the reflecting lens is degraded due to the dust in the vehicle, and thus the brightness, contrast ratio, and color reproducibility are remarkably decreased.

The technical problem to be achieved by the present invention is to provide a head-up display device that prevents the optical performance degradation caused by the dust and foreign matter in the conventional head-up display.

In order to achieve the above object, the vehicle head-up display device according to the present invention is a HUD optical system for providing a virtual image in front of the driver to provide image information, the housing unit is provided with the HUD optical system, the guide rail is formed, the housing unit Moving along the guide rail formed in, characterized in that it comprises a sliding cover portion for opening and closing the housing portion.

The sliding cover portion is characterized in that it comprises a sliding cover moving along the guide rail formed in the housing portion and a cover conveying device for moving the sliding cover. The cover conveying apparatus may be configured to include a cover gear part connected to a part of the sliding cover to move the sliding cover along the guide rail, and a driving part to provide power to the cover gear part.

The vehicle head-up display device may further include an optical system transfer device for moving the HUD optical system up and down. The optical system transfer apparatus may include a crank shaft vertically connected to a lower portion of the HUP optical apparatus, an optical system gear unit for raising or lowering the cranks shaft, and a driving unit for providing power to the optical system gear unit.

The head-up display device may further include a transmission unit for selectively connecting one of the cover gear unit and the optical system gear unit to the driving unit according to a control signal input from the outside.

The HUD optical system is a light valve for selectively outputting light output from the light source according to a light source and an image signal input from the outside, and reflects the light output through the light valve to the driver's eyes to form a virtual image in front of the driver. Which may consist of a transflective mirror. Preferably, an enlarged lens is further provided between the light valve and the transflective mirror to enlarge and output the light output through the light valve. The transflective mirror is preferably in the form of a concave mirror. The transflective mirror is preferably folded when the sliding cover is closed and unfolded when the sliding cover is opened.

The HUD optical system includes a light source for selectively outputting light output from the light source according to a light source, an image signal input from the outside, and an enlarged lens for expanding the light output through the light valve and outputting the light to the windshield of the vehicle. The light reflected by the windshield is incident to the driver's eyes, characterized in that to form a virtual image in front of the driver.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

Hereinafter, the configuration and operation of the present invention will be described in detail through embodiments of a vehicle head-up display device according to the present invention. However, the present invention is not intended to be limited to the specific forms disclosed, but rather, the present invention is defined by the claims. It includes all modifications, equivalents, and substitutes that are consistent with the spirit of the present invention. In addition, the figures in the drawings are exaggerated to help understand the invention.

2 is a schematic view showing an embodiment of a vehicle head up display apparatus according to the present invention.

As shown in FIG. 2, the head-up display device according to the present invention includes a housing unit in which a HUD optical system 210 is installed in front of a driver to provide image information, and the HUD optical system 210 is installed and a guide rail is formed. 220 and a sliding cover portion 230 which moves along the guide rail 221 formed in the housing portion 220 and opens and closes the housing portion 220.

In particular, the present invention is to prevent the performance degradation of the head-up display device due to the foreign matter such as dust by sealing the HUD optical system with the housing portion 220 and the sliding cover portion 230 when not using the head-up display device. It has its features.

The HUD optical system 210 provides image information by creating a virtual image in front of the driver. 3 schematically shows the configuration of the HUD optical system 210. The HUD optical system 210 may include a light valve 213 for selectively outputting light output from the light source 211 according to a light source 211, an image signal input from the outside, and light output through the light valve 213. An enlarged lens 215 for enlarging the lens and a semi-transparent mirror 217 for reflecting the light output from the enlarged lens 215 to the driver's eyes to form a virtual image in front of the driver. In this case, the magnifying lens 215 may be omitted in some cases.

The light valve 213 receives an image signal of various information such as a vehicle speed and driving information from the outside, and accordingly, an aperture-type valve provided for each pixel of the image is opened or closed to output an image. The light output from the light valve 213 is enlarged by the magnifying lens 215 and reflected by the transflective mirror 217. The transflective mirror 217 takes the form of a concave mirror and reflects a predetermined light output from the light source to the driver's eyes. The light reflected by the driver's eye forms a virtual image in front of the driver as shown in FIG. 1 to provide image information. The transflective mirror 217 reflects the light output from the light valve 213 and also transmits the light incident from the opposite side of the light source, thereby allowing the driver to secure not only an image signal but also a driver's front field of view. Since the image output algorithm of the HUD optical system 210 is based on the same operation principle as a general head-up display, a detailed description thereof will be omitted.

The semi-transparent mirror 217 has a configuration that can be folded to minimize the volume when not used as shown in FIG. The transflective mirror 217 may be driven by a motor, and in particular, the transflective mirror is folded when the sliding cover 231 is closed in association with the sliding cover part, and the transflective mirror is opened when the sliding cover 231 is opened. By spreading it is possible to minimize the space of the housing portion 220.

The housing unit 220 is formed on a dashboard of the vehicle. The HUD optical system 210 is installed at the bottom of the housing part 220, and a guide line 221 to which the sliding cover 231 is movable is symmetrically formed at the upper side of the housing part. When the sliding cover 231 is closed, the inside of the housing part is formed to be sealed to prevent the inflow of outside air.

The sliding cover part 230 is connected to a sliding cover 231 moving along a guide rail 221 formed in the housing part 220 and a part of the sliding cover 231 and thus the sliding cover 231. The cover gear part 232 which moves along the guide rail 221, and the drive part 233 which supplies power to the cover gear part 232 are comprised. As an embodiment of the present invention, a tooth groove is formed along one side or both sides of the sliding cover, and teeth are formed at the end of the cover gear part 232 to be engaged with each other. The cover gear unit opens or closes the sliding cover 231 by using the power of the driving unit 233. When the sliding cover is closed, as described above, the semi-transparent mirror 217 of the HUD optical system is folded, and then the sliding cover 231 is closed to seal the housing part.

Figure 4 shows another embodiment of a head-up display device for a vehicle according to the present invention. The embodiment according to FIG. 4 includes an optical system transporting apparatus for moving the HUD optical system 210 up and down in the embodiment of FIG. 2, so that the height of the HUD optical system can be adjusted according to the driver's eye level, thereby providing the user with more control. It provides convenient and clear picture quality information.

Referring to FIG. 4, the optical system conveying apparatus includes a crank shaft 241 vertically connected to a lower portion of the HUD optical system, an optical system gear unit 243 for raising or lowering the crank shaft 241, and the optical system gear 243. It is composed of a drive unit 245 for providing power to the.

The operation principle of the HUD optical system 210 and the sliding cover 230 is the same as described in FIG. In this embodiment, a crank shaft is formed below the HUD optical system 210. As shown in FIG. 4, the crankshaft 241 may be connected to the bottom of the housing 220 in which the HUD optical system is installed so that the bottom of the HUD optical system 210 and the housing may be moved along the side of the housing 220. In addition, by forming a predetermined hole in the bottom of the housing portion 220 so that the crank shaft 241 is directly connected to the lower portion of the HUD optical system 210 to move only the HUD optical system 210 up and down separately from the housing portion 220. You can. A lower portion of the crank shaft 241 is formed to support it (not shown).

 The operation of the transflective mirror 217 of the HUD optical system and the operation of the optical transport device may operate in conjunction. That is, when the optical transport device raises the HUD optical system 210, the transflective mirror 217 is extended, and when the optical transport device descends, the transflective mirror 217 is folded to reduce the operation time of the head-up display device.

5 illustrates another embodiment of a vehicle head up display apparatus according to the present invention. In the embodiment of FIG. 4, the transmission unit 250 selectively connects one of the cover gear unit 232 or the optical system gear unit 243 with the driving unit 260 according to an external control signal. In addition, the position of the sliding cover 231 and the HUD optical system 210 is moved by using one driver 260.

The operation principle of the HUD optical system 210, the sliding cover unit 230, and the optical system transporting device is the same as described above.

The transmission unit 250 selectively transmits the power of the driving unit 260 to the cover gear unit 230 or the optical system gear unit 243 according to a control signal input from the outside, thereby using one driving unit 260. To move the sliding cover 231 and the HUD optical system 210. This not only reduces costs but also reduces the overall volume of the head-up display device.

6A to 6E illustrate an operation mechanism of the head up display apparatus for a vehicle according to the embodiment of FIG. 5.

6A illustrates the state when the head-up display device is not used. As shown, the HUD optical system 210 is mounted inside the housing part in a state in which the transflective mirror 217 is folded, and the sliding cover 231 is covered thereon to seal the housing part.

When the operation signal is input to the head-up display device, the sliding cover 231 is opened as shown in FIG. 6B. In this case, the transmission unit 250 connects the driving unit 260 to the cover gear unit 232, and the cover gear unit 232 opens the sliding cover 231 by receiving power from the driving unit 260. Thereafter, the transflective mirror 217 of the HUD optical system 210 is opened as shown in FIG. 6C. Thereafter, as shown in FIG. 6D, the HUD optical system moves upward to adjust the height according to the driver's eye level. At this time, the transmission unit 250 connects the driving unit 260 and the optical system gear unit 243, and the optical system gear unit 243 receives the power of the driving unit 260 to raise the crankshaft 241 to a predetermined height. Move to. Thereafter, as shown in FIG. 6E, the light valve 213 selectively emits light output from the light source 211 according to an image signal input from the outside, and the emitted light is enlarged through the magnifying lens 215. The reflection is reflected on the transflective mirror 217 and enters into the driver's eyes. The light incident on the driver's eye causes the driver to be recognized as a virtual image in a predetermined area in front of the driver as shown in FIG. 6E. The driver may obtain information desired by the image formed on the virtual image. The predetermined area may be adjusted by a manipulation of the HUD optical system 210. In the above operation sequence, the order of FIGS. 6C and 6D may be changed.

Operation according to the off signal of the head-up display is operated in the reverse order of the above described in Figures 6a to 6e, and finally the HUD optical system is closed as shown in Figure 6a. The present invention has the above configuration to prevent performance degradation due to external dust or impurities, and can also solve the problem of theft due to exposure to the outside of the device during long-term parking.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

As described above, according to the present invention, the head-up display device is sealed when not in use, thereby providing an effect of preventing performance degradation due to dust or impurities, and protecting the device from theft that may occur when parking for a long time. It also comes with effects.

Claims (10)

An HUD optical system providing image information by creating a virtual image in front of a driver; A housing unit in which the HUD optical system is installed and a guide rail is formed; The vehicle head-up display device comprising a sliding cover which moves along the guide rail formed in the housing and opens and closes the housing. The method of claim 1, wherein the sliding cover portion A sliding cover moving along a guide rail formed in the housing part; A cover gear part connected to a part of the sliding cover to move the sliding cover along the guide rail; And a drive unit for providing power to the cover gear unit. The head up display device for a vehicle according to claim 1 or 2, Vehicle head-up display device further comprises an optical system transfer device for moving the HUD optical system up and down. According to claim 3, The optical system transfer device A crank shaft vertically connected to a lower portion of the HUD optical system; An optical system gear unit configured to raise or lower the crank shaft; And a driving unit for providing power to the optical system gear unit. The apparatus of claim 3, wherein the head-up display device And a transmission unit for selectively connecting one of the sliding cover unit and the optical system transfer device to the driving unit according to a control signal input from the outside. The optical system of claim 1, wherein the HUD optical system is Light source; A light valve for selectively outputting light output from the light source according to an image signal input from the outside; And a transflective mirror configured to reflect light output through the light valve to the driver's eyes to form a virtual image in front of the driver. The method of claim 6, wherein the HUD optical system And a magnification lens for enlarging and outputting the light output through the light valve between the light valve and the transflective mirror. 7. The head up display apparatus for a vehicle according to claim 6, wherein the transflective mirror has a concave mirror shape. The vehicle head-up display device according to claim 6, wherein the transflective mirror is folded when the sliding cover is closed and is opened when the sliding cover is opened. The optical system of claim 1, wherein the HUD optical system is Light source; A light valve for selectively outputting light output from the light source according to an image signal input from the outside; And And an enlarged lens configured to enlarge the light output through the light valve and output the light to the windshield of the vehicle, wherein the light reflected by the windshield is incident on the driver's eyes to form a virtual image in front of the driver. Vehicle head-up display device.

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