KR20100073414A

KR20100073414A - Head up display device in vehicle

Info

Publication number: KR20100073414A
Application number: KR1020080132080A
Authority: KR
Inventors: 한상훈
Original assignee: 엘지전자 주식회사
Priority date: 2008-12-23
Filing date: 2008-12-23
Publication date: 2010-07-01

Abstract

The present invention relates to a vehicle head-up display device for enlarging a viewing angle of an image by continuously changing a path of light emitted from a display element in an up / down or left / right direction.

Description

Head Up Display Device in Vehicle

The present invention relates to a display device, and more particularly to a vehicle head-up display device.

In the 21st century, when we look at human living spaces, we can roughly divide them into three categories: home, workplace, and moving 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, a simple refrigerator, etc. can be mentioned.

In addition, as electronic products are developed, they are 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 checking the driving state (speed, RPM, direction, etc.) of the vehicle.

Therefore, there are several systems that are currently being developed as a medium that provides the driver's safety and effectively transmits vehicle driving information and surrounding information to the driver. Among them, the head up display (hereinafter, abbreviated as 'HUD') is the main. It is becoming a concern.

An object of the present invention is to provide a head-up display device for a vehicle that expands the viewing angle of an image by continuously changing the path of light emitted from the display element in the up / down or left / right directions.

Still another object of the present invention is to provide a head-up display device for a vehicle that blocks external ultraviolet rays introduced into the display element.

According to an aspect of the present invention, there is provided a vehicle head-up display device including: a display device configured to display a driving image of a vehicle; A mirror for reflecting the driving image displayed on the display element to the windshield of the vehicle and providing the driver to the windshield; And a light path conversion unit formed between the display element and the mirror and configured to continuously change a path of light emitted from the display element to enlarge a viewing angle of the driving image.

The mirror may include a first mirror that reflects light emitted from the display element in the windshield direction; And a second mirror formed between the first mirror and the windshield, the second mirror configured to enlarge and project the light reflected from the first mirror onto the windshield. It can be placed between one mirror.

The optical path converting unit may include a transmissive plate to which light emitted from the display element is incident; A rotating shaft coupled to the central axis of the transmission plate; And a rotating motor coupled to the rotating shaft and continuously tilting the transmission plate up / down or left / right about the rotating shaft.

In this case, the transmission plate may be formed of a glass or plastic material of a plate-type transparent material.

Further, when the transmission plate is continuously tilted in the up / down direction by the rotary motor, the viewing angle of the driving image is enlarged up / down, and when the transmission plate is continuously tilted in the left / right direction by the rotation motor, the driving is performed. The viewing angle of the image may be enlarged left / right.

In addition, a blocking film may be further formed on one surface of the transmission plate to block external ultraviolet light introduced through the windshield.

In this case, the blocking film may be a UV blocking film, or may be a polarizing film that polarizes and blocks the ultraviolet light.

At this time, the polarizing film is a first film for polarizing the S component of the ultraviolet light; And a second film that polarizes the P component of the ultraviolet light.

In addition, a vehicle head-up display device according to the present invention, the input unit; The controller may further include a controller configured to enlarge the viewing angle of the driving image by controlling the optical path conversion unit when the key signal for expanding the viewing angle of the driving image is input from the input unit.

The vehicle head-up display device according to the present invention can increase the viewing angle of the image by continuously changing the path of the light emitted from the display element in the up / down or left / right directions, and prevents external ultraviolet rays introduced into the display element. By blocking, there is an effect of preventing damage to the display element and lowering of contrast.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used for the same reference numerals even though they are shown in different drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, a vehicle head-up display device (hereinafter, abbreviated as “HUD”) according to an exemplary embodiment of the present invention will be described in detail with reference to the drawings.

1 is a block diagram of an embodiment of a vehicle head up display apparatus according to the present invention.

2 is a structural diagram of an embodiment of a vehicle head up display apparatus according to the present invention.

1 and 2, a vehicle head-up display device according to the present invention includes an input unit 110, a memory 120, a display element 130, a mirror 140, and an optical path converting unit. And a control unit 160.

Of course, the head-up display device according to the present invention may be configured to include other than the above-described components, if necessary, but other than the above-described components are not directly related to the present invention for simplicity of explanation. Detailed description thereof will be omitted below.

On the other hand, it should be noted that the components may be configured by combining two or more components into one component, or one component may be subdivided into two or more components as necessary when implemented in actual applications.

Hereinafter, the components of the head-up display device according to the present invention will be described in sequence.

First, the input unit 110 generates key input data that a user inputs to manipulate an operation of the vehicle head-up display device according to the present invention.

In this case, the input unit 110 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The memory 120 may store a program for operating the controller 180 and driving and operating the vehicle head-up display device, and may temporarily store user data (map data, sound, video, image data, etc.).

The memory 120 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (eg, SD or XD memory, etc.). ), Random Access Memory (RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic At least one type of storage medium may include a memory, a magnetic disk, and an optical disk.

The display element 130 displays driving image information of the vehicle under the control of the controller 180, and the display element 130 according to the present invention will be described in detail with reference to FIG. 3.

3 is a block diagram of an embodiment of a display device according to the present invention.

Referring to FIG. 3, the display element 130 is largely comprised of a light source 131, a panel 132, and an optical system 133.

The light source 131 emits light and is illustrated as a UHP lamp in FIG. 2, but may be configured as an R / G / B light emitting diode (LED) or a laser.

The panel 132 includes a liquid crystal display (LCD) panel or a liquid crystal on silicon (LCoS) panel, and outputs an image of driving information using light generated by the light source 131.

The optical system 133 enlarges an image output from the panel 132 and reflects the enlarged image to the mirror 140 to generate a virtual image.

As described above, the display element 130 may be formed in a built-in form in a dashboard, an instrument panel, a shift gear, or the like of the vehicle, and may correspond to the inside of the vehicle of the dashboard or the windshield 180. It may be formed in an external form attached to the side.

The mirror 140 may project a virtual image generated by the optical system 133 to form a virtual image representing driving information in a line of sight of the driver.

In this case, the mirror 140 is formed between the first mirror 141 for reflecting the light emitted from the optical system 133 toward the windshield 180, and between the folding mirror and the windshield 180 The second mirror 142 may be configured to enlarge and project the light reflected from the folding mirror to the windshield 180.

On the other hand, the optical path conversion unit 150 according to the present invention is disposed on the optical path between the display element 130 and the first lens 141, and the path of the light emitted from the display element 130 continuously Change.

Hereinafter, the optical path conversion unit 150 according to the present invention will be described in detail with reference to FIG. 4.

4 is a diagram illustrating an embodiment of an optical path conversion unit according to the present invention.

5 is a view showing a change in the optical path according to the tilting operation of the transmission plate according to the present invention.

4 and 5, the optical path conversion unit 150 according to the present invention includes a transmission plate 151, a rotation shaft 152, and a rotation motor 153.

The transmissive plate 151 may be formed of a plate-shaped glass or plastic material capable of transmitting light emitted from the display element 130.

The rotation shaft 152 is coupled to the central axis of the transmission plate 151.

The rotary motor 153 is coupled to the rotary shaft 152, under the control of the control unit 180, the transmission plate 151 around the rotary shaft 152 up and down within a range of a predetermined angle. Or continuously tilt in the left-to-right direction.

As shown in (a) and (b) of FIG. 5, the transmission plate 151 is tilted in the up ↔ down or left ↔ right direction within a range of a predetermined angle with respect to the central axis by the rotary motor 153. As a result, the traveling direction of the light is continuously changed.

That is, when a key signal for enlarging the left / right viewing angle of the driving image is input from the user through the input unit 110, the control unit 180 may rotate the transmission plate 151 in a predetermined angle range by the rotary motor 153. Control to continuously tilt in the left-to-right direction.

In addition, when a key signal for enlarging the upper / lower viewing angle of the driving image is input from the user through the input unit 110, the controller 180 may rotate the transmission plate 151 in a predetermined angle range by the rotary motor 153. Control to continuously tilt in the up-to-down direction.

On the other hand, as shown in Figure 6 below, on one side of the transmission plate 151 according to the present invention is formed a blocking film 170 to block the external ultraviolet light flowing through the windshield 170.

6 is a view showing the structure of a barrier film formed in the transmission plate according to the present invention.

Referring to FIG. 6, the blocking film 170 according to the present invention is formed on the rear surface of the ultraviolet blocking film 170a for blocking ultraviolet rays introduced from the outside and the ultraviolet blocking film 170a to reflect the S component of ultraviolet light. And a second polarizing film 170b passing through the P component and a second polarizing film 170c formed on the rear surface of the first polarizing film 170b to reflect the P component of the ultraviolet light and pass the S component. It is configured by.

Of course, the order of the first polarizing film and the second polarizing film 170b and 170c may be changed, and the UV blocking film 170a may also be formed on the rear surface of the second polarizing film 170c.

That is, when ultraviolet rays are introduced from the outside to reach the blocking film 170, the UV blocking film 170a attached to the surface of the blocking film 1700 blocks a predetermined amount of ultraviolet light.

Thereafter, when the remaining ultraviolet rays passing through the ultraviolet blocking film 170a reach the first polarizing film 170b, the first polarizing film 170b reflects the S components of the remaining ultraviolet rays and passes the P component.

Afterwards, the remaining ultraviolet rays remain only the P component, and when the P component of the remaining ultraviolet rays reaches the second polarizing film 170c, the second polarizing film 170c reflects the P components of the remaining ultraviolet rays and finally the ultraviolet rays. Will block.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative.

The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

110: input unit 120: memory

130: display element 140: mirror

150: light path conversion unit 151: transmission plate

152: rotating shaft 153: rotary motor

160: control unit 170: the blocking film

170a: ultraviolet ray blocking film 170b: first polarizing film

170c: second polarizing film 180: windshield

Claims

A display element for displaying a driving image of the vehicle;

A mirror for reflecting the driving image displayed on the display element to a windshield of the vehicle and providing the driver to the driver; And

And an optical path conversion unit formed between the display element and the mirror and configured to continuously change a path of light emitted from the display element to enlarge a viewing angle of the driving image.

The method of claim 1, wherein the mirror,

A first mirror reflecting light emitted from the display element in the windshield direction; And

And a second mirror formed between the first mirror and the windshield, the second mirror extending and projecting the light reflected from the first mirror onto the windshield.

The method of claim 2,

And the optical path converting unit is disposed between the display element and the first mirror.

The optical path converter of claim 1,

A transmissive plate to which light emitted from the display element is incident;

A rotating shaft coupled to the central axis of the transmission plate; And

And a rotating motor coupled to the rotating shaft and continuously tilting the transmission plate about the rotating shaft in an up / down or left / right direction.

5. The method of claim 4,

The transmission plate is a head-up display device for a vehicle, characterized in that formed of a plate-type transparent glass or plastic material.

5. The method of claim 4,

When the transmission plate is continuously tilted in the up / down direction by the rotary motor, the viewing angle of the driving image is enlarged up / down, and when the transmission plate is continuously tilted in the left / right direction by the rotation motor, Vehicle head-up display device characterized in that the viewing angle is enlarged left / right.

5. The method of claim 4,

On one side of the transmission plate is a vehicle head-up display device, characterized in that the blocking film is formed to block the external ultraviolet light flowing through the windshield.

The method of claim 7, wherein

The blocking film is a vehicle head-up display device, characterized in that the UV blocking film.

The method of claim 7, wherein

The blocking film is a vehicle head-up display device, characterized in that the polarizing film to polarize and block the ultraviolet light.

The method of claim 9, wherein the polarizing film,

A first film for polarizing the S component of the ultraviolet light; And

And a second film for polarizing the P component of the ultraviolet light.

According to claim 1,

An input unit; And

And a controller configured to enlarge the viewing angle of the driving image by controlling the optical path conversion unit when a key signal for expanding the viewing angle of the driving image is input from the input unit.