JP2003039983A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle which can easily adjust the position of a displayed image. SOLUTION: This display device for the vehicle (head-up display) 1 is provided with a display 3 emitting a display light forming a predetermined displayed image. It is provided with a reflecting member reflecting the display light toward a driver to have the driver recognize the displayed image. It is provided with a moving means (motor) 7 for moving the display position of the displayed image by changing the irradiating direction of the display light applied to the reflecting member. It is provided with an operating means (control unit) 14 for allowing driving of the moving means 7. It is provided with a control means 11 for displaying a mark indicating a display range of the displayed image at operation of the operating means 14 and displaying a first display part of the mark corresponding to the moving direction of the displayed image by the operating means differently from a second display part of other display parts of the mark.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle display device, and more particularly to a vehicle display device in which predetermined information is displayed in a display area on a windshield.

[0002]

2. Description of the Related Art Conventionally, in a display device for a vehicle such as an automobile, a so-called head-up display has been known for the purpose of improving the visibility when a driver views the display while driving. Such a head-up display is a thin-film combiner (reflecting member) formed on the surface of the windshield or a combiner-treated windshield for displaying light emitted from a light-emitting display installed under the windshield. By reflecting the light toward the driver by the (reflecting member), the driver recognizes the displayed image, which is a virtual image, on the front scene through the windshield.

By taking such a configuration, the driver can
Compared with the case of viewing a conventional display device (meter device) fitted at a predetermined position in the instrument panel, the line of sight by alternately looking forward through the windshield and visually recognizing display information. Since it is possible to significantly reduce the movement amount of the, it is possible to improve the visibility. Further, since the display image projected on the windshield can be recognized without the driver's eyes looking through the windshield and the focus of his eyes, the time required to recognize the display information can be shortened. In addition, the displayed information can be confirmed while looking at the front field of view, and the safety during driving can be improved.

[0004]

By the way, in such a head-up display, the driver recognizes the displayed image, which is a virtual image, by superimposing the virtual display image on the front scene through the windshield. It is necessary to change the position of the display image.

Generally, the driver operates the control switch for rotating the reflecting mirror in the display device to move the display image up and down, thereby displaying the display image matching the viewpoint of the driver. Select a position.

However, since the display that is turned on when the driver adjusts the position of the display image is a part of the display when all the lights are turned on, the driver displays the display when adjusting the position of the display image. The position of the display image must be adjusted without being able to recognize the entire range of the image, which makes it difficult to accurately adjust the position of the display image.

Japanese Patent Laid-Open No. 7-266925 discloses an ignition system which aims to solve these problems.
It is known that the head-up display is set to the full lighting mode and the display brightness is set to the maximum value when the vehicle is stopped immediately after being turned on.

However, in such a head-up display, immediately after the ignition is turned on,
In addition, since the display is in the full lighting mode only when the gear is in the parking mode, there are limited opportunities to easily adjust the position of the display image. Further, in the daytime, there is a problem that the visibility cannot be improved even if the display has the maximum brightness, and a head-up display capable of more easily adjusting the position of the display image regardless of day or night is desired. ing.

Focusing on these problems, the present invention makes it possible to easily adjust the display image at a position that matches the driver's viewpoint without limiting the opportunity to adjust the position of the display image. The purpose of the present invention is to provide a display device.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a display device which emits display light forming a predetermined display image, and reflects the display light toward a driver to drive the vehicle. A reflecting member that allows a person to recognize the display image, a moving unit that moves the display position of the display image by changing the irradiation direction of the display light with which the reflecting member is irradiated, and the driving of the moving unit is permitted. The operating means and a mark indicating the display range of the display image when the operating means is operated are displayed, and the first display portion of the mark corresponding to the moving direction of the display image by the operating means is set to another of the marks. It is characterized by comprising a control means for displaying the second display section which is a display section differently from the second display section.

Further, the control means is characterized in that the first display section is displayed in a blinking manner.

Further, the control means is characterized in that the first display section is displayed in a color different from that of the second display section.

Further, the control means is characterized in that a frame-shaped mark provided so as to surround the display range of the display image is displayed as the mark.

Further, a display device which emits display light forming a predetermined display image, a reflecting member for reflecting the display light toward a driver to allow the driver to recognize the display image, and the reflecting member are provided. Moving means for moving the display position of the display image by changing the irradiation direction of the emitted display light, operating means for permitting driving of the moving means, and display range of the display image when the operating means is operated. In the above, it is characterized in that it comprises: a control means for reversing and displaying a light emitting portion which is the display image and a non-light emitting portion other than the light emitting portion.

Further, the control means is characterized in that, when the light emitting portion and the non-light emitting portion are reversed and displayed, the light emitting luminance is made lower than the light emitting luminance before the reversal.

In addition, a display device that emits display light forming a predetermined display image, a reflecting member that reflects the display light toward the driver to allow the driver to recognize the display image, and the reflecting member Moving means for moving the display position of the display image by changing the irradiation direction of the emitted display light, operating means for permitting driving of the moving means, and display range of the display image when the operating means is operated. And a control unit for causing the entire display to emit light.

Further, the control means is characterized in that when the entire display range is displayed by light emission, the emission brightness is made lower than the emission brightness of the display image.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the head-up display 1 comprises a light source 2, a display device 3, a reflecting mirror 4, a windshield 5, a combiner (reflecting member) 6, and a motor (moving means) 7. ing.

The light source 2 emits light toward a display device 3 which will be described in detail later.

The display device 3 is composed of a dot matrix type liquid crystal display device and is provided with a predetermined display pattern indicating driving information such as vehicle speed and engine speed.
Is arranged in front of. Further, the display 3 emits the display pattern which is the predetermined display light 3a by transmitting the light emitted from the light source 2.

The reflecting mirror 4 is for reflecting the display light 3a emitted from the display device 3 on the combiner 6 which will be described in detail later. The reflecting surface 4a for reflecting the display light and the reflecting mirror 4 will be described later in detail. A gear 7a mounted on the shaft of the motor 7 described above and a gear 4b meshing with the gear 7a are provided.

The combiner 6 is a thin film-shaped reflecting member formed on the inner surface of the windshield 5 and serves as a display light.
a is reflected toward the driver.

The motor 7 is a moving means for moving the reflecting mirror 4 in a vertical direction by rotating the reflecting mirror 4 to change the angle of the reflecting surface 4a. For example, when the viewpoint of the driver is at the position of the viewpoint 8, by adjusting the angle of the reflecting mirror 4 via the motor 7, the reflection direction of the display light 3a set in the direction that matches the viewpoint 9 is controlled by the driver. The reflection direction is adjusted to match the viewpoint 8 so that the reflected light 3a is directed to the driver. The driver whose display light 3a is directed recognizes the display image 10, which is a virtual image, on the front scene through the windshield 5. As a result, the driver can recognize the display image 10 at a position where he / she can easily see.

Next, the electrical configuration of the head-up display 1 will be described with reference to FIG.

The head-up display 1 is mainly composed of a microcomputer 12 which is a control means 11, a sensor 13 such as a speed sensor, a control unit 14 which is an operation means, and a motor 7 provided on the reflecting mirror 4. ing.

The control means 11 is a microcomputer 12 which is an arithmetic means for executing a predetermined program, and a traveling signal corresponding to a traveling state of the vehicle such as a vehicle speed is detected by the sensor 1.
3 is input via the drive circuit (not shown), a predetermined calculation is performed according to this vehicle signal, and a control signal corresponding to this calculation result is output to the display device 3 via a drive circuit (not shown). It is possible to obtain a display pattern that is a speed display according to the traveling state.

Further, the control means 11 executes processing relating to the position adjustment of the display image 10 on the display 3 and the mark display described later, which will be described in detail later, based on the input of the operation signal from the control unit 14. Is.

The control unit 14 has a plurality of switch groups including push button switches and the like, and the display image 1
The display position of 0 is adjusted, and on / off of the head-up display 1 itself, display brightness, and the like are adjusted according to the driver's preference.

Next, a method of adjusting the position of the display image 10 and displaying the mark indicating the display range of the display image 10 according to the first embodiment of the present invention will be described with reference to FIGS.

First, the position adjustment of the display image 10 will be described. When the display image 10 is adjusted so as to match the viewpoint 9 as shown in FIG.
It is recognized as shown in (c), and the entire display range A of the display image 10 cannot be recognized (the hatched portion indicates the outside of the driver's recognition range). The display range A as used herein means a region including the entire range in which the liquid crystal display element is formed in the display device 3, and is a range in which display can be performed in the full lighting state. When the driver's viewpoint is at the position of the viewpoint 8, the driver operates the motor 7 by operating the control unit 14 so that the angle of the reflecting surface 4a of the reflecting mirror 4 is changed so that the state of FIG. The position of the display image 10 is adjusted by changing it. However, it is more difficult for the driver to grasp the display range A of the display image 10 during normal lighting, as compared with FIG.

Therefore, in the head-up display 1, when the driver operates the control unit 14 to input the input signal of the control unit 14 to the control means 11, the motor 7 is activated and at the same time the display device is displayed. A control signal is output to the display 3 to display the mark B so that the display range A of the display image 10 in 3 can be recognized. The mark B is a frame-shaped mark indicating the display range A as shown in FIG. 4 (FIG. 4A). As for the shape of the frame-shaped mark, there are intermittent frames (FIG. 4B) that are located only above and below the periphery of the display range A and are not on the left and right, or brackets located at the corners of the display range A (FIG. (C)) may be used.

Further, when the input signal of the control unit 14 inputted to the control means 11 is for moving the display image 10 upward, the control means 11 displays the mark B and the display as shown in FIG. The first display portion B1 corresponding to the moving direction of the image 10 is displayed in a blinking manner so as to be displayed differently from the second display portion B2 which is another display portion. Control unit 1 input to control means 11
When the input signal of 4 moves the display image 10 downward, the display unit located below the mark B displays the display image 1
It becomes the first display portion corresponding to the moving direction of 0 and is displayed in blinking.

As a display method in which the first display portion B1 is displayed differently from the second display portion B2 which is another display portion, the first display portion B1 is different from the second display portion B2. It may be displayed in different colors, or a combination of blinking display and display in different colors.

In this head-up display 1, the driver controls the control unit 1 by the control means 11.
By operating mark 4 and displaying the mark B indicating the display range A of the display image 10 at the same time, it is possible to easily adjust the position of the display image 10 to a position that matches the driver's viewpoint without limiting the opportunity to adjust the position. Is possible.

Further, by the display means 11, the first display portion B1 of the mark B corresponding to the moving direction of the display image 10 by the operation of the control unit 14 is changed to the second display portion B2.
By displaying them differently, the moving direction of the display image 10 can be clearly recognized by the driver, and the position of the display image can be more easily adjusted to a position that matches the viewpoint of the driver. It will be possible.

In particular, when the mark B, which is a frame-shaped mark provided so as to surround the periphery of the display range A, is used as the mark indicating the display range A of the display image 10, the display image 10 has a simple design. It is possible for the driver to recognize the display range A without hindering the display of 10.

Next, a display method showing the display range A of the display image 10 according to the second embodiment of the present invention will be described with reference to FIG. 5, which is the same as the above-described first embodiment of the present invention. The same or corresponding parts will be denoted by the same reference symbols and detailed description thereof will be omitted.

The head-up display 1 according to the second embodiment of the present invention differs from the above-described first embodiment of the present invention in that the driver operates the control unit 14 to control the control unit. When the input signal 14 is input to the control means 11, the display range A of the display image 10 on the display 3 can be recognized at the same time when the motor 7 is operated. This is the point where a control signal is output to the display device 3 so as to invert and display the light-emission part that is the image 10 and the non-emission part other than the display image 10. .

In FIG. 5, in the normal display, in the display range A, the display image 10 is displayed by positive display in which the inner portion of the display image 10 is the light emitting portion and the background portion which is the outer portion of the display image 10 is the non-light emitting portion. (FIG. 5 (a)). When the driver operates the control unit 14 to input the input signal of the control unit 14 to the control means 11, the control means 11 causes the display range A to be displayed on the display range A at the same time when the motor 7 is operated. The display image 10 is displayed by reversing the negative display in which the inner portion is the non-light emitting portion and the background portion which is the outer portion of the display image 10 is the light emitting portion (FIG. 5B). In the negative display of the display image 10, considering the visibility to the driver, the display range A
It is desirable to reduce the light emission luminance of the background portion of the display image 10 below the light emission luminance of the display image 10 during normal lighting.

In such a head-up display 1, when the control unit 14 is operated, the light emitting portion and the non-light emitting portion in the display range A are displayed in reverse so that the display range A can be displayed without providing a special display. The range A can be recognized by the driver, and the position of the display image 10 can be easily adjusted to a position that matches the driver's viewpoint with a simpler configuration.

Further, the light emission brightness when displaying the light emitting part and the non-light emitting part in the display range A in a reversed manner is made lower than the light emitting brightness in the display before the inversion, and the area of the light emitting part is reduced by the reverse display. Even if the display is enlarged compared to before the reversal, it is possible to prevent the display brightness recognized by the driver from becoming excessive, and it is possible to improve the visibility for the driver.

Next, a display method showing the display range A of the display image 10 according to the third embodiment of the present invention will be described with reference to FIG. 6, but the above-described first and second embodiments of the present invention will be described. The same reference numerals are given to the same or corresponding portions as in the above embodiment, and detailed description thereof will be omitted.

In FIG. 6, during normal lighting, in the display range A, the display image 10 is displayed by positive display in which the inner portion of the display image 10 is the light emitting portion and the background portion which is the outer portion of the display image 10 is the non-light emitting portion ( FIG. 6A). When the driver operates the control unit 14 to input the input signal of the control unit 14 to the control means 11, the control means 11 emits light in all areas of the display range A at the same time when the motor 7 is operated. Display (Fig. 6)
(B)). In consideration of visibility to the driver in the light emission display of all the areas of the display range A, it is desirable that the light emission brightness of the light emission display in the display range A be lower than the light emission brightness of the display image 10 at the time of normal lighting.

In the head-up display 1, the driver can recognize the display range A without providing a special display indicating the display range A by causing the entire display range A to emit light when the control unit 14 is operated. The position of the display image 10 can be easily adjusted to a position that matches the driver's viewpoint with a simpler configuration.

Further, the light emission brightness when the entire display range A is displayed by light emission is made lower than the light emission brightness during display at the time of normal lighting, and the area of the light emitting portion is expanded by the whole light emission display as compared with the case of normal lighting. However, it is possible to prevent the brightness of the display recognized by the driver from becoming excessive, and it is possible to improve the visibility for the driver.

In the present invention, the display 3 may be a self-luminous element such as an electroluminescent element (ELD) or a light emitting diode (LED). In this case, the light source 2 can be omitted. Become.

[0048]

As described above, according to the vehicle display device of the present invention, the display range of the display image can be recognized by the mark (frame mark, background mark), and the driver can display the display image. It is possible to easily adjust the display image to a position that matches the driver's viewpoint without limiting the opportunity for position adjustment.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a head-up display that is a first embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of the same.

FIG. 3 is a diagram showing an example of a display image in the above.

FIG. 4 is a diagram showing a display example of the above.

FIG. 5 is a diagram showing a display example on a head-up display that is a second embodiment of the present invention.

FIG. 6 is a diagram showing a display example on a head-up display that is a third embodiment of the present invention.

[Explanation of symbols]

1 Head-up display (vehicle display device) 2 light sources 3 display 3a Display light 4 reflector 5 windshield 6 combiner (reflection member) 7 Motor (moving means) 8 viewpoints 9 viewpoints 10 Display image 11 Control means 12 Microcomputer 13 sensors 14 Control unit (operating means) A display range B Frame-shaped mark (mark) B1 First light emitting unit B2 Second light emitting unit

Claims (8)

[Claims] 1. A display device that emits display light that forms a predetermined display image, a reflecting member that reflects the display light toward a driver to allow the driver to recognize the display image, and the reflecting member. Moving means for moving the display position of the display image by changing the irradiation direction of the emitted display light, operating means for permitting driving of the moving means, and display range of the display image when the operating means is operated. And a control for displaying the mark indicating that the first display portion of the mark corresponding to the moving direction of the display image by the operating means is different from the second display portion which is the other display portion of the mark. A display device for a vehicle, comprising: 2. The vehicle display device according to claim 1, wherein the control unit causes the first display unit to blink. 3. The vehicle display device according to claim 1, wherein the control unit displays the first display unit in a color different from that of the second display unit. . 4. The control means displays a frame-shaped mark provided so as to surround the display range of the display image as the mark.
5. The vehicle display device according to any one of 1. 5. A display device that emits display light that forms a predetermined display image, a reflecting member that reflects the display light toward a driver and causes the driver to recognize the display image, and the reflecting member. Moving means for moving the display position of the display image by changing the irradiation direction of the emitted display light, operating means for permitting driving of the moving means, and display range of the display image when the operating means is operated. The display device for a vehicle according to claim 1, further comprising: a control unit configured to invert and display a light emitting portion that is the display image and a non-light emitting portion other than the light emitting portion. 6. The control means reduces the light emission brightness from the light emission brightness before the inversion when displaying the light emission part and the non-light emission part by reversing the display. Vehicle display device. 7. A display device that emits display light that forms a predetermined display image, a reflecting member that reflects the display light toward a driver to allow the driver to recognize the display image, and the reflecting member. Moving means for moving the display position of the display image by changing the irradiation direction of the emitted display light, operating means for permitting driving of the moving means, and display range of the display image when the operating means is operated. A display device for a vehicle, comprising: a control unit that causes the entire display to emit light. 8. The vehicular display device according to claim 7, wherein the control unit reduces the light emission brightness to be lower than the light emission brightness of the display image when the entire display range is displayed by light emission.