JPH0790727B2 - Vehicle display - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle display device for displaying driving information in the driver's visual field.

(Prior Art) Conventionally, driving information such as vehicle speed, mileage, inter-vehicle distance, engine tachometer, fuel level, and various warnings was displayed by a meter provided on the instrument panel. In order to avoid having to look away from the front field of view when viewing, these driving information are reflected on the windshield to form an image in the front field of view of the vehicle.
A display device has been considered, which is designed to be viewed so as to overlap with the foreground in the field of view (for example, JP-A-57-182541).
This device is called a head-up display device.

In such a conventional vehicle display device, the size of the driving information image displayed is constant, but when displaying driving information in a system such as a constant speed traveling system or a follow-up traveling system, A large value increases the appealing power, but a large display always disturbs the eyes, and a small display weakens the appealing power and makes it easy to overlook.
Therefore, it may be possible to display it in a large size first and then erase it after a few seconds, but then there was the problem that it would be difficult to know if the system is currently operating.

(Object and Structure of the Invention) The present invention has been made in view of the above points, and an object thereof is to increase the attention of the display and to avoid the inconvenience. An abnormality detecting means for detecting an abnormal state and outputting a detection signal; and a time measuring means for outputting a predetermined time elapsed signal after a predetermined time has elapsed from the time when the detection signal was output from the abnormality detecting means
When the detection signal is input, the first alarm display indicating the abnormal state is displayed by either a character or a mark at the center of a predetermined area in front of the windshield, and the predetermined time elapse signal is output from the time measuring means. Is input, display control means for displaying, in place of the first alarm display, a second alarm display smaller than the first alarm display in the peripheral portion of the predetermined area with either the character or the mark. And the first alarm display is a character display indicating the abnormal condition, and the second alarm display is a vehicle display device with a mark indicating the abnormal condition. The first alarm display is a mark representing the abnormal state, and the second alarm display is a vehicle display device with characters indicating a method of coping with the abnormal state.

(Example) The present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a vehicle display device according to the present invention, in which a signal from a driving information detecting means is controlled by a display controlling means so that the driving information displaying means displays the driving information for a certain period of time. Large driving information is displayed, and after a certain period of time, small driving information is displayed so that the driving information is displayed on the windshield or the like via the optical means and is imaged in the front outside of the vehicle. So that the head-up display is made.

FIG. 2 shows an embodiment of a display device according to the present invention, in which 1 is a CRT which displays driving information by numbers, characters, pictures and the like.
A projector including a display body 1a such as a dot matrix fluorescent display tube and an optical system 1b for projecting display light from the display body 1a toward the windshield 2, and 2a is a windshield 2.
A combiner having a thin film formed by vapor deposition or coating thereon, 3 is a driver's eye, 4 is an upright virtual image of driving information formed in front of the windshield 2, and 5 is a front view.

The driving information display light projected from the projector 1 is reflected by the combiner 2a of the windshield 2 and enters the eyes 3 of the driver. The driver can see the erect virtual image 4 of the driving information and the foreground 5 in front of each other outside the windshield 2. Reference numeral 6 is a display control circuit for controlling the display of driving information displayed on the display 1a by a signal from the control circuit 7 of the follow-up traveling system, and 8 is a radar device for measuring an inter-vehicle distance to a vehicle in front. Performs signal processing for follow-up running (running while keeping the inter-vehicle distance constant) based on the inter-vehicle distance signal from the radar device 8. Reference numeral 9 is a follow-up traveling actuator for traveling while maintaining a vehicle-to-vehicle distance from a vehicle in front by a signal from the control circuit 7 of the follow-up traveling system.

FIG. 3 is a flow chart for explaining the operation information display operation in the embodiment shown in FIG. 2, and next, the operation will be explained based on this flow chart.

The following example is an example of head-up display when the vehicle is following the preceding vehicle by a signal from the control circuit of the following system.

When the inter-vehicle distance from the preceding vehicle is kept constant for several seconds by the inter-vehicle distance signal from the radar device 8, the control circuit 7 of the follow-up traveling system sends a follow-up ON signal to the follow-up traveling actuator 9 and the display control circuit 6 ( F-1). When it is determined that the tracking has started (F-2), the timer is reset at that time (F-3). Next, the vehicle information (for example, while following the vehicle distance of 80 m) is displayed in a large size outside the windshield near the center of the driver's field of view (F-
4). After that, it is judged whether or not the state continues for 3 seconds or more (F-5), and if it continues for 3 seconds or more, the vehicle information display size is reduced, and the vehicle information is displayed with a slight shift from the center of the driver's field of view ( F-6). The display size and the display position are controlled by the display control circuit 6. After that, it is determined whether or not the follow-up running has been canceled (F-6), and when it is canceled, the display is erased (F-8).

FIG. 4 shows a "LOCK ON" display on the combiner 2a formed on the windshield 2 of the display device of the present invention, which indicates that the radar device of the own vehicle has caught the vehicle in front of the vehicle as an example of the driving information. It is the figure which looked at it from the inside of the car. Reference numeral 11 is a hood of the vehicle, 5 is a view in front of the vehicle, 12 is a front vehicle that is following, and 13 is a steering wheel. FIG. 4 (a) is a display immediately after starting to follow the vehicle in front, and the "LOCK ON" of the driving information is displayed large near the center of the driver's visual field. FIG. 4 (B) shows the display after 3 seconds of (A), and the driving information is displayed in a small size at the right end slightly off the center of the driver's visual field. In the case of FIG. 4 (a), in order to further enhance the appeal of the display, for example, the display may be blinked every 0.5 seconds. Further, the display of (b) may be blinked for a few seconds or constantly without blinking the display of (b).

FIG. 5 is an enlarged view of the combiner 2a and the display during constant-speed traveling, (a) is a display example immediately after the constant-speed traveling is set, and (b) is a display example after a few seconds have elapsed.

FIG. 6 shows still another display example, in which a fuel level warning lamp is displayed instead of the vehicle information for constant speed traveling or following traveling. In this example, the display in (b) is the lower right end of the combiner 2a, but the same effect can be obtained by displaying the upper right end or the center as shown in FIGS. 7 and 8.
If such a small display is not in the center of the field of view, the combiner
It can be anywhere above 2a above the left edge or below the left edge.

FIG. 9 shows still another display example which is considered to be effective mainly for alarms and warnings, and is an example of the display of fuel shortage.

When the amount of fuel drops below a certain level, as shown in Fig. 9 (a).
"FUEL SHORTAGE" is displayed in front of the windshield. After a few seconds, a small fuel amount warning mark 31 is displayed at the lower right of the visual field as shown in FIG. This is suitable for the driver to know what kind of abnormal condition the large display is, and to keep the memory of the abnormal condition thereafter.

On the contrary, warnings and warnings may be displayed first in pictures and then in small letters. In some cases, the driver displays a textual indication of what to do for the warning. FIG. 10 is an example of such a display.

In FIG. 10, 32 is a mark indicating an increase in exhaust temperature,
33 displays instructions on what is required of the driver. In this example, the vehicle is stopped and the instruction to wait 10 minutes is given. In addition, it is effective for tire pressure warning (a warning is given with a picture and the part and air pressure are indicated by letters) and charging abnormality (a warning is given with a picture and the part and the degree of abnormality are indicated with letters).

(Effects of the Invention) As described above, in the present invention, when an abnormal state of a vehicle is detected, a first alarm display is displayed by either a character or a mark at the center of a predetermined area in front of the windshield. However, after a predetermined time, the second alarm display smaller than the first alarm display is displayed on the periphery of the predetermined area with either the letter or the mark, so that the first display enhances the appeal to the driver. The abnormal state can be reliably recognized, and after the lapse of a predetermined time, the second alarm display is displayed in a small size in the peripheral area of the predetermined area. Therefore, the display is not bothered and the alarm is always recognized without forgetting that the alarm is issued. it can. Further, since the first alarm display is a character display indicating an abnormal condition and the second alarm display is a mark indicating an abnormal condition, a mark having various kinds of warning meanings, for example, a brake warning light. Even when is displayed, the warning content is first displayed in text in the center of the predetermined area, so the driver can accurately recognize the abnormal state, and after a predetermined time, a small mark is displayed in the peripheral area of the predetermined area. Therefore, the driver can always be aware of the abnormal state and without being bothered. Further, since the first alarm display is a mark indicating an abnormal condition and the second alarm display is a small character display indicating a method of coping with the abnormal condition, the mark indicating the abnormal condition displayed in the center of the predetermined area of the driver. The occurrence of an abnormality can be quickly recognized by the, and after a lapse of a predetermined time, small letters are displayed in the peripheral area of the predetermined area so that the driver can always be aware of the details of the abnormal state without feeling any trouble. Therefore, it is possible to accurately deal with the abnormal state.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a vehicular display device according to the present invention, FIG. 2 is a schematic detailed view of an embodiment of the vehicular display device according to the present invention, and FIG. 3 is an operation by the display device shown in FIG. A flow chart of the information display operation, FIG. 4 is a view of the driving information display mode according to the present invention viewed from the indoor side, and FIGS. 5 to 10 are different examples of the driving information display mode according to the present invention. 1 ... Projector, 1a ... Driving information display, 1b ... Optical system, 2 ... Windshield, 3 ... Driver's eye,
11 …… bonnet hood, 12 …… leading vehicle, 13 …… steering wheel

Claims (3)

[Claims] 1. An abnormality detecting means for detecting an abnormal state of a vehicle and outputting a detection signal, and a time measuring means for outputting a predetermined time elapsed signal after a predetermined time has elapsed from the time when the detection signal was output from the abnormality detecting means. When the detection signal is input, a first warning display indicating the abnormal state is displayed by either a character or a mark at the center of a predetermined area in front of the windshield, and the time measuring means sets a predetermined time. When a progress signal is input, instead of the first alarm display, a second alarm display smaller than the first alarm display is displayed in the peripheral portion of the predetermined area with either the character or the mark. A display device for a vehicle, comprising: display control means. 2. The first alarm display is a character display showing the abnormal condition, and the second alarm display is a mark showing the abnormal condition. The display device for a vehicle according to the item. 3. The first alarm display is a mark indicating the abnormal condition, and the second alarm display is a character indicating a coping method for the abnormal condition. The vehicle display device according to item 1.