JP2964491B2 - Display device for vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a display device for a vehicle.

[Prior Art] Nippon Denso Technical Report (No. 38-038, issued on November 15, 1984) receives a signal indicating the direction of a vehicle at each intersection on a road having a plurality of lanes. do it,
There is disclosed a lane display system that displays a direction in which a vehicle should travel at each intersection by using a cathode ray tube (Cathode Ray Tube: CRT).

Further, Japanese Patent Application Laid-Open No. 62-101534 discloses a vehicle display device that displays driving information such as a vehicle speed, a following running, and a fuel remaining amount warning light by forming an image on the front outside of a windshield through an optical unit. A head-up display (HUD) is disclosed.

[Problems to be Solved by the Invention] However, the former and the latter devices are not provided with a priority according to the type of driving information. For this reason, even if important driving information such as urgent driving information or driving information that warns the driver is received or detected, important driving information cannot be displayed while other driving information is being displayed.
Therefore, there is a possibility that the recognition of important driving information by the vehicle occupant is delayed, and the safety of the vehicle while traveling is reduced.

An object of the present invention is to provide a display device for a vehicle that improves safety during traveling of the vehicle.

Means for Solving the Problems A display device for a vehicle according to the present invention is a display device for a vehicle that displays a plurality of pieces of driving information in a front view of a vehicle occupant using a head-up display. Detecting means for detecting the driving information from the vehicle and driving information from inside the vehicle, determining the type of the driving information detected by the detecting means, and determining the display method according to the type of the driving information A circuit, a display element installed in the front view of the vehicle occupant, a type of driving information detected by the detection unit, and a type of driving information detected by the display detection unit selected by the determination circuit, And a display for displaying at least one display image from among a plurality of pieces of operation information in accordance with the display method selected by the determination circuit, and projecting the display image to the display element. And a display section for displaying the shadow information, wherein the display method has a priority display for displaying the driving information with a higher priority.

[Operation] When the priority display of the display method is selected according to the driving information detected by the detection means by the processing means, the driving information having a high priority is preferentially displayed in the front view of the vehicle occupant on the display means. You.

[Effect of the Invention] The driver of the vehicle can be made to quickly recognize the driving information with high priority. For this reason, safety during traveling of the vehicle can be improved.

Example A vehicle display device according to the present invention will be described based on an example shown in the drawings.

1 to 7 show a first embodiment of the present invention. FIG. 1 shows a head-up display for displaying driving information in a driver's front view.

The head-up display (HUD device: hereinafter, abbreviated as HUD) 4 includes a detecting means 2 capable of detecting a plurality of pieces of driving information, and a display method according to the type of driving information detected by the detecting means 2. Based on the processing means 3 to be selected and the display method selected by the processing means 3, a display image corresponding to the type of driving information is displayed in the forward field of view of the driver (an instrument installed on the front of the instrument panel of the vehicle). (A part different from the board).

The detecting means 2 includes an antenna 21, a receiving circuit 22, and a detecting circuit 23.

The antenna 21 is attached to a hood of the vehicle 10. The receiving circuit 22 receives a signal such as a radio wave transmitted from the driving information transmission sources 24 and 25 (driving information from outside the vehicle 10: external information) via the antenna 21 and sends it to the processing means 3.
The detection circuit 23 detects the driving information of the vehicle 10 (driving information from inside the vehicle 10: internal information) and sends it to the processing means 3.

As shown in FIG. 2, the driving information transmission source 24 is attached to the road sign 5 and transmits radio waves to the surroundings.

The driving information transmission source 25 is, as shown in FIG.
, Which transmits radio waves to the surroundings. In addition, the driving information transmission source is attached to an emergency vehicle such as an ambulance, a police car, a fire engine, a railroad crossing, or the like.

The processing means 3 has a determination circuit 31 and a display control circuit 32.

The determination circuit 31 determines the type of the operation information sent from the reception circuit 22 and the detection circuit 23, and selects a display method according to the type of the operation information.

FIG. 4 shows a display image of the vehicle speed as an example of a normal display, and FIG.
FIG. 6 shows a display image indicating that construction is in progress and a display image of vehicle speed in an example of the parallel display, and FIG. 6 shows a display image in which an approach of an ambulance is displayed as an example of the priority display.

In this embodiment, as shown in Table 1, the display method includes a normal display, a parallel display, and a priority display. The normal display is a method of displaying only vehicle information. Parallel display is
This is a method of displaying driving attention information or general information in parallel with the vehicle information. Priority indication is emergency disaster information,
In this method, only dangerous driving information or emergency vehicle approach information is displayed with priority.

When the priority display and the parallel display are selected as the display method, the determination circuit 31 determines the display order of the driving information according to the priority of each type of driving information as shown in Table 1.

The display control circuit 32 changes the display method of the display means 40 based on the display method selected by the determination circuit 31. Further, the display control circuit 32 changes the display image based on the type of the driving information determined by the determination circuit 31. When the priority display and the parallel display are selected as the display methods, the display images are selected in accordance with the display order based on the priority for each type of the driving information.

The display means 40 includes a display unit 41 and a windshield 42 as a display element.

As shown in FIG. 1, the display unit 41 is installed in the instrument panel of the vehicle, and displays a display image according to the type and display method of the driving information, and displays the display image on the windshield. It has an optical system for projecting to 42.

Displays include a cathode ray tube (CRT), a dot matrix type liquid crystal display (LCD), and a fluorescent display tube (V
FD) that can change the display image is used. As the optical system, a surface mirror for changing an optical path, a concave mirror for enlarging and displaying a display image at a distance, a lens, a hologram optical element, and the like are used.

The windshield 42 displays a display image according to the type of driving information in the front view of the driving vehicle. Further, a reflective film such as a vapor-deposited film may be formed on the windshield 42 on the side surface of the vehicle cabin.

FIG. 7 shows an example of an operation flowchart of the processing means 3 of the HUD 4.

When the operation switch of the HUD 4 is turned on, the count is set to 1, and when the operation switch is turned off, the count is set to 0 (step S1). Next, it is determined whether or not the count is set to 1 (step S2).

When the count is not set to 1 (No), the display unit 41 of the HUD 4 is turned off (step S3), and the control proceeds to step S7.

When the count is set to 1 in step S2 (Yes), the display unit 41 of the HUD 4 is turned on (step S2).
4) Detect internal information (step S5). Then, the normal display is selected as the display method (step S6).

Next, it is determined whether external information of the vehicle 10 has been received (step S7). If not received (No), control proceeds to step S1.

In step S7, when the information is received (Yes), it is determined whether emergency information such as emergency disaster information, dangerous driving information or emergency vehicle approach information is received (step S7).
8). When emergency information is not received (No), it is determined whether or not the count is set to 1 (step S
9). When the count is not set to 1 (No), the flow proceeds to the control in step S1.

In step S9, when the count is set to 1 (Yes), the parallel display is selected as the display method (step S10). Thereafter, the process proceeds to the control in step S7.

In step S8, emergency information is received (Ye
At s), it is determined whether or not the count is set to 1 (step S11). When the count is set to 1 (Yes), priority display is selected as the display method (step S12). Thereafter, the process proceeds to the control in step S7.

When the count is not set to 1 in step S11 (No), the display unit 41 of the HUD 4 is turned on (step S1).
3), and then proceed to the control of step S12.

The operation of the HUD 4 of this embodiment will be described with reference to FIGS.

When the engine starts, HUD4 detection means 2
And the processing means 3 starts operation.

Further, when the driver manually turns on the operation switch of the HUD 4, the display unit 41 of the display means 40 of the HUD 4 also starts operating.

First, the determination circuit 31 of the processing means 3 determines the type of driving information (vehicle information) sent from the detection circuit 23 when the vehicle 10 is traveling. Then, since the driving information is the vehicle information (vehicle speed), the determination circuit 31 selects the normal display as the display method and outputs it to the display control circuit 32 of the processing means 3.

The display control circuit 32 controls the display section 41 of the display means 40 to reflect only the display image of the vehicle speed (FIG. 4) on the windshield 42 to form an image in the front view of the driver. Therefore, the driver can check the vehicle speed without looking away from the front view.

Next, the receiving circuit 22 receives, via the antenna 21, driving information (driving caution information) transmitted from a driving information transmission source (not shown) provided at the road construction site. At this time, the determination circuit 31 of the processing means 3 determines the type of the driving information (running attention information). Then, since the driving information is the traveling caution information, the judging circuit 31 selects the parallel display as the display method and outputs it to the display control circuit 32 of the processing means 3.

The display control circuit 32 controls the display unit 41 of the display means 40 to display a display image showing that construction is in progress and a display image of the vehicle speed (FIG. 5).
Is reflected on the windshield 42 to form an image in the front view of the driver. For this reason, the driver can check the approach to the road construction site and the vehicle speed without looking away from the front view.

At this time, when the receiving circuit 22 receives driving information (emergency vehicle approach information) transmitted from, for example, a driving information transmitting source (not shown) attached to the ambulance via the antenna 21, the determining circuit 31 The type of (emergency vehicle approach information) is determined. Then, since the driving information is the emergency vehicle approach information, the determination circuit 31 selects the priority display as the display method and outputs it to the display control circuit 32 of the processing means 3.

The display control circuit 32 controls the display section 41 of the display means 40 to reflect the display image (FIG. 6) indicating the approach of the ambulance on the windshield 42 prior to the display image currently displayed. And form an image in the field of view ahead of the driving vehicle. The display unit 41 is turned on when the judgment circuit 31 selects the priority display, even if the operation switch of the HUD 4 is turned off.

For this reason, the driver can quickly confirm the approach of the ambulance without looking away from the front view.

Therefore, the HUD 4 of the present embodiment allows the driver to quickly recognize important driving information with high priority such as the approach of an ambulance, so that the safety while the vehicle is traveling can be compared with the conventional device. Can be improved.

When the receiving circuit 22 simultaneously receives emergency disaster information, dangerous driving information, and emergency vehicle approach information, priority display can be performed one by one in descending order of priority.

 FIG. 8 shows a HUD 4 according to a second embodiment of the present invention.

In the present embodiment, the display information is displayed in the driver's front view by using the display panel 43 as a display element for displaying a display image. In this case, the same effect as in the first embodiment is obtained.

[Other Embodiments] In the present invention, the display method is set by previously determining the relationship between the type of driving information and the priority. However, the vehicle occupant arbitrarily determines and displays the relationship between the type of driving information and the priority. The method may be changed. Therefore, the priority of the driving information is not limited to the present embodiment and can be set arbitrarily.

[Brief description of the drawings]

1 to 7 show a first embodiment of the present invention. First
FIG. 2 is a schematic diagram showing a head-up display, FIG. 2 is a schematic diagram showing a driving information source mounted on a road sign, and FIG. 3 is a schematic diagram showing a driving information source mounted on a traffic light. FIG. 4 is a diagram showing a display image of vehicle speed as an example of a normal display, FIG. 5 is a diagram showing a display image of construction being displayed and a display image of vehicle speed in an example of side-by-side display, and FIG. 6 is an example of a priority display FIG. 7 shows an example of an operation flowchart of the processing means of the HUD. FIG. 8 is a schematic view showing a head-up display according to a second embodiment of the present invention. In the figure, 2... Detecting means, 3... Processing means, 4... Head-up display (vehicle display device), 31.
40 display means, 41 display part, 42 windshield (display element), 43 display panel (display element)

Continuation of the front page (56) References JP-A-62-58111 (JP, A) JP-A-60-61897 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60K 35 / 00 G02B 27/02

Claims (2)

(57) [Claims] 1. A vehicle display device for displaying a plurality of pieces of driving information in a front view of a vehicle occupant using a head-up display, wherein driving information from outside the vehicle and driving information from inside the vehicle are provided. Detecting means for detecting the type of driving information detected by the detecting means and selecting a display method in accordance with the type of driving information; A display element, according to the type of the driving information detected by the detection unit, the type of the driving information detected by the display detection unit selected by the determination circuit, and the display method selected by the determination circuit. A display unit that displays at least one display image from among a plurality of pieces of driving information, and a display unit that projects the display image onto the display element. Vehicle display device characterized by having a priority display which displays preferentially the high operating information of the previous level. 2. The display system includes a normal display for displaying vehicle information, a parallel display for displaying general traveling road information having a higher priority than the normal display, and an emergency information having a higher priority than the parallel display. The vehicle display device according to claim 1, further comprising three display modes: and