JP2537289B2 - Display device - Google Patents

Description

The present invention relates to a display device, and more particularly to a display device incorporated in a helmet and capable of visually recognizing display information from a display device while wearing the helmet. Regarding

[Conventional technology]

The inventors of the present invention arrange a display device such as a liquid crystal cell for displaying desired display information inside the helmet, and use this display to form an image of the display information such as speed on the inside of the shield portion of the helmet. As a result, a so-called HUD display device was developed in which a virtual image is formed at a predetermined position outside the shield, and a viewer visually recognizes the virtual image to recognize the display image.

FIG. 6 shows a helmet incorporating such a display device, and a visible opening 2 is formed on the front surface of the helmet 1, and a transparent shield 3 is attached to the opening 2 portion. Has been done.

In addition, a display device 4 that is bent and formed in a substantially V shape is provided inside the front portion of the helmet 1, and the upper and lower ends of the display device 4 are located on the front side of the helmet 1. Are arranged as follows. A liquid crystal cell 5 as a display device for displaying desired display information is arranged at the lower end portion of the display device 4, and the liquid crystal cell 5 applies a voltage to a predetermined portion thereof based on the desired information. By applying the voltage, only the portion to which this voltage is applied becomes transparent, and the light from the light source (not shown) disposed below the liquid crystal cell 5 can be transmitted. In addition, the display device 4
Inside the above-mentioned curved portion of, the reflection plate 6 is disposed,
At the upper end of the display device 4, an optical unit 7 which is composed of a plurality of lenses and focuses the display information from the liquid crystal cell 5 on the inner surface of the shield 3 is provided.

In the display device, the light from the light source is emitted by irradiating the back side of the liquid crystal cell 5 with light from the light source and applying a voltage to the liquid crystal cell 5 based on predetermined display information to make the display transparent. A display image is formed through the display portion of the liquid crystal cell 5. Then, this display image is reflected by the reflection plate 6 and then imaged inside the shield 3 via the optical unit 7, whereby a virtual image is formed at a predetermined position outside the shield 3, and this virtual image is formed. The display image can be visually recognized by the viewer.

In the display device, the display information is imaged at one corner of the shield so as not to obstruct the visual field of the viewer when driving.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional display device, the display information is displayed at the corner of the shield 3 of the helmet 1. Therefore, when traveling on a curve that bends toward the display side of this display information, the driver's viewpoint Is directed to the exit of the curve, the displayed information overlaps the driver's viewpoint, and the displayed information obstructs the driver's field of view, making traveling on the curve extremely dangerous. .

The present invention has been made in view of the above points, and an object of the present invention is to provide a display device capable of safely performing a curve traveling without hindering the driver's field of vision by the display information.

[Means for solving the problem]

In order to achieve the above-mentioned object, the display device according to the present invention is provided with a display device for displaying predetermined information inside the helmet, and the display information from the display device is reflected to the viewer side by the shield of the helmet. In the display device for visually recognizing the virtual image of the display information of the display device, from the state of the posture of the vehicle being driven, a curve traveling determination means for determining whether or not the vehicle is traveling on a curve, Display stop means is provided for stopping the display of the information by the display when the curve running determination means determines that the vehicle is traveling on a curve.

[Action]

According to the present invention, by displaying the display information based on a predetermined signal such as the speed on the inside of the shield of the helmet by the display, a virtual image is formed at a predetermined position outside the shield, and the virtual image is displayed. The display image can be recognized by the viewer. Then, when the curve traveling determination means determines that the vehicle is traveling on a curve from the state of the posture of the vehicle being driven, the display suspending means suspends the display of information by the display. Therefore, whether or not the vehicle is traveling on a curve can be reliably determined based on the traveling posture of the vehicle rather than the traveling speed of the vehicle, and when the vehicle is traveling on a curve, the visibility of the driver is obstructed by the display information. It is possible to drive on a curve in a very safe manner.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

FIG. 1 shows an embodiment of a display device according to the present invention. Inside the helmet 1, a display device 4 including a display such as a liquid crystal cell and a light source is built in. A display circuit 8 for sending predetermined display information to the display is connected to 4.

In addition, a vehicle speed sensor is installed on the vehicle body of the motorcycle 9 or the like.
The helmet described above is based on a detection signal corresponding to the vehicle speed from the steering wheel steering angle sensor 11, a detection signal corresponding to the steering wheel steering angle from the steering wheel steering angle sensor 11, and a detection signal corresponding to the inclination of the motorcycle 9 from the vehicle body inclination sensor 12. A control circuit 13 for transmitting a display control signal is provided to the display circuit 8 of 11, and the control circuit 13 is configured to transmit a signal to the display circuit 8 by wiring or wirelessly.

In the present embodiment, the curve traveling determination means includes the steering wheel steering angle sensor 11, the vehicle body inclination sensor 12 and the control circuit.
13 and the display stopping means is the control means.
It is composed of 13.

As shown in FIG. 2, the vehicle speed sensor 10 is adapted to use a sensor for an existing speedometer mounted on the front part of the vehicle body of the motorcycle 9, and the vehicle body inclination sensor 12
Is a gyro-type sensor that is hardly influenced by the lateral G, and is attached to the seat 14 of the motorcycle 9 and outputs the above detection signal according to the inclination of the motorcycle 9. Further, as shown in FIGS. 3 and 4, the steering wheel steering angle sensor 11 is a steering wheel of the motorcycle 9.
It is attached to the front fork stabilizer 17 for holding the front fork 16 connected to the 15 part, and the detection gear 19 attached to the detection shaft 18 of the potentiometer as the steering wheel steering angle sensor 11 has the handle 15 A drive gear 21 attached to the outer periphery of the main shaft 20 of a part is meshed. And the above handle 15
The detection shaft 18 is rotated via the drive gear 21 and the detection gear 19 in accordance with the rotation angle of the steering wheel, thereby detecting the steering angle of the steering wheel 15 and outputting the detection signal corresponding to the steering wheel steering angle. It is like this.

Next, the operation of this embodiment will be described with reference to FIG.

In the present embodiment, the steering wheel steering angle sensor 11 or the vehicle body inclination sensor 12 detects whether or not the motorcycle 9 is traveling on a curve (step S1) and detects that the motorcycle 9 is not traveling on a curve. In this case, the speed of the vehicle body is detected by the speed sensor and is output to the control circuit 13. Based on the output signal of the control circuit 13, the display circuit 8 forms a display image on the liquid crystal cell of the display device, and the display image is displayed. An image is formed inside the shield for visual recognition (step S2).

Then, the steering wheel steering angle sensor 11 detects that the steering wheel 15 has been turned on a flat road for a certain amount or more and the motorcycle 9 is in a posture in which the vehicle is traveling in a curve. When the control circuit 13 determines that the motorcycle 9 is in a curve traveling state and the motorcycle 9 is traveling in a curve, the output from the control circuit 13 is stopped, whereby the display circuit The output of 8 is stopped, and the display image on the shield is turned off (step S3).

Therefore, in this embodiment, it is determined whether or not the motorcycle 9 is traveling on a curve based on the attitude of the motorcycle 9 represented by the detection signal of the steering wheel steering angle sensor 11 or the vehicle body inclination sensor 12, and the result is determined. When the vehicle is traveling on a curve, the display information displayed on the shield of the helmet 1 can be turned off when the motorcycle 9 is traveling on a curve. Therefore, when traveling on a curve, the display information does not obstruct the driver's view. , It is possible to drive on a curve very safely.

In addition, in the present embodiment, the control of the display information at the time of traveling on a curve when driving the motorcycle 9 has been described. However, for example, when the display of the HUD method is performed on an automobile or the like, the traveling on the curve is similarly performed. It is possible to turn off the display information at times. In this case, the vehicle body inclination sensor 12 becomes unnecessary, and only the steering wheel steering angle sensor 11 may be provided.

〔The invention's effect〕

As described above, in the display device according to the present invention, when the curve traveling determination means determines that the vehicle is traveling on a curve from the state of the posture of the vehicle being driven, the display suspension means is a display device. Since the display of information by is stopped, whether or not the vehicle is traveling on a curve can be reliably determined based on the traveling posture of the vehicle rather than the traveling speed of the vehicle, and moreover, when traveling on a curve. Thus, the displayed information does not hinder the driver's field of view, and it is possible to perform an extremely safe curve traveling.

[Brief description of drawings]

1 to 5 each show an embodiment of the present invention. FIG. 1 is a block diagram of a display device, FIG. 2 is a plan view of a motorcycle, and FIG. 3 is an exploded view of a handle portion of the motorcycle. FIG. 4 is a perspective view, FIG. 4 is a perspective view of a steering wheel steering angle sensor attached to a steering wheel portion of a motorcycle, FIG. 5 is a flowchart showing control of display information, and FIG. 6 is a configuration diagram showing a helmet to which a conventional display device is applied. Is. DESCRIPTION OF SYMBOLS 1 ... Helmet, 4 ... Display device, 8 ... Display circuit, 9 ... Motorcycle, 10 ... Vehicle speed sensor, 11 ... Steering wheel angle sensor, 12 ... Vehicle body inclination sensor, 13 ... Control circuit.

Claims (1)

(57) [Claims] 1. A display device for displaying predetermined information is provided inside a helmet, and the display information from the display device is reflected by a shield of the helmet toward a viewer side to display a virtual image of the display information on the display device. In a display device configured to visually recognize, a curve traveling determination means for determining whether or not the vehicle is traveling on a curve from the state of the posture of the vehicle being driven, and the vehicle is traveling on the curve. And a display stopping means for stopping the display of the information by the display device when the curve running judging means makes a judgment.