JPH03255419A - Display device - Google Patents

Abstract

PURPOSE:To prevent display information from hindering the field of vision of a driver at the time of running on a curve by providing a control circuit and extinguishing display information which is displayed on the shield of a helmet, at the time of running his vehicle on a curve. CONSTITUTION:The image of display information based on a prescribed signal of the speed or the like is formed on the inside of the shield of a helmet 1 by a display device 4 to form a virtual image in a prescribed position on the outside of the shield, and this virtual image is visually recognized by a visual recognizer to recognize a display picture. A control circuit 13 is provided to extinguish display information at the time of running the driven car on a curve. Thus, display information is prevented from hindering the field of vision of the driver, and the vehicle is safely run on the curve.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device, particularly a display device built into a helmet,
The present invention relates to a display device that allows display information from a display device to be viewed while wearing a helmet.

[Conventional technology]

The present inventors provided a display device such as a liquid crystal cell that displays desired display information inside the helmet, and used this display device to form an image of display information such as speed on the inside of the shield portion of the helmet. We have developed a so-called HUD type display device in which a virtual image is formed at a predetermined position on the outside of the shield, and the displayed image is recognized by the viewer viewing this virtual image.

FIG. 6 shows a helmet with a built-in display device of this kind, and the front of the helmet 1 has an opening 2 for viewing
is formed, and a transparent shield 3 is attached to the opening 2 portion.

In addition, a display device 4 bent in the shape of a square is arranged on the inside of the front part 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. It is arranged so that

A liquid crystal cell 5 serving as a display for displaying desired display information is disposed at the lower end portion of the display device 4, and this liquid crystal cell 5 applies a voltage to a predetermined portion of the cell 5 based on the desired information. By applying this voltage, only the portion to which this voltage is applied becomes transparent, allowing light from a light source (not shown) disposed below the liquid crystal cell 5 to pass therethrough. Further, a reflective plate 6 is disposed inside the oil bottom portion of the display device 4, and a reflection plate 6 is disposed at the upper end of the display device 4.
An optical unit 7 comprising a plurality of lenses is provided to form an image of display information from the liquid crystal cell 5 onto the inner surface of the shield 3.

In the above display device, light is irradiated from the light source to the back side of the liquid crystal cell 5, and a voltage is applied to the liquid crystal cell 5 based on predetermined display information to make the display transparent.
Light from the light source passes through the display portion of the liquid crystal cell 5 to form a display image. This display image is reflected by the reflection plate 6 and then focused on the inside of the shield 3 via the optical unit 7, thereby forming a virtual image at a predetermined position on the outside of the shield 3. The displayed image can be recognized by the viewer viewing the image.

In addition, in the above-mentioned display device, the display information is imaged on one corner of the shield so as not to obstruct the driver's field of view when driving.

[Problem to be solved by the invention]

However, in the above conventional display device, the helmet l
Since the display information is displayed at the corner of the shield 3 of There is a problem in that the driver's viewpoint overlaps with the driver's viewpoint, and the displayed information obstructs the driver's field of view, making it extremely dangerous to drive around curves.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a display device that allows a driver to safely drive around a curve without obstructing the driver's field of view with displayed information.

(Means for Solving the Problems) In order to achieve the above object, a display device according to the present invention includes a display device that displays predetermined information inside a helmet,
In a display device in which display information from this display device is reflected to the viewer side by the shield of the helmet, and a virtual image of the display information on the display device is visually recognized, when the vehicle being driven runs around a curve. The device is characterized in that a control circuit is provided to control the display information to turn off when the display information is turned off.

[For production]

According to the present invention, a virtual image is formed at a predetermined position on the outside of the shield by forming an image of display information based on a predetermined signal such as speed on the inside of the shield of the helmet using the display device. The displayed image can be recognized by the viewer viewing it.

Then, when the driving vehicle runs around a curve, the control circuit controls the
Since the display information is turned off, the driver's view is not obstructed by the displayed information when the vehicle is traveling on a curve, and the vehicle can travel on a curve extremely safely.

〔Example〕

Embodiments 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 a helmet 1, a display device 4 consisting of a display device such as a liquid crystal cell, a light source, etc. is built-in. 4 is connected to a display circuit 8 that sends predetermined display information to the display.

In addition, a vehicle speed sensor 1 is installed on the body of a vehicle such as an auto high 9.
0. Handle steering angle sensor 11 and vehicle body tilt sensor 1
A control circuit 13 is provided which sends a display control signal to the display circuit 8 of the helmet 1 based on the detection signal from the helmet 2, and the control circuit 13 sends the signal to the display circuit 8 by wire or wirelessly. It looks like this.

As shown in FIG. 2, the vehicle speed sensor 1O utilizes an existing speedometer sensor attached to the front of the motorcycle 9, and the vehicle body tilt sensor 1
Reference numeral 2 is a gyro type sensor that is not easily affected by lateral G, and is designed to be attached to the seat 14 of the motorcycle 9. Further, as shown in FIGS. 3 and 4, the handlebar steering angle sensor 11 is attached to a front fork stabilizer 17 for holding a front fork 16 connected to a handlebar 15 portion of a motorcycle 9. , this steering wheel steering angle sensor 11
A drive gear 21 attached to the outer periphery of a main shaft 20 of the handle 15 portion is meshed with a detection gear 19 attached to a detection shaft 18 of the potentiometer. The detection shaft 18 is rotated via the drive gear 21 and the detection gear 19 in accordance with the rotation angle of the handle 15, thereby detecting the steering angle of the handle 15.

Next, the operation of this embodiment will be explained with reference to FIG. 5.

In this embodiment, the handle steering angle sensor 11 or the vehicle body tilt 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 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 this display image is formed on the inside of the shield for visual recognition. Step S2).

Then, the steering wheel steering angle sensor 11 detects that the steering wheel 15 has been turned more than a certain level on a flat road, or the vehicle body tilt sensor 12 detects that the motorcycle 9 has tilted more than a certain level, and the motorcycle 9 has turned the curve. When it is detected that the vehicle is running, the output from the control circuit 13 is stopped, and thereby the output from the display circuit 8 is stopped, and the display image of the shield is turned off (step S
3).

Therefore, in this embodiment, since the display information displayed on the shield of the helmet 1 can be turned off when the motorcycle 9 is running on a curve, the display information does not obstruct the driver's view when the motorcycle 9 is running on a curve. It is possible to drive around curves extremely safely.

In this embodiment, the control of display information when driving the motorcycle 9 while driving around a curve has been described. However, for example, when driving a car or the like using a HUD method, the display information can be similarly controlled when driving around a curve. It is also possible to turn off the display information at certain times. In this case, the vehicle body tilt sensor 12 becomes unnecessary, and the steering angle sensor 11 of the steering wheel becomes unnecessary.
It is only necessary to provide only one.

〔Effect of the invention〕

As described above, the display device according to the present invention uses the control circuit to turn off the display information displayed on the shield of the helmet when the vehicle is running on a curve. This provides effects such as being able to drive around curves extremely safely without obstructing visibility.

[Brief explanation of drawings]

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

Claims (1)

[Claims] A display device for displaying predetermined information is disposed inside the helmet, and the display information from the display device is reflected to the viewer by the shield of the helmet, and the display information on the display device is reflected to the viewer side by the shield of the helmet. A display device for visually recognizing a virtual image, characterized in that the display device is provided with a control circuit that controls turning off the display information when a vehicle being driven is traveling around a curve.