JPH0743179A - Data display device on vehicle - Google Patents

Abstract

PURPOSE:To display the data related to the operation of a vehicle in the front visual field of a helmet and improve the safety of driving by providing a signal processing device for processing and transmitting a data signal and a display device. CONSTITUTION:For the data, the power and signal to a display device 3 are transmitted from a signal processing device 4 through a wiring 5. A plug 6A on the top end of the wiring 5 is connected to a receptacle 6B on the vehicle side. When an occupant wears a helmet 2 and gets on a motorcycle, the plug 6A is connected to the receptacle 6B, and an earth is removed when he gets off the vehicle. When the plug 6A is fitted to the receptacle 6B, a magnet 12 in the plug center part attracts the opposed surface of the receptacle 6B and an iron piece 11 buried therein to connect three wirings. When the plug 6A is pulled by the force more than the attracting force of the magnet 12, the connection is released. Thus, at an abnormality such that the motorcycle 1 is fallen, the plug 6A is released from the receptacle 6B, and the occupant is never exposed to a danger such that the wiring 5 constrains the occupant.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data display device for optically projecting operational data such as traveling speed and engine speed of a vehicle by visible light to a position visible to a vehicle occupant. In particular, the present invention relates to an apparatus for displaying the above-mentioned data in the field of view of a tower occupant in a vehicle in which the tower occupant wears a helmet and rides on the tower, such as a motorcycle.

[0002]

2. Description of the Related Art In general, data concerning the operation of a motorcycle is displayed by an instrument arranged near the steering wheel of the vehicle. Due to the structure of the vehicle, these instruments cannot be placed in the forward field of view while the driver is driving,
It is very dangerous for the trainees to turn their eyes to look at the instrument while driving. Therefore, it is conceivable to provide a data projection means on the helmet worn by the continuous turner and optically project the data into the driver's visual field.
The following are prior arts related to this relationship.

JP-A-51-132600, JP-A-63-256706, JP-A-63-303107
Japanese Patent Laid-Open No. 64-49016, Japanese Patent Laid-Open No. 1-1011
No. 33019, JP-A-3-39924, JP-A-5-85446, and JP-A-3-29888 are within the view of a helmet worn by a tower passenger of an aircraft, an automobile, or a motorcycle. , A display device for displaying data.

[0004]

SUMMARY OF THE INVENTION In the above-mentioned prior art,
It is intended to display complicated display data, and a CRT is mainly used as a display source, and a complicated optical system including a prism and a large number of lenses is used. In the data display of the motorcycle of the present invention, data relating to the vehicle speed, the engine speed, and the like of the vehicle are displayed in small size,
It is intended to be displayed in the field of view with a simple structure, and the display device needs special consideration for size reduction and weight reduction.

In the above-mentioned prior art, most of the signal transmission from the vehicle side to the helmet is performed by a cord connected by a connector. In the case of aircraft, there is no principle to remove the helmet while riding the tower,
Also, since getting on and off is not so frequent, there is no particular problem with the cord connected by the connector. However, in the case of a motorcycle, the tower passengers often get on and off, and the cord is exposed to the airflow during driving,
It is necessary to securely bind the tower passengers, which makes mounting and dismounting difficult when getting on and off. Further, in the case of an abnormality, for example, when the vehicle falls down, the helmet remains connected to the vehicle side with the cord, which is very dangerous.

As an improvement on this point, Japanese Patent Laid-Open No. 2-2
In Japanese Patent No. 83584, a transmitter is placed on the vehicle side to transmit in a cone shape covering a helmet, and a receiver and a power source are placed on the helmet side to wirelessly connect between the vehicle and the helmet. In this case, the tower occupants will be freed from the trouble of connecting and disconnecting the cord when getting on and off, and the risk of falling will be eliminated, but since the receiver and power supply will be mounted on the helmet side, the size and Mass increases. According to the present invention, the number of cords is reduced so that connection and removal at the time of getting on and off can be made extremely simple, it is not necessary to put a power source on the helmet side, and the display device can be downsized and lightened.

[0007]

In order to solve the above problems, in the present invention, a converter for generating a data signal on the vehicle side, and a signal processing for the data signal and sending it to the helmet side. A signal processing device is provided. On the helmet side, a display comprising a conversion means for receiving the data signal and converting it into an optical display signal by visible light, and a projection means for projecting and displaying the display signal which is the output of the conversion means in the front view of the tower passenger. Provide a device. Further, between the signal processing device and the display device, a wiring consisting of only three electric wires, that is, a power line, a signal line and a ground line is provided, and the wiring is naturally subjected to a pulling force more than a predetermined amount. It should be detached by connecting means that comes off.

[0008]

The data signal is generated from the converter for generating the data signal on the vehicle side, and is processed in the signal processing device so that the data signal can be sent by one signal line. From the signal processing device, a data signal and electric power are sent to the display device on the helmet side through the wiring. In the display device,
The data signal is converted into an optical display signal by visible light, and is further projected and displayed in the front view of the occupant. When the tower passenger gets off the vehicle, the connection is broken by pulling the connection means of the wiring with a force equal to or more than the predetermined force.

[0009]

Embodiments of the present invention will be described with reference to the drawings. Referring to FIG. 1, an example in which the present invention is applied to a motorcycle is shown. A signal processing device (4) is arranged in the front center part of the vehicle body of the motorcycle (1). A motorcycle occupant wears a helmet (2), and the helmet (2) is provided with a display device (3).

The display contents of the display device (3) include a display of data relating to vehicle operation such as the traveling speed of the motorcycle, the engine speed, the remaining amount of fuel, and the like. Can also be displayed. In this embodiment, a case where the traveling speed is displayed will be mainly described.

From the signal processing device (4) attached to the motorcycle, the above-mentioned display data is sent to the display device (3) attached to the helmet (2) through the wiring (5). The data is converted into visible light data by the display device (3), projected into the forward view of the tower passenger, and displayed. The wiring (5) is connected to the signal processing device (3) by an easily removable plug (6A) and a receptacle (6B).

FIG. 2 shows the display device (3) on the helmet (2).
FIG. 3 is a front view in which is attached, and FIG. 3 is a sectional view taken along line AA of FIG. The display (7) is composed of a light emitting element such as an LED, and is for converting the above-mentioned data relating to the operation of the vehicle into a visible light number, a bar graph or the like for light emission display. The optical system (8) is for forming a virtual image of the display data converted into visible light at a distance of 30 cm to infinity to make it easier for the tower occupants to see the image. It is composed of a convex lens and a Fresnel lens.
Visible light emitted from the optical system (8) is projected on the semitransparent mirror (10), reflected and enters the eyes of a tower passenger. Since the tower occupant sees the front view through the semitransparent mirror (10), the tower occupant also sees the projected display data in the front view. Since the display data forms an image at 30 cm to infinity,
The occupant of the tower can easily view the display data while viewing the forward field of view, with little adjustment of the line of sight or the viewing distance.

As described above, the power and the signal to the display device (3) are sent from the signal processing device (4) through the wiring (5). The plaque (6A) at the tip of the wiring (5) is connected to the vehicle-side receptacle (6B). A tower passenger wears a helmet (2) and plugs (6) when riding on a motorcycle.
Connect A) to the receptacle (6B) and disconnect when getting off. Therefore, the plaque (6A) and the receptacle (6
It is necessary to be easy to attach and detach with B). Also, the number of wires (5) should be as small and light as possible so as not to hinder driving. Also, in the event of an abnormality such as a fall, the plug (6A) and receptacle (6B)
Must be naturally disengaged. In order to meet these requirements, the wiring has only three lines, that is, a signal line, a power line, and a ground line, and has a structure of a plug (6A) and a receptacle (6B) that are easily removable. This is shown in FIG.

In FIG. 4, when the plug (6A) is fitted into the receptacle (6B), the magnet (1
2) sucks the iron piece (11) embedded in the opposite surface of the receptacle (6B), and the three wires are reliably connected. Plug (6A) with force greater than the attractive force of the magnet (12)
If you pull, the connection will be released. Therefore, for example, automatic 2
In the event of an abnormality such as a wheeled vehicle falling, plug (6
A) does not come off the receptacle (6B) and the wiring (5) binds the tower occupant and does not pose a danger. The connection shown in FIG. 4 has been described by using the magnet (12) and the iron piece (11) as an example. However, these may be replaced with another one having an appropriate attracting force such as a velcro tape.

In order to use only one signal line, it is necessary to devise a method of sending a signal from the signal processing device (4) to the display device (3). The case where the speed is displayed by the 7-segment numeral display will be described with reference to the functional block diagram of FIG.

In FIG. 5, the speed converter (13) outputs the number of pulses proportional to the input speed of the speedometer (25) by the structure described later. The counter (14) counts the number of pulses for a predetermined time, for example, 0.4 seconds. The speedometer (25) is defined by the JIS standard to indicate 60 km / h when the input rotation is 1400 rpm. Adjust the above defined time to 1
At 400 rpm, 60 pulses are output.
The counter (14) outputs the counted number of pulses in the form of a BCD signal. The parallel-serial converter (15) sequentially takes out parallel BCD signals of speed figures from the higher order,
It is for making a serial signal.

The transmission timing signal circuit (16) is a circuit for generating a timing signal for the counter (14) and the parallel-serial converter (15), and at a predetermined time interval, for example, 0.5 second intervals. Count and convert. The output of the parallel / serial converter (15) is sent to the display device (3) by being placed on the signal line in the wiring (5).

The serial / parallel converter (17) converts a serial digital signal back into a parallel signal and represents the traveling speed BC.
D signal. This signal is input to the latch circuit (18). The reception timing circuit (21) generates the same timing signal as the transmission timing circuit (16) and sends it to the serial / parallel converter (17) and the latch circuit (18). The latch circuit (18) updates the BCD signal sent at a predetermined time interval, for example, every 0.5 seconds, and holds it until the next signal is sent.

The output of the latch circuit (18) is sent to a 7-segment converter (19) and converted into a 7-segment number signal. The output of the 7-segment converter (19) causes the 7-segment numeral display (7A) to emit light to display visible light. The reception timing circuit (21) is synchronized with the update timing so as not to shift the timing from the transmission timing circuit (16). As described above, by providing a slight electric circuit on the display device (3) side, the signal line of the wiring (5) can be only one.

FIG. 6 shows a perspective view of the speed converter (13). The speedometer (22) is installed in the motorcycle. Rotation of the wheels is transmitted by a speedometer wire (23). In a normal motorcycle, a speedometer wire (2
3) is directly connected to the speedometer (22) to display the speed. In this speed converter (13), the speedometer (22)
And the light shielding plate (25) is inserted between the speedometer wire (23) and rotated by the speedometer wire (23). The photo interrupter (24) is attached to the light shielding case (26) and fixed to the case portion of the speedometer (22). The light-shielding case (26) has been added for the sake of clarity in FIG.
It is shown as a dotted line so that the inside can be seen. In the photo interrupter (24), the light emitter and the light receiver face each other through the groove, and when the light blocking plate (25) passes through the groove, light blocking and light transmission are repeated and an electric pulse signal is output.

The display content can be changed by replacing the speed converter (13) with a converter for the engine speed or a converter for the remaining amount of fuel. Also, a 7-segment converter (19) and a 7-segment number display (7A)
Can be replaced with a bar graph display by substituting other objects such as a converter and a display for the bar graph.

[0022]

As described above, according to the present invention, the vehicle side is provided with the converter for generating the signal of the data regarding the operation of the vehicle and the signal processing device (4) for processing and sending out the data signal. The side receives the data signal,
Since the display device (3) including the conversion means for converting the light display signal by visible light and the projection means for projecting and displaying the display signal output from the conversion means in the forward view of the tower passenger is provided, Data on vehicle operation can be displayed in the front view of the helmet worn by the tower passengers,
The safety of continuous rotation is improved.

Between the signal processing device (4) and the display device (3), only three wirings are provided, and the plug (6A) and the receptacle (6B) are pulled by a force higher than a predetermined force. At the time, the connection is disconnected, so the connection operation for getting on and off by the tower passenger is easy, and at the time of an abnormality, for example, when the person falls, the connection is disconnected and Because you are not in danger.

Since the number of wires (5) is small, it is light and does not hinder operation. Further, since power is supplied from the vehicle side to the helmet side, it is not necessary to provide a power source on the helmet side, and the size can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a motorcycle to which the present invention is applied.

FIG. 2 is a front view in which a display device (3) is attached to a helmet.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a perspective view of a plug (6A) and a receptacle (6B).

FIG. 5 is a functional block diagram of a signal processing device (4) and a display device (3).

FIG. 6 is a perspective view of a speed converter (13).

[Explanation of symbols]

 1: Motorcycle 2: Helmet 3: Display device 4: Signal processing device 5: Wiring 6A: Plug 6B: Receptacle 7: Display device 7A: 7-segment numeric display device 8: Optical system 9: Shield 10: Semi-transparent mirror 11: Iron piece 12: Magnet 13: Speed converter 14: Counter 15: Parallel / serial converter 16: Transmission timing circuit 17: Serial / parallel converter 18: Latch circuit 19: 7-segment converter 21: Reception timing circuit 22: Speedometer 23: Wire for speedometer 24: Photo interrupter 25: Light shield plate 26: Light shield case

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location G02B 27/02 Z 7036-2K G08C 19/00 J 6964-2F

Claims (1)

[Claims] (A) A converter mounted on a vehicle for generating a data signal relating to the operation of the vehicle, a signal processing device (4) for performing serial / parallel conversion processing of the data signal, and (b).
A circuit which is provided on a helmet worn by a passenger of a vehicle, receives a signal from the signal processing device (4) and performs serial / parallel conversion, and conversion means for converting the converted output into a display signal by visible light, A display device (3) provided with a projection means for projecting and displaying the visible light display signal in the front visual field of the tower passenger.
And (c) one signal line for sending the output signal of the signal processing device (4) connecting the signal processing device (4) and the display device (3), and from the signal processing device (4) One power line for sending electric power to the display device (4), and a wiring (5) consisting of one ground line for connecting the signal processing device (4) and the ground of the display device (3). Preparation and wiring (5)
Is a data display device in a vehicle, characterized in that it is connected through a connection means that is disconnected when a pulling force of a certain value or more is applied.