JP2001142139A - Periphery monitoring device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent soiling of a periphery monitoring optical system that takes in external light. SOLUTION: When an external light detecting part 10 is driven by a driving mechanism part 30, a soil wiping part 20 arranged on the front part of a vehicle 1 so as to be adjacent to the periphery of the external light take-in part 12 of the external light detecting part 10 including a periphery monitoring optical system is brought into contact with the external light take-in part 12, then, the part 12 is cleaned by the part 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle mounted on a vehicle,
The present invention relates to a vehicle periphery monitoring device that monitors the periphery of the vehicle.

[0002]

2. Description of the Related Art Conventionally, this type of vehicle periphery monitoring device comprises, for example, a CCD camera or the like. The CCD camera is fixed to a vehicle body of a bus to take in external light behind the vehicle, and this external light is imaged. In some cases, the display is displayed on a display device such as a monitor to monitor the rearward view with poor visibility.

[0003]

However, since the vehicle periphery monitoring device is fixed to the outside of the vehicle, the optical system for taking in external light and the like is liable to be stained by mud splashes or the like. There is a problem in that the optical system becomes cloudy, which hinders the capture of external light. The present invention has been made in view of the above problems, and has as its object to provide a vehicle periphery monitoring device that can prevent contamination of a periphery monitoring optical system that captures external light.

[0004]

In order to achieve the above object, the present invention provides a peripheral monitoring optical system that is mounted on a vehicle and captures external light around the vehicle as an image from an external light capturing unit. Monitoring around the vehicle. Driving means for driving the optical system for monitoring the periphery from the inside of the vehicle to the outside or from the outside to the inside of the vehicle; And a contact means for contacting the external light intake section when the external optical system is driven, and cleaning the external light intake section when the peripheral optical system is driven.

[0005] That is, for example, the contact means disposed at the front portion of the vehicle so as to be adjacent to the periphery of the external light intake portion,
When the peripheral monitoring optical system is driven by the driving unit, the external light capturing unit is cleaned by contacting the external light capturing unit to prevent adhesion of dirt.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a vehicle periphery monitoring device according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram showing the overall configuration of a vehicle periphery monitoring device according to the present invention. In the figure, a vehicle periphery monitoring device 2 of the present invention is mounted on a front portion of a vehicle 1. The vehicle periphery monitoring device 2 includes an external light detection unit 10, a dirt wiping unit 20 constituting a contact unit of the present invention, a driving mechanism unit 30 for vertically moving the external light detection unit 10, and a monitoring monitor 40. And an ECU 50 that is a drive control unit.

As shown in FIG. 2, the external light detecting unit 10 captures external light around the vehicle as an image. For example, the external light detecting unit 10 has a fisheye-shaped lens 11a and a peripheral monitoring optical system (not shown) having a reflecting mirror (not shown). ), A transparent cover 12 that constitutes the external light capturing unit of the present invention, and covers the optical system 11,
The drive mechanism 30 includes a CD camera 13 and a protective cover 14 for preventing dirt from entering from outside.
Is moved up and down inside the vehicle 1 and outside the vehicle 1. The external light detection unit 10 captures an image around the vehicle by the optical system 11 when the external light detection unit 10 projects outside the vehicle, and sends the image to the CCD camera 13. The external light detection unit 10 is attached to, for example, the fender mirror 3 at the front of the vehicle via a dirt wiping unit 20 (see FIGS. 3 and 4).

[0008] As shown in FIG.
For example, it has a configuration having a mounting member 21 made of a hollow cylindrical waterproof packing and a dirt wiping member 22 made of rubber, cloth, or the like provided on the inner peripheral surface of the mounting member 21. Is provided adjacent to the periphery of the transparent cover 12, and is provided when the optical system 10 is moved.
Contacting the surface and wiping this surface to prevent the adhesion of dirt. The dirt wiping member 22 is attached to the mounting member 21.
Is detachably attached to the fender mirror 3 and can be replaced at the time of maintenance or the like.

In addition, the external light taking-in part of the present invention is a part of the optical system 11 (for example, the lens 11) instead of the transparent cover 12.
It is also possible to configure according to a). In this case, the dirt wiping unit 20 may have a structure for wiping the surface of the lens 11a. The driving mechanism 30 is shown in FIGS.
As shown in FIG. 7, a moving plate 31 on which the external light detection unit 10 is mounted, a support column 32 which rotates by driving a motor 33 and supports the moving plate 31 so as to be able to move up and down with the rotation, and a gear 34. , 35 via support 32
And a limit switch 36 for setting upper and lower limits of movement of the moving plate 31.
37. Moving plate 31 and support 3
2 has a threaded threaded portion, and the threaded portion is rotatably meshed with each other. When the column 32 rotates via the gears 34 and 35 by the driving of the motor 33, the moving plate 31 moves up and down with this rotation,
The external light detection unit 10 can move from the inside of the vehicle to the outside of the vehicle and from the outside of the vehicle to the inside of the vehicle.

The monitoring monitor 40 is provided, for example, in a cowl portion in a vehicle compartment, and displays an image captured from the CCD camera 13 of the external light detection unit 10. ECU50
Is for controlling the drive of the motor 33 of the drive mechanism 30. For example, a speed sensor 51 and an ignition key 52 for detecting the running speed of the vehicle are connected to each other (see FIG. 1). hand,
The speed signal and the ignition signal are output to the drive mechanism unit 30. In this embodiment, the ECU 50 outputs a high-level speed signal when the traveling speed detected by the speed sensor 51 is 5 km / h or more, for example, and outputs a high-level ignition signal when the ignition key 52 is turned on. Output. The ECU 50 outputs a low-level speed signal when the vehicle is traveling backward, for example.

FIG. 5 is a circuit diagram showing a drive circuit in the drive mechanism. In FIG. 5, the drive circuit is connected to a battery mounted on the vehicle, and a battery line 6
A voltage is always applied to 0 (+ B). Motor 33
Is connected to the battery line 6 via the contacts 61, 61, respectively.
0 and connected to the battery line 60 via the contacts 62 and 62, respectively. That is, the motor 33 rotates in the forward direction when the contacts 61, 61 are on and the contacts 62, 62 are off, and when the contacts 61, 61 are off,
When the contacts 62 are turned on, they rotate in the opposite direction.

The speed signal line 63 is connected to a battery line 60 via a coil 64. When a high-level speed signal is output from the ECU 50 to the coil 64, a current flows. The ignition signal line 65 is
The ECU 50 is connected to the battery line 60 via a contact 66 and a coil 67. A high-level ignition signal is output from the ECU 50 to the coil 67, and a current flows when the contact 66 is turned on.

The battery line 60 includes a motor 3
3 and a contact 68 is connected in parallel with the contact 68.
A terminal 69 is connected to a coil 69 via a limit switch 36. A contact 68 is connected to the terminal 69 and a current flows when the limit switch 36 is turned on. Further, a coil 70 is connected to the terminal b side of the contact 68 via a limit switch 37, and a current flows to the coil 70 when the contact 68 is connected to the terminal b and the limit switch 37 is turned on. .

The contact 61 and the coil 69, the contact 62 and the coil 70, the contact 66 and the coil 64, and the contact 68 and the coil 67 each constitute a relay. Contact 61, 62
Turns on when a current flows through the coils 69 and 70, connects the battery line 60 to the motor 33, and turns off when no current flows through the coils 69 and 70. 33 is disconnected. The contact 66 is turned on when no current flows through the coil 64, and connects the ignition signal line 65 to the battery line 60. The contact 68 is connected to the contact a when a current is flowing through the coil 67,
Is connected to the contact b when no current flows through the contact b. The state of each circuit element described above can be shown in Table 1.

[0015]

[Table 1]

That is, in the initial state, since the ignition key 52 is off and stopped, the ignition signal is low even if the contact 66 is on, and no current flows through the coil 67. Therefore, the contact 68 is connected to the terminal b, so that a current flows through the coil 70 and the contact 6
2, 62 are turned on, the motor 33 rotates in the reverse direction, and the external light detection unit 10 can be lowered into the vehicle.
When the moving plate 31 contacts the limit switch 37 and the switch 37 is turned off, the coil 70 is not energized and the motor 33 stops.

When the vehicle is stopped, the ignition key 52 is on, so that the ignition signal goes high.
A current flows through the coil 67. Therefore, the contact 68 is connected to the terminal a, a current flows through the coil 69, the contacts 61 and 61 are turned on, the motor 33 rotates in the forward direction, and the external light detection unit 10 rises to the outside of the vehicle. Can be done. And the moving plate 31 is the limit switch 3
When the switch 36 is turned off by contact with the coil 6, the coil 69 is not energized, and the motor 33 stops.

In the forward running state, the running speed is 5 km /
When the speed exceeds h, the speed signal goes high, so that current flows through the coil 64, the contact 66 is turned off, and no current flows through the coil 67. Accordingly, as in the initial state, the contact 68 is connected to the terminal b, and a current flows through the coil 70 to turn on the contacts 62, 62, the motor 33 rotates in the reverse direction, and the external light detection unit 10 Can be lowered into the vehicle.

When the vehicle is traveling backward, the ignition signal is at a high level and the speed signal is at a low level. Therefore, as in the stopped state, the contact 68 is connected to the terminal a, and a current flows through the coil 69 to turn on the contacts 61, 61, the motor 33 rotates in the forward direction, and the external light detection unit 10 Can be raised outside the vehicle.

In the traction state, no current flows through the coil 67 since the speed signal is at a high level. Accordingly, as in the forward running state, the contact 68 is connected to the terminal b, and a current flows through the coil 70 to turn on the contacts 62, 62, the motor 33 rotates in the reverse direction, and the external light detecting unit 1
0 can be lowered into the vehicle. in this way,
In the present embodiment, the external light detection unit of the vehicle periphery monitoring device is lowered into the vehicle or ascended to the outside of the vehicle according to the movement and traveling speed of the ignition. Since the surface of the transparent cover 12 can be wiped off by the dirt wiping unit 20 that comes into contact with the surface, it is possible to prevent contamination of the surroundings monitoring optical system that captures external light, and the external light detection unit always obtains a clear image. be able to.

In this embodiment, since the external light detecting section is housed inside the vehicle during traveling, the external light capturing section can be protected from being soiled or damaged by mud splash or the like. Further, in the present embodiment, since the external light detection unit is stored inside the vehicle even during parking, theft can be prevented. The present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. In the present embodiment, the case where the vehicle periphery monitoring device is attached to the fender mirror has been described. However, for example, the monitoring device can be attached to a bumper, a roof, or the like.

[0022]

As described above, according to the present invention, the contact means is provided on the vehicle so as to be adjacent to the periphery of the external light taking-in section.
At the time of driving the periphery monitoring optical system by the driving unit, the contact unit comes into contact with the external light capturing unit, so that the periphery monitoring optical system that captures external light can be prevented from being stained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a vehicle periphery monitoring device according to the present invention.

FIG. 2 is a partially enlarged view of an external light detection unit and a dirt wiping unit shown in FIG.

FIG. 3 is a configuration diagram showing a driving state of a driving mechanism unit shown in FIG. 1;

FIG. 4 is a configuration diagram showing a driving state of a driving mechanism unit.

FIG. 5 is a circuit diagram showing a drive circuit in the drive mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Vehicle periphery monitoring device 3 Fender mirror 10 External light detection unit 11 Perimeter monitoring optical system 12 Transparent cover 13 CCD camera 14 Protective lid 20 Dirt wiping unit 21 Mounting member 22 Dirt wiping member 30 Drive mechanism unit 31 Movement Plate 32 Support 33 Motor 34, 35 Gear 36, 37 Limit switch 40 Monitoring monitor 50 ECU 51 Speed sensor 52 Ignition key 60 Battery line 61, 62, 66, 68 Contact 63 Speed signal line 64, 67, 69, 70 Coil 65 Ignition signal line

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 15/00 G03B 15/00 V H04N 5/225 H04N 5/225 C 7/18 7/18 J F term (Reference) 2H105 AA06 AA11 5C022 AA04 AC63 AC66 5C054 AA01 CA04 CC03 CD01 CE01 CF01 EA01 HA30

Claims (3)

[Claims] 1. A vehicular periphery monitoring device that is mounted on a vehicle and monitors the periphery of the vehicle by using a periphery monitoring optical system that captures external light around the vehicle as an image from an external light intake unit. A driving unit for driving the monitoring optical system from the inside of the vehicle to the outside or from the outside to the inside of the vehicle, the driving unit being disposed on the vehicle so as to be adjacent to the periphery of the external light capturing unit, Contact means for contacting the external light capturing unit when the device is driven, and cleaning the external light capturing unit when the peripheral monitoring optical system is driven. 2. The vehicle periphery monitoring device according to claim 1, wherein the driving unit drives the periphery monitoring optical system according to a speed of the vehicle. 3. The vehicle periphery according to claim 1, wherein the driving unit is linked with an ignition of the vehicle, and drives the periphery monitoring optical system in accordance with the movement of the ignition. Monitoring device.