JP2001001850A - On-vehicle obstacle detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an on-vehicle obstacle detecting device having excellent visibility for indication parts indicating whether a vehicle obstacle is detected or not. SOLUTION: When an obstacle positioned behind a vehicle 10 is detected, a LED indicator 3 provided on a package tray 11 of the vehicle 10 illuminates for indication. A driver M knows the presence or absence of the obstacle positioned behind the vehicle 10 by the indication of the LED indicator 3 reflected on a reflector 4 installed at the rear ceiling of the vehicle 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle mounted on a vehicle,
The present invention relates to an in-vehicle obstacle detection device that detects an obstacle in a vehicle.

[0002]

2. Description of the Related Art Conventionally, there has been known an apparatus which detects an obstacle around a vehicle by an ultrasonic sensor attached to a bumper of the vehicle and notifies the driver of the vehicle.

[0003] As an example, there is an example in which an ultrasonic sensor attached to a rear bumper of a vehicle detects and informs an obstacle behind the vehicle to monitor the rear of the vehicle when the vehicle is backing. Here, when an obstacle is present, an LED indicator is turned on for notification, etc., and displayed, but when the vehicle is backing up, the driver normally looks backward, so the LED indicator is normally displayed. It is located behind the vehicle, for example, on a package tray in the case of a sedan in a passenger car.

[0004]

However, when a person sits on the rear seat of the vehicle, the above-mentioned LED indicator is hidden by the person, making it difficult for the driver to see.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an on-vehicle obstacle detection device with a good visibility of a display unit for displaying whether or not an obstacle of a vehicle has been detected. Is to do.

[0006]

According to a first aspect of the present invention, there is provided a vehicle control system comprising: a detection unit mounted on a vehicle for detecting an obstacle of the vehicle; and a detection unit provided behind a driver's seat. An in-vehicle obstacle detection device including a display unit for notifying a driver of a detected result is provided with a reflecting mirror for reflecting display contents of the display unit in a direction visible to the driver. Therefore, it is possible to prevent a situation in which the display content of the display unit is hidden by the driver and becomes invisible.

According to a second aspect of the present invention, in the first aspect of the present invention, the reflecting mirror reflects the display content of the display unit to each of the reflecting mirrors sequentially, and guides the display contents to a direction in which the driver can view. Is provided in plurality. Therefore, the driver can more easily see the display content on the display unit, and it is possible to further prevent the display content on the display unit from being hidden by the driver and becoming invisible.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an angle changing means for changing an angle of the reflecting mirror is provided. Therefore, it is possible to set so that the display content of the display unit reflected by the reflecting mirror is easy to see.

According to a fourth aspect of the present invention, there are provided a plurality of detectors mounted on a vehicle for detecting an obstacle of the vehicle, and a display unit attached to the vehicle for notifying a driver of a detection result detected by the detector. In the in-vehicle obstacle detection device provided, the display unit has a display surface and two mounting surfaces, and in each case where the vehicle is mounted on each mounting surface, a graphic indicating a vehicle provided on the display surface is provided. The position of the display surface with respect to the driver is changed while the front-rear direction is switched, and is provided around a figure showing the vehicle, and a position display means showing the position of the detection unit, and a figure showing the vehicle And front display means provided in the front and rear,
When an obstacle is detected by the detection unit, the position display unit displays a position corresponding to the detected detection unit, and the front display unit determines which of the graphics indicating the vehicle is ahead. Is displayed alternatively.
Therefore, the position of the detection unit at which the obstacle is detected is displayed around the figure showing the vehicle by the position display unit,
It is possible to know from the front display means which is ahead of the figure showing the vehicle, and the driver can quickly and accurately know where the obstacle is located in front of the vehicle.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 2 shows a state in which a vehicle-mounted obstacle detection device of the present invention is mounted on a vehicle. Reference numeral 2 denotes an ultrasonic sensor which is a detection unit attached to a bumper on the right rear side of the vehicle 10 and transmits an ultrasonic signal and receives a reflected signal reflected on an obstacle behind the vehicle 10. Reference numeral 1 denotes a control unit provided in the vehicle 10, which controls transmission of an ultrasonic signal transmitted from the ultrasonic sensor 2 as described later, and controls the vehicle 10 based on a signal received from the ultrasonic sensor 2. The presence or absence of an obstacle behind is determined, and when it is determined that an obstacle is present, the LED indicator 3 as a display unit provided at the rear of the vehicle 10 is turned on.

As shown in FIG. 3, the LED indicator 3 is provided on a package tray 11 at the rear of the vehicle 10. In the perspective view of FIG. 4, the above-described ultrasonic sensor 2,
The configuration of the control unit 1 and the LED indicator 3 is shown.

In FIG. 2, reference numeral 4 denotes a reflecting mirror provided on the ceiling at the rear of the vehicle 10, and a display content indicating whether or not the LED indicator 3 is turned on is reflected by the reflecting mirror 4 toward the driver's seat. Thereby, as shown in FIG. 1, the driver M sitting in the driver's seat 12 of the vehicle 10 can know the display content of the LED indicator 3 through the reflecting mirror 4. Therefore, even when a person sits on the rear seat and the display of the LED indicator 3 is hidden by the person sitting, the driver M can recognize the obstacle behind the vehicle 10 based on the display content of the LED indicator 3 reflected by the reflector 4. Can be known. Here, the control unit 1, the ultrasonic sensor 2, the LED indicator 3, and the reflecting mirror 4 constitute an on-board obstacle detecting device.

FIG. 5 shows a circuit configuration of the control unit 1 described above.
Shown in In FIG. 5, reference numeral 31 denotes a reference signal generation circuit that generates a reference signal for generating a timing of a transmission signal of an ultrasonic signal transmitted from the ultrasonic sensor 2, and 32 denotes a reference signal from the reference signal generation circuit 31. This is a control circuit that creates the time width of the received transmission signal. An oscillation circuit 33 generates a high-frequency signal for driving the ultrasonic sensor 2 from an output of the control circuit 32. The output of the oscillation circuit 33 is supplied to the ultrasonic sensor 2 via a driver 34, and an ultrasonic signal is output. .

An amplification circuit 38 amplifies a weak reflected signal, which is an ultrasonic signal transmitted from the ultrasonic sensor 2 reflected by an obstacle and received by the ultrasonic sensor 2 and converted into an electric signal by air vibration. The high frequency component of the amplified signal is removed by the detection circuit 37. Reference numeral 39 denotes a gate for determining whether or not a reflected signal has been received within a predetermined time from the transmission of the ultrasonic signal based on the reference signal from the reference signal generation circuit 31, and the level detection circuit 36 includes the detection circuit described above. 37 and the output of the gate 39, it is determined whether or not the input waveform of the reflected signal received within a predetermined time from the transmission of the ultrasonic signal exceeds a certain threshold value. The LED indicator 3 is operated via the LED drive circuit 35 assuming that there is an obstacle behind the vehicle.

FIG. 6 shows signal waveforms at various parts. 6A shows a transmission signal output from the driver 34, FIG. 6B shows an output signal from the amplification circuit 38, and FIG. 6C shows an output signal from the detection circuit 37.
FIG. 6D shows a gate time for determining the presence or absence of a reflected signal due to an obstacle. FIG. 6E shows a signal waveform of the reflected signal received within the gate time at a predetermined level S1.
It shows the state in which it is compared with. In each waveform diagram of FIG. 6, the horizontal axis represents time and the vertical axis represents signal level, and in FIGS. 6B and 6C, Q1 and Q2 represent reflected signals due to obstacles, respectively.

Next, FIG. 7 shows an example in which the reflecting mirror 4 shown in FIG. 1 has a variable angle structure. In FIG. 7, reference numeral 4a denotes a reflector provided on the ceiling at the rear of the vehicle as in FIG.
One end is fixed to the output shaft 9 of the gear box 7. Here, the gear box 7 reduces the rotational output of the DC motor 8, and the reflecting mirror 4a is configured to be rotatable in the direction of the arrow P about the output shaft 9 thereof. As a result, the driver M operates the DC motor 8 by operating a switch or the like.
Is turned forward and reverse, the reflecting mirror 4a rotates in the direction of arrow P about the output shaft 9. Therefore, the driver M can easily view the reflected display contents by using the reflecting surface 4b of the reflecting mirror 4a.
Angle can be set. That is, the DC motor 8 and the gear box 7 constitute angle changing means.

FIG. 8 shows a switching circuit including a DC motor 8 and a switch 6 for switching the rotation direction. In FIG. 8, a changeover switch 6 and a DC motor 8 are connected in series between a 12V battery power supply and ground, and the changeover switch 6 can be switched between forward rotation, reverse rotation, and stop. It is arranged at a position where M can be operated.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIG. In FIG. 9, the difference from FIG. 1 corresponding to the first embodiment is that in FIG.
While the display contents of the indicator 3 are reflected on the reflecting mirror 4 provided on the ceiling at the rear of the vehicle 10 for viewing, the display contents of the LED indicator 3 are reflected on the reflecting mirror 4 in FIG. The point is that the vehicle M provided on the right side reflects the light to another reflecting mirror such as the existing rear-view mirror 15 so that the driver M can see it. In FIG. 9, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

At this time, the driver M can easily know the display contents of the LED indicator 3 behind the driver's seat 12 by looking at the rear-view mirror 15 on the right side of the driver's seat 12 without turning around. it can. This is convenient when backing up the vehicle 10 while checking the rear of the vehicle 10 with the rearview mirror 15. Here, the driver M may turn around and look at the display content of the LED indicator 3 reflected by the reflecting mirror 4.

(Embodiment 3) Next, Embodiment 3 of the present invention.
Will be described. In the present embodiment, an ultrasonic sensor is provided at each of the four corners of the vehicle to detect an obstacle. As shown in FIG. 10 in detail, ultrasonic sensors 18a, 18b, 18c, and 18d are provided at the front left, front right, rear left, and rear right of the bumper of the vehicle 17, respectively.
Each of the ultrasonic sensors 18a to 18d transmits an ultrasonic signal based on a control signal from a control unit 19 provided in the vehicle 17, and the control unit transmits the ultrasonic signal based on a reflected signal reflected on an external obstacle. 19 by vehicle 17
A nearby obstacle is detected. And the detection result is
The information is displayed on an LED indicator 21 which is a display unit attached to the upper surface of the instrument panel 20 of the vehicle 17 on the driver's seat side. FIG. 11 shows the above-described ultrasonic sensors 18a to 18a.
d, the overall configuration of the on-board obstacle detection device including the control unit 19 and the LED indicator 21.

The instrument panel 20 of the vehicle 17
When the LED indicator 21 is mounted on the upper surface of the vehicle, the driver may be unable to see the LED indicator 21 due to a difference in height of the driver or a difference in height of the instrument panel 20 for each vehicle. To respond to this, LED
The external structure of the indicator 21 is devised, for example, as shown in the perspective view of FIG.

That is, the LED indicator 21 has a substantially triangular prism shape having a cross section of a substantially right triangle. Here, let x and y denote the sides that intersect at right angles of the right-angled triangle of the cross section and z denote the hypotenuse, respectively.
An obstacle display unit 22 for displaying the presence or absence of an obstacle is provided on a slope C surface having a hypotenuse z of the indicator 21, and the side x
A (bottom in the figure) having side A or B (back side in the figure) having side y is adhered and fixed to the upper surface of instrument panel 20 with double-sided tape or the like. In the illustrated example, the side y is formed to be longer than the side x, and the above-described obstacle is selected by selecting one of the surface A and the surface B to be fixed to the upper surface of the instrument panel 20. The inclination of the slope C of the object display section 22 with respect to the driver is changed, and FIG.
As shown in FIG. 7, the position of the slope C with respect to the driver M1 changes, and the difference in height of the instrument panel 20 is absorbed, so that the driver M1 can easily see the obstacle display unit 22. Here, the slope C surface is a display surface, and the A surface and the B surface are mounting surfaces, respectively.

The obstacle display section 22 includes a vehicle illustration 23 which is a figure showing a vehicle, and a vehicle illustration 23
Are provided at the four corners of the vehicle, and are made up of LEDs and illuminated and displayed, so that the ultrasonic sensors 18a provided at the four corners of the vehicle are provided.
To position indicators 24a to 24d, which are position display means for indicating which one of the obstacles has been detected, and centrally located before and after the vehicle illustration 23.
A front indicator light 25 serving as a front display means which is illuminated to indicate which of the vehicle illustrations 23 is forward.
a and 25b.

As described above, when the surface A is used as the mounting surface and when the surface B is used as the mounting surface, L
The obstacle display section 22 of the ED indicator 21 is upside down. That is, when the surface A is used as a mounting surface to the instrument panel 20, as shown in FIG.
If the side with a is upward with respect to the driver, while the side B is the mounting surface to the instrument panel 20, on the contrary, the side with the front indicator light 25a is facing the driver as shown in FIG. It will be on the lower side.

Normally, when viewed from the driver's seat, it is usually determined that the upper side is the forward direction. To make it easier to see, the upper side of the obstacle display section 22 is in front of the vehicle illustration 23 when viewed from the driver. The direction is set so as to coincide with the direction, and the driver can instantly know which of the upper and lower sides of the obstacle display section 22 is the front direction of the vehicle illustration 23,
The front indicator lights 25a and 25b corresponding to the front direction of the vehicle illustration 23 are selectively turned on.
Here, the shape of the vehicle illustration 23 is the same in the front and rear.

That is, when the surface A is used as the mounting surface, FIG.
When the upper side of the obstacle display section 22 (the side with the forward direction indicator light 25a) is set to the forward direction of the vehicle illustration 23, the forward direction indicator light 25a is turned on, and the surface B is the mounting surface, FIG.
The upper side of the obstacle display section 22 (the side with the forward direction indicator light 25b) is set to the forward direction of the vehicle illustration 23, and the forward direction indicator light 25b is turned on.

FIG. 15 shows the display state of the LED indicator 21 as viewed from the driver when the side A is the mounting surface.
(A) shows the L viewed from the driver when the B side is the mounting surface.
The display state of the ED indicator 21 is shown in FIG. 15, the same components as those in FIGS. 12 and 13 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 15A, a position indicator lamp 24a indicates whether or not an obstacle is detected by the ultrasonic sensor 18a on the front left of the vehicle 17 shown in FIG. 10, and is turned on when an obstacle is detected. Display the detection of obstacles. Similarly, the position sensors 24b to 24d have respective ultrasonic sensors 18b to 1 of the vehicle 17.
8d indicates whether or not an obstacle is detected. Based on the detection result of the obstacle, the corresponding position of the vehicle illustration 23 is illuminated to indicate the position of the obstacle of the vehicle.

On the other hand, in the case shown in FIG. 15B, it is upside down as compared with the case in FIG.
The position indicator 24d is located at the front left of the vehicle illustration 23, the position indicator 24c is located at the front right, the position indicator 24b is located at the rear left, and the position indicator 24a is located at the rear right.
The front indicator light 25b is located at the upper center of the vehicle, and the front indicator light 25a is located at the lower center. As mentioned above here,
In order to make it easier for the driver to see, the upper side of the vehicle illustration 23 is set in the forward direction also in the case of FIG. Therefore, the ultrasonic sensor 18 at the front left of the vehicle 17
FIG. 11 shows that the position indicating lamp 24d is turned on when an obstacle is detected by a, and the position indicating lamp 24c is turned on when an obstacle is detected by the ultrasonic sensor 18b on the right front of the vehicle 17. Each ultrasonic sensor 18a-18
The ultrasonic sensor 18 which detects an obstacle in each case by changing the connection state between the LED indicator 21 and the LED indicator 21
What is necessary is just to make it correspond to position indication lights 24a-24d which display that a-18d and the detection of the obstacle were detected.

Although the shape of the LED indicator 21 has been described as a substantially triangular prism as shown in FIGS. 12 and 13, the shape is not limited to this, and the shape is not limited to this. 16, if the inclination of the obstacle display portion which the driver sees changes and the difference in the height of the instrument panel is absorbed, L shown in FIG.
It may have a substantially pentagonal prism shape like the ED indicator 21a.

Further, the forward direction indicators 25a, 25b
Is turned on to display the front direction of the vehicle illustration 23. However, the word "front" may be turned on and displayed to make it easier to understand which is the front direction.

FIG. 17 shows a circuit configuration of the control unit 19 described above. In FIG. 17, reference numeral 51 denotes a reference signal generation circuit that generates a reference signal that creates timing of a transmission signal of an ultrasonic signal transmitted from each of the ultrasonic sensors 18 a to 18 d, and 52 denotes a reference signal from the reference signal generation circuit 51. This is a control circuit that receives the reference signal and creates the time width of the transmitted signal. An oscillation circuit 53 generates a high-frequency signal for driving each of the ultrasonic sensors 18a to 18d from the output of the control circuit 52, and its output is supplied to each of the ultrasonic sensors 18a to 18d via a driver 54, A sound wave signal is output.

Reference numeral 58a denotes an amplifier circuit for amplifying a weak reflected signal, which is an ultrasonic signal transmitted from the ultrasonic sensor 18a reflected by an obstacle and received from the ultrasonic sensor 18a and converted into an electric signal by air vibration. The high frequency component of the amplified signal is removed by the detection circuit 57a. 5
Reference numeral 9 denotes a gate which determines whether or not a reflected signal is received within a predetermined time after transmission of the ultrasonic signal based on the reference signal from the reference signal generation circuit 51.
Receives the output of the detection circuit 57a and the gate 59, determines whether the input waveform of the reflected signal received within a predetermined time from the transmission of the ultrasonic signal exceeds a certain threshold, If so, a signal indicating that there is an obstacle around the vehicle is output to the detection determination circuit 65.

The same applies to the other ultrasonic sensors 18b to 18d. A reflected wave of the transmitted ultrasonic signal at the obstacle is received, and the amplified signals are amplified by the amplifier circuits 58b to 58d and the detection circuit 57.
b to 57d, via the level detection circuits 56b to 56d,
It is determined whether or not the input waveform of the reflected signal received within a predetermined time from the transmission of the ultrasonic signal exceeds a certain threshold, and if it does, it indicates that there is an obstacle around the vehicle. The signal is output to the detection determination circuit 65.

The detection judging circuit 65 includes the level detecting circuits 5
6a-56d, the ultrasonic sensor 18a
-18d, and the corresponding position indicating lamp 24 is turned on via the LED drive circuit 66. Here, the position indicating lights 24 correspond to the above-described position indicating lights 24a to 24d.

The above-mentioned LED indicator 21 has a well-known mercury switch 68a which is turned on when the surface A is mounted as a mounting surface, and which is turned on when the surface B is mounted as a mounting surface. A known mercury switch 68b is provided between the voltage source (not shown) and the ground so that the forward indicator 25a is turned on when the mercury switch 68a is turned on.
8a and the forward indicator 25a are connected in series, and when the mercury switch 68b is turned on, the forward indicator 25
A mercury switch 68b and a forward direction indicator light 25b are connected in series between a voltage source (not shown) and the ground so that b lights up.

FIG. 18 shows signal waveforms at various parts relating to the ultrasonic sensor 18a at the front left of the vehicle 17. FIG. 18A shows a transmission signal output from the driver 54, FIG. 18B shows an output signal from the amplifier circuit 58a,
FIG. 18C shows an output signal from the detection circuit 57a. FIG. 18D shows a gate time for determining the presence or absence of a reflected signal due to an obstacle. FIG. 18E shows a comparison between the signal waveform of the reflected signal received within the gate time and a predetermined level S2. It shows the state that it is doing. FIG.
In each waveform diagram of FIG. 8, the horizontal axis represents time and the vertical axis represents signal level. In FIGS.
Reference numeral 2 denotes a reflected signal due to an obstacle.

As described above, in the present embodiment, the front indicator lights 25a, 25a,
Since the lamp 25b is turned on, the driver can quickly and accurately know where the obstacle is located in the forward direction of the vehicle. In addition, since the upper side of the obstacle display section 22 of the LED indicator 21 is set so as to match the front direction of the vehicle illustration 23 when viewed from the driver, which position is the obstacle with respect to the front direction of the vehicle? Becomes easier to understand.

[0038]

As described above, according to the first aspect of the present invention, a detection section mounted on a vehicle and detecting an obstacle of the vehicle, and a detection result provided by the detection section provided behind a driver's seat and detected by the driver are provided. In the in-vehicle obstacle detection device provided with a display unit that informs the driver, a reflecting mirror that reflects the display content of the display unit in a direction visible to the driver is provided, so that the display content of the display unit is hidden from the driver. It is possible to prevent the situation of disappearing.

According to a second aspect of the present invention, in the first aspect of the present invention, the reflecting mirror sequentially reflects the display content of the display unit to each of the reflecting mirrors and guides the display content in a direction that can be visually recognized by a driver. Are provided, the driver can more easily see the display contents of the display unit, and it is possible to further prevent the display contents of the display unit from being hidden by the driver and becoming invisible.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, since the angle changing means for changing the angle of the reflecting mirror is provided, the display on the display section reflected by the reflecting mirror is provided. It can be set to make the contents easier to see.

According to a fourth aspect of the present invention, there are provided a plurality of detectors mounted on a vehicle for detecting obstacles of the vehicle, and a display unit mounted on the vehicle and informing a driver of a detection result detected by the detector. In the in-vehicle obstacle detection device provided, the display unit has a display surface and two mounting surfaces, and in each case where the vehicle is mounted on each mounting surface, a graphic indicating a vehicle provided on the display surface is provided. The position of the display surface with respect to the driver is changed while the front-rear direction is switched, and is provided around a figure showing the vehicle, and a position display means showing the position of the detection unit, and a figure showing the vehicle And front display means provided in the front and rear,
When an obstacle is detected by the detection unit, the position display unit displays a position corresponding to the detected detection unit, and the front display unit determines which of the graphics indicating the vehicle is ahead. In order to display alternatively, the position of the detection unit where the obstacle is detected is displayed around the figure showing the vehicle by the position display means, and further, the front display means shows where the front of the figure showing the vehicle is located. To know if there is
The driver can quickly and accurately know where the obstacle is located ahead of the vehicle.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a reflection state of a display unit of an on-board obstacle detection device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the vehicle-mounted obstacle detection device is mounted on a vehicle.

FIG. 3 is another perspective view showing a state where the vehicle-mounted obstacle detection device is mounted on a vehicle.

FIG. 4 is a perspective view showing the configuration of the above-described on-board obstacle detection device.

FIG. 5 is a circuit diagram showing a configuration of the above-described on-board obstacle detection device;

FIG. 6 is a waveform diagram showing signal waveforms of respective parts of the above-described on-board obstacle detection device.

FIG. 7 is a structural diagram showing a structure when the reflecting mirror of the vehicle-mounted obstacle detection device is rotatable.

FIG. 8 is a circuit diagram showing a rotating mechanism of a reflecting mirror of the vehicle-mounted obstacle detecting device.

FIG. 9 is a perspective view showing a reflection state of a display unit of the on-board obstacle detection device according to the second embodiment of the present invention.

FIG. 10 is a perspective view showing a state where an in-vehicle obstacle detection device according to a third embodiment of the present invention is mounted on a vehicle.

FIG. 11 is a perspective view showing the configuration of the above-described in-vehicle obstacle detection device.

FIG. 12 is a perspective view showing a configuration of a display unit of the vehicle-mounted obstacle detection device.

FIG. 13 is another perspective view showing the configuration of the display unit of the vehicle-mounted obstacle detection device of the above.

FIG. 14 is an explanatory diagram illustrating a relationship between the display unit of the vehicle-mounted obstacle detection device and a driver's line of sight when the display unit is mounted on an instrument panel of the vehicle.

FIG. 15 is a diagram illustrating a display state of a display unit of the above-described in-vehicle obstacle detection device, in which (a) and (b) are explanatory diagrams.

FIG. 16 is a perspective view showing another configuration of the display unit of the above-described in-vehicle obstacle detection device.

FIG. 17 is a circuit diagram showing a configuration of the above-described in-vehicle obstacle detection device.

FIG. 18 is a waveform chart showing a signal waveform of each part of the above-described on-board obstacle detection device.

[Explanation of symbols]

 3 LED Indicator 4 Reflector 10 Vehicle 11 Package Tray 12 Driver's Seat M Driver

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G01S 15/93

Claims (4)

[Claims] 1. An in-vehicle obstacle detection system comprising: a detection unit mounted on a vehicle and detecting an obstacle of the vehicle; and a display unit provided behind a driver's seat and informing a driver of a detection result detected by the detection unit. In the apparatus, a reflector for reflecting the display content of the display unit in a direction visible to a driver is provided. 2. The on-vehicle vehicle according to claim 1, wherein a plurality of the reflecting mirrors are provided so as to sequentially reflect the display content of the display unit to each of the reflecting mirrors and guide the display contents to a direction in which the driver can view them. Obstacle detection device. 3. The on-vehicle obstacle detecting device according to claim 1, further comprising an angle changing unit that changes an angle of the reflecting mirror. 4. An in-vehicle obstacle detection device including a plurality of detection units mounted on a vehicle and detecting an obstacle of the vehicle, and a display unit attached to the vehicle and informing a driver of a detection result detected by the detection unit. In the above, the display unit has a display surface and two mounting surfaces, and in each case of mounting to a vehicle on each mounting surface, the front and rear directions of the figure indicating the vehicle provided on the display surface are switched and the driver A position display means provided around a figure indicating the vehicle and indicating the position of the detection unit; and a front display provided before and after the figure indicating the vehicle. And a position display unit, when an obstacle is detected by the detection unit, displays a position corresponding to the detected detection unit, and the front display unit displays a figure indicating the vehicle. Vehicle obstacle detecting device that either is characterized by selectively displaying whether the front.