JP2001246996A - Display device for obstacle detection device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for an obstacle detection device for vehicle allowing a driver to visually confirm the display device by less travel of line of sight and facilitating the confirmation of obstacles. SOLUTION: This display device for the obstacle detection device for vehicle is provided with a first display part 20 arranged on a room mirror 17 in a vehicle to display distance information related to the obstacle existing on a rear side of the vehicle, a second display part 22 arranged on an inner side of the vehicle of a left front pillar 18 of the vehicle to display distance information related to the obstacle existing on a front and left side of the vehicle, and a third display part 23 arranged on an inner side of the vehicle of a right front pillar 19 of the vehicle to display distance information related to the obstacle existing on a front and right side of the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for an obstacle detecting device for a vehicle, and more particularly to a display device for an obstacle detecting device for a vehicle which can detect distance information on obstacles around the vehicle detected by the obstacle detecting device. Related to the technology for visual recognition.

[0002]

2. Description of the Related Art As shown in FIG. 6, a display device 1 of a conventional vehicle obstacle detecting device is disposed on a center panel portion 3 located at the center of a dashboard 2. As shown in FIG. The clearances are detected by clearance sensors 6, 7, 8, 9 disposed on the left and right portions of the front and rear bumpers 4, 5 and the back sensor 10 disposed at the center of the rear bumper 5. The distance information on the obstacle that has been displayed is displayed on the display device 1 in a concentrated manner.

[0003]

However, since the display device 1 is disposed on the center panel portion 3, for example, in the case of back driving, the driver is required to operate the rearview mirror 12 disposed at the center of the front end of the roof. And observing the display device 1 disposed on the center panel portion 3 while confirming an obstacle, and observing an obstacle.
Since it is repeatedly moved at a relatively long distance between the camera and the room mirror 12, there is a disadvantage that the line of sight movement is very troublesome.

[0004] Similarly, when driving forward, for example, when making a right turn (the same is true when making a right turn), the driver looks at the front right side and looks at the display device 1 arranged on the center panel portion 3 to avoid obstacles. Is checked, and the line of sight is repeatedly moved at a relatively long distance between the front right side and the display device 1. Therefore, there is a disadvantage that the line of sight is very cumbersome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device of an obstacle detecting device for a vehicle, which enables a driver to visually recognize the display device with a small amount of line of sight movement and to easily check an obstacle. .

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention resides on the front, left, right or rear side of the vehicle by obstacle detection sensors disposed at the front and rear of the vehicle. A display device of an obstacle detecting device for a vehicle for informing in a vehicle of distance information on an obstacle obtained by detecting an obstacle, the display device being disposed on a rearview mirror of the vehicle and existing behind the vehicle. A first display unit that displays the distance information on the obstacle, and a second display unit that is disposed inside the left front pillar of the vehicle and displays the distance information on an obstacle existing on the front left side of the vehicle. And a third display unit, which is disposed inside the right front pillar of the vehicle and displays the distance information on an obstacle existing on the front right side of the vehicle.

At this time, the rear-view mirror has a box-shaped rear-view mirror body with an open front surface, and the rear-view mirror is arranged on the front surface to reflect light incident from the outside. A magic mirror that transmits to the outside, the first display unit is housed in the room mirror main body, and only when the vehicle retreats, the first display unit displays the distance information regarding an obstacle present on the rear side of the vehicle. It is preferable that the display device further includes: a light emitting display unit that emits light and displays the light through the magic mirror to be projected outside;

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic diagram of a vehicle obstacle detection device to which the display device of the vehicle obstacle detection device according to the first embodiment of the present invention is applied.
Is a circuit configuration diagram of the vehicle obstacle detection device,
FIG. 3 is a diagram for explaining the location of the display device.
FIG. 4 is a cross-sectional view of a room mirror according to the display device, and FIG. 5 is a diagram illustrating a state where detection information is displayed on the room mirror.

As shown in FIGS. 1 and 2, the vehicle obstacle detecting device 1A includes clearance sensors FR, F disposed on front and rear bumpers 15, 16, respectively.
L, RR, RL and back sensors BR, BL (obstacle detection sensors), a first indicator (first display unit) 20 disposed on the room mirror 17 of the vehicle 14, and the vehicle 1
Second and third indicators 22, 23 disposed inside the vehicle on the left and right front pillars 18, 19, respectively.
(Second and third display units) and each clearance sensor F
A control unit 24 for displaying and driving the first, second, and third indicators 20, 22, and 23 based on distance information on obstacles obtained from R, FL, RR, RL and the back sensors BR and BL; A main switch 25 (see FIG. 2) for turning on / off the system of the object detection device 1 </ b>A;
The main configuration is provided with a back sonar buzzer 26 (see FIG. 2) for notifying when the vehicle 14 is in the back mode.

Here, in FIG. 2, 50 is a battery, 55
Is a speed sensor, 81 is a tail lamp relay, 82 is a tail lamp, 83 is a light control switch, 8
4 is a neutral start switch, 87 is a torque converter indicator, 88 is a backup lamp switch, 89
Denotes backup lamps, which are usually mounted on a vehicle.

[0011] Clearance sensors FR, FL, RR, R
The L and the back sensors BR and BL each include a transceiver (not shown) for transmitting radio waves for obstacle detection,
The main configuration is provided with a receiver (not shown) for receiving a radio wave reflected and returned by an obstacle, and a GND (ground) circuit (not shown). Each transceiver has a control unit 2
4, each receiver receives a radio wave transmitted from the transceiver, reflected from an obstacle and returned, and processes the received radio wave to the control unit 24. Supply.

The clearance sensors FR, FL, R
As shown in FIG. 1, R and RL are disposed at both ends of the respective bumpers 15 and 16 in front and behind the vehicle 14.
The clearance sensor FR detects the presence or absence of an obstacle at the front right of the vehicle 14 and distance information to the obstacle, and the clearance sensor FL detects the presence of an obstacle at the front left of the vehicle 14 and distance information to the obstacle. The clearance sensor RR detects the presence or absence of an obstacle at the rear right side of the vehicle 14 and distance information to the obstacle, and the clearance sensor RL detects the presence of an obstacle at the rear left side of the vehicle 14 and distance information to the obstacle. And the signals obtained by detecting them (distance information on obstacles)
Is supplied to the control unit 24 as described above.

The back sensors BR and BL are connected to the vehicle 1
4 is disposed in the vicinity of the center of the rear pump 16 and detects the presence or absence of an obstacle behind the vehicle 14 and information on the distance to the obstacle, and a signal obtained by the detection (distance information on the obstacle). Is supplied to the control unit 24 as described above.

As shown in FIG.
A box-shaped room mirror body 30 disposed at the center of the front end of a roof 29 via a cylindrical support portion 28 and having an open front surface
And the rear-view mirror body 3
The light 31 incident on the mirror 3 is reflected while the light 32 from the interior of the room mirror body 30 is transmitted to the outside.
3 is provided.

A hole 35 is formed in the room mirror body 30 at a position where the support portion 28 is provided, and a hole 36 is similarly formed in the roof 29 at a position where the support portion 28 is provided. From the inside of the roof 29, the hole 36 of the roof 29
Through the hollow interior 28a of the support portion 28 through the hole 35 of the room mirror body 30
A wiring path 37 reaching the inside is formed.

The rearview mirror 17 is normally mounted on the vehicle 1
Reflects the scenery behind 4 and makes it visible to the driver,
When the vehicle 14 moves backward, a first indicator 20 built in the rear-view mirror 17 is used to drive the vehicle 1 as described later.
The distance information relating to an obstacle existing on the rear side of 4 is displayed on the magic mirror 33 to notify the driver.

As shown in FIG. 4, the first indicator 20 is connected to the rearview mirror 17 (the rearview mirror body 3).
0), the display surface 37 of which is disposed with the display surface 37 facing the magic mirror 33, and the presence and absence of obstacles on the rear side (rear and rear left and right sides) of the vehicle 14 in accordance with a command from the control unit 24. A display 38 (display means) for displaying information on the distance to the object through the magic mirror 33
And a buzzer circuit 39 (buzzer means, which blows sound in accordance with a light emission operation of the display 38 in accordance with a command from the control unit 24).
2) and a PCB 43 (printed circuit board) on which a display 38 and a buzzer circuit 39 are mounted and which is fixed to the rear surface inside the room mirror main body 30 by screws 42, for example.

The display 38 is, for example, as shown in FIG.
An upward vehicle-type display segment 44 regarded as the vehicle 14 is formed in, for example, a central portion of the display surface 37, and a lower side of the vehicle-type display segment 44 warns of the presence of an obstacle behind the vehicle 14. The display segment 47 for warning the presence of obstacles on the left and right sides behind the vehicle 14 is provided at both lower corners of the display segment 44 of the vehicle type.
2, light-emitting elements 44a, 45a for causing the display segments 44, 45, 46, 47 to emit light are displayed on the display segments 44, 45, 56, 47, respectively, as shown in FIG. , 46a, 47a
The main configuration is provided.

Each light emitting element 44a, 45a, 46a, 47
For a, for example, a fluorescent display tube is used. And
Each of the light emitting elements 44a, 45a, 46a, 47a has one end connected to the battery 50 and the other end connected to each of the output circuits 67, 68, and 68 in the control unit 24 via resistors 44b, 45b, 46b, and 47b, respectively. 69, 70
When the output circuits 67, 68, 69, and 70 are turned on by the CPU 58, a current is supplied from the battery 50 to emit light, as will be described later.

As described later, the display segment 4
5 (see FIG. 5) is driven to be lit based on information on the presence or absence of an obstacle at the rear left side of the vehicle 14 and the distance to the obstacle obtained by detection by the clearance sensor RL. Segment 4
The light emitting element 46 a provided in the display segment 47 is driven to light based on information on the presence or absence of an obstacle on the right rear side of the vehicle 14 and the distance to the obstacle obtained by detection by the clearance sensor RR. The light emitting elements 47a are respectively back sensors BR, BL
Is driven based on information on the presence or absence of an obstacle behind the vehicle 14 and the distance to the obstacle, which is obtained by the detection of the light emitting elements 45a, 46a,
47a is driven so that the blinking interval becomes shorter as the distance to the obstacle becomes shorter.

Similarly, the buzzer circuit 39 has one end connected to the battery 50 and the other end connected to each output circuit 71 in the control section 24, and the output circuit 71 is turned on by the CPU 58. An electric current is supplied from the battery 50 to perform a blow driving. At that time, as described later, the buzzer circuit 39 drives the buzzer in accordance with the blinking interval of each of the light emitting elements 45a, 46a, 47a.

As shown in FIG. 4, one end of a sub-harness 51 is connected to the PCB 43 via a connector 52. The other end of the sub-harness 51 is drawn into the roof 29 through the above-described wiring path 37,
It is connected to the control unit 24 via a wire harness 53 arranged inside the roof 29. The display 38 and the buzzer circuit 39 are connected to the sub-harness 5 connected to the PCB 43.
1 and the control unit 24 via the wire harness 53.

Second and third indicators 22, 23
Are light-emitting elements 22a and 23, respectively, as shown in FIG.
a (for example, light emitting diodes 22a and 23a). Each of the light emitting diodes 22a and 23a has its anode connected to the battery 50 and its cathode connected to each output circuit 72 and 73 in the control unit 24 via the resistors 22b and 23b, respectively.
As described later, each output circuit 72,
When 73 is turned on, current is supplied from the battery 50 and light emission is driven.

The light emitting element 22a provided on the second indicator 22 is turned on based on information on the presence or absence of an obstacle on the left front side of the vehicle 14 and the distance to the obstacle obtained by detection by the clearance sensor FL. The driven light emitting element 23a provided in the third indicator 23 is driven to be lit based on information on the presence or absence of an obstacle and the distance to the obstacle on the right front side of the vehicle 14 obtained by detection by the clearance sensor FR. You. At this time, as described later, each of the light emitting elements 22 and 23 is driven to light so that the blinking interval becomes shorter as the distance to the obstacle becomes shorter.

As shown in FIG. 2, the main switch 25 includes an on / off switch 56 and a light emitting element 25a (for example, a light emitting diode 25a). The light emitting diode 25a has an anode connected to the battery 50 and a cathode connected to the output circuit 74b of the control unit 24 via the resistor 25b. And on /
The off switch 56 has one end connected to the battery 50 and the other end 56 a connected to the input circuit 74 of the control unit 24.
a.

In the main switch 25, an indicator is constituted by the light emitting diode 25a and the resistor 25b. The on / off switch 56 is turned on, and the current from the battery 50 is supplied to the control unit 24 (input) through the on / off switch 56. The output from the battery 50 is supplied to the light emitting element 25a by turning on the output circuit 74b by the control unit 24 by inputting the signal to the circuit 74a). The light emission of the indicator (light emitting element 25a) notifies the driver that the system of the obstacle detection device 1A is on.

The back sonar buzzer 26 has one end connected to the other end 56a of the on / off switch 56 of the main switch 25 and the other end connected to the output circuit 75 of the control unit 24, as shown in FIG. As described later, when the main switch 25 (that is, the on / off switch 56) is turned on and the vehicle 14 enters the back mode, the control unit 24 detects that the mode has been entered by a function described later. The output circuit 75 is turned on,
As a result, the current from the battery 50 is supplied to the back sonar buzzer 26 through the on / off switch 56 to drive the sound. The buzzer sound at that time notifies the driver that the vehicle 14 is in the back mode.

The control section 24 is disposed, for example, on the rear side of the dashboard 57 as shown in FIG.
8 mainly.

As shown in FIG. 2, the CPU 58 operates the obstacle detection device 1A system (a function to be described later) by receiving an ON signal from the main switch 25 through the input circuit 74a, and receives an OFF signal. By doing so, the system is terminated.

The CPU 58 inputs speed information of the vehicle 14 from the speed sensor 55 mounted on the vehicle 14 through the input circuit 76. Only when the vehicle 14 is running at a certain speed or less, as will be described later. , Clearance sensors FR, FL, RR, RL and back sensors BR, B
L is made to perform obstacle detection.

The CPU 58 also receives a part of the current flowing from one end of the backup lamp switch 88 to the backup lamp 89 through the input circuit 79 and the torque converter indicator 8 from the R side of the neutral start switch 84.
7, a part of the current flowing through the lamp R is input. Based on the presence or absence of the input current RL, the vehicle 14 is recognized to be in the back mode, and the back sonar buzzer 26 is driven to blow through the output circuit 75. It has become.

That is, when the backup lamp switch 88 is turned on and the current from the battery 50 is supplied to the backup lamp 89 through the backup light switch 88 and the backup lamp 89 is driven to light, the CPU 58 executes the neutral start switch 8.
4 is switched to the R side, and when the current from the battery 50 is supplied to the lamp R of the torque converter indicator 87 through the R side of the neutral start switch 84 and the lamp R is driven to turn on, it is supplied to the backup lamp 89 or the lamp R. When a part of the generated current is input to the input circuit 79, it recognizes that the vehicle 14 is in the back mode,
The back sonar buzzer 26 is driven to blow only during the back mode.

Further, the CPU 58 controls each output circuit 61b,
Transmission commands T1, T2, T3, T to clearance sensors FR, FL, RR, RL and back sensors BR, BL through 62b, 63b, 64b, 65b, 66b, respectively.
4, T5 and T6 to drive the transceiver to transmit, and when the receiver receives a radio wave transmitted from the transceiver and reflected back by an obstacle, the receiver output signals R1, R2 and R2 output from the receiver. R3, R4, R
5, R6 are input circuits 61a, 62a, 63a, respectively.
The signals are inputted through 64a, 65a, and 66a, and the input signals are analyzed to detect the presence or absence of an obstacle and, if there is an obstacle, to detect the distance to the obstacle.

At this time, when the vehicle 14 is traveling forward at a certain speed or less, the CPU 58 always gives the transmission commands T2 and T3 to the clearance sensors FR and FL to constantly detect obstacles. When the receiver output signal R4 is received from the clearance sensor FL, the output circuit 73 outputs the second output signal R4 to the second front pillar 18 disposed on the left front pillar 18.
The light emitting element 22a provided in the indicator 22 is driven to emit light by changing the blinking interval in accordance with the distance to the obstacle (for example, the blinking interval is shortened as the distance to the obstacle is shortened. The same applies hereinafter). Similarly, when the receiver output signal R2 is received from the clearance sensor FR, the light emitting element 23a provided in the third indicator 23 disposed on the right front pillar 19 through the output circuit 72.
Is driven to emit light by changing the blinking interval according to the distance to the obstacle.

When the vehicle 14 runs at a certain speed or less and is in the back mode, the CPU 58 drives the light emitting element 44a provided in the first indicator 20 housed in the room mirror 17 to turn on and off. The vehicle-type segment 44 is always displayed on the magic mirror 33 while the clearance sensors RR and RL and the back sensor B
The vehicle 14 runs at a certain speed or less with respect to R and BL,
Only when the vehicle is in the back mode, the transmission commands T2 and T3 are given to detect an obstacle, and the clearance sensor RL
When the receiver output signal R4 is received from the
The light emitting element 45a provided in the first indicator 20 is driven to emit light by changing the blinking interval according to the distance to the obstacle, and the display segment 45 is displayed on the magic mirror 33 and the light emitting element 45a is set to the blinking interval. By driving the buzzer circuit 39 in synchronization with the buzzer circuit 39, it is notified that an obstacle is present on the rear left side (see FIG. 5).
When the receiver output signal R1 is received from the clearance sensor RR, the output circuit 69 causes the light emitting element 46a provided in the first indicator 20 to emit light by changing the blinking interval in accordance with the distance to the obstacle to emit light. The display segment 46 is displayed on the mirror 33, and the buzzer circuit 39 is driven to sound in synchronism with the blinking interval, thereby notifying that an obstacle exists on the rear right side, and the receiver output signal R from the back sensor BR or BL.
5 or R6, the first through the output circuit 70
The light emitting element 47a provided in the indicator 20 is driven to emit light while changing the blinking interval in accordance with the distance to the obstacle, so that the display segment 47 is displayed on the magic mirror 33 and the buzzer is synchronized with the blinking interval. Circuit 3
9 is sounded to notify that an obstacle exists behind.

As shown in FIG. 2, the CPU 58
A part of the current flowing to the tail lamp 82 is input from one end of the normally open switch 81a of the tail lamp relay 81 through the input circuit 77, and each of the light emitting elements 22a, 23a, 25a, 44a, 45a, 4 is determined based on the presence or absence of the input current TL.
The light emission luminance of 5a and 47a is adjusted.

That is, when the light control switch 83 is turned on, the CPU 58 activates the normally open switch 8 by the exciting action of the exciting coil 81b of the tail lamp relay 81.
1a is turned on, the current from the battery 50 is supplied to the tail lamp 82 through the normally open switch 81a, and the tail lamp 82 is turned on.
Is input to the input circuit 77, it recognizes that the tail lamp 82 has been driven to light (that is, recognizes that it is nighttime), and the light-emitting elements 22
a, 23a, 25a, 44a, 45a, 45a, 47a
Is changed (for example, increased) by changing the DuTy ratio of the output waveform, for example. When the light control switch 83 is off, no current is input to the input circuit 77. In this case, it is determined that the day is during the day, and the emission luminance is not changed.

Further, the CPU 58 inputs a part of the current flowing from the P side (parking) of the neutral start switch 84 to the ramp P of the torque converter indicator 87 through the input circuit 78, and based on the presence or absence of the input current PL. Each light emitting element 22a, 23a, 44a, 45a,
45a, 47a and the buzzer circuit 39, the vehicle 14
Notification drive (light emission drive and sound drive) while the vehicle is stopped
To stop.

That is, when the neutral start switch 84 is switched to the P side, the CPU 58
The current from 0 is the P of the neutral start switch 84.
When a part of the current supplied to the lamp P is input to the input circuit 78 when the lamp P is supplied to the lamp P of the torque converter indicator 87 through the side and the lamp P is turned on, the vehicle 1
4 recognizes that the vehicle is stopped, and while the vehicle is stopped, the light emitting elements 22a, 23a, 44a, 45a, 45a, 45a, 4
The notification drive to 7a and the buzzer circuit 39 is stopped.

According to the display device of the vehicle obstacle detecting device 1A configured as described above, the first indicator 20 provided on the room mirror 17 and the left front pillar 1
8 and a third indicator 23 disposed on the right front pillar 19, and is obtained by being detected by the clearance sensors RL, RR and the back sensors BR, BL. Vehicle 14
Is displayed on the first indicator 20 with respect to obstacles existing on the rear side (rear and rear left and right sides) of the vehicle 14, and the vehicle 14 obtained by detection by the clearance sensor FL is obtained.
Is displayed on the second indicator 22, and distance information on an obstacle existing on the front right side of the vehicle 14 obtained by detection by the clearance sensor FR is displayed on the third indicator 23. For example, in the case of back driving, the driver needs to view the rearview mirror 17 to check the rear.
When you visually recognize the room mirror 1
Since the distance information on the obstacle existing on the rear side of the vehicle 14 displayed by the first indicator 20 disposed on the vehicle 7 enters, it is easy to confirm the distance information on the obstacle on the rear side of the vehicle 14. Also, when driving forward, for example, when making a left turn, when the driver visually recognizes the front left side through the front window, the driver naturally arranges the left front pillar 18 in the field of view. Since the distance information on the obstacle existing on the front left side displayed by the indicator 22 enters, it is easy to confirm the distance information on the obstacle existing on the front left side of the vehicle 14. Similarly, when turning right, the vehicle 14 This makes it easier to check the distance information on the obstacle existing on the right front side of the vehicle, thereby supporting the driver's driving operation and improving safety.

Further, the first, second and third indicators 20, 22, and 23 respectively change the length of the blinking interval according to the distance to the obstacle to display distance information on the obstacle. , Its indicators 20, 22, 23
It is possible to judge whether or not an obstacle is approaching without staring at, and this can also assist the driver's driving operation and improve safety.

Further, according to this display device, when an obstacle is present on the rear side of the vehicle 14, not only visual information by the first indicator 20 but also a buzzer by the buzzer circuit 39 is warned. Therefore, the driver can be more reliably notified of the presence of the obstacle.

Further, the first indicator 20 is housed in the rear-view mirror main body 30 and a magic mirror 33 is disposed in front of the rear-view mirror main body 30 so that the first indicator 20 controls the rear-view mirror only when the vehicle 14 moves backward. Since the distance information on the obstacle is displayed through the magic mirror 33, the distance information on the obstacle is largely displayed using the entire surface of the magic mirror 33 without adversely affecting the rearward confirmation by the room mirror 17 during forward driving. And the visibility of the distance information can be improved.

Further, the display surface 37 of the display 38 of the first indicator 20 has a vehicle-type display segment 44 which is regarded as the vehicle 14 and a vehicle-type display segment 4.
A display segment 45 formed on the rear left side of the vehicle 4 to display distance information regarding an obstacle present on the rear left side of the vehicle 14; and a display segment 45 formed on the rear right side of the vehicle type display segment 44 on the rear right side of the vehicle 14. A display segment 46 for displaying distance information on an existing obstacle; and a vehicle 14 formed behind the vehicle-type display segment 44.
And a display segment 47 for displaying distance information relating to an obstacle present behind the vehicle, so that the state in which the display pattern displayed on the display surface 37 is projected on the magic mirror 33 is as if the user's own. As the vehicle 14 and the obstacle are viewed from above, the positional relationship between the vehicle 14 and the obstacle can be understood at a glance and can be easily checked, which can also assist the driver's driving operation. And safety is improved.

[0045]

According to the first aspect of the present invention, a first display unit is provided on a rearview mirror of a vehicle and displays distance information on an obstacle present on the rear side of the vehicle. A second device is disposed inside the left front pillar and displays distance information on an obstacle existing on the left side in front of the vehicle.
And a third display unit disposed on the inside of the right front pillar of the vehicle and displaying distance information on an obstacle existing on the front right side of the vehicle. In this case, when the driver looks at the rear-view mirror to check the rear, an obstacle existing on the rear side displayed in the field of view by the first display unit naturally disposed on the rear-view mirror. Since the distance information relating to the obstacle enters, it becomes easy to confirm the distance information regarding the obstacle on the rear side.Also, when driving forward, for example, when making a left turn, when the driver visually recognizes the front left side through the front window, Since the distance information about the obstacle existing on the front left side, which is naturally displayed by the second display unit arranged on the left front pillar in the field of view, enters the obstacle existing on the front left side. In the same manner, when making a right turn, it becomes easy to confirm the distance information on the obstacle existing on the front right side by the third display unit provided on the right front pillar, and thereby, The driver's driving operation can be assisted and safety is improved.

According to the second aspect of the present invention, the first display section is housed in the rear-view mirror main body, and the magic mirror is disposed on the front surface of the rear-view mirror main body. Because it displays distance information about obstacles on the rear side through the mirror, it does not affect the rearview by the room mirror during forward driving,
By using the entire surface of the magic mirror, the distance information on the obstacle can be displayed in a large size, and the visibility of the distance information can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a vehicle obstacle detection device to which a display device of a vehicle obstacle detection device according to a first embodiment of the present invention is applied.

FIG. 2 is a circuit configuration diagram of the vehicle obstacle detection device according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating an arrangement location of a display device of the vehicle obstacle detection device according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of the room mirror according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a state in which detection information is displayed on the room mirror according to the first embodiment of the present invention.

FIG. 6 is a schematic diagram of a vehicle obstacle detection device to which a display device of a conventional vehicle obstacle detection device is applied.

[Explanation of symbols]

 1A Vehicle Obstacle Detector 14 Vehicle 15, 16 Bumper 17 Room Mirror 18 Left Front Pillar 19 Right Front Pillar 20 First Display 22 Second Display 23 Third Display 29 Roof 30 Room Mirror Body 38 Display 39 Buzzer circuit BP, BL Back sensor FL, FR, RL, RR Clearance sensor

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Claims (2)

[Claims] An in-vehicle distance information relating to an obstacle obtained by detecting an obstacle existing on the front left, right side or rear side of the vehicle by an obstacle detection sensor disposed at a front part and a rear part of the vehicle. A display device of an obstacle detection device for a vehicle, wherein the first display unit is disposed on a rearview mirror of the vehicle and displays the distance information on an obstacle present on the rear side of the vehicle; A second display unit disposed inside the left front pillar of the vehicle to display the distance information on an obstacle existing on the front left side of the vehicle; and a second display unit disposed inside the right front pillar of the vehicle. And a third display unit for displaying the distance information on the obstacle existing on the front right side of the vehicle. 2. The room mirror has a box-shaped room mirror main body having an open front surface, and is disposed on the front surface and reflects light incident from outside, while light from inside the room mirror body is external. A first mirror, which is housed in the rear-view mirror main body and emits the distance information regarding an obstacle present on the rear side of the vehicle only when the vehicle retreats. A light-emitting display means for displaying and transmitting the light through the magic mirror and projecting the light to the outside; and a buzzer means housed in the room mirror main body and driven to sound according to the light-emitting operation of the light-emitting display means. A display device for the vehicle obstacle detection device according to claim 1.