JP2011227617A - Driving support system and on-vehicle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving support system and an on-vehicle device which has simple structure and can notify existence of a dangerous point under poor visibility.SOLUTION: A driving support system 50 comprises: a road side device 40 which includes wireless communication means transmitting a replying side wireless signal R as a reply to a sending side wireless signal S when the sending side wireless signal S which indicates approach of a vehicle 1 is received; vehicle side wireless communication means provided on the vehicle 1 and transmitting/receiving the wireless signal with the wireless communication means; detection means detecting operation of the on-vehicle device which is operated for the poor visibility in the vehicle 1. When the operation of on-vehicle device is detected by the detection means, the vehicle side wireless communication means transmits the sending side wireless signal S, and the road side device 40 which received the sending side wireless signal S replies the replying side wireless signal R. The driving support system 50 also comprises notification means notifying the dangerous point ahead when the reply is received by the vehicle side wireless communication means.

Description

  The present invention relates to a driving support system and an in-vehicle device.

In general, a curve mirror is installed in a curve section where visibility is poor. Conventionally, a driving support system provided with a device that informs a vehicle that is about to pass a curve section of the curve mirror is known. (For example, refer to Patent Document 1).
Patent Document 1 discloses a configuration in which a wide-angle camera that captures a curve section is provided on a curved mirror, and an image of the wide-angle camera is transmitted to the vehicle so that road conditions are displayed on the vehicle navigation device.

JP 2007-156568 A

However, when shooting a road situation with a camera as in the conventional configuration described above, if the visibility is poor due to weather such as fog or at night, the captured image around the curve mirror may also have poor visibility. In some cases, even if this photographed image is transmitted to the vehicle, it is not known that a curve section that is a dangerous place exists ahead. In addition, since the camera is used, the system configuration is complicated.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a driving support system and an in-vehicle device capable of notifying the existence of a dangerous place even when visibility is poor with a simple configuration.

In order to achieve the above object, the present invention provides a roadside device including a wireless communication unit that transmits a wireless signal that is a reply to a wireless signal when a wireless signal indicating that the vehicle has approached is received; A vehicle-side wireless communication unit that is provided in the vehicle and transmits / receives a radio signal to / from the wireless communication unit; and a detection unit that detects an operation of the on-vehicle equipment that operates in response to a poor visibility of the vehicle, The vehicle-side radio communication means transmits a radio signal indicating that the vehicle has approached when the operation of the on-vehicle equipment is detected by the detection means, and the road-side device that has received the radio signal has a danger ahead. A driving support system comprising a notification means for returning a radio signal indicating that there is a place and notifying that there is a dangerous place ahead when the vehicle-side wireless communication means receives the reply. To provide.
According to this configuration, when the operation of the on-vehicle equipment corresponding to the poor visibility is detected by the detection means, the vehicle-side wireless communication means transmits a wireless signal indicating that the vehicle is approaching, and the roadside that has received this wireless signal When the apparatus returns a wireless signal indicating that there is a dangerous place ahead, and this reply is received by the vehicle-side wireless communication means, the notification means notifies that there is a dangerous place ahead. Thereby, even when the vehicle is in a poor visibility state and it is difficult to visually recognize the dangerous place, it can be notified that the dangerous place exists ahead. In addition, the driving support system can be provided with a simple configuration without using a camera or the like.

Moreover, the said structure WHEREIN: The said roadside apparatus is good also as a structure provided with the alerting | reporting apparatus which alert | reports the approach of the said vehicle to the circumference | surroundings of the said roadside apparatus, when the radio signal which shows that the said vehicle approached is received.
In this case, when the roadside device receives a radio signal indicating that the vehicle has approached, the notification device notifies the roadside device that the vehicle is approaching. It is possible to alert a person or the like by notifying the approach of the vehicle.
The roadside device may be provided on a curved mirror installed on the road.
In this case, even when the vehicle is in a poor visibility state and it is difficult to visually recognize the dangerous part, the existence of the dangerous part where the curve mirror is installed can be notified.

Further, the on-vehicle equipment is at least one of a wiper, a light, and an air conditioner provided in the vehicle, and the detection means is that at least one of the wiper, the light, and the air conditioner is operating. It is good also as a structure which is a sensor to detect.
In this case, it is possible to detect that the vehicle is in a poor visibility state by detecting at least one of the operations of the wiper, the light, and the air conditioner with the sensor, and the vehicle approaches based on the detection result. It is possible to transmit a wireless signal indicating this.

Further, according to the present invention, when a wireless signal indicating that the vehicle is approaching is received, the wireless signal is transmitted / received to / from a roadside device provided with a wireless communication unit that transmits a wireless signal that is a reply to the wireless signal. Vehicle-side wireless communication means, and detection means for detecting the operation of the on-vehicle equipment that operates in response to a poor visibility of the vehicle, wherein the vehicle-side wireless communication means detects the operation of the on-vehicle equipment by the detection means. When a radio signal indicating that the vehicle has approached is transmitted, and a radio signal indicating that there is a dangerous point ahead is received from the roadside device that has received the wireless signal, a dangerous point is present ahead. Provided is an in-vehicle device provided with a notifying means for notifying that there is.
According to this configuration, when the operation of the on-vehicle equipment corresponding to the poor visibility is detected by the detection means, the vehicle-side wireless communication means transmits a wireless signal indicating that the vehicle is approaching, and the roadside that has received this wireless signal When the apparatus returns a wireless signal indicating that there is a dangerous place ahead, and this reply is received by the vehicle-side wireless communication means, the notification means notifies that there is a dangerous place ahead. Thereby, even when the vehicle is in a poor visibility state and it is difficult to visually recognize the dangerous place, it can be notified that the dangerous place exists ahead. In addition, the driving support system can be provided with a simple configuration without using a camera or the like.

  According to the present invention, it is possible to provide a driving support system and an in-vehicle device capable of notifying the existence of a dangerous place even when visibility is poor with a simple configuration.

It is a block diagram which shows the vehicle-mounted apparatus which concerns on the 1st Embodiment of this invention. It is the schematic which shows a driving assistance system. It is the schematic which shows a driving assistance system. The flowchart which shows the process of the vehicle-mounted apparatus in a driving assistance system. It is a flowchart which shows the process of the roadside apparatus in a driving assistance system. It is the schematic which shows the driving assistance system of 2nd Embodiment. It is a flowchart which shows the process by the side apparatus side of 2nd implementation.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a block diagram showing an in-vehicle device according to the first embodiment of the present invention.
The in-vehicle device 10 is an in-vehicle navigation device that is mounted on a vehicle such as a passenger car or a commercial vehicle and performs navigation of the vehicle.

As shown in FIG. 1, the in-vehicle device 10 includes a microcomputer 21 as a control unit that controls the in-vehicle device, a recording device 22, a recording media playback device 23, a display device 24 (notification means), and an input device 25. And a vehicle-side radio unit 26 (vehicle-side radio communication unit) that transmits and receives radio to and from the outside of the vehicle, a GPS (Global Positioning System) unit 27, and an audio output device 28 (notification unit). ing.
The microcomputer 21 functions as a control unit that performs operation control of the entire vehicle-mounted device 10 and various calculations, and has a computer configuration including a CPU, a ROM, a RAM, and the like.
The recording device 22 stores various control programs executed by the microcomputer 21 and map data used for navigation (route guidance, etc.). The recording media playback device 23 plays back the recording media on which the map information and the like necessary for navigation are recorded. For example, the recorded map information is recorded in the recording device 22 so that the map information in the recording device 22 is recorded. Updated to the latest information.

  The display device 24 is a display means for displaying various information under the control of the microcomputer 21. In this embodiment, a liquid crystal display device with a touch panel is applied. The display device 24 displays a setting screen for setting the destination, home position, and the like, a route guidance screen to the destination including the current position and the surrounding map, and the like. You can get various information and set the destination and home position.

  The input device 25 is a means for inputting various instructions from the user, has one or a plurality of operation keys, and notifies the microcomputer 21 of the operation of the operation keys. In addition to the operation keys, the input device 25 includes a touch panel provided on the display device 24, a remote controller that transmits various signals corresponding to operation commands wirelessly or by wire to the in-vehicle device 10, and remote controllers. A receiving unit for receiving signals is also provided, and the microcomputer 21 is also notified of touch panel operations and remote control operations by the user.

  The GPS unit 27 receives GPS radio waves from GPS satellites and detects the current position (coordinates indicating latitude and longitude) from the GPS signal superimposed on the GPS radio waves. That is, the GPS unit 27 functions as a current location detection unit that detects the current position of the vehicle. When the in-vehicle device 10 performs navigation, the microcomputer 21 detects the current position by the GPS unit 27, displays the detected current position together with the surrounding map on the display device 24, and also determines the user from the detected current position. Calculate the route to the destination set by. It should be noted that publicly-known techniques can be widely applied to the navigation-related part.

Further, the vehicle 1 (see FIG. 2) includes a wiper 11, a headlight 12 (light), and an air conditioner 13 provided on the windshield as in-vehicle equipment. The vehicle 1 includes the wiper 11, the headlight 12, And the wiper sensor 31, the light sensor 32, and the air-conditioner sensor 33 as a detection means which detects that the defroster of the air-conditioner 13 is operate | moving are each provided.
The on-vehicle device 10 is supplied with electric power (that is, an accessory power source) from a battery mounted on the vehicle 1 as operating power.

  The wiper sensor 31, the light sensor 32, and the air conditioner sensor 33 are connected to the microcomputer 21, and the operation states of the wiper 11, the headlight 12, and the air conditioner 13 are monitored by the microcomputer 21. When the wiper 11 is operating, it is estimated that it is raining. When the headlight 12 is operating, it is estimated that night or fog is occurring, and the defroster of the air conditioner 13 is When it is operating, it is presumed that the windshield is fogged, and in any case, this corresponds to the fact that the user driving the vehicle 1 is in a poor visibility state.

2 and 3 are schematic diagrams showing the driving support system.
The driving support system 50 includes an in-vehicle device 10 and a road-side device 40 that is provided on the road 51 and performs wireless communication with the in-vehicle device 10.
The road 51 on which the vehicle 1 is traveling is a curved section with poor visibility such as a mountain road, and the user driving the vehicle 1 is located on the outermost shoulder of the curved section from the entrance side to the exit side of the curve section. A curved mirror 41 that can overlook the road is installed. A plurality of poles 42 are provided in the vicinity of the curve mirror 41 to prevent entry into the road shoulder of a vehicle or the like.

The curve mirror 41 has a support column 41A provided on the shoulder of the road 51 and a convex mirror 41B provided on the upper end of the support column 41A. The roadside device 40 is attached below the convex mirror 41B on the support post 41A.
As shown in FIG. 1, the roadside device 40 includes a roadside radio unit 43 (wireless communication means) that performs radio communication with the vehicle side radio unit 26 of the in-vehicle device 10 and a control unit 44 that controls the roadside radio unit 43. And.

  When the in-vehicle device 10 detects that the wiper 11, the light sensor 32, and the air conditioner sensor 33 are operating at least one of the wiper 11, the headlight 12, and the air conditioner 13, the vehicle 1 becomes a roadside device 40. A transmitting side radio signal S indicating that the vehicle is approaching (a radio signal indicating that the vehicle is approaching) is transmitted from the vehicle side radio unit 26 to the outside. When the vehicle 1 approaches to a distance that allows the roadside device 40 to receive the transmission side radio signal S, the roadside device 40 that has received the transmission side radio signal S returns a reply side radio signal R indicating that the roadside device 40 exists. (A radio signal indicating that there is a dangerous point) is returned to the vehicle-side radio unit 26, and on the basis of this response, the in-vehicle device 10 performs a display for notifying the display device 24 that the vehicle has approached the curve section, and also performs audio. Voice guidance for notifying that the vehicle has approached the curve section is performed from the output device 28.

  As described above, in the driving support system 50, when any of the wiper 11, the headlight 12, and the defroster of the air conditioner 13 is operating, the vehicle 1 is considered to be in a poor visibility state, and the vehicle-side radio unit 26 is A radio signal is transmitted to the device 40, and the roadside device 40 replies wirelessly that the roadside device 40 exists in the vehicle side radio unit 26. In the driving support system 50, the fact that the roadside device 40 exists, that is, the presence of a curve section that is a dangerous point, is transmitted to the user who drives the vehicle 1 by wireless transmission and reception between the in-vehicle device 10 and the roadside device 40. Therefore, even if the visibility is poor, the user can know in advance the existence of the curve section. Thereby, since a user comes to pay more attention and can drive, an accident and a trouble in a curve section can be prevented beforehand.

Hereinafter, processing of the driving support system 50 will be described in detail.
FIG. 4 is a flowchart showing processing on the in-vehicle device 10 side in the driving support system 50.
First, on the in-vehicle device 10 side, the microcomputer 21 determines whether or not at least one of the in-vehicle equipment corresponding to the poor visibility of the vehicle 1, that is, the wiper 11, the headlight 12, and the defroster of the air conditioner 13 is operating. The determination is made by the detection of the wiper sensor 31, the light sensor 32, and the air conditioner sensor 33 (step S1). When none of the wiper sensor 31, the light sensor 32, and the air conditioner sensor 33 is operating (step S1: No), the microcomputer 21 operates at least one of the wiper 11, the headlight 12, and the defroster of the air conditioner 13. Wait until

If at least one of the wiper sensor 31, the light sensor 32, and the air conditioner sensor 33 detects the operation of the on-vehicle equipment related to the poor visibility (step S <b> 1: Yes), the microcomputer 21 drives the vehicle-side radio unit 26. The in-vehicle information, that is, the transmission side radio signal S indicating that the vehicle 1 is approaching the road side device 40 is transmitted to the road side device 40 provided in the curve mirror 41 (step S2). Here, in step S <b> 2, the vehicle-side radio unit 26 always transmits the transmission-side radio signal S toward the outside of the vehicle 1, and the vehicle 1 reaches a distance at which the road-side radio unit 43 can receive the transmission-side radio signal S. When the roadside device 40 approaches, the roadside device 40 receives the caller-side radio signal S. Further, since the vehicle-side radio unit 26 does not transmit the transmission-side radio signal S in a state where the operation of the on-vehicle equipment is not detected, the power consumption of the on-vehicle device 10 can be reduced.
Next, when the transmission-side radio signal S is received, approaching object information indicating that the vehicle 1 has approached the curve mirror 41 is acquired (step S3). Specifically, in step S3, the control unit 44 of the roadside device 40 attached to the curve mirror 41 acquires information that the vehicle 1 is approaching the curve mirror 41, and the vehicle 1 has poor visibility. Recognize that it is in a state.

Then, the roadside device 40 of the curve mirror 41 returns a reply side radio signal R indicating that the roadside device 40 exists to the in-vehicle device 10 as presence information (step S4).
Next, the vehicle-side radio unit 26 of the in-vehicle device 10 receives the reply-side radio signal R from the road-side device 40 (step S5), and the microcomputer 21 drives the vehicle 1 based on the reply-side radio signal R. Information that the curve mirror 41 exists nearby is transmitted to the user via the in-vehicle device 10 to call attention (step S6). Specifically, the microcomputer 21 displays a pop-up or the like for notifying the presence of the curve mirror 41 on the display device 24 of the in-vehicle device 10, and performs voice guidance for notifying that the curve mirror 41 exists nearby. The fact that 1 is approaching the curve section is notified, and the process is terminated.

FIG. 5 is a flowchart showing processing on the roadside device 40 side in the driving support system 50.
First, on the roadside device 40 side installed on the curve mirror 41, the control unit 44 determines whether or not the transmission side radio signal S transmitted from the in-vehicle device 10 has been received (step S11). When the transmission side radio signal S is not received (step S11: No), the control unit 44 stands by until the transmission side radio signal S is received. When the transmission side radio signal S is received (step S11: Yes), the control unit 44 acquires approaching object information indicating that the vehicle 1 has approached the curve mirror 41 (step S12). And the control part 44 drives the roadside radio | wireless part 43, returns the reply side radio signal R which shows that the roadside apparatus 40 exists with respect to the vehicle-mounted apparatus 10 as presence information (step S13), and complete | finishes a process. Here, steps S12 and S13 respectively correspond to steps S3 and S4 described in the processing on the in-vehicle device 10 side.
The roadside device 40 is normally in a standby state in which the caller-side radio signal S can be received, and returns the reply-side radio signal R only when the caller-side radio signal S is received. Thereby, it is not necessary to always transmit the reply side radio signal R to the roadside device 40, the power consumption of the roadside device 40 is reduced, and the configuration of the roadside device 40 can be simplified. The roadside device 40 can be easily added to 41.

  As described above, according to the first embodiment to which the present invention is applied, the wiper 11 and the headlight 12 which are on-vehicle equipment corresponding to poor visibility by the wiper sensor 31, the light sensor 32, and the air conditioner sensor 33. When the operation of at least one of the defrosters of the air conditioner 13 is detected, the vehicle-side wireless unit 26 transmits the transmission-side wireless signal S indicating that the vehicle 1 has approached, and receives the transmission-side wireless signal S. When the device 40 returns a reply side radio signal R indicating that there is a dangerous place ahead, and the reply side radio signal R is received by the vehicle side radio unit 26, the display device 24 and the audio output device 28 cause a danger in the front. It is notified that there is a place. Thereby, even when the vehicle 1 is in a poor visibility state and it is difficult to visually recognize the dangerous place, it can be notified that the dangerous place exists ahead. Further, the driving support system 50 can be provided with a simple configuration without using a camera or the like.

In addition, since the roadside device 40 is provided on the curve mirror 41, even if the vehicle 1 is in a poor visibility state and it is difficult to visually recognize the presence of the curve mirror 41, the presence of a dangerous spot where the curve mirror 41 is installed is detected. I can inform you.
Further, the operation of at least one of the wiper 11, the headlight 12, and the defroster of the air conditioner 13 is detected by the wiper sensor 31, the light sensor 32, and the air conditioner sensor 33, so that the vehicle 1 is in a poor visibility state. It is possible to detect the presence, and based on the detection result, it is possible to transmit a transmission side radio signal S indicating that the vehicle 1 has approached.

In addition, the said 1st Embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said 1st Embodiment.
In the said 1st Embodiment, although the roadside apparatus 40 was demonstrated as what is provided in the curve area which is a dangerous location of the road 51 which is a mountain road, this invention is not limited to this. For example, the roadside device 40 may be provided in a curve mirror installed at an intersection that is a dangerous location.
In the first embodiment, the roadside device 40 is described as being provided on the curve mirror 41. However, the present invention is not limited to this, and the roadside device 40 may be installed at a dangerous place. For example, the roadside device 40 may be installed on a guardrail.
Furthermore, in the first embodiment, the microcomputer 21 displays a pop-up or the like for notifying the presence of the curve mirror 41 on the display device 24 of the in-vehicle device 10 and notifies that the curve mirror 41 exists nearby. Although described as performing voice guidance, the present invention is not limited to this. For example, a notification light may be provided in the passenger compartment of the vehicle 1, and the microcomputer 21 may notify that the curve mirror 41 exists nearby by turning on the notification light.
In the first embodiment, the light as the on-vehicle equipment is described as the headlight 12. However, the light is not limited to this, and the light may be a fog lamp, and a sensor that detects lighting of the fog lamp. Based on this detection, the transmitting side radio signal S may be transmitted.

[Second Embodiment]
Hereinafter, a second embodiment to which the present invention is applied will be described with reference to FIGS. 6 and 7. In the second embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.
The second embodiment is different from the first embodiment in that a notification device 60 that notifies the surroundings that the vehicle is approaching is provided on the curve mirror 41 side.

FIG. 6 is a schematic diagram illustrating the driving support system 150 according to the second embodiment.
As shown in FIG. 6, the driving support system 150 includes the in-vehicle device 10 and the roadside device 40, and the notification device 60 includes a mirror-side notification unit 61 provided in the curve mirror 41 and a pole side provided in each pole 42. A notification unit 62 is provided.
The mirror-side notification unit 61 is provided below the road-side device 40 in the support post 41 </ b> A, and the pole-side notification unit 62 is provided at the upper ends of the plurality of poles 42. Further, the mirror-side notification unit 61 includes an LED light 61A and a speaker (not shown), and the pole-side notification unit 62 includes an LED light 62A and a speaker (not shown).

The mirror side notification unit 61 is connected to the roadside device 40. When the roadside device 40 receives the transmission side radio signal S, the control unit 44 turns on or blinks the LED light 61A, and the speaker of the mirror side notification unit 61. Therefore, voice guidance for notifying the surroundings that the vehicle 1 is approaching is performed.
The pole-side notification unit 62 includes a wireless reception unit (not shown). When the reply-side wireless signal R is received by this wireless reception unit, the LED light 62A is turned on or blinked, and a speaker of the pole-side notification unit 62 is provided. Therefore, voice guidance for notifying the surroundings that the vehicle 1 is approaching is performed. That is, the pole-side notifying unit 62 operates by receiving a reply-side radio signal R that is a reply to the transmitting-side radio signal S, and operates in conjunction with the mirror-side notifying unit 61.

FIG. 7 is a flowchart showing processing on the roadside device 40 side in the driving support system 150.
Of the processes included in the operation shown in FIG. 7, steps that perform the same processes as in FIG. 5 in the first embodiment described above are given the same numbers.
First, on the roadside device 40 side, the control unit 44 determines whether or not the caller-side radio signal S transmitted from the in-vehicle device 10 has been received (step S11). When the transmission side radio signal S is not received (step S11: No), the control unit 44 stands by until the transmission side radio signal S is received. When the transmission side radio signal S is received (step S11: Yes), the control unit 44 acquires approaching object information indicating that the vehicle 1 has approached the curve mirror 41 (step S12).

And the control part 44 drives the roadside radio | wireless part 43, and returns with respect to the vehicle-mounted apparatus 10 by using the reply side radio signal R which shows that the roadside apparatus 40 exists as presence information (step S13). Thereafter, the control unit 44 turns on or blinks the LED light 61 </ b> A, and performs voice guidance for notifying the vehicle 1 that the vehicle 1 is approaching from the speaker of the mirror-side notification unit 61 to surround the curve mirror 41. Attention is drawn (step S14), and the process is terminated.
Further, the pole-side notification unit 62 receives the reply-side wireless signal R transmitted in step S13, turns on or blinks the LED light 62A, and the vehicle 1 is approaching from the speaker of the pole-side notification unit 62. Voice guidance that informs the surroundings is performed.

  Thus, in the driving support system 150, when the roadside device 40 receives the transmission side radio signal S from the in-vehicle device 10 that has detected that the in-vehicle equipment corresponding to the poor visibility is operated, the control unit 44 causes the LED light 61A to be turned on. While turning on or blinking, the speaker of the mirror side notification unit 61 performs voice guidance for notifying the surroundings that the vehicle 1 is approaching. Thereby, attention can be drawn to the vehicle including the oncoming vehicle that does not have the in-vehicle device 10, the pedestrian near the curve mirror 41, the bicycle, and the like by the voice guidance of the LED light 61A and the speaker. Further, since the pole-side notification unit 62 operates in conjunction with the mirror-side notification unit 61, attention can be drawn to a wider range including the periphery of the pole 42.

  Moreover, since the roadside device 40 notifies the surroundings of the approach of the vehicle 1 by the mirror side notification unit 61 only when the transmission side radio signal S from the in-vehicle device 10 is received, an object other than the vehicle approaches the roadside device 40. Even in this case, the mirror side notification unit 61 does not operate. Further, the pole side notification unit 62 does not operate unless the roadside device 40 receives the transmission side radio signal S from the in-vehicle device 10. As described above, the mirror-side notification unit 61 and the pole-side notification unit 62 operate only when the transmission-side wireless signal S is received from the in-vehicle device 10, so that the vehicle 1 is approaching the road-side device 40. It is possible to report accurately.

The second embodiment shows one aspect to which the present invention is applied, and the present invention is not limited to the second embodiment.
In the second embodiment, when the pole-side notifying unit 62 receives the reply-side radio signal R by the wireless receiving unit, the pole-side notifying unit 62 turns on or blinks the LED light 62A, and from the speaker of the pole-side notifying unit 62, Although the description has been made on the assumption that voice guidance for notifying the surroundings that 1 is approaching is performed, the present invention is not limited to this. For example, a sensor that detects the lighting of the LED light 61A is provided in the pole-side notification unit 62, and when the lighting of the LED light 61A is detected by this sensor, the pole-side notification unit 62 operates and the approach of the vehicle 1 is It is good also as a structure alert | reported to. Alternatively, the pole side notification unit 62 may be connected to the roadside device 40 by wiring or the like, and the control unit 44 may be controlled to interlock the mirror side notification unit 61 and the pole side notification unit 62.

1 vehicle 10 in-vehicle device 11 wiper (equipped in-vehicle)
12 Headlight (equipped in-vehicle)
13 Air conditioner (equipped on vehicle)
24 display device (notification means)
26 Vehicle-side radio unit (vehicle-side radio communication means)
28 Audio output device (notification means)
31 Wiper sensor (detection means)
32 Light sensor (detection means)
33 Air conditioner sensor (detection means)
40 Roadside device 41 Curve mirror 43 Roadside radio unit (wireless communication means)
50, 150 Driving support system 51 Road 60 Notification device R Reply-side radio signal (radio signal indicating that there is a dangerous point)
S Sender radio signal (radio signal indicating that the vehicle is approaching)

Claims (5)

A roadside device provided with wireless communication means for transmitting a wireless signal that is a reply to the wireless signal when a wireless signal indicating that the vehicle has approached is received;
A vehicle-side wireless communication unit that is provided in the vehicle and transmits / receives a radio signal to / from the wireless communication unit; and a detection unit that detects an operation of the on-vehicle equipment that operates in response to a poor visibility of the vehicle,
The vehicle-side wireless communication means transmits a wireless signal indicating that the vehicle is approaching when the operation of the in-vehicle equipment is detected by the detecting means, and the roadside device that has received the wireless signal is forwarded. A driving support system comprising a notifying means for returning a radio signal indicating that there is a dangerous place and notifying that there is a dangerous place ahead when the reply is received by the vehicle-side wireless communication means. .   2. The driving according to claim 1, wherein the roadside device includes a notification device for notifying the vicinity of the roadside device of the approach of the vehicle when receiving a radio signal indicating that the vehicle is approaching. Support system.   The driving support system according to claim 1, wherein the roadside device is provided on a curved mirror installed on a road.   The on-vehicle equipment is at least one of a wiper, a light, and an air conditioner provided in the vehicle, and the detection unit detects that at least one of the wiper, the light, and the air conditioner is operating. The driving support system according to claim 3, wherein the driving support system is a sensor. Vehicle-side wireless communication means for transmitting / receiving a wireless signal to / from a roadside device having a wireless communication means for transmitting a wireless signal that is a reply to the wireless signal when a wireless signal indicating that the vehicle has approached is received; Detecting means for detecting the operation of the on-vehicle equipment that operates in response to the poor visibility of the vehicle,
The vehicle-side radio communication means transmits a radio signal indicating that the vehicle has approached when the operation of the on-vehicle equipment is detected by the detection means, and forwards from the road-side device that has received the radio signal. An in-vehicle device comprising an informing means for informing that there is a dangerous place ahead when a radio signal indicating that there is a dangerous place is received.

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