JP2000313278A - Vehicle light control device - Google Patents

Abstract

(57) [Summary] [Problem] Without giving the driver of the following vehicle distrust
To provide a vehicle light control device capable of reducing the risk of a rear-end collision. SOLUTION: The detection signal of the current or immediately following braking state of the own vehicle detected by an own vehicle braking state detecting means 1 and the detection accuracy of the own vehicle braking state set by an own vehicle braking state detection accuracy setting means 3 are provided. When the following vehicle approach detection means 5 detects that the degree of approach of the following vehicle to the own vehicle is equal to or lower than a predetermined level, the content of the notification is determined by the notification means of the notification means determined by the controller based on the notification content. The notification content is determined by the controller based on the content detected by the following vehicle approach detection means in preference to the above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for lights used to notify a following vehicle of a braking condition of a running own vehicle to a following vehicle.

[0002]

2. Description of the Related Art For example, Japanese Patent Application Laid-Open No. Hei 8
There is one disclosed in JP-A-132959. According to this conventional technique, emergency braking of the host vehicle is predicted from a speed in a release direction of an accelerator pedal operated by a driver, and a stop lamp is turned on for a predetermined time prior to an actual brake pedal operation. Also, Japanese Patent Application Laid-Open No. 07-076235
Japanese Patent Application Laid-Open No. 09-0396 discloses a technique for turning on a stop lamp when an automatic brake is operating.
No. 56 describes a technique of turning on a hazard lamp when an anti-brake skid device operates. These technologies aim to reduce the risk of a rear-end collision accident by appropriately notifying the following vehicle of the braking situation of the own vehicle using lights.

[0003]

However, when controlling the lamps by using a plurality of braking condition detecting means by combining the above-mentioned conventional methods, a simple combination of the braking condition detecting means is used for notification. However, since the deceleration occurring in the own vehicle, that is, the possibility of occurrence of a rear-end collision differs depending on each detected braking situation, there is a problem that it is difficult to determine an appropriate notification content corresponding to the braking situation. . Further, if the braking situation is detected erroneously or if the content of the notification is not given in consideration of the relationship with the following vehicle, the driver of the following vehicle will be distrusted, and a sufficient notification effect cannot be obtained. There was a problem that there is a possibility.

The present invention has been made in order to solve these problems, and an object of the present invention is to provide a method for detecting a given vehicle's braking condition and detecting a following vehicle with respect to the vehicle when a given vehicle's braking condition is detected. To provide a vehicular light control device that can reduce the risk of a rear-end collision accident without giving a driver of a following vehicle distrust by determining the notification content of lights in consideration of the approach situation. is there.

[0005]

In order to achieve the above object, the present invention according to the first aspect of the present invention comprises a plurality of means for detecting the current braking state of the own vehicle or predicting the braking state immediately after the own vehicle. Braking state detecting means, own vehicle braking state detection accuracy setting means for setting the detection accuracy of the own vehicle braking state detecting means, notifying means for notifying a plurality of braking states of the own vehicle, and the approach of a following vehicle to the own vehicle A following vehicle approach detecting means for measuring the degree and detecting that the degree of approach is equal to or less than a predetermined level; signals from the own vehicle braking state detecting means, own vehicle braking state detection accuracy setting means, and following vehicle approach detecting means A vehicle light control device comprising: a notification content determining unit that controls the notification content of the notification unit based on
The notification content determination means is configured to provide a notification determined based on signals from the host vehicle braking situation detection means and the host vehicle braking situation detection accuracy setting means when the following vehicle approach detection means detects the approach of a following vehicle. The content of the notification is controlled based on the content detected by the following vehicle approach detecting means prior to the content.

According to a second aspect of the present invention, in the vehicle light control apparatus according to the first aspect, when the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, the own vehicle braking is performed. The notification content of the notification means is determined based on the detection accuracy set by the situation detection accuracy setting means.

According to a third aspect of the present invention, in the vehicle light control device according to the first or second aspect, the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, and In the case where the braking state of the own vehicle is detected by a plurality of detecting means in the braking state detecting means, priority is given to the notification content corresponding to the braking state signal having the highest detection accuracy set by the own vehicle braking state detection accuracy setting means. It is characterized by reporting.

According to a fourth aspect of the present invention, there is provided the vehicle light control device according to the first to third aspects, wherein the predetermined braking condition is set within a predetermined time after the braking condition is predicted by the own vehicle braking condition detecting means. A braking prediction result determining unit that determines whether or not the vehicle has occurred, and stores the detection accuracy setting in the own vehicle braking situation detection accuracy setting unit in the own vehicle braking situation determination result and the own vehicle braking situation detection accuracy setting unit. It is characterized in that the detection is performed using the detected accuracy value.

According to a fifth aspect of the present invention, in the vehicle light control device according to the first to fourth aspects, the following vehicle approach determination reference variable setting means for variably setting the approach determination reference in the subsequent vehicle approach detection means is provided. It is characterized by having.

According to a sixth aspect of the present invention, in the vehicle light control device according to the first to fifth aspects, the notifying means is a stop lamp, and the self-vehicle braking situation detection accuracy setting means is provided in the notifying content determining means. The notification content of the notification means determined according to the detection accuracy calculated in (1) is characterized in that the luminous intensity of the lamp light source is higher when the detection accuracy is higher than when the detection accuracy is lower.

According to a seventh aspect of the present invention, in the vehicle light control device according to the first to fifth aspects, the notifying means is a stop lamp, and the self-vehicle braking situation detection accuracy setting means in the notifying content determining means. The notification content of the notification means determined according to the detection accuracy calculated in (1) is characterized in that the lamp lighting display area is larger when the detection accuracy is higher than when the detection accuracy is lower.

According to an eighth aspect of the present invention, in the vehicle light control device according to the first to fifth aspects, the notifying means is a stop lamp, and the own vehicle braking condition detected by the own vehicle braking condition detecting means. And a notification content determined based on the braking situation detection accuracy set by the host vehicle braking situation detection accuracy setting means is preferentially determined based on a following vehicle approach signal detected by the following vehicle approach detecting means. The content of the notification is characterized in that the lamp lighting display area is enlarged.

According to a ninth aspect of the present invention, in the vehicle light control device according to the first to fifth aspects, the notifying means is a stop lamp, and the own vehicle braking condition detected by the own vehicle braking condition detecting means. And a notification content determined based on the braking situation detection accuracy set by the host vehicle braking situation detection accuracy setting means is preferentially determined based on a following vehicle approach signal detected by the following vehicle approach detecting means. The content of the notification is that the luminous intensity of the lamp light source is increased.

The operation of the present invention will be described below. According to the above configuration, in the vehicle light control device according to the first aspect of the present invention, the detection signal of the current or immediately following braking state of the own vehicle detected by the own vehicle braking state detecting means, and the detection accuracy of the own vehicle braking state In response to the notification content of the notification means determined by the notification content determination means based on the detection accuracy of the braking situation of the own vehicle set by the setting means, the following vehicle approach detection means determines the degree of approach of the following vehicle to the own vehicle by a predetermined level. When the following is detected, the notification content is determined by the notification content determination unit based on the content detected by the following vehicle approach detection unit prior to the notification content, so that the following vehicle approach The following vehicle can be notified of the braking situation of the own vehicle corresponding to the situation.

In the vehicle light control device according to the present invention, when the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, it is set by the own vehicle braking situation detection accuracy setting means. Since the notification content of the notification means is determined based on the detection accuracy, it is possible to reliably report the braking condition of the own vehicle while preventing erroneous notification.

According to a third aspect of the present invention, there is provided a vehicle lighting control apparatus according to the present invention, wherein the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, and the plurality of detecting means in the own vehicle braking state detecting means. When the braking condition of the host vehicle is detected, priority is given to the notification content corresponding to the braking condition signal having the highest detection accuracy set by the host vehicle braking condition detection accuracy setting means, thereby preventing erroneous notification. Thus, it is possible to reliably report the braking situation of the host vehicle.

According to a fourth aspect of the present invention, there is provided a vehicle lighting control apparatus for predicting whether or not a predetermined braking condition has occurred within a predetermined time after a braking condition is predicted by a vehicle braking condition detecting means. It is determined by the result determination means, and the detection accuracy setting in the own vehicle braking situation detection accuracy setting means is performed using the determination content of the braking prediction result and the detection accuracy value stored in the own vehicle braking situation detection accuracy setting means. This makes it possible to set the detection accuracy of the own vehicle braking state appropriate for the characteristics of the driver and the traffic situation.

According to the fifth aspect of the present invention, since the vehicle lighting control apparatus of the present invention includes the following vehicle approach determination reference variable setting means for variably setting the approach determination reference in the following vehicle approach detecting means, the self-vehicle braking condition is notified. Can be performed appropriately in accordance with the traveling environment and traffic conditions.

According to a sixth aspect of the present invention, there is provided a vehicle light control device according to the present invention, wherein a stop lap as a notifying means determined by the notifying content determining means corresponding to the detection accuracy set by the own vehicle braking situation detection accuracy setting means. When the detection accuracy is low, the luminous intensity of the lamp light source is increased as compared with the case where the detection accuracy is low. And, when the detection accuracy is high, it is possible to reliably report the braking state of the host vehicle.

According to a seventh aspect of the present invention, there is provided a stoplight as a notifying means determined by the notifying content determining means in accordance with the detection accuracy set by the own vehicle braking situation detection accuracy setting means. If the detection accuracy is low, the lamp lighting display area is increased compared to the case where the detection accuracy is low, and if the detection accuracy is low, the driver is inadvertently informed of the braking situation of the own vehicle. This makes it possible to prevent a sense of inconvenience and to reliably report the braking situation of the host vehicle when the detection accuracy is high.

In the vehicle light control device according to the present invention, when the approaching of the following vehicle is detected by the following vehicle approach detecting means, the stop as the notification means which is preferentially determined by the notification content determining means is provided. By increasing the lamp lighting display area of the lamp lighting, it is possible to reliably inform the driver of the succeeding vehicle of the braking situation of the own vehicle when the following vehicle is approaching the own vehicle. become.

According to a ninth aspect of the present invention, when the approaching of the following vehicle is detected by the following vehicle approach detection means, the notification content determination means gives priority to the stop as the notification means. By increasing the lighting content of the lamp by increasing the luminous intensity of the lamp light source, it is possible to reliably inform the driver of the following vehicle of the braking condition of the own vehicle when the following vehicle is approaching the own vehicle. Become.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a vehicle light control device according to an embodiment of the present invention.

Hereinafter, in order to explain the embodiment of the present invention, as a means for detecting the current braking state of the host vehicle, the state of the automatic braking operation in the collision speed reduction device and the braking state immediately after the present time are predicted. As the means, the state of the presence or absence of a warning of the dozing warning device, the state of the presence or absence of the warning of the inter-vehicle distance warning device, and the emergency braking prediction state based on the accelerator pedal return speed are used. The collision speed reduction device detects obstacles in front of the host vehicle with a laser radar, etc., and automatically brakes when it is difficult to stop safely in front of the obstacle based on the running speed of the host vehicle and the distance to the obstacle. It is a device for performing. In addition, the drowsy driving alarm device estimates the degree of arousal from the eye opening / closing pattern obtained by performing image processing on the driver's face image captured by the CCD camera installed on the instrument panel, and detects the low arousal state. This is a device that alerts the driver by giving an alarm when it is done. The inter-vehicle distance alarm device has the same configuration as the collision speed reduction device, and gives an alarm to the driver when the degree of approach to the preceding vehicle is equal to or lower than a predetermined level. All of these devices have been used in the Advanced Safety Vehicle (ASV) project led by the Ministry of Transport in the period from 91 to 1995, including a "sleeping alarm system", a "collision speed reduction system", and an "emergency braking notification system for following vehicles". This technology was installed in experimental vehicles. The inter-vehicle distance warning device is a disclosed technology that has already been put to practical use. The braking condition detecting means of the own vehicle is constituted by any means as a design matter including these devices.

(First Embodiment) FIG. 1 is a block diagram showing a schematic configuration of a first embodiment of a vehicle light control device according to the present invention. As shown in FIG. 1, the first embodiment includes a host vehicle braking situation detection unit 1, a host vehicle braking situation detection accuracy setting unit 3, a following vehicle approach detection unit 5, a notification content determination unit 7, and a notification unit 9. Be composed.

FIG. 2 is a block diagram showing a functional configuration of the first embodiment. As shown in FIG. 2, a collision speed reduction device controller 11, an inter-vehicle distance alarm device controller 13, a dozing driving alarm device controller 15, an emergency braking prediction controller 17 for predicting braking of the own vehicle from an accelerator pedal return speed, Radar 19, radar controller 21 for own vehicle rear, electronic control unit 2
3, a stop lamp driving circuit 25, a hazard lamp driving circuit 27, a stop lamp 29, and a hazard lamp 31.

The collision speed reduction device controller 11 outputs an automatic brake operation signal, the inter-vehicle distance alarm device controller 13 issues an inter-vehicle distance warning, the dozing operation alarm device controller 15 shows a dozing operation alarm.
The emergency braking prediction controller 17 inputs signals indicating the presence or absence of emergency braking prediction to the electronic control unit 23. A laser radar or the like is used as the radar 19 for the rear of the vehicle. The own vehicle rear radar 19 detects the following vehicle, and the radar controller 21 determines the following degree of the following vehicle as approaching the own vehicle.
For example, TTC (inter-vehicle distance /
Relative speed) is calculated and input to the electronic control unit 23. A microcomputer or the like is used for the electronic control unit 23. Each of the above-described braking condition detection signals is transmitted via a digital interface circuit such as serial communication when the detection signal is a bit value, and via an analog interface circuit when the detection signal is an electric signal. After input, the data is A / D converted and used.

The electronic control unit 23 obtains the obtained braking condition detection signals of the own vehicle, the detection accuracy set for each braking condition, and the degree of approach of the following vehicle to the own vehicle input from the radar controller 21. The notification content is determined based on the following vehicle approach content determined using the information. Based on the content of the notification, an electric signal for turning on the stop lamp 29 or the hazard lamp 31 as the notification unit is:
It is sent to the stop lamp drive circuit 25 or the hazard lamp drive circuit 27, and the stop lamp 29 and the hazard lamp 31 operate. The stop lamp drive circuit 25 and the hazard lamp drive circuit 27 are OR circuits of a signal from the electronic control unit 23, a brake pedal switch, and a hazard switch, respectively, and operate a brake pedal, a hazard switch, and a light-on command signal in the electronic control unit 23. , And when both the switch operation signal and the command signal from the electronic control unit 23 are input, the command signal from the electronic control unit 23 is given priority.

Further, the contents of control processing in the electronic control unit 23 will be described with reference to FIG. The control process in the electronic control unit is executed as a timer interrupt process for a predetermined main program every predetermined time (for example, 10 msec).

In the control processing, first, it is determined whether or not the notification control based on the braking state is being executed. Step S
If the check is not completed in step 101, step S
Proceeding to 103, it is determined whether n types of braking conditions have been detected. If detection is in progress, step S
At 105, it is determined whether the predetermined time ti has elapsed. If the predetermined time has elapsed, the notification execution flag Fi is cleared at step S107.

Next, in step S109, the braking condition detection signals S {s1. In step S111, the detection accuracy A of each braking condition
{A1 ... an} is set. When an inter-vehicle distance warning is issued, when a drowsiness driving warning is issued, and when braking is predicted by the accelerator return speed, which is used as an example for describing the first embodiment described above, the braking situation is predicted in advance. Since the driver does not always perform the brake operation, the prediction accuracy is less than 1. The detection accuracy ai of each braking condition is determined by using a constant value measured by performing a field test or the like in advance or by defining already obtained statistical data as a variable to be updated based on the latest prediction result as described later. There are three methods, and the detection accuracy ai is set by one of the methods.

In step S113, a notification content candidate Yf corresponding to the detection accuracy is determined for a signal in which the braking condition detection signal bpi is true. As a method of determining the content of the notification,
For example, three levels of level Aps depending on the level of detection accuracy
A method of setting H, ApsM, and ApsL and determining the notification content according to the level. For example, in the case of ApsH, the stop lamp and the hazard lamp whose luminous intensity is increased more than usual are lit for a predetermined time, and in the case of ApsM, the stop whose luminous intensity is increased. For example, the lamp is lit for a predetermined time, and in the case of ApsL, the correspondence between the two is performed in advance so that the higher the detection accuracy is, the higher the notification intensity becomes, as in the stop lamp lit for a predetermined time. When a plurality of braking status signals are detected, a signal having a higher detection accuracy is prioritized. Step S1
At 15, the following vehicle proximity L output from the rear radar controller 21 is read.

In step S117, it is determined whether or not the degree of approach L of the following vehicle is lower than a predetermined reference value Lo. If the degree of approach L of the following vehicle is equal to or greater than the predetermined reference value Lo, the notification content candidate Yf determined in step S113 in step S119 is set as the notification content Y. On the other hand, when the degree of approach L of the following vehicle is less than the predetermined reference value Lo, Y is a notification content that increases the notification intensity of the predetermined notification content Ya or Yf by a predetermined level. In step S123, a signal for lighting the lamps corresponding to the notification content Y determined in these processes is output to the drive circuit.

The flow from step S125 is a flow relating to the update processing of the notification execution flag. If it is confirmed in step S127 that the braking situation has been detected,
In step S129, the execution flag becomes true, and in step S131, the timer counter is incremented.

In the first embodiment, a plurality of detection levels may be provided for the same braking condition detection target, and different notification contents may be set. Further, a plurality of levels for judging the approach of the following vehicle from the degree of approach of the following vehicle may be provided, and different notification contents may be set. In addition, as the notification content corresponding to the high detection accuracy, the display area of the stop lamp may be enlarged, or the both may be combined, instead of increasing the luminous intensity of the stop lamp light source.

(Second Embodiment) Further, another embodiment of the present invention will be described. 4 to 7 show a schematic configuration of a vehicle light control device according to a second embodiment of the present invention. This is obtained by adding a braking prediction result determining means 31 to the schematic configuration of FIG.

The functional configuration of the second embodiment is the same as the functional configuration of FIG. 2, except that the processing contents in the electronic control unit 23 in FIG. 2 are changed. Further, the details of the processing control in the electronic control unit 23 will be described in detail with reference to FIGS. An operation unique to the present embodiment different from FIG. 3 will be described.

The prediction result determination flag Fji is set in step S1 when the own vehicle braking situation detection signal si rises.
51 becomes true, and the flag is turned on in step S153. In step S155, it is determined whether the prediction result determination flag Fji is true for the detection target for predicting the own vehicle braking situation. If the prediction result determination flag Fji is true, it is determined in step S153 whether or not the brake pedal is operated, and if the brake switch is ON, the flag BSWi is turned ON in step S155. It is determined in step S163 whether the braking prediction determination timer counter Tpi has passed a predetermined determination time Tpio.
To judge. If the predetermined time has elapsed, the brake pedal operation flag is checked in step S165,
When the flag is ON, the number Sti of positively detected samples is added. Further, the number of detected samples NTi is added. The detection accuracy ai is updated in step S171 using the new correct detection sample number STi and the new detection sample number NTi.

If the predetermined time has not elapsed from the braking prediction result determination timer in step S163, the timer counter is incremented in step S161. The above processing is executed for a detection target for predicting the braking situation of the host vehicle.

(Third Embodiment) Further, another embodiment will be described. FIG. 8 shows a schematic configuration of a vehicle light control device according to a third embodiment of the present invention. FIG.
The following configuration is obtained by adding a following vehicle approach determination reference setting means to the schematic configuration of the above. FIG. 9 shows a functional configuration of the third embodiment of the present invention. The functional configuration of the present embodiment is obtained by adding a wiper switch 61, a road surface condition determination signal 63, and a light switch 65 to the functional configuration of FIG.

Further, a detailed operation of the electronic control unit 23 will be described with reference to the flowcharts of FIGS.

In step S201, the operation position of the wiper switch is read. If the operation of the wiper switch is detected in step S203, step S205
Then, the following vehicle approach determination reference value Lo is updated according to the wiper motor operation period Tw (see FIG. 12). In addition, a road surface condition determination signal R is read in step S207 from the anti-brake skid device, the road-vehicle communication system, and the like. The road condition Re estimated from the road condition determination signal is stored in the stored condition R.
If it is different from e ', the predetermined value Lo for following vehicle approach determination is updated in step S211 (see FIG. 13). In step S213, the operation signal of the light switch is read. When the operation of the light switch is detected, the following vehicle approach determination reference value Lo is updated in step S217 (see FIG. 14).

[0043]

As described above, according to the present invention, the following effects can be obtained. In the vehicle light control device according to the first aspect of the present invention, the detection signal of the current or immediately following braking state of the own vehicle detected by the own vehicle braking state detecting means and the detection signal set by the own vehicle braking state detection accuracy setting means are provided. In response to the notification content of the notification means determined by the controller based on the detection accuracy of the own vehicle braking situation, the following vehicle proximity detection means has detected that the degree of approach of the following vehicle to the own vehicle is equal to or less than a predetermined level. In this case, the controller determines the content of the notification based on the content detected by the following vehicle approach detection means prior to the content of the notification, so that the braking status of the own vehicle corresponding to the approach status of the following vehicle is determined. This has the effect of being able to notify the car.

In the vehicle light control device according to the second aspect of the invention, when the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, it is set by the own vehicle braking situation detection accuracy setting means. Since the notification content of the notification means is determined based on the detection accuracy, it is possible to provide an accurate notification of the braking situation of the vehicle in which erroneous notification is prevented.

In the vehicle light control device according to the third aspect of the present invention, the approach of the following vehicle to the own vehicle is not detected by the following vehicle approach detecting means, and the plurality of detecting means in the own vehicle braking state detecting means are used. When the braking condition of the host vehicle is detected, priority is given to the notification content corresponding to the braking condition signal having the highest detection accuracy set by the host vehicle braking condition detection accuracy setting means, thereby preventing erroneous notification. This has the effect of enabling the reliable notification of the braking situation of the host vehicle.

According to a fourth aspect of the present invention, there is provided a vehicle lighting control apparatus for predicting whether or not a predetermined braking situation has occurred within a predetermined time after the braking situation is predicted by the vehicle braking situation detecting means. The determination by the result determination means is performed, and the detection accuracy setting by the own vehicle braking situation detection accuracy setting means is performed using the braking situation determination result and the detection accuracy value stored in the own vehicle braking situation detection accuracy setting means. This makes it possible to appropriately set the detection accuracy of the own vehicle braking state in accordance with the characteristics of the vehicle and the traffic situation.

In the vehicle light control device according to the fifth aspect of the present invention, there is provided the following vehicle approach determination predetermined level setting means for variably setting the approach determination predetermined level in the following vehicle approach detection means, so that the vehicle braking condition of the own vehicle is determined. There is an effect that the notification can be appropriately performed according to the traffic situation.

According to a sixth aspect of the present invention, there is provided a vehicular lamp control apparatus according to the present invention, in which a stop lamp as a notifying means determined by a controller in accordance with the detection accuracy set by the own vehicle braking condition detection accuracy setting means. When the detection accuracy is high, the luminous intensity of the lamp light source is increased as compared with the case where the detection accuracy is low. ,
When the detection accuracy is high, it is possible to surely notify the braking state of the own vehicle.

According to a seventh aspect of the present invention, there is provided a vehicular lamp control apparatus according to the present invention, in which a stop lamp as a notifying means determined by a controller in accordance with the detection accuracy set by the own vehicle braking condition detection accuracy setting means. When the detection accuracy is high, the lamp lighting display area is made larger than when the detection accuracy is low, thereby preventing the driver from mistrusting the driver of the own vehicle's braking situation when the detection accuracy is low. In addition, when the detection accuracy is high, it is possible to surely notify the braking state of the vehicle.

In the vehicle light control device according to the present invention, when the approaching of the following vehicle is detected by the following vehicle detecting device, the stop lamp is turned on as a notification device which is preferentially determined by the controller. By enlarging the content of the lamp lighting display area, it is possible to reliably notify the driver of the following vehicle of the braking condition of the own vehicle when the following vehicle is approaching the own vehicle, It has the effect of.

According to the ninth aspect of the present invention, when the approaching of the following vehicle is detected by the following vehicle approach detecting means, the stop lamp is turned on as a notification means which is preferentially determined by the controller. By increasing the luminous intensity of the lamp light source, it is possible to reliably notify the driver of the following vehicle of the braking condition of the own vehicle when the following vehicle is approaching the own vehicle. Has an effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a vehicle light control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a functional configuration according to the first embodiment.

FIG. 3 is a processing flowchart of an electronic control unit according to the first embodiment.

FIG. 4 is a block diagram showing a schematic configuration of a vehicle light control device according to a second embodiment of the present invention.

FIG. 5 is a block diagram illustrating a functional configuration according to a second embodiment.

FIG. 6 is a processing flowchart of an electronic control unit according to the second embodiment.

FIG. 7 is a processing flowchart of an electronic control unit according to the second embodiment.

FIG. 8 is a block diagram showing a schematic configuration of a vehicle light control device according to a third embodiment of the present invention.

FIG. 9 is a block diagram illustrating a functional configuration according to a third embodiment.

FIG. 10 is a processing flowchart of an electronic control unit according to the third embodiment.

FIG. 11 is a processing flowchart of an electronic control unit according to the third embodiment.

FIG. 12 is a diagram illustrating a setting example of a relationship between a wiper motor cycle and a following vehicle approach determination reference value in the third embodiment.

FIG. 13 is a diagram illustrating a setting example of a relationship between a road surface condition and a following vehicle approach determination reference value according to the third embodiment.

FIG. 14 is a diagram illustrating a setting example of a relationship between a light switch and a following vehicle approach determination reference value according to the third embodiment.

FIG. 15 is a diagram showing an example of the appearance of the front side of the vehicle according to the present invention.

FIG. 16 is a perspective view of a rear portion of the vehicle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 collision speed reduction device controller 13 inter-vehicle distance alarm device controller 15 dozing driving alarm device controller 17 emergency braking prediction controller 19 own vehicle rear radar 21 own vehicle rear radar controller 23 electronic control unit 301 face imaging CCD camera 303 laser radar 305 Accelerator pedal opening sensor 307 Light switch 309 Wiper switch

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F02D 29/02 341 G08G 1/16 A G08G 1/16 B60R 21/00 621S 621D 626D F-term (Reference) 3D044 AA25 AA31 AA35 AA45 AB01 AC01 AC15 AC24 AC26 AC51 AC56 AC59 AE03 AE04 AE07 AE27 3D046 BB18 HH00 HH05 HH20 HH45 MM34 3G093 AA01 BA07 BA14 BA23 BA24 CB10 DA06 DB00 DB05 DB15 DB16 DB18 DB23 EA09 MB11 MB08 MB11 MB08 MD10 QA00 5H180 AA01 CC03 CC04 CC14 LL01 LL02 LL04 LL06 LL09 LL20

Claims (9)

[Claims] 1. A host vehicle braking condition detecting means comprising a plurality of means for detecting a current braking condition of a host vehicle or predicting a braking condition immediately after the host vehicle, and a host vehicle setting the detection accuracy of the host vehicle braking condition detecting device. Braking situation detection accuracy setting means; reporting means for reporting a plurality of braking situations of the own vehicle; and a following vehicle approach that measures the degree of approach of the following vehicle to the own vehicle and detects that the degree of approach is below a predetermined level. Detecting means; and a notification content determining means for determining the notification content of the notification means based on a signal from the host vehicle braking situation detection means, the host vehicle braking situation detection accuracy setting means, and the following vehicle approach detection means. A vehicle light control device, wherein the notification content determining means includes: when the approaching of a following vehicle is detected by the following vehicle approach detecting means, the own vehicle braking state detecting means; A lamp for a vehicle, wherein the content of the notification is controlled based on the content detected by the following vehicle approach detection unit prior to the notification content determined based on a signal from the vehicle braking situation detection accuracy setting unit. Control device. 2. The vehicle light control device according to claim 1, wherein when the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, the following vehicle detecting state detecting accuracy setting means sets the following. A notification device for a vehicle, wherein the content of notification by the notification unit is determined based on the set detection accuracy. 3. The vehicle light control device according to claim 1, wherein the following vehicle approach detecting means does not detect the approach of the following vehicle to the own vehicle, and the vehicle vehicle braking situation detecting means detects the following vehicle. When a plurality of detecting means detect the braking condition of the own vehicle, the notification content corresponding to the braking condition signal having the highest detection accuracy set by the own vehicle braking condition detection accuracy setting means is notified with priority. A vehicle light control device characterized by the above-mentioned. 4. The vehicle light control device according to claim 1, wherein a predetermined braking condition occurs within a predetermined time after a braking condition is predicted by said own vehicle braking condition detecting means. A braking prediction result determining unit that determines whether or not the detection accuracy setting in the own vehicle braking situation detection accuracy setting unit is stored in the braking prediction result determination content and the own vehicle braking situation detection accuracy setting unit. A vehicular light control device, wherein the detection is performed using a detection accuracy value. 5. The vehicle light control device according to claim 1, further comprising: a following vehicle approach determination reference variable setting unit that variably sets an approach determination reference in the following vehicle approach detection unit. Characteristic vehicle light control device. 6. The vehicle light control device according to claim 1, wherein the notifying unit is a stop lamp, and the stop unit is configured to detect the stop lamp based on a detection accuracy set by the host vehicle braking condition detection accuracy setting unit. The notification content of the notification means determined by the notification content determination means is such that the luminous intensity of the lamp light source is higher when the detection accuracy is higher than when the detection accuracy is lower. 7. The vehicular lamp control device according to claim 1, wherein the notifying unit is a stop lamp, and the notification unit is configured to detect a stop lamp based on a detection accuracy set by the host vehicle braking condition detection accuracy setting unit. The notification content of the notification means determined by the notification content determination means has a larger lamp lighting display area when the detection accuracy is high than when the detection accuracy is low. 8. The vehicle lighting control device according to claim 1, wherein the notifying unit is a stop lamp, and the self-vehicle braking status detected by the self-vehicle braking status detection unit and the self-vehicle braking status are determined. The notification content determined based on the braking condition detection accuracy set by the vehicle braking condition detection accuracy setting means is preferentially determined based on the following vehicle approach signal detected by the following vehicle approach detection means. The content of the notification is an enlargement of a lamp lighting display area, wherein the lighting control device for a vehicle is characterized in that: 9. The vehicle light control device according to claim 1, wherein the notifying means is a stop lamp, and the self-vehicle braking situation detected by the self-vehicle braking situation detecting means and the self-vehicle braking situation. The notification content determined based on the braking condition detection accuracy set by the vehicle braking condition detection accuracy setting means is preferentially determined based on the following vehicle approach signal detected by the following vehicle approach detection means. The content of the notification is an increase in the luminous intensity of the lamp light source.