DE112015000723T5 - Headlight control device - Google Patents

Abstract

A headlight control device is disposed in a vehicle (100, 100a-100d) and controls a headlight (10, 10a-10d) that can change a light irradiated lighting area (110). The headlamp control apparatus includes: a stop determination part (11, S10) that determines whether the vehicle (100, 100a-100d) is stopped; a vehicle approach determining part (11, S12, S13) that determines whether there is an approaching vehicle (210) and that determines a position of the approaching vehicle (210), and a dimming control part (11, S14 , S15) which controls the headlight (10, 10a-10d) to determine the position of the approaching vehicle (210) compared to a surrounding illumination area (110) about that position in the illumination area (110) which the headlight (10, 10a-10d) with light, the headlamp (10, 10a-10d) is maintained in an on state, when it is determined in an on state of the headlamp (10, 10a-10d) that the vehicle (100 , 100a-100d) and that there is the approaching vehicle (210).

Description

REFERENCE TO RELATED APPLICATIONS

This application is based on the Japanese Patent Application No. 2014-23755 of 10 February 2014 and the Japanese Patent Application No. 2015-14554 of January 28, 2015, the disclosures of which are incorporated herein by reference.

TECHNICAL AREA

The present disclosure relates to a headlamp control device that controls a head lamp disposed in a vehicle.

STATE OF THE ART

There is conventionally disclosed an obstacle warning device in Patent Document 1 as an example of a headlamp control apparatus which controls a headlamp.

When this obstacle warning device detects the presence of an obstacle crossing in front of a vehicle from a side of a walkway to a centerline of a road while the vehicle is stopped or parked, the obstacle warning device turns off a headlight even at night to a difficulty in detecting presence prevent the crossing obstacle for a vehicle on the oncoming lane by backlit or blind.

DOCUMENT OF THE STATE OF THE ART

PATENT

• Patent document 1: JP4639564B2

If the headlamp is off while the vehicle is parked or parked, it may be more difficult for a driver to detect the situation around the vehicle before starting the vehicle than when the headlamp is on. Therefore, if the obstacle warning device turns off the headlight at night when the vehicle stops, it may be difficult for the driver to check the situation around the vehicle.

BRIEF EXPLANATION OF THE INVENTION

The present disclosure addresses the problems discussed above. Therefore, it is an object of the present disclosure to provide a headlamp control apparatus that restricts the difficulty in recognizing an obstacle such as a pedestrian in front of an own vehicle by a driver of an approaching vehicle, and confirms a situation around the own vehicle by one Driver of the own vehicle relieved, while the own vehicle stops.

In order to achieve the above-described object of the present disclosure, a headlamp control apparatus according to one aspect of the present disclosure is adapted to be disposed in a vehicle for controlling a pig-thrower capable of changing a light irradiation area. The headlamp control apparatus includes: a stop determination part that determines whether the vehicle is stopping; a vehicle approaching determining part that determines whether an approaching vehicle exists and a position of the approaching vehicle; and a dimming control part that controls the headlamp so as to dimming the position of the approaching vehicle when compared with an ambient lighting area around that position in the illumination area that the headlamp can irradiate, while maintaining the headlamp in an on-state it is determined that the vehicle is holding, and that the approaching vehicle is in a switched-on state or lighting range of the headlight.

As described above, the headlamp control apparatus maintains the headlamp in the on-state when the vehicle is stopped and the approaching vehicle is detected, and accordingly can confirm a situation about the own vehicle by a driver of the own vehicle in comparison with turning off or dimming Make it easier to lower the headlamp in the entire illuminated area while your own vehicle is stopped.

In addition, the headlamp control device hides the position of the approaching vehicle from this position as compared to a surrounding illuminated area when the vehicle stops and the approaching vehicle is detected, and accordingly can restrict a driver of the approaching vehicle from being dazzled. Consequently, the headlamp control apparatus can restrict the problem of detection of an obstacle such as a pedestrian in front of the own vehicle by the driver of the approaching vehicle.

BRIEF EXPLANATION OF THE FIGURES

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings. In the figures show:

1 12 is a block diagram illustrating a general structure of a vehicle including a headlamp control part according to an embodiment;

2 a flowchart illustrating a processing operation of the headlamp control part of the embodiment;

3 Fig. 10 is a pictorial diagram illustrating a first example of irradiation by a headlamp controlled by the headlamp control part of the embodiment;

4 Fig. 10 is a pictorial diagram illustrating a second example of irradiation by a headlamp controlled by the headlamp control part of the embodiment;

5 Fig. 10 is a pictorial diagram illustrating a third example of irradiation by a headlamp controlled by the headlamp control part of the embodiment;

6 Fig. 10 is a pictorial diagram illustrating a fourth example of irradiation by the headlamp controlled by the headlamp control part of the embodiment;

7 Fig. 10 is a pictorial diagram illustrating a fifth example of the irradiation of the headlamp controlled by the headlamp control part of the embodiment;

8th Fig. 10 is a pictorial diagram illustrating an example of the irradiation of a headlamp controlled by a headlamp control part after a first modification;

9 a pictorial diagram illustrating an example of the irradiation of a headlamp, which is controlled by a headlamp control part after a second modification;

10 a flowchart illustrating a processing operation of a headlamp control part according to a third modification;

11 a flowchart illustrating a processing operation of a headlight control part according to a fourth modification;

12 a time chart illustrating the processing flow of the headlamp control part of the fourth modification;

13 a flowchart illustrating a processing operation of a headlight control part according to a fifth embodiment;

14 Fig. 12 is a time chart illustrating the processing operation of the headrest control part of the fifth modification;

15 12 is a block diagram illustrating a general configuration of a vehicle including a headlamp control part according to a sixth modification;

16 12 is a block diagram illustrating a general configuration of a vehicle including a headlamp control part according to a seventh modification;

17 12 is a block diagram illustrating a general configuration of a vehicle including a headlamp control part after an eighth modification;

18 a flowchart illustrating a processing operation of the headrest control part of the eighth modification;

19 Fig. 10 is a pictorial diagram illustrating an example of the irradiation of a headlamp controlled by the headlamp control part of the eighth modification;

20 a pictorial diagram illustrating a warning mark after a ninth modification;

21 a pictorial diagram illustrating a warning mark after a tenth modification;

22 a pictorial diagram illustrating a warning mark after an eleventh modification;

23 a flowchart illustrating a processing operation of a headrest control part of a twelfth modification;

24 a pictorial diagram illustrating an example of the radiation of a headlamp after a thirteenth modification;

25 a pictorial diagram after a predetermined time since the date of 24 has passed;

26 a pictorial diagram illustrating an example of the illumination by a headlight after a fourteenth modification; and

27 a block diagram illustrating a general structure of a vehicle with a headlamp control part according to a fifteenth modification.

EMBODIMENTS FOR CARRYING OUT THE INVENTION

An embodiment will now be described with reference to the accompanying drawings. In each example, a part corresponding to that described in the previous example may be given the same reference numerals to avoid repeated description. In the case of describing only a part of the structure in each example, a construction in another example explained before this example may be referred to and used for the rest of the construction.

In the present embodiment, the present disclosure is for a vehicle 100 used. As in 1 illustrated includes the vehicle 100 a headlight 10 , a vehicle speed sensor 30 , a headlight ON switch 40 and a part 50 for detecting approaching vehicles. The headlight 10 includes a headlamp control section 11 , a left light source 12 and a right light source 13 , This headlight 10 is arranged on a vehicle front side to a direction of travel of the vehicle 100 for example, during the journey of the vehicle at night to illuminate. This headlight 10 is configured to be capable of changing an irradiation area of light from the left side light source 12 and the right side light source 13 is sent out. The headlight 10 can also be referred to as a front light. The left-side light source 12 and the right-side light source 13 can as light sources 12 . 13 described when they need not be specially distinguished. The vehicle 100 can as a separate vehicle 100 to distinguish it from another vehicle in the description below.

The headlight control part 11 may correspond to a "headlight control device". The headlight control part 11 is an electronic control unit including, for example, a processing section, a storage section and input / output sections. The headlight control part 11 is electric with the light sources 12 . 13 connected via the input / output sections. Signals are sent to these light sources 12 . 13 delivered via the input / output sections. The headlight control part 11 is electrical with the vehicle speed sensor 30 , the headlight ON switch 40 and the part 50 for detecting approaching vehicles via the input / output section and a connection wire 20 and signals output from these units are read into the input / output section. By using, for example, a signal obtained from the processing section via the input / output section and data stored in the memory section, the headlight control section performs 11 signal processing (that is, arithmetic processing) on the basis of a program previously stored in memory section. The headlight control part 11 performs different controls in this way.

The headlight control part 11 controls the headlight 10 and is designed to be able to control the distribution of light from the light sources 12 . 13 is sent out. More specifically, the headlight control part 11 the headlight 10 so that control an area with that of the light sources 12 . 13 emitted light is irradiated, and an area that is not irradiated with the light is formed in the entire illuminated area, in which the radiation of the light sources 12 . 13 emitted light is possible. A processing operation of the headlight control part 11 , that is, a control of the headlight 10 through the headlight control section 11 , will be described later. The headlight control part 11 can each be separated for the left-side light source 12 and the right-side light source 13 be provided.

The light coming from the light sources 12 . 13 can be sent out as light from the spotlight 10 be designated. Similarly, the entire illuminated area in which the radiation of light is possible, that of the light sources 12 . 13 is emitted, referred to as a radiation area, the headlight 10 can be irradiated with light.

Both the left-side light source 12 as well as the right-sided light source 13 is constructed by an arrangement of light emitting diodes (hereinafter referred to as LEDs). Thus, the left side light source 12 also as a left side LED array 12 be designated, and the right-side light source 13 Can be considered a right-sided LED array 13 be designated. The headlight control part 11 switches the respective LEDs in the light sources 12 . 13 individually on or off to control the distribution of light coming from the light sources 12 . 13 is emitted. The LED array is a known art, and therefore its detailed explanation is omitted. For example, a laser diode can also be used as a left-side light source 12 and right side light source 13 be used.

The headlight 10 is constructed so that a lighting condition of light coming from the light sources 12 . 13 is sent out, can be switched between a high-emitting state and a low-emitting state. By switching the respective LEDs on or off in the light sources 12 . 13 can the headlight 10 For example, switch the light emission state between the high-radiating state and the low-radiating state. Both the left-side light source 12 as well as the right-sided light source 13 may include a high-luminance light source to set the light emission state to a high-emitting state, and a low-emission light source to set the light emission state to a low-emission state.

The high beam is directed higher than the deep beam upwards, and the radiation of the high beam is wider than that of the deep beam. In other words, the emission of the high beam is horizontal and goes further than the deep beam. Thus, the high beam may alternatively be referred to as a headlamp for driving. On the other hand, the deep beam is directed further down than the high beam and the radiation of the deep beam is not as far as that of the high beam. Thus, the deep beam may alternatively be referred to as a headlamp for passing or dipped beam.

For example, illustrated 3 a pictorial diagram in front of the own vehicle in the case of the emission of the deep beam and the high beam through the light sources 12 . 13 , Although this is not a section view, in 3 the area covered by the light from the light sources 12 . 13 is illuminated, hatched or dotted to between an area illuminated with light from the light sources 12 . 13 is illuminated, and to distinguish an area that is not light from the light sources 12 . 13 is illuminated. The one with light from the light sources 12 . 13 Illuminated area is also outlined below in figures 3 , as in 4 and 5 , dotted.

The vehicle speed sensor 30 detects a driving speed of the vehicle 100 and outputs a signal indicating its detection result. This vehicle speed sensor 30 is known in the art and therefore its detailed explanation is omitted. The headlight control part 11 may be based on the signal from the vehicle speed sensor 30 determine if the vehicle 100 moves.

The headlight ON switch 40 is a switch to the light sources 12 . 13 to command the switch-on. For example, the headlight-on switch is on 40 an illumination signal off to the light sources 12 . 13 to command to turn on when the switch 40 is in an ON state, and outputs a turn-off signal to the light sources 12 . 13 to command to turn off when the switch 40 is in an OFF state. A switch by an occupant of the vehicle 100 is actuated to output a turn-on signal and a turn-off signal, can be used as a headlight-on switch 40 be used. A switch that outputs a turn-on signal and a turn-off signal based on a detection result of a light sensor that detects the amount of light around the vehicle 100 can also be used as a headlight-on switch 40 be used. An illustration of the light sensor is omitted.

The part 50 For detecting approaching vehicles is a device that is an approaching vehicle 210 detected in front of his own vehicle, and the position of the approaching vehicle 210 , For example, a known camera may be the part 50 used to detect the approaching vehicle. For example, the part captures 50 for detecting the approaching vehicle, whether the approaching vehicle is present or not, and detects the position of the approaching vehicle 210 by pattern recognition using an image obtained from the detection part 50 and a pre-stored template, and gives a signal to the headlight control part 11 off, which indicates a detection result. The part 50 for detecting the approaching vehicle detects the width of the approaching vehicle 210 for example, based on a headlamp, tail lamp or side marker lamp of the approaching vehicle 210 in the picture, that of the capturing part 50 is received, and can send a signal to the headlight control section 11 output that displays this detection result. This width is a width of the approaching vehicle 210 in a state in which it is from the vehicle 100 and, for example, a vehicle width of the approaching vehicle 210 or a total length of the approaching vehicle 210 to be used as this width.

The signals representing the position of the approaching vehicle 210 and the width of the approaching vehicle 210 Show the collection results by the part 50 for detecting the approaching vehicle 210 may be referred to as data of the approaching vehicle. Thus it can be said that the part 50 for detecting the approaching vehicle outputs the signal indicating whether the approaching vehicle 210 or not, and outputs the data of the approaching vehicle as its detection results.

If the vehicle 100 and the approaching vehicle 210 relative to each other, the part can 50 to detect the approaching vehicle, whether the approaching vehicle 210 is present or not, and the position of the approaching vehicle 210 by detecting the relative displacement within a range of detection by the detection part 50 follows. Thus, the part can 50 for detecting the approaching vehicle continuously detect whether the approaching vehicle 210 is present or not, and the position of the approaching vehicle 210 to capture. The headlight control part 11 Accordingly, the position of the approaching vehicle can be continuously 210 recognize, and also, whether the approaching vehicle 210 exists or not.

The headrest control section 11 or the part 50 for detecting the approaching vehicle, a match between the position of the approaching vehicle 210 that from the part 50 is detected for detecting the approaching vehicle, and the positions of the respective LEDs in the light sources 12 . 13 carry out. In other words, the headlight control part 11 or the part 50 for detecting the approaching vehicle, a match between the position of the approaching vehicle 210 that of the part 50 to detect the approaching vehicle, and to detect the position in the area exposed to light from the light sources 12 . 13 is irradiated.

The part 50 for detecting the approaching vehicle may be capable of determining whether a vehicle is parked within a range of detection by the part 50 is located for capture. For example, the part 50 for detecting the approaching vehicle, the determination by a lighting state of a headlamp, a tail lamp or a side marker lamp of a vehicle other than the own vehicle 100 carry out. In this case, the part can 50 for detecting the approaching vehicle a vehicle from the vehicles, which is within a detection range of the part 50 for detection, whose headlamp, tail lamp or the like is in a shut-down state, as a parked vehicle, to view as an approaching vehicle 210 excluded. Thus, the part captures 50 for detecting approaching vehicles, a vehicle whose headlamp, tail lamp or the like is turned on, from the present within a detection range vehicles through the part 50 for detection as the approaching vehicle 210 ,

The part 50 for detecting the approaching vehicle may be able to determine whether the vehicle is within a range of detection by the part 50 is located to capture a preceding vehicle 220 is or not. For example, the part 50 for detecting the approaching vehicle, the determination by a shape of a tail lamp or a shape of a side marker lamp of a vehicle other than the own vehicle 100 carry out. In this case, the part can 50 for detecting the approaching vehicle, the preceding vehicle 220 as one of the vehicles, located in a detection area of the part 50 to capture, as the approaching vehicle 210 exclude.

The approaching vehicle 210 can affect a vehicle that is in front of your own vehicle 100 located in a traffic area on a lateral side of the vehicle 100 in one of the direction of travel of your own vehicle 100 deviating direction. The traffic area may be an approaching lane and a driveway z. B. be in a parking lot. In addition, the approaching vehicle 210 affect a vehicle that is in front of your own vehicle 100 located at an intersection in front of your own vehicle 100 Turn right or left to enter an approaching lane. In other words, the approaching vehicle 210 a vehicle that is directly or diagonally in front of the vehicle 100 located.

The processing operation of the headlight control part 11 is related to 2 described. While the power the headlight control part 11 is fed, the headlight control part begins 11 in the flowchart in 2 illustrated processing per predetermined time unit.

In S10, the headlight control part determines 11 whether the vehicle 100 is stopped or not (stop determination part). Based on a signal from the vehicle speed sensor 30 determines the headlight control part 11 whether the vehicle 100 is stopped or not. If that from the vehicle speed sensor 30 obtained signal reaches a value indicating a predetermined speed, determines the headlamp control part 11 that the vehicle 100 is not paused, and ends in the schedule in 2 illustrated process. If that from the vehicle speed sensor 30 received signal does not reach the value indicating the preset speed, determines the headlamp control section 11 that the vehicle 100 is stopped, and proceeds to S11. The predetermined speed is a threshold to determine if the vehicle 100 is stopped or not, and for example, a value of about 0 to a few kilometers per hour may be used as the predetermined speed. The determination of whether the vehicle 100 is stopped, is not limited to the above-explained method. For example, the present disclosure may vary depending on whether the vehicle is 100 in a driving range or in a non-driving range or idle, determine whether the vehicle 100 is stopped or not.

In S11, the headlight control section determines 11 whether the headlight 10 is turned on or not. In other words, the headlight control part determines 11 whether there is a light emission from the light sources 12 . 13 there or not. Based on a signal from the headlight ON switch 40 determines the headlight control part 11 whether the headlight 10 is turned on or not. When a turn-off signal from the headlight ON switch 40 The headlight control section detects 11 that the headlight 10 is not turned on, and ends in the schedule in 2 illustrated processing. If there is a turn on signal from the headlight ON switch 40 gets the headlight control part detected 11 that the headlight 10 is on, and proceeds to S12. Determining if the headlight 10 is turned on, is not limited to the method explained above. For example, the present disclosure may determine whether the headlight is on the basis of the time or time of day 10 is turned on or not.

In S12, the headlight control section determines 11 whether the approaching vehicle 210 is present or not (part for determining the approaching vehicle). Based on a signal that indicates if it is the approaching vehicle 210 or not, that of the part 50 for outputting the approaching vehicle, the headlight control part determines 11 whether it is the approaching vehicle 210 there or not. If the headlight control part 11 determines that it is the approaching vehicle 210 gives the headlight control part finished 11 in the flowchart in 2 illustrated processing. If the headlight control part 11 determines that it is the approaching vehicle 210 there goes the headlight control section 11 to S13.

In S13 receives the headlight control section 11 the data of the approaching vehicle. The headlight control part 11 obtains a position and a width of the approaching vehicle 210 from the part 50 for detecting the approaching vehicle. On the basis of this data of the approaching vehicle, the headlight control part determines 11 the position of the approaching vehicle 210 (Part for determining the approaching vehicle). In other words, the headlight control part identifies 11 the position of the approaching vehicle 210 , The data of the approaching vehicle includes the signals indicative of the position of the approaching vehicle 210 and the width of the approaching vehicle 210 , Thus, alternatively, it can be said that the headlamp control part 11 the area of the approaching vehicle 210 certainly. In addition, it can alternatively be said that the headlight control part 11 the direction of the approaching vehicle 210 relative to the vehicle 100 certainly.

In S14 sets the headlight control section 11 a dimming direction and a dimming width or a dimming direction and dimming width fixed (dimming control part or dimming control part). The headlight control part 11 Sets the dimming direction and the dimming width to the position of the approaching vehicle 210 compared to the illumination area outside this position fade. For example, distributes the headlight control part 11 the light from the headlight 10 not at the position of the approaching vehicle 210 to the position of the approaching vehicle 210 to dim in relation to the surrounding illuminated area. Thus, the headlight control part controls 11 the light sources 12 . 13 so that the headlight control part 11 Light in a lighted area 110 around the approaching vehicle 210 distributed, but no light at the position of the approaching vehicle 210 distributed. Thus, glare of a driver of the approaching vehicle 210 be limited compared to the case where the position of the approaching vehicle 210 with light from the headlight 10 is illuminated.

In this case, the headlight control part determines 11 on the basis of the detection result in S13, LEDs indicating the position of the approaching vehicle 210 fit under the LEDs in the light sources 12 . 13 , Thus, the headlight control part determines 11 LEDs to be turned off, as the dimming direction and dimming width from the LEDs in the light sources 12 . 13 , In order to maintain the light distribution for the surrounding irradiation region, the headlight control part determines 11 LEDs to turn off, under the LEDs in the light sources 12 . 13 that are turned on.

The distance from the left side light source 12 to the approaching vehicle 210 and the distance from the right-side light source 13 to the approaching vehicle 210 can vary depending on the relative position of the vehicle 100 to the approaching vehicle 210 be different. Therefore, the headlight control part 11 the left side light source 12 and the right-side light source 13 set individually. More specifically, the headlight control part determines 11 LEDs under the LEDs in the left side light source 12 which are to be turned off, and it determines LEDs from the LEDs in the right-side light source 13 to be turned off.

In S15, the headlight control section 11 the light sources 12 . 13 with respect to the dimming direction and the dimming width (dimming control part or dimming control part). The headlight control part 11 points the light sources 12 . 13 to turn off the LEDs set in S14 indicating the dimming direction and the dimming width. Thus, that controls Headlight control part 11 the headlight 10 to the position of the approaching vehicle 210 to remove from the area of the headlight 10 is irradiated with light.

In this way, the headlight control part stops 11 the headlight 10 in a switched-on state, if it determines that the vehicle 100 stopped, and that it is the approaching vehicle 210 when the headlight is switched on 10 gives. In the illuminated area, with light from the spotlight 10 is irradiable, distributes the headlight control section 11 the light from the headlight 10 not at the position of the approaching vehicle 210 , Therefore, the headlight control part controls 11 the headlight 10 to the position of the approaching vehicle 210 compared to the illuminated area to dim or dim this position. Thus, the headlight control part irradiated 11 the position of the approaching vehicle is not with the light from the headlight 10 , In other words, the headlight control part illuminates 11 the direction of the approaching vehicle 210 not with the light from the headlight 10 , Because the headlight control part 11 can continuously detect if it is the approaching vehicle 210 or not, and also the position of the approaching vehicle 210 , the headlight control part can 11 the headlight 10 Control to continuously adjust the position of the approaching vehicle 210 to diminish compared to the surrounding area.

By performing such processing, the headlamp control part can 11 that of the light sources 12 . 13 irradiated area in different modes, which in the 3 to 7 are illustrated. This is done using the example in 3 explained. 3 is a pictorial diagram when pedestrians 310 . 320 in front of the vehicle 100 be it the preceding vehicle 220 on the same lane as the vehicle 100 in front of the vehicle 100 There and it is the approaching vehicle 210 on the oncoming lane there. In this case, the vehicle is stationary 100 , and the headlight 10 is on.

The pedestrian 310 is standing on a sidewalk. The pedestrian 320 crosses the from the vehicle 100 and the approaching vehicle 210 traveled roads, that is, moves in a direction of an arrow x. The approaching vehicle 210 moves in a direction of an arrow y.

In this case, the headlight control section leads 11 in the flowchart in 2 illustrated processing to the light sources 12 . 13 to steer to like in 3 the illuminated area 110 and a dimmed area 120 to build. The headlight control part 11 keeps the headlight 10 in an on state at around the illuminated area 110 to build. In the illuminated area, with light from the spotlight 10 can be lit, the headlight control section distributes 11 the light from the headlight 10 not at the position of the approaching vehicle 210 to the dimmed area 120 to build. If it is the approaching vehicle 210 does not exist, becomes the dimmed area 120 as well as the illuminated area 110 with the light from the headlight 10 illuminated. The dimmed area of the present embodiment may be referred to as an off area.

Now the example in 4 explained. 4 is a pictorial diagram after a predetermined time since the date of 3 has passed. In this case, the vehicle is 100 stopped, and the headlight 10 is on.

In this case, the headlight control section leads 11 the processing out in the schedule in 2 is illustrated to the light sources 12 . 13 to steer to the illuminated area 110 and the dimmed area 120 as in 4 to build. The headlight control part 11 Holds the headlight 10 in an on state, around the illuminated area 110 to build. In the illuminated area, with light from the spotlight 10 is irradiable, distributes the headlight control section 11 the light from the headlight 10 not at the position of the approaching vehicle 210 to the dimmed area 120 to build. In this way, the headlight control part 11 the headlight 10 Control to continuously adjust the position of the approaching vehicle 210 To diminish compared to the surrounding area, by the driving of the approaching vehicle 210 follows.

The example in 5 will be explained. 5 is a pictorial diagram when pedestrians 310 . 330 in front of the vehicle 100 and it is the approaching vehicle 210 in front of the vehicle 100 gives. In this case, the vehicle becomes 100 stopped in front of the intersection, and the headlight 10 is on.

The pedestrian 310 stands on a sidewalk while the pedestrian 330 moved on the crosswalk crossing at the intersection in a direction of an arrow x. The approaching vehicle 210 turns right at the intersection in the direction of arrows t1. In this case, the headlight control section leads 11 the processing out in the schedule in 2 is illustrated to the light sources 12 . 13 to steer to the illuminated area 110 and the dimmed area 120 as in 5 to build.

The example in 6 will be explained. 6 is a pictorial diagram when the pedestrians 310 . 330 in front of the vehicle 100 and it is the approaching vehicle 210 in front of the vehicle 100 gives. In this case, the vehicle becomes 100 stopped in front of the intersection, and the headlight 10 is on.

The pedestrians 310 . 330 are comparable to those of the example in 5 , The approaching vehicle 210 turns left at the intersection in the direction of arrows t2. In this case, the headlight control section leads 11 in the flowchart in 2 illustrated processing to the light sources 12 . 13 to steer to the illuminated area 110 and the dimmed area 120 as in 6 to build.

The example in 7 will be explained. 7 is a pictorial diagram in which the pedestrian 310 in front of the vehicle 100 and it is the approaching vehicle 210 in front of the vehicle 100 gives. This approaching vehicle 210 moves forward in a direction of an arrow y. Alternatively, the approaching vehicle 210 Turn right in the direction of the arrows t3. In this case, the vehicle is 100 stopped in a parking lot, and the headlight 10 is on. There are also parked vehicles 230 in front of the vehicle 100 standing in the parking lot.

In this case, the headlight control section leads 11 the processing out in the schedule in 2 is illustrated to the light sources 12 . 13 to steer to the illuminated area 110 and the dimmed area 120 as in 7 to build. As in 7 Illustrated may be the headlamp control section 11 the light sources 12 . 13 steer to the parked vehicles 230 to be irradiated with light. Thus, the headlight control part 11 the parked vehicle 230 do not consider as an approaching vehicle.

In this way, the headlight control part keeps 11 the headlight 10 in a switched-on state when the vehicle 100 stands and the approaching vehicle 210 is detected. Thus, the headlight control part controls 11 the light sources 12 . 13 to the lighting area 110 to build. Consequently, the headlight control part 11 in comparison with turning off or dimming the lights in the entire lighting area simply a driver of the own vehicle 100 a situation around your own vehicle 100 confirm while owning the vehicle 100 stands, that means, before your own vehicle 100 is started. For example, the headlight control part 11 the pedestrians 310 to 330 with the light from the headlight 10 like in the 3 to 7 illustrated illuminate. Accordingly, the driver visually recognizes the pedestrians 310 to 330 easier than if the pedestrians 310 to 330 not with the light from the headlight 10 be illuminated.

If the vehicle 100 stands and the approaching vehicle 210 is detected, the headlight control part fades 11 the position of the approaching vehicle 210 compared to the lighting area around this position. In other words, the headlight control part controls 11 the light sources 12 . 13 to the dimmed area 120 to build. Consequently, the headlight control part 11 a glare of the driver of the approaching vehicle 210 limit. Thus, the headlight control part 11 Restrict the problem that it is for the driver of the approaching vehicle 210 difficult to detect an obstacle like a pedestrian standing in front of their own vehicle 100 located.

By controlling the light sources 12 . 13 to the dimmed area 120 The headlight control section can make 11 the reflection of light from the headlight 10 on the road surface when the road surface is wet. The headlight control part 11 Accordingly, dazzling of the driver of the approaching vehicle 210 due to the light reflection on the road surface. Thus, in rainy weather, the headlight control part 11 For example, limit the problem that it is for the driver of the approaching vehicle 210 difficult to detect an obstacle like a pedestrian standing in front of their own vehicle 100 located.

The headlight control part 11 controls the headlight 10 (Dimming control part) to the position of the approaching vehicle 210 To dim in the high luminous state or in the deep radiating state compared to the surrounding illumination area. More specifically, the headlight control part 11 the headlight 10 Steer to the dimmed area 120 to form when the headlight 10 is turned on in a low-beam state, or may be the headlight 10 Steer to the dimmed area 120 to form when the headlight 10 is turned on in a high radiant state.

The headlight control part 11 can the headlight 10 control the position of the approaching vehicle 210 To diminish this position in comparison to the illumination area by reducing the amount of light with which the position of the approaching vehicle 210 from the headlight 10 is irradiated (dimming control part). Thus, the headlight control part controls 11 the headlight 10 to the illuminated area 110 to form, and the dimmed area 120 that's darker than that lighting area 110 is and is brighter than when the light comes from the spotlight 10 is not distributed. This amount of illumination for the dimmed area 120 may reach any predetermined value or may reach a variable value appropriate to the brightness of the environment around the vehicle 100 varied.

Consequently, the headlight control part 11 the area around the vehicle 100 broaden the driver's own vehicle 100 before the start of the vehicle 100 easily overlooked, than when the light is not to the position of the approaching vehicle 210 is distributed. Thus, the headlight control part 11 the area covered with light from the spotlight 10 is irradiated, widen in comparison to the case in which the light does not reach the position of the approaching vehicle 210 is distributed.

The headlight control part 11 can be a brightness difference between the lighting area 110 and the dimmed area 120 make it smaller than when the light does not reach the position of the approaching vehicle 210 is distributed. Thus, the headlight control part 11 the light distribution of the headlamp 10 bring it closer to a more natural state than when the light does not reach the position of the approaching vehicle 210 is distributed. The natural state is an irradiation state in which no dimmed area 120 is formed.

The embodiment has been described above. However, the present disclosure is by no means limited to the above-described embodiment and can be variously modified without departing from the scope of the present disclosure. Hereinafter, first to seventh modifications of the above embodiment will be described. The above embodiment and the first to seventh modifications can each be implemented individually, but can also be realized in a suitable combination. The present disclosure is not limited to the combination illustrated in the embodiment, and can be realized by various combinations.

The first modification of the embodiment explained above will be described. A headlight control part 11 the first modification is with reference to 8th explained. In the first modification, an explanation will be made using the same reference numerals as in the embodiment described above to illustrate them. The first modification and the above-explained embodiment are different in the mode of light emission by a headlamp 10 ,

The headlight control part 11 controls the headlight 10 to irradiate a boundary area irradiated with light darker than in the surrounding illuminated area 121 to form on a border to the area where the light does not reach the position of an approaching vehicle 210 is distributed in the lighting area, with light from the headlight 10 (the dimming control part) is irradiated. As in 8th illustrated controls the headlight control section 11 the headlight 10 to the border area 121 in addition to a lighting area 110 and a dimmed area 120 to build. The border area 121 is an area that is darker than the lighting area 110 is and the lighter than the dimmed area 120 is. Thus, the headlight control part controls 11 the headlight 10 to move in a gradual way from the lighting area 110 towards the dimmed area 120 to get dark.

This first modification can also provide a similar effect as the embodiment explained above. Consequently, the headlight control part 11 the area around a vehicle 100 widen the one driver of the vehicle 100 just overlooked before leaving the vehicle 100 starts as if the border area 121 not formed. Thus, the headlight control part 11 the area covered with light from the spotlight 10 is illuminated, widening in comparison to the case where the border area 121 not shaped.

The second modification of the embodiment explained above will be described. A headlight control part 11 The second modification will be made with reference to FIG 9 explained. The second modification will be explained for the purpose of illustration using the same reference numerals as in the above-described embodiment. The second modification and the above embodiment are different in the mode of illumination with light by a headlamp 10 ,

The headlight control part 11 controls the headlight 10 to reduce the amount of light emitted by the headlight 10 gradually in the direction of the position next to a vehicle 100 until approaching an approaching vehicle 210 reduce (dimming control part). More specifically, the headlight control part controls 11 the headlight 10 to form a dimmed area that includes areas having different magnitudes in the direction from the position near the vehicle 100 until approaching the approaching vehicle 210 includes. For example, controls the headlight control part 11 as in 9 illustrates the headlight 10 to a first dimmed area 122 , a second dimmed area 123 , a third dimmed area 124 and a shutdown area 125 as the dimming range from the position near the vehicle 100 to accomplish. The headlight control part 11 controls the darkening of the headlamp 10 in the order of the first dimmed area 122 , the second dimmed area 123 , the third dimmed area 124 and the shutdown area 125 , In other words, the headlight control part reduces 11 the illuminance in this order.

This second modification can also achieve a similar effect as the above-explained embodiment or the first modification. As an example, the present modification uses the four-phase dimmed area. However, the present disclosure may also utilize biphasic, tri-phasic, or five- or more-phasic dimmed areas.

The third modification of the embodiment explained above will be described. A headlight control part 11 The third modification will be with reference to 10 described. The third modification will be explained for the purpose of illustration by using the same reference numerals as in the above-described embodiment. The headlight control part 11 can be the formation of a dimmed area 120 cancel if a vehicle 100 is started when a lighted area 110 and the dimmed area 120 be formed.

If a yes judgment is made in S10, the headlight control section will lead 11 the in the schedule of the 10 illustrated processing.

In S20, the headlight control section determines 11 whether the vehicle 100 is started or not (vehicle start determination part). Based on a signal from a vehicle speed sensor 30 determines the headlight control part 11 whether the stopped vehicle 100 was started or not. If that from the vehicle speed sensor 30 obtained signal does not reach a value indicating a predetermined speed, determines the headlight control part 11 that the vehicle 100 is not started and repeats the determination in S20. If that from the vehicle speed sensor 30 obtained signal has reached the value indicating the predetermined speed, determines the headlight control part 11 that the vehicle 100 is started, and proceeds to S21. The predetermined speed is the same as the value described above at S10.

In S21, the headlight control part determines 11 whether a headlight 10 dimmed or not. The headlight control part 11 determines if the control part the headlight 10 controls or not to the dimmed area 120 to build. In other words, the headlight control part determines 11 whether the headlight 10 is in a state in which the position of an approaching vehicle is dimmed. For example, the headlight control part 11 have a flag indicating whether the process in S15 is executed to determine whether the headlamp 10 dimmed or not. If the headlight control part 11 determines that the headlight 10 dimmed, the control part goes 11 continue to S22. If the headlight control part 11 determines that the headlight 10 is not dimmed, ends the control part 11 the in the schedule of 10 illustrated processing.

In S22 leads the headlight control section 11 an illumination amount increase control by (is a illumination amount increase part). If the headlight control part 11 determines that the headlight 10 is located in a state in which the position of the approaching vehicle 210 is dimmed and that the vehicle 100 is started controls the headlight control section 11 the headlight 10 to the amount of light that indicates the position of the approaching vehicle 210 is lit, the same as in the surrounding illuminated area 110 close. Thus, the headlight control part controls 11 the headlight 10 to the amount of illumination of the dimmed area 120 for light from the headlight 10 equal to the amount of illumination for the illuminated area 110 close.

This third modification can also produce a similar effect as the embodiment explained above. If the vehicle 100 started, the headlight control part 11 the third modification by means of the headlight 10 illuminate in front of the vehicle, without the dimmed area 120 to build.

The headlight control part 11 controls the headlight 10 to the amount of light that indicates the position of the approaching vehicle 210 is illuminated, in both the high-radiating state and the low-radiating state, like those for the surrounding illuminated area 110 to make (is a lighting quantity increase part). More specifically, the headlight control part 11 the headlight 10 Control the amount of illumination for the dimmed area 120 increase when the headlight 10 is turned on in a low-beam state, or may be the headlight 10 Control the amount of illumination for the dimmed area 120 increase when the headlight 10 is turned on in a high radiant state.

The fourth modification of the embodiment explained above will be described. A headlight control part 11 The fourth modification will be described with reference to FIGS 11 and 12 explained. The fourth modification will be explained by way of illustration using the same reference numerals as in the embodiment described above. The fourth modification is a modification in increasing the amount of light with which a dimmed area 120 is irradiated.

If a "yes" judgment is made in S10, the headlamp control section leads 11 in the flowchart in 11 illustrated processing. Because S30 is equal to S20, the explanation of this procedure will be omitted. The headlight control part 11 performs the processing in S31 on the condition that a headlamp 10 is dimmed.

In S31 calculated the headlight control section 11 the illumination increase amount per unit time (illumination amount increase part). In this case, the headlight control part calculates 11 For example, the illumination increase amount per unit time by calculating (normal illumination amount - dimming illumination amount) / a transitional time to the normal illumination amount. The normal illumination size is the amount of light with which an illuminated area 110 to illuminate. The dimming lamp size is the amount of light with which the dimmed area 120 to illuminate. The transitional period up to the normal illumination size is a value which can be determined arbitrarily.

In S32 leads the headlight control section 11 the illumination amount increase control per unit time by (illumination amount increasing part). The headlamp control unit controls the lighting size increase per unit of time calculated in S31 11 the headlight 10 to the amount of light from the headlight 10 increase, with the dimmed area 120 is illuminated.

In S33, the headlight control part determines 11 whether the area is illuminated with the normal amount of illumination or not (is a lighting amount increasing part). The headlight control part determines if the illumination size for the dimmed area 120 the illumination size for the illuminated area 110 has reached or not. If the headlight control part 11 determines that the illumination size for the dimmed area 120 the illumination size for the illuminated area 110 has reached the headlight control part 11 in the flowchart in 11 illustrated processing. If the headlight control part 11 determines that the illumination size for the dimmed area 120 the illumination size for the illuminated area 110 has not reached, the headlight control section returns 11 back to S32. In this way, controls the headlight control part 11 the headlight 10 to temporarily gradually increase the amount of light with which the position of an approaching vehicle 210 to illuminate, as in 12 illustrated the same as those of the surrounding illuminated area 110 close.

This fourth modification can also achieve a similar effect as the above-explained embodiment or the third modification. The headlight control part 11 The third modification gradually illuminates the dimmed area 120 so that the headlight control part 11 an aperture of a driver of the approaching vehicle 210 can restrict.

The fifth modification of the embodiment explained above will be described. A headlight control part 11 The fifth modification will be made with reference to FIGS 13 and 14 explained. The fifth modification will be explained for the purpose of illustration using the same reference numerals as in the above-described embodiment. The fifth modification is a modification of the increase in the amount of light with which a dimmed area 120 is illuminated.

If a "yes" judgment is made in S10, the headlamp control section leads 11 the processing by which in the schedule in 13 is illustrated. Because S40 is similar to S20, the explanation of this operation is omitted. The headlight control part 11 performs the processing in S41 on the condition that the headlight 10 is dimmed.

In S41 calculated the headlight control section 11 the amount of illumination increase per unit distance (illuminance increasing part). In this case, the headlight control part calculates 11 For example, the illumination increase amount per distance unit by calculating (normal illumination amount - dimming illumination amount) / a distance to an approaching vehicle. The distance to the approaching vehicle is a distance from a vehicle 100 to an approaching vehicle 210 ,

In S42 leads the headlight control section 11 the illumination amount increase control per distance unit by (illumination amount increase part). The headlamp control section controls the amount of illumination increase per unit of distance calculated in S41 11 the headlight 10 to the amount of light from the headlight 10 increase, with the dimmed area 120 to illuminate.

In S43, the headlight control section determines 11 Whether the area is illuminated with the normal illumination size or not (is a lighting size increasing part). The headlight control part 11 determines if the lighting size for the dimmed area 120 the illumination size for a lit area 110 has reached or not. When the headlamp control section determines that the illumination size for the dimmed area 120 the illumination size for the illuminated area 110 has reached the headlight control part 11 in the flowchart in 13 illustrated processing. If the headlight control part 11 determines that the illumination size for the dimmed area 120 not the illumination size for the illuminated area 110 has reached, the headlight control part returns 11 back to S42. In this way, controls the headlight control part 11 the headlight 10 to gradually increase the amount of light with which the position of the approaching vehicle 210 to be irradiated, the same as for the surrounding illuminated area 110 in the direction of the position near the vehicle 100 to do that to the approaching vehicle 210 approaching, as in 14 illustrated.

Each point from A to C and the position of the approaching vehicle in 14 indicates an area in which the dimmed area 120 is divided into more than one part, and is an area that starts from the side closer to the vehicle 100 is set, similar to the first dimmed area 122 to the deactivated area 125 in 9 , Therefore, the headlight control section does 11 First, the illumination size or illuminance for the point A, the vehicle 100 is closest, the same in the illuminated area 110 , and then makes the illumination amount for the point B, the vehicle 100 the second closest is the one in the illuminated area 110 , After that makes the headlight control section 11 the illumination size for the point C, the vehicle 100 the third closest is the one in the illuminated area 110 , Finally, the headlight control section does 11 the illumination size for the position of the approaching vehicle 210 the same as in the illuminated area 110 , This fifth modification may also produce a similar effect as the above-explained embodiment or the fourth modification.

The sixth modification of the embodiment explained above will be described. A headlight control part 11 the sixth modification is with reference to 15 described. Here, an explanation will be given of the different aspects from the above explanatory embodiment. For the same parts as in the above-explained embodiment, for example, the same corresponding reference numerals as in the above-explained embodiment are given to omit their explanation. The headlight control part 11a differs from the headlight control section 11 in that it's a headlight 10a controls the position of an approaching vehicle 210 compared to the surrounding illuminated area using a left side mirror part 14 and a right side mirror part 15 dim. The left-side mirror part and the right-side mirror part 15 can as mirror parts 14 . 15 described when they need not be distinguished.

The headlight control part 11a is in a vehicle 100a arranged to the headlight 10a which can change a light irradiated area. The vehicle 100a includes the headlight 10a , light sources 12 . 13 in the spotlight 10a are not limited to LEDs. For example, halogen lamps or metal halide lamps may be used as the light sources 12 . 13 be used.

The headlight 10a includes the mirror parts 14 . 15 , Both the left-side mirror part 14 as well as the right side mirror part 15 obtained by arranging mirrors. Each of the mirror parts 14 . 15 may be referred to as a MEMS mirror or a digital mirror. The mirrors that each of the mirror parts 14 . 15 form, can be referred to as micromirrors. MEMS is an abbreviation for microelectromechanical systems.

Each of the mirrors is configured to be capable of between an ON state and an OFF state to match a signal from the headlight control part 11a switch. Each mirror is built to receive the light from the light sources 12 . 13 is sent out to reflect when in an ON state and to a front of the vehicle 100a radiate. Each mirror is built to that of the light sources 12 . 13 does not emit light to the front of the vehicle 100a when it is in an OFF state.

More specifically, each mirror has an angle different between the ON state and the OFF state. The mirror is in the ON state at an angle to that of the light sources 12 . 13 emitted light to the front of the vehicle 100a is reflected. In contrast, the mirror is in the OFF state at an angle in which that of the light sources 12 . 13 does not emit light to the front of the vehicle 100a is reflected. Thus, the headlight control part gives 11a a signal indicating the mirror parts 14 . 15 with respect to an angle of each mirror to control each mirror to switch between its ON state and OFF state. For these details the mirror parts 14 . 15 For example, consider a digital micro mirror device (DMD) disclosed in Patent Document 1.

The headlight control part 11a individually puts each of the mirrors in an ON state or an OFF state around the headlamp 10a to control to form an area with that of the light sources 12 . 13 emitted light is irradiated, and an area that is not irradiated with the light. More specifically, the headlight control part controls 11a by individually switching on or off each mirror the headlight 10a to the position of the approaching vehicle 210 compared to the illuminated area to fade off this position. This headlight control part 11a can have a similar effect as the headlight control part 11 produce.

The seventh modification of the embodiment explained above will be described. A headlight control part 11b the seventh modification is with reference to 16 explained. Here, an explanation will be given of various aspects different from the above embodiment. For example, the same parts as in the above explanation are given the same reference numerals as in the above embodiment to omit their explanation. The headlight control part 11b differs from the headlight control section 11 in that it's a headlight 10b controls the position of an approaching vehicle 210 compared to the surrounding illuminated area using a left side light shielding plate 16 and a right side light shielding plate 17 dim. The left-side light-shielding plate 16 and the right-side light-shielding plate 17 can as light-shielding plates 16 . 17 described when they need not be specially distinguished.

The headlight control part 11b is in a vehicle 100b arranged to the headlight 10b which can change an area illuminated with light. The vehicle 100b includes the headlight 10b , light sources 12 . 13 in headlights 10b are not limited to LEDs. For example, halogen lamps or metal halide lamps can be used as light sources 12 . 13 be used.

The headlight 10b includes the light shielding plates 16 . 17 , Each of the light shielding plates 16 . 17 includes an actuator that matches a signal from the headlamp control section 11b is operable. Each of the light shielding plates 16 . 17 is designed to be able to switch its open and closed states through the actuator. The light shielding plates 16 . 17 can each be the light coming from the light sources 12 . 13 is sent out, partially shield by their opening and closing states. Consequently, the light shielding plates can 16 . 17 each area of the front of the vehicle 100b that with the light sources 12 . 13 light emitted, change according to their opening and closing states. In other words, the light shielding plates can 16 . 17 each area of the front of the vehicle 100b Change according to their opening degrees, that with that of the light sources 12 . 13 emitted light is illuminated.

The headlight control part 11b outputs signals corresponding to the respective light shielding plates 16 . 17 assign their open and closed states. The headlight control part 11b controls the opening and closing states of the light shielding plates 16 . 17 to the headlight 10b to control to form an area of that of the light sources 12 . 13 emitted light is irradiated, and an area that is not irradiated by the light. More specifically, the headlight control part controls 11b the headlight 10b by controlling the opening and closing states of the light shielding plates 16 . 17 to the position of the approaching vehicle 210 compared to illuminated area to fade off this position. This headlight control part 11b can have a similar effect as the headlight control part 11 achieve.

The present disclosure may control the headlamp to the position of the approaching vehicle 210 compared to the illuminated area around this position in a suitable combination of the light sources 12 . 13 dimming down the LEDs, the mirror parts 14 . 15 with the mirrors and the light shielding plates 16 . 17 include. More specifically, the present disclosure can be achieved by turning on or off the corresponding LEDs in the light sources 12 . 13 and by the ON state and the OFF state of the respective mirrors in the mirror parts 14 . 15 the headlight 10 control the position of the approaching vehicle 210 compared to the illuminated area to fade off this position. By switching the respective LEDs in the light sources on and off 12 . 13 and the opening and closing states of the light shielding plates 16 . 17 For example, the present disclosure may control the headlamp to the position of the approaching vehicle 210 compared to the illuminated area to fade off this position. By the ON state and OFF state of the respective mirrors in the mirror parts 14 . 15 and the opening and closing states of the light shielding plates 16 . 17 For example, the present disclosure may control the headlamp to the position of the approaching vehicle 210 compared to the illuminated area to fade off this position. In addition, the present disclosure may control the headlamp to the position of the approaching vehicle 210 diminish this position by the respective LEDs by the ON state and OFF state of the respective mirrors and by the opening and closing states of the light shielding plates compared to the illuminated area 16 . 17 be switched on and off. Even so, the present disclosure can produce the effect.

The eighth modification of the embodiment explained above will be described. A headlight control part 11c the eighth modification is with reference to the 17 to 19 explained. Here, an explanation will be given of the different aspects from the above-explained embodiment. For the same parts as in the above-explained embodiment, for example, the same corresponding reference numerals or step (S) numbers as in the above-explained embodiment are given to omit their explanation. The eighth modification differs from the embodiment explained above mainly in that the headlamp control part 11c draws a warning mark on the road surface.

As in 17 Illustrated is the headlamp control section 11c in a vehicle 100c arranged. The vehicle 100c includes an obstacle detection part 60 in addition to a headlight 10c , a vehicle speed sensor 30 , a headlight ON switch 40 and a part 50 for detecting an approaching vehicle. Although it has a similar structure as the headlight 10 the headlamp differs 10c from the headlight 10 in control content for the light sources 12 . 13 through the headlight control section 11c , The headlight control part 11c may be a result of detection by the obstacle detecting part 60 receive.

The obstacle detecting part 60 detects if there is an obstacle in front of the vehicle 100c or not. The obstacle detecting part 60 detects, for example, based on a camera signal or a laser radar signal, whether there is an obstacle or not. The obstacle detecting part 60 for example, a pedestrian 320 as an obstacle. The obstacle detecting part 60 For example, it can detect a bicycle as an obstacle. The obstacle detecting part 60 can capture an animal like a dog or a cat as an obstacle. A pedestrian, a bicycle or the like, standing in front of the vehicle 100c can be located at the front of the vehicle 100c pass by and in front of an approaching vehicle 210 devices. Thus, a driver of the approaching vehicle 210 be informed that such an obstacle exists. The method of detecting an obstacle by an obstacle detecting part 60 is known as the prior art and thus its detailed explanation is omitted. The following description uses an example to illustrate that the pedestrian 320 is detected as an obstacle.

The processing operation of the headlight control part 11c is related to 18 described. While the performance of the headlight control section 11c is fed, the headlight control part begins 11c the processing that is in the schedule in 18 is illustrated in each predetermined time unit.

In S16, the headlight control section determines 11c Whether a pedestrian is present or not (obstacle detecting part). Based on the detection result from the obstacle detection part 60 determines the headlight control part 11c whether the pedestrian in front of the vehicle 100c or not. If the headlight control part 11c determines that the pedestrian is not present, the headlight control part returns 11c back to S10. If the headlight control part 11c determines that the pedestrian is present, the headlight control part goes 11c continue to S17.

In S17 sets the headlight control section 11c a drawing direction and a drawing form of a warning mark (drawing part). The headlight control part 11c Sets the drawing direction and the drawing form of the warning mark to the driver of the approaching vehicle 210 to warn that the pedestrian 320 is present. In other words, the headlight control part sets 11c the direction and character shape of the warning marker drawn on the road surface. For example, the headlight control part determines 11c corresponding LEDs from the LEDs in the light sources 12 . 13 to the warning mark in a dimmed area 120 to draw, as in 19 illustrated. Similar to the structure explained above in S14, the headlight control part 11c the left side light source 12 and the right-side light source 13 set individually.

The warning mark serves to alert the driver of the approaching vehicle 210 on the presence of the pedestrian 320 to draw attention. In other words, the warning mark serves to attract the attention of the driver of the approaching vehicle 210 on the walking pedestrian 320 to steer. For this reason, a person mark 131 that has a human form, or an exclamation point 132 as in 19 illustrates how to use the warning mark. However, the warning mark is not limited to these examples. The reference numerals 131 . 132 may be referred to as warning marks below.

In S18, the headlight control unit commands 11c the drawing direction and the drawing form of the warning mark (drawing part). The headlight control part 11c sets the direction and the drawing form of the warning mark 131 . 132 stuck on the road surface. The headlight control part 11c points the light sources 12 . 13 to turn on the LEDs set in S14 to the direction and the drawing form of the warning mark 131 . 132 to arrange. Similar to the above-explained operation in S15, the headlight control part 11c the left side light source 12 and the right-side light source 13 individually. The headlight control part 11c can accordingly the warning mark 131 . 132 , in the 19 is illustrated drawing on the road surface on the basis of the mode of light coming from the headlight 10c is sent out. The headlight control part 11c can the warning mark 131 . 132 turn on or blink. More specifically, the headlight control part 11c the warning mark 131 . 132 turn on continuously or the warning mark 131 . 132 repeatedly switch on and off.

In this way, controls the headlight control part 11c the headlight 10c so that it dimmers in S14, S15, and draws the warning mark 131 or the like on the road surface based on the mode of light from the headlight 10c is sent out when the detection result in S16 shows that a pedestrian is present. Consequently, the headlight control part 11c a similar effect as the headlight control section 11 achieve, and the driver of the approaching vehicle 210 on the presence of the pedestrian 320 to draw attention. In other words, the headlight control part 11c a glare of the driver of the approaching vehicle 210 Restrict and the driver of the approaching vehicle 210 on the presence of the pedestrian 320 to draw attention.

The ninth modification of the embodiment explained above will be described. The warning mark may have a shape such that the driver of the approaching vehicle 210 the warning mark easily recognizes and simply recognizes what the warning mark indicates. A warning mark of the ninth modification has a shape of a triangular frame 133 on, with the like in 21 illustrates a person's icon is surrounded. Thus, the ninth modification facilitates the attention of the driver of the approaching vehicle 210 on the warning mark, and causes the driver of the approaching vehicle 210 , easy to recognize that a pedestrian is present as an obstacle. The ninth modification can achieve a similar effect as the eighth modification.

The tenth modification of the embodiment explained above will be described. The warning mark may have a shape such that the driver of the approaching vehicle 210 the warning mark easily recognizes. A warning mark of the tenth modification has a shape of a triangular frame 134 on, with the like in 21 An exclamation point is outlined. Thus, the tenth modification makes the driver of the approaching vehicle 210 just pay attention to the warning mark. The tenth modification may produce an effect similar to the eighth modification.

The eleventh modification of the embodiment explained above will be described. It may be that the headlight 10c depending on its efficiency can not draw an exact shape. Therefore, the warning mark may have a simple shape. The eleventh modification uses as in 22 illustrates a rectangular mark 135 as the warning mark. In addition, for example, a mark having a round shape or a triangular shape may be used as a warning mark. The eleventh modification may produce an effect similar to the eighth modification.

The twelfth modification of the embodiment explained above will be described. A headlamp control part of the twelfth modification will be described with reference to FIG 23 explained. Here, different aspects are explained compared to the eighth modification. An explanation of the same parts as in the eighth modification will be omitted. The headlamp control part of the twelfth modification will be described below for the purpose of illustration using the same reference numerals 11c as described in the eighth modification.

It is probably more necessary for the driver of an approaching vehicle 210 on a pedestrian 320 to alert you when the distance between the vehicle 100c and the approaching vehicle 210 becomes shorter, and it is not necessary as this distance becomes larger. Thus, a headlight control part changes 11c the mode of a warning sign or a warning mark 131 . 132 matching the distance between the vehicle 100c and the approaching vehicle 210 , The present modification uses an example to illustrate that the distance between the vehicle 100c and the approaching vehicle 210 is divided into three phases, and that the mode of warning marking 131 . 132 is changed in each phase. The distance between the vehicle 100c and the approaching vehicle 210 is divided into three phases: a long distance, a middle distance and a short distance.

The long distance is a distance that does not require the driver of the approaching vehicle 210 about the presence of the pedestrian 320 to inform. The mean distance is a distance at which it is necessary for the driver of the approaching vehicle 210 about the presence of the pedestrian 320 but the degree of urgency can be low. The short distance is a distance at which it is necessary for the driver of the approaching vehicle to be aware of the presence of the pedestrian 320 and the level of urgency can be high.

The headlight control part 11c can change the distance between the vehicle 100c and the approaching vehicle 210 for example, based on a detection result of the part 50 to detect an approaching vehicle. Using a first threshold and a second threshold associated with a predetermined distance, the headlamp control section may 11c Determine if the distance, the mean distance or the short distance is the distance in which the distance between the vehicle 100c and the approaching vehicle 210 is classified. The relationship between the first threshold and the second threshold is expressed as (first threshold)> (second threshold). If the distance between the vehicle 100c and the approaching vehicle 210 exceeds the first threshold, the headlamp control section determines 11c this distance as the big distance. If the distance between the vehicle 100c and the approaching vehicle 210 does not exceed the first threshold, but exceeds the second threshold, the headlamp control section determines 11c this distance as the mean distance. If the distance between the vehicle 100c and the approaching vehicle 210 neither exceeds the first threshold nor the second threshold determines the headlamp control section 11c this distance as short.

In S17, S18, the headlight control section leads 11c in the flowchart in 23 illustrated processing.

In S50 the headlight control part determines 11c whether the position of the approaching vehicle is the long distance. Based on whether the distance between the vehicle 100c and the approaching vehicle 210 reached the first threshold or not, determines the headlight control part 11c whether the approaching vehicle 210 from the vehicle 100c is far away. If the distance between the vehicle 100c and the approaching vehicle 210 reaches the first threshold, determines the headlight control part 11c that the approaching vehicle 210 is far away, and ends in the schedule in 23 illustrated processing. When the position of the approaching vehicle is determined to be far away, the headlight control part returns 11c to S10 in 18 back without the warning mark 131 . 132 to draw.

This is how the headlight control section draws 11c (Drawing part) the warning mark 131 . 132 not if the vehicle 100c and the approaching vehicle 210 separated by a predetermined distance, even if the headlight control part 11c in S16 determines that the pedestrian is present. More specifically, the headlight control section draws 11c the warning mark 131 . 132 not if the position of the approaching vehicle 210 far away, even if the headlight control section 11c a headlight 10c so that it is dimmed and the detection result in S16 shows that the obstacle exists. Thus, the headlight control part 11c the drawing of the warning mark 131 . 132 in a period of time when it is unnecessary.

If the headlight control part 11c in S50 determines that the approaching vehicle 210 not far away is the headlight control section 11c continue to S51. In S51, the headlight control section determines 11c whether the position of the approaching vehicle is the mean distance. Based on the distance between the vehicle 100c and the approaching vehicle 210 reaches the second threshold, determines the headlight control part 11c whether the approaching vehicle 210 the mean distance from the vehicle 100c or not. If the distance between the vehicle 100c and the approaching vehicle 210 reaches the second threshold, determines the headlight control part 11c that the approaching vehicle 210 has the middle distance to move on to S53. If the distance between the vehicle 100c and the approaching vehicle 210 does not reach the second threshold, determines the headlight control part 11c that the approaching vehicle 210 is near to proceed to S52.

In S52 shortens the headlight control section 11c a blinking period of the warning mark. The headlight control part 11c draws the warning mark 131 . 132 in a blinking or flickering manner and shortens the blinking period of the warning mark 131 . 132 , In contrast, the headlight control unit extends 11c in S53 the flashing period of the warning mark. The headlight control part 11c draws the warning mark 131 . 132 in a flashing way and extends the flashing time portion of the warning mark 131 . 132 , Here, "shorten (short)" and "extend (long)" refer to a relative period of time. More specifically, the headlight control section does 11c the blinking period becomes shorter when the distance between the vehicle 100c and the approaching vehicle 210 is small, as if this distance is the mean distance. You can also say that the headlight control part 11c the blinking period of the warning mark 131 . 132 shortens when the distance between the vehicle 100c and the approaching vehicle 210 gets shorter.

The headlight control part 11c can produce a similar effect as the eighth modification. The headlight control part 11c may be the drawing of the warning mark 131 . 132 restrict if it is unnecessary and the warning mark 131 . 132 draw when needed. If the vehicle 100c and the approaching vehicle 210 have a short distance from each other, shortens the headlight control section 11c the blinking period of the warning mark 131 . 132 , and thereby can reliably catch the attention of the driver of the approaching vehicle 210 on the presence of the pedestrian 320 to steer.

The flashing period is not limited to two phases. The headlight control part 11c may be the flashing time portion of the warning mark 131 . 132 in three or more phases to match the distance between the vehicle 100c and the approaching vehicle 210 to change. For example, the headlight control part 11c the blinking period of the warning mark 131 . 132 gradually decrease when the distance between the vehicle 100c and the approaching vehicle 210 shortened.

The thirteenth modification of the embodiment explained above will be described. A headlamp control part of the thirteenth modification will be described with reference to FIGS 24 and 25 described. 24 is a pictorial diagram when the warning mark is drawn. 25 is a pictorial diagram when the warning mark is drawn and after a preset time since the time of the 24 has passed.

The headlight control part (drawing part) of the thirteenth modification draws a warning mark 131 . 132 so that the size of the warning mark 131 . 132 from an approaching vehicle 210 is constant and the direction of the warning mark 131 . 132 is constant. More specifically, the headlight control part (drawing part) of the thirteenth modification draws the warning mark 131 . 132 with the shape of the warning mark 131 . 132 that matches the distance between the vehicle 100c and the approaching vehicle 210 changes. In this case, the warning marks change 131 . 132 as in 24 and 25 illustrated when seen from above. Thus, the warning marks appear 131 . 132 for the driver of the approaching vehicle 210 consistently the same size and in the same direction. The constant direction of the warning mark 131 . 132 means a state in which, for example, a person mark 131 or an exclamation point 132 constant to the approaching vehicle 210 is aligned. In other words, the constant direction of the warning mark 131 . 132 be renamed as a state in which the between the person pictogram 131 or the exclamation mark 132 in the straight line along the direction of travel of the approaching vehicle 210 generated angle is always constant.

The headlamp control section of the thirteenth modification may draw the warning mark such that only either the size or the direction of the warning mark is constant. More specifically, the headlamp control part of the thirteenth modification can be the warning mark 131 . 132 Draw, taking the form of the warning mark 131 . 132 matching the distance between the vehicle 100c and the approaching vehicle 210 is changed so that the approaching vehicle 210 seen direction of the warning mark 131 . 132 changes, but their size is constant. The headlight control section of the thirteenth modification may be the warning mark 131 . 132 with the shape of the warning mark 131 . 132 Draw, which fits the distance between the vehicle 100c and the approaching vehicle 210 so that changes the size of the warning mark 131 . 132 from the approaching vehicle 210 Her direction changes, but her direction is constant. This headlight control part of the thirteenth modification may have a similar effect as the headlight control part 11c achieve.

The fourteenth modification of the embodiment explained above will be described. A headlamp control part of the fourteenth modification will be described with reference to FIG 26 described. As in 26 illustrated, the headlamp control part of the fourteenth modification draws a warning mark 136 not in a dimmed area 120 but in a lighting area 110 , The headlamp control section of the fourteenth modification draws the warning mark 136 by partially dimming or turning off the area within the illuminated area 110 , An exclamation mark is used as an example of the warning mark 136 used but the warning mark 136 is not limited to this example. The fourteenth modification may use a warning mark having the shapes described in the above-mentioned modifications. The headlight control part of the fourteenth modification may be the warning mark 136 flash. In addition, the headlamp control part of the fourteenth modification can be the warning mark 136 over the dimmed area 120 and the illuminated area 110 to draw. This headlight control part of the fourteenth modification can have a similar effect as the headlight control part 11c achieve.

The fifteenth modification of the embodiment explained above will be described. A headlight control part 11d the fifteenth modification is with reference to 27 explained. Here, only an explanation of different aspects from the sixth and eighth modifications will be given. For example, the same reference numerals are used for the same parts as in the sixth and eighth modifications to omit their explanation. The fifteenth modification differs mainly in that the headlight control part 11d a warning mark on the road surface through a left-side mirror part 14 and a right-sided mirror part 15 records.

As in 27 Illustrated is the headlamp control section 11d in a vehicle 100d arranged. The vehicle 100d includes an obstacle detection part 60 in addition to a headlight 10d , a vehicle speed sensor 30 , a headlight on switch 40 and a part 50 for detecting an approaching vehicle. Although he has a similar structure as the headlight 10a the headlamp differs 10d from the headlight 10a in the control content for the left-side mirror part 14 and the right side mirror part 15 through the headlight control section 11d , The headlight control part 11d may be a result of the detection by the obstacle detecting part 60 receive. The headlight control part 11d draws a warning mark 131 . 132 or the like by controlling the left-side mirror part 14 and the right side mirror part 15 , The headlight control part 11d can have a similar effect as the headlight control part 11c achieve.

While the present disclosure has been described with reference to embodiments thereof, it is to be understood that the disclosure is not limited to the embodiments and configurations. It is intended that the present disclosure cover various modifications and equivalent arrangements. In addition, other combinations and configurations that include more, less, or only a single element, in addition to the various combinations and configurations, are also included within the spirit and scope of the present disclosure.

Claims (17)

Headlight control device adapted to operate in a vehicle ( 100 . 100a to 100d ) for controlling a headlamp ( 10 . 10a to 10d ), which is capable of illuminating a light irradiated area ( 110 ), the headlamp control apparatus comprising: a stop determination part ( 11 , S10) that determines whether the vehicle ( 100 . 100a to 100d ) is stopped; a part ( 11 , S12, S13) for determining an approaching vehicle that determines whether it is an approaching vehicle ( 210 ), and that one position of the approaching vehicle ( 210 ) certainly; and a dimming control part ( 11 , S14, S15), the headlight ( 10 . 10a to 10d ) controls the position of the approaching vehicle ( 210 ) compared to a surrounding lighting area ( 110 ) around this position in the lighting area ( 110 ), the headlight ( 10 . 10a to 10d ) can be irradiated with light, fade off, the headlight ( 10 . 10a to 10d ) is maintained in an on state, when in a switched-on state of the headlamp ( 10 . 10a - 10d ) it is determined that the vehicle ( 100 . 100a to 100d ) and that it is the approaching vehicle ( 210 ) gives. A headlamp control device according to claim 1, wherein the dimming control part ( 11 , S14, S15) the headlight ( 10 ) controls the position of the approaching vehicle ( 210 ) compared to the surrounding illumination area ( 110 ) to diminish this position by no light from the headlamp ( 10 ) to the position of the approaching vehicle ( 210 ) is radiated. A headlamp control device according to claim 2, wherein the dimming control part ( 11 , S14, S15) the headlight ( 10 ) controls so that it is at a boundary to an area where the light does not reach the position of the approaching vehicle ( 210 ) in the lighting area ( 110 ), the headlight ( 10 ) can irradiate with light, a border area ( 121 ), which is irradiated with light whose thickness is smaller than in the surrounding illumination area ( 110 ). A headlamp control device according to claim 1, wherein the dimming control part ( 11 . S14, S15) the headlight ( 10 ) controls the position of the approaching vehicle ( 210 ) compared to the surrounding illumination area ( 110 ) by reducing the amount of light with which the position of the approaching vehicle ( 210 ) from the headlight ( 10 ) is irradiated. A headlight control device according to any one of claims 1 to 4, wherein the dimming control part ( 11 , S14, S15) the headlight ( 10 ) to control a light emission quantity from the headlight ( 10 ) in a direction from the surroundings of the vehicle ( 100 ) near the approaching vehicle ( 210 ) gradually decrease. A headlamp control apparatus according to any one of claims 1 to 5, further comprising: a vehicle start determination part (16); 11 , S20, S30, S40) that determines whether the stopped vehicle ( 100 ) is started; and a part ( 11 , S22, S32, S42) for increasing the amount of illumination that illuminates the headlight ( 10 ) controls an amount of light with which the position of the approaching vehicle ( 210 ), as well as the surrounding lighting area ( 110 ), if it is determined that the headlight ( 10 ) is in a state in which the position of the approaching vehicle ( 210 ) is dimmed, and that the vehicle ( 100 ) is started. A headlight control device according to claim 6, wherein the part ( 11 , S32) for increasing the amount of illumination the headlight ( 10 ) to temporarily increase the amount of light at which the position of the approaching vehicle ( 210 ) is irradiated, as in the surrounding illumination area ( 110 ) close. A headlight control device according to claim 6 or 7, wherein the part ( 11 , S42) for increasing the amount of illumination the headlight ( 10 ) controls the amount of light with which the position of the approaching vehicle ( 210 ), in a direction away from the surroundings of the vehicle ( 100 ) until approaching the approaching vehicle ( 210 ) gradually the same as in the surrounding amount of illumination ( 110 ) close. Headlight control device according to one of claims 1 to 8, wherein: the headlight ( 10 ) is configured to be capable of switching between a high-radiating state and a low-radiating state; and the dimming control part ( 11 , S14, S15) the headlight ( 10 ) controls the position of the approaching vehicle ( 210 ) compared to the surrounding illumination area ( 110 ) in each state from the high-radiating state and the low-radiating state abzublenden. A headlamp control device according to any one of claims 6 to 8, wherein: the headlamp ( 10 ) is configured to be capable of switching between a high-radiating state and a low-radiating state; and the part ( 11 , S22) for increasing the amount of illumination the headlight ( 10 ) controls the amount of light with which the position of the approaching vehicle ( 210 ) in each of the high-radiating state and the low-radiating state, the same as in the surrounding illumination region ( 110 ) close. A headlamp control apparatus according to any one of claims 1 to 10, further comprising: an obstacle detecting part (11) 11c , S16), which detects if there is an obstacle in front of the vehicle ( 100c ) gives; and a drawing part ( 11c , S17, S18) based on a mode of light emitted by the headlight ( 10c ), a warning mark ( 131 . 132 ), which the approaching vehicle ( 210 ) informs about the presence of the obstacle, draws on a road surface when the dimming control part ( 11 , S14, S15) the headlight ( 10c ) to turn it off and a result of detection by the obstacle detecting part (FIG. 11c , S16) shows that there is the obstacle. A headlamp control apparatus according to claim 11, wherein said obstacle detecting part (16) 11c , S16) detects whether a pedestrian is present as the obstacle. A headlight control device according to claim 11 or 12, wherein said obstacle detecting part (16) 11c , S16) detects whether a bicycle exists as the obstacle. Headlight control device according to one of claims 11 to 13, wherein the drawing part ( 11c , S17, S18) the warning mark ( 131 . 132 ), although the dimming control part ( 11 , S14, S15) the headlight ( 10 ) and the result of the detection by the obstacle detection part (12) 11c , S16) shows that there is the obstacle if the vehicle ( 100c ) and the approaching vehicle ( 210 ) are separated by a predetermined distance. Headlight control device according to one of claims 11 to 14, wherein, the drawing part ( 11c , S17, S18) the warning mark ( 131 . 132 ) and a blinking period of the warning mark ( 131 . 132 ) makes the distance between the vehicle ( 100c ) and the approaching vehicle ( 210 ) becomes smaller. Headlight control device according to one of claims 11 to 15, wherein the drawing part ( 11c , S17, S18) the warning mark ( 131 . 132 ), wherein a shape of the warning mark ( 131 . 132 ) to a distance between the vehicle ( 100c ) and the approaching vehicle ( 210 ) is changed so that one of the approaching Vehicle ( 210 ) size of the warning mark ( 131 . 132 ) is constant. Headlight control device according to one of claims 11 to 16, wherein the drawing part ( 11c , S17, S18) the warning mark ( 131 . 132 ), wherein a shape of the warning mark ( 131 . 132 ) to a distance between the vehicle ( 100c ) and the approaching vehicle ( 210 ) is changed so that an approaching vehicle ( 210 ) direction of the warning mark ( 131 . 132 ) is constant.

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