JP5637955B2 - Vehicle headlamp control device - Google Patents

Description

  The present invention relates to a vehicle headlamp control device.

Conventionally, for example, in an on state of an automatic auto light switch that permits automatic control of the lighting state of a vehicle headlamp, the headlamp is automatically turned on when the illuminance around the vehicle is less than a predetermined value. A headlight control device that automatically turns off the headlamp when the illuminance around the vehicle exceeds a predetermined value when the headlamp is turned on is known (for example, see Patent Document 1).
In this headlight control device, when automatically turning on the headlamp when the automatic auto light switch is on, the light distribution of the headlamp is basically set to a high beam, and when a vehicle ahead is detected, When the environment around the front is sufficiently bright, it is switched to the low beam. In addition, when the shape of the road on which the vehicle is traveling is a sharp curve or a winding road, switching to a low beam is restricted, so that a high beam is maintained even if the surrounding environment is bright.

JP 2007-112280 A

  However, according to the headlight control device according to the above-described prior art, since the driver's intention is not reflected in the automatic light distribution switching of the headlamp, there is a possibility that the driver may feel uncomfortable. .

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicular headlamp control device that can accurately reflect the driver's intention in the lighting state of the headlamp.

In order to achieve the above object by solving the above-described problems, a vehicle headlamp control device according to claim 1 of the present invention is a headlamp provided in a vehicle (for example, a low-side front in an embodiment). A headlight 20, a high-side headlight 21), and passenger state detection means for detecting the state of the vehicle occupant and outputting a detection result signal (for example, the occupant camera 16 and the startle expression detector in the embodiment) 33) and control means for controlling the lighting state of the headlamp based on the signal output from the occupant state detection means (for example, the lighting control unit 35 in the embodiment), and the occupant The state detection means is arranged in front of the occupant, detects facial expression of the occupant, and determines whether the detected facial expression is a startle expression or not (for example, the startle expression in the embodiment) Detector 33), and the control means includes the headlamp. If the occupant of facial expression by the facial expression determination unit during lamp is determined that the a startle expression increases the brightness of the headlamps.

Furthermore, in the vehicle headlamp control device according to claim 2 of the present invention, the vehicle headlight control device is provided on the steering of the vehicle (for example, the steering handle S in the embodiment) and is operated by an occupant of the vehicle to output a signal. Switch means for outputting (for example, the operation switch 13 in the embodiment), and the control means is configured to turn on the headlamp when the occupant turns on the switch means when the headlamp is turned on. Increase brightness.

Further, the vehicle headlamp control apparatus according to claim 3 of the present invention, prior Symbol rain droplet sensor you output external signal amount of raindrops detected and the detection result of the vehicle (e.g., in the embodiment The raindrop sensor 14) includes a raindrop sensor 14), and the control means increases the brightness of the headlamp when the raindrop sensor detects a rain amount of a predetermined threshold value or more when the headlamp is turned on.

Furthermore , the vehicle headlamp control device according to claim 4 of the present invention detects a pedestrian existing in the forward direction of the vehicle and outputs a detection result signal (for example, implementation) A pedestrian / object detection unit 34), and the control means increases the brightness of the headlamp when the pedestrian detection means detects the pedestrian when the headlamp is turned on. Let

Further, the vehicle headlamp control apparatus according to claim 5 of the present invention, the control means, the headlight during a predetermined time after the output is stopped or when the output stop of the trigger signal that becomes to increase the brightness of After the elapse of time, the brightness of the headlamp is returned to the brightness before the increase.

According to the vehicle headlamp control device of the first aspect of the present invention, when a startle expression of an occupant is detected during driving of the vehicle, for example, the vehicle may contact or collide with an object or a pedestrian. As in some cases, it is determined that a dangerous event is imminent in the forward direction, and the brightness of the headlamp is increased.
Thereby, without giving a sense of incongruity to the occupant of the vehicle, for example, the visibility of the occupant with respect to the outside world in front of the traveling direction, an object existing in the outside world or the pedestrian, or the other vehicle or walking existing in the forward direction of the traveling direction, for example. The presence of the vehicle can be recognized by the person.

Furthermore, according to the vehicle headlamp control device of the second aspect of the present invention, the intention of the vehicle occupant can be accurately reflected in the increase in the brightness of the headlamp, which makes the vehicle occupant feel uncomfortable. Without this, it is possible to increase the visibility of the occupant with respect to the vehicle periphery.
Furthermore, it is possible to accurately recognize the presence of the vehicle while preventing pedestrians outside the vehicle and passengers of other vehicles from being dazzled by the high beam.

Furthermore , according to the vehicle headlamp control device of the third aspect of the present invention, the operation for securing a desired field of view when the front field of view deteriorates during rainy weather without giving a sense of incongruity to the vehicle occupant. Can be performed properly.

Further , according to the vehicle headlamp control device of the fourth aspect of the present invention, the visibility of the occupant to the pedestrian existing in the forward direction of the vehicle is increased without causing the vehicle occupant to feel uncomfortable. And the presence of a vehicle can be recognized to the pedestrian who exists ahead of the advancing direction of a vehicle, preventing the dazzling by a high beam.

Furthermore , according to the vehicle headlamp control apparatus of the fifth aspect of the present invention , the increased headlamp brightness can be appropriately returned to the brightness before the increase according to the intention of the vehicle occupant.
Thereby, excessive power consumption can be prevented, and deterioration of the headlamp can be suppressed.

1 is a configuration diagram of a vehicle headlamp control device according to an embodiment of the present invention. 1 is a configuration diagram of a vehicle headlamp control device according to an embodiment of the present invention. It is a flowchart which shows operation | movement of the vehicle headlamp control apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle headlamp control apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle headlamp control apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle headlamp control apparatus which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the vehicle headlamp control apparatus which concerns on embodiment of this invention.

Hereinafter, a vehicle headlamp control device according to an embodiment of the present invention will be described with reference to the accompanying drawings.
The vehicle headlamp control device 10 according to the present embodiment includes a light switch 11, an illuminance sensor 12, an operation switch 13, a raindrop sensor, as shown in FIGS. 1 and 2A, 2B, for example. 14, wiper switch 15, occupant camera 16, external sensor 17, energization controller 18, battery 19, low-side headlamp 20 and high-side headlamp 21 provided on the left and right of the front of the vehicle. And a control device 22.

  Further, the control device 22 includes, for example, a dashboard display arranged at the upper part of the dashboard of the vehicle, a head-up display that displays the front window of the vehicle as a display screen, and a display screen on the instrument panel of the vehicle. The indicator 23 which consists of a display etc. which are arrange | positioned is connected.

  The light switch 11 is, for example, a switch lever protruding in the vicinity of the steering handle S, and controls each lighting state of the low-side headlamp 20 and the high-side headlamp 21 according to the operation of the vehicle occupant. Various signals (for example, a signal for instructing lighting of the low-side headlamp 20 or the high-side headlamp 21, or the low-side headlamp 20 or the high-side headlamp 21 according to the output of the illuminance sensor 12. A signal for instructing execution of automatic lighting control).

The illuminance sensor 12 detects the illuminance of the external environment of the vehicle and outputs a detection result signal.
The operation switch 13 is, for example, a push switch provided on the steering handle S of the vehicle, and outputs a signal corresponding to a predetermined operation (for example, pressing, pressing operation, ON operation, etc.) of the vehicle occupant.

The raindrop sensor 14 detects the amount of raindrop outside the vehicle due to rainfall or snowfall, and outputs a detection result signal.
The wiper switch 15 is, for example, a switch lever that protrudes in the vicinity of the steering handle S, and outputs various signals that control the operating state of the wiper W according to the operation of the vehicle occupant.

The occupant camera 16 is disposed at least in front of the occupant seated on the vehicle seat, includes the occupant's face in the imaging region as an imaging target, and outputs a face image including the occupant's face obtained by imaging.
The external sensor 17 is configured by, for example, a radar device or an imaging device using electromagnetic waves.
For example, the radar device transmits an electromagnetic wave transmission signal so as to scan a detection target region set in the outside world including at least a region in front of the traveling direction of the vehicle, and the transmission signal is an object outside the vehicle, a pedestrian, or the like. The reflected signal generated by the reflection is received, and a detection signal related to the distance from the radar device to an external object or a pedestrian is generated and output to the control device 22.
Further, for example, the imaging device captures an imaging region set in the outside including at least a region in front of the traveling direction of the vehicle, and outputs an image (front image) obtained by the imaging to the control device 22.

  The energization controller 18 includes, for example, a relay that switches the presence / absence of power supply from the battery 19 to the low-side headlamp 20 and the high-side headlamp 21, and the low-side headlamp 20 and the high-side headlamp 21. And a current controller for controlling the current flowing through the PWM by pulse width modulation, etc., and the low-side headlamp 20 and the high-side headlamp 21 are turned on according to a control signal output from the control device 22. The state (for example, whether or not the lamp is lit and the lighting brightness when the lamp is lit) is controlled.

  The control device 22 includes, for example, an operation detection unit 31, a rain detection unit 32, a startle expression detection unit 33, a pedestrian / object detection unit 34, a lighting control unit 35, and a display control unit 36. Has been.

The operation detection unit 31 outputs a control signal for controlling various in-vehicle devices mounted on the vehicle based on the signal output from the operation switch 13.
For example, when the operation detection unit 31 detects a pressing operation (long pressing operation) for a predetermined time or more with respect to the operation switch 13, a control signal instructing to increase the lighting brightness of the low-side headlamp 20 is given. Output.

The rain detection unit 32 determines whether or not the amount of rainfall due to rain or snow in the outside of the vehicle is greater than or equal to a predetermined threshold based on at least a signal output from the raindrop sensor 14 or a signal output from the wiper switch 15.
Then, according to this determination result, when the amount of rain in the outside of the vehicle is equal to or greater than a predetermined threshold value, a control signal that instructs to increase the lighting brightness of the low-side headlamp 20 is output.

The startle expression detection unit 33 performs image processing such as matching with a predetermined template stored in advance based on the face image output from the occupant camera 16 to determine whether the occupant expression is a startle expression. judge.
Then, according to the determination result, when the passenger's facial expression is a startle facial expression, a control signal that instructs to increase the lighting brightness of the low-side headlamp 20 is output.

The pedestrian / object detection unit 34 determines whether there is a pedestrian or an object ahead in the traveling direction of the vehicle based on the detection signal output from the radar device of the external sensor 17 or the image data output from the imaging device. judge.
Then, according to the determination result, when there is a pedestrian or an object ahead in the traveling direction of the vehicle, a control signal that instructs to increase the lighting brightness of the low-side headlamp 20 is output.
In addition, the pedestrian / object detection unit 34 creates data for displaying a pedestrian or an object existing ahead in the traveling direction of the vehicle on the display screen of the display 23 and outputs the data to the display control unit 36.

The lighting control unit 35 switches the presence or absence of energization from the battery 19 to the low-side headlamp 20 or the high-side headlamp 21.
Further, the lighting control unit 35 determines the current value of the current flowing through each of the low-side headlamp 20 and the high-side headlamp 21 when energizing the low-side headlamp 20 or the high-side headlamp 21 from the battery 19. For example, the energization controller 18 is controlled by a control pulse having a PWM control output duty ratio (for example, an ON ratio with respect to an on / off state of the switching elements constituting the energization controller 18) that satisfies this current value. Control.

  For example, the lighting control unit 35 drives and controls the relay of the energization controller 18 in response to a signal instructed to light the low-side headlamp 20 or the high-side headlamp 21 output from the light switch 11. Whether the low-side headlamp 20 or the high-side headlamp 21 is energized from the battery 19 is switched, and the low-side headlamp 20 or the high-side headlamp 21 is turned on.

  In addition, the lighting control unit 35, for example, from the illuminance sensor 12 in a state where a signal instructing execution of automatic lighting control of the low-side headlamp 20 or the high-side headlamp 21 is output from the light switch 11. When it is detected from the output signal that the illuminance of the outside of the vehicle is less than a predetermined value, whether or not the battery 19 is energized from the low-side headlamp 20 or the high-side headlamp 21 is automatically switched. The low-side headlamp 20 or the high-side headlamp 21 is automatically turned on.

In addition, the lighting control unit 35 is, for example, at least one of the operation detection unit 31, the rainfall detection unit 32, the startle expression detection unit 33, and the pedestrian / object detection unit 34 when the low-side headlamp 20 is turned on. When a control signal instructing to increase the lighting brightness of the low-side headlamp 20 is output from the control signal, a control signal instructing to increase the lighting brightness of the low-side headlamp 20 is output.
For example, the lighting control unit 35 includes a PWM control output duty ratio (for example, the energization controller 18) in a control pulse that is output to control the on / off state of the switching elements that constitute the current controller of the energization controller 18. The current flowing through the low-side headlamp 20 is increased by increasing the ratio of ON to the ON / OFF state of the switching element to be configured.

In addition, for example, the lighting control unit 35 outputs the control signal that triggered the increase in the lighting brightness of the low-side headlamp 20 (for example, the operation detection unit 31, the rain detection unit 32, the startle expression detection unit 33, and When the output of this control signal is stopped from any one of the pedestrian / object detection unit 34), the lighting brightness of the low-side headlamp 20 is increased after a certain time has elapsed since the stop or stop. A control signal instructing to return to the previous lighting brightness is output.
For example, if the control signal instructing to increase the lighting brightness of the low-side headlamp 20 is not output from another output source, the lighting control unit 35 performs switching that constitutes the current controller of the energization controller 18. In the control pulse output for controlling the on / off state of the element, the PWM control output duty ratio is returned to the value before the increase.

  Note that the display control unit 36 displays the pedestrians and objects present in the forward direction of the vehicle on the display screen of the display 23 based on the data output from the pedestrian / object detection unit 34.

  The vehicle headlamp control device 10 according to the present embodiment has the above-described configuration. Next, the operation of the vehicle headlamp control device 10 will be described.

First, in the following, a process for controlling the lighting brightness of the low-side headlamp 20 based on a signal output from the operation switch 13 will be described.
For example, in step S01 shown in FIG. 3, it is determined whether or not the low-side headlamp 20 is in a lighting state.
If this determination is “NO”, the flow proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S 02.

In step S02, it is determined whether or not a pressing operation (long pressing operation) for a predetermined time or more with respect to the operation switch 13 has been detected.
If this determination is “NO”, the flow proceeds to step S 03, and in this step S 03, the current value of the current flowing through the low-side headlamp 20 is set to the normal first current value I 1. move on.
On the other hand, if this determination is “YES”, the flow proceeds to step S 04, in which the current value of the current flowing through the low-side headlamp 20 is set to a second value larger than the normal first current value I 1. The current value is set to I2 (> I1) and the process proceeds to the end.

In step S02 to step S03 shown in FIG. 3 described above, the current value of the current flowing through the low-side headlamp 20 when the execution of the pressing operation (long pressing operation) on the operation switch 13 is stopped is the second value. The current value I2 is returned to the normal first current value I1.
However, the present invention is not limited to this. For example, as shown in FIG. 4, when the determination result in step S02 is “NO”, the process proceeds to step S03A, and execution of the pressing operation (long pressing operation) on the operation switch 13 is stopped. It may be determined whether or not a certain time has passed since the start.

If the determination result of step S03A is “NO”, the process proceeds to the end.
On the other hand, if the determination result in step S03A is “YES”, the process proceeds to step S03, and in this step S03, the current value of the current flowing through the low-side headlamp 20 is set to the normal first current value I1. And go to the end.
As a result, even if the execution of the pressing operation (long pressing operation) on the operation switch 13 is stopped, the second current value I2 is maintained until a predetermined time elapses, and after the predetermined time elapses, the second current value I2 is maintained. To the normal first current value I1.

Next, processing for controlling the lighting brightness of the low-side headlamp 20 based on a signal output from the raindrop sensor 14 or a signal output from the wiper switch 15 will be described below.
For example, in step S11 shown in FIG. 5, it is determined whether or not the low-side headlamp 20 is in a lighting state.
If this determination is “NO”, the flow proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S12.

In step S12, it is determined whether or not a pressing operation (long pressing operation) for a predetermined time or more with respect to the operation switch 13 has been detected.
If this determination is “YES”, the flow proceeds to step S13, in which the current value of the current flowing through the low-side headlamp 20 is set to a second current value that is greater than the normal first current value I1. Set to I2 (> I1) and proceed to the end.
On the other hand, if this determination is “NO”, the flow proceeds to step S14.

In step S14, based on the signal output from the wiper switch 15, it is determined whether or not the wiper W is in operation.
When the determination result is “NO”, the process proceeds to step S15. In this step S15, the current value of the current flowing through the low-side headlamp 20 is set to the normal first current value I1. move on.
On the other hand, if this determination is “YES”, the flow proceeds to step S16.

In step S16, information on the amount of raindrops outside the vehicle due to rainfall or snowfall is acquired based on the signal output from the raindrop sensor 14.
Next, in step S17, it is determined whether or not the amount of rainfall due to rainfall or snowfall in the outside world of the vehicle is greater than or equal to a predetermined threshold.
If this determination is “NO”, the flow proceeds to step S 15 described above.
On the other hand, if this determination is “YES”, the flow proceeds to step S18.

  In step S18, the current value of the current flowing through the low-side headlamp 20 is set to a third current value I3 (I2> I3 ≧ I1) that is equal to or greater than the normal first current value I1 and less than the second current value I2. Set and go to the end.

Next, processing for controlling the lighting brightness of the low-side headlamp 20 based on the face image output from the occupant camera 16 will be described below.
For example, in step S21 shown in FIG. 6, the face image output from the occupant camera 16 is acquired.
Next, in step S22, the expression of the passenger is detected based on the face image.
Next, in step S23, it is determined whether or not the low-side headlamp 20 is lit.
If this determination is “NO”, the flow proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S24.

In step S24, it is determined whether or not a pressing operation (long pressing operation) for a predetermined time or more with respect to the operation switch 13 has been detected.
If this determination is “YES”, the flow proceeds to step S25, where the current value of the current flowing through the low-side headlamp 20 is set to a second current value that is greater than the normal first current value I1. Set to I2 (> I1) and proceed to the end.
On the other hand, if this determination is “NO”, the flow proceeds to step S26.

In step S26, it is determined whether or not the passenger's facial expression is a startling expression.
If this determination is “YES”, the flow proceeds to step S 25 described above.
On the other hand, if this determination is “NO”, the flow proceeds to step S 27, in which the current value of the current flowing through the low-side headlamp 20 is set to the normal first current value I 1, Go to the end.

Next, a process for controlling the lighting brightness of the low-side headlamp 20 based on an image (front image) output from the imaging device of the external sensor 17 will be described below.
For example, in step S31 shown in FIG. 7, an image (front image) output from the imaging device of the external sensor 17 is acquired.
Next, in step S32, a pedestrian existing in the forward direction of the vehicle is detected based on the front image.
Next, in step S33, it is determined whether or not the low-side headlamp 20 is lit.
If this determination is “NO”, the flow proceeds to the end.
On the other hand, if this determination is “YES”, the flow proceeds to step S34.

In step S34, it is determined whether or not a pressing operation (long pressing operation) for a predetermined time or more with respect to the operation switch 13 is detected.
If this determination is “YES”, the flow proceeds to step S 35, and in this step S 35, the current value of the current flowing through the low-side headlamp 20 is a second current value that is greater than the normal first current value I 1. Set to I2 (> I1) and proceed to the end.
On the other hand, if this determination is “NO”, the flow proceeds to step S 36.

In step S36, it is determined whether or not a pedestrian crossing the traveling road is detected in front of the traveling direction of the vehicle.
If this determination is “YES”, the flow proceeds to step S 35 described above.
On the other hand, if this determination is “NO”, the flow proceeds to step S 37, in which the current value of the current flowing through the low-side headlamp 20 is set to the normal first current value I 1. Go to the end.

As described above, according to the vehicle headlamp control device 10 according to the present embodiment, the intention of the vehicle occupant can be accurately reflected in the increase in the lighting brightness of the low-side headlamp 20, and the vehicle The visibility of the occupant with respect to the surroundings of the vehicle can be increased without causing the occupant to feel uncomfortable.
Furthermore, it is possible to accurately recognize the presence of the vehicle while preventing pedestrians outside the vehicle and passengers of other vehicles from being dazzled by the high beam.

Furthermore, according to the intention of the vehicle occupant, the increased lighting brightness of the low-side headlamp 20 can be appropriately returned to the lighting brightness before the increase.
Thereby, excessive power consumption can be prevented and deterioration of the low-side headlamp 20 can be suppressed.

Further, when the forward visibility is deteriorated during rainy weather, the operation for ensuring a desired visibility can be appropriately executed without causing the vehicle occupant to feel uncomfortable.
In addition, if a passenger's startle expression is detected while driving a vehicle, a dangerous event may occur in front of the traveling direction, such as when the vehicle may touch or collide with an external object or pedestrian. Therefore, the lighting brightness of the low-side headlamp 20 is increased.
Thereby, without giving a sense of incongruity to the occupant of the vehicle, for example, it is possible to increase the visibility of the occupant with respect to the outside world in front of the traveling direction, objects existing in the outside world, and pedestrians. And the presence of the vehicle can be recognized by pedestrians.

  Moreover, without giving a sense of incongruity to the occupant of the vehicle, the visibility of the occupant to the pedestrian existing in the forward direction of the vehicle is increased, and the pedestrian existing in the forward direction of the vehicle is used by the high beam. The presence of the vehicle can be recognized while preventing dazzling.

In the vehicle headlamp control device 10 according to the above-described embodiment, the operation switch 13 is provided. However, the operation switch 13 is not limited thereto, and other input operation members such as a rotary dial and a touch pad are provided. May be.
Further, when the operation switch 13 is a dedicated input operation member for increasing the lighting brightness of the low-side headlamp 20, the operation switch 13 is not limited to a pressing operation (long pressing operation) over a predetermined time. You may control the increase in the lighting brightness of the low-side headlamp 20 only according to the presence or absence of input operation.
In addition, the operation switch 13 is not limited to the steering handle S of the vehicle, and may be disposed at other locations such as on the instrument panel.

In the vehicle headlamp control device 10 according to the above-described embodiment, the operation switch 13 and the operation detection unit 31, the raindrop sensor 14 and the rain detection unit 32, the occupant camera 16 and the startle expression detection unit 33, Of the combinations of the external sensor 17 and the pedestrian / object detection unit 34, at least one of the combinations may be provided, and the other combinations may be omitted.
In this case, an increase in the lighting brightness of the low-side headlamp 20 may be controlled in accordance with a control signal output from at least one of the combinations.

  In the vehicle headlamp control device 10 according to the above-described embodiment, the function and illuminance of automatic lighting control for the low-side headlamp 20 or the high-side headlamp 21 indicated by the light switch 11 The sensor 12 may be omitted.

In the vehicle headlamp control device 10 according to the above-described embodiment, the lighting control unit 35 is used.
Is not limited to controlling the increase of the lighting brightness of the low-side headlamp 20 according to the control signal output from each of the detection units 31 to 34, and increases the lighting brightness of the high-side headlamp 21. You may control.

DESCRIPTION OF SYMBOLS 10 Vehicle headlamp control apparatus 13 Operation switch (operation means, switch means)
14 Raindrop sensor (external environment detection means)
15 Wiper switch 16 Crew camera (Crew occupant state detection means)
17 External sensor (external environment detection means)
20 Low headlight (headlight)
21 High-side headlight (headlight)
31 Operation detection part (operation means)
32 Rain detection unit (external environment detection means)
33 startle expression detection unit (occupant state detection means, facial expression determination means)
34 Pedestrian / object detection unit (external environment detection means, pedestrian detection means)
35 Lighting control unit (control means)

Claims (5)

A headlamp provided in the vehicle;
Occupant state detection means for detecting the state of the occupant of the vehicle and outputting a detection result signal;
Control means for controlling the lighting state of the headlamp based on the signal output from the occupant state detection means,
The occupant state detection means is provided in front of the occupant, includes facial expression determination means for detecting the expression of the occupant and determining whether the detected facial expression is a startle expression,
The control means increases the brightness of the headlamp when the facial expression determination means determines that the passenger's facial expression is the startle expression when the headlamp is turned on. Headlight control device. Provided steering on the front Symbol vehicle, comprising a switching means for outputting is a signal operated by an occupant of the vehicle,
The vehicle headlight according to claim 1, wherein the control means increases the brightness of the headlamp when the switch means is turned on by the occupant when the headlamp is turned on. Light control device. Before SL includes a rain droplet sensor you output external signal amount of raindrops detected and the detection result of the vehicle,
2. The vehicle according to claim 1, wherein the control unit increases the brightness of the headlamp when the raindrop sensor detects a rain amount equal to or greater than a predetermined threshold when the headlamp is turned on. Headlight control device. Before SL includes a pedestrian detection means for outputting a signal of detection to the detection result of the pedestrian present ahead in the traveling direction of the vehicle,
It said control means for a vehicle according to claim 1 wherein when the pedestrian is detected by the pedestrian detection means in the time of lighting of the headlamp, characterized in that for increasing the brightness of the headlamps Headlight control device. The control means returns the luminance of the headlamp to the luminance before the increase when the output of the signal that triggers the increase of the luminance of the headlamp is stopped or after a predetermined time has elapsed since the output was stopped. The vehicular headlamp control device according to any one of claims 1 to 4 .

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