JP2020026245A - Lighting fixture for vehicle, system for controlling lighting fixture for vehicle and method for controlling lighting fixture for vehicle - Google Patents

Abstract

To provide a lighting fixture for a vehicle that can suppress deterioration in visibility of own vehicle with respect to a movement destination (visual line direction of own vehicle driver) when own vehicle changes the lane while traveling a straight road, and to provide a system for controlling a lighting fixture for a vehicle and a method for controlling a lighting fixture for a vehicle.SOLUTION: A lighting fixture for a vehicle which is configured to change the distribution of light in a turning direction of own vehicle while own vehicle travels a curve changes the distribution of light in an opposite direction to the turning direction of own vehicle when own vehicle changes the lane.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicular lamp, a vehicular lamp control system, and a vehicular lamp control method, and in particular, when a vehicle changes lanes while traveling on a straight road, the destination of the vehicle (the driver's line of sight) The present invention relates to a vehicle lamp, a control system for a vehicle lamp, and a method for controlling a vehicle lamp, which can suppress a decrease in visibility with respect to a direction.

  Conventionally, in the field of vehicular lamps, from the viewpoint of improving visibility at night when traveling on a curve, there is a vehicular lamp configured to change the light distribution in the turning direction of the vehicle when the vehicle is traveling on a curve. It is known (for example, see Patent Documents 1 and 2). Patent Literature 1 discloses a vehicular lamp that controls an actuator to swivel a lamp unit to the left and right, thereby changing a light distribution in a turning direction of a vehicle. Patent Literature 2 discloses a vehicular lamp that changes a light distribution in a turning direction of a vehicle by a so-called electronic swivel without using an actuator (without swiveling a lamp unit left and right).

JP 2005-7973 A International Publication No. WO 2016/167250

  However, the present inventor has studied and found that in a vehicle lamp configured to change the light distribution in the turning direction of the vehicle when the vehicle is traveling on a curve, the lane changed while the vehicle was traveling on a straight road. In this case, the light distribution changes in the turning direction of the own vehicle as in the case of traveling on a curve, and the light is irradiated on the opposite side to the destination of the own vehicle. It has been found that there is a problem that the property is reduced.

  The present invention has been made in view of the above circumstances, and when the own vehicle changes lanes while traveling on a straight road, the visibility of the destination of the own vehicle (the line of sight of the own vehicle driver) is reduced. It is an object to provide a vehicle lamp, a vehicle lamp control system, and a vehicle lamp control method that can be suppressed.

  In order to achieve the above object, one aspect of the present invention is a vehicle lamp configured to change the light distribution in the turning direction of the vehicle when the vehicle is traveling on a curve. It is a vehicular lamp that changes the light distribution in the direction opposite to the turning direction of the vehicle.

  According to this aspect, there is provided a vehicle lamp capable of suppressing a decrease in visibility with respect to a moving destination of the own vehicle (the direction of the driver's line of sight) when the own vehicle changes lanes while traveling on a straight road. Can be provided.

  This is because the light distribution of the vehicle changes in a direction opposite to the turning direction of the vehicle when the vehicle changes lanes.

  Another aspect of the present invention is a vehicle lamp control system configured to change the light distribution in the turning direction of the vehicle when the vehicle travels on a curve, wherein the lamp unit and the vehicle are traveling. A straight road determination unit that determines whether the road is a straight road, a lane change determination unit that determines whether the vehicle changes lanes, and a lamp unit control unit that controls the lamp unit, The lighting unit control unit is configured to determine that the road on which the vehicle is traveling is determined to be a straight road by the straight road determination unit, and that the vehicle be changed by the lane change determination unit. The lamp unit is controlled so that the light distribution changes in a direction opposite to the turning direction of the lamp.

  According to this aspect, when the vehicle changes lanes while the vehicle is traveling on a straight road, the vehicle lighting device can suppress a decrease in visibility with respect to the destination of the vehicle (the line of sight of the driver of the vehicle). A control system can be provided.

  This is because the lamp unit control unit determines that the road on which the vehicle is traveling is determined to be a straight road by the straight road determination unit and that the own vehicle changes lanes by the lane change determination unit. This is because the lamp unit is controlled so that the light distribution changes in a direction opposite to the turning direction of the lamp.

  In a preferred embodiment of the present invention, a turning condition determining unit that determines whether a turning condition is satisfied, a light distribution change angle calculating unit that calculates a light distribution changing angle when the turning condition is satisfied, A light distribution change angle correction unit that corrects the light distribution change angle calculated by the light change angle calculation unit; and the straight road determination unit determines that the road on which the vehicle is traveling is a straight road, and When the lane change determination unit determines that the vehicle changes lanes, the light distribution change angle correction unit performs the light distribution change so that the light distribution changes in a direction opposite to the turning direction of the vehicle. The light distribution change angle calculated by the angle calculation unit is corrected, and the lamp unit control unit is configured to correct the light distribution change angle after correction by the light distribution change angle correction unit, and to determine the direction opposite to the turning direction of the vehicle. The lighting fixture so that the light distribution changes And controlling the knit.

  In a preferred aspect of the present invention, the light distribution change angle correction unit changes the light distribution to a light distribution change angle calculated by the light distribution change angle calculation unit in a direction opposite to a turning direction of the own vehicle. The light distribution change angle is corrected by multiplying the light distribution change angle by taking into account the correction value considered.

  In a preferred embodiment of the present invention, the correction value decreases as the vehicle speed of the own vehicle increases.

  Further, in the above invention, a preferred embodiment includes an imaging device for imaging the front of the vehicle, and the straight road determination unit detects a white line on a road surface in front of the own vehicle based on an image captured by the imaging device. When the detected white line is a straight line that does not include an intersection in the middle and is not interrupted, it is determined that the road on which the vehicle is traveling is a straight road.

  Further, in the above invention, a preferred aspect further includes a turn signal switch state detecting unit that detects a state of a turn signal switch of the own vehicle, and a vehicle speed sensor that detects a vehicle speed of the own vehicle, wherein the lane change determination unit includes the When the state of the turn signal switch of the own vehicle detected by the turn signal switch state detecting unit is on and the vehicle speed of the own vehicle detected by the vehicle speed sensor exceeds a threshold value, it is determined that the own vehicle changes lanes. It is characterized by.

  Another aspect of the present invention is a vehicle lamp control method configured to change a light distribution in a turning direction of the own vehicle when the own vehicle is traveling on a curve, wherein the own vehicle turns when the lane changes. The light distribution is changed in a direction opposite to the direction.

  According to this aspect, when the vehicle changes lanes while the vehicle is traveling on a straight road, the vehicle lighting device can suppress a decrease in visibility with respect to the destination of the vehicle (the line of sight of the driver of the vehicle). A control method can be provided.

  This is because the light distribution of the vehicle changes in a direction opposite to the turning direction of the vehicle when the vehicle changes lanes.

1 is a schematic configuration diagram of a vehicle lamp control system 10. FIG. It is a flowchart for demonstrating an example of the operation | movement in which the own vehicle V0 is running along a curve. It is a figure showing the situation where self-vehicle V0 is running on a curve. It is a figure showing the situation where self-vehicle V0 is going to move to destination A by changing lanes while traveling on a straight road. It is a flowchart for demonstrating the operation example when the own vehicle V0 changes the lane while driving | running on a straight road. It is a figure showing the situation where self-vehicle V0 is going to move to destination A by changing lanes while traveling on a straight road. It is a flowchart for demonstrating the operation example (modified example) when the own vehicle V0 changes the lane while driving | running on a straight road.

  Hereinafter, a vehicle lamp control system 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the respective drawings, corresponding components are denoted by the same reference numerals, and redundant description will be omitted.

  FIG. 1 is a schematic configuration diagram of a vehicle lamp control system 10.

  As shown in FIG. 1, the vehicle lamp control system 10 includes an imaging device 20, a vehicle speed sensor 30, an angular speed sensor 40, a turn signal switch 50, a lamp unit 60, a control unit 70, and the like. The vehicle lamp control system 10 is mounted on a vehicle such as an automobile. Hereinafter, a vehicle equipped with the vehicle lamp control system 10 is referred to as a host vehicle V0. The lamp unit 60 corresponds to the vehicle lamp of the present invention.

  The imaging device 20, the vehicle speed sensor 30, the angular speed sensor 40, the turn signal switch 50, and the lamp unit 60 are connected to the control unit 70 via an in-vehicle network NW or the like. The imaging device 20, the vehicle speed sensor 30, the angular speed sensor 40, the turn signal switch 50, and the lamp unit 60 communicate with the control unit 70 in accordance with a predetermined protocol via the in-vehicle network NW or the like. The predetermined protocol is, for example, CAN (Controller Area Network).

  Although not shown, the imaging device 20 includes a camera that images the front of the vehicle V0. The camera periodically (for example, 30 fps) captures an image including a white line on a road surface in front of the vehicle V0 using an image sensor such as a CCD sensor or a CMOS sensor. The imaging device 20 is provided, for example, in the cabin of the own vehicle V0, and takes an image of the front of the own vehicle V0 through a windshield.

  The vehicle speed sensor 30 is attached to a predetermined portion of the host vehicle V0 and is used to detect a vehicle speed.

  The angular velocity sensor 40 is attached to a predetermined portion of the host vehicle V0, and is used to detect an angular velocity.

  The turn signal switch 50 includes a right turn switch and a left turn switch. When turning right (for example, changing lanes), the right turn switch is turned on by the driver of the own vehicle. When turning left (for example, changing lanes), the left turn switch is turned on by the driver of the own vehicle.

  The control unit 70 is, for example, an ECU (Electronic Control Unit) including a CPU, a RAM, and a ROM (not shown). When the CPU executes a predetermined program (control program) read from the ROM to the RAM, the control unit 70, as shown in FIG. 1, determines a turning condition determination unit 71, a light distribution change angle calculation unit 72, and a straight road determination. The section 73 functions as a lane change determination section 74, a light distribution change angle correction section 75, a lamp unit control section 76, and a turn signal switch state detection section 77.

  First, a configuration example for performing electronic swiveling will be described.

  The electronic swivel is mainly realized by the turning condition determination unit 71, the light distribution change angle calculation unit 72, the lamp unit control unit 76, and the lamp unit 60.

  The turning condition determination unit 71 determines whether or not the turning condition is satisfied, based on a detection signal from a sensor attached to the own vehicle V0. For example, the turning condition determination unit 71 turns the own vehicle (for example, the road on which the own vehicle is turning) based on a detection signal from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the own vehicle V0. ) Is estimated (calculated), and when the estimated curvature exceeds a threshold value, it is determined that the turning condition is satisfied.

  The light distribution change angle calculation unit 72 calculates a light distribution change angle θ1 (see FIG. 3) based on a detection signal from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the vehicle V0. A dashed line indicated by reference numeral AX in FIG. 3 indicates a reference axis extending in the front-rear direction of the vehicle V0. Hereinafter, it is described as a reference axis AX. The light distribution change angle θ1 is an angle with respect to the reference axis AX, and is “+” when the own vehicle V0 turns right and “−” when the own vehicle V0 turns left.

  The lamp unit control unit 76 distributes light in the turning direction of the vehicle V0 (distribution formed by light emitted from the lamp unit 60) based on the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72. The lighting unit 60 is controlled so that the light pattern (hereinafter referred to as light distribution) changes. More specifically, the lamp unit control unit 76 controls the lamp unit so that a light distribution having a relatively high luminous intensity in the light distribution change angle θ1 direction calculated by the light distribution change angle calculation unit 72 is formed. The unit 60 is controlled.

  The lamp unit 60 irradiates light in a specific angle direction (for example, the light distribution change angle θ1 direction calculated by the light distribution change angle calculation unit 72) under the control of the control unit 70 (the lamp unit control unit 76). Any lamp unit can be used as long as it can form a light distribution with a relatively high luminous intensity, and its configuration may be any.

  The lighting unit 60 is mounted on each of the left and right sides of the front end of the vehicle V0. The lamp unit 60 may be a low beam lamp unit, a high beam lamp unit, a cornering lamp lamp unit, or another lamp unit.

  For example, although not shown, the lamp unit 60 includes a plurality of light sources arranged in a horizontal direction or in a matrix, and a projection lens that projects a light source image of the plurality of light sources (also referred to as a direct projection type). Lamp unit.

  In the lamp unit 60, each light source is assigned an angle direction, and light emitted from each light source and transmitted through the projection lens is emitted in the angle direction assigned to each light source. The luminous intensity in each angular direction can be changed by, for example, adjusting the power applied to each light source. Therefore, according to the lamp unit 60, for example, by adjusting the power applied to the light source to which the light distribution change angle θ1 direction calculated by the light distribution change angle calculation unit 72 is assigned, the light distribution change angle θ1 is adjusted. The luminous intensity of the light emitted from the lamp unit 60 in the direction can be relatively increased.

  Further, the lamp unit 60 may be a lamp unit including, for example, MEMS (Micro Electro Mechanical Systems) that forms light distribution by scanning light, or a lamp unit including a DMD (Digital Mirror Device). Or a lamp unit having another configuration.

  As a direct projection type (also referred to as a direct type) lamp unit having a plurality of light sources arranged in a horizontal direction, for example, a unit described in JP-A-2009-218155 can be used. As a direct projection type (also referred to as a direct type) lamp unit having a plurality of light sources arranged in a matrix, for example, those described in JP-A-2009-218211 and JP-A-2015-39993 are used. Can be. As the lamp unit including the MEMS and the lamp unit including the DMD, for example, those described in JP-A-2017-206094 can be used.

  Next, an example of an operation when the vehicle V0 is traveling on a curve will be described with reference to FIGS.

  FIG. 2 is a flowchart for explaining an example of an operation when the vehicle V0 is traveling on a curve. FIG. 3 is a diagram illustrating a situation in which the host vehicle V0 is traveling on a curve. Hereinafter, a case where the own vehicle V0 is traveling on a right curve (turning right) will be described as an example, but the same applies to a case of traveling on a left curve (turning left).

  First, the turning condition determination unit 71 determines whether or not the turning condition is satisfied based on a detection signal from a sensor attached to the own vehicle V0 (step S10). For example, the turning condition determination unit 71 turns the own vehicle (for example, the road on which the own vehicle is turning) based on a detection signal from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the own vehicle V0. ) Is estimated (calculated), and when the estimated curvature exceeds a threshold value, it is determined that the turning condition is satisfied.

  As a result, when it is determined that the turning condition is satisfied (Step S10: Yes), the light distribution change angle calculation unit 72 performs detection from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the own vehicle V0. The light distribution change angle θ1 (see FIG. 3) is calculated based on the signal (step S12).

  Next, the lamp unit control unit 76 controls the lamp unit 60 based on the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72 so that the light distribution changes in the turning direction of the vehicle V0. (Step S14). Specifically, the lamp unit control unit 76 performs light distribution (for example, low beam light distribution) in which the luminous intensity of light emitted in the light distribution change angle θ1 direction calculated by the light distribution change angle calculation unit 72 is relatively high. The lamp unit 60 is controlled so that a pattern or a high beam light distribution pattern is formed. As a result, a light distribution (for example, a low-beam light distribution pattern or a high-beam light distribution pattern) having relatively high light intensity in the light distribution change angle θ1 direction is formed. When the vehicle V0 is traveling on a straight road, that is, when the turning condition is not satisfied, the light emitted in the direction of the light distribution change angle θ1 (in this case, θ1 = 0), that is, in the reference axis AX direction. A light distribution having a relatively high luminous intensity is formed.

  According to the control from the control unit 70 (the lamp unit control unit 76), the lamp unit 60 distributes light with relatively high luminous intensity in the light distribution change angle θ1 direction calculated by the light distribution change angle calculation unit 72. Form light. Thereby, the visibility at the time of curve driving at night is improved.

  Next, a problem when the vehicle V0 changes lanes while traveling on a straight road will be described with reference to FIG.

  FIG. 4 is a diagram illustrating a situation in which the host vehicle V0 attempts to move to the destination A by changing lanes while traveling on a straight road.

  The present inventor has examined that, in the lamp unit 60 configured to change the light distribution in the turning direction of the own vehicle V0 when the own vehicle V0 is traveling on a curve, as shown in FIG. When the lane is changed while the vehicle is traveling on the road, the light distribution P changes in the turning direction of the vehicle V0 (see the direction indicated by the arrow B in FIG. 4) as in the case of traveling on a curve (see FIG. 3) (light distribution). (A change angle θ1), and the opposite side to the destination A of the own vehicle V0 is irradiated, so that there is a problem that the visibility of the destination of the own vehicle V0 (the line of sight of the own vehicle driver) is reduced. There was found.

  Next, a configuration example for solving this problem will be described.

  As shown in FIG. 1, this problem is mainly solved by the turn signal switch state detection unit 77, the straight road determination unit 73, the lane change determination unit 74, the light distribution change angle correction unit 75, and the lamp unit control unit 76. .

  The turn signal switch state detection unit 77 detects the state of the turn signal switch 50 (the ON / OFF state of the right turn switch and the left turn switch).

  The straight road determination unit 73 determines whether the road on which the vehicle V0 is traveling is a straight road. For example, the straight road determination unit 73 detects a white line on the road surface in front of the own vehicle V0 based on an image captured by the imaging device 20, and the detected white line is a straight line that does not include an intersection in the middle and is not interrupted. In some cases, the straight road determination unit 73 determines that the road on which the vehicle V0 is traveling is a straight road.

  The lane change determination unit 74 determines whether or not the own vehicle V0 changes lanes. For example, the lane change determination unit 74 is based on the on / off state of the turn signal switch 50 (right turn switch or left turn switch) detected by the turn signal switch state detection unit 77 and the vehicle speed of the own vehicle V0 detected by the vehicle speed sensor 30. It is determined whether or not the own vehicle V0 changes lanes. Specifically, the lane change determination unit 74 turns on the state of the turn signal switch 50 (right turn switch or left turn switch) detected by the turn signal switch state detection unit 77, and detects the state of the own vehicle V0 detected by the vehicle speed sensor 30. When the vehicle speed exceeds a threshold value (for example, 30 km), it is determined that the own vehicle V0 changes lanes.

  The light distribution change angle correction unit 75 corrects the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72. For example, the light distribution change angle correction unit 75 corrects the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72 so that the light distribution changes in a direction opposite to the turning direction of the vehicle V0. Specifically, the light distribution change angle correction unit 75 sets the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72 so that the light distribution changes in the direction opposite to the turning direction of the vehicle V0. The light distribution change angle θ1 is corrected by multiplying the corrected correction value −X. The correction value -x is, for example, -1, and is stored in a storage unit such as a ROM of the control unit 70 in advance. Hereinafter, the corrected light distribution change angle θ1 is referred to as a light distribution change angle θ2 (see FIG. 6). Note that the correction value -x may be a fixed value or a variable value that changes depending on the traveling situation. For example, the correction value -x may be a variable value that decreases (or increases) as the vehicle speed of the own vehicle V0 increases.

  The lamp unit control unit 76 controls the lamp unit 60 based on the light distribution change angle θ2 corrected by the light distribution change angle correction unit 75 so that the light distribution changes in the direction opposite to the turning direction of the vehicle V0. I do. Specifically, the lamp unit control unit 76 forms a light distribution having a relatively high light intensity in the direction of the light distribution change angle θ2 (see FIG. 6) corrected by the light distribution change angle correction unit 75. The lighting unit 60 is controlled so as to be operated.

  Next, an operation example when the own vehicle V0 changes lanes while traveling on a straight road will be described with reference to FIGS.

  FIG. 5 is a flowchart for explaining an operation example when the own vehicle V0 changes lanes while traveling on a straight road, and corresponds to FIG. 2 with steps S13A to S13C added. FIG. 6 is a diagram illustrating a situation in which the own vehicle V0 is changing lanes while traveling on a straight road and is about to move to the destination A. Hereinafter, a case where the own vehicle V0 turns right will be described as an example, but the same applies to a case where the own vehicle V0 turns left.

  First, the turning condition determination unit 71 determines whether or not the turning condition is satisfied based on a detection signal from a sensor attached to the own vehicle V0 (step S10). For example, the turning condition determination unit 71 turns the own vehicle (for example, the road on which the own vehicle is turning) based on a detection signal from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the own vehicle V0. ) Is estimated (calculated), and when the estimated curvature exceeds a threshold value, it is determined that the turning condition is satisfied.

  As a result, when it is determined that the turning condition is satisfied (Step S10: Yes), the light distribution change angle calculation unit 72 performs detection from a sensor (for example, the vehicle speed sensor 30 or the angular speed sensor 40) attached to the own vehicle V0. The light distribution change angle θ1 (see FIG. 6) is calculated based on the signal (step S12).

  Next, the straight road determination unit 73 determines whether the road on which the vehicle V0 is traveling is a straight road (step S13A). For example, the straight road determination unit 73 detects a white line L on a road surface in front of the own vehicle V0 based on an image captured by the imaging device 20, and the detected white line L does not include an intersection in the middle and is not interrupted. When the vehicle is straight, the straight road determination unit 73 determines that the road on which the vehicle V0 is traveling is a straight road.

  As a result, when it is determined that the road on which the vehicle V0 is traveling is a straight road (step S13A: Yes), the lane change determination unit 74 determines whether the vehicle V0 changes lanes (step S13A: Yes). Step S13B). For example, the lane change determination unit 74 determines that the state of the turn signal switch 50 (right turn switch or left turn switch) detected by the turn signal switch state detection unit 77 is on, and the vehicle speed of the own vehicle V0 detected by the vehicle speed sensor 30 is a threshold. If the distance exceeds (for example, 30 km), it is determined that the own vehicle V0 changes lanes.

  As a result, when it is determined that the vehicle V0 changes lanes (step S13B: Yes), the light distribution change angle correction unit 75 corrects the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72. (Step S13C). For example, the light distribution change angle correction unit 75 causes the light distribution change angle calculation unit 72 to change the light distribution in a direction opposite to the turning direction of the vehicle V0 (see the direction indicated by the arrow C in FIG. 6). The calculated light distribution change angle θ1 is corrected. Specifically, the light distribution change angle correction unit 75 sets the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72 so that the light distribution changes in the direction opposite to the turning direction of the vehicle V0. The light distribution change angle θ1 is corrected by multiplying the considered correction value −X (for example, −1). For example, if the light distribution change angle θ1 calculated by the light distribution change angle calculation unit 72 is +5 degrees, the corrected light distribution change angle θ2 is + 5 × (−X) = − 5 degrees.

  Next, based on the light distribution change angle θ2 corrected by the light distribution change angle correction unit 75, the lamp unit control unit 76 reverses the turning direction of the vehicle V0 (the direction indicated by the arrow C in FIG. 6). The lamp unit 60 is controlled so that the light distribution changes (see step S14). Specifically, the lamp unit control unit 76 performs light distribution (for example, low beam light distribution) in which the luminous intensity of light emitted in the light distribution change angle θ2 direction corrected by the light distribution change angle correction unit 75 is relatively high. The lamp unit 60 is controlled so that a pattern or a high beam light distribution pattern is formed.

  According to the control from the control unit 70 (the lamp unit control unit 76), the lamp unit 60 distributes light having a relatively high luminous intensity in the light distribution change angle θ2 direction corrected by the light distribution change angle correction unit 75. Form light. As a result, the light distribution P changes in a direction opposite to the turning direction of the own vehicle V0 (see the direction indicated by arrow C in FIG. 6), and the destination A of the own vehicle V0 is irradiated. A decrease in visibility with respect to the destination (the direction of the driver's line of sight) is suppressed.

  As described above, according to the present embodiment, when the own vehicle V0 changes lanes while traveling on a straight road, the visibility of the own vehicle V0 with respect to the destination (the direction of the line of sight of the own vehicle driver) decreases. A vehicle lamp, a vehicle lamp control system, and a vehicle lamp control method that can be suppressed can be provided.

  This is because the light distribution of the own vehicle V0 is changed in a direction opposite to the turning direction of the own vehicle V0 when changing lanes.

  The control may be any control that changes the light distribution in the direction opposite to the turning direction when the vehicle V0 changes lanes while traveling on a straight road, and is not limited to the control illustrated in FIG. For example, as shown in FIG. 7, the light distribution change angle may be calculated (step S12) after first determining whether or not to multiply by the correction value -X (steps S13A and S13B). FIG. 7 is a flowchart for explaining an operation example (modification) when the own vehicle V0 changes lanes while traveling on a straight road.

  Next, a modified example will be described.

  In the above embodiment, an example in which a lamp unit that changes the light distribution in the turning direction of the vehicle V0 by a so-called electronic swivel without using an actuator (without swiveling the lamp unit left and right) is used as the lamp unit 60. However, the present invention is not limited to this. For example, although not shown, as the lamp unit 60, a lamp unit supported so as to swivel left and right by controlling an actuator may be used.

  According to the present modification, for example, the lamp unit control unit 76 controls the actuator, so that the lamp unit 60 (light distribution) can be controlled in the same manner as in the above embodiment.

  Further, in the above-described embodiment, the example has been described in which the straight road determination unit 73 determines whether or not the road on which the vehicle V0 is traveling is a straight road based on the image captured by the imaging device 20. Not limited to For example, based on a detection signal from a distance measuring sensor such as a millimeter wave / LiDAR, the straight road determination unit 73 determines that the road on which the vehicle V0 is traveling is a straight road (for example, a straight road that does not include an intersection in the middle and does not stop. ) May be determined. In addition, the straight road determination unit 73 determines whether the vehicle V0 runs based on the position of the vehicle V0 detected by the GPS mounted on the vehicle V0 and the map data used by the car navigation device mounted on the vehicle V0. It may be determined whether the middle road is a straight road (for example, a straight road that does not include an intersection in the middle and is not interrupted).

  In the above-described embodiment, the lane change determination unit 74 determines whether the turn signal switch 50 (right turn switch or left turn switch) has been turned on or off by the turn signal switch state detection unit 77, and the vehicle V0 detected by the vehicle speed sensor 30. Although the example in which whether or not the own vehicle V0 changes lanes based on the vehicle speed has been described, the present invention is not limited to this. For example, the straight road determination unit 73 determines whether the vehicle V0 is in the lane based on the position of the vehicle V0 detected by the GPS mounted on the vehicle V0 and the map data used in the car navigation device mounted on the vehicle V0. It may be determined whether or not to make a change.

  Further, in the above-described embodiment, the example in which the turning condition determination unit 71 determines whether or not the turning condition is satisfied based on the detection signals from the vehicle speed sensor 30 and the angular speed sensor 40 has been described. However, the present invention is not limited thereto. For example, the turning condition determination unit 71 may determine whether or not the turning condition is satisfied based on a detection signal from the angle sensor.

  Further, in the above-described embodiment, an example has been described in which the light distribution change angle calculation unit 72 calculates the light distribution change angle θ1 (see FIG. 3) based on detection signals from the vehicle speed sensor 30 and the angular velocity sensor 40. Not limited to this. For example, the light distribution change angle calculation unit 72 may calculate the light distribution change angle θ1 (see FIG. 3) based on the detection signals from the vehicle speed sensor 30 and the angle sensor (not shown).

  Each numerical value shown in each of the above embodiments is merely an example, and it is a matter of course that an appropriate numerical value different from this can be used.

  The above embodiments are merely examples in every respect. The present invention is not construed as being limited by the description of the above embodiments. The present invention may be embodied in various other forms without departing from its spirit or essential characteristics.

  DESCRIPTION OF SYMBOLS 10 ... Control system of vehicle lamps, 20 ... Imaging device, 30 ... Vehicle speed sensor, 40 ... Angular speed sensor, 50 ... Turn signal switch, 60 ... Lamp unit, 70 ... Control part, 71 ... Turning condition determination part, 72 ... Light distribution Change angle calculation unit, 73: straight road determination unit, 74: lane change determination unit, 75: light distribution change angle correction unit, 76: lamp unit control unit, 77: turn signal switch state detection unit

Claims (11)

In a vehicle lamp configured to change the light distribution in the turning direction of the vehicle when the vehicle is traveling on a curve,
A vehicle lamp that changes the light distribution in the direction opposite to the turning direction of the vehicle when the vehicle changes lanes. In a control system of a vehicle lamp configured to change a light distribution in a turning direction of the vehicle when the vehicle travels on a curve,
A lighting unit,
A straight road determination unit that determines whether the road on which the vehicle is traveling is a straight road,
A lane change determination unit that determines whether or not the vehicle changes lanes;
A lamp unit control unit that controls the lamp unit,
The lighting unit control unit is configured to determine that the road on which the vehicle is traveling is determined to be a straight road by the straight road determination unit, and that the vehicle be changed by the lane change determination unit. A control system for a vehicular lamp that controls the lamp unit such that the light distribution changes in a direction opposite to the turning direction of the vehicle. A turning condition determining unit that determines whether a turning condition is satisfied;
If the turning condition is satisfied, a light distribution change angle calculation unit that calculates a light distribution change angle,
A light distribution change angle correction unit that corrects the light distribution change angle calculated by the light distribution change angle calculation unit,
When the road on which the vehicle is traveling is determined to be a straight road by the straight road determination unit, and when the vehicle is determined to perform lane change by the lane change determination unit,
The light distribution change angle correction unit corrects the light distribution change angle calculated by the light distribution change angle calculation unit so that the light distribution changes in a direction opposite to the turning direction of the vehicle,
The lamp unit control unit controls the lamp unit based on the light distribution change angle corrected by the light distribution change angle correction unit so that the light distribution changes in a direction opposite to a turning direction of the vehicle. Item 3. A control system for a vehicle lamp according to item 2.   The light distribution change angle correction unit multiplies the light distribution change angle calculated by the light distribution change angle calculation unit by a correction value considered so that the light distribution changes in a direction opposite to the turning direction of the vehicle. The vehicle lighting control system according to claim 3, wherein the light distribution change angle is corrected.   The vehicle lamp control system according to claim 4, wherein the correction value decreases as the vehicle speed of the vehicle increases. An imaging device for imaging the front of the vehicle,
The straight road determination unit, based on the image captured by the imaging device, detects a white line on the road surface ahead of the vehicle, if the detected white line is a straight line that does not include an intersection in the middle, The control system for a vehicular lamp according to any one of claims 2 to 5, wherein it is determined that the road on which the vehicle is traveling is a straight road. A turn signal switch state detecting unit that detects a state of the turn signal switch of the own vehicle,
A vehicle speed sensor for detecting a vehicle speed of the own vehicle;
The lane change determination unit is configured such that when the state of the turn signal switch of the own vehicle detected by the turn signal switch state detection unit is on and the vehicle speed of the own vehicle detected by the vehicle speed sensor exceeds a threshold value, The control system for a vehicle lamp according to any one of claims 2 to 6, wherein it is determined that a lane change is performed.   The control system for a vehicle lamp according to any one of claims 2 to 7, wherein the lamp unit is a lamp unit including a plurality of light sources arranged in a horizontal direction or in a matrix.   The control of the vehicle lamp according to any one of claims 2 to 7, wherein the lamp unit is a lamp unit that forms a light distribution by scanning light or a lamp unit including a DMD (Digital Mirror Device). system. The lamp unit is a lamp unit supported to swivel left and right by controlling an actuator,
The control system for a vehicle lamp according to any one of claims 2 to 7, wherein the lamp unit control unit controls the lamp unit by controlling the actuator. In a control method of a vehicle lamp configured to change a light distribution in a turning direction of the own vehicle when the own vehicle travels on a curve,
A control method of a vehicle lamp for changing a light distribution in a direction opposite to a turning direction of a vehicle when the vehicle changes lanes.

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