JP2022002932A - Headlamp for vehicle - Google Patents

Abstract

To provide a headlamp for a vehicle which can suppress reduction in visibility of a driver.SOLUTION: A headlamp 20 for a vehicle includes a light-emitting unit 30, and a control part 50. When any one of turn lamps 153 flickers, the control part 50 controls the light-emitting unit 30 so that a light quantity of at least a part of light forming a region on a side of the flickering turn lamp 153 in a first region 801 and a second region 802 is larger than a light quantity when each of the turn lamps 153 is off.SELECTED DRAWING: Figure 5

Description

The present invention relates to a vehicle headlight.

Conventionally, a light distribution control system for vehicles that controls the light distribution of headlights has been known. Such a vehicle light distribution control system is described in Patent Document 1. The vehicle light distribution control system described in Patent Document 1 includes a pair of left and right headlights, a camera, and a control system for controlling the light distribution of the headlights. Each of the pair of headlights has a main lamp unit that forms a symmetrical basic light distribution pattern in front of the vehicle and a sub-lamp unit that forms an additional light distribution pattern on the side of the vehicle from the basic light distribution pattern. Be prepared. The control unit individually controls each optical output of the sub-lamp unit based on the video data of the camera. This headlight illuminates the required amount of light when and where it is needed.

Japanese Unexamined Patent Publication No. 2013-67343

In the vehicle light distribution control system described in Patent Document 1, if the amount of light forming each of the basic light distribution pattern and the additional light distribution pattern is insufficient, the visibility of the driver may be deteriorated.

Therefore, an object of the present invention is to provide a headlight for a vehicle that can suppress a decrease in visibility of a driver.

In order to solve the above problems, the vehicle headlight of the present invention is either a light emitting unit that emits light forming a predetermined light distribution pattern or a turn lamp located on the right side and the left side in the left-right direction of the vehicle. A control unit that controls the light emitting unit in response to blinking of one of them or turning off each of the turn lamps is provided, and the light distribution pattern is a first region located on the right side in the left-right direction of the vehicle. A second region located on the left side of the vehicle in the left-right direction and a region located between the first region and the second region in the left-right direction of the vehicle, and the left-right direction of the vehicle. The control unit includes, when any one of the turn lamps is blinking, each of the turn lamps includes a third region through which a straight line extending in front of and behind the vehicle passes through the center of the vehicle. Controlling the light emitting unit so that the amount of light of at least a part of the light forming the blinking region on the turn lamp side of the first region and the second region is larger than that of turning off the light. It is a feature.

If either one of the turn lamps is blinking, the vehicle may turn to the blinking turn lamp side and the driver's line of sight is the blinking turn of the first and second areas. Focusing on the area on the ramp side, the driver often pays attention to the area on the turn lamp side that is blinking compared to the area on the third area and the area on the turn lamp side that is off. As described above, when either one of the turn lamps is blinking, the need for brightness in the area on the blinking turn lamp side can be improved as compared with the case of going straight. Therefore, in this vehicle headlight, when one of the turn lamps is blinking, the light forming an area on the turn lamp side which is blinking more than when each of the turn lamps is off. At least a part of the light intensity is high. When the amount of light in the area on the blinking turn lamp side is large, the area on the blinking turn lamp side can be brighter than in the case where the amount of light is not large, and the amount of light in the area on the blinking turn lamp side can be brighter. The shortage can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the area on the side of the blinking turn lamp.

Further, when any one of the turn lamps is blinking, the control unit is at least light that forms a blinking region on the turn lamp side of the first region and the second region. It is preferable to control the light emitting unit so that a part of the light amount is equal to or more than at least a part of the light amount forming the third region.

When the amount of light in the blinking turn lamp side region is equal to or greater than the amount of light in the third region, the blinking turn lamp side region becomes brighter than the third region. When the blinking turn lamp side area becomes brighter than the third area, the driver is on the blinking turn lamp side as compared with the case where the blinking turn lamp side area does not become brighter than the third area. It may be easier to focus on the area of.

Further, the light distribution pattern includes a fourth region located below the first region, a fifth region located below the second region, and a sixth region located below the third region. Further, when any one of the turn lamps is blinking, the control unit is blinking in the fourth region and the fifth region rather than turning off each of the turn lamps. It is preferable to control the light emitting unit so that the amount of light of at least a part of the light forming the region on the turn lamp side is increased.

When either one of the turn lamps is blinking, the driver's line of sight is concentrated on the area on the blinking turn lamp side of the fourth area and the fifth area, and the driver is off the turn. Often, attention is paid to the blinking turn signal area compared to the lamp area. As described above, when either one of the turn lamps is blinking, the need for brightness in the area on the blinking turn lamp side can be improved as compared with the case of going straight. Therefore, in this vehicle headlight, when one of the turn lamps is blinking, the light forming an area on the turn lamp side which is blinking more than when each of the turn lamps is off. At least a part of the light intensity is high. When the amount of light in the area on the blinking turn lamp side is large, the area on the blinking turn lamp side can be brighter than in the case where the amount of light is not large, and the amount of light in the area on the blinking turn lamp side can be brighter. The shortage can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the area on the side of the blinking turn lamp.

Further, when any one of the turn lamps is blinking, the control unit has at least a light forming an extinguished region on the turn lamp side of the fourth region and the fifth region. The light emitting unit is controlled so that a part of the light amount is larger than the light amount of at least a part of the light forming the extinguished region on the turn lamp side of the first region and the second region. Is preferable.

The extinguished turn lamp side region of the 4th region and the 5th region is located in front of the extinguished turn lamp side region of the 1st region and the 2nd region in the traveling direction of the vehicle. It is projected on the road surface. The areas on the turn lamp side that are turned off in the fourth and fifth areas projected in this way are turned off in the first and second areas from the viewpoint of giving the driver a sense of security. It is desired to be brighter than the area on the turn lamp side. Therefore, in this vehicle headlight, when either one of the turn lamps is blinking, at least a part of the light forming the extinguished turn lamp side region of the fourth region and the fifth region. The amount of light in the first region and the second region is larger than the amount of light of at least a part of the light forming the region on the turn lamp side that is turned off. In this case, the amount of light in the extinguished turn lamp side region of the fourth region and the fifth region is not larger than the light intensity in the extinguished turn lamp side region of the first region and the second region. The foreground can be brighter than in the case. Therefore, the driver can easily pay attention to the front, and the driver can be given a sense of security.

Further, when any one of the turn lamps is blinking, the control unit is at least light that forms a blinking region on the turn lamp side of the fourth region and the fifth region. The light emitting unit is controlled so that a part of the light amount is larger than the light amount of at least a part of the light forming the extinguished region on the turn lamp side of the fourth region and the fifth region. Is preferable.

When either one of the turn lamps is blinking, the driver's line of sight is in the fourth region and the fifth region rather than the extinguished turn lamp side region in the fourth region and the fifth region. Focusing on the area on the blinking turn lamp side, the driver often pays more attention to the area on the blinking turn lamp side than the area on the side of the turn lamp that is off. From the above, when one of the turn lamps is blinking, the need for brightness in the area on the blinking turn lamp side is greater than the need for brightness in the area on the turn lamp side that is off. Can be improved. Therefore, in this vehicle headlight, when one of the turn lamps is blinking, at least a part of the light forming the area on the blinking turn lamp side is extinguished. More than at least a portion of the light forming the area on the lamp side. When the amount of light in the area on the blinking turn lamp side is large, the area on the blinking turn lamp side can be brighter than in the case where the amount of light is not large, and the amount of light in the area on the blinking turn lamp side can be brighter. The shortage can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the area on the side of the blinking turn lamp.

Further, in the control unit, when either one of the turn lamps is blinking, the amount of light of at least a part of the light forming the sixth region is blinking in the fourth region and the fifth region. It is preferable to control the light emitting unit so that the amount of light is greater than at least a part of the light forming the region on the turn lamp side.

In the light distribution pattern, the sixth region may be projected in front of the vehicle's driving lane, and the blinking turn lamp side region of the fourth and fifth regions may be projected into the lane adjacent to the traveling lane. .. From the viewpoint of giving the driver a sense of security, the sixth region projected in this way is desired to be brighter than the blinking turn lamp side region of the fourth region and the fifth region. There is. Therefore, in this vehicle headlight, when either one of the turn lamps is blinking, the amount of light of at least a part of the light forming the sixth region blinks in the fourth region and the fifth region. It is more than at least a part of the light forming the area on the turn lamp side. In this case, the front of the traveling lane can be brighter than the case where the amount of light in the sixth region is not larger than the amount of light in the region on the blinking turn lamp side of the fourth region and the fifth region. Therefore, the driver can easily pay attention to the front, and the driver can be given a sense of security.

Further, in the control unit, the amount of light of at least a part of the light forming the sixth region is the first in the case where each of the turn lamps is turned off and the case where either one of the turn lamps is blinking. It is preferable to control the light emitting unit so that the amount of light is less than at least a part of the light forming the three regions.

When each of the turn lamps is off and when either one of the turn lamps is blinking, the sixth region is projected toward the front in the traveling direction of the vehicle rather than the third region. As the vehicle advances, the road surface is irradiated with the light forming the third region and then the light forming the sixth region. In this case, the driver can recognize the road surface by the light forming the third region before the light forming the sixth region. Therefore, the need for brightness in the sixth region is higher than the need for brightness in the third region when each of the turn lamps is off and when either one of the turn lamps is blinking. Can decrease. Therefore, in this vehicle headlight, the amount of light in the sixth region is larger than the amount of light in the third region when each of the turn lamps is off and when either one of the turn lamps is blinking. There are few. In this case, the electric power supplied to the light emitting unit that emits the light forming the sixth region can be reduced as compared with the case where the amount of light in the sixth region is not smaller than the amount of light in the third region. Therefore, according to this vehicle headlight, the power consumption can be reduced.

Further, in the control unit, the amount of light of at least a part of the light forming the third region is the same when each of the turn lamps is turned off and when either one of the turn lamps is blinking. It is preferable to control the light emitting unit so as to be.

The brightness of the third region is the same when each of the turn lamps is off and when either one of the turn lamps is blinking. Therefore, in this vehicle headlight, the burden on the driver's vision due to the change in brightness can be suppressed. Further, in this vehicle headlight, the control unit may supply the same electric power to the light emitting unit depending on whether each of the turn lamps is off or one of the turn lamps is blinking. .. Therefore, in this vehicle headlight, the burden on the control unit can be reduced as compared with the case where the brightness changes.

Further, the light forming the light distribution pattern may be a low beam.

As described above, according to the present invention, it is possible to provide a vehicle headlight capable of suppressing a decrease in visibility of a driver.

FIG. 1 is a plan view conceptually showing a vehicle. FIG. 2 is a side view schematically showing one light emitting unit shown in FIG. 1. FIG. 3 is a front view schematically showing the light distribution pattern forming portion shown in FIG. 2. FIG. 4 is a flowchart showing the operation of the vehicle headlight system. FIG. 5 is a diagram showing a low beam light distribution pattern and an overhead sine light light distribution pattern when each of the turn lamps is turned off and the vehicle is traveling straight. FIG. 6 is a plan view of a vehicle traveling straight when viewed from above in the vertical direction of the vehicle. FIG. 7 is a diagram showing a low beam light distribution pattern and an overhead sine light light distribution pattern when the right turn lamp blinks and the vehicle turns right. FIG. 8 is a plan view of a vehicle turning right when viewed from above in the vertical direction of the vehicle. FIG. 9 is a diagram showing a low beam light distribution pattern and an overhead sine light light distribution pattern when the left turn lamp blinks and the vehicle turns left. FIG. 10 is a plan view of a vehicle turning left when viewed from above in the vertical direction of the vehicle.

Hereinafter, a preferred embodiment of the vehicle headlight according to the present invention will be described in detail with reference to the drawings. The embodiments illustrated below are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. The present invention can be modified or improved without departing from the spirit of the present invention. In addition, the present invention may appropriately combine the components in the embodiments exemplified below. For ease of understanding, some parts may be exaggerated in each figure.

FIG. 1 is a plan view conceptually showing the vehicle 10. As shown in FIG. 1, the vehicle 10 includes a vehicle headlight system 15, and the vehicle headlight system 15 includes a vehicle headlight 20 and a detection device 100.

The vehicle headlight 20 of the present embodiment is a headlight for an automobile. The vehicle headlight 20 mainly includes a pair of light emitting units 30 arranged on the left and right of the front portion of the vehicle 10, a control unit 50, and a recording unit 60. In the present specification, "right" means the right side in the traveling direction of the vehicle 10, and "left" means the left side in the traveling direction of the vehicle 10.

The pair of light emitting units 30 have shapes that are substantially symmetrical to each other in the left-right direction of the vehicle 10. The pair of light emitting units 30 of the present embodiment emits a low beam, an overhead sine light, or a high beam in front of the vehicle 10. The overhead sine light is emitted above the low beam in the vertical direction of the vehicle 10. The configuration of one light emitting unit 30a of the pair of light emitting units 30 is the same as the configuration of the other light emitting unit 30b of the pair of light emitting units 30, except that the shapes are substantially symmetrical.

FIG. 2 is a side view schematically showing one of the light emitting units 30a shown in FIG. As shown in FIG. 2, the light emitting unit 30a includes a housing 31, a light distribution pattern forming unit 33, and a projection lens 35 as main configurations. In FIG. 2, the housing 31 and the projection lens 35 are shown in a vertical cross section.

The housing 31 mainly includes a lamp housing 31a, a front cover 31b, and a back cover 31c. An opening is formed in front of the lamp housing 31a, and the front cover 31b is fixed to the lamp housing 31a so as to close the opening. Further, an opening smaller than the front opening is formed behind the lamp housing 31a, and the back cover 31c is fixed to the lamp housing 31a so as to close the opening.

The lamp housing 31a, the front cover 31b, and the back cover 31c form a lamp chamber 31d as a closed space. The light distribution pattern forming unit 33 and the projection lens 35 are housed in the light chamber 31d. The back cover 31c is openable / closable or removable with respect to the lamp housing 31a for replacement of the light distribution pattern forming portion 33 and the projection lens 35 through the rear opening of the lamp housing 31a.

The front cover 31b is made of a translucent material, and the light emitted from the light distribution pattern forming portion 33 and the projection lens 35 passes through the front cover 31b. The lamp housing 31a and the back cover 31c are made of, for example, resin.

FIG. 3 is a front view schematically showing the light distribution pattern forming portion 33 shown in FIG. 2. As shown in FIG. 3, the light distribution pattern forming unit 33 includes a plurality of light emitting elements 33a that emit light, and a circuit board 33b on which a plurality of light emitting elements 33a are mounted. The plurality of light emitting elements 33a are electrically connected to the control unit 50 via the circuit board 33b. The plurality of light emitting elements 33a are arranged in a matrix to form rows in the vertical direction and the horizontal direction, and emit light toward the front. The light emitting element 33a can individually change the amount of emitted light by the electric power supplied to the light emitting element 33a. In the present embodiment, each of the light emitting elements 33a is, for example, an LED (Light Emitting Diode) that emits white light. Therefore, the light distribution pattern forming unit 33 is an LED array. Further, the number of light emitting elements 33a, the number of rows of light emitting elements 33a, the number of light emitting elements 33a in each row of light emitting elements 33a, the direction in which the light emitting elements 33a are arranged, and the type of light emitting elements 33a are particularly limited. is not it.

Such a light distribution pattern forming unit 33 forms a predetermined light distribution pattern whose size and shape can be changed by selecting a light emitting element 33a that emits light. Further, the light distribution pattern forming unit 33 forms a light distribution pattern in which the light amount distribution can be changed by independently adjusting the amount of light emitted from each light emitting element 33a.

Returning to FIG. 2, the description of the light emitting unit 30a will be continued. The projection lens 35 in the light emitting unit 30a is arranged in front of the light distribution pattern forming portion 33. The projection lens 35 is a lens having an incident surface and an emitted surface formed in a convex shape. The rear focal point of the projection lens 35 is located on or near the light emitting surface of any of the light emitting elements 33a in the light distribution pattern forming unit 33. The projection lens 35 adjusts the divergence angle of the light emitted from the light distribution pattern forming unit 33. The light emitted from the light distribution pattern forming unit 33 is incident on the projection lens 35, and the divergence angle of this light is adjusted by the projection lens 35. The light is emitted from the light emitting unit 30 toward the front of the vehicle 10 via the front cover 31b.

Here, returning to FIG. 1, the description of the vehicle 10 will be continued.

The control unit 50 can use, for example, an integrated circuit such as a microcontroller, an IC (Integrated Circuit), an LSI (Large-scale Integrated Circuit), an ASIC (Application Specific Integrated Circuit), or an NC (Numerical Control) device. Further, when the NC device is used, the control unit 50 may use a machine learning device or may not use a machine learning device. As will be described later, the control unit 50 controls a pair of light emitting units 30 and a pair of turn lamps 153 to be described later.

The control unit 50 determines whether or not a control signal from a light switch (not shown) mounted on the vehicle 10 is input. The control signal is a signal instructing the start of emission of light from the pair of light emitting units 30. This light is, for example, low beam and overhead sine light, or high beam. When the control signal is input to the control unit 50, the control unit 50 drives a pair of light emitting units 30. When the control signal is not input to the control unit 50, the control unit 50 stops driving the pair of light emitting units 30.

The recording unit 60 records the threshold value described later. The recording unit 60 is, for example, a non-transitory recording medium, and a semiconductor recording medium such as a RAM (Random Access Memory) or a ROM (Read Only Memory) is suitable, but an optical recording medium or an optical recording medium is suitable. It may include any type of recording medium such as a magnetic recording medium. The "non-transient" recording medium includes all computer-readable recording media except for transient propagation signals (transitory, propagating signal), and does not exclude volatile recording media. ..

The detection device 100 includes a camera. The camera is attached to the front part of the vehicle 10 and photographs the front of the vehicle 10. The camera may be an infrared camera. The captured image captured by the camera includes at least a part of the region irradiated with the light emitted from the pair of light emitting units 30. The captured image is output to the control unit 50.

The detection device 100 further includes a steering sensor. The steering sensor may be electrically connected to the control unit 50 via the electronic control device of the vehicle 10. The steering sensor is a sensor that detects the rotation direction and rotation angle of the steering wheel of the vehicle 10. Since the rotation direction and rotation angle of the steering wheel correspond to the direction in which the vehicle 10 turns and the steering angle of the vehicle 10, the steering sensor is also a sensor that detects the direction in which the vehicle 10 turns and the steering angle of the vehicle 10. The direction in which the vehicle 10 turns and the steering angle of the vehicle 10 indicate the traveling condition information indicating the traveling condition of the vehicle 10, and the traveling condition information can be understood as the traveling information. Therefore, it can be understood that the detection device 100 detects the traveling information of the vehicle 10. The steering sensor of the detection device 100 outputs a signal indicating traveling information that can change from moment to moment to the control unit 50 at any time.

Further, the vehicle headlight system 15 further includes a turn switch 151 and a pair of left and right turn lamps 153. The turn switch 151 may be electrically connected to the control unit 50 via the electronic control device of the vehicle 10. The turn switch 151 is a switch for selecting one of blinking of the turn lamp 153 on the right side of the vehicle 10, blinking of the turn lamp 153 on the left side, and turning off both the turn lamp 153 on the right side and the turn lamp 153 on the left side. be. When the turn switch 151 selects blinking of the right turn lamp 153, the turn switch 151 outputs a signal indicating an instruction for blinking the right turn lamp 153 to the control unit 50. When the turn switch 151 selects blinking of the left turn lamp 153, the turn switch 151 outputs a signal indicating an instruction for blinking the left turn lamp 153 to the control unit 50. In this way, the turn switch 151 changes the signal output to the control unit 50 according to the selection. The control unit 50 supplies electric power to the turn lamp 153 on the right side or the turn lamp 153 on the left side in response to the signal, and blinks the turned lamp 153 to which the electric power is supplied. The turn lamp 153 displays a change of course of the vehicle 10, such as a right turn or a left turn of the vehicle 10 at an intersection, around the vehicle 10 by blinking the turn lamp 153. When the turn switch 151 selects to turn off the right turn lamp 153 and the left turn lamp 153, the turn switch 151 does not output a signal to the control unit 50. If no signal is input to the control unit 50, the control unit 50 does not supply power to the right turn lamp 153 and the left turn lamp 153, and turns off the right turn lamp 153 and the left turn lamp 153. Further, the control unit 50 is a pair of light emitting units as described later according to the blinking of either the right turn lamp 153 or the left turn lamp 153 or the extinguishing of the right turn lamp 153 and the left turn lamp 153. 30 is controlled, and the light amount distribution in the light distribution pattern is adjusted as described later.

The turn switch 151 selects to turn off both the right turn lamp 153 and the left turn lamp 153 as an initial state. When the vehicle 10 makes a right turn or a left turn, the turn switch 151 selects the blinking of the right turn lamp 153 or the left turn lamp 153 by the driver's operation. Here, when the vehicle 10 is traveling straight, the steering angle of the vehicle 10 is approximately 0 degrees, and the steering angle of the vehicle 10 at 0 degrees is used as a reference angle. When the vehicle 10 turns right or left, the steering angle changes to a predetermined angle equal to or higher than the reference angle. When the traveling state of the vehicle 10 changes from the state of turning right or turning left to the state of going straight, the steering angle returns from the predetermined angle to the reference angle. When the steering angle of the vehicle 10 becomes smaller than the predetermined angle after the turn switch 151 selects blinking, the control unit 50 selects the turn switch 151 to turn off both the right turn lamp 153 and the left turn lamp 153. Switch to the state of

The configuration of the right turn lamp 153 is the same as the configuration of the left turn lamp 153, except that the shape is substantially symmetrical. The configuration of the turn lamp 153 on the right side is not particularly limited, and may be a parabolic light emitting unit, a projector type light emitting unit, a direct lens type light emitting unit, or the like. The configuration of the right turn lamp 153 may be the same as the configuration of one of the light emitting units 30a.

Next, the operation of the vehicle headlight system 15 of the present embodiment will be described.

FIG. 4 is a flowchart showing the operation of the vehicle headlight system 15 in the present embodiment. As shown in FIG. 4, the flowchart of the present embodiment includes steps S1 to S6.

(Step S1)
In this step, the control unit 50 determines whether or not to emit light based on the control signal from the light switch. When the control signal is not input to the control unit 50 and no light is emitted, the control unit 50 stops driving the pair of light emitting units 30, and the process returns to step S1. Further, when the control signal is input to the control unit 50 and the light is emitted, the process proceeds to step S2.

(Step S2)
In this step, it is assumed that the vehicle 10 is traveling straight on a general road in an urban area. Here, it is assumed that the general road is a straight road with two lanes on each side, and the vehicle 10 is traveling in the left lane of the two lanes on each side. In the following, the lane in which the vehicle 10 is traveling may be referred to as a traveling lane. On a general road on which vehicle 10 is traveling, the shoulder is located on the left side of the traveling lane, the overtaking lane is located on the right side of the traveling lane, and the oncoming lane is located on the right side of the overtaking lane. ..

The control unit 50 drives a pair of light emitting units 30, and the pair of light emitting units 30 emits a low beam and overhead sine light toward the front of the vehicle 10. Further, the control unit 50 turns off each of the turn lamps 153. FIG. 5 is a diagram showing a low beam light distribution pattern 800 and an overhead sine light light distribution pattern 400 when each of the turn lamps 153 is turned off and the vehicle 10 is traveling straight on the general road 220. The light distribution pattern 800 and the light distribution pattern 400 are formed on a virtual vertical screen located, for example, 25 m ahead of the vehicle 10. In FIG. 5, the light distribution pattern 800 is shown by a thick line, and the light distribution pattern 400 is shown by a broken line. The light distribution pattern 400 is a light distribution pattern projected above the light distribution pattern 800 in the vertical direction of the vehicle 10. The light distribution pattern 400 improves the visibility of an object (not shown) located above the light distribution pattern 800. Such an object is, for example, a road sign or the like. In FIG. 5, S indicates a horizontal line, L0 indicates a straight line extending in the front-rear direction of the vehicle 10 through the center of the vehicle 10 in the left-right direction, and V indicates a vertical line orthogonal to the straight line L0.

The light distribution pattern 800 has cut-off lines CL1, CL2, and CL3 on the upper edge. The cut-off line CL1 is provided on the opposite side of the cut-off line CL3 with the cut-off line CL2 as a reference. The intersection of the cut-off line CL1 and the cut-off line CL2 is referred to as an elbow point EP. The elbow point EP is located below the horizon S and above the vertical line V. The elbow point EP may be located below the horizon S and near the vertical line V. The cut-off line CL1 extends horizontally from the elbow point EP to the right side, which is one side of the vehicle 10 in the left-right direction. The cut-off line CL2 extends from the elbow point EP toward the diagonally upper left in the vertical and horizontal directions of the vehicle 10. The end of the cut-off line CL2 on the side opposite to the elbow point EP side is located above the horizon S. The cut-off line CL3 extends horizontally from the above-mentioned end of the cut-off line CL2 to the left side in the left-right direction of the vehicle 10. Further, the hot zone HZL in the light distribution pattern 800 is located in the vicinity of the elbow point EP. The hot zone HZL is the brightest region in the light distribution pattern 800. Therefore, it can be understood that the hot zone HZL is a region having the largest amount of light in the light distribution pattern 800. As the light amount distribution of the light distribution pattern 800, the light amount gradually decreases as the distance from the hot zone HZL increases. Therefore, the outer peripheral edge side of the light distribution pattern 800 is darker than the hot zone HZL side.

In a country or region where the right-hand traffic of the vehicle 10 is operated, the light distribution pattern 800 has a shape substantially symmetrical with the light distribution pattern 800 shown in FIG. Therefore, the cut-off line CL1 extends horizontally to the left from the elbow point EP, and the cut-off line CL2 extends diagonally upward to the right from the elbow point EP.

The center of the light distribution pattern 400 is located in the vicinity of the vertical line V. Further, the center of the light distribution pattern 400 is located above the cut-off line CL2 in the vertical direction of the vehicle 10. The center of the light distribution pattern 400 may be located on the vertical line V. Alternatively, the center of the light distribution pattern 400 may be located above the elbow point EP in the vertical direction of the vehicle 10. In the left-right direction of the vehicle 10, the width of the light distribution pattern 400 is narrower than the width of the light distribution pattern 800. The right edge of the light distribution pattern 400 is located above the cut-off line CL1 in the vertical direction of the vehicle 10. Further, the left edge of the light distribution pattern 400 is located above the cut-off line CL3 in the vertical direction of the vehicle 10.

In the vehicle headlight 20 of the present embodiment, the light distribution pattern 800 is divided into six regions in the vertical and horizontal directions of the vehicle 10, and the adjacent regions in the vertical and horizontal directions of the vehicle 10 are in contact with each other. It shall be. Each of the regions will be described as a first region 801, a second region 802, a third region 803, a fourth region 804, a fifth region 805, and a sixth region 806. The first region 801 and the second region 802 and the third region 803 are the upper regions in the vertical direction of the vehicle 10, and the fourth region 804, the fifth region 805, and the sixth region 806 are the upper regions in the vertical direction of the vehicle 10. The lower area.

The first region 801 is a region located on the right side in the left-right direction of the vehicle 10. The second region 802 is a region located on the left side in the left-right direction of the vehicle 10. The third region 803 is a region located between the first region 801 and the second region 802 in the left-right direction of the vehicle 10. Since the straight line L0 passes through the third region 803, the first region 801 is a region located on the right side in the left-right direction of the vehicle 10, and the second region 802 is a region located on the left side in the left-right direction of the vehicle 10. Further, a V line passes through the third region 803, and the elbow point EP and the hot zone HZL are located. The third region 803 is located below the light distribution pattern 400 in the vertical direction of the vehicle 10.

The fourth region 804 is a region located below the first region 801 in the vertical direction of the vehicle 10. The fifth region 805 is a region located below the second region 802 in the vertical direction of the vehicle 10. The sixth region 806 is a region located between the fourth region 804 and the fifth region 805 in the left-right direction of the vehicle 10, and is a region located below the third region 803 in the vertical direction of the vehicle 10. Further, a V line passes through the sixth region 806.

The control unit 50 controls the pair of light emitting units 30 so that the heights of the fourth region 804, the fifth region 805, and the sixth region 806 are the same as each other and lower than the height of the first region 801. do. Here, the light distribution pattern 800 including the upper region of the light distribution pattern 800 including the first region 801 and the second region 802 and the third region 803, and the fourth region 804, the fifth region 805, and the sixth region 806. The boundary line with the lower region will be described. This boundary line is preferably located, for example, about 2 to 3 degrees below the cut-off line CL1 from the viewpoint of suppressing the application of glare to the driver of the oncoming vehicle in rainy weather.

By the way, FIG. 6 is a plan view of a vehicle 10 traveling straight on a general road 220 when viewed from above in the vertical direction of the vehicle 10. The general road 220 includes a traveling lane 220a, an overtaking lane 220b, and a two-lane oncoming lane 220c. For example, the average speed of the vehicle 10 traveling on the general road 220 is 40 km / h, and the stopping distance of the vehicle 10 in this case is 20.1 m, which is 25 m with a margin. In FIG. 6, the plane 601 is a surface along the vertical direction and the front-rear direction of the vehicle 10, and is a surface passing through the center of the vehicle 10 in the left-right direction at the front end of the vehicle 10. Here, the position of the plane 601 is referred to as a reference position. When the light distribution pattern 800 is projected onto the four lanes of the general road 220 located 25 m ahead of the front end of the vehicle 10, the light distribution pattern 800 has a plane 601 spreading counterclockwise from the reference position with the center as a fulcrum. It suffices to be located between the first position rotated by θ1 and the second position where the plane 601 spreads clockwise from the reference position with the center as a fulcrum and is rotated by the angle θ2. The angle θ1 is 7 degrees and the angle θ2 is 29 degrees. Further, 25 m ahead of the front end of the vehicle 10 is desired to be visually inspected by the driver of the vehicle 10 in order to avoid a collision with the preceding vehicle in the traveling lane 220a. Therefore, from the viewpoint of giving a sense of security to the driver of the vehicle 10, in the third region 803, the plane 601 spreads counterclockwise from the reference position with the center as a fulcrum and rotates at an angle θ3, and the plane 601 is the reference position. It may be located between the second position and the second position, which spreads clockwise with the center as a fulcrum and rotates at an angle θ4. The angle θ3 is 4 degrees and the angle θ4 is 26 degrees. When the vehicle 10 is traveling on the general road 220, the width of the third region 803 is smaller than the width of the light distribution pattern 400, as shown in FIG. Further, the right edge of the third region 803 is located on the left side of the right edge of the light distribution pattern 400, and the left edge of the third region 803 is located on the right side of the left edge of the light distribution pattern 400.

As shown in FIG. 5, the third region 803 is adjacent to the first region 801 on the right side of the vehicle 10 in the left-right direction. Therefore, the left edge of the first region 801 is located on the left side of the right edge of the light distribution pattern 400. Further, the third region 803 is adjacent to the second region 802 on the left side of the vehicle 10 in the left-right direction. Therefore, the right edge of the second region 802 is located on the right side of the left edge of the light distribution pattern 400. The left edge of the first region 801 is located above the left edge of the fourth region 804, and the right edge of the first region 801 is located above the right edge of the fourth region 804. The left edge of the second region 802 is located above the left edge of the fifth region 805, and the right edge of the second region 802 is located above the right edge of the fifth region 805. The left edge of the third region 803 is located above the left edge of the sixth region 806, and the right edge of the third region 803 is located above the right edge of the sixth region 806.

The control unit 50 controls the pair of light emitting units 30 so that the widths of the first region 801 and the second region 802, the fourth region 804, and the fifth region 805 are the same as each other. In this case, the length obtained by equally dividing the remaining width obtained by subtracting the width of the third region 803 from the width of the light distribution pattern 800 is the width of each region, and the width of the sixth region 806 is the width of the third region 803. Same as width. Here, the widths of the first region 801 and the second region 802, the fourth region 804, and the fifth region 805 are larger than the width of the third region 803, respectively.

The upper edge of the light distribution pattern 800 is the upper edge of each of the first region 801 and the second region 802, and the third region 803. The upper edge of the first region 801 is a part of the cut-off line CL1, and the upper edge of the second area 802 is a part of the cut-off line CL3. Further, the upper edge of the third region 803 is a remaining part of the cut-off line CL1, a cut-off line CL2, and a remaining part of the cut-off line CL3. The lower edge of the light distribution pattern 800 is the lower edge of each of the fourth region 804, the fifth region 805, and the sixth region 806. The right edge of the light distribution pattern 800 is the right edge of each of the first region 801 and the fourth region 804, and the left edge of the light distribution pattern 800 is the left edge of each of the second region 802 and the fifth region 805.

In this step, the first region 801 is mainly projected on the road surface of a part of the overtaking lane 220b and a part of the oncoming lane 220c located in the light distribution pattern 800. The second region 802 is mainly projected on a part of the road surface and a part of the road shoulder 220d of the traveling lane 220a located in the light distribution pattern 800. The third region 803 is mainly projected on another part of the road surface of the traveling lane 220a and another part of the road shoulder 220d. The fourth region 804 is mainly projected on another part of the road surface of the traveling lane 220a located in the light distribution pattern 800 and the remaining part of the road surface of the overtaking lane 220b. The traveling lane 220a and the overtaking lane 220b in the fourth region 804 are located in front of the traveling lane 220a and the overtaking lane 220b in the first region 801 in the traveling direction of the vehicle 10. The fifth region 805 is mainly projected on another part of the road surface of the traveling lane 220a located in the light distribution pattern 800 and the remaining part of the shoulder 220d. The traveling lane 220a and the road shoulder 220d in the fifth region 805 are located in front of the traveling lane 220a and the road shoulder 220d in the second region 802 in the traveling direction of the vehicle 10. The sixth region 806 is mainly projected on the remaining part of the road surface of the traveling lane 220a located in the light distribution pattern 800. The traveling lane 220a in the sixth region 806 is located in front of the traveling lane 220a in the third region 803 in the traveling direction of the vehicle 10.

In this step, if the signal indicating the instruction for blinking the right turn lamp 153 and the signal indicating the instruction for blinking the left turn lamp 153 are not input from the turn switch 151 to the control unit 50, the control unit 50 , Each of the turn lamps 153 is turned off, and the power supplied to each light emitting element 33a of the pair of light emitting units 30 is adjusted. As a result, the amount of light emitted from each of the light emitting elements 33a is adjusted, the amount of light distribution in the light distribution pattern 800 is adjusted, and a straight-ahead light distribution pattern is formed. The adjustment of the amount of light will be described below.

In the control unit 50, when each of the turn lamps 153 is turned off, the amount of light forming the first region 801 and the amount of light forming the second region 802 are the amount of light forming the third region 803. The pair of light emitting units 30 are controlled so as to be less than.

When each of the turn lamps 153 is turned off, the vehicle 10 is in a straight-ahead state. The driver's line of sight is more focused on the third region 803 than on the first region 801 and the second region 802, and the driver often pays more attention to the third region 803 than on the first region 801 and the second region 802. .. As described above, when the vehicle 10 is traveling straight, the need for brightness in the first region 801 and the second region 802 may be lower than the need for brightness in the third region 803. Therefore, in the vehicle headlight 20, when each of the turn lamps 153 is turned off, the amount of light forming the first region 801 and the amount of light forming the second region 802 are the third region. It is less than the amount of light forming 803. As a result, when the vehicle 10 is traveling straight, the first region 801 and the second region 802 become darker than the third region 803.

Further, in the control unit 50, when each of the turn lamps 153 is turned off, the amount of light forming the fourth region 804 and the amount of light forming the fifth region 805 form the sixth region 806. The pair of light emitting units 30 are controlled so as to be less than the amount of light of.

When each of the turn lamps 153 is turned off, the vehicle 10 is in a straight-ahead state, the driver's line of sight is concentrated on the sixth region 806 rather than the fourth region 804 and the fifth region 805, and the driver Often, attention is paid to the sixth region 806 as compared to the fourth region 804 and the fifth region 805. As described above, when the vehicle 10 is traveling straight, the need for brightness in the fourth region 804 and the fifth region 805 may be lower than the need for brightness in the sixth region 806. Therefore, in the vehicle headlight 20, when each of the turn lamps 153 is turned off, the amount of light forming the fourth region 804 and the amount of light forming the fifth region 805 are the sixth region. It is less than the amount of light forming 806. As a result, when the vehicle 10 is traveling straight, the fourth region 804 and the fifth region 805 are darker than the sixth region 806.

The amount of light in the first region 801 and the second region 802, the fifth region 805, and the sixth region 806 is preferably the minimum necessary amount of light, not extinguished. The minimum required amount of light is, for example, a brightness such that the visibility of the driver of the vehicle 10 is ensured in front of the vehicle 10. The minimum required amount of light is recorded in the recording unit 60 as a threshold value, and may be appropriately changed according to the traveling condition of the vehicle 10 such as daytime or nighttime.

The fourth region 804 is projected onto the road surface located in front of the first region 801 in the traveling direction of the vehicle 10. The fourth region 804 projected in this way is desired to be brighter than the first region 801 from the viewpoint of giving a sense of security to the driver. Therefore, in the vehicle headlight 20, when each of the turn lamps 153 is turned off, even if the amount of light forming the fourth region 804 is larger than the amount of light forming the first region 801. good. In this case, the foreground can be brighter than the case where the amount of light in the fourth region 804 is not larger than the amount of light in the first region 801. Therefore, the driver can easily pay attention to the front, and the driver can be given a sense of security. Further, similarly to the first region 801 and the fourth region 804, the amount of light forming the fifth region 805 may be larger than the amount of light forming the second region 802, and the sixth region 806 may be formed. The amount of light formed may be greater than the amount of light forming the third region 803.

Alternatively, the relationship between the amount of light in the first region 801 and the amount of light in the fourth region 804 may be the opposite of the above. The first region 801 is projected forward of the fourth region 804 in the traveling direction of the vehicle 10. The first region 801 projected in this way can be projected onto a preceding vehicle traveling in, for example, the overtaking lane 220b before the fourth region 804, and is more than the fourth region 804 from the viewpoint of giving attention to the driver. It is hoped that it will be brightened. Therefore, in the vehicle headlight 20, when each of the turn lamps 153 is turned off, even if the amount of light forming the first region 801 is larger than the amount of light forming the fourth region 804. good. In this case, the front can be brighter than the case where the amount of light in the first region 801 is not larger than the amount of light in the fourth region 804. Therefore, the driver may be more likely to look forward and the driver may be given attention. Further, similarly to the first region 801 and the fourth region 804, the amount of light forming the second region 802 may be larger than the amount of light forming the fifth region 805, and the third region 803 may be formed. The amount of light formed may be greater than the amount of light forming the sixth region 806.

The amount of light in the first region 801 and the second region 802, the fourth region 804, and the fifth region 805 may be the same as each other. The amount of light in the third region 803 and the sixth region 806 may be the same as each other.

When the amount of light is adjusted in the straight-ahead light distribution pattern 800 as described above, the process proceeds to step S3.

(Step S3)
In this step, the control unit 50 determines whether or not a signal indicating an instruction for blinking the right turn lamp 153 is input from the turn switch 151 to the control unit 50. When a signal indicating an instruction for blinking the right turn lamp 153 is input from the turn switch 151 to the control unit 50, the control unit 50 blinks the right turn lamp 153, and the process proceeds to step S4. If the signal is not input, the process proceeds to step S5.

(Step S4)
In this step, a state in which the vehicle 10 is located in the right turn lane of a general road and turns right at an intersection will be described. Here, the driving lane side of a general road consists of two lanes on each side and a right turn lane.

The control unit 50 drives a pair of light emitting units 30, and the pair of light emitting units 30 emits a low beam and overhead sine light toward the front of the vehicle 10. Further, the control unit 50 blinks the right turn lamp 153. FIG. 7 is a diagram showing a low beam light distribution pattern 800 and an overhead sine light light distribution pattern 400 when the turn lamp 153 on the right side blinks and the vehicle 10 turns right on the general road 220. The shape, size, and light amount distribution of the light distribution pattern 400 are the same when each of the turn lamps 153 is turned off and when the right turn lamp 153 is blinking.

The shape and size of the light distribution pattern 800 when the right turn lamp 153 is blinking is the same as the shape and size of the light distribution pattern 800 when each of the turn lamps 153 is off. However, the light amount distribution in the light distribution pattern 800 differs between the case where each of the turn lamps 153 is turned off and the case where the right turn lamp 153 is blinking. The light amount distribution in the light distribution pattern 800 when the turn lamp 153 on the right side is blinking will be described below.

FIG. 8 is a plan view of the vehicle 10 traveling in the right turn lane 220e when viewed from above in the vertical direction of the vehicle 10. As described above, the average speed of the vehicle 10 traveling on the general road 220 is 40 km / h, and the stopping distance of the vehicle 10 in this case is 20.1 m, which is 25 m with a margin. In the light distribution pattern 800, the plane 601 spreads counterclockwise from the reference position with the center as a fulcrum and rotates at an angle θ5, and the plane 601 spreads clockwise from the reference position with the center as a fulcrum and rotates at an angle θ6. It suffices to be located between the second position and the second position. The angle θ5 is 21.8 degrees and the angle θ6 is 33.5 degrees. In addition, 25 m ahead of the front end of the vehicle 10, avoid collision between the vehicle 10 and the preceding vehicle in the traveling lane 220a, and confirm an object such as a pedestrian walking on the pedestrian crossing on the right turn side by the driver of the vehicle 10. Therefore, it is desired that the driver of the vehicle 10 see it. Therefore, from the viewpoint of giving a sense of security to the driver of the vehicle 10, the left edge of the third region 803 and the sixth region 806 and the right edge of the first region 801 and the fourth region 804 are centered on the plane 601 from the reference position. The plane 601 may be located between the first position rotated counterclockwise at an angle θ7 and the second position rotated clockwise with the center as a fulcrum from the reference position. The angle θ7 is 18.8 degrees.

Returning to FIG. 7, the light distribution pattern 800 will be described. The first region 801 is mainly projected on a part of the road surface of the oncoming lane 220c located in the light distribution pattern 800. The second region 802 is mainly projected on a part of the road surface of the left lane 220f of the right turn lane 220e located in the light distribution pattern 800. The third region 803 is mainly projected on a part of the road surface of the right turn lane 220e. The fourth region 804 is mainly projected on the road surface of another part of the right turn lane 220e located in the light distribution pattern 800 and the remaining part of the oncoming lane 220c. The road surface in the fourth region 804 is located in front of the road surface in the first region 801 in the traveling direction of the vehicle 10. The fifth region 805 is mainly projected on the road surface of another part of the right turn lane 220e located in the light distribution pattern 800 and the remaining part of the lane 220f. The road surface in the fifth region 805 is located in front of the road surface in the second region 802 in the traveling direction of the vehicle 10. The sixth region 806 is mainly projected on the remaining part of the road surface of the right turn lane 220e located in the light distribution pattern 800. The right turn lane 220e in the sixth region 806 is located in front of the right turn lane 220e in the third region 803 in the traveling direction of the vehicle 10.

In this step, when a signal indicating an instruction for blinking the right turn lamp 153 is input from the turn switch 151 to the control unit 50, the control unit 50 blinks the right turn lamp 153 and emits a pair of light. The electric power supplied to each light emitting element 33a of the unit 30 is adjusted. As a result, the amount of light emitted from each of the light emitting elements 33a is adjusted, the amount of light distribution in the light distribution pattern 800 is adjusted, and the light distribution pattern for turning right is formed. The adjustment of the amount of light will be described below.

When the turn lamp 153 on the right side is blinking, the control unit 50 is responsible for the blinking right turn of the first area 801 and the second area 802 than when each of the turn lamps 153 is off. The pair of light emitting units 30 are controlled so that the amount of light forming the first region 801 on the lamp 153 side is increased.

When the turn lamp 153 on the right side is blinking, the vehicle 10 is in a state of turning right, the first area 801 is the area on the turning side, and the second area 802 is the area on the opposite side to the turning side. The driver's line of sight is focused on the first area 801 on the right side of the blinking right turn lamp 153 of the first area 801 and the second area 802, and the driver is focused on the third area 803 and the left side that is off. Often, attention is paid to the first area 801 on the right side of the turn lamp 153, which is blinking compared to the second area 802 on the turn lamp 153 side. As described above, when the right turn lamp 153 is blinking, the need for brightness of the first region 801 on the blinking right turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when the right turn lamp 153 is blinking, the amount of light forming the first region 801 is larger than when each of the turn lamps 153 is off. .. As a result, when the vehicle 10 is turning right, the first region 801 becomes brighter than when the vehicle 10 is traveling straight.

Further, the control unit 50 forms the first region 801 on the blinking right side turn lamp 153 side of the first region 801 and the second region 802 when the right turn lamp 153 is blinking. The pair of light emitting units 30 are controlled so that the amount of light is equal to or greater than the amount of light forming the third region 803. As a result, the blinking right turn lamp 153 side first region 801 becomes brighter than the third region 803. The first region 801 may be brighter than any part of the third region 803, may be brighter than the darkest portion of the third region 803, or may be brighter than the brightest portion of the third region 803. It may be brighter. For example, the darkest portion of the third region 803 is the left and right ends of the third region 803, and the brightest portion of the third region 803 is the central portion of the third region 803 and the vicinity of the hot zone HZL.

Further, when the turn lamp 153 on the right side is blinking, the control unit 50 is in the blinking turn of the fourth region 804 and the fifth region 805 than when each of the turn lamps 153 is turned off. The pair of light emitting units 30 are controlled so that the amount of light forming the fourth region 804 on the lamp 153 side is increased.

When the turn lamp 153 on the right side is blinking, the vehicle 10 is in a state of turning right, the fourth area 804 is the area on the turning side, and the fifth area 805 is the area on the opposite side to the turning side. The driver's line of sight is focused on the blinking right turn lamp 153 side of the fourth area 804 of the fourth area 804 and the fifth area 805, and the driver is on the left turn lamp 153 side that is off. Often, attention is paid to the fourth area 804 on the right turn lamp 153 side, which is blinking compared to the fifth area 805. As described above, when the right turn lamp 153 is blinking, the need for brightness of the fourth region 804 on the blinking right turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when the right turn lamp 153 is blinking, the amount of light forming the fourth region 804 is larger than when each of the turn lamps 153 is off. .. As a result, when the vehicle 10 is turning right, the fourth region 804 becomes brighter than when the vehicle 10 is traveling straight.

Further, the control unit 50 forms the fifth region 805 on the left turn lamp 153 side of the fourth region 804 and the fifth region 805 when the right turn lamp 153 is blinking. The pair of light emitting units 30 are arranged so that the amount of light is larger than the amount of light forming the second region 802 on the left turn lamp 153 side which is turned off in the first region 801 and the second region 802. Control. The fifth region 805 may be brighter than any part of the second region 802, may be brighter than the darkest portion of the second region 802, or may be brighter than the brightest portion of the second region 802. It may be brighter. For example, the darkest portion of the second region 802 is the left and right ends of the second region 802, and the brightest portion of the second region 802 is the central portion of the second region 802.

The 5th area 805 on the left side of the turn lamp 153 on the left side of the 4th area 804 and the 5th area 805 is the turn lamp 153 on the left side of the 1st area 801 and the 2nd area 802. It is projected onto the road surface located in front of the second region 802 on the side in the traveling direction of the vehicle 10. The fifth region 805 projected in this way is desired to be brighter than the second region 802 from the viewpoint of giving a sense of security to the driver. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the right side is blinking, the amount of light forming the fifth region 805 is larger than the amount of light forming the second region 802. As a result, the fifth region 805 becomes brighter than the second region 802.

Further, the control unit 50 forms the fourth region 804 on the blinking right side turn lamp 153 side of the fourth region 804 and the fifth region 805 when the right turn lamp 153 is blinking. The pair of light emitting units 30 are arranged so that the amount of light is larger than the amount of light forming the fifth region 805 on the left turn lamp 153 side which is turned off in the fourth region 804 and the fifth region 805. Control. The fourth region 804 may be brighter than any part of the fifth region 805, may be brighter than the darkest portion of the fifth region 805, or may be brighter than the brightest portion of the fifth region 805. It may be brighter. For example, the darkest portion of the fifth region 805 is the left and right ends of the fifth region 805, and the brightest portion of the fifth region 805 is the central portion of the fifth region 805.

When the right turn lamp 153 is blinking, the driver's line of sight is the fourth region 805 of the fourth region 804 and the fifth region 805, rather than the fifth region 805 on the left turn lamp 153 side that is turned off. Of the 804 and the 5th area 805, the blinking is concentrated on the 4th area 804 on the right turn lamp 153 side, and the driver blinks compared to the 5th area 805 on the left turn lamp 153 side which is off. Often pay attention to the fourth area 804 on the right turn signal 153 side. As described above, when the right turn lamp 153 is blinking, the need for the brightness of the fourth region 804 can be improved more than the need for the brightness of the fifth region 805. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the right side is blinking, the amount of light forming the fourth region 804 is larger than the amount of light forming the fifth region 805. As a result, the fourth region 804 becomes brighter than the fifth region 805.

Further, in the control unit 50, when the right turn lamp 153 is blinking, the amount of light forming the sixth region 806 is the blinking right turn of the fourth region 804 and the fifth region 805. The pair of light emitting units 30 are controlled so as to be larger than the amount of light forming the fourth region 804 on the lamp 153 side. The sixth region 806 may be brighter than any part of the fourth region 804, may be brighter than the darkest portion of the sixth region 806, or may be brighter than the brightest portion of the sixth region 806. It may be brighter. For example, the darkest portion of the sixth region 806 is the upper and lower ends of the sixth region 806, and the brightest portion of the sixth region 806 is the central portion of the sixth region 806.

In the light distribution pattern, the sixth region 806 is projected in front of the right turn lane 220e of the vehicle 10, and the fourth region 804 on the right side of the blinking right turn lamp 153 of the fourth region 804 and the fifth region 805 is It can be projected into the lane next to the lane. The sixth region 806 projected in this way is from the fourth region 804 on the right turn lamp 153 side of the blinking right side of the fourth region 804 and the fifth region 805 from the viewpoint of giving a sense of security to the driver. Is also desired to be brightened. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the right side is blinking, the amount of light forming the sixth region 806 is larger than the amount of light forming the fourth region 804. As a result, the sixth region 806 becomes brighter than the fourth region 804.

Further, in the control unit 50, the amount of light forming the sixth region 806 forms the third region 803 when each of the turn lamps 153 is turned off and when the right turn lamp 153 is blinking. The pair of light emitting units 30 are controlled so as to be less than the amount of light to be emitted.

When each of the turn lamps 153 is turned off and when the turn lamp 153 on the right side is blinking, the sixth region 806 is projected toward the front of the third region 803 in the traveling direction of the vehicle 10. As the vehicle 10 advances, the road surface is irradiated with the light forming the third region 803 and then the light forming the sixth region 806. In this case, the driver may recognize the road surface by the light forming the third region 803 before the light forming the sixth region 806. Therefore, the necessity of the brightness of the sixth region 806 becomes the necessity of the brightness of the third region 803 in the case where each of the turn lamps 153 is turned off and the case where the turn lamp 153 on the right side is blinking. Can be lower than that. Therefore, in the vehicle headlight 20, the amount of light in the sixth region 806 is the third region 803 in the case where each of the turn lamps 153 is turned off and the case where the right turn lamp 153 is blinking. Less than the amount of light in. As a result, the sixth region 806 becomes darker than the third region 803.

Further, the control unit 50 makes sure that the amount of light forming the third region 803 is the same when each of the turn lamps 153 is turned off and when the right turn lamp 153 is blinking. It controls a pair of light emitting units 30. As a result, the brightness of the third region 803 is the same when each of the turn lamps 153 is turned off and when the right turn lamp 153 is blinking.

When the amount of light is adjusted in the light distribution pattern 800 for turning right as described above, the process returns to step S3.

(Step S5)
In this step, the control unit 50 determines whether or not a signal indicating an instruction for blinking the left turn lamp 153 is input from the turn switch 151 to the control unit 50. When a signal indicating an instruction for blinking the left turn lamp 153 is input from the turn switch 151 to the control unit 50, the control unit 50 blinks the left turn lamp 153, and the process proceeds to step S6. If the signal is not input, the process returns to step S1.

(Step S6)
In this step, a state in which the vehicle 10 is located in the left lane of two lanes on each side of a general road and turns left at an intersection will be described. Here, the traveling lane side of a general road consists of two lanes on each side.

The control unit 50 drives a pair of light emitting units 30, and the pair of light emitting units 30 emits a low beam and overhead sine light toward the front of the vehicle 10. Further, the control unit 50 blinks the turn lamp 153 on the left side. FIG. 9 is a diagram showing a low beam light distribution pattern 800 and an overhead sine light light distribution pattern 400 when the left turn lamp 153 blinks and the vehicle 10 turns left on the general road 220. The shape, size, and light amount distribution of the light distribution pattern 400 are the same when each of the turn lamps 153 is turned off and when the left turn lamp 153 is blinking.

The shape and size of the light distribution pattern 800 when the left turn lamp 153 is blinking is the light distribution pattern when each of the turn lamps 153 is off and the right turn lamp 153 is blinking. It is the same as the shape and size of 800. However, the light amount distribution in the light distribution pattern 800 is symmetrical with the case where the turn lamp 153 on the right side is blinking. The light amount distribution in the light distribution pattern 800 when the left turn lamp 153 is blinking will be described below.

FIG. 10 is a plan view of the vehicle 10 traveling in the traveling lane 220a when viewed from above in the vertical direction of the vehicle 10. As described above, the average speed of the vehicle 10 traveling on the general road 220 is 40 km / h, and the stopping distance of the vehicle 10 in this case is 20.1 m, which is 25 m with a margin. In the light distribution pattern 800, the plane 601 spreads counterclockwise from the reference position with the center as a fulcrum and rotates at an angle θ8, and the plane 601 spreads clockwise from the reference position with the center as a fulcrum and rotates at an angle θ9. It suffices to be located between the second position and the second position. The angle θ8 is 21.3 degrees and the angle θ9 is 29 degrees. In addition, 25 m ahead of the front end of the vehicle 10, avoid collision between the vehicle 10 and the preceding vehicle in the traveling lane 220a, and confirm an object such as a pedestrian walking on the pedestrian crossing on the left turn side by the driver of the vehicle 10. Therefore, it is desired that the driver of the vehicle 10 see it. Therefore, from the viewpoint of giving a sense of security to the driver of the vehicle 10, the left edge of the second region 802 and the fifth region 805 and the right edge of the third region 803 and the sixth region 806 are centered on the plane 601 from the reference position. The plane 601 may be located between the first position rotated counterclockwise at a spread angle θ8 and the second position rotated clockwise with the center as a fulcrum from the reference position. The angle θ10 is 26 degrees.

Returning to FIG. 9, the light distribution pattern 800 will be described. The first region 801 is mainly projected onto a part of the overtaking lane 220b located in the light distribution pattern 800 and the road surface of the oncoming lane 220c. The second region 802 is mainly projected on a part of the road surface of the traveling lane 220a located in the light distribution pattern 800, a part of the shoulder 220d, and a part of the pedestrian crossing 220g. The third region 803 is mainly projected onto another part of the road surface of the traveling lane 220a. The fourth region 804 is mainly projected on another part of the road surface of the traveling lane 220a and the remaining part of the road surface of the overtaking lane 220b. The traveling lane 220a and the overtaking lane 220b in the fourth region 804 are located in front of the traveling lane 220a and the overtaking lane 220b in the first region 801 in the traveling direction of the vehicle 10. The fifth region 805 is mainly projected on another part of the road surface of the traveling lane 220a located in the light distribution pattern 800 and the remaining part of the shoulder 220d. The traveling lane 220a and the road shoulder 220d in the fifth region 805 are located in front of the traveling lane 220a and the road shoulder 220d in the second region 802 in the traveling direction of the vehicle 10. The sixth region 806 is mainly projected on the remaining part of the road surface of the traveling lane 220a located in the light distribution pattern 800. The traveling lane 220a in the sixth region 806 is located in front of the traveling lane 220a in the third region 803 in the traveling direction of the vehicle 10.

In this step, when a signal indicating an instruction for blinking the left turn lamp 153 is input from the turn switch 151 to the control unit 50, the control unit 50 blinks the left turn lamp 153 and emits a pair of light. The electric power supplied to each light emitting element 33a of the unit 30 is adjusted. As a result, the amount of light emitted from each of the light emitting elements 33a is adjusted, the amount of light distribution in the light distribution pattern 800 is adjusted, and the light distribution pattern for turning left is formed. The adjustment of the amount of light will be described below.

When the left turn lamp 153 is blinking, the control unit 50 is responsible for the blinking left turn of the first region 801 and the second region 802 than when each of the turn lamps 153 is off. The pair of light emitting units 30 are controlled so that the amount of light forming the second region 802 on the lamp 153 side is increased.

When the turn lamp 153 on the left side is blinking, the vehicle 10 is in a state of turning left, the second area 802 is the area on the turning side, and the first area 801 is the area on the opposite side to the turning side. The driver's line of sight is focused on the second area 802 on the side of the blinking left turn lamp 153 of the first area 801 and the second area 802, and the driver is focused on the third area 803 and the right side that is off. Often, attention is paid to the second area 802 on the left turn lamp 153 side, which is blinking compared to the first area 801 on the turn lamp 153 side. As described above, when the left turn lamp 153 is blinking, the need for the brightness of the second region 802 on the blinking left turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when the left turn lamp 153 is blinking, the amount of light forming the second region 802 is larger than when each of the turn lamps 153 is off. .. As a result, when the vehicle 10 is turning left, the second region 802 becomes brighter than when the vehicle 10 is traveling straight.

Further, the control unit 50 forms the second region 802 on the blinking left turn lamp 153 side of the first region 801 and the second region 802 when the left turn lamp 153 is blinking. The pair of light emitting units 30 are controlled so that the amount of light is equal to or greater than the amount of light forming the third region 803. As a result, the second region 802 on the left turn lamp 153 side that is blinking becomes brighter than the third region 803. The second region 802 may be brighter than any part of the third region 803, may be brighter than the darkest portion of the third region 803, or may be brighter than the brightest portion of the third region 803. It may be brighter.

Further, when the turn lamp 153 on the left side is blinking, the control unit 50 is in the blinking turn of the fourth region 804 and the fifth region 805 than when each of the turn lamps 153 is turned off. The pair of light emitting units 30 are controlled so that the amount of light forming the fifth region 805 on the lamp 153 side is increased.

When the turn lamp 153 on the left side is blinking, the vehicle 10 is in a state of turning left, the fifth area 805 is the area on the turning side, and the fourth area 804 is the area on the opposite side to the turning side. The driver's line of sight is focused on the blinking left turn lamp 153 side of the fifth area 805 of the fourth area 804 and the fifth area 805, and the driver is on the right turn lamp 153 side that is off. Often pay attention to the fifth area 805 on the left turn lamp 153 side, which is blinking compared to the fourth area 804. As described above, when the left turn lamp 153 is blinking, the need for the brightness of the fifth region 805 on the blinking left turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when the left turn lamp 153 is blinking, the amount of light forming the fifth region 805 is larger than when each of the turn lamps 153 is off. .. As a result, when the vehicle 10 is turning left, the fifth region 805 becomes brighter than when the vehicle 10 is traveling straight.

Further, the control unit 50 forms the fourth region 804 on the right turn lamp 153 side of the fourth region 804 and the fifth region 805, which is turned off, when the left turn lamp 153 is blinking. The pair of light emitting units 30 are arranged so that the amount of light is larger than the amount of light forming the first region 801 on the right turn lamp 153 side which is turned off in the first region 801 and the second region 802. Control. The fourth region 804 may be brighter than any part of the first region 801 and may be brighter than the darkest portion of the first region 801 or the brightest portion or more of the first region 801. It may be brighter. For example, the darkest portion of the first region 801 is the left and right ends of the first region 801 and the brightest portion of the first region 801 is the central portion of the first region 801.

The fourth area 804 on the right side of the turn lamp 153 on the right side of the fourth area 804 and the fifth area 805 is the turn lamp 153 on the right side of the first area 801 and the second area 802. It is projected onto the road surface located in front of the first region 801 on the side in the traveling direction of the vehicle 10. The fourth region 804 projected in this way is desired to be brighter than the first region 801 from the viewpoint of giving a sense of security to the driver. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the left side is blinking, the amount of light forming the fourth region 804 is larger than the amount of light forming the first region 801. As a result, the fourth region 804 becomes brighter than the first region 801.

Further, the control unit 50 forms the fifth region 805 on the side of the blinking left turn lamp 153 of the fourth region 804 and the fifth region 805 when the left turn lamp 153 is blinking. The pair of light emitting units 30 are arranged so that the amount of light is larger than the amount of light forming the fourth region 804 on the left turn lamp 153 side which is turned off in the fourth region 804 and the fifth region 805. Control. The fifth region 805 may be brighter than any part of the fourth region 804, may be brighter than the darkest portion of the fourth region 804, or may be brighter than the brightest portion of the fourth region 804. It may be brighter. For example, the darkest portion of the fourth region 804 is the left and right ends of the fourth region 804, and the brightest portion of the fourth region 804 is the central portion of the fourth region 804.

Further, when the left turn lamp 153 is blinking, the driver's line of sight is the fourth region 804 on the left turn lamp 153 side of the fourth region 804 and the fifth region 805, which is turned off. Of the 4 areas 804 and the 5th area 805, the driver concentrates on the 5th area 805 on the right turn lamp 153 side that is blinking, and the driver is compared with the 4th area 804 on the left turn lamp 153 side that is off. Often pay attention to the fifth area 805 on the left turn lamp 153 side, which is blinking. As described above, when the turn lamp 153 on the left side is blinking, the need for the brightness of the fifth region 805 can be improved more than the need for the brightness of the fourth region 804. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the left side is blinking, the amount of light forming the fifth region 805 is larger than the amount of light forming the fourth region 804. As a result, the fifth region 805 becomes brighter than the fourth region 804.

Further, in the control unit 50, when the left turn lamp 153 is blinking, the amount of light forming the sixth region 806 is the blinking left turn of the fourth region 804 and the fifth region 805. The pair of light emitting units 30 are controlled so as to be larger than the amount of light forming the fifth region 805 on the lamp 153 side. The sixth region 806 may be brighter than any part of the fifth region 805, may be brighter than the darkest portion of the fifth region 805, or may be brighter than the brightest portion of the fifth region 805. It may be brighter. For example, the darkest portion of the fifth region 805 is the left and right ends of the fifth region 805, and the brightest portion of the fifth region 805 is the central portion of the fourth region 804.

In the light distribution pattern, the sixth region 806 is projected in front of the traveling lane 220a of the vehicle 10, and the fifth region 805 on the left side of the blinking left turn lamp 153 of the fourth region 804 and the fifth region 805 is Can be projected onto the shoulder. The sixth region 806 projected in this way is from the fifth region 805 on the blinking left side of the turn lamp 153 of the fourth region 804 and the fifth region 805 from the viewpoint of giving a sense of security to the driver. Is also desired to be brightened. Therefore, in the vehicle headlight 20, when the turn lamp 153 on the left side is blinking, the amount of light forming the sixth region 806 is larger than the amount of light forming the fifth region 805. As a result, the sixth region 806 becomes brighter than the fifth region 805.

Further, in the control unit 50, the amount of light forming the sixth region 806 forms the third region 803 in the case where each of the turn lamps 153 is turned off and the case where the left turn lamp 153 is blinking. The pair of light emitting units 30 are controlled so as to be less than the amount of light to be emitted.

When each of the turn lamps 153 is turned off and when the turn lamp 153 on the left side is blinking, the sixth region 806 is projected toward the front of the third region 803 in the traveling direction of the vehicle 10. As the vehicle 10 advances, the road surface is irradiated with the light forming the third region 803 and then the light forming the sixth region 806. In this case, the driver may recognize the road surface by the light forming the third region 803 before the light forming the sixth region 806. Therefore, the necessity of the brightness of the sixth region 806 becomes the necessity of the brightness of the third region 803 in the case where each of the turn lamps 153 is turned off and the case where the turn lamp 153 on the left side is blinking. Can be lower than that. Therefore, in the vehicle headlight 20, the amount of light in the sixth region 806 is the third region 803 in the case where each of the turn lamps 153 is turned off and the case where the left turn lamp 153 is blinking. Less than the amount of light in. As a result, the sixth region 806 becomes darker than the third region 803.

Further, the control unit 50 makes sure that the amount of light forming the third region 803 is the same when each of the turn lamps 153 is turned off and when the left turn lamp 153 is blinking. It controls a pair of light emitting units 30. As a result, the brightness of the third region 803 is the same when each of the turn lamps 153 is turned off and when the left turn lamp 153 is blinking.

When the amount of light is adjusted in the light distribution pattern 800 for turning left as described above, the process returns to step S3.

As described above, the vehicle headlight 20 of the present embodiment is located on each of the pair of light emitting units 30 that emit light forming a predetermined light distribution pattern and the right side and the left side in the left-right direction of the vehicle 10. A control unit 50 that controls a pair of light emitting units 30 in response to blinking of any one of the turn lamps 153 or extinguishing each of the turn lamps 153 is provided. The light distribution pattern 800 includes a first region 801 located on the right side in the left-right direction of the vehicle 10, a second region 802 located on the left side in the left-right direction of the vehicle 10, and a first region 801 and a first region 801 in the left-right direction of the vehicle 10. It is a region located between the two regions 802, and includes a third region 803 through which a straight line extending in the front-rear direction of the vehicle 10 passes through the center of the vehicle 10 in the left-right direction of the vehicle 10. When either one of the turn lamps 153 is blinking, the control unit 50 is in the blinking turn of the first region 801 and the second region 802 than when each of the turn lamps 153 is off. The pair of light emitting units 30 are controlled so that the amount of light forming the region on the lamp 153 side is large.

When either one of the turn lamps 153 is blinking, the driver's line of sight is concentrated on the area on the blinking turn lamp 153 side of the first area 801 and the second area 802, and the driver is the first. In many cases, attention is paid to the area on the turn lamp 153 side that is blinking as compared with the area 803 and the area on the turn lamp 153 side that is off. As described above, when either one of the turn lamps 153 is blinking, the necessity of the brightness of the area on the blinking turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when one of the turn lamps 153 is blinking, the area on the turn lamp 153 side is blinking more than when each of the turn lamps 153 is off. The amount of light that forms is large. When the amount of light in the area on the blinking turn lamp 153 side is large, the area on the blinking turn lamp 153 side can be brighter than in the case where the amount of light is not large, and the area on the blinking turn lamp 153 side can be brighter. Insufficient light intensity in the region can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the region on the side of the blinking turn lamp 153.

Further, when the amount of light in the region on the blinking turn lamp 153 side increases, the power consumption increases. However, since the time for turning right or the time for turning left can be shorter than the time for going straight, the increase in the amount of light in the area on the side of the blinking turn lamp 153 is smaller than the increase in the amount of light in the area when going straight. obtain. Therefore, according to the vehicle headlight 20, the power consumption can be reduced. Further, when only the amount of light in the area on the blinking turn lamp 153 side is large, the amount of light in the area on the side of the blinking turn lamp 153 and the amount of light in the area on the side of the blinking turn lamp 153 are both large. The power supplied to the light emitting unit 30 that emits the light forming the region on the side of the turn lamp 153 that is turned off can be reduced as compared with the case where. Therefore, according to the vehicle headlight 20, the power consumption can be reduced.

Further, in the vehicle headlight 20 of the present embodiment, when any one of the turn lamps 153 is blinking, the control unit 50 is blinking in the first region 801 and the second region 802. The pair of light emitting units 30 are controlled so that the amount of light forming the region on the turn lamp 153 side is equal to or greater than the amount of light forming the third region 803.

When the amount of light in the region on the blinking turn lamp 153 side becomes equal to or greater than the amount of light in the third region 803, the region on the side of the blinking turn lamp 153 becomes brighter than the third region 803 or more. When the area on the blinking turn lamp 153 side becomes brighter than the third area 803, the driver blinks as compared with the case where the area on the blinking turn lamp 153 side does not become brighter than the third area 803. It may be easier to focus on the area on the side of the turn lamp 153.

Further, in the vehicle headlight 20 of the present embodiment, the light distribution patterns are the fourth region 804 located below the first region 801 and the fifth region 805 located below the second region 802. It further includes a sixth region 806 located below the three regions 803. When either one of the turn lamps 153 is blinking, the control unit 50 is in the blinking turn of the fourth region 804 and the fifth region 805 than when each of the turn lamps 153 is off. The pair of light emitting units 30 are controlled so that the amount of light forming the region on the lamp 153 side is large.

When either one of the turn lamps 153 is blinking, the driver's line of sight is concentrated on the area on the blinking turn lamp 153 side of the fourth area 804 and the fifth area 805, and the driver is turned off. Often, attention is paid to the area on the blinking turn lamp 153 side as compared to the area on the side of the blinking turn lamp 153. As described above, when either one of the turn lamps 153 is blinking, the necessity of the brightness of the area on the blinking turn lamp 153 side can be improved as compared with the case of going straight. Therefore, in the vehicle headlight 20, when one of the turn lamps 153 is blinking, the area on the turn lamp 153 side is blinking more than when each of the turn lamps 153 is off. The amount of light that forms is large. When the amount of light in the area on the blinking turn lamp 153 side is large, the area on the blinking turn lamp 153 side can be brighter than in the case where the amount of light is not large, and the area on the blinking turn lamp 153 side can be brighter. Insufficient light intensity in the region can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the region on the side of the blinking turn lamp 153.

Further, in the vehicle headlight 20 of the present embodiment, when any one of the turn lamps 153 is blinking, the control unit 50 turns off the lights in the fourth region 804 and the fifth region 805. A pair of lights so that the amount of light forming the region on the turn lamp 153 side is larger than the amount of light forming the region on the turn lamp 153 side that is extinguished in the first region 801 and the second region 802. The light emitting unit 30 is controlled.

The area of the fourth area 804 and the fifth area 805 on the turn-off turn lamp 153 side is the vehicle 10 more than the area of the first area 801 and the second area 802 on the turn-off turn lamp 153 side. It is projected on the road surface located in front of you in the direction of travel. Of the fourth region 804 and the fifth region 805 projected in this way, the region on the turn lamp 153 side that is turned off is the region of the first region 801 and the second region 802 from the viewpoint of giving a sense of security to the driver. It is desired that the area is brighter than the area on the turn lamp 153 side where the lights are turned off. Therefore, in the vehicle headlight 20, when any one of the turn lamps 153 is blinking, a region on the turn lamp 153 side of the fourth region 804 and the fifth region 805 is formed. The amount of light is greater than the amount of light forming the extinguished turn lamp 153 side region of the first region 801 and the second region 802. In this case, the amount of light in the region on the turn lamp 153 side that is off in the fourth region 804 and the fifth region 805 is the region on the turn lamp 153 side that is off in the first region 801 and the second region 802. The foreground can be brighter than when it is not greater than the amount of light in. Therefore, the driver can easily pay attention to the front, and the driver can be given a sense of security.

Further, in the vehicle headlight 20 of the present embodiment, when any one of the turn lamps 153 is blinking, the control unit 50 is blinking in the fourth region 804 and the fifth region 805. A pair of lights so that the amount of light forming the region on the turn lamp 153 side is larger than the amount of light forming the region on the turn lamp 153 side that is extinguished in the fourth region 804 and the fifth region 805. The light emitting unit 30 is controlled.

When either one of the turn lamps 153 is blinking, the driver's line of sight is the fourth region 804 and the fourth region 804 and the fifth region 804 of the fourth region 804 and the fifth region 805 with respect to the extinguished turn lamp 153 side region. Concentrate on the area on the blinking turn lamp 153 side of the five areas 805, and the driver pays attention to the area on the blinking turn lamp 153 side compared to the area on the turn lamp 153 side that is off. Often. From the above, when either one of the turn lamps 153 is blinking, the necessity of the brightness of the area on the blinking turn lamp 153 side is the need for the brightness of the area on the turn lamp 153 side that is off. Can be better than sex. Therefore, in the vehicle headlight 20, when either one of the turn lamps 153 is blinking, the amount of light forming the area on the blinking turn lamp 153 side is extinguished. It is larger than the amount of light forming the region on the 153 side. When the amount of light in the area on the blinking turn lamp 153 side is large, the area on the blinking turn lamp 153 side can be brighter than in the case where the amount of light is not large, and the area on the blinking turn lamp 153 side can be brighter. Insufficient light intensity in the region can be suppressed. Therefore, the decrease in the visibility of the driver can be suppressed in the region on the side of the blinking turn lamp 153.

Further, in the vehicle headlight 20 of the present embodiment, when any one of the turn lamps 153 is blinking, the control unit 50 has the amount of light forming the sixth region 806 as the fourth region 804 and the fourth region 804. The pair of light emitting units 30 are controlled so as to be larger than the amount of light forming the region on the blinking turn lamp 153 side of the fifth region 805.

In the light distribution pattern 800, the sixth region 806 is projected in front of the traveling lane of the vehicle 10, and the region on the blinking turn lamp 153 side of the fourth region 804 and the fifth region 805 is adjacent to the traveling lane. Can be projected into the lane of. The sixth region 806 projected in this way is brighter than the blinking turn lamp 153 side region of the fourth region 804 and the fifth region 805 from the viewpoint of giving a sense of security to the driver. Is desired. Therefore, in the vehicle headlight 20, when either one of the turn lamps 153 is blinking, the amount of light forming the sixth region 806 blinks among the fourth region 804 and the fifth region 805. It is larger than the amount of light forming the region on the side of the turn lamp 153. In this case, the front of the traveling lane becomes brighter than the case where the amount of light in the sixth area 806 is not larger than the amount of light in the area on the blinking turn lamp 153 side of the fourth area 804 and the fifth area 805. obtain. Therefore, the driver can easily pay attention to the front, and the driver can be given a sense of security.

Further, in the vehicle headlight 20 of the present embodiment, the control unit 50 has a sixth region in the case where each of the turn lamps 153 is turned off and the case where either one of the turn lamps 153 is blinking. The pair of light emitting units 30 are controlled so that the amount of light forming the 806 is smaller than the amount of light forming the third region 803.

In the case where each of the turn lamps 153 is turned off and the case where either one of the turn lamps 153 is blinking, the sixth region 806 is projected toward the front of the third region 803 in the traveling direction of the vehicle 10. .. As the vehicle 10 advances, the road surface is irradiated with the light forming the third region 803 and then the light forming the sixth region 806. In this case, the driver may recognize the road surface by the light forming the third region 803 before the light forming the sixth region 806. Therefore, the necessity of the brightness of the sixth region 806 is the necessity of the brightness of the third region 803 in the case where each of the turn lamps 153 is turned off and the case where either one of the turn lamps 153 is blinking. It can be lower than the sex. Therefore, in the vehicle headlight 20, the amount of light in the sixth region 806 is the third in the case where each of the turn lamps 153 is turned off and the case where either one of the turn lamps 153 is blinking. Less than the amount of light in region 803. In this case, the power supplied to the light emitting unit that emits the light forming the sixth region 806 can be reduced as compared with the case where the amount of light in the sixth region 806 is not smaller than the amount of light in the third region 803. Therefore, according to the vehicle headlight 20, the power consumption can be reduced.

Further, in the vehicle headlight 20 of the present embodiment, the control unit 50 has a third region in the case where each of the turn lamps 153 is turned off and the case where either one of the turn lamps 153 is blinking. The pair of light emitting units 30 are controlled so that the amount of light forming the 803 is the same.

The brightness of the third region 803 is the same when each of the turn lamps 153 is turned off and when either one of the turn lamps 153 is blinking. Therefore, in the vehicle headlight 20, the burden on the driver's vision due to the change in brightness can be suppressed. Further, in the vehicle headlight 20, the control unit 50 applies the same electric power to the light emitting unit when each of the turn lamps 153 is off and when either one of the turn lamps 153 is blinking. You just have to supply it. Therefore, in the vehicle headlight 20, the burden on the control unit 50 can be reduced as compared with the case where the brightness changes.

Further, in the vehicle headlight 20 of the present embodiment, the control unit 50 forms the amount of light forming the first region 801 and the second region 802 when each of the turn lamps 153 is turned off. The pair of light emitting units 30 may be controlled so that the amount of light is less than the amount of light forming the third region 803.

In the light distribution pattern 800, since a straight line passes through the third region 803, the third region 803 can be projected in front of the traveling lane of the vehicle 10. When each of the turn lamps 153 is turned off, the vehicle 10 is in a straight-ahead state. The driver's line of sight is more focused on the third region 803 than on the first region 801 and the second region 802, and the driver often pays more attention to the third region 803 than on the first region 801 and the second region 802. .. As described above, when the vehicle 10 is traveling straight, the need for brightness in the first region 801 and the second region 802 may be lower than the need for brightness in the third region 803. Therefore, in the vehicle headlight 20, when each of the turn lamps 153 is turned off, the amount of light forming the first region 801 and the amount of light forming the second region 802 are the third region. It is less than the amount of light forming 803. When the amount of light in the first region 801 and the second region 802 is small, the power supplied to the light emitting unit that emits the light forming the first region 801 and the second region 802 is reduced as compared with the case where the amount of light is not small. Can be done. Therefore, according to the vehicle headlight 20, the power consumption can be reduced. Also, the vehicle 10 may travel straight ahead rather than turning right or left. Therefore, according to the vehicle headlight 20, the power consumption can be further reduced by reducing the electric power when traveling straight, rather than reducing the electric power when turning right or left.

In the above, the control of the amount of light has been described using the first region 801 and the second region 802 and the third region 803, but the control of the amount of light in the fourth region 804, the fifth region 805 and the sixth region 806 is also the same. Is. Similar to the first region 801 and the second region 802 and the third region 803, when the vehicle 10 is traveling straight, the need for the brightness of the fourth region 804 and the fifth region 805 is the brightness of the sixth region 806. It can be less than the need for. Therefore, in the vehicle headlight 20, the control unit 50 determines the amount of light forming the fourth region 804 and the light forming the fifth region 805 when each of the turn lamps 153 is turned off. The pair of light emitting units 30 may be controlled so that the amount of light is less than the amount of light forming the sixth region 806. When the amount of light in the fourth region 804 and the fifth region 805 is small, the power supplied to the light emitting unit that emits the light forming the fourth region 804 and the fifth region 805 is reduced as compared with the case where the light amount is not small. Can be done. Therefore, according to the vehicle headlight 20, the power consumption can be reduced.

Although the present invention has been described above by exemplifying the above embodiments, the present invention is not limited thereto.

The configuration of one light emitting unit 30a is the same as the configuration of the other light emitting unit 30b, but may be different from the configuration of the other light emitting unit 30b. The configuration of one light emitting unit 30a and the other light emitting unit 30b is not particularly limited. Further, for example, one light emitting unit 30a and the other light emitting unit 30b may be a parabolic light emitting unit, a projector type light emitting unit, a direct lens type light emitting unit, or the like.

The captured image may be at least one of a moving image and a still image.

The width of each of the first region 801 and the second region 802, the fourth region 804, and the fifth region 805 may be the same as the width of the third region 803, or smaller than the width of the third region 803. You may. The widths of the first region 801 and the second region 802, the third region 803, the fourth region 804, the fifth region 805, and the sixth region 806 are the widths of the light distribution pattern 800 evenly divided into three. It is a length, and the width of the light distribution pattern 400 may be larger than the width of each region of the light distribution pattern 800 evenly divided into three. The control unit 50 may control the pair of light emitting units 30 so that the width of the light distribution pattern 400 is larger than the width of the third region 803.

The light distribution pattern 800 may be divided into at least three or more regions in the left-right direction of the vehicle 10.

When either one of the turn lamps 153 is blinking, the control unit 50 is in the blinking turn of the first region 801 and the second region 802 than when each of the turn lamps 153 is off. The light emitting unit 30 may be controlled so that the amount of light of at least a part of the light forming the region on the lamp 153 side is increased.

Further, when any one of the turn lamps 153 is blinking, the control unit 50 is at least light that forms a region on the blinking turn lamp 153 side of the first region 801 and the second region 802. The light emitting unit 30 may be controlled so that a part of the light amount is equal to or more than at least a part of the light amount forming the third region 803.

Further, when either one of the turn lamps 153 is blinking, the control unit 50 blinks in the fourth area 804 and the fifth area 805 than when each of the turn lamps 153 is turned off. The light emitting unit 30 may be controlled so that the amount of light of at least a part of the light forming the region on the side of the turn lamp 153 is large.

Further, when any one of the turn lamps 153 is blinking, the control unit 50 has at least the light forming the extinguished turn lamp 153 side region of the fourth region 804 and the fifth region 805. The light emitting unit 30 is controlled so that a part of the light amount is larger than the light amount of at least a part of the light forming the region on the turn lamp 153 side which is extinguished in the first region 801 and the second region 802. You may.

Further, when any one of the turn lamps 153 is blinking, the control unit 50 is at least light that forms a region on the blinking turn lamp 153 side of the fourth region 804 and the fifth region 805. The light emitting unit 30 is controlled so that a part of the light amount is larger than the light amount of at least a part of the light forming the region on the turn lamp 153 side which is extinguished in the fourth region 804 and the fifth region 805. You may.

Further, when one of the turn lamps 153 is blinking, the control unit 50 blinks at least a part of the light forming the sixth region 806 among the fourth region 804 and the fifth region 805. The light emitting unit 30 may be controlled so as to have a larger amount of light than at least a part of the light forming the region on the side of the turn lamp 153.

Further, in the control unit 50, when each of the turn lamps 153 is turned off and when either one of the turn lamps 153 is blinking, the amount of light of at least a part of the light forming the sixth region 806 is reduced. The light emitting unit 30 may be controlled so as to be less than the amount of light of at least a part of the light forming the third region 803.

Further, in the control unit 50, when each of the turn lamps 153 is turned off and when either one of the turn lamps 153 is blinking, the amount of light of at least a part of the light forming the third region 803 is reduced. The light emitting unit 30 may be controlled so as to be the same.

Further, when any one of the turn lamps 153 is blinking, the control unit 50 is in a region opposite to the blinking turn lamp 153 side region of the first region 801 and the second region 802. The light emitting unit 30 may be controlled so that the amount of light of at least a part of the light forming the lamp 153 is as follows when each of the turn lamps 153 is turned off. Here, although the description has been made using the first region 801 and the second region 802, the control unit 50 determines the amount of light in the fourth region 804 and the fifth region 805, similarly to the first region 801 and the second region 802. You may control it.

The control unit 50 simultaneously adjusts the amount of light of at least a part of the light forming the first region 801 and the second region 802, the fourth region 804, the fifth region 805, and the sixth region 806 as described above. As such, the light emitting unit 30 may be controlled. Further, the control unit 50 sets the light emitting unit 30 so that at least a part of the light forming the extinguished turn lamp 153 side region of the first region 801 and the second region 802 becomes zero. You may control it. Here, although the description has been made using the first region 801 and the second region 802, the control unit 50 determines the amount of light in the fourth region 804 and the fifth region 805, similarly to the first region 801 and the second region 802. You may control it.

The control unit 50 may control the light emitting unit 30 so that the light amount distribution in the third region 803 becomes uniform. Here, although the description has been made using the third region 803, the control unit 50 may control the light emitting unit 30 so that the light amount distribution becomes uniform in the other regions as well as the third region 803. ..

The control unit 50 is a light emitting unit so that the amount of light in the blinking turn lamp 153 side region of the first region 801 and the second region 802 increases as the distance from the third region 803 increases in the left-right direction of the vehicle 10. 30 may be controlled. The control unit 50 is a light emitting unit so that the amount of light in the extinguished turn lamp 153 side region of the first region 801 and the second region 802 decreases as the distance from the third region 803 increases in the left-right direction of the vehicle 10. 30 may be controlled. Here, the first region 801 and the second region 802 have been described, but the control unit 50 controls the amount of light in the fourth region 804 and the fifth region 805 as in the first region 801 and the second region 802. You may. The control unit 50 makes the darkest portion of the first region 801 and the second region 802 on the blinking turn lamp 153 side brighter than the darkest portion of the third region 803, or the third region 803. The light emitting unit 30 may be controlled so as to be brighter than the brightest portion. The darkest portion of the first region 801 and the second region 802 on the blinking turn lamp 153 side is, for example, a portion adjacent to the end of the third region 803 in the region.

As described above, the control unit 50 is in the first region 801 and the second region 802 when either one of the turn lamps 153 is blinking, as compared with the case where each of the turn lamps 153 is turned off. The light emitting unit 30 is controlled so that the amount of light forming the region on the blinking turn lamp 153 side is increased. The amount of light forming the region on the blinking turn lamp 153 side may be gradually increased or may be gradually increased.

When the amount of light gradually increases, the sharp increase in the amount of light is suppressed. Therefore, according to the vehicle headlight 20 of the present embodiment, it is possible to suppress a decrease in visibility of the driver of the own vehicle due to a steep increase. Further, according to the vehicle headlight 20, the driver of the own vehicle may naturally become accustomed to the brightness in front of the vehicle 10 as compared with the case where the amount of light does not gradually increase. Therefore, according to the vehicle headlight 20, it is possible to suppress a decrease in visibility of the driver of the own vehicle. In the vehicle headlight 20, the rate of change in the amount of light that increases is constant, but even if the control unit 50 controls the light emitting unit 30 so that the rate of change changes in the middle of the predetermined period. good.

When the amount of light increases stepwise, the control unit 50 may control the light emitting unit at the timing when the amount of light increases stepwise. Therefore, the burden on the control unit 50 can be reduced as compared with the case where the amount of light does not increase stepwise.

Here, the light intensity in the blinking turn lamp 153 side region of the first region 801 and the second region 802 has been described, but the control unit 50 has described the first region 801 and the second region 802. The amount of light in the other area may be controlled in the same manner as the amount of light in the area on the side of the blinking turn lamp 153.

The control unit 50 may increase the amount of light in the blinking turn lamp 153 side region as the steering angle in the travel information increases. The smaller the steering angle, the closer the vehicle 10 is to the state of going straight. Therefore, the control unit 50 may reduce the amount of light in the blinking turn lamp 153 side region as the steering angle becomes smaller.

The light distribution pattern 800 may further have a seventh region located above the first region 801 and an eighth region located above the second region 802. The seventh region is located on the right side of the light distribution pattern 400, and the eighth region is located on the right side of the light distribution pattern 400. The control unit 50 may control the amount of light in the seventh region and the amount of light in the eighth region in the same manner as the amount of light in the first region and the amount of light in the second region. For example, in the control unit 50, when each of the turn lamps 153 is turned off, the amount of light of at least a part of the light forming the seventh region and the amount of light of at least a part of the light forming the eighth region are the third. The amount of light that forms the region 803 is less than that of at least a part of the light, and when one of the turn lamps 153 is blinking, the seventh region and the case where each of the turn lamps 153 is turned off The light emitting unit 30 may be controlled so that the amount of light of at least a part of the light forming the region on the blinking turn lamp 153 side of the eighth region is increased. Further, when any one of the turn lamps 153 is blinking, the control unit 50 is at least a part of the light forming the blinking turn lamp 153 side region of the seventh region and the eighth region. The light emitting unit 30 may be controlled so that the amount of light of the light emitting unit 30 is equal to or more than the amount of light of at least a part of the light forming the third region 803. Further, when any one of the turn lamps 153 is blinking, the control unit 50 is at least a part of the light forming the blinking turn lamp 153 side region of the seventh region and the eighth region. The light emitting unit 30 may be controlled so that the amount of light in the first region 801 and the second region 802 is equal to or greater than the amount of light forming at least a part of the light forming the region on the blinking turn lamp 153 side. ..

The control unit 50 makes the entire lower edge of the light distribution pattern 400 in contact with a part of the upper edge of the first region 801 and a part of the upper edge of the second region 802 and the entire upper edge of the third region 803. The light emitting unit 30 may be controlled.

The control of the amount of light in the state where the vehicle 10 is traveling on the general road 220 has been described using the low beam light distribution pattern 800, but the high beam light distribution pattern may be controlled in the same manner as the light distribution pattern 800. good.

Although low beam and overhead sine light are emitted, only low beam may be emitted.

As described above, according to the present invention, there is provided a headlight for a vehicle capable of suppressing a decrease in visibility of a driver, and the headlight for a vehicle is the field of a headlight for a vehicle such as an automobile. Available at.

10 ... Vehicle 20 ... Vehicle headlight 30 ... Light emitting unit 50 ... Control unit 60 ... Recording unit 100 ... Detection device

Claims (9)

A light emitting unit that emits light that forms a predetermined light distribution pattern,
A control unit that controls the light emitting unit in response to blinking of either one of the turn lamps located on the right side and the left side in the left-right direction of the vehicle or turning off each of the turn lamps.
Equipped with
The light distribution pattern is
A first region located on the right side of the vehicle in the left-right direction,
A second region located on the left side of the vehicle in the left-right direction,
A third region located between the first region and the second region in the left-right direction of the vehicle, and a straight line extending in the front-rear direction of the vehicle passing through the center of the vehicle in the left-right direction of the vehicle. Area and
Including
When either one of the turn lamps is blinking, the control unit is blinking in the first region and the second region than when each of the turn lamps is off. A vehicle headlight characterized by controlling the light emitting unit so that the amount of light of at least a part of the light forming the region on the turn lamp side is increased. When either one of the turn lamps is blinking, the control unit is at least a part of the light forming the blinking region on the turn lamp side of the first region and the second region. The vehicle headlight according to claim 1, wherein the light emitting unit is controlled so that the amount of light of the headlight is equal to or greater than the amount of light of at least a part of the light forming the third region. The light distribution pattern is
The fourth region located below the first region and
The fifth region located below the second region and
The sixth region located below the third region and
Including
When either one of the turn lamps is blinking, the control unit is blinking in the fourth region and the fifth region than when each of the turn lamps is off. The vehicle headlight according to claim 1 or 2, wherein the light emitting unit is controlled so that the amount of light of at least a part of the light forming the region on the turn lamp side is increased. When either one of the turn lamps is blinking, the control unit is at least a part of the light forming the extinguished region on the turn lamp side of the fourth region and the fifth region. The light emitting unit is controlled so that the amount of light of the light emitting unit is larger than the amount of light of at least a part of the light forming the extinguished region on the turn lamp side of the first region and the second region. The vehicle headlight according to claim 3. When either one of the turn lamps is blinking, the control unit is at least a part of the light forming the blinking region on the turn lamp side of the fourth region and the fifth region. The light emitting unit is controlled so that the amount of light of the fourth region and the fifth region is larger than the amount of light of at least a part of the light forming the extinguished region on the turn lamp side. The vehicle headlight according to claim 3 or 4. When either one of the turn lamps is blinking, the control unit blinks at least a part of the light forming the sixth region in the fourth region and the fifth region. The vehicle according to any one of claims 3 to 5, wherein the light emitting unit is controlled so as to have a light amount larger than at least a part of the light forming the region on the turn lamp side. Headlight. In the control unit, when each of the turn lamps is off and when either one of the turn lamps is blinking, the amount of light of at least a part of the light forming the sixth region is the first. The vehicle headlight according to any one of claims 3 to 6, wherein the light emitting unit is controlled so that the amount of light is less than at least a part of the light forming the three regions. The control unit has the same amount of light as at least a part of the light forming the third region when each of the turn lamps is turned off and when either one of the turn lamps is blinking. The vehicle headlight according to any one of claims 1 to 7, wherein the light emitting unit is controlled so as to be. The vehicle headlight according to any one of claims 1 to 8, wherein the light forming the light distribution pattern is a low beam.

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