JP2006096158A - Light distribution controlling device for vehicle headlight - Google Patents

Light distribution controlling device for vehicle headlight Download PDF

Info

Publication number
JP2006096158A
JP2006096158A JP2004284238A JP2004284238A JP2006096158A JP 2006096158 A JP2006096158 A JP 2006096158A JP 2004284238 A JP2004284238 A JP 2004284238A JP 2004284238 A JP2004284238 A JP 2004284238A JP 2006096158 A JP2006096158 A JP 2006096158A
Authority
JP
Japan
Prior art keywords
headlight
light distribution
vehicle
distribution control
irradiation range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004284238A
Other languages
Japanese (ja)
Inventor
Masaaki Fukuhara
Tatsuhiko Moji
雅明 福原
竜彦 門司
Original Assignee
Hitachi Ltd
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, 株式会社日立製作所 filed Critical Hitachi Ltd
Priority to JP2004284238A priority Critical patent/JP2006096158A/en
Publication of JP2006096158A publication Critical patent/JP2006096158A/en
Pending legal-status Critical Current

Links

Images

Abstract

A light distribution control device that realizes an optimal light distribution pattern for a driver without depending on a movable part is provided.
A first headlight having an optical axis substantially parallel to a straight traveling direction of a vehicle and capable of controlling an irradiation range by controlling the amount of light, and a first headlight having an irradiation range outside the irradiation range of the first headlight. It has two headlights. By controlling the irradiation range of the first headlight, a light distribution pattern equivalent to the conventional low beam headlight is realized. On the other hand, the irradiation range of the second headlight has a wide angle in the horizontal direction with the optical axis facing the outside of the center of the vehicle as compared with the conventional low beam.
[Selection] Figure 8

Description

  The present invention relates to a light distribution control device for a headlight that irradiates the front of a vehicle.

  In recent years, research on night vision and light distribution control, etc., for ensuring visibility of drivers at night has been advanced. The light distribution control is described in Japanese Patent Laid-Open No. 2002-289013.

JP 2002-289013 A

  The above conventional light distribution control system is provided with a movable part on the reflection surface inside the headlight to secure the driver's field of view when entering a corner, etc. The reflecting surface is moved to change the light distribution pattern to an optimum one. However, since this system has a movable part, there has been a concern about an increase in cost and a decrease in reliability due to mechanical parts of the movable part.

  The present invention has been made to solve the above-described problems of the prior art, and an object thereof is to provide a light distribution control device that realizes an optimal light distribution pattern for a driver without using a movable part. .

  In order to achieve the above object, a first headlight that can control the irradiation range of the headlight by controlling the amount of light, and a second headlight that has an irradiation range outside the host vehicle than a conventional low beam (passing headlight) With headlights. The second headlight has larger θWL and θWR than the conventional low beam. The first headlight and the second headlight are respectively composed of left and right lights, and each light can control the irradiation range independently by controlling the amount of light.

  The vehicle headlight light distribution control device of the present invention has a curve detection means, and adaptively controls the irradiation range of the second headlight or both the first headlight and the second headlight when detecting the curve. Control. The curve detection means can detect a curve based on the steering angle of the steering. The curve detection means includes a camera and an image processing unit, and can detect a curve by processing video from the camera with the image processing unit. Specifically, it is configured to perform curve detection by recognizing a road marking on the road from a camera image, or to perform curve detection by recognizing a white line on the road. Or the information of the road condition of a navigation system is taken in and a curve detection is performed.

  The vehicle headlight light distribution control device of the present invention also has vehicle detection means, and adapts the irradiation range of the first headlight or both the first headlight and the second headlight when detecting the vehicle. Control.

  The light distribution control device according to the present invention controls the irradiation range of the first headlight on a straight road and reduces the irradiation distance when there is a preceding vehicle or an oncoming vehicle, as disclosed in Japanese Patent Application Laid-Open No. 2004-161082. Perform light control. On the curved road, the irradiation range of the second headlight is controlled to ensure a bright view of the driver.

  The vehicle light distribution control device according to the present invention includes a first headlight including left and right lights having an optical axis substantially parallel to a straight traveling direction of the vehicle and capable of controlling an irradiation range by controlling the amount of light. Headlight controller for controlling the second headlight consisting of left and right lights that have an irradiation range outside the headlight irradiation range and can control the irradiation range by controlling the amount of light, and vehicle speed detection for detecting the vehicle speed of the host vehicle Means, vehicle detection means for detecting the presence or absence of a preceding vehicle and / or oncoming vehicle and the distance from the host vehicle, a signal from the curve detection means for acquiring the curve information of the travel path, and calculating an appropriate light distribution pattern, A light distribution control arithmetic device that sends a control signal to the headlight controller, and the headlight controller responds to the control signal sent from the light distribution control arithmetic device. Te, a switch means for controlling current independently to flow from the power source to the left and right lights of the left and right light and the second headlight of the first headlight.

  According to the present invention, the first headlight that has an optical axis substantially parallel to the straight traveling direction of the vehicle and can control the irradiation range by controlling the amount of light combines the conventional low beam distribution pattern and the high beam distribution pattern. On the other hand, the light distribution pattern in the traveling direction when traveling on a curve, etc. is realized by the second headlight whose optical axis is outside the center of the vehicle and whose irradiation range is wide in the horizontal direction. Since the optical axis of the light can be fixed, there is no need for a moving part, and a light distribution control device with low cost and excellent reliability can be provided.

  FIG. 1 is a diagram showing a configuration example of a light distribution control system for a vehicle headlight according to the present invention. The system includes a vehicle speed detection unit 101, a curve detection unit 102, a vehicle detection unit 103, a light distribution control unit 104, and a headlight unit 105.

  The vehicle speed detecting means 101 is means for detecting information of the vehicle speed sensor 110 of the vehicle via CAN (in-vehicle network) or the like. The curve detection unit 102 includes a steering angle sensor 111, a navigation system 112, and a camera 113. Information of the steering angle sensor 111 can be detected via CAN (in-vehicle network) or the like.

  If the navigation system 112 is used, as shown in the conceptual diagram of FIG. That is, the navigation system 112 acquires the current position information of the host vehicle by the GPS 122 and displays a mark representing the host vehicle at a corresponding position on the map information 121. Therefore, by analyzing the image of the shape of the road at the mark position representing the host vehicle on the map information, whether the current road is a straight line, a right curve, a left curve, a curve It is possible to acquire information such as the radius of curvature.

  The camera 113 has an image processing device. When an image including a road sign 301 and a road sign 302 is projected as shown in FIG. 3A, the image is shown in FIG. It is possible to detect the road marking 301 and the road sign 302, and when the image of the traveling road as shown in FIG. 4A is displayed, the white line 303 is detected from the image as shown in FIG. 4B. Is possible. By analyzing the detected road marking 301, road sign 302, or white line information, knowledge about the curve can be obtained.

  The vehicle detection means 103 includes a camera 113 and a radar 114. The camera 113 detects the distance and position from the own vehicle to the preceding vehicle and the oncoming vehicle from the density information of the image. The camera 113 may be used in combination with that of the curve detection means 102. For example, when there is a preceding vehicle, the camera 113 can capture the image as shown in FIG. 5A, but the red light is extracted by image processing to extract the tail lamp 211 of the preceding vehicle 210 as shown in FIG. 5B. The distance to the preceding vehicle 210 can be detected by measuring the distance between the left and right tail lamps. The radar 114 is a device that detects a preceding vehicle or an oncoming vehicle, such as a laser radar or a millimeter wave radar, and compensates for a decrease in detection of the oncoming vehicle or the preceding vehicle during bad weather, which is a weak point of the camera 113.

  The headlight unit 105 includes four headlights: a first headlight (right) 117, a first headlight (left) 118, a second headlight (right) 119, and a second headlight (left) 120. Consists of Each of the first headlight and the second headlight includes a pair of left and right headlights.

  FIG. 6A is an external view of the first headlight and the second headlight installed at the front part of the vehicle, and FIG. 6B is an enlarged view of the headlight part at the left front part of the vehicle. It is an enlarged view. The first headlight (right) 117 and the first headlight (left) 118 have the optical axis and irradiation range of a so-called high beam headlight (traveling headlamp). The second headlight (right) 119 and the second headlight (left) 120 irradiate the approach direction of the curve, and the optical axes directed outward from the optical axes of the first headlights 117 and 118 are arranged. Have.

  FIGS. 7A and 7B are explanatory diagrams of the optical axis and irradiation range of the first headlight (right) 117 and the first headlight (left) 118. The first headlight (right) 117 and the first headlight (left) 118 have the optical axis of the headlight for traveling (an optical axis substantially parallel to the straight traveling direction of the vehicle), and control the amount of light. Thus, a conventional high beam light distribution pattern as shown in FIG. 7A or a conventional low beam light distribution pattern as shown in FIG. 7B can be obtained. The light amounts of the left and right headlights 117 and 118 can be controlled independently. For example, the right headlight 117 is a conventional low beam light distribution pattern, and the left headlight 118 is a conventional high beam light distribution pattern. It is also possible to do.

  FIG. 8 is an explanatory diagram of the second headlight, FIG. 8 (a) is an explanatory diagram showing the optical axis of the second headlight, and FIG. 8 (b) is an explanation showing the irradiation angle of the second headlight. FIG. The second headlight (right) 119 has an optical axis angle θR and an irradiation angle θWR, and the second headlight (left) 120 has an optical axis angle θL and an irradiation angle θWL.

  Although there are a pair of left and right headlights, the left and right headlights will be described here because the left and right headlights can be described in the same way. The optical axis angle θL is a horizontal angle formed by the optical axis F of the second headlight (left) 120 and the Z direction of the traveling direction of the host vehicle. The optical axis angle θL of the second headlight (left) 120 is larger than a so-called low beam headlight (passing headlight), and the irradiation angle θWL is also large. The second headlight (right) 119 and the second headlight (left) 120 can have a light distribution pattern that irradiates far away as shown in FIG. As shown in FIG. 8B, a light distribution pattern that irradiates the vicinity of the host vehicle may be used. In addition, the right and left headlights 119 and 120 can independently control the amount of light. For example, it is possible to realize a light distribution pattern in which only the right headlight 119 is irradiated far away.

  Furthermore, a first headlight (right) 117 and a first headlight (left) 118 that can independently control the amount of light, and a second headlight that can also independently control the amount of light. By combining the (right) 119 and the second headlight (left) 120, various light distribution patterns can be realized.

  Here, the optical axis θL and the irradiation angle θWL of the second headlight will be described with reference to FIGS. 9A to 9D.

  The optical axis θL and the irradiation angle θWL of the second headlight are the optical axis θL and the irradiation angle θWL necessary for the vehicle to have an irradiation range A in which the curve of the outer periphery R is irradiated to the L point. In the figure, WC is the vehicle width of the host vehicle 200, WL is the lane width, m is the distance from the center of the host vehicle to the second headlight (left) 120, and Z1 is the second headlight (left) 120. The optical axis, Z2 is the optical axis of the first headlight (left) 118, A is the irradiation range of the second headlight (left) 120, B is the irradiation range of the first headlight (left) 118 is there.

The optical axis θL can be obtained by the following equation (1).
θL = 90 ° -tan -1 (Y1 / X1) (1)

Here, X1 can be obtained from the following equation.
X1 = R-X2-Wc / 2-m,
X2 = Rcosθ1
θ1 = L × 360 / 2πR

Y1 can be obtained from the following equation.
Y1 = √ (R 2 -X2 2 )

  The irradiation angle θW may be an angle that can fill the space between the irradiation range B of the first headlight with the optical axis θL as the center.

  The light distribution control unit 104 includes a light distribution control arithmetic device 115 and a headlight controller 116. The light distribution control calculation device 115 is constituted by a microcomputer, a memory, and the like, calculates an optimal light distribution pattern from detection information obtained from the vehicle speed detection means 101, the curve detection means 102, and the vehicle detection means 103, and a headlight controller 116. A control signal for controlling the headlight unit 105 is sent to the projector.

  The headlight controller 116 includes switching elements such as four FETs 123 as illustrated in FIG. By controlling the currents flowing through the four headlights 117 to 120 from the control signal supplied from the light distribution control arithmetic unit 115, the light amount of each of the four headlights is controlled independently. Since the brightness is adjusted by the electric current, mechanical parts for adjusting the optical axis are not required. For example, in the case of the first headlight (right) 117 and the first headlight (left) 118, when the current value is maximized, irradiation is performed up to 100 m ahead (equivalent to a high beam) as shown in FIG. In the case where the current value is reduced, as shown in FIG. 7B, it can be irradiated up to 40 m (equivalent to a low beam).

  An example of a control method by the vehicle headlight light distribution control system according to the present invention will be described with reference to flowcharts 11 and 12. This logic is started when the driver turns on the light switch or when the illuminance sensor detects the illuminance and turns on the light.

  First, referring to FIG. 11, in step S11, the steering angle θ is taken. Proceeding to step S12, when the steering angle θ is larger than the set value x, the process proceeds to the curve detection process of step S13. As the set value x, a value regarded as entering the curve is set in advance based on experimental results and the like. If the steering angle θ is smaller than the set value x in the determination in step 12, the traveling route is regarded as a straight road, and the process proceeds to step S14.

  If the steering angle θ is smaller than the set value x, the vehicle speed is taken in at step S14. By taking in the vehicle speed, it is effective for the driver to irradiate as far as possible when the vehicle speed is high, and to provide a wider range of irradiation when the vehicle speed is low. Light control can be performed. The process proceeds to the logic of detecting the distance to the preceding vehicle 210 and the oncoming vehicle 220 in step S15.

  In this logic, the distance to the preceding vehicle 210 and the oncoming vehicle 220 is detected based on the image data. Next, in step S16, the light amount control amount of the first headlight is calculated. If there is no preceding vehicle 210 or oncoming vehicle 220, the DUTY of the FET 123 is set to 100% and the light is turned on at the same irradiation distance as the high beam headlamp as shown in FIG. As shown in FIG. 14A, when there is a preceding vehicle 210 and an oncoming vehicle 220, the irradiation distance is set according to the distance to the preceding vehicle 210 and the oncoming vehicle 220.

  If the steering angle θ is larger than the set value x in the determination in step S12, the process proceeds to the curve detection process in step 13. In the curve detection processing, as shown in FIG. 12, in step S21, image data is captured by the camera, and white line data is extracted in step S22. Subsequently, the process proceeds to step 23, where the curve curvature radius is calculated from the degree of curve of the white line. In addition to this, it is also possible to estimate a curve by recognizing from a road sign or a road sign from image data.

  The reason for checking the curve again with the camera is that if the light distribution is controlled only by the steering angle of the steering wheel, the brightness of the left and right lights changes frequently, which is bothersome for the driver of the own vehicle, the preceding vehicle 210, and the oncoming vehicle 220. This is because there is a risk of giving a sense of security. Further, it may be impossible to accurately detect the radius of the curve only with the road marking 301, the road sign 302, and the white line 303 information. In particular, when the curve of the white line is steep, the road picture does not fit in the angle of view as shown in FIG. 13, and it is even difficult to detect the white line 303 (because the white lines on both sides cannot be detected). Therefore, the navigation map data 121 is read in step S24, and the curve radius is calculated. The output of this process is the presence or absence of the curve and the radius of the curve. In addition, information indicating that there is a curve in the course to be advanced in the future can be detected earlier than the means for detecting the curve from the steering angle or the curvature of the white line based on the road marking detection and the road sign detection by the camera 113. This is because they are displayed several tens of meters before the actual curve approach.

  By combining this detection result with the information of the navigation map data 121, the presence / absence of the curve and the radius can be detected more accurately. The light intensity values of the first headlight and the second headlight are determined from the vehicle speed data in step S14, the preceding vehicle in step S15, and the oncoming vehicle detection result, and light distribution control in the curve is performed.

  An example of the operation of the light distribution control system of the present invention will be described with reference to FIG. FIG. 14A shows a case where the steering angle θ is smaller than x in step S12 and a straight road is assumed. In this case, the second headlight is not turned on. In addition, the first headlights 117 and 118 adjust the amount of light so that the irradiation distance is in accordance with the distance to the preceding vehicle 210 and the oncoming vehicle 220. In this way, the light distribution patterns 203 and 204 by the first headlights 117 and 118 ensure the visibility of the driver of the host vehicle 200 without affecting the preceding vehicle 210 and the oncoming vehicle 220.

  FIG. 14B shows a light distribution pattern that is controlled by the light distribution control means when the steering angle θ is larger than x and detected as a curve in step S12. In the case of the figure, since it is a right curve, the second headlight (right) 119 is turned on, the curve traveling direction is irradiated by the light distribution pattern 201 by the second headlight (right) 119, and the driver's field of view is Secure. Similarly to the case of a straight road, when an oncoming vehicle or a preceding vehicle is detected, the second headlight (right) 119 is turned off or the FET 123 is controlled to control the second headlight by controlling the amount of light. Control is performed so that the irradiation distance of the light (right) 119 becomes an irradiation distance corresponding to the distance to the preceding vehicle or the oncoming vehicle. The same control is performed when driving on the left curve.

The figure which shows the structural example of the light distribution control system of the headlight for vehicles. The conceptual diagram of a navigation system. The figure which shows the example of a process of the image | video with a road marking and a road sign. The figure which shows the example of a process of an image | video with a white line. The figure which shows the example of a process of an image | video with a preceding vehicle. FIG. 3 is an external view of a first headlight and a second headlight. Explanatory drawing of the optical axis and irradiation range of a 1st headlight. Explanatory drawing of the optical axis and irradiation range of a 2nd headlight. Explanatory drawing of optical axis (theta) L and irradiation angle (theta) WL of a 2nd headlight. Explanatory drawing of a headlight controller. The flowchart which shows the example of the control method by the light distribution control system of the headlight for vehicles by this invention. The flowchart of a curve detection process. The figure which shows the example of the image | video of a white line non-detection. Explanatory drawing of the operation example of the light distribution control system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 ... Vehicle speed detection means 102 ... Curve detection means 103 ... Vehicle detection means 104 ... Light distribution control means 105 ... Headlight part 110 ... Vehicle speed sensor 111 ... Steering angle sensor 112 ... Navigation system 113 ... Camera 114 ... Radar 115 ... Light distribution control Arithmetic unit 116 ... headlight controller 117 ... first headlight (right)
118 ... First headlight (left)
119 ... Second headlight (right)
120 ... Second headlight (left)
121 ... Navi map data 122 ... GPS
123 ... FET
200 ... Own vehicle 201 ... Second headlight (right) light distribution pattern 203 ... First headlight (right) light distribution pattern 204 ... First headlight (left) light distribution pattern 210 ... Preceding vehicle 220 ... Oncoming vehicle 301 ... Road marking 302 ... Road sign 303 ... White line

Claims (15)

  1. A first headlight having an optical axis substantially parallel to the straight direction of the vehicle and capable of controlling the irradiation range by controlling the amount of light;
    A second headlight having an irradiation range outside the irradiation range of the first headlight;
    A light distribution control device for a vehicle headlight, comprising: a light distribution control means for controlling light amounts of the first headlight and the second headlight.
  2.   The light distribution control device according to claim 1, wherein the second headlight has a wider angle than an irradiation range of the first headlight.
  3.   2. The light distribution control device according to claim 1, wherein the optical axis of the second headlight is directed to the outside of the host vehicle from the optical axis of the first headlight. Light control device.
  4.   The light distribution control device according to any one of claims 1 to 3, wherein the second headlight is capable of controlling an irradiation range by controlling an amount of light. .
  5.   5. The light distribution control device according to claim 1, wherein each of the first headlight and the second headlight includes left and right headlights, and the first headlight and / or the second headlight. The headlight light distribution control device for a vehicle is characterized in that the irradiation range of the headlight can be controlled independently on the left and right sides.
  6.   6. The light distribution control device according to claim 1, further comprising a curve detection unit, wherein the light distribution control unit changes a headlight to be turned on at the time of curve detection from the first headlight. A light distribution control device for a vehicle headlight, wherein the light distribution control device switches to a second headlight.
  7.   The light distribution control device according to any one of claims 1 to 5, further comprising a curve detection unit, wherein the light distribution control unit is an irradiation range of the second headlight at the time of detecting a curve, or the first A light distribution control device for a headlight for a vehicle, which controls an irradiation range of the headlight and the second headlight.
  8.   The light distribution control device according to claim 1, further comprising a vehicle detection unit, wherein the light distribution control unit is an irradiation range of the first headlight at the time of vehicle detection, or the first A light distribution control device for a headlight for a vehicle, which controls an irradiation range of the headlight and the second headlight.
  9.   8. The light distribution control device according to claim 6 or 7, wherein the curve detection means detects a curve based on a steering angle of a steering wheel.
  10.   8. The light distribution control device according to claim 6, wherein the curve detection unit includes a camera and an image processing unit, and performs curve detection by processing an image of the camera by the image processing unit. Light distribution control device for vehicle headlights.
  11.   The light distribution control device according to claim 10, wherein the image processing unit recognizes a road marking on a road from an image of the camera and detects a curve.
  12.   The light distribution control device according to claim 10, wherein the image processing unit recognizes a white line on a road from the video of the camera and detects a curve.
  13.   11. The light distribution control device according to claim 10, wherein the image processing unit recognizes a road sign from the video of the camera and detects a curve.
  14.   8. The light distribution control device according to claim 6 or 7, wherein the curve detection means takes in road condition information of a navigation system and performs curve detection.
  15. A first headlight consisting of left and right lights having an optical axis substantially parallel to the vehicle's straight traveling direction and capable of controlling the irradiation range by controlling the amount of light, and having an irradiation range outside the irradiation range of the first headlight A headlight controller for controlling the second headlight consisting of left and right lights that can control the irradiation range by controlling
    In response to signals from vehicle speed detection means for detecting the vehicle speed of the host vehicle, vehicle detection means for detecting the presence / absence of a preceding vehicle and / or oncoming vehicle and the distance from the host vehicle, and curve detection means for acquiring curve information of the travel path A light distribution control calculation device that calculates an appropriate light distribution pattern and sends a control signal to the headlight controller;
    The headlight controller, according to a control signal sent from the light distribution control arithmetic unit, supplies a current to flow from the power source to the left and right lights of the first headlight and the left and right lights of the second headlight. A vehicle light distribution control device comprising switch means for independently controlling each of them.
JP2004284238A 2004-09-29 2004-09-29 Light distribution controlling device for vehicle headlight Pending JP2006096158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004284238A JP2006096158A (en) 2004-09-29 2004-09-29 Light distribution controlling device for vehicle headlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004284238A JP2006096158A (en) 2004-09-29 2004-09-29 Light distribution controlling device for vehicle headlight

Publications (1)

Publication Number Publication Date
JP2006096158A true JP2006096158A (en) 2006-04-13

Family

ID=36236406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004284238A Pending JP2006096158A (en) 2004-09-29 2004-09-29 Light distribution controlling device for vehicle headlight

Country Status (1)

Country Link
JP (1) JP2006096158A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008024088A (en) * 2006-07-19 2008-02-07 Ichikoh Ind Ltd Headlight for vehicle
JP2008137641A (en) * 2006-09-26 2008-06-19 Valeo Vision Method for predicting and detecting bend part on part of road and its associated system
JP2009132230A (en) * 2007-11-29 2009-06-18 Omron Corp Headlamp light distribution control device
KR20140055362A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR20140055363A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR20140055364A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR20140059505A (en) * 2012-11-08 2014-05-16 현대모비스 주식회사 Adaptive front lighting system and control method thereof
JP2016068793A (en) * 2014-09-30 2016-05-09 富士重工業株式会社 Vehicle headlamp device
US9656595B2 (en) 2013-03-06 2017-05-23 Denso Corporation System, device and method for controlling vehicle light

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05303901A (en) * 1991-09-02 1993-11-16 Etsuzo Sakaguchi Illuminating direction switching lamp
JP2001001832A (en) * 1999-06-15 2001-01-09 Nissan Motor Co Ltd Lighting system for vehicle
JP2001114012A (en) * 1999-10-15 2001-04-24 Koito Mfg Co Ltd Lighting fixture device for vehicle
JP2001270383A (en) * 2000-03-28 2001-10-02 Koito Mfg Co Ltd Head lamp system for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05303901A (en) * 1991-09-02 1993-11-16 Etsuzo Sakaguchi Illuminating direction switching lamp
JP2001001832A (en) * 1999-06-15 2001-01-09 Nissan Motor Co Ltd Lighting system for vehicle
JP2001114012A (en) * 1999-10-15 2001-04-24 Koito Mfg Co Ltd Lighting fixture device for vehicle
JP2001270383A (en) * 2000-03-28 2001-10-02 Koito Mfg Co Ltd Head lamp system for vehicle

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008024088A (en) * 2006-07-19 2008-02-07 Ichikoh Ind Ltd Headlight for vehicle
JP2008137641A (en) * 2006-09-26 2008-06-19 Valeo Vision Method for predicting and detecting bend part on part of road and its associated system
JP2009132230A (en) * 2007-11-29 2009-06-18 Omron Corp Headlamp light distribution control device
KR20140055362A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR20140055363A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR20140055364A (en) * 2012-10-31 2014-05-09 현대모비스 주식회사 Lighting system for vehicle and control method thereof
KR101934750B1 (en) * 2012-10-31 2019-01-03 현대모비스 주식회사 Lighting System for Vehicle and Control Method Thereof
KR20140059505A (en) * 2012-11-08 2014-05-16 현대모비스 주식회사 Adaptive front lighting system and control method thereof
US9656595B2 (en) 2013-03-06 2017-05-23 Denso Corporation System, device and method for controlling vehicle light
JP2016068793A (en) * 2014-09-30 2016-05-09 富士重工業株式会社 Vehicle headlamp device

Similar Documents

Publication Publication Date Title
US10576873B2 (en) Vehicle lamp and vehicle lamp control system
KR101760995B1 (en) Driving support apparatus for vehicle
US6752508B2 (en) Headlamp system for vehicle
KR101827698B1 (en) Vehicle and method for controlling thereof
EP2116421B1 (en) Automotive headlamp apparatus
EP0869031B1 (en) Device for controlling the light beam and/or the lighting direction
US5896085A (en) Apparatus for controlling light distributions of head lamps
US8425092B2 (en) Headlamp control device and vehicle headlamp having headlamp control device
JPWO2014192369A1 (en) Danger notification control device for vehicle
JP3111153B2 (en) Headlight device for vehicles
JP3839609B2 (en) Vehicle lamp device
US6343869B1 (en) Light unit for vehicle
JP5424771B2 (en) Light distribution control system for vehicle headlamps
JP5774481B2 (en) Method for detecting poor headlamp adjustment in vehicles with cameras
JP4473232B2 (en) Vehicle front environment detecting device for vehicle and lighting device for vehicle
DE102006041857B4 (en) Method and system for improving traffic safety
DE102011081394B3 (en) Method and control unit for highlighting an expected movement path of a vehicle
US9126529B2 (en) Method for controlling a light emission of a headlight of a vehicle
JP4223320B2 (en) Vehicle driving support device
JP2015052548A (en) Vehicle exterior environment recognition device
JP5802659B2 (en) Method for controlling vehicle components
DE60302322T2 (en) Method and device for detecting lane curves
US20150003087A1 (en) Vehicular headlight apparatus
US8115394B2 (en) Headlamp controller
US8224533B2 (en) Auto lighting system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060525

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090623

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090821

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20100115

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100323

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20101005