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WO-2026094613-A1 - HEADLAMP CONTROL DEVICE, PROGRAM, AND LAMP SYSTEM

WO2026094613A1WO 2026094613 A1WO2026094613 A1WO 2026094613A1WO-2026094613-A1

Abstract

A control device 200 controls a headlamp 300. A first light source 110 illuminates a first region 810 having a cutoff line as the upper edge thereof. A second light source 120 illuminates a second region 820 including an area in the vicinity of the cutoff line. A third light source 130 can illuminate a third region 830 including an area above the cutoff line, and a light blocking portion 832 of which the position can be controlled in the horizontal direction can be formed in the third region 830. In a variable light distribution mode (iii), the control device 200 turns on the first light source 110, turns on the third light source 130, and causes the third light source 130 to form the light shielding portion 832 at a position corresponding to a target. The control device 200 adaptively switches the second light source 120 on and off.

Inventors

  • SUGIMOTO ATSUSHI

Assignees

  • 株式会社小糸製作所

Dates

Publication Date
20260507
Application Date
20251014
Priority Date
20241029

Claims (15)

  1. A control device for headlights, The aforementioned headlamp is A first light source capable of illuminating a first region with the cutoff line as its upper edge, A second light source capable of illuminating a second region including the vicinity of the cutoff line, A third light source capable of irradiating a third region including the area above the cutoff line, and capable of forming a light-shielding portion within the third region whose position can be controlled horizontally, Equipped with, The control device is (i) In low beam mode, turn on the first light source and the second light source, (ii) In high beam mode, turn on the first light source, the second light source, and the third light source, (iii) A control device characterized in that, in a variable beam distribution mode, the first light source is turned on, the third light source is turned on, the light-shielding portion is formed on the third light source at a position corresponding to a target, and the second light source is adaptively switched on and off.
  2. The control device according to claim 1, characterized in that it switches the second light source on and off according to the state of the target.
  3. The control device according to claim 2, characterized in that the control device switches the second light source on and off according to the distance to the target.
  4. The control device according to claim 2, characterized in that it turns on the second light source when the distance to the target is greater than a predetermined threshold.
  5. The control device according to claim 1, characterized in that it switches the second light source on and off according to the state of the vehicle equipped with the headlamp.
  6. The control device according to claim 5, characterized in that the control device switches the second light source on and off according to the speed of the vehicle equipped with the headlamp.
  7. The control device according to claim 5, characterized in that it turns on the second light source when the speed of the vehicle is faster than a predetermined threshold.
  8. The control device according to any one of claims 1 to 7, characterized in that the control device is provided on the vehicle side on which the headlamp is mounted.
  9. The control device according to any one of claims 1 to 7, characterized in that the control device is provided integrally with the headlamp.
  10. A program executed by the headlamp control unit, The aforementioned headlamp is A first light source capable of illuminating a first region with the cutoff line as its upper edge, A second light source capable of illuminating a second region including the vicinity of the cutoff line, A third light source capable of irradiating a third region including the area above the cutoff line, and capable of forming a light-shielding portion within the third region whose position can be controlled horizontally, It is equipped with, The program is transmitted to the processor of the control device. (i) A process of turning on the first light source and the second light source in response to an instruction to turn on the low beam, (ii) A process of turning on the first light source, the second light source, and the third light source in response to an instruction to turn on the high beams. (iii) A process that, in response to an instruction to turn on the variable beam, turns on the first light source, turns on the third light source, causes the third light source to form the light-shielding portion at a position corresponding to the target, and adaptively switches the second light source on and off. A program characterized by causing the execution of a specific action.
  11. The program according to claim 10, characterized in that the on/off state of the second light source is switched according to the state of the target.
  12. The program according to claim 10, characterized in that the on/off state of the second light source can be switched according to the state of the vehicle equipped with the headlamp.
  13. A first light source capable of illuminating a first region with the cutoff line as its upper edge, A second light source capable of illuminating a second region including the vicinity of the cutoff line, A third light source capable of irradiating a third region including the area above the cutoff line, and capable of forming a light-shielding portion within the third region whose position can be controlled horizontally, A control device for controlling the first light source, the second light source, and the third light source, Equipped with, The control device is (i) In low beam mode, turn on the first light source and the second light source, (ii) In high beam mode, turn on the first light source, the second light source, and the third light source, (iii) A lamp system characterized in that, in a variable beam mode, the first light source is turned on, the third light source is turned on, the light-shielding portion is formed on the third light source at a position corresponding to a target, and the second light source is adaptively switched on and off.
  14. The lamp system according to claim 13, characterized in that the control device switches the second light source on and off according to the state of the target.
  15. The lamp system according to claim 13, characterized in that the control device switches the second light source on and off according to the state of the vehicle on which the control device is installed.

Description

Headlamp control device, program, lamp system This disclosure relates to vehicle lighting equipment. Vehicle lighting systems generally allow switching between low beams and high beams. Low beams illuminate the area immediately surrounding the vehicle with a predetermined illuminance, and their light distribution is regulated to avoid glare to oncoming or preceding vehicles. They are primarily used when driving in urban areas. High beams, on the other hand, illuminate a wide area and a distant point ahead with relatively high illuminance. They are primarily used when driving at high speeds on roads with few oncoming or preceding vehicles. Therefore, while high beams offer superior visibility to the driver compared to low beams, they have the problem of causing glare to drivers of vehicles ahead and pedestrians. In recent years, Adaptive Driving Beam (ADB) technology has been proposed, which dynamically and adaptively controls the high beam pattern based on the surrounding conditions of the vehicle. ADB technology detects preceding vehicles, oncoming vehicles (collectively referred to as "forward vehicles"), and pedestrians (collectively referred to as "targets") in front of the vehicle, and reduces glare to vehicles or pedestrians by dimming the area corresponding to the target. This is a block diagram of the lamp system according to Embodiment 1.This diagram illustrates the area that the lamp system can illuminate.This diagram illustrates the low-beam light distribution formed in low-beam mode.This diagram illustrates the low-beam light distribution formed in low-beam mode.This diagram illustrates the high-beam light distribution formed in high-beam mode.This diagram illustrates the first variable light distribution formed in ADB mode.This is a top view of the first variable light distribution formed in ADB mode.This diagram illustrates the second variable light distribution formed in ADB mode.This is a top view of the second variable light distribution formed in ADB mode.This is a block diagram showing a lamp system according to one embodiment of Embodiment 1.This is a block diagram showing a lamp system according to another embodiment of Embodiment 1.This is a block diagram of the lamp system according to Embodiment 2.This diagram illustrates the first variable light distribution formed in ADB mode.This is a top view of the first variable light distribution formed in ADB mode.This diagram illustrates the second variable light distribution formed in ADB mode.This is a top view of the second variable light distribution formed in ADB mode.This is a block diagram showing a lamp system according to one embodiment of Embodiment 2.This is a block diagram showing a lamp system according to another embodiment of Embodiment 2. (Summary of the embodiment) This section outlines some exemplary embodiments of the present disclosure. This outline is intended to provide a basic understanding of the embodiments and to simplify some concepts of one or more embodiments, serving as a prelude to the more detailed descriptions that follow. It does not limit the scope of the invention or disclosure. Furthermore, this outline is not a comprehensive overview of all possible embodiments and does not limit the essential components of the embodiments. For convenience, "one embodiment" may refer to one embodiment (example or variation) or more embodiments (examples or variations) disclosed herein. A control device according to one embodiment controls a headlamp. The headlamp includes a first light source capable of illuminating a first region with the cutoff line as its upper end, a second light source capable of illuminating a second region including the vicinity of the cutoff line, and a third light source capable of illuminating a third region including the area above the cutoff line, and capable of forming a horizontally position-controllable light-shielding portion within the third region. The control device (i) turns on the first and second light sources in low-beam mode, (ii) turns on the first, second, and third light sources in high-beam mode, and (iii) turns on the first and third light sources in variable beam mode, causes the third light source to form a light-shielding portion at a position corresponding to a target, and adaptively switches the second light source on and off. With this configuration, when the second light source is turned on, a clearer field of view can be provided by illuminating the road surface at a greater distance, and when the second light source is turned off, glare can be suppressed. In one embodiment, the control device may switch the second light source on and off depending on the state of the target. With this configuration, in situations where there is a high probability of causing glare to the target, the second light source is turned off, and the second area is left unilluminated, thereby suppressing glare. When a situation where there is a low probability of causing glare to the target is