WO-2026094614-A1 - HEADLIGHT CONTROL DEVICE, PROGRAM, AND LIGHT SYSTEM

WO2026094614A1WO 2026094614 A1WO2026094614 A1WO 2026094614A1WO-2026094614-A1

Abstract

In the present invention, a first light source 110 irradiates a first region 810 in which a cutoff line is at the upper end. A second light source 120 irradiates a second region 820 including the vicinity of the cutoff line. A third light source 130 can irradiate a third region 830 including an area above the cutoff line. A light blocking section 832 can be formed in the third region 830 and the position of the light blocking section can be controlled in the horizontal direction. In a beam mode in which light distribution is variable, when a target for which light blocking is to be performed is detected, a control device 200 selects a first state φ1 or a second state φ2 in accordance with the state of the target. In the first state φ1, the first light source 110 is turned on, the third light source 130 is turned on, and the third light source 130 is caused to form a light blocking section 832 at a position corresponding to the target. In the second state φ2, the control device 200 turns on the first light source 110 and the second light source 120.

Inventors

SUGIMOTO ATSUSHI

Assignees

株式会社小糸製作所

Dates

Publication Date: 20260507
Application Date: 20251014
Priority Date: 20241029

Claims (20)

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, when a target to be shielded is detected, it adaptively switches between (a) a first state in which the first light source and the third light source are turned on, and the third light source is made to form the shielding portion at a position corresponding to the target, and (b) a second state in which the first light source and the second light source are turned on.
The control device according to claim 1, characterized in that the control device switches between the first state and the second state according to the state of the target.
The control device according to claim 2, characterized in that (iii) when the variable beam mode does not detect the target, it forms the same beam pattern as the high beam mode.
The control device according to claim 2, characterized in that (iii) when the second state is selected in the variable beam mode, the control device increases the brightness of the second light source and/or tilts it up.
The control device according to any one of claims 2 to 4, characterized in that the control device switches between the first state and the second state according to the distance to the target.
The control device according to claim 5, characterized in that the control device selects the first state when the distance to the target is shorter than a predetermined threshold, and selects the second state when the distance to the target is longer than the threshold.
The control device according to claim 1, characterized in that the control device switches between the first state and the second state according to the state of the vehicle equipped with the headlamp.
The control device according to claim 7, characterized in that (iii) when the variable beam mode does not detect the target, it forms the same beam pattern as the high beam mode.
The control device according to claim 7, characterized in that (iii) when the second state is selected in the variable beam mode, the control device increases the brightness of the second light source and/or tilts it up.
The control device according to any one of claims 7 to 9, characterized in that the control device switches between the first state and the second state according to the speed of the vehicle equipped with the headlamp.
The control device according to claim 10, characterized in that the control device selects the first state when the vehicle's speed is slower than a predetermined threshold, and selects the second state when the vehicle's speed is faster than the threshold.
The control device according to any one of claims 1, 2, or 8, characterized in that the control device is provided on the vehicle side on which the headlamp is mounted.
The control device according to any one of claims 1, 2, or 8, characterized in that the control device is provided integrally with the headlamp.
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) When a target to be shielded is detected while the variable beam is lit, the system adaptively switches between (a) a first state in which the first light source and the third light source are turned on, and the third light source is made to form the shielding portion at a position corresponding to the target, and (b) a second state in which the first light source and the second light source are turned on. A program characterized by causing the execution of a specific action.
The program is transmitted to the processor of the control device. A process for determining the state of the target, A process to select one of the first state and the second state according to the state of the target, The program according to claim 14, characterized by causing it to execute.
The program is transmitted to the processor of the control device. A process for determining the status of the vehicle equipped with the aforementioned headlamp, A process to select one of the first state and the second state according to the state of the vehicle, The program according to claim 14, characterized by causing it to execute.
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 distribution mode, when a target to be shielded is detected, it switches between (a) a first state in which the first light source and the third light source are turned on, and the third light source is made to form the shielding portion at a position corresponding to the target, and (b) a second state in which the first light source and the second light source are turned on.
The lamp system according to claim 17, characterized in that the control device switches between the first state and the second state according to the state of the target.
The lamp system according to claim 18, characterized in that (iii) when the variable beam mode does not detect the target, the control device forms the same light distribution as the high beam mode.
The lamp system according to claim 17, characterized in that the control device switches between the first state and the second state according to the state of the vehicle equipped with the headlamp.

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"), 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 figure illustrates a modified example of the second variable light distribution formed in the ADB mode of Embodiment 1.This figure illustrates another modified example of the second variable light distribution formed in the ADB mode of Embodiment 1.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 figure illustrates a modified example of the second variable light distribution formed in the second state of the ADB mode.This figure illustrates another modified example of the second variable light distribution formed in the second state of the 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 adaptively switches between (i) turning on the first and second light sources in low-beam mode, (ii) turning on the first, second, and third light sources in high-beam mode, and (iii) detecting a target to be shielded in variable beam mode, (a) a first state in which the first and third light sources are turned on and the third light source is instructed to form a light-shielding portion at a position corresponding to the target, and (b) a second state in which the first and second light sources are turned on. With this configuration, in the