WO2015046346A1 - 車両用灯具制御システム - Google Patents
車両用灯具制御システム Download PDFInfo
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- WO2015046346A1 WO2015046346A1 PCT/JP2014/075456 JP2014075456W WO2015046346A1 WO 2015046346 A1 WO2015046346 A1 WO 2015046346A1 JP 2014075456 W JP2014075456 W JP 2014075456W WO 2015046346 A1 WO2015046346 A1 WO 2015046346A1
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- Prior art keywords
- light emitting
- emitting element
- semiconductor light
- movable shade
- light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
- B60Q1/143—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
- F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/686—Blades, i.e. screens moving in a vertical plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
- F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
- F21S41/692—Shields, i.e. screens not creating an image meant to be projected
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/10—Protection of lighting devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0471—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor detecting the proximity, the presence or the movement of an object or a person
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/05—Special features for controlling or switching of the light beam
- B60Q2300/056—Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/10—Indexing codes relating to particular vehicle conditions
- B60Q2300/11—Linear movements of the vehicle
- B60Q2300/112—Vehicle speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/30—Indexing codes relating to the vehicle environment
- B60Q2300/32—Road surface or travel path
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/41—Indexing codes relating to other road users or special conditions preceding vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/45—Special conditions, e.g. pedestrians, road signs or potential dangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
- F21W2102/16—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having blurred cut-off lines
Definitions
- the present invention relates to a vehicular lamp control system.
- a vehicular headlamp apparatus using a plurality of light emitting elements (for example, light emitting diodes) forming an array as a light source is known.
- each light emitting element is controlled to be turned on and off independently, whereby at least one of a plurality of partial areas constituting the irradiation range can be selectively set to an irradiation state or a non-irradiation state. it can.
- the vehicle headlamp device is provided with a movable shade. When a pedestrian is detected, the movable shade arranged at the retracted position moves to the front side of the array of light emitting elements, and walks. It is shown that light is not irradiated to a person's head (for example, refer patent document 1).
- the movable shade is normally disposed at the retracted position, so that the front side of the array of light emitting elements is open to the outside. It is said that it was in the state. For this reason, in the daytime, sunlight may be collected by the projection lens and irradiated toward the array of light emitting elements. Then, the sunlight and the heat collected by the projection lens may deteriorate or damage the light emitting element, which may reduce the irradiation efficiency.
- One of the objects of the present invention is to provide a vehicular lamp control system capable of suppressing deterioration and damage of a semiconductor light emitting element caused by sunlight and maintaining the irradiation efficiency of the semiconductor light emitting element. .
- an array of light emitting elements is used to increase forward visibility when the vehicle speed reaches a predetermined speed at night. It is possible to control to illuminate and emit a high beam. Further, when a preceding vehicle is detected in this state, it is possible to control the movement of the movable shade to narrow the irradiation range and suppress the generation of illusion light to the passenger of the preceding vehicle. By the way, in the above vehicle headlamp device, the array of light emitting elements suddenly lights up and the front of the vehicle suddenly becomes bright, which may cause the driver to feel uncomfortable.
- One of the objects of the present invention is to provide a vehicular lamp control system capable of improving visibility while suppressing a sense of incongruity to the driver at the time of lighting.
- the vehicle lamp control system of the present invention that can solve the above-mentioned problems is A projection lens; A semiconductor light emitting element that is disposed near the rear focal point of the projection lens and emits light toward the projection lens; Moveable between a shielding position capable of shielding light emitted from the semiconductor light emitting element and incident on the projection lens, and a non-shielding position capable of shielding light emitted from the semiconductor light emitting element and incident on the projection lens.
- a movable shade When the semiconductor light emitting element is in an extinguished state, a control unit that performs control to move the movable shade to the shielding position; Is provided.
- the movable shade is moved to the shielding position.
- the sunlight condensed by the projection lens can be blocked by the movable shade, and the sunlight can be prevented from being irradiated to the semiconductor light emitting element. Therefore, it can suppress that a semiconductor light emitting element deteriorates or is damaged with the sunlight and the heat which were condensed with the projection lens, and can maintain the irradiation efficiency of a semiconductor light emitting element.
- the vehicle lamp control system of the present invention is An optical member that transmits or reflects at least part of the incident light;
- the movable shade has a reflecting portion at a portion facing the projection lens,
- the optical member may be arranged at a position where the light transmitted through the projection lens and reflected by the reflection unit can be incident with the control unit moving the movable shade to the shielding position.
- the vehicular lamp control system configured as described above, sunlight reflected by the reflecting portion of the movable shade is irradiated onto the optical member, and the optical member is transmitted or reflected by the optical member.
- sunlight can be utilized and the design nature of the appearance of a lamp in the daytime can be improved, for example.
- the vehicle lamp control system of the present invention is A solar cell module having a power generation element;
- the movable shade has a reflecting portion at a portion facing the projection lens,
- the power generation element may be disposed at a position where the light transmitted through the projection lens and reflected by the reflection unit can be received with the control unit moving the movable shade to the shielding position.
- the vehicular lamp control system having the above configuration, sunlight reflected by the reflecting portion of the movable shade is received by the solar cell module to generate power. Thereby, the solar energy in the daytime can be used effectively.
- the vehicle lamp control system of the present invention that can solve the above-mentioned problems is A first lamp unit capable of emitting light for forming a first light distribution pattern in front of the lamp; A semiconductor light emitting element, and a movable shade configured to be movable in a predetermined direction and capable of changing a shielding range for shielding light emitted from the semiconductor light emitting element according to a movement position; A second lamp unit capable of irradiating light of the semiconductor light emitting element for forming a second light distribution pattern at a position higher than the first light distribution pattern; When the semiconductor light emitting element is switched from the unlit state to the lit state, the movable shade is disposed at a shielding position where the movable shade can shield light from the semiconductor light emitting element, and then the semiconductor light emitting element is caused to emit light. A control unit that performs control to move the movable shade so that the shielding range is reduced after the semiconductor light emitting element emits light.
- the semiconductor light emitting element when switching the semiconductor light emitting element from the extinguished state to the lit state, the semiconductor light emitting element is caused to emit light after the movable shade is disposed at the shielding position, and the semiconductor light emitting element emits light after being shielded Control is performed to move the movable shade so that the range becomes smaller. Therefore, compared to the case where the front of the vehicle is suddenly illuminated over a wide range by the second lamp unit, the irradiation range is continuously changed so as to gradually expand from a narrow state, so that the driver feels uncomfortable. In addition, visibility can be improved. In addition, the appearance of the change in the light distribution pattern can be improved.
- the movable shade moves to gradually expand the area irradiated with light from the second lamp unit. Therefore, compared to the case where the second lamp unit is suddenly turned on, the driver can You can get used to the flow of light distribution and reduce the burden of gaze behavior.
- the vehicle lamp control system of the present invention is In the second lamp unit, it is preferable that the plurality of semiconductor light emitting elements are arranged in a predetermined direction, and the second light distribution pattern is formed by light from the plurality of semiconductor light emitting elements.
- the second light distribution pattern is obtained by suddenly irradiating light in front of the vehicle by the plurality of semiconductor light emitting elements constituting the second lamp unit arranged side by side in a predetermined direction. Compared with the case where the vehicle is shielded after being formed, the visibility can be enhanced while suppressing the occurrence of a sense of incongruity to the driver.
- the vehicle lamp control system of the present invention is A vehicle speed sensor for measuring the traveling speed of the vehicle; A forward vehicle detection sensor for detecting the forward vehicle; With When the traveling speed exceeds a predetermined value, the control unit causes the semiconductor light emitting element to emit light after the movable shade is disposed at the shielding position, and the shielding range becomes small after the semiconductor light emitting element emits light. It is preferable to perform control to move the movable shade.
- the vehicular lamp control system having the above configuration, even if a signboard or a traffic light is erroneously detected as a preceding vehicle, the irradiation area of the illumination light of the second lamp unit is greatly changed, which causes trouble for the driver. It is possible to suppress such problems.
- the first light distribution pattern is a low beam light distribution pattern;
- the second light distribution pattern is preferably a high beam light distribution pattern.
- the semiconductor light emitting element when forming the light distribution pattern for high beam that irradiates far away, the semiconductor light emitting element emits light after the movable shade is arranged at the shielding position, and the semiconductor light emitting element emits light. Since control is performed to move the movable shade so as to reduce the shielding range later, visibility can be enhanced while suppressing the occurrence of a sense of discomfort to the driver at the start of irradiation with the high beam.
- the control unit preferably performs control to turn off the semiconductor light-emitting element after moving the movable shade to the shielding position when switching the semiconductor light-emitting element from a lighting state to a light-off state.
- the second lamp unit when the semiconductor light emitting element is switched from the lighting state to the extinguishing state, the second lamp unit is turned off by moving the movable shade to the shielding position and then turning off the semiconductor light emitting element. Compared with the case where the lamp is suddenly turned off, the irradiation range of the irradiation light of the second lamp unit is gradually reduced, so that the driver can be prevented from feeling uncomfortable even when the lamp is turned off. In addition, the appearance of the change in the light distribution pattern can be improved.
- deterioration and damage of a semiconductor light emitting element caused by sunlight can be suppressed, and irradiation efficiency of the semiconductor light emitting element can be maintained.
- FIG. 1 is a diagram schematically showing an overall configuration of a vehicle on which a vehicle lamp control system according to a first embodiment of the present invention is mounted. It is a horizontal sectional view which shows the structure of the right headlamp unit in FIG. It is a longitudinal cross-sectional view of the 2nd lamp unit part in a headlamp unit. It is a figure which shows the structure of a light emitting element unit typically. It is a schematic side view which shows typically the structure of the 2nd lamp unit in a headlamp unit. It is a figure which shows typically the light distribution pattern formed with the light from a headlamp apparatus. It is a figure which shows typically the light distribution pattern formed with the light from a headlamp apparatus. It is a schematic side view of the 2nd lamp unit in a headlamp unit.
- FIG. 5 It is a figure for demonstrating the modification 5 which has the movable shade of another form, and is a schematic front view of the movable shade of a 2nd lamp unit. It is a figure which shows typically the light distribution pattern in the modification 5.
- FIG. It is a schematic front view of the other movable shade of the modification 5.
- the example of the illumination light controlled by the vehicle lamp control system which concerns on 4th Embodiment is shown. It is a figure explaining control of the movable shade at the time of lighting in the vehicular lamp control system concerning a 4th embodiment, and (c) is a figure showing a light distribution pattern typically, respectively.
- FIG. 1 schematically shows the overall configuration of a vehicle 10 equipped with a vehicle lamp control system 11 according to a first embodiment of the present invention.
- the vehicular lamp control system 11 includes a headlamp device 12, an integrated control unit 14, a wheel speed sensor 16 (an example of a vehicle speed sensor), a steering angle sensor 17, a camera 18 (an example of a front vehicle detection sensor), and a navigation system 19. It has.
- the integrated control unit 14 includes a CPU that executes various arithmetic processes, a ROM that stores various control programs, a RAM that is used as a work area for data storage and program execution, and executes various controls in the vehicle 10. .
- the wheel speed sensor 16 is provided corresponding to each of the four wheels of the left and right front wheels and the rear wheel assembled to the vehicle 10. Each of the wheel speed sensors 16 is communicably connected to the integrated control unit 14 and outputs a signal corresponding to the rotational speed of the wheel to the integrated control unit 14. The integrated control unit 14 calculates the speed of the vehicle 10 using the signal input from the wheel speed sensor 16.
- the steering angle sensor 17 is provided on the steering shaft and is communicably connected to the integrated control unit 14.
- the steering angle sensor 17 outputs a steering angle pulse signal corresponding to the steering rotation angle of the steering shaft by the driver to the integrated control unit 14.
- the integrated control unit 14 calculates the traveling direction of the vehicle 10 using the signal input from the steering angle sensor 17.
- the camera 18 includes an image sensor such as a CCD (Charged Coupled Device) sensor or a CMOS (Complementary Metal Oxide Semiconductor) sensor, and shoots the front of the vehicle to generate image data.
- the camera 18 is communicably connected to the integrated control unit 14, and the generated image data is output to the integrated control unit 14.
- the navigation system 19 is communicably connected to the integrated control unit 14 and outputs information indicating the location where the vehicle 10 is traveling to the integrated control unit 14.
- the headlamp device 12 includes a headlamp controller 20, a right headlamp unit 22R, and a left headlamp unit 22L.
- the right headlamp unit 22R and the left headlamp unit 22L are collectively referred to as the headlamp unit 22 as necessary.
- the headlamp control unit 20 includes a CPU that executes various arithmetic processes, a RAM that is used as a work area for data storage and program execution, and the like.
- the headlamp control unit 20 includes a ROM that stores various control programs and control information.
- the headlamp control unit 20 controls light irradiation by the headlamp unit 22 based on a control signal transmitted from the integrated control unit 14 and various information stored in the ROM or the like.
- the headlamp control unit 20 functions as a control unit in the present invention.
- FIG. 2 shows a cross section of the right headlamp unit 22R as seen from above by cutting along the horizontal plane.
- the right headlamp unit 22R includes a translucent cover 30, a lamp body 32, an extension 34, a first lamp unit 36, and a second lamp unit 38.
- the translucent cover 30 is formed of a translucent resin or the like.
- the translucent cover 30 is attached to the lamp body 32 to define a lamp chamber.
- the first lamp unit 36 and the second lamp unit 38 are disposed in the lamp chamber.
- the extension 34 has an opening for allowing irradiation light from the first lamp unit 36 and the second lamp unit 38 to pass therethrough, and is fixed to the lamp body 32.
- the first lamp unit 36 is disposed on the vehicle outer side than the second lamp unit 38.
- the first lamp unit 36 is a so-called parabolic lamp unit and forms a low beam light distribution pattern (first light distribution pattern) to be described later.
- the first lamp unit 36 uses an incandescent lamp having a filament such as a halogen lamp, a HID (High Intensity Discharge) lamp such as a metal halide lamp, a light emitting diode (Light Emitting Diode: LED), or the like as the light source 42.
- the second lamp unit 38 includes a holder 46, a projection lens 48, a light emitting element unit 49, a substrate 50, a heat sink 54, and a movable shade 55.
- the projection lens 48 is attached to one opening of a holder 46 formed in a cylindrical shape.
- the projection lens 48 is a plano-convex aspheric lens having a convex front surface and a flat rear surface, and projects a light source image formed on the rear focal plane to the front of the lamp as a reverse image.
- the light emitting element unit 49 is provided on the front surface of the substrate 50, and the heat sink 54 is provided on the rear surface of the substrate 50.
- the heat sink 54 is formed in a shape having a large number of heat radiation fins from a metal such as aluminum.
- FIG. 4 shows a configuration of the light emitting element unit 49 as viewed from the front of the vehicle.
- the light emitting element unit 49 includes a light emitting element array 52 including an element substrate 52 a mounted on the substrate 50.
- the light emitting element array 52 includes a first semiconductor light emitting element 52-1 to a thirteenth semiconductor light emitting element 52-13 arranged from the right side to the left side of the vehicle.
- the semiconductor light emitting devices 52-1 to 52-13 are formed in a rectangular parallelepiped shape having the same height and the same width. Although not shown, each of the semiconductor light emitting elements 52-1 to 52-13 has a light source and a thin film.
- the light source is a white LED (light emitting diode) having a light emitting surface of about 1 mm square, for example, and the thin film is provided so as to cover the light emitting surface.
- numbers are assigned to the respective semiconductor light emitting elements 52-1 to 52-13, and the second semiconductor light emitting elements 52-2 to 52-2 other than the first semiconductor light emitting element 52-1 and the thirteenth semiconductor light emitting element 52-13 are used. Reference numerals of the 12 semiconductor light emitting elements 52-12 are omitted.
- the semiconductor light emitting device with the number 7 means the seventh semiconductor light emitting device 52-7.
- Each of the semiconductor light emitting elements 52-1 to 52-13 forms a current circuit with the headlamp control unit 20 via the control line 53.
- the control lines 53 are not shown for the second semiconductor light emitting element 52-2 to the twelfth semiconductor light emitting element 52-12 other than the first semiconductor light emitting element 52-1 and the thirteenth semiconductor light emitting element 52-13. is doing.
- the headlamp control unit 20 can control the light intensity when the semiconductor light emitting elements 52-1 to 52-13 are turned on and off by adjusting the current value supplied through the control line 53.
- the substrate 50 is mounted in the other opening of the holder 46, whereby the light emitting element unit 49 is disposed inside the holder 46.
- the plurality of semiconductor light emitting elements 52-1 to 52-13 provided in the light emitting element unit 49 are disposed in the vicinity of the rear focal point of the projection lens 48.
- Each of the plurality of semiconductor light emitting elements 52-1 to 52-13 emits light to emit light toward the projection lens 48, and each image is projected in front of the lamp.
- the plurality of semiconductor light emitting elements 52-1 to 52-13 function as a plurality of light sources.
- Reflectors 51 are provided above and below the light emitting element unit 49, and a part of the light emitted from the light emitting element unit 49 is reflected by the reflector 51 and guided to the projection lens 48.
- the movable shade 55 is formed in a rectangular plate shape in a front view having a size covering the entire front side of the semiconductor light emitting elements 52-1 to 52-13.
- the longitudinal direction is arranged along the arrangement direction of the semiconductor light emitting elements 52-1 to 52-13.
- the movable shade 55 is curved so that the projection lens 48 side is recessed in an arc shape in a side view, and a slightly recessed curved surface is inclined obliquely upward.
- a portion facing the projection lens 48 in this example, a concave surface portion
- the movable shade 55 is supported so as to be movable in the vertical direction.
- the movable shade 55 is provided with a moving mechanism (not shown), and moves between the shielding position and the non-shielding position by this moving mechanism.
- the moving mechanism is controlled by the headlamp control unit 20.
- the movable shade 55 includes a shielding position (a position indicated by a solid line in FIG. 5) covering the front side of the semiconductor light emitting elements 52-1 to 52-13 and a front surface of the semiconductor light emitting elements 52-1 to 52-13. It is possible to move between the non-shielding position retracted from the side (position indicated by a two-dot chain line in FIG. 5).
- the movable shade 55 When the movable shade 55 is arranged at the shielding position, a part or all of the light emitted from the semiconductor light emitting elements 52-1 to 52-13 and incident on the projection lens 48 is shielded, and the movable shade 55 is When arranged at the non-shielding position, the light emitted from the semiconductor light emitting elements 52-1 to 52-13 and entering the projection lens 48 is brought into an unshielded state. In the shielding state, the shielding range of light incident on the projection lens 48 from the semiconductor light emitting elements 52-1 to 52-13 is changed according to the position of the movable shade 55.
- the left headlight unit 22L is configured symmetrically with the right headlight unit 22R, and detailed description thereof is omitted. Also in the right headlamp unit 22R, the first semiconductor light emitting element 52-1 to the thirteenth semiconductor light emitting element 52-13 are arranged from the vehicle right side to the vehicle left side. That is, regarding the internal configuration of the second lamp unit 38, the left headlamp unit 22L and the right headlamp unit 22R are not symmetrical.
- FIG. 6 shows a light distribution pattern formed on a virtual vertical screen disposed, for example, at a position 25 m ahead of the vehicle by light irradiated forward from the right headlight unit 22R and the left headlight unit 22L.
- the low beam light distribution pattern PL (an example of the first light distribution pattern) is formed by combining light emitted from the first lamp unit 36 of the right headlight unit 22R and the left headlight unit 22L.
- the low beam light distribution pattern PL is a left light distribution low beam light distribution pattern, and has a first cut-off line CL1 to a third cut-off line CL3 at its upper edge.
- the first cut-off line CL1 to the third cut-off line CL3 extend in the horizontal direction with a difference in left and right steps with a VV line as a boundary passing through the focal point in the front direction of the lamp.
- the first cut-off line CL1 is used as an oncoming lane cut-off line.
- the third cutoff line CL3 extends obliquely from the left end of the first cutoff line CL1 toward the upper left.
- the second cut-off line CL2 extends on the line HH on the left side from the intersection of the third cut-off line CL3 and the line HH. That is, the second cut-off line CL2 is used as the own lane side cut-off line.
- the additional light distribution pattern PA (second light distribution pattern) is emitted from all the semiconductor light emitting elements 52-1 to 52-13 included in the second lamp unit 38 of the right headlamp unit 22R and the left headlamp unit 22L. Is defined as the light distribution pattern formed by
- the additional light distribution pattern PA is formed in a strip shape including a horizontal line (HH line) and extending in the horizontal direction so that the lower end is positioned on the first cut-off line CL1.
- the additional light distribution pattern PA forms a high beam light distribution pattern together with the low beam light distribution pattern PL. That is, the second lamp unit 38 functions as a high beam light source, and the additional light distribution pattern PA formed by the second lamp unit 38 is a part of the high beam light distribution pattern.
- the headlamp control unit 20 controls the moving mechanism to move the movable shade 55 arranged at the non-shielding position from the lower side to the upper side,
- the movable shade 55 is disposed at a shielding position that enters between the semiconductor light emitting elements 52-1 to 52-13 and the projection lens.
- the additional light distribution pattern PA is shielded from the upper side to form a shielding area SA, and light irradiation from the second lamp unit 38 to the head of the pedestrian and the oncoming vehicle is prevented.
- the generation of dazzling light for pedestrians and oncoming passengers can be suppressed.
- the movable shade 55 when the movable shade 55 is disposed at the non-shielding position which is the retracted position, the front side of the semiconductor light emitting elements 52-1 to 52-13 is in an open state. Therefore, during the daytime, sunlight is collected by the projection lens 48 and irradiated to the semiconductor light emitting elements 52-1 to 52-13. Then, the sunlight condensed by the projection lens 48 and its heat may cause the semiconductor light emitting elements 52-1 to 52-13 to deteriorate or be damaged, leading to a reduction in irradiation efficiency.
- the headlamp control unit 20 controls the moving mechanism, and the semiconductor light emitting elements 52-1 to 52-13 are turned off as shown in FIG.
- the movable shade 55 is moved to the shielding position.
- the sunlight Ls collected by the projection lens 48 is blocked by the movable shade 55, and irradiation to the semiconductor light emitting elements 52-1 to 52-13 is prevented.
- the sunlight Ls irradiated to the movable shade 55 is reflected by the reflecting portion 56 on the projection lens 48 side of the movable shade 55 and guided obliquely upward. Thereby, glare and the like in the oncoming vehicle due to the light reflected by the movable shade 55 being irradiated to the front side of the vehicle 10 are suppressed.
- the movable shade 55 is moved to the shielding position.
- the sunlight Ls collected by the projection lens 48 can be blocked by the movable shade 55, and irradiation to the semiconductor light emitting elements 52-1 to 52-13 can be prevented. Therefore, it is possible to prevent the semiconductor light emitting elements 52-1 to 52-13 from being deteriorated or damaged by the sunlight Ls collected by the projection lens 48 and its heat. That is, it becomes possible to protect the semiconductor light emitting elements 52-1 to 52-13 from the sunlight Ls and maintain the irradiation efficiency of the semiconductor light emitting elements 52-1 to 52-13.
- FIG. 9 is a schematic side view of the second lamp unit of the headlamp unit of the vehicle lamp control system according to the second embodiment.
- the second lamp unit 38 includes an optical member 57.
- the optical member 57 is made of transparent resin or glass, and transmits at least part of incident light.
- the optical member 57 has a curved surface protruding from the upper surface side and a substantially flat shape on the lower surface side, and is disposed obliquely above the movable shade 55.
- the optical member 57 is placed at a position where the sunlight Ls that has passed through the projection lens 48 and is reflected by the reflecting portion 56 in a state where the headlamp control portion 20 has moved the movable shade 55 to the shielding position can enter. Has been placed.
- the headlamp control unit 20 controls the moving mechanism to move the movable shade. 55 is moved to the shielding position. Thereby, the sunlight Ls collected by the projection lens 48 is blocked by the movable shade 55, and irradiation to the semiconductor light emitting elements 52-1 to 52-13 is prevented.
- the sunlight Ls irradiated to the movable shade 55 is reflected by the reflecting portion 56 on the projection lens 48 side of the movable shade 55 and guided obliquely upward.
- the optical member 57 is irradiated. Then, the light applied to the optical member 57 passes through the optical member 57. The light transmitted through the optical member 57 is diffused toward the outside.
- an optical member 57 is further provided in addition to the configuration of the first embodiment. For this reason, the light reflected by the reflecting portion 56 of the movable shade 55 can be irradiated toward the optical member 57 and transmitted through the optical member 57 to be diffused to the surroundings. Thereby, sunlight Ls can be utilized and the design nature of headlight unit 22 in the daytime can be improved.
- the optical member 57 has been described as a member that is formed of a transparent resin or glass and can transmit light, but is not limited to this example.
- the optical member 57 may be, for example, a reflector having a reflecting surface that can further reflect light reflected by the reflecting portion 56 of the movable shade 55 in a predetermined direction. Even if it is this structure, the sunlight Ls can be utilized and the designability of the headlamp unit 22 in the daytime can be improved.
- FIG. 10 is a schematic side view of the second lamp unit of the headlamp unit of the vehicle lamp control system according to the third embodiment.
- the second lamp unit 38 includes a solar cell module 58.
- This solar cell module 58 has a power generation element that converts the irradiated light into electricity.
- This solar cell module 58 is disposed obliquely above the movable shade 55.
- the solar cell module 58 can receive the sunlight Ls that is transmitted through the projection lens 48 and reflected by the reflecting unit 56 with the headlamp control unit 20 moving the movable shade 55 to the shielding position. Is arranged.
- the headlamp control unit 20 controls the moving mechanism, and the movable shade 55 is moved to the shielding position. Thereby, the sunlight Ls collected by the projection lens 48 is blocked by the movable shade 55, and irradiation to the semiconductor light emitting elements 52-1 to 52-13 is prevented.
- the sunlight irradiated to the movable shade 55 is reflected by the reflecting portion 56 on the projection lens 48 side of the movable shade 55 and guided obliquely upward.
- the light is applied to the solar cell module 58 and is generated by the power generation element of the solar cell module 58.
- a solar cell module 58 is further provided in addition to the configuration of the first embodiment. For this reason, the sunlight Ls reflected by the reflecting portion 56 of the movable shade 55 is received by the solar cell module 58 to generate power. Thereby, the solar energy in the daytime can be used effectively.
- FIG. 11 is a diagram for explaining the first modification, and is a schematic front view of the light emitting element array of the second lamp unit.
- FIG. 12 is a diagram schematically illustrating a light distribution pattern in the first modification.
- the first modification includes a movable shade 55 whose width in the vertical direction is reduced.
- the movable shade 55 has a width dimension that blocks a part of the irradiation region formed by the light emitting element array 52 in the vertical direction.
- the movable shade 55 has a vertical width dimension that is smaller than the vertical width dimension of the element substrate 52a on which the semiconductor light emitting elements 52-1 to 52-13 are mounted.
- the movable shade 55 may be plate-shaped but may be a rod-shaped one.
- the headlamp control unit 20 moves based on information from the wheel speed sensor 16, the camera 18, or the navigation system 19.
- the movable shade 55 is arranged at a desired shielding position, and as shown in FIG. 12, only the vicinity of the head of the pedestrian M and the vicinity of the passenger of the vehicle C such as the oncoming vehicle can be shielded from light. . Therefore, it is possible to irradiate a wide range without unnecessary shielding while suppressing generation of illusion light to the pedestrian M or the passenger of the vehicle C.
- the luminous intensity of the portion irradiated to the pedestrian M may be increased by controlling the current to the light emitting element array 52 including the semiconductor light emitting elements 52-1 to 52-13.
- the luminous intensity of the irradiation part to the pedestrian M is increased, since the vicinity of the head of the pedestrian M is shielded by the movable shade 55, generation of illusion light for the pedestrian M can be suppressed.
- the visibility of the pedestrian M can be improved by raising the luminous intensity.
- FIG. 13 is a diagram for explaining the second modification, and is a schematic front view of the light emitting element array of the second lamp unit.
- FIG. 14 is a diagram schematically illustrating a light distribution pattern in the second modification.
- the second modification includes two movable shades 55 formed in a triangular shape. These movable shades 55 are arranged at intervals from each other, and are arranged in a state in which the corners that are acute angles face the center.
- the headlamp control unit 20 controls the moving mechanism based on information from the wheel speed sensor 16, the camera 18, or the navigation system 19, and the movable shade 55 is
- triangular shielding areas SA are formed on both sides of the road as shown in FIG.
- These shielding areas SA are gradually increased in size in the vertical direction from the center side to the outside of the road, and the lower side portion thereof is arranged along the road.
- the shielding area SA formed in this way shields the vicinity of the head of the pedestrian M in the roadside belt on both sides of the road regardless of the distance along the traveling direction. Therefore, it is possible to irradiate a wide area without unnecessary shielding while suppressing generation of illusion light to the pedestrian M in the roadside belts on both sides of the road.
- FIG. 15 is a diagram for explaining the third modification and is a schematic front view of the light emitting element array of the second lamp unit.
- FIG. 16 is a diagram schematically illustrating a light distribution pattern in the third modification.
- the third modification includes two movable shades 55 formed in a square shape. These movable shades 55 are arranged with a space between each other, and each upper side is gradually inclined downward from the central side toward the outside.
- the headlamp control unit 20 controls the moving mechanism based on information from the wheel speed sensor 16, the camera 18, or the navigation system 19, and the movable shade 55 is
- a rectangular shielding area SA is formed on both sides of the road.
- These shielding areas SA are gradually reduced in size in the vertical direction from the center side to the outside of the road, and the lower side portion thereof is inclined upward from the back side toward the near side.
- the shielding area SA formed in this way shields the vicinity of the heads of a plurality of pedestrians M standing on the roadside belt.
- FIG. 17 is a diagram for explaining the fourth modification, and is a schematic front view of the light emitting element array of the second lamp unit.
- FIG. 18 is a diagram schematically illustrating a light distribution pattern in the fourth modification.
- FIG. 19 is a diagram schematically illustrating a light distribution pattern in the fourth modification.
- FIG. 20 is a diagram schematically illustrating a light distribution pattern in the fourth modification.
- a movable shade 55 including a divided shade 55a divided into three in the horizontal direction is provided. These divided shades 55a are independently moved in the vertical direction by the headlamp control unit 20.
- the headlamp control part 20 is based on the information from the wheel speed sensor 16, the camera 18, or the navigation system 19, and a moving mechanism. And the divided shade 55a of the movable shade 55 is arranged at the shielding position, so that the shielding area SA is formed in the irradiation area SB. At this time, when the preceding vehicle C is in front of the front, the headlamp control unit 20 moves the divided shade 55a of the movable shade 55 up and down independently, thereby rearwardly moving the preceding vehicle C as shown in FIG. The cut line CL of the shielding area SA is formed.
- the driver can recognize the presence of the preceding vehicle C well, and can maintain an appropriate inter-vehicle distance from the preceding vehicle C.
- the driver can recognize the presence of the preceding vehicle C well, and can maintain an appropriate inter-vehicle distance from the preceding vehicle C.
- the headlamp control unit 20 moves only the central divided shade 55a of the movable shade 55 up and down, thereby shielding only the portion of the preceding vehicle C as shown in FIG. According to this configuration, it is possible to improve the distance visibility by irradiating a wide area by minimizing unnecessary light shielding while suppressing generation of illusion light to the passenger of the preceding vehicle C.
- the means for forming the shielding region shown in FIG. 19 is not limited to the three-part divided shade in this example, but may be one movable shade that can shield the central portion of the irradiation region.
- the headlamp control unit 20 moves the divided shade 55a of the movable shade 55 up and down independently, so that the head of the pedestrian M in the roadside zone as shown in FIG. Shade nearby. Further, the headlamp control unit 20 repeats light shielding and irradiation near the head of the pedestrian M by repeating the vertical movement of the divided shade 55 a that shields the head of the pedestrian M. Thereby, while suppressing generation
- FIG. 21 is a schematic front view of the movable shade of the second lamp unit for explaining the fifth modification.
- FIG. 22 is a diagram schematically illustrating a light distribution pattern for explaining the fifth modification.
- the modification 5 includes a movable shade 55 having a dimming portion 59.
- the light reduction unit 59 is formed of a translucent color filter colored with magenta or the like, for example, and is provided on the right side of the upper portion of the movable shade 55. In this dimming unit 59, light in a part of the wavelength region among the light from the light emitting element array 52 is absorbed.
- the headlamp control unit 20 controls the moving mechanism based on information from the wheel speed sensor 16, the camera 18, or the navigation system 19, and the movable shade 55 is By arranging at a desired shielding position, a shielding area SA is formed in front as shown in FIG.
- a dimming area GA irradiated with light that has passed through the dimming section 59 is formed on the left side in the lower part thereof.
- the dimming area GA is formed on the left side of the road and is arranged near the head of the pedestrian M in the roadside belt.
- the driver can confirm the whole body of the pedestrian M and detect it early while suppressing generation of illusion light to the pedestrian M in the roadside zone of the road.
- the color filter color of the light reducing unit 59 is set to magenta or the like, the recognizability of the face of the pedestrian M can be enhanced when light is irradiated to the face of the pedestrian M through the light reducing unit 59. .
- FIG. 23 is a schematic front view of another movable shade according to the fifth modification.
- FIG. 24 is a schematic front view of another movable shade according to the fifth modification.
- the light reduction part 59 provided in the movable shade 55 is not limited to a color filter.
- an ND (Neutral-Density) filter may be used as the dimming unit 59 as shown in FIG.
- the density gradually decreases upward. If it does in this way, the dimming area
- a plurality of hole portions 59a may be arranged as shown in FIG.
- the size of the hole portions 59a is gradually increased upward.
- the dimming area GA formed in the shielding area SA becomes gradually brighter downward, and the cut line between the shielding area SA and the dimming area GA can be blurred to reduce the uncomfortable feeling. Therefore, it is possible to make it difficult for the pedestrian M to be subjected to a rapid change in brightness caused by the pitching and the light irradiation direction changing up and down.
- FIG. 25 shows an example of the irradiation light controlled by the vehicle lamp control system 11 of the present embodiment.
- the headlight control unit 20 controls the movement of the movable shade 55 based on information from the wheel speed sensor 16, the camera 18, or the navigation system 19.
- the shielding area SA is formed. Thereby, irradiation of the light to the head of the traffic light S and the pedestrian M is suppressed, and the illusion light for the driver and the illusion light for the pedestrian M due to the reflected light of the traffic light S are suppressed.
- the headlamp control unit 20 turns off the vicinity of the oncoming vehicle C by controlling the light emitting element array 52. Thereby, the dazzling light to the passenger of the oncoming vehicle C is suppressed.
- the headlamp control unit 20 controls the light emitting element array 52 to increase the luminous intensity of the irradiation light to the left and right roadside bands. Thereby, the visibility of a roadside belt is improved. In particular, the luminous intensity of the irradiation light to the pedestrian M in the roadside zone is further increased, and the visibility of the pedestrian M is further enhanced.
- the headlamp control unit 20 first controls the moving mechanism, moves the movable shade 55 toward the shielding position, and shields the movable shade 55. Place in position.
- the headlamp control unit 20 supplies power to the semiconductor light emitting elements 52-1 to 52-13 of the light emitting element array 52, thereby turning on the semiconductor light emitting elements 52-1 to 52-13.
- the movable shade 55 is disposed at the shielding position, light is not emitted from the second lamp unit 38 to the front of the vehicle, and thus the additional light distribution pattern PA is not formed.
- the headlamp control unit 20 controls the moving mechanism, moves the movable shade 55 toward the non-shielding position, and arranges the movable shade 55 at the non-shielding position.
- the shielding area SA is reduced, and the additional light distribution pattern PA is formed by the irradiation light from the second lamp unit 38.
- the headlamp control unit 20 When a signal to turn off the second lamp unit 38 is transmitted, the headlamp control unit 20 first controls the moving mechanism, moves the movable shade 55 toward the shielding position, and shields the movable shade 55. Place in position. Then, since the movable shade 55 is disposed at the shielding position, the irradiation light from the second lamp unit 38 is blocked by the movable shade 55, and the additional light distribution pattern PA is erased.
- the headlight control unit 20 turns off the semiconductor light emitting elements 52-1 to 52-13 by stopping the power supply to the semiconductor light emitting elements 52-1 to 52-13 of the light emitting element array 52.
- the headlamp control unit 20 based on the signal from the wheel speed sensor 16, emits light emitting elements of the second lamp unit 38 when the traveling speed of the vehicle 10 exceeds a predetermined value.
- the semiconductor light emitting elements 52-1 to 52-13 of the array 52 are turned on. Thereby, the additional light distribution pattern PA is formed in front of the vehicle 10 together with the low beam light distribution pattern PL, and the front visibility is improved.
- the headlamp control unit 20 shields the movable shade 55. After being arranged at the position, power is supplied to the semiconductor light emitting elements 52-1 to 52-13 of the light emitting element array 52 to light the semiconductor light emitting elements 52-1 to 52-13.
- the headlamp control unit 20 determines that the preceding vehicle C is traveling ahead of the vehicle 10 based on information from the camera 18 with the second lamp unit 38 turned on, the moving mechanism Is controlled to move the movable shade 55 to the shielding position, and the irradiation of the preceding vehicle C by the second lamp unit 38 is suppressed. Thereby, generation
- the signboard such as a road guide and is captured by the camera 18
- the signboard such as the road guide is misrecognized as a preceding vehicle based on information from the camera 18 and is movable.
- the shade 55 may move.
- the movable shade 55 arranged at the non-shielding position is first arranged at the shielding position.
- the semiconductor light emitting elements 52-1 to 52-13 of the light emitting element array 52 are turned on.
- a shielding area SA is formed in front of the vehicle 10 by the movable shade 55. From this state, the movable shade 55 moves to the lower non-shielding position, so that the shielding area SA gradually decreases from the lower side, and the additional light distribution pattern PA gradually increases. Then, as shown in FIG.
- the additional light distribution pattern PA is formed in front of the vehicle 10 by the irradiation light of the second lamp unit 38, and the entire signboard K is irradiated with the irradiation light. Then, the light irradiated to the signboard K is reflected, the reflected light is captured by the camera 18 and the signboard K is recognized as the preceding vehicle C. Thereby, as shown in FIG.
- the movable shade 55 is largely moved upward, and the shielding area SA is formed so as to cover the signboard K.
- the irradiation area of the irradiation light is in front of the vehicle 10. It will change greatly, and there is a risk of bothering the driver.
- the movable shade 55 is connected to the semiconductor light emitting element 52-.
- the movable shade 55 is arranged at a shielding position where the light from 1 to 52-13 can be shielded. Thereafter, the semiconductor light emitting elements 52-1 to 52-13 are caused to emit light, and the movable shade 55 is moved so that the shielding range becomes small after the semiconductor light emitting elements 52-1 to 52-13 emit light.
- the irradiation range continuously changes so as to expand from a narrow state. Visibility can be enhanced while suppressing the occurrence of discomfort to the driver. In addition, the appearance of the change in the light distribution pattern can be improved. In addition, since the movable shade 55 moves from the shielding position, the area irradiated with light from the second lamp unit 38 is gradually enlarged. Therefore, compared with the case where the second lamp unit 38 is suddenly turned on, You can reduce the burden of gaze behavior by getting used to the flow of light distribution during lighting.
- the semiconductor light emitting elements 52-1 to 52-13 are caused to emit light after the movable shade 55 is disposed at the shielding position, and the semiconductor light emitting elements 52-1 to 52-13 emit light. Since the movable shade 55 is moved so that the shielding range becomes smaller later, even if the signboard K or the traffic light S is erroneously detected as the preceding vehicle C, the illumination light irradiation area of the second lamp unit 38 changes greatly. Therefore, it is possible to suppress problems that cause trouble for the driver.
- the semiconductor light emitting elements 52-1 to 52-13 are made to emit light after the movable shade 55 is arranged at the shielding position. Control is performed to move the movable shade 55 so that the shielding range becomes small after the light emitting elements 52-1 to 52-13 emit light, so that the driver can visually recognize while suppressing the occurrence of discomfort when starting high beam irradiation. Can increase the sex.
- the semiconductor light emitting elements 52-1 to 52-13 are switched from the lighting state to the unlighting state, the semiconductor light emitting elements 52-1 to 52-13 are turned off after the movable shade 55 is moved to the shielding position.
- the irradiation range continuously changes so as to gradually become smaller, so that the driver can be prevented from feeling uncomfortable even when the light is turned off. Can do.
- the appearance of the change in the light distribution pattern can be improved.
- the second lamp unit 38 is controlled to be turned off / on according to the vehicle speed, the driver feels uncomfortable when the second lamp unit 38 suddenly turns off and the driver recognizes that the second lamp unit 38 is defective.
- the irradiation range of the irradiation light of the second lamp unit 38 is gradually reduced by moving the movable shade 55 to the shielding position, so that the second lamp unit 38 is moved according to the vehicle speed.
- the second lamp unit 38 can be turned off without any sense of incongruity during the control to turn on / off.
- the movable shade 55 When the first lamp unit 36 is turned off or the first lamp unit 36 is turned off when the second lamp unit 38 is turned off, the movable shade 55 may be arranged at either the non-shielding position or the shielding position. good. Further, the power supply to the semiconductor light emitting elements 52-1 to 52-13 may be controlled so that the light emitting element array 52 of the second lamp unit 38 is gradually turned on and off. In this case, when the second lamp unit 38 is turned on, the movement of the movable shade 55 arranged at the shielding position may be started before the luminous intensity of the light emitting element array 52 reaches the target luminous intensity.
- the second lamp unit is controlled by controlling the current value supplied to the semiconductor light emitting elements 52-1 to 52-13 of the light emitting element array 52 in accordance with the traveling direction of the vehicle 10.
- Electronic swivel control is performed to change the intensity of the irradiation light of 38 according to the traveling direction of the vehicle 10.
- the headlamp control unit 20 supplies a current of a current value supplied to the semiconductor light emitting elements 52-1 to 52-13 as shown in FIG.
- the distribution is changed to the right side so as to be to the right of the traveling direction as shown in FIG.
- the headlamp control unit 20 proceeds by independently controlling the movement of the movable shade 55 of the right headlamp unit 22R and the movable shade 55 of the left headlamp unit 22L.
- the movable shade 55 of the left headlamp unit 22L that shields the left side opposite to the direction is moved toward the shielding position.
- the shielding area SA is partially formed on the upper left side opposite to the traveling direction, and the additional light distribution pattern PA is narrowed. Therefore, it is possible to suppress the burden of gaze behavior by the driver in directions other than the traveling direction of the vehicle 10, and to further improve the visibility on the right side that is the traveling direction.
- the traveling direction is determined and the electronic swivel control described above is performed.
- the light from the second lamp unit 38 is irradiated toward the right side that is the traveling direction of the vehicle 10.
- the headlamp control unit 20 moves the movable shade 55 of the left headlamp unit 22L that shields the left side opposite to the traveling direction toward the shielding position, so that the traveling direction is set as shown in FIG.
- the additional light distribution pattern PA is narrowed by partially forming a shielding area SA in the upper left portion on the opposite side.
- SYMBOLS 11 Vehicle lamp control system
- 16 Wheel speed sensor (vehicle speed sensor)
- 18 Camera (front vehicle detection sensor)
- 20 Headlamp control part (control part)
- 36 1st lamp unit (1st lamp) Unit
- 38 second lamp unit (second lamp unit)
- 48 projection lens
- 52-1 to 52-13 semiconductor light emitting element
- 55 movable shade
- 56 reflector
- 57 optical member
- 58 Solar cell module
- PA additional light distribution pattern
- PL light distribution pattern for low beam (first light distribution pattern)
Abstract
Description
ところで、上記の車両用前照灯装置では、発光素子からなるアレイがいきなり点灯して車両の前方が突然明るくなるため、運転者に対して違和感を生じさせるおそれがあった。
投影レンズと、
前記投影レンズの後方焦点近傍に配置されるとともに前記投影レンズに向けて光を出射する半導体発光素子と、
前記半導体発光素子から出射されて前記投影レンズに入射する光を遮蔽可能な遮蔽位置と前記半導体発光素子から出射されて前記投影レンズに入射する光を遮蔽しない非遮蔽位置との間を移動可能な可動シェードと、
前記半導体発光素子が消灯状態の場合、前記可動シェードを前記遮蔽位置に移動させる制御を行う制御部と、
を備える。
入射された光の少なくとも一部を透過または反射させる光学部材を備え、
前記可動シェードは、前記投影レンズと対向する部位に反射部を有し、
前記光学部材は、前記制御部が前記可動シェードを前記遮蔽位置に移動させた状態で前記投影レンズを透過して前記反射部により反射された光が入射可能な位置に配置されていても良い。
発電素子を有する太陽電池モジュールを備え、
前記可動シェードは、前記投影レンズと対向する部位に反射部を有し、
前記発電素子は、前記制御部が前記可動シェードを前記遮蔽位置に移動させた状態で前記投影レンズを透過して前記反射部により反射された光が受光可能な位置に配置されていても良い。
灯具前方に第1の配光パターンを形成するための光を照射することが可能な第1の灯具ユニットと、
半導体発光素子と、所定の方向へ移動可能に構成されるとともに移動位置に応じて前記半導体発光素子から出射された光を遮蔽する遮蔽範囲を変更することが可能な可動シェードと、を有し、前記第1の配光パターンよりも上寄りの位置に第2の配光パターンを形成するための前記半導体発光素子の光を照射することが可能な第2の灯具ユニットと、
前記半導体発光素子を消灯状態から点灯状態に切り替える際、前記可動シェードが前記半導体発光素子からの光を遮蔽することが可能な遮蔽位置に前記可動シェードを配置させた後に前記半導体発光素子を発光させ、前記半導体発光素子が発光した後に前記遮蔽範囲が小さくなるように前記可動シェードを移動させる制御を行う制御部と、を備える。
前記第2の灯具ユニットにおいて、複数の前記半導体発光素子が所定方向に並んで配列されており、複数の前記半導体発光素子からの光によって前記第2の配光パターンが形成されることが好ましい。
車両の走行速度を計測するための車速センサと、
前方車両を検出するための前方車両検出センサと、
を備え、
前記制御部は、前記走行速度が所定値を上回る場合に、前記遮蔽位置に前記可動シェードを配置させた後に前記半導体発光素子を発光させ、前記半導体発光素子が発光した後に前記遮蔽範囲が小さくなるように前記可動シェードを移動させる制御を行うことが好ましい。
前記第1の配光パターンは、ロービーム用配光パターンであり、
前記第2の配光パターンは、ハイビーム用配光パターンであることが好ましい。
前記制御部は、前記半導体発光素子を点灯状態から消灯状態に切り替える際、前記遮蔽位置に前記可動シェードを移動させた後に前記半導体発光素子を消灯させる制御を行うことが好ましい。
図1に本発明の第1実施形態に係る車両用灯具制御システム11が搭載された車両10の全体構成を模式的に示す。車両用灯具制御システム11は、前照灯装置12、統合制御部14、車輪速センサ16(車速センサの一例)、操舵角センサ17、カメラ18(前方車両検出センサの一例)、及びナビゲーションシステム19を備えている。
次に、第2実施形態に係る車両用灯具制御システム11について説明する。
図9は、第2実施形態に係る車両用灯具制御システムの前照灯ユニットの第2灯具ユニットの概略側面図である。
次に、第3実施形態に係る車両用灯具制御システム11について説明する。
図10は、第3実施形態に係る車両用灯具制御システムの前照灯ユニットの第2灯具ユニットの概略側面図である。
(変形例1)
図11は、変形例1を説明するための図であり、第2灯具ユニットの発光素子アレイの概略正面図である。図12は、変形例1における配光パターンを模式的に示す図である。
図13は、変形例2を説明するための図であり、第2灯具ユニットの発光素子アレイの概略正面図である。図14は、変形例2における配光パターンを模式的に示す図である。
図15は、変形例3を説明するための図であり、第2灯具ユニットの発光素子アレイの概略正面図である。図16は、変形例3における配光パターンを模式的に示す図である。
図17は、変形例4を説明するための図であり、第2灯具ユニットの発光素子アレイの概略正面図である。図18は、変形例4における配光パターンを模式的に示す図である。図19は、変形例4における配光パターンを模式的に示す図である。図20は、変形例4における配光パターンを模式的に示す図である。
図21は、変形例5を説明する第2灯具ユニットの可動シェードの概略正面図である。図22は、変形例5を説明する配光パターンを模式的に示す図である。
次に、第4実施形態に係る車両用灯具制御システム11について説明する。車両の基本的な構成については、図1~図7を参照して説明した第1実施形態のものと同様であり、説明は省略する。
前照灯制御部20は、第2灯具ユニット38の点灯の指令の信号が送信されると、まず、移動機構を制御し、可動シェード55を遮蔽位置へ向かって移動させ、可動シェード55を遮蔽位置へ配置させる。
また、第2灯具ユニット38の発光素子アレイ52の点消灯が緩やかになるように半導体発光素子52-1~52-13への給電を制御しても良い。この場合、第2灯具ユニット38を点灯させる際に、発光素子アレイ52の光度が目標の光度となる前に、遮蔽位置に配置させた可動シェード55の移動を開始させるようにしても良い。
本出願は、2013年9月26日出願の日本特許出願・出願番号2013-199407、2013年9月26日出願の日本特許出願・出願番号2013-199409に基づくものであり、その内容はここに参照として取り込まれる。
Claims (8)
- 投影レンズと、
前記投影レンズの後方焦点近傍に配置されるとともに前記投影レンズに向けて光を出射する半導体発光素子と、
前記半導体発光素子から出射されて前記投影レンズに入射する光を遮蔽可能な遮蔽位置と前記半導体発光素子から出射されて前記投影レンズに入射する光を遮蔽しない非遮蔽位置との間を移動可能な可動シェードと、
前記半導体発光素子が消灯状態の場合、前記可動シェードを前記遮蔽位置に移動させる制御を行う制御部と、
を備える、車両用灯具制御システム。 - 入射された光の少なくとも一部を透過または反射させる光学部材を備え、
前記可動シェードは、前記投影レンズと対向する部位に反射部を有し、
前記光学部材は、前記制御部が前記可動シェードを前記遮蔽位置に移動させた状態で前記投影レンズを透過して前記反射部により反射された光が入射可能な位置に配置されている、請求項1に記載の車両用灯具制御システム。 - 発電素子を有する太陽電池モジュールを備え、
前記可動シェードは、前記投影レンズと対向する部位に反射部を有し、
前記発電素子は、前記制御部が前記可動シェードを前記遮蔽位置に移動させた状態で前記投影レンズを透過して前記反射部により反射された光が受光可能な位置に配置されている、請求項1に記載の車両用灯具制御システム。 - 灯具前方に第1の配光パターンを形成するための光を照射することが可能な第1の灯具ユニットと、
半導体発光素子と、所定の方向へ移動可能に構成されるとともに移動位置に応じて前記半導体発光素子から出射された光を遮蔽する遮蔽範囲を変更することが可能な可動シェードと、を有し、前記第1の配光パターンよりも上寄りの位置に第2の配光パターンを形成するための前記半導体発光素子の光を照射することが可能な第2の灯具ユニットと、
前記半導体発光素子を消灯状態から点灯状態に切り替える際、前記可動シェードが前記半導体発光素子からの光を遮蔽することが可能な遮蔽位置に前記可動シェードを配置させた後に前記半導体発光素子を発光させ、前記半導体発光素子が発光した後に前記遮蔽範囲が小さくなるように前記可動シェードを移動させる制御を行う制御部と、
を備える、車両用灯具制御システム。 - 前記第2の灯具ユニットにおいて、複数の前記半導体発光素子が所定方向に並んで配列されており、複数の前記半導体発光素子からの光によって前記第2の配光パターンが形成される、請求項4に記載の車両用灯具制御システム。
- 車両の走行速度を計測するための車速センサと、
前方車両を検出するための前方車両検出センサと、
を備え、
前記制御部は、前記走行速度が所定値を上回る場合に、前記遮蔽位置に前記可動シェードを配置させた後に前記半導体発光素子を発光させ、前記半導体発光素子が発光した後に前記遮蔽範囲が小さくなるように前記可動シェードを移動させる制御を行う、請求項4または5に記載の車両用灯具制御システム。 - 前記第1の配光パターンは、ロービーム用配光パターンであり、
前記第2の配光パターンは、ハイビーム用配光パターンである、請求項4から6のいずれか一項に記載の車両用灯具制御システム。 - 前記制御部は、前記半導体発光素子を点灯状態から消灯状態に切り替える際、前記遮蔽位置に前記可動シェードを移動させた後に前記半導体発光素子を消灯させる制御を行う、請求項4から7のいずれか一項に記載の車両用灯具制御システム。
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KR102429313B1 (ko) | 2018-02-15 | 2022-08-04 | 제트카베 그룹 게엠베하 | 입사 태양 복사를 차폐하기 위한 차폐 스크린을 포함한 자동차 헤드램프 |
WO2022196584A1 (ja) * | 2021-03-16 | 2022-09-22 | 株式会社小糸製作所 | 配光制御装置、車両用灯具システムおよび配光制御方法 |
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EP3050750A4 (en) | 2017-07-05 |
US20160238210A1 (en) | 2016-08-18 |
US9951920B2 (en) | 2018-04-24 |
CN105593062A (zh) | 2016-05-18 |
JPWO2015046346A1 (ja) | 2017-03-09 |
CN105593062B (zh) | 2018-05-11 |
EP3050750A1 (en) | 2016-08-03 |
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