WO2022065162A1 - Appareil d'éclairage de véhicule - Google Patents

Appareil d'éclairage de véhicule Download PDF

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Publication number
WO2022065162A1
WO2022065162A1 PCT/JP2021/033956 JP2021033956W WO2022065162A1 WO 2022065162 A1 WO2022065162 A1 WO 2022065162A1 JP 2021033956 W JP2021033956 W JP 2021033956W WO 2022065162 A1 WO2022065162 A1 WO 2022065162A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
lamp
road surface
light
light source
Prior art date
Application number
PCT/JP2021/033956
Other languages
English (en)
Japanese (ja)
Inventor
貴彦 本多
樹生 伊東
Original Assignee
株式会社小糸製作所
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Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Publication of WO2022065162A1 publication Critical patent/WO2022065162A1/fr

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Classifications

    • 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
    • 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
    • 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
    • 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
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • 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
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • 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
    • 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
    • F21W2102/30—Fog lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/10—Position lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/35—Brake lights
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/20—Electroluminescent [EL] light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • This disclosure relates to vehicle lighting equipment.
  • a vehicle lighting device provided with an optical unit having a function of a headlight or an indicator light
  • a vehicle lighting device mounted together with the optical unit as a road surface drawing unit that irradiates a road surface with a desired drawing pattern (for example, Patent Document). 1).
  • the present disclosure provides vehicle lighting fixtures having a simple structure and a road surface drawing function.
  • a vehicle lighting fixture having a road surface drawing function in addition to the function as a headlight or a marker light, an optical unit having the function of a headlight or a marker light, and drawing on a road surface.
  • the optical unit and the road surface drawing unit are configured to include a road surface drawing unit having a pattern projection function, and the optical unit and the road surface drawing unit constitute a vehicle lamp having a road surface drawing function so as to irradiate with a common projection lens.
  • FIG. 1A is a schematic plan view of a vehicle equipped with a vehicle lamp according to the first embodiment.
  • FIG. 1B is a schematic side view of a vehicle equipped with a vehicle lamp according to the first embodiment.
  • FIG. 2 is a vertical sectional view of a vehicle lamp according to the first embodiment.
  • FIG. 3 is a schematic perspective view of a vehicle lamp according to the first embodiment.
  • FIG. 4A is an optical path diagram when the drawing light source projects a drawing pattern.
  • FIG. 4B is a plan view showing a drawing pattern projected on the road surface.
  • FIG. 5 is an explanatory diagram of light distribution projection, and shows the light distribution projected from the optical unit onto a virtual screen at a predetermined position in front of the vehicle.
  • FIG. 1A is a schematic plan view of a vehicle equipped with a vehicle lamp according to the first embodiment.
  • FIG. 1B is a schematic side view of a vehicle equipped with a vehicle lamp according to the first embodiment.
  • FIG. 2 is a vertical sectional view
  • FIG. 6 is a vertical sectional view of a vehicle lamp according to the second embodiment.
  • FIG. 7 is a schematic perspective view of a vehicle lamp according to the second embodiment.
  • FIG. 8 is a diagram illustrating a modified example of the vehicle lamp according to the present embodiment.
  • FIG. 9 is a diagram illustrating a modified example of the vehicle lamp according to the present embodiment.
  • (First Embodiment) 1A and 1B show a vehicle C equipped with a vehicle lamp 1 according to the first embodiment.
  • the vehicle lighting fixture 1 is a fog lamp mounted on the front portion of the vehicle C.
  • the vehicle lamps 1 are provided in pairs below the headlamps HL.
  • the vehicle lighting tool 1 is a headlight (auxiliary light) that is mainly lit when the vehicle C runs in snow or fog.
  • the vehicle lighting tool 1 forms white or yellow diffused light as the light distribution LD1 of the fog lamp toward the front of the vehicle C to secure the driver's view and to inform the driver of the oncoming vehicle of the presence of the vehicle. Notify.
  • the vehicle lighting tool 1 projects a drawing pattern M1 extending in a line shape consisting of three rectangles on the road surface GR in front of the vehicle C as a transmission notification display. Since the vehicle lamps 1 provided on the left and right each project a line-shaped drawing pattern M1 forward, two parallel dotted lines of light extending forward from the vehicle C serve as a locus of movement of the vehicle C.
  • the vehicle lighting tool 1 can be used for the presence of the vehicle C and the presence of the vehicle C toward a third party such as a pedestrian or an oncoming vehicle driver who is present in the traveling direction even in bad weather such as heavy fog. Clarify the course of travel and call attention.
  • the vehicle lamp 1 may be configured to blink the drawing pattern M1 at a predetermined cycle.
  • the vehicle lighting tool 1 has a road surface drawing function of projecting a predetermined drawing pattern M1 on the road surface GR in addition to the function of the conventional headlight that irradiates the light distribution LD1 of the fog lamp.
  • the vehicle lamp 1 is a fog lamp, but the configuration of the present disclosure is not limited to the fog lamp.
  • the vehicle lamp 1 includes a high beam lamp, a low beam lamp, and the like as headlights.
  • the indicator lamp a tail lamp, a stop lamp, a daylight running lamp, a clearance lamp, a turn signal lamp, an automatic operation indicator lamp, or the like may be used.
  • headlights such as high-beam lamps and low-beam lamps have a specified light distribution at a predetermined distance
  • indicator lights have a specified range of maximum luminous intensity and left-right irradiation angle. Regardless of whether it is a headlight or an indicator lamp, the form of light irradiated so as to satisfy the regulations set for each vehicle lamp is referred to as light distribution.
  • FIG. 2 is a vertical cross-sectional view of the vehicle lamp 1.
  • FIG. 3 is a schematic perspective view of the vehicle lamp 1. In FIG. 3, the housing is omitted.
  • the vehicle lamp 1 includes a lamp body 2, a lamp cover 4, a fixing member 10, a projection lens 20, a light source 30 for lamps, a light source 40 for drawing, and a diffuser lens 50. Consists of including.
  • the lamp body 2 has an opening in the front.
  • a lamp cover 4 made of a translucent resin, glass, or the like is attached to the opening of the lamp body 2.
  • the lamp body 2 and the lamp cover 4 are housings for a vehicle lamp 1, and a lamp chamber S is defined inside the lamp body 2 and the lamp cover 4.
  • the fixing member 10 is a mounting member for a light source 30 for a lamp, a light source 40 for drawing, a diffuser lens 50, and a projection lens 20, and the rear side is a heat sink 11.
  • a hole 3 is provided in the center of the back surface of the lamp body 2.
  • the fixing member 10 is housed in the light chamber S at the front thereof, and is fixed to the hole 3 with the heat sink 11 portion behind the hole 3 exposed to the outside.
  • the fixing member 10 is made of a metal member having good thermal conductivity. The heat generated by the lighting light source 30 and the drawing light source 40 is released to the outside through the heat sink 11.
  • the drawing light source 40 and the lamp light source 30 emit light when energized.
  • a semiconductor light emitting element such as an LED (Light Emitting Diode), an LD (Laser Diode), an EL (Electro Luminescence) element, a light bulb, an incandescent lamp (halogen lamp), a discharge lamp (discharge lamp), or the like is used. May be good.
  • an LED that emits white light is used as the light source 30 for the lamp and the light source 40 for drawing.
  • the drawing light source 40 includes a plurality of light emitting elements (details will be described later).
  • a protruding portion 12 projecting forward is formed above the front of the fixing member 10.
  • a drawing light source 40 mounted on the substrate is attached to the upper front surface 13 which is the front surface of the protrusion 12 with the light emitting surface facing forward.
  • a light source 30 for a lamp which is mounted on a substrate different from the light source 40 for drawing, is attached to the lower front surface 14, which is the front surface below the fixing member 10, with the light emitting surface facing forward. Since the drawing light source 40 is attached to the protrusion 12, it is arranged in front of the lamp light source 30 by the protrusion length of the protrusion 12.
  • the diffuser lens 50 is a small rectangular diffuser lens having an incident surface on the back surface and an exit surface on the front surface.
  • the diffuser lens 50 is provided in front of the light source 30 for lamps via a holder 60, and the light emitted from the light source 30 for lamps is incident from the incident surface, diffuses mainly in the left-right direction, and is emitted from the emitted surface. do.
  • the diffuser lens 50 is an optical member for forming a light distribution pattern of a fog lamp.
  • the holder 60 is attached to a flange portion 51 provided at the upper and lower edges of the diffuser lens 50 on the tip end side thereof so as not to interfere with the functions of the diffuser lens 50 and the lamp light source 30, and the rear end side thereof is a lamp light source. It is attached to the lower front surface 14 avoiding 30.
  • the projection lens 20 is a lens in which at least one of the incident surface and the reflecting surface has an aspherical shape.
  • the projection lens 20 is arranged in front of the diffuser lens 50 and the drawing light source 40 via a holder 70, and emits light from the lamp light source 30 and is diffused by the diffuser lens 50, and a drawing light source.
  • the light L1 emitted from 40 is projected forward.
  • the vehicle lighting tool 1 includes an optical unit that functions as a headlight (fog lamp) and a road surface drawing unit that functions to project a drawing pattern onto the road surface.
  • an optical unit that functions as a headlight (fog lamp) and a road surface drawing unit that functions to project a drawing pattern onto the road surface.
  • the road surface drawing unit is mainly composed of a drawing light source 40 and a projection lens 20, and the light L1 emitted from the drawing light source 40 passes through the lamp cover 4 through the projection lens 20 and reaches the road surface GR in front of the vehicle C. It is projected as a drawing pattern M1.
  • the optical unit is mainly composed of a light source 30 for lighting equipment, a diffuser lens 50, and a projection lens 20, and the light L2 emitted from the light source 30 for lighting equipment is diffused by the diffuser lens 50 to form a desired light distribution pattern for projection. It passes through the lamp cover 4 via the lens 20 and is projected as the light distribution LD1 of the fog lamp in front of the vehicle C.
  • optical unit and road surface drawing unit The projection of the light distribution LD1 and the drawing pattern M1 by the optical unit and the road surface drawing unit will be described in detail with reference to FIGS. 4A, 4B and 5.
  • FIG. 4A is an optical path diagram when the drawing light source 40 projects the drawing pattern M1.
  • FIG. 4B is a plan view showing a drawing pattern projected on the road surface.
  • FIG. 4B shows a drawing pattern projected from the vehicle lighting tool 1 mounted on the left side of the vehicle C, and the scale of the graph is the distance from the vehicle lighting tool 1 mounted on the left side of the vehicle C. ..
  • the axis is based on the optical axis Ax of the projection lens 20 of the vehicle lamp 1.
  • the drawing light source 40 includes a plurality of light emitting elements (LEDs) juxtaposed in the vertical direction with the light emitting surface as the front surface.
  • the drawing light source 40 includes three light emitting elements of a first light emitting element 41a, a second light emitting element 41b, and a third light emitting element 41c, but the number of light emitting elements may be three or more.
  • the light emitting elements 41a, 41b, and 41c are all composed of substantially squares having the same light emitting surface.
  • the lights L1a, L1b, and L1c emitted from the light emitting elements 41a, 41b, and 41c are irradiated to the road surface GR based on the light emitting surface, so that the marks M1a, M1b, and M1c are projected onto the road surface GR. Since the light emitting elements 41a, 41b, and 41c are all arranged above the optical axis Ax, the light emitted from the projection lens 20 is emitted downward from the horizontal plane and projected onto the road surface GR in front of the vehicle C. Will be done.
  • the light emitted upward from the optical axis Ax and incident on the projection lens 20 has a larger downward angle (emission angle) from the horizontal emitted from the projection lens 20.
  • the mark is projected near the vehicle C as a substantially square having a light emitting surface shape.
  • the light incident on the projection lens 20 near the optical axis Ax has a smaller emission angle from the projection lens 20, and the mark is projected by extending forward in the projection direction.
  • the emission angle in the projection lens 20 is the smallest, so that the light L1c is farther than the mark M1b and separated by a distance H2.
  • a line-shaped mark M1c extending forward is projected.
  • the light emitting elements 41a, 41b, and 41c are all arranged on the vertical surface including the optical axis Ax, and the marks M1a, M1b, and M1c are projected side by side in a line in front of the vehicle C.
  • the distance D2 between the second light emitting element 41b and the third light emitting element 41c is adjusted. Due to the difference in the emission angle of the projection lens 20, the distance D1> the distance D2 (see FIG. 4A).
  • the dotted line-shaped drawing pattern M1 composed of the marks M1a, M1b, and M1c is projected onto the road surface GR. Since the marks M1a, M1b, and M1c are separated from each other, the cognitive effect as road surface drawing is high. It is also preferable to continuously light the light emitting elements 41a, 41b, 41c to dynamically change the drawing pattern M1, and thereby the effect of the start notification to the surroundings can be enhanced.
  • FIG. 5 is an explanatory diagram of the projection of the light distribution LD1 by the optical unit.
  • FIG. 5 shows a fog lamp light distribution LD1 in which the emitted light of the light source 30 for lighting equipment is diffused by the diffuser lens 50 and projected onto a virtual screen at a predetermined position in front of the vehicle via the projection lens 20. This will be described with reference to FIGS. 2 and 5.
  • the light source 30 for the lamp is arranged near the optical axis Ax of the projection lens 20.
  • the light source 30 for a lamp is arranged slightly above the optical axis Ax of the diffuser lens 50.
  • the light source 30 for the lamp is arranged slightly above the optical axis Ax of the projection lens 20. Therefore, the light L2 incident on the diffuser lens 50 is emitted with a slight inclination below the horizontal plane.
  • the diffuser lens 50 greatly diffuses light in the left-right direction, the screen light distribution projected on the virtual screen is below the horizontal plane (H line at 0 degrees in the vertical direction) and wide in the left-right direction. It is spreading to.
  • the diffuser lens 50 is long in the left-right direction. It is a light diffusing lens that is configured in a rectangular shape and diffuses greatly in the left-right direction.
  • the rear focal point Fa of the projection lens 20 is set near the center of the emission surface of the diffuser lens 50, and the light distribution pattern formed by the diffuser lens 50 is used as the light distribution LD1 of the fog lamp in front of the vehicle C by the projection lens 20. It is projected.
  • the road surface drawing unit and the optical unit share the projection lens 20, and both the light distribution LD1 and the drawing pattern M1 are projected to the front of the vehicle C via the projection lens 20.
  • a projection lens 20 common to both units instead of using an individual projection lens in each unit, space saving can be realized in the vehicle lamp, so that the size of the vehicle lamp can be reduced.
  • the road surface drawing unit of the present embodiment adjusts the shape and arrangement of the drawing light source 40 composed of a plurality of light emitting elements 41a to 41c, and forms and projects the drawing pattern M1 using the light emitting surfaces of the light emitting elements 41a to 41c. do. Therefore, the road surface drawing unit does not require a member for forming the drawing pattern M1, and the desired drawing pattern M1 can be projected by turning on the drawing light source 40, and the simple configuration facilitates control. There is. In addition, the number of parts can be reduced to further save space in the vehicle lamp 1.
  • the formation of the drawing pattern projected on the road surface is not limited to this embodiment, and a desired drawing pattern may be formed by arranging a shade having a slit of the desired drawing pattern in front of the light source.
  • the rear focal point Fa of the projection lens 20 is located near the center of the emission surface of the diffuser lens 50, and the drawing light source 40 is arranged on the substantially vertical plane of the rear focal point Fa (see the two-dot chain line in FIG. 2). This is to prevent the two light sources having different purposes from adversely affecting each other.
  • the drawing light source 40 By arranging the drawing light source 40 on the vertical surface of the rear focus Fa, for example, the light emitted from the diffuser lens 50 is shielded by the substrate of the drawing light source 40, and the light of the drawing light source 40 is diffused. It prevents unintended light from being emitted from the diffuser lens 50 by incident on the lens 50.
  • the vertical plane is a plane including the vertical direction and the horizontal direction.
  • the light source 30 for the lamp is arranged slightly above the optical axis Ax of the diffuser lens 50. Further, the light source 30 for the lamp is arranged slightly above the optical axis Ax of the projection lens 20. Therefore, the light distribution LD1 is projected slightly downward from the horizontal plane in front of the vehicle C.
  • the drawing light source 40 is further arranged above the lamp light source 30, and is projected downward from the horizontal plane. Since the light emitted from the projection lens 20 is emitted downward from the horizontal plane, glare is prevented. Further, the projection angle is increased by adjusting the arrangement, and the drawing pattern M1 is projected at a desired proximity distance (about 1 m to 10 m) of the vehicle C. As described above, in the present embodiment, the number of overall components is reduced, the entire structure is compactly arranged, space is saved, and the functionality as a road surface drawing unit is enhanced.
  • FIG. 6 is a vertical sectional view of the vehicle lamp 101 according to the second embodiment.
  • the holder 60 to which the diffuser lens 50 is attached is omitted.
  • FIG. 7 is a perspective view of the vehicle lamp 101. In FIG. 7, the housing is omitted.
  • the vehicle lamp 101 includes a lamp light source 30, a drawing light source 40, and a fixing member 110 to which the projection lens 20 and the diffuser lens 50 are attached.
  • the fixing member 110 is not provided with a protruding portion 12, and its front surface is an inclined surface 118 that inclines from vertical to the front at a predetermined angle.
  • the light source 30 for the lamp and the light source 40 for drawing are attached to the inclined surface 118.
  • the projection lens 20 is arranged in front of the lighting light source 30 and the drawing light source 40, and is attached to the inclined surface 118 via the holder 70. Further, a diffuser lens 50 is arranged between the light source 30 for a lamp and the projection lens 20. The diffuser lens 50 is attached to the inclined surface 118 via the holder 60. The flange portion 51 of the diffuser lens 50 extends from the left and right ends of the diffuser lens 50. The holder 60 is arranged so as to sandwich the light source 30 for the lamp from the left and right, and does not interfere with the irradiation of the light source 30 for the lamp.
  • the road surface drawing unit and the optical unit are arranged substantially in the same manner as in the first embodiment, so that the same effect as in the first embodiment can be obtained.
  • the light source 30 for the lamp and the light source 40 for drawing are arranged on the same plane, they are mounted on the same substrate and attached to the inclined surface 118.
  • both the light source 30 for lamps and the light source 40 for drawing can be mounted on a common substrate.
  • the number of parts can be reduced and the mounting man-hours can be reduced accordingly, so that the work efficiency is improved.
  • FIG. 8 is a vertical cross-sectional view of the vehicle lamp 1A, which is a modification of the vehicle lamp 1.
  • the lamp light source 30 is attached to the lower surface 19 of the protrusion 12 with the light emitting surface facing down.
  • a reflector 90 whose inner surface is a light reflecting surface is arranged below the light source 30 for a lamp.
  • the optical unit of the vehicle lamp 1A includes a light source 30 for the lamp, a reflector 90, and a projection lens 20.
  • the light L2 emitted from the light source 30 for lighting equipment is reflected by the reflecting surface of the reflector 90 to form a predetermined light distribution pattern, and is irradiated to the front of the vehicle C as a light distribution LD1 of a fog lamp via a projection lens 20. Will be done.
  • other conventionally known configurations may be used for the configuration of the optical unit and the road surface drawing unit.
  • the road surface drawing unit of the vehicle lighting tool 1A is arranged at an angle corresponding to the irradiation angle of the drawing pattern M1. That is, the drawing light source 40 (upper front surface 13 for mounting) and the projection lens 20 are arranged so as to be tilted forward by the irradiation angle from the vertical.
  • the optical axis Ax of the projection lens 20 is configured to pass through the drawing light source 40, and the light emitted from the drawing light source 40 is projected onto the road surface GR as a drawing pattern M1 having a clearer outer shape.
  • FIG. 9 is a schematic plan view of a vehicle C equipped with a vehicle lamp 1B which is a modified example.
  • the vehicle lighting tool 1B is a front turn signal lamp that is mounted on the front portion of the vehicle C and functions as a marker light when the traveling direction of the vehicle C is changed to the left or right. For example, when the vehicle C moves to the right, the vehicle lighting tool 1B attached to the right side of the vehicle C forms amber diffused light as the light distribution LD2 of the turn signal lamp toward the front of the vehicle C. Then, this blinks to notify the driver of the oncoming vehicle, the vehicle driver of the traveling route, and the like that the vehicle C is moving to the right.
  • an LED having an amber emission color is used for the light source 30 for the light of the optical unit of the light for the vehicle 1B.
  • the vehicle lighting tool 1B projects a drawing pattern M1 composed of three rectangles on the road surface GR on the right front side, and causes a pedestrian or the like existing in the traveling direction to recognize the traveling path of the vehicle C and pay attention. I'm urging you.
  • Vehicle lighting equipment 1B has a road surface drawing function in addition to the function as a conventional turn signal lamp, and both irradiations are related to the purpose. Both the light distribution LD2 and the drawing pattern M1 are irradiations for the same purpose of "notifying the surroundings of the movement of the vehicle C to the right and calling attention", and the vehicle lamp 1B irradiates the contents of both functions in relation to each other. By doing, the functional effect is enhanced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Marketing (AREA)
  • Theoretical Computer Science (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un appareil d'éclairage de véhicule (1), qui comprend une fonction de rendu de surface de la route en plus d'une fonction qui sert de phare ou de feu de position. L'appareil d'éclairage de véhicule est conçu de façon à comprendre : une unité optique qui exécute la fonction d'un phare ou d'un feu de position; et une unité de rendu de surface de la route qui exécute la fonction de projection d'un motif de rendu sur une surface de la route. L'unité optique et l'unité de rendu de surface de la route exécutent toutes deux une exposition à un rayonnement au moyen d'un objectif de projection commun (20).
PCT/JP2021/033956 2020-09-23 2021-09-15 Appareil d'éclairage de véhicule WO2022065162A1 (fr)

Applications Claiming Priority (2)

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JP2020-158411 2020-09-23
JP2020158411A JP7490514B2 (ja) 2020-09-23 2020-09-23 車両用灯具

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WO2022065162A1 true WO2022065162A1 (fr) 2022-03-31

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WO2024029622A1 (fr) * 2022-08-05 2024-02-08 株式会社小糸製作所 Dispositif de dessin de surface de route pour véhicule et procédé de dessin de surface de route pour véhicule

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Publication number Priority date Publication date Assignee Title
JP2017174737A (ja) * 2016-03-25 2017-09-28 株式会社小糸製作所 車両用灯具、および当該車両用灯具を備えた車両
JP2019077348A (ja) * 2017-10-25 2019-05-23 トヨタ自動車株式会社 車両用前照灯装置
WO2019172148A1 (fr) * 2018-03-07 2019-09-12 株式会社小糸製作所 Raccord de lampe de véhicule et système de raccord de lampe de véhicule
JP2020037319A (ja) * 2018-09-04 2020-03-12 株式会社Ｊｖｃケンウッド 車両用光出力装置、光出力方法、及びプログラム

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Publication number Priority date Publication date Assignee Title
CN107435882B (zh) * 2016-05-27 2020-11-03 小丝电工株式会社 照明装置
JP6951076B2 (ja) 2016-10-14 2021-10-20 株式会社小糸製作所 光学ユニット
JP6967396B2 (ja) * 2017-08-10 2021-11-17 株式会社小糸製作所 車両用灯具
JP7017504B2 (ja) 2018-12-06 2022-02-08 トヨタ自動車株式会社 車両用前照灯
JP7454508B2 (ja) 2018-12-25 2024-03-22 株式会社小糸製作所 光学ユニット
JP2020131922A (ja) 2019-02-20 2020-08-31 株式会社小糸製作所 車両用灯具

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2017174737A (ja) * 2016-03-25 2017-09-28 株式会社小糸製作所 車両用灯具、および当該車両用灯具を備えた車両
JP2019077348A (ja) * 2017-10-25 2019-05-23 トヨタ自動車株式会社 車両用前照灯装置
WO2019172148A1 (fr) * 2018-03-07 2019-09-12 株式会社小糸製作所 Raccord de lampe de véhicule et système de raccord de lampe de véhicule
JP2020037319A (ja) * 2018-09-04 2020-03-12 株式会社Ｊｖｃケンウッド 車両用光出力装置、光出力方法、及びプログラム

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CN114251630A (zh) 2022-03-29
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