WO2022065162A1 - Vehicle lighting fixture - Google Patents

Vehicle lighting fixture 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
French (fr)
Japanese (ja)
Inventor
貴彦 本多
樹生 伊東
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 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/en

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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.

Abstract

Provided is a vehicle lighting fixture (1), which comprises a road surface rendering function in addition to a function that serves as a headlight or a marker light. The vehicle lighting fixture is configured so as to comprise: an optical unit that performs the function of a headlight or a marker light; and a road surface rendering unit that performs the function of projecting a rendering pattern on a road surface. The optical unit and the road surface rendering unit both perform irradiation with a common projection lens (20).

Description

車両用灯具Vehicle lighting
　本開示は、車両用灯具に関する。 This disclosure relates to vehicle lighting equipment.
　前照灯又は標識灯の機能を有する光学ユニットを備えた車両用灯具において、路面に所望の描画パターンを照射する路面描画ユニットも、該光学ユニットと共に搭載された車両用灯具がある（例えば特許文献１）。 In a vehicle lighting device provided with an optical unit having a function of a headlight or an indicator light, there is also 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).
日本国特開２０１６－３７２６０号公報Japanese Patent Application Laid-Open No. 2016-37260
　しかし、特許文献１の車両用灯具では、前照灯又は標識灯の機能を有する光学ユニットと、路面に所望の描画パターンを照射する路面描画ユニットとの両方を、同じ灯室内に搭載するため、筐体は大型になり、構成も複雑となる。 However, in the vehicle lighting equipment of Patent Document 1, both an optical unit having a function of a headlight or an indicator lamp and a road surface drawing unit that irradiates a road surface with a desired drawing pattern are mounted in the same lighting chamber. The housing becomes large and the configuration becomes complicated.
　本開示は、構成がシンプルで、路面描画機能を備えた車両用灯具を提供する。 The present disclosure provides vehicle lighting fixtures having a simple structure and a road surface drawing function.
　本開示のある態様では、前照灯または標識灯としての機能に加えて、路面描画機能を備えた車両用灯具であり、前照灯または標識灯の機能を有する光学ユニットと、路面への描画パターンの投影機能を有する路面描画ユニットとを含んで構成され、前記光学ユニットおよび前記路面描画ユニットは、共通の投影レンズで照射を行うように路面描画機能を備えた車両用灯具を構成した。 In one aspect of the present disclosure, it is 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.
　この態様によれば、共通の投影レンズを用いることで、ユニットごとに投影レンズを使用する必要がなく、構成がシンプルで省スペースとなる。 According to this aspect, by using a common projection lens, it is not necessary to use a projection lens for each unit, and the configuration is simple and space saving.
　本開示によれば、構成がシンプルで、路面描画機能を備えた車両用灯具を提供できる。 According to the present disclosure, it is possible to provide a vehicle lamp having a simple structure and a road surface drawing function.
図１Ａは、第１の実施形態に係る車両用灯具を搭載した車両の模式平面図である。FIG. 1A is a schematic plan view of a vehicle equipped with a vehicle lamp according to the first embodiment. 図１Ｂは、第１の実施形態に係る車両用灯具を搭載した車両の模式側面図である。FIG. 1B is a schematic side view of a vehicle equipped with a vehicle lamp according to the first embodiment. 図２は、第１の実施形態に係る車両用灯具の縦断面図である。FIG. 2 is a vertical sectional view of a vehicle lamp according to the first embodiment. 図３は、第１の実施形態に係る車両用灯具の模式斜視図である。FIG. 3 is a schematic perspective view of a vehicle lamp according to the first embodiment. 図４Ａは、描画用光源が描画パターンを投影する場合の光路図である。FIG. 4A is an optical path diagram when the drawing light source projects a drawing pattern. 図４Ｂは、路面に投影された描画パターンを示す平面図である。FIG. 4B is a plan view showing a drawing pattern projected on the road surface. 図５は、配光投影の説明図であり、光学ユニットから車両前方の所定位置の仮想スクリーンに投影される配光を示す。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. 図６は、第２の実施形態に係る車両用灯具の縦断面図である。FIG. 6 is a vertical sectional view of a vehicle lamp according to the second embodiment. 図７は、第２の実施形態に係る車両用灯具の模式斜視図である。FIG. 7 is a schematic perspective view of a vehicle lamp according to the second embodiment. 図８は、本実施形態に係る車両用灯具の変形例を説明する図である。FIG. 8 is a diagram illustrating a modified example of the vehicle lamp according to the present embodiment. 図９は、本実施形態に係る車両用灯具の変形例を説明する図である。FIG. 9 is a diagram illustrating a modified example of the vehicle lamp according to the present embodiment.
　以下、本開示の具体的な実施形態を、図面を参照しながら説明する。実施形態は、発明を限定するものではなく例示であって、実施形態に記述されるすべての特徴やその組み合わせは、必ずしも発明の本質的なものであるとは限らない。なお、各図においては、車両内のドライバー視点を基準として、車両及び車両用前照灯の各方向を（上方：下方：左方：右方：前方：後方＝Ｕｐ：Ｌｏ：Ｌｅ：Ｒｉ：Ｆｒ：Ｒｅ）として説明する。 Hereinafter, specific embodiments of the present disclosure will be described with reference to the drawings. The embodiments are not limited to the invention, but are exemplary, and all the features and combinations thereof described in the embodiments are not necessarily essential to the invention. In each figure, with reference to the driver's viewpoint in the vehicle, each direction of the vehicle and the vehicle headlights (upper: lower: left: right: front: rear = Up: Lo: Le: Ri: This will be described as Fr: Re).
　（第１の実施形態）
　図１Ａおよび図１Ｂは、第１の実施形態に係る車両用灯具１を搭載した車両Ｃを示す。 (First Embodiment)
1A and 1B show a vehicle C equipped with a vehicle lamp 1 according to the first embodiment.
　図１Ａおよび図１Ｂに示すように、車両用灯具１は、車両Ｃの前部に装着されるフォグランプである。車両用灯具１は、ヘッドランプＨＬの下方に左右一対で設けられている。 As shown in FIGS. 1A and 1B, 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.
　車両用灯具１は、主に車両Ｃが雪や霧の中を走る際に点灯される前照灯（補助灯）である。車両用灯具１は、車両Ｃ前方に向けて、フォグランプの配光ＬＤ１として白色または黄色の拡散光を形成して、ドライバーの視界を確保しつつ、対向車両の運転手等に自車の存在を知らしめる。また、車両用灯具１は、車両Ｃの発進時には、発信通知表示として、車両Ｃ前方の路面ＧＲに三連の矩形からなるライン状に伸びる描画パターンＭ１を投影する。左右に設けられた車両用灯具１が、それぞれ前方へライン状の描画パターンＭ１を投影するため、車両Ｃから前方へ向かって伸びる二本の平行な光の点線ラインが車両Ｃの移動の軌跡として投影される。これにより、車両用灯具１は、濃霧などの視界の悪い悪天候時でも、進行方向に存在する歩行者や対向車両の運転手などの第三者に向けて、車両Ｃの存在と、車両Ｃの進行経路を明らかにして、注意を促す。注意喚起の効果を高めるため、車両用灯具１は、描画パターンＭ１を所定の周期で点滅させるように構成されてもよい。 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. Further, when the vehicle C starts, 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. It is projected. As a result, 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. In order to enhance the effect of calling attention, the vehicle lamp 1 may be configured to blink the drawing pattern M1 at a predetermined cycle.
　このように、車両用灯具１は、フォグランプの配光ＬＤ１を照射するという従来の前照灯の機能に加えて、路面ＧＲに所定の描画パターンＭ１を投影するという路面描画機能も備えている。 As described above, 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.
　本実施形態では、車両用灯具１はフォグランプであったが、本開示の構成は、フォグランプに限られない例えば、車両用灯具１には、前照灯として、ハイビームランプ、ロービームランプなどが、また標識灯として、テールランプストップランプ、デイライトランニングランプ、クリアランスランプ、ターンシグナルランプ、自動運転表示ランプなどが、用いられてもよい。 In the present embodiment, the vehicle lamp 1 is a fog lamp, but the configuration of the present disclosure is not limited to the fog lamp. For example, the vehicle lamp 1 includes a high beam lamp, a low beam lamp, and the like as headlights. As 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.
　また、ハイビームランプ、ロービームランプなどの前照灯は、所定距離における配光が定められている一方、標識灯は、最大光度と左右照射角度が届く範囲のみが定められている。前照灯か標識灯を問わず、各車両用灯具として定められた規定を満たすように照射される光の形態を配光と称して説明する。 In addition, headlights such as high-beam lamps and low-beam lamps have a specified light distribution at a predetermined distance, while 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.
　（車両用灯具１の構成）
　次に、車両用灯具１の構成について説明する。図２は、車両用灯具１の縦断面図である。図３は車両用灯具１の模式斜視図である。図３においては、筐体は省略している。 (Structure of vehicle lamp 1)
Next, the configuration of the vehicle lamp 1 will be described. 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.
　図２に示すように、車両用灯具１は、ランプボディ２と、ランプカバー４と、固定部材１０と、投影レンズ２０と、灯具用光源３０と、描画用光源４０と、拡散レンズ５０とを含んで構成される。 As shown in FIG. 2, 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.
　ランプボディ２は前方に開口部を有する。ランプボディ２の開口部には、透光性を有する樹脂やガラス等で形成されたランプカバー４が取り付けられる。ランプボディ２とランプカバー４とは、車両用灯具１の筐体であり、ランプボディ２とランプカバー４の内側には灯室Ｓが画成される。 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.
　固定部材１０は、灯具用光源３０、描画用光源４０、拡散レンズ５０、および投影レンズ２０の取付け部材であり、後方側はヒートシンク１１となっている。ランプボディ２の背面中央には孔３が設けられている。固定部材１０は、前方を灯室Ｓ内に収納され、孔３から後方のヒートシンク１１部分を外部に露出した状態で、孔３に固定されている。固定部材１０は、熱伝導率のよい金属部材で構成されている。灯具用光源３０および描画用光源４０により発生した熱は、ヒートシンク１１を介して外部に放出される。 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.
　描画用光源４０および灯具用光源３０は通電されることで光を発する。発光素子として、ＬＥＤ（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ　Ｄｉｏｄｅ）、ＬＤ（Ｌａｓｅｒ　Ｄｉｏｄｅ）、ＥＬ（Ｅｌｅｃｔｒｏ　Ｌｕｍｉｎｅｓｃｅｎｃｅ）素子などの半導体発光素子や、電球、白熱灯（ハロゲンランプ）、放電灯（ディスチャージランプ）等が用いられてもよい。本実施形態においては、灯具用光源３０および描画用光源４０には、白色光を出射するＬＥＤが用いられている。描画用光源４０は複数の発光素子を含む（詳しくは後述）。 The drawing light source 40 and the lamp light source 30 emit light when energized. As the light emitting element, 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. In the present embodiment, 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).
　固定部材１０の前方上方には、前方に向かって突出した突出部１２が形成されている。突出部１２の前面である上方前面１３には、基板に装着された描画用光源４０が、発光面を前方にして取り付けられている。また、固定部材１０下方の前面である下方前面１４には、描画用光源４０とは別の基板に装着された灯具用光源３０が、発光面を前方にして取付けられている。描画用光源４０は、突出部１２に取付けられているため、突出部１２の突出長だけ、灯具用光源３０よりも前方に配置されている。 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. Further, 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.
　拡散レンズ５０は、背面を入射面、前面を出射面とした、矩形の小型拡散レンズである。拡散レンズ５０は、灯具用光源３０の前方にホルダー６０を介して設けられており、灯具用光源３０からの出射光を入射面から入射し、主に左右方向に拡散して、出射面から出射する。拡散レンズ５０は、フォグランプの配光パターンを形成するための光学部材である。ホルダー６０は、拡散レンズ５０および灯具用光源３０の機能を邪魔しないように、その先端側を拡散レンズ５０の上下の縁部に設けられたフランジ部５１に取付けられ、その後端側は灯具用光源３０を避けて、下方前面１４に取付けられている。 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.
　投影レンズ２０は、入射面、反射面の少なくとも一方が非球面形状であるレンズである。投影レンズ２０は、拡散レンズ５０および描画用光源４０の前方に、ホルダー７０を介して配置されており、灯具用光源３０から出射して、拡散レンズ５０で拡散された光Ｌ２、および描画用光源４０から出射した光Ｌ１を前方に投影する。 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.
　車両用灯具１は、前照灯（フォグランプ）としての機能を成す光学ユニットと、路面への描画パターンの投影機能を成す路面描画ユニットとを備えている。 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.
　路面描画ユニットは、主に描画用光源４０および投影レンズ２０から構成され、描画用光源４０より出射した光Ｌ１が投影レンズ２０を介して、ランプカバー４を通り、車両Ｃの前方の路面ＧＲに描画パターンＭ１として投影される。 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.
　光学ユニットは、主に灯具用光源３０、拡散レンズ５０、投影レンズ２０から構成され、灯具用光源３０より出射した光Ｌ２が、拡散レンズ５０により拡散されて所望の配光パターンに形成され、投影レンズ２０を介して、ランプカバー４を通り、車両Ｃの前方にフォグランプの配光ＬＤ１として投影される。 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.
　（光学ユニットと路面描画ユニット）
　光学ユニットと路面描画ユニットによる配光ＬＤ１と描画パターンＭ１の投影について、図４Ａ，図４Ｂおよび図５を用いて詳しく説明する。 (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.
図４Ａは、描画用光源４０が描画パターンＭ１を投影する場合の光路図である。図４Ｂは、路面に投影された描画パターンを示す平面図である。図４Ｂは、車両Ｃの左方に取付けられた車両用灯具１から投影された描画パターンを示し、グラフの目盛りは車両Ｃの左方に取付けられた車両用灯具１からの距離となっている。軸は同車両用灯具１の投影レンズ２０の光軸Ａｘを基準としている。 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.
　図４Ａに示すように、描画用光源４０は、発光面を前面として、上下方向に並置される発光素子（ＬＥＤ）を複数備える。本実施形態では、描画用光源４０は、第１発光素子４１ａ，第２発光素子４１ｂ，第３発光素子４１ｃの三つの発光素子を備えるが、発光素子は３以上であってもよい。 As shown in FIG. 4A, 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. In the present embodiment, 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.
　発光素子４１ａ，４１ｂ，４１ｃは全て発光面が同一の略正方形で構成される。各発光素子４１ａ，４１ｂ，４１ｃから出射した光Ｌ１ａ，Ｌ１ｂ，Ｌ１ｃは、それぞれ発光面を基にして路面ＧＲに照射されることで、マークＭ１ａ，Ｍ１ｂ，Ｍ１ｃが路面ＧＲに投影される。発光素子４１ａ，４１ｂ，４１ｃは、全て光軸Ａｘよりも上方に配置されているため、投影レンズ２０から出射した光は、水平面よりも下方に向かって出射され、車両Ｃ前方の路面ＧＲに投影される。各発光素子から出射して投影レンズ２０に入射した光において、光軸Ａｘから上方に離れて投影レンズ２０に入射した光ほど、投影レンズ２０から出射する水平からの下方角度（出射角度）が大きくなり、マークは車両Ｃ近くに発光面形状の略正方形として投影される。逆に、光軸Ａｘの近くで投影レンズ２０に入射した光ほど、投影レンズ２０からの出射角度が小さくなり、マークは投影方向である前方に長く伸びて投影される。 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. In the light emitted from each light emitting element and incident on the projection lens 20, 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. On the contrary, 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.
　即ち、光軸Ａｘから最も離れた上方に配置される第１発光素子４１ａから出射した光Ｌ１ａが、投影レンズ２０を介して路面ＧＲに照射されると、車両Ｃの近傍（１ｍ付近）に略正方形なマークＭ１ａが投影される。また、第１発光素子４１ａの下方に配置される第２発光素子４１ｂから光Ｌ１ａが出射されると、投影レンズ２０における出射角度が光Ｌ１ａよりも小さいため、マークＭ１ａよりも遠方（前方）に、距離Ｈ１だけ離隔して投影方向（前方）に長い略長方形のマークＭ１ｂが投影される。さらに、最も光軸Ａｘに近くに配置される第３発光素子から光Ｌ１ｃ出射が出射されると、投影レンズ２０における出射角度は最も小さいため、マークＭ１ｂよりも遠方に、距離Ｈ２だけ離隔して前方に長く伸びるライン状のマークＭ１ｃが投影される。 That is, when the light L1a emitted from the first light emitting element 41a arranged above the optical axis Ax is irradiated to the road surface GR via the projection lens 20, the vicinity of the vehicle C (near 1 m) is abbreviated. A square mark M1a is projected. Further, when the light L1a is emitted from the second light emitting element 41b arranged below the first light emitting element 41a, the emission angle in the projection lens 20 is smaller than the light L1a, so that the light L1a is farther (forward) than the mark M1a. A long substantially rectangular mark M1b is projected in the projection direction (forward) at a distance of H1. Further, when the light L1c is emitted from the third light emitting element arranged closest to the optical axis Ax, 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.
　発光素子４１ａ，４１ｂ，４１ｃは全て、光軸Ａｘを含む鉛直面上に配置されており、マークＭ１ａ，Ｍ１ｂ，Ｍ１ｃは、車両Ｃの前方にライン状に並んで投影される。投影されるマークＭ１ａ，Ｍ１ｂ，Ｍ１ｃが重ならず、互いの間隔の距離Ｈ１，Ｈ２（図４Ｂ参照）が等しくなるように、第１発光素子４１ａと第２発光素子４１ｂとの距離Ｄ１と、第２発光素子４１ｂと第３発光素子４１ｃとの距離Ｄ２とは調整されている。なお、投影レンズ２０における出射角度の違いから、距離Ｄ１＞距離Ｄ２となっている（図４Ａ参照）。 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 D1 between the first light emitting element 41a and the second light emitting element 41b so that the projected marks M1a, M1b, and M1c do not overlap and the distances H1 and H2 (see FIG. 4B) are equal to each other. 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).
　上記構成により、マークＭ１ａ，Ｍ１ｂ，Ｍ１ｃから成る点線ライン状の描画パターンＭ１が路面ＧＲに投影される。マークＭ１ａ，Ｍ１ｂ，Ｍ１ｃが離隔していることから、路面描画としての認知効果が高い。発光素子４１ａ，４１ｂ，４１ｃを連続的に点灯させて描画パターンＭ１を動的に変化させても好ましく、これにより周囲への発進通知の効果を高めることができる。 With the above configuration, 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.
　図５は光学ユニットによる配光ＬＤ１の投影の説明図である。図５は灯具用光源３０の出射光が拡散レンズ５０で拡散されて投影レンズ２０を介して車両前方の所定位置の仮想スクリーンに投影されるフォグランプの配光ＬＤ１を示す。図２および図５を用いて説明する。 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.
　灯具用光源３０は、投影レンズ２０の光軸Ａｘ上近傍に配置されている。例えば、灯具用光源３０は拡散レンズ５０の光軸Ａｘよりも僅かに上方に配置されている。さらに、灯具用光源３０は投影レンズ２０の光軸Ａｘよりも僅かに上方に配置されている。このため、拡散レンズ５０に入射した光Ｌ２は、水平面よりも僅かに下方に傾いて出射される。前述の通り、拡散レンズ５０は左右方向に光を大きく拡散することから、仮想スクリーンに投影されるスクリーン配光は、水平面（上下方向０度のＨ線）よりも下方に、かつ左右方向に広角に広がっている。 The light source 30 for the lamp is arranged near the optical axis Ax of the projection lens 20. For example, the light source 30 for a 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 L2 incident on the diffuser lens 50 is emitted with a slight inclination below the horizontal plane. As described above, since 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.
　法規上、フォグランプの配光は水平から下方に１度程度傾けられ、かつ左右方向に大きな照射角度が求められており、これを満足する配光を形成するため、拡散レンズ５０は左右方向に長い矩形形状に構成され、左右方向に大きく拡散させる光拡散レンズとなっている。投影レンズ２０の後方焦点Ｆａは、拡散レンズ５０の出射面中央付近に設定されており、拡散レンズ５０で形成された配光パターンは、投影レンズ２０により車両Ｃの前方にフォグランプの配光ＬＤ１として投影される。 According to the law, the light distribution of the fog lamp is tilted downward by about 1 degree from the horizontal, and a large irradiation angle is required in the left-right direction. In order to form a light distribution that satisfies this, 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.
　上記のように、路面描画ユニットと光学ユニットは、投影レンズ２０を共有しており、配光ＬＤ１も描画パターンＭ１も投影レンズ２０を介して車両Ｃ前方に投影される。それぞれのユニットで個別の投影レンズを用いず、両ユニットに共通の投影レンズ２０を用いることで、車両用灯具内において省スペース化を実現できるので、車両用灯具のサイズを小さくすることができる。 As described above, 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. By using 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.
　本実施形態の路面描画ユニットは、複数の発光素子４１ａ～４１ｃから成る描画用光源４０の形状と配置を調整し、発光素子４１ａ～４１ｃの発光面を利用して描画パターンＭ１を形成して投影する。そのため、路面描画ユニットは、描画パターンＭ１を形成するための部材が不要で、描画用光源４０の点灯により所望の描画パターンＭ１を投影することができ、シンプルな構成で、制御が容易となっている。また、部品数を削減して車両用灯具１内における更なる省スペースを実現できる。 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.
　路面に投影する描画パターンの形成においては、本実施形態に限らず、光源の前に所望の描画パターンのスリットを有するシェードを配置することで、所望の描画パターンが形成されてもよい。 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.
　投影レンズ２０の後方焦点Ｆａは拡散レンズ５０の出射面中心付近に位置しており、描画用光源４０はこの後方焦点Ｆａの略鉛直面上に配置される（図２の二点鎖線参照）。これは目的の異なる二つの光源があることで互いに悪影響を与えることを抑制するためである。描画用光源４０を後方焦点Ｆａの鉛直面上に配置することで、例えば、拡散レンズ５０から出射した光が描画用光源４０の基板に遮光されること、また、描画用光源４０の光が拡散レンズ５０に入射して拡散レンズ５０から意図しない光が出射されることを防止している。
　なお、鉛直面は、上下方向と左右方向とを含む平面である。 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. 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.
　灯具用光源３０は拡散レンズ５０の光軸Ａｘよりも僅かに上方に配置されている。さらに、灯具用光源３０は投影レンズ２０の光軸Ａｘよりも僅かに上方に配置されている。このため、配光ＬＤ１は、水平面から僅かに下方に向かって車両Ｃ前方に投影される。描画用光源４０は、さらに灯具用光源３０の上方に配置されており、水平面より下方に向かって投影される。投影レンズ２０からの出射光は水平面よりも下方に向かって出射するため、グレア防止となる。また配置の調整により投影角度を大きくして車両Ｃの所望の近傍距離（１ｍ～１０ｍ程度）に描画パターンＭ１を投影している。このように本実施形態では、全体の構成要素を少なくし、全体をコンパクトにまとめて配置し、省スペースとし、かつ路面描画ユニットとしての機能性も高めている。 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.
　（第２の実施形態）
　次に、第２の実施形態について図６および図７を用いて説明する。第１の実施形態と同等の構成をもつものは、同じ符号を付して説明を省略する。図６は、第２の実施形態に係る車両用灯具１０１の縦断面図である。図６においては、拡散レンズ５０を取付けするホルダー６０は省略されている。図７は車両用灯具１０１の斜視図である。図７においては、筐体は省略されている。 (Second embodiment)
Next, the second embodiment will be described with reference to FIGS. 6 and 7. Those having the same configuration as that of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. FIG. 6 is a vertical sectional view of the vehicle lamp 101 according to the second embodiment. In FIG. 6, 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.
　車両用灯具１０１は、灯具用光源３０と描画用光源４０、および投影レンズ２０と拡散レンズ５０を取付けする固定部材１１０を備える。固定部材１１０は、第１の実施形態の固定部材１０と異なり、突出部１２は設けられておらず、その前面は鉛直から前方へ所定の角度で傾斜する傾斜面１１８となっている。灯具用光源３０および描画用光源４０は傾斜面１１８に取付けされている。 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. Unlike the fixing member 10 of the first embodiment, 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.
　投影レンズ２０は、灯具用光源３０および描画用光源４０の前方に配置され、ホルダー７０を介して傾斜面１１８に取付けられている。また、灯具用光源３０と投影レンズ２０との間に拡散レンズ５０が配置されている。拡散レンズ５０は、傾斜面１１８にホルダー６０を介して取付けられている。拡散レンズ５０のフランジ部５１は、拡散レンズ５０の左右端部から延在している。ホルダー６０は、灯具用光源３０を左右から挟むようにして配置されており、灯具用光源３０の照射を邪魔しない。 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.
　上記構成により、路面描画ユニットおよび光学ユニットは、第１の実施形態とほぼ同等に配置されるため、第１の実施形態と同等の効果を得ることができる。ここで、灯具用光源３０と描画用光源４０とは、同一平面に配置されるため、同一の基板に実装されて、傾斜面１１８に取り付けられている。灯具用光源３０および描画用光源４０を同一平面に取付けすることで、共通の基板に灯具用光源３０と描画用光源４０の両方を実装できる。これにより、部品点数の削減と、それに伴う取付工数の削減を実現できるので、作業の効率が向上する。 With the above configuration, 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. Here, since 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. By mounting the light source 30 for lamps and the light source 40 for drawing on the same plane, both the light source 30 for lamps and the light source 40 for drawing can be mounted on a common substrate. As a result, the number of parts can be reduced and the mounting man-hours can be reduced accordingly, so that the work efficiency is improved.
　（変形例）
　本開示の好適な実施形態を説明したが、本発明は上記構成に限られない。以下、図８および図９に変形例を示す。 (Modification example)
Although preferred embodiments of the present disclosure have been described, the present invention is not limited to the above configuration. Hereinafter, modifications are shown in FIGS. 8 and 9.
　図８は車両用灯具１の変形例である車両用灯具１Ａの縦断面図である。車両用灯具１Ａにおいて、灯具用光源３０は、突出部１２の下面１９に、発光面を下にして取付けられている。灯具用光源３０の下方には、内面が光の反射面であるリフレクター９０が配置されている。車両用灯具１Ａの光学ユニットは、灯具用光源３０、リフレクター９０、および投影レンズ２０を備える。灯具用光源３０から出射した光Ｌ２は、リフレクター９０の反射面で反射されることで所定の配光パターンに形成され、投影レンズ２０を介して、車両Ｃの前方にフォグランプの配光ＬＤ１として照射される。このように、光学ユニットや路面描画ユニットの構成には、他の従来周知の構成を用いても良い。 FIG. 8 is a vertical cross-sectional view of the vehicle lamp 1A, which is a modification of the vehicle lamp 1. In the vehicle lamp 1A, the lamp light source 30 is attached to the lower surface 19 of the protrusion 12 with the light emitting surface facing down. Below the light source 30 for a lamp, a reflector 90 whose inner surface is a light reflecting surface is arranged. 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. As described above, other conventionally known configurations may be used for the configuration of the optical unit and the road surface drawing unit.
　また、車両用灯具１Ａの路面描画ユニットは、描画パターンＭ１の照射角度分だけ傾いて配置されている。即ち、描画用光源４０（取付け用の上方前面１３）および投影レンズ２０は、鉛直から照射角度分だけ前方へ傾いて配置されている。投影レンズ２０の光軸Ａｘは描画用光源４０を通るように構成されており、描画用光源４０から照射した光は、外形をより明確とした描画パターンＭ１として路面ＧＲに投影される。 Further, 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.
　図９は、変形例である車両用灯具１Ｂを搭載した車両Ｃの概略平面図である。車両用灯具１Ｂは、車両Ｃの前部に装着され、車両Ｃの左右への進行方向の変更時に標識灯として機能するフロントターンシグナルランプである。例えば、車両Ｃが右方へ移動する際には、車両Ｃの右方に取付けられた車両用灯具１Ｂが、車両Ｃ前方に向けてターンシグナルランプの配光ＬＤ２としてアンバー色の拡散光を形成して、これを点滅させ、車両Ｃが右方へ移動することを対向車両の運転手や進行経路の車両運転手等に知らしめる。このため、車両用灯具１Ｂの光学ユニットの灯具用光源３０には、発光色がアンバー色のＬＥＤが用いられている。同時に、車両用灯具１Ｂは、前方右方の路面ＧＲに３連の矩形からなる描画パターンＭ１を投影し、進行方向に存在する歩行者などに、車両Ｃの進行経路を認識させて、注意を促している。 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. Therefore, 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. At the same time, 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.
　車両用灯具１Ｂは、従来のターンシグナルランプとしての機能に加えて、路面描画機能も備えており、両照射は目的を関連させた内容となっている。配光ＬＤ２も描画パターンＭ１も、「周囲に車両Ｃの右方への移動を知らしめて注意を促す」という同一目的の照射であり、車両用灯具１Ｂは、両機能の内容を関連させて照射を行うことで、機能効果を高めている。 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.
　以上、本開示の好ましい実施形態について述べたが、上記の実施形態は本開示の一例であり、これらを当業者の知識に基づいて組み合わせることが可能であり、そのような形態も本開示の範囲に含まれる。 Although the preferred embodiments of the present disclosure have been described above, the above-described embodiments are examples of the present disclosure, and these can be combined based on the knowledge of those skilled in the art, and such embodiments are also within the scope of the present disclosure. include.
　本出願は、２０２０年９月２３日に出願された日本国特許出願（特願２０２０－１５８４１１号）に開示された内容を適宜援用する。 This application appropriately incorporates the contents disclosed in the Japanese patent application (Japanese Patent Application No. 2020-158411) filed on September 23, 2020.

Claims (5)

  1. 　前照灯または標識灯としての機能に加えて、路面描画機能を備えた車両用灯具であり、
    　前照灯または標識灯の機能を有する光学ユニットと、路面への描画パターンの投影機能を有する路面描画ユニットとを含んで構成され、
    　前記光学ユニットおよび前記路面描画ユニットは、共通の投影レンズで照射を行う、
    　車両用灯具。     In addition to functioning as a headlight or indicator light, it is a vehicle lighting fixture with a road surface drawing function.
    It is configured to include an optical unit having a function of a headlight or an indicator light and a road surface drawing unit having a function of projecting a drawing pattern on a road surface.
    The optical unit and the road surface drawing unit irradiate with a common projection lens.
    Vehicle lighting equipment.
  2. 　前記光学ユニットは、前記投影レンズの光軸上近傍に配置され、前記路面描画ユニットは、前記光学ユニットの上方に配置される、
    　請求項１に記載の車両用灯具。     The optical unit is arranged near the optical axis of the projection lens, and the road surface drawing unit is arranged above the optical unit.
    The vehicle lamp according to claim 1.
  3. 　前記光学ユニットの光源と、前記路面描画ユニットの光源とは、共通の基板に実装される、
    　請求項１または請求項２に記載の車両用灯具。     The light source of the optical unit and the light source of the road surface drawing unit are mounted on a common substrate.
    The vehicle lamp according to claim 1 or 2.
  4. 　前記光学ユニットは、所望の配光を形成するための拡散レンズを備え、
    　前記拡散レンズと、前記路面描画ユニットの光源とは、略同一の鉛直面上に配置される、
    　請求項１～請求項３のいずれか一項に記載の車両用灯具。     The optical unit comprises a diffuser lens for forming the desired light distribution.
    The diffuser lens and the light source of the road surface drawing unit are arranged on substantially the same vertical plane.
    The vehicle lamp according to any one of claims 1 to 3.
  5. 　前記光学ユニットおよび前記路面描画ユニットは、照射目的を関連させた照射を行う、
    　請求項１～請求項４のいずれか一項に記載の車両用灯具。     The optical unit and the road surface drawing unit perform irradiation related to the irradiation purpose.
    The vehicle lamp according to any one of claims 1 to 4.
PCT/JP2021/033956 2020-09-23 2021-09-15 Vehicle lighting fixture WO2022065162A1 (en)

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JP2017174737A (en) * 2016-03-25 2017-09-28 株式会社小糸製作所 Vehicular lighting fixture and vehicle including vehicular lighting fixture
JP2019077348A (en) * 2017-10-25 2019-05-23 トヨタ自動車株式会社 Headlamp device for vehicle
WO2019172148A1 (en) * 2018-03-07 2019-09-12 株式会社小糸製作所 Vehicle lamp fitting and vehicle lamp fitting system
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