WO2024009923A1 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
WO2024009923A1
WO2024009923A1 PCT/JP2023/024547 JP2023024547W WO2024009923A1 WO 2024009923 A1 WO2024009923 A1 WO 2024009923A1 JP 2023024547 W JP2023024547 W JP 2023024547W WO 2024009923 A1 WO2024009923 A1 WO 2024009923A1
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WO
WIPO (PCT)
Prior art keywords
lamp
light
light source
vehicle
region
Prior art date
Application number
PCT/JP2023/024547
Other languages
French (fr)
Japanese (ja)
Inventor
智之 渡邉
渉平 多田
直樹 松本
圭佑 磯谷
由希子 北澤
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 WO2024009923A1 publication Critical patent/WO2024009923A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • 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
    • F21W2103/60—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
    • 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
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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

  • the present invention relates to a vehicle lamp equipped with a light-transmitting member.
  • vehicle lamps have been known to include a light source and a translucent member disposed on the front side of the lamp.
  • ⁇ Patent Document 1'' describes that as such a vehicle lamp, in addition to its original function of notifying the surroundings of the driver's intention (specifically, the intention of the vehicle to turn left or right, etc.) by lighting it, A front turn signal lamp is described that has the function of illuminating the road surface near the vehicle.
  • the translucent member of the vehicle lamp described in this "Patent Document 1" includes a central region located in front of the lamp of the light source and a peripheral region located around the central region, and the central region is away from the light source.
  • the lens is configured as a lens section that deflects and controls the emitted light from the light source, and its surrounding area consists of an incident surface that allows the emitted light from the light source to enter, and a total reflection surface that totally reflects the light incident from this incident surface toward the front of the lamp. It has a configuration including a surface and an output surface that emits the light totally reflected by the total reflection surface toward the front of the lamp.
  • Patent Document 1 Like the vehicle lamp described in the above-mentioned "Patent Document 1", by providing the lamp with a road illumination function in addition to its original function as a front turn signal lamp, it is possible to enhance the notification function to the surroundings. Become.
  • Patent Document 1 in order to illuminate the road surface, the light is totally reflected twice on both the front and rear surfaces in the peripheral area of the transparent member, and then is emitted. , the transparent member becomes partially thick.
  • the present invention has been made in view of the above circumstances, and it is possible to provide a road illumination function in a vehicle lamp equipped with a light source and a transparent member without making the transparent member thick.
  • the purpose of the present invention is to provide a vehicle lamp that can be used in a vehicle.
  • the present invention aims to achieve the above object by devising the structure of the light-transmitting member.
  • the vehicle lamp according to the present invention is A vehicle lamp comprising a light source and a transparent member disposed on the front side of the lamp of the light source,
  • the light-transmitting member includes a center region located in front of the lamp of the light source, and a peripheral region located around the center region,
  • the central region is configured as a lens portion that deflects and controls the light emitted from the light source
  • the peripheral area includes an entrance surface that receives the light emitted from the light source, a total reflection surface that totally reflects the light that has entered from the entrance surface toward the front of the lamp, and a total reflection surface that reflects the light that has been totally reflected by the total reflection surface toward the front of the lamp.
  • the light transmitting member is configured such that a region located diagonally downward in front of the lamp with respect to the light source is configured as a road illumination lens portion that deflects and controls the emitted light from the light source to diagonally downwardly in front of the lamp. This is a characteristic feature.
  • vehicle lamp is not particularly limited, and for example, a front turn signal lamp, a backup lamp, etc. can be adopted.
  • vehicle lamp The type of vehicle to which the above-mentioned "vehicle lamp” is installed is not particularly limited, and for example, a two-wheeled vehicle, a four-wheeled vehicle, etc. can be adopted.
  • the type of the above-mentioned "light source” is not particularly limited, and for example, a light emitting diode, an incandescent bulb, a laser diode, etc. can be adopted.
  • the above-mentioned "road surface illumination lens section” is not particularly limited in its specific position as long as it is disposed in an area diagonally downward in front of the lamp with respect to the light source.
  • the light source when viewed from the front of the lamp, The light source may be placed directly below the light source, or may be placed at a position shifted from right below the light source in the left-right direction.
  • the specific configuration of the above-mentioned "road illumination lens section” is not particularly limited as long as it is configured to deflect and control the light emitted from the light source diagonally downward in front of the lamp.
  • the vehicular lamp according to the present invention includes a light transmitting member disposed on the front side of the light source including a central region located in front of the light source and a peripheral region located around the center region, and The central area is configured as a lens part that deflects and controls the light emitted from the light source, and the surrounding area is an entrance surface that receives the light emitted from the light source and directs the light that enters from this entrance surface toward the front of the lamp.
  • the structure includes a total reflection surface that completely reflects the light from the total reflection surface, and an output surface that emits the light totally reflected by the total reflection surface toward the front of the lamp. It can efficiently illuminate the front. Thereby, it is possible to notify the surroundings of the driver's intention (for example, the intention of the vehicle to turn left or right, etc.) by turning on the vehicle lamp.
  • a region located diagonally downward in front of the lamp with respect to the light source is configured as a road surface illumination lens portion that deflects and controls the emitted light from the light source toward the road surface diagonally downward in front of the lamp. Therefore, the vehicular lamp can have a road surface illumination function of illuminating the road surface near the vehicle with the light emitted from the road surface illumination lens section, thereby enhancing the notification function to the surroundings.
  • the road illumination lens part is configured to deflect and control the light emitted from the light source, so by adding the road illumination function to the light-transmitting member, the light-transmitting member can be used like the conventional vehicle lamp described above. This can prevent the wall from becoming partially thick.
  • a vehicle lamp equipped with a light source and a light-transmitting member can have a road illumination function without making the light-transmitting member thick.
  • the road surface illumination lens section is further configured to deflect and control the emitted light from the light source toward the vehicle turning direction, when the vehicle lamp is a front turn signal lamp, etc.
  • the driver's intention that is, the intention of the vehicle to turn right or left, etc.
  • the surroundings more clearly.
  • the road surface illumination lens portion is further formed at the boundary position between the central region and the peripheral region, the emitted light from the light source can be efficiently irradiated toward the road surface in front of the vehicle.
  • the light-transmitting member further includes a front surface of an area located diagonally below the front of the lamp than the road illumination lens part in the peripheral area, which is displaced toward the rear of the lamp than the front of the general area in the peripheral area.
  • the light-transmitting member is further formed with a boss portion extending toward the rear of the lamp on the rear surface of an area located diagonally below the front of the lamp than the road illumination lens portion in the peripheral area, While the light distribution function of the vehicle lamp is not impaired, the light-transmitting member can be easily positioned and supported with respect to the lamp body or the like.
  • FIG. 1 A front view showing a vehicle lamp according to an embodiment of the present invention II-II cross-sectional view in Figure 1 Cross-sectional view along line III-III in Figure 1 IV direction arrow view in Figure 2
  • FIG. 1 is a front view showing a vehicle lamp 10 according to an embodiment of the present invention.
  • 2 is a sectional view taken along the line II--II in FIG. 1
  • FIG. 3 is a sectional view taken along the line III--III in FIG.
  • the vehicle lamp 10 is a front turn signal lamp disposed at the front left part of a vehicle (specifically, a two-wheeled vehicle (see FIG. 5)), and has a lamp body. 12 and a transparent transparent cover 14 attached to the front end opening of the lamp body 12, a lamp unit 20 having an optical axis Ax extending in the front-rear direction of the lamp body is housed. It has become.
  • the lamp unit 20 includes a light source 30 placed on the optical axis Ax, a transparent member 40 placed on the front side of the lamp of this light source 30, and a holder 50 placed on the rear side of these lamps. It becomes.
  • the light source 30 is composed of a light emitting element (specifically, a light emitting diode that emits light in an amber color), and is mounted on the substrate 32 with its light emitting surface 30a facing toward the front of the lamp.
  • the substrate 32 is supported by the light-transmitting member 40 so as to extend along a vertical plane perpendicular to the optical axis Ax.
  • the light-transmitting member 40 is a colorless and transparent resin member (for example, an injection molded product of acrylic (PMMA) resin, polycarbonate (PC) resin, etc.), and has a circular outer shape centered on the optical axis Ax when viewed from the front of the lamp. have.
  • This light-transmitting member 40 is supported by a holder 50, and this holder 50 is supported by the lamp body 12.
  • the light-transmitting member 40 includes a central region 40A centered on the optical axis Ax, a peripheral region 40B located around the central region 40A, an outer annular region 40C located around the peripheral region 40B, and a central region 40A centered on the optical axis Ax. It includes a road surface illumination lens section 40D located diagonally lower left (diagonally lower right when viewed from the front of the lamp) and a rear displacement region 40E located diagonally lower left of the road surface illumination lens section 40D.
  • the central region 40A, the peripheral region 40B, and the outer circumferential annular region 40C have concentric external shapes centered on the optical axis Ax when viewed from the front of the lamp, but the road illumination lens section 40 and the rear displacement region 40E are located The part that is formed is missing.
  • the central region 40A is configured as a lens portion that deflects and controls the light emitted from the light source 30.
  • a front surface 40Aa is formed in a convex curved shape centered on the optical axis Ax
  • a rear surface 40Ab is formed in a planar shape extending along a vertical plane orthogonal to the optical axis Ax.
  • the front surface 40Aa of the central region 40A has a horizontally oblong ellipsoidal surface shape, which allows the light emitted from the light source 30 to be emitted toward the front of the lamp as light that spreads more horizontally than vertically. It is designed to let you do so.
  • the peripheral area 40B includes an entrance surface 40B1 through which the light emitted from the light source 30 enters, a total reflection surface 40B2 through which the light incident from the entrance surface 40B1 is totally reflected toward the front of the lamp, and a total reflection surface 40B2 on which the light is totally reflected. and an output surface 40B3 that outputs the light toward the front of the lamp.
  • the entrance surface 40B1 is constituted by an annular surface that protrudes toward the rear side of the lamp from the outer peripheral edge of the rear surface 40Ab of the central region 40A.
  • the entrance surface 40B1 is formed in an annular shape with a convex curved cross-section, so that the light emitted from the light source 30 enters as substantially parallel light within a plane including the optical axis Ax.
  • the total reflection surface 40B2 is formed in a conical shape that spreads toward the front of the lamp with the optical axis Ax as the center, so that the reflected light from the incident surface 40B1 remains approximately parallel in a plane that includes the optical axis Ax. The light is reflected in the direction in front of the light fixture.
  • the exit surface 40B3 has a configuration in which a plurality of convex spherical lens elements 40B3s are allocated to a plurality of segments that are segmented concentrically around the optical axis Ax and further segmented radially. At this time, the emission surface 40B3 is divided into three sections such that the segment located on the outer circumferential side is displaced toward the front side of the lamp.
  • the output surface 40B3 is configured to output the reflected light that has arrived from the input surface 40B1 as substantially parallel light to the front of the lamp as light that is diffused in the radial direction and the circumferential direction in each lens element 40B3s.
  • the outer peripheral annular region 40C is formed to extend in a substantially flat plate shape along a vertical plane perpendicular to the optical axis Ax.
  • This outer circumferential annular region 40C is a decorative region and does not have a control function for the light emitted from the light source 30.
  • the rear surface 40Cb of the outer circumferential annular region 40C is formed in a planar shape, and an annular flange portion 40Cc that protrudes toward the rear of the lamp is formed on its outer circumferential edge.
  • the front surface 40Ca of the outer circumferential annular region 40C has a configuration in which a plurality of convex spherical lens elements 40Cs are allocated to a plurality of segments concentrically and radially divided around the optical axis Ax.
  • Each lens element 40Cs has a smaller size than each lens element 40B3s forming the exit surface 40B3 of the peripheral region 40B.
  • the road illumination lens section 40D is configured to deflect and control the light emitted from the light source 30 toward the road surface diagonally downward in front of the lamp.
  • the road surface illumination lens section 40D is configured as a condensing lens having an optical axis Ax1 extending diagonally downward to the left with respect to the front direction of the lamp so as to pass through the light emission center of the light source 30. It is configured to illuminate the road surface located diagonally downward to the left with respect to the front direction of the lamp. That is, the road surface illumination lens section 40D is configured to deflect and control the emitted light from the light source 30 toward the vehicle turning direction when the vehicle turns left.
  • the road surface illumination lens section 40D is formed at the boundary between the central region 40A and the peripheral region 40B.
  • This road illumination lens section 40D is composed of a plano-convex lens having a spherical front surface 40Da and a flat rear surface 40Db, and its optical axis Ax1 is at an angle of about 30 to 50 degrees (for example, about 40 degrees) with respect to the optical axis Ax. It extends to form an included angle.
  • the rear displacement region 40E is a decorative region and does not have a control function for the light emitted from the light source 30.
  • This rear displacement region 40E is located diagonally downward to the left from the road illumination lens portion 40D, with its front surface 40Ea being displaced toward the rear of the lamp relative to the exit surface 40B3 of the peripheral region 40B (that is, the front surface of the general region in the peripheral region 40B). It is formed so as to spread out in a substantially fan-shape toward.
  • a plurality of lens elements 40Es are formed with a convex curved cross-sectional shape and extend radially from the road surface illumination lens portion 40D diagonally downward to the left.
  • the rear displacement region 40E prevents the emitted light from the road surface illumination lens portion 40D from inadvertently entering, and also makes it difficult to see the rear space of the light-transmitting member 40, thereby improving its appearance. It is designed so that it will not be damaged.
  • FIG. 4 is a view taken in the direction of arrow IV in FIG. 2.
  • the light source 30 and the substrate 32 are shown by two-dot chain lines.
  • a boss portion 40G extending toward the rear of the lamp is formed on the rear surface 40Eb of the rearward displacement region 40E of the light-transmitting member 40.
  • a positioning pin 40F extending toward the rear of the lamp is formed at a position diagonally above and to the right of the optical axis Ax on the total reflection surface 40B2 of the peripheral area 40B (that is, a position facing the boss portion 40G with respect to the optical axis Ax).
  • a pin insertion hole 32a is formed at a position corresponding to the positioning pin 40F, and a boss insertion hole 32b is formed at a position corresponding to the boss portion 40G.
  • the pin insertion hole 32a is formed as a round hole having an inner diameter slightly larger than the outer diameter of the tip of the positioning pin 40F.
  • the boss insertion hole 32b is formed as a long hole that is somewhat larger than the outer diameter of the intermediate portion of the boss portion 40G.
  • the width of the boss insertion hole 32b in the circumferential direction with respect to the optical axis Ax is set to be slightly larger than the outer diameter of the intermediate portion of the boss portion 40G, and the width in the radial direction with respect to the optical axis Ax is set to a value slightly larger than the outer diameter of the intermediate portion of the boss portion 40G. It is set to a value that is somewhat larger than the outer diameter of the intermediate portion of the boss portion 40G.
  • a positioning protrusion 40Fa for abutting against the front surface of the substrate 32 is formed at a position on the total reflection surface 40B2 of the peripheral region 40B on the optical axis Ax side from the positioning pin 40F, and a rear displacement region A pair of positioning protrusions 40Ga for abutting against the front surface of the substrate 32 are formed at positions on both sides of the boss portion 40G in the circumferential direction on the rear surface 40Eb of the rear surface 40E.
  • the board 32 has the positioning pin 40F inserted into the pin insertion hole 32a and the boss part 40G inserted into the boss insertion hole 32b, and the front surface of the board 32 has the positioning protrusion 40Fa and the pair of positioning parts. By abutting against the protrusion 40Ga, positioning with respect to the light-transmitting member 40 is achieved.
  • the light-transmitting member 40 is fixedly supported by the holder 50 by tightening the screw 60 to the boss portion 40G with the annular flange portion 40Cc of the outer peripheral annular region 40C and the rear end surface of the boss portion 40G in contact with the holder 50. has been done.
  • the holder 50 is formed to surround the substrate 32 from the rear side of the lamp, and is configured to abut the annular flange portion 40Cc of the light-transmitting member 40 at its outer peripheral front end surface 50a. Further, the holder 50 is formed with a screw insertion hole 50b through which the screw 60 is inserted. Further, the holder 50 is formed with an outer peripheral flange portion 50c near the outer peripheral front end surface 50a.
  • the light-transmitting cover 14 and the lamp body 12 are both formed into a substantially dome shape, and are arranged to cover the lamp unit 20 from both the front and rear sides of the lamp.
  • the transparent cover 14 and the lamp body 12 are fixed to each other while sandwiching the outer peripheral flange portion 50c of the holder 50 from both the front and rear sides of the lamp.
  • the lamp body 12 is formed with a lamp attachment portion 12a for attaching the vehicle lamp 10 to a vehicle (see FIG. 5).
  • FIG. 5 is a perspective view of the vehicle 2 equipped with the vehicle lamp 10 as seen from the rear side thereof.
  • FIG. 5 in a vehicle (specifically, a two-wheeled vehicle) 2 that is traveling on a straight road (or stopped at a red light, etc.), the vehicle lamp 10 on the left side is lit (more precisely, it is lit intermittently). It shows the state of being.
  • a vehicle specifically, a two-wheeled vehicle 2 that is traveling on a straight road (or stopped at a red light, etc.
  • the vehicle lamp 10 on the left side is lit (more precisely, it is lit intermittently). It shows the state of being.
  • a road surface light distribution pattern P is formed on the road surface near the front of the vehicle by the irradiated light from the road surface illumination lens portion 40D of the light transmitting member 40 of the vehicle lamp 10.
  • This road surface light distribution pattern P is formed as an amber light distribution pattern that extends obliquely toward the left front of the vehicle in a substantially band shape, so even if visibility is poor at the next intersection, pedestrians on the road ahead of the left turn will be unable to see it. Even in a case where the vehicle 2 is not visible, the presence of the vehicle 2 scheduled to turn left is notified by visually recognizing the leading end of the road surface light distribution pattern P.
  • the light transmitting member 40 disposed on the front side of the light source 30 includes a central region 40A located in front of the light source 30 and a peripheral region 40B located around the central region 40A.
  • its central region 40A is configured as a lens portion that deflects and controls the emitted light from the light source 30, and its peripheral region 40B includes an entrance surface 40B1 into which the emitted light from the light source 30 enters;
  • a configuration including a total reflection surface 40B2 that totally reflects the light incident from the entrance surface 40B1 toward the front of the lamp, and an output surface 40B3 that outputs the light totally reflected by the total reflection surface 40B2 toward the front of the lamp.
  • the light emitted from the light source 30 can be efficiently irradiated toward the front of the lamp by the light-transmitting member 40. Thereby, it is possible to notify the surroundings of the driver's 4 intention (that is, the intention of the vehicle to turn left) by turning on the vehicle lamp 10.
  • the light transmitting member 40 has a road illumination lens portion 40D in which a region located diagonally downward in front of the lamp with respect to the light source 30 deflects and controls the emitted light from the light source 30 toward the road surface diagonally downward in front of the lamp. Therefore, the vehicle lamp 10 can have a road illumination function of illuminating the road surface in the vicinity of the vehicle with the light emitted from the road illumination lens part 40D. can be increased.
  • the road surface illumination lens section 40D is configured to deflect and control the light emitted from the light source 30, the light transmission member 40 is partially thickened by providing the road surface illumination function to the light transmission member 40. You can prevent it from turning into meat.
  • the vehicle lamp 10 including the light source 30 and the light-transmitting member 40 can have a road illumination function without making the light-transmitting member 40 thick.
  • the vehicle lamp 10 is a front turn signal lamp, and the road illumination lens portion 40D of the light transmitting member 40 controls the deflection of the light emitted from the light source 30 toward the vehicle turning direction. Since the light is turned on, the intention of the driver 4 (that is, the intention of the vehicle 2 to make a right or left turn, etc.) can be notified to the surroundings more clearly.
  • the road surface illumination lens section 40D is formed at the boundary between the central region 40A and the peripheral region 40B of the light transmitting member 40, it efficiently irradiates the light emitted from the light source 30 toward the road surface in front of the vehicle. be able to.
  • the front surface 40Ea of the rear displacement region 40E which is located diagonally lower in front of the lamp than the road surface illumination lens portion 40D, is Since it is displaced toward the rear of the lamp rather than the front surface of the general area, it is possible to prevent the light emitted from the road surface illumination lens portion 40D from re-entering the light-transmitting member 40. Therefore, it is possible to prevent stray light from being generated due to re-injection into the light-transmitting member 40, thereby preventing the road illumination function of the vehicle lamp 10 from being inadvertently impaired. Can be done.
  • a boss portion 40G extending toward the rear of the lamp is formed on the rear surface 40Eb of the rear displacement region 40E of the peripheral area 40B, so that the light distribution function of the vehicle lamp 10 is improved. It is possible to easily position and support the light-transmitting member 40 with respect to the lamp body 12 while preventing the light-transmitting member 40 from being damaged.
  • this rear displacement region 40E is formed such that its front surface 40Ea extends diagonally downward to the left from the road surface illumination lens section 40D, and a plurality of lens elements 40Es are disposed on this front surface 40Ea. Since it is formed with a convex curved cross-sectional shape and extends radially from the road surface illumination lens portion 40D toward the left diagonally downward direction, the boss portion 40G is formed on the rear surface 40Eb. It is possible to make the presence difficult to visually recognize from the front side of the lamp. Accordingly, the appearance of the light-transmitting member 40 can be prevented from being impaired.
  • the vehicle lamp 10 is a front turn signal lamp disposed at the front left part of the vehicle 2, but it may also be a front turn signal lamp disposed at the front right part of the vehicle 2.
  • the same effects as those of the above embodiment can be obtained.
  • the same effects as in the above embodiment can be obtained.
  • the same effects as in the above embodiment can be obtained.
  • the same effects as in the above embodiment can be obtained.
  • FIG. 6 is a diagram similar to FIG. 1, showing a vehicle lamp 110 according to this modification. Further, FIG. 7 is a plan view showing the vehicle 102 on which the vehicle lamp 110 is mounted.
  • the basic configuration of the vehicle lamp 110 according to this modification is the same as that in the above embodiment, but as shown in FIG. This embodiment differs from the above embodiment in that it is configured as a backup lamp placed at two locations on the left and right sides of the rear portion of the vehicle body.
  • the vehicle lamp 110 has a structure in which the lamp unit 120 is housed in a lamp chamber formed by a lamp body 112 and a transparent cover 114, but the transparent cover 114 is a substantially flat plate. Further, the lamp body 112 does not include the lamp mounting portion 12a like the lamp body 12 of the above embodiment.
  • the lamp unit 120 of this modification also has a structure in which a light source 130 is arranged on the optical axis Ax extending in the longitudinal direction of the lamp, and a transparent member 140 is arranged on the front side of the lamp (that is, on the rear side of the vehicle). There is.
  • the light source 130 of this modification is also composed of a light emitting element, it differs from the above embodiment in that it is composed of a light emitting diode that emits white light.
  • the light transmitting member 140 of this modification also has a configuration including a central region 140A, a peripheral region 140B, an outer circumferential annular region 140C, a road surface illumination lens portion 140D, and a rear displacement region 140E.
  • the arrangement of the lens portion 140D and the rear displacement region 140E is different from that of the above embodiment.
  • the road surface illumination lens portion 140D and the rear displacement region 140E are arranged directly below the optical axis Ax.
  • the road surface illumination lens section 140D is configured to deflect and control the light emitted from the light source 130 toward a road surface located diagonally downward in the front direction of the lamp (that is, a road surface located directly behind the vehicle 102). , the optical axis Ax extends directly below when viewed from the front of the lamp.
  • the configurations of the central region 140A, peripheral region 140B, and outer circumferential annular region 140C are the same as in the above embodiment, and also the road illumination lens portion 140D and the rear displacement region 140E.
  • the configuration itself is also the same as that of the above embodiment.
  • FIG. 7 shows a state in which the vehicle 102 is moving backward in the direction of the arrow shown while turning on the left and right pair of vehicle lamps 110.
  • a pair of left and right road surface light distribution patterns P-1 are formed on the road surface near the rear of the vehicle by the irradiated light from the road surface illumination lens portion 140D of the light member 140.
  • Each road surface light distribution pattern P-1 is formed as a white light distribution pattern that extends in a substantially band-like direction directly behind the vehicle 102, thereby more clearly informing the surroundings that the vehicle 102 is moving backward. Ru.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Provided is a vehicle lamp comprising a light source and a light transmissive member, wherein the light transmissive member is provided with a road surface-irradiating function without increasing the thickness thereof. A light transmissive member 40 is configured such that a center region 40A positioned forwardly of the light source 30 in the lamp is configured as a lens portion for deflection-controlling emitted light from the light source 30, with a peripheral region 40B positioned around the lens portion being configured to have an input surface 40B1, a total reflection surface 40B2, and an output surface 40B3. In this way, the emitted light from the light source 30 can be efficiently irradiated forwardly of the lamp by means of the light transmissive member 40. In addition, a region of the light transmissive member 40 that is positioned forwardly of and diagonally under the light source 30 of the lamp is configured as a road surface irradiation lens portion 40D for deflection-controlling the emitted light from the light source 30 toward the road surface forwardly of and diagonally under the lamp. In this way, the road surface in the vicinity of the vehicle can be irradiated with the emitted light from the road surface irradiation lens portion 40D, without the light transmissive member 40 being made partly thicker.

Description

車両用灯具Vehicle lights
　本願発明は、透光部材を備えた車両用灯具に関するものである。 The present invention relates to a vehicle lamp equipped with a light-transmitting member.
　従来より、車両用灯具の構成として、光源とその灯具前方側に配置された透光部材とを備えたものが知られている。 BACKGROUND ART Conventionally, vehicle lamps have been known to include a light source and a translucent member disposed on the front side of the lamp.
　「特許文献１」には、このような車両用灯具として、その点灯により運転者の意思（具体的には車両の右左折等の動作意思）を周囲に報知するという本来の機能に加えて、車両近傍の路面を照射する機能を備えたフロントターンシグナルランプが記載されている。 ``Patent Document 1'' describes that as such a vehicle lamp, in addition to its original function of notifying the surroundings of the driver's intention (specifically, the intention of the vehicle to turn left or right, etc.) by lighting it, A front turn signal lamp is described that has the function of illuminating the road surface near the vehicle.
　この「特許文献１」に記載された車両用灯具の透光部材は、光源の灯具前方に位置する中心領域とその周囲に位置する周辺領域とを備えており、かつ、その中心領域は光源からの出射光を偏向制御するレンズ部として構成されており、その周辺領域は、光源からの出射光を入射させる入射面と、この入射面から入射した光を灯具前方へ向けて全反射させる全反射面と、この全反射面で全反射した光を灯具前方へ向けて出射させる出射面とを備えた構成となっている。 The translucent member of the vehicle lamp described in this "Patent Document 1" includes a central region located in front of the lamp of the light source and a peripheral region located around the central region, and the central region is away from the light source. The lens is configured as a lens section that deflects and controls the emitted light from the light source, and its surrounding area consists of an incident surface that allows the emitted light from the light source to enter, and a total reflection surface that totally reflects the light incident from this incident surface toward the front of the lamp. It has a configuration including a surface and an output surface that emits the light totally reflected by the total reflection surface toward the front of the lamp.
　そして、この「特許文献１」に記載された透光部材においては、周辺領域の全反射面で全反射した光の一部を、その前面でさらに下向きに全反射させた後に、周辺領域から出射させることにより、車両近傍の路面を照射するように構成されている。 In the light-transmitting member described in Patent Document 1, a part of the light totally reflected by the total reflection surface in the peripheral area is further totally reflected downward at the front surface, and then emitted from the peripheral area. By doing so, the road surface near the vehicle is illuminated.
特開２０２１－３４３０９号公報JP 2021-34309 Publication
　上記「特許文献１」に記載された車両用灯具のように、フロントターンシグナルランプとしての灯具本来の機能に加えて路面照射機能を持たせることにより、周囲への報知機能を高めることが可能となる。 Like the vehicle lamp described in the above-mentioned "Patent Document 1", by providing the lamp with a road illumination function in addition to its original function as a front turn signal lamp, it is possible to enhance the notification function to the surroundings. Become.
　しかしながら、上記「特許文献１」に記載された車両用灯具においては、路面照射を行うために、透光部材の周辺領域における前後両面で２回全反射させた後に出射させる構成となっているので、透光部材が部分的に厚肉になってしまう。 However, in the vehicle lamp described in the above-mentioned "Patent Document 1", in order to illuminate the road surface, the light is totally reflected twice on both the front and rear surfaces in the peripheral area of the transparent member, and then is emitted. , the transparent member becomes partially thick.
　本願発明は、このような事情に鑑みてなされたものであって、光源と透光部材とを備えた車両用灯具において、透光部材を厚肉にすることなく路面照射機能を持たせることができる車両用灯具を提供することを目的とするものである。 The present invention has been made in view of the above circumstances, and it is possible to provide a road illumination function in a vehicle lamp equipped with a light source and a transparent member without making the transparent member thick. The purpose of the present invention is to provide a vehicle lamp that can be used in a vehicle.
　本願発明は、透光部材の構成に工夫を施すことにより、上記目的達成を図るようにしたものである。 The present invention aims to achieve the above object by devising the structure of the light-transmitting member.
　すなわち、本願発明に係る車両用灯具は、
　光源と、上記光源の灯具前方側に配置された透光部材と、を備えた車両用灯具において、
　上記透光部材は、上記光源の灯具前方に位置する中心領域と、上記中心領域の周囲に位置する周辺領域とを備えており、
　上記中心領域は、上記光源からの出射光を偏向制御するレンズ部として構成されており、
　上記周辺領域は、上記光源からの出射光を入射させる入射面と、上記入射面から入射した光を灯具前方へ向けて全反射させる全反射面と、上記全反射面で全反射した光を灯具前方へ向けて出射させる出射面とを備えており、
　上記透光部材は、上記光源に対して灯具前方斜め下方に位置する領域が上記光源からの出射光を灯具前方斜め下方へ向けて偏向制御する路面照射用レンズ部として構成されている、ことを特徴とするものである。 That is, the vehicle lamp according to the present invention is
A vehicle lamp comprising a light source and a transparent member disposed on the front side of the lamp of the light source,
The light-transmitting member includes a center region located in front of the lamp of the light source, and a peripheral region located around the center region,
The central region is configured as a lens portion that deflects and controls the light emitted from the light source,
The peripheral area includes an entrance surface that receives the light emitted from the light source, a total reflection surface that totally reflects the light that has entered from the entrance surface toward the front of the lamp, and a total reflection surface that reflects the light that has been totally reflected by the total reflection surface toward the front of the lamp. It is equipped with an emission surface that emits light toward the front,
The light transmitting member is configured such that a region located diagonally downward in front of the lamp with respect to the light source is configured as a road illumination lens portion that deflects and controls the emitted light from the light source to diagonally downwardly in front of the lamp. This is a characteristic feature.
　上記「車両用灯具」の種類は特に限定されるものではなく、例えばフロントターンシグナルランプやバックアップランプ等が採用可能である。 The type of the above-mentioned "vehicle lamp" is not particularly limited, and for example, a front turn signal lamp, a backup lamp, etc. can be adopted.
　上記「車両用灯具」が装着される車両の種類は特に限定されるものではなく、例えば二輪車や四輪車等が採用可能である。 The type of vehicle to which the above-mentioned "vehicle lamp" is installed is not particularly limited, and for example, a two-wheeled vehicle, a four-wheeled vehicle, etc. can be adopted.
　上記「光源」の種類は特に限定されるものではなく、例えば発光ダイオードや白熱バルブあるいはレーザーダイオード等が採用可能である。 The type of the above-mentioned "light source" is not particularly limited, and for example, a light emitting diode, an incandescent bulb, a laser diode, etc. can be adopted.
　上記「路面照射用レンズ部」は、光源に対して灯具前方斜め下方に位置する領域に配置されていれば、その具体的な位置は特に限定されるものではなく、例えば、灯具正面視において光源の真下に配置されていてもよいし光源の真下から左右方向にずれた位置に配置されていてもよい。 The above-mentioned "road surface illumination lens section" is not particularly limited in its specific position as long as it is disposed in an area diagonally downward in front of the lamp with respect to the light source. For example, when viewed from the front of the lamp, The light source may be placed directly below the light source, or may be placed at a position shifted from right below the light source in the left-right direction.
　上記「路面照射用レンズ部」は、光源からの出射光を灯具前方斜め下方へ向けて偏向制御するように構成されていれば、その具体的な構成については特に限定されるものではない。 The specific configuration of the above-mentioned "road illumination lens section" is not particularly limited as long as it is configured to deflect and control the light emitted from the light source diagonally downward in front of the lamp.
　本願発明に係る車両用灯具は、光源の灯具前方側に配置された透光部材の構成として、光源の灯具前方に位置する中心領域とその周囲に位置する周辺領域とを備えており、かつ、その中心領域は光源からの出射光を偏向制御するレンズ部として構成されており、その周辺領域は、光源からの出射光を入射させる入射面と、この入射面から入射した光を灯具前方へ向けて全反射させる全反射面と、この全反射面で全反射した光を灯具前方へ向けて出射させる出射面とを備えた構成となっているので、光源からの出射光を透光部材により灯具前方へ向けて効率良く照射することができる。そしてこれにより、車両用灯具の点灯による運転者の意思（例えば車両の右左折等の動作意思）を周囲に報知することができる。 The vehicular lamp according to the present invention includes a light transmitting member disposed on the front side of the light source including a central region located in front of the light source and a peripheral region located around the center region, and The central area is configured as a lens part that deflects and controls the light emitted from the light source, and the surrounding area is an entrance surface that receives the light emitted from the light source and directs the light that enters from this entrance surface toward the front of the lamp. The structure includes a total reflection surface that completely reflects the light from the total reflection surface, and an output surface that emits the light totally reflected by the total reflection surface toward the front of the lamp. It can efficiently illuminate the front. Thereby, it is possible to notify the surroundings of the driver's intention (for example, the intention of the vehicle to turn left or right, etc.) by turning on the vehicle lamp.
　その上で、透光部材は、光源に対して灯具前方斜め下方に位置する領域が、光源からの出射光を灯具前方斜め下方の路面へ向けて偏向制御する路面照射用レンズ部として構成されているので、この路面照射用レンズ部からの出射光によって車両近傍の路面を照射するという路面照射機能を車両用灯具に持たせることができ、これにより周囲への報知機能を高めることができる。 In addition, in the light-transmitting member, a region located diagonally downward in front of the lamp with respect to the light source is configured as a road surface illumination lens portion that deflects and controls the emitted light from the light source toward the road surface diagonally downward in front of the lamp. Therefore, the vehicular lamp can have a road surface illumination function of illuminating the road surface near the vehicle with the light emitted from the road surface illumination lens section, thereby enhancing the notification function to the surroundings.
　その際、路面照射用レンズ部は光源からの出射光を偏向制御する構成となっているので、透光部材に路面照射機能が付与されたことによって上記従来の車両用灯具のように透光部材が部分的に厚肉になってしまわないようにすることができる。 At that time, the road illumination lens part is configured to deflect and control the light emitted from the light source, so by adding the road illumination function to the light-transmitting member, the light-transmitting member can be used like the conventional vehicle lamp described above. This can prevent the wall from becoming partially thick.
　このように本願発明によれば、光源と透光部材とを備えた車両用灯具において、透光部材を厚肉にすることなく路面照射機能を持たせることができる。 As described above, according to the present invention, a vehicle lamp equipped with a light source and a light-transmitting member can have a road illumination function without making the light-transmitting member thick.
　上記構成において、さらに、路面照射用レンズ部として、光源からの出射光を車両旋回方向へ向けて偏向制御するように構成されたものとすれば、車両用灯具がフロントターンシグナルランプ等である場合において、その点灯によって運転者の意思（すなわち車両の右左折等の動作意思）をより分かりやすく周囲に報知することができる。 In the above configuration, if the road surface illumination lens section is further configured to deflect and control the emitted light from the light source toward the vehicle turning direction, when the vehicle lamp is a front turn signal lamp, etc. By turning on the light, the driver's intention (that is, the intention of the vehicle to turn right or left, etc.) can be notified to the surroundings more clearly.
　上記構成において、さらに、路面照射用レンズ部が中心領域と周辺領域との境界位置に形成された構成とすれば、光源からの出射光を車両前方路面へ向けて効率良く照射することができる。 In the above configuration, if the road surface illumination lens portion is further formed at the boundary position between the central region and the peripheral region, the emitted light from the light source can be efficiently irradiated toward the road surface in front of the vehicle.
　上記構成において、さらに、透光部材として、周辺領域における路面照射用レンズ部よりも灯具前方斜め下方に位置する領域の前面が、周辺領域における一般領域の前面よりも灯具後方側に変位している構成とすれば、路面照射用レンズ部からの出射光が透光部材に再入射しまうのを未然に防止することができる。したがって、透光部材への再入射によって迷光が発生してしまうのを未然に防止することができ、これにより車両用灯具の路面照射機能が不用意に損なわれてしまわないようにすることができる。 In the above configuration, the light-transmitting member further includes a front surface of an area located diagonally below the front of the lamp than the road illumination lens part in the peripheral area, which is displaced toward the rear of the lamp than the front of the general area in the peripheral area. With this configuration, it is possible to prevent the emitted light from the road illumination lens portion from re-entering the light-transmitting member. Therefore, it is possible to prevent stray light from being generated due to re-incidence into the light-transmitting member, thereby preventing the road illumination function of the vehicle lamp from being inadvertently impaired. .
　上記構成において、さらに、透光部材として、周辺領域における路面照射用レンズ部よりも灯具前方斜め下方に位置する領域の後面に、灯具後方へ向けて延びるボス部が形成された構成とすれば、車両用灯具の配光機能が損なわれないようにした上で、透光部材のランプボディ等に対する位置決め支持が容易に行われるようにすることができる。 In the above configuration, if the light-transmitting member is further formed with a boss portion extending toward the rear of the lamp on the rear surface of an area located diagonally below the front of the lamp than the road illumination lens portion in the peripheral area, While the light distribution function of the vehicle lamp is not impaired, the light-transmitting member can be easily positioned and supported with respect to the lamp body or the like.
本願発明の一実施形態に係る車両用灯具を示す正面図A front view showing a vehicle lamp according to an embodiment of the present invention 図１のII－II線断面図II-II cross-sectional view in Figure 1 図１のIII－III線断面図Cross-sectional view along line III-III in Figure 1 図２のIV方向矢視図IV direction arrow view in Figure 2 上記車両用灯具が搭載された車両を、その後方側から見た状態で透視的に示す図A perspective view of a vehicle equipped with the above-mentioned vehicle lamp, as seen from the rear side. 上記実施形態の変形例を示す、図１と同様の図A diagram similar to FIG. 1 showing a modification of the above embodiment. 上記変形例に係る車両用灯具が搭載された車両を示す平面図A plan view showing a vehicle equipped with a vehicle lamp according to the above modification.
　以下、図面を用いて、本願発明の実施の形態について説明する。 Hereinafter, embodiments of the present invention will be described using the drawings.
　図１は、本願発明の一実施形態に係る車両用灯具１０を示す正面図である。また、図２は図１のII－II線断面図であり、図３は図１のIII－III線断面図である。 FIG. 1 is a front view showing a vehicle lamp 10 according to an embodiment of the present invention. 2 is a sectional view taken along the line II--II in FIG. 1, and FIG. 3 is a sectional view taken along the line III--III in FIG.
　図１～３において、Ｘで示す方向が車両用灯具１０としての「前方」（車両としても「前方」）であり、Ｙで示す方向が車両用灯具１０としての「左方向」（車両としても「左方向」）であり、Ｚで示す方向が「上方向」である。図４においても同様である。 In FIGS. 1 to 3, the direction indicated by ("left direction"), and the direction indicated by Z is "upward direction". The same applies to FIG.
　図１～３に示すように、本実施形態に係る車両用灯具１０は、車両（具体的には二輪車（図５参照））の左前部に配置されるフロントターンシグナルランプであって、ランプボディ１２と、このランプボディ１２の前端開口部に取り付けられた素通し状の透光カバー１４とで形成される灯室内に、灯具前後方向に延びる光軸Ａｘを有する灯具ユニット２０が収容された構成となっている。 As shown in FIGS. 1 to 3, the vehicle lamp 10 according to the present embodiment is a front turn signal lamp disposed at the front left part of a vehicle (specifically, a two-wheeled vehicle (see FIG. 5)), and has a lamp body. 12 and a transparent transparent cover 14 attached to the front end opening of the lamp body 12, a lamp unit 20 having an optical axis Ax extending in the front-rear direction of the lamp body is housed. It has become.
　灯具ユニット２０は、光軸Ａｘ上に配置された光源３０と、この光源３０の灯具前方側に配置された透光部材４０と、これらの灯具後方側に配置されたホルダー５０とを備えた構成となっている。 The lamp unit 20 includes a light source 30 placed on the optical axis Ax, a transparent member 40 placed on the front side of the lamp of this light source 30, and a holder 50 placed on the rear side of these lamps. It becomes.
　光源３０は、発光素子（具体的にはアンバー色に発光する発光ダイオード）で構成されており、その発光面３０ａを灯具正面方向へ向けた状態で基板３２に搭載されている。基板３２は、光軸Ａｘと直交する鉛直面に沿って延びるように配置された状態で透光部材４０に支持されている。 The light source 30 is composed of a light emitting element (specifically, a light emitting diode that emits light in an amber color), and is mounted on the substrate 32 with its light emitting surface 30a facing toward the front of the lamp. The substrate 32 is supported by the light-transmitting member 40 so as to extend along a vertical plane perpendicular to the optical axis Ax.
　透光部材４０は、無色透明の樹脂製部材（例えばアクリル（ＰＭＭＡ）樹脂やポリカーボネート（ＰＣ）樹脂等の射出成形品）であって、灯具正面視において光軸Ａｘを中心とする円形の外形形状を有している。この透光部材４０はホルダー５０に支持されており、このホルダー５０はランプボディ１２に支持されている。 The light-transmitting member 40 is a colorless and transparent resin member (for example, an injection molded product of acrylic (PMMA) resin, polycarbonate (PC) resin, etc.), and has a circular outer shape centered on the optical axis Ax when viewed from the front of the lamp. have. This light-transmitting member 40 is supported by a holder 50, and this holder 50 is supported by the lamp body 12.
　透光部材４０は、光軸Ａｘを中心とする中心領域４０Ａと、この中心領域４０Ａの周囲に位置する周辺領域４０Ｂと、この周辺領域４０Ｂの周囲に位置する外周環状領域４０Ｃと、光軸Ａｘの左斜め下方（灯具正面視では右斜め下方）に位置する路面照射用レンズ部４０Ｄと、この路面照射用レンズ部４０Ｄの左斜め下方に位置する後方変位領域４０Ｅとを備えている。 The light-transmitting member 40 includes a central region 40A centered on the optical axis Ax, a peripheral region 40B located around the central region 40A, an outer annular region 40C located around the peripheral region 40B, and a central region 40A centered on the optical axis Ax. It includes a road surface illumination lens section 40D located diagonally lower left (diagonally lower right when viewed from the front of the lamp) and a rear displacement region 40E located diagonally lower left of the road surface illumination lens section 40D.
　中心領域４０Ａ、周辺領域４０Ｂおよび外周環状領域４０Ｃは、灯具正面視において光軸Ａｘを中心とする同心円状の外形形状を有しているが、路面照射用レンズ部４０および後方変位領域４０Ｅが位置する部分は欠けた状態で形成されている。 The central region 40A, the peripheral region 40B, and the outer circumferential annular region 40C have concentric external shapes centered on the optical axis Ax when viewed from the front of the lamp, but the road illumination lens section 40 and the rear displacement region 40E are located The part that is formed is missing.
　図１、２に示すように、中心領域４０Ａは、光源３０からの出射光を偏向制御するレンズ部として構成されている。具体的には、この中心領域４０Ａは、前面４０Ａａが光軸Ａｘを中心とする凸曲面状に形成されており、後面４０Ａｂが光軸Ａｘと直交する鉛直面に沿って延びる平面状に形成されている。その際、この中心領域４０Ａの前面４０Ａａは横長楕円面状の表面形状を有しており、これにより光源３０からの出射光を上下方向よりも左右方向に大きく拡がる光として灯具前方へ向けて出射させるようになっている。 As shown in FIGS. 1 and 2, the central region 40A is configured as a lens portion that deflects and controls the light emitted from the light source 30. Specifically, in this central region 40A, a front surface 40Aa is formed in a convex curved shape centered on the optical axis Ax, and a rear surface 40Ab is formed in a planar shape extending along a vertical plane orthogonal to the optical axis Ax. ing. At this time, the front surface 40Aa of the central region 40A has a horizontally oblong ellipsoidal surface shape, which allows the light emitted from the light source 30 to be emitted toward the front of the lamp as light that spreads more horizontally than vertically. It is designed to let you do so.
　周辺領域４０Ｂは、光源３０からの出射光を入射させる入射面４０Ｂ１と、この入射面４０Ｂ１から入射した光を灯具前方へ向けて全反射させる全反射面４０Ｂ２と、この全反射面４０Ｂ２で全反射した光を灯具前方へ向けて出射させる出射面４０Ｂ３とを備えている。 The peripheral area 40B includes an entrance surface 40B1 through which the light emitted from the light source 30 enters, a total reflection surface 40B2 through which the light incident from the entrance surface 40B1 is totally reflected toward the front of the lamp, and a total reflection surface 40B2 on which the light is totally reflected. and an output surface 40B3 that outputs the light toward the front of the lamp.
　入射面４０Ｂ１は、中心領域４０Ａの後面４０Ａｂの外周縁から灯具後方側へ向けて突出する環状面で構成されている。この入射面４０Ｂ１は、凸曲線状の断面形状で円環状に形成されており、これにより光軸Ａｘを含む平面内において光源３０からの出射光を略平行光として入射させるようになっている。 The entrance surface 40B1 is constituted by an annular surface that protrudes toward the rear side of the lamp from the outer peripheral edge of the rear surface 40Ab of the central region 40A. The entrance surface 40B1 is formed in an annular shape with a convex curved cross-section, so that the light emitted from the light source 30 enters as substantially parallel light within a plane including the optical axis Ax.
　全反射面４０Ｂ２は、光軸Ａｘを中心にして灯具前方側へ拡がる円錐面状に形成されており、これにより光軸Ａｘを含む平面内において入射面４０Ｂ１からの反射光を略平行光のまま灯具正面方向へ反射させるようになっている。 The total reflection surface 40B2 is formed in a conical shape that spreads toward the front of the lamp with the optical axis Ax as the center, so that the reflected light from the incident surface 40B1 remains approximately parallel in a plane that includes the optical axis Ax. The light is reflected in the direction in front of the light fixture.
　出射面４０Ｂ３は、光軸Ａｘを中心にして同心円状に区分けされた上でさらに放射状に区分けされた複数のセグメントに、凸球面状の複数のレンズ素子４０Ｂ３ｓが割り付けられた構成となっている。その際、出射面４０Ｂ３は、外周側に位置するセグメントが灯具前方側に変位するようにして３重に区分けされている。そして、出射面４０Ｂ３は、各レンズ素子４０Ｂ３ｓにおいて、入射面４０Ｂ１から略平行光として到達した反射光を径方向および周方向に拡散する光として灯具前方へ出射させるように構成されている。 The exit surface 40B3 has a configuration in which a plurality of convex spherical lens elements 40B3s are allocated to a plurality of segments that are segmented concentrically around the optical axis Ax and further segmented radially. At this time, the emission surface 40B3 is divided into three sections such that the segment located on the outer circumferential side is displaced toward the front side of the lamp. The output surface 40B3 is configured to output the reflected light that has arrived from the input surface 40B1 as substantially parallel light to the front of the lamp as light that is diffused in the radial direction and the circumferential direction in each lens element 40B3s.
　外周環状領域４０Ｃは、光軸Ａｘと直交する鉛直面に沿って略平板状に延びるように形成されている。この外周環状領域４０Ｃは装飾用の領域であって、光源３０からの出射光に対する制御機能は有していない。 The outer peripheral annular region 40C is formed to extend in a substantially flat plate shape along a vertical plane perpendicular to the optical axis Ax. This outer circumferential annular region 40C is a decorative region and does not have a control function for the light emitted from the light source 30.
　外周環状領域４０Ｃの後面４０Ｃｂは、平面状に形成されており、その外周縁部には灯具後方へ向けて突出する環状フランジ部４０Ｃｃが構成されている。 The rear surface 40Cb of the outer circumferential annular region 40C is formed in a planar shape, and an annular flange portion 40Cc that protrudes toward the rear of the lamp is formed on its outer circumferential edge.
　外周環状領域４０Ｃの前面４０Ｃａは、光軸Ａｘを中心にして同心円状および放射状に区分けされた複数のセグメントに、凸球面状の複数のレンズ素子４０Ｃｓが割り付けられた構成となっている。各レンズ素子４０Ｃｓは、周辺領域４０Ｂの出射面４０Ｂ３を構成している各レンズ素子４０Ｂ３ｓよりも小さいサイズを有している。 The front surface 40Ca of the outer circumferential annular region 40C has a configuration in which a plurality of convex spherical lens elements 40Cs are allocated to a plurality of segments concentrically and radially divided around the optical axis Ax. Each lens element 40Cs has a smaller size than each lens element 40B3s forming the exit surface 40B3 of the peripheral region 40B.
　図１、３に示すように、路面照射用レンズ部４０Ｄは、光源３０からの出射光を灯具前方斜め下方の路面へ向けて偏向制御するように構成されている。 As shown in FIGS. 1 and 3, the road illumination lens section 40D is configured to deflect and control the light emitted from the light source 30 toward the road surface diagonally downward in front of the lamp.
　具体的には、路面照射用レンズ部４０Ｄは、光源３０の発光中心を通るようにして灯具正面方向に対して左斜め下方に延びる光軸Ａｘ１を有する集光レンズとして構成されており、これにより灯具正面方向に対して左斜め下方に位置する路面を照射するように構成されている。すなわち、路面照射用レンズ部４０Ｄは、車両左折時に光源３０からの出射光を車両旋回方向へ向けて偏向制御するように構成されている。 Specifically, the road surface illumination lens section 40D is configured as a condensing lens having an optical axis Ax1 extending diagonally downward to the left with respect to the front direction of the lamp so as to pass through the light emission center of the light source 30. It is configured to illuminate the road surface located diagonally downward to the left with respect to the front direction of the lamp. That is, the road surface illumination lens section 40D is configured to deflect and control the emitted light from the light source 30 toward the vehicle turning direction when the vehicle turns left.
　路面照射用レンズ部４０Ｄは、中心領域４０Ａと周辺領域４０Ｂとの境界位置に形成されている。この路面照射用レンズ部４０Ｄは、前面４０Ｄａが球面で後面４０Ｄｂが平面の平凸レンズで構成されており、その光軸Ａｘ１は光軸Ａｘに対して３０～５０°程度（例えば４０°程度）の挟角をなすようにして延びている。 The road surface illumination lens section 40D is formed at the boundary between the central region 40A and the peripheral region 40B. This road illumination lens section 40D is composed of a plano-convex lens having a spherical front surface 40Da and a flat rear surface 40Db, and its optical axis Ax1 is at an angle of about 30 to 50 degrees (for example, about 40 degrees) with respect to the optical axis Ax. It extends to form an included angle.
　後方変位領域４０Ｅは装飾用の領域であって、光源３０からの出射光に対する制御機能は有していない。この後方変位領域４０Ｅは、その前面４０Ｅａが周辺領域４０Ｂの出射面４０Ｂ３（すなわち周辺領域４０Ｂにおける一般領域の前面）よりも灯具後方側に変位した状態で、路面照射用レンズ部４０Ｄから左斜め下方へ向けて略扇状に拡がるように形成されている。この前面４０Ｅａには、複数のレンズ素子４０Ｅｓが凸曲線状の断面形状で路面照射用レンズ部４０Ｄから左斜め下方へ向けて放射状に延びるようにして形成されている。そしてこれにより後方変位領域４０Ｅは、路面照射用レンズ部４０Ｄからの出射光が不用意に入射してしまわないようにした上で、透光部材４０の後方空間を見えにくくし、その見映えが損なわれてしまわないようになっている。 The rear displacement region 40E is a decorative region and does not have a control function for the light emitted from the light source 30. This rear displacement region 40E is located diagonally downward to the left from the road illumination lens portion 40D, with its front surface 40Ea being displaced toward the rear of the lamp relative to the exit surface 40B3 of the peripheral region 40B (that is, the front surface of the general region in the peripheral region 40B). It is formed so as to spread out in a substantially fan-shape toward. On this front surface 40Ea, a plurality of lens elements 40Es are formed with a convex curved cross-sectional shape and extend radially from the road surface illumination lens portion 40D diagonally downward to the left. As a result, the rear displacement region 40E prevents the emitted light from the road surface illumination lens portion 40D from inadvertently entering, and also makes it difficult to see the rear space of the light-transmitting member 40, thereby improving its appearance. It is designed so that it will not be damaged.
　図４は、図２のIV方向矢視図である。なお、図４においては光源３０および基板３２を２点鎖線で示している。 FIG. 4 is a view taken in the direction of arrow IV in FIG. 2. In addition, in FIG. 4, the light source 30 and the substrate 32 are shown by two-dot chain lines.
　図３、４に示すように、透光部材４０における後方変位領域４０Ｅの後面４０Ｅｂには、灯具後方へ向けて延びるボス部４０Ｇが形成されている。 As shown in FIGS. 3 and 4, a boss portion 40G extending toward the rear of the lamp is formed on the rear surface 40Eb of the rearward displacement region 40E of the light-transmitting member 40.
　また、周辺領域４０Ｂの全反射面４０Ｂ２における光軸Ａｘの右斜め上方の位置（すなわち光軸Ａｘに関してボス部４０Ｇと対向する位置）には、灯具後方へ向けて延びる位置決めピン４０Ｆが形成されている。 Further, a positioning pin 40F extending toward the rear of the lamp is formed at a position diagonally above and to the right of the optical axis Ax on the total reflection surface 40B2 of the peripheral area 40B (that is, a position facing the boss portion 40G with respect to the optical axis Ax). There is.
　一方、基板３２には、位置決めピン４０Ｆに対応する位置にピン挿通孔３２ａが形成されるとともに、ボス部４０Ｇに対応する位置にボス挿通孔３２ｂが形成されている。 On the other hand, in the substrate 32, a pin insertion hole 32a is formed at a position corresponding to the positioning pin 40F, and a boss insertion hole 32b is formed at a position corresponding to the boss portion 40G.
　ピン挿通孔３２ａは、位置決めピン４０Ｆの先端部の外径よりも僅かに大きい内径を有する丸孔として形成されている。また、ボス挿通孔３２ｂは、ボス部４０Ｇの中間部の外径よりも多少大きい長孔として形成されている。具体的には、ボス挿通孔３２ｂは、光軸Ａｘに関して周方向の幅がボス部４０Ｇの中間部の外径よりも僅かに大きい値に設定されており、光軸Ａｘに関して径方向の幅がボス部４０Ｇの中間部の外径よりもある程度大きい値に設定されている。 The pin insertion hole 32a is formed as a round hole having an inner diameter slightly larger than the outer diameter of the tip of the positioning pin 40F. Further, the boss insertion hole 32b is formed as a long hole that is somewhat larger than the outer diameter of the intermediate portion of the boss portion 40G. Specifically, the width of the boss insertion hole 32b in the circumferential direction with respect to the optical axis Ax is set to be slightly larger than the outer diameter of the intermediate portion of the boss portion 40G, and the width in the radial direction with respect to the optical axis Ax is set to a value slightly larger than the outer diameter of the intermediate portion of the boss portion 40G. It is set to a value that is somewhat larger than the outer diameter of the intermediate portion of the boss portion 40G.
　さらに、周辺領域４０Ｂの全反射面４０Ｂ２における位置決めピン４０Ｆよりも光軸Ａｘ側の位置には、基板３２の前面に当接するための位置決め用突起部４０Ｆａが形成されており、また、後方変位領域４０Ｅの後面４０Ｅｂにおけるボス部４０Ｇの周方向両側の位置には、基板３２の前面に当接するための１対の位置決め用突起部４０Ｇａが形成されている。 Further, a positioning protrusion 40Fa for abutting against the front surface of the substrate 32 is formed at a position on the total reflection surface 40B2 of the peripheral region 40B on the optical axis Ax side from the positioning pin 40F, and a rear displacement region A pair of positioning protrusions 40Ga for abutting against the front surface of the substrate 32 are formed at positions on both sides of the boss portion 40G in the circumferential direction on the rear surface 40Eb of the rear surface 40E.
　そして基板３２は、そのピン挿通孔３２ａに位置決めピン４０Ｆが挿入されるとともに、そのボス挿通孔３２ｂにボス部４０Ｇが挿入された状態で、その前面が位置決め用突起部４０Ｆａおよび１対の位置決め用突起部４０Ｇａに当接することにより、透光部材４０に対する位置決めがなされるようになっている。 The board 32 has the positioning pin 40F inserted into the pin insertion hole 32a and the boss part 40G inserted into the boss insertion hole 32b, and the front surface of the board 32 has the positioning protrusion 40Fa and the pair of positioning parts. By abutting against the protrusion 40Ga, positioning with respect to the light-transmitting member 40 is achieved.
　透光部材４０は、外周環状領域４０Ｃの環状フランジ部４０Ｃｃおよびボス部４０Ｇの後端面をホルダー５０に当接させた状態で、ボス部４０Ｇにネジ６０が締め付けられることにより、ホルダー５０に固定支持されている。 The light-transmitting member 40 is fixedly supported by the holder 50 by tightening the screw 60 to the boss portion 40G with the annular flange portion 40Cc of the outer peripheral annular region 40C and the rear end surface of the boss portion 40G in contact with the holder 50. has been done.
　ホルダー５０は、基板３２を灯具後方側から囲むように形成されており、その外周前端面５０ａにおいて透光部材４０の環状フランジ部４０Ｃｃに当接するように構成されている。また、ホルダー５０には、ネジ６０を挿通させるためのネジ挿通孔５０ｂが形成されている。さらに、ホルダー５０には、その外周前端面５０ａの近傍に外周フランジ部５０ｃが形成されている。 The holder 50 is formed to surround the substrate 32 from the rear side of the lamp, and is configured to abut the annular flange portion 40Cc of the light-transmitting member 40 at its outer peripheral front end surface 50a. Further, the holder 50 is formed with a screw insertion hole 50b through which the screw 60 is inserted. Further, the holder 50 is formed with an outer peripheral flange portion 50c near the outer peripheral front end surface 50a.
　図１～３に示すように、透光カバー１４およびランプボディ１２は、いずれも略ドーム状に形成されており、灯具ユニット２０を灯具前後両側から覆うように配置されている。そして、これら透光カバー１４およびランプボディ１２は、ホルダー５０の外周フランジ部５０ｃを灯具前後両側から挟持した状態で互いに固定されている。 As shown in FIGS. 1 to 3, the light-transmitting cover 14 and the lamp body 12 are both formed into a substantially dome shape, and are arranged to cover the lamp unit 20 from both the front and rear sides of the lamp. The transparent cover 14 and the lamp body 12 are fixed to each other while sandwiching the outer peripheral flange portion 50c of the holder 50 from both the front and rear sides of the lamp.
　なお、図１に示すように、ランプボディ１２には、車両用灯具１０を車両（図５参照）に取り付けるための灯具取付部１２ａが形成されている。 Note that, as shown in FIG. 1, the lamp body 12 is formed with a lamp attachment portion 12a for attaching the vehicle lamp 10 to a vehicle (see FIG. 5).
　図５は、車両用灯具１０を備えた車両２を、その後方側から見た状態で透視的に示す図である。 FIG. 5 is a perspective view of the vehicle 2 equipped with the vehicle lamp 10 as seen from the rear side thereof.
　図５においては、直線道路を走行中（または赤信号等で停止中）の車両（具体的には二輪車）２において、左側の車両用灯具１０が点灯（正確には間欠的に点灯）している状態を示している。 In FIG. 5, in a vehicle (specifically, a two-wheeled vehicle) 2 that is traveling on a straight road (or stopped at a red light, etc.), the vehicle lamp 10 on the left side is lit (more precisely, it is lit intermittently). It shows the state of being.
　図５に示すように、車両用灯具１０の点灯によって車両前方へ向けて光照射が行われるので、これにより車両２が次の交差点で左折予定であるという運転者４の動作意思が周囲に報知されることとなる。 As shown in FIG. 5, when the vehicle lamp 10 is turned on, light is emitted toward the front of the vehicle, so that the driver 4's intention to make a left turn at the next intersection is notified to the surroundings. It will be done.
　その際、車両用灯具１０の透光部材４０における路面照射用レンズ部４０Ｄからの照射光によって、車両前方近傍の路面に路面配光パターンＰが形成される。この路面配光パターンＰは車両左斜め前方へ向けて略帯状に延びるアンバー色の配光パターンとして形成されるので、次の交差点が仮に見通しが悪く、左折先の道路にいる歩行者等からは車両２が視認できないような場合であっても、路面配光パターンＰの先端部が視認されることによって、左折予定の車両２の存在が報知されることとなる。 At that time, a road surface light distribution pattern P is formed on the road surface near the front of the vehicle by the irradiated light from the road surface illumination lens portion 40D of the light transmitting member 40 of the vehicle lamp 10. This road surface light distribution pattern P is formed as an amber light distribution pattern that extends obliquely toward the left front of the vehicle in a substantially band shape, so even if visibility is poor at the next intersection, pedestrians on the road ahead of the left turn will be unable to see it. Even in a case where the vehicle 2 is not visible, the presence of the vehicle 2 scheduled to turn left is notified by visually recognizing the leading end of the road surface light distribution pattern P.
　次に、本実施形態の作用効果について説明する。 Next, the effects of this embodiment will be explained.
　本実施形態に係る車両用灯具１０は、光源３０の灯具前方側に配置された透光部材４０の構成として、光源３０の灯具前方に位置する中心領域４０Ａとその周囲に位置する周辺領域４０Ｂとを備えており、かつ、その中心領域４０Ａは光源３０からの出射光を偏向制御するレンズ部として構成されており、その周辺領域４０Ｂは、光源３０からの出射光を入射させる入射面４０Ｂ１と、この入射面４０Ｂ１から入射した光を灯具前方へ向けて全反射させる全反射面４０Ｂ２と、この全反射面４０Ｂ２で全反射した光を灯具前方へ向けて出射させる出射面４０Ｂ３とを備えた構成となっているので、光源３０からの出射光を透光部材４０により灯具前方へ向けて効率良く照射することができる。そしてこれにより、車両用灯具１０の点灯による運転者４の意思（すなわち車両左折の動作意思）を周囲に報知することができる。 In the vehicle lamp 10 according to the present embodiment, the light transmitting member 40 disposed on the front side of the light source 30 includes a central region 40A located in front of the light source 30 and a peripheral region 40B located around the central region 40A. , and its central region 40A is configured as a lens portion that deflects and controls the emitted light from the light source 30, and its peripheral region 40B includes an entrance surface 40B1 into which the emitted light from the light source 30 enters; A configuration including a total reflection surface 40B2 that totally reflects the light incident from the entrance surface 40B1 toward the front of the lamp, and an output surface 40B3 that outputs the light totally reflected by the total reflection surface 40B2 toward the front of the lamp. Therefore, the light emitted from the light source 30 can be efficiently irradiated toward the front of the lamp by the light-transmitting member 40. Thereby, it is possible to notify the surroundings of the driver's 4 intention (that is, the intention of the vehicle to turn left) by turning on the vehicle lamp 10.
　その上で、透光部材４０は、光源３０に対して灯具前方斜め下方に位置する領域が、光源３０からの出射光を灯具前方斜め下方の路面へ向けて偏向制御する路面照射用レンズ部４０Ｄとして構成されているので、この路面照射用レンズ部４０Ｄからの出射光によって車両近傍の路面を照射するという路面照射機能を車両用灯具１０に持たせることができ、これにより周囲への報知機能を高めることができる。 In addition, the light transmitting member 40 has a road illumination lens portion 40D in which a region located diagonally downward in front of the lamp with respect to the light source 30 deflects and controls the emitted light from the light source 30 toward the road surface diagonally downward in front of the lamp. Therefore, the vehicle lamp 10 can have a road illumination function of illuminating the road surface in the vicinity of the vehicle with the light emitted from the road illumination lens part 40D. can be increased.
　その際、路面照射用レンズ部４０Ｄは光源３０からの出射光を偏向制御する構成となっているので、透光部材４０に路面照射機能が付与されたことによって透光部材４０が部分的に厚肉になってしまわないようにすることができる。 At this time, since the road surface illumination lens section 40D is configured to deflect and control the light emitted from the light source 30, the light transmission member 40 is partially thickened by providing the road surface illumination function to the light transmission member 40. You can prevent it from turning into meat.
　このように本実施形態によれば、光源３０と透光部材４０とを備えた車両用灯具１０において、透光部材４０を厚肉にすることなく路面照射機能を持たせることができる。 As described above, according to the present embodiment, the vehicle lamp 10 including the light source 30 and the light-transmitting member 40 can have a road illumination function without making the light-transmitting member 40 thick.
　特に、本実施形態に係る車両用灯具１０はフロントターンシグナルランプであって、その透光部材４０の路面照射用レンズ部４０Ｄが光源３０からの出射光を車両旋回方向へ向けて偏向制御するように構成されているので、その点灯によって運転者４の意思（すなわち車両２の右左折等の動作意思）をより分かりやすく周囲に報知することができる。 In particular, the vehicle lamp 10 according to the present embodiment is a front turn signal lamp, and the road illumination lens portion 40D of the light transmitting member 40 controls the deflection of the light emitted from the light source 30 toward the vehicle turning direction. Since the light is turned on, the intention of the driver 4 (that is, the intention of the vehicle 2 to make a right or left turn, etc.) can be notified to the surroundings more clearly.
　しかも、この路面照射用レンズ部４０Ｄは透光部材４０の中心領域４０Ａと周辺領域４０Ｂとの境界位置に形成されているので、光源３０からの出射光を車両前方路面へ向けて効率良く照射することができる。 Moreover, since the road surface illumination lens section 40D is formed at the boundary between the central region 40A and the peripheral region 40B of the light transmitting member 40, it efficiently irradiates the light emitted from the light source 30 toward the road surface in front of the vehicle. be able to.
　また、本実施形態の透光部材４０は、その路面照射用レンズ部４０Ｄよりも灯具前方斜め下方に位置する後方変位領域４０Ｅの前面４０Ｅａが、周辺領域４０Ｂの出射面４０Ｂ３（すなわち周辺領域４０Ｂにおける一般領域の前面）よりも灯具後方側に変位しているので、路面照射用レンズ部４０Ｄからの出射光が透光部材４０に再入射しまうのを未然に防止することができる。したがって、透光部材４０への再入射によって迷光が発生してしまうのを未然に防止することができ、これにより車両用灯具１０の路面照射機能が不用意に損なわれてしまわないようにすることができる。 Further, in the light-transmitting member 40 of the present embodiment, the front surface 40Ea of the rear displacement region 40E, which is located diagonally lower in front of the lamp than the road surface illumination lens portion 40D, is Since it is displaced toward the rear of the lamp rather than the front surface of the general area, it is possible to prevent the light emitted from the road surface illumination lens portion 40D from re-entering the light-transmitting member 40. Therefore, it is possible to prevent stray light from being generated due to re-injection into the light-transmitting member 40, thereby preventing the road illumination function of the vehicle lamp 10 from being inadvertently impaired. Can be done.
　さらに、本実施形態の透光部材４０は、その周辺領域４０Ｂの後方変位領域４０Ｅの後面４０Ｅｂに、灯具後方へ向けて延びるボス部４０Ｇが形成されているので、車両用灯具１０の配光機能が損なわれないようにした上で、透光部材４０のランプボディ１２に対する位置決め支持が容易に行われるようにすることができる。 Further, in the light transmitting member 40 of the present embodiment, a boss portion 40G extending toward the rear of the lamp is formed on the rear surface 40Eb of the rear displacement region 40E of the peripheral area 40B, so that the light distribution function of the vehicle lamp 10 is improved. It is possible to easily position and support the light-transmitting member 40 with respect to the lamp body 12 while preventing the light-transmitting member 40 from being damaged.
　しかも、この後方変位領域４０Ｅは、その前面４０Ｅａが路面照射用レンズ部４０Ｄから左斜め下方へ向けて略扇状に拡がるように形成されており、かつ、この前面４０Ｅａには複数のレンズ素子４０Ｅｓが凸曲線状の断面形状で路面照射用レンズ部４０Ｄから左斜め下方へ向けて放射状に延びるようにして形成されているので、その後面４０Ｅｂにボス部４０Ｇが形成されているにもかかわらず、その存在を灯具前方側からの目視で認識しにくくすることができる。そしてこれにより、透光部材４０の見映えが損なわれてしまわないようにすることができる。 Moreover, this rear displacement region 40E is formed such that its front surface 40Ea extends diagonally downward to the left from the road surface illumination lens section 40D, and a plurality of lens elements 40Es are disposed on this front surface 40Ea. Since it is formed with a convex curved cross-sectional shape and extends radially from the road surface illumination lens portion 40D toward the left diagonally downward direction, the boss portion 40G is formed on the rear surface 40Eb. It is possible to make the presence difficult to visually recognize from the front side of the lamp. Accordingly, the appearance of the light-transmitting member 40 can be prevented from being impaired.
　上記実施形態においては、車両用灯具１０が車両２の左前部に配置されるフロントターンシグナルランプである場合について説明したが、車両２の右前部に配置されるフロントターンシグナルランプである場合においても、上記実施形態の構成に対して左右対称の構成を採用することにより上記実施形態と同様の作用効果を得ることができる。また、四輪車等の左右前端部に配置されるフロントターンシグナルランプである場合においても上記実施形態と同様の作用効果を得ることができる。さらには、リアターンシグナルランプやサイドターンシグナルランプ等である場合においても上記実施形態と同様の作用効果を得ることができる。 In the above embodiment, a case has been described in which the vehicle lamp 10 is a front turn signal lamp disposed at the front left part of the vehicle 2, but it may also be a front turn signal lamp disposed at the front right part of the vehicle 2. By adopting a configuration that is bilaterally symmetrical to the configuration of the above embodiment, the same effects as those of the above embodiment can be obtained. Further, even in the case of a front turn signal lamp disposed at the left and right front end portions of a four-wheeled vehicle, the same effects as in the above embodiment can be obtained. Furthermore, even in the case of a rear turn signal lamp, a side turn signal lamp, etc., the same effects as in the above embodiment can be obtained.
　次に、上記実施形態の変形例について説明する。 Next, a modification of the above embodiment will be described.
　図６は、本変形例に係る車両用灯具１１０を示す、図１と同様の図である。また、図７は、車両用灯具１１０が搭載された車両１０２を示す平面図である。 FIG. 6 is a diagram similar to FIG. 1, showing a vehicle lamp 110 according to this modification. Further, FIG. 7 is a plan view showing the vehicle 102 on which the vehicle lamp 110 is mounted.
　なお、図６、７において、Ｘで示す方向が車両用灯具１０としての「前方」（車両としては「後方」）であり、Ｙで示す方向が車両用灯具１０としての「左方向」（車両としては「右方向」）であり、Ｚで示す方向が「上方向」である。 In addition, in FIGS. 6 and 7, the direction indicated by is "rightward"), and the direction indicated by Z is "upward".
　図６に示すように、本変形例に係る車両用灯具１１０の基本的な構成は上記実施形態の場合と同様であるが、図７に示すように、搭載対象となる車両１０２が四輪車であって、その車体後部の左右２箇所に配置されるバックアップランプとして構成されている点で上記実施形態の場合と異なっている。 As shown in FIG. 6, the basic configuration of the vehicle lamp 110 according to this modification is the same as that in the above embodiment, but as shown in FIG. This embodiment differs from the above embodiment in that it is configured as a backup lamp placed at two locations on the left and right sides of the rear portion of the vehicle body.
　すなわち本変形例においても、車両用灯具１１０は、ランプボディ１１２と透光カバー１１４とで形成される灯室内に灯具ユニット１２０が収容された構成となっているが、透光カバー１１４は略平板状に形成されており、また、ランプボディ１１２は上記実施形態のランプボディ１２のような灯具取付部１２ａを備えてはいない。 That is, even in this modification, the vehicle lamp 110 has a structure in which the lamp unit 120 is housed in a lamp chamber formed by a lamp body 112 and a transparent cover 114, but the transparent cover 114 is a substantially flat plate. Further, the lamp body 112 does not include the lamp mounting portion 12a like the lamp body 12 of the above embodiment.
　本変形例の灯具ユニット１２０も、灯具前後方向に延びる光軸Ａｘ上に光源１３０が配置されるとともに、その灯具前方側（すなわち車両後方側）に透光部材１４０が配置された構成となっている。 The lamp unit 120 of this modification also has a structure in which a light source 130 is arranged on the optical axis Ax extending in the longitudinal direction of the lamp, and a transparent member 140 is arranged on the front side of the lamp (that is, on the rear side of the vehicle). There is.
　本変形例の光源１３０も発光素子で構成されているが、白色に発光する発光ダイオードで構成されている点で上記実施形態の場合と異なっている。 Although the light source 130 of this modification is also composed of a light emitting element, it differs from the above embodiment in that it is composed of a light emitting diode that emits white light.
　また、本変形例の透光部材１４０も、中心領域１４０Ａと周辺領域１４０Ｂと外周環状領域１４０Ｃと路面照射用レンズ部１４０Ｄと後方変位領域１４０Ｅとを備えた構成となっているが、路面照射用レンズ部１４０Ｄおよび後方変位領域１４０Ｅの配置が上記実施形態の場合と異なっている。 Furthermore, the light transmitting member 140 of this modification also has a configuration including a central region 140A, a peripheral region 140B, an outer circumferential annular region 140C, a road surface illumination lens portion 140D, and a rear displacement region 140E. The arrangement of the lens portion 140D and the rear displacement region 140E is different from that of the above embodiment.
　すなわち本変形例においては、路面照射用レンズ部１４０Ｄおよび後方変位領域１４０Ｅが光軸Ａｘの真下に配置されている。 That is, in this modification, the road surface illumination lens portion 140D and the rear displacement region 140E are arranged directly below the optical axis Ax.
　そして、路面照射用レンズ部１４０Ｄは、光源１３０からの出射光を灯具正面方向の斜め下方に位置する路面（すなわち車両１０２の真後ろに位置する路面）へ向けて偏向制御するように構成されており、その光軸Ａｘは灯具正面視において真下の方向へ延びている。 The road surface illumination lens section 140D is configured to deflect and control the light emitted from the light source 130 toward a road surface located diagonally downward in the front direction of the lamp (that is, a road surface located directly behind the vehicle 102). , the optical axis Ax extends directly below when viewed from the front of the lamp.
　本変形例の透光部材１４０においても、中心領域１４０Ａ、周辺領域１４０Ｂおよび外周環状領域１４０Ｃの構成自体は上記実施形態の場合と同様であり、また、路面照射用レンズ部１４０Ｄおよび後方変位領域１４０Ｅの構成自体も上記実施形態の場合と同様である。 In the light-transmitting member 140 of this modification, the configurations of the central region 140A, peripheral region 140B, and outer circumferential annular region 140C are the same as in the above embodiment, and also the road illumination lens portion 140D and the rear displacement region 140E. The configuration itself is also the same as that of the above embodiment.
　なお、本変形例においても、ホルダー１５０の構成は上記実施形態の場合と同様である。 Note that also in this modification, the configuration of the holder 150 is the same as in the above embodiment.
　図７においては、車両１０２が、左右１対の車両用灯具１１０を点灯させながら図示矢印方向へ後退している状態を示している。 FIG. 7 shows a state in which the vehicle 102 is moving backward in the direction of the arrow shown while turning on the left and right pair of vehicle lamps 110.
　図７に示すように、左右１対の車両用灯具１１０の点灯によって車両後方へ向けて光照射が行われ、これにより車両１０２が後退していることが周囲に報知されるが、このとき透光部材１４０の路面照射用レンズ部１４０Ｄからの照射光によって、車両後方近傍の路面に左右１対の路面配光パターンＰ－１が形成される。各路面配光パターンＰ－１は、車両１０２の真後ろの方向へ向けて略帯状に延びる白色の配光パターンとして形成され、これにより車両１０２が後退していることがより明確に周囲に報知される。 As shown in FIG. 7, light is emitted toward the rear of the vehicle by lighting a pair of left and right vehicle lamps 110, thereby notifying the surroundings that the vehicle 102 is moving backward. A pair of left and right road surface light distribution patterns P-1 are formed on the road surface near the rear of the vehicle by the irradiated light from the road surface illumination lens portion 140D of the light member 140. Each road surface light distribution pattern P-1 is formed as a white light distribution pattern that extends in a substantially band-like direction directly behind the vehicle 102, thereby more clearly informing the surroundings that the vehicle 102 is moving backward. Ru.
　本変形例の構成を採用した場合においても、上記実施形態と略同様の作用効果を得ることができる。すなわち、車両用灯具１１０の点灯による運転者の意思（すなわち車両後退の動作意思）を周囲に報知することができる。 Even when the configuration of this modification is adopted, substantially the same effects as those of the above embodiment can be obtained. That is, by lighting the vehicle lamp 110, the driver's intention (that is, the intention to move the vehicle backward) can be notified to the surroundings.
　なお、上記実施形態およびその変形例において諸元として示した数値は一例にすぎず、これらを適宜異なる値に設定してもよいことはもちろんである。 Note that the numerical values shown as specifications in the above embodiment and its modified examples are merely examples, and it goes without saying that these may be set to different values as appropriate.
　また、本願発明は、上記実施形態およびその変形例に記載された構成に限定されるものではなく、これ以外の種々の変更を加えた構成が採用可能である。 Furthermore, the present invention is not limited to the configurations described in the above embodiments and modifications thereof, and configurations with various other changes can be adopted.
　本国際出願は、２０２２年７月８日に出願された日本国特許出願である特願２０２２－１１０８４２号に基づく優先権を主張するものであり、当該日本国特許出願である特願２０２２－１１０８４２号の全内容は、本国際出願に援用される。 This international application claims priority based on Japanese patent application No. 2022-110842, which is a Japanese patent application filed on July 8, 2022. The entire contents of No. 1 are incorporated by reference into this international application.
　本発明の特定の実施の形態についての上記説明は、例示を目的として提示したものである。それらは、網羅的であったり、記載した形態そのままに本発明を制限したりすることを意図したものではない。数多くの変形や変更が、上記の記載内容に照らして可能であることは当業者に自明である。 The above descriptions of specific embodiments of the invention have been presented for purposes of illustration. They are not intended to be exhaustive or to limit the invention to the precise forms described. It will be apparent to those skilled in the art that numerous modifications and variations are possible in light of the above description.
　２、１０２　車両
　４　運転者
　１０、１１０　車両用灯具
　１２、１１２　ランプボディ
　１２ａ　灯具取付部
　１４、１１４　透光カバー
　２０、１２０　灯具ユニット
　３０、１３０　光源
　３０ａ　発光面
　３２　基板
　３２ａ　ピン挿通孔
　３２ｂ　ボス挿通孔
　４０、１４０　透光部材
　４０Ａ、１４０Ａ　中心領域
　４０Ａａ、４０Ｃａ、４０Ｄａ、４０Ｅａ　前面
　４０Ａｂ、４０Ｃｂ、４０Ｄｂ、４０Ｅｂ　後面
　４０Ｂ、１４０Ｂ　周辺領域
　４０Ｂ１　入射面
　４０Ｂ２　全反射面
　４０Ｂ３　出射面
　４０Ｂ３ｓ　レンズ素子
　４０Ｃ、１４０Ｃ　外周環状領域
　４０Ｃｃ　環状フランジ部
　４０Ｃｓ　レンズ素子
　４０Ｄ、１４０Ｄ　路面照射用レンズ部
　４０Ｅ、１４０Ｅ　後方変位領域
　４０Ｅｓ　レンズ素子
　４０Ｆ　位置決めピン
　４０Ｆａ、４０Ｇａ　位置決め用突起部
　４０Ｇ　ボス部
　５０、１５０　ホルダー
　５０ａ　外周前端面
　５０ｂ　ネジ挿通孔
　５０ｃ　外周フランジ部
　６０　ネジ
　Ａｘ、Ａｘ１　光軸
　Ｐ、Ｐ－１　路面配光パターン 2, 102 Vehicle 4 Driver 10, 110 Vehicle lamp 12, 112 Lamp body 12a Light fitting part 14, 114 Transparent cover 20, 120 Light unit 30, 130 Light source 30a Light emitting surface 32 Board 32a Pin insertion hole 32b Boss insertion hole 40, 140 Transparent member 40A, 140A Center region 40Aa, 40Ca, 40Da, 40Ea Front surface 40Ab, 40Cb, 40Db, 40Eb Rear surface 40B, 140B Peripheral region 40B1 Incident surface 40B2 Total reflection surface 40B3 Output surface 40B3s Lens element 40C, 14 0C outer ring shape Area 40Cc Annular flange portion 40Cs Lens element 40D, 140D Lens portion for road illumination 40E, 140E Rear displacement region 40Es Lens element 40F Positioning pin 40Fa, 40Ga Positioning protrusion 40G Boss portion 50, 150 Holder 50a Outer circumference front end surface 50b Screw insertion hole 50c Outer flange 60 Screw Ax, Ax1 Optical axis P, P-1 Road light distribution pattern

Claims (5)

  1. 　光源と、上記光源の灯具前方側に配置された透光部材と、を備えた車両用灯具において、
    　上記透光部材は、上記光源の灯具前方に位置する中心領域と、上記中心領域の周囲に位置する周辺領域とを備えており、
    　上記中心領域は、上記光源からの出射光を偏向制御するレンズ部として構成されており、
    　上記周辺領域は、上記光源からの出射光を入射させる入射面と、上記入射面から入射した光を灯具前方へ向けて全反射させる全反射面と、上記全反射面で全反射した光を灯具前方へ向けて出射させる出射面とを備えており、
    　上記透光部材は、上記光源に対して灯具前方斜め下方に位置する領域が上記光源からの出射光を灯具前方斜め下方の路面へ向けて偏向制御する路面照射用レンズ部として構成されている、ことを特徴とする車両用灯具。     A vehicle lamp comprising a light source and a transparent member disposed on the front side of the lamp of the light source,
    The light-transmitting member includes a center region located in front of the lamp of the light source, and a peripheral region located around the center region,
    The central region is configured as a lens portion that deflects and controls the light emitted from the light source,
    The peripheral area includes an entrance surface that receives the light emitted from the light source, a total reflection surface that totally reflects the light that has entered from the entrance surface toward the front of the lamp, and a total reflection surface that reflects the light that has been totally reflected by the total reflection surface toward the front of the lamp. It is equipped with an emission surface that emits light toward the front,
    The light-transmitting member is configured such that a region located diagonally downward in front of the lamp with respect to the light source is configured as a road surface illumination lens portion that deflects and controls the emitted light from the light source toward a road surface diagonally downward in front of the lamp. A vehicle lamp characterized by:
  2. 　上記路面照射用レンズ部は、上記光源からの出射光を車両旋回方向へ向けて偏向制御するように構成されている、ことを特徴とする請求項１記載の車両用灯具。 2. The vehicular lamp according to claim 1, wherein the road illumination lens section is configured to deflect and control the light emitted from the light source toward a vehicle turning direction.
  3. 　上記路面照射用レンズ部は、上記中心領域と上記周辺領域との境界位置に形成されている、ことを特徴とする請求項１または２記載の車両用灯具。 3. The vehicle lamp according to claim 1, wherein the road illumination lens portion is formed at a boundary between the central region and the peripheral region.
  4. 　上記周辺領域における上記路面照射用レンズ部よりも灯具前方斜め下方に位置する領域の前面が、上記周辺領域における一般領域の前面よりも灯具後方側に変位している、ことを特徴とする請求項１または２記載の車両用灯具。 Claim characterized in that the front surface of an area located obliquely below the front of the lamp in the peripheral area with respect to the road illumination lens part is displaced toward the rear of the lamp with respect to the front of the general area in the peripheral area. The vehicle lamp according to 1 or 2.
  5. 　上記周辺領域における上記路面照射用レンズ部よりも灯具前方斜め下方に位置する領域の後面に、灯具後方へ向けて延びるボス部が形成されている、ことを特徴とする請求項１または２記載の車両用灯具。 3. The lamp according to claim 1, wherein a boss portion extending toward the rear of the lamp is formed on the rear surface of an area located obliquely below the front of the lamp than the road illumination lens portion in the peripheral area. Vehicle lighting.
PCT/JP2023/024547 2022-07-08 2023-07-03 Vehicle lamp WO2024009923A1 (en)

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JP2022110842A JP2024008731A (en) 2022-07-08 2022-07-08 Vehicular lighting fixture
JP2022-110842 2022-07-08

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WO2024009923A1 true WO2024009923A1 (en) 2024-01-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008300154A (en) * 2007-05-30 2008-12-11 Koito Mfg Co Ltd Lighting lamp for vehicle
JP2021034309A (en) * 2019-08-28 2021-03-01 株式会社小糸製作所 Turn signal lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008300154A (en) * 2007-05-30 2008-12-11 Koito Mfg Co Ltd Lighting lamp for vehicle
JP2021034309A (en) * 2019-08-28 2021-03-01 株式会社小糸製作所 Turn signal lamp

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