WO2023038010A1 - 車両用導光体及び車両用灯具ユニット - Google Patents
車両用導光体及び車両用灯具ユニット Download PDFInfo
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- WO2023038010A1 WO2023038010A1 PCT/JP2022/033292 JP2022033292W WO2023038010A1 WO 2023038010 A1 WO2023038010 A1 WO 2023038010A1 JP 2022033292 W JP2022033292 W JP 2022033292W WO 2023038010 A1 WO2023038010 A1 WO 2023038010A1
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- Prior art keywords
- light
- vehicle
- pattern
- reflected
- light guide
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 230000004313 glare Effects 0.000 claims description 48
- 230000001629 suppression Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 11
- 230000003287 optical effect Effects 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 6
- 230000031700 light absorption Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
-
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- 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
- F21S41/27—Thick lenses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
- F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
- F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines
Definitions
- the present invention relates to a vehicle light guide and a vehicle lamp unit.
- a configuration is known in which functions corresponding to each of a reflector, a shade, a projection lens, etc. are integrated into one vehicle light guide (see, for example, Patent Document 1).
- a light guide for a vehicle includes an incident surface for receiving light from a light source, an internal reflecting surface (corresponding to a reflector) for internally reflecting the incident light, and a part of the internally reflected light. and an emission surface (corresponding to the projection lens) that emits the light that is internally reflected and passes through the light shielding portion to illuminate the light distribution pattern in front of the vehicle.
- the present invention has been made in view of the above, and an object of the present invention is to provide a vehicle light guide and a vehicle lamp unit capable of irradiating a light distribution pattern in front of a vehicle with appropriate illuminance.
- a light guide for a vehicle comprises an incident surface for receiving light from a light source, a first reflecting surface for internally reflecting the light incident from the incident surface to convert the light into substantially parallel light, and the first reflecting surface.
- a second reflecting surface that internally reflects the light reflected by the surface toward the front; a light blocking portion that blocks part of the light reflected by the second reflecting surface; and a front end of the second reflecting surface. and an adjusting surface extending forward from the second reflecting surface and extending upward in the vertical direction from the front end of the adjusting surface to transmit part of the light reflected by the second reflecting surface to the outside of the light guide.
- a transmission surface a connection surface that connects an upper end portion of the transmission surface and the light shielding portion, and internally reflects forward a part of the light internally reflected by the second reflection surface; and the transmission surface. and a re-incident surface disposed forwardly of and below the light-shielding portion for re-entering the light transmitted from the transmission surface to the outside of the light guide; A light shielding portion or an exit surface for outputting the light passing above the light shielding portion and the light incident from the re-incidence surface is provided.
- the vehicle light guide further includes a first glare suppressing surface disposed on the transmissive surface and internally reflecting upward a part of the light reflected by the second reflecting surface.
- the transmitting surface is divided by the first glare suppressing surface and arranged at a plurality of locations.
- the vehicle light guide further includes a second glare suppression surface arranged on the re-incidence surface for downwardly reflecting part of the light transmitted from the transmission surface to the outside of the light guide.
- the re-incidence surface is divided by the stepped portion and arranged at a plurality of locations.
- the emission surface emits a light distribution pattern in front of the vehicle.
- the light distribution pattern is internally reflected by the second reflecting surface, passes above the connection surface, passes through the light shielding portion or above the light shielding portion, and passes through the exit surface.
- a second pattern formed by the emitted light includes a main pattern that overlaps in front of the vehicle.
- the first pattern and the second pattern have cut-off lines overlapping each other at upper ends, and the second pattern has a cut-off line at a lower end than the first pattern.
- a vehicle lamp unit includes a light source, and a plurality of the vehicle light guides for guiding and emitting light from the light source.
- the present invention it is possible to illuminate the light distribution pattern in front of the vehicle with appropriate illuminance.
- FIG. 1 is a plan view showing an example of a vehicle lamp according to this embodiment.
- FIG. 2 is a diagram showing the configuration along the AA cross section in FIG. 3 is an enlarged view of a part of FIG. 2.
- FIG. 4 is a perspective view showing an example of the transmissive surface viewed from the outside of the vehicle light guide.
- FIG. 5 is a perspective view showing an example of the re-incidence surface viewed from the outside of the vehicle light guide.
- FIG. 6 is a diagram showing an example of an optical path guided by a vehicle light guide.
- FIG. 7 is a diagram showing an example of an optical path guided by a vehicle light guide.
- FIG. 8 is a diagram showing an example of a light distribution pattern irradiated onto a virtual screen in front of the vehicle.
- FIG. 9 is a diagram showing an example of a vehicle lamp unit according to this embodiment.
- FIG. 10 is a perspective view showing a vehicle light guide according to another example.
- FIG. 11 is a perspective view showing a vehicle light guide according to another example.
- FIG. 12 is a diagram showing an example of a light distribution pattern illuminated on a virtual screen in front of a right-hand traffic vehicle.
- front and rear, up and down, and left and right directions are the directions in which the vehicle headlamp is mounted in the vehicle, and the directions when viewed from the driver's seat in the traveling direction of the vehicle. .
- the up-down direction is parallel to the vertical direction
- the left-right direction is the horizontal direction.
- FIG. 1 is a plan view showing an example of a vehicle lamp 100 according to this embodiment.
- FIG. 2 is a diagram showing the configuration along the AA cross section in FIG. 3 is an enlarged view of a part of FIG. 2.
- FIG. 1 is a plan view showing an example of a vehicle lamp 100 according to this embodiment.
- FIG. 2 is a diagram showing the configuration along the AA cross section in FIG. 3 is an enlarged view of a part of FIG. 2.
- FIG. 1 is a plan view showing an example of a vehicle lamp 100 according to this embodiment.
- FIG. 2 is a diagram showing the configuration along the AA cross section in FIG. 3 is an enlarged view of a part of FIG. 2.
- the vehicle lamp 100 can emit a light distribution pattern PF (see FIG. 7), which will be described later, in front of the vehicle.
- the light distribution pattern PF includes, for example, a low beam pattern P1 as a main pattern and an overhead pattern P2 as an upper pattern.
- a vehicle lamp 100 includes a light source 10 and a vehicle light guide 20 .
- the vehicle lamp 100 may further include other units having a light source, a reflector, a shade, a projection lens, and the like.
- the configuration of the vehicle lamp 100 mounted on a vehicle traveling on a left-hand traffic road will be described as an example.
- the light source 10 is, for example, a semiconductor type light source such as an LED or an OLED (organic EL), a laser light source, or the like.
- the light emitting surface 11 is arranged to face an incident surface 21 of a vehicle light guide 20 which will be described later.
- the light emitting surface 11 is placed facing the vehicle light guide 20 .
- a plurality of, for example, four, light sources 10 are arranged in the horizontal direction.
- the number of light sources 10 is not limited to four, and may be three or less, or may be five or more.
- the vehicular light guide 20 guides the light from the light source 10 and emits it forward when mounted on the vehicle.
- the vehicular light guide 20 according to this embodiment has a configuration in which functions corresponding to a reflector, a shade, a projection lens, and the like in a conventional projector-type vehicular headlamp are integrated, for example.
- the vehicle light guide 20 includes an incident surface 21, a first reflecting surface 22, a second reflecting surface 23, a light blocking portion 24, an adjusting surface 25, and a transmitting surface 26. , a connection surface 27 , a re-entrance surface 28 and an exit surface 29 .
- a plurality of incident surfaces 21 are provided, for example, for each light source 10 .
- the incident surface 21 may be provided at a position that does not correspond to the light source 10 one-to-one.
- one light source 10 may be provided with a plurality of incident surfaces 21 .
- the plurality of incident surfaces 21 are arranged side by side in the left-right direction in the vehicle-mounted state.
- the incident surface 21 is formed, for example, in a truncated cone shape. In this embodiment, for example, four incident surfaces 21 are arranged.
- the diameter of the entrance surface 21 arranged on the outer side in the left-right direction may be smaller than the diameter of the entrance surface 21 arranged on the center side in the left-right direction.
- the diameters of the two entrance surfaces 21 arranged on the outside in the left-right direction are smaller than the diameters of the two entrance surfaces 21 on the central side in the left-right direction.
- Each incident surface 21 has a first surface 21a and a second surface 21b, as shown in FIG.
- Light from the light source 10 is incident on the first surface 21a and the second surface 21b.
- the first surface 21 a faces the light emitting surface 11 .
- the first surface 21a is, for example, a convex surface protruding toward the light source 10, but may be a flat surface.
- the second surface 21b is arranged on the side of the light source 10 and arranged in a cylindrical surface so as to surround the light emitting surface 11 and the first surface 21a of the light source 10 .
- the first reflecting surface 22 internally reflects the light that has entered from the incident surface 21 into substantially parallel light.
- the first reflecting surface 22 is arranged to surround the second surface 21 b of the incident surface 21 and reflects the light incident from the second surface 21 b toward the second reflecting surface 23 .
- the first reflecting surface 22 is provided corresponding to the incident surface 21 .
- a plurality of first reflecting surfaces 22 are arranged side by side in the left-right direction in the vehicle-mounted state.
- the plurality of first reflecting surfaces 22 includes a condensing pattern reflecting surface and a diffusion pattern reflecting surface.
- the two first reflecting surfaces 22 arranged on the central side in the left-right direction are used as condensing pattern reflecting surfaces
- the two first reflecting surfaces 22 arranged on both sides in the left-right direction are used as diffusion pattern reflecting surfaces. be able to.
- the first reflecting surface 22 has a first rear area 22a and a first front area 22b.
- the first rear region 22 a is arranged rearward with respect to the light source 10 .
- the first rear area 22a is arranged rearward in the front-rear direction with respect to the optical axis AX of the light source 10, for example.
- the first front region 22b is arranged in front of the light source 10 .
- the first front region 22b is arranged forward with respect to the virtual plane S, for example.
- the second reflecting surface 23 has a shape based on a paraboloid of revolution.
- the second reflecting surface 23 has a focal point P that coincides or substantially coincides with the focal point of the paraboloid of revolution.
- the focal point P is located near the focal point of the exit surface 29, which will be described later.
- the second reflecting surface 23 reflects the light from the first reflecting surface 22 toward the focal point P side, that is, toward the front of the vehicle.
- the second reflecting surface 23 has an axis parallel or substantially parallel to the optical axis of the light reflected by the first reflecting surface 22, and internally reflects the light toward the focus P side of the paraboloid of revolution.
- the second reflecting surface 23 includes a condensing pattern forming area arranged corresponding to the condensing pattern reflecting surface of the first reflecting surface 22 and arranged corresponding to the diffusion pattern reflecting surface of the first reflecting surface 22 . and a diffusion pattern forming region.
- the condensing pattern forming area is arranged in the center of the second reflecting surface 23 in the left-right direction.
- the diffusion pattern forming area is arranged outside the condensing pattern forming area in the left-right direction on the second reflecting surface 23 .
- the condensing pattern forming area is arranged, for example, in the center in the horizontal direction, and internally reflects the light from the first reflecting surface 22 so as to pass through the focal point P and the vicinity of the focal point P. As shown in FIG.
- the diffusion pattern forming area internally reflects the light from the first reflecting surface 22 so that the light including the focus P is shifted outward in the vehicle mounted state in the horizontal direction.
- the diffusion pattern forming area is arranged corresponding to the diffusion pattern reflecting surface among the plurality of first reflecting surfaces 22 .
- the second reflecting surface 23 has a second rear area 23a and a second front area 23b. Light reflected by the first rear region 22a enters the second rear region 23a. The second rear region 23a internally reflects forward the light reflected by the first rear region 22a.
- the second front region 23b is connected to the front end of the second rear region 23a. Light reflected by the first front region 22b enters the second front region 23b. The second front region 23b internally reflects forward the light reflected by the first front region 22b. The second front region 23b is provided, for example, in a state of being extended forward from the front end of the second rear region 23a. The second front region 23b is smoothly connected to the second rear region 23a. Note that the second front region 23b may be connected to the second rear region 23a in a non-smooth manner. For example, a step may be provided between the second front region 23b and the second rear region 23a. The second front region 23b is arranged below the light shielding portion 24, which will be described later, in the vertical direction.
- the light shielding portion 24 shields part of the light internally reflected by the second rear region 23 a of the second reflecting surface 23 .
- the light shielding portion 24 is provided at the front end portion (corner portion 20g) of the connection surface 27, which will be described later.
- the corner portion 20g is concave when the vehicle light guide 20 is viewed from the outside (below).
- the corner portion 20g extends straight or curved in the left-right direction.
- the light shielding portion 24 forms a cutoff line CL (see FIG. 8) of the low beam pattern P1 in the light distribution pattern PF, which will be described later, at the corner portion 20g.
- the cutoff line CL includes a horizontal cutoff line CLa and an oblique cutoff line CLb.
- the corner portion 20g has a horizontal portion (not shown) for forming a horizontal cutoff line CLa and an inclined surface portion (not shown) for forming an oblique cutoff line CLb.
- the light shielding portion 24 is provided in a region including the corner portion 20g.
- the light shielding portion 24 may shield light by, for example, refracting or internally reflecting the light reaching the light shielding portion 24 in a direction different from the direction of the exit surface 29.
- a light absorption layer may be arranged in a portion corresponding to the light shielding portion 24, and the light may be blocked by absorbing the light with the light absorption layer.
- the light internally reflected or refracted by the light shielding portion 24 is emitted to the outside of the vehicle light guide 20 and is absorbed by an inner housing or the like arranged outside the vehicle light guide 20 .
- the adjusting surface 25 extends forward from the front end of the second reflecting surface 23, that is, from the front end of the second front region 23b.
- the adjustment surface 25 is provided along the horizontal plane.
- the adjustment surface 25 is planar, for example.
- the adjustment surface 25 is not limited to a planar shape, and may be curved.
- the adjustment surface 25 is not limited to a configuration along the horizontal plane, and may have a configuration in which the front side is inclined downward with respect to the horizontal plane.
- the adjusting surface 25 internally reflects part of the light internally reflected by the second reflecting surface 23 in a direction not to be emitted from the emitting surface 29, such as a direction in which an upper surface 20h described later is arranged.
- FIG. 4 is a perspective view showing an example when the transmissive surface 26 is viewed from the outside of the vehicle light guide 20. As shown in FIG. The transmission surface 26 is provided in a state corresponding to the second front region 23b.
- the transmission surface 26 is planar, for example, and has a shape that is inclined upward from the rear to the front. The transmission surface 26 transmits the light reflected by the second front region 23b to the outside of the light guide and directs it forward.
- the transmission surface 26 transmits the light from the second reflection surface 23 to the outside of the vehicle light guide 20 and emits it forward (see FIG. 7).
- the light passing through the transmission surface 26 to the outside of the light guide and traveling forward is incident on a re-incidence surface 28, which will be described later. do.
- a first glare suppression surface 31 is arranged on the transmission surface 26 .
- the first glare suppressing surface 31 internally reflects upward a part of the light reflected by the second front region 23b.
- the first glare suppressing surface 31 internally reflects part of the light internally reflected by the second front region 23b in a direction in which the upper surface 20h, which will be described later, is arranged.
- the first glare suppressing surface 31 internally reflects upward the light corresponding to the area PA (see FIG. 8) near line HH so that the light does not exit from the exit surface 29 .
- the first glare suppression surface 31 is arranged with the upper side extending obliquely forward with respect to the transmission surface 26 .
- the first glare suppression surface 31 is arranged above the transmission surface 26, for example.
- the first glare suppressing surface 31 is formed in a strip shape, as shown in FIG.
- the arrangement and shape of the first glare suppressing surface 31 are not limited to the above configuration.
- connection surface 27 connects between the upper end of the transmission surface 26 and the light shielding portion 24 .
- the connection surface 27 is positioned below the vehicle light guide 20 and arranged along the horizontal plane.
- the connection surface 27 is provided from the light shielding portion 24 to the connection portion with the upper end portion of the transmission surface 26 . Therefore, in the connection surface 27, an area capable of internal reflection is secured in the front-rear direction.
- the dimension of the connection surface 27 in the front-rear direction can be set according to the dimension in the front-rear direction of the adjustment surface 25 described above. That is, when the distance in the front-rear direction from the second reflecting surface 23 to the light shielding portion 24 is constant, the size in the front-rear direction of the connecting surface 27 is relatively increased by increasing the size in the front-rear direction of the adjustment surface 25 .
- the dimension in the front-rear direction of the connection surface 27 can be made relatively large.
- the dimension of the adjustment surface 25 in the front-rear direction can be set within a range of 0.5 to 2 times the dimension of the connection surface 27 in the front-rear direction.
- the re-incident surface 28 is bent downward with respect to the connection surface 27 .
- the re-entrance surface 28 is formed in a state inclined forward from top to bottom.
- the re-incident surface 28 re-incidents the light transmitted through the transmission surface 26 to the outside.
- the light re-entering from the re-incidence surface 28 travels from the lower side of the light shielding portion 24 toward the exit surface 29 .
- FIG. 5 is a perspective view showing an example of the re-incidence surface 28 viewed from the outside of the vehicle light guide 20.
- the second glare suppressing surface 32 reflects downward part of the light transmitted from the transmitting surface 26 to the outside.
- the light reflected by the second glare suppression surface 32 is emitted to the outside of the vehicle light guide 20 without reaching the re-incidence surface 28 .
- the second glare suppressing surface 32 internally reflects downward the light corresponding to the area PA (see FIG. 8) near line HH so that the light does not exit from the exit surface 29 .
- the second glare suppression surface 32 is arranged with its upper side extending obliquely rearward with respect to the transmission surface 26 . Further, as shown in FIG. 5, the second glare suppressing surface 32 is formed with a constant width in the vertical direction from the left end to the center in the left-right direction.
- the arrangement and shape of the second glare suppressing surface 32 are not limited to the above configuration.
- the emission surface 29 emits the light that is internally reflected by the second reflecting surface 23 and is not blocked by the light blocking portion 24 and the light that has entered from the re-incident surface 28, and forms a light distribution pattern PF (see FIG. 8) in front of the vehicle. to irradiate.
- the exit surface 29 is curved, for example, and has a focal point (not shown) and an optical axis.
- the emission surface 29 may be planar, for example, and another optical element may be arranged to irradiate the light emitted from the emission surface 29 forward of the vehicle.
- the focal point of the exit surface 29 is located near the focal point P of the second reflecting surface 23 .
- the width of the exit surface 29 in the left-right direction may be narrower than the width of the second reflecting surface 23 in the left-right direction. In this case, the dimension of the output surface 29 when viewed from the outside can be suppressed.
- a light diffusing part such as a prism part may be formed on the upper surface 20h of the vehicle light guide 20 .
- the light diffusing portion diffuses the light internally reflected by the second reflecting surface 23 . Therefore, it is possible to prevent the light emitted from the upper surface 20h to the outside of the vehicle light guide 20 from becoming glare.
- FIG. 6 and 7 are diagrams showing examples of optical paths guided by the vehicle light guide 20.
- FIG. 6 and 7 are shown separately for easy identification of the optical paths.
- the light emitted from the light source 10 is separated into the optical path shown in FIG. 6 and the optical path shown in FIG. not.
- Light is emitted from the light emitting surface 11 by turning on the light source 10 of the vehicle lamp 100 .
- This light enters the vehicle light guide 20 from the first surface 21 a and the second surface 21 b of the incident surface 21 .
- the light incident from the first surface 21a travels toward the first reflecting surface 22 side.
- Light incident from the second surface 21 b is internally reflected toward the second reflecting surface 23 at the first reflecting surface 22 .
- connection surface 27 part of the light L2 that has reached the second rear region 23a reaches the connection surface 27 after being internally reflected by the second rear region 23a.
- the connection surface 27 is formed over the entire front-rear direction from the light shielding portion 24 to the transmission surface 26 . Therefore, the light L2 reaching the connection surface 27 is internally reflected toward the front of the vehicle without waste.
- Light L ⁇ b>2 internally reflected by the connection surface 27 passes above the light shielding portion 24 and reaches the emission surface 29 .
- the light L2 that has reached the exit surface is emitted from the exit surface 29 to the front of the vehicle.
- part of the light L3 that has reached the second rear region 23a reaches the adjustment surface 25 after being internally reflected by the second rear region 23a.
- the light L3 reaching the adjusting surface 25 is internally reflected by the adjusting surface 25 and emitted to the outside of the vehicle light guide 20 from the upper surface 20h. This light L3 is not emitted from the emission surface 29 .
- the shape of the pattern of the light L2 emitted from the emission surface 29 is adjusted.
- Light L4 which is part of the light that has reached the second front region 23b of the first reflecting surface 22, is internally reflected by the second front region 23b, passes above the adjustment surface 25, and reaches the transmission surface 26. do.
- the transmission surface 26 is arranged to face the second front region 23b while protruding upward from the front end of the adjustment surface 25 . Therefore, the light L4 reflected by the second front region 23b is transmitted through the transmission surface 26 to the outside of the light guide without waste.
- the light L4 transmitted through the transmission surface 26 to the outside of the light guide travels forward through the outside of the light guide, passes below the light shielding portion 24, and enters the vehicle light guide 20 from the re-incidence surface 28. re-incident on The re-entered light L4 reaches the emission surface 29 and is emitted from the emission surface 29 to the front of the vehicle.
- light L5 which is part of the light that has reached the second front region 23b, is internally reflected by the second front region 23b, passes above the adjustment surface 25, and reaches the first glare suppression surface 31. do.
- the light L5 reaching the first glare suppressing surface 31 is internally reflected upward by the first glare suppressing surface 31 and emitted to the outside of the vehicle light guide 20 from the upper surface 20h. This light L5 is not emitted from the emission surface 29 .
- light L6, which is part of the light that has reached the second front region 23b is transmitted through the transmission surface 26 to the outside of the light guide and reaches the second glare suppression surface 32. As shown in FIG.
- the light L ⁇ b>6 reaching the second glare suppressing surface 32 is internally reflected downward by the second glare suppressing surface 32 . This light L6 does not enter the re-incidence surface 28 and does not exit from the exit surface 29 .
- light L7 which is part of the light incident from the first surface 21a, is internally reflected by the second rear region 23a of the second reflecting surface 23, and is reflected on the connecting surface 27 and the light shielding portion 24. It passes above and reaches the exit surface 29 .
- the light L7 that has reached the exit surface 29 is emitted from the exit surface 29 to the front of the vehicle.
- Light L8, which is part of the light incident from the first surface 21a, is internally reflected by the second rear region 23a of the second reflecting surface 23, passes through the light shielding portion 24, and reaches the exit surface 29.
- the light L8 that has reached the exit surface 29 is emitted from the exit surface 29 to the front of the vehicle.
- light L9 which is part of the light incident from the first surface 21a, is internally reflected by the second rear region 23a, reaches the connection surface 27, and is internally reflected by the connection surface 27 to the front of the vehicle.
- Light L ⁇ b>9 internally reflected by the connection surface 27 passes above the light shielding portion 24 and reaches the emission surface 29 .
- the light L9 that has reached the exit surface is emitted forward from the exit surface 29 of the vehicle.
- FIG. 8 is a diagram showing an example of a light distribution pattern illuminated on a virtual screen in front of the vehicle.
- FIG. 8 shows a pattern corresponding to a left-hand traffic vehicle.
- the VV line indicates the vertical line of the screen
- the HH line indicates the left and right horizontal lines of the screen.
- the intersection of the vertical line and the horizontal line is assumed to be the reference position in the horizontal direction.
- the lights L1, L2, and L4 emitted from the emission surface 29 are irradiated in front of the vehicle as a light distribution pattern PF, as shown in FIG. Specifically, the lights L1 and L2 that have passed above the light shielding portion 24 and reached the exit surface 29 form a low beam pattern P1 including the cutoff line CL.
- FIG. 8 illustrates an example in which the oblique cutoff line CLb of the cutoff lines CL is formed so as to be inclined downward toward the right side. A similar explanation can be applied to the case of tilting downward toward .
- the pattern P1a is formed by the light L1 that is internally reflected by the second rear region 23a, passes over the connection surface 27 and the light shielding portion 24, and reaches the exit surface 29.
- an adjusting surface 25 is arranged between the second rear region 23a and the connecting surface 27. As shown in FIG. Due to this arrangement, part of the light (light L3) reflected by the second rear area 23a is emitted to the outside through the adjustment surface 25 from a portion other than the emission surface 29 of the vehicle light guide 20 .
- the area of the connection surface 27 is smaller than in the comparative configuration in which the adjustment surface 25 is not provided and the transmission surface 26 is arranged at the front end of the second front region 23b.
- the irradiation area of the pattern P1b by the light L2 becomes narrower than the irradiation area of the comparative pattern PB in the comparative configuration.
- the lower end of the pattern P1b is located above the lower end of the comparison pattern PB. That is, the pattern P1a and the pattern P1b have the cutoff line CL overlapping each other at the upper end, and the pattern P1b is closer to the cutoff line CL at the lower end than the pattern P1a.
- the low beam pattern P1 is a pattern in which the pattern P1a and the pattern P1b are superimposed. Therefore, by narrowing the irradiation area of the pattern P1b, the illuminance of the lower portion of the low beam pattern P1 can be reduced, and the illuminance of the pattern as a whole can be appropriately adjusted.
- the light L5 internally reflected upward by the first glare suppressing surface 31 and the light L6 reflected downwardly by the second glare suppressing surface 32 are not emitted from the emission surface 29, so line HH No pattern is formed in the area corresponding to the nearby area PA. This suppresses the occurrence of glare.
- FIG. 9 is a diagram showing an example of a vehicle lamp unit 200 according to this embodiment.
- FIG. 9 shows an example viewed from the front in a vehicle-mounted state.
- a vehicle lamp unit 200 shown in FIG. 9 includes a housing 201 , an outer lens 202 , a light source 10 , and a plurality of vehicle light guides 20 .
- the vehicle lamp unit 200 has a configuration in which, for example, two vehicle light guides 20 are arranged in a lamp chamber surrounded by a housing 201 and an outer lens 202 .
- the number of vehicle light guides 20 arranged in the lamp chamber may be one or three or more.
- the vehicular light guides 20 are not limited to being arranged in the horizontal direction, but may be arranged in the vertical direction, or may be arranged in the oblique direction. , left-right direction, up-down direction, and oblique direction. Note that the number and arrangement of the light sources 10 may be different for different vehicle light guides 20 .
- one vehicular light guide 20 has a condensing configuration in which the light source 10 is arranged so that light is incident on the incident surface 21 on the center side in the left-right direction
- another vehicular light guide 20 20 may be configured for diffusion in which the light source 10 is arranged so that the light is incident on the incident surface 21 on the outer side in the left-right direction.
- at least one of the configuration for condensing and the configuration for diffusion may be provided in plurality. In this case, while suppressing heat generation from each vehicle light guide 20, the vehicle lamp unit 200 as a whole can appropriately form the low beam pattern P1 in front of the vehicle.
- the vehicular light guide 20 includes the incident surface 21 on which the light from the light source 10 is incident, and the first light incident surface 21 that internally reflects the light incident from the incident surface 21 into substantially parallel light.
- an adjusting surface 25 extending forward from the front end of the second reflecting surface 23;
- a transmission surface 26 that transmits a part of the light to the outside of the light guide and directs it forward is connected to the upper end of the transmission surface 26 and the light shielding part 24, and a part of the light internally reflected by the second reflection surface 23 is transmitted.
- connection surface 27 that internally reflects forward
- a re-incident surface that is disposed in front of the transmission surface 26 and below the light shielding portion 24 and re-injects the light transmitted from the transmission surface 26 to the outside of the light guide.
- the main pattern (low beam pattern P1) is formed by the light L2 that is internally reflected at the light-shielding portion 24 or emitted from the light emitting surface 29 after passing through the light-shielding portion 24 or above the light-shielding portion 24 .
- the adjusting surface 25 is arranged between the second reflecting surface 23 and the connecting surface 27, part of the light (light L3) reflected by the second reflecting surface 23 is reflected by the connecting surface 27.
- the light reaches the adjustment surface 25 without reaching , and is emitted to the outside from a portion other than the emission surface 29 of the vehicle light guide 20 via the adjustment surface 25 .
- the area of the connection surface 27 is smaller than in the comparative configuration in which the adjustment surface 25 is not provided and the transmission surface 26 is arranged at the front end portion of the second reflection surface 23 .
- the irradiation area of the pattern P1b by the light L2 becomes narrower than the irradiation area of the comparative pattern PB in the comparative configuration. Therefore, by narrowing the irradiation area of the pattern P1b by the light L2, the illuminance of a part of the low beam pattern P1 can be reduced, and the illuminance of the entire pattern can be appropriately adjusted.
- the vehicle light guide 20 described above further includes a first glare suppression surface 31 arranged on the transmission surface 26 and internally reflecting upward a part of the light (light L5) reflected by the second reflection surface 23 . Further, the vehicle light guide 20 described above is arranged on the re-incidence surface 28, and a second glare suppressing surface 32 that reflects downward a part of the light (light L6) transmitted from the transmission surface 26 to the outside of the light guide. Further prepare. According to this configuration, the light that irradiates a partial area of the light distribution pattern PF (overhead pattern P2) is attenuated. As a result, for example, it is possible to suppress the dazzle of the preceding vehicle or the oncoming vehicle, or to suppress the generation of glare. Both the first glare suppressing surface 31 and the second glare suppressing surface 32 may be provided, or only one of them may be provided.
- the emission surface 29 irradiates the light distribution pattern PF forward of the vehicle.
- the light distribution pattern PF can be formed in front of the vehicle while the light is effectively utilized by the vehicle light guide 20 in which the entrance surface 21 to the exit surface 29 are integrated.
- the light distribution pattern PF is internally reflected by the second reflecting surface 23, passes above the connection surface 27, passes through the light shielding portion 24 or above the light shielding portion 24, and reaches the output surface.
- the pattern P1a formed by the light L1 emitted from 29 is internally reflected by the second reflecting surface 23, internally reflected by the connecting surface 27, passes through the light shielding portion 24 or above the light shielding portion 24, and exits the output surface 29.
- the pattern P1b formed by the emitted light L2 includes a low beam pattern P1 that overlaps in front of the vehicle.
- the low-beam pattern P1 is a pattern obtained by superimposing the pattern P1a of the light L1 and the pattern P1b of the light L2. The illuminance of a part can be lowered, and the illuminance of the pattern as a whole can be appropriately adjusted.
- the pattern P1a and the pattern P1b have the cutoff line CL overlapping each other at the upper end, and the pattern P1b is closer to the cutoff line CL at the lower end than the pattern P1a.
- a vehicle lamp unit 200 according to the present invention includes a light source 10 and a plurality of vehicle light guides 20 for guiding and emitting light from the light source 10 . According to this configuration, a light distribution pattern PF obtained by combining the irradiation patterns of the plurality of vehicle light guides 20 can be obtained as the vehicle lamp unit 200 as a whole.
- FIGS. 10 and 11 are perspective views showing a vehicle light guide 120 according to another example.
- the vehicle light guide 120 differs from the above embodiment in the configurations of the transmission surface 126, the connection surface 127, the re-incidence surface 128, and the first glare suppression surface 131.
- FIG. Other configurations are the same as those of the above embodiment.
- the same components as those in the above embodiment will be described with the same reference numerals.
- a first glare suppressing surface 131 is arranged on the transmission surface 126 .
- the first glare suppressing surface 131 has strip portions 131a and 131b, a widened portion 131c, and a notch portion 131d.
- the belt-like portion 131a is formed with a constant or substantially constant width in the vertical direction from the right end of the transmission surface 126 toward the central portion in the left-right direction.
- the band-shaped portion 131b is formed with a constant or substantially constant width in the vertical direction from the left end of the transmission surface 126 toward the central portion in the left-right direction.
- the widened portion 131c is disposed between the strip-shaped portion 131a and the strip-shaped portion 131b in the center portion in the left-right direction of the transmission surface 126, and widens downward from the center portion in the left-right direction toward the left side.
- the notch 131d is provided, for example, above the left end of the transmissive surface 126 .
- a portion of the transmission surface 126 described above is arranged in the notch portion 131d. That is, the transmission surfaces 126 are separated by the first glare suppression surfaces 131 and arranged at a plurality of locations. In the example shown in FIG. 10, the transmission surface 126 is separated vertically by the first glare suppressing surface 131 and arranged at two locations (transmission surfaces 126a and 126b).
- the arrangement and shape of the first glare suppressing surface 131 are not limited to the above configuration.
- the re-incidence surfaces 128 are separated by the stepped portions 133 and arranged at a plurality of locations.
- the re-incidence surface 128 is arranged at two locations (re-incidence surfaces 128a and 128b) separated in the vertical direction and the front-rear direction by a stepped portion 133.
- the upper re-incidence surface 128 b in the vertical direction can be arranged on the left side of the second glare suppression surface 132 , for example.
- the re-entrance surface 128b on the upper side in the vertical direction is arranged behind the re-entrance surface 128a on the lower side in the vertical direction.
- the arrangement and shape of the re-incidence surface 128 are not limited to those described above.
- FIG. 12 is a diagram showing an example of a light distribution pattern illuminated on a virtual screen in front of a right-hand traffic vehicle.
- the VV line indicates the vertical line of the screen
- the HH line indicates the left and right horizontal lines of the screen.
- the intersection of the vertical line and the horizontal line is assumed to be the reference position in the horizontal direction.
- the light emitted from the emission surface 29 of the vehicle light guide 120 is emitted in front of the vehicle as a light distribution pattern PF2, as shown in FIG.
- the low beam pattern P3 including the cutoff line CL2 is formed by the light passing above the light shielding portion 24 and reaching the emission surface 29 .
- FIG. 12 illustrates an example in which the oblique cut-off line CLd of the cut-off line CL2 is inclined downward toward the left side.
- the light that is internally reflected by the second rear region 23a passes over the connection surface 27 and the light shielding portion 24, and reaches the exit surface 29 forms a pattern P3a.
- the lower end of the pattern P3b is located above the lower end of the comparison pattern PD. That is, the pattern P3a and the pattern P3b have the cutoff line CL2 overlapping each other at the upper end, and the pattern P3b is closer to the cutoff line CL2 at the lower end than the pattern P3a.
- the low beam pattern P3 is a pattern obtained by superimposing the pattern P3a and the pattern P3b. Therefore, by narrowing the irradiation area of the pattern P3b, the illuminance of the lower portion of the low-beam pattern P3 can be reduced, and the illuminance of the pattern as a whole can be appropriately adjusted.
- P2a, P2b an overhead pattern
- the light internally reflected upward by the first glare suppressing surface 131 and the light reflected downwardly by the second glare suppressing surface 132 are not emitted from the exit surface 29. No pattern is formed in the area corresponding to the area PC near the line. This suppresses the occurrence of glare.
- the light distribution pattern PF has been described by taking a low beam pattern as an example, but it is not limited to this, and other patterns such as a high beam pattern may be used. Further, in the vehicle lamp unit 200 provided with a plurality of vehicle light guides 20, the vehicle light guides 20 forming different types of patterns may be provided.
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Abstract
Description
光源10は、本実施形態において、例えばLEDやOLED(有機EL)などの半導体型光源、レーザ光源等が用いられる。発光面11は、後述の車両用導光体20の入射面21に対向して配置される。発光面11が車両用導光体20に向けられた状態で配置される。本実施形態において、光源10は、左右方向に複数、例えば4つ配置される。なお、光源10の個数は、4つに限定されず、3つ以下であってもよいし、5つ以上であってもよい。
車両用導光体20は、光源10からの光を導光して車両搭載状態における前方に出射する。本実施形態に係る車両用導光体20は、例えば従来のプロジェクタ型の車両用前照灯におけるリフレクタ、シェード、投影レンズ等のそれぞれに対応する機能を集約させた構成である。図1から図3に示すように、車両用導光体20は、入射面21と、第1反射面22と、第2反射面23と、遮光部24と、調整面25と、透過面26と、接続面27と、再入射面28と、出射面29とを備える。
入射面21は、複数、例えば光源10毎に設けられる。なお、入射面21は、光源10とは1対1に対応しない位置に設けられてもよい。例えば、1つの光源10に対して、入射面21が複数設けられる構成であってもよい。複数の入射面21は、車両搭載状態における左右方向に並んで配置される。入射面21は、例えば円錐台状に形成される。本実施形態では、例えば4つの入射面21が配置される。なお、左右方向の中央側に配置される入射面21の径よりも、左右方向の外側に配置される入射面21の径の方が小さくてもよい。本実施形態では、左右方向の中央側の2つの入射面21の径よりも、左右方向の外側に配置される2つの入射面21径の方が小さい。
第1反射面22は、入射面21から入射した光を内面反射して略平行光にする。第1反射面22は、入射面21の第2面21bを囲うように配置され、当該第2面21bから入射した光を第2反射面23に向けて反射する。本実施形態において、第1反射面22は、入射面21に対応して設けられる。第1反射面22は、車両搭載状態における左右方向に複数並んで配置される。複数の第1反射面22は、集光パターン用反射面と、拡散パターン用反射面とを含む。例えば、左右方向の中央側に配置される2つの第1反射面22を集光パターン用反射面とし、左右方向の両側に配置される2つの第1反射面22を拡散パターン用反射面とすることができる。
第2反射面23は、回転放物面を基調とする形状を有する。第2反射面23は、当該回転放物面の焦点に一致又はほぼ一致する焦点Pを有する。焦点Pは、後述する出射面29の焦点の近傍の位置に配置される。第2反射面23は、第1反射面22からの光を焦点P側、つまり車両前方に向けて反射する。第2反射面23は、第1反射面22で反射される光の光軸に平行又は略平行な軸を有し、当該光を回転放物面の焦点P側に向けて内面反射する。
遮光部24は、第2反射面23の第2後方領域23aで内面反射される光の一部を遮光する。遮光部24は、後述の接続面27の前側端部(角部20g)に設けられる。角部20gは、車両用導光体20を外部側(下方)から見た場合に凹状である。角部20gは、左右方向に直線状又は湾曲した状態で延びている。遮光部24は、角部20gにおいて、後述する配光パターンPFのうち、ロービームパターンP1のカットオフラインCL(図8参照)を形成する。カットオフラインCLは、水平カットオフラインCLaと斜めカットオフラインCLbとを含む。角部20gは、水平カットオフラインCLaを形成するための水平部分(不図示)と、斜めカットオフラインCLbを形成するための傾斜面分(不図示)とを有する。
調整面25は、第2反射面23の前側端部、つまり第2前方領域23bの前側端部から前方に延びる。調整面25は、水平面に沿った状態で設けられる。本実施形態において、調整面25は、例えば平面状である。なお、調整面25は、平面状に限定されず、曲面状であってもよい。調整面25は、水平面に沿った構成に限定されず、前方側が水平面に対して下方に傾いた構成であってもよい。調整面25は、第2反射面23で内面反射された光の一部を、出射面29から出射されない方向、例えば後述する上面20hが配置される方向等に内面反射する。
透過面26は、調整面25の前側端部から上方に突出する。図4は、透過面26を車両用導光体20の外部から見た場合の一例を示す斜視図である。透過面26は、第2前方領域23bに対応した状態で設けられる。透過面26は、例えば平面状であり、後方から前方に向けて上方に傾いた形状を有する。透過面26は、第2前方領域23bで反射される光を導光体外部に透過して前方に向ける。
接続面27は、透過面26の上側端部と遮光部24との間を接続する。接続面27は、車両用導光体20の下側に位置し、水平面に沿って配置される。接続面27は、遮光部24から透過面26の上側端部との接続部分にかけて設けられる。このため、接続面27では、前後方向に亘って内面反射可能な領域が確保される。
再入射面28は、接続面27に対して下方に屈曲した状態で設けられる。再入射面28は、上部から下部にかけて前方に傾いた状態で形成される。再入射面28は、透過面26から外部に透過した光を再入射する。再入射面28から再入射する光は、遮光部24の下方側から出射面29に向けて進行する。
出射面29は、第2反射面23で内面反射されて遮光部24により遮光されなかった光、及び再入射面28から入射した光を出射して車両前方に配光パターンPF(図8参照)を照射する。本実施形態において、出射面29は、例えば曲面状であり、不図示の焦点と、光軸とを有する。なお、出射面29が例えば平面状であり、出射面29から出射される光を車両前方に照射する他の光学要素が配置された構成であってもよい。出射面29の焦点は、第2反射面23の焦点Pの近傍の位置に配置される。また、本実施形態では、出射面29の左右方向の幅が、第2反射面23の左右方向の幅よりも狭くてもよい。この場合、外部から見た場合の出射面29の寸法を抑制できる。
次に、上記のように構成された車両用灯具100の動作を説明する。図6及び図7は、車両用導光体20によって導光される光路の例を示す図である。なお、光路を判別しやすくするため図6と図7とに分けて記載したものであり、実際には、光源10で発せられる光は、図6に示す光路と図7に示す光路とに分離されない。車両用灯具100の光源10を点灯させることにより、発光面11から光が放射される。この光は、入射面21の第1面21a及び第2面21bから車両用導光体20に入射する。第1面21aから入射した光は、第1反射面22側に向けて進行する。第2面21bから入射した光は、第1反射面22において第2反射面23に向けて内面反射される。
図9は、本実施形態に係る車両用灯具ユニット200の一例を示す図である。図9は、車両搭載状態における前方から見た例を示している。図9に示す車両用灯具ユニット200は、ハウジング201と、アウターレンズ202と、光源10と、複数の車両用導光体20とを有する。車両用灯具ユニット200は、ハウジング201とアウターレンズ202とで囲まれる灯室内に、ここでは例えば2つの車両用導光体20が配置された構成である。なお、灯室内に配置される車両用導光体20は、1つ又は3つ以上であってもよい。また、車両用導光体20は、前方から見た場合において、左右方向に並ぶ配置に限定されず、上下方向に並ぶ配置であってもよいし、斜め方向に並ぶ配置であってもよいし、左右方向、上下方向、斜め方向の2つ以上を組み合わせた状態で並ぶ配置であってもよい。なお、異なる車両用導光体20に対して、光源10の個数及び配置が異なるように構成してもよい。
Claims (9)
- 光源からの光を入射する入射面と、
前記入射面から入射した前記光を内面反射して略平行光とする第1反射面と、
前記第1反射面で反射される前記光を前方に向けて内面反射する第2反射面と、
前記第2反射面で反射された前記光の一部を遮光する遮光部と、
前記第2反射面の前側端部から前方に延びる調整面と、
前記調整面の前側端部から上下方向の上方に延びた状態で設けられ、前記第2反射面で反射される光の一部を導光体外部に透過する透過面と、
前記透過面の上側端部と前記遮光部とを接続し、前記第2反射面で内面反射された前記光の一部を前方に向けて内面反射する接続面と、
前記透過面に対して前方かつ前記遮光部に対して下方に配置され、前記透過面から前記導光体外部に透過した前記光を再入射する再入射面と、
前記第2反射面で内面反射されて前記遮光部又は前記遮光部の上方を通過する前記光と前記再入射面から入射した前記光とを出射する出射面と
を備える車両用導光体。 - 前記透過面に配置され、前記第2反射面で反射される光の一部を上方に内面反射する第1グレア抑制面を更に備える
請求項1に記載の車両用導光体。 - 前記透過面は、前記第1グレア抑制面により分割されて複数個所に配置される
請求項2に記載の車両用導光体。 - 前記再入射面に配置され、前記透過面から前記導光体外部に透過した前記光の一部を下方に反射する第2グレア抑制面を更に備える
請求項1に記載の車両用導光体。 - 前記再入射面は、段部により分割されて複数個所に配置される
請求項1に記載の車両用導光体。 - 前記出射面は、車両前方に配光パターンを照射する
請求項1に記載の車両用導光体。 - 前記配光パターンは、前記第2反射面で内面反射され、前記接続面の上方を通過し、前記遮光部又は前記遮光部の上方を通過して前記出射面から出射された前記光により形成される第1パターンと、前記第2反射面で内面反射され、前記接続面により内面反射され、前記遮光部又は前記遮光部の上方を通過して前記出射面から出射された前記光により形成される第2パターンとが車両前方で重なったメインパターンを含む
請求項6に記載の車両用導光体。 - 前記第1パターン及び前記第2パターンは、互いに重なるカットオフラインを上端部に有し、
前記第2パターンは、前記第1パターンよりも、下端部が前記カットオフラインに近い
請求項7に記載の車両用導光体。 - 光源を備え、
前記光源からの光を導光して出射する、請求項1に記載の車両用導光体を複数備える
車両用灯具ユニット。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP22867332.3A EP4400763A1 (en) | 2021-09-08 | 2022-09-05 | Vehicle light-guiding body and vehicle lighting unit |
CN202280060987.9A CN117916515A (zh) | 2021-09-08 | 2022-09-05 | 车辆用导光体以及车辆用灯具单元 |
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JP2021146203A JP2023039170A (ja) | 2021-09-08 | 2021-09-08 | 車両用導光体及び車両用灯具ユニット |
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JP6130602B2 (ja) | 2014-07-08 | 2017-05-17 | 三菱電機株式会社 | 前照灯モジュール及び前照灯装置 |
JP2017084556A (ja) * | 2015-10-27 | 2017-05-18 | スタンレー電気株式会社 | レンズ体、レンズ結合体及び車両用灯具 |
JP2021086724A (ja) * | 2019-11-27 | 2021-06-03 | 市光工業株式会社 | 車両用導光体及び車両用灯具ユニット |
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JP6130602B2 (ja) | 2014-07-08 | 2017-05-17 | 三菱電機株式会社 | 前照灯モジュール及び前照灯装置 |
JP2017084556A (ja) * | 2015-10-27 | 2017-05-18 | スタンレー電気株式会社 | レンズ体、レンズ結合体及び車両用灯具 |
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