WO2018074242A1 - 車両用灯具 - Google Patents
車両用灯具 Download PDFInfo
- Publication number
- WO2018074242A1 WO2018074242A1 PCT/JP2017/036231 JP2017036231W WO2018074242A1 WO 2018074242 A1 WO2018074242 A1 WO 2018074242A1 JP 2017036231 W JP2017036231 W JP 2017036231W WO 2018074242 A1 WO2018074242 A1 WO 2018074242A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light
- rod
- plate
- light source
- shaped portion
- Prior art date
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Classifications
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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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/241—Light guides characterised by the shape of the light guide of complex shape
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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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
- B60Q1/38—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps
- B60Q1/381—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps with several light sources activated in sequence, e.g. to create a sweep effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
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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
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
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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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
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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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
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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
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
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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
- F21S43/235—Light guides
- F21S43/249—Light guides with two or more light sources being coupled into the light guide
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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
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
Definitions
- the present invention relates to a vehicular lamp, and more particularly to a vehicular lamp used in a vehicle such as an automobile.
- Patent Document 1 discloses a vehicular lamp having a structure in which light is incident on a plate-shaped light guide from a side surface and emitted from the main surface outside the lamp to the front of the lamp.
- a reflecting element such as a step provided on the main surface inside the lamp of the light guide.
- the present invention has been made in view of such circumstances, and an object thereof is to provide a technique for improving the uniformity of light emission on the surface of a light guide.
- an aspect of the present invention is a vehicle lamp.
- the vehicular lamp includes a first light source and a light guide having a rod-like portion and a plate-like portion.
- the light guide has a structure in which the peripheral surface of the rod-shaped portion is connected to the side surface of the plate-shaped portion.
- a plate-shaped part contains a light-diffusion material inside.
- the light of the first light source enters the rod-shaped portion from one end of the rod-shaped portion, enters the plate-shaped portion from the peripheral surface of the rod-shaped portion, and is emitted from the main surface of the plate-shaped portion by the light diffusing material. According to this aspect, the uniformity of light emission on the surface of the light guide can be improved.
- the rod-like portion and the plate-like portion may be an integrally molded product.
- the light which leaks from a surrounding surface in the process which advances the inside of a rod-shaped part may reflect inside from the one end part of a rod-shaped part toward the other end part, and may approach into a plate-shaped part.
- the vehicular lamp further includes a second light source, and the light guide has a side branch portion for causing the light of the second light source to enter the rod-shaped portion from the circumferential surface of the rod-shaped portion.
- the light from the second light source enters the side branch from the end of the side branch, enters the bar from the side branch via the peripheral surface of the bar, and enters the plate from the peripheral surface of the bar.
- the light diffusing material may be emitted from the main surface of the plate-like portion.
- the ratio of the diameter of the rod-shaped portion to the thickness of the plate-shaped portion is a predetermined first.
- the part may be different from the second part farther from the first light source than the first part.
- the uniformity of light emission on the surface of the light guide can be improved.
- FIG. 1 is a front view of a vehicular lamp according to a first embodiment.
- 1 is a front view showing an internal structure of a vehicular lamp according to a first embodiment.
- FIG. 3A is a cross-sectional view taken along line AA in FIG.
- FIG. 3B is a cross-sectional view along the line BB in FIG. It is a front view of the light source and light guide with which the vehicle lamp which concerns on Embodiment 1 is provided.
- FIG. 5A and FIG. 5B are schematic diagrams for explaining a method for measuring the light emission efficiency of the plate-like portion.
- 6A, 6B, and 6C are diagrams for explaining sequential light emission in the vehicular lamp according to the first embodiment. 6 is a front view of a vehicular lamp according to a second embodiment.
- FIG. 8A is a front view of a light source and a light guide provided in the vehicular lamp according to the third embodiment.
- FIG. 8B is a cross-sectional view taken along the line CC in FIG.
- FIG. 8C is a cross-sectional view taken along the line DD in FIG.
- FIG. 9A is a front view schematically showing a light source and a light guide provided in the vehicular lamp according to the fourth embodiment.
- FIG. 9B is a front view schematically showing the light guide body in a state where one of the first light sources is turned on.
- FIG. 9C is a front view schematically showing the light guide body with the other first light source turned on.
- FIG. 10A is a front view schematically showing a light source and a light guide provided in the vehicular lamp according to the fifth embodiment.
- FIG. 10B is a cross-sectional view along the line EE in FIG.
- FIG. 10C is a front view schematically showing the light guide body in a state where one of the first light sources is turned on.
- FIG. 10D is a cross-sectional view taken along the line FF in FIG.
- FIG. 10E is a front view schematically showing the light guide body in a state where the other first light source is turned on.
- FIG. 10F is a cross-sectional view taken along the line GG in FIG.
- FIG. 1 is a front view of the vehicular lamp according to the first embodiment.
- FIG. 2 is a front view showing the internal structure of the vehicular lamp according to the first embodiment.
- FIG. 3A is a cross-sectional view taken along line AA in FIG.
- FIG. 3B is a cross-sectional view along the line BB in FIG.
- FIG. 4 is a front view of a light source and a light guide provided in the vehicular lamp according to the first embodiment.
- FIG. 2 illustrates the vehicular lamp 100 with the outer cover 104 and the shielding member 114 removed.
- the vehicle lamp 100 is a rear combination lamp disposed, for example, at the rear of the vehicle.
- the vehicular lamp 100 includes a lamp body 102 having an opening, and a translucent outer cover 104 that covers the opening of the lamp body 102.
- a first light source 108, a second light source 110, a light guide body 112, and a shielding member 114 are accommodated in a lamp chamber 106 formed by the lamp body 102 and the outer cover 104.
- the first light source 108, the second light source 110, the light guide 112, and the shielding member 114 are fixed to the lamp body 102, respectively.
- the first light source 108 and the second light source 110 are, for example, LEDs (light emitting diodes).
- Each light source may be another semiconductor light emitting element such as LD (laser diode), organic or inorganic EL (electroluminescence), incandescent bulb, halogen lamp, discharge bulb or the like.
- the light guide 112 is a resin member having translucency.
- the resin used for the light guide 112 include a transparent thermoplastic resin or a thermosetting resin such as a polycarbonate resin or an acrylic resin.
- the light guide 112 has a rod-like portion 116 and a plate-like portion 118.
- the rod-shaped portion 116 is a long portion extending in any one direction.
- the rod-shaped portion 116 of the present embodiment is a columnar shape and extends in the vehicle width direction.
- the rod-shaped portion 116 connects one end portion 116a (or end surface) positioned on the outer side in the vehicle width direction, the other end portion 116b (or end surface) positioned on the inner side in the vehicle width direction, and the two end portions 116a and 116b. And a peripheral surface 116c.
- the plate-like portion 118 has two main surfaces 118a and 118b facing each other.
- the main surface 118a is located on the front side of the lamp, and the main surface 118b is located on the rear side of the lamp.
- the plate-like portion 118 has a plurality of side surfaces that connect the two main surfaces 118a and 118b.
- the plate-like portion 118 of the present embodiment has a substantially rectangular shape that is long in the extending direction of the rod-like portion 116, and has four side surfaces 118c, 118d, 118e, and 118f.
- the side surface 118c and the side surface 118d extend in the extending direction of the rod-shaped portion 116, that is, in the vehicle width direction. Further, the side surface 118c is positioned below the side surface 118d in the vertical direction. The side surface 118c extends in parallel to the extending direction of the rod-like portion 116. The side surface 118d is curved so as to gradually approach the side surface 118c from the outer side in the vehicle width direction toward the inner side in the vehicle width direction. The side surface 118e and the side surface 118f extend in a direction substantially orthogonal to the extending direction of the rod-like portion 116.
- the side surface 118e connects the end portions of the side surface 118c and the side surface 118d on the outer side in the vehicle width direction
- the side surface 118f connects the end portions of the side surface 118c and the side surface 118d on the inner side in the vehicle width direction.
- the plate-like portion 118 contains the light diffusing material 119 inside.
- the light diffusing material 119 include metal oxide particles such as titanium dioxide particles.
- the average particle diameter of the titanium dioxide particles is, for example, 150 to 500 nm, preferably 160 to 450 nm, more preferably 170 to 450 nm, still more preferably 200 to 400 nm, and particularly preferably 220 to 400 nm.
- the content of the light diffusing material 119 is, for example, 0.1 to 100 ppm by mass, preferably 0.1 to 50 ppm by mass, and more preferably 0.1 to 10 ppm by mass with respect to the total mass of the plate-like portion 118. .
- the titanium dioxide particles have a rutile transformation ratio of, for example, 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, and further preferably 90% by mass or more.
- the plate-shaped portion 118 includes other monomers copolymerizable with the main monomers of the resin used, antistatic agents, antioxidants, mold release agents, flame retardants, lubricants, fluidity improvers, fillers, light General additives such as stabilizers may be contained.
- the plate-like portion 118 has a haze value of at least a part in the plate thickness direction of more than 7% and 30% or less when measured with a plate thickness of 4 mm.
- the bar-shaped part 116 has a haze value of 7% or less when measured under the same conditions.
- the plate-like portion 118 has a visible light transmittance of 60% or more and 92% or less in at least a portion when measured with a plate thickness of 4 mm.
- the transmittance is defined as the ratio of the amount of light emitted from the main surface 118a in all directions to the amount of light incident on the plate-like portion 118 from the main surface 118b in the normal direction of the main surface 118b.
- the haze values of the plate-like portion 118 and the rod-like portion 116 can be measured according to JIS K7136 using a haze meter HZ-2 (manufactured by Suga Test Instruments Co., Ltd.).
- the visible light transmittance of the plate-like portion 118 can be measured according to JIS K7361-1 using a haze meter HZ-2 (manufactured by Suga Test Instruments Co., Ltd.).
- FIG. 5A and FIG. 5B are schematic diagrams for explaining a method for measuring the light emission efficiency of the plate-like portion.
- FIG. 5A shows the dimensions of the plate-like portion 118 and the LED arrangement.
- FIG. 5B shows a state in which the plate-like portion 118 to which the fixed frame B is attached is viewed from the light emission surface C side.
- a rectangular parallelepiped plate-like portion 118 having a vertical length of 100 mm, a horizontal length of 190 mm, and a thickness of 3.2 mm is prepared.
- a side surface A of the plate-like portion 118 is used as an incident surface for light source light.
- LEDs are arranged in the normal direction of the side surface A. The LEDs are arranged so that the focal point P faces the side surface A and the distance from the focal point P to the side surface A is 1.85 mm. From the light emitting surface of the LED, light diffuses within a range of 180 °.
- the periphery of the prepared plate-like portion 118 is covered with a fixed frame B.
- the light emitting surface C of the plate-like portion 118 has a vertical length of 90 mm and a horizontal length of 160 mm.
- the fixed frame B does not reflect light on both the front surface and the back surface.
- a light receiving surface (not shown) is disposed at a distance of ⁇ 10 from the light emitting surface C in the normal direction of the light emitting surface C.
- the light flux irradiated to the rectangular area of 15 ° vertically and 25 ° horizontally on the light receiving surface is measured with the intersection of the normal passing through the center of the light emitting surface C and the light receiving surface as the center.
- the luminous flux of light irradiated on the rectangular region is 0.3% or more when the luminous flux of light emitted from the LED is 1.
- the plate-like portion 118 has the following optical characteristics. That is, when light is incident from the side surfaces 118c to 118f, the amount of emitted light per unit area from the main surface 118a is from the side surface (for example, the side surface 118d) facing away from the side surface (for example, the side surface 118c) on which the light is incident. More than the amount of emitted light per unit area. When light is incident from main surface 118b, the amount of light emitted per unit area from main surface 118a is greater than the amount of light emitted per unit area from side surfaces 118c to 118f.
- the plate-like portion 118 has a ratio of light emitted from the main surface 118a regardless of whether light is incident from the side surfaces 118c to 118f or light is incident from the main surface 118b. It is higher than the ratio of light emitted from the side surfaces 118c to 118f.
- the light guide 112 has a structure in which the peripheral surface 116 c of the rod-shaped portion 116 is connected to the side surface 118 c of the plate-shaped portion 118. That is, the rod-shaped portion 116 is located below the plate-shaped portion 118 in the vertical direction. A portion of the peripheral surface 116 c of the rod-shaped portion 116 that faces upward in the vertical direction is in contact with the side surface 118 c of the plate-shaped portion 118. The diameter of the rod-shaped portion 116 is larger than the thickness of the plate-shaped portion 118 (the length of the side surface 118c in the direction in which the two main surfaces 118a and 118b are arranged).
- the rod-like portion 116 and the plate-like portion 118 are integrally formed products.
- the integrally molded product can be manufactured by a conventionally known two-color molding or the like using a resin material in which the light diffusing material 119 is not mixed and a resin material in which the light diffusing material 119 is mixed.
- the rod-shaped portion 116 is formed of a resin material in which the light diffusing material 119 is not mixed
- the plate-shaped portion 118 is formed of a resin material in which the light diffusing material 119 is mixed.
- the first light source 108 is disposed such that the light exit surface faces one end 116a of the rod-shaped portion 116.
- the light emitted from the first light source 108 enters the rod-shaped portion 116 from one end portion 116 a of the rod-shaped portion 116.
- the light that has entered the rod-shaped portion 116 enters the plate-shaped portion 118 from the peripheral surface 116 c of the rod-shaped portion 116. More specifically, the light from the first light source 108 travels through the rod-shaped portion 116 while being internally reflected from one end portion 116a of the rod-shaped portion 116 toward the other end portion 116b.
- the rod-shaped portion 116 and the plate-shaped portion 118 are integrally formed products.
- the light of the first light source 108 is a peripheral surface in a region where the peripheral surface 116c of the rod-shaped portion 116 and the side surface 118c of the plate-shaped portion 118 abut in the process of traveling from one end portion 116a to the other end portion 116b. It leaks from 116 c to the plate-like portion 118 side and enters the plate-like portion 118.
- the light entering the plate-like portion 118 from the side surface 118c is directed to the main surface 118a by the light diffusing material 119 dispersed inside the plate-like portion 118. And it is radiate
- the light guide 112 has a side branch 120.
- the side branch portion 120 is a portion for allowing the light from the second light source 110 to enter the rod-shaped portion 116 from the peripheral surface 116 c of the rod-shaped portion 116.
- the side branch part 120 is rod-shaped and extends in a direction intersecting with the extending direction of the bar-shaped part 116.
- One end portion 120 a is connected to the peripheral surface 116 c of the rod-shaped portion 116. For example, the end portion 120a abuts on a region facing away from a region of the peripheral surface 116c that abuts on the side surface 118c, that is, a region facing downward in the vertical direction.
- the side branch portion 120 is connected to the peripheral surface 116 c between the two end portions 116 a and 116 b of the rod-like portion 116.
- the side branch portion 120 is connected to the peripheral surface 116 c between the end portion 116 b opposite to the first light source 108 and the intermediate position of the rod-like portion 116. In the present embodiment, it is connected to the peripheral surface 116c at an intermediate position.
- a plurality of side branch portions 120 may be connected to the rod-shaped portion 116. In this case, preferably, at least one side branch 120 is disposed between the end 116 b and the intermediate position of the rod-shaped part 116.
- the side branch portion 120 is inclined with respect to the rod-shaped portion 116 so as to be separated from the rod-shaped portion 116 as it goes from one end portion 120a to the other end portion 120b.
- One end 120a is located on the inner side in the vehicle width direction than the other end 120b. Therefore, the side branch portion 120 is a portion that branches from the rod-shaped portion 116 toward the outside in the vehicle width direction and downward in the vertical direction. Further, in the present embodiment, the side branch portion 120 is an integrally molded product with the rod-like portion 116 and the plate-like portion 118.
- the second light source 110 is disposed such that the light exit surface faces the other end 120b of the side branch 120.
- the light from the second light source 110 enters the side branch 120 from the other end 120 b of the side branch 120.
- the light incident on the side branch part 120 travels in the side branch part 120 while being internally reflected from the other end part 120b toward the one end part 120a.
- the light that has reached one end 120 a enters the rod-shaped portion 116 from the side branch portion 120 via the peripheral surface 116 c of the rod-shaped portion 116.
- the light that has entered the rod-shaped portion 116 travels through the rod-shaped portion 116 while being internally reflected toward the other end 116b of the rod-shaped portion 116.
- the plate-like portion 118 leaks from the peripheral surface 116 c of the rod-like portion 116 and enters the plate-like portion 118.
- the light entering the plate-like portion 118 from the side surface 118c is directed to the main surface 118a by the light diffusing material 119 dispersed inside the plate-like portion 118. And it is radiate
- the light of the second light source 110 travels inward in the vehicle width direction through the rod-shaped portion 116 from the connecting portion between the side branch portion 120 and the rod-shaped portion 116. Therefore, when the second light source 110 is turned on, a region on the inner side in the vehicle width direction from the connection portion between the side branch portion 120 and the rod-like portion 116 of the main surface 118a of the plate-like portion 118 emits surface light.
- the luminance in a region away from the first light source 108 on the main surface 118a may be lower than the luminance in a region near the first light source 108.
- the brightness of the region away from the first light source 108 can be increased by causing the light of the second light source 110 to enter from the middle of the rod-shaped portion 116 via the side branch portion 120.
- uniform surface light emission of the entire main surface 118a can be realized.
- the vehicular lamp 100 can exhibit a first lamp function when the first light source 108 is turned on, and can exhibit a second lamp function when the second light source 110 is turned on. Alternatively, the vehicular lamp 100 may exhibit one lamp function when both the first light source 108 and the second light source 110 are turned on.
- the first and second lamp functions include a stop lamp, a tail lamp, a turn signal lamp, a clearance lamp, and a daytime running lamp.
- FIGS. 6A to 6C are diagrams for explaining sequential light emission in the vehicular lamp according to the first embodiment.
- the light guide illustrated in FIGS. 6A to 6C includes two combinations of the side branch 120 and the second light source 110.
- the first set of side branch portions 120x and the second light source 110x are provided at an intermediate position in the vehicle width direction, and the second set of side branch portions 120y and the second light source 110y are provided on the inner side in the vehicle width direction than the first set. .
- the entire plate-shaped portion 118 emits light.
- the second light source 110x when the second light source 110x is turned on, an area located on the inner side in the vehicle width direction from the side branch 120x in the plate-like portion 118 emits light.
- FIG. 6C when the second light source 110y is turned on, an area located on the inner side in the vehicle width direction from the side branch 120y in the plate-like portion 118 emits light.
- the vehicular lamp 100 takes a first state in which the second light source 110y is turned on, the second light source 110x and the first light source 108 are turned off, and a part of the plate-like portion 118 emits light (FIG. 6C). ). Subsequently, the vehicular lamp 100 is in a second state in which the second light source 110x is turned on, the first light source 108 is turned off, and a part of the plate-like portion 118 that emits light in a wider range than the first state. (FIG. 6B). Subsequently, the vehicular lamp 100 takes a third state in which the first light source 108 is turned on so that the entire plate-like portion 118 emits light (FIG. 6A). Sequential light emission can be realized by repeating the first state to the third state in this order.
- the second light source 110y may be either lit / not lit.
- the second light sources 110x and 110y may be either on / off.
- By turning on these light sources more uniform surface light emission can be realized in the second and third states. Further, by turning off these light sources, power consumption in the second and third states can be reduced. Further, by further increasing the combinations of the side branch portions 120 and the second light sources 110 and arranging them in the vehicle width direction, smoother sequential light emission can be realized.
- the vehicle lamp 100 includes a shielding member 114.
- the shielding member 114 is a long plate-like member extending in the vehicle width direction.
- the shielding member 114 has a frame shape, and extends to the front side of the lamp of the first light source 108, the second light source 110, the rod-like portion 116, and the side branch portion 120.
- the shielding member 114 also extends to the front side of the lamp at the peripheral edge of the plate-like portion 118.
- the plate-like portion 118 has high transparency. Further, the plate-like portion 118 is transparent, and light incident from the side surface 118c can be uniformly emitted from the main surface 118a. That is, when the first light source 108 and the second light source 110 are not turned on, the plate-like portion 118 looks transparent. On the other hand, when the first light source 108 is turned on, the entire main surface 118a appears to emit light uniformly. Further, when the second light source 110 is turned on, a part of the main surface 118a appears to emit light uniformly.
- a reflection element such as a metal film, a step, or a dome shape is provided on the end portion 116b of the rod-shaped portion 116.
- a reflection element such as a metal film, a step, or a dome shape is provided on the end portion 116b of the rod-shaped portion 116.
- attained the edge part 116b can be returned to the edge part 116a side.
- the amount of light emitted from the plate-like portion 118 can be increased.
- the vehicular lamp 100 includes the first light source 108 and the light guide 112.
- the light guide body 112 has a rod-shaped portion 116 and a plate-shaped portion 118, and has a structure in which a peripheral surface 116 c of the rod-shaped portion 116 is connected to a side surface 118 c of the plate-shaped portion 118.
- the plate-shaped part 118 contains the light-diffusion material 119 inside.
- the light from the first light source 108 enters the rod-shaped portion 116 from one end portion 116 a of the rod-shaped portion 116, enters the plate-shaped portion 118 from the peripheral surface 116 c, and the main surface 118 a of the plate-shaped portion 118 by the light diffusing material 119. It is emitted from.
- the light guide 112 is more uniformly compared to a light guide that reflects light incident from the side surface by a reflecting element such as a step provided on the main surface inside the lamp and emits it from the main surface outside the lamp.
- the surface portion 118 can emit light.
- the uniformity of light emission on the surface of the light guide can be improved, a pedestrian, a driver of another vehicle, and the like can more reliably visually recognize the light emission of the vehicle lamp 100. Therefore, the visibility of the vehicular lamp 100 can be improved. Further, the design and appearance of the vehicular lamp 100 can be improved.
- the main surface 118 a of the plate-like portion 118 emits light by the light diffusing material 119. For this reason, optical control such as adjusting the angle of the reflecting surface, which is necessary when using a reflecting element such as a step, is unnecessary. Therefore, the light guide 112 can be more easily formed, and the manufacturing cost can be reduced. Further, the rod-shaped portion 116 and the plate-shaped portion 118 are integrally formed products. Thereby, the light guide efficiency from the rod-shaped part 116 to the plate-shaped part 118 can be improved. Further, the number of parts and the manufacturing cost of the vehicular lamp 100 can be reduced.
- the light from the first light source 108 travels through the rod-shaped portion 116 while being internally reflected from the end portion 116a side to the end portion 116b side of the rod-shaped portion 116, and leaks from the peripheral surface 116c to the side surface 118c side in the process. Enters the plate-like portion 118. Therefore, the light from the first light source 108 gradually enters the plate-like portion 118 side in the process of traveling through the rod-like portion 116. Thereby, the plate-shaped part 118 can be surface-emitted more uniformly.
- the plate-like portion 118 can efficiently emit the light incident from the side surface 118c from the main surface 118a. For this reason, the 1st light source 108 and the rod-shaped part 116 can be arrange
- the vehicle lamp 100 includes a second light source 110.
- the light guide 112 has the side branch part 120 for making the light of the 2nd light source 110 inject into the rod-shaped part 116 from the surrounding surface 116c.
- the light of the second light source 110 enters the side branch 120 from the end 120b of the side branch 120, and enters the rod 116 from the side branch 120 via the peripheral surface 116c of the rod 116.
- the light of the second light source 110 that has entered the rod-like portion 116 enters the plate-like portion 118 from the peripheral surface 116 c and is emitted from the main surface 118 a by the light diffusing material 119, similarly to the light of the first light source 108.
- the amount of incident light on a specific region of the plate-like portion 118 can be increased, so that the plate-like portion 118 can emit light more uniformly.
- the second light source 110 and the side branch portion 120 can also be arranged on the same plane as the plate-like portion 118.
- the vehicular lamp according to the second embodiment has the same configuration as that of the vehicular lamp 100 according to the first embodiment except that the rod-shaped portion 116 can be visually recognized from the outside of the lamp.
- the vehicular lamp according to the second embodiment will be described mainly with respect to the configuration different from that of the first embodiment, and the common configuration will be described briefly or the description will be omitted.
- FIG. 7 is a front view of the vehicular lamp according to the second embodiment.
- the shielding member 214 provided in the vehicular lamp 200 according to the present embodiment has a frame shape and extends to the front side of the lamp at the peripheral edge of the first light source 108, the end portions 116 a and 116 b of the rod-shaped portion 116 and the plate-shaped portion 118. Exists.
- the shielding member 214 conceals the first light source 108, the end portions 116a and 116b of the rod-shaped portion 116, and the peripheral portion of the plate-shaped portion 118 from the outside of the lamp.
- the region excluding the end portions 116a and 116b of the rod-shaped portion 116 and the main surface of the plate-shaped portion 118 are exposed. Therefore, the rod-like portion 116 and the plate-like portion 118 can be visually recognized from the outside of the lamp. Thereby, a new appearance can be imparted to the vehicular lamp 200.
- the side branch 120 and the second light source 110 are not provided.
- the side branch part 120 and the second light source 110 are provided, when the second light source 110 is turned on, a state where the connection region of the side branch part 120 of the rod-like part 116 shines stronger than the other areas, so-called spotlight may occur.
- the rod-shaped portion 116 can also be visually recognized from the outside, the flashing of the rod-shaped portion 116 is also visually recognized. For this reason, it is preferable that the side branch 120 and the second light source 110 are not provided.
- the rod-shaped portion 116 may have a structure in which light is irradiated from the peripheral surface 116c to the front of the lamp. That is, in addition to the plate-like portion 118, the rod-like portion 116 may be a light emitting portion. For example, a reflective element such as a step is provided in an area facing the lamp rear side on the peripheral surface 116c.
- the light emitted from the first light source 108 (and the light from the second light source 110 when the second light source 110 is provided) is the rod-shaped portion 116 from the end portion 116a side of the rod-shaped portion 116 toward the end portion 116b side.
- part of the light leaks from the peripheral surface 116 c to the side surface 118 c and enters the plate-like portion 118. Further, the other part of the light is reflected toward the front of the lamp by the reflecting element provided on the peripheral surface 116c. This light is emitted from the peripheral surface 116c toward the front of the lamp. Thereby, the visibility of the vehicular lamp 200 can be improved. In addition, a new appearance can be given to the vehicular lamp 200.
- the vehicular lamp according to the third embodiment has the same configuration as that of the vehicular lamp 100 according to the first embodiment except for the shape of the light guide.
- the vehicular lamp according to the third embodiment will be described mainly with respect to the configuration different from the first embodiment, and the common configuration will be described briefly or the description will be omitted.
- FIG. 8A is a front view of a light source and a light guide provided in the vehicular lamp according to the third embodiment.
- FIG. 8B is a cross-sectional view taken along the line CC in FIG.
- FIG. 8C is a cross-sectional view taken along the line DD in FIG.
- the cross section taken along the line CC and the cross section taken along the line DD correspond to cross sections orthogonal to the extending direction of the rod-shaped portion 116, respectively.
- the CC line is located at the first part 312a, and the DD line is located at the second part 312b.
- the light guide 312 included in the vehicular lamp according to the present embodiment has a diameter A1 of the rod-shaped portion 116 and a thickness A2 of the plate-shaped portion 318 when viewed in a cross section orthogonal to the extending direction of the rod-shaped portion 116.
- the ratio (A1 / A2) differs between the predetermined first part 312a and the second part 312b farther from the first light source 108 than the first part 312a.
- the ratio (A1 / A2) correlates with the size of the region that contacts the side surface 318c in the entire peripheral surface 116c of the rod-shaped portion 116 (both the region that contacts the side surface 318c of the plate-shaped portion 318 and the region that does not contact). .
- the ratio is large, the region that contacts the side surface 318c on the peripheral surface 116c is small, and when the ratio is small, the region that contacts the side surface 318c on the peripheral surface 116c is large.
- the light in the rod-shaped portion 116 travels while reflecting on the inner surface 116c. At this time, the light that has reached the region in contact with the side surface 318c enters the plate-like portion 318 without being internally reflected.
- the ratio (A1 / A2) is smaller, that is, when the region in contact with the side surface 318c is larger, more light in the rod-shaped portion 116 enters the plate-shaped portion 318.
- the ratio (A1 / A2) is larger, that is, when the region in contact with the side surface 318c is smaller, the light in the rod-shaped portion 116 tends to stay in the rod-shaped portion 116. Therefore, by changing the ratio (A1 / A2) between the first part 312a and the second part 312b having different distances from the first light source 108, the amount of incident light from the rod-like part 116 to the plate-like part 318 can be made different. Can do. Thereby, the light emission amount in each of the regions having different distances from the first light source 108 in the plate-like portion 318 can be adjusted.
- the rod-shaped portion 116 has the same diameter A1 from the outside in the vehicle width direction to the inside.
- the plate-like portion 318 has a shape in which the thickness A2 gradually increases from the outside in the vehicle width direction toward the inside. Therefore, as shown in FIGS. 8B and 8C, the diameter A1 of the rod-shaped portion 116 is the same in the first portion 312a and the second portion 312b.
- the thickness A2 of the plate-like portion 318 is thicker in the second part 312b than in the first part 312a. Accordingly, the ratio (A1 / A2) is smaller in the second part 312b far from the first light source 108 than in the first part 312a close to the first light source 108. Therefore, in the present embodiment, the light in the rod-like portion 116 is likely to enter the plate-like portion 318 in the second portion b compared to the first portion 312a.
- the first part 312a closer to the first light source 108 more light exists in the rod-like portion 116 than in the second part 312b far from the first light source 108. Therefore, with the above-described configuration, in the first part 312a, it is possible to suppress the entry of light from the rod-like part 116 to the plate-like part 318, and to secure the amount of light traveling toward the second part 312b.
- the second portion 312b most of the light remaining in the rod-shaped portion 116 can enter the plate-shaped portion 318. That is, the amount of light entering the plate-like portion 318 from the rod-like portion 116 can be made uniform between the first portion 312a and the second portion 312b. Thereby, the plate-shaped part 318 can be surface-emitted more uniformly.
- the ratio (A1 / A2) is changed by changing the thickness A2 of the plate-like portion 318.
- the ratio (A1 / A2) may be changed by changing both thicknesses A2.
- the vehicular lamp according to the fourth embodiment is common to the configuration of the vehicular lamp 100 according to the first embodiment except that the vehicular lamp includes two first light sources and two rod-like portions.
- the vehicular lamp according to the fourth embodiment will be described mainly with respect to the configuration different from the first embodiment, and the common configuration will be described briefly or the description will be omitted.
- FIG. 9A is a front view schematically showing a light source and a light guide provided in the vehicular lamp according to the fourth embodiment.
- FIG. 9B is a front view schematically showing the light guide body in a state where one of the first light sources is turned on.
- FIG. 9C is a front view schematically showing the light guide body with the other first light source turned on.
- one first light source is referred to as a third light source, and the other first light source is simply referred to as a first light source.
- the light guide 412 provided in the vehicular lamp according to the present embodiment includes two rod-like portions 116.
- the vehicular lamp includes a first light source 108 and a third light source 122.
- One rod-like portion 116 d is connected to the side surface 118 c of the plate-like portion 118.
- the other rod-shaped portion 116e is connected to a side surface 118d facing away from the side surface 118c.
- the first light source 108 is disposed at the end of the rod-shaped portion 116d.
- the third light source 122 is disposed at the end of the rod-shaped portion 116e.
- the first lamp function is exhibited.
- FIG. 9C when the first light source 108 is turned on and light is emitted from the plate-like portion 118, the second lamp function is exhibited.
- different lamp functions can be exhibited in the same light emitting region.
- the first and second lamp functions are as described in the first embodiment.
- one of the first light source 108 and the third light source 122 is a white light source, and the other is an amber color light source.
- the daytime running lamp function is exhibited as one of the first and second lamp functions, and the turn signal lamp function is exhibited as the other function.
- the first lamp function may be exhibited by lighting only one of the first light source 108 and the third light source 122, and the second lamp function may be exhibited by lighting both.
- the first light source 108 and the third light source 122 are red light sources.
- the tail lamp function is exhibited as the first lamp function
- the stop lamp function is exhibited as the second lamp function.
- the first light source 108 and the third light source 122 are white light sources.
- a clearance lamp function is exhibited as the first lamp function when the first light source 108 or the third light source 122 is turned on, and a daytime running lamp function is provided as the second lamp function when the first light source 108 and the third light source 122 are turned on. Is demonstrated.
- the side branch part 120 may be connected to the rod-like parts 116d and 116e.
- a third lamp function can be added in addition to the first and second lamp functions described above.
- the third lamp function include a clearance lamp function and a turn signal lamp function with respect to a configuration in which a tail lamp function and a stop lamp function are exhibited as the first and second lamp functions.
- a combination of the first to third lamp functions can be set as appropriate.
- the vehicular lamp according to the fifth embodiment has the same configuration as that of the vehicular lamp according to the fourth embodiment except for the shape of the plate-like portion.
- the vehicular lamp according to the fifth embodiment will be described mainly with respect to the configuration different from the first and fourth embodiments, and the common configuration will be described briefly or the description will be omitted.
- FIG. 10 (A) is a front view schematically showing a light source and a light guide provided in the vehicular lamp according to the fifth embodiment.
- FIG. 10B is a cross-sectional view along the line EE in FIG.
- FIG. 10C is a front view schematically showing the light guide body in a state where one of the first light sources is turned on.
- FIG. 10D is a cross-sectional view taken along the line FF in FIG.
- FIG. 10E is a front view schematically showing the light guide body in a state where the other first light source is turned on.
- FIG. 10F is a cross-sectional view taken along the line GG in FIG.
- one first light source is referred to as a third light source, and the other first light source is simply referred to as a first light source.
- the light guide 512 provided in the vehicular lamp according to the present embodiment includes two rod-like portions 116.
- the vehicular lamp includes a first light source 108 and a third light source 122.
- One rod-like portion 116 d is connected to the side surface 518 c of the plate-like portion 518.
- the other rod-shaped portion 116e is connected to a side surface 518d facing away from the side surface 518c.
- the first light source 108 is disposed at the end of the rod-shaped portion 116d.
- the third light source 122 is disposed at the end of the rod-shaped portion 116e.
- the plate-like portion 518 has a refracting portion 518e between the side surface 518c and the side surface 518d.
- the refracting portion 518e is a portion where a first region 518f extending vertically upward from the side surface 518c and forward of the lamp is connected to a second region 518g extending vertically downward from the side surface 518d and forward of the lamp. Therefore, the refracting portion 518e has a V-shape projecting forward of the lamp.
- the light emitted from the first light source 108 enters the first region 518f from the rod-shaped portion 116d, but the refracting portion 518e inhibits the progression to the second region 518g.
- the light emitted from the third light source 122 enters the second region 518g from the rod-shaped portion 116e, but is prevented from proceeding to the first region 518f by the refracting portion 518e.
- the inclination angle of the first region 518f with respect to the horizontal plane and the inclination angle of the second region 518g with respect to the horizontal plane are each preferably 45 ° or less.
- the light emitting area of the light guide 512 can be made different for each lamp function.
- the first and second lamp functions are as described in the first and fourth embodiments. That is, for example, one of the first light source 108 and the third light source 122 is a white light source, and the other is an amber color light source, and exhibits a daytime running lamp function and a turn signal lamp function. Further, for example, the tail lamp function is exhibited by turning on the first light source 108 or the third light source 122, and the stop lamp function is exhibited by turning on the first light source 108 and the third light source 122. Alternatively, the clearance lamp function is exhibited by turning on the first light source 108 or the third light source 122, and the daytime running lamp function is exhibited by turning on the first light source 108 and the third light source 122.
- the side branch part 120 may be connected to the rod-like parts 116d and 116e.
- a third lamp function can be added in addition to the first and second lamp functions described above.
- a combination of the first to third lamp functions can be set as appropriate.
- the vehicle lamp in each embodiment may be a headlamp.
- the plate-like portion may have a shape other than a quadrangle such as a disk shape.
- the light from the first light source and the second light source may be reflected by the reflector and enter the rod-like portion or the side branch portion.
- the rod-shaped portion may be positioned above the plate-shaped portion in the vertical direction.
- the rod-shaped portion and the plate-shaped portion may not be an integrally molded product.
- the side branch portion may not be directly connected to the rod-like portion (this is referred to as the first rod-like portion) connected to the plate-like portion (this is referred to as the first plate-like portion).
- the side branch portion is connected to a second rod-shaped portion different from the first rod-shaped portion, and the second rod-shaped portion and the first rod-shaped portion are a second plate-shaped portion different from the first plate-shaped portion. It may be connected. That is, the side branch portion, the second rod-shaped portion, the second plate-shaped portion, the first rod-shaped portion, and the first plate-shaped portion may be arranged in this order.
- the present invention can be used for a vehicular lamp.
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Abstract
Description
図1は、実施の形態1に係る車両用灯具の正面図である。図2は、実施の形態1に係る車両用灯具の内部構造を示す正面図である。図3(A)は、図2のA-A線に沿った断面図である。図3(B)は、図2のB-B線に沿った断面図である。図4は、実施の形態1に係る車両用灯具が備える光源及び導光体の正面図である。図2では、アウターカバー104及び遮蔽部材114を取り外した状態の車両用灯具100を図示している。
実施の形態2に係る車両用灯具は、灯具外部から棒状部116を視認可能である点を除いて、実施の形態1に係る車両用灯具100の構成と共通する。以下、実施の形態2に係る車両用灯具について、実施の形態1と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。
実施の形態3に係る車両用灯具は、導光体の形状を除いて実施の形態1に係る車両用灯具100の構成と共通する。以下、実施の形態3に係る車両用灯具について、実施の形態1と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。
実施の形態4に係る車両用灯具は、2つの第1光源と2つの棒状部とを備える点を除いて実施の形態1に係る車両用灯具100の構成と共通する。以下、実施の形態4に係る車両用灯具について、実施の形態1と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。
実施の形態5に係る車両用灯具は、板状部の形状を除いて実施の形態4に係る車両用灯具の構成と共通する。以下、実施の形態5に係る車両用灯具について、実施の形態1及び4と異なる構成を中心に説明し、共通する構成については簡単に説明するか、あるいは説明を省略する。
Claims (5)
- 第1光源と、
棒状部及び板状部を有する導光体と、
を備え、
前記導光体は、前記棒状部の周面が前記板状部の側面に接続された構造を有し、
前記板状部は、内部に光拡散材を含有し、
前記第1光源の光は、前記棒状部の一方の端部から前記棒状部に入射し、前記棒状部の前記周面から前記板状部に進入し、前記光拡散材によって前記板状部の主表面から出射されることを特徴とする車両用灯具。 - 前記棒状部と前記板状部とは一体成形品である請求項1に記載の車両用灯具。
- 前記棒状部の前記一方の端部から他方の端部に向けて内面反射しながら棒状部内を進む過程で前記周面から漏れる光が、前記板状部に進入する請求項2に記載の車両用灯具。
- 本車両用灯具は、第2光源をさらに備え、
前記導光体は、前記第2光源の光を前記棒状部の周面から前記棒状部に入射させるための側枝部を有し、
前記第2光源の光は、前記側枝部の端部から前記側枝部に入射し、前記棒状部の前記周面を介して前記側枝部から前記棒状部に進入し、前記棒状部の前記周面から前記板状部に進入し、前記光拡散材によって前記板状部の主表面から出射される請求項1乃至3のいずれか1項に記載の車両用灯具。 - 前記導光体は、前記棒状部の延在方向に対して直交する断面で見たとき、前記棒状部の直径と前記板状部の厚みとの比率が、所定の第1部位と、当該第1部位よりも前記第1光源から離れた第2部位とで異なる請求項1乃至4のいずれか1項に記載の車両用灯具。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP17862109.0A EP3527874B1 (en) | 2016-10-17 | 2017-10-05 | Vehicle lamp fitting |
JP2018546241A JP6998314B2 (ja) | 2016-10-17 | 2017-10-05 | 車両用灯具 |
KR1020197013352A KR20190067210A (ko) | 2016-10-17 | 2017-10-05 | 차량용 등구 |
CN201780063700.7A CN109844404B (zh) | 2016-10-17 | 2017-10-05 | 车辆用灯具 |
US16/386,677 US11015779B2 (en) | 2016-10-17 | 2019-04-17 | Vehicle lamp with light guide having rod-shaped part and plate-shaped part |
Applications Claiming Priority (2)
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JP2016-203823 | 2016-10-17 | ||
JP2016203823 | 2016-10-17 |
Related Child Applications (1)
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US16/386,677 Continuation US11015779B2 (en) | 2016-10-17 | 2019-04-17 | Vehicle lamp with light guide having rod-shaped part and plate-shaped part |
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WO2018074242A1 true WO2018074242A1 (ja) | 2018-04-26 |
Family
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PCT/JP2017/036231 WO2018074242A1 (ja) | 2016-10-17 | 2017-10-05 | 車両用灯具 |
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US (1) | US11015779B2 (ja) |
EP (1) | EP3527874B1 (ja) |
JP (1) | JP6998314B2 (ja) |
KR (1) | KR20190067210A (ja) |
CN (1) | CN109844404B (ja) |
WO (1) | WO2018074242A1 (ja) |
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JP2020004631A (ja) * | 2018-06-29 | 2020-01-09 | 市光工業株式会社 | 車両用灯具 |
JP2020009657A (ja) * | 2018-07-10 | 2020-01-16 | 株式会社小糸製作所 | 車両用灯具 |
JP2020009656A (ja) * | 2018-07-10 | 2020-01-16 | 株式会社小糸製作所 | 車両用灯具 |
JP2020035630A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社小糸製作所 | 車両用灯具 |
JP2021005533A (ja) * | 2019-06-27 | 2021-01-14 | 市光工業株式会社 | 車両用灯具 |
JP2021182488A (ja) * | 2020-05-18 | 2021-11-25 | 市光工業株式会社 | 車両用導光体及び車両用灯具 |
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JP2020077564A (ja) * | 2018-11-09 | 2020-05-21 | 株式会社小糸製作所 | 車輌用灯具 |
KR102217600B1 (ko) | 2019-10-17 | 2021-02-19 | 현대모비스 주식회사 | 라이트가이드 장치 및 이의 순차적 점등방법 |
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- 2017-10-05 EP EP17862109.0A patent/EP3527874B1/en active Active
- 2017-10-05 CN CN201780063700.7A patent/CN109844404B/zh active Active
- 2017-10-05 WO PCT/JP2017/036231 patent/WO2018074242A1/ja active Application Filing
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JP7217574B2 (ja) | 2018-06-29 | 2023-02-03 | 市光工業株式会社 | 車両用灯具 |
JP2020004631A (ja) * | 2018-06-29 | 2020-01-09 | 市光工業株式会社 | 車両用灯具 |
JP7137381B2 (ja) | 2018-07-10 | 2022-09-14 | 株式会社小糸製作所 | 車両用灯具 |
JP2020009657A (ja) * | 2018-07-10 | 2020-01-16 | 株式会社小糸製作所 | 車両用灯具 |
JP2020009656A (ja) * | 2018-07-10 | 2020-01-16 | 株式会社小糸製作所 | 車両用灯具 |
JP7174546B2 (ja) | 2018-07-10 | 2022-11-17 | 株式会社小糸製作所 | 車両用灯具 |
JP7179532B2 (ja) | 2018-08-29 | 2022-11-29 | 株式会社小糸製作所 | 車両用灯具 |
JP2020035630A (ja) * | 2018-08-29 | 2020-03-05 | 株式会社小糸製作所 | 車両用灯具 |
JP2021005533A (ja) * | 2019-06-27 | 2021-01-14 | 市光工業株式会社 | 車両用灯具 |
JP7354613B2 (ja) | 2019-06-27 | 2023-10-03 | 市光工業株式会社 | 車両用灯具 |
WO2021235345A1 (ja) * | 2020-05-18 | 2021-11-25 | 市光工業株式会社 | 車両用導光体及び車両用灯具 |
JP2021182488A (ja) * | 2020-05-18 | 2021-11-25 | 市光工業株式会社 | 車両用導光体及び車両用灯具 |
JP7456281B2 (ja) | 2020-05-18 | 2024-03-27 | 市光工業株式会社 | 車両用導光体及び車両用灯具 |
Also Published As
Publication number | Publication date |
---|---|
JP6998314B2 (ja) | 2022-02-04 |
CN109844404A (zh) | 2019-06-04 |
EP3527874B1 (en) | 2023-06-07 |
KR20190067210A (ko) | 2019-06-14 |
EP3527874A4 (en) | 2020-05-27 |
JPWO2018074242A1 (ja) | 2019-09-05 |
EP3527874A1 (en) | 2019-08-21 |
CN109844404B (zh) | 2021-12-24 |
US20190242546A1 (en) | 2019-08-08 |
US11015779B2 (en) | 2021-05-25 |
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