EP3865765A1 - Dispositif d'éclairage pour véhicule - Google Patents

Dispositif d'éclairage pour véhicule Download PDF

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Publication number
EP3865765A1
EP3865765A1 EP20157539.6A EP20157539A EP3865765A1 EP 3865765 A1 EP3865765 A1 EP 3865765A1 EP 20157539 A EP20157539 A EP 20157539A EP 3865765 A1 EP3865765 A1 EP 3865765A1
Authority
EP
European Patent Office
Prior art keywords
light
vehicle
light guide
condensing lens
emitting module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20157539.6A
Other languages
German (de)
English (en)
Inventor
Chung Chiang Pan
Cheng Chih Lai
Chao Pai Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tan De Tech Co Ltd
Original Assignee
Tan De Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tan De Tech Co Ltd filed Critical Tan De Tech Co Ltd
Priority to EP20157539.6A priority Critical patent/EP3865765A1/fr
Publication of EP3865765A1 publication Critical patent/EP3865765A1/fr
Pending legal-status Critical Current

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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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S41/26—Elongated 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • 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
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • 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
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

Definitions

  • This invention pertains to a light device for vehicle; especially to a light source capable of casting a desirable illumination for the automobile.
  • the vehicles are requested to deploy main beams, low beams, turn signals at both sides of front along with the prevailing daytime running lights (DRL) in the limited areas for headlight installation.
  • DRL daytime running lights
  • the spaces for each lamps have largely been reduced which also shrinks the illumination areas. Even so, the headlight installation still need to conform to the regulatory norms on the light luminance, distribution pattern and the irradiation angle for the sake of driving safety.
  • This invention pertains to a light device for vehicle capable of distributing an elongated narrow pattern with desirable luminance.
  • the light device for vehicle comprises an emitting module, a light condensing lens and a light guide.
  • the light guide forms a hollow column defining one light incident side and one light output side away from each other, and each sides are respectively deployed with the emitting module and the light condensing lens.
  • the light guide has a housing consisted of at least two chassis, and each of the chassis has a number of adjacent side walls.
  • the hollow column of light guide provide illumination guidance having an interior geometrically shaping the light boundary for casting an appropriate distribution pattern and waiving the element degradation caused from overheated. Furthermore, the devise of a solid column deployed in the light guide is as well a recommendation providing for a light blending purpose or as a structural support avoid a overheated deformation.
  • the light device for vehicle may be equipped with a modularized construct.
  • the emitting module may be deployed with only one emitting element having quantity in correspondence with that of the light guide and that of the light condensing lens, or the emitting module may be arranged with a main source located at the center bilaterally arranged with two secondary elements for light compensation in order to generate an elongated distribution pattern and to provide a sufficient illumination in a confined spaces of the light device for vehicle.
  • the emitting element may be electrically connected to a dimmer for adjusting the light intensity compensation.
  • Fig. 1 to Fig. 3 illustrate a low beam device for vehicle is arranged, from front to rear, with a light condensing lens 20, a housing 15 integrated with a light guide 10, an emitting module 30 and a radiating fins 40.
  • the light guide 10 has an interior of hollow column applied with a reflective film, and the housing 15 and the light guide form into an integral deployable for the light condensing lens 20 and the emitting module 30.
  • the radiating fins 40 is perpendicular to the emitting module 30.
  • the emitting module 30 has a base 31 to accommodate an emitting elements 330, and the light guide 10 has an hollow interior defining a light incident side and a light output side away from each other.
  • the emitting module 30 is mounted on the light output side and the light condensing lens 20 is deployed nearby the light incident side and wielded on the housing 15 by way of ultrasonic.
  • the hollow interior of light guide converges in shape from the light incident side toward the light output side, and both of them are respectively responsible for the light intensity and the distribution pattern.
  • the light beam outputs from the emitting elements 330 having been concentrated and modified by the light condensing lens 20 in exchange for a uniformity light intensity in order to project out a desirable distribution pattern.
  • the light device for vehicle with differences from the previous embodiment lie in the emitting module 30 comprising a main emitting element 332 and two secondary emitting elements 331, 333 bilaterally arranged beside the main emitting element 332.
  • Three emitting elements 331, 332, 333 are disposed at equal distance on the base 31 in an elongated formation about 2 cm.
  • the light condensing lens 20 has a quantity in correspondence with that of the emitting elements to be disposed at relative positions and arranged in alignment.
  • the light guide 10 includes an upper chassis 11 and a lower chassis 12, and the upper chassis 11 and the lower chassis 12 can be assembled into a hollow column by the connection of their linking edges where is deployed with a plurality of protruding or indenting side walls 111, 112, 113, 121, 122, 123, 111 pairing with 121, 112 pairing with 122, and 113 pairing with 123.
  • the hollow column has a quantity and position in correspondence with that of the emitting elements.
  • the side walls 111, 112, 113, 121, 122, 123, applied with metallic reflective film, constitute the hollow column and define a light incident side and a light output side.
  • the emitting elements 331, 332, 333 and the curve surfaces of the light condensing lens 20 respectively direct to the light incident side and the light output side of the hollow column.
  • the light condensing lens 20 concentrates and modifies the propagated from the light output side before projecting out a distribution pattern.
  • a main emitting element and two bilateral emitting elements for light compensation in order to generate an elongated distribution pattern can not only satisfy the illumination intensity but also reduce the installation area of light device for vehicle. Furthermore, the employment of a hollow column enables the light guide not only guide the light source propagated from the emitting module to process light uniformity and shape the distribution pattern of desire by the internal contour of side walls, but also prolong the life time for usage compared with the other adoption of materials such as solid-transparent plastic or silicone.
  • the hollow column of the light guide forms a closed cylindrical deployed in front of the emitting module 30, wherein the surfaces of the upper and lower chassis 11, 12 is respectively divided into linking edges and side walls.
  • the reflective film may be applied to the side walls or applied together with the adjacent surfaces of the upper chassis 11 and the lower chassis 12.
  • the linking edges and the side walls of the light guide share the same boundary for sealing possible exposure, and the chassis may be made of a heat dispersion material avoiding an overheated module.
  • the upper chassis 11 and the lower chassis 12 respectively protrude forward holding panels 13, 14 deployable for the light condensing lens 20 in help of dwindling the required elements and simplifying the assembly steps.
  • the main emitting element 332 is a double-chip LED facing to the light guide equipped with a geometrical interior in assistance of casting a higher-right and lower-left light of distribution pattern.
  • the secondary emitting elements 331, 333 are triple-chip LED projecting a distribution pattern with different optical lengths in order to provide a bilateral compensation for the main emitting element 332.
  • the emitting elements 331, 332, 333 may be connected to a dimmer for adjusting the light intensity emitted from emitting elements 331, 333 as a light compensation.
  • light guide 10 may be a solid column for light blending and for structural supporting purposes avoiding possible overheated deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20157539.6A 2020-02-14 2020-02-14 Dispositif d'éclairage pour véhicule Pending EP3865765A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20157539.6A EP3865765A1 (fr) 2020-02-14 2020-02-14 Dispositif d'éclairage pour véhicule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20157539.6A EP3865765A1 (fr) 2020-02-14 2020-02-14 Dispositif d'éclairage pour véhicule

Publications (1)

Publication Number Publication Date
EP3865765A1 true EP3865765A1 (fr) 2021-08-18

Family

ID=69630216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20157539.6A Pending EP3865765A1 (fr) 2020-02-14 2020-02-14 Dispositif d'éclairage pour véhicule

Country Status (1)

Country Link
EP (1) EP3865765A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050207162A1 (en) * 2004-03-18 2005-09-22 Koito Manufacturing Co., Ltd. Lighting unit for vehicle
JP2009134964A (ja) * 2007-11-29 2009-06-18 Stanley Electric Co Ltd 車両用前照灯
EP2101107A2 (fr) * 2008-03-12 2009-09-16 Koito Manufacturing Co., Ltd Appareil de phare de véhicule
US20090290372A1 (en) * 2008-05-26 2009-11-26 Koito Manufacturing Co., Ltd. Vehicle headlamp
US20100020561A1 (en) * 2008-07-28 2010-01-28 Hyundai Mobis Co., Ltd. Head lamp
EP2525141A1 (fr) * 2010-01-12 2012-11-21 Koito Manufacturing Co., Ltd. Phare pour véhicule
EP2561268A2 (fr) * 2010-04-19 2013-02-27 Koninklijke Philips Electronics N.V. Agencement d'éclairage frontal à diodes électroluminescentes (del)
US20130120988A1 (en) * 2010-07-20 2013-05-16 Magna International, Inc. Hybrid projector led low beam headlamp

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050207162A1 (en) * 2004-03-18 2005-09-22 Koito Manufacturing Co., Ltd. Lighting unit for vehicle
JP2009134964A (ja) * 2007-11-29 2009-06-18 Stanley Electric Co Ltd 車両用前照灯
EP2101107A2 (fr) * 2008-03-12 2009-09-16 Koito Manufacturing Co., Ltd Appareil de phare de véhicule
US20090290372A1 (en) * 2008-05-26 2009-11-26 Koito Manufacturing Co., Ltd. Vehicle headlamp
US20100020561A1 (en) * 2008-07-28 2010-01-28 Hyundai Mobis Co., Ltd. Head lamp
EP2525141A1 (fr) * 2010-01-12 2012-11-21 Koito Manufacturing Co., Ltd. Phare pour véhicule
EP2561268A2 (fr) * 2010-04-19 2013-02-27 Koninklijke Philips Electronics N.V. Agencement d'éclairage frontal à diodes électroluminescentes (del)
US20130120988A1 (en) * 2010-07-20 2013-05-16 Magna International, Inc. Hybrid projector led low beam headlamp

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