WO2017114027A1 - Phare d'automobile à led - Google Patents

Phare d'automobile à led Download PDF

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Publication number
WO2017114027A1
WO2017114027A1 PCT/CN2016/106830 CN2016106830W WO2017114027A1 WO 2017114027 A1 WO2017114027 A1 WO 2017114027A1 CN 2016106830 W CN2016106830 W CN 2016106830W WO 2017114027 A1 WO2017114027 A1 WO 2017114027A1
Authority
WO
WIPO (PCT)
Prior art keywords
led
light
concentrator
light source
tapered
Prior art date
Application number
PCT/CN2016/106830
Other languages
English (en)
Chinese (zh)
Inventor
廖汉忠
马建设
丁航飞
柳立群
杨涛
苏萍
Original Assignee
深圳华耀车灯科技有限公司
清华大学深圳研究院
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 深圳华耀车灯科技有限公司, 清华大学深圳研究院 filed Critical 深圳华耀车灯科技有限公司
Publication of WO2017114027A1 publication Critical patent/WO2017114027A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens 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
    • F21S41/10—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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—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
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/40—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the invention relates to the technical field of vehicle illumination, in particular to an LED automobile headlight.
  • the LED light source is a green light source with high efficiency, long life, fast response and strong shock resistance. Widely used in automotive taillights, daytime running lights, indicator lights, etc.
  • Parabolic mirror The processing is easy to realize, but the volume is large and the degree of freedom of light distribution is small. Currently, it is mainly used in high beam headlights;
  • Free-form surface mirror contains many asymmetric structural elements, and the processing difficulty is high;
  • composite ellipsoid reflector contains many asymmetric structural elements, high processing difficulty, in the face of mass manufacturing, due to manufacturing tolerance, quality assurance There are more limitations in terms of aspects.
  • the present invention provides an LED automobile headlight, comprising an LED light source, a cone concentrator, and a condensing mirror, wherein the LED light source corresponds to an incident end face of the tapered concentrator, and the condensing mirror corresponds to the tapered set The light exit end of the light.
  • the automotive headlamp further includes a composite shaping light shield
  • the LED light source is three
  • the three LED light sources are a first LED light source, a second LED light source, and a third LED light source, respectively.
  • the conical concentrators are three, and the three conical concentrators are respectively a first conical concentrator, a second conical concentrator, and a third conical concentrator
  • the first LED illuminator corresponds to An light incident end surface of the first tapered light collector
  • an light emitting end surface of the first tapered light collector corresponds to one end of the composite shaping light shielding plate
  • the second LED light source corresponds to the second tapered light collecting device
  • the light-emitting end surface of the second tapered light collector corresponds to one end of the composite shaping light shielding plate
  • the third tapered light collecting device is located inside the composite shaping light shielding plate
  • the third LED light source Corresponding to the light incident end surface of the third tapered concentrator, the condensing mirror is located at the other end
  • the height difference between the left and right sides of the composite shaping plate is H1, 0.1mm ⁇ H1 ⁇ 1mm.
  • the height difference H2 of the edge of the composite shaping plate to the third tapered concentrator is 0.5 mm ⁇ H2 ⁇ 2.5 mm.
  • the composite shaping plate has an inner radius R, 15 mm ⁇ R ⁇ 60 mm.
  • the tapered concentrator comprises an internal reflection cone concentrator and an internal total reflection cone concentrator.
  • the exit angle of the right end face of the concentrator C is the angle between the side of the cone concentrator and the central axis, and N is the number of times the light is reflected in the conical concentrator.
  • the relationship between the length D of the tapered concentrator and the LED light source is: D ⁇ ⁇ L * 3, and ⁇ L represents the effective light-emitting area diameter of the LED light source.
  • the invention has the beneficial effects that the LED automobile headlamp of the invention has high optical efficiency, simple structure, easy engineering realization, and popularization and application of values.
  • Figure 1 is a schematic view showing the structure of a first embodiment of the present invention
  • Figure 2 is a perspective view of a second embodiment of the present invention.
  • Figure 3 is a schematic structural view of a second embodiment of the present invention.
  • Figure 4 is a cross-sectional structural view showing a second embodiment of the present invention.
  • Figure 5 is a perspective view of a third embodiment of the present invention.
  • Figure 6 is a schematic structural view of a third embodiment of the present invention.
  • Figure 7 is a cross-sectional structural view showing a third embodiment of the present invention.
  • Figure 8 is a schematic view showing the working principle of the tapered concentrator of the present invention.
  • Figure 9 is a schematic view showing the illumination of the LED light source of the present invention.
  • FIG. 10 is a schematic cross-sectional structural view of a composite shaping light shield of the present invention.
  • Figure 11 is a schematic structural view of a composite shaping light shield of the present invention.
  • Figure 12 is a diagram of the light distribution requirements of the "GB25991 automotive LED headlamps" III area.
  • Figure 13 is a schematic view showing the structure of a condensing mirror of the present invention.
  • the beam angle is greater than 120 degrees optical characteristics, and "GB25991 Indicator requirements for automotive LED headlamps.
  • the invention provides an LED automobile headlight which is different from the composite ellipsoidal reflector with high optical efficiency, simple structure and easy to realize in engineering manufacture.
  • the LED automobile headlight is an LED high beam headlight, comprising an LED light source 1, a cone concentrator 2, and a condensing mirror 3, wherein the LED light source 1 Corresponding to the light incident end surface of the tapered concentrator 2, the condensing mirror 3 corresponds to the light exit end surface of the tapered concentrator 2.
  • the LED automobile headlight is an LED low beam headlight, and comprises a composite shaping light shield 4, wherein the LED light source 1 is three or three.
  • the LED light source 1 is a first LED light source 5, a second LED light source 6, and a third LED light source 7, respectively.
  • the tapered light collectors 2 are three, and the three tapered light collectors 2 are respectively a first tapered set.
  • the light-emitting end surface of the shaped light concentrator 8 corresponds to one end of the composite shaping light shielding plate 4
  • the second LED light source 6 corresponds to the light-incident end surface of the second tapered light concentrating device 9, and the second tapered light collecting device
  • the light-emitting end surface of the 9 corresponds to one end of the composite shaping light shield 4
  • the third tapered light collector 10 is located inside the composite shaping light shield 4
  • the third LED light source 7 corresponds to the third tapered light collection
  • the light incident end surface of the device 10 is located at the other end of the composite shaping light shielding plate 4.
  • the LED automotive headlamp is also an LED low beam headlight, and the third embodiment is different from the second embodiment in the first LED.
  • the placement angles of the light source 5, the second LED light source 6, the first tapered concentrator 8, and the second tapered concentrator 9 are different from those of the second embodiment.
  • LED light source 1 Provide sufficient luminous flux and pass the light distribution design to meet the requirements of the high beam and low beam headlights of GB25991 Automotive LED Headlamps.
  • Conical concentrator 2 collecting the luminous flux emitted by the LED light source 1, reducing the exiting beam angle of the LED light source 1, and facilitating the light distribution design of the condensing mirror 3; the tapered concentrator 2 has two implementation modes: internal total reflection and internal reflection . Its characteristics are: high utilization rate of light energy, small volume and uniform illumination.
  • Total total reflection a high-transmission, high-refractive-index optical material is used to make a cone-shaped concentrator 2, and the light source of the LED light source 1 enters therein, and total reflection occurs therein until the light-emitting end face of the cone-shaped concentrator 2 is emitted.
  • the tapered concentrator 2 is formed into a cavity structure, and a highly reflective film layer is plated on the inner wall.
  • Rapidly reducing the beam angle of the LED light source 1 is beneficial to the light distribution design of the condensing mirror 3, wherein, as shown in FIG. 8, A is the initial angle of the light emitted by the LED light source 1, and B is the outgoing light of the LED light source 1 leaving the cone.
  • the relationship between the length D of the tapered concentrator 2 and the LED light source 1 is D ⁇ ⁇ L * 3.
  • the oblique line area is the effective light-emitting area of the LED light source 1
  • ⁇ L is the effective light-emitting area diameter of the LED light source 1.
  • the beam of the exit end of the cone concentrator 2 is shaped to form a cut-off line.
  • the height difference between the left and right sides of the composite shaping plate 4 is H1, 0.1 mm ⁇ H1 ⁇ 1 mm.
  • the height difference H2 from the upper edge of the composite shaping plate 4 to the third tapered concentrator 10 is 0.5 mm ⁇ H2 ⁇ 2.5 mm.
  • the inner radius of the composite shaping plate 4 has a radius R, 15 mm ⁇ R ⁇ 60 mm.
  • the composite shaping plate 4 is combined with a conical concentrator structure, and the III area required for "GB25991 automotive LED headlamp" is independently distributed, so that the illuminance of the III area is adjustable and the illumination is uniform. Conducive to the driver to observe road signs and signs.
  • Figure 12 is a diagram of the light distribution requirements of the "GB25991 automotive LED headlamps" III area.
  • the LED car headlights of the present invention test the receiving screen at a distance of 25 meters, and the illumination in the III area is uniform and the illuminance can be adjusted, which is beneficial for the driver to observe the road signs and signs, and also has warnings to the roadside pedestrians.
  • the effect is that the light intensity is soft and does not hurt the eyes.
  • Condenser 3 Designed according to the optical characteristics of the conical concentrator 2, the light beam reaching the composite shaping plate 4 is distributed, so that the illuminance distribution on the receiving screen at 25 meters far meets the GB25991 automotive LED headlamp The indicator requires a condensing mirror 3 as shown in FIG.
  • the receiving screen for the experiment located at the front end of the headlight 25 meters, the length and width are greater than 8m * 4m.
  • the invention combines the cone concentrator in the structure of the composite shaping light plate 4, and specifically defines the parameter range thereof, and independently distributes the light to the national standard "GB25991 automotive LED headlamp” III area, and obtains uniform illumination and meets the national standard. The method required.
  • the invention adopts the cone concentrator 2 to collect the beam of the LED light source 1 with high efficiency, and rapidly reduces the beam exit angle calculation method, and obtains a uniform illuminance distribution, which is advantageous for the concentrating mirror light distribution design.
  • the invention adopts the cone concentrator method, and can be applied to the light distribution design of the LED high beam headlight, the LED low beam headlight, and the LED far and near integrated automobile headlight.
  • the LED automobile headlamp of the invention has high optical efficiency, simple structure, easy engineering realization, and popularization and application of values.

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)

Abstract

L'invention concerne un phare d'automobile à LED comprenant une source de lumière à LED (1), un collecteur de lumière conique (2) et un condenseur (3). La source de lumière à LED (1) correspond à une surface d'extrémité d'entrée de lumière du collecteur de lumière conique (2) et le condenseur (3) correspond à une surface d'extrémité de sortie de lumière du collecteur de lumière conique (2). Le phare d'automobile à LED offre les avantages d'un rendement optique élevé, d'une structure simple et d'une mise en œuvre facile d'un processus de fabrication, apportant ainsi une valeur ajoutée dans diverses applications et méritant des efforts promotionnels.
PCT/CN2016/106830 2015-12-29 2016-11-22 Phare d'automobile à led WO2017114027A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201511024421.9 2015-12-29
CN201511024421.9A CN105465717A (zh) 2015-12-29 2015-12-29 Led汽车前照灯

Publications (1)

Publication Number Publication Date
WO2017114027A1 true WO2017114027A1 (fr) 2017-07-06

Family

ID=55603708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/106830 WO2017114027A1 (fr) 2015-12-29 2016-11-22 Phare d'automobile à led

Country Status (2)

Country Link
CN (1) CN105465717A (fr)
WO (1) WO2017114027A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108626676A (zh) * 2018-02-09 2018-10-09 常州星宇车灯股份有限公司 一种车用投影灯模组

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105465717A (zh) * 2015-12-29 2016-04-06 深圳华耀车灯科技有限公司 Led汽车前照灯
CN211875915U (zh) 2020-01-20 2020-11-06 华域视觉科技(上海)有限公司 遮光板、近光光学模组、近光照明模组、车灯及车辆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217937A (ja) * 2008-03-06 2009-09-24 Stanley Electric Co Ltd 車両用前照灯
CN103256564A (zh) * 2012-02-17 2013-08-21 汽车照明罗伊特林根有限公司 用于机动车灯的光导体装置
WO2014174843A1 (fr) * 2013-04-26 2014-10-30 三菱電機株式会社 Module de phare pour véhicule, unité de phare pour véhicule et dispositif de phare pour véhicule
CN105465717A (zh) * 2015-12-29 2016-04-06 深圳华耀车灯科技有限公司 Led汽车前照灯
CN105539270A (zh) * 2015-12-29 2016-05-04 深圳华耀车灯科技有限公司 自适应led汽车前照灯
CN205256151U (zh) * 2015-12-29 2016-05-25 深圳华耀车灯科技有限公司 自适应led汽车前照灯
CN205278941U (zh) * 2015-12-29 2016-06-01 深圳华耀车灯科技有限公司 Led汽车前照灯

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009217937A (ja) * 2008-03-06 2009-09-24 Stanley Electric Co Ltd 車両用前照灯
CN103256564A (zh) * 2012-02-17 2013-08-21 汽车照明罗伊特林根有限公司 用于机动车灯的光导体装置
WO2014174843A1 (fr) * 2013-04-26 2014-10-30 三菱電機株式会社 Module de phare pour véhicule, unité de phare pour véhicule et dispositif de phare pour véhicule
CN105465717A (zh) * 2015-12-29 2016-04-06 深圳华耀车灯科技有限公司 Led汽车前照灯
CN105539270A (zh) * 2015-12-29 2016-05-04 深圳华耀车灯科技有限公司 自适应led汽车前照灯
CN205256151U (zh) * 2015-12-29 2016-05-25 深圳华耀车灯科技有限公司 自适应led汽车前照灯
CN205278941U (zh) * 2015-12-29 2016-06-01 深圳华耀车灯科技有限公司 Led汽车前照灯

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108626676A (zh) * 2018-02-09 2018-10-09 常州星宇车灯股份有限公司 一种车用投影灯模组

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