WO2019033591A1 - Phare de véhicule à del à haut rendement et procédé de distribution de lumière - Google Patents

Phare de véhicule à del à haut rendement et procédé de distribution de lumière Download PDF

Info

Publication number
WO2019033591A1
WO2019033591A1 PCT/CN2017/110747 CN2017110747W WO2019033591A1 WO 2019033591 A1 WO2019033591 A1 WO 2019033591A1 CN 2017110747 W CN2017110747 W CN 2017110747W WO 2019033591 A1 WO2019033591 A1 WO 2019033591A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
led
bowl
reflective
semi
Prior art date
Application number
PCT/CN2017/110747
Other languages
English (en)
Chinese (zh)
Inventor
赵宏伟
Original Assignee
哈尔滨固泰电子有限责任公司
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 哈尔滨固泰电子有限责任公司 filed Critical 哈尔滨固泰电子有限责任公司
Publication of WO2019033591A1 publication Critical patent/WO2019033591A1/fr

Links

Images

Classifications

    • 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
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature

Definitions

  • the invention relates to a high-efficiency automobile LED headlight and a light distribution method.
  • LEDs are widely used as light sources in various parts of the lamp, which is energy-saving and environmentally friendly compared to conventional bulb-type light sources.
  • LEDs are widely used as light sources in various parts of the lamp, which is energy-saving and environmentally friendly compared to conventional bulb-type light sources.
  • the use of LEDs for headlamps is still relatively small.
  • the utility model relates to a high-efficiency automobile LED headlight, which comprises: a parabolic reflective bowl, which is centered around the parabolic reflective bowl and evenly surrounds a set of semi-elliptical reflective bowls, and the focus of the parabolic reflective bowl is provided with LEDs.
  • the first focus of the semi-elliptical reflector bowl is provided with an LED
  • the second focus of all the semi-elliptical reflector bowls coincides at one point and is on the symmetrical central axis of the parabolic reflector bowl
  • the second focus of the semi-elliptical reflector bowl is provided with a block
  • the light plate is placed at the back focus of the aspherical lens.
  • the light source part comprises an LED and a reflective bowl, and each LED is provided with a reflective bowl as a basic unit of the light source, wherein the reflective bowl has two structures: the first type uses a semi-elliptical reflective bowl The LED is placed at the first focus of the elliptical reflector bowl, and the light emitted by the LED is concentrated to the second focus of the elliptical reflector bowl. Due to the directionality of the LED illumination, only the light is emitted to one side. Therefore, the LED is placed on the side and the light is emitted.
  • the second uses a parabolic reflector bowl, the LED is placed at the focus of the parabola, so that the light emitted by the LED After being reflected by the reflective bowl, the LED is emitted in parallel with the axis of the parabolic reflective bowl;
  • the semi-elliptical reflective bowls are arranged in a circular shape and placed obliquely so that their second focal points are coincident.
  • the parabolic reflective bowl is placed at the center position, and the light exiting direction is facing forward. All the LEDs emit light and are reflected by the reflective bowl. One point, all the emitted light will be concentrated into an area, which constitutes the light source part of the headlight light distribution structure.
  • the light barrier adopts the headlight light barrier and is placed at the back focus of the aspherical lens.
  • the high-efficiency automobile LED headlight light distribution method the light emitted by the concentrated light source, after passing through the lens, projects the light blocking plate to the front of the vehicle 25 meters to form a clear cut-off line to meet the requirements of the low beam. After removing the light barrier, the high beam is achieved.
  • the single LED of the invention has a relatively small size, and each LED is provided with a reflective bowl, which can well control the light pattern of the LED illumination, and is advantageous for the light distribution design.
  • the LEDs of the present invention are all dispersed and arranged to facilitate the dissipation of heat generated by the LEDs, thereby ensuring the service life of the LEDs.
  • the invention can perfectly control the illumination light type of the LED by using the semi-elliptical reflective bowl, which saves half of the space compared with the entire reflective bowl, and is beneficial to reducing the volume of the lamp.
  • parabolic reflector bowl in the middle of the invention enhances the intensity output on the central axis of the lens. Reduces the luminous flux output requirements of the surrounding elliptical reflector bowl, thereby reducing the output power of each LED and reducing the temperature of the LED.
  • the light distribution scheme of the LED headlamp of the invention has a longer life than the traditional bulb type headlamp, is more energy-saving and environmentally friendly, and has higher light efficiency. Compared with the headlamps using a single high-power COB light source, it has better heat dissipation performance, thus ensuring the service life of the lamps.
  • Figure 1 is a schematic view of the structure of the present invention.
  • FIG. 2 is a schematic structural view of a light source portion arrangement of the high efficiency automotive LED headlamp of the present invention.
  • 1 is an LED
  • 2 is a parabolic reflector bowl
  • 3 is a semi-elliptical reflector bowl
  • 4 is a light barrier
  • 5 is an aspherical lens.
  • the utility model relates to a high-efficiency automobile LED headlight, which comprises: a parabolic reflective bowl, which is centered around the parabolic reflective bowl and evenly surrounds a set of semi-elliptical reflective bowls, and the focus of the parabolic reflective bowl is provided with LEDs.
  • the first focus of the semi-elliptical reflector bowl is provided with an LED
  • the second focus of all the semi-elliptical reflector bowls coincides at one point and is on the symmetrical central axis of the parabolic reflector bowl
  • the second focus of the semi-elliptical reflector bowl is provided with a block
  • the light plate is placed at the back focus of the aspherical lens.
  • the light source part comprises an LED and a reflective bowl, and each LED is provided with a reflective bowl as a basic unit of the light source, wherein the reflective bowl has two structures: the first type uses a semi-elliptical reflective bowl The LED is placed at the first focus of the elliptical reflector bowl, and the light emitted by the LED is concentrated to the second focus of the elliptical reflector bowl. Due to the directionality of the LED illumination, only the light is emitted to one side. Therefore, the LED is placed on the side and the light is emitted.
  • the second uses a parabolic reflector bowl, the LED is placed at the focus of the parabola, so that the light emitted by the LED After being reflected by the reflective bowl, the LED is emitted in parallel with the axis of the parabolic reflective bowl;
  • the semi-elliptical reflective bowls are arranged in a circular shape and placed obliquely so that their second focal points are coincident.
  • the parabolic reflective bowl is placed at the center position, and the light exiting direction is facing forward. All the LEDs emit light and are reflected by the reflective bowl. One point, all the emitted light will be concentrated into an area, which constitutes the light source part of the headlight light distribution structure.
  • the light barrier adopts the headlight light barrier and is placed at the back focus of the aspherical lens.
  • the light emitted by the concentrated light source passes through the lens, and then the light blocking plate is projected to the front of the vehicle 25 meters to form a clear cut-off line to achieve the low beam.
  • the LED headlamp light distribution scheme of the invention can effectively utilize the LED light energy and effectively dissipate heat to ensure the service life of the LED.
  • the LED headlamp light distribution scheme adopts a combination of reflection and transmission, and is mainly divided into a light source, a light blocking plate and a lens.
  • the light source section includes an LED and a reflective bowl.
  • Each LED is equipped with a reflective bowl as a basic unit of light source.
  • the reflective bowl has two structures. The first uses an elliptical reflector bowl, the LED is placed at the first focus of the elliptical reflector bowl, and the light from the LED is concentrated to the second focus of the elliptical reflector bowl. Due to the directionality of the LED illumination, it only illuminates to one side. Therefore, the LED is placed sideways, and its illumination direction is perpendicular to the central axis of the reflective bowl, so that only the half reflective bowl can be used to collect all the light emitted by the LED.
  • the second type uses a parabolic reflector bowl, and the LED is placed at the focus of the parabola, so that the light emitted by the LED is reflected by the reflective bowl and then emitted in parallel.
  • the LED illumination direction is parallel to the axis in the reflective bowl.
  • each reflective bowl is provided with an LED, and the elliptical reflective bowls are arranged in a circular shape and are inclined at an angle so that the second focal points are coincident, so that the emitted light is aggregated together.
  • the parabolic reflector is placed in the center position with the exit direction facing the front.
  • different numbers of light sources are used to achieve the illumination required by the optical light standard required by the headlights. All LEDs emit light, which is reflected by the reflective bowl and points to a point where all the emitted light is concentrated into an area that forms part of the light source of the headlamp light distribution structure.
  • the light barrier and the lens use a light barrier and an aspherical lens used in the conventional headlight, and the light barrier is placed at the back focus of the lens, as shown in FIG. After passing through the lens, the light barrier can be projected to the front of the car 25 meters to form a clear cut-off line to meet the requirements of low beam. After removing the light barrier, you can achieve the requirements of high beam.
  • the high-efficiency automobile LED headlight is manufactured by fixing the light board with the LED at the focus of the reflective bowl, and pointing the light-emitting units composed of the plurality of LEDs and the reflective bowl to the same point, and the light-blocking plate is installed at this point.
  • the lens is mounted in front of the light barrier, and the distance between the lens and the light barrier is the focal length of the lens.
  • the light emitted by the LED is reflected by the reflective bowl and concentrated at the light blocking plate.
  • the light is blocked by the light blocking plate, and the remaining light is irradiated to the front through the lens to form the light type required by the low beam.
  • the light barrier When used as a high beam, the light barrier is removed, and the light pattern emitted by the LED is reflected by the reflective bowl and directly passes through the lens to illuminate the front to form the light type required by the high beam.

Landscapes

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

Abstract

L'invention concerne un phare de véhicule à diode électroluminescente (DEL) à haut rendement et un procédé de distribution de lumière. Le phare comprend un bol réfléchissant parabolique (2) et un groupe de bols réfléchissants semi-elliptiques (3) qui entoure uniformément le bol réfléchissant parabolique (2) en utilisant ce dernier comme centre ; une DEL (1) est agencée au niveau du foyer du bol réfléchissant parabolique (2) et des DEL (1) sont agencées au niveau de premiers foyers des bols réfléchissants semi-elliptiques (3) ; des seconds foyers des bols réfléchissants semi-elliptiques (3) coïncident en un point et sont situés sur l'axe central symétrique du bol réfléchissant parabolique (2), tandis qu'une plaque de blocage de lumière (4) est agencée au niveau des seconds foyers des bols réfléchissants semi-elliptiques (3), la plaque de blocage de lumière (4) étant placée au niveau du foyer arrière d'une lentille asphérique (5).
PCT/CN2017/110747 2017-08-18 2017-11-13 Phare de véhicule à del à haut rendement et procédé de distribution de lumière WO2019033591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2017/097964 2017-08-18
CN2017097964 2017-08-18

Publications (1)

Publication Number Publication Date
WO2019033591A1 true WO2019033591A1 (fr) 2019-02-21

Family

ID=65361661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/110747 WO2019033591A1 (fr) 2017-08-18 2017-11-13 Phare de véhicule à del à haut rendement et procédé de distribution de lumière

Country Status (1)

Country Link
WO (1) WO2019033591A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5967647A (en) * 1997-02-06 1999-10-19 Robert Bosch Gmbh Headlight for a vehicle, especially a motor vehicle
JP4289268B2 (ja) * 2004-10-04 2009-07-01 市光工業株式会社 車両用前照灯ユニット
CN104864344A (zh) * 2015-06-08 2015-08-26 哈尔滨固泰电子有限责任公司 汽车led前照灯配光装置及配光方法
CN105090855A (zh) * 2014-05-23 2015-11-25 株式会社小糸制作所 车辆用前照灯
CN106594577A (zh) * 2015-10-19 2017-04-26 法雷奥照明湖北技术中心有限公司 投射式照明和/或信号指示设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5967647A (en) * 1997-02-06 1999-10-19 Robert Bosch Gmbh Headlight for a vehicle, especially a motor vehicle
JP4289268B2 (ja) * 2004-10-04 2009-07-01 市光工業株式会社 車両用前照灯ユニット
CN105090855A (zh) * 2014-05-23 2015-11-25 株式会社小糸制作所 车辆用前照灯
CN104864344A (zh) * 2015-06-08 2015-08-26 哈尔滨固泰电子有限责任公司 汽车led前照灯配光装置及配光方法
CN106594577A (zh) * 2015-10-19 2017-04-26 法雷奥照明湖北技术中心有限公司 投射式照明和/或信号指示设备

Similar Documents

Publication Publication Date Title
CN102095151B (zh) 具有混合配光系统的led汽车远光灯具
CN106439689A (zh) 远近光一体式汽车led前照灯的光学系统
WO2010083637A1 (fr) Source de lumière à diode électroluminescente et lampe à diode électroluminescente l'utilisant
CN201916826U (zh) 具有混合配光系统的led汽车远光灯具
TWM536321U (zh) 照明結構
CN105402669A (zh) 一种远近光一体的led前照灯
WO2022001012A1 (fr) Véhicule et lampe de véhicule à del intégrée pour feux de route et de croisement associée
CN206130804U (zh) 远近光一体式汽车led前照灯的光学系统
CN201909257U (zh) 一种led汽车近光灯
TWM587725U (zh) 照明結構
KR102099793B1 (ko) 차량용 헤드 램프
CN102367939A (zh) 折转式汽车led前照灯近光光学系统
CN105135318A (zh) Led汽车前照灯的光源结构
TWI642568B (zh) 照明結構及其配光方法
TWI418741B (zh) Lighting device
WO2019033591A1 (fr) Phare de véhicule à del à haut rendement et procédé de distribution de lumière
WO2011116635A1 (fr) Dispositif d'éclairage à diodes électroluminescentes et phare à diodes électroluminescentes constitué de celui-ci
CN203810244U (zh) 双模组光斑叠加式汽车led前照灯的近光光学系统
CN111503592A (zh) 一种远近光一体led式车灯
CN207688003U (zh) 远近光一体的车辆前照灯
CN102095150A (zh) 一种led汽车近光灯
CN202266959U (zh) 一种投射式led汽车近光灯
CN104864344A (zh) 汽车led前照灯配光装置及配光方法
CN201507868U (zh) 汽车信号灯
CN209977743U (zh) 一种led灯具

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17921567

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17921567

Country of ref document: EP

Kind code of ref document: A1