WO2020243990A1 - 汽车迎宾灯 - Google Patents

汽车迎宾灯 Download PDF

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Publication number
WO2020243990A1
WO2020243990A1 PCT/CN2019/091609 CN2019091609W WO2020243990A1 WO 2020243990 A1 WO2020243990 A1 WO 2020243990A1 CN 2019091609 W CN2019091609 W CN 2019091609W WO 2020243990 A1 WO2020243990 A1 WO 2020243990A1
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WO
WIPO (PCT)
Prior art keywords
lens barrel
cover
lens
face cover
assembly
Prior art date
Application number
PCT/CN2019/091609
Other languages
English (en)
French (fr)
Inventor
赵晓明
马丁·马蒂亚斯
冈瑟·阿尔弗
Original Assignee
深圳市新缔科技有限公司
宝马股份公司
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.)
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Publication date
Application filed by 深圳市新缔科技有限公司, 宝马股份公司 filed Critical 深圳市新缔科技有限公司
Priority to EP19931678.7A priority Critical patent/EP3982038A4/en
Publication of WO2020243990A1 publication Critical patent/WO2020243990A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • 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
    • B60Q1/24—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 for lighting other areas than only the way ahead
    • 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
    • B60Q1/24—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 for lighting other areas than only the way ahead
    • B60Q1/247—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 for lighting other areas than only the way ahead for illuminating the close surroundings of the vehicle, e.g. to facilitate entry or exit
    • 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]
    • 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
    • F21S43/27—Attachment 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
    • 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
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F21/00—Mobile visual advertising
    • G09F21/04—Mobile visual advertising by land vehicles
    • G09F21/049—Mobile visual advertising by land vehicles giving information to passengers inside the vehicles
    • 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
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a welcome lamp, in particular to a welcome lamp with a customizable pattern for automobiles.
  • the existing welcome lamp is basically composed of a high-brightness LED light source and film film, combined with a magnifying lens, a lens fixing bracket and a housing.
  • the realization principle is that the bright LED light source illuminates the film located in the middle of the lens, and the film pattern is projected through the lens, similar to the principle of slide projection.
  • the film may age and fade after being used for a long time and need to be replaced, or the car owner needs to change different patterns according to his own preferences.
  • the replacement pattern of the existing welcome lights must be purchased with a new welcome light, and most of the welcome lights are inconvenient to disassemble and replace, requiring specialized technicians to operate, and some may damage the door
  • the pattern projected by the welcome lamp cannot be changed at will, and the replacement cost is high.
  • a car welcome lamp which includes a cover, an LED lamp, a control circuit board installed in the cover, a lens barrel assembly, and a pattern projection assembly.
  • the lens barrel assembly includes a lens barrel upper part, a lens barrel lower part, and a set
  • the first groove in the lower part of the lens barrel is used to place the pattern projection assembly.
  • the lower part of the lens barrel is provided with a number of protruding bone positions or grooves. Accordingly, the upper part of the lens barrel A number of grooves or convex bone positions are provided, and by means of the press-fitting of the convex bone positions and the groove positions, the pattern projection assembly is placed flat in the first groove of the lower part of the lens barrel.
  • the pattern projection assembly includes an upper bracket, a lower bracket and a film sheet, the lower bracket is provided with a second groove, and the film sheet is laid flat in the second groove.
  • the upper bracket and the lower bracket are clamped and fixed by protrusions and recesses.
  • the cover body includes a body and a face cover.
  • the side of the cavity in the body for accommodating the lower part of the lens barrel is provided with a notch, and the outer wall of the lower part of the lens barrel is provided with anti-slip teeth. A part of the position corresponding to the gap is exposed. .
  • the cover includes a main body and a face cover, the face cover is provided with a through hole, and the lens barrel assembly passes through the through hole to enter the body and face the LED lamp.
  • It also includes a lens cover that shields the through hole, the lens cover is provided with an unlock mark and a lock mark, and the face cover is provided with a notch.
  • the lens cover is rotated relative to the face cover to the unlock mark and the face cover The notches are aligned, the lens cover is separated from the face cover, when the lens cover is rotated relative to the face cover until the lock mark is aligned with the notch on the face cover, the lens cover is covered on the face cover.
  • the present invention can easily replace the film without damaging the door or damaging the welcome lamp, which not only saves time but also saves cost.
  • Fig. 1 is a schematic diagram of the external shape of an embodiment of a car welcome lamp of the present invention
  • Figure 2 is an exploded schematic diagram of an embodiment of the car welcome lamp of the present invention
  • FIG. 3 is a schematic diagram of the external shape of the lens barrel assembly of the embodiment of the automobile welcome lamp of the present invention.
  • FIG. 4 is an exploded schematic diagram of the lens barrel assembly of the embodiment of the automobile welcome lamp of the present invention.
  • Figure 5 is an exploded schematic view of the lens barrel assembly and film assembly of the car welcome lamp embodiment of the present invention.
  • Fig. 6 is a schematic diagram of the upper part of the lens barrel of the lens barrel assembly of the automobile welcome light embodiment of the present invention.
  • an automobile welcome light includes a cover, an LED lamp 20, a control circuit board 30 (such as a PCBA board) and a lens barrel assembly 50 installed in the cover.
  • the cover includes a body 10 and a face cover 40.
  • the body 10 is provided with a heat sink for dissipating heat for the LED lamp 20, and the control circuit board 30 is installed in the cover body by means of a bracket.
  • the face cover 40 is provided with a through hole, and the lens barrel assembly 50 passes through the through hole to enter the body 10 and face the LED lamp 20. It also includes a lens cover 60 that shields the through hole, and the lens cover 60 is provided with an unlock mark 61 and a lock mark 6.
  • the car welcome lamp of the utility model is installed on the car door. When the car door is opened, the pins on the PCBA board are powered on, the PCBA board starts to work, and the LED lights are on. Project to the ground.
  • the lens barrel assembly 50 includes a lens barrel upper part 1, a lens barrel lower part 4 and a first groove 5 arranged in the lens barrel lower part 4, the first groove 5 is used for When placing the pattern projection component 2, there is a foolproof design in the groove, so you don’t have to worry about installing it backwards.
  • the side surface of the cavity for accommodating the lower part 4 of the lens barrel in the body 10 is provided with a notch 4-1, and the outer wall of the lower part of the lens barrel is provided with anti-slip teeth 4-2, part of the anti-slip teeth 4-2 The position corresponding to the gap is exposed. This arrangement facilitates the rotation of the lens barrel assembly 50 to adjust the direction of the pattern so that the pattern can reach a state satisfactory to the user.
  • the pattern projection assembly 2 includes an upper bracket 6 and a lower bracket 8.
  • the upper bracket 6 can be marked with “TOP” characters, and when assembled, the surface with the "TOP” characters faces upward.
  • the lower bracket 8 is provided with a second groove 11, and the film sheet 7 is laid flat in the second groove 11.
  • the lens barrel assembly 50 further includes a lens sheet group including convex lenses arranged in the lens barrel, and the film is arranged between the two convex lenses.
  • the lower part 4 of the lens barrel is provided with a number of protruding bone positions 3, and the upper part 1 of the lens barrel is provided with a number of slots 9 adapted to the protruding bone positions 3; or, the lens barrel
  • the lower part 4 is provided with a number of slots 9, and the upper part 1 of the lens barrel is provided with a protruding bone location 3 that fits with the slots 9.
  • the upper bracket 6 and the lower bracket 8 are clamped and fixed by a plurality of protrusions 10 and a plurality of recesses 12, thereby effectively clamping the film 7 between the upper bracket 6 and the lower bracket 8.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

一种汽车迎宾灯，包括盖体、LED灯（20）、装设于盖体内的控制电路板（30）、透镜筒组件（50）和图案投影组件（2），透镜筒组件（50）包括镜筒上部分（1）、镜筒下部分（4）和设置在镜筒下部分（4）内的第一凹槽（5），该第一凹槽（5）用于放置图案投影组件（2），镜筒下部分（4）设有若干凸起骨位（3）或槽位（9），相应地，镜筒上部分（1）设有若干槽位（9）或凸起骨位（3），借助凸起骨位（3）与槽位（9）的压入配合，图案投影组件（2）平放在镜筒下部分（4）的第一凹槽（5）内。与现有技术相比，该汽车迎宾灯可以很方便地更换菲林，不需要破坏车门和损坏迎宾灯，不但节约时间而且节省成本。

Description

汽车迎宾灯 技术领域
本发明涉及一种迎宾灯，尤其是涉及一种用于汽车的可个性定制图案的迎宾灯。
背景技术
随着人类社会的进步、经济的发展、人们的生活水平越来越高，汽车作为人类必不可少的交通工具走进了千万户，汽车也成了人类时尚的个性展示的载体。因此汽车迎宾灯也就应运而生，当打开车门时，迎宾灯就会投影出各种车主自己定制的图案，形成一种无形的喜悦感帮助车主扫去一天的烦恼。现有的迎宾灯基本上是由一个高亮LED光源和菲林胶片再组合放大透镜和透镜固定支架及壳体组成。实现原理是，高亮LED光源照射位于透镜中间的菲林胶片，通过透镜投射出菲林胶片图案，类似幻灯投影原理。
菲林用久后可能老化褪色需要更换，或者车主根据自己的喜好需要更换不同的图案。但是，现有的迎宾灯更换图案必须得另外再买新的迎宾灯，而大多迎宾灯拆装、更换不方便，需要专门的技术人员才能操作，有的还有可能对车门进行破坏才能实现对迎宾灯更换，因此迎宾灯投影的图案也不能随意更换，且更换成本高。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提出一种
本发明解决其技术问题所采用的技术方案为：
提供一种汽车迎宾灯，包括盖体、LED灯、装设于盖体内的控制电路板、透镜筒组件和图案投影组件，所述透镜筒组件包括镜筒上部分、镜筒下部分和设置在镜筒下部分内的第一凹槽，该第一凹槽用于放置图案投影组件，所述镜筒下部分设有若干凸起骨位或槽位，相应地，所述镜筒上部分设有若干槽位或凸起骨位，借助所述凸起骨位与槽位的压入配合，所述图案投影组件平放在镜筒下部分的第一凹槽内。
进一步地：
所述图案投影组件包括上支架、下支架和菲林片，所述下支架设有第二凹槽，所述菲林片平放于该第二凹槽中。
所述上支架与下支架通过凸起和凹位进行卡合固定。
所述盖体包括本体和面盖，所述本体内用于容纳所述镜筒下部分的腔体侧面设有缺口，所述镜筒下部分的外立壁上设有防滑齿，所述防滑齿一部分对应所述缺口的位置暴露在外。。
所述盖体包括本体和面盖，所述面盖上设有通孔，所述透镜筒组件穿越该通孔进入所述本体内与LED灯正对。
还包括遮蔽所述通孔的透镜盖，该透镜盖上设有开锁标识和关锁标识，所述面盖上设有缺口，当所述透镜盖相对面盖旋转至开锁标识与面盖上的缺口对齐，所述透镜盖脱离面盖，当所述透镜盖相对面盖旋转至关锁标识与面盖上的缺口对齐，所述透镜盖盖合于面盖之上。
与现有技术相比，本发明不需要破坏车门和损坏迎宾灯便可以很方便地更换菲林，不但节约时间而且节省成本。
附图说明
图1是本发明汽车迎宾灯实施例的外部形状示意图；
图2是本发明汽车迎宾灯实施例的分解示意图；
图3是本发明汽车迎宾灯实施例的透镜筒组件的外部形状示意图；
图4是本发明汽车迎宾灯实施例的透镜筒组件的分解示意图；
图5是本发明汽车迎宾灯实施例的透镜筒组件菲林组件的分解示意图；
图6是本发明汽车迎宾灯实施例的透镜筒组件镜筒上部的结构示意图。
具体实施方式
现结合附图，对本发明的较佳实施例作详细说明。
如图1所示，一种汽车迎宾灯，包括盖体、LED灯20、装设于盖体内的控制电路板30(如PCBA板)和透镜筒组件50，盖体包括本体10和面盖40。本体10上设有用于为LED灯20散热的散热件，控制电路板30借助支架装设在盖体内。所述面盖40上设有通孔，所述透镜筒组件50穿越该通孔进入所述本体10内与LED灯20正对。还包括遮蔽所述通孔的透镜盖60，该透镜盖60上设有开锁标识61和关锁标识6。本实用新型汽车迎宾灯装设在车门上，当车门打开，PCBA板上的引脚上电，PCBA板开始工作，LED灯亮，LED灯发出的光线通过菲林和透镜片组，将菲林的图案投影到地面。
如图2至图6所示，所述透镜筒组件50包括镜筒上部分1、镜筒下部分4和设置在镜筒下部分4内的第一凹槽5，该第一凹槽5用于放置图案投影组件2，凹槽内有防呆设计不用担心装反。所述本体10内用于容纳镜筒下部分4的腔体侧面设有缺口4-1，所述镜筒下部分的外立壁上设有防滑齿4-2，所述防滑齿4-2一部分对应所述缺口的位置暴露在外。这样设置以方便转动透镜筒组件50来调节图案的方向以便图案达到用户满意的状态。该图案投影组件2包括上支架6和下支架8，上支架6可以带有“TOP”字符标识，装配时，带“TOP”字符的面朝上。下支架8上设有第二凹槽11，菲林片7平放于该第二凹槽11中。透镜筒组件50还包括设置在镜筒内的包括凸透镜的透镜片组，菲林设置在两片凸透镜之间。
如图4和图6所示，所述镜筒下部分4设有若干凸起骨位3，镜筒上部分1设有与凸起骨位3适配的若干槽位9；或者，镜筒下部分4设有若干槽位9，镜筒上部分1设有与槽位9适配的凸起骨位3。通过若干凸起骨位3与槽位9的压入配合，图案投影组件2固定在镜筒下部分4的第一凹槽5内。
如图5所示，所述上支架6与下支架8通过若干凸起10和若干凹位12进行卡合固定，从而有效地把菲林片7夹在上支架6与下支架8之间。
需要更换菲林时，拧开产品的透镜盖60至开锁标识61与产品面盖40的缺口对齐使透镜盖脱离面盖，然后取出透镜筒组件50，把透镜筒组件50的上下部分分开，取出原来的图案投影组件再水平放入新的图案投影组件。最后插入透镜筒组件接着盖上透镜盖拧动到关锁标识62与产品面盖缺口41对齐，便完成投影组件的更换。
应当理解的是，以上实施例仅用以说明本发明的技术方案，而非对其限制，对本领域技术人员来说，可以对上述实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改和替换，都应属于本发明所附权利要求的保护范围。

Claims (6)

  1. 一种汽车迎宾灯，包括盖体、LED灯、装设于盖体内的控制电路板、透镜筒组件和图案投影组件，其特征在于：所述透镜筒组件包括镜筒上部分、镜筒下部分和设置在镜筒下部分内的第一凹槽，该第一凹槽用于放置图案投影组件，所述镜筒下部分设有若干凸起骨位或槽位，相应地，所述镜筒上部分设有若干槽位或凸起骨位，借助所述凸起骨位与槽位的压入配合，所述图案投影组件平放在镜筒下部分的第一凹槽内。
  2. 根据权利要求1所述汽车迎宾灯，其特征在于：所述图案投影组件包括上支架、下支架和菲林片，所述下支架设有第二凹槽，所述菲林片平放于该第二凹槽中。
  3. 根据权利要求2所述汽车迎宾灯，其特征在于：所述上支架与下支架通过凸起和凹位进行卡合固定。
  4. 根据权利要求1所述汽车迎宾灯，其特征在于：所述盖体包括本体和面盖，所述本体内用于容纳所述镜筒下部分的腔体侧面设有缺口，所述镜筒下部分的外立壁上设有防滑齿，所述防滑齿一部分对应所述缺口的位置暴露在外。
  5. 根据权利要求1所述汽车迎宾灯，其特征在于：所述盖体包括本体和面盖，所述面盖上设有通孔，所述透镜筒组件穿越该通孔进入所述本体内与LED灯正对。
  6. 根据权利要求5所述汽车迎宾灯，其特征在于：还包括遮蔽所述通孔的透镜盖，该透镜盖上设有开锁标识和关锁标识，所述面盖上设有缺口，当所述透镜盖相对面盖旋转至开锁标识与面盖上的缺口对齐，所述透镜盖脱离面盖，当所述透镜盖相对面盖旋转至关锁标识与面盖上的缺口对齐，所述透镜盖盖合于面盖之上。
PCT/CN2019/091609 2019-06-04 2019-06-17 汽车迎宾灯 WO2020243990A1 (zh)

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