EP4165342A1 - Module lumineux destiné à être monté dans un bloc optique pour véhicule automobile - Google Patents
Module lumineux destiné à être monté dans un bloc optique pour véhicule automobileInfo
- Publication number
- EP4165342A1 EP4165342A1 EP21732959.8A EP21732959A EP4165342A1 EP 4165342 A1 EP4165342 A1 EP 4165342A1 EP 21732959 A EP21732959 A EP 21732959A EP 4165342 A1 EP4165342 A1 EP 4165342A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical reflector
- screen
- optical
- vis
- light 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.)
- Granted
Links
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
- 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
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- 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
- 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
-
- 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
- F21S43/51—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
- F21S45/20—Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting
Definitions
- Light module intended to be mounted in an optical unit for a motor vehicle
- the present invention relates to a light module intended to be mounted in an optical unit for a motor vehicle.
- a light module consists of a light source associated with its own optics, so as to allow the projection of a light beam in accordance with the regulations.
- optical units In order to facilitate the mounting of the light modules on a motor vehicle, they are previously grouped together in optical units.
- the optical units are subsequently embedded in housings in the body of the motor vehicle, provided for this purpose.
- An optical unit thus makes it possible to simultaneously install several light modules on a motor vehicle, simply and quickly.
- an optical unit comprises an optical box of standardized shape, to fit perfectly into a housing in the body of a motor vehicle.
- the light modules are arranged in the optical housing.
- the optical box includes an opening which is closed by a transparent glass, in order to allow the light modules to illuminate the environment of the motor vehicle while protecting them from the elements and dust.
- the present invention aims to solve this technical problem, by providing a light module comprising a screen backlit by a light source, preventing condensation on the surface of the screen during operation of the light module.
- a light module according to the invention intended to be mounted in an optical unit for a motor vehicle, comprises a light source, an optical reflector reflecting the light emitted by the light source and a screen placed in front of the optical reflector, the screen being able to transmit at least part of the light reflected by the optical reflector.
- the invention is remarkable in that the edge of the optical reflector facing the screen is extended by a rim extending in the direction of the screen, and the periphery of the screen facing the optical reflector is curved so as to extend parallel or substantially parallel to the rim of the optical reflector, and the rim of the optical reflector is kept away from the screen so to allow the passage of an air flow between the optical reflector and the screen.
- the invention also relates to the following variant embodiments:
- the length of the rim of the optical reflector defined in a direction parallel or substantially parallel to the direction of emission of the light beam emitted by the light module, is between 2 mm and 20 mm, preferably between 5 mm and 15 mm; - the smallest distance between the edge of the optical reflector and the periphery of the screen vis-à-vis the optical reflector, is between 0.5 mm and 10 mm, preferably between 0.5 mm and 2 mm;
- the rim of the optical reflector has a thickness smaller than the thickness of the edge of the optical reflector, so as to form a riser delimiting the edge of the rim of the optical reflector, and the height of the riser is greater than the thickness of the perimeter of the screen, and the perimeter of the screen is kept facing the riser so as not to exceed the riser;
- the riser is adjacent to an outer face of the optical reflector, the outer face being opposite to an inner face of the optical reflector illuminated by the light source;
- the periphery of the screen facing the optical reflector is extended by several supporting appendages, each supporting appendage is able to attach to a lug present on the edge of the optical reflector; [0020] The periphery of the screen facing the optical reflector is extended by several centering appendages, each centering appendage is configured to fit into a housing present on the edge of the optical reflector.
- the invention also relates to an optical unit for a motor vehicle, comprising an optical housing comprising an opening closed by a glass.
- the optical unit comprises a light module as described above and the optical reflector of the light module comprises a holding appendage, cooperating with an internal wall of the optical box, so as to hold the optical reflector to the internal wall.
- the periphery of the screen vis-à-vis the optical reflector has a notch
- the optical reflector and / or the optical housing has a notch vis-à-vis the notch in the optical reflector, so as to allow or promote the passage of an air flow between the internal wall of the optical housing, the optical reflector and the screen.
- the periphery of the screen facing the optical reflector comprises a riser bearing against a wall of the optical housing.
- FIG. 1 is a schematic view of a longitudinal section of an optical unit comprising a light module according to the invention
- FIG. 2 is a schematic view of a partial longitudinal section of a light module shown in Figure 1;
- FIG. 3 is a schematic view of a bottom view of the block illustrated in Figure 1;
- FIG. 4 is a schematic view of a partial longitudinal section of a light module illustrated in Figure 1, showing a clipping system;
- FIG. 5 is a schematic view of a partial longitudinal section of a light module illustrated in Figure 1, showing a guide system to facilitate alignment between the screen and the optical reflector of the light module;
- FIG. 6 is a schematic view of a partial longitudinal section of a light module illustrated in Figure 1, comprising notches so as to facilitate the circulation of an air flow in the optical unit.
- the invention proposes a light module comprising a screen backlit by a light source, making it possible to prevent a phenomenon of condensation on the surface of the screen of the light module during its operation.
- Figures 1 to 6 illustrate a non-limiting embodiment of a light module 2 according to the invention, mounted in an optical unit for a motor vehicle.
- the light module 2 comprises a light source 4 capable of emitting a light beam 6 meeting regulatory specifications.
- the light source 4 is able to emit a light beam 6 of white, red or amber color.
- the light module 2 comprises an optical reflector 8 arranged vis-à-vis the light source 4, so that an internal face 10 of the optical reflector reflects at least part of the light beam 6 emitted by the light source 4 in the direction of a screen 12.
- the internal face 10 of the optical reflector is of concave shape.
- the optical reflector is made from one of the following materials: polycarbonate, acrylonitrile butadiene styrene, poly (methyl methacrylate).
- the internal face 10 of the optical reflector is preferably covered with a metallized layer, in order to increase its reflection properties.
- the optical reflector has an outer face 14, connected to the inner face 10 by means of an edge 16 facing the screen 12. According to the present example, the outer face 14 is substantially parallel to the inner face 10.
- the edge 16 of the optical reflector located vis-à-vis the screen 12, is extended by a rim 18. The rim extends in the direction of the screen 12.
- the length of the rim 18 of the optical reflector 8, defined in a direction parallel or approximately parallel to the direction of emission of the emitted light beam 6 by the light module, is between 2 mm and 20 mm, preferably between 5 mm and 15 mm.
- the thickness of the rim 18, defined in a direction normal or substantially normal to the internal face 10 of the optical reflector, is between 10 mm and 40 mm, preferably between 15 mm and 25 mm.
- the light module comprises a screen 12, arranged vis-à-vis the internal face 10 of the optical reflector, so as to be backlit by the light beam 6 emitted by the light source 4.
- the screen is transparent.
- Screen 12 is made from one of the following materials: poly (methyl methacrylate) or polycarbonate.
- the screen 12 is partially covered by an opaque layer to the light beam 6 emitted by the light source 4, so that a light pattern appears and is visible by an observer during the activation of the light module 2.
- the outline of the screen is covered by the opaque layer so as to highlight the light pattern.
- the opaque layer can be present on an internal or external face of the screen.
- the expression "internal face” denotes a face of an object illuminated directly by the light beam 6.
- the invention provides an original solution for preserving the dark outline of the screen 12, avoiding a phenomenon of leakage of the light beam 6 around the screen when the source is activated. luminous 4, while limiting the risk of a layer of condensation forming on the surface of the screen 12.
- the invention provides an original arrangement between the optical reflector 8 and the screen 12. More specifically, as illustrated in Figure 2, the periphery 20 of the screen located vis-à-vis the reflector optical 8, is curved so as to extend parallel or substantially parallel to the rim 18 of the optical reflector 8, and the rim 18 of the optical reflector is kept away from the screen 12 so as to allow the passage of a flow of air between the optical reflector 8 and the screen 12.
- this particular assembly in the form of a tiling, between the rim 18 of the optical reflector 8 and the periphery 20 of the screen delimits a sinuous passage in the form of a tiling. baffle so as to completely prevent the light beam 6 emitted by the light source 4 from reaching the outside of the light module 2, while allowing the circulation of an air flow between the outside and the inside of the module bright 2.
- the smallest distance between the rim 18 of the optical reflector 8 and the periphery 20 of the screen vis-à-vis the optical reflector is between 0.5 mm and 10 mm, from preferably between 0.5 mm and 2 mm, to promote sufficient air circulation between the inside and the outside of the light module 2 in order to prevent condensation on the screen 12.
- the periphery 20 of the screen 12 is superimposed on the rim 18 of the optical reflector 8, over a distance of between 5 mm and 50 mm, preferably between 5 mm and 15 mm, in order to greatly attenuate the intensity of a light beam propagating between the screen 12 and the optical reflector 8 , preferably completely attenuate the intensity.
- the rim 18 of the optical reflector 8 has a thickness smaller than the thickness of the edge 16 of the optical reflector, so as to form a riser 22 defining the edge 16 of the rim 18 of the optical reflector.
- the riser 22 is perpendicular or substantially perpendicular to the internal face 10 of the optical reflector.
- the height of the riser is greater than the thickness of the periphery 20 of the screen, so that the periphery of the screen is kept facing the riser 22 without exceeding the riser.
- the riser 22 is formed so that the periphery 20 of the screen 12 is in the extension of the external face 14 of the optical reflector 8, so as to preserve the homogeneity of the external surface of the light module 2. .
- each retaining appendage 24 comprises a tab 26 extending parallel to the outer face 14 of the optical reflector.
- Each tab comprises an opening 28 intended to cooperate with a lug 30 present on the external face 14 of the optical reflector 8, so as to ensure the maintenance of the periphery 20 of the screen at the edge 16 of the optical reflector 8 by a reversible clipping technique.
- the screen 12 also includes centering appendages 32 visible in Figures 3 and 5.
- Each centering appendage 32 consists of a tab 34 s' extending parallel to the outer face 14 of the optical reflector.
- the free ends of the tabs 34 are narrow in shape, in the shape of a "V” or "U”, in order to fit more easily into dedicated housings 36 present on the outer face 14 of the optical reflector.
- the light module 2 is arranged in an optical box 38 of an optical unit 40, intended to be mounted on a motor vehicle.
- the optical box 38 has an opening closed by a glass 42.
- the glass is transparent and protects the light module from bad weather. as well as external dust.
- the light module 2 is arranged so that its screen 12 faces the mirror 42.
- the optical reflector 8 comprises at its outer face 14 a retaining appendage 44 visible in Figure 5, cooperating with a dedicated housing 46 present on an internal face 48 of the optical box 38.
- the periphery 20 of the screen facing the optical reflector 8 comprises one or more notches 50
- the optical reflector 8 and / or the optical box 38 also comprises one or more notches 50 in vis-à-vis the notch of the optical reflector, so as to allow the passage of an air flow between the internal face 48 of the optical box 38, the optical reflector 8 and the screen 12.
- This embodiment visible in Figure 6 promotes greater air circulation in the optical unit 40.
- the notches 50 are present at the level of the areas of the screen less illuminated by the light beam 6, for example at the level of the corners of the screen 12.
- the periphery 20 of the screen vis-à-vis the optical reflector 8 may include a riser 52 bearing against a wall 54 of the optical box 38, so as to ensure a greater retention of the screen 12 against the optical box 38.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2006293A FR3111412A1 (fr) | 2020-06-16 | 2020-06-16 | Module lumineux destiné à être monté dans un bloc optique pour véhicule automobile |
| PCT/FR2021/050797 WO2021255358A1 (fr) | 2020-06-16 | 2021-05-10 | Module lumineux destiné à être monté dans un bloc optique pour véhicule automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4165342A1 true EP4165342A1 (fr) | 2023-04-19 |
| EP4165342B1 EP4165342B1 (fr) | 2025-02-26 |
Family
ID=74859951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21732959.8A Active EP4165342B1 (fr) | 2020-06-16 | 2021-05-10 | Module lumineux destiné à être monté dans un bloc optique pour véhicule automobile |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4165342B1 (fr) |
| CN (1) | CN115702311A (fr) |
| FR (1) | FR3111412A1 (fr) |
| WO (1) | WO2021255358A1 (fr) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1259114A (fr) | 1968-04-16 | 1972-01-05 | ||
| JP4166439B2 (ja) * | 2001-02-05 | 2008-10-15 | 株式会社小糸製作所 | 灯具 |
| KR101114068B1 (ko) * | 2009-12-01 | 2012-02-22 | 기아자동차주식회사 | 차량용 헤드램프 |
| EP2428725B1 (fr) * | 2010-09-10 | 2019-11-20 | Koito Manufacturing Co., Ltd. | Phare de véhicule |
| CN201983151U (zh) * | 2010-12-10 | 2011-09-21 | 吴忠宪 | 车灯 |
| CN102175007B (zh) * | 2011-01-11 | 2013-01-23 | 重庆隆鑫机车有限公司 | 摩托车前大灯及其摩托车 |
| JP6096529B2 (ja) * | 2013-02-15 | 2017-03-15 | スタンレー電気株式会社 | 車両用灯具ユニット |
| WO2015076114A1 (fr) * | 2013-11-19 | 2015-05-28 | 株式会社小糸製作所 | Lampe de véhicule |
| CN103994386A (zh) * | 2014-05-29 | 2014-08-20 | 江苏迅驰汽车部件有限公司 | 一种汽车后尾灯 |
| DE102016205644B4 (de) * | 2016-04-06 | 2024-10-17 | Volkswagen Aktiengesellschaft | Beleuchtungsvorrichtung für ein Kraftfahrzeug |
| CN207112688U (zh) * | 2017-07-06 | 2018-03-16 | 上海小糸车灯有限公司 | 具有立体发光效果的车灯内配光镜 |
| US10838137B2 (en) * | 2017-08-29 | 2020-11-17 | Varroc Lighting Systems, s.r.o. | Lighting device with high efficiency and uniformity |
-
2020
- 2020-06-16 FR FR2006293A patent/FR3111412A1/fr not_active Withdrawn
-
2021
- 2021-05-10 CN CN202180042917.6A patent/CN115702311A/zh active Pending
- 2021-05-10 WO PCT/FR2021/050797 patent/WO2021255358A1/fr not_active Ceased
- 2021-05-10 EP EP21732959.8A patent/EP4165342B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021255358A1 (fr) | 2021-12-23 |
| EP4165342B1 (fr) | 2025-02-26 |
| FR3111412A1 (fr) | 2021-12-17 |
| CN115702311A (zh) | 2023-02-14 |
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