WO2024094939A1 - Dispositif d'éclairage et/ou de signalisation de véhicule automobile comportant un écran thermique - Google Patents
Dispositif d'éclairage et/ou de signalisation de véhicule automobile comportant un écran thermique Download PDFInfo
- Publication number
- WO2024094939A1 WO2024094939A1 PCT/FR2023/051510 FR2023051510W WO2024094939A1 WO 2024094939 A1 WO2024094939 A1 WO 2024094939A1 FR 2023051510 W FR2023051510 W FR 2023051510W WO 2024094939 A1 WO2024094939 A1 WO 2024094939A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- boi
- des
- etr
- plastic material
- housing
- 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.)
- Ceased
Links
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
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/30—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating rear of vehicle, e.g. by means of reflecting surfaces
- B60Q1/303—Rear fog lamps
-
- 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
- B60Q1/0029—Spatial arrangement
- B60Q1/0041—Spatial arrangement of several lamps in relation to each other
-
- 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
-
- 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
- F21S45/10—Protection of lighting devices
-
- 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
- F21W2103/40—Rear fog lights
Definitions
- Lighting and/or signaling device for a motor vehicle comprising a thermal screen
- the invention generally relates to lighting and/or signaling devices for motor vehicles and is more particularly interested in a lighting and/or signaling device for a motor vehicle comprising a thermal screen.
- a lighting and/or signaling device for a motor vehicle comprises a housing closed by an external lens or window.
- the box generally contains several light sources and their associated parabolas, arranged at the bottom of the box to respectively provide the lighting and/or signaling functions expected of a motor vehicle light, in particular a motor vehicle rear light.
- halogen incandescent bulbs more simply referred to as halogen bulbs, or even halogen lamps, which release heat at high temperatures and which coexist with other light sources arranged at proximity to each other in the box.
- the size of the upper, horizontal wall which extends the upper part of the parabola is adapted to the material used.
- This wall generally made integral with the housing, in addition to its optical function, is also used to delimit the lighting and/or signaling function and create a separation with another adjacent lighting and/or signaling function in the housing sharing the interior space of the housing.
- Each of the functions is housed in a cavity of reduced volume inside the case which, itself, is generally of limited size.
- a halogen bulb operates at high temperatures which can reach temperatures of around 200 C° (by radiation and convection) in certain lighting functions such as the fog light function, even more so if the function lighting is confined in a small space. It is therefore necessary to adapt the type of material used to make the case, and therefore the wall, in order to withstand these high temperatures.
- ABS Acrylonitrile Butadiene Styrene
- PC/ABS Polycarbonate/Acrylonitrile Butadiene Styrene
- PC Polycarbonate
- PC-HT Heat Resistant Polycarbonate
- the invention has as its first object a lighting and/or signaling device for a motor vehicle, comprising a housing obtained after injection molding of a first plastic material; said housing being open towards the outside and hermetically closed by a glass, and comprising at least first and second adjacent cavities open towards the outside and superimposed vertically defining respectively upper and lower cavities when the device is mounted on the vehicle; said device further comprising a light source, emitting heat, confined in the lower cavity, and a wall made of a second plastic material resistant to the heat released by the light source, attached and held fixedly between the upper cavities and lower so as to define a separation wall between the upper and lower cavities forming a thermal shield against the heat released by the light source.
- the heat shield when it is attached to the housing materializes, respectively, the lower and upper faces of the upper and lower cavities by integrating into the style of the housing.
- the housing comprises grooves cooperating respectively with ribs arranged on the edges of the screen ensuring the alignment of the screen with the housing during the assembly of the screen in the housing and its maintenance in the case, and fixing means arranged respectively in the bottom of the case and on one edge of the screen, in contact with the bottom of the case, cooperating with each other to fix the screen in the case.
- the housing comprises a second lower cavity separated laterally from the first lower cavity by a common partition, and containing another light source emitting heat, and in which the heat shield covers the two cavities lower by resting on the common partition.
- the first plastic material is a plastic material not resistant to high temperatures and the second plastic material is a plastic material resistant to high temperatures.
- the first plastic material is chosen from ABS, or PC/ABS plastic materials and the second plastic material is chosen from PC or PC-HT plastic materials.
- the light source(s) emitting heat at high temperature are halogen bulbs.
- the second object of the present invention is a motor vehicle rear light comprising at least one lighting and/or signaling device as described above.
- the third object of the present invention is a motor vehicle comprising at least one lighting and/or signaling device as described above.
- the fourth object of the present invention is a heat shield for a lighting and/or signaling device as described above, produced separately from the housing of the device by injection molding of a plastic material resistant to the heat released by a halogen bulb.
- FIG.1 illustrates a front view of a rear light of a motor vehicle comprising a lighting and/or signaling device according to the invention
- FIG.2 illustrates a front view of the housing, alone, of the lighting and/or signaling device according to the invention
- FIG.3 illustrates, in a sectional view along the section axis III-III of Figure 1, the lighting and/or signaling device according to the invention
- FIG.4 illustrates a perspective view of the lighting and/or signaling device according to the invention.
- FIG.5 illustrates a heat shield intended to be attached to the housing of the lighting and/or signaling device according to the invention.
- the orthonormal reference XYZ to identify the directions of extension of the lighting and/or signaling device as mounted on the vehicle and the associated relative notions, including a direction longitudinal (along X), a transverse direction (along Y) and a vertical direction (along Z).
- the longitudinal direction driver in the vehicle driving station, and the vertical direction Z defines the extension of the vehicle in elevation from its rolling plane on the ground. Consequently, the relative notions front and rear are identified longitudinally, the lateral notion and the relative notions right and left are identified transversely, the notions like superior and inferior or other related relative notions like bottom and top, ... are defined vertically by in relation to the rolling plan of the vehicle on the ground.
- the objective of the present invention is to provide a multifunction rear light comprising at least one lighting and/or signaling device providing several lighting and/or signaling functions, at controlled cost.
- the present invention consists of adding a heat shield resistant to high temperatures in the housing by optimizing its integration into the housing to respect both the style and the perceived quality with a cost remaining compatible with a rear light of 'entry level.
- Figure 1 illustrates an example of a FAR rear light of a VHL motor vehicle as mounted on a VHL motor vehicle, seen by an observer placed at the rear of the VHL vehicle, facing the FAR light (front view).
- the FAR light comprises a lighting and/or signaling device according to the DES invention which provides various light functions and which comprises a BOI housing, open to the outside, and which is hermetically closed by a GLA glass.
- a light, and in particular a rear light comprises several lighting and/or signaling functions using bulbs, such as a flashing light function, a reversing light, a brake light, a fog light, etc.
- the GLA glass allows a glimpse through transparency of the bulbs of the lighting and/or signaling functions and the bottom of the case which will be described below, with reference to Figure 2, 3 and 4.
- Figure 2 illustrates the BOI lighting and/or signaling box DES, shown alone, that is to say without the GLA glass closing the BOI box and without the light sources (bulbs) contained in the BOI box, illustrated in Figures 3 and 4 described below.
- the BOI housing is obtained after injection molding of an ABS type plastic material not intended to withstand high temperatures and which is chosen here for its cost which is lower compared to other types of plastic material supporting high temperatures. high temperatures.
- the BOI box also acts here as a mask for the sake of saving parts and materials and therefore cost.
- the BOI box is shaped to define several cavities, five cavities CAV1 -CAV5 in the example considered, arranged in the bottom of the FDB box.
- the CAV1 -CAV5 cavities extend over the entire bottom of the FDB box and are delimited, respectively, by lateral CLS separation partitions extending in a generally vertical direction (along Z) and upper and lower partitions, substantially horizontal, extending in a general direction (along Y), coming from the material with the BOI box and extending transversely from the bottom of the FDB box towards the front of the BOI box up to the GLA closing glass of the BOI box when the latter closes the BOL box
- the bottom of the box FDB also forms the bottom faces FDC ( Figure 3) of each cavity CAV1 - CAV5 with the shape of a parabola, or portion of a parabola, to define a reflection surface for the light emitted by the sources of SOL light (figures 3 and 4).
- CAV1 -CAV5 cavities Some of these cavities and in particular the adjacent CAV1 and CAV2 cavities are superimposed vertically on one another and share one or more CLS separation partitions.
- the lower CAV2 cavity contains a HAL halogen bulb (figures 3 and 4).
- the dimensioning of the CAV1 -CAV5 cavities responds to the size, the shape of the FAR light, the number of functions provided by the DES lighting and/or signaling device and the type of function.
- the dimensioning (the size) of the CAV1 -CAV5 cavities is strongly constrained, leading to reduced heights for some of these CAV1 -CAV5 cavities, as is particularly the case for the lower cavity CAV2 containing the fire function. anti-fog.
- the HAL halogen bulb which is the SOL lighting source for this function, is therefore confined inside a CAV2 cavity with reduced height.
- the solution implemented by the present invention consists of making the horizontal CLS separation partition, separating the upper and lower cavities, respectively CAV1 and CAV2, separately from the BOI housing, from a material resistant to high temperatures, then return it to the BOI box before closing the BOI box with the GLA glass.
- the CLS separation wall is therefore an ETR added wall which is obtained by molding like the BOI box but from a material resistant to high temperatures.
- the ETR added wall behaves like a heat shield with respect to the upper cavity CAV1. It has the general shape of a horizontal plate (when the BOI box is mounted in the VHL vehicle) whose surface is noticeably moved.
- the ETR heat shield when it is attached to the BOI housing, materializes, respectively, the lower and upper faces of the upper and lower cavities CAV1, CAV2.
- two adjacent lower cavities CAV2 and CAV3 are arranged in the BOI box containing each a light source SOL, HAL emitting heat at high temperature and confined in their respective cavities CAV2, CAV3. They are separated laterally from each other by a common, vertical partition CLV.
- the two lower cavities CAV2 and CAV3 share the same heat shield ETR which is positioned and maintained above the two lower cavities CAV2 and CAV3 on the one hand, by the common partition CLV and, on the other hand, on the other hand, by a lateral rib NRV (figures 4 and 5) of the ETR screen cooperating with a groove GRG of the BOL housing
- the other constraints added to the cost and to be respected by the ETR thermal screen are the style and the perceived quality.
- the ETR heat shield must assemble without play in the BOI box and visually integrate optimally into the style of the BOL box
- the upper face of the ETR screen is covered with a metallized coating supporting a decorative MOT pattern in the same style as that of the rest of the BOI box, in the shape of gadroons as in the example described.
- the ETR screen extends transversely (along X) relative to the bottom of the FDB housing between the upper and lower cavities CAV1 and CAV2, from the bottom of the FDB box towards the GLA glass by supporting on the vertical side partitions CLV of the BOI box (figure 4) and on an interior wall PGL of the GLA glass forming a RED step, once the GLA glass fixed on the BOL box
- the ETR screen has two NRV ribs arranged respectively on the right lateral edge BLA of the ETR screen and under the ETR screen while being substantially centered under the ETR screen; the two ribs NRV extending transversely (along X) relative to the front edge BAV of the ETR screen.
- the BOI housing comprises ( Figure 4) GRG grooves cooperating respectively with the NRV ribs of the ETR screen ensuring alignment of the ETR screen with the BOI housing during assembly of the ETR screen in the BOI housing then maintaining it in the box BOL
- Means for fixing the ETR screen to the bottom of the box FDB comprise two pairs of clipping tabs CLP, arranged (figure 5) on the rear edge BAR of the ETR screen, cooperating with two FNT slots provided in the bottom of the FDB box (figures 3 and 4).
- the profile of the rear edge BAR of the ETR screen is shaped to optimally match, without play, the bottom of the FDB box when the ETR screen is fixed in the BOL box
- the profile of the front edge BAV of the ETR screen (figure 5) is shaped to match the curve of the interior wall of the glass PGL (figure 3).
- a support stop BAP is fitted on the front edge BAV of the ETR screen (figure 5) to rest against the step RED of the interior wall of the glass PGL (figure 3).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23793918.6A EP4612021A1 (fr) | 2022-11-03 | 2023-09-29 | Dispositif d'éclairage et/ou de signalisation de véhicule automobile comportant un écran thermique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2211442A FR3141754B1 (fr) | 2022-11-03 | 2022-11-03 | Dispositif d’éclairage et/ou de signalisation de véhicule automobile comportant un écran thermique |
| FRFR2211442 | 2022-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024094939A1 true WO2024094939A1 (fr) | 2024-05-10 |
Family
ID=85037158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/051510 Ceased WO2024094939A1 (fr) | 2022-11-03 | 2023-09-29 | Dispositif d'éclairage et/ou de signalisation de véhicule automobile comportant un écran thermique |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4612021A1 (fr) |
| FR (1) | FR3141754B1 (fr) |
| WO (1) | WO2024094939A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2211442A1 (fr) | 1972-12-22 | 1974-07-19 | Atlantic Richfield Co | |
| EP0713760A1 (fr) * | 1994-11-23 | 1996-05-29 | Valeo Vision | Procédé de fabrication d'un socle de feu de signalisation pour véhicule et feu de signalisation fabriqué par ce procédé |
| EP1882881A1 (fr) * | 2006-07-24 | 2008-01-30 | Peugeot Citroën Automobiles S.A. | Dispositif d'éclairage et/ou de signalisation multifonctions à protection thermique pour véhicule |
| FR2966558A1 (fr) * | 2010-10-21 | 2012-04-27 | Peugeot Citroen Automobiles Sa | Bloc optique de vehicule a fonction d'eclairage integrant une partie au moins d'une autre fonction d'eclairage dans une partie aval |
| EP2956709B1 (fr) * | 2013-02-15 | 2019-08-14 | PSA Automobiles SA | Écran multifonction pour un bloc optique multifonction de véhicule |
| EP3344916B1 (fr) * | 2015-09-03 | 2019-10-30 | Psa Automobiles S.A. | Dispositif de signalisation lumineuse d'un vehicule automobile |
-
2022
- 2022-11-03 FR FR2211442A patent/FR3141754B1/fr active Active
-
2023
- 2023-09-29 WO PCT/FR2023/051510 patent/WO2024094939A1/fr not_active Ceased
- 2023-09-29 EP EP23793918.6A patent/EP4612021A1/fr active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2211442A1 (fr) | 1972-12-22 | 1974-07-19 | Atlantic Richfield Co | |
| EP0713760A1 (fr) * | 1994-11-23 | 1996-05-29 | Valeo Vision | Procédé de fabrication d'un socle de feu de signalisation pour véhicule et feu de signalisation fabriqué par ce procédé |
| EP1882881A1 (fr) * | 2006-07-24 | 2008-01-30 | Peugeot Citroën Automobiles S.A. | Dispositif d'éclairage et/ou de signalisation multifonctions à protection thermique pour véhicule |
| FR2966558A1 (fr) * | 2010-10-21 | 2012-04-27 | Peugeot Citroen Automobiles Sa | Bloc optique de vehicule a fonction d'eclairage integrant une partie au moins d'une autre fonction d'eclairage dans une partie aval |
| EP2956709B1 (fr) * | 2013-02-15 | 2019-08-14 | PSA Automobiles SA | Écran multifonction pour un bloc optique multifonction de véhicule |
| EP3344916B1 (fr) * | 2015-09-03 | 2019-10-30 | Psa Automobiles S.A. | Dispositif de signalisation lumineuse d'un vehicule automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3141754A1 (fr) | 2024-05-10 |
| EP4612021A1 (fr) | 2025-09-10 |
| FR3141754B1 (fr) | 2025-03-07 |
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