EP2336632A1 - Signalling device for a vehicle with 3D effect - Google Patents
Signalling device for a vehicle with 3D effect Download PDFInfo
- Publication number
- EP2336632A1 EP2336632A1 EP20100193490 EP10193490A EP2336632A1 EP 2336632 A1 EP2336632 A1 EP 2336632A1 EP 20100193490 EP20100193490 EP 20100193490 EP 10193490 A EP10193490 A EP 10193490A EP 2336632 A1 EP2336632 A1 EP 2336632A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen
- light
- cavity
- reflector
- signaling device
- 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
- 230000011664 signaling Effects 0.000 title claims description 32
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Images
Classifications
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- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
-
- 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
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
-
- 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
- F21S43/235—Light guides
- F21S43/242—Light guides characterised by the emission area
- F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
-
- 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
- F21S43/235—Light guides
- F21S43/247—Light guides with a single light source being coupled into the light guide
-
- 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
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
-
- 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
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/31—Optical layout 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
- F21S43/10—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
- F21S43/235—Light guides
-
- 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
-
- 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
- F21W2103/20—Direction indicator lights
-
- 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
- F21W2103/35—Brake lights
-
- 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
- F21Y2101/00—Point-like light sources
-
- 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
- F21Y2115/20—Electroluminescent [EL] light sources
Definitions
- the invention relates to a signaling device, in particular for a motor vehicle.
- a signaling device in particular for a motor vehicle.
- This is for example a traffic light, a blinker, arranged at the front or rear of the vehicle, or a position light or a brake light.
- a lantern comprising a cavity formed by a reflector and a screen disposed at a distance from the reflector.
- the screen has the particularity of being semi-reflective, that is to say that part of the light rays that meet it is reflected and another part is transmitted.
- the cavity has the particularity that one of the surfaces of the reflector and the screen which delimit the cavity is curved.
- a series of light-emitting diode-type light sources are disposed at the periphery of the reflector and oriented so as to emit light generally towards the screen.
- part of the light rays is directly transmitted and a part is reflected towards the reflector.
- the latter then reflects these rays towards the screen with an offset directed towards the center of the reflector.
- These rays reflected by the reflector meet the screen again.
- part of the rays is transmitted by the screen and a part is reflected towards the reflector and so on. It results from these multiple partial transmissions and partial reflections an optical effect of depth in three dimensions.
- the power of illumination or illumination of the light rays emitted gradually decreases as reflections in the cavity. This optical effect is interesting because it allows a customization of the lantern attracting the attention of other motorists.
- the lantern also allows the concealment of the lantern in a body element, such as a bumper or a motor vehicle wing. It also allows the realization of a signaling device of small thickness and small footprint compared to the effect of depth generated.
- the semi-reflective nature of the screen is obtained by the application of a metal covering which can give it a metallized appearance similar to that of a bodywork element.
- the teaching of this document however has a major disadvantage namely the treatment of the screen intended to make it semi-reflective.
- the metal layer applied on the screen will result in a portion of the rays from the light sources will be transmitted (not to mention the losses inherent in the screen material). The rate of reflection and transmission can vary and will be directly dependent on the application of the metal layer.
- the lantern equipped with a standard power light source may not fulfill the photometric conditions required by the legislation for a signaling function, and may also cause a difference in appearance between the left and right position lights of the vehicle.
- the object of the invention is to propose a signaling device that is simple to produce and inexpensive while being able to fulfill the legal photometric requirements.
- This measurement makes it possible to generate, with the light rays not meeting the partially reflective and partially transparent (that is to say semi-reflective) part of the screen, a luminous image capable of ensuring the photometric function of the device while enabling the another part (essentially the remaining part) of the light rays to undergo a partial transmission game (with loss) and partial reflection which will generate repeating images similar to the main image and of progressively smaller size.
- the invention thus makes it possible to very simply produce a first light image providing the signaling function from a photometric point of view, and a series of corresponding images with a 3D effect ensuring a customization of the device.
- the power level of the necessary light sources remains reasonable and the tolerances associated with the processing of the screen to make it semi-reflective can remain wide.
- 20 to 60% of the rays reaching the semi-reflective zone are reflected.
- the screen comprises a substantially transparent zone through which the second portion of the light rays passes.
- the transparency of the essentially transparent zone is such that at least 80% of said radii are transmitted.
- the essentially transparent zone reflects the rays less than the semi-reflective zone. Preferentially, less than 4% of the rays reaching this zone are reflected.
- the essentially transparent zone of the screen is at the right of at least a portion of the light rays penetrating the cavity. This is the simplest construction a priori of the invention.
- the screen comprises a partially reflecting coating on at least one of its surfaces, the zone essentially transparent said screen being devoid of said coating.
- a preferred mode is a method of masking the non-metallized portion of the screen prior to metallization.
- the metallization is carried out by evaporation under vacuum.
- Another advantageous embodiment consists in applying a coating to the screen and then removing this coating on the intended part. to be transparent, preferably by application of a laser beam.
- the screen is configured so as not to extend to the right of at least a portion of the light rays penetrating the cavity.
- the screen is smaller in size.
- the light rays penetrating the cavity are distributed around a surface so that the portion of said light rays which is partially reflected and transmitted by the screen and reflected by said reflector in said cavity is generally towards the center of the surface.
- the device comprises at least one light guide capable of transmitting the second portion of the light rays of one or more light sources through at least a portion of the cavity and so as to pass out of the cavity at the height of the screen out of the semi-reflective area.
- the use of a light guide gives a certain freedom and flexibility in the dimensioning of the device.
- the light guide comprises a generally loop-shaped portion, preferably closed, intended to be arranged around the reflector.
- the light source support is remote from the cavity and the device comprises means for guiding the light rays emitted by the light source to the cavity.
- the device is a vehicle signaling device, the configuration of the screen and light sources. being made so that said second part of the light rays makes it possible to satisfy the photometric conditions required for the realization of an automotive signaling function.
- FIG. figure 1 A signaling device 2 according to a first embodiment of the invention is illustrated in FIG. figure 1 .
- the signaling device 2 is intended to emit a light beam in a direction X to a space disposed above the device.
- This expression "above” is related to the orientation of the device in the figure and is to be interpreted in a relative manner because it depends on the orientation of the device when it is in operation.
- the device is generally mounted so as to emit its light beam in a generally horizontal direction directed towards the front or rear of the vehicle according to the mounting of the device at the front or rear of the vehicle. It should be noted, however, that other orientations can be envisaged depending on the signaling function of the device. This remark is valid for the various embodiments illustrated.
- the signaling device 2 comprises a housing 4 which itself comprises a support 16 for a series of point light sources 14. These light sources may be of the electroluminescence diode type or any other type of known light source. These point light sources 14 are distributed on the support 16 so as to form a general shape of rectangle. They are arranged so that their main axis of illumination is oriented approximately in the direction illustrated by the arrow of the figure 1 , namely the main direction of lighting.
- the device also comprises a reflector 10 disposed above the support 16, or between the support 16 and the space to which the device emits its light beam.
- the reflector comprises a series of orifices 12 arranged in line with the light sources 14 along their main illumination axis.
- the reflector has a reflective surface directed towards the space to be illuminated.
- the device 2 also comprises a screen 7 arranged above (according to the orientation of the figure 1 ) of the reflector 10, or between the reflector 10 and the space to be illuminated, at a distance from the reflector.
- the screen 7 and the reflector 10 form a cavity 5 delimited essentially by the reflective surface of the reflector 10 and the internal surface of the screen 7. This internal surface is, in this case embodiment, generally flat.
- the screen has a semi-reflective central portion 6 and a transparent peripheral portion 8.
- a portion of the light rays emitted by the light sources is transmitted directly to the space to be illuminated by this transparent part 8 of the screen 7 and another part, essentially the remaining part, is partially reflected and partially reflected by the semi-transparent part.
- reflective 6 of the screen 7 disposed near the transparent portion 8 of the screen.
- the reflected part then meets the reflective surface of the reflector 10 and is thus substantially totally reflected, some of these reflected rays will then be transmitted and others will be reflected again by the semi-reflective portion 6 of the screen, and thus right now.
- the rays transmitted by the transparent portion 8 undergo very little or no loss.
- the part of the rays that undergo the play of reflection and partial transmission will generate an optical effect of depth.
- This optical mechanism is illustrated in figure 1 , from the light source on the right side.
- the light rays emitted directly from the light source pass through the screen with very little loss. They are illustrated by the broken lines referenced 18.
- some of these rays meet the semi-reflecting portion 6 of the screen.
- a portion of the light rays 20 meeting the semi-reflecting portion preferably more than 4% of the rays meeting this surface, is reflected to the reflector by the screen. This reflected part is then totally or almost totally reflected towards the screen by the reflective surface.
- Reflector 10 is illustrated at figure 2 which is a sectional view along the AA axis of the figure 1 .
- the series of orifices 12 arranged in an outline generally corresponding to a rectangle.
- the light sources 14, in this example of the light-emitting diodes, are at the right of these orifices.
- the figure 3 which is an elevational view of the operative device illustrates the image of the rays emitted by the signaling device.
- the rays transmitted directly by the transparent part of the screen form points 24 according to an outer contour (delimited by the dashed lines). These rays provide the signaling function of the device from a photometric point of view. Indeed, they come directly from a large part, preferably more than 50%, rays emitted by light sources, and are transmitted with almost no loss.
- the rays transmitted by the semi-reflecting part form points of similar geometry but of smaller size and repeating towards the center of the device. These rays ensure the visual appearance and thus the signature function to the device giving it its individual character.
- the level of illumination provided by this part is substantially lower because of the semi-reflective nature of the lens through which they pass.
- the screen can be made of a commonly used transparent material such as certain plastics or glass.
- One of its surfaces, the outer or inner surface, is made semi-reflective by applying a typically partially reflective coating.
- the coating is usually a metal coating such as aluminum or a stainless metal applied by vapor deposition technique and under vacuum. Various coating application methods known to those skilled in the art can be used.
- the coating reflection rate is for example between 20% and 60%.
- the transparent portion 8 of the screen 7 is devoid of coating.
- a preferred mode for forming the transparent portion of the screen is to make a local removal of the coating previously applied to the screen, and this by applying a laser beam.
- a second embodiment of the invention is illustrated in Figures 4 to 6 . It differs from the first mode essentially in that a light guide 115 is used instead of the light source series of the first embodiment.
- a light source 114 is disposed near the light guide 115 so as to supply light rays.
- a single light source has been shown for simplicity of presentation of the invention. However, it is clear that it is conceivable to use several light sources according to various sizing parameters of the device.
- the light source or sources can be of different types: light emitting diode, conventional incandescent lamp, ...
- the light guide 115 has a diffusion ring disposed opposite a corresponding opening ring 112 formed in the reflector 110 The light guide 115 will then emit the light rays coming from the light source 114 into the cavity 105 in the direction of the screen 107.
- the ring-shaped opening at the reflector 100 is clearly visible at the figure 5 which is a sectional view along the BB axis of the figure 4 .
- the optical phenomena are similar to those of the first embodiment, with the difference that the image produced.
- the illumination image of the device is illustrated at figure 6 which is an elevation view of the device of the figure 4 when the latter is in operation. It can be observed that the light rays coming directly from the light guide form a continuous contour 124 of a level of illumination or illumination power capable of ensuring the photometric function of the device. This image 124 is reproduced several times by the contours 126 having a progressively smaller size towards the center of the device. These images 126 provide the signature or individual function of the device.
- a third embodiment is illustrated in Figures 7 and 8 . It differs from the second embodiment essentially in that the light guide 1015 is configured to protrude from the reflector 1010 and have beveled end surfaces.
- the light of the light source 1014 enters the light guide by its lower face.
- the guide having on its upper face a conical depression pointing downwards, the rays are reflected laterally in the thickness of the guide and propagates by internal reflection, to a beveled end surface. Reflecting on the bevelled surface, the rays are sent to the cavity and out of the light guide.
- the latter has no orifice or opening but is simply arranged on the light guide. The latter ensures the transmission of light from one or more light sources to the cavity.
- the light source (s) may be disposed at a distance from the cavity (1005) as long as the light guide transmits the light rays to the cavity.
- the optical phenomena are identical to those of the second embodiment.
- the illumination image is similar to that of the second embodiment. It is observed that the device according to the invention makes it possible to generate different image forms.
- FIGS. Figures 9 and 10 possible images are illustrated in FIGS. Figures 9 and 10 .
- the outer contour 24 is of a level of lighting power substantially greater than that of the inner contours 26.
- the arrangement of the light sources and / or the optical guide and the screen have have been made to generate an oval aspect repeating towards the center ( figure 9 ), a triangle aspect repeating towards the center ( figure 10 ).
- the shape of the signal 24, 124, 1024 is repeated several times approaching the center but with an intensity and a size that decreases towards the center, thus conferring an illusion of depth of the device .
- Each repetition 26, 126, 1026 is in the image of the appearance of the zone generating the shape of the signal 24, 124, 1024, thus also making it possible to reinforce the perceptibility of the signal sent.
- this signaling device can be a stop light.
- the device can be made in such a way that the light intensity of the sources is proportional to the intensity of the braking. In this case, depending on the intensity of braking we will have a quantity of multiple reflections more or lower. Thus the higher the braking, the more the patterns of the signal will be repeated towards the center and the repetition of the signal will have depth. Braking information is better transmitted to other drivers.
- This device can also be a position rear light or a turn signal.
- the light rays penetrating the cavity do not necessarily have to form a continuous contour and a closed contour.
- spot or concentrated beams at certain points of an outline make it possible to obtain the combination of effects according to the invention.
- the outline could be open in the shape of a U. It could also consist of a series of points of higher brightness connected by a continuous contour of lower brightness.
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Abstract
Description
L'invention a trait à un dispositif de signalisation notamment pour véhicule automobile. Il s'agit par exemple d'un feu de signalisation, d'un clignotant, disposé à l'avant ou à l'arrière du véhicule, ou bien un feu de position ou encore d'un feu stop.The invention relates to a signaling device, in particular for a motor vehicle. This is for example a traffic light, a blinker, arranged at the front or rear of the vehicle, or a position light or a brake light.
Plus particulièrement, il s'agit de dispositifs de signalisation générant un effet de profondeur en trois dimensions grâce à un dispositif optique particulier. Un tel dispositif est connu du document de brevet
L'invention a pour objectif de proposer un dispositif de signalisation simple à réaliser et de manière peu coûteuse tout en étant apte à remplir les exigences photométriques légales.The object of the invention is to propose a signaling device that is simple to produce and inexpensive while being able to fulfill the legal photometric requirements.
L'invention consiste en un dispositif de signalisation lumineuse, notamment pour véhicules automobiles, apte à illuminer un espace avec un axe principal d'illumination, comprenant:
- un réflecteur avec une surface réfléchissante orientée de sorte à faire face audit espace à illuminer;
- un écran disposé en face dudit réflecteur, entre ledit réflecteur et ledit espace à illuminer, ledit écran comprenant une zone semi-réfléchissante; ledit écran étant disposé à distance dudit réflecteur et formant avec ledit réflecteur une cavité dont au moins une des surfaces formée par ladite lentille ou ledit réflecteur est bombée;
- un support de source lumineuse configuré de manière à ce que les rayons lumineux de ladite source pénètrent ladite cavité selon une direction principale orientée vers ledit espace à illuminer, une partie desdits rayons lumineux rencontrant ladite zone semi-réfléchissante, certains de ces rayons étant transmis par ladite zone semi-réfléchissante et d'autres de ces rayons étant réfléchis par ladite zone semi-réfléchissante, puis par ledit réflecteur dans ladite cavité de manière à générer un effet visuel répétitif de profondeur;
- a reflector with a reflective surface oriented so as to face said space to be illuminated;
- a screen disposed opposite said reflector, between said reflector and said space to be illuminated, said screen comprising a semi-reflective zone; said screen being disposed at a distance from said reflector and forming with said reflector a cavity of which at least one of the surfaces formed by said lens or said reflector is curved;
- a light source support configured in such a way that the light rays of said source penetrate said cavity in a principal direction directed towards said space to be illuminated, a portion of said light rays meeting said semi-reflecting area, some of said rays being transmitted by said semi-reflecting zone and others of these rays being reflected by said semi-reflecting zone, then by said reflector in said cavity so as to generate a repetitive visual effect of depth;
Cette mesure permet de générer avec les rayons lumineux ne rencontrant pas la partie partiellement réflective et partiellement transparente (c'est-à-dire semi-réfléchissante) de l'écran une image lumineuse apte à assurer la fonction photométrique du dispositif tout en permettant à une autre partie (essentiellement la partie restante) des rayons lumineux de subir un jeu de transmission partielle (avec perte) et de réflexion partielle qui va générer des images en répétition similaires à l'image principale et de taille progressivement plus petite. L'invention permet ainsi de produire de manière très simple une première image lumineuse assurant la fonction de signalisation d'un point de vue photométrique, et une série d'images correspondantes avec un effet 3D assurant une personnalisation du dispositif. Le niveau de puissance des sources lumineuses nécessaire reste raisonnable et les tolérances liées au traitement de l'écran en vue de le rendre semi-réfléchissant peuvent rester larges.This measurement makes it possible to generate, with the light rays not meeting the partially reflective and partially transparent (that is to say semi-reflective) part of the screen, a luminous image capable of ensuring the photometric function of the device while enabling the another part (essentially the remaining part) of the light rays to undergo a partial transmission game (with loss) and partial reflection which will generate repeating images similar to the main image and of progressively smaller size. The invention thus makes it possible to very simply produce a first light image providing the signaling function from a photometric point of view, and a series of corresponding images with a 3D effect ensuring a customization of the device. The power level of the necessary light sources remains reasonable and the tolerances associated with the processing of the screen to make it semi-reflective can remain wide.
Selon un mode de réalisation, 20 à 60% des rayons atteignant la zone semi-réfléchissante sont réfléchis.According to one embodiment, 20 to 60% of the rays reaching the semi-reflective zone are reflected.
Selon un mode avantageux de l'invention, l'écran comprend une zone essentiellement transparente à travers de laquelle passe la deuxième partie des rayons lumineux.According to an advantageous embodiment of the invention, the screen comprises a substantially transparent zone through which the second portion of the light rays passes.
Selon un autre mode avantageux de l'invention, la transparence de la zone essentiellement transparente est telle qu'au moins 80% desdits rayons sont transmis. La zone essentiellement transparente réfléchit moins les rayons que la zone semi-réfléchissante. Préférentiellement, moins de 4% des rayons atteignant cette zone sont réfléchis.According to another advantageous embodiment of the invention, the transparency of the essentially transparent zone is such that at least 80% of said radii are transmitted. The essentially transparent zone reflects the rays less than the semi-reflective zone. Preferentially, less than 4% of the rays reaching this zone are reflected.
Selon un encore autre mode avantageux de l'invention, la zone essentiellement transparente de l'écran est au droit d'au moins une partie des rayons lumineux pénétrant la cavité. Il s'agit de la construction a priori la plus simple de l'invention.According to yet another advantageous embodiment of the invention, the essentially transparent zone of the screen is at the right of at least a portion of the light rays penetrating the cavity. This is the simplest construction a priori of the invention.
Selon un encore autre mode avantageux de l'invention, l'écran comprend un revêtement partiellement réfléchissant sur au moins une de ses surfaces, la zone essentiellement transparente dudit écran étant dépourvue dudit revêtement. Cette mesure est en effet assez simple à mettre en oeuvre. Un mode privilégié est un procédé consistant à masquer la partie non métallisée de l'écran avant métallisation. Préférentiellement, la métallisation est réalisée par évaporation sous vide.According to another advantageous embodiment of the invention, the screen comprises a partially reflecting coating on at least one of its surfaces, the zone essentially transparent said screen being devoid of said coating. This measure is indeed quite simple to implement. A preferred mode is a method of masking the non-metallized portion of the screen prior to metallization. Preferably, the metallization is carried out by evaporation under vacuum.
Un autre mode avantageux de réalisation consiste à appliquer un revêtement à l'écran et à retirer ensuite ce revêtement sur la partie destinée. à être transparente, préférentiellement par application d'un rayon laser.Another advantageous embodiment consists in applying a coating to the screen and then removing this coating on the intended part. to be transparent, preferably by application of a laser beam.
Selon un encore autre mode avantageux de l'invention, l'écran est configuré de sorte à ne pas s'étendre au droit d'au moins une partie des rayons lumineux pénétrant la cavité. Dans ce cas, l'écran est de taille plus réduite. Un tel design peut s'avérer encore plus simple et moins coûteux.According to yet another advantageous embodiment of the invention, the screen is configured so as not to extend to the right of at least a portion of the light rays penetrating the cavity. In this case, the screen is smaller in size. Such a design can be even simpler and less expensive.
Selon un encore autre mode avantageux de l'invention, les rayons lumineux pénétrant la cavité sont répartis autour d'une surface de manière à ce que la partie desdits rayons lumineux qui est partiellement réfléchie et transmise par l'écran et réfléchie par ledit réflecteur dans ladite cavité, le soit généralement vers le centre de la surface.According to yet another advantageous embodiment of the invention, the light rays penetrating the cavity are distributed around a surface so that the portion of said light rays which is partially reflected and transmitted by the screen and reflected by said reflector in said cavity is generally towards the center of the surface.
Selon un encore autre mode avantageux de l'invention, le dispositif comprend au moins un guide de lumière apte à transmettre la deuxième partie des rayons lumineux d'une ou plusieurs sources lumineuses à travers au moins une partie de la cavité et de manière à passer hors de la cavité à la hauteur de l'écran hors de la zone semi-réfléchissante. L'utilisation d'un guide de lumière confère une certaine liberté et souplesse au niveau du dimensionnement du dispositif.According to yet another advantageous embodiment of the invention, the device comprises at least one light guide capable of transmitting the second portion of the light rays of one or more light sources through at least a portion of the cavity and so as to pass out of the cavity at the height of the screen out of the semi-reflective area. The use of a light guide gives a certain freedom and flexibility in the dimensioning of the device.
Selon un encore autre mode avantageux de l'invention, le guide de lumière comprend une partie en forme générale de boucle, préférentiellement fermée, destinée à être disposée autour du réflecteur.According to another advantageous embodiment of the invention, the light guide comprises a generally loop-shaped portion, preferably closed, intended to be arranged around the reflector.
Selon un encore autre mode avantageux de l'invention, le support de source lumineuse est à distance de la cavité et le dispositif comprend des moyens de guidage des rayons lumineux émis par la source lumineuse jusqu'à la cavité.According to yet another advantageous embodiment of the invention, the light source support is remote from the cavity and the device comprises means for guiding the light rays emitted by the light source to the cavity.
Selon un encore autre mode avantageux de l'invention, le dispositif est un dispositif de signalisation de véhicule, la configuration de l'écran et des sources lumineuses étant réalisée de manière à ce que ladite deuxième partie des rayons lumineux permette de satisfaire les conditions de photométrie requises pour la réalisation d'une fonction de signalisation automobile.According to yet another advantageous embodiment of the invention, the device is a vehicle signaling device, the configuration of the screen and light sources. being made so that said second part of the light rays makes it possible to satisfy the photometric conditions required for the realization of an automotive signaling function.
D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :
- La
figure 1 est une représentation schématique en coupe d'un dispositif de signalisation selon un premier mode de réalisation de l'invention. - La
figure 2 est une vue en coupe selon l'axe A-A de lafigure 1 . - La
figure 3 est une vue en élévation du dispositif de lafigure 1 lorsqu'il est sous tension, illustrant l'aspect éclairé de ce dispositif de signalisation et l'effet optique associé. - La
figure 4 est une représentation schématique en coupe d'un dispositif de signalisation selon un deuxième mode de réalisation de l'invention. - La
figure 5 est une vue en coupe selon l'axe B-B de lafigure 4 . - La
figure 6 est une vue en élévation du dispositif de lafigure 4 lorsqu'il est sous tension, illustrant l'aspect éclairé de ce dispositif de signalisation et l'effet optique associé. - La
figure 7 est une représentation schématique en coupe d'un dispositif de signalisation selon un troisième mode de réalisation de l'invention. - La
figure 8 est une vue en élévation du dispositif de lafigure 1 lorsqu'il est sous tension, illustrant l'aspect éclairé de ce dispositif de signalisation et l'effet optique associé. - La
figure 9 illustre une deuxième alternative de forme de l'aspect éclairé de ce dispositif de signalisation et de l'effet optique associé. - La
figure 10 illustre une troisième alternative de forme de l'aspect éclairé de ce dispositif de signalisation et de l'effet optique associé.
- The
figure 1 is a schematic representation in section of a signaling device according to a first embodiment of the invention. - The
figure 2 is a sectional view along the axis AA of thefigure 1 . - The
figure 3 is an elevation view of the device of thefigure 1 when energized, illustrating the illuminated appearance of this signaling device and the associated optical effect. - The
figure 4 is a schematic representation in section of a signaling device according to a second embodiment of the invention. - The
figure 5 is a sectional view along the axis BB of thefigure 4 . - The
figure 6 is an elevation view of the device of thefigure 4 when energized, illustrating the illuminated appearance of this signaling device and the associated optical effect. - The
figure 7 is a schematic representation in section of a signaling device according to a third embodiment of the invention. - The
figure 8 is an elevation view of the device of thefigure 1 when energized, illustrating the illuminated appearance of this signaling device and the associated optical effect. - The
figure 9 illustrates a second alternative form of the illuminated aspect of this signaling device and the associated optical effect. - The
figure 10 illustrates a third alternative form of the illuminated aspect of this signaling device and the associated optical effect.
Différents mode de réalisation sont illustrés aux figures de cette demande et qui vont être décrites ci-après. Ces illustrations sont schématiques et volontairement simplifiées pour des raisons de clarté d'exposé de l'invention.Various embodiments are illustrated in the figures of this application and will be described below. These illustrations are schematic and deliberately simplified for the sake of clarity of the invention.
Un dispositif de signalisation 2 selon un premier mode de réalisation de l'invention est illustré à la
Le dispositif de signalisation 2 comprend un boîtier 4 qui lui-même comprend un support 16 pour une série de sources lumineuses ponctuelles 14. Ces sources lumineuses peuvent être du type diode à électroluminescence ou tout autre type de source lumineuse connu. Ces sources lumineuses ponctuelles 14 sont réparties sur le support 16 de manière à former une forme générale de rectangle. Elles sont disposées de sorte à ce que leur axe principal d'éclairage soit orienté approximativement selon la direction illustrée par la flèche de la
Le dispositif comprend également un réflecteur 10 disposé au dessus du support 16, ou encore entre le support 16 et l'espace vers lequel le dispositif émet son faisceau lumineux. Le réflecteur comprend une série d'orifices 12 disposés au droit des sources lumineuses 14 selon leur axe principal d'éclairage. Le réflecteur présente une surface réfléchissante dirigée vers l'espace à illuminer.The device also comprises a
Le dispositif 2 comprend également un écran 7 disposé au dessus (selon l'orientation de la
Une partie des rayons lumineux émis par les sources lumineuses est transmise directement vers l'espace à illuminer par cette partie transparente 8 de l'écran 7 et une autre partie, essentiellement la partie restante, est partiellement réfléchie et partiellement réfléchie par la partie semi-réfléchissante 6 de l'écran 7 disposée à proximité de la partie transparente 8 de l'écran. La partie réfléchie rencontre ensuite la surface réfléchissante du réflecteur 10 et est ainsi pratiquement totalement réfléchie, certains de ces rayons réfléchis vont ensuite être transmis et d'autres vont être réfléchis à nouveau par la partie semi-réfléchissante 6 de l'écran, et ainsi de suite. Il résulte de ce mécanisme que les rayons transmis par la partie transparente 8 subissent très peu de perte, voire aucune. La partie des rayons qui subit le jeu de réflexion et transmission partielles va générer un effet optique de profondeur.A portion of the light rays emitted by the light sources is transmitted directly to the space to be illuminated by this
Ce mécanisme optique est illustré à la
Le réflecteur 10 est illustré à la
La
Plus on s'approche du centre du dispositif, plus les rayons ont subi de multiples réflexions entre l'écran et le réflecteur avant de sortir de l'écran. Leur quantité est également moindre. Il s'ensuit que l'aspect produit par le contour périphérique de l'écran, ici un ensemble de points 24 répartis en cercle, est répété plusieurs fois en s'approchant du centre mais avec une intensité et une taille qui va en diminuant vers le centre, conférant ainsi une illusion de profondeur du dispositif. Chaque répétition 26 est à l'image de l'aspect de la zone générant la fonction optique, ici les points 24. Cela permet en outre de renforcer la perceptibilité du signal envoyé. Les autres conducteurs réagiront ainsi plus rapidement au signal envoyé.The closer you get to the center of the device, the more the rays have undergone multiple reflections between the screen and the reflector before getting out of the screen. Their quantity is also less. It follows that the appearance produced by the peripheral contour of the screen, here a set of
L'écran peut être réalisé avec un matériau transparent couramment utilisé comme par exemple certains plastiques ou du verre. Une des ses surfaces, la surfaces externe ou interne, est rendue semi-réfléchissante par application d'un revêtement typiquement partiellement réfléchissant. Le revêtement est habituellement un revêtement métallique comme de l'aluminium ou un métal inoxydable appliqué par technique de déposition en phase vapeur et sous vide. Diverses méthodes d'application du revêtement connues de l'homme de métier peuvent être utilisées. Le taux de réflexion du revêtement est par exemple compris entre 20% et 60%. La partie transparente 8 de l'écran 7 est dépourvue de revêtement.The screen can be made of a commonly used transparent material such as certain plastics or glass. One of its surfaces, the outer or inner surface, is made semi-reflective by applying a typically partially reflective coating. The coating is usually a metal coating such as aluminum or a stainless metal applied by vapor deposition technique and under vacuum. Various coating application methods known to those skilled in the art can be used. The coating reflection rate is for example between 20% and 60%. The
Un mode privilégié pour former la partie transparente de l'écran est de procéder à un enlèvement local du revêtement préalablement appliqué sur l'écran, et ce par application d'un rayon laser.A preferred mode for forming the transparent portion of the screen is to make a local removal of the coating previously applied to the screen, and this by applying a laser beam.
Un deuxième mode de réalisation de l'invention est illustré aux
L'ouverture en forme d'anneau au niveau du réflecteur 100 est bien visible à la
Les phénomènes optiques sont similaires à ceux du premier mode de réalisation, à la différence près de l'image produite. L'image d'illumination du dispositif est illustrée à la
Un troisième mode de réalisation est illustré aux
Les phénomènes optiques sont identiques à ceux du deuxième mode de réalisation. L'image d'illumination est similaire à celle du deuxième mode de réalisation. On observe que le dispositif selon l'invention permet de générer différentes formes d'image.The optical phenomena are identical to those of the second embodiment. The illumination image is similar to that of the second embodiment. It is observed that the device according to the invention makes it possible to generate different image forms.
Toujours selon le principe de l'invention, des images possibles sont illustrées aux
Dans les différents modes de réalisation illustrés, la forme du signal 24, 124, 1024 se répète plusieurs fois en s'approchant du centre mais avec une intensité et une taille qui va en diminuant vers le centre, conférant ainsi une illusion de profondeur du dispositif. Chaque répétition 26, 126, 1026, est à l'image de l'aspect de la zone générant la forme du signal 24, 124, 1024, permettant ainsi également de renforcer la perceptibilité du signal envoyé.In the various embodiments illustrated, the shape of the
Selon une variante de réalisation, ce dispositif de signalisation peut être un feu stop. Avantageusement, le dispositif peut être réalisé de manière à ce que l'intensité lumineuse des sources soit proportionnelle à l'intensité du freinage. Dans ce cas, selon l'intensité du freinage on aura une quantité de réflexions multiples plus ou moins élevées. Ainsi plus le freinage sera élevé, plus les motifs du signal seront répétés vers le centre et plus la répétition du signal aura de profondeur. L'information de freinage est ainsi mieux transmise aux autres conducteurs.According to an alternative embodiment, this signaling device can be a stop light. Advantageously, the device can be made in such a way that the light intensity of the sources is proportional to the intensity of the braking. In this case, depending on the intensity of braking we will have a quantity of multiple reflections more or lower. Thus the higher the braking, the more the patterns of the signal will be repeated towards the center and the repetition of the signal will have depth. Braking information is better transmitted to other drivers.
Ce dispositif peut également être un feu arrière de position ou un clignotant.This device can also be a position rear light or a turn signal.
De manière générale, il est à remarquer qu'il est tout-à-fait envisageable de remplacer la partie transparente de l'écran par une absence de matière de manière à assurer une transmission avec un minimum de perte. En tout état de cause, le principe de l'invention fonctionnera pareillement avec une absence de matériau de l'écran au droit des rayons lumineux pénétrant la cavité. Similairement, il est tout-à-fait envisageable de prévoir un matériau transparent distinct de celui de l'écran au droit des rayons lumineux pénétrant la cavité.In general, it should be noted that it is quite possible to replace the transparent part of the screen by a lack of material so as to ensure a transmission with a minimum of loss. In any case, the principle of the invention will work similarly with an absence of screen material to the right of the light rays penetrating the cavity. Similarly, it is quite possible to provide a transparent material distinct from that of the screen to the right of the light rays penetrating the cavity.
De manière générale, il est également à remarquer que divers types de guide lumière peuvent être mis en oeuvre afin d'amener les rayons lumineux d'une ou plusieurs sources lumineuses vers la cavité. Le deuxième et le troisième mode de réalisation sont purement exemplatifs et de nombreuses variantes sont possibles.In general, it should also be noted that various types of light guide can be used to bring the light rays of one or more light sources to the cavity. The second and third embodiments are purely illustrative and many variations are possible.
De manière générale, il est également à remarquer que les rayons lumineux pénétrant la cavité ne doivent pas nécessairement former un contour continu et ni un contour fermé. En effet, des faisceaux ponctuels ou concentrés à certain point d'un contour permettent d'obtenir la combinaison d'effets selon l'invention. A titre d'exemple, le contour pourrait être ouvert en forme de U. Il pourrait également être constitué d'une série de points de plus forte luminosité reliés par un contour continu de plus faible luminosité.In general, it should also be noted that the light rays penetrating the cavity do not necessarily have to form a continuous contour and a closed contour. Indeed, spot or concentrated beams at certain points of an outline make it possible to obtain the combination of effects according to the invention. For example, the outline could be open in the shape of a U. It could also consist of a series of points of higher brightness connected by a continuous contour of lower brightness.
Claims (11)
caractérisé en ce que
characterized in that
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR0959286A FR2954457B1 (en) | 2009-12-21 | 2009-12-21 | SIGNALING DEVICE FOR VEHICLE WITH 3D OPTICAL EFFECT |
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EP2336632A1 true EP2336632A1 (en) | 2011-06-22 |
EP2336632B1 EP2336632B1 (en) | 2015-01-21 |
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EP20100193490 Active EP2336632B1 (en) | 2009-12-21 | 2010-12-02 | Signalling device for a vehicle with 3D effect |
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US (1) | US8475020B2 (en) |
EP (1) | EP2336632B1 (en) |
JP (1) | JP5902387B2 (en) |
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FR (1) | FR2954457B1 (en) |
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EP2518392A3 (en) * | 2011-04-29 | 2013-04-10 | Valeo Iluminacion, S.A. | Signalling device with stop and position functions using a light guide and generating a 3D effect |
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FR3035183A1 (en) * | 2015-04-17 | 2016-10-21 | Valeo Vision | DEVICE FOR LIGHTING OR LIGHT SIGNALING WITH DEPTH EFFECT |
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DE102016117969A1 (en) | 2016-09-23 | 2018-03-29 | Carl Zeiss Jena Gmbh | Lighting device for vehicles |
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WO2018054985A1 (en) | 2016-09-23 | 2018-03-29 | Carl Zeiss Jena Gmbh | Lighting device for vehicles |
US10816155B2 (en) | 2016-09-23 | 2020-10-27 | Carl Zeiss Jena Gmbh | Lighting device for a vehicle |
DE102016117969B4 (en) | 2016-09-23 | 2022-09-22 | Carl Zeiss Jena Gmbh | Lighting device for vehicles |
US11537078B2 (en) | 2016-09-23 | 2022-12-27 | Carl Zeiss Jena Gmbh | Lighting device for vehicles |
WO2019067882A1 (en) | 2017-09-29 | 2019-04-04 | Flex-N-Gate Advanced Product Development, Llc | Reflector lamp |
EP3687857A4 (en) * | 2017-09-29 | 2020-10-14 | Flex-N-gate Advanced Product Development, LLC | Reflector lamp |
Also Published As
Publication number | Publication date |
---|---|
JP5902387B2 (en) | 2016-04-13 |
US20110149585A1 (en) | 2011-06-23 |
US8475020B2 (en) | 2013-07-02 |
EP2336632B1 (en) | 2015-01-21 |
CN102121655A (en) | 2011-07-13 |
FR2954457B1 (en) | 2014-08-22 |
JP2011146376A (en) | 2011-07-28 |
CN102121655B (en) | 2015-08-05 |
FR2954457A1 (en) | 2011-06-24 |
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