EP2770247B1 - Phare de véhicule automobile ayant une apparence lumineuse claire homogène - Google Patents

Phare de véhicule automobile ayant une apparence lumineuse claire homogène Download PDF

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Publication number
EP2770247B1
EP2770247B1 EP14155174.7A EP14155174A EP2770247B1 EP 2770247 B1 EP2770247 B1 EP 2770247B1 EP 14155174 A EP14155174 A EP 14155174A EP 2770247 B1 EP2770247 B1 EP 2770247B1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
light source
diffuse reflection
reflection surface
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.)
Active
Application number
EP14155174.7A
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German (de)
English (en)
Other versions
EP2770247A3 (fr
EP2770247A2 (fr
Inventor
Hubert Zwick
Hermann Kellermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2770247A2 publication Critical patent/EP2770247A2/fr
Publication of EP2770247A3 publication Critical patent/EP2770247A3/fr
Application granted granted Critical
Publication of EP2770247B1 publication Critical patent/EP2770247B1/fr
Active legal-status Critical Current
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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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/155—Surface emitters, e.g. organic light emitting diodes [OLED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • 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]
    • F21S43/145—Surface emitters, e.g. organic light emitting diodes [OLED]
    • 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
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • 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

Definitions

  • the present invention relates to a motor vehicle lamp according to the preamble of claim 1.
  • a motor vehicle lamp is from the JP 2011-150887 known.
  • a lighting device that generates a signal light light distribution.
  • a signal light distribution is used to indicate the presence of a motor vehicle and / or the intentions of his driver to other road users.
  • Headlight light distributions should illuminate objects in the travel path of the motor vehicle and thus make them perceptible to the driver. Creating a specific Light distribution is also called light function. Examples of signal light functions are eg flashing light, daytime running light, tail light, brake light and position light light function. Frequently, a lighting device fulfills a plurality of light functions with the aid of one or more light modules, which are arranged in such a lighting device.
  • the invention presented here fulfills signal light functions, in particular a daytime running light function or a flashing light function. It does not matter whether luminaires according to the invention, in addition to a light function fulfilled by the invention, also fulfill further lighting functions. Therefore, embodiments of lighting devices according to the invention can be, in particular, separate front lights for flashing or daytime running light lighting functions, or they can be front lights fulfilling a plurality of lighting functions, headlight headlamp modules or tail lights.
  • a per se known luminaire has at least one light source and a concave mirror, which has a focal length and is adapted to reflect light incident on it from first directions in second directions and thereby to produce a rule-compliant light distribution.
  • a rule-compliant signal light distribution is characterized, for example, by the fact that when used in a motor vehicle in a central direction of the light distribution, it generates a maximum brightness that is greater than a predefined minimum value and that it assumes the brightness to the right and left as well as after gradually dropping above and below, where given in a horizontal angle range of +/- 20 ° and a vertical angle range of +/- 10 ° given percentage values of maximum brightness as the minimum values.
  • the switched-on luminaire has a completely homogeneously bright appearance for a viewer looking into the luminaire, and that the luminaire has a smooth appearance when switched off.
  • a smooth appearance is understood here that, for example, as no facets of the reflector should be recognizable.
  • the lamp should be inexpensive to produce.
  • a homogeneously bright appearance is understood that the brightness of the luminous surface is perceived by the human visual sense as constant.
  • a homogeneously bright appearance of a luminaire in the switched-on state is achieved in known luminaires by dividing the reflector into a multiplicity of facets. Each facet generates an image of the light source for the viewer. From the large number of light source images results for the viewer from a certain distance the impression of a homogeneously bright surface.
  • the present invention differs by the characterizing features of claim 1.
  • drawbacks of using electroluminescent or OLED films avoid.
  • planar radiator from the outgoing and incident on the reflector light defines the first directions and the light-emitting surface is greater than half of the square of the focal length, a homogeneous bright glowing appearance can be achieved. This is achieved without a subdivision of the reflector in a variety of facets and without a structuring of the cover, which would disturb a smooth appearance in the off state.
  • the diffuse reflecting surface is a white and rough surface.
  • the reflector has a structure for illuminating the diffusely reflecting surface and has an opening, and that the at least one light source is arranged on a side of the reflector facing away from the second solid angle region and illuminates the diffusely reflecting surface through the opening.
  • the at least one light source has at least one semiconductor light source.
  • the luminaire has at least one further semiconductor light source whose light has a has different color than the light of the at least one semiconductor light source, wherein the at least one further light source is arranged so that it also illuminates the diffuse reflecting surface.
  • the diffusely reflecting surface can, according to alternative, be illuminated with light of different colors.
  • different light functions such as white daytime running lights and yellow flashing light can be generated with the same reflector of a bow lamp.
  • red tail light or brake light of a tail light and yellow flashing light can be generated with the same reflector of a tail light.
  • the light of the at least one further light source (a second light color) is preferably directed onto the reflector by the same light guide as the light of the at least one first light source (a first light color).
  • a further preferred refinement is characterized in that the light from the at least one further light source (a second light color) is directed onto the reflector by a separate light guide which is not identical to the light guide with which the light from the at least one first light source (FIG. a first light color) is directed to the reflector.
  • the light source has at least one light guide, the light of the at least one Receives semiconductor light source and directed to the diffuse reflecting surface.
  • the reflecting surface of the concave reflector outside a possibly existing structure which serves to illuminate the diffuse reflecting surface is concavely curved throughout.
  • a further preferred embodiment is characterized by a transparent cover plate whose light passage area is smooth both on the light inlet side of the pane facing the reflector and on the light exit side facing away from the reflector.
  • the concave reflector is in the form of a section of a paraboloid of revolution.
  • a preferred embodiment is characterized in that the lamp is an assembled, a built-in or a combination of lights or has an added additional light.
  • the respective supplement of the luminaire according to the invention has here specularly reflecting areas of refractive elements and is adapted to irradiate the area of legally prescribed light distribution throughout or to illuminate, for example, the brightest, central area of the legally prescribed light distribution ,
  • FIG. 1 shows beam paths of a reflection of a non-punctiform light source 10 at a point 11 of a concave reflector 12, which here has the shape of a rotational paraboloid.
  • Light that emanates from a point-like light source arranged at the focal point of a reflective rotational paraboloid and falls onto the reflector is, as is known, reflected parallel to the axis of rotation of the paraboloid.
  • the FIG. 1 illustrates the conditions that arise in real light sources, which are inevitably not punctiform, but have a finite size.
  • LEDs light emitting diodes
  • LEDs light emitting diodes
  • LEDs have square or rectangular, flat light exit surfaces with an edge length between 0.3 mm and 2 mm.
  • Particularly common chips are used with approximately square light emitting surface and an edge length of about 1 mm.
  • An incandescent filament of an incandescent lamp has, for example, a size of about 6 mm by 1 mm.
  • FIG. 1 shows in particular a section of a reflective rotational paraboloid whose focal point 14th is located in the light exit surface 16 of a correspondingly arranged light source and results by rotation of a parabolic section around a rotation axis 18 around.
  • the piercing point of a surface normal 20 of this section marks an arbitrarily selected point on the reflective cutout.
  • FIG. 1 shows the FIG. 1 in how the rays of light emanating from the four corners of the light exit surface and shown in dashed lines and the focal point beam shown in solid lines are reflected in the arbitrarily selected point.
  • a perpendicular to the axis of the paraboloid shield in the FIG. 1 not shown, a generally distorted and tilted about the point of impact of the reflected focus steel image 22 of the light exit surface.
  • the size of the region in which this applies depends in particular on the size of the images of the light source.
  • FIG. 2 shows a section through the reflector 12 after FIG. 1 ,
  • the reflector has the focal length f, which results as the distance of the focal point 14 from the apex of the paraboloid.
  • a semiconductor light source in particular an LED, is arranged such that the focal point lies in the middle of its light exit surface.
  • the light exit surface has a width d.
  • An outgoing from the focal point and at an arbitrarily selected point 11 of the reflector 12 reflected combustion beam 24 extends parallel to the axis of rotation after the reflection. Before the reflection, the burning beam with the axis of rotation 18 encloses the angle ⁇ opening towards the reflector surface.
  • FIG. 2 still marginal rays, emanating from corners of the light exit surface and reflected in the arbitrarily picked point. These marginal rays include, before and after the reflection, the same aperture angle ⁇ , which depends on ⁇ .
  • the aspect ratio of the focal length f to the width d of the light exit surface is approximately equal to 3: 1. If one plots the opening angle ⁇ as a function of the angle ⁇ for a fixed ratio of focal length f to the width d of the light exit surface, the result is given in FIG. 3 illustrated dependency. FIG. 3 Thus, the dependence of an opening angle ⁇ of a reflected light beam on the angular position 4 of a reflecting point 11 on the reflector 12.
  • the ⁇ values change in the reverse direction.
  • the f / d ratio is doubled, approximately the resulting values of the angle ⁇ are approximately halved.
  • the opening angle ⁇ as in the FIGS. 2 and 3 are shown in a realization of the lamp as a vertical opening angle of a light distribution, which results on a perpendicular to the axis of rotation of the parabolic reflector 12 measuring screen in front of the lamp, or before the arrangement of light source and reflector results.
  • a maximum angular width of ⁇ 12.4 °, which is not sufficient to cover the required for a rule-compliant light distribution in the vertical direction angle width of 20 ° (+/- 10 °).
  • one can achieve the desired angular width by reducing the ratio of focal length f to the width d of the light exit surface of the light source. This can of course be achieved by reducing the focal length f and / or by increasing the light exit area.
  • FIG. 4 illustrates this by an oblique view of a half-shell concave mirror 30 having a reflective half-shell 32 and a bottom portion 34.
  • This half-shell reflector is set up to reflect and radiate incident radiation from its bottom area onto the curved, reflecting inner surface of the half-shell 32.
  • a radiating area should be at least as large as half the square of the focal length of the reflector in order to approximate this desired effect.
  • the effect is better, the larger the radiating surface.
  • the radiating surface extends in a direction perpendicular to the main emission direction of the reflector over a length which is at least as large as the focal length of the reflector. It is also preferred that the radiating surface extends in a direction parallel to the main emission direction of the reflector over a length which is at least half as large as the focal length of the reflector. It is particularly preferred if the radiating surface occupies the entire bottom region 34, so that the entire bottom region acts as a radiator.
  • the radiating floor area in the emission direction of the reflector still extends beyond the projection of the upper edge of the reflector into the plane of the floor area. This is in the FIG. 4 indicated by the dashed line 36.
  • FIG. 5 shows a non-inventive embodiment of a lamp according to the invention in a sectional view.
  • the luminaire 38 has a non-punctiform light source 10 and a concave reflector 12, which is arranged by its shape and its arrangement with respect to the light source 10 to light that incident on it from first directions 40 in the second directions 42 reflect.
  • the arrangement of the light source 10 and the concave mirror reflector 12 is located in a housing 44 of the lamp 38.
  • a light exit opening of the lamp 38 is covered by a transparent cover 46 of the lamp.
  • the lamp 38 has a flat radiator 48. Of the planar light emitting and incident on the reflector 12 light defines the first directions 40.
  • the surface of the flat radiator emanating from the light incident on the reflector 12 is at least half of the square of the focal length of the reflector.
  • FIG. 5 shows not inventive design, in which the radiator is an electroluminescent or OLED (OLED) film (light emitting diode). It is essential in both cases that both alternatives have large-area light exit surfaces that correspond to the respective film size and, for example, can cover the entire floor area 34.
  • An electroluminescent film has, for example, a light-generating layer of zinc sulfide which is doped, for example, with Au, Ag, Cu, Ga, or Mn and which lies between a transparent and a reflective electrode. When a voltage is applied to the electrodes, the light-generating layer emits light passing through the transparent electrode either directly or after a reflection reversing the light direction at the reflective electrode opposite the transparent electrode in the first directions is emitted.
  • the radiator is identical to the light source.
  • these lamps have disadvantages such as high prices, low brightness and poor handleability.
  • FIG. 6 shows an embodiment in which the radiator 48 has a diffusely reflecting surface 50, and the luminaire has at least one light source 10, wherein the light source, the diffuse reflecting surface and the concave mirror are arranged relative to each other so that the main emission of at least one light source the diffuse reflecting surface is directed and that the concave reflector is illuminated diffusely on the surface 50 of reflected light.
  • the diffusely reflecting surface is preferably a white and rough surface. Due to the configuration as a white surface, the diffusely reflecting surface has a high degree of reflection. As a desired consequence of the high reflectance, a correspondingly high proportion of the luminous flux emitted by the light source is diffusely reflected to the reflector.
  • the light source 10 has in the in the FIG. 6 illustrated embodiment, a light guide 54 and a light emitting diode 56 or a group of LEDs.
  • the reflector has an opening in its mirrored reflection surface.
  • the light guide 54 projects through this opening into the reflection volume of the concave mirror reflector.
  • the reflection volume is that between the radiator 48 and the reflective, the radiator 48 facing reflection surface of the reflector 12 lying volume.
  • the light emitting diode 56 is on the reflection volume side facing away from the reflector 12 is arranged close to a light entrance surface of the light guide 54 so that the largest possible part of the light emanating from it is coupled into the light guide 54.
  • the distance between the light exit surface of the light emitting diode and the light entry surface of the light guide 54 is for example one tenth of a millimeter to one millimeter.
  • the coupled-in light is transported by the light guide 54 into the reflection volume and emerges in the reflection volume from a light exit surface of the light conductor 54 such that the largest possible part of the exiting light illuminates the diffusely reflecting surface 50 of the radiator 48.
  • the optical waveguide is preferably arranged so that as little light as possible exits the array of reflector and radiator without first having hit the diffusely reflecting surface 50. It can be accepted that part of the light emerging from the optical fiber first strikes the reflector before it is incident on the diffusely reflecting surface 50, as shown in FIG FIG. 6 for the very left edge ray is the case.
  • each point of the radiator should ideally radiate in the entire half-space or at least in a large part of the half-space, so that the reflector is illuminated as evenly as possible and in turn appears as bright as possible homogeneous bright, is both in the aforementioned films as well complies with the realization of a flat radiator by illuminating a diffuse reflective rough white surface.
  • the diffusely reflecting rough and white surface 50 of the radiator 48 reflects the light in an undirected manner and therefore acts like the aforementioned foils.
  • the proportion of non-directional reflected light incident on the e.g. parabolic reflector falls, is converted by this as desired in a rule-compliant light distribution.
  • FIG. 7 shows a perspective view of the subject of the FIG. 6 ,
  • the FIG. 6 can as a cut through the subject of FIG. 7 are considered, the sectional plane containing the central light source and the axis of rotation of the reflector, which is parallel to the main emission of the reflector.
  • FIG. 7 shows in particular an embodiment with n light sources 54.1, 54.2, ..., 54.n, where n is equal to 3 in the concrete case. It is preferred that n is a number between 1 and 10, in particular a number between 1 and 5.
  • Each of the n light sources from the FIG. 7 preferably has the structure of the light source 10 from FIG. 6 and is also arranged as it is in connection with FIG. 6 has been described.
  • the light sources are preferably arranged so that the diffusely reflecting surface 50 is strongly illuminated in the vicinity of the focal point of the reflector, since the light reflected from this point is reflected in the direction of the parabolic axis. In a proper use of the lamp in a motor vehicle, this direction usually in the center of a rule compliant light distribution.
  • the brightness distribution on the surface 50 of the radiator 48 can be determined by the number, the position and the brightness of the Light-emitting diodes, as well as by the arrangement and geometric design of the light guide can be very selectively influenced.
  • the light guides can be straight or curved, for example, in the light transport direction. You can have a constant or increasing in the light transport direction cross-section. The latter causes a parallelization of the light and thus a reduction of the opening angle at which the light exits the light exit surface of the light guide.
  • the cross section may be round or rectangular in shape, for example.
  • the luminaire has at least one further semiconductor light source whose light has a different color than the light of the at least one semiconductor light source, wherein the at least one further semiconductor light source is arranged such that it also has the diffusely reflecting surface illuminated.
  • the diffusely reflecting surface can, according to alternative, be illuminated with light of different colors.
  • different light functions such as white daytime running lights and yellow flashing light can be generated with the same reflector of a bow lamp.
  • red tail light or brake light of a tail light and yellow flashing light can be generated with the same reflector of a tail light.
  • the light is the at least one other Semiconductor light source (a second light color) directed by the same light guide to the reflector as the light of the at least one first semiconductor light source (a first light color).
  • the first semiconductor light source (s) and the second semiconductor light source (s) may be arranged side by side in front of a common light entry surface of one and the same light guide. For clarity, one can see the light source 56 in the FIG. 6 for this embodiment as an arrangement of several juxtaposed light sources imagine.
  • a further preferred refinement is characterized in that the light from the at least one further light source (a second light color) is directed onto the reflector by a separate light guide which is not identical to the light guide with which the light from the at least one first light source (FIG. a first light color) is directed to the reflector.
  • a second light color the light from the at least one further light source
  • FOG. a first light color the light from the at least one first light source
  • the luminaire When used as intended in a motor vehicle, the luminaire will always be arranged such that the main emission direction of the luminaire points to the center of a light distribution complying with the regulations. Whether the spotlight 48 for a viewer who is staying in the main emission direction and looking into the lamp, then up, down, right or left, is secondary. Assuming that the orientation of the luminaire according to FIG. 5 corresponds to their installation situation in the vehicle, then the radiator 48 is arranged for the viewer at the bottom of the lamp.
  • FIG. 8 shows an embodiment in which the arrangement of the FIG. 5 is turned upside down.
  • This has the advantage that the spotlight for the observer, whose eye level is usually above the installation height of the lamp, is hidden from many viewing directions. This is advantageous because, if possible, the observer should only perceive the appearance of the homogeneously bright reflector, without this being influenced by the visibility of additional luminous surfaces.
  • the reflector 12 of the embodiment according to FIG. 8 consists of two reflector parts 12a and 12b, which have a different focal length. From the different focal length results in a different curvature of the specular reflector surfaces, which in turn leads to a gap 58 between the two reflector parts 12a and 12b.
  • the gap runs horizontally when the luminaire is installed, for example.
  • the light source 10 is disposed in the gap 58 so as to illuminate the surface 50 of the radiator 48.
  • the light source 10 here also has a light guide 54 and a light-emitting diode 56.
  • the light guide 54 here has the already mentioned property that widens its cross section in the light transport direction.
  • the light-emitting diode 56 is arranged on a circuit board 60. The arrangement of the light source in the gap is associated with the passage of the light in the reflection space Disturbing the appearance of the reflector 12 and the homogeneity of its brightness distribution minimized.
  • the light guide 54 is realized in one piece material, which is made possible, for example, by production as an injection molded part.
  • a preferably planar board carries three light-emitting diodes, which are arranged so that light of each light-emitting diode is coupled via an end face of a respective associated light guide branch in the respective light guide branch.
  • the three light guide branches have a cross section growing in the light transporting direction.
  • FIG. 10 shows a perspective view of a lamp 62, as it is applicable to the vehicle bug as a flashing or daytime running lights or at the rear of the vehicle for all lighting functions either as a single light or as a light module in a further light modules having lighting device.
  • the light color is generated by using light emitting diodes that emit light with corresponding light colors such as white, yellow or red.
  • An optionally required yellow or red appearance can alternatively be generated by using a correspondingly colored transparent cover.
  • the respective supplement of the luminaire according to the invention should have specular reflective areas of refractive elements and be adapted to irradiate the area of legally prescribed light distribution throughout or to illuminate, for example, the brightest, central area of the statutory light distribution.
  • Under assembled lights are understood to mean facilities with their own luminous surfaces and their own light sources, but a common housing.
  • Under nested lights are understood to mean devices with their own or a single light source, which emits light under different conditions (for example, different optical, mechanical or electrical characteristics), with common or partially common luminous surfaces and a common housing.
  • the respective supplement of the luminaire according to the invention should have specular reflective areas of refractive elements and be adapted to irradiate the area of legally prescribed light distribution throughout or to illuminate, for example, the brightest, central area of the statutory light distribution.
  • Under assembled lights are understood to mean facilities with their own luminous surfaces and their own light sources, but a common housing.
  • Under nested lights are understood to mean devices with their own or a single light source, which emits light under different conditions (for example, different optical, mechanical or electrical characteristics), with common or partially common luminous surfaces and a common housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (13)

  1. Feu (38) pour un véhicule automobile, avec au moins une source lumineuse (10) et un réflecteur de miroir concave (30) qui présente une focale et qui est configuré pour réfléchir de la lumière qui est incidente sur celui-ci à partir de premières directions (40), dans des deuxièmes directions (42) et pour engendrer par cela une répartition de lumière conforme aux réglementations, le feu comprenant un émetteur de lumière (48) surfacique, de la lumière provenant de celui-ci et étant incidente sur le réflecteur définissant les premières directions et dont la surface émettant de la lumière étant plus grande que la moitié du carré de la focale, caractérisé en ce que l'émetteur comprend une surface (50) réfléchissant d'une manière diffuse et en ce que le feu comprend au moins une source lumineuse, la source lumineuse, la surface réfléchissant de manière diffuse et le réflecteur de miroir concave étant disposés les uns par rapport aux autres de façon que la direction principale d'émission de ladite au moins une source lumineuse soit orientée sur la surface réfléchissant de manière diffuse et en ce que le réflecteur de miroir concave est illuminé par de la lumière réfléchie de manière diffuse par la surface.
  2. Feu (38) selon la revendication 1, caractérisé en ce que la surface émettrice s'étend dans une direction perpendiculaire à la direction principale d'émission du réflecteur sur une longueur qui est au moins égale à la focale du réflecteur.
  3. Feu (38) selon la revendication 1 ou 2, caractérisé en ce que la surface émettrice s'étend dans une direction parallèle à la direction principale d'émission du réflecteur sur une longueur qui est au moins la moitié de la focale du réflecteur.
  4. Feu (38) selon l'une des revendications 1 à 3, caractérisé en ce que la surface réfléchissant de manière diffuse est une surface blanche et rugueuse.
  5. Feu (38) selon la revendication 4, caractérisé en ce que le réflecteur présente une structure ayant une ouverture et servant à l'illumination de la surface réfléchissant de manière diffuse et en ce que ladite au moins une source lumineuse est disposée sur un côté du réflecteur opposé aux deuxièmes directions et illumine la surface réfléchissant de manière diffuse à travers l'ouverture.
  6. Feu (38) selon l'une des revendications 1 à 5, caractérisé en ce que ladite au moins une source lumineuse comprend au moins une source lumineuse à semi-conducteur.
  7. Feu (38) selon la revendication directement précédente, caractérisé en ce que la source lumineuse comprend au moins un guide de lumière qui reçoit de la lumière de ladite au moins une source lumineuse à semi-conducteur et l'orient sur la surface réfléchissant de manière diffuse.
  8. Feu (38) selon l'une des revendications précédentes, caractérisé en ce que la surface réfléchissante du réflecteur de miroir concave est courbée de manière continuellement concave en dehors d'une surface éventuellement présente servant à l'illumination de la surface réfléchissant de manière diffuse.
  9. Feu (38) selon l'une des revendications précédentes, caractérisé par une plaque de recouvrement (46) transparente dont la zone de passage de lumière est lisse aussi bien sur le côté d'entrée de lumière orienté vers le réflecteur que sur le côté de sortie de lumière opposé au réflecteur.
  10. Feu (38) selon l'une des revendications précédentes, caractérisé en ce que le réflecteur de miroir concave a la forme d'une section d'un paraboloïde de révolution.
  11. Feu (38) selon la revendication 6, caractérisé en ce que le feu comprend, outre ladite au moins une source lumineuse à semi-conducteur, au moins une source lumineuse à semi-conducteur supplémentaire dont la lumière présente une autre couleur que la lumière de ladite au moins une source lumineuse, ladite au moins une source lumineuse supplémentaire étant disposée de façon qu'elle illumine également la surface réfléchissant de manière diffuse.
  12. Feu (38) selon la revendication 11, caractérisé en ce que la lumière de ladite au moins une source lumineuse supplémentaire est orientée sur le réflecteur par le même guide de lumière que la lumière de ladite au moins une première source lumineuse ou que la lumière de ladite au moins une source lumineuse supplémentaire est orientée sur le réflecteur par un guide de lumière propre qui n'est pas identique au guide de lumière par lequel la lumière de ladite au moins une première source lumineuse est orientée sur le réflecteur.
  13. Feu (38) selon l'une des revendications précédentes, caractérisé en ce que le feu est un feu assemblé, un feu entrelacé ou une combinaison de feux ou en ce qu'il comprend un feu supplémentaire ajouté.
EP14155174.7A 2013-02-23 2014-02-14 Phare de véhicule automobile ayant une apparence lumineuse claire homogène Active EP2770247B1 (fr)

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DE202013001767U DE202013001767U1 (de) 2013-02-23 2013-02-23 Kraftfahrzeugleuchte mit einem homogen hell leuchtendenErscheinigungsbild

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Cited By (2)

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DE102020127218A1 (de) 2020-10-15 2022-04-21 Marelli Automotive Lighting Reutlingen (Germany) GmbH Reflektorbauteil für eine Kraftfahrzeugbeleuchtungseinrichtung
DE102020127717A1 (de) 2020-10-21 2022-04-21 Marelli Automotive Lighting Reutlingen (Germany) GmbH Beschichtetes Bauteil mit einer Basisstruktur aus einem transparenten Material

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FR3022608B1 (fr) * 2014-06-19 2018-07-20 Psa Automobiles Sa. Dispositif d'eclairage et/ou de signalisation generant une lumiere homogene sur un ecran
JP6445818B2 (ja) 2014-09-19 2018-12-26 株式会社小糸製作所 車両用灯具
DE102014220105A1 (de) 2014-10-02 2016-04-07 Automotive Lighting Reutlingen Gmbh Lichtleiter und Kfz-Beleuchtungseinrichtung
DE102015219346A1 (de) 2015-10-07 2017-04-13 Automotive Lighting Reutlingen Gmbh Lichtmodul für eine Kraftfahrzeugbeleuchtungseinrichtung
DE102016120903A1 (de) 2016-11-02 2018-05-03 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung eines Kraftfahrzeugs
DE102017117560A1 (de) * 2017-08-02 2019-02-07 Automotive Lighting Reutlingen Gmbh Lichtmodul und Verfahren zum Betreiben des Lichtmoduls
DE202018102803U1 (de) 2018-05-18 2019-08-22 Automotive Lighting Reutlingen Gmbh Lichtmodul für eine Kraftfahrzeugbeleuchtungsvorrichtung

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JP2006196196A (ja) * 2005-01-11 2006-07-27 Pentax Corp 車両用ヘッドライト
AT8252U1 (de) * 2005-03-21 2006-04-15 Zizala Lichtsysteme Gmbh Infrarot-projektionsmodul
AT504668B1 (de) * 2007-01-11 2008-07-15 Zizala Lichtsysteme Gmbh Totalreflexionsoptik-system für einen scheinwerfer oder eine lichteinheit eines kraftfahrzeuges
FR2934353B1 (fr) * 2008-07-25 2011-03-11 Valeo Vision Sas Systeme optique avec fonction d'eclairage a large surface d'emission pour vehicule automobile
JP5195296B2 (ja) * 2008-10-30 2013-05-08 市光工業株式会社 車両用前照灯
JP5233686B2 (ja) * 2009-01-13 2013-07-10 市光工業株式会社 車両用灯具
JP5543228B2 (ja) * 2010-01-21 2014-07-09 株式会社小糸製作所 面発光体を備えた車両用灯具

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020127218A1 (de) 2020-10-15 2022-04-21 Marelli Automotive Lighting Reutlingen (Germany) GmbH Reflektorbauteil für eine Kraftfahrzeugbeleuchtungseinrichtung
DE102020127218B4 (de) 2020-10-15 2023-04-27 Marelli Automotive Lighting Reutlingen (Germany) GmbH Reflektorbauteil für eine Kraftfahrzeugbeleuchtungseinrichtung
DE102020127717A1 (de) 2020-10-21 2022-04-21 Marelli Automotive Lighting Reutlingen (Germany) GmbH Beschichtetes Bauteil mit einer Basisstruktur aus einem transparenten Material
DE102020127717B4 (de) 2020-10-21 2023-03-16 Marelli Automotive Lighting Reutlingen (Germany) GmbH Beschichtetes Bauteil mit einer Basisstruktur aus einem transparenten Material

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DE202013001767U1 (de) 2013-03-14
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