WO2019029977A1

WO2019029977A1 - Luminaire having two light sources and an optic

Info

Publication number: WO2019029977A1
Application number: PCT/EP2018/069705
Authority: WO
Inventors: Lilly FISCHER; Martin Petzold
Original assignee: Osram Gmbh
Priority date: 2017-08-08
Filing date: 2018-07-20
Publication date: 2019-02-14
Also published as: CN212473264U; DE102017213733A1

Abstract

The invention relates to a luminaire for a headlight, comprising a first light source (2, 40) and a second light source (2, 42), and an optic (28), wherein the luminaire (4) is designed in such a way that in a first mode of operation, the first light source (2, 40) emits a light by way of the optic (28) independently from the second light source (2, 42), and that in a second mode of operation, a light emitted by the first light source (2, 40) by way of the optic (28), complements a light emitted by the second light source (2, 42) by way of the optic (28).

Description

LIGHT WITH TWO LIGHT SOURCES AND AN OPTICS

DESCRIPTION

The invention is based on a luminaire for a headlamp, as well as on a headlamp with such a luminaire, and on a motor vehicle headlamp with such a luminaire.

Headlamps for vehicles are known from the current state of the art, it being possible for standardizations to be provided for such headlamps, for example standards from the International Technical Commission (IEC). Such a light source can be used, for example, for an additional light function in a vehicle, such as for a fog light function, a daytime running light function, a dipped beam function, a high beam function, a tail light function, a signal light function, a position light function, a flashing light function, a brake light function, an accent lighting function, as an effect illuminant, as well as for other non-automotive applications, such as lighting in headlamps for effect lighting, entertainment lighting, arcitainment lighting, outdoor lighting, Offsho - Re-lighting, lighting for wind turbines, general lighting, medical and therapeutic Be ^¬ lights or lighting for horticulture (horticulture) or animal rearing be used.

The aesthetic appearance of a vehicle is generally estimated as affecting a purchase decision one ^¬. The appearance of a vehicle headlight fers generally affects the aesthetic Erschei ^¬ pearance of the vehicle.

Headlamps are preferably used as assemblies in automotive engineering. This is advantageous in terms of their property as vendor parts and in terms of installation effort. Such a headlamp, such as a vehicle rearview lamp, has several functions, such as a brake light function, a Heckleuchtenfunkti ^¬ on, a cornering light function, a Rückfahrlichtfunkti- on, a rear fog light function and a daytime running light function. Usually these functions are not operated al ^¬ le simultaneously. This is followed by gaps that are perceived as unaesthetic or fluctuations in the brightness of the headlight. The object of the invention is to clarify the scope for a way ^¬ to reduce such "dark holes" in the light image of a headlight. Particular attention is paid on a production-ready solution.

The object is achieved by a luminaire according to claim 1, a headlamp according to claim 14 and a motor vehicle headlamp according to claim 15.

Particularly advantageous embodiments are claimed in the sub ^¬ claims.

Can be claimed independently is a lamp for a headlamp with a first light source and a second light source and optics, wherein the lamp is prepared so that in a first operating mode, the first light source emits light through the optics independently of the second light source, and that in one second drive mode from the first light source on the optics ab ^¬ given light is supplemented by emitted from the second light source via the optic light.

Under a luminaire is thus understood in the general sense, a combination of a light source and optics, which are cooperatively prepared to give off ^¬ light. For this purpose different is an inventive Leuch ^¬ te, which comprises two light sources and an optical system, and which is operable in an additional operating mode. The light source may be formed, for example, as: an incandescent lamp; a halogen lamp, a halogen retrofit LED lamp, an LED lamp for vehicle applications, such as the OSRAM XLS LED lamp (as described for example in DE 20 2014 002 809 Ul); a high intensity discharge (HID) lamp, in particular as a gas discharge lamp; a light emitting diode (LED); a pixelated LED (such as the OSRAM EVIYOS COB matrix light source) or generally a light source with matrix arrays; a laser (such as a Laser Activated Remote Phosphor (LARP) system (Note: the term phosphorus also includes phosphorus-free phosphors); a projector operating on a digital light processing (DLP) principle; an IR radiation source, in particular an IR laser diode; or other ^¬ an electro-magnetic radiation in and / or partly in and / or adjacent to and / or partially pre ^¬ direction close to the visible Be ^¬ rich donor, reproducing and / or generating. In particular, an LED with a downstream phosphor for partially converting primary light is to be understood by a light-emitting diode (Emission light of the LED) in secondary light (conversion ^¬ light of the phosphor); a warm white light LED emittie ^¬ Rende; a cool white light emitting LED; an LED, which is operated in full conversion; an LED without a downstream phosphor; a pixelated LED array arrangement; an organic LED (OLED) and / or the like can be understood. Preferably, the LED chips emit white light in the standard ECE-white field of the Au ^¬ tomobilindustrie, for example, realized by a blue emitter and a yellow / green converter.

The term light source may be understood as a radiation source in a broader sense, which is prepared for it before ^¬ for generating electromagnetic radiation in the visible or non-visible portion of the electromagnetic spectrum see.

The term "optics" is understood to mean a device comprising at least one optical element, inasmuch as the term "optics" can be replaced by the term "optics device" or "optics device". The optical element is selected from a group, wherein the group comprises, for example, a lens, a reflector, a diaphragm, a light guide, a light-conducting element, a light-diffractive element and / or a light-refracting element and / or Light-changing element, such as a color filter.

The term "mode" an operation mode of the lamp is intended. Instead of the term "Betriebsmo ^¬ dus" can also speak of a "circuit" in the sense of Bestromens or from an "operating variant". The feature that a signal output via the optic light adds another emitted via the optic light, be ^¬ indicates that the complemented-being should be measured finally resulting light image or impression based on the. The term "complement" is intended to refer to a context.

Further, it may be provided that the light emitted by the first light source via the optics supplements the light emitted by the second light source via the optic correspondingly. The term "correspondingly supplemented" denotes a close relationship.

Further, it can be provided that the light emitted by the first light source via the optics supplements the light emitted by the second light source via the optics in a time-corresponding manner. This may mean that the light emitted by the first light source is clocked and / or synchronized with a light sequence or light sequence emitted by the second light source. For a blink- example, can be realized kerunterstützung by for example setting a yellow light synchronized with a yellow flashing ^¬ enlighten flashes.

Further, it can be provided that the light emitted by the first light source via the optics complements the light emitted by the second light source via the optics in a color-corresponding manner. This may mean that a different color impression can be avoided. This may also mean that a different color impression, for example via the contact of complementary colors or the like can be achieved.

Further, it may be provided that the light emitted by the first light source via the optics supplements the light emitted by the second light source via the optics in a spatially corresponding manner. This ensures that the lights are arranged in the illumination pattern in a geometric figure with each other, they are adjacent beispielswei ^¬ se, each surrounded derglei- or surfaces can be intended.

The above-mentioned variants of a corresponding supplement can be combined with one another in order to achieve an even more aesthetic impression.

Further development it can be provided that the loading triebsmodi with respect to the emitted color under the failed ^¬. Usually, a brake light is red, a flashing light yellow and a reversing light white. Thus, it can be provided that the operating modes do not have to coincide with respect to the radiated color. The operation modes re- late attention to the operating first Betriebsmo ^¬ dus and second mode of operation according to the invention.

Further development it can be provided that in the second operating mode of the two light sources is approximately the same ^¬ color is emitted. This allows that the can be perceived by the first light source via the optical abge ^¬ passed light and the light emitted from the second light source via the optical light as a substantially same color light signal. Further, it is provided that the optic comprises at least one integral coupling-out optics. As a result, he is ^¬ enough that a viewer perceives the lamp as a coherent design element, which can cause an aesthetically desired effect.

If the optics includes a multi-piece output optical system, a particularly application-customizable product is ^¬ he can see.

If the coupling-out optical system comprises a first area assigned to the first light source for emitting and a second area assigned to the second light source for emitting, each of the two light sources can emit their light in a geometrically defined area. This has the aesthetically desired effect of giving the light sources a clearly outlined contour.

Further development it can be provided that the first Be ^¬ is different range from the second region, may not be excluded that one of the two areas of the two areas surrounds the other at least teilwei- se and / or in the other of the two regions, a light irradiates.

If the first area or the second area has a top surface prepared for blasting, one can save a separate optics. The other prepared for radiating surface may be pretreated to a light distributing Prepared ^¬ coated surface to be combined with, for example, a narrow conical ^¬ light source. The surface prepared for blasting may be a faceted surface. As a result, for example, space can be saved, just as with a Fresnel lens. In cooperation act between the XLS light source and the faceted outcoupling of the light guide structure can provide an IEC-compliant reversing light function ^¬ who. When the output optical system is prepared to the fact that the first portion predominantly emits a signal generated by the first light source in the second operating mode, and (that in the second operating mode), the second region before ^¬ predominantly emits a signal generated by the second light source, it is achieved that At least half of the light generated by the respective light source is radiated or emitted in the respectively assigned to the emitting area. It can therefore be provided that the light sources of the luminaire emit light over the respective regions in a region which is clearly outlined for a viewer. As a result, a desired aesthetic effect can be achieved.

When the first light source and / or the first area are prepared for emitting white light, the first light source can be used in a white light Be ^¬ operating mode, such as a reversing light are operated in a motor driving ^¬ convincing.

When the first and the second light source and the first and the second region for emitting yellow light are prepared, the first and the second light ^¬ source in a yellow light used mode of operation, such as a blinker operation mode can be used.

When the first area is white, the color of the light caused by the first light source can be easily influenced by the first light source. If the second region is white or yellow, a yellow light can be emitted by providing a white light-emitting second light source or by providing a a yellow light-emitting second light source via the second region, thus obtains a height ^¬ re freedom of choice with respect to the second light source.

When the first light source in cooperation with the ers ^¬ th region is prepared for generating white light, a Rückfahrlichtfunk- tion can be realized over the first region. When the first light source is to ^¬ sammenwirken prepared with the first region for generating of yellow light, a turn signal light function can be realized over the first region. If the first light source is prepared to produce white and yellow light in cooperation with the first area, both a turn signal light function and a reversing light function can be realized over the first area.

When the second light source is prepared to generate white light in cooperation with the second region, a reverse light function can be realized over the second region. When the second light source is prepared to generate yellow light in cooperation with the second region, a turn signal light function can be realized over the second region. When the second light source is prepared to produce white and yellow light in cooperation with the second region, different light functions can be selected with respect to the second region. If the second light source is a turn signal light source or a cornering light source, and the second operating mode is a turn signal light mode, the light can be used as a turn ^¬ light. When the first light source is a rear light source, and the first operation mode is a reverse light mode, the lamp can be used as reversing ^¬ light.

Independent claimable is also a headlamp with a lamp, as described above. This headlight achieves the advantages of the respective lamp.

Independent claimable is also a motor vehicle headlight with a lamp. This, too, attains the advantages of the respective lamp. A motor vehicle headlight within the meaning of this invention is intended to be a headlight prepared for use on a motor vehicle.

A vehicle may be an aircraft or a water-bound vehicle or a land-based vehicle or a spacecraft. The land-based vehicle may be a motor vehicle or a rail vehicle or a bicycle. Particularly preferred is as a vehicle truck ^¬ or a car or a motorcycle. The vehicle may further be configured as a non-autonomous or semi-autonomous or autonomous vehicle.

The suitability for use in vehicle can affect DA executed taking into account that vehicle usual standards, a ^¬ be maintained. This utility can express, for example, characterized in that all the functional parts for the tempera ^¬ range of -40 degrees Celsius to 125 degrees Celsius are designed. The invention will be explained with reference to an embodiment ^¬ form. The figures show:

1 is a perspective schematic representation of a light source according to an embodiment of the invention, according to one embodiment,

2 is a perspective schematic representation of part of a lamp according to the invention according to the embodiment,

3 shows the luminaire according to the first embodiment in a schematic perspective view during a second operating mode,

4 shows the luminaire according to the first embodiment in a perspective schematic illustration during a first operating mode, FIG. 5 shows the luminaire according to the first embodiment in a schematic perspective illustration during an alternative second operating mode, wherein FIGS. 5a-d shows the luminaire at different successive times. In Fig. 1, a light source 2 of a lamp 4 according to the embodiment is shown. The lamp 4 can be used as a tail light, as a signal light, as position light, as a flashing light, as a brake light, as accent light, but also as fog light, as a daytime running light, as low beam and / or high beam function for a (not shown) headlight of a vehicle (not shown) be used. The lamp 4 is part of a driving ^¬ zeugscheinwerfers. The light source 2 has a base 6. About the base 6, the light source 2 at a (not shown) mount fastened. The base 6 has an approximately circular cylindrical outer lateral surface 8, from which four key lugs 10 extend radially away. On the front side, the base 6 has a circular-cylindrical recess 12, in which radiation sources in the form of, for example, LEDs 14 and electronic components are arranged. The LEDs 14 may also be referred to as emitters or as luminous elements. In the present case, three LEDs 14 are present which are issued animals may, for example, all three white light, or that a yellow light emittie ^¬ Rende include LED 14 and two LEDs emitting a white light 14, or that a respective one red, one yellow and include a blue light emitting LED 14, or which have a different configuration. At a distance from the key lugs 10, the base 6 is surrounded by a sealing ring 16. Furthermore, a heat sink 18 extends from the base 6. The heat sink 18 has a multiplicity of cooling ribs 20 which extend axially away from the base 6 in the direction opposite to the radiation direction of a radiation emitted by the LEDs 14. The cooling fins 20 surround a connection 22 for the light source 2, which is prepared for the electrical contact. The socket (not shown), which is part of the headlight, has a keyhole (not shown) in which a key ring (not shown) is formed. In this a plurality of (not ^{dargestell ¬} th) key recesses is introduced. These act together with the key lugs 10 in that the key lugs 10 have a counter-identical shape to the key recesses in cross-section (axial cross-section) to ei ^¬ ner major axis 24 of the base 6 and the (not illustrated ^¬ set) version. The key savings gene and the key ring and the outer circumferential surface 8 and the key flaps 10 act as a bayonet ^{Verriege ¬} ment 26 together.

Fig. 2 shows a part of the lamp 4 of the exemplary form. From the lamp 4 are shown a light source 2, and an optical system 28. The optical system 28 has a Einkop ^¬ pelabschnitt 30, which is prepared to the recess 12 the light source 2 adjacent to couple the radiation of the LEDs 14 in the optics 28. The optical system 28 further includes a Lichtleitstruktur 32, which is prepared to supply a eingekop ^¬ peltes at the coupling-in section 30 a light Auskoppelabschnitt 34th The light guide structure 32 does not necessarily include light guides in the sense of glass fibers. The optical system 28 is a coupling-out optical system 36. The coupling-out section 34 is a region 38 of the coupling-out optical system 36 that is prepared for emitting radiation. The coupling-out section 34 is facetted.

Fig. 3 shows the lamp 4 in a turn signal mode of operation, which is a second mode of operation according to the invention. The lamp 4 has four light sources 2, one of which is referred to as a first light source 40, and of which three light sources 2 are referred to as a second light source 42 in summary. (The light source 42 could also be only one light source 2 sen comprehensive.) The optical system 28 comprises two portions 38, namely ei ^¬ NEN the first light source 40 associated with the first region 44 and the second light source 42 associated with the second region 46. The first region 44 is white, the second area 46 yellow. In the second mode of operation, the lamp 4 emits a yellow light, the first light source 40 emits a yellow light. In the second mode of operation, the light emitted by the first light source 40 via the optics 28, 44 supplements the light emitted by the second light source 42 via the optics 28, 46 in color and in space. Fig. 4 shows the lamp in a first mode of operation. The first operating mode is a reverse light mode. The first light source 40 emits a white light via the optics 28, 44. That is, in the first embodiment, the light source 2 of the first light source 40 emits a white light or a yellow light depending on the operation mode.

The Fig. 5a shows a variant of the second Betriebsmo ^¬ mode. The idea, which has recently been perceived as aesthetically pleasing, to let a flashing light "wander" in addition to flashing in the direction indicated, is behind FIG. 5a In the illustration of FIGS. 5a-d, it is assumed that the lamp 4 is a At a time indicated in Fig. 5a, only the leftmost light source 2 of the second light source 42 illuminates. At the time shown in Fig. 5b, the two left light sources 2 of the second light source 42 illuminate 5c, the three light sources 2 of the second light source 42 illuminate. At the time shown in FIG. 5d, all the light sources 2 illuminate the first light source 40 and the second light source 42. As in a second operating mode, FIG the first light source 42 via the optics 28, 44, a light emitted via the optical system 28, 46 emitted light not only in color and spatially korre of the two ^¬ th light source 42 Spondend supplements, but also temporally corresponding supplements. LIST OF REFERENCE NUMBERS

Light source 2

Lamp 4 socket 6

Outer jacket surface 8

Key lug 10

Recess 12

LED 14 sealing ring 16

Heat sink 18

Cooling fin 20

Connection 22

Main axis 24 Bayonet lock 26

Optics 28

Einkoppelabschnitt 30

Light guiding structure 32

Decoupling section 34 Auskoppeloptik 36 Area 38

First light source 40 Second light source 42 First region 44 Second region 46

Claims

Light for a headlamp with a first light source (2,40) and a second light source (2, 42) and an optic (28), wherein the light

(4) is prepared so that in a first mode of operation the first light source (2,40) emits light across the optic (28) independent of the second light source (2,42) and in a second mode of operation from the first light source ( 2.40) via the optics (28) ab ^¬ given light is supplemented by light emitted from the second light source (2.42) via the optics (28).

Luminaire according to claim 1, wherein the operating modes with respect to the radiated color differ, wherein in the second operating mode of the two light sources (2, 40, 42) approximately the same color is radiated.

Light according to one of claims 1 to 2, wherein the optic (28) comprises at least one one-piece or mehrstü ^¬ ckige output optical system (36).

Luminaire according to claim 3, wherein the coupling-out optical system (36) comprises a first region (44) associated with the first light source (2,40) for emitting radiation and a second region (46) associated with the second light source (2,42) for emitting radiation.

5. Luminaire according to claim 4, wherein the coupling-out optical system (36) is prepared to be used in the second operating mode. mode, the first region (44) predominantly emits a light generated by the first light source (2, ⁴⁰ ), and the second region (46) predominantly emits a light generated by the second light source (2, ⁴² ).

Luminaire according to one of claims 1 to 5, wherein the first light source (2,40) and / or the first region (44) are prepared for emitting white light.

Luminaire according to one of claims 1 to 6, wherein the first and the second light source (2,40,42) or the first and the second light source (2, 40, 42) and the first and the second region (44,46) for Blasting of yellow light are prepared.

8. Luminaire according to one of claims 4 to 7, wherein the first region (44) is white and / or wherein the second

Area (46) is white or yellow.

9. Luminaire according to one of claims 4 to 8, wherein the first region (44) and / or the second region (46) has a faceted surface.

Luminaire according to one of claims 4 to 9, wherein the first light source (2,40) is prepared in cooperation with the first region (44) for generating white and / or yellow light.

11. Luminaire according to one of claims 4 to 10, wherein the second light source (2,42) in cooperation with the second area (46) is prepared for generating white and / or yellow light.

Luminaire according to one of claims 1 to 11, wherein the second light source (2,42) is a turning light source, and the second operating mode is a turning light mode.

Luminaire according to one of claims 1 to 12, wherein the first light source (2,40) is a reversing light source, and the first operating mode is a Rückfahrlichtmo- dus.

14. Headlight with a lamp according to one of claims 1 to 13.

15. Motor vehicle headlight with a lamp according to one of claims 1 to 13.