CN109668076B - Combined lamp for motor vehicle - Google Patents

Combined lamp for motor vehicle Download PDF

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Publication number
CN109668076B
CN109668076B CN201811179892.0A CN201811179892A CN109668076B CN 109668076 B CN109668076 B CN 109668076B CN 201811179892 A CN201811179892 A CN 201811179892A CN 109668076 B CN109668076 B CN 109668076B
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China
Prior art keywords
light
diffuser layer
emitting
emitting elements
area
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CN201811179892.0A
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Chinese (zh)
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CN109668076A (en
Inventor
H·格列尼克
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Puri Ltd
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Puri Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
    • B60Q3/14—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards lighting through the surface to be illuminated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/74—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/78—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for generating luminous strips, e.g. for marking trim component edges
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/08—Optical design with elliptical curvature
    • 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
    • F21S43/40—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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2106/00—Interior vehicle lighting devices
    • 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
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to a combination luminaire (1) comprising: a diffuser layer (2); light-emitting elements (3) arranged to backlight their light (L1, L2) to the diffuser layer (2); a preferably elliptical reflector (4) arranged between the diffuser layer (2) and the light emitting elements (3); wherein a spatial first partial region (5a) of the spatial light intensity distribution (5) of the light-emitting elements (3) is used for direct backlighting of the diffuser layer (2), and a second partial region (5b) of the spatial light intensity distribution (5) of the light-emitting elements (3) located outside the first partial region (5a) is focused by means of an elliptical reflector (4) in the direction of the diffuser layer (2), preferably on the diffuser layer (2).

Description

Combined lamp for motor vehicle
Technical Field
The invention relates to a combination lamp for a motor vehicle, having an integrated space lighting and an integrated directional lighting. Space lighting (also referred to as ambient lighting) is used in motor vehicles in order to roughly determine the orientation of the motor vehicle for passengers in the dark. In this case, generally, low-intensity and/or indirect lighting is used in order to illuminate the surroundings of the driver, for example the area of the door panel, center console or instrument panel, in which the driver is largely not obscured by the light source itself or the reflected light. For example, space lighting is provided to illuminate the foot space of the vehicle compartment.
The aim of directional lighting is, on the other hand, to provide the driver with visual directional assistance by means of a luminous directional point of relatively high light intensity by directly observing the directional point. The directional lighting fixture is preferably used to make it easier for the driver to find the operating element, for example by means of a lighting surface, for example a so-called corona lighting, which defines or surrounds the operating surface of the operating element.
Background
Space lighting has been structurally separated so far and achieved independently of directional lights in vehicle construction. In vehicle construction, however, efforts are often made to achieve a high degree of integration in order to reduce installation space and weight, in particular in order to save energy.
Disclosure of Invention
Against this background, there is a need for a combination luminaire with integrated space lighting and directional lighting, which in particular has a high degree of integration. This object is achieved by the combination luminaire according to the invention. It should be pointed out that the features described individually in the present invention can be combined with one another in any technically meaningful way and represent further embodiments of the invention. The invention has been additionally characterized and explained in detail in the description, particularly with reference to the figures.
The invention relates to a combined lamp. A combination luminaire is to be understood as a luminaire having a diffuser layer (also referred to simply as diffuser) which is backlit by the light-emitting elements, so that the latter have different light-emitting areas. By different light emitting areas are understood a plurality of light emitting areas which differ significantly in terms of brightness and/or outer dimensions of the respective backlight areas. For example, a first light-emitting region that functions as space illumination and a second light-emitting region that functions as directional illumination are provided. The second light emitting region has, for example, higher luminance than the first light emitting region. It is also preferable that the second light emitting region is larger than the first light emitting region in terms of a surface size backlit by the light emitting element.
A diffuser layer according to the present invention refers to a layer having a scattered light channel through which light passes. This passage of scattered light is achieved, for example, by embedding optical brighteners or light scattering particles in the material of the diffuser layer.
According to the invention, a light-emitting element is also provided, which is arranged such that its light backlights the diffuser. It preferably refers to a light-emitting element, such as a light-emitting diode, having a substantially symmetrical, preferably substantially rod-shaped, light intensity distribution, that is to say an illumination characteristic. The light emitting element is preferably configured in a linear shape, or the light emitting element is configured by a plurality of light sources arranged along a line.
According to the invention, a reflector is also provided, which is arranged between the diffuser layer and the light-emitting elements. The reflector is preferably designed as an ellipse, i.e. its reflection surface is described by an ellipse equation with respect to the spatial axis.
According to the invention, a first partial region of the spatial light intensity distribution of the light-emitting elements is used for direct backlighting of the diffuser layer, while a second partial region of the spatial light intensity distribution of the light-emitting elements, which is located outside the first partial region, is focused on the diffuser layer by means of the reflector.
By using two different local areas of the light irradiation of the light-emitting elements for different backlighting of the diffuser layer, on the one hand for focused backlighting and on the other hand for planar backlighting, a combined luminaire can be realized with relatively few components.
According to a preferred embodiment provision is made wherein the diffuser layer has a first light-emitting area which is mainly, preferably only, backlit by the first partial area of the spatial light intensity distribution. The brightness achieved by the first partial area in the first light-emitting area refers to the backlighting achieved in the first light-emitting area mainly by said first partial area, which is higher than the brightness of the backlighting achieved in the same light-emitting area by the remaining partial area or areas. In this embodiment a second light emitting area of the diffuser layer is also provided, which is backlit by said second partial area and the first partial area, preferably predominantly backlit by said second partial area of said spatial light intensity distribution. The brightness achieved in the second light-emitting area by the second partial area refers to the backlighting achieved in the second light-emitting area predominantly by said second partial area, which is higher than the brightness of the backlighting achieved in the same light-emitting area by the remaining partial area or areas.
According to a preferred embodiment of the combination luminaire, the first light-emitting area of the diffuser layer has a layer thickness which increases with a spatial decrease of the light intensity of the spatial light intensity distribution. The layer thickness refers to the spacing between the light input face of the diffuser layer facing the light emitting elements and the light output face facing away from the light emitting elements.
The diffuser layer is not formed, for example, as a plane-parallel plate, but rather the first light-emitting region of the diffuser layer has a wedge-shaped cross section (that is to say, viewed in a direction perpendicular to the illumination direction) and has, for example, an increasing layer thickness with increasing distance from the light-emitting elements, preferably with increasing distance from the reflective elements and light-emitting elements.
The diffuser layer preferably has a transmission structure in its second light-emitting area in order to increase the brightness in the second light-emitting area. Transmission structures are understood, for example, as surface structures, preferably in the surface of the diffuser layer facing the light-emitting elements, which cause multiple reflections of the light rays irradiated by the light-emitting elements. It refers, for example, to a depression or a projection, in particular one or more basin-like or groove-like depressions. For this purpose, the transmission structure of the diffuser layer is preferably arranged in the main emission direction of the light-emitting elements, i.e. in the direction of the maximum light intensity of the light intensity distribution of the light-emitting elements.
The transmitting structure of the diffuser layer is arranged in one of the two focal points or, according to an elliptical reflector configuration, on one of the two focal lines of an elliptical reflector. The light-emitting elements are arranged, for example, at the remaining focal points or at the remaining focal lines.
The invention also relates to the use of the combination lamp, in particular as part of an operating element in a motor vehicle. It is for example arranged such that the second light emitting area comprising the transmission structure defines a boundary or circumferential contour of the contact surface.
Drawings
The invention is explained in detail with the aid of the following figures. The drawings are exemplary only, and are intended to represent only one preferred embodiment. Wherein:
fig. 1 shows an embodiment of a combination luminaire 1 according to the invention in a sectional view.
Detailed Description
Fig. 1 shows an embodiment of a combination luminaire 1 according to the invention. The combination luminaire 1 has a light-emitting element 3, which is defined in an SMD-like manner by a plurality of light sources arranged along a line, which are in the form of light-emitting diodes. The light-emitting element 3 has an emission characteristic which is dependent on its light emission, which is represented by the spatial light intensity distribution 5 and is schematically illustrated in fig. 1 by a rod-shaped distribution in cross-section. Here, the angular dependence of the light intensity of the light-emitting element 3 is schematically shown. In this case, the light intensity distribution 5 is symmetrical and defines the main emission direction H by its maximum light intensity.
The light emitting elements 3 are arranged such that they backlight a planar diffuser layer 2. Here, the surface 7 facing the light-emitting elements 3 constitutes the light entry surface of the diffuser layer 2 as one of the two main surfaces of the diffuser layer 2, while the surface 8 of the diffuser layer 2 facing away from the light-emitting elements 3 is the associated light exit surface for the light rays L3 diffused in or by the diffuser layer 2.
Between the diffuser layer 2 and the light-emitting elements 3, an elliptical reflector 4 is arranged, which is in the form of a trench-like mirror surface that forms the boundary of the free space between the diffuser layer 2 and the light-emitting elements 3 from the lateral sides. The light L1 of the first spatially partial region 5a of the light intensity distribution 5 of the light-emitting elements 3 is used for directly backlighting the diffuser layer 2, and the elliptical reflector 4 is arranged such that the second spatially partial region 5b of the light intensity distribution 5 (as described by the light beam L2) is focused by means of the reflector 4 in the direction of the diffuser layer 2 and is focused in the form of indentations on the transmission structure 6 formed by the diffuser layer. For this purpose, the transfer structure 6 is located on the focal line f1 of the two focal lines f1 and f2, while the light-emitting element 3 is arranged on the other focal line f2 of the two focal lines f1 and f 2.
At the same time, the transmission structure 6 is arranged such that it is directly (i.e. non-reflectively on the reflector 4) backlit by light rays of the main emission direction H of the light-emitting elements 3.
The diffuser layer 2 is furthermore arranged in such a way that it has a first light-emitting area 2a and a second partial area 2b, the first light-emitting area 2a being backlighted only by the first partial area 5a of the spatial light intensity distribution 5, and the second light-emitting area 2b being backlighted by the second partial area 5b and the first partial area 5a, but here being backlighted mainly by the second partial area 5b of the spatial light intensity distribution 5 of the light-emitting elements. The transfer structure 6 is disposed within the second light emitting area 2 b. The first light-emitting area (2a) of the diffuser layer 2 is larger in planar dimensions than the second light-emitting area 2b and has a wedge-shaped cross-section with its layer thickness D increasing with increasing spacing from the light-emitting elements 3 and the reflector 4.
Therefore, the first light-emitting area 2a is used to realize space illumination, the luminance of which decreases as the pitch of the light-emitting element 3 and the reflector increases. And the second light emitting regions 2b having the transmission structure 6 and relatively high brightness are used to realize directional illumination, the reason why the brightness is high is that: direct backlighting is achieved by the light rays of the main emission direction H of the first partial region 5a, and additional backlighting is achieved by means of the focused light rays received via the reflector 4. A combination light fixture is thus provided with relatively few parts, which provides both spatial and directional lighting.

Claims (9)

1. A combination luminaire (1) comprising:
a diffuser layer (2);
light-emitting elements (3) arranged such that their light L1, L2 backlights the diffuser layer (2);
an elliptical reflector (4) arranged between the diffuser layer (2) and the light emitting elements (3);
wherein a spatial first partial region (5a) of a spatial light intensity distribution (5) of the light-emitting elements (3) is used for direct backlighting of the diffuser layer (2), and
a second partial region (5b) of the spatial light intensity distribution (5) of the light-emitting elements (3) lying outside the first partial region (5a) is focused on the diffuser layer (2) by means of the elliptical reflector (4) in the direction of the diffuser layer (2), characterized in that the diffuser layer (2) has a first light-emitting area (2a), the first light-emitting region (2a) is backlit only by a first partial region (5a) of the spatial light intensity distribution (5), wherein the first light-emitting region (2a) has a layer thickness D which increases with increasing distance from the light-emitting element (3), wherein the layer thickness D increases in a direction opposite to a main emission direction H of the light-emitting element (3), the main emission direction H is the direction of maximum light intensity of the light intensity distribution of the light-emitting element (3).
2. A combination luminaire (1) according to claim 1, wherein the diffuser layer (2) further has a second light emitting area (2b), the second light emitting area (2b) being backlit by a second partial area (5b) and a first partial area (5a) of the spatial light intensity distribution (5) or by a second partial area (5b) of the spatial light intensity distribution (5).
3. Combination luminaire (1) according to claim 2, wherein the first light emitting area (2a) is larger than the second light emitting area (2b), respectively, in terms of backlit surface size.
4. Combination light fixture (1) according to claim 1, wherein the cross-section of the first light emitting area (2a) is wedge-shaped.
5. A combination luminaire (1) according to claim 2, wherein the diffuser layer (2) has a transmission structure (6) in its second light emitting area (2b) for increasing the brightness, comprising a surface structure generating multiple reflections.
6. A combination luminaire (1) according to claim 5, wherein the transmission structure (6) of the diffuser layer (2) is arranged in a main emission direction H of the light-emitting elements (3).
7. A combination luminaire (1) according to claim 5, wherein the transmitting structure (6) of the diffuser layer (2) is arranged on one of the two focal points of the elliptical reflector (4) or on one of the two focal lines f1, f2 f 1.
8. Combination luminaire (1) according to claim 1, wherein the light-emitting elements (3) are configured in a linear manner or are defined by a plurality of light sources arranged along a line.
9. Combination light fixture (1) according to claim 1 for use in a motor vehicle as part of an operating element.
CN201811179892.0A 2017-10-13 2018-10-10 Combined lamp for motor vehicle Active CN109668076B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017123837.9 2017-10-13
DE102017123837.9A DE102017123837B4 (en) 2017-10-13 2017-10-13 Combination light for a motor vehicle

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CN109668076A CN109668076A (en) 2019-04-23
CN109668076B true CN109668076B (en) 2021-07-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8705307U1 (de) * 1987-04-09 1987-05-27 Hella KG Hueck & Co., 59557 Lippstadt Innenleuchte für Kraftfahrzeuge
CN101326400A (en) * 2005-12-12 2008-12-17 皇家飞利浦电子股份有限公司 Led collimator element for a vehicle headlight with a low-beam function
CN202048499U (en) * 2011-02-28 2011-11-23 佛山市南海宝照科技有限公司 Remotely-controlled variable-color refraction LED (light-emitting diode) decoration lamp
DE102010032946A1 (en) * 2010-07-30 2012-02-02 Hella Kgaa Hueck & Co. Motor car has upper light source and lower light source comprising flat organic LED, where upper light source is arranged transverse to main emission direction
DE102011085226A1 (en) * 2011-10-26 2013-05-02 Lisa Dräxlmaier GmbH lighting element

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10129953A1 (en) * 2001-06-21 2003-01-16 Hella Kg Hueck & Co Light for vehicle interior has largest light component of light radiated by light conductor incident in main radiation direction first on reflector and from there to light panel
DE10259236A1 (en) * 2002-12-17 2004-07-01 Hella Kg Hueck & Co. Automobile interior light with different light sources for different lighting functions e.g. interior illumination and ambient lighting
DE102006017960A1 (en) * 2006-04-13 2007-10-25 Hella Kgaa Hueck & Co. Motor vehicle`s interior panel for ambient lighting of door mirror, has interior panel part with surface area at which light emitted by lighting unit is not reflected or only reflects badly in direction of interior-sub

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8705307U1 (de) * 1987-04-09 1987-05-27 Hella KG Hueck & Co., 59557 Lippstadt Innenleuchte für Kraftfahrzeuge
CN101326400A (en) * 2005-12-12 2008-12-17 皇家飞利浦电子股份有限公司 Led collimator element for a vehicle headlight with a low-beam function
DE102010032946A1 (en) * 2010-07-30 2012-02-02 Hella Kgaa Hueck & Co. Motor car has upper light source and lower light source comprising flat organic LED, where upper light source is arranged transverse to main emission direction
CN202048499U (en) * 2011-02-28 2011-11-23 佛山市南海宝照科技有限公司 Remotely-controlled variable-color refraction LED (light-emitting diode) decoration lamp
DE102011085226A1 (en) * 2011-10-26 2013-05-02 Lisa Dräxlmaier GmbH lighting element

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DE102017123837B4 (en) 2020-06-04
CN109668076A (en) 2019-04-23
DE102017123837A1 (en) 2019-04-18

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