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DE-102016205408-B4 - Light for a motor vehicle

DE102016205408B4DE 102016205408 B4DE102016205408 B4DE 102016205408B4DE-102016205408-B4

Abstract

Lamp for a motor vehicle (1), comprising a lamp (4) for emitting light and several translucent optical elements (3) which are arranged behind a translucent lens (5) through which the light exits from the lamp (2) at least partially at the rear or front of the motor vehicle (1), - wherein each optical element (3) has a first and a second side surface (301, 302) as well as a first and second end surface (303, 304), wherein the first and second end surface (303, 304) extend between the first and second side surface (301, 302); - wherein the outside of the respective optical element (3) in the area of the first side surface (301) points away from the light disk (5) and the outside of the respective optical element (3) in the area of the second side surface (302) points towards the light disk (5); - wherein the first end face (303) is located at an end adjacent to the light disk (5) and the second end face (304) is located at an end of the respective optical element (3) located away from the light disk (5); - wherein the luminaire (2) is designed such that at least part of the light from the light source (4) enters the respective optical element (3) via the second end face (304), wherein part of the entering light is coupled out of the respective optical element (3) via a first output coupling structure on the first side face (301) and exits the respective optical element (3) via the second side face (302), and wherein part of the entering light is coupled out of the respective optical element (3) via a second output coupling structure on the first end face (303) and exits the respective optical element (3) via the second side face (302); - wherein the optical elements (3) are arranged side by side and spaced apart from each other in one direction along the light disk.

Inventors

  • Tina Hemschik
  • Thorsten Krajc

Assignees

  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20160401

Claims (17)

  1. Lamp for a motor vehicle (1), comprising a light source (4) for emitting light and several translucent optical elements (3) arranged behind a translucent lens (5) through which the light exits the lamp (2) at least partially at the rear or front of the motor vehicle (1), - wherein each optical element (3) has a first and a second side surface (301, 302) and a first and second end surface (303, 304), the first and second end surfaces (303, 304) extending between the first and second side surfaces (301, 302); - wherein the outer surface of each optical element (3) faces away from the lens (5) in the region of the first side surface (301) and the outer surface of each optical element (3) faces the lens (5) in the region of the second side surface (302); - wherein the first end face (303) is located at an end adjacent to the light disk (5) and the second end face (304) is located at an end of the respective optical element (3) located away from the light disk (5); - wherein the luminaire (2) is configured such that at least a portion of the light from the light source (4) enters the respective optical element (3) via the second end face (304), wherein a portion of the incoming light is coupled out of the respective optical element (3) via a first output coupling structure on the first side face (301) and exits the respective optical element (3) via the second side face (302), and wherein a portion of the incoming light is coupled out of the respective optical element (3) via a second output coupling structure on the first end face (303) and exits the respective optical element (3) via the second side face (302); - wherein the optical elements (3) are arranged side by side and spaced apart from each other in one direction along the light disk.
  2. Light after Claim 1 , characterized in that the optical elements (3) overlap each other when looking towards the light (2) in the longitudinal direction of the motor vehicle (1).
  3. Light after Claim 1 or 2 , characterized in that the luminaire (2) is designed such that when the luminaire (2) is switched on, the luminance of the first end face (303) is higher than the luminance of the first side face (301).
  4. Luminaire according to one of the preceding claims, characterized in that the luminaire (2) is designed such that when the luminaire (2) is switched on, its luminous intensity in a predetermined angular range about a longitudinal axis which runs in the longitudinal direction (L) of the motor vehicle and through the center of brightness of the switched-on luminaire (2) is greater than zero and in particular greater than a predetermined positive value.
  5. Light after Claim 4 , characterized in that the light (2) is provided for arrangement on an edge of the rear or front of the motor vehicle (1), wherein the edge is the left or right edge of the motor vehicle (1) and wherein the specified angular range is defined as follows: - the specified angular range extends in the lateral direction of the motor vehicle (1) starting from the longitudinal axis 80° towards the edge and 45° away from the edge; - the specified angular range extends in the vertical direction of the motor vehicle (1) starting from the longitudinal axis 15° upwards and 15° downwards.
  6. Luminaire according to one of the preceding claims, characterized in that the luminaire (2) comprises a tail light and/or a turn signal and/or a brake light and/or a reversing light.
  7. Lamp according to one of the preceding claims, characterized in that the lamp (2) is divided into two parts by an access flap (7) at the rear of the motor vehicle (1).
  8. Luminaire according to one of the preceding claims, characterized in that the first coupling structure and/or the second coupling structure comprises a prism arrangement and/or a textured or roughened surface, in particular with a roughness corresponding to VDI 3400 reference 25 or higher.
  9. Luminaire according to one of the preceding claims, characterized in that the second side surface (302) is a light-scattering surface, in particular with a roughness corresponding to VDI 3400 reference 25 or higher.
  10. Luminaire according to one of the preceding claims, characterized in that each optical element (3) is an elongated element, wherein the longitudinal direction of each optical element (3) extends along the first and second side surfaces (301, 302) and between the first and second end surfaces (303, 304).
  11. Luminaire according to one of the preceding claims, characterized in that the first and second side surfaces (301, 302) of the respective optical element (3) run parallel to each other or converge towards each other in the direction of the light disk (5).
  12. Luminaire according to one of the preceding claims, characterized in that in a respective optical element (3) the first end face (303) extends obliquely from the first to the second side face (301, 302) and/or that the first end face (303) extends obliquely to the vertical direction of the motor vehicle (1) from a lower end in the vertical direction of the motor vehicle (1) to an upper end in the vertical direction of the motor vehicle of the first end face (303).
  13. Luminaire according to one of the preceding claims, characterized in that at least some optical elements (3) of the luminaire (2) are part of the same integral component (300).
  14. Luminaire according to one of the preceding claims, characterized in that at least some adjacent optical elements (3) of the luminaire (2) are connected to each other via bridges (305), wherein the bridges (305) are preferably opaque.
  15. Light after Claim 14 , characterized in that for a respective optical element (3) with adjacent webs (305) the part of the first and/or second side surface (301, 302) which lies behind the webs (305) in the direction towards the second end surface (304) is opaque at least in partial areas.
  16. Luminaire according to one of the preceding claims, characterized in that the luminaire (2) comprises one or more reflectors (6) which direct the light from the light source (4) at least partially onto the second end face (304).
  17. Motor vehicle, characterized in that the motor vehicle comprises one or more lights according to one of the preceding claims.

Description

The invention relates to a lamp for a motor vehicle and a corresponding motor vehicle. Many different designs for automotive lights are known from the current state of the art. The use of new technologies, such as LEDs and OLEDs, has significantly increased the design possibilities for automotive lights. In the document DE 10 2009 021 110 A1 A rear light of a motor vehicle is described as consisting of several chambers in which at least two differently colored light sources are arranged. The light sources are preferably light-emitting diodes (LEDs). The printed matter DE 10 2011 119 230 A1 reveals an LED flashing light for a motor vehicle, in which the direction of travel to be indicated is emphasized by a running light effect. In the document DE 10 2013 225 796 A1 A lighting unit for a motor vehicle is disclosed, comprising an OLED that is directly applied to the lens of the lighting unit. The lens may be provided with a decorative coating on the side of the light emission. The printed matter DE 10 2012 221 389 A1 The disclosure relates to a motor vehicle lamp with a light source, a light guide having an output volume bounded by a first side and a second side opposite the first side, wherein the second side has output elements that distribute light around a main emission direction, and wherein the motor vehicle lamp has a black aperture arranged behind the second side in a direction opposite to the main emission direction. The printed matter DE 10 2013 009 460 A1 Disclosing a luminaire for a vehicle, comprising a light guide arrangement for generating a driving light function and at least one light source, the light guide arrangement includes at least two light guides. A first light guide has a light coupling surface, a light coupling surface, and a reflecting surface. Light generated by the light source can be coupled into the first light guide at the light coupling surface, and the coupled light can be guided through the first light guide to the reflecting surface and reflected thereon. The reflected light can be coupled out at the light coupling surface and generates the driving light function. The printed matter DE 20 2015 001 890 U1 Disclosing a light guide arrangement for a vehicle light, comprising a plurality of light guides, each light guide having a light coupling section with a light coupling surface for coupling light into the light guide through the light coupling surface, and a light coupling section through which light guided in the light guide can be coupled out. A transition section is provided between the light coupling section and the light coupling section, and the light guides are arranged side by side such that the light coupling surfaces are arranged in a row along a light coupling line and the light guides extend away from the light coupling line. The printed matter US 2008/0 013 333 A1 A vehicle light comprises one or more LEDs, a reflector with a reflective surface that reflects light from the one or more LEDs forward of the light, and one or more flat, plate-like light guides onto which the light from the one or more LEDs is incident from one side and which emit the light forward from the other side. Light in the region of the optical axis of the one or more LEDs falls onto the light guides, while other light is reflected by the reflective surface of the reflector, so that part of the light from the one or more LEDs is emitted through the light guides and another part of the light is reflected and emitted by the reflector. The object of the invention is to create a light for a motor vehicle which generates a clearly perceptible and conspicuous light distribution in a novel way. This problem is solved by the luminaire according to claim 1. Further developments of the invention are defined in the dependent claims. The lamp according to the invention is intended for use in a motor vehicle, such as a passenger car. It comprises a light source for emitting light, in particular one or more LEDs and optionally also one or more laser diodes, as well as several translucent optical elements, which are preferably made of plastic and in particular of PMMA (polymethyl methacrylate) or PC (polycarbonate). Here and in the following, the term "translucent" is to be understood as a transmittance greater than zero and in particular of 50% or more and optionally also 100%. The optical elements are arranged behind a translucent lens, through which the light exits the lamp at least partially at the rear or front of the vehicle. This occurs. In other words, the light is a rear light or a front light in a motor vehicle. Where the present description and the patent claims describe relations/relationships between the light and the motor vehicle or to directions defined in relation to the motor vehicle, this is always to be understood as meaning that the relation occurs when the light is arranged or installed in the motor vehicle. The light is thus designed such that the relation exists when the light is