LED light module

1. An LED light module ( 1 ) for a motor vehicle or for a headlight for a motor vehicle, wherein the light module ( 1 ) comprises a lens ( 2 ) and at least one primary LED light source ( 8 ), wherein, as viewed in the light outlet direction, a light tunnel ( 11 ) for the direct passage of at least a portion of the light emitted by the at least one primary LED light source ( 8 ) is provided between the at least one primary LED light source ( 8 ) and the lens ( 2 ), wherein the light, exiting through the light tunnel ( 11 ), of the at least one primary LED light source ( 8 ) is projected via the lens ( 2 ) into the region in front of the motor vehicle in order to produce a main lighting function or a contribution to a main lighting function,

characterised in that

the light tunnel ( 11 ) is a through-opening in a body ( 40 , 41 ), the body ( 40 , 41 ) at least partially comprising an optical transparent material, a holder ( 3 ) for holding the light tunnel ( 11 ) is provided, wherein the holder ( 3 ) is transparent at least in some areas, and wherein at least one secondary LED light source ( 9 ) is provided, which is arranged with respect to the light tunnel ( 11 ) in such a way that the light emitted by the at least one secondary LED light source ( 9 ) is emitted substantially onto the holder ( 3 ) and passes therethrough, wherein the light, passing through the holder ( 3 ), of the at least one secondary LED light source ( 9 ) is projected via the lens ( 2 ) into the region in front of the motor vehicle in order to produce a secondary light function, and wherein the wall ( 10 ′, 11 ′, 12 ′) delimiting the light tunnel ( 11 ) is light-reflective at least in some areas, wherein the at least one primary LED light source ( 8 ) and the at least one secondary LED light source ( 9 ) are coplanar.

2. The light module according to claim 1 , characterised in that the wall is light reflective at least in the area ( 10 ′) adjacent to the holder ( 3 ).

3. The light module according to claim 1 , characterised in that the at least one secondary LED light source ( 9 ) is arranged with respect to the light tunnel ( 11 ) in such a way that substantially no light flux of the at least one secondary LED light source ( 9 ) exits through the light tunnel ( 11 ).

4. The light module according to claim 1 , characterised in that the holder ( 3 ) is formed at least in some areas as a diffuser.

5. The LED light module according to claim 1 , characterised in that the entire area of the wall ( 10 ′, 11 ′, 12 ′) of the light tunnel ( 11 ) is light-reflective.

6. The LED light module according to claim 1 , characterised in that the wall ( 10 ′, 11 ′, 12 ′) of the light tunnel ( 11 ) is light-reflective at least in the wavelength range for visible light.

7. The LED light module according to claim 1 , characterised in that the wall ( 10 ′, 11 ′, 12 ′) of the light tunnel ( 11 ) is mirrored.

8. The LED light module according to claim 1 , characterised in that the wall ( 10 ′, 11 ′, 12 ′) of the light tunnel ( 11 ) is provided in some areas or over its entire area with a light-reflective layer.

9. The LED light module according to claim 8 , characterised in that the wall ( 10 ′, 11 ′, 12 ′) of the light tunnel ( 11 ) is/are vapour-coated in some areas or over the entire area with a light-reflective layer.

10. The light module according to claim 1 , characterised in that the light tunnel ( 11 ) and the holder ( 3 ) are formed in one piece.

11. The LED light module according to claim 1 , characterised in that the light tunnel ( 11 ) and/or the holder ( 3 ) has/have a two-part design, wherein the separation planes ( 3 a ′, 3 b ′) between the two holder parts ( 3 a , 3 b ) run through the light tunnel ( 11 ).

12. The LED light module according to claim 11 , characterised in that the two separation planes ( 3 a ′, 3 b ′) of the light tunnel ( 11 ) and/or the holder ( 3 ) are likewise light-reflective.

13. The LED light module according to claim 1 , characterised in that substantially the entire emitted, optically relevant light flux of the at least one primary LED light source ( 8 ) exits through the light tunnel ( 11 ) in order to produce the main lighting function.

14. The LED light module according to claim 1 , characterised in that the at least one secondary LED light source ( 9 ) or all secondary LED light sources ( 9 ) lie outside the optical axis ( 100 ) of the light module.

15. The LED light module according to claim 1 , characterised in that the at least one secondary LED light source ( 9 ) is arranged so as to be offset rearwardly with respect to the primary LED light source ( 8 ), against the light outlet direction.

16. The LED light module according to claim 1 , characterised in that the primary LED light source ( 8 ) comprises two or more light-emitting diodes ( 8 ′).

17. The LED light module according to claim 1 , characterised in that the at least one primary LED light source ( 8 ) and the at least one secondary LED light source ( 9 ) or the at least one light-emitting diode ( 8 ′) of the at least one primary LED light source ( 8 ) and the at least one light-emitting diode ( 9 ′) of the at least one secondary LED light source ( 9 ) can be controlled separately.

18. The LED light module according to claim 1 , characterised in that the at least one primary LED light source ( 8 ) is configured to be dimmed or switched off during operation of the at least one secondary LED light source ( 9 ).

19. The LED light module according to claim 1 , characterised in that, when the light module is installed in a vehicle headlight, n secondary LED light sources ( 9 ) are provided below a horizontal plane through the primary LED light source ( 9 ) in the vertical direction and m secondary LED light sources ( 9 ) are provided above the horizontal plane in the vertical direction, wherein m<n.

20. The LED light module according claim 19 , characterised by m=0.

21. The LED light module according to claim 19 , characterised in that the secondary LED light source(s) ( 9 ) is/are arranged above or below the horizontal plane, in each case symmetrically in the horizontal direction about a vertical plane through the optical axis ( 100 ).

22. The LED light module according to claim 19 , characterised in that further secondary LED light sources ( 6 ′, 7 ′) of the secondary light source are arranged laterally beside the primary LED light source ( 9 ).

23. The LED light module according to claim 1 , characterised in that the dimensions of the light tunnel ( 11 ) and/or the arrangement of the at least one primary LED light source ( 8 ) with respect to the light tunnel ( 11 ) and/or the distance of the at least one primary LED light source ( 8 ) from the holder ( 3 ) are selected in such a way that all light rays emitted by the at least one primary LED light source ( 8 ) lying within an angular aperture of the lens ( 2 ) can pass through the light tunnel ( 11 ).

24. The LED light module according to claim 1 , characterised in that the dimensions of the light tunnel ( 11 ) and/or the arrangement of the at least one secondary LED light source ( 9 ) with respect to the light tunnel ( 11 ) and/or the distance of the at least one secondary LED light source ( 9 ) from the holder ( 3 ) are selected in such a way that light rays from the at least one secondary LED light source ( 9 ) only reach those areas of the holder ( 3 ) lying outside the light tunnel ( 11 ).

25. The LED light module according to claim 24 , characterised in that the dimensions of the light tunnel ( 11 ) in the diffuser ( 3 ) and/or the arrangement of the at least one secondary LED light source ( 9 ) with respect to the light inlet opening ( 10 ) of the light tunnel ( 11 ) and/or the distance of the at least one secondary LED light source ( 9 ) from the holder ( 3 ) are selected in such a way that light rays from the at least one secondary LED light source ( 9 ) are radiated as far as the edge of the light inlet opening ( 10 ) of the light tunnel ( 11 ).

26. The LED light module according to claim 1 , characterised in that the light tunnel ( 11 ) is filled with an optically transparent material.

27. A vehicle headlight comprising at least one light module according to claim 1 .

28. The LED light module according to claim 1 , wherein the light tunnel ( 11 ) is formed from a material that is transparent over the entire area, and/or wherein the holder ( 3 ) is transparent over the entire area.

29. The LED light module according to claim 12 , wherein the two separation planes ( 3 a ′, 3 b ′) are totally light-reflective.

30. The LED light module according to claim 12 , wherein the two separation planes ( 3 a ′, 3 b ′) are provided with a vapour coated light-reflective layer.

31. The LED light module according to claim 26 , wherein the optically transparent material is transparent in the range of visible light.

32. The LED light module according to claim 26 , wherein the optically transparent material comprises silicone.