Lighting device for a headlight

Abstract

A lighting device for a headlight includes a light-emitting element carrier having a longitudinal direction. At least one low-light-emitting element, at least one high-light-emitting element, and at least one position light-emitting element are arranged at the light-emitting element carrier. The at least one position light-emitting element is arranged, in respect of the longitudinal direction, in a front facing end zone of the light-emitting element carrier, and the at least one low-light-emitting element and the at least one high-light-emitting element in respect of the longitudinal direction are arranged behind the at least one position light-emitting element.

Claims

1. A lighting device for a headlight, comprising: a light-emitting element carrier having a longitudinal direction; at least one low-beam-emitting element and at least one high-beam-emitting element arranged at the light-emitting element carrier; and at least one two position light-emitting elements arranged at the light-emitting element carrier, wherein the at least one two position light-emitting elements are arranged in a front facing end zone of the light-emitting element carrier with respect to the longitudinal direction, and that the at least one low-beam-emitting element and the at least one high-beam-emitting element in respect of the longitudinal direction are arranged behind the at least two position light-emitting elements with respect to the longitudinal direction, wherein the at least two position light-emitting elements are respectively arranged on opposite surfaces of the light-emitting element carrier; and wherein a reflecting optic element is arranged in the front facing end zone and at the at least two position light-emitting elements such that light distributions of the at least two position light-emitting elements can be influenced by the reflecting optic element, and such that the at least two light-emitting elements are shielded from the at least one low-beam-light-emitting element and the at least one high-beam-emitting element.

2. The lighting device according to claim 1, wherein a transmitting optic element is arranged in the front facing end zone and around the at least two position light-emitting elements, wherein light distributions of the at least two position light-emitting elements can be influenced by the transmitting optic element.

3. The lighting device according to claim 1, wherein the at least one low-beam-emitting element and the at least one high-beam-emitting element are arranged on two opposite sides of the light-emitting element carrier or are arranged offset from one another with respect to the longitudinal direction.

4. The lighting device according to claim 1, further comprising a heat sink, wherein the light-emitting element carrier is arranged at the heat sink so that the front facing end zone of the light-emitting element carrier is facing away from the heat sink with respect to the longitudinal direction.

5. The lighting device according to claim 1, further comprising: a heat sink; and a heat-conducting member arranged at the light-emitting element carrier and connected with the heat sink such that heat can be conducted from the light-emitting element carrier into the heat sink.

6. The lighting device according to claim 1, further comprising: a heat sink; and a circuit board, wherein the at least one low-beam-emitting element or the at least one high-beam-emitting element or the at least two position light-emitting elements are arranged on the circuit board.

7. The lighting device according to claim 4, further comprising: a heat-conducting member arranged at the light-emitting element carrier and connected with the heat sink such that heat can be conducted from the light-emitting element carrier into the heat sink; and a circuit board, wherein a first heat-conducting component comprises a top part of the heat sink and a top part of the heat-conducting member, and a second heat-conducting component comprises a bottom part of the heat sink and a bottom part of the heat-conducting member.

8. The lighting device according to claim 1, wherein the at least one low-beam-emitting element, the at least one high-beam-emitting element or the at least two position light-emitting elements are in the form of semi-conductor light sources, or radiate white light during operation.

9. A headlight comprising the lighting device according to claim 1, wherein the headlight has a reflector, wherein light of the at least one low-beam-emitting element or of the at least one high-beam-emitting element or of the at least two position light-emitting elements is reflected at the reflector during operation.

10. The headlight according to claim 9, wherein the reflector has a passage, wherein the light-emitting element carrier projects through the passage in a state of being mounted, or the light-emitting element carrier is arranged in an interior generated by the reflector, or a heat sink is arranged outside of an interior generated by the reflector.

11. The headlight according to claim 9, wherein the at least one low-beam-emitting element is arranged at a first side of the light-emitting element carrier such that its light can be reflected exclusively from a first half of the reflector, or the at least one high-beam-emitting element is arranged at a second side of the light-emitting element carrier such that its light can be reflected exclusively from a second half of the reflector, or the at least two position light-emitting elements are respectively arranged at a first side and a second side of the light-emitting element carrier such that light therefrom can be reflected from a first half of the reflector and a second half of the reflector, respectively.

12. A one-track vehicle comprising the headlight according to claim 9.

13. A method for manufacturing the lighting device according to claim 7, the method comprising: arranging the first heat-conducting component at a first side of the circuit board; arranging the second heat-conducting component at a second side of the circuit board, the first and second sides being opposite sides of the circuit board; and attaching the first heat-conducting component to the second heat-conducting component, wherein the circuit board is held between the first and second heat-conducting components.

14. A method for manufacturing the headlight according to claim 9, wherein the light-emitting element carrier is led through a passage in the reflector and is attached at a fixing interface at the reflector.

15. The lighting device according to claim 2, wherein the transmitting optic element is in the form of a diffuser, or has a vertical ribbing, or has cylindrical lenses that are lined up.

16. The lighting device according to claim 3, wherein the reflecting optic element has a concave outline, or the reflecting optic element is arranged behind the at least two position light-emitting elements with respect to the longitudinal direction, or the reflecting optic element is made of a heat-conducting material.

17. The lighting device according to claim 4, wherein the heat sink has cooling ribs, or a control device is arranged in the heat sink.

18. The lighting device according to claim 5, wherein the heat-conducting member is connected with the heat sink in one piece, or the at least one low-beam-emitting element or the at least one high-beam-emitting element or the at least two position light-emitting elements is arranged in a recess of the heat-conducting member and is covered or enclosed by the heat-conducting member, or the heat-conducting member has a narrowing in an area of the at least one low-beam-emitting element or the at least one high-beam-emitting element such that surfaces of the light-emitting elements essentially run even with a surface of the heat-conducting member, or the heat-conducting member, in the front facing end zone, has a concave outline that serves as reflecting optic element for the at least two position light-emitting elements.

19. The lighting device according to claim 6, wherein the circuit board projects from the heat sink into the light-emitting element carrier, wherein the circuit board extends through the entire light-emitting element carrier in the longitudinal direction, or a control device is arranged at the circuit board.

20. The lighting device according to claim 7, wherein the circuit board is arranged between the first heat-conducting component and the second heat-conducting component, or the first heat-conducting component and the second heat-conducting component can be attached to each other by a screw, or the at least one low-beam-emitting element is arranged in a first recess of the first heat-conducting component and the at least one high-beam-emitting element is arranged in a second recess of the second heat-conducting component.

21. The lighting device according to claim 8, wherein the at least one low-beam-emitting element, the at least one high-beam-emitting element or the at least two position light-emitting elements are in the form of light-emitting diodes or laser diodes.

22. The headlight according to claim 9, wherein the at least one reflector is a concave reflector.

23. The headlight according to claim 11, wherein the first side of the light-emitting element carrier is a top side of the light-emitting element carrier, the second side of the light-emitting element carrier is a bottom side of the light-emitting element carrier, the first half of the reflector is a top half of the reflector, and the second half of the reflector is a bottom half of the reflector.

24. The one-track vehicle according to claim 12, wherein the one-track vehicle is a motorcycle, and wherein the headlight is used as front headlight.

25. The method according to claim 13, wherein the first heat-conducting component is attached to the second heat-conducting component by a fixing means.

26. The method according to claim 14, wherein the fixing interface is suitable for halogen lamps.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further preferred embodiments and details are shown in the Figures:

(2) FIG. 1a shows a headlight with a lighting device in a lateral sectional view

(3) FIG. 1b shows a headlight with a lighting device is a sectional view from the top

(4) FIG. 2 shows light-emitting element carriers in a sectional view from the side

(5) FIG. 3a shows a lighting device in a perspective view

(6) FIG. 3b shows a lighting device in a front view

(7) FIG. 4a shows a lighting device in a plan view

(8) FIG. 4b shows a lighting device in a lateral view

DETAILED DESCRIPTION OF THE INVENTION

(9) The FIGS. 1a and 1b show sectional views of a headlight 13 with a lighting device 12.

(10) Such a headlight 13 can for example be used for a one-track vehicle, in particular a motorcycle. In particular, such a headlight 13 can be used as front headlight.

(11) The headlight 13 has a concave reflector 11, wherein, during operation, light of the at least one low-light-emitting element 4 and/or the at least one high-light-emitting element 5 and/or the at least one position light-emitting element 6 is reflected at the reflector 11.

(12) The at least one low-light-emitting element 4, the at least one high-light-emitting element 5 and/or the at least one position light-emitting element 6 are in the form of semi-conductor light sources, in particular light-emitting diodes or laser diodes. It is provided that they emit white light during operation.

(13) FIG. 2 shows a detailed view of the view in FIG. 1a, wherein the lighting device 12, in particular the light-emitting element carrier 14 of the lighting device 12, is shown in detail.

(14) Details regarding the headlight 13, the lighting device 12 and the light-emitting element carrier 14 are explained in the following by means of the FIGS. 1a, 1b and 2.

(15) The light-emitting element carrier 14 has a longitudinal direction L. In particular, the light-emitting element carrier can be designed columnar or rod-like.

(16) At least one low-light-emitting element 4, at least one high-light-emitting element 5 and least one position light-emitting element 6 are arranged at the light-emitting element carrier 14. The at least one position light-emitting element 6 is arranged, in respect of the longitudinal direction L, in a front facing end zone 15 of the light-emitting element carrier 14. In addition, the at least one low-light-emitting element 4 and the at least one high-light-emitting element 5 are arranged, in respect of the longitudinal direction L, behind the at least one position light-emitting element 6.

(17) The at least one low-light-emitting element 4 is arranged at a first, in particular at a top, side of the light-emitting element carrier 14 so that its light is reflected exclusively from a first, in particular a top, half of the reflector 28.

(18) The at least one high-light-emitting element 5 is arranged at a second, in particular at a bottom, side of the light-emitting element carrier 14 so that its light is reflected exclusively from a second, in particular a bottom, half of the reflector 29.

(19) The at least one position light-emitting element 6 is arranged at a first, in particular at a top, side and at a second, in particular at a bottom, side of the light-emitting element carrier 14 so that its light can be reflected from a first, in particular a top, half of the reflector 28 and/or from a second, in particular a bottom, half of the reflector 29.

(20) The reflector 11 can have several facets in its top half of the reflector 28 and/or its bottom half of the reflector 29, by which the light distribution can be influenced.

(21) The top half of the reflector 28 can have a form and/or size differing from the form and/or size of the bottom half of the reflector 29, as shown in FIG. 1a.

(22) The at least one low-light-emitting element 4 and the at least one high-light-emitting element 5 are arranged on two opposite sides of the light-emitting element carrier 14. Furthermore, the at least one low-light-emitting element 4 and the at least one high-light-emitting element 5 arranged in the longitudinal direction L offset to one another. This way, a part of the heat-conducting member 30, which is described in further detail further below, is also arranged in an area opposite of each respective light-emitting element 4, 5, by which heat can be dissipated more easily.

(23) At least two position light-emitting elements 6a, 6b are provided that are arranged on two opposite sides of the light-emitting element carrier 14.

(24) In the end zone 15, a transmitting optic element 8 is arranged around the at least one position light-emitting element 6, wherein the light distribution of the at least one position light-emitting element 6 can be influenced by the transmitting optic element 8. This way, the light distribution can be expanded in such way that more light is scattered onto the reflector 11.

(25) The transmitting optic element 8 is in the form of a diffuser and/or has a vertical ribbing and/or cylindrical lenses that are lined up.

(26) In the end zone 15, there is further a reflecting optic element 7 arranged around the at least one position light-emitting element 6 so that the light distribution of the at least one position light-emitting element 6 can be influenced by the reflecting optic element 7 and so that the at least one position light-emitting element 6 is shielded from the at least one low-light-emitting element 4 and the at least one high-light-emitting element 5.

(27) The reflecting optic element 7 has a, preferably concave, outline and, in respect of the longitudinal direction L, is arranged behind the at least one position light-emitting element 6. This way the light efficiency can be increased in the forward direction.

(28) Furthermore, the reflecting optic element 7 is made of a heat-conducting material, in particular, the reflecting optic element 7 is a part of the heat-conducting member 30, which is described further below. This way, heat can be dissipated.

(29) The lighting device 12 has a heat sink 1, wherein the light-emitting element carrier 14 is arranged at the heat sink 1 in such way that, in respect of the longitudinal direction L, the front facing end zone 15 of the light-emitting element carrier 14 is facing away from the heat sink 1.

(30) A heat-conducting member 30 is arranged at the light-emitting element carrier 14, wherein the heat-conducting member 30 is connected with the heat sink 1 in such way that heat can be conducted from the light-emitting element carrier 14 to the heat sink 1. The heat can be emitted to the environment from the heat sink 1.

(31) The heat-conducting member 30 is connected with the heat sink 1 in one piece. In particular, the heat-conducting member 30 and the heat sink 1 are in the form of two consistent aluminum components.

(32) The at least one low-light-emitting element 4 and the at least one high-light-emitting element 5 and/or the at least one position light-emitting element 6 is/are each arranged in a recess 22, 23 of the heat-conducting member 30 and is/are covered and/or enclosed by the heat-conducting member 30.

(33) The heat-conducting member 30 has a narrowing in the area of the at least one low-light-emitting element 4 and the at least one high-light-emitting element 5 so that the surface of the light-emitting elements 4, 5 run essentially even with the surface of the heat-conducting member 30.

(34) The heat-conducting member 30, in the end zone 15, has a, preferably concave, outline which serves as reflecting optic element 7 for the at least one position light-emitting element 6.

(35) The lighting device 12 has a circuit board 3, wherein the at least one low-light-emitting element 4 and/or the at least one high-light-emitting element 5 and/or the at least one position light-emitting element 6 are arranged on the circuit board 3.

(36) The circuit board 3 projects from the heat sink 1 in the light-emitting element carrier 14, in particular, the circuit board 3 extends through the entire light-emitting element 14 in the longitudinal direction L.

(37) FIG. 2 shows that the circuit board 3 extends beyond the heat-conducting member 30 and its end which is formed as reflecting optic element 7. In this area, the position light-emitting elements 6a, 6b are arranged on opposite sides.

(38) At the circuit board 3, there is arranged a control device 2. In addition, the control device 2 is arranged in a recess 17 of the heat sink 1. This way, all electronic elements are arranged on one circuit board 3, by which a wiring is no longer necessary.

(39) A first heat-conducting component 19 comprises a top part of the heat sink 1 and a top part of the heat-conducting member 30 and a second heat-conducting component 20 comprises a bottom part of the heat sink 1 and a bottom part of the heat-conducting member 30. The circuit board 3 is arranged between the first heat-conducting component 19 and the second heat-conducting component 20. The first heat-conducting component 19 and the second heat-conducting component 20 are attached to each other by means of at least one fixing means 21, in particular a screw. The at least one low-light-emitting element 4 is arranged in a first recess 22 of the first heat-conducting component 19. The at least one high-light-emitting element 5 is arranged in a second recess 23 of the second heat-conducting component 20.

(40) A method for manufacturing a lighting device 12 as shown in the FIGS. 1a, 1b and 2 can have the following method steps: the first heat-conducting component 19 is arranged at a first side of the circuit board 3, the second heat-conducting component 20 is arranged at a second side opposite of the first side of the circuit board 3, the first heat-conducting component 19 is attached to the second heat-conducting component 20, preferably by means of a fixing means 21, wherein the circuit board 3 is held between the two heat-conducting components 19, 20.

(41) The reflector 11 has a passage 24, wherein the light-emitting element carrier 14 projects though the passage 24 in the state of being mounted, and/or the light-emitting element carrier 14 is arranged in an interior 25 generated by the reflector 11 and the heat sink 1 is arranged outside of an interior 25 generated by the reflector 11.

(42) A method for manufacturing a headlight 13 as shown in the FIGS. 1a, 1b and 2 can provide that the light-emitting element carrier 14 is led through a passage 24 in the reflector 11 and is attached at the reflector 11 at a fixing interface 27. The fixing interface 27 can also be suitable for further lamps, especially halogen lamps. This way, the lighting device 12 can also be used in already used headlights 13.

(43) The FIGS. 3a, 3b, 4a and 4b show different views of a lighting device 12, which essentially is executed the same way as in the FIGS. 1a, 1b and 2.

(44) Beyond the versions of the FIGS. 1a, 1b and 2, the FIGS. 3a, 3b, 4a and 4b show the following aspects well:

(45) The heat sink 1 has cooling ribs 18 so that heat can be dissipated faster to the environment.

(46) Also, FIGS. 3a and 4a show fixing means 21 for attaching the first heat-conducting component 19 to the second heat-conducting component 20 in the area of the heat sink 1.

(47) FIG. 4a shows that four low-light-emitting elements 4 arranged next to each other are provided. The desired luminous flux can be chosen by the number of light-emitting elements.

(48) The heat sink 1 is of a round shape and has fixing elements 26 on the edges as counterparts to the fixing interface 27 at the headlight 13.

LIST OF REFERENCES

(49) 1 heat sink 2 control device 3 circuit board 4 low-light-emitting element 5 high-light-emitting element 6 position light-emitting element 6a top position light-emitting element 6b bottom position light-emitting element 7 reflecting optic element 8 transmitting optic element 9 light beam 10 light beam 11 reflector 12 lighting device 13 headlight 14 light-emitting element carrier 15 end zone of the light-emitting element carrier 16 narrowing 3 17 recess in the heat sink 18 cooling ribs 19 first component of the heat sink 20 second component of the heat sink 21 fixing means 22 first recess 23 second recess 24 passage of the reflector 25 interior of the reflector 26 fixing elements 27 fixing interface 28 first half of the reflector 29 second half of the reflector 30 heat-conducting member