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, in particular for a one-track vehicle, comprising a light-emitting element carrier having a longitudinal direction, wherein 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, wherein 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 that 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.

2. The lighting device according to claim 1, wherein, in the end zone, a transmitting optic element is arranged around the at least one position light-emitting element, wherein the light distribution of the at least one position light-emitting element can be influenced by the transmitting optic element, preferably, wherein the transmitting optic element is in the form of a diffuser and/or has a vertical ribbing an/or cylindrical lenses that are lined up.

3. The lighting device according to claim 1, wherein, in the end zone, a reflecting optic element is arranged at the at least one position light-emitting element in such way that the light distribution of the at least one position light-emitting element can be influenced by the reflecting optic element and/or in such way that the at least one position light-emitting element is shielded from the at least one low-light-emitting element and the at least one high-light-emitting element, preferably wherein the reflecting optic element has a, preferably concave, outline, and/or in respect of the longitudinal direction, is arranged behind the at least one position light-emitting element, and/or the reflecting optic element is made of a heat-conducting material.

4. The lighting device according to claim 1 wherein at least two position light-emitting elements are provided, which are arranged on opposite sides of the light-emitting element carrier, and/or the at least one low-light-emitting element and the at least one high-light-emitting element are arranged on two opposite sides of the light-emitting element carrier and/or are arranged in the longitudinal direction offset to one another.

5. The lighting device according to claim 1, wherein the lighting device has a heat sink, wherein the light-emitting element carrier is arranged at the heat sink so that, in respect of the longitudinal direction, the front facing end zone of the light-emitting element carrier is facing away from the heat sink, preferably wherein the heat sink has cooling ribs and/or wherein a control device is arranged in the heat sink.

6. The lighting device according to claim 1, wherein a heat-conducting member is arranged at the light-emitting element carrier, wherein the heat-conducting member is connected with the heat sink in such way that heat can be conducted from the light-emitting element carrier into the heat sink, preferably wherein the heat-conducting member is connected with the heat sink in one piece, and/or the at least one low-light-emitting element and/or the at least one high-light-emitting element and/or the at least one position light-emitting element is/are arranged in a recess of the heat-conducting member, and particularly preferably, is/are covered and/or enclosed by the heat-conducting member, and/or the heat-conducting member has a narrowing in the area of the at least one low-light-emitting element and/or the at least one high-light-emitting element in such way that the surface of the light-emitting elements essentially run even with the surface of the heat-conducting member, and/or the heat-conducting member, in the end zone, has a, preferably concave, outline that serves as reflecting optic element for the at least one position light-emitting element.

7. The lighting device according to claim 1, wherein the lighting device has a circuit board, wherein the at least one low-light-emitting element and/or the at least one high-light-emitting element and/or the at least one position light-emitting element are arranged on the circuit board, preferably wherein the circuit board projects from the heat sink into the light-emitting element carrier, particularly preferably, wherein the circuit board extends through the entire light-emitting element carrier in the longitudinal direction, and/or a control device is arranged at the circuit board.

8. The lighting device according to claim 5, 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 member comprises a bottom part of the heat sink and a bottom part of the heat-conducting member, preferably wherein the circuit board is arranged between the first heat-conducting component and the second heat-conducting component, and/or the first heat-conducting component and the second heat-conducting component can be attached to each other by means of at least one fixing means, particularly preferably, a screw, and/or the at least one low-light-emitting element is arranged in a first recess of the first heat-conducting component and the at least one high-light-emitting element is arranged in a second recess of the second heat-conducting component.

9. The lighting device according to claim 1, wherein the at least one low-light-emitting element, the at least one high-light-emitting element and/or the at least one position light-emitting element are in the form of semi-conductor light sources, in particular light-emitting diodes or laser diodes, and/or radiate white light during operation.

10. A headlight comprising the lighting device according to claim 1, wherein the headlight has at least one, preferably concave, reflector, wherein light of the at least one low-light-emitting element and/or of the at least one high-light-emitting element and/or of the at least one position light-emitting element is reflected at the reflector during operation.

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

12. The headlight according to claim 10, wherein the at least one low-light-emitting element is arranged at a first, in particular at a top, side of the light-emitting element carrier is such way that its light can be reflected exclusively from a first, in particular from a top, half of the reflector, and/or the at least one high-light-emitting element is arranged at a second, in particular at a bottom, side of the light-emitting element carrier in such way that its light can be reflected exclusively from a second, in particular from a bottom, half of the reflector, and/or the at least one position light-emitting element is arranged at a first, in particular a top, side, and a second, in particular, a bottom, side of the light-emitting element carrier in such way that its light can be reflected from a first, in particular from a top, half of the reflector and/or from a second, in particular from a bottom, half of the reflector.

13. A one-track vehicle, in particular a motorcycle, comprising the headlight according to claim 10, wherein the headlight is preferably used as front headlight.

14. A method for manufacturing the lighting device according to claim 8, having the following method steps: the first heat-conducting component is arranged at a first side of the circuit board, the second heat-conducting component is arranged at a second side opposite of the first side of the circuit board, the first heat-conducting component is attached to the second heat-conducting component, preferably by means of a fixing means, wherein the circuit board is held between the two heat-conducting components.

15. A method for manufacturing the headlight according to claim 10, wherein the light-emitting element carrier is led through a passage in the reflector and is attached at a fixing interface at the reflector, preferably wherein the fixing interface is suitable for further lamps, especially halogen lamps.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Further preferred embodiments and details are shown in the Figures:

[0062] FIG. 1a shows a headlight with a lighting device in a lateral sectional view

[0063] FIG. 1b shows a headlight with a lighting device is a sectional view from the top

[0064] FIG. 2 shows light-emitting element carriers in a sectional view from the side

[0065] FIG. 3a shows a lighting device in a perspective view

[0066] FIG. 3b shows a lighting device in a front view

[0067] FIG. 4a shows a lighting device in a plan view

[0068] FIG. 4b shows a lighting device in a lateral view

DETAILED DESCRIPTION OF THE INVENTION

[0069] The FIGS. 1a and 1b show sectional views of a headlight 13 with a lighting device 12.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] A method for manufacturing a lighting device 12 as shown in the FIGS. 1a, 1b and 2 can have the following method steps: [0101] the first heat-conducting component 19 is arranged at a first side of the circuit board 3, [0102] the second heat-conducting component 20 is arranged at a second side opposite of the first side of the circuit board 3, [0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] Beyond the versions of the FIGS. 1a, 1b and 2, the FIGS. 3a, 3b, 4a and 4b show the following aspects well:

[0108] The heat sink 1 has cooling ribs 18 so that heat can be dissipated faster to the environment.

[0109] 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.

[0110] 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.

[0111] 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

[0112] 1 heat sink [0113] 2 control device [0114] 3 circuit board [0115] 4 low-light-emitting element [0116] 5 high-light-emitting element [0117] 6 position light-emitting element [0118] 6a top position light-emitting element [0119] 6b bottom position light-emitting element [0120] 7 reflecting optic element [0121] 8 transmitting optic element [0122] 9 light beam [0123] 10 light beam [0124] 11 reflector [0125] 12 lighting device [0126] 13 headlight [0127] 14 light-emitting element carrier [0128] 15 end zone of the light-emitting element carrier [0129] 16 narrowing 3 [0130] 17 recess in the heat sink [0131] 18 cooling ribs [0132] 19 first component of the heat sink [0133] 20 second component of the heat sink [0134] 21 fixing means [0135] 22 first recess [0136] 23 second recess [0137] 4 passage of the reflector [0138] 25 interior of the reflector [0139] 26 fixing elements [0140] 27 fixing interface [0141] 28 first half of the reflector [0142] 29 second half of the reflector [0143] 30 heat-conducting member