Lighting device of automotive head lamp

Abstract

To provide an improved lighting device of an automotive head lamp.SOLUTION: A lighting device (10) of an automotive head lamp is configured to form an optical distribution having a cut-off line. A shutter device (100) is configured to switch between: an aligned position of a first and second shutter edges (110b, 120b) at which a common shutter edge (150) contributes to a generation of a linear cut-off line; and a non-aligned position at which the first and second shutter edges (110b, 120b) are inclined to each other so as to contribute to a generation of a cut-off line at which the common shutter edge (150) is shifted from the liner cut-off line. A switching between the aligned position and the non-aligned position is executed by a rotation of a first and / or second shutter bodies (110, 120) about a common rotational axis by a rotation device.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0001] This application claims the benefit of priority under the Paris Convention for European Patent Application No. 23212201.0 filed on November 27, 2023, the entire content of which is incorporated herein by reference and is set forth herein.

[0002] The present invention relates to a lighting device for a motor vehicle headlamp, in particular for a single-track motor vehicle headlamp, and more particularly for a motorcycle headlamp, wherein the lighting device is configured to form a light distribution having a cut-off line, the lighting device · at least one light source configured to emit light in a main direction for forming the light distribution, · a shutter device arranged downstream of the at least one light source along the main direction, provided that the shutter device is configured to generate the cut-off line of the light distribution, · a projection lens for projecting the generated light distribution of the at least one light source in front of the lighting device in cooperation with the shutter device, provided that the projection lens includes an optical axis, · a holder configured to hold the shutter device and the projection lens, provided that preferably the at least one light source is attached to the holder, and relates to a lighting device comprising the same.

[0003] The present invention further relates to a stabilized lighting device for emitting a stabilized light distribution.

[0004] The present invention further relates to a motorcycle headlamp.

Background Art

[0005] In the case of a single-track motor vehicle such as a motorcycle, problems arise when driving around a curve due to the inclination of the vehicle. Generally, a headlight fixedly coupled to the (front) fork of a motorcycle or a motorcycle can no longer illuminate the road in front of the motorcycle in an appropriate manner.

[0006] It should be noted that the present invention is basically suitable for any vehicle that experiences inclination during cornering.

[0007] The light distribution, especially the setting of the low beam light distribution, is regulated by law and is measured for an upright vehicle. Each time (the vehicle) turns a corner, the vehicle tilts together with the headlight or lighting device around the longitudinal axis of the vehicle.

[0008] As a result, on the one hand, the visibility in the curve decreases, and on the other hand, oncoming vehicles are dazzled. Thereby, the safety of traffic is significantly impaired.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Summary of the Invention

Problems to be Solved by the Invention

[0010] In order to solve this problem, there are various approaches in the prior art; for example, it has been said that the entire headlight can be configured to be positioned in a correspondingly movable manner on a motorcycle so that the headlight can simply be rotated when the motorcycle is tilted.

[0011] This is disadvantageous because positioning the entire headlight of a motorcycle is costly and because the entire headlight has to be rotated when driving around a curve. As a result, a relatively large mass has to be moved, the movement is slowed down, and furthermore, a larger structural space is required.

[0012] One object of the present invention is to provide an improved lighting device for a motor vehicle headlight.

Means for Solving the Problem

[0013] According to a first aspect of the present invention, there is provided a lighting device for a motor vehicle headlight, in particular for a single-track motor vehicle headlight, and especially for a motorcycle headlight. The lighting device is configured to form a light distribution having a cut-off line, The lighting device · at least one light source configured to emit light in a main direction for forming the light distribution, · a shutter device arranged downstream of the at least one light source along the main direction, provided that the shutter device is configured to generate the cut-off line of the light distribution, · a projection lens for projecting the light distribution generated by the at least one light source in front of the lighting device in cooperation with the shutter device, provided that the projection lens includes an optical axis, · a holder configured to hold the shutter device and the projection lens, provided that preferably the at least one light source is attached to the holder, is included. The shutter device · A first shutter body having a first shutter surface including a first shutter edge, and · A second shutter body having a second shutter surface including a second shutter edge which is composed of The first shutter body and the second shutter body are arranged relative to each other such that the first shutter edge and the second shutter edge together form a common shutter edge that generates the cut-off line of the light distribution. The shutter device · The alignment positions of the first shutter edge and the second shutter edge, provided that the common shutter edge contributes to the generation of a straight cut-off line. and · The misalignment positions of the first shutter edge and the second shutter edge, provided that the first shutter edge and the second shutter edge are tilted relative to each other such that the common shutter edge contributes to the generation of a cut-off line that is deviated from the straight cut-off line. is configured to transition between The transition between the alignment position and the misalignment position is performed by rotation of the first shutter body and / or the second shutter body around a common rotation axis by a rotation device. According to a second aspect of the present invention, a stabilized lighting device for emitting a stabilized light distribution is provided. The stabilized lighting device includes at least one lighting device according to the present invention, particularly described in at least one of Forms 10 to 15 below, an external control unit, and at least one roll angle sensor configured to determine a roll angle from a predetermined standard position of the lighting device around the main direction. The external control unit is configured to frequently (periodically), preferably constantly, receive the roll angle from the at least one roll angle sensor, and to control the transmission element depending on the roll angle in order to maintain a stabilized light distribution. According to a third aspect of the present invention, a motorcycle headlight is provided. The motorcycle headlight includes at least one lighting device according to at least one of the following Forms 1 to 13, in particular according to the present invention, and / or at least one stabilization lighting device according to the present invention, in particular according to the following Form 14.

Embodiments for Carrying Out the Invention

[0014] (Form 1) Refer to the first perspective of the present invention above. (Form 2) In the lighting device according to Form 1, it is preferable that the first shutter body and the second shutter body are rotatable independently and relatively to each other around the common rotation axis. (Form 3) In the lighting device according to Form 1 or 2, in particular according to Form 1, it is preferable that the first shutter body includes a first partial circular sliding surface complementary to the first opposing circular sliding surface of the holder, and the first shutter body is fitted into the holder so that the first partial circular sliding surface and the first opposing circular sliding surface can slide relative to each other. (Form 4) In the lighting device according to any one of Forms 1 to 3, in particular according to Form 1, it is preferable that the second shutter body includes a second partial circular sliding surface complementary to the second opposing circular sliding surface of the holder, and the second shutter body is fitted into the holder so that the second partial circular sliding surface and the second opposing circular sliding surface can slide relative to each other. (Form 5) In the lighting device according to Form 4, it is preferable that each shutter body includes a tooth row that is partially arranged on the first partial circular sliding surface of the first shutter body and partially arranged on the second partial circular sliding surface of the second shutter body. (Form 6) In the lighting device according to any one of Forms 1 to 5, in particular according to Form 1, ​​​​The rotating device includes a transmission element, and the transmission element is formed as a gear configured to mesh with the tooth rows of the first shutter body and / or the second shutter body in order to convert the angular motion of the transmission element into the rotational motion of the first shutter body and / or the second shutter body around the common rotation axis. Preferably, the main direction is parallel to the optical axis and preferably also parallel to the common rotation axis. is preferred. (Embodiment 7) In any one of Embodiments 1 to 6, particularly in the lighting device according to Embodiment 1, the first shutter body and the second shutter body can be mechanically coupled via at least one coupling device. The coupling device includes a first fitting element and a second fitting element. The first fitting element and the second fitting element can be coupled to each other such that when coupled, the coupling device restricts the relative rotation of the first shutter body and the second shutter body around the common rotation axis. is preferred. (Embodiment 8) In the lighting device according to Embodiment 7, the first fitting element is provided on the first shutter body or the second shutter body, and the second fitting element is provided on the second shutter body or the first shutter body. is preferred. (Embodiment 9) In Embodiment 7 or 8, particularly in the lighting device according to Embodiment 7, the first fitting element is formed as a groove and the second fitting element is formed as a protrusion. The groove has two opposing end portions. When the protrusion abuts against each end portion of the groove, the relative movement of the first shutter body and the second shutter body with respect to each other is restricted. is preferred. (Embodiment 10) In any one of Embodiments 7 to 9, particularly in the lighting device according to Embodiment 7, The transmission element is rotatable in a plurality of different angular ranges starting from a zero position where the common shutter edge of the shutter device is linear and horizontal when the lighting device is correctly installed in the vehicle. · In the first angular range, the transmission element meshes with the first shutter body and the second shutter body such that both shutter bodies are moved together and in an aligned position around the common axis of rotation. · In a second angular range starting from the end of the first angular range, the transmission element meshes with the first shutter body and the second shutter body such that only the first shutter body is moved by the transmission element to bring the first shutter body and the second shutter body into a misaligned position, provided that the second angular range ends when the coupling device limits the relative rotation of the first shutter body with respect to the second shutter body. · In a third angular range AR3 starting from the end of the second angular range, the transmission element meshes with the first shutter body and the second shutter body such that only the first shutter body is moved by the transmission element, provided that the second shutter body is rotated by the coupling device by the same amount around the common axis of rotation. is preferred. (Embodiment 11) In the lighting device according to Embodiment 8, the first angular range is from 0° to 6°, the second angular range is from 6° to 12°, and the third angular range starts from 12° is preferred. (Embodiment 12) In any one of Embodiments 1 to 11, and particularly in the lighting device according to Embodiment 1, the first shutter surface and the second shutter surface are inclined by 3° to 5°, preferably 4°, from the optical axis. is preferred. (Embodiment 13) In any one of Embodiments 1 to 12, and particularly in the lighting device according to Embodiment 1, the lighting device includes a plurality of light sources, preferably a plurality of LEDs. Preferably, for each light source, at least one collimator element configured to collimate light is assigned to the light source. This is preferred. (Form 14) Refer to the second perspective of the present invention above. (Form 15) Refer to the third perspective of the present invention above.

[0015] To achieve the above object, the shutter device · A first shutter body having a first shutter surface including a first shutter edge, and · A second shutter body having a second shutter surface including a second shutter edge are composed of, The first shutter body and the second shutter body are arranged relative to each other such that the first shutter edge and the second shutter edge together form a common shutter edge that generates a cut-off line of the light distribution. The shutter device · The alignment positions of the first shutter edge and the second shutter edge, provided that the common shutter edge contributes to the generation of a straight cut-off line, and · The misalignment positions of the first shutter edge and the second shutter edge, provided that the first shutter edge and the second shutter edge are tilted relative to each other such that the common shutter edge contributes to the generation of a cut-off line deviated from the straight cut-off line, is configured to transition between, The transition between the alignment position and the misalignment position is executed by rotation of the first shutter body and / or the second shutter body around a common rotation axis by a rotating device.

[0016] Advantageously, the first shutter body and the second shutter body are rotatable independently and relative to each other around a common rotation axis.

[0017] Advantageously, the first shutter body includes a first partial circular sliding surface complementary to the first opposing circular sliding surface of the holder, and the first shutter body is fitted into the holder such that the first partial circular sliding surface and the first opposing circular sliding surface can slide relative to each other.

[0018] Advantageously, the second shutter body includes a second partial circular sliding surface complementary to the second opposing circular sliding surface of the holder, and the second shutter body is fitted into the holder such that the second partial circular sliding surface and the second opposing circular sliding surface can slide relative to each other.

[0019] Advantageously, the rotating device includes a transmission element, and the transmission element is formed as a gear configured to mesh with the tooth rows of the first and / or second shutter bodies in order to convert the angular movement of the transmission element into the rotational movement of the first and / or second shutter bodies around a common axis of rotation.

[0020] Advantageously, each shutter body includes a tooth row that is partially arranged on the first partial circular sliding surface of the first shutter body and partially arranged on the second partial circular sliding surface of the second shutter body.

[0021] Advantageously, the first shutter body and the second shutter body can be mechanically coupled via at least one coupling device, the coupling device including a first fitting element and a second fitting element, and the first fitting element and the second fitting element can be coupled to each other such that when coupled, the coupling device restricts the relative rotation of the first shutter body and the second shutter body around a common axis of rotation.

[0022] Advantageously, the first fitting element is provided on the first shutter body or the second shutter body, and the second fitting element is provided on the second shutter body or the first shutter body.

[0023] Advantageously, the first fitting element is formed as a groove and the second fitting element is formed as a protrusion, the groove having two opposing end portions, and the relative movement of the first shutter body and the second shutter body with respect to each other is restricted when the protrusion abuts against each end portion of the groove.

[0024] Advantageously, the transmission element is rotatable in a plurality of different angular ranges starting from a zero position in which the common shutter edge of the shutter device is straight and horizontal as seen in the state where the lighting device is correctly installed on the vehicle, · In a first angular range, the transmission element meshes with the first shutter body and the second shutter body such that both shutter bodies are moved together and in an aligned position about a common axis of rotation, · In a second angular range starting from the end of the first angular range, the transmission element meshes with the first shutter body and the second shutter body such that only the first shutter body is moved by the transmission element to bring about a misaligned position of the first shutter body and the second shutter body, and the second angular range ends when the coupling device restricts the relative rotation of the first shutter body and the second shutter body with respect to each other, · In a third angular range starting from the end of the second angular range, the transmission element meshes with the first shutter body and the second shutter body such that only the first shutter body is moved by the transmission element, and the second shutter body is rotated by the coupling device by the same amount about a common axis of rotation.

[0025] Advantageously, the first angular range is from 0° to 6°, the second angular range is from 6° to 12°, and the third angular range starts from 12°.

[0026] Advantageously, the first shutter surface and the second shutter surface are inclined from the optical axis by 3° to 5°, preferably 4° (so as to be away).

[0027] Advantageously, at least one light source is attached to the holder.

[0028] Advantageously, the lighting device includes a plurality of light sources, preferably a plurality of LEDs, and preferably, for each light source, at least one collimator element configured to collimate light is assigned to the light source.

[0029] Advantageously, the main direction is parallel to the optical axis and preferably also parallel to the common axis of rotation.

[0030] Advantageously, the shutter device includes a reset element configured to bring the first shutter body and the second shutter body from the maximum inclination (tilt) in the misaligned position to the aligned position.

[0031] Advantageously, the reset element is formed as a spring.

[0032] Advantageously, the spring includes a first arm and a second arm.

[0033] Advantageously, the first shutter body includes a first reset holder configured to hold the first arm of the spring, the second shutter body includes a second reset holder configured to hold the second arm of the spring, and the spring is not spring-loaded (biased) when the shutter device is in the zero position.

[0034] Advantageously, the first and / or second shutter body includes at least one weight element configured to support the respective shutter body to the zero position.

[0035] The above object is also achieved by a stabilized lighting device for emitting a stabilized light distribution, including at least one lighting device according to the present invention, an external control unit, and at least one roll angle sensor configured to determine a roll angle of the lighting device from a predetermined standard position around the main direction, wherein the external control unit is configured to frequently (periodically), preferably constantly, receive the roll angle from the at least one roll angle sensor, and to control a transmission element depending on the roll angle in order to maintain the stabilized light distribution.

[0036] The above object is also achieved by a motorcycle headlight including at least one lighting device according to the present invention and / or at least one stabilized lighting device according to the present invention.

[0037] In order to further illustrate the present invention, exemplary and non-limiting embodiments shown in the drawings are described below.

Brief Description of the Drawings

[0038]

Figure 1A

Figure 1B

Figure 2A

Figure 2B

Figure 3

Figure 4A

Figure 4B

Figure 5A

Figure 5B

Figure 5C

Figure 5D

Figure 6A

Figure 6B

Example

[0039] FIG. 1A shows an example of an illumination device 10 for an automotive headlamp, particularly for a single-track automotive headlamp, and especially for a motorcycle headlamp. The illumination device 10 is configured to form a light distribution having a cut-off line.

[0040] The illumination device 10 includes a light source 20 configured to emit light in the main direction X to form a light distribution. The light source is preferably an LED (s), and preferably for each light source 20, at least one collimator element configured to collimate the light is assigned to the light source. Further, the illumination device 10 includes a shutter device 100 disposed downstream of the light source 20 along the main direction X. The shutter device 100 is configured to generate a cut-off line in the light distribution.

[0041] Further, the illumination device 10 includes a projection lens 200 in front of (downstream of) the illumination device 10 for projecting (casting) the light distribution generated by the light source 20 in cooperation with the shutter device 100. The projection lens 200 includes an optical axis A.

[0042] Furthermore, the lighting device 10 includes a holder 300 configured to hold the shutter device 100 and the projection lens 200, that is, the light source 20 is attached to the holder 300. The shutter device 100 is composed of a first shutter body 110 having a first shutter surface 110a including a first shutter edge 110b and a second shutter body 120 having a second shutter surface 120a including a second shutter edge 120b. Furthermore, the first shutter surface 110a and the second shutter surface 120a are inclined so as to be separated from the optical axis A by 3° to 5°, preferably 4°.

[0043] The first shutter body 110 and the second shutter body 120 are arranged relative to each other such that the first shutter edge 110b and the second shutter edge 120b construct a common shutter edge 150 that generates a cut-off line of the light distribution together.

[0044] The shutter device 100 is configured to transition between an aligned position of the first shutter edge 110b and the second shutter edge 120b (in this case, the common shutter edge 150 contributes to the generation of a straight cut-off line) and a misaligned position of the first shutter edge 110b and the second shutter edge 120b (in this case, the first shutter edge 110b and the second shutter edge 120b are tilted relative to each other such that the common shutter edge 150 contributes to the generation of a cut-off line that is deviated from the straight cut-off line).

[0045] The transition between these positions is executed by the rotation of the first shutter body 110 and / or the second shutter body 120 around a common rotation axis R using a rotation device 400. In this case, the first shutter body 110 and the second shutter body 120 are rotatable independently and relative to each other around the common rotation axis R. The main direction X is parallel to the optical axis A and preferably also parallel to the common rotation axis R.

[0046] The first shutter body 110 includes a first partial circular sliding surface 111 complementary to the first opposing circular sliding surface 310 of the holder 300, and the first shutter body 110 is fitted into the holder 300 such that the first partial circular sliding surface 111 and the first opposing circular sliding surface 310 can slide relative to each other. The second shutter body 120 includes a second partial circular sliding surface 121 complementary to the second opposing circular sliding surface 320 of the holder 300, and the second shutter body 120 is fitted into the holder 300 such that the second partial circular sliding surface 121 and the second opposing circular sliding surface 320 can slide relative to each other. These states can be seen in FIGS. 1A and 1B.

[0047] Furthermore, the shutter device 100 includes a reset element 600 configured to bring the first shutter body 110 and the second shutter body 120 from the maximum inclination in the misaligned position to the aligned position. The reset element 600 is formed as a spring and is disposed between the first shutter body 110 and the second shutter body 120. Furthermore, the reset element 600 includes a first arm and a second arm, the first shutter body 110 includes a first reset holder 610 configured to hold the first arm of the spring, and the second shutter body 120 includes a second reset holder 620 configured to hold the second arm of the spring. These states can be seen in FIGS. 2A and 2B.

[0048] As can be seen from FIGS. 1A and 1B, the rotating device 400 includes a transmission element 410, which is configured as a gear that meshes with the tooth rows 130 of the first shutter body 110 and / or the second shutter body 120 in order to convert the angular motion of the transmission element 410 into the rotational motion of the first shutter body 110 and / or the second shutter body 120 around the common rotation axis R. In FIGS. 3(A) and 3(B), the tooth rows 130 arranged on each of the shutter bodies 110, 120 can be seen. Also, as can be seen from FIG. 3(B), in the state where the lighting device is correctly installed on the vehicle, when viewed, the common shutter edge 150 of the shutter device 100 is in the zero position where it is straight and horizontal. In this case, the tooth rows 130 (of the shutter bodies 110, 120) overlap each other to some extent (in the axial direction). At this zero position, the transmission element 410 meshes with the tooth rows 130 of both shutter bodies 110, 120, while when the shutter device 100 is in the zero position, the reset element 600 is not spring-loaded (biased).

[0049] Furthermore, the first shutter body 110 and the second shutter body 120 can be mechanically coupled via at least one coupling device 500. The coupling device 500 includes a first fitting element 510 and a second fitting element 520. The first fitting element 510 and the second fitting element 520 can be coupled to each other such that when coupled, the coupling device 500 restricts the relative rotation of the first shutter body 110 and the second shutter body 120 around the common rotation axis R. The first fitting element 510 is provided on the second shutter body 120, and the second fitting element 520 is provided on the first shutter body 110.

[0050] The first fitting element 510 is formed as a groove and the second fitting element 520 is formed as a protrusion (projection). The groove has two end portions located opposite to each other (on the opposite sides). When the protrusion abuts against each end portion of the groove, the relative movement of the first shutter body 110 and the second shutter body 120 with respect to each other is restricted. This can be best seen in FIGS. 1B and 5A to 5D.

[0051] Furthermore, the transmission element 410 is rotatable in different angular ranges AR1, AR2, AR3 starting from a zero position where the common shutter edge 150 of the shutter device 100 is straight and horizontal as viewed in a state where the lighting device is correctly installed in the vehicle. In the first angular range AR1, the transmission element 410 meshes with the first shutter body 110 and the second shutter body 120 such that both shutter bodies 110, 120 are moved together and in alignment about the common axis of rotation R.

[0052] In the second angular range AR2 - which starts from the end of the first angular range AR1 - the transmission element 410 meshes with the shutter bodies 110, 120 such that only the second shutter body 120 is moved by the transmission element 410 to bring about a misaligned position of the first shutter body 110 and the second shutter body 120. The second angular range AR2 ends when the coupling device 500 restricts the relative rotation of the first shutter body 110 and the second shutter body 120 with respect to each other.

[0053] In the third angular range AR3 - which starts from the end of the second angular range AR2 - the transmission element 410 meshes with the shutter bodies 110, 120 such that only the second shutter body 110 is moved by the transmission element 410, and the first shutter body 120 is rotated by the coupling device 500 by the same amount about the common axis of rotation R.

[0054] The first angular range AR1 is from 0° to 6°, the second angular range AR2 is from 6° to 12°, and the third angular range AR3 starts from 12°.

[0055] Figure 4A shows a front view of the lighting device 10 without (with removed) the projection lens 200. The shutter device 100 is in the zero position, and the above-described angular ranges AR1, AR2, AR3 are shown. In Figure 4B, the shutter device 100 is shown in an inclined state within the first angular range AR1, or specifically, at the end of the first angular range AR1, and the shutter device 100 is still in the aligned position. To obtain this position, the transmission element 410 is rotated counterclockwise as can be seen in this front view.

[0056] Figure 5A shows a rear view, a front view, and a central view from which the spring 600 can be seen (from below the plane of the paper), with the shutter device 100 in the zero position. Figure 5B shows the same view, but with the shutter device 100 tilted in the first angular range AR1 via the transmission element 410 as already explained in FIGS. 4A and 4B, and the spring 600 not being spring-loaded (biased). This position is achieved by rotating the transmission element 410 counterclockwise (as seen in the front view). In the zero position, the transmission element 410 meshes with the tooth rows 130 of both shutter bodies 110, 120 (shown in FIGS. 3(A) and 3(B)) because both tooth rows 130 overlap (axially) as can be seen from FIG. 3(B), and thus both shutter bodies 110, 120 can be tilted in the same manner. Also, in the first angular range AR1, the spring 600 is not spring-loaded (biased).

[0057] In FIG. 5C, the transmission element 410 is further rotated counterclockwise (as seen in the front view) to rotate only the second shutter body 120. This is because the transmission element 410 engages only with the tooth row 130 of the second shutter body 120 at the end of the first angular range AR1 (or the beginning of the second angular range AR2). In this way, a misaligned position is achieved and the spring 600 is spring-loaded (biased). The second angular range AR2 ends (terminates) when the coupling device 500 restricts the relative rotation of the first shutter body 110 and the second shutter body 120 with respect to each other, as can be seen from FIG. 5C.

[0058] In FIG. 5D, the transmission element 410 is further rotated counterclockwise (as seen in the front view), and the transmission element 410 meshes with the shutter bodies 110, 120 such that only the second shutter body 110 is moved by the transmission element 410. The first shutter body 120 is rotated by the coupling device 500 to the same extent around the common rotation axis R - and the spring 600 is still spring-loaded (biased).

[0059] In the opposite movement (operation), the spring 600 assists in returning the shutter bodies 110 and 120 to their aligned positions.

[0060] Note that in the illustrated description, only one tilting (inclination) direction (such as that of a motorcycle, etc.) is shown, but it should be noted that the above description also applies to the opposite tilting (inclination) direction.

[0061] Furthermore, FIGS. 6A and 6B show an example of a motor vehicle on a road, which includes the above lighting device, an external control unit, and at least one roll angle sensor configured to determine (obtain) the roll angle α of the lighting device or the motor vehicle from a predetermined standard position around the main direction X, and includes a stabilized lighting device for emitting a stabilized (stable) light distribution 30. The external control unit is configured to frequently (periodically), preferably constantly, receive the roll angle α from at least one roll angle sensor, and to control the transmission element 410 according to the roll angle in order to maintain the stabilized light distribution or to adjust the light distribution according to the roll angle α.

[0062] In FIG. 6A, the motor vehicle - and thus also the lighting device 10 - is in the standard position, and projects a light distribution 30 having a straight and horizontal cut-off line 40 onto the road. In this standard position of the motor vehicle, the shutter device 100 of the lighting device 10 is in the zero position.

[0063] In FIG. 6B, the motorcycle is tilted (inclined) at a roll angle α greater than zero, but the horizontal alignment (state) of the light distribution 30 is maintained, so that the cut-off line 40 is maintained as a straight horizontal line.

[0064] Within the framework of the entire disclosure of the present invention (including the claims and the drawings), further modifications and adjustments of the embodiments are possible based on its basic technical concept. Also, within the framework of the entire disclosure of the present invention, various combinations or selections (including "non-selections") of various disclosure elements (including each element of each claim, each element of each embodiment, each element of each drawing, etc.) are possible. That is to say, the present invention naturally includes the entire disclosure including the claims and the drawings, as well as various deformations and modifications that could be made by those skilled in the art in accordance with the technical concept of the present invention. In particular, regarding the numerical ranges described in this document, any numerical value or small range included within the said range should be construed as specifically described even in the absence of separate description.

[0065] Furthermore, the reference numerals appended to the claims are solely for the purpose of assisting in the understanding of the invention and are not intended to limit the present invention to the embodiments and illustrated examples.

[0066] Furthermore, the entire content of each of the above-mentioned documents is hereby incorporated herein by reference and shall be considered as described herein.

Explanation of Reference Numerals

[0067] 10 Lighting device 20 Light source 30 Light distribution 40 Cut-off line 100 Shutter device 110 First shutter body 110a First shutter surface 110b First shutter edge 111 First partial circular sliding surface 120 Second shutter body 120a Second shutter surface 120b Second shutter edge 121 Second partial circular sliding surface 150 Common shutter edge 200 Projection lens 300 Holder 310 First opposing circular sliding surface 320 Second opposing circular sliding surface 400 Rotating device 410 Transmission element 500 Coupling device 510 First fitting element 520 Second fitting element 600 Reset element (spring) 610 First reset holder 620 Second reset holder 700 Weight element AR1 First angular range AR2 Second angular range AR3 Third angular range α Roll angle X Main direction A Optical axis R Rotation axis

Claims

1. A lighting device for a motor vehicle headlamp, in particular for a single-track motor vehicle headlamp, in particular for a motorcycle headlamp, comprising: The lighting device (10) is configured to form a light distribution having a cutoff line, The lighting device (10) at least one light source (20) configured to emit light in a main direction (X) to form said light distribution; a shutter device (100) arranged downstream of the at least one light source (20) along the main direction (X), the shutter device (100) being configured to generate the cut-off line of the light distribution; a projection lens (200) for projecting the generated light distribution of the at least one light source (20) in front of the illumination device (10) in cooperation with the shutter device (100), the projection lens (200) including an optical axis (A); a holder (300) configured to hold said shutter device (100) and said projection lens (200), but preferably said at least one light source (20) being attached to said holder (300); Including, The shutter device (100) a first shutter body (110) having a first shutter surface (110a) including a first shutter edge (110b); and A second shutter body (120) having a second shutter surface (120a) including a second shutter edge (120b) It is composed of the first shutter body (110) and the second shutter body (120) are arranged relative to each other such that the first shutter edge (110b) and the second shutter edge (120b) together form a common shutter edge (150) that generates the cut-off line of the light distribution, The shutter device (100) - an aligned position of the first shutter edge (110b) and the second shutter edge (120b), where the common shutter edge (150) contributes to the creation of a straight cut-off line; and a non-aligned position of the first shutter edge (110b) and the second shutter edge (120b), where the first shutter edge (110b) and the second shutter edge (120b) are tilted relative to each other such that the common shutter edge (150) contributes to the generation of a cut-off line that deviates from a straight cut-off line; It is configured to transition between the transition between the aligned and non-aligned positions is performed by rotation of the first shutter body (110) and / or the second shutter body (120) about a common rotation axis (R) by a rotation device (400). Lighting equipment.

2. 2. The lighting device according to claim 1, The first shutter body (110) and the second shutter body (120) are independently rotatable relative to each other about the common rotation axis (R). A lighting device comprising:

3. 2. The lighting device according to claim 1, the first shutter body (110) includes a first partial circular sliding surface (111) complementary to a first opposing circular sliding surface (310) of the holder (300); The first shutter body (110) is fitted to the holder (300) so that the first partial circular sliding surface (111) and the first opposing circular sliding surface (310) can slide relative to each other. A lighting device comprising:

4. 2. The lighting device according to claim 1, the second shutter body (120) includes a second partial circular sliding surface (121) complementary to a second opposing circular sliding surface (320) of the holder (300); The second shutter body (120) is fitted to the holder (300) so that the second partial circular sliding surface (121) and the second opposing circular sliding surface (320) can slide relative to each other. A lighting device comprising:

5. 5. The lighting device according to claim 4, Each shutter body (110, 120) includes a row of teeth (130) that is partially disposed on the first partially circular sliding surface of the first shutter body (110) and partially disposed on the second partially circular sliding surface of the second shutter body (120). A lighting device comprising:

6. 2. The lighting device according to claim 1, the rotating device (400) comprises a transmission element (410) formed as a gear configured to mesh with a toothed arrangement (130) of the first shutter body (110) and / or the second shutter body (120) to convert an angular motion of the transmission element (410) into a rotational motion of the first shutter body (110) and / or the second shutter body (120) around the common rotation axis (R); Preferably, said main direction (X) is parallel to said optical axis (A) and preferably also parallel to said common axis of rotation (R). A lighting device comprising:

7. 2. The lighting device according to claim 1, The first shutter body (110) and the second shutter body (120) are mechanically connectable via at least one connecting device (500); the coupling device (500) includes a first mating element (510) and a second mating element (520); The first mating element (510) and the second mating element (520) are matable with each other such that, when mated, the coupling device (500) limits the relative rotation of the first shutter body (110) and the second shutter body (120) with respect to each other about the common rotation axis (R). A lighting device comprising:

8. 8. The lighting device according to claim 7, The first mating element (510) is provided on the first shutter body (120) or the second shutter body (120), and the second mating element (520) is provided on the second shutter body (120) or the first shutter body (110). A lighting device comprising:

9. 8. The lighting device according to claim 7, the first mating element (510) is formed as a groove and the second mating element (520) is formed as a protrusion; said groove having two opposing ends; When the protrusions abut against the respective ends of the grooves, the relative movement of the first shutter body (110) and the second shutter body (120) with respect to each other is restricted. A lighting device comprising:

10. 8. The lighting device according to claim 7, the transmission element (410) is rotatable in a plurality of different angle ranges (AR1, AR2, AR3) starting from a zero position in which the common shutter edge (150) of the shutter device (100) is linear and horizontal when viewed in a state in which the lighting device (10) is correctly installed on a vehicle; in a first angular range (AR1), the transmission element (410) meshes with the first shutter body (110) and the second shutter body (120) such that both shutter bodies (110, 120) are moved together around the common axis of rotation (R) and are in an aligned position; in a second angular range (AR2) starting from the end of the first angular range (AR1), the transmission element (410) engages with the first shutter body (110) and the second shutter body (120) such that only the first shutter body (110) is moved by the transmission element (410) resulting in a non-aligned position of the first shutter body (110) and the second shutter body (120), with the second angular range (AR2) ending when the coupling device (500) limits the relative rotation of the first shutter body (110) and the second shutter body (120) with respect to each other; in a third angular range (AR3) starting from the end of the second angular range (AR2), the transmission element (410) meshes with the first shutter body (110) and the second shutter body (120) such that only the first shutter body (110) is moved by the transmission element (410), but the second shutter body (120) is rotated by the coupling device (500) to the same extent around the common axis of rotation (R); A lighting device comprising:

11. 9. The lighting device according to claim 8, The first angle range (AR1) is from 0° to 6°, the second angle range (AR2) is from 6° to 12°, and the third angle range (AR3) starts at 12°. A lighting device comprising:

12. 2. The lighting device according to claim 1, The first shutter surface (110a) and the second shutter surface (120a) are inclined from the optical axis (A) by 3° to 5°, preferably 4°. A lighting device comprising:

13. 2. The lighting device according to claim 1, said lighting device (10) comprising a plurality of light sources (20), preferably a plurality of LEDs; Preferably, for each light source (20), at least one collimator element configured to collimate the light is assigned to said light source. A lighting device comprising:

14. A stabilized lighting device for emitting a stabilized light distribution, comprising at least one lighting device (10) according to claim 10, an external control unit and at least one roll angle sensor configured to determine a roll angle (α) from a predefined standard position of the lighting device around said main direction (X), the external control unit is configured to frequently, preferably constantly, receive a roll angle (α) from the at least one roll angle sensor and to control the transmission element (410) in dependence on the roll angle (α) in order to maintain a stabilized light distribution (30). Stabilized lighting device.

15. A motorcycle headlamp comprising at least one lighting device (10) according to any one of claims 1 to 13 and / or at least one stabilized lighting device according to claim 14.

Images