Lighting device for a motor vehicle headlamp of a monorail motor vehicle

Abstract

A lighting device (10) for a motor vehicle headlight of a monorail motor vehicle for generating a segmented light distribution, wherein the lighting device (10) comprises the following: an optical body (100) comprising a base body (110) and a plurality of light guides (200) protruding from the base body (110), the light guides (200) each having a light entry face (210) and an exit face (220), wherein the exit faces (220) of adjacent light guides (200) form a common exit face (220a) of the optical body (100); a plurality of light sources (50); a projection optics (300) having an optical axis (A), wherein the base body (110) has a first and a second light emission half (110a, 110b), wherein each light emission half (110a, 110b) has a number of light guides (200) arranged at least in a first row (R1) along a straight line and in a second row (R2) along a straight line, wherein the straight lines of the first and second rows (R1, R2) are arranged offset from each other by a first angle (W1), and wherein the first and second light emission halves (110a, 110b) are arranged mirror-symmetrically to each other on the base body (110) about a vertical axis of symmetry (V).

Description

Technical Field

[0001] This invention relates to a lighting device for a motor vehicle headlight used in a monorail motor vehicle, the lighting device being used to generate a segmented light distribution, wherein the lighting device comprises the following:

[0002] - An optical body comprising a substrate and a plurality of light guides extending from the substrate, the light guides being used to form a deterministic segmented light distribution from light from a light source, each light guide having an incident surface and an exit surface, light from the light source being fed into the incident surface, and light fed into the respective light guides being emitted from the exit surface, wherein the exit surfaces of adjacent light guides form a common exit surface of the optical body.

[0003] - Multiple light sources, at least one of which is associated with the incident surface of the light guide.

[0004] - A projection optics device having an optical axis, the projection optics device being configured to image light emitted from a common exit surface in the direction of the main radiation direction in front of the lighting device.

[0005] The present invention also relates to a motor vehicle headlight having at least one lighting device according to the present invention. Background Technology

[0006] To improve the illumination of the driver's field of vision during the turning posture of a monorail vehicle, such as a motorcycle, the method is to activate an additional light segment according to the turning posture.

[0007] According to existing technology, this has so far been achieved by means of additional reflectors and / or optical modules.

[0008] However, the additional modules require a lot of structural space, and in addition, the additional modules must be pre-adjusted relative to each other, which means additional overhead. Summary of the Invention

[0009] The purpose of this invention is to provide an improved lighting device.

[0010] The objective is achieved by the following method: the substrate has a first light emitting half and a second light emitting half, wherein each light emitting half has a plurality of light guides, the plurality of light guides being arranged in at least a first row and a second row along a straight line, wherein the straight lines of the first row and the straight lines of the second row are offset from each other at a first angle, and wherein the first light emitting half and the second light emitting half are arranged mirror-symmetrically about each other on the substrate around a vertical axis of symmetry.

[0011] Here, each row includes at least two light guides arranged along corresponding straight lines. Furthermore, the straight lines extend transversely to the main radial direction, starting from the vertical axis of symmetry.

[0012] Furthermore, it can be proposed that each row participates in segmented light distribution to generate light segments, wherein light segments that can be generated by the corresponding row can be turned off and on.

[0013] Furthermore, it can be proposed that each light guide participates in segmented light distribution to generate light segments, wherein the light segments generated by the corresponding light guide can be turned off and on.

[0014] It can be proposed that the exit surfaces of adjacent light guides in a row are directly adjacent to each other, so that there are no gaps between the exit surfaces.

[0015] It can be proposed that the exit surfaces of adjacent light guides in different rows are directly adjacent to each other, so that there are no gaps between the exit surfaces.

[0016] It can be proposed that the exit surface of a row of light guides increases in size from the vertical axis of symmetry in a direction transverse to the main radiation direction X.

[0017] It can be proposed that the incident surface of the light guide is set in a common vertical plane, which is orthogonal to the optical axis of the projection optics.

[0018] It can be proposed that the light source is composed of a light-emitting diode.

[0019] It can be proposed that the light-emitting diodes can be controlled independently of each other.

[0020] It can be proposed that the common exit surface of the optical body is curved.

[0021] It can be proposed that the projection optics have a curved focal plane, wherein a common exit surface of the optics is disposed in the focal plane of the projection optics, and the common exit surface at least partially follows the curvature of the focal plane of the projection optics. Here, the exit surface mainly follows the curvature in the central angular region of the focal plane, that is, in the region near the optical axis of the projection optics.

[0022] It can be proposed that each light guide has a sidewall extending from the incident surface to the exit surface, wherein the exit surface is limited by two narrow sides and two longitudinal sides, wherein at least one side of the light guide is curved and orthogonal to the direction transverse to the main radiation direction, wherein the side of the light guide oriented toward the vertical axis of symmetry is convex and the side of the light guide oriented opposite to the vertical axis of symmetry is concave.

[0023] It can be proposed that each row has an outermost light guide disposed away from the vertical axis of symmetry and at least one inner light guide, wherein at least one inner light guide in each row has a curved side.

[0024] This cancels out the Pittsvara surface of the projection lens. The geometry, and along the segmented sloping light and dark boundaries and along the sloping light and dark boundaries in the turning posture, realize the desired intensity variation curve radially outward from the center of the light distribution.

[0025] It can be proposed that the optical body includes at least one row in the region where the two light-emitting halves converge at a vertical axis of symmetry, the row having at least two light guides, wherein the row is arranged along a straight line orthogonal to the vertical axis of symmetry, and wherein the optical body preferably includes two rows.

[0026] Therefore, it is feasible to set the segmented light distribution to high beam distribution, so that the light reaches the front area even when the high beam is running, and the minimum brightness can be avoided.

[0027] It can be proposed that the incident surface of each light guide has a parallel offset relative to the corresponding exit surface, such that, viewed in the main radiation direction, the midpoint of the exit surface and the midpoint of the incident surface are offset.

[0028] The same preventative measures are also used to move the center of gravity of the light towards the center of the light distribution in order to produce a uniform (continuous) light distribution that has a maximum value at the center.

[0029] It can be proposed that the lighting device includes a control unit and at least one roll angle sensor, the roll angle sensor being configured to determine the roll angle of the deviation of the actual position of the lighting device from a defined standard position around the main radial direction, wherein the control unit is configured to receive the roll angle from at least one roll angle sensor and to turn on and / or off each row of the light guide according to the roll angle.

[0030] It can be proposed that, when a first roll angle is detected, the control unit is configured to operate or activate the first row of the first or second light emitting half of the optical body, and wherein, when a second roll angle is detected, the control unit is configured to operate or activate the first and second rows of the first or second light emitting half of the optical body.

[0031] It can be proposed that the optical body includes a third row of light guides, the third row being offset at a second angle relative to the first row and symmetrically arranged about a vertical axis of symmetry, and wherein the optical body includes a fourth row of light guides, the fourth row being offset at a third angle relative to the first row and symmetrically arranged about a vertical axis of symmetry.

[0032] It can be proposed that, when a third roll angle is detected, the control unit is configured to operate or activate the first, second, and third rows of the first or second light emitting half of the optical body, and wherein, when a fourth roll angle is detected, the control unit is configured to operate or activate the first, second, third, and fourth rows of the first or second light emitting half of the optical body.

[0033] It can be proposed that the first roll angle is in the range of 5° to 7°, the second roll angle is in the range of 7° to 17°, the third roll angle is in the range of 17° to 27°, and the fourth roll angle is in the range of more than 27°.

[0034] It should be noted that the above angle descriptions should be understood as absolute values ​​and also include negative angles; that is, the range of the described roll angles should be understood as the turning length uniformly not only in the right direction but also in the left direction.

[0035] It can be proposed that segmented light distribution is segmented far-field light distribution.

[0036] The objective is also achieved by a motor vehicle headlight having at least one lighting device according to the invention. Attached Figure Description

[0037] The invention will now be described in more detail with reference to the exemplary accompanying drawings. Herein lies:

[0038] Figure 1 An exemplary lighting device is shown, having an optical body and downstream projection optics.

[0039] Figure 2 Showing from Figure 1 A view above the optics of the lighting device.

[0040] Figure 3 Showing from Figure 2 The image shows a rear view of an optical element having several light guides arranged in an angularly offset row.

[0041] Figure 3A The image shows a view from the rear of another exemplary optical object.

[0042] Figure 4A An exemplary light distribution with a first row of light guides in operation is shown.

[0043] Figure 4B An exemplary light distribution with a first row and a second row of light guides connected is shown.

[0044] Figure 4C An exemplary light distribution with connected first, second, and third rows of light guides is shown, and

[0045] Figure 4D An exemplary light distribution with connected first, second, third, and fourth rows of light guides is shown. Detailed Implementation

[0046] Figure 1 An exemplary lighting device 10 for a motor vehicle headlight, such as a motorcycle, is shown. The lighting device is used to generate a segmented light distribution, wherein the lighting device 10 has an optical body 100, the optical body including a base 110 and a plurality of light guides 200 extending from the base 110, the light guides being used to form a determinable segmented light distribution from light from a light source 50.

[0047] The light guides 200 each have a light incident surface 210 and an exit surface 220. Light from the light source 50 can be fed into the light incident surface, and light fed into the corresponding light guide 200 can be emitted from the exit surface. The exit surfaces 220 of adjacent light guides 200 form a common exit surface 220a of the optical body 100, and the common exit surface is curved.

[0048] The lighting device 10 also includes a plurality of light sources 50, wherein at least one light source is associated with the incident surface 210 of the light guide 200. The lighting device 10 also has a projection optics 300 having an optical axis A. The projection optics 300 is configured to image light emitted from a common exit surface 220a in front of the lighting device 10 in the main radiation direction X.

[0049] The projection optics 300 also has a curved focal plane, wherein the common exit surface 220a of the optical bodies 100 is disposed in the focal plane of the projection optics 300, wherein the common exit surface 220a follows the curvature of the focal plane of the projection optics 300.

[0050] The substrate 110 has a first light emitting half 110a and a second light emitting half 110b. The first light emitting half 110a has a plurality of light guides 200. The plurality of light guides are arranged in a first row R1 along a straight line G1, a second row R2 along a straight line G2, a third row R3 along a straight line G3, and a fourth row R4 along a straight line G4. The straight lines of the first row R1 and the second row R2 are offset from each other by a first angle W1, the straight lines of the first row R1 and the third row R3 are offset from each other by a second angle W2, and the straight lines of the first row R1 and the fourth row R4 are offset from each other by a third angle W3. The first light emitting half 110a and the second light emitting half 110b are mirror-symmetrically arranged on the substrate 110 about a vertical axis of symmetry V. Here, the second light emitting half 110b also has four rows R1', R2', R3', R4', which, like the rows of the first light emitting half 110a, have corresponding angular offsets to each other.

[0051] Here, from Figure 2 and Figure 3 As can be seen, the exit surface 220 of the row of light guides 200, R1, R1', R2, R2', R3, R3', R4, R4', increases in size from the vertical axis of symmetry V in a direction transverse to the main radiation direction (X).

[0052] Furthermore, the incident surface 210 of the light guide 200 is disposed in a common vertical plane, which is orthogonal to the optical axis A of the projection optics 300.

[0053] As from Figure 2 and Figure 3 As can also be seen, each light guide 200 has a sidewall extending from the incident surface 210 to the exit surface 220, wherein the exit surface 220 is limited by two narrow sides and two longitudinal sides, wherein at least one side of the light guide 200 orthogonal to the direction transverse to the main radial direction X is curved, wherein the side 230a of the light guide 200 oriented toward the vertical axis of symmetry V is convex, and the side 230b of the light guide 200 oriented opposite to the vertical axis of symmetry V is concave.

[0054] In addition, each row R1, R1', R2, R2', R3, R3', R4, R4' has an outermost light guide disposed away from the vertical axis of symmetry V and at least one inner light guide, wherein at least one inner light guide of each row R1, R1', R2, R2', R3, R3', R4, R4' has a curved side.

[0055] Furthermore, the incident surface 210 of each light guide 200 is parallelly offset relative to the corresponding exit surface 220, such that, viewed in the main radiation direction X, the midpoint of the exit surface 220 is offset from the midpoint of its corresponding incident surface 210, as shown in... Figure 2 and Figure 3 As can be seen from the text.

[0056] The lighting device 10 also includes a control unit and at least one roll angle sensor, the roll angle sensor being configured to determine the roll angle of the deviation of the actual position of the lighting device 10 from a defined standard position around the main radial direction X, wherein the control unit is configured to receive the roll angle from at least one roll angle sensor and, based on the roll angle, turn on and / or turn off the respective rows R1, R1', R2, R2', R3, R3', R4, R4' of the light guide 200.

[0057] Figure 3 Another example of an optical body 100 is shown, wherein the optical body 100 includes two rows 400 in a region where the two light-emitting halves converge at a vertical axis of symmetry V, each row having at least two light guides, wherein the rows 400 are arranged along a straight line orthogonal to the vertical axis of symmetry f. The above also applies to Figure 3A The implementation method.

[0058] Figure 4A , Figure 4B , Figure 4C and Figure 4D Exemplary light distributions are shown, in which a monorail vehicle, such as a motorcycle, is in a left-hand orientation or making a left turn, wherein the rows of the first light-emitting half 110a are activated according to the roll angle. It should be noted that the same applies to the corresponding right-hand orientation or right turn.

[0059] Upon detecting the first roll angle, the control unit is configured to operate or activate the first row R1 of the first light emitting half 110a or the second light emitting half 110b of the optics 100. Figure 4A As can be seen, when the second roll angle is detected, the control unit is configured to operate or activate the first row R1 and the second row R2 of the first light emitting half 110a or the second light emitting half 110b of the optics 100. Figure 4B This can be seen from the text.

[0060] Furthermore, upon detecting the third roll angle, the control unit is configured to operate or activate the first row R1, the second row R2, and the third row R3 of the first light emitting half 110a or the second light emitting half 110b of the optics 100. Figure 4CAs shown, when the fourth roll angle is detected, the control unit is configured to operate or activate the first row R1, the second row R2, the third row R3, and the fourth row R4 of the first light emitting half 110a or the second light emitting half 110b of the optics 100. Figure 4D This can be seen from the text.

[0061] Here, the first roll angle is in the range of 5° to 7°, the second roll angle is in the range of 7° to 17°, the third roll angle is in the range of 17° to 27°, and the fourth roll angle is in the range of more than 27°.

[0062] List of reference numerals

[0063] Lighting equipment 10

[0064] Light source 50

[0065] Optical body 100

[0066] Matrix 110

[0067] First light-emitting half 110a

[0068] Second light-emitting half 110b

[0069] Light guide 200

[0070] Incident surface 210

[0071] Exit surface 220

[0072] Common exit surface 220a

[0073] Projection Optics 300

[0074] Optical axis A

[0075] Main radiation direction X

[0076] Vertical axis of symmetry V

[0077] Angular offsets W1, W2, W3

[0078] Arrange R1, R2, R3, R4, 400

[0079] Lines G1, G2, G3, G4

Claims

1. A lighting device (10) for a motor vehicle headlight of a monorail motor vehicle, the lighting device being used to generate a segmented light distribution, wherein the lighting device (10) comprises the following: - An optical body (100) comprising a substrate (110) and a plurality of light guides (200) extending from the substrate (110), the light guides being used to form a determinable segmented light distribution from light from a light source (50), the light guides (200) having a light incident surface (210) and an exit surface (220), the light from the light source (50) being feedable into the light incident surface and the light feedable into the respective light guides (200) being exited from the exit surface, wherein the exit surfaces (220) of adjacent light guides (200) form a common exit surface (220a) of the optical body (100). - Multiple light sources (50), wherein at least one light source is associated with the incident surface (210) of the light guide (200), - A projection optics (300) having an optical axis (A), the projection optics (300) being configured to image light emitted from the common exit surface (220a) in the direction of the main radiation direction (X) in front of the illumination device (10). Its features are, The substrate (110) has a first light-emitting half (110a) and a second light-emitting half (110b), wherein each light-emitting half has a plurality of light guides (200), the plurality of light guides being arranged at least along a straight line in a first row (R1) and along a straight line in a second row (R2), wherein the straight lines of the first row (R1) and the second row (R2) are offset from each other by a first angle (W1), wherein the first light-emitting half (110a) and the second light-emitting half (110b) are about a vertical axis of symmetry (V) relative to each other. The light guides (200) are arranged in a mirror symmetry on the substrate (110), wherein each light guide (200) has a sidewall extending from the incident surface (210) to the exit surface (220), wherein the exit surface (220) is defined by two narrow sides and two longitudinal sides, wherein at least one side of the light guide (200) is curved, wherein the side of the light guide (200) oriented toward the vertical axis of symmetry (V) is convex, and the side of the light guide (200) oriented opposite to the vertical axis of symmetry (V) is concave.

2. The lighting device according to claim 1, characterized in that, The exit surface (220) of a row of light guides (200) increases from the vertical axis of symmetry (V).

3. The lighting device according to claim 1 or 2, characterized in that, The incident surface (210) of the light guide (200) is disposed in a common vertical plane, which is orthogonal to the optical axis (A) of the projection optics (300).

4. The lighting device according to claim 1 or 2, characterized in that, The common exit surface (220a) of the optical body (100) is curved.

5. The lighting device according to claim 1 or 2, characterized in that, The projection optics (300) has a curved focal plane, wherein a common exit surface (220a) of the optical bodies (100) is disposed in the focal plane of the projection optics (300), wherein the common exit surface (220a) at least partially follows the curvature of the focal plane of the projection optics (300).

6. The lighting device according to claim 1 or 2, characterized in that, Each row has an outermost light guide disposed away from the vertical axis of symmetry (V) and at least one inner light guide, wherein at least one inner light guide in each row has a curved side.

7. The lighting device according to claim 1 or 2, characterized in that, The optical body includes at least one row (400) in the region where the two light-emitting halves converge at the vertical axis of symmetry (V), the row having at least two light guides, wherein the row (400) is arranged along a straight line orthogonal to the vertical axis of symmetry (V).

8. The lighting device according to claim 7, characterized in that, The optical element comprises two rows (400).

9. The lighting device according to claim 1 or 2, characterized in that, The incident surface (210) of each light guide (200) is parallel offset relative to the corresponding exit surface (220), such that, when viewed in the main radiation direction (X), the midpoint of the exit surface (220) and the midpoint of the incident surface (210) are offset.

10. The lighting device according to claim 1 or 2, characterized in that, The lighting device (10) includes a control unit and at least one roll angle sensor, the roll angle sensor being configured to determine the roll angle of the deviation of the actual position of the lighting device (10) from a defined standard position around the main radial direction (X), wherein the control unit is configured to receive the roll angle from the at least one roll angle sensor and to turn on and / or off each row of the light guide (200) according to the roll angle.

11. The lighting device according to claim 10, characterized in that, When a first roll angle is detected, the control unit is configured to operate or activate the first row (R1) of the first light emitting half (110a) or the second light emitting half (110b) of the optical body (100), and when a second roll angle is detected, the control unit is configured to operate or activate the first row (R1) and the second row (R2) of the first light emitting half (110a) or the second light emitting half (110b) of the optical body (100).

12. The lighting device according to claim 10, characterized in that, The optical body (100) includes a third row (R3) of light guides (200) that are offset at a second angle relative to the first row (R1) and are symmetrically arranged around the vertical axis of symmetry (V), and wherein the optical body (100) includes a fourth row (R4) of light guides that are offset at a third angle relative to the first row (R1) and are symmetrically arranged around the vertical axis of symmetry (V).

13. The lighting device according to claim 12, characterized in that, When a third roll angle is detected, the control unit is configured to operate or activate the first row (R1), second row (R2), and third row (R3) of the first light emitting half (110a) or the second light emitting half (110b) of the optical body (100), and wherein when a fourth roll angle is detected, the control unit is configured to operate or activate the first row (R1), second row (R2), third row (R3), and fourth row (R4) of the first light emitting half (110a) or the second light emitting half (110b) of the optical body (100).

14. The lighting device according to claim 1 or 2, characterized in that, The segmented light distribution refers to either segmented high-beam distribution or low-beam distribution.

15. A headlight for a motor vehicle having a lighting device (10) according to any one of claims 1 to 14.

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