Illumination device for a motor vehicle headlamp

Abstract

A lighting device (10) for a motor vehicle headlamp, wherein the lighting device (10) comprises: - at least one light module (20) configured to emit light along a light path in a main direction (X); - a movable lower light guide element (100) and a movable upper light guide element (200); - a movement device for moving the lower light guide element (100) and the upper light guide element (200) relative to each other between: - a closed position (P1) in which the lower light guide element (100) and the upper light guide element (200) are in front of the at least one light module (20) at least partially obstructing the light path of the at least one light module (20) as shown in the main direction (X), wherein the lower light guide element (100) and the upper light guide element (200) are configured to emit light in the main direction (X) when in the closed position (P1); and - an open position (P2) in which the lower light guide element (100) and the upper light guide element (200) are moved away from the light path of the at least one light module to unblock the light path of the at least one light module (20) while maintaining its spatial orientation; - a frame (600) which is stationary relative to the movement of the lower light guide element (100) and the upper light guide element (200), wherein the frame (600) has a movement mechanism mounted thereon.

Description

Technical Field

[0001] This invention relates to a lighting device for a motor vehicle headlight, wherein the lighting device comprises: - At least one optical module is configured to illuminate light along the optical path in the main direction; - Movable upper light guide element and movable lower light guide element; - A switching device for switching the upper light guide element and the lower light guide element relative to each other between the following positions: - A closed position, wherein, as shown in the main direction, the upper light guide element and the lower light guide element are in front of the at least one optical module, at least partially blocking the optical path of the at least one optical module, wherein the upper light guide element and the lower light guide element are configured to emit light in the main direction when in the closed position; and - Open position, wherein the upper light guide element and the lower light guide element move away from the optical path of the at least one optical module to clear the optical path of the at least one optical module. At the same time, it maintains its spatial orientation; - A frame, which is stationary relative to the transition between the upper light guide element and the lower light guide element, wherein a transition mechanism is mounted on the frame.

[0002] The present invention also relates to a motor vehicle headlight, the motor vehicle headlight comprising at least one lighting device according to the present invention. Background Technology

[0003] In the prior art, lighting devices include a switching mechanism, which is often unstable and requires a large amount of space in motor vehicle headlights. Summary of the Invention

[0004] The purpose of this invention is to provide an enhanced lighting device.

[0005] To achieve this purpose, the motion device includes: - A lower motion mechanism for moving the lower light guide element between the closed position and the open position, the lower motion mechanism comprising: - A first lower moving element having at least two support points, wherein the first lower moving element is pivotally connected to the frame via fixed support points and pivotally connected to the lower light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the first lower moving element and are movable along a circular path about a first axis of rotation, the first axis of rotation being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points; and - A second lower moving element having at least two support points, wherein the second lower moving element is pivotally connected to the frame via a fixed support point and pivotally connected to the lower light guide element via a floating support point, wherein the floating support point is at a distance from the fixed support point on the second lower moving element and is movable along a circular path about a second axis of rotation, the second axis of rotation being determined by the fixed support point and having a defined radius, the defined radius being given by the distance between the floating support point and the fixed support point; Wherein the first rotation axis and the second rotation axis are perpendicular to the main direction and parallel to each other, wherein the floating support point is at the same distance from the fixed support point of the first lower moving element and the second lower moving element, and wherein the circular paths of the first lower moving element and the second lower moving element are spatially separated but identical, such that the first lower moving element and the second lower moving element have the same deflection, and wherein, as observed in the installed state of the lighting device in the motor vehicle, the floating support point of the first lower moving element and the second lower moving element is arranged above the corresponding fixed support point and is movable; The first lower moving element is mechanically engaged with a driving device configured to move the first lower moving element, and wherein the first lower moving element and the second lower moving element are connected via the lower light guide element such that when the driving device moves the first lower moving element, the first lower moving element and the second lower moving element can move about their respective fixed support points with the same deflection. Furthermore, wherein the first lower moving element and the second lower moving element are movable between a first deflection and a second deflection, such that the lower light guide element moves between the closed position and the open position, while the lower light guide element maintains its spatial orientation due to the same radius and deflection of the first lower moving element and the second lower moving element, wherein the lower light guide element is in the closed position when the first lower moving element and the second lower moving element are aligned in the first deflection; and wherein the lower light guide element is in the open position when the first lower moving element and the second lower moving element are aligned in the second deflection; - An upper motion mechanism for moving the upper light guide element between the closed position and the open position, the upper motion mechanism comprising: - A first upper moving element having at least two support points, wherein the first upper moving element is pivotally connected to the frame via fixed support points and pivotally connected to the upper light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the first upper moving element and are movable along a circular path about a third rotation axis, the third rotation axis being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points; and - A second upper moving element having at least two support points, wherein the second upper moving element is pivotally connected to the frame via fixed support points and pivotally connected to the upper light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the second upper moving element and are movable along a circular path about a fourth rotation axis, the fourth rotation axis being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points; and The third and fourth rotation axes are parallel to each other and parallel to the first and second rotation axes, the first and second upper moving elements have the same radius, and the circular paths of the first and second upper moving elements are spatially separated but congruent, such that the first and second upper moving elements have the same deflection, and the floating support points of the first and second upper moving elements are arranged below the respective fixed support points and are movable, as observed in the installed state of the lighting device in the motor vehicle. The first upper moving element and the second lower moving element are mechanically engaged in the first transmission connection, such that the rotational motion of the second lower moving element about its fixed support point is converted into the rotational motion of the first upper moving element about its fixed support point in the opposite direction. The first upper moving element and the second upper moving element are connected via the upper light guide element, such that when the second lower moving element moves the first upper moving element, the first upper moving element and the second upper moving element can move around their respective fixed support points with the same deflection. Furthermore, wherein the first upper moving element and the second upper moving element are movable between a third deflection and a fourth deflection, such that the upper light guide element moves between the closed position and the open position, while the upper light guide element maintains its spatial orientation due to the same radius and deflection of the first upper moving element and the second upper moving element, wherein the upper light guide element is in the closed position when the first upper moving element and the second upper moving element are aligned in the third deflection; and wherein the upper light guide element is in the open position when the first upper moving element and the second upper moving element are aligned in the fourth deflection; and wherein The lower motion mechanism includes: a third lower motion element having at least two support points, wherein the third lower motion element is pivotally connected to the frame via fixed support points and pivotally connected to the lower light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the third lower motion element and are movable along a circular path about a fifth rotation axis, the fifth rotation axis being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points; and wherein The upper motion mechanism includes: a third upper motion element having at least two support points, wherein the third upper motion element is pivotally connected to the frame via fixed support points and pivotally connected to the upper light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the third upper motion element and are movable along a circular path about a sixth rotation axis, the sixth rotation axis being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points; wherein The third upper moving element and the third lower moving element are mechanically engaged in the second transmission connection, such that the rotational motion of the third lower moving element about its fixed support point is converted into the rotational motion of the third upper moving element about its fixed support point in the opposite direction; and wherein Observed in the main direction and in the installed state of the lighting device in the motor vehicle, the lighting device has two opposing sides, with only one transmission connection provided on each side.

[0006] Therefore, the lower and upper motion mechanisms cause the lower and upper light guide elements to move in the following manner when transitioning from the open to the closed position: the light guide elements move simultaneously toward each other in the opposite direction to the main direction. Thus, as seen from a side view of the lighting device, the light guide elements move along a circular path.

[0007] This motion mechanism necessitates a more stable structure and less space in the lighting device within the vehicle headlight, particularly regarding the transition movement of the upper and lower light guide elements when changing from the open position to the closed position, and vice versa. Therefore, more design options and / or additional light modules are provided.

[0008] Advantageously, the lower light guide element and the upper light guide element are configured as light guide elements having a longitudinal axis, wherein the light guide is arranged such that its longitudinal axis is perpendicular to the main direction of the lighting device.

[0009] Advantageously, the lower light guide element and the upper light guide element are configured to illuminate the daytime running lights when in the closed position.

[0010] Advantageously, the lower light guide element and the upper light guide element do not emit light when they are in the open position.

[0011] Advantageously, the third upper moving element and the third lower moving element are configured as gears that mechanically mesh with each other in order to transmit the movement of the third lower moving element to the third upper moving element.

[0012] Advantageously, the second lower moving element and the first upper moving element are configured as gears that mechanically mesh with each other to transmit the movement of the second lower moving element to the first upper moving element.

[0013] Advantageously, the drive device is a linear drive device.

[0014] Advantageously, the drive device includes a motor and a drive rod, wherein the drive rod is mechanically connected to the motor via a support point and to the first lower moving element via a support point, wherein the drive rod is driven by the motor such that the drive rod moves the floating support point of the first lower moving element in a circular path about the first axis of rotation.

[0015] Advantageously, the first upper moving element and the second upper moving element are also connected via a link, wherein the link includes a support point pivotally connected to the first upper moving element and a support point pivotally connected to the second upper moving element, wherein the link is configured to guide the second upper moving element to move between the third deflection and the fourth deflection when the second lower moving element moves the first upper moving element.

[0016] Advantageously, the upper motion mechanism includes: a fourth upper motion element having at least two support points, wherein the fourth upper motion element is pivotally connected to the frame via fixed support points and pivotally connected to the upper light guide element via floating support points, wherein the floating support points are at a distance from the fixed support points on the fourth upper motion element and are movable along a circular path about a seventh rotation axis, the seventh rotation axis being determined by the fixed support points and having a defined radius, the defined radius being given by the distance between the floating support points and the fixed support points, wherein the seventh rotation axis is parallel to the sixth rotation axis; and wherein the third upper motion element and the fourth upper motion element have the same radius, and wherein the third upper motion element and the fourth upper upper motion element have the same radius. The circular paths of the moving elements are spatially separated but congruent, such that the third upper moving element and the fourth upper moving element have the same deflection, and wherein, as observed in the installation position of the lighting device in the motor vehicle, the floating support points of the third upper moving element and the fourth upper moving element are arranged below the respective fixed support points and are movable; and wherein the third upper moving element and the fourth upper moving element are also connected via a linkage, wherein the linkage includes a support point pivotally connected to the third upper moving element and a support point pivotally connected to the fourth upper moving element, wherein the linkage is configured to guide the fourth upper moving element to move between the third deflection and the fourth deflection when the third lower moving element moves the third upper moving element.

[0017] Advantageously, the lighting device includes a fault protection mechanism for manually moving the upper light guide element and the lower light guide element to the open position, wherein the fault protection mechanism includes: - A transmission element, including a threaded portion extending along a threaded axis, the transmission element being rotatably mounted on the frame about the threaded axis; - A drive device retainer for holding the drive device, wherein the drive device retainer includes a reverse thread portion corresponding to the threaded portion of the transmission element, wherein the drive device retainer mechanically engages with the transmission element via the reverse thread portion and the threaded portion; wherein the drive device retainer having the reverse thread portion and the threaded portion of the transmission element is configured to convert angular motion of the transmission element into linear motion of the drive device along the threaded axis, so as to convert rotational motion of the transmission element into linear motion; wherein the linear motion of the drive device causes a first lower motion element to move the lower light guide element and the upper light guide element to the open position.

[0018] This objective can also be achieved by a motor vehicle headlight, which includes at least one lighting device according to the invention. Attached Figure Description

[0019] In the following description, exemplary and non-limiting embodiments are discussed to further illustrate the invention, as shown in the figures, wherein: Figure 1 This is a side view of an example of a lighting device according to the invention in a closed position; Figure 2 yes Figure 1 A view of the lighting device in its closed position from the opposite side; Figure 3 yes Figure 1 Front view of the lighting device in the closed position; Figure 4 Corresponding to Figure 1 The lighting fixtures and view in the open position; Figure 5 Corresponding to Figure 2 The lighting fixtures and view in the open position; Figure 6 Corresponding to Figure 3 The lighting fixtures and view in the open position; Figure 7 yes Figure 1 The cross-section of the fault protection mechanism of the lighting device in the middle.

[0020] List of reference numerals Lighting fixtures…10 Optical modules…20 Lower light guide element…100 Upper light guide element…200 First lower moving element…310 First fixed support point (1. Lower moving element)...310a First floating support point (1. Lower moving element)...310b Second lower moving element…320 Second fixed support point (2. Lower moving element)...320a Second floating support point (2. Lower moving element)...320b Third lower motion element...330 Third fixed support point (3. Lower moving element)...330a Third floating support point (3. Lower moving element)...330b First upper motion element…410 Fourth fixed support point (1. Upper moving element)...410a Fourth floating support point (1. Upper moving element)...410b Second upper moving element…420 Fifth fixed support point (2. Upper moving element)...420a Fifth floating support point (2. Upper moving element)...420b Third upper motion element…430 Sixth fixed support point (3. Upper moving element)...430a Sixth floating support point (3. Upper moving element)...430b Fourth upper motion element…440 Seventh fixed support point (4. Upper moving element)...440a Seventh floating support point (4. Upper moving element)...440b First link... 450 Second link...460 Drive unit…500 Motor…510 Drive lever…520 First support point (rod / motor)...530 Second support point (rod / 1. Lower moving element)...540 Frame...600 Transmission components…700 Threaded part…710 Drive unit cage…800 Reverse thread section…810 Closed position…P1 Open location…P2 First radius…R1 Second radius…R2 Threaded axis…T Main direction...X First axis of rotation…Y1 Second axis of rotation…Y2 Third axis of rotation…Y3 Fourth axis of rotation…Y4 Fifth axis of rotation…Y5 Sixth axis of rotation…Y6 The seventh axis of rotation…Y7 Detailed Implementation

[0021] Figure 1 A lighting device 10 for a motor vehicle headlight is shown, wherein the lighting device 10 includes: a light module 20 configured to illuminate light along a light path in the main direction X, wherein the light module 20 is configured to illuminate the low beam distribution and / or high beam distribution in front of the lighting device 10.

[0022] Furthermore, the lighting device 10 includes: a movable lower light guide element 100 and a movable upper light guide element 200; a movement device for moving the lower light guide element 100 and the upper light guide element 200 relative to each other between: a closed position P1, wherein, as shown in the main direction X, the lower light guide element 100 and the upper light guide element 200 are in front of at least one optical module 20, at least partially blocking the light path of at least one optical module 20, wherein the lower light guide element 100 and the upper light guide element 200 are configured to emit light in the main direction X when in the closed position P1; and an open position P2, wherein the lower light guide element 100 and the upper light guide element 200 move away from the light path of the at least one optical module to clear the light path of the at least one optical module 20 while maintaining its spatial orientation. Figure 1 In the middle, the lower light guide element 100 and the upper light guide element 200 are shown in the closed position P1.

[0023] For example, in Figure 6 The image shows optical module 20, in which... Figure 6 In the front view, the lighting device 10 is shown in the open position P2, making the light module 20 visible.

[0024] In addition, the lighting device 10 includes a frame 600 that is stationary relative to the movement of the lower light guide element 100 and the upper light guide element 200, wherein a motion mechanism is mounted on the frame 600.

[0025] The motion device includes a lower motion mechanism for moving the lower light guide element 100 between a closed position P1 and an open position P2. The lower motion mechanism includes a first lower motion element 310 having at least two support points. The first lower motion element 310 is pivotally connected to the frame 600 via a first fixed support point 310a and pivotally connected to the lower light guide element 100 via a first floating support point 310b. The first floating support point 310b is at a certain distance from the first fixed support point 310a on the first lower motion element 310 and can move along a circular path around a first rotation axis Y1, which is determined by the first fixed support point 310a and has a defined first radius R1, which is given by the distance between the first floating support point 310b and the first fixed support point 310a.

[0026] therefore, Figure 1 The lighting device 10 is shown in the closed position P1, wherein Figure 4 Corresponding to Figure 1 And it is shown in the same view but in the open position P2. Figure 1 Lighting device 10.

[0027] Furthermore, the lower motion mechanism includes a second lower motion element 320 having at least two support points, wherein the second lower motion element 320 is pivotally connected to the frame 600 via a second fixed support point 320a and pivotally connected to the lower light guide element 100 via a second floating support point 320b, wherein the second floating support point 320b is at a certain distance from the second fixed support point 320a on the second lower motion element 320 and is movable along a circular path around a second rotation axis Y2, the second rotation axis being determined by the second fixed support point 320a and having a defined first radius R1, the defined first radius being given by the distance between the second floating support point 320b and the second fixed support point 320a.

[0028] The first axis of rotation Y1 and the second axis of rotation Y2 are perpendicular to the principal direction X and parallel to each other (e.g., ...). Figure 3 As shown in the figure, the floating support points 310b and 320b are at the same distance from the fixed support points 310a and 320a of the first lower moving element 310 and the second lower moving element 320.

[0029] The circular paths of the first lower moving element 310 and the second lower moving element 320 are spatially separated but identical, such that the first lower moving element 310 and the second lower moving element 320 have the same deflection, and wherein, as observed in the installation position of the lighting device 10 in the motor vehicle, the floating support points 310b, 320b of the first lower moving element 310 and the second lower moving element 320 are arranged above the corresponding fixed support points 310a, 320a and are movable.

[0030] The first lower moving element 310 is mechanically engaged with the drive device 500, which is configured to move the first lower moving element 310, and wherein the first lower moving element 310 and the second lower moving element 320 are connected via the lower light guide element 100 such that when the drive device 500 moves the first lower moving element 310, the first lower moving element 310 and the second lower moving element 320 can move about their respective fixed support points 310a, 320a with the same deflection.

[0031] The drive device 500 includes a motor 510 and a drive rod 520, wherein the drive rod 520 is mechanically connected to the motor 510 via a first support point 530 and to a first lower motion element 310 via a second support point 540, wherein the drive rod 520 is driven by the motor 510 such that the drive rod 520 moves the first floating support point 310b of the first lower motion element 310 along a circular path about a first rotation axis Y1, such as... Figure 1 As shown in more detail below.

[0032] Furthermore, the first lower motion element 310 and the second lower motion element 320 are movable between a first deflection and a second deflection, such that the lower light guide element 100 moves between a closed position P1 and an open position P2. At the same time, the lower light guide element 100 maintains its spatial orientation due to the same first radius R1 and deflection of the first lower motion element 310 and the second lower motion element 320. The lower light guide element 100 is in the closed position P1 when the first lower motion element 310 and the second lower motion element 320 are aligned in the first deflection; and the lower light guide element 100 is in the open position P2 when the first lower motion element 310 and the second lower motion element 320 are aligned in the second deflection.

[0033] The lighting device 10 further includes an upper motion mechanism for moving the upper light guide element 200 between a closed position P1 and an open position P2. The upper motion mechanism includes a first upper motion element 410 having at least two support points, wherein the first upper motion element 410 is pivotally connected to the frame 600 via a fourth fixed support point 410a and pivotally connected to the upper light guide element 200 via a fourth floating support point 410b.

[0034] The fourth floating support point 410b is at a certain distance from the fourth fixed support point 410a on the first upper moving element 410, and can move along a circular path around the third rotation axis Y3, which is determined by the fourth fixed support point 410a and has a determined second radius R2, which is given by the distance between the fourth floating support point 410b and the fourth fixed support point 410a.

[0035] The upper motion mechanism further includes: a second upper motion element 420 having at least two support points, wherein the second upper motion element 420 is pivotally connected to the frame 600 via a fifth fixed support point 420a and pivotally connected to the upper light guide element 200 via a fifth floating support point 420b, wherein the fifth floating support point 420b is at a certain distance from the fifth fixed support point 420a on the second upper motion element 420 and is movable along a circular path about a fourth rotation axis Y4, the fourth rotation axis being determined by the fifth fixed support point 420a and having a defined second radius R2, the defined radius being given by the distance between the fifth floating support point 420b and the fifth fixed support point 420a. Specifically, Figure 1 The upper motion mechanism and its components are shown.

[0036] The third rotation axis Y3 and the fourth rotation axis Y4 are parallel to each other and parallel to the first rotation axis Y1 and the second rotation axis Y2, wherein the first upper motion element 410 and the second upper motion element 420 have the same second radius R2, and wherein the circular paths of the first upper motion element 410 and the second upper motion element 420 are spatially separated but congruent, such that the first upper motion element 410 and the second upper motion element 420 have the same deflection, and wherein, as observed in the installed state of the lighting device 10 in the motor vehicle, the floating support points 410b, 420b of the first upper motion element 410 and the second upper motion element 420 are arranged below the corresponding fixed support points 410a, 420a and are movable.

[0037] The first upper motion element 410 and the second lower motion element 320 are mechanically engaged in the first transmission connection, such that the rotational motion of the second lower motion element 320 about its second fixed support point 320a is converted into the rotational motion of the first upper motion element 410 about its fourth fixed support point 410a in the opposite direction of rotation.

[0038] The first upper motion element 410 and the second upper motion element 420 are connected via the upper light guide element 200, such that when the second lower motion element 320 moves the first upper motion element 410, the first upper motion element 410 and the second upper motion element 420 can move around their respective fixed support points 410a, 420a with the same deflection.

[0039] Furthermore, the first upper motion element 410 and the second upper motion element 420 can move between a third deflection and a fourth deflection, such that the upper light guide element 200 moves between a closed position P1 and an open position P2, while the upper light guide element 200 maintains its spatial orientation due to the same second radius R2 and deflection of the first upper motion element 410 and the second upper motion element 420, wherein the upper light guide element 200 is in the closed position P1 when the first upper motion element 410 and the second upper motion element 420 are aligned in the third deflection; and wherein the upper light guide element 200 is in the open position P2 when the first upper motion element 410 and the second upper motion element 420 are aligned in the fourth deflection.

[0040] The lower motion mechanism includes a third lower motion element 330 having at least two support points, wherein the third lower motion element 330 is pivotally connected to the frame 600 via a third fixed support point 330a and pivotally connected to the lower light guide element 100 via a third floating support point 330b, wherein the third floating support point 330b is at a certain distance from the third fixed support point 330a on the third lower motion element 330 and is movable along a circular path around a fifth rotation axis Y5, the fifth rotation axis being determined by the third fixed support point 330a and having a defined first radius R1, the defined radius being given by the distance between the third floating support point 330b and the third fixed support point 330a.

[0041] The upper motion mechanism further includes: a third upper motion element 430 having at least two support points, wherein the third upper motion element 430 is pivotally connected to the frame 600 via a sixth fixed support point 430a and pivotally connected to the upper light guide element 200 via a sixth floating support point 430b, wherein the sixth floating support point 430b is at a certain distance from the sixth fixed support point 430a on the third upper motion element 430 and is movable along a circular path around a sixth rotation axis Y6, the sixth rotation axis being determined by the sixth fixed support point 430a and having a defined second radius R2, the defined second radius being given by the distance between the sixth floating support point 430b and the sixth fixed support point 430a.

[0042] The third upper motion element 430 and the third lower motion element 330 are mechanically engaged in the second transmission connection, such that the rotational motion of the third lower motion element 330 about its third fixed support point 330a is converted into the rotational motion of the third upper motion element 430 about its sixth fixed support point 430a in the opposite direction of rotation.

[0043] Furthermore, when viewed in the main direction X and in the installed state of the lighting device 10 in the motor vehicle, the lighting device 10 has two opposing sides, with only one transmission connection provided on each side.

[0044] Furthermore, the lower and upper motion mechanisms cause the lower light guide element 100 and the upper light guide element 200 to move in the following manner when transitioning from the open position P2 to the closed position P1: the light guide elements 100 and 200 move simultaneously toward each other in the opposite direction of the main direction X. Therefore, as can be seen in the side view of the lighting device 10, for example in... Figure 4 and Figure 5 In the y-direction shown, the light guide element moves along a circular path, which is represented by a dashed line in the figure.

[0045] When the light guide element changes from the closed position P1 to the open position P2, it performs a movement opposite to the movement described above.

[0046] In the example shown for the lighting device 10, the third upper motion element 430 and the third lower motion element 330 are configured as gears that mechanically mesh with each other to transmit the movement of the third lower motion element 330 to the third upper motion element 430.

[0047] Furthermore, the second lower motion element 320 and the first upper motion element 410 are configured as gears that mechanically mesh with each other in order to transmit the movement of the second lower motion element 320 to the first upper motion element 410.

[0048] Furthermore, the first upper motion element 410 and the second upper motion element 420 are also connected via a first link 450, wherein the first link 450 includes a support point pivotally connected to the first upper motion element 410 and a support point pivotally connected to the second upper motion element 420, wherein the first link 450 is configured to guide the second upper motion element 420 to move between a third deflection and a fourth deflection when the second lower motion element 320 moves the first upper motion element 410, such as... Figure 1 As shown.

[0049] Furthermore, the upper motion mechanism includes: a fourth upper motion element 440 having at least two support points, wherein the fourth upper motion element 440 is pivotally connected to the frame 600 via a seventh fixed support point 440a and pivotally connected to the upper light guide element 200 via a seventh floating support point 440b, wherein the seventh floating support point 440b is at a certain distance from the seventh fixed support point 440a on the fourth upper motion element 440 and is movable along a circular path around a seventh rotation axis Y7, which is determined by the seventh fixed support point 440a and has a defined second radius R2, which is given by the distance between the seventh floating support point 440b and the seventh fixed support point 440a, wherein the seventh rotation axis Y7 is parallel to the sixth rotation axis Y6.

[0050] The third upper moving element 430 and the fourth upper moving element 440 have the same second radius R2, and the circular paths of the third upper moving element 430 and the fourth upper moving element 440 are spatially separated but congruent, such that the third upper moving element 430 and the fourth upper moving element 440 have the same deflection, and as observed in the installed state of the lighting device 10 in the motor vehicle, the floating support points 430b, 440b of the third upper moving element 430 and the fourth upper moving element 440 are arranged below the corresponding fixed support points 430a, 440a and are movable.

[0051] The third upper motion element 430 and the fourth upper motion element 440 are also connected via a second link 460, wherein the second link 460 includes a support point pivotally connected to the third upper motion element 430 and a support point pivotally connected to the fourth upper motion element 440, wherein the second link 460 is configured to guide the fourth upper motion element 440 to move between a third deflection and a fourth deflection when the third lower motion element 330 moves the third upper motion element 430, for example, as Figure 2 As shown.

[0052] also, Figure 2 The lighting device 10 is shown in the closed position P1, wherein Figure 5 Corresponding to Figure 2 And it is shown in the same view but in the open position P2. Figure 2 Lighting device 10.

[0053] The lighting device 10 also includes a fault protection mechanism for manually moving the upper light guide element 200 and the lower light guide element 100 to the open position P2 (e.g., Figure 7 As shown), the fault protection mechanism includes: a transmission element 700, including a threaded portion 710 extending along the threaded axis T, the transmission element 700 being rotatably mounted on the frame 600 about the threaded axis T.

[0054] The fault protection mechanism further includes a drive device retainer 800 for retaining the drive device 500, wherein the drive device retainer 800 includes a reverse thread portion 810, which corresponds to the threaded portion 710 of the transmission element 700, wherein the drive device retainer 800 is mechanically engaged with the transmission element 700 through the reverse thread portion 810 and the threaded portion 710.

[0055] The drive device holder 800, which has a reverse threaded portion 810 and a threaded portion 710 of a transmission element 700, is configured to convert the angular motion of the transmission element 700 into linear motion of the drive device 500 along the thread axis T, so as to convert the rotational motion of the transmission element 700 into linear motion; wherein the linear motion of the drive device 500 causes the first lower motion element 310 to move the lower light guide element 100 and the upper light guide element 200 to the open position P2.

Claims

1. A lighting device (10) for a motor vehicle headlight, wherein the lighting device (10) comprises: - At least one optical module (20) is configured to illuminate light along the optical path in the main direction (X); - Movable lower light guide element (100) and movable upper light guide element (200). - A motion device for moving the lower light guide element (100) and the upper light guide element (200) relative to each other between the following positions: - Closed position (P1), wherein, as shown in the main direction (X), the lower light guide element (100) and the upper light guide element (200) are in front of the at least one optical module (20), at least partially blocking the optical path of the at least one optical module (20), wherein the lower light guide element (100) and the upper light guide element (200) are configured to emit light in the main direction (X) when in the closed position (P1); and - Open position (P2), wherein the lower light guide element (100) and the upper light guide element (200) move away from the optical path of the at least one optical module to clear the optical path of the at least one optical module (20). At the same time, it maintains its spatial orientation; - The frame (600) is stationary relative to the movement of the lower light guide element (100) and the upper light guide element (200), wherein a motion mechanism is mounted on the frame (600). Its features are, The motion device includes: - A lower motion mechanism for moving the lower light guide element (100) between the closed position (P1) and the open position (P2), the lower motion mechanism comprising: - A first lower motion element (310) having at least two support points, wherein the first lower motion element (310) is pivotally connected to the frame (600) via a first fixed support point (310a) and pivotally connected to the lower light guide element (100) via a first floating support point (310b), wherein the first floating support point (310b) is at a distance from the first fixed support point (310a) on the first lower motion element (310) and is movable along a circular path about a first rotation axis (Y1), the first rotation axis being determined by the first fixed support point (310a) and having a defined first radius (R1), the defined first radius being given by the distance between the first floating support point (310b) and the first fixed support point (310a); and - A second lower motion element (320) having at least two support points, wherein the second lower motion element (320) is pivotally connected to the frame (600) via a second fixed support point (320a) and pivotally connected to the lower light guide element (100) via a second floating support point (320b), wherein the second floating support point (320b) is at a distance from the second fixed support point (320a) on the second lower motion element (320) and is movable along a circular path about a second rotation axis (Y2), the second rotation axis being determined by the second fixed support point (320a) and having a determined first radius (R1), the determined first radius being given by the distance between the second floating support point (320b) and the second fixed support point (320a); Wherein the first rotation axis (Y1) and the second rotation axis (Y2) are perpendicular to the main direction (X) and parallel to each other, wherein the floating support point is at the same distance from the fixed support point of the first lower motion element (310) and the second lower motion element (320), and wherein the circular paths of the first lower motion element (310) and the second lower motion element (320) are spatially separated but identical, such that the first lower motion element (310) and the second lower motion element (320) have the same deflection, and wherein, when the lighting device (10) in the motor vehicle is installed, the floating support point of the first lower motion element (310) and the second lower motion element (320) is arranged above the corresponding fixed support point and is movable; The first lower motion element (310) is mechanically engaged with a drive device (500) configured to move the first lower motion element (310), and wherein the first lower motion element (310) and the second lower motion element (320) are connected via the lower light guide element (100) such that when the drive device (500) moves the first lower motion element (310), the first lower motion element (310) and the second lower motion element (320) can move about their respective fixed support points with the same deflection. Furthermore, wherein the first lower motion element (310) and the second lower motion element (320) are movable between a first deflection and a second deflection, such that the lower light guide element (100) moves between the closed position (P1) and the open position (P2), while the lower light guide element (100) maintains its spatial orientation due to the same first radius (R1) and deflection of the first lower motion element (310) and the second lower motion element (320), wherein the lower light guide element (100) is in the closed position (P1) when the first lower motion element (310) and the second lower motion element (320) are aligned in the first deflection; and wherein the lower light guide element (100) is in the open position (P2) when the first lower motion element (310) and the second lower motion element (320) are aligned in the second deflection. - An upper motion mechanism for moving the upper light guide element (200) between the closed position (P1) and the open position (P2), the upper motion mechanism comprising: - A first upper motion element (410) having at least two support points, wherein the first upper motion element (410) is pivotally connected to the frame (600) via a fourth fixed support point (410a) and pivotally connected to the upper light guide element (200) via a fourth floating support point (410b), wherein the fourth floating support point (410b) is at a distance from the fourth fixed support point (410a) on the first upper motion element (410) and is movable along a circular path about a third rotation axis (Y3), the third rotation axis being determined by the fourth fixed support point (410a) and having a defined second radius (R2), the defined second radius being given by the distance between the fourth floating support point (410b) and the fourth fixed support point (410a); and - A second upper motion element (420) having at least two support points, wherein the second upper motion element (420) is pivotally connected to the frame (600) via a fifth fixed support point (420a) and pivotally connected to the upper light guide element (200) via a fifth floating support point (420b), wherein the fifth floating support point (420b) is at a distance from the fifth fixed support point (420a) on the second upper motion element (420) and is movable along a circular path about a fourth rotation axis (Y4), the fourth rotation axis being determined by the fifth fixed support point (420a) and having a defined second radius (R2), the defined second radius being given by the distance between the fifth floating support point (420b) and the fifth fixed support point (420a); and The third axis of rotation (Y3) and the fourth axis of rotation (Y4) are parallel to each other and parallel to the first axis of rotation (Y1) and the second axis of rotation (Y2). The first upper motion element (410) and the second upper motion element (420) have the same second radius (R2). The circular paths of the first upper motion element (410) and the second upper motion element (420) are spatially separated but congruent, such that the first upper motion element (410) and the second upper motion element (420) have the same deflection. The floating support points of the first upper motion element (410) and the second upper motion element (420) are arranged below the corresponding fixed support points and are movable, as observed in the installation state of the lighting device (10) in the motor vehicle. The first upper motion element (410) and the second lower motion element (320) are mechanically engaged in the first transmission connection, such that the rotational motion of the second lower motion element (320) about its second fixed support point (320a) is converted into the rotational motion of the first upper motion element (410) about its fourth fixed support point (410a) in the opposite direction of rotation. The first upper motion element (410) and the second upper motion element (420) are connected via the upper light guide element (200) such that when the second lower motion element (320) moves the first upper motion element (410), the first upper motion element (410) and the second upper motion element (420) can move about their respective fixed support points with the same deflection. And wherein the first upper motion element (410) and the second upper motion element (420) are movable between a third deflection and a fourth deflection, such that the upper light guide element (200) moves between the closed position (P1) and the open position (P2), while the upper light guide element (200) maintains its spatial orientation due to the same second radius (R2) and deflection of the first upper motion element (410) and the second upper motion element (420), wherein the upper light guide element (200) is in the closed position (P1) when the first upper motion element (410) and the second upper motion element (420) are aligned in the third deflection; and wherein the upper light guide element (200) is in the open position (P2) when the first upper motion element (410) and the second upper motion element (420) are aligned in the fourth deflection; and wherein The lower motion mechanism includes: a third lower motion element (330) having at least two support points, wherein the third lower motion element (330) is pivotally connected to the frame (600) via a third fixed support point (330a) and pivotally connected to the lower light guide element (100) via a third floating support point (330b), wherein the third floating support point (330b) is at a distance from the third fixed support point (330a) on the third lower motion element (330) and is movable along a circular path about a fifth rotation axis (Y5), the fifth rotation axis being determined by the third fixed support point (330a) and having a defined first radius (R1), the defined first radius being given by the distance between the third floating support point (330b) and the third fixed support point (330a); and wherein The upper motion mechanism includes: The third upper motion element (430) has at least two support points, wherein the third upper motion element (430) is pivotally connected to the frame (600) via a sixth fixed support point (430a) and pivotally connected to the upper light guide element (200) via a sixth floating support point (430b), wherein the sixth floating support point (430b) is at a distance from the sixth fixed support point (430a) on the third upper motion element (430) and is movable along a circular path about a sixth rotation axis (Y6), the sixth rotation axis being determined by the sixth fixed support point (430a) and having a defined second radius (R2), the defined second radius being given by the distance between the sixth floating support point (430b) and the sixth fixed support point (430a); wherein The third upper moving element (430) and the third lower moving element (330) are mechanically engaged in the second transmission connection, such that the rotational motion of the third lower moving element (330) about its third fixed support point (330a) is converted into the rotational motion of the third upper moving element (430) about its sixth fixed support point (430a) in the opposite direction; and wherein When observed in the main direction (X) and in the installed state of the lighting device (10) in the motor vehicle, the lighting device has two opposing sides, with only one transmission connection provided on each side.

2. The lighting device (10) according to claim 1, wherein, The third upper motion element (430) and the third lower motion element (330) are configured as gears that mechanically mesh with each other to transmit the movement of the third lower motion element (330) to the third upper motion element (430).

3. The lighting device (10) according to claim 1, wherein, The second lower motion element (320) and the first upper motion element (410) are configured as gears that mechanically mesh with each other to transmit the movement of the second lower motion element (320) to the first upper motion element (410).

4. The lighting device (10) according to claim 1, wherein, The drive device (500) is a linear drive device.

5. The lighting device (10) according to claim 1, wherein, The drive device includes a motor (510) and a drive rod (520), wherein the drive rod (520) is mechanically connected to the motor (510) via a first support point (530) and mechanically connected to the first lower motion element (310) via a second support point (540), wherein the drive rod (520) is driven by the motor (510) such that the drive rod (520) moves the first floating support point (310b) of the first lower motion element (310) on the circular path about the first rotation axis (Y1).

6. The lighting device (10) according to claim 1, wherein, The first upper motion element (410) and the second upper motion element (420) are also connected via a first link (450), wherein the first link (450) includes a support point pivotally connected to the first upper motion element (410) and a support point pivotally connected to the second upper motion element (420), wherein the first link (450) is configured to guide the second upper motion element (420) to move between the third deflection and the fourth deflection when the second lower motion element (320) moves the first upper motion element (410).

7. The lighting device (10) according to claim 1, wherein, The upper motion mechanism includes: a fourth upper motion element (440) having at least two support points, wherein the fourth upper motion element (440) is pivotally connected to the frame (600) via a seventh fixed support point (440a) and pivotally connected to the upper light guide element (200) via a seventh floating support point (440b), wherein the seventh floating support point (440b) is at a distance from the seventh fixed support point (440a) on the fourth upper motion element (440) and is movable along a circular path about a seventh rotation axis (Y7), the seventh rotation axis being determined by the seventh fixed support point (440a) and having a defined second radius (R2), the defined second radius being given by the distance between the seventh floating support point (440b) and the seventh fixed support point (440a), wherein the seventh rotation axis (Y7) is parallel to the sixth rotation axis (Y6); and wherein The third upper moving element (430) and the fourth upper moving element (440) have the same second radius (R2), and the circular paths of the third upper moving element (430) and the fourth upper moving element (440) are spatially separated but congruent, such that the third upper moving element (430) and the fourth upper moving element (440) have the same deflection, and wherein, as observed in the installed state of the lighting device (10) in the motor vehicle, the floating support points of the third upper moving element (430) and the fourth upper moving element (440) are arranged below the corresponding fixed support points and are movable; and wherein The third upper motion element (430) and the fourth upper motion element (440) are also connected via a second link (460), wherein the second link (460) includes a support point pivotally connected to the third upper motion element (430) and a support point pivotally connected to the fourth upper motion element (440), wherein the second link (460) is configured to guide the fourth upper motion element (440) to move between the third deflection and the fourth deflection when the third lower motion element (330) moves the third upper motion element (430).

8. The lighting device (10) according to claim 1, wherein, The lighting device (10) includes a fault protection mechanism for manually moving the upper light guide element (200) and the lower light guide element (100) to the open position (P2), wherein the fault protection mechanism includes: - A transmission element (700) includes a threaded portion (710) extending along a threaded axis (T), the transmission element (700) being rotatably mounted on the frame (600) about the threaded axis (T); - A drive device retainer (800) for retaining the drive device (500), wherein the drive device retainer (800) includes a reverse thread portion (810) corresponding to the threaded portion (710) of the transmission element (700), wherein the drive device retainer (800) is mechanically engaged with the transmission element (700) through the reverse thread portion (810) and the threaded portion (710); The drive device holder (800) having the reverse thread portion (810) and the thread portion (710) of the transmission element (700) is configured to convert the angular motion of the transmission element (700) into the linear motion of the drive device (500) along the thread axis (T), so as to convert the rotational motion of the transmission element (700) into linear motion. The linear motion of the drive device (500) causes the first lower motion element (310) to move the lower light guide element (100) and the upper light guide element (200) to the open position (P2).

9. A motor vehicle headlight, the motor vehicle headlight comprising at least one lighting device (10) according to any one of claims 1 to 8.

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