Dimming mechanism, vehicle headlight module, vehicle headlight and vehicle

Abstract

The present invention relates to a vehicle lamp component, and discloses a dimming mechanism, which includes a fixed ball head connector, a first adjustable ball head connector and a second adjustable ball head connector; one end of the fixed ball head connector is connected to the lighting unit, and the other end is connected to the support frame or the lamp body; one end of the first adjustable ball head connector is connected to the lighting unit, so as to drive the lighting unit to rotate through the first adjustable ball head connector to achieve dimming in the first direction; a sliding groove is provided on the lighting unit, and one end of the second adjustable ball head connector is slidably connected to the sliding groove, so as to drive the sliding groove to rotate through the forward and backward movement of the second adjustable ball head connector, and can drive the lighting unit to rotate through the rotation of the sliding groove to achieve dimming in the second direction. The present invention also discloses a vehicle lamp module, a vehicle lamp and a vehicle including the above dimming mechanism. The dimming mechanism can realize the miniaturization of the size of the vehicle lamp module in the second direction, and can improve the dimming accuracy in the second direction.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp component, and specifically, to a dimming mechanism. In addition, the present invention also relates to a vehicle lamp module, a vehicle lamp, and a vehicle. Background Art

[0002] For vehicle lamps, especially headlamps, it is necessary to dim and calibrate their light patterns to the standard position before use or during installation. Therefore, a dimming mechanism needs to be provided on the vehicle lamp module to adjust the angles of the lighting unit in the up / down or left / right directions relative to the standard position (a standard screen, which is a vertical screen 25 m in front of the vehicle for the low beam or high beam of the headlamp) or between the lighting units. As Figures 1 - 3 shown, where P0 is the light pattern at the standard position, and P1, P2, P3, and P4 are the light patterns with position offsets. The light pattern shown by P1 needs to be dimmed downward, the light pattern shown by P2 needs to be dimmed upward, the light pattern shown by P3 needs to be dimmed to the right, and the light pattern shown by P4 needs to be dimmed to the left, so as to obtain the light pattern P0 at the standard position.

[0003] Currently, as Figures 4 - 7 shown, the dimming mechanism used includes three ball screw assemblies 1. The ball screw assembly 1 includes a ball screw 11 and a ball nut 12. The shaft of the ball screw 11 is provided with threads and is connected to the support frame or the lamp body through the threads. The front end of the ball screw 11 is provided with a ball head, and the ball head cooperates with the ball nut 12 provided with a ball socket. The ball nut 12 is fixedly connected to the lighting unit 2. Among the three ball screw assemblies 1, one ball screw assembly 1 is set as a ball screw assembly 1 that is relatively fixed to the support frame or the lamp body, and the other two ball screw assemblies 1 are set as adjustable ball screw assemblies 1 that can move back and forth relative to the support frame or the lamp body. One of the adjustable ball screw assemblies 1 is arranged below the fixed ball screw assembly 1. By rotating the ball screw 11 of the adjustable ball screw assembly 1, the ball screw 11 moves back and forth relative to the support frame or the lamp body, so that the lighting unit 2 rotates up and down relative to the support frame or the lamp body around the horizontal dimming axis, realizing dimming in the up / down direction; the other adjustable ball screw assembly 1 is arranged on the left or right side of the fixed ball screw assembly 1. By rotating the ball screw 11 of the adjustable ball screw assembly 1, the ball screw 11 moves back and forth relative to the support frame or the lamp body, so that the lighting unit 2 rotates left and right relative to the support frame or the lamp body around the vertical dimming axis, realizing dimming in the left / right direction. Among them, the horizontal dimming axis is a horizontal axis formed by connecting the ball centers of the ball heads of the adjustable ball screw assembly 1 located on the left or right side of the fixed ball screw assembly 1 and the ball center of the ball head of the fixed ball screw assembly 1, and the vertical dimming axis is a vertical axis formed by connecting the ball centers of the ball heads of the adjustable ball screw assembly 1 located below the fixed ball screw assembly 1 and the ball center of the ball head of the fixed ball screw assembly 1.

[0004] Although the above dimming mechanism can achieve dimming in the up-down and left-right directions, there are at least the following two deficiencies: (1) In order to achieve up-down and left-right dimming, the adjustable ball screw assembly 1 must be arranged on the side or below the fixed ball screw assembly 1, making the overall up-down or left-right dimension a of the dimming mechanism relatively large, and unable to meet the space layout requirements of headlight modules with increasingly smaller up-down or left-right dimensions; (2) If the up-down or left-right dimension of the headlight module is small, the distance L between the two ball screw assemblies 1 in the up-down direction or between the two ball screw assemblies 1 in the left-right direction will be short, resulting in a short power arm for rotation. A small amount of movement before and after the adjustable ball screw assembly 1 will cause the lighting unit 2 to rotate by a large angle, and the dimming accuracy is low. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a dimming mechanism that can miniaturize the size of the headlight module in the second direction and improve the dimming accuracy in the second direction.

[0006] The second technical problem to be solved by the present invention is to provide a headlight module whose dimming mechanism can miniaturize the size of the headlight module in the second direction and improve the dimming accuracy in the second direction.

[0007] The third technical problem to be solved by the present invention is to provide a vehicle headlight whose dimming mechanism can miniaturize the size of the headlight module in the second direction and improve the dimming accuracy in the second direction.

[0008] The fourth technical problem to be solved by the present invention is to provide a vehicle whose dimming mechanism can miniaturize the size of the headlight module in the second direction and improve the dimming accuracy in the second direction.

[0009] To solve the above technical problems, a first aspect of the present invention provides a dimming mechanism for dimming a lighting unit, including a fixed ball head connector, a first adjustable ball head connector, and a second adjustable ball head connector; one end of the fixed ball head connector is connected to the lighting unit, and the other end is connected to a support frame or a lamp body; one end of the first adjustable ball head connector is connected to the lighting unit, and the other end is supported on the support frame or the lamp body. The first adjustable ball head connector can move back and forth relative to the support frame or the lamp body, so as to realize dimming in a first direction by driving the lighting unit to rotate; a sliding groove is provided on the lighting unit, one end of the second adjustable ball head connector is slidably connected to the sliding groove, and the other end is supported on the support frame or the lamp body. The second adjustable ball head connector can move back and forth relative to the support frame or the lamp body, so as to drive the sliding groove to rotate, and can drive the lighting unit to rotate through the rotation of the sliding groove to realize dimming in a second direction.

[0010] Preferably, the connection line between the ball centers of the ball head of the fixed ball head connector and the ball head of the first adjustable ball head connector extends along the first direction, and the second adjustable ball head connector is arranged behind the fixed ball head connector and the first adjustable ball head connector.

[0011] Further preferably, the first direction is the up-down direction, and the second direction is the left-right direction; the ball centers of the ball head of the fixed ball head connector, the ball head of the first adjustable ball head connector, and the ball head of the second adjustable ball head connector are located in the same vertical plane.

[0012] Even more preferably, an angle is formed between the sliding groove and the vertical plane.

[0013] Preferably, the first direction is the left-right direction, and the second direction is the up-down direction; the ball centers of the ball head of the fixed ball head connector, the ball head of the first adjustable ball head connector, and the ball head of the second adjustable ball head connector are located in the same horizontal plane.

[0014] Further preferably, an angle is formed between the sliding groove and the horizontal plane.

[0015] Typically, the fixed ball head connector, the first adjustable ball head connector, and the second adjustable ball head connector are all ball head screw assemblies, and the ball head screw assembly includes a ball head screw and a ball head nut.

[0016] Preferably, the ball head nut of the second adjustable ball head connector is provided with a fixing part, and a slider adapted to slide in the sliding groove is provided on the fixing part.

[0017] Further preferably, the second direction is the up-and-down direction, and gaps are provided on both the left and right sides between the slider and the chute; or the second direction is the left-and-right direction, and gaps are provided on both the upper and lower sides between the slider and the chute.

[0018] Preferably, a slider is provided on the ball nut of the second adjustable ball head connector, and the slider is clamped in the chute.

[0019] In a second aspect, the present invention provides a vehicle lamp module, which includes the light regulating mechanism and the lighting unit according to any one of the technical solutions in the first aspect above.

[0020] Preferably, the lighting unit includes a heat dissipation member, and the chute is integrally or detachably provided on the heat dissipation member.

[0021] In a third aspect, the present invention provides a vehicle lamp, which includes the vehicle lamp module according to any one of the technical solutions in the second aspect above.

[0022] In a fourth aspect, the present invention provides a vehicle, which includes the vehicle lamp according to the third aspect above.

[0023] Through the above technical solutions, the light regulating mechanism of the present invention realizes light regulation in the first direction by driving the rotation of the lighting unit through the forward and backward movement of the first adjustable ball head connector, and realizes light regulation in the second direction by driving the rotation of the chute and the lighting unit through the forward and backward movement of the second adjustable ball head connector. This light regulating mechanism does not need to arrange the second adjustable ball head connector on one side of the fixed ball head connector along the second direction, which can reduce the size a' of the lighting unit in the second direction and realize miniaturization of the lighting unit in the second direction. Moreover, the second adjustable ball head connector is arranged behind the fixed ball head connector and the first adjustable ball head connector, which can increase the distance between the ball center of the second adjustable ball head connector and the second rotating shaft, that is, the power arm of the rotation of the lighting unit in the second direction increases. Compared with the prior art, when the second adjustable ball head connector moves the same distance, the light regulating mechanism provided by the present invention will make the rotation amount of the lighting unit in the second direction smaller, and the accuracy of light regulation in the second direction is higher.

[0024] Other advantages of the present invention and the technical effects of the preferred implementation manners will be further described in the following specific implementation manners. Description of the Drawings

[0025] Figure 1 is the standard light pattern diagram in the standard position;

[0026] Figure 2 is the up-and-down offset light pattern diagram;

[0027] Figure 3 is the left-and-right offset light pattern diagram;

[0028] Figure 4 is one of the structural schematic diagrams of the headlight module of the prior art;

[0029] Figure 5 is Figure 4 the exploded view of;

[0030] Figure 6 is another structural schematic diagram of the headlight module of the prior art;

[0031] Figure 7 is the third structural schematic diagram of the headlight module of the prior art;

[0032] Figure 8 is one of the three-dimensional structural schematic diagrams of the light dimming mechanism according to a specific embodiment of the present invention, which shows the support frame or the lamp body;

[0033] Figure 9 is the second three-dimensional structural schematic diagram of the light dimming mechanism according to a specific embodiment of the present invention;

[0034] Figure 10 is the top view of the light dimming mechanism according to a specific embodiment of the present invention;

[0035] Figure 11 is the rear view of the light dimming mechanism according to a specific embodiment of the present invention;

[0036] Figure 12 is the side view of the light dimming mechanism according to a specific embodiment of the present invention;

[0037] Figure 13 is the exploded view of the light dimming mechanism according to a specific embodiment of the present invention;

[0038] Figure 14 is the third three-dimensional structural schematic diagram of the light dimming mechanism according to a specific embodiment of the present invention;

[0039] Figure 15 is Figure 14 the enlarged schematic diagram of part A in;

[0040] Figure 16 is the structural schematic diagram of the light dimming mechanism according to a specific embodiment of the present invention;

[0041] Figure 17 is according to Figure 16 the schematic diagram of the B-B section in;

[0042] Figure 18 is according to Figure 16 the schematic diagram of the C-C section in;

[0043] Figure 19 is the schematic diagram of the left-right direction light dimming principle of the light dimming mechanism according to a specific embodiment of the present invention;

[0044] Figure 20 It is a schematic diagram of the up-and-down dimming principle of the dimming mechanism according to a specific embodiment of the present invention;

[0045] Figure 21 It is one of the three-dimensional structure diagrams of the dimming mechanism according to another specific embodiment of the present invention;

[0046] Figure 22 It is the second of the three-dimensional structure diagrams of the dimming mechanism according to another specific embodiment of the present invention;

[0047] Figure 23 It is Figure 22 the enlarged schematic diagram of part D in

[0048] Figure 24 It is the exploded view of the dimming mechanism according to another specific embodiment of the present invention;

[0049] Figure 25 It is Figure 24 the enlarged schematic diagram of part E in

[0050] Explanation of reference numerals

[0051] 1 Ball screw assembly 2 Lighting unit

[0052] 3 Support frame or lamp body 4 Slide groove

[0053] 5 Fixed part

[0054] 11 Ball screw 12 Ball nut

[0055] 21 Heat sink

[0056] 1a Fixed ball connector 1b First adjustable ball connector

[0057] 1c Second adjustable ball connector

[0058] 6a Slide block 6b Slide block

[0059] Ⅰ First rotating shaft Ⅱ Second rotating shaft Specific embodiments

[0060] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0061] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connection" and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] It should be understood that, as Figure 1 , based on the headlight module, "front" refers to the direction pointed by the light emission direction, "rear" refers to the direction opposite to "front", "left" refers to the left side along the light emission direction, "right" refers to the right side along the light emission direction, that is, the same as the left and right sides of the vehicle during normal driving, "up" refers to the upper side along the light emission direction, and "down" refers to the lower side along the light emission direction. The terms are based on the direction or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0063] In the basic embodiment of the present invention, as Figures 8 - 18 and Figures 21 - 25 shown, a dimming mechanism is provided, including a fixed ball head connector 1a, a first adjustable ball head connector 1b, and a second adjustable ball head connector 1c; one end of the fixed ball head connector 1a is connected to the lighting unit 2, and the other end is connected to the support frame or the lamp body 3; one end of the first adjustable ball head connector 1b is connected to the lighting unit 2, and the other end is supported on the support frame or the lamp body 3. The first adjustable ball head connector 1b can move back and forth relative to the support frame or the lamp body 3, so as to realize dimming in the first direction by driving the lighting unit 2 to rotate; a sliding groove 4 is provided on the lighting unit 2. One end of the second adjustable ball head connector 1c is slidably connected to the sliding groove 4, and the other end is supported on the support frame or the lamp body 3. The second adjustable ball head connector 1c can move back and forth relative to the support frame or the lamp body 3, so as to drive the sliding groove 4 to rotate, and can drive the lighting unit 2 to rotate through the rotation of the sliding groove 4 to realize dimming in the second direction.

[0064] Specifically, the first direction can be set to any direction, such as the left-right direction, the up-down direction, or other directions; the second direction can also be set to any direction, but the first direction and the second direction need to be set to two different directions. Preferably, the first direction and the second direction are perpendicular to each other to more accurately adjust the position of the light pattern. The following takes the first direction and the second direction being perpendicular to each other as an example for further explanation.

[0065] More specifically, the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c can be a ball screw assembly 1, or a rod with a ball head structure. The fixed ball joint connector 1a can be any ball joint connector that can achieve the fixed connection between the support frame or the lamp body 3 and the lighting unit 2 without affecting the rotation between the fixed ball joint connector 1a and the lighting unit 2, or can be a ball screw assembly 1 or a rod with a ball head structure like the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c. The ball screw assembly includes a ball screw 11 and a ball nut 12. The rod with a ball head structure replaces the screw of the ball screw assembly with a rod without threads. When the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c are the ball screw assembly 1, two holes suitable for the ball screw 11 in the ball screw assembly 1 to pass through are provided on the support frame or the lamp body 3, and internal threads adapted to the external threads of the ball screw 11 are provided inside both of these two holes. During operation, the ball screw 11 is rotated to make the ball screw assembly 1 move back and forth, thereby driving the rotation of the lighting unit 2. When the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c are rods with a ball head structure, two holes suitable for the rods of the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c to be inserted into are provided on the support frame or the lamp body 3, and the size of the holes is set so as not to affect the sliding of the first adjustable ball joint connector 1b or the second adjustable ball joint connector 1c in the front-back direction inside them. During operation, the front-back sliding of the rod with a ball head structure is controlled, thereby driving the rotation of the lighting unit 2. Of course, the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c can also be telescopic members with a ball head structure, that is, the screw of the ball screw assembly is replaced with a telescopic rod, and the telescopic rod can be fixedly connected to the support frame or the lamp body 3, and the rotation of the lighting unit 2 is driven by the expansion and contraction of the telescopic rod. Preferably, the first adjustable ball joint connector 1b and the second adjustable ball joint connector 1c are the ball screw assembly 1, which can be finely adjusted and has higher precision.

[0066] The chute 4 can be detachably or integrally connected to the lighting unit 2. Preferably, the chute 4 is integrally connected to the lighting unit 2, which can reduce the installation steps of the vehicle lamp.

[0067] When the dimming mechanism provided by the above basic embodiment works, taking the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c as the ball head screw assembly 1 for example, when dimming in the first direction, a rotating pair structure is formed by the ball head of the ball head screw 11 in the fixed ball head connector 1a and the ball head nut 12 matched with it, and a rotating pair structure is formed by the ball head of the ball head screw 11 in the first adjustable ball head connector 1b and the ball head nut 12 matched with it. Through the forward and backward movement of the first adjustable ball head connector 1b, the lighting unit 2 rotates around a straight line passing through the ball center of the fixed ball head connector 1a and perpendicular to the first direction as the first rotation axis I, so that the light shape of the lighting unit 2 moves along the first direction, as Figure 19 shown. When dimming in the second direction, a rotating pair structure is formed by the ball head of the ball head screw 11 in the fixed ball head connector 1a and the ball head nut 12 matched with it, a rotating pair structure is formed by the ball head of the ball head screw 11 in the first adjustable ball head connector 1b and the ball head nut 12 matched with it, and a rotating pair structure is formed by the ball head of the ball head screw 11 in the second adjustable ball head connector 1c and the ball head nut 12 matched with it. Through the forward and backward movement of the second adjustable ball head connector 1c, the sliding groove 4 rotates around the connection line of the ball centers of the fixed ball head connector 1a and the first adjustable ball head connector 1b as the second rotation axis II, thereby driving the lighting unit 2 to rotate, and further moving the light shape of the lighting unit 2 along the second direction, as Figure 20 shown.

[0068] Specifically, the connection line of the ball centers of the fixed ball head connector 1a and the first adjustable ball head connector 1b, that is, the above-mentioned second rotation axis II, extends along the first direction. The second adjustable ball head connector 1c is arranged behind the fixed ball head connector 1a and the first adjustable ball head connector 1b, so as to be able to reduce the size a' of the lighting unit 2 in the second direction and increase the distance L' between the ball center of the second adjustable ball head connector 1c and the second rotation axis II, realizing the miniaturization of the lighting unit 2 in the second direction and the dimming accuracy.

[0069] The dimming mechanism provided by the above basic embodiment drives the rotation of the lighting unit 2 through the forward and backward movement of the first adjustable ball head connector 1b to achieve dimming in the first direction, and drives the rotation of the chute 4 and the lighting unit 2 through the forward and backward movement of the second adjustable ball head connector 1c to achieve dimming in the second direction. This dimming mechanism does not require the second adjustable ball head connector 1c to be arranged on one side of the fixed ball head connector 1a in the second direction, which can reduce the size a' of the lighting unit 2 in the second direction and realize the miniaturization of the lighting unit 2 in the second direction. Moreover, the second adjustable ball head connector 1c is arranged behind the fixed ball head connector 1a and the first adjustable ball head connector 1b, which can increase the distance L' between the ball center of the ball head of the second adjustable ball head connector 1c and the second rotating shaft II, that is, the power arm of the rotation of the lighting unit 2 in the second direction increases. As Figure 12 shown, compared with the prior art, when the second adjustable ball head connector 1c moves the same distance, the dimming mechanism provided by the present invention will make the rotation amount of the lighting unit 2 in the second direction smaller, and the dimming accuracy in the second direction is higher.

[0070] In a specific embodiment of the present invention, in order to increase the dimming accuracy in the first direction, the first adjustable ball head connector 1b is arranged at one end of the lighting unit 2 far from the fixed ball head connector 1a. By arranging the first adjustable ball head connector 1b at one end of the lighting unit 2 far from the fixed ball head connector 1a, the power arm of the rotation of the lighting unit 2 during dimming in the first direction can be increased, so that when the first adjustable ball head connector 1b moves the same distance, the rotation angle of the lighting unit 2 is smaller, thereby improving the dimming accuracy.

[0071] In a specific embodiment of the present invention, the first direction is the up and down direction, and the second direction is the left and right direction; the ball centers of the ball heads of the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are located in the same vertical plane, which can reduce the components generated in the left and right directions during dimming in the up and down direction. This specific embodiment can reduce the size of the lighting unit 2 in the left and right directions and realize the miniaturization of the vehicle lamp module in the left and right directions.

[0072] In a specific embodiment of the present invention, in order to drive the rotation of the chute 4 through the forward and backward movement of the second adjustable ball head connector 1c to achieve dimming of the lighting unit 2 in the left and right directions, the included angle formed between the chute 4 and the above vertical plane can be 0° - 90°, preferably 15° - 60°. Specifically, it can be specifically set by those skilled in the art according to the actual use and installation conditions.

[0073] In a specific embodiment of the present invention, the first direction is the left and right direction, and the second direction is the up and down direction; asFigure 11 As shown, the centers of the spherical ball of the fixed spherical ball connector 1a, the center of the spherical ball of the first adjustable spherical ball connector 1b, and the center of the spherical ball of the second adjustable spherical ball connector 1c are placed in the same horizontal plane, which can reduce the components generated in the up-and-down direction when dimming in the left-and-right direction. This specific embodiment can reduce the size of the lighting unit 2 in the up-and-down direction and achieve miniaturization of the vehicle lamp module in the up-and-down direction.

[0074] In order to drive the rotation of the chute 4 through the forward and backward movement of the second adjustable spherical ball connector 1c to achieve dimming of the lighting unit 2 in the up-and-down direction, in a specific embodiment of the present invention, the included angle formed between the chute 4 and the above-mentioned horizontal plane can be 0° - 90°, preferably 15° - 60°. Specifically, it can be specifically set by those skilled in the art according to the actual use and installation conditions.

[0075] In a specific embodiment of the present invention, as Figure 13 , Figure 17 and Figure 18 shown, the fixed spherical ball connector 1a, the first adjustable spherical ball connector 1b, and the second adjustable spherical ball connector 1c are all spherical ball screw assemblies 1. The spherical ball screw assembly 1 includes a spherical ball screw 11 and a spherical ball nut 12. A fixing portion 5 is clamped on the spherical ball nut 12 of the second adjustable spherical ball connector 1c, and a slider 6a adapted to slide in the chute 4 is provided on the fixing portion 5. Specifically, the fixing portion 5 can be an annular structure. A clamping groove is provided on the spherical ball nut 12 of the second adjustable spherical ball connector 1c, and the fixing portion 5 is clamped on the spherical ball nut 12 of the second adjustable spherical ball connector 1c through the clamping groove to prevent the relative sliding of the second adjustable spherical ball connector 1c on the fixing portion 5. A slider 6a adapted to slide in the chute 4 is provided on the outer side of the fixing portion 5.

[0076] During the forward and backward movement of the second adjustable spherical ball connector 1c, the second adjustable spherical ball connector 1c will drive the movement of the fixing portion 5, thereby driving the slider 6a to move forward and backward and slide in the chute 4. Since the chute 4 is inclined with respect to the plane where the centers of the spherical ball of the fixed spherical ball connector 1a, the center of the spherical ball of the first adjustable spherical ball connector 1b, and the center of the spherical ball of the second adjustable spherical ball connector 1c are located, the forward and backward movement of the slider 6a will cause the chute 4 and the lighting unit 2 to rotate around the connection line between the centers of the spherical ball of the fixed spherical ball connector 1a and the first adjustable spherical ball connector 1b as the second rotation axis II, thereby realizing dimming in the second direction. For example: when the second direction is the left-and-right direction, the lighting unit 2 rotates around the second rotation axis II, thereby realizing dimming in the left-and-right direction; as Figure 9 shown, when the second direction is the up-and-down direction, the lighting unit 2 rotates around the second rotation axis II, thereby realizing dimming in the up-and-down direction.

[0077] When dimming in the first direction, rotate the first adjustable ball head connector 1b. The first adjustable ball head connector 1b moves back and forth relative to the support frame or the lamp body 3, driving the lighting unit 2 to rotate along the first direction around a straight line passing through the center of the ball of the fixed ball head connector 1a and perpendicular to the first direction, realizing dimming in the first direction. At this time, the lighting unit 2 rotates relative to the support frame or the lamp body 3 in the first direction. Since the chute 4 is integrally provided on the lighting unit 2, and the second adjustable ball head connector 1c and the slider 6a are fixed relative to the support frame or the lamp body 3, the chute 4 rotates relative to the slider 6a in the first direction. Therefore, there is a gap between the chute 4 and the slider 6a in the first direction to enable relative movement between the two. For example, as Figure 14 、 Figure 15 shown, when the first direction is the left-right direction, gaps are provided on both the left and right sides between the chute 4 and the slider 6a; for another example, when the first direction is the up-down direction, gaps are provided on both the upper and lower sides between the chute 4 and the slider 6a. At the same time, since the chute 4 and the slider 6a are in inclined surface contact fit, the chute 4 will move in the first direction relative to the slider 6a and also move in the second direction, causing the lighting unit 2 to have a slight rotation in the second direction. Therefore, when dimming, dimming in the first direction is preferred first, and then dimming in the second direction. This is because when dimming in the first direction, the lighting unit 2 will also have a slight rotation in the second direction. If dimming in the second direction is carried out first, the projected light pattern of the lighting unit 2 reaches the standard position in the second direction. After dimming in the first direction, it deviates from the standard position in the second direction due to the slight rotation of the lighting unit 2, reducing the dimming accuracy in the second direction.

[0078] In another specific embodiment of the present invention, as Figures 22 - 25 shown, the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are all ball head screw assemblies 1. The ball head screw assembly 1 includes a ball head screw 11 and a ball head nut 12. A slider 6b is provided on the ball head nut 12 of the second adjustable ball head connector 1c, and the slider 6b is arranged in the chute 4. The slider 6b is preferably integrally provided on the ball head nut 12.

[0079] Specifically, the chute 4 here can be a gap formed by two rod-shaped structures suitable for the slider 6b to be inserted. An opening is provided at one end of the slider 6b away from the ball head nut 12, which can make the slider 6b have better elasticity, so as to facilitate the better insertion of the slider 6b into the chute 4 and be better fixed in the chute 4, so that when no dimming operation is performed, the relative position of the slider 6b and the chute is fixed to maintain the stability of the projected light pattern of the lighting unit 2.

[0080] During the forward and backward movement of the second adjustable ball head connector 1c, the second adjustable ball head connector 1c drives the slider 6b to move forward and backward and slide within the chute 4. To enable the chute 4 to accommodate the sliding of the slider 6b, since the chute 4 is inclined with respect to the plane where the centers of the balls of the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are located, the forward and backward movement of the slider 6b causes the chute 4 and the lighting unit 2 to rotate about the connection line between the centers of the balls of the fixed ball head connector 1a and the first adjustable ball head connector 1b as the second rotation axis II, thereby achieving dimming in the second direction. For example, when the second direction is the left-right direction, the lighting unit 2 rotates about the second rotation axis II, thereby achieving dimming in the left-right direction; when the second direction is the up-down direction, the lighting unit 2 rotates about the second rotation axis II, thereby achieving dimming in the up-down direction.

[0081] In a relatively preferred embodiment of the present invention, taking the first direction as the left-right direction as an example, as Figures 8 - 18 shown, the dimming mechanism includes a fixed ball head connector 1a, a first adjustable ball head connector 1b, and a second adjustable ball head connector 1c. The adjustable ball head connector 1b and the fixed ball head connector 1a are arranged at the left and right ends of the lighting unit 2, and the connection line between the centers of their balls is a horizontal line; one end of the fixed ball head connector 1a is connected to the lighting unit 2, and the other end is connected to the support frame or the lamp body 3; one end of the first adjustable ball head connector 1b is connected to the lighting unit 2, and the other end is supported on the support frame or the lamp body 3. The first adjustable ball head connector 1b can move forward and backward relative to the support frame or the lamp body 3; a chute 4 is provided on the lighting unit 2. One end of the second adjustable ball head connector 1c is provided with a fixing portion 5, and a slider 6a adapted to slide within the chute 4 is provided on the fixing portion 5. Gaps are provided on both the left and right sides between the slider 6a and the chute 4. The other end of the second adjustable ball head connector 1c is supported on the support frame or the lamp body 3. The second adjustable ball head connector 1c can move forward and backward relative to the support frame or the lamp body 3. The centers of the balls of the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are located in the same horizontal plane, and an included angle is formed between the chute 4 and this horizontal plane.

[0082] When the dimming mechanism provided by the above preferred embodiment works, the first adjustable ball joint 1b, the second adjustable ball joint 1c, the fixed ball joint 1a and the support frame or the lamp body 3 are connected by threads. When dimming, the support frame or the lamp body 3 serves as a fixed part. When dimming in the left-right direction, rotate the first adjustable ball joint 1b. The first adjustable ball joint 1b moves back and forth relative to the support frame or the lamp body 3, driving the lighting unit 2 to rotate around the first rotating shaft I to achieve dimming in the left-right direction. At this time, the lighting unit 2 rotates left and right relative to the support frame or the lamp body 3. Since the chute 4 is integrally provided on the lighting unit 2 and the second adjustable ball joint 1c and the slider 6a are fixed relative to the support frame or the lamp body 3, the chute 4 rotates left and right relative to the slider 6a. Therefore, there is a gap between the chute 4 and the slider 6a in the left-right direction to enable relative movement between the two. At the same time, since the chute 4 and the slider 6a are in inclined surface contact fit, the chute 4 will move left and right relative to the slider 6a and also move in the up-down direction, causing the lighting unit 2 to have a slight rotation in the up-down direction. When dimming in the up-down direction, rotate the second adjustable ball joint 1c. The second adjustable ball joint 1c moves back and forth relative to the support frame or the lamp body 3, and the slider 6a moves back and forth in the upwardly inclined chute 4, causing the chute 4 to rotate around the second rotating shaft II, thereby driving the lighting unit 2 to rotate around the second rotating shaft II to achieve dimming in the up-down direction. When the second adjustable ball joint 1c moves forward, the lighting unit 2 rotates upward. When the second adjustable ball joint 1c moves backward, the lighting unit 2 rotates downward.

[0083] In another relatively preferred embodiment of the present invention, taking the first direction as the left-right direction as an example, as Figures 21 - 25As shown, the dimming mechanism includes a fixed ball head connector 1a, a first adjustable ball head connector 1b, and a second adjustable ball head connector 1c. The adjustable ball head connector 1b and the fixed ball head connector 1a are arranged at the left and right ends of the lighting unit 2, and the connection line of the ball centers of the two is a horizontal line. One end of the fixed ball head connector 1a is connected to the lighting unit 2, and the other end is connected to the support frame or the lamp body 3. One end of the first adjustable ball head connector 1b is connected to the lighting unit 2, and the other end is supported on the support frame or the lamp body 3. The first adjustable ball head connector 1b can move back and forth relative to the support frame or the lamp body 3. A chute 4 is provided on the lighting unit 2. The fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are all ball head screw assemblies 1. The ball head screw assembly 1 includes a ball head screw 11 and a ball head nut 12. A slider 6b is provided on the ball head nut 12 of the second adjustable ball head connector 1c. The slider 6b is arranged in the chute 4. The second adjustable ball head connector 1c is supported on the support frame or the lamp body 3, and it can move back and forth relative to the support frame or the lamp body 3. The ball centers of the fixed ball head connector 1a, the first adjustable ball head connector 1b, and the second adjustable ball head connector 1c are in the same horizontal plane, and an opening angle is formed between the chute 4 and this horizontal plane.

[0084] For the dimming mechanisms provided by the above two preferred embodiments, the forward and backward movement of the first adjustable ball head connector 1b drives the lighting unit 2 to rotate to achieve dimming in the left and right directions, and the forward and backward movement of the second adjustable ball head connector 1c drives the chute 4 to rotate up and down so that the lighting unit 2 rotates up and down to achieve dimming in the up and down directions. This dimming mechanism does not need to arrange the second adjustable ball head connector 1c in the up and down direction on one side of the fixed ball head connector 1a, which can reduce the size a' of the lighting unit 2 in the up and down direction and realize miniaturization of the vehicle lamp module in the up and down direction. Moreover, the second adjustable ball head connector 1c is arranged directly behind the fixed ball head connector 1a and the first adjustable ball head connector 1b, which can increase the distance L' between the ball center of the second adjustable ball head connector 1c and the second rotating shaft II, that is, the power arm of the up and down rotation of the lighting unit 2 increases. As Figure 12 shown, compared with the prior art, when the second adjustable ball head connector 1c moves the same distance, the dimming mechanism provided by the present invention will make the rotation amount of the lighting unit 2 in the up and down direction smaller, so that the dimming accuracy in the up and down direction is higher. At the same time, arranging the first adjustable ball head connector 1b on the side far from the fixed ball head connector 1a can increase the distance between the ball center of the first adjustable ball head connector 1b and the first rotating shaft I, increase the power arm of the rotation of the lighting unit 2 in the left and right directions, and thus improve the dimming accuracy in the left and right directions.

[0085] In addition, an embodiment of the present invention further provides a vehicle lamp module, which includes the dimming mechanism and the lighting unit 2 of each of the above embodiments.

[0086] In order to effectively utilize the internal space of the vehicle lamp module, the lighting unit 2 includes a heat dissipation member 21, and the sliding groove 4 is integrally or detachably provided on the heat dissipation member 21. Preferably, it is integrally connected, which can reduce the installation steps and the installation difficulty.

[0087] Moreover, an embodiment of the present invention provides a vehicle lamp, which includes the vehicle lamp module of each of the above embodiments.

[0088] An embodiment of the present invention further provides a vehicle, which includes the vehicle lamp of the above embodiment.

[0089] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including any suitable combination of each specific technical feature. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A dimming mechanism for dimming a lighting unit, characterized in that, It includes a fixed ball head connector, a first adjustable ball head connector and a second adjustable ball head connector; One end of the fixed ball head connector is connected to the lighting unit, and the other end is connected to the support frame or the lamp body; One end of the first adjustable ball head connector is connected to the lighting unit, and the other end is supported on the support frame or the lamp body. The first adjustable ball head connector can move back and forth relative to the support frame or the lamp body, so as to drive the lighting unit to rotate to achieve dimming in the first direction; The connection line between the ball centers of the fixed ball head connector and the first adjustable ball head connector extends along the first direction. The second adjustable ball head connector is arranged behind the fixed ball head connector and the first adjustable ball head connector. A chute is provided on the lighting unit. The chute is inclined with respect to the plane of the ball center of the fixed ball head connector, the ball center of the first adjustable ball head connector and the ball center of the second adjustable ball head connector. A fixing part is clamped on the ball head nut at one end of the second adjustable ball head connector, and a slider adapted to slide in the chute is provided on the fixing part. The other end is supported on the support frame or the lamp body. The second direction is the up and down direction, and gaps are provided on both the left and right sides between the slider and the chute; or the second direction is the left and right direction, and gaps are provided on both the up and down sides between the slider and the chute. The second adjustable ball head connector can move back and forth relative to the support frame or the lamp body, so as to drive the chute to rotate, and can drive the lighting unit to rotate through the rotation of the chute to achieve dimming in the second direction. When dimming, first adjust the first adjustable ball head connector to perform dimming in the first direction, and then adjust the second adjustable ball head connector to perform dimming in the second direction.

2. The dimming mechanism according to claim 1, wherein The first direction is the up and down direction, and the second direction is the left and right direction; The ball centers of the fixed ball head connector (1a), the first adjustable ball head connector (1b) and the second adjustable ball head connector (1c) are located in the same vertical plane.

3. The dimming mechanism according to claim 2, wherein An angle is formed between the chute (4) and the vertical plane.

4. The dimming mechanism according to claim 1, wherein The first direction is the left and right direction, and the second direction is the up and down direction; The ball centers of the fixed ball head connector (1a), the first adjustable ball head connector (1b) and the second adjustable ball head connector (1c) are located in the same horizontal plane.

5. The dimming mechanism according to claim 4, wherein An angle is formed between the chute (4) and the horizontal plane.

6. The dimming mechanism according to any one of claims 1-5, characterized in that, The fixed ball head connector (1a), the first adjustable ball head connector (1b) and the second adjustable ball head connector (1c) are all ball head screw assemblies (1), and the ball head screw assembly (1) includes a ball head screw (11) and a ball head nut (12).

7. The dimming mechanism according to claim 6, wherein, A slider (6b) is provided on the ball head nut (12) of the second adjustable ball head connector (1c), and the slider (6b) is clamped in the chute (4).

8. A vehicle lamp module, characterized in that, It includes a dimming mechanism according to any one of claims 1-7 and a lighting unit (2).

9. The headlight module according to claim 8, wherein, The lighting unit (2) includes a heat dissipation part (21), and the chute (4) is integrally or detachably arranged on the heat dissipation part (21).

10. A vehicle lamp, characterized in that, It includes a vehicle lamp module according to claim 8 or 9.

11. A vehicle, characterized in that, It includes a vehicle lamp according to claim 10.

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