KR101095031B1 - An adaptive front lighting apparatus - Google Patents

Abstract

An adaptive headlamp device is provided. An aspect of an adaptive headlamp device includes an optical module for irradiating light forward through at least one shield, a shield driver for driving a shield of the optical module, and a leveling driver for adjusting the optical axis of the optical module in a vertical direction And a controller for controlling the shield driver and the leveling driver, wherein the controller generates different beam patterns by interlocking the shield driver and the leveling driver.

Headlamps, adaptive headlamps, AFLS

Description

Adaptive head lighting apparatus

The present invention relates to an adaptive headlamp device, and more particularly, to an adaptive headlamp device capable of forming various beam patterns by interlocking a shield driver, a left and right driver, and a leveling driver.

In general, the vehicle is provided with an illumination function for the purpose of informing the driving state of his vehicle to other vehicles or other road users so that the object of the driving direction can be seen well at night driving. A head lamp, also known as a headlight, is a lamp that functions to shine ahead of a vehicle, and requires brightness that can identify obstacles on the road at a distance of 100 meters ahead at night. The standard of the headlamp is set differently from country to country, and in particular, the direction of irradiation of the headlamp beam is set differently depending on whether the vehicle is driven right (left driving) or left (right driving).

Conventional vehicle headlamps provide drivers with a fixed lighting pattern, regardless of varying road conditions. Therefore, the vehicle is relatively bright compared to other roads, such as high-speed driving, which requires longer viewing distance than other roads, and the glare is reduced due to the reflection of rain, snow, or wet roads, which are less dependent on the brightness of the headlamp. When driving in bad weather conditions that increase and the visibility decreases, a proper view for the driver to drive safely is not obtained.

Adaptive front lighting system (AFLS) was introduced in an attempt to improve the driver's and opponent's frontal awareness. Adaptive Headlamp System (AFLS) is a system that changes the width and length of headlights according to the driving conditions, road conditions, environmental conditions, etc. of a vehicle. For example, separate headlights may be possible in adaptive headlamp systems when cornering a turnway at low speeds. In addition, the brightness of the headlamp may be adjusted so that the driver of the vehicle approaching the opposite lane is not blinded.

An object of the present invention is to provide an adaptive headlamp apparatus capable of generating various beam patterns by interlocking a shield driver, a left and right driver, and a leveling driver.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

One aspect of the adaptive headlamp device of the present invention for achieving the above technical problem is an optical module for irradiating light forward through one or more shields; A shield driver for driving a shield of the optical module; A leveling driver for adjusting the optical axis of the optical module in a vertical direction; And a controller for controlling the shield driver and the leveling driver, wherein the controller generates different beam patterns by interlocking the shield driver and the leveling driver.

According to the exemplary embodiment of the present invention, the shield driver, the left and right drivers, and the leveling driver are interlocked by each other to efficiently generate an appropriate beam pattern.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 shows a block diagram of an adaptive headlamp device according to an embodiment of the present invention. Referring to FIG. 1, an adaptive headlamp device according to an exemplary embodiment of the present invention may include an optical module 100, a shield driver 200, a left and right driver 300, a leveling driver 400, and a fail detector 500. And a controller 500.

The optical module 100 serves to provide a predetermined beam pattern to the front by irradiating predetermined light. The optical module 100 may include components for generating a predetermined beam pattern, such as a lamp, a reflector, and a shield. According to an embodiment of the present invention, the optical module 100 may generate various beam patterns by driving a shield to be described later and adjusting an optical axis position of the optical module 100. The detailed configuration of the optical module 100 will be described later.

The shield driver 200 drives a shield of the optical module 100 to generate a predetermined beam pattern. The shield driver 200 may generate various beam patterns by rotating the shield or changing the protrusion pattern of the shield, for example. For example, various beam patterns such as C, V, E, and W classes may be formed. Beam patterns such as C, V, E, and W classes will be described later.

The left and right driver 300 serves to drive the optical axis of the optical module 100 in the left and right directions to adjust the beam irradiation direction of the optical module 100 in the left and right directions.

The leveling driver 400 drives the optical axis of the optical module 100 in the vertical direction to adjust the beam irradiation direction of the optical module 100 in the vertical direction.

Meanwhile, the shield driver 200, the left and right driver 300, and the leveling driver 400 rotate or rotate a predetermined shield or the optical module 100, thereby rotating or moving a predetermined configuration. Or a drive motor (not shown), and may include a drive gear unit (not shown) or a drive transmission unit (not shown) for transmitting the generated power source.

The fail detector 500 detects abnormalities of the shield driver 200, the left and right drivers 300, and the leveling driver 400. In this case, the term "defect" refers to a state in which a state in which an operation is not performed properly or is no longer operated due to a failure. In addition, a fail refers to a state in which beam pattern switching is not performed or beam irradiation direction switching is not performed due to one or more of the shield driver 200, the left and right driver 300, and the leveling driver 400. Fail may be referred to as a fail-mode. In this fail mode, switching the beam pattern or changing the beam irradiation direction to the minimum recommended or safe mode is called fail-safe.

The fail detector 500 detects an abnormality of the shield driver 200, the left and right drivers 300, and the leveling driver 400 and transmits the abnormality to the controller 600. The fail detector 500 may include a shield fail detector (not shown) for detecting an abnormality of the shield driver 200, a module fail detector (not shown) and a leveling driver 400 for detecting an abnormality of the left and right drivers 300. It may include a leveling fail detection unit (not shown) for detecting an abnormality of.

The controller 600 controls the shield driver 200, the left and right drivers 300, and the leveling driver 400. The controller 600 may receive a command of beam pattern switching from the outside and transmit a control signal to the shield driver 200, the left and right driver 300, and the leveling driver 400. The controller 600 may return to the predetermined reference mode by a fail-safe function in case of malfunction or abnormality of the shield driver 200, the left and right drivers 300, and the leveling driver 400.

Figure 2 shows an exploded perspective view of the adaptive headlamp device according to an embodiment of the present invention, Figure 3 shows a perspective view of the assembly of the adaptive headlamp device according to an embodiment of the present invention.

2 and 3, an adaptive headlamp device according to an embodiment of the present invention includes a lamp 70, a shield driver 200, a holder 250, a base 350, a lens 80, and a reflector. 90, the left and right driving unit 300 and the leveling driving unit 400 may be included.

The lamp 70 provides a light source of the head lamp device. The lamp 70 may be a known light source such as a high voltage emission (HID) lamp, a halogen lamp or an LED light source.

The lens 80 may collect light in one direction and irradiate it in all directions by refracting light that is emitted from the lamp 70 to the reflective surface (not shown) and spreads forward. The lens 80 may be attached to the holder 250, and the holder 250 may be combined with the reflector 90 to configure the appearance of the optical module 100.

The reflector 90 may include a reflector plate that receives the lamp 70 and surrounds the lamp circumference rearward to direct the light emitted from the lamp 70 to the front.

The base 350 serves to fix the optical module 100 to the vehicle. The base 350 accommodates a predetermined rotation shaft protrusion formed in the optical module 100 and mounts the optical module 100 to be rotated in the left and right directions.

The shield driver 200 drives the shields 210 and 220 to form a predetermined beam pattern of the light provided by the lamp 70. The shields 210 and 220 are partially irradiated by the cut-off shape of the upper part of the shield while the light directly irradiated by the lamp 70 and the light reflected or refracted by the reflective surface move forward. It is possible to form a beam pattern. Therefore, the shield may be used in various kinds, shapes, etc. according to a predetermined beam pattern. For example, the shield driven by the shield driver 200 may include a first shield 210 and a second shield 220. The first shield 210 and the second shield 220 will be described later.

The left and right driving unit 300 rotates the optical module 100 in the left and right direction, and serves to adjust the direction of the optical axis irradiated by the light source in the left and right direction. For example, when the vehicle makes a right turn, the optical module 100 may be rotated to the right by the left and right driving units 300 to irradiate the beam irradiation direction to the right rather than the moving direction of the vehicle. On the contrary, when the vehicle makes a left turn, the vehicle may be irradiated to the left side rather than the moving direction of the vehicle by the left and right driving units 300.

The leveling driver 400 rotates the base 350 in the up and down direction, and serves to adjust the direction of the optical axis up and down by the optical module.

On the other hand, the adaptive headlamp device according to an embodiment of the present invention is a control unit 600 for controlling the shield driver 200, the left and right drivers 300 and the leveling driver 400 and the shield driver 200, the left and right drivers The device 300 may further include a fail detector 500 that detects an abnormality of the 300 and the leveling driver 400.

The fail detector 500 and the controller 600 may be electrically connected to the shield driver 200, the left and right drivers 300, and the leveling driver 400, respectively, to transmit and receive a control signal or a sensor signal.

4A and 4B show an example of the first shield and the second shield arrangement in the lamp shield driving apparatus according to an embodiment of the present invention.

4A and 4B, the first shield 210 and the second shield 220 may be disposed in parallel with respect to the rotation axes 212 and 222, respectively.

The first shield 210 may include one or more shield protrusions 232 and 234 on the cylindrical outer circumferential surface 215. The pattern of the shield protrusion may vary depending on the beam pattern to be generated. The shield protrusion may be separated and positioned at an angle on the outer circumferential surface 215 of the cylinder. As shown in FIG. 4A, a part of the shield protrusion may be combined to form a shield protrusion. The first shield 210 may be operated by a shield protrusion located at the top of the vertical line about the first rotation shaft 212. For example, as shown in FIG. 4A, the second shield 220 rotates the first shield 210 in a stationary state, such that the first shield protrusion 232 is positioned on a vertical line of the first rotational axis 212, thereby providing a class C. FIG. Can form a beam pattern. Alternatively, the first shield 210 may be rotated about the first rotation shaft 212 to 'activate' the second shield protrusion 234 to operate the beam pattern of class V. FIG. In addition, the cylindrical outer circumferential surface 215 of the first shield 210 is positioned at the top so that no shield protrusions 232 and 234 of the first shield are 'activated', thereby forming a beam pattern of class H that broadly illuminates the distance. can do. Here, 'activation' means that the shield protrusions 232 and 234 attached to the outer circumferential surface 215 of the cylinder are positioned at the top of the vertical line to partially block light emitted to the front surface.

As such, when the first shield 210 is rotated based on the first rotation axis 212, a beam pattern generated depending on whether the shield protrusions 232 and 234 attached to the first shield 200 are activated may vary. .

The second shield 220 biases and attaches the plate-shaped shield plate 224 to one side of the second rotation shaft 222. The second shield 220 is usually fixed in a state where the shield plate 224 is not vertically lowered. For example, if the shield plate 224 of the second shield 220 is fixed to face horizontally as shown in FIG. 4A, the light provided by the lamp 70 is reflected by the reflecting plate and directed forward. At this time, the shield plate 224 which is horizontal does not interfere with the light directed forward, so that the light directed forward is irradiated to the road surface. The second shield 220 may not be operated or 'disabled' of the shield plate 224 when the shield plate 224 is stopped at a horizontal level or higher so as not to block a part of the light that is forwarded.

Referring to FIG. 4B, in a state where the first shield 210 is stopped, the second shield 220 may be rotated onto the second rotation shaft 222 to activate the shield plate 224.

For example, when the road surface, such as rain, gets wet, and the glare may be severely generated by the headlamp, the second shield 220 is rotated to reduce the amount of light in the near area. Can be lowered vertically. In this case, the light reflected by the reflecting plate and directed toward the front may be partially blocked by the shield plate 224 of the second shield 220 to generate shadows in the near light region among the light regions facing forward.

5A to 5E are diagrams illustrating examples of implementing various beam irradiation patterns.

5A shows class C. Class C is a beam pattern 30 that is suitable when the vehicle 20 is driving on a country road or when there is no special situation and no need to apply a different mode beam pattern. Compared with a general low-beam, the pattern improves the amount of light while securing a view of the opposite lane.

5B shows class V. Class V is a beam pattern 24 suitable when the vehicle 20 is driven in an environment where the brightness of the surrounding light is secured, such as a city area. For example, the speed of the vehicle is 60 km / h or less when the city area is driven. This is the case where the luminance of the road surface is 1 cd / m ² or more. In particular, the left / right field of view is wider than that of class C 30, and a field of view that is somewhat shorter than the class C 30 (about 50 to 60 m in front) is secured. However, in order to widen the left / right field of view, it is common to tilt the irradiation direction of the left / right headlamps somewhat outward.

5C shows class E. Class E is a beam pattern suitable when the vehicle 20 is traveling on a highway or on a road where a substantial straight section is maintained. Thus, class E 25 has a somewhat longer forward far field than class C 30.

5D shows class W. Class W is a beam pattern 26 suitable when the vehicle 20 is driving in rainy weather, or on wet roads. Thus, the forward far field is somewhat similar to class E 25, but is characterized by reducing the amount of light, in order to reduce the reflective glare up to about 10-20 m in front. Class W has a beam pattern 26 in which there is a region 27 in which light in the near region is removed in class E 25.

5E shows Class H. FIG. Class H is a beam pattern 21, called a high-beam, which illuminates a long distance, and is a beam pattern suitable for a high-speed environment without other vehicles in front.

As shown in Figs. 5A to 5E, the actual vehicle 20 needs to change the beam pattern variably according to various driving environments.

Figure 6 shows an exploded perspective view of the shield drive in the adaptive headlamp assembly according to an embodiment of the present invention. FIG. 7 is a diagram schematically illustrating a structure of a gear unit of FIG. 6.

6 and 7, the shield driving unit 200 of the adaptive headlamp device according to the embodiment of the present invention includes an upper case 415, a lower case 417, a step motor 480, and a printed circuit board. (PCB; 470), step gear 485, first gear 420, second gear 425, first sub gear 430, second sub gear 435, first spring 460, first And may include two springs 465 and a magnet 490.

The upper case 415 and the lower case 417 serve as a housing for receiving the components of the shield driver 200. Accordingly, the upper case 415 and the lower case 417 may be collectively referred to as a shield housing (not shown). The upper case 415 and the lower case 417 may be assembled by a predetermined fastening means, for example, bolts 406, 407, 408, 409, and the like.

The step motor 480 provides a driving force for driving the first gear 420 and the second gear 425 through the step gear 485. The step motor 480 may receive the predetermined control signal from the controller 600 to rotate the step gear 485 in a predetermined direction to rotate the first gear 420 and the second gear 425.

The first gear 420, the second gear 425, the first sub gear 430, the second sub gear 435, the first spring 460, and the second spring 465 may have a predetermined gear portion (not shown). Can be configured. The first gear 420 and the second gear 425 are positioned between the step gear 485 to rotate in engagement with the rotation of the step gear 485. For example, when the step gear 485 rotates in the clockwise direction, the first gear 420 and the second gear 425 rotate in the counterclockwise direction.

The first gear 420 includes a first protrusion 440 meshed with the first sub gear 430 to rotate, and the second gear 425 meshes with the second sub gear 435 to rotate. 445).

The first sub gear 430 and the second sub gear 435 may be coupled to and coupled to the first gear 420 and the second gear 425, respectively. The first sub gear 430 and the second sub gear 435 share the same rotation axis as the first gear 420 and the second gear 425, respectively. The first sub gear 430 and the second sub gear 435 may be integrally formed or fixed to the first shield 210 and the second shield 220, respectively. Accordingly, the first shield 210 rotates according to the rotation of the first sub gear 430, and the second shield 220 rotates according to the rotation of the second sub gear 435.

As shown in FIG. 10, the first sub-gear 430 has a predetermined 'first hut without an engagement portion even when the first protrusion 440 is rotated by a predetermined angle on the outer surface of the first sub-gear 430. The stone may include a section 450 '. As another example, the first sub gear 430 is located in a space formed by a predetermined groove in the center of the first gear 420, the first sub gear 430 is a fan of a predetermined angle in a predetermined disc It may also be formed by cutting the shape of.

The second sub gear 435 has a predetermined 'second idler section 455' having no engagement portion even when the second protrusion 445 is rotated by a predetermined angle on the outer surface of the second sub gear 435. It may include. The second sub gear 435 may also be formed in a shape obtained by cutting out a fan shape of a predetermined angle from a predetermined disc.

The first spring 460 and the second spring 465 serve to return the first shield 210 and the second shield 220 to the reference position, respectively. For example, when the power is applied to the stepper motor 480, or when it is determined that the power is applied to the adaptive headlamp device or is determined to fail, the elastic force is provided to provide the first force. The shield 210 and the second shield 220 may be returned to the class C beam pattern mode which is a reference position. The first spring 460 and the second spring 465 may be mounted to the first sub gear 430 and the second sub gear 435, respectively.

The magnet 490 may be located on the side plate of the first sub gear 430. The magnet 490 may be attached to the side surface of the first sub gear 430 to rotate according to the rotation of the first sub gear 430. The rotation amount of the magnet 490 may be sensed by a sensing sensor such as a hall sensor (not shown) to determine whether there is an abnormality of the first shield 210. . In addition, the magnet 490 may be mounted on the side of the second sub gear 435 to detect an abnormality of the second shield 220 by detecting the rotation amount of the second sub gear 435.

The printed circuit board (PCB) 470 serves to generate and transmit a predetermined control signal. The printed circuit board 470 may include a detection sensor such as a hall sensor (not shown). Also, a printed circuit board (PCB) mounts a plurality of driving components, which may be composed of semiconductor chips designed by one chip technology.

7, 8a and 8b, the operation of the shield driving unit 200 in the adaptive headlamp device according to an embodiment of the present invention will be described.

Referring to FIG. 7, in the reference mode having the beam pattern of class C, the step gear 485 is stopped while the teeth of the first gear 420 and the second gear 425 are connected to each other. In this state, the step gear 485 can rotate clockwise or counterclockwise as the step motor 480 rotates clockwise or counterclockwise. Here, the 'reference mode' is a beam pattern mode that is automatically formed when the power is applied to the adaptive headlamp device or when the power is turned off. The rotation positions of the shields 210 and 220 and the optical module 100 In this mode, the optical axis position returns to a predetermined reference position or is moved to the reference position.

 For example, when the reference mode is the beam pattern generation mode of class C, the rotational position on the axis of the first shield 210 and the second shield 220 and the direction of the optical axis of the optical module 100 are moved to a predetermined position. Can be set to generate a beam pattern of class C.

On the other hand, the first sub gear 430 is integrally attached to the first shield 210, the second sub gear 435 is integrally attached to the second shield 220, the first sub gear 430 and As the second sub gear 435 rotates, the first shield 210 and the second shield 220 may rotate, respectively.

Referring to FIG. 8A, the step gear 485 rotates clockwise. When the step gear 485 rotates clockwise, the first gear 420 rotates counterclockwise, and the second gear 425 also rotates counterclockwise. At this time, the first gear 420 may rotate the first sub gear 430 by engaging the first protrusion 440 of the first gear 420 with the first sub gear 430 by counterclockwise rotation. have. However, the second gear 425 rotates in a counterclockwise direction so that the second protrusion 445 of the second gear 425 does not mesh with the second sub gear 435, and the " The second sub-gear 435 is not rotated by moving over the two idler section 455 ".

Therefore, by the clockwise rotation of the step gear 485, the class V which rotates the first shield 210 coupled to the first sub gear 430 to activate the shield protrusion attached to the first shield 210. Alternatively, a beam pattern of class H may be created with the cylindrical outer peripheral surface 215 of the shield positioned on top. Here, the cylindrical outer circumferential surface of the shield is used without a separate shield protrusion for class H. However, like class C and V, the shield protrusion for class H can be placed on the cylindrical outer circumferential surface of the shield to generate a beam pattern of class H. Of course.

8B, the step gear 485 rotates in the counterclockwise direction. When the step gear 485 rotates counterclockwise, the first gear 420 rotates clockwise, and the second gear 425 also rotates clockwise. In this case, the second gear 425 may rotate the second sub gear 435 by engaging the second protrusion 445 of the second gear 425 with the second sub gear 435 by clockwise rotation. . However, the first gear 420 rotates in the clockwise direction so that the first protrusion 440 of the first gear 420 does not mesh with the first sub gear 430, and the " first " The first sub-gear 430 is not rotated by moving over the idle section 450 ".

Accordingly, the counterclockwise rotation of the step gear 485 rotates the second shield 220 coupled to the second sub gear 435 to activate the shield plate attached to the second shield 220. Near-field shading may be generated in the beam pattern of class W

As described above, in one embodiment of the present invention, the clockwise or counterclockwise direction of the step gear 485 between the first gear 420 and the second gear 425 in the initial reference mode in the shield drive unit 200. The first shield 210 or the second shield 220 may be driven in accordance with the rotation thereof to efficiently generate a predetermined beam pattern.

9 is a diagram illustrating a combination of generating various beam irradiation patterns according to an embodiment of the present invention.

9, in the adaptive headlamp apparatus according to the embodiment of the present invention, various beam patterns may be generated by a combination of the shield driver and the leveling driver.

First, the adaptive headlamp device may have a class C beam pattern in a reference mode. The reference mode refers to an initial operating mode of the adaptive headlamp device or a mode in which the power is placed in an off state or returned by a fail-safe function.

Subsequently, when the beam patterns are to be generated, the classes V and H may be generated by rotating the first shield 210 by the shield driver 200. Accordingly, in order to implement a beam pattern of class V or H in the beam pattern of class C, the first shield 210 is rotated by a predetermined angle, so that the beam patterns of class V and H depend on the pattern of the shield protrusion or the presence or absence of the protrusion. Can be implemented.

In addition, when generating a beam pattern of class E from a class C beam pattern, the irradiation direction of the optical module 100 may be directed upward by the leveling driver 400. Accordingly, it is possible to generate a beam pattern of class E, which is a beam pattern irradiated at a relatively long distance relative to the beam pattern of class C.

The class W beam pattern is a beam pattern in which light in the near area is partially removed from the beam pattern of class E. Accordingly, the class W beam pattern is configured to operate the second shield 220 by the shield driver 200 to generate light toward the near field by the shield plate 224 after or simultaneously with generating the beam pattern of class E. By some sweets. More specifically, first, the optical axis direction of the optical module 100 is moved upward by the leveling driver 400 in the class C beam pattern, and the second shield 220 is operated by the shield driver 200. A beam pattern of class W may be generated.

As described above, according to the exemplary embodiment of the present invention, various beam patterns in the adaptive headlamp system may be generated by interlocking the shield driver 200 and the leveling driver 400. Accordingly, two shield protrusions may be formed on the first shield 210 to implement all the beam patterns of classes C, V, E, W, and H by interlocking with the second shield 220 and the leveling driver 400. Therefore, the number of shield protrusions can be reduced as compared with the case where all shield protrusions for each beam pattern are provided on the first shield 210. In addition, the manufacturing cost of the shield may be reduced by reducing the number of shield protrusions of the first shield 210.

FIG. 10 shows an example in which the optical axis of the optical module 100 is moved to the right by the left and right driving units 300 in one embodiment of the present invention, and FIG. 11 is provided in the leveling driving unit 400 in an embodiment of the present invention. Shows an example in which the optical axis of the optical module 100 is raised.

Referring to FIG. 10, the irradiation direction of the beam made by the optical module 100 may be shifted from the front to the right by the left and right driving units 300. Therefore, it is possible to reduce the glare of the other driver running facing the left side. In addition, in a road environment facing from the right, the beam irradiation direction may be biased from the front to the left by the left and right driving units 300.

Meanwhile, referring to FIG. 11, the base 350 may be rotated in the vertical direction by the leveling driver 400 so that the beam irradiation direction by the optical module 100 may be directed from the front to the upward direction. Therefore, light can be irradiated to a long distance by relatively raising the irradiation direction of the beam.

As described above, the direction of the beam irradiated from the optical module 100 may be adjusted by the left and right driving unit 300 and the leveling driving unit 400. In an exemplary embodiment of the present invention, the optical axis of the optical module 100 may be adjusted by the left and right driving unit 300 or the leveling driving unit 400 to perform a predetermined beam pattern conversion. Accordingly, in the adaptive headlamp system, the optical axis of the optical module 100 is adjusted by the driving and leveling driver 400 of the first shield 210 and / or the second shield 220 of the shield driver 200. Various beam patterns can be generated.

12 illustrates, according to a predetermined mode, forming a beam pattern in an adaptive headlamp system according to an embodiment of the present invention.

Referring to FIG. 12, the 'reference mode' is a mode for generating a beam pattern of class C. The first shield protrusion 232 of the first shield 210 is activated, and the shield plate 224 of the second shield 220 is activated. ) Is disabled.

The 'leveling mode' refers to a mode in which the optical axis of the optical module 100 is raised by the leveling driver 400. In the leveling mode, the class E beam pattern may be generated by raising the optical axis from the class C beam pattern by driving by the leveling driver 400 in the reference mode stage.

In addition, when generating a beam pattern of class W, the shield plate 224 is activated by driving by the leveling driver 400 and driving of the second shield 220 of the shield driver 200 to block light toward the near distance. This allows the generation of class W beam patterns. For example, the shield driver 200 drives the step motor 480 to rotate the step gear 485 in a counterclockwise direction so that the shield driver 200 first rotates on the first idler section 450 of the first sub gear 430. While the first protrusion 440 of the gear 420 is not rotated to rotate the first sub gear 430, the second sub gear 435 is rotated clockwise to drive only the second shield 220. The shield plate 224 may be activated.

'Shield mode' refers to a mode in which the shield driver 200 drives the first shield 210. In the shield mode, the shield protrusion 234 other than the shield protrusion 232 of the reference mode of the first shield 210 may be activated or the shield protrusions 232 and 234 may be deactivated to generate another beam pattern in the reference mode stage. Can be. For example, the shield driving unit 200 drives the step motor 480 to rotate the step gear 485 in the clockwise direction so that the second gear is on the second idle section 455 of the second sub gear 435. While the second protrusion 445 of 425 is rotated counterclockwise to not rotate the second sub gear 435, the first sub gear 435 is rotated counterclockwise so that the first shield 210 is rotated. Only the second shield protrusion 234 may be activated by driving only the second shield protrusion 234. The activation of the second shield protrusion 234 may generate a class V beam pattern.

As described above, according to an embodiment of the present invention, the beam driver 200 and the leveling driver 400 may be combined with each other without generating various beam patterns of the adaptive headlamp system based on the shield driver 200. Can be generated. Accordingly, the number of shield protrusions of the first shield 210 may be reduced to simplify the structure of the first shield 210 and to reduce the manufacturing cost of the first shield 210. In addition, since the rotation amount of the first shield 210 can be relatively reduced compared to the case of generating the beam pattern depending on the shield driver 200, the driving force can be reduced because the elastic force applied to the spring for the fail-safe function can be reduced. It is possible to reduce the load of the provided step motor 480.

13 is a diagram illustrating a combination of generating various beam irradiation patterns according to another embodiment of the present invention. Referring to FIG. 13, in another embodiment of the present invention, a mode of generating a beam pattern of class E may be designated as a 'reference mode'.

In this case, in order to generate class C, V, and H beam patterns, the first shield 210 is controlled by the optical axis control and shield driver 200 which lowers the optical axis of the optical module 100 by the leveling driver 400. It can be rotated to activate the appropriate shield protrusion.

In addition, in order to generate a class W beam pattern, the shield driver 200 rotates the second shield 220 by the shield driver 200 in the reference mode to activate the shield plate 224 to partially block light irradiated at a short distance to class E. It can be generated by switching from the beam pattern of the class W beam pattern.

As described above, in the adaptive headlamp system according to another embodiment of the present invention, various beam patterns may be generated by the combination of the shield driver and the leveling driver.

Meanwhile, although an embodiment of the present invention mainly refers to the interlocking between the shield driver 200 and the leveling driver 400, the optical axis irradiated from the optical module 100 by the left and right driver 300 is moved left and right. It is also possible to adjust the direction of the beam pattern to be irradiated.

FIG. 14 schematically shows a configuration for detecting a fail mode in a shield driver in an adaptive headlamp device according to an embodiment of the present invention.

Referring to FIG. 8, the Hall sensor 472 for detecting the position of the magnet 490 may be attached to a predetermined position on the printed circuit board 470 of the shield driver 200. For example, the magnet 490 may be attached to the first sub gear 430 to be a position representing a beam pattern of a class C, which is a predetermined reference mode. Accordingly, the first sub gear 430 rotates in a counterclockwise direction so that the beam patterns of class V and H are rotated by the first sub gear 430 or the amount of rotation of the first shield 210 that is integrally coupled. Can be generated according to

On the other hand, for example, the Hall sensor 472 sensing the position of the magnet 490 can be placed at the position of the magnet in the beam pattern representing class V.

For example, the power supply may not be applied to the stepper motor 480 or a problem may occur in the MCU unit, such that a control unit (not shown) does not operate. In an embodiment of the present invention, when the first spring 460 is mounted on the first sub gear 430, an abnormality occurs in the shield driving unit 200, and thus the power is not applied. Can return to class C reference mode.

However, when the first spring 460 also fails in the fail mode, the first shield 210 may not rotate. For example, when the permanent deformation occurs in the first spring 460, the restoring force due to the elastic force is weakened, so that the normal beam pattern conversion operation may not be performed, or may not return to the class C reference mode.

In one embodiment of the present invention, by attaching the Hall sensor 472 to the returning intermediate point of the first shield 210, the movement of the first shield 210 is detected or a reference of Class C of the first shield 210 is performed. The movement to the location can be detected. If there is no movement of the magnet 490 attached to the first sub-gear 430 in the hall sensor 472, it may be sensed that the normal function of the spring is not performed. The indication may indicate a failure of the shield driver 200.

As described above, in one embodiment of the present invention, the magnet 490 is attached to the first sub gear 430 integrally attached to the first shield 210, and the movement of the magnet 490 is performed by the hall sensor 472. The failure of the shield driving unit 200 can be detected by the detection by the control panel 200.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations, modifications, and modifications without departing from the spirit or essential features of the present invention. It is to be understood that modifications may be made and other embodiments may be embodied. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is a block diagram of an adaptive headlamp device according to an embodiment of the present invention.

2 is an exploded perspective view of an adaptive headlamp device according to an embodiment of the present invention.

3 is a perspective view of an adaptive headlamp device assembled according to an embodiment of the present invention.

4A and 4B are diagrams illustrating an example of a first shield and a second shield arrangement in the lamp shield driving apparatus according to an embodiment of the present invention.

5A to 5E are diagrams illustrating examples of implementing various beam irradiation patterns.

6 is an exploded perspective view of the shield driving unit in the adaptive headlamp assembly according to the embodiment of the present invention.

FIG. 7 is a diagram schematically illustrating a structure of a gear unit of FIG. 6.

8A and 8B are views schematically showing the operation of the gear unit of FIG. 7.

9 is a diagram illustrating a combination of generating various beam irradiation patterns according to an embodiment of the present invention.

10 is a view showing an example in which the optical axis of the optical module is moved to the right by the left and right driving unit 300 in one embodiment of the present invention.

FIG. 11 is a diagram illustrating an example in which the optical axis of the optical module is moved upward by the leveling driver 400 according to one embodiment of the present invention.

12 is a diagram illustrating forming a beam pattern in a predetermined mode in an adaptive headlamp system according to an embodiment of the present invention.

13 is a diagram illustrating a combination of generating various beam irradiation patterns according to another embodiment of the present invention.

* Description of the main parts of the drawings *

100: optical module 200: shield drive unit

300: left and right driving unit 400: leveling driving unit

500: fail detection unit 600: control unit

70: lamp 80: lens

90: reflector

210: first shield 220: second shield

260: rotation axis projection 350: base

232, 234, 236: shield protrusion

420: first gear 425: second gear

430: first sub gear 435: second sub gear

440: first projection 445: second projection

450: first barn section 455: second barn section

480: step motor 485: step gear

490: magnet

Claims (16)

An optical module for irradiating light forward through at least one shield; A shield driver for driving a shield of the optical module; A leveling driver for adjusting the optical axis of the optical module in a vertical direction; And A control unit for controlling the shield driver and the leveling driver; The control unit generates a plurality of beam patterns by interlocking the shield driver and the leveling driver, The control unit transmits a control signal to the shield driving unit and the leveling driving unit to generate a specific beam pattern from the reference mode, wherein the reference mode is a rotational position of the shield and an optical axis position of the optical module are designated as the reference position. And a mode in which the optical module is moved to the reference position to produce a first beam pattern. delete The method of claim 1, And the first beam pattern is a class C beam pattern or a class E beam pattern. An optical module for irradiating light forward through at least one shield; A shield driver for driving a shield of the optical module; A leveling driver for adjusting the optical axis of the optical module in a vertical direction; And A control unit for controlling the shield driver and the leveling driver; The control unit generates a plurality of beam patterns by interlocking the shield driver and the leveling driver, And the control unit causes the shield driver to activate the first shield projection of the first shield, and the leveling driver to generate the second beam pattern by raising or lowering the optical axis of the optical module, respectively. The method of claim 4, wherein And the second beam pattern is a class C beam or a class E beam pattern. The method of claim 4, wherein the control unit And the shield driver generates a third beam pattern by operating the second shield while the second beam pattern is generated. The method of claim 6, And the third beam pattern is a class W beam pattern. An optical module for irradiating light forward through at least one shield; A shield driver for driving a shield of the optical module; A leveling driver for adjusting the optical axis of the optical module in a vertical direction; And A control unit for controlling the shield driver and the leveling driver; The control unit generates a plurality of beam patterns by interlocking the shield driver and the leveling driver, The control unit is a cylindrical outer circumferential surface of the class V or shield which causes the leveling driver to lower the optical axis of the optical module in the reference mode, which is a class E beam pattern, and the shield driver to drive the first shield to activate the second shield protrusion. An adaptive headlamp device, generating a beam pattern of class H with the topmost position. The method according to any one of claims 1, 4, 8, And a left and right driver for adjusting the optical axis of the optical module from side to side. The method of claim 1, wherein the shield drive unit A first gear and a second gear that rotate in conjunction with a step gear connected to the drive means; A first sub-gear which shares the same axis of rotation as the first gear and drives the first shield by rotating in engagement with rotation of the first gear; And And a second sub-gear which shares the same axis of rotation as the second gear and drives the second shield by engaging with the rotation of the second gear. The method of claim 10, When the step gear rotates clockwise in the reference mode, The first gear rotates in a counterclockwise direction such that a first protrusion of the first gear meshes with the first sub gear to drive the first shield, The second gear is rotated counterclockwise, so that the second projection of the second gear is moved to the second idler section of the second sub-gear to not drive the second shield. . The method of claim 10, When the step gear rotates counterclockwise in the reference mode, The second gear rotates in a clockwise direction such that a second protrusion of the second gear meshes with the second sub gear to drive the second shield; And the first gear rotates in a clockwise direction so that the first projection of the first gear does not move the first idler section of the first sub gear to drive the first shield. The method of claim 10, wherein the shield driving unit If the shield drive unit malfunctions, A first spring for returning the first shield to a first reference position; And And a second spring for returning the second shield to a second reference position. The method of claim 10, wherein the shield driving unit And a magnet informing the rotational position of the first shield or the second shield to the first sub gear or the second sub gear. The method of claim 14, wherein the shield driving unit Further comprising a printed circuit board having a Hall sensor for detecting the position of the magnet, Adaptive headlamp device for detecting the malfunction of the first shield or the second shield by the Hall sensor. The method according to any one of claims 1, 4 and 8, In a fail mode in which an error occurs in the operation of the shield driving unit, the sensor further comprises a Hall sensor for detecting whether the shield returns to the reference position by detecting a movement of the magnet rotating according to the rotation of the shield. Lamp unit.

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