KR20120011213A - Head lamp for vehicle - Google Patents

Abstract

PURPOSE: A head lamp for vehicles is provided to be commonly utilized for a left hand drive type vehicle and a right hand drive type vehicle. CONSTITUTION: The arrangement of a shield protrusion of a first shield of a left side head lamp assembly and a right side head lamp assembly is different. The first shield comprises one and more shield protrusions which partly seclude light which is irradiated from a lamp and forms a plurality of beam patterns. A second shield secludes beam irradiation of a short distance area. A shield driving part successively rotates the first shield and the second shield and forms various beam patterns. A first head assembly is formed in one side of the front side of a vehicle. A second head assembly is formed in the other side of the front side of the vehicle.

Description

Head lamp for vehicle {Head lamp for vehicle}

The present invention relates to a headlamp for a vehicle, and more particularly, to an adaptive headlamp that can be used in both a left driving (LHD) type vehicle and a right driving (RHD) type vehicle.

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 according to whether it is the left driving (LHD) or the right driving (RHD).

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.

In order to form various beam patterns as described above, a method of using a rotating shield in which a plurality of shield protrusions for blocking a part of the light emitted from the light source are formed is used.

Although the driving direction of the vehicle is not the same according to the left driving or the right driving in each country, conventionally, there is a problem in that a shield for the country must be manufactured separately to manufacture the head lamp for the LHD and the head lamp for the RHD, respectively.

The problem to be solved by the present invention is to provide a headlamp for a vehicle that can be used for both the left driving type and the right driving type using a single rotary shield.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Vehicle head lamp according to an embodiment of the present invention for solving the above problems is a lamp for irradiating light; A first shield having one or more shield protrusions for blocking a part of light irradiated from the lamp on an outer circumferential surface and forming a plurality of beam patterns; A second shield for blocking beam irradiation in the near area; And a shield driving part configured to operate the first shield and the second shield to form a predetermined beam pattern, the first head lamp assembly formed on one side of the front of the vehicle and the second head lamp formed on the other side of the front of the vehicle. assembly; And a shield controller for controlling the shield driving portions of the first head lamp assembly and the second head lamp assembly, respectively, wherein the arrangement of the shield protrusions of the first shield of the first head lamp assembly and the second head lamp assembly It is different.

Other specific details of the invention are included in the detailed description and drawings.

According to the vehicular headlamp of the present invention as described above, there is an advantage that it can be used as the LHD type and the RHD type as a single lamp without separately manufacturing the LHD type vehicle headlamp and the RHD type vehicle headlamp.

1 is a schematic view showing the configuration of a headlamp 10 of the projection type.
2 is an exploded perspective view of the adaptive headlamp assembly in accordance with one embodiment of the present invention.
3 shows a perspective view of an adaptive headlamp assembly in accordance with one embodiment of the present invention.
4 shows an arrangement of the first shield and the second shield according to an embodiment of the present invention.
5A through 5F are diagrams illustrating examples of implementing various beam irradiation patterns.
6A through 6F illustrate operations of the first shield and the second shield corresponding to the beam patterns of FIGS. 5A through 5F, respectively.
FIG. 7A is a perspective view illustrating a shield driving unit according to an exemplary embodiment of the present invention, and FIG. 7B illustrates an exploded perspective view of FIG. 7A.
8A to 8F illustrate an operation according to the beam pattern of the shield driver of FIG. 7.
FIG. 9 illustrates a first shield of a left head lamp assembly and a first shield of a right head lamp assembly of a vehicle head lamp according to an exemplary embodiment of the present invention.
10A to 10E are diagrams illustrating positions of shield protrusions according to various beam patterns in an LHD headlamp using first shields of the left and right headlamps of FIG. 9.
11A to 11E illustrate positions of shield protrusions according to various beam patterns in an RHD headlamp using first shields of the left and right headlamps of FIG. 9.

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 will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Embodiments described herein will be described with reference to plan and cross-sectional views, which are ideal schematic diagrams of the invention. Accordingly, shapes of the exemplary views may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include variations in forms generated by the manufacturing process. Thus, the regions illustrated in the figures have schematic attributes, and the shape of the regions illustrated in the figures is intended to illustrate a particular form of region of the device, and is not intended to limit the scope of the invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. In addition, the terms defined in the commonly used dictionaries are not ideally or excessively interpreted unless they are specifically defined clearly.

1 is a schematic view showing the configuration of a headlamp 10 of the projection type. Such a projection type headlamp collects light in one place, which is advantageous in terms of light distribution than a general clear type, and gives a sporty aesthetic to the front shape of a vehicle.

The light emitted from the light emitting lamp 11 is reflected on the reflective surface 12 of a predetermined shape (for example, elliptical) and concentrated at one point 16 in the omnidirectional direction of the light emitting lamp 11. The concentrated light is refracted by the refraction lens 15 provided at the front and irradiated substantially in all directions. However, the light emitted upward in the light emitted from the light emitting lamp 11 is reflected on the reflective surface 12 and proceeds downward, and the light emitted downward is reflected on the reflective surface 13 and upward. Proceed to By the way, except that a high beam pattern is formed, the light emitted downward and traveling upward is blocked by the shield 14 so as not to inconvenience other drivers. .

As described above, the projection type headlamp 10 is different from the clear type headlamp, and since the light reflected from the reflecting surface 12 is substantially concentrated at one point 16, the shield 14 near one point 16 is used. Even if the shape of) is slightly different, various beam irradiation patterns can be formed.

Figure 2 shows an exploded perspective view of the adaptive head lamp assembly according to an embodiment of the present invention, Figure 3 shows a perspective view of the adaptive head lamp assembly according to an embodiment of the present invention. However, in FIG. 3, the lens 80 positioned in the front portion of the head lamp is omitted.

2 and 3, the adaptive headlamp assembly according to the embodiment of the present invention includes a lamp 70, a first shield 200, a second shield 300, a shield driver 400, and a lens ( 80 and the housing 90.

The lamp 70 serves as a light source for illuminating the front of the vehicle, and a known lamp such as a high voltage emission (HID) lamp, a halogen lamp or an LED lamp may be used as the light source.

The shield driver 400 is a device for driving the shields 200 and 300 to form a predetermined beam pattern of light provided by the lamp 70. According to an embodiment of the present invention, the shield driven by the shield driver 400 is a first shield 200 and a second shield 300, and the first shield 200 and the second shield are shielded. 300 will be described later.

The lens 80 collects the light in one direction and irradiates it in all directions by refracting the light radiated from the lamp 70 to the reflective surface (not shown) and spreading forward. The lens 80 may be attached to the lens holder 85, and the lens holder 85 may be assembled with the housing 90 to configure the appearance of the head lamp assembly.

The housing 90 is the body of the adaptive headlamp assembly, in which the lamp 70, the shields 200 and 300, the shield driver 400 and the lens 80 are assembled into the housing 90, thereby adapting the adaptive headlamp. The assembly is complete. The housing 90 may include a reflecting surface 92 that surrounds the lamp circumference rearward to direct the light supplied by the lamp to the front. The housing 90 may further include a rotation support part 95 supporting the rotation shaft such that the first shield 200 and the second shield 300 rotate about the rotation shaft.

4 shows an arrangement of the first shield and the second shield according to an embodiment of the present invention.

Referring to FIG. 4, the first shield 200 and the second shield 300 may be disposed in parallel with respect to the rotation shafts 210 and 310, respectively. The shield driver 400 according to an embodiment of the present invention may sequentially operate the first shield 200 and the second shield 300 to form a predetermined beam pattern.

The first shield 200 may include one or more shield protrusions 230, 232, 234, and 236 on the cylindrical outer circumferential surface 220. The shape 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 of the cylinder. As shown in FIG. 4, the shield protrusion may be separated by forming a shield protrusion. The first shield 200 may be operated by a shield protrusion located at the top of the vertical line about the rotation shaft 210. For example, as shown in FIG. 4, the third shield protrusion 234 may be positioned on a vertical line of the rotation axis to form a beam pattern of class V. Referring to FIG. Alternatively, by rotating the first shield 200 about the rotation axis 210, the first shield protrusion 230, the second shield protrusion 232, or the fourth shield protrusion 236 may be 'activated' so as to first activate the first shield 200. ) Can work. Here, 'activation' means that the shield protrusion attached to the outer circumferential surface 220 of the cylinder is located at the top of the vertical line to partially block light emitted to the front.

As such, when the first shield 200 is rotated based on the rotation shaft 210, the beam patterns generated while the shield protrusions 230, 232, 234, and 236 attached to the first shield 200 are activated may vary. The beam pattern will be described later.

However, the first shield 200 shown in FIG. 4 is only one example, and the shape, number, arrangement, and spacing of the shield protrusions on the cylindrical outer circumferential surface 220 may be variously modified.

The second shield 300 biases and attaches the plate-shaped shield plate 320 to one side about the rotation shaft 310. The second shield 300 is usually fixed in a state in which the shield plate 320 is not vertically lowered. For example, as shown in FIG. 4, if the shield plate 320 of the second shield 300 is fixed to face horizontally, the light provided by the lamp 70 is applied to the reflective surface 92 of the housing 90. Reflected and directed forward. At this time, the shield plate 320 which is horizontal does not interfere with the light directed forward, and the light directed forward is irradiated to the road surface. The fact that the shield plate 320 stops at a level above or above the level such that the shield plate 320 does not block a portion of the light that is directed forward is referred to as not operating the second shield 300.

However, when the road surface, such as rain, is wet and the glare may be severely generated by the headlamp, the second shield 300 is rotated vertically to reduce the amount of light in the near area. You can get off. In this case, a part of the light reflected by the reflective surface and directed toward the front may be blocked by the shield plate 320 of the second shield 300 to lower the brightness of the light directed toward the near distance.

5A through 5F are diagrams illustrating examples of implementing various beam irradiation patterns.

5A 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 an environment that travels at high speed without other vehicles in front.

5B shows class RHD C. Class RHD C is the beam pattern 22 used in the right driving environment. Accordingly, the class RHD C has a beam pattern 22 symmetrically up and down the beam pattern 30 of the class LHD C of FIG. 5C.

5C shows class LHD C. Class LHD C is the beam pattern 30 used in the left driving environment.

Class C is a beam pattern 22, 30 that is suitable when the vehicle 20 is traveling 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.

5D 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 (22, 30), and the field of view at a distance slightly shorter than the class C (22, 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.

5E 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.

5F 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.

As shown in Figs. 5A to 5F, the actual vehicle 20 needs to change the beam pattern variably according to various driving environments. By varying the shield, a variable beam pattern may be generated. For example, the first shield 200 and the second shield 300 shown in FIG. 4 may be driven in conjunction with the shield or driven independently. A beam pattern can be generated.

6A through 6F illustrate operations of the first shield and the second shield corresponding to the beam patterns of FIGS. 5A through 5F, respectively.

FIG. 6A is an arrangement of a first shield 200 and a second shield 300 forming a beam pattern of class H. FIG. The beam pattern of the class H is a beam pattern that generates a general high-beam, and no shield protrusions 230, 232, 234, and 236 of the first shield 200 are 'activated' and the second shield ( 300 is also a state in which the shield plate 320 is not operated toward the horizontal. Therefore, the light traveling forward through the reflector may form a beam pattern of class H that broadly illuminates the distance without being blocked by the first shield 200 and the second shield 300.

FIG. 6B is a layout of the first and second shields forming a beam pattern of class RHD C. FIG. The beam pattern of the class RHD C may be generated by 'activating' the first shield protrusion 230 of the first shield 200. 'Activating' the first shield protrusion 230 of the first shield 200 rotates the first shield 200 counterclockwise in an arrangement of the first shield 200 forming a beam pattern of class H. The first shield protrusion 230 may be vertically erected. At this time, the second shield 300 is fixed and does not operate. Accordingly, the light toward the front may be partially blocked by the first shield protrusion 230 to form a beam pattern of class RHD C.

FIG. 6C is an arrangement of a first shield and a second shield forming a beam pattern of class LHD C. FIG. The beam pattern of the class LHD C may be generated by 'activating' the second shield protrusion 232 of the first shield 200. Activating the second shield protrusion 232 of the first shield 200 rotates the first shield 200 counterclockwise in the arrangement of the first shield forming the beam pattern of the class RHD C, thereby causing the second shield protrusion ( 232) can be implemented vertically. At this time, the second shield 300 is fixed and does not operate. The light irradiated to the front may be partially blocked by the second shield protrusion 232 to form a beam pattern of class C.

6D is an arrangement of a first shield and a second shield forming a beam pattern of class V. FIG. The beam pattern of the class V may be generated by 'activating' the third shield protrusion 234 of the first shield 200. Activation of the third shield protrusion 234 may also be implemented by rotating the first shield 200 counterclockwise in an arrangement of the first shield forming a class C beam pattern. At this time, the second shield 200 is fixed and does not operate. A portion of the light irradiated to the front by the third shield protrusion 234 may be blocked to form a beam pattern of class V.

6E is an arrangement of a first shield and a second shield forming a beam pattern of class E. FIG. The beam pattern of class E may be generated by 'activating' the fourth shield protrusion 236 of the first shield 200. When the beam pattern is Class E, the second shield 300 does not operate, and the fourth shield protrusion 236 of the first shield 200 is placed vertically so as to be positioned on the top of the first shield 200. 4 shield projections 236 to partially block the light irradiated to the front. Thus, a beam pattern of class E can be formed.

As described above, the second shield 300 is not operated until FIGS. 6A to 6E, the first shield 200 is rotated to activate the shield protrusions 230, 232, 234, and 236 according to the respective beam patterns. Beam patterns of RHD C, LHD C, V and E can be formed. The angle of rotating the first shield 200 may vary according to the arrangement of the shield protrusion attached to the first shield 200. For example, the angle of rotation of the first shield 200 in the counterclockwise direction by 45 degrees in FIGS. 6A to 6E is shown. Can be rotated.

FIG. 6F is an arrangement of the first and second shields forming a beam pattern of class W. FIG. If the beam pattern is class W, the second shield 300 is activated to block some of the light emitted by the lamp. The second shield 300 may rotate along the rotation axis 310 to block a portion of the light radiated forward by the shield plate 320 falling vertically. On the other hand, the first shield 200 maintains the same state as when forming the beam pattern of class E. Although the beam patterns of the class E and the class W are somewhat similar, in the case of the class W, the second shield 300 may be operated to reduce the reflective glare in the near area.

When forming the beam pattern of class E, the first shield 200 is operated and the second shield 300 is not operated. When forming the beam pattern of Class W, the first shield 200 is the beam pattern of Class E. It is maintained in the same state as when forming the second shield 300 is operated. Therefore, there is a need for an apparatus for operating the first shield 200 and the second shield 300 independently, instead of simultaneously operating the same. A description thereof will be given later.

FIG. 7A is a perspective view illustrating a shield driving unit according to an exemplary embodiment of the present invention, and FIG. 7B illustrates an exploded perspective view of FIG. 7A.

Since the first shield 200 and the second shield 300 have already been described above, the description thereof will be omitted, and the shield driver 400 will be described in detail.

The shield driver 400 may include a driving means and a driving gear part. The drive means provides a driving force to the drive gear portion. As the driving means, a step motor 410 capable of rotating by a desired rotation angle may be used.

In general, the step motor 410 has an advantage in controlling the accurate angle compared to other AC servo motor, DC servo motor. The step motor 410 is a device that converts digital pulses into mechanical axial motion, and the pulses are applied by a digital source. According to the number of pulses, the axis of the motor rotates at a fixed angle. If the pulse interval is set properly, driving method and speed control are possible. However, in order to realize the technical idea of the present invention, other driving devices such as a servo motor and a linear motor may be used instead of the step motor.

The driving gear unit may include a driving unit body 420, a first driving gear unit 510, a second driving gear unit 550, and a main gear unit. The driving gear unit sequentially serves to operate the first shield 200 and the second shield 300 to form various beam patterns.

The driving body 420 supports the driving means, the first driving gear 510, the second driving gear 550, and the main gear. The driving unit body 420 may include a first catching portion 501 that prevents rotation of the first shield 200, a second catching portion 503 that prevents rotation of the second shield 300, and a third catching portion 505. ) May be included.

The first driving gear unit 510 rotates the first shield 200. The first driving gear part 510 may include a first driven member 520, a first elastic part 540, and a first driving gear 530. The first driven body 520 is inserted into and mounted on the rotation shaft 210 of the first shield 200 to rotate integrally with the first shield 200. The first driven body 520 includes a first locking protrusion 522 on the outer circumferential surface in the radial direction, and when the first locking protrusion 522 is caught by the first locking portion 501, Rotation is stopped.

The first elastic part 540 may be inserted into the rotation shaft 210 of the first shield 200 to rotate integrally with the first shield 200. Alternatively, the first elastic part 540 may be fixedly attached to the first driven member 520. The first elastic portion 540 may include one foot portion 542 attached to the first driven member 520 and having an elastic force. Therefore, even if the first shield 200 is fixed, if a force is applied to the foot portion 542, the foot portion 542 of the first elastic portion may be pushed back in a range that elasticity allows.

The first drive gear 530 is fitted in a state in which it is not fixed to the rotation shaft 210 of the first shield 200. The first drive gear 530 is located adjacent to the first driven body 520. The first drive gear 530 may rotate while being fitted to the first shield 200, but in principle, the first drive gear 530 rotates alone, and the first shield 200 does not rotate. However, the first driving gear 530 includes a first driving protrusion 532, so that the first driving protrusion 532 is a foot portion of the first elastic part 540 while the first driving gear 530 rotates. 542) may be caught. At this time, the first driving protrusion 532 may push the foot portion 542 of the first elastic portion 540 to rotate the first shield 200 integrally connected with the first elastic portion 540.

In this process, even when the rotation of the first shield 200 is stopped by the first shield 200 being caught by the first locking portion 501, the first driving gear 530 continues to rotate. The first drive protrusion 532 of the first drive gear 530 pushes the foot portion 542 of the first elastic portion 540, but since the first shield 200 does not rotate, the elastic force of the foot portion 542 is decreased. Foot 542 is pushed back within the allowable range. Detailed description of the operation of the first driving gear unit 510 will be described later.

The second driving gear unit 550 rotates the second shield 300. The second driving gear unit 550 may include a second driven body 570, a second driving gear 560, and a second elastic part 580. The second driven member 570 is inserted into and mounted on the rotation shaft 310 of the second shield 300 and includes a protrusion 575 on an outer circumferential surface thereof. Rotating the second driven member 570 may rotate the second shield 300 which is integrally connected. The protrusion 575 is a part which protrudes on a part of the outer circumferential surface and is caught by the second drive protrusion 565 of the second drive gear 560, and the second drive gear 560 may rotate along the outer circumferential surface of the protrusion 575. have.

The second drive gear 560 has gear teeth on its outer circumferential surface and inserts the second driven member 570 therein. However, the second driving gear 560 may not be integrally attached to the second driven member 570, and the second driven member 570 may not rotate even when the second driving gear 560 rotates. The second drive gear 560 includes a second drive protrusion 565 on the inner circumferential surface, so that the protrusion of the second driven body 570 on the second drive protrusion 565 while the second drive gear 560 rotates. 575 may be engaged to rotate the second driven body.

The second elastic portion 580 is attached to the rotation axis 310 of the second shield 300 and includes two foot portions 583 and 585. The second elastic portion 580 is caught by the second locking portion 503 of the drive body by the two foot portion (583, 585) to suppress the rotation of the second shield (300). However, when the second driven member 570 is rotated, one foot 583 of the second elastic part 580 is caught by the second locking part 503 of the drive body, and the other foot 585 is The foot 585 is pushed back as the second driven body 570 rotates while being caught by the side protrusion 577 of the second driven body 570. Detailed operations of the second driving gear unit 550 will be described later.

The main gear unit transmits power to the first driving gear unit 510 and the second driving gear unit 550 while rotating by the driving force provided by the driving unit. For example, the main gear unit may be a lead screw 595 including teeth on the outer circumferential surface of the long cylinder directly connected to the rotation shaft of the step motor 410. Here, the lead screw 595 is an element that does not intersect or parallel with the rotation axis of the first drive gear unit 510 and the second drive gear unit 550, may be similar to the pinion and may be referred to as a worm gear. . When the long cylinder of the lead screw 595 rotates, the first driving gear 530 of the first driving gear unit and the second driving gear 560 of the second driving gear unit are rotated by the teeth attached to the cylinder.

8A to 8F show the operation according to the beam pattern of the shield driver according to the present invention.

8A shows the operation of the shield driver to form a beam pattern of class H. FIG. Looking at the operation of the shield drive unit 400, the foot portion 542 of the first elastic portion 540 of the first drive gear portion 510 is caught in a state in which the third engaging portion 505 of the drive body. In other words, one foot portion 542 is included in the coil spring wound around the rotating shaft as an example of the first elastic portion, and the foot portion 542 of FIG. 8A has a large open state, and the force to recover by the elastic force is applied. It is working. However, the first locking protrusion 522 of the first driven body 520 is caught by the first driving protrusion 532 of the first driving gear 530 so that the first driven body 520 and the first driven body The connected first shield 200 is stopped.

In the second drive gear portion 550, the two foot portions 583 and 585 of the second elastic portion 580 span the second locking portion 503, and thus are connected to the second driven member 570 and the second driven member. The second shield 300 is stopped. Accordingly, the first shield and the second shield as shown in FIG. 6A are arranged to form a beam pattern of class H. FIG.

8B shows the operation of the shield driver forming a beam pattern of class RHD C. FIG. Looking at the operation of the shield drive unit 400, by rotating the lead screw 595, the main gear unit to rotate the first drive gear 530 and the second drive gear 560 by a predetermined angle. Here, as an example, the first shield 200 is rotated by an angle of 45 degrees (°) so that the first drive gear 530 and the second drive gear 560 are activated to activate the first shield protrusion 230 from the arrangement of FIG. 8A. Can be rotated by an angle of 45 degrees.

However, since the first shield 200 and the second shield 300 are not integrally attached to the first drive gear 530 and the second drive gear 560, in principle, the first drive gear 530. And the second driving gear 560 cannot rotate the first shield 200 and the second shield 300 immediately by rotation.

However, by rotating the first drive gear 530 and the second drive gear 560 by an angle of 45 degrees (°), only the first shield is rotated by an angle of 45 degrees (°) while the second shield 300 is stopped. The operation to make is as follows.

When the first drive gear 530 rotates in the counterclockwise direction, the first driven member 520 can be rotated in the counterclockwise direction by a restoring force by the foot portion 542 of the first elastic portion. Thus, the first shield 200 integrally connected with the first driven body 520 can be rotated. However, the first driven body 520 also rotates only by the angle at which the first driving gear 530 is rotated, such that the locking protrusion 522 of the first driven body 520 is caught by the first driving protrusion 532. Rotation of the driven body 520 is stopped.

On the other hand, even if the second drive gear 560 is rotated by a predetermined angle in the counterclockwise direction, the second drive gear 560 is not caught by the protrusion 575 of the second driven body 570 by the second drive protrusion 565. ) Rotate only.

Accordingly, the shield driver 400 rotates the first shield 200 to activate the first shield protrusion 230 to operate the first shield 200 and does not operate the second shield 300. Thus, a beam pattern of class RHD C as shown in FIG. 6B is formed.

8C shows the operation of the shield driver forming a beam pattern of class LHD C. FIG. Referring to the operation of the shield drive unit 400, the lead screw 495 is rotated from the arrangement state of FIG. 8B to rotate the first drive gear 530 and the second drive gear 560 by a predetermined angle.

The first drive gear 530 rotates in the counterclockwise direction, such that the first drive protrusion 532 of the first drive gear 530 rotates to the same position as the third locking portion 505 of the drive body. The first driven member 520 can be rotated counterclockwise by the restoring force by the foot 542 of the first elastic portion. The first shield 200 integrally connected to the first driven body 520 also rotates, and the second shield protrusion 532 is activated by the rotation of the first shield 200 to form a beam pattern of class C.

On the other hand, even if the second drive gear 560 is rotated by a predetermined angle in the counterclockwise direction, the second drive gear 560 is not caught by the protrusion 575 of the second driven body 570 by the second drive protrusion 565. ) Only the second shield 300 is not operated.

8D shows the operation of the shield driver to form a class V beam pattern. Referring to the operation of the shield driving unit 400, the lead screw 595 is rotated from the arrangement state of FIG. 8C to rotate the first driving gear 530 and the second driving gear 560 by a predetermined angle.

As the first drive gear 530 rotates counterclockwise, the first drive protrusion 532 of the first drive gear 530 pushes the foot 542 of the first elastic portion. Therefore, the first driving gear 530 and the first elastic portion 540 rotate together, and rotate the first driven body 520 and the first shield 200 integrally connected to the first elastic portion 540. The third shield protrusion 234 is activated by the rotation of the first shield 200 to form a beam pattern of class V.

On the other hand, even if the second drive gear 560 is rotated by a predetermined angle in the counterclockwise direction, the second drive gear 560 is not caught by the protrusion 575 of the second driven body 570 by the second drive protrusion 565. ) Only the second shield 300 is not operated.

Accordingly, the second shield 300 may not be operated and may form a class V beam pattern by the rotation of the first shield 200.

8E shows the operation of the shield driver to form a beam pattern of class E. FIG. Referring to the operation of the shield driving unit 400, the lead screw 595 is rotated from the arrangement state of FIG. 8D to rotate the first driving gear 530 and the second driving gear 560 by a predetermined angle.

As the first drive gear 530 rotates counterclockwise, the first drive protrusion 532 of the first drive gear 530 pushes the foot 542 of the first elastic portion. Therefore, the first driving gear 530 and the first elastic portion 540 rotate together, and rotate the first driven body 520 and the first shield 200 integrally connected to the first elastic portion 540. The fourth shield protrusion 236 is activated by the rotation of the first shield 200 to form a beam pattern of class E. After the rotation of the first shield 200, the first locking protrusion 522 of the first driven body 520 is caught by the first locking portion 501. Therefore, the first shield 200 integrally connected with the first driven body 520 can no longer rotate.

On the other hand, even if the second drive gear 560 rotates by a predetermined angle in the counterclockwise direction, the second drive protrusion 565 does not catch the protrusion 575 of the second driven member, so only the second drive gear 560 rotates. Therefore, the second shield 300 is not operated.

Here, according to the same operating principle as in FIG. 8D, the second shield 300 is not operated and a beam pattern of class E may be formed by the rotation of the first shield 200.

8F shows the operation of the shield driver to form a beam pattern of class W. FIG. Referring to the operation of the shield driving unit 400, the lead screw 595 is rotated from the arrangement state of FIG. 8E to rotate the first driving gear 530 and the second driving gear 560 by a predetermined angle. Here, as an example, the first drive gear 530 and the second drive gear 560 can be rotated counterclockwise by an angle of 90 degrees.

Even if the first driving gear 530 rotates in the counterclockwise direction, the first driven member 520 does not rotate any more because the first locking protrusion 522 is caught by the first locking portion 501. Therefore, the first shield 200 does not rotate anymore. However, the first driving protrusion 532 of the first drive gear 530 is rotated while pushing the foot portion 542 of the first elastic portion is maintained in a state rotated by a predetermined angle with the foot portion 542 of the first elastic portion.

The second drive gear 560 rotates to engage the protrusion 575 of the second driven body 570 by the second driving protrusion 565 to rotate the second driven body 570. Accordingly, the second shield 300 integrally connected with the second driven member 570 is also rotated, and the shield plate 320 of the second shield is also rotated counterclockwise by an angle of 90 degrees to forward. Prevents some Thus, a beam pattern of class W can be formed by operating the second shield 300 while the first shield 200 is stopped.

As described above, various types of beam patterns may be formed by sequentially operating the first shield 200 and the second shield 300. In the above, the operations of the first shield 200 and the second shield 300 have been described in the order of the classes H, RHD C, LHD C, V, E, and W. Beam patterns may be formed in RHD C and H order. It may also be operated in class RHD C and H order based on class C or in class V, E and W order based on class C.

Therefore, the shield driver 400 according to the present invention can form various beam patterns by controlling the rotation of the first shield 200 and the second shield 200 by one driver.

However, as described above, the driving direction of the vehicle is not the same according to the left driving or the right driving for each country, so that a shield for each country must be manufactured separately to manufacture the head lamp for LHD and the head lamp for RHD, respectively. there was. Accordingly, the present invention is to propose a vehicle headlamp that can be used in common LHD and RHD based on the structure of the shield driving unit described above.

The vehicle head lamp according to an embodiment of the present invention further includes a shield controller (not shown) and a light amount controller (not shown).

A vehicle lamp head according to an embodiment of the present invention includes a first head lamp assembly and a second head lamp assembly and shield including a lamp, a first shield 200, a second shield 300, and a shield driver 400. It may include a control unit. The apparatus may further include a light amount controller, an aiming device, and a tilting device.

The head lamp assembly has the same structure as described with reference to FIGS. 2, 3, 6-8. That is, the first shield 200 and the second shield 300 are rotated by the operation of the shield driver 400 described above. However, the number, arrangement, and the like of the shield protrusions of the first shield 200 are different. The first head lamp assembly and the second head lamp assembly are respectively mounted to the front of the vehicle, hereinafter the first head lamp assembly is mounted to the right side of the vehicle with the left head lamp assembly mounted to the left side of the vehicle. This will be referred to as a right head lamp assembly and will be described.

FIG. 9 illustrates a first shield of a left head lamp assembly and a first shield of a right head lamp assembly of a vehicle head lamp according to an exemplary embodiment of the present invention.

As shown in FIG. 9, the arrangement of the shield protrusions of the first shield 200 of the left head lamp assembly and the first shield 200 of the right head lamp assembly is different. As shown in FIG. 9, the left head lamp assembly includes shield protrusions that form a class H beam pattern, a class RHD C beam pattern, a class V beam pattern, a class LHD C beam pattern in a clockwise direction, and the right head lamp assembly. Shield protrusions are formed to form a class H beam pattern, a class LHD C beam pattern, a class V beam pattern, and a class LHD C beam pattern in a clockwise direction.

As described above, the shield driver 400 sequentially rotates the first shield 200 and the second shield 300 to form various beam patterns. At this time, in the present invention, in the case of the left head lamp assembly, as the first shield 200 rotates counterclockwise, the shield protrusion is activated in the order of H, RHD C, V, and LHD C, and the shield protrusion of class LHD C is activated. In the activated state, the second shield 300 is activated. In FIG. 8, as the first shield 200 rotates counterclockwise, the first shield 200 is converted into a class H, RHD C, LHD C, V, and E beam pattern, and the first shield 200 is activated in a class E beam pattern. In the present invention, the second shield 300 is activated to form a class W beam pattern. In the present invention, the number of the shield protrusions, the spacing between the shield protrusions, and the arrangement of the shield protrusions are different from those of FIG. Since the operation principle is the same, it is activated in the order of class H, RHD C, V, LHD C, and the second shield 300 is activated while the shield protrusion of the class LHD C of the first shield 200 is activated. . Similarly, in the case of the right head lamp assembly, as the first shield 200 rotates counterclockwise, the first head lamp assembly is activated in the order of H, LHD C, V, and RHD C, and the shield protrusion of the class RHD C is activated. The second shield 300 is activated.

The arrangement of the shield protrusions is not limited to the above, and in the case of the left head lamp assembly, the second shield 300 is activated while the LHD C of the first shield 200 is activated, and in the case of the right head lamp assembly. If the second shield 300 is activated in the state in which the RHD C of the first shield 200 is activated, various modifications may be made by the arrangement of the remaining shield protrusions and the addition of other shield protrusions. However, both the left head lamp assembly and the right head lamp assembly must have shield projections of class LHD C and class RHD C.

The shield controller (not shown) controls the shield driver 400 of the left head lamp assembly and the right head lamp assembly, respectively. In the conventional case, since the shields of the left head lamp assembly and the right head lamp assembly have the same shape, there is no need to control the left head lamp assembly and the right head lamp assembly, respectively. However, in the case of the present invention, since the shield control portions of the shield protrusions of the left head lamp assembly and the right head lamp assembly are different from each other as described above, the shield of the left head lamp assembly and the right head lamp assembly depends on the beam pattern to be implemented. Control the driving units respectively. Detailed description thereof will be described later.

The light amount controller (not shown) controls the light amount of the lamps of the left head lamp assembly and the right head lamp assembly, respectively. In the present invention, the light quantity of the left and right lamps is adjusted or controlled differently in some cases, which will be described later.

Hereinafter, when the first shield 200 of the left head lamp assembly and the right head lamp assembly has a shape as shown in FIG. 9, the beam patterns of the head lamp for the left driving (LHD) and the head lamp for the right driving (RHD) are formed. This will be described with reference to FIGS. 10 and 11.

First, an operation of forming each beam pattern of the head lamp for LHD will be described with reference to FIG. 10.

10A to 10E are diagrams illustrating positions of shield protrusions according to various beam patterns in an LHD headlamp using first shields of the left and right headlamps of FIG. 9.

The class (LHD) H beam pattern may be implemented by controlling the shield controller to activate the class H shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 10A. Although no shield projection is formed in the drawing, the circumferential surface forming the H beam pattern can also be interpreted as a shield projection.

The class (LHD) C beam pattern may be implemented by controlling the shield controller to activate the class LHD C shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 10B.

The class (LHD) V beam pattern may be implemented by controlling the shield controller so that the class V shield protrusions of the left head lamp assembly and the right head lamp assembly are activated as shown in FIG. 10C. At this time, the light amount controller can control the light amount of the lamp to be relatively small as compared with the class C. For example, in class C, when the lamp power of the left and right lamp assemblies is controlled to 35W, in class V, the lamp power of the left and right lamp assemblies can be controlled to a relatively small 32W. In addition, it is preferable to tilt the left and right lamp assemblies to the left and right at a predetermined angle, respectively, by a tilting device that rotates the left and right lamp assemblies to the left and right, respectively, to widen the light irradiation width. In the case of the class V beam pattern, since the beam pattern is in an environment where the brightness of the surrounding light is secured to some extent, the light quantity of the lamp is controlled to be relatively small, and the left and right tilting devices are required to have a wider field of view than the class C beam pattern. It is preferable to tilt the left and right lamp assemblies at left and right at a predetermined angle, respectively.

The tilting device for rotating the lamp assembly from side to side is well known in the art, and detailed description thereof will be omitted.

The class (LHD) E beam pattern may be implemented by controlling the shield controller to activate the class LHD C shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 10D. This is the same as the position of the shield projection of the class C. In the present invention, in order to implement the class E, the light quantity controller can control the light quantity of the lamp to be relatively large compared to the class C. For example, when the power of the lamp of the left and right lamp assembly of the class C is controlled to 35W, the class E can control the power of the lamp of the left and right lamp assembly to a relatively large 38W. Further, in order to implement class E, the left and right lamp assemblies may be directed upwards at predetermined angles by an aming device that rotates the left and right lamp assemblies up and down, respectively. Thus, light can be irradiated farther than in Class C. Aiming device for rotating the lamp assembly up and down is a known technique will not be described in detail.

Class (LHD) W is the second shield 300 is activated in the case of the left head lamp assembly, with the shield control to enable the class LHD C shield protrusion of the left head lamp assembly and the right head lamp assembly as shown in FIG. 10E. do. In this case, in order to implement the class W, the light amount control unit may control the light amount of the lamp to be relatively large in the case of the head lamp assembly on the left side and the light amount of the lamp in the case of the head lamp assembly on the right side. For example, if the lamp power of the left and right lamp assemblies of class C is controlled to 35W, the class W controls the lamp power of the left lamp assembly to a relatively large 38W and the power of the lamp of the right lamp assembly to 32W, which is relatively small. Can be controlled by In addition, like the class E class, the right and left lamp assemblies can be faced upward by predetermined angles by the aming apparatus.

Next, an operation of forming each beam pattern of the RHD headlamp will be described with reference to FIG. 11.

11A to 11E illustrate positions of shield protrusions according to various beam patterns in an RHD headlamp using first shields of the left and right headlamps of FIG. 9.

The class (RHD) H beam pattern may be implemented by controlling the shield controller to activate the class H shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 11A.

The class (RHD) C beam pattern may be implemented by controlling the shield controller to activate the class RHD C shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 11B.

The class (RHD) V beam pattern may be implemented by controlling the shield controller to activate the class V shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 11C. At this time, the light amount controller can control the light amount of the lamp to be relatively small as compared with the class C. For example, in class C, when the lamp power of the left and right lamp assemblies is controlled to 35W, in class V, the lamp power of the left and right lamp assemblies can be controlled to a relatively small 32W. In addition, it is preferable to tilt the left and right lamp assemblies to the left and right at a predetermined angle by the tilting device so that the width to which the light is irradiated is wide.

The class (RHD) E beam pattern may be implemented by controlling the shield controller to activate the class RHD C shield protrusions of the left head lamp assembly and the right head lamp assembly as shown in FIG. 11D. This is the same as the position of the shield projection of the class C. In the present invention, in order to implement the class E, the light quantity controller can control the light quantity of the lamp to be relatively large compared to the class C. For example, when the power of the lamp of the left and right lamp assembly of the class C is controlled to 35W, the class E can control the power of the lamp of the left and right lamp assembly to a relatively large 38W. In addition, in order to implement class E, the left and right lamp assemblies can be directed upward by a predetermined angle by means of the upper and lower aiming devices. Thus, light can be irradiated farther than in Class C.

Class (RHD) W is the second shield 300 is activated in the case of the left head lamp assembly, with the shield control to enable the class RHD C shield projections of the left head lamp assembly and the right head lamp assembly as shown in FIG. 11E. do. In this case, in order to implement the class W, the light amount controller may control the light amount of the lamp to be relatively large in the case of the head lamp assembly on the right side and the light amount of the lamp in the case of the head lamp assembly on the left side. For example, if the power of the lamp of the left and right lamp assemblies of class C is controlled to 35W, in class W, the power of the lamp of the right lamp assembly is controlled to 38W which is relatively large and the power of the lamp of the left lamp assembly is controlled to 32W which is relatively small. Can be controlled by In addition, like the class E class, the right and left lamp assemblies can be faced upward by predetermined angles by the aming apparatus.

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 may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

70: lamp 80: lens
90: housing 100: shield drive part
200: first shield 300: second shield
320: shield plate 410: step motor
420: drive body

Claims (14)

A lamp for irradiating light;
A first shield having one or more shield protrusions for blocking a part of light irradiated from the lamp on an outer circumferential surface and forming a plurality of beam patterns;
A second shield for blocking beam irradiation in the near area; And
A shield driver for operating the first shield and the second shield to form a predetermined beam pattern,
A first head lamp assembly formed at one side of the front of the vehicle and a second head lamp assembly formed at the other side of the front of the vehicle; And
A shield controller configured to control shield drivers of the first head lamp assembly and the second head lamp assembly, respectively;
A vehicle head lamp having different arrangements of shield protrusions of the first shield of the first head lamp assembly and the second head lamp assembly. The method of claim 1,
The first head lamp assembly and the first shield of the second head lamp assembly include a shield protrusion forming an RHD C beam pattern and a shield protrusion forming an LHD C beam pattern, respectively.
The shield driver is activated with a shield protrusion forming a second shield of the first head lamp assembly to form an LHD C beam pattern of the first head lamp assembly, and the second shield of the second lamp assembly is activated by the second lamp assembly. Vehicle headlamps to be activated with shield bumps forming a RHD C beam pattern. The method of claim 2,
The shield controller causes the second shield of the first head lamp assembly to be activated together with the shield protrusion forming the LHD C beam pattern of the first head lamp assembly, and the shield to form the LHD C beam pattern of the second head lamp assembly. Controls the projection to activate to form an LHD W beam pattern,
To activate the second shield of the second head lamp assembly with the shield protrusion forming the RHD C beam pattern of the second head lamp assembly and to activate the shield protrusion forming the RHD C beam pattern of the first head lamp assembly. A vehicle headlamp that controls to form an RHD W beam pattern. The method of claim 3, wherein
Further comprising a light amount control unit for controlling the amount of light of the lamp of the first head lamp assembly and the second head lamp assembly, respectively,
The light amount controller controls the light amount of the lamp of the second head lamp assembly to be smaller than the light amount of the lamp of the first head lamp assembly when forming the LHD W beam pattern, and when forming the RHD W beam pattern. And controlling the light amount of the lamp of the first head lamp assembly to be smaller than the light amount of the lamp of the second head lamp assembly. The method of claim 2,
Further comprising a light amount control unit for controlling the amount of light of the lamp of the first head lamp assembly and the second head lamp assembly, respectively,
The shield driver controls to activate the shield protrusion forming the LHD C beam pattern of the first head lamp assembly and the shield protrusion forming the LHD C beam pattern of the second head lamp assembly. Increasing the amount of light of the lamp of the head lamp assembly and the second head lamp assembly to form an LHD E beam pattern,
The shield driving unit controls to activate the shield protrusion forming the RHD C beam pattern of the first head lamp assembly and the shield protrusion forming the RHD C beam pattern of the second head lamp assembly, and the light amount controller controls the first head. The head lamp for a vehicle, wherein the amount of light of the lamp assembly and the lamp of the second head lamp assembly is increased to form an RHD E beam pattern. The method of claim 2,
Further comprising a light amount control unit for controlling the amount of light of the lamp of the first head lamp assembly and the second head lamp assembly, respectively,
The first head lamp assembly and the first shield of the second head lamp assembly further comprise shield protrusions forming a class V beam pattern,
The shield driver controls to activate the shield protrusion forming the class V beam pattern of the first head lamp assembly and the shield protrusion forming the class V beam pattern of the second head lamp assembly, and the light amount controller controls the first head. A head lamp for a vehicle, wherein the amount of light of the lamp assembly and the lamp of the second head lamp assembly is reduced to form a class V beam pattern. The method of claim 2,
The shield protrusion of the first shield of the first head lamp assembly is sequentially arranged a shield protrusion forming an RHD C beam pattern, a shield protrusion forming a class V beam pattern, and a shield protrusion forming an LHD C beam pattern.
The shield head of the first shield of the second head lamp assembly includes a shield protrusion forming an LHD C beam pattern, a shield protrusion forming a Class V beam pattern, and a shield protrusion forming an RHD C beam pattern. lamp. The method of claim 3, wherein
And an aiming device for vertically rotating the first lamp assembly and the second lamp assembly.
And the aming device rotates the first lamp assembly and the second lamp assembly upward at a predetermined angle to form the LHD W beam pattern or the RHD W beam pattern. The method of claim 5, wherein
And an aiming device for vertically rotating the first lamp assembly and the second lamp assembly.
And the aming device rotates the first lamp assembly and the second lamp assembly upward at a predetermined angle to form the LHD E beam pattern or the RHD E beam pattern. The method according to claim 6,
Further comprising a tilting device for rotating the first lamp assembly and the second lamp assembly left and right,
And the tilting device rotates the first lamp assembly and the second lamp assembly at a predetermined angle to form the class V beam pattern, thereby widening the width to which light is irradiated. The method of claim 2,
The shield driving unit
Drive means for providing a driving force; And
It includes a drive gear portion for transmitting a driving force by the drive means to the first shield and the second shield,
The drive gear unit includes a drive unit body including a first locking portion for preventing rotation of the first shield and a second locking portion for preventing rotation of the second shield;
A first drive gear part for rotating the first shield;
A second drive gear part for rotating the second shield; And
It includes a main gear portion for transmitting a driving force by the drive means to the first drive gear portion and the second drive gear portion,
And the second shield is operated by the second drive gear portion while the first shield is stopped rotating by the first catch portion. The method of claim 11,
The first drive gear portion
A first driven member inserted into the rotating shaft of the first shield and having a first locking protrusion on an outer circumferential surface thereof;
A first elastic part inserted into the rotating shaft of the first shield and having one foot; And
A first drive gear for rotating the first shield by rotating the first elastic part,
The rotation of the first shield is stopped when the first locking projection of the first driven body is caught by the first locking portion when the first shield is rotated by the first driving gear. The method of claim 12,
The second drive gear portion
A second driven body inserted into and mounted on a rotation shaft of the second shield and having a protrusion on an outer circumferential surface thereof; And
And a second drive gear having a second driving protrusion for inserting the second driven body into the second shield and rotating the second driven body when engaging the projecting portion of the second driven body. Head lamp. The method of claim 13,
And a lead screw connected to the driving means and having a tooth on an outer circumferential surface of the cylindrical rod to transfer power to the first drive gear portion and the second drive gear portion.

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