KR101433224B1 - Apparatus and method for providing multiple beam of vehicle lamp - Google Patents

Abstract

An apparatus and method for complex beam implementation of a vehicle lamp are provided. An apparatus for realizing a composite beam of a lamp for a vehicle according to an embodiment of the present invention includes: a plurality of first light source units for irradiating a first pattern; At least one second light source unit for irradiating a second pattern; A first driving unit for driving the first light source unit up and down; And a control unit for controlling the first driving unit and for controlling the second pattern so as to form a third pattern.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

[0001] The present invention relates to an apparatus and a method for realizing a composite beam of a vehicle lamp, and more particularly, in the absence of an opposing vehicle, by superimposing a low beam on a high beam or superposing high beams on each other, And more particularly, to an apparatus and a method for implementing a composite beam of a vehicle lamp capable of ensuring visibility.

In general, automobiles have become an indispensable product in the modern society because of its advanced technology and improved mobility and usability. In order to easily identify objects located in the vicinity of the vehicle when driving at night, lighting functions and other vehicles And a signal lamp for informing the running state of the vehicle. For example, headlights and fog lights are aimed at lighting functions, and turn signal lights, taillights, brake lights, side markers and the like are intended for signal functions.

Such automotive lamps have typically used light sources such as halogen lamps or high intensity discharge (HID) lamps. Recently, a light emitting diode has been used as a light source. The light emitting diode has a color temperature of about 5500K, which is close to solar light, which minimizes fatigue in a human eye and minimizes the size thereof. It is also economical.

However, there is a problem that the lamp configuration becomes complicated by introducing the light emitting diode, thereby increasing the number of processing steps. Further, since the lamp using the light emitting diode is higher in price than the halogen lamp, a problem of cost increase arises. Particularly, in recent years, a number of vehicles have implemented a high beam as a dynamic high beam (DHB). In order to realize DHB, a spot beam There is a problem that the module size is enlarged and the cost is increased because it needs to be investigated using a separate optical unit.

An object of the present invention is to provide an apparatus and a method for implementing a composite beam for a vehicle lamp that superimposes low beams on a high beam or superposes high beams on each other to reinforce a light amount of a high beam.

It is another object of the present invention to provide an apparatus and method for implementing a composite beam for a vehicle lamp that reduces the module size and reduces the number of parts by reducing the amount of high beams by switching the low beam to a high beam.

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

According to an aspect of the present invention, there is provided an apparatus for realizing a composite beam of a lamp for a vehicle, including: a plurality of first light source units for irradiating a first pattern; At least one second light source unit for irradiating a second pattern; A first driving unit for driving the first light source unit up and down; And a control unit for controlling the first driving unit and for controlling the second pattern so as to form a third pattern.

According to another aspect of the present invention, there is provided an apparatus for realizing a composite beam of a lamp for a vehicle, comprising: a plurality of first light source units for irradiating a first pattern; and at least one second light source unit for irradiating a second pattern A lamp part including; A driving unit for driving the first light source unit and the second light source unit; And a controller for controlling the driving unit to implement a third pattern in which the first pattern is superimposed on the second pattern.

According to another aspect of the present invention, there is provided a method for implementing a composite beam for a vehicle lamp, comprising: recognizing an opposing vehicle; If the counter vehicle does not exist, examining a second pattern; And forming a third pattern by superimposing the first pattern on the second pattern.

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

According to the present invention, the low beam can be superimposed on the high beam of the vehicle to enhance the visibility of the distance.

In addition, it is possible to reduce the module size and the number of components and to reduce the cost by irradiating the high beam of the vehicle with the low beam superimposed thereon.

FIG. 1 is a perspective view of a vehicle lamp to which a composite beam implementing apparatus for a vehicle lamp according to an embodiment of the present invention is applied.
FIG. 2 is a schematic view showing a configuration of a composite beam implementing apparatus for a vehicle lamp according to an embodiment of the present invention.
3 is a view for explaining a high beam split pattern structure formed by the composite beam implementing apparatus of the vehicle lamp of FIG.
Fig. 4 is a diagram showing a high beam and a low beam irradiated to the road by the composite beam implementing apparatus of the vehicle lamp of Fig. 2; Fig.
5A is a view showing a general beam pattern in the absence of an opposing vehicle.
Fig. 5B is a view showing a beam pattern formed by the composite beam implementing apparatus of the vehicle lamp of Fig. 2 in the absence of an opponent vehicle. Fig.
Fig. 6 is a view showing recognition of an opponent vehicle by the composite beam implementing apparatus of the vehicle lamp of Fig. 2;
FIG. 7 is a diagram showing a comparison of light distribution patterns irradiated on the road according to whether or not the composite beam implementing apparatus of the vehicle lamp of FIG. 2 is applied.
8 is a block diagram showing a configuration of an apparatus for implementing a composite beam of a vehicle lamp according to another embodiment of the present invention.
9 is a flowchart of a method for implementing a composite beam of a vehicle lamp according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

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

FIG. 1 is a perspective view of a vehicle lamp according to an embodiment of the present invention. FIG. 2 is a perspective view showing a configuration of an apparatus for implementing a composite beam of a vehicle lamp according to an embodiment of the present invention. It is a conceptual diagram.

Referring to FIG. 1, a vehicle lamp 100 to which a composite beam implementing apparatus for a vehicle lamp according to an embodiment of the present invention is applied includes a first light source unit 110 and a second light source unit 120. Here, the first light source unit 110 irradiates the first pattern, and the second light source unit 120 irradiates the second pattern. At this time, the first pattern may be a low beam, and the second pattern may be a high beam. Of course, the first pattern and the second pattern may be reversed, and other beam patterns may be applied to those skilled in the art. In FIG. 1, four and one first light source unit 110 and two second light source units 120 are shown, but the present invention is not limited thereto, and the number of light source units may be appropriately changed.

2, the composite beam implementing apparatus for a vehicle lamp includes a plurality of first light source units 110 for irradiating a first pattern included in a lamp 100 for a vehicle, at least one second light source unit 110 for irradiating a second pattern, A first driving unit 210 for driving a light source unit 120, an irradiation direction of the first light source unit 110 and a second driving unit 210 for controlling the second pattern, And a control unit 300 that forms a pattern. In addition, the composite beam implementing apparatus for a vehicle lamp may further include a second driving unit 220 for driving the irradiation direction of the second light source unit 120 to the left and right. At this time, the control unit 3000 can control the second driving unit 220 like the first driving unit 210. The composite beam implementing device for the vehicle lamp includes a recognition unit 400 for recognizing the opposing vehicle, As shown in FIG.

Hereinafter, the case where the first pattern is a low beam and the second pattern is a high beam will be described as an example. Of course, those skilled in the art will appreciate that the first pattern and the second pattern can be different beam patterns.

The first light source unit 110 functions as a downward beam irradiating a low beam, and a plurality of lamps 100 are provided on the vehicle lamp 100. The first light source unit 110 may include at least one light emitting diode or a light bulb. Here, the light emitting bulb can be embodied as a lamp-type light source. Further, it will be apparent to those skilled in the art that the light emitting diode may include all kinds of diodes using an electroluminescent effect such as an LED (Light Emitting Diode) and an OLED (Organic Light-Emitting Diode). Particularly, the first light source unit 110 is an LED light source that is a technology for automatically controlling the angle of illumination and the illuminance without any operation of the driver in accordance with various driving conditions such as a curved road, a city area, a highway, an intersection, For adaptation of AFLS (Adaptive Front Lighting System), it is composed of two to eight, preferably four. In this case, the light emitted from the light emitting diode may have a predetermined directionality, unlike the light bulb which is implemented as a lamp type such as HID.

The second light source unit 120 serves as an upward light for illuminating a high beam, and at least one of the light sources is provided on the vehicle lamp 100. Particularly, the second light source unit 120 can form a divided beam by irradiating a beam independently of a plurality of light emitting diodes, and by individually lighting or extinction light emitting diodes illuminating a spot corresponding to the object, Unit 120 may implement a dynamic upbeat, i.e. Dynamic High Beam (DHB). The divided beam and the DHB will be described in detail later. In addition, each second light source unit 120 may include a plurality of light emitting diodes. This may cause a traffic accident by causing the driver of the preceding vehicle or the opponent vehicle to glare due to the high beam. Therefore, when a vehicle or a pedestrian exists in front of the vehicle, the light emitting diode is selectively blinked so that the high beam does not reach the corresponding position . This will be described in detail later. The number of the second light source units 120 is one or more, preferably one for the sake of reduction in module size and ease of configuration.

The first driving unit 210 drives the first light source unit 110 in the upward and downward directions so that the first light source unit 110 is level-up-downed. In addition, the second driving unit 220 drives the second light source unit 120 in the left and right direction, thereby swiveling the second light source unit 120. That is, the irradiation direction of the first light source unit 110 can be moved up and down by the first driving unit 210, and the irradiation direction of the second light source unit 120 can be moved by the second driving unit 220, . 2, the first light source unit 110 and the second light source unit 120 are driven by separate driving units. However, the present invention is not limited thereto. For example, the first driving unit 210 and the second driving unit 220 may not be separately installed, but a single module driving unit may be installed. The first driving unit 210 and the second driving unit 220 may be implemented by a motor, an actuator, or the like.

The control unit 300 controls the first driving unit 210 and / or the second driving unit 220 to implement a composite beam in which beams are superimposed. For example, the control unit 300 may control the first driving unit 210 to adjust the first pattern upward to turn on the second pattern, thereby forming a third pattern, which is a composite beam. That is, the control unit 300 controls the first driving unit 210 to raise the irradiation direction of the first light source unit 110 to implement a composite beam in which the low beam is superimposed on the high beam. In addition, the control unit 300 may control the second driving unit 220 to swing the irradiation direction of the second light source unit 110 inward to form a fourth pattern in which the second pattern is superimposed. That is, a composite beam in which high beams are overlapped with each other can be realized. Of course, the control unit 300 simultaneously controls the first driving unit 210 and the second driving unit 220 to raise the irradiation direction of the first light source unit 110 so that the low beam is superimposed on the high beam It is possible to realize a composite beam in which the high beams are superimposed on each other by swinging the irradiation direction of the second light source unit 120 inward. As a result, the light amount of the high beam, for example, DHB, can be reinforced by the low beam, and the light amount in the middle part of the front area of the vehicle can be further strengthened by overlapping a part of the high beam. As another example, in the second light source unit 120, a part of the DHB, which is a high beam, is superimposed on each other in a state in which the irradiation direction is partially overlapped, so that a separate device for driving the second light source unit 120 may not be needed have. That is, the beam irradiated from the second light source unit 120 can be always overlapped without the second drive unit 220. [ Thus, the first driving unit 210 level-ups the irradiation direction of the first light source unit 110 up and down, and the control unit 300 sets the low beam to the superimposed DHB The second light source unit on the left side and the second light source unit on the right side located on both sides of the front side of the vehicle control the first drive unit 210 so as to implement a composite beam by overlapping, So that a part of the high beams, that is, a part of the DHBs are overlapped with each other. That is, since the second light source unit 220 is in a state in which the irradiation direction is previously swiveled inward, a separate driving device is not required. Further, the second light source units 120 on the left and right sides are swiveled inward by 1 degree to the inside, so that some of the DHBs can overlap each other. That is, the LH and RH superimpositions shown in FIG. 5B are designed in advance, and the luminous intensity of the high beam is always higher than the non-overlapped portion in the overlapped portion. Therefore, the second light source unit 220 is in a state in which the irradiation direction is previously swiveled inward, and therefore, no separate drive device is required. That is, since the second drive unit 220 can be omitted, it is possible to obtain an effect such as cost reduction.

A specific embodiment of the composite beam pattern by the control unit 300 will be described later.

Fig. 3 is a view for explaining a split beam structure of a high beam formed by the composite beam implementing apparatus of the vehicle lamp of Fig. 2, Fig. 4 is a view showing a high beam irradiated on the road by the composite beam implementing apparatus of the vehicle lamp of Fig. Lt; / RTI >

Referring to FIG. 3, the second light source unit 120 having a plurality of light emitting diodes can form a divided beam by independently irradiating a plurality of light emitting diodes. That is, each light emitting diode that can be independently driven can form beam patterns in different regions. However, the light emitted from each LED element may not be clearly separated, and may be mixed with each other at the boundary portion of each light distribution area.

In FIG. 3, when the respective second light source units 120 of the left and right head lamps are provided with seven light emitting diodes, respectively, the divided beams irradiated independently are shown. The transverse direction axis represents an axis in the width direction in front of the vehicle, and the longitudinal direction axis represents an axis in the vertical direction in front of the vehicle. Since the plurality of light emitting diodes constituting the second light source unit 120 can be controlled independently of each other, the lighting and extinction states of the light emitting diodes may be different from each other due to the control signal.

3, in forming a light distribution pattern by a plurality of light emitting diodes, some light emitting diodes are turned on to form the light shining portion 31, and the remaining light emitting diodes are turned off to form the arm portion 32, . The light-directing section 31 and the arm section 32 may be disposed independently of each other. That is, they may be disposed adjacent to each other, or may be disposed to cross each other. Thus, when a front object is sensed and a control signal is transmitted, light emitting diodes illuminating a spot corresponding to the object can be individually turned on or off. Accordingly, the second light source unit 120 can implement dynamic upward light, that is, Dynamic High Beam (DHB).

Referring to FIG. 4, there is shown a state in which the opposing vehicle V2 is positioned forward of the reference vehicle V1 in the running state. In such a situation, when the driver turns on the high beam in the DHB mode, the position of the opposing vehicle V2 in front is calculated using the camera of the reference vehicle V1 or the like, the light emitting diode for irradiating the corresponding position is turned off, The arm portion 32 can be formed. Since no other vehicle or pedestrian exists in the other positions, the light-emitting section 31 can be constituted by maintaining the lighting state of the light-emitting diode. The beam pattern modified by the DHB mode constitutes a part of the high beam. In the case of the low beam pattern 40, the beam pattern does not cause glare to the front vehicle, so it can be kept the same regardless of the position of the front vehicle. A method of recognizing an opposing vehicle will be described later in detail.

Fig. 5A is a view showing a general beam pattern in the absence of an opponent vehicle, and Fig. 5B is a view showing a beam pattern formed by the composite beam implementing apparatus of the vehicle lamp of Fig. 2 in the absence of an opponent vehicle.

5A, five LED elements are provided in each of the second light source units 120 of the right and left headlamps, so that the high beam can be divided into 10 regions and illuminated in front of the vehicle. A low-beam light distribution pattern is generated by the first light source unit 110 under the high beam.

5B, the control unit 300 simultaneously controls the first driving unit 210 and the second driving unit 220 to level up the irradiation direction of the first light source unit 110 The low beam is superimposed on the high beam and the irradiation direction of the second light source unit 120 located in the right and left lamps is swiveled inward to realize a composite beam in which the high beams are overlapped with each other. For example, the control unit 300 controls the first driving unit 210 to raise the irradiating direction of the first light source unit 110 by 1 degree, and at the same time controls the second driving unit 220, The composite beam can be realized by sweeping the irradiation direction of the light source unit 120 inwardly by 1 degree.

As a result, the amount of light of the high beam can be reinforced by the low beam, and the amount of light in the middle part of the front area of the vehicle can be further strengthened by superimposing a part of the high beam on each other. Thus, the reduction in the module size and the reduction in the number of parts can be achieved by irradiating a part of the low beam and the high beam with the role of the short distance irradiation with only the divided high beam.

Fig. 6 is a view showing recognition of an opponent vehicle by the composite beam implementing apparatus of the vehicle lamp of Fig. 2;

Referring to FIG. 6, a composite beam implementing apparatus for a vehicle lamp may further include a recognition unit 400 for recognizing an opponent vehicle, and the recognition unit 400 is preferably installed in front of the vehicle. Here, the recognition unit 400 may be a camera, a recognition sensor, or the like.

For example, when the camera installed in the vehicle is used as the recognition unit 400, the image obtained from the camera is analyzed to recognize the opposing vehicle. For example, a region of interest may be set at a position defined in the acquired image, and a portion having a specific brightness or more in the region of interest may be detected to determine whether the vehicle is an opposing vehicle. Here, a CCD (Charge Coupled Device) module or a CMOS (Complementary Metal Oxide Semiconductor) module can be used as an imaging device, and the acquired image can be converted into a compressed format in which the image is compressed to facilitate data transfer. The image data in the form of a compressed format may have various formats such as MPEG (Moving Picture Experts Group) -1 or MPEG-4. In addition, in order to accurately identify a person at night, infrared rays generated from a subject at night can be captured through an infrared sensor module to obtain an accurate image.

Thus, when the counter vehicle is recognized by the recognition unit 400, the high beam can be automatically turned off. Further, when the opponent vehicle is not recognized, it is possible to enhance the visibility of the remote beam by reinforcing the light amount of the high beam by superimposing the low beam and / or superimposing a part of the high beam after turning on the high beam.

FIG. 7 is a diagram showing a comparison of light distribution patterns irradiated on the road according to whether or not the composite beam implementing apparatus of the vehicle lamp of FIG. 2 is applied.

The light distribution pattern shown on the left corresponds to the case where a composite beam is not formed. The light distribution pattern shown on the right corresponds to a case in which the low beam is leveled up and the divided beams caused by the light emitting diodes located inside the high beam are swapped inward with respect to each other. It can be seen that the wide width is realized by implementing the composite beam by level-up of the low beam and swivel of the high beam. Therefore, by implementing the composite beam by leveling up the low beam and / or swiveling the high beam, it is possible to widen the forward view of the driver at night, thereby reducing the probability of occurrence of a safety accident.

8 is a block diagram showing a configuration of an apparatus for implementing a composite beam of a vehicle lamp according to another embodiment of the present invention.

8, an apparatus for implementing a composite beam of a lamp for a vehicle according to another embodiment of the present invention includes a plurality of first light source units for irradiating a first pattern and at least one second light source unit for irradiating a second pattern The driving unit 520 for driving the first light source unit and the second light source unit, and the driving unit 520 for implementing the third pattern in which the first pattern is superimposed on the second pattern, (Not shown). In addition, the composite beam implementing apparatus for a vehicle lamp according to another embodiment of the present invention may further include a recognition unit 540 that recognizes an opposing vehicle.

Hereinafter, the case where the first pattern is a low beam and the second pattern is a high beam will be described as an example. If it is determined by the recognizing unit 540 that the opposing vehicle does not exist, the control unit 530 determines whether the vehicle is in a high- And irradiates the beam and controls the driving unit 520 to swing the irradiation direction of the second light source unit to realize a composite beam in which a part of the high beam is overlapped with each other. That is, a fourth pattern in which the second patterns are superimposed on each other can be formed. If it is determined by the recognition unit 540 that the vehicle does not exist, the control unit 530 controls the driving unit 520 to raise the irradiation direction of the first light source unit So that a portion of the low beam is superimposed on the high beam. That is, a third pattern in which the first pattern is superimposed on the second pattern can be formed. As described above, when it is determined that there is no opponent vehicle, the high beam is irradiated and the irradiation direction of the second light source unit is swiveled so that a part of the high beam is overlapped with each other, It is also possible to implement a composite beam in which a part of the low beam is superimposed on the high beam. That is, a fifth pattern in which the first pattern is superimposed on the fourth pattern in which the second patterns are superimposed on each other may be formed.

At this time, without performing all the operations of leveling up the irradiation direction of the first light source unit up and down and swiveling the irradiation direction of the second light source unit to the left and right, It may be designed not to perform the operation of level up-down the irradiation direction of the second light source unit and to swivel the irradiation direction of the second light source unit to the left and right, same. That is, as described above, when the LH and RH superimpositions shown in FIG. 5B are designed in advance, the luminous intensity of the high beam is always higher than the non-overlapped portion in the overlapped portion.

9 is a flowchart of a method for implementing a composite beam of a vehicle lamp according to an embodiment of the present invention.

Whether or not the upward light is turned on or not is determined depending on the presence in the opposing vehicle. That is, after recognizing the opposing vehicle, if the opposing vehicle does not exist, the second pattern may be inspected, and the third pattern may be formed by superimposing the first pattern on the second pattern. At this time, the second pattern may be a high beam, and the first pattern may be a low beam that can be superimposed on the high beam. Of course, those skilled in the art will appreciate that the first pattern and the second pattern can be different beam patterns. Hereinafter, the case where the first pattern is the low beam and the second pattern is the high beam will be described as an example.

For example, in FIG. 9, a composite beam implementation method for a vehicle lamp according to an embodiment of the present invention recognizes an opposing vehicle (S910), and when the opposing vehicle does not exist (No at S920) (S930). Then, another beam is superimposed on the high beam to realize a composite beam (S940). Here, if the counter vehicle exists (S920, Yes), there is a high possibility that a driver of the opposite vehicle causes glare and the vehicle can not be temporarily controlled, resulting in a vehicle accident. Therefore, In particular, as described above, when the composite beam is implemented (S940), the high beam irradiated from both sides of the front side of the vehicle is swiveled inward, and the low beam is irradiated upward The level of the high beam is increased to sufficiently secure the field of view of the driver. In this case, it is possible to increase the light amount of the high beam without adding a spot beam to the high beam, thereby eliminating the need for a module for irradiating the spot beam. .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Vehicle lamp
110: first light source unit
120: a second light source unit
210: a first drive unit
220: second drive unit
300: control unit
400: recognition unit

Claims (14)

A first light source unit for irradiating a low beam;
At least one second light source unit including a plurality of light emitting diodes, the plurality of light emitting diodes independently irradiating a beam to form a divided beam;
A first driving unit for driving the first light source unit up and down;
A second driving unit for driving the second light source unit to the left and right; And
The control unit controls the first driving unit to level-up the irradiation direction of the first light source unit so that the low beam implements a high beam superimposed on the divided beam, And a control unit for controlling the second driving unit so as to swivel the irradiation directions of the two light source units inwardly to overlap each of the divided beams with each other to realize a high beam. delete delete delete delete delete The method according to claim 1,
Further comprising a recognition unit for recognizing an opposing vehicle. 8. The method of claim 7,
Wherein the recognition unit is one of a camera or a sensor. delete delete delete delete Recognizing an opposing vehicle;
If the counter vehicle does not exist, swinging each of the left and right split beams irradiated from both sides of the front side of the vehicle, inward to overlap the left and right split beams with each other; And
And raising the low beam to an upper level to form a high beam in which the leveled up low beam is superimposed on the superposed left and right split beams.
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