KR20170027388A

KR20170027388A - ADB type head lamp for vehicle

Info

Publication number: KR20170027388A
Application number: KR1020150123934A
Authority: KR
Inventors: 손영호; 고동진
Original assignee: 주식회사 에스엘라이팅
Priority date: 2015-09-02
Filing date: 2015-09-02
Publication date: 2017-03-10
Also published as: KR101959799B1

Abstract

The present invention relates to an adaptive headlamp for a vehicle, the adaptive headlamp comprising: a plurality of light sources; A plurality of light guides arranged in a light emitting direction of the light source and irradiating the light forward while refracting the light emitted from the light source; And a light mixing part for mixing the light in a predetermined area; And a lens that transmits light that has passed through the light mixing part of the collective lens and is mixed with each other in a predetermined area to the outside.

Description

[0001] The present invention relates to an adaptive headlamp for a vehicle,

The present invention relates to an adaptive headlamp for a vehicle, and more particularly, to an adaptive headlamp for a vehicle, and more particularly, to an adaptive headlamp for a vehicle, in which, among light beams emitted from a plurality of light sources and irradiated to the outside, And more particularly, to an adaptive headlamp for a vehicle capable of forming a uniform and smooth beam pattern without the necessity of forming a uniform beam pattern.

2. Description of the Related Art Generally, a vehicle has various types of lamps having a lighting function for easily confirming an object located in the vicinity of the vehicle at nighttime, and a signal function for notifying other vehicles or road users of the running state of the vehicle.

For example, a head lamp and a fog lamp, which are mainly used for a lighting function function, a turn signal lamp, a tail lamp, a brake lamp, Lamps (Brake lamp), side markers (side markers), and the like. These lamps are regulated by the laws and regulations for their installation standards and specifications so that each function can be fully utilized.

Among the lamps for a vehicle, the headlamp forms a low beam pattern or a high beam pattern so as to ensure the driver's front view when the vehicle is traveling in a dark environment such as at night, and plays a very important role in safety operation .

Such a headlamp is required to maintain a low beam pattern in normal operation so as to prevent the driver of the opposed vehicle traveling in the opposite direction or the driver of the preceding vehicle from being glare-induced in normal operation, A high beam pattern is formed in accordance with the present invention to ensure safe operation.

However, there is a case where a high beam pattern is formed in a state in which the opposite vehicle or the preceding vehicle can not be recognized. In such a case, there is a problem in that safety accidents are caused by causing glare to the opposite vehicle driver or the lead vehicle driver.

Accordingly, in recent years, when a vehicle or a preceding vehicle is detected while driving in a state in which a high beam pattern is formed, the angle of light illumination, brightness, width, and length of the lamp are automatically adjusted so that the opponent vehicle or the lead- An adaptive driving beam (ADB) headlamp, that is, an adaptive headlamp is provided.

The adaptive headlamp is a dynamic type in which a dark zone is formed in a space where the opposing vehicle or the preceding vehicle is located by changing the angle of the ramp by the swivel actuator when the opposing vehicle or the preceding vehicle is sensed. And a matrix type in which a light block is formed in a space in which the opposing vehicle or the preceding vehicle is located by selectively turning on or off a plurality of light sources.

Here, in the case of the adaptive headlamp of the matrix type, a plurality of light sources are closely arranged so that the beam patterns formed by the lights emitted from the respective light sources are spaced apart from each other so as not to form a dark zone, It causes rise.

That is, as the plurality of light sources are densely arranged so that the beam patterns of the light beams emitted from the adjacent light sources are not spaced from each other, the number of light sources increases, thereby increasing the manufacturing cost, By selectively turning on or off the light sources, energy consumption is also great.

Korean Patent Publication No. 2015-0052638

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and an apparatus for correcting beam patterns, which are emitted from a plurality of light sources, So as to prevent the occurrence of cancer stagnation.

In particular, the technical problem to be solved by the present invention is to provide an adaptive headlamp for a vehicle in which a beam pattern adjacent to each other is overlapped with a certain area so as to form a uniform and smooth beam pattern without generation of a dark zone between beam patterns .

The problems of the present invention are not limited to the above-mentioned problems, and other problems 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 adaptive headlamp for a vehicle, comprising: a plurality of light sources; A plurality of light guides arranged in a light emitting direction of the light source and irradiating the light forward while refracting the light emitted from the light source; And a light mixing part for mixing the light in a predetermined area; And a lens that transmits light that has passed through the light mixing portion of the collective lens and mixed with each other in a predetermined region to the outside.

In this case, in the above-mentioned aggregate lens, the light guide and the light mixing section may be integrated.

Here, the light guides are provided in a number corresponding to the number of the light sources, respectively, and an incident surface is formed on one side, and one outgoing surface may be formed in the light mixing portion.

It is preferable that the width of the light guide located on the outboard side is larger than the width of the light guide located on the inboard side of the vehicle.

On the other hand, the light guide may gradually increase in width from the light guide located on the inboard side of the vehicle to the outboard side light guide.

Further, the lens may be an aspherical lens.

On the other hand, the focus of the lens and the focus of the collective lens may be defocused.

Also, it is preferable that at least a part of the beam patterns adjacent to each other among the beam patterns formed by the light emitted from the light source are overlapped.

In this case, among the beam patterns formed by the light emitted from the light source, adjacent beam patterns may be overlapped by at least 50% or more.

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

According to the adaptive headlamp for a vehicle according to the embodiment of the present invention, among beam patterns irradiated to the outside by light emitted from a plurality of light sources, beam patterns adjacent to each other are superimposed on a certain region, An effect of preventing cancer stasis can be provided.

Particularly, since adjacent beam patterns overlap each other in a certain area, it is possible to provide a uniform and smooth beam pattern without occurrence of a dark spot between the beam patterns.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a schematic view showing a road surface light pattern of an adaptive headlamp for a vehicle according to an embodiment of the present invention;
2 is a schematic view showing a beam pattern formed by an applicable headlamp for a vehicle according to an embodiment of the present invention;
Fig. 3 is a schematic view showing a state in which a beam block is formed in the beam pattern by the opposing vehicle or the preceding vehicle in Fig. 2; Fig.
4 is a schematic configuration diagram of an adaptive headlamp for a vehicle according to an embodiment of the present invention;
5 and 6 are schematic views showing a state in which beam patterns formed by light emitted from the light sources by the adaptive headlamp for a vehicle according to the embodiment of the present invention are superimposed.

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 being 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 concept 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.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. In addition, in the drawings of the present invention, each component may be somewhat enlarged or reduced in view of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of an adaptive headlamp for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a road surface light pattern of an adaptive headlamp for a vehicle according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a beam pattern formed by an applicable headlamp for a vehicle according to an embodiment of the present invention. to be.

Fig. 3 is a schematic view showing a state in which a shadow bar is formed in the beam pattern by the opposed vehicle or the preceding vehicle in Fig. 2. Fig.

1 and 2, an adaptive headlamp 100 for a vehicle according to an embodiment of the present invention includes a low beam pattern P10 for securing a long distance view during driving of the vehicle V1, The high beam pattern P20 (P21, P22) can be formed at the same time.

The adaptive headlamp 100 for a vehicle is configured to change a lamp angle by a swivel actuator when a counter vehicle or a preceding vehicle is sensed so that a dark zone is formed in a space where the opposite vehicle or the preceding vehicle is located A dynamic type and a matrix type in which a light block is formed in a space where the opposing vehicle or the preceding vehicle is located by selectively turning on or off the plurality of light sources 200. [

The adaptive headlamp 100 for a vehicle according to the embodiment of the present invention will be described with an adaptive headlamp of a matrix type among the above two types.

As shown in Figs. 1 to 3, the adaptive headlamp 100 of the matrix type has a structure in which a high beam pattern P20 is formed simultaneously with the low beam pattern P10 while the vehicle is running, When the vehicle or the preceding vehicle is sensed, some of the beam patterns irradiated to the area where the opposing vehicle or the preceding vehicle is located can be removed to form the dark stage D.

That is, the headlamp 100 of the matrix type has a plurality of light sources 200, and a plurality of beam patterns of light emitted from the plurality of light sources 200 form a high beam pattern P20 become.

In this case, when the camera photographs the front side in real time while driving the vehicle and the sensing unit senses the position of the opposite vehicle or the preceding vehicle by the photographed image, the control unit detects the position of the opposite side of the plurality of light sources 200 , It is possible to form the dark streak D by removing some of the beam patterns irradiated to the area where the opposing vehicle or the preceding vehicle is located while selectively lighting and partially lighting the light sources.

Accordingly, when the driver does not have the opposite vehicle or the preceding vehicle ahead, the driver can travel in a state in which the high beam pattern P20 and the low beam pattern P10 secure the far field of view, In the case where the opposite vehicle or the preceding vehicle is sensed while driving, as shown in Fig. 3, a part of the beam pattern of the area where the opposing vehicle or the preceding vehicle is located is removed from the high beam pattern, By preventing the occurrence of the failure, the safe driving can be achieved.

FIG. 4 is a schematic configuration diagram of an adaptive headlamp for a vehicle according to an embodiment of the present invention. FIG. 5 and FIG. 6 are diagrams for explaining an adaptive headlamp for a vehicle according to an embodiment of the present invention by means of light emitted from light sources Is a schematic view showing a state in which beam patterns to be formed are superimposed.

4, the adaptive headlamp 100 for a vehicle according to an embodiment of the present invention includes a plurality of light sources 200 arranged in a predetermined arrangement, a plurality of light beams emitted from a plurality of light sources 200, And a lens 400 for transmitting the light passing through the collective lens 300 to the outside.

The light source 200 emits light by an energization signal, and is preferably a light emitting diode (LED), which is a semiconductor light emitting element. However, the light source 200 is not limited thereto and may be a variety of light sources such as a bulb, Type light source 200 may be applied.

The collective lens 300 includes a plurality of light guides 310 disposed in the light emitting direction of the light source 200 and irradiating the light emitted from the light source 200 forward while refracting the light emitted from the light source 200, And a light mixing part 320 formed to have a predetermined thickness and mixing the light beams passing through the light guides 310 adjacent to each other by a certain amount.

The light guide 310 of the collective lens 300 has an incident surface 312 formed on one surface thereof and light emitted from each of the light sources 200 is incident on the incident surfaces 312.

Accordingly, the number of the light guides 310 corresponding to the number of the light sources 200 is provided.

In the drawings for supporting the adaptive headlamp 100 for a vehicle according to the embodiment of the present invention, it is shown that all of the light sources 200 are ten, so that the light guide 310 of the collective lens 300 The number of the light guides 200 is not limited to the number of the light guides 310 of the collective lens 300 if the number of the light guides 310 is the same.

The light guide 310 of the collective lens 300 is formed to extend from the incident surface 312 by a predetermined distance so that the side surface may be inclined so as to gradually widen the distance from the incident surface 312 have.

Therefore, when the light emitted from the light source 200 is incident on the incident surface 312 of the light guide 310, the incident light is refracted while being reflected by the side surface of the light guide 310, Passage is made while spreading.

The light having passed through each light guide 310 passes through the light mixing part 320 and is emitted through the light exiting surface 322 of the collective lens 300 in a state where the light is mixed with the adjacent light in a certain area, The beam patterns P 1 to P 10 transmitted through the lens 400 are overlapped with each other by a predetermined area to form the overlapping area R as shown in FIGS.

The beam patterns emitted from the 10 light sources 200 and transmitted through the collective lens 300 and the lens 400 are all 10 beams As an example.

The light emitted from the first light source passes through the light guide 310 corresponding to the first light source and passes through the exit surface 322 And the light emitted from the second light source passes through the light guide 310 corresponding to the second light source and exits through the exit surface 322. [

At this time, the lights emitted from the first light source and the second light source pass through the light guides 310 corresponding to each other, and a part of the light is mixed while passing through the light mixing part 320 continuously.

That is, the light beams incident on the light guides 310 are reflected by the inclined side portions and are continuously refracted, so that light is gradually diffused. The light beams thus spread are transmitted through the light mixing portion 320 As a result, the light emitted from the first light source and the light emitted from the second light source are mixed in the light mixing unit 320, The beam pattern P having some overlapping areas is formed as shown in FIGS. 5 and 6.

At this time, the beams emitted from the second light source, the third light source through the ninth light source, and the tenth light source also form a beam pattern P having some overlapping regions R for the above reason.

Accordingly, the light beams emitted from the adjacent light sources 200 form a beam pattern P having a superimposed area R in which some areas overlap, so that the light sources 200 are not arranged densely as conventionally It is possible to form a high beam pattern in a set range even if the beams are arranged at a constant spacing.

That is, the light emitted from any one of the light sources can pass through the light guide 310 and the light mixing portion 320 continuously, and a broader range of beam patterns can be formed, So that a smaller number of light sources 200 can be applied. As a result, the number of parts can be reduced, resulting in lower production costs.

Particularly, in a state in which a smaller number of light sources 200 are applied while widening the arrangement interval of the light sources 200 as described above, the lights emitted from the adjacent light sources 200 are mixed in a certain region, By forming the region R, it is possible to prevent the occurrence of dark shadows between the beam patterns P even with a small number of the light sources 200.

In addition, the light beams emitted from the adjacent light sources 200 are mixed in a certain region to form the overlap region R in the beam pattern P, so that a uniform and smooth beam pattern as a whole can be formed.

Meanwhile, the light guides 310 constituting the collective lens 300 and the light mixing unit 320 may be provided integrally. At this time, one outgoing surface 322 is formed on one surface of the light mixing part 320, and one outgoing surface 322 is formed in a state where lights passing through the respective light guides 310 are mixed in certain areas. .

As described above, light mixed in a certain region is emitted through the exit surface 322 formed on one surface of the light mixing portion 320 of the collective lens 300. When the emitted light passes through the lens 400, As shown in Fig. 6, a beam pattern P having an overlapping area R overlapping by a predetermined area is formed.

At this time, it is preferable that at least 50% or more of the overlapping regions R are formed in the beam patterns P irradiated to the outside by the adjacent light beams.

For example, a first beam pattern formed by the first light source and a second beam pattern formed by the second light source allow the overlap region to be formed by 50% or more of each other.

The exit surface 322 of the collective lens 300 can follow the surface characteristics of a spherical lens, an aspheric lens, a preform lens and the like, The overlapping range of the adjacent beam patterns P and the sharpness of the beam patterns may vary.

4, the focus of the condenser lens 300 and the focus of the lens 400 are spaced apart from each other by a predetermined distance to be defocused with respect to each other, can do.

When the focal point of the collective lens 300 and the focal point of the lens 400 are defocused as described above, the beam patterns P emitted from the respective light sources 200 and irradiated to the outside are not focused, So that the boundary of the beam patterns partially overlapped with each other becomes unclear and slightly blurred, so that the overall beam patterns can be more uniformly and smoothly irradiated.

It is preferable that the width of the light guide located on the outboard side of the light guide 310 of the collective lens 300 is larger than that of the light guide positioned on the inboard side of the vehicle Do.

The reason for this is that the light guides located on the inboard side are relatively small in width, the beam pattern formed by the light beams passing through the inboard light guide has a large light intensity to increase the light intensity, The guides are relatively large in width, and the beam pattern formed by the light beams passing through the outboard light guide is to increase the width.

In other words, the beam pattern on the inboard side improves the visibility of the driver by improving the brightness, while the beam pattern on the outboard side expands the width of the light instead of reducing the brightness, thereby widening the visibility of the driver to a wider range.

For reference, only one collective lens 300 is shown in the drawings for supporting the embodiment of the present invention. The width of the light guide located at the center side is relatively narrow and the width of the light guide located at the side is However, considering that the vehicle headlamp 100 is disposed on both sides of the vehicle headlamp 100, it is preferable that one of the light guides has a relatively wide width And the other light guide may be understood to be relatively wide.

For example, when the adaptive headlamp 100 for a vehicle shown in Fig. 4 is a headlamp disposed on the right side with respect to the traveling direction of the vehicle, the width of the light guide on the left side is relatively narrow, The light guide width may be relatively wide.

Further, in the case of a headlamp disposed on the left side relative to the traveling direction of the vehicle, the width of the light guide on the right side may be relatively narrow and the width of the light guide on the left side may be relatively wide.

In this case, the plurality of light guides 310 may be formed to have the same width as the set number of the inboard side, be formed to have the same width as the set number of the outboard side and have different widths, The width of the light guide may gradually increase from the light guide to the outboard light guide.

On the other hand, the lens 400 may be an aspherical lens that irradiates the light passing through the collective lens 300 and externally irradiates the light in the straight state by refraction of light.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Adaptive headlamp for a vehicle 200: Light source
300: Lens 310: Light guide
312: incident surface 320: light mixing portion
322: exit surface 400: lens
P10: Low beam pattern P20: High beam pattern
P (P1 to P10): Beam pattern R: Overlap area

Claims

A plurality of light sources;
A plurality of light guides arranged in a light emitting direction of the light source and irradiating the light forward while refracting the light emitted from the light source; And a light mixing part for mixing the light in a predetermined area; And
And a lens which passes through the light mixing part of the collective lens and transmits the mixed light in a certain region to each other to the outside.

The method according to claim 1,
In the collective lens,
Wherein the light guide and the light mixing portion are integral with each other.

The method according to claim 1,
The light guide
The number of light sources corresponding to the number of the light sources,
And one outgoing surface is formed in the light mixing portion.

The method according to claim 1,
Among the light guides,
The width of the light guide located on the outboard side is relatively larger than the width of the light guide located on the inboard side of the vehicle.

The method according to claim 1,
The light guide
The adaptive headlamp for a vehicle which gradually increases in width from the light guide located on the inboard side of the vehicle to the outboard side light guide.

The method according to claim 1,
Wherein the lens is an aspherical lens.

The method according to claim 1,
Wherein the focal point of the lens and the focal point of the collective lens are defocused.

The method according to claim 1,
Wherein at least a portion of the beam patterns adjacent to each other among the beam patterns formed by the lights emitted from the light source overlap each other.

9. The method of claim 8,
Wherein at least 50% of the beam patterns adjacent to each other among the beam patterns formed by the light emitted from the light source are overlaid.