KR20160140246A - Head HAmp for vehicle - Google Patents

Abstract

The present invention provides a light source module comprising: a first light source module for illuminating a plurality of unit beam patterns individually flashable in front of a vehicle to form a first light distribution pattern; And a plurality of second light source modules for forming a second light distribution pattern by irradiating light toward the front of the vehicle, wherein the first light source module and the second light source module include a plurality of light sources for emitting light; And a lens for irradiating light emitted from the plurality of light sources to the front of the vehicle, wherein the lens has: an incident surface on which light emitted from the plurality of light sources is incident; A first reflecting surface that forms part of a front surface of the lens and reflects light incident into the lens through the incident surface to the rear side of the lens; An emergent surface forming a part of a front surface of the lens; And a second reflecting surface that forms at least a part of the rear surface of the lens and reflects the light reflected by the first reflecting surface toward the emitting surface.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a headlamp for a vehicle, and more particularly to a headlamp for a vehicle that provides illumination to the front of a vehicle.

2. Description of the Related Art [0002] Generally, a vehicle is provided with a variety of vehicle lamps having a lighting function for easily confirming an object located in the vicinity of the vehicle at nighttime, and a signal function for informing other users or road users of the running state of the vehicle.

Among the lamps mounted on the vehicle, the headlamp is a lamp including a function of securing the front view of the driver at nighttime driving, and generally includes a low beam (downward beam) irradiated near the front of the vehicle and a low beam It is equipped with a function to simultaneously or separately irradiate high beams (upward beams) irradiated to a long distance.

In the driver's viewpoint, it is the safest way to operate the vehicle because it is possible to simultaneously observe the driver's view of the near and far parts of the vehicle in front of the vehicle by simultaneously scanning the low beam and the high beam. However, It causes the glare of the pedestrian to be dangerous to prevent the visibility during the time required for the adaptation and the dark adaptation.

However, repeating the ON / OFF operation of the high beam by continuously checking the counter vehicle or pedestrian, etc., also hinders the safety of the vehicle operation, and the driver feels considerable inconvenience.

By complementing this, it is possible to automatically turn ON / OFF the high beams according to the presence or absence of the opponent vehicle and / or the preceding vehicle, or to control the irradiation angle and / or brightness of the low beam / high beam according to the road situation (street, highway, A driver assist system such as a driver assist system has been developed and commercialized.

Recently, an adaptive vehicle which detects an opposing vehicle, a preceding vehicle, a pedestrian, etc. from a video image in front of the vehicle and changes a lamp irradiation angle so that a high beam is not irradiated or a light source is turned off so that a detected vehicle, a pedestrian, It is evolving into an adaptive drive beam (ADB) technology.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a headlamp for a vehicle that emits a predetermined beam pattern toward the front of a vehicle without using a separate reflector.

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 a vehicular headlamp comprising: a first light source module for irradiating a plurality of unit beam patterns individually blinkable in front of a vehicle to form a first light distribution pattern; And a plurality of second light source modules for forming a second light distribution pattern by irradiating light toward the front of the vehicle, wherein the first light source module and the second light source module include a plurality of light sources for emitting light; And a lens for irradiating light emitted from the plurality of light sources to the front of the vehicle, wherein the lens has: an incident surface on which light emitted from the plurality of light sources is incident; A first reflecting surface that forms part of a front surface of the lens and reflects light incident into the lens through the incident surface to the rear side of the lens; An emergent surface forming a part of a front surface of the lens; And a second reflecting surface which forms at least a part of the rear surface of the lens and reflects the light reflected by the first reflecting surface toward the emitting surface.

In some embodiments, the first light distribution pattern may be irradiated on the upper side of the cut-off line, and the second light distribution pattern may be irradiated on the lower side of the cut-off line.

In some embodiments, the plurality of light sources of the first light source module include a plurality of first group light sources and a plurality of second group light sources that emit light, and the lenses of the first light source module include a plurality of A first lens that forms a first beam pattern by irradiating light emitted from the first group of light sources toward the front of the vehicle; and a second lens that irradiates light emitted from the plurality of second group light sources forward of the vehicle, And a second lens for forming the second lens.

In some embodiments, the second beam pattern may be formed in close proximity of the vehicle relative to the first beam pattern.

In some embodiments, the second beam pattern may be eccentric in either the right or left direction relative to the first beam pattern.

In some embodiments, some of the light emitted from the plurality of first group light sources passes through the entrance surface of the first lens and is reflected by the first reflection surface of the first lens, And the other part of the light emitted from the plurality of first group light sources passes through the entrance surface of the first lens and is reflected by the second reflection surface, The first lens may be totally reflected by the exit surface of the first lens, reflected by the second reflection surface of the first lens, and emitted from the first lens through the exit surface of the first lens.

In some embodiments, some of the light emitted from the plurality of second group light sources passes through the incident surface of the second lens, is reflected by the first reflection surface of the second lens, And the other part of the light emitted from the plurality of first group light sources passes through the incident surface of the second lens, and the other part of the light is reflected by the second reflection surface and is emitted from the second lens through the exit surface of the second lens. Is reflected by the second reflection surface of the second lens and is emitted from the second lens through the exit surface of the second lens after being totally reflected by the exit surface of the second lens.

In some embodiments, the lens of the second light source module includes a third lens and a fourth lens, and the plurality of light sources of the second light source module include a plurality of light sources that emit light toward the third lens, The third lens group includes a third group of light sources and a plurality of fourth group light sources toward the fourth lens, wherein the third lens irradiates light emitted from the plurality of third group light sources toward the front of the vehicle, And the fourth lens may form a fourth beam pattern that at least partially overlaps with the third beam pattern by irradiating light emitted from the plurality of fourth group light sources forward of the vehicle.

In some embodiments, the third beam pattern may be formed at a distance of the vehicle relative to the fourth beam pattern.

In some embodiments, the distance between the upper end and the lower end of the second reflecting surface of the third lens may be larger than the distance between the upper end and the lower end of the second reflecting surface of the fourth lens.

In some embodiments, at least one of the exit surface of the third lens and the exit surface of the fourth lens may be formed in a plane.

In some embodiments, the second light source module includes a plurality of fifth group light sources for emitting light; And a fifth lens for irradiating light emitted from the plurality of fifth group light sources to form a fifth beam pattern, wherein at least a part of the fifth beam pattern is a part of the third beam pattern and the fourth beam Pattern. ≪ / RTI >

In some embodiments, the third beam pattern is formed at a remote location of the vehicle relative to the fifth beam pattern, and the fourth beam pattern may be formed at a location closer to the vehicle than the fifth beam pattern have.

In some embodiments, the third beam pattern is formed at a distance of the vehicle relative to the fifth beam pattern, and wherein one of the fourth beam pattern and the fifth beam pattern is formed at a distance from the third beam pattern And the other of the fourth beam pattern and the fifth beam pattern is eccentric to the left in the third beam pattern.

In some embodiments, some of the light emitted from the plurality of third group light sources passes through the entrance surface of the third lens and is reflected by the first reflection surface of the third lens, And the other part of the light emitted from the plurality of third group light sources passes through the entrance surface of the third lens and is reflected by the second reflection surface and is emitted from the third lens through the exit surface of the third lens, After being totally reflected by the exit surface of the third lens, may be reflected by the second reflection surface of the third lens and emitted from the third lens through the exit surface of the third lens.

In some embodiments, some of the light emitted from the plurality of fourth group light sources passes through the incident surface of the fourth lens, is reflected by the first reflection surface of the fourth lens, And the other part of the light emitted from the plurality of fourth group light sources passes through the incident surface of the fourth lens and is reflected by the second reflection surface and is emitted from the fourth lens through the exit surface of the fourth lens, After being totally reflected by the exit surface of the fourth lens, reflected by the second reflection surface of the fourth lens and emitted from the fourth lens through the exit surface of the fourth lens.

The details of other embodiments are included in the detailed description and drawings.

The vehicle headlamp of the present invention has one or more of the following effects.

The beam pattern can be irradiated to the front of the vehicle without using a separate reflector.

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

1 is a plan view schematically showing a part of a headlamp for a vehicle according to an embodiment of the present invention and a beam pattern emitted by a vehicle headlamp according to an embodiment of the present invention.
FIG. 2 is a side view schematically showing a part of a headlamp for a vehicle according to an embodiment of the present invention and a beam pattern emitted by a vehicle headlamp according to an embodiment of the present invention.
3 is a perspective view showing the first lens of FIG.
Fig. 4 is a longitudinal sectional view of the lens of Fig. 3; Fig.
Figure 5 is a cross-sectional view of the lens of Figure 3;
6 is a cross-sectional view of a first lens according to another embodiment of the present invention.
7 is a schematic view illustrating a correspondence relationship between a plurality of unit beam patterns formed by the first lens and the first group of light sources and the first group of light sources according to an embodiment of the present invention.
8 is a view schematically showing a correspondence relationship between a plurality of unit beam patterns formed by the second lens and the second group light sources and a second group light source according to an embodiment of the present invention.
9 is a view showing a state in which a part of a plurality of unit beam patterns formed by the first lens and the first group light sources according to the embodiment of the present invention is turned off according to the appearance position of the opponent vehicle.
10 is a view showing a state in which a part of a plurality of unit beam patterns formed by the second lens group and the second group light sources according to the embodiment of the present invention is turned off according to the appearance position of the opponent vehicle.
11 is a side view schematically showing a part of a configuration of a second light source module of a vehicle headlamp according to an embodiment of the present invention.
12 is a longitudinal sectional view showing a second light source module of a vehicle headlamp according to an embodiment of the present invention.
FIG. 13 is a view schematically showing a plurality of third group light sources and shields in FIG. 12; FIG.
14 is a view showing a low beam pattern formed in a second light source module of a vehicle headlamp according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with 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. To fully disclose 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 INVENTION Hereinafter, the present invention will be described with reference to the drawings for explaining a headlamp for a vehicle according to embodiments of the present invention.

FIG. 1 is a view schematically showing a part of a headlamp for a vehicle according to an embodiment of the present invention and a beam pattern emitted by a vehicle headlamp according to an embodiment of the present invention. FIG. 2 is a side view schematically showing a part of a headlamp for a vehicle according to an embodiment of the present invention and a beam pattern emitted by a vehicle headlamp according to an embodiment of the present invention.

1 and 2, a vehicle headlamp 1 according to an embodiment of the present invention includes a first light source module and a second light source module.

The first light source module irradiates a plurality of unit beam patterns which are individually flashed in front of the vehicle to form a first light distribution pattern. Further, the second light source module irradiates light toward the front of the vehicle to form a second light distribution pattern.

In one embodiment of the present invention, the first light distribution pattern is formed of a high beam pattern irradiated on the upper side of the cut-off line, and the second light distribution pattern is formed of a low beam pattern irradiated on the lower side of the cut-off line ).

The first light source module and the second light source module include a plurality of light sources for emitting light and a lens for irradiating light emitted from the plurality of light sources toward the front of the vehicle.

Each lens of the first light source module and the second light source module forms an incident surface on which light emitted from a plurality of light sources is incident and a part of the front surface of the lens, And a second reflecting surface which forms at least a part of the rear surface of the lens and reflects the light reflected by the first reflecting surface toward the emitting surface, .

1, a first light source module of a vehicle headlamp 1 according to an embodiment of the present invention includes a first lens 10, a plurality of first group light sources 20 (21 to 25) A second lens 30, a plurality of second group light sources 40 (41 to 45), and a controller 50.

The plurality of first group light sources 20 are provided adjacent to the first lens 10 to emit light incident on the first lens 10. The plurality of second group light sources 40 are disposed adjacent to the second lens 30 to emit the light incident on the second lens 30.

In this embodiment, the first light source 20, the second light source 22, the third light source 23, the fourth light source 24, and the fifth light source 25 are used as a plurality of first group light sources 20 The sixth light source 41, the seventh light source 42, the eighth light source 43, the ninth light source 44, and the ninth light source 44 are used as a plurality of second group light sources 40, ) And the tenth light source 45 are used as a reference. However, the number of the light sources used as the plurality of the first group light sources 20 and / or the plurality of the second group light sources 40 may vary depending on the required beam pattern or the like. As the light sources 21 to 25 and 41 to 45, light emitting diodes such as LEDs and LDs may be used.

1, the light emitted from the plurality of first group light sources 20 passes through the first lens 10 and passes through the first beam patterns H1 to H5 composed of the plurality of unit beam patterns H1 to H5, H5).

Each unit beam pattern H1 to H5 corresponds one-to-one with a plurality of the first group light sources 20. Specifically, the light emitted from the first light source 21 passes through the first lens 10 to form the first unit beam pattern H1, and the light emitted from the second light source 22 passes through the first lens 10 to form a second unit beam pattern H2 and the light emitted from the third light source 23 passes through the first lens 10 to form a third unit beam pattern H3, The light emitted from the four light sources 24 passes through the first lens 10 to form the fourth unit beam pattern H4 and the light emitted from the fifth light source 25 passes through the first lens 10 Thereby forming a fifth unit beam pattern H5.

Although the irradiation regions of the unit beam patterns H1 to H5 are clearly distinguished from each other in FIG. 1, the unit beam patterns H1 to H5 may be formed so as to partially overlap the adjacent unit beam patterns have.

The first lens 10 according to the present embodiment is arranged such that light emitted from the first light source 21 located at the leftmost end of the plurality of first group light sources 20 is incident on the rightmost side of the first beam patterns H1 to H5 The first unit beam pattern H1 is formed on the first light source 20 and the light emitted from the fifth light source 25 located on the rightmost side of the plurality of first group light sources 20 The light emitted from the plurality of first group light sources 20 is reversed leftward and rightward and emitted toward the front of the vehicle in such a manner that the fifth unit beam pattern H5 formed on the left side is formed.

1, the light emitted from the plurality of second group light sources 40 passes through the second lens 30 and passes through a second beam pattern (H6 to H10) composed of a plurality of unit beam patterns H6 to H10 H6 to H10).

Each of the unit beam patterns H6 to H10 corresponds one-to-one with a plurality of the second group light sources 40. [ Specifically, the light emitted from the sixth light source 41 passes through the second lens 30 to form the sixth unit beam pattern H6, and the light emitted from the seventh light source 42 passes through the second lens 30 to form a seventh unit beam pattern H7 and the light emitted from the eighth light source 43 passes through the second lens 30 to form an eighth unit beam pattern H8, The light emitted from the light source 44 passes through the second lens 30 to form the ninth unit beam pattern H9 and the light emitted from the tenth light source 45 passes through the second lens 30 Thereby forming a tenth unit beam pattern H10.

Although the irradiation regions of the unit beam patterns H6 to H10 are clearly distinguished from each other in FIG. 1, the unit beam patterns H6 to H10 may be formed so as to partially overlap with the adjacent unit beam patterns have.

The second lens 30 according to the present embodiment is disposed at the rightmost side of the second beam patterns H6 to H10 with the light emitted from the sixth light source 41 located at the leftmost end of the plurality of second group light sources 40 The sixth unit beam pattern H6 is formed on the second group of the first group light sources 40 and the light emitted from the tenth light source 45 located on the rightmost side of the plurality of second group light sources 40 And the tenth unit beam pattern H10 formed on the left side is formed, the light emitted from the plurality of second group light sources 40 can be turned rightward and leftward and emitted toward the front of the vehicle.

As shown in FIG. 1, when the first beam patterns H1 to H5 and the second beam patterns H6 to H10 are irradiated on the screen, the second beam patterns H6 to H10 form a first beam pattern H1 to H5, respectively.

On the screen, the second beam patterns H6 to H10 may be formed so as to partially overlap the first beam patterns H1 to H5 in the vertical direction. That is, as shown in FIG. 1, first beam patterns H1 to H5 are formed on the ninth unit beam pattern H9 and the tenth unit beam pattern H10 of the second beam patterns H6 to H10 The first unit beam pattern H1 and the second unit beam pattern H2 may be positioned.

Although the first beam patterns H1 to H5 and the second beam patterns H6 to H10 are shown as being vertically divided into the first beam patterns H1 to H5 and the second beam patterns H6 to H10, The unit beam patterns may be partially overlapped with each other.

The first beam patterns H1 to H5 and the second beam patterns H6 to H10 are formed in accordance with the size, shape and roughness of the beam pattern formed by the first beam patterns H1 to H5 and the second beam patterns H6 to H10, H10 in the horizontal / vertical direction may vary.

When the first beam patterns H1 to H5 and the second beam patterns H6 to H10 are irradiated on the front side of the vehicle, the first beam patterns H1 to H5 and the second beam patterns H6 to H10 And the second beam patterns H6 to H10 are irradiated to the near side of the vehicle relative to the first beam patterns H1 to H5 to form a beam pattern deflected rightward from the center line of the vehicle.

1, the second beam patterns H6 to H10 are irradiated so as to eccentrically downward to the right side of the first beam patterns H1 to H5, Headlamps can be used.

On the contrary, unlike the case shown in FIG. 1, in the region where the vehicle is forced to travel to the left, the second beam patterns H6 to H10 are irradiated to be eccentrically downward to the left of the first beam patterns H1 to H5 Headlamps can be used. 1, the second lens 30 and the plurality of second group light sources 40 may be located on the left side of the first lens 10 and the plurality of first group light sources 20 .

On the other hand, the light amounts of the plurality of first group light sources 20 and the plurality of second group light sources 40 can be individually controlled by the control unit 50.

FIG. 2 is a table showing the light amount ratios of the unit beam patterns and the unit beam patterns constituting the beam pattern of FIG.

The control unit 50 controls the luminous intensity of the light sources 21 to 25 and 41 to 45 of the plurality of first group light sources 20 and the plurality of second group light sources 40 to generate the unit beam patterns H1 to H10, As shown in FIG. The control unit 50 may control the brightness of the light sources 21 to 25 and 41 to 45 by controlling the current or voltage supplied to the light sources 21 to 25 and 41 to 45.

Since the first beam patterns H1 to H5 are beam patterns illuminating a long distance ahead of the vehicle and the second beam patterns H6 to H10 are beam patterns illuminating near the front of the vehicle, The light quantity should be relatively higher than the light quantity of the second beam patterns H6 to H10.

2, the relative amounts of the unit beam patterns H1 to H5 constituting the first beam patterns H1 to H5 are 90% to 100%, while the relative amounts of the second beam patterns H6 to H5 are 90% to 100% The relative amount of the unit beam patterns H6 to H10 constituting each of the unit beams H10 to H10 may be 40% to 80%.

The relative amounts of light of the second unit beam pattern H2, the third unit beam pattern H3 and the fourth unit beam pattern H4 located at the center of the first beam patterns H1 to H5 are the unit beam patterns H1 To H10). The control unit 50 may control the luminous intensity of the second light source 22, the third light source 23 and the fourth light source 24 to be higher than those of the other light sources 21, 25 and 41 to 45.

The relative amounts of light of the first unit beam pattern H1 and the fifth unit beam pattern H5 located on both sides of the first beam patterns H1 to H5 are the second unit beam patterns H2, Can be 90% lower than that of the third unit beam pattern H3 and the fourth unit beam pattern H4. The control unit 50 may control the brightness of the first light source 21 and the fifth light source 25 to be lower than that of the second light source 22, the third light source 23, and the fourth light source 24 .

As described above, the control unit 50 controls the luminous intensity of the plurality of first group light sources 20, so that the first beam patterns H1 to H5 are arranged in such a manner that the light quantity of the first beam patterns H1 to H5 is highest at the center, Thereby forming a pattern.

2, in the unit beam patterns H6 to H10 constituting the second beam patterns H6 to H10, the relative amount of light of the tenth unit beam pattern H10 formed on the leftmost side is 80% And the relative quantity of light is gradually decreased in the order of the ninth unit beam pattern H9, the eighth unit beam pattern H8, the seventh unit beam pattern H7, and the sixth unit beam pattern H6 in the right direction And the relative amount of light of the sixth unit beam pattern H6 formed on the rightmost side is 40%.

The control unit 50 controls the brightness of the tenth light source 45 to be lower than the brightness of the first light source 21 and the fifth light source 25 and controls the ninth light source 44 and the eighth light source 43, The eighth light source 43, the seventh light source 42 and the sixth light source 41 so that the light intensity gradually decreases in the order of the seventh light source 42, the seventh light source 42, and the sixth light source 41, .

As described above, the control unit 50 controls the luminous intensity of the plurality of second group light sources 40, so that the second beam patterns H6 to H10 form a beam pattern in which the light amount gradually decreases from left to right do.

The second beam patterns H6 to H10 may be configured to be eccentrically eccentrically downward to the left side of the first beam patterns H1 to H5 in the region where the vehicle is forced to travel to the left. In this case, H6 to H10 constituting the sixth unit beam pattern H6 to H10 is 80% and the seventh unit beam pattern H7, The tenth unit beam pattern H8, the ninth unit beam pattern H9, and the tenth unit beam pattern H10 are gradually formed in the order of the lower unit beam pattern H10 ) May be 40%.

Hereinafter, the first lens 10 and the second lens 30 of the headlamp 1 for a vehicle according to an embodiment of the present invention will be described in detail.

FIG. 3 is a perspective view showing the first lens of FIG. 1, FIG. 4 is a longitudinal sectional view of the lens of FIG. 3, and FIG. 5 is a cross-sectional view of the lens of FIG.

3 and 4, the first lens 10 has an asymmetric shape in the up-and-down direction and the back-and-forth direction and has a base surface 15, an incident surface 11, a first reflection surface 12, And has a three-dimensional structure including a second reflecting surface 13 and an emitting surface 14. [

As shown in FIG. 4, the base surface 15 and the incident surface 11 form the lower surface of the first lens 10. The incident surface 11 extends from one side of the base surface 15 and forms an inverted inclination which is formed downwards toward the optical axis X of the first lens 10.

A plurality of first group light sources (20) are provided adjacent to the incident surface (11).

The light emitted from the plurality of first group light sources 20 forms the first beam patterns H1, H2, H3, H4, and H5 that are irradiated to the front of the vehicle through the first lens 10. The first beam patterns H1, H2, H3, H4, and H5 may be used as an adaptive driving beam pattern that is individually blinked according to the position of the opposing vehicle. In this case, the control unit 50 can individually control the plurality of first group light sources 20 to blink.

A plurality of first group light sources 20 are arranged such that each unit beam pattern H1, H2, H3, H4, H5 constituting the first beam patterns H1, H2, H3, H4, The light sources 21 to 25 constituting the light source are arranged so as to be focused at different positions.

The plurality of first group light sources 20 are provided so as to emit light toward the incident surface 11 and the first reflecting surface 12. As a result, it is installed so as to irradiate light upward with respect to the optical axis X of the first lens 10.

Although five unit beam patterns H1, H2, H3, H4 and H5 are formed by using five light sources 21, 22, 23, 24 and 25 in this embodiment, The number of light sources may vary depending on the number of beam patterns.

In the present embodiment, an example in which a plurality of unit beam patterns H1, H2, H3, H4, and H5 are extended in a row by arranging a plurality of light sources 21, 22, 23, 24, However, it is also possible to arrange a plurality of light sources in a plurality of rows to form a plurality of unit beam patterns formed in a plurality of rows.

As shown in Figs. 3 and 4, the first reflecting surface 12 and the emitting surface 14 form the front surface of the first lens 10.

The first reflection surface 12 forms a front lower part of the lens 10 and the emission surface 14 forms an upper front part of the first lens 10. The first reflecting surface 12 and the emitting surface 14 may be formed to be interconnected.

As shown in Figs. 3 and 4, the first reflecting surface 12 has a convex shape as a whole in front of the first lens 10. However, the central portion of the first reflecting surface 12 has a concave shape in the longitudinal direction.

As shown in Fig. 3, the first reflecting surface 12 includes three bent portions 12a, 12b, and 12c. The curved portion refers to a portion of a curved surface that changes from upward slope to downward slope and forms a convex shape, or from a downward slope to an upward slope and forms a concave shape.

3, the first reflecting surface 12 has a first bent portion 12a formed at the center of the first reflecting surface 12, a first bent portion 12b formed at one side of the first bent portion 12a, 2 bent portion 12b and a third bent portion 12c formed on the other side of the first bent portion 12a.

The first reflecting surface 12 has a concave shape in the first bent portion 12a and has a convex shape in the second bent portion 12b and the third bent portion 12c located on both sides of the first bent portion 12a Shape.

The first reflection surface 12 is coated with a metal layer such as aluminum or chromium having a high optical reflectance and is emitted from a plurality of first group light sources 21, 22, 23, 24 and 25, 1 lens 10 can be effectively reflected toward the second reflecting surface 13. [0064]

As shown in Fig. 4, the second reflecting surface 13 forms the rear surface of the first lens 10.

The second reflecting surface 13 is formed to connect the rear end of the base surface 15 and the upper end of the emitting surface 14 and reflects the light incident on the second reflecting surface 13 to the emitting surface 14.

The second reflection surface 13 may also be configured such that a metal layer such as aluminum or chromium having a high optical reflectance is coated so that the light incident on the second reflection surface 13 is effectively reflected toward the emission surface 14. [

Referring to FIG. 4, the vertical optical path of the light emitted from the plurality of first group light sources 20 will be described.

4, a part HA of the lights HA and HB emitted from the plurality of first group light sources 20 is incident into the first lens 10 through the incident surface 11, And is reflected by the first reflection surface 12 to be directed to the second reflection surface 13 and then reflected by the second reflection surface 13 to be emitted from the first lens 10 through the emission surface 14, To form a part of the first beam pattern.

The other part HB of the lights HA and HB emitted from the plurality of first group light sources 20 enters into the first lens 10 through the incident surface 11 and then enters the exit surface 14 A part of the first beam pattern reflected by the second reflecting surface 13 and emitted from the lens 10 through the emitting surface 14 and irradiated toward the front of the vehicle is totally reflected by the second reflecting surface 13, .

For this purpose, the emission surface 14 is formed so that the light traveling toward the emission surface 14 is not directed to the first reflection surface 12 of the lights HA and HB emitted from the plurality of first group light sources 20, Is formed with a curvature capable of total reflection toward the reflection surface (13).

The first and second reflecting surfaces 12 and 13 of the light HA and HB emitted from the plurality of first group light sources 20 are reflected by the exit surface 14, The light HA emitted to the front of the vehicle is mostly irradiated toward the front of the vehicle through the lower portion of the exit surface 14. Of the lights HA and HB emitted from the light source 20, the light HB reflected by the second reflection surface 13 after being totally reflected by the exit surface 14 and emitted to the exit surface 14 is mostly emitted And is irradiated toward the front of the vehicle through the upper portion of the surface 14.

The light HA reflected from the first reflection surface 12 and the second reflection surface 13 of the lights HA and HB emitted from the plurality of first group light sources 20 and emitted to the emission surface 14 Since the reflection angle reflected by the first reflection surface 12 is relatively small, a beam pattern formed by the light HA is formed narrow to form a beam pattern having a relatively high luminous intensity.

Among the lights HA and HB emitted from the plurality of first group light sources 20, the light reflected by the second reflection surface 13 after being totally reflected by the exit surface 14 and emitted to the exit surface 14 HB are relatively large in the reflection angle reflected by the exit surface 14, a beam pattern formed by the light HB is formed to be wide, and a beam pattern having a relatively low luminous intensity is formed.

Referring to Fig. 5, the horizontal direction optical path of the light emitted from the plurality of first group light sources will be described.

5 is a plan view of the light emitted from the plurality of first group light sources 20 along the horizontal direction optical path of the light reflected by the first reflection surface 12 and the second reflection surface 13 and passing through the emission surface 14. [ The incident surface 11 and the emitting surface 14 are not shown for convenience of explanation.

As shown in FIG. 5, a plurality of first group light sources 21, 22, 23, 24, and 25 are arranged in a line toward the incident surface 11 and the first reflecting surface 12. The plurality of first group light sources 21, 22, 23, 24, and 25 may have an arrangement of two or more rows, if necessary.

The third light source 23 positioned at the center of the plurality of first group light sources 21, 22, 23, 24 and 25 is arranged to face the first bent portion 12a, and the first light source 21, The two light sources 22, the fourth light source 24, and the fifth light source 25 may be arranged in a line around the third light source 23.

The first light source 21 and the second light source 22 may be disposed to face the curved surface between the first bent portion 12a and the third bent portion 12c, The first bent portion 25 may be disposed to face the curved surface between the first bent portion 12a and the second bent portion 12b.

5, the first reflection surface 12 is concave in the first bent portion 12a, and the light H3 emitted from the third light source 23 is formed in the first bent portion 12a, And the beam pattern is extended to the rear of the third light source 23 and is incident on the center of the second reflecting surface 13. [

The second reflecting surface 13 reflects the light H3 emitted from the third light source 23 toward the exit surface 14 and forms a unit beam pattern H3 located at the center of the first beam pattern.

On the other hand, the light H2 emitted from the second light source 22 positioned on the left side of the third light source 23 is incident on the curved surface between the first curved portion 12a and the third curved portion 12c. Since the third bent portion 12c is convexly formed and the first bent portion 12a is concave, the first bent portion 12a and the second bent portion 12b are formed so that the light H2 emitted from the second light source 22 is incident, The curved surface between the three bent portions 12c forms a downward inclination toward the first bent portion 12a.

Therefore, the light H2 emitted from the second light source 22 is reflected from the curved surface between the first bent portion 12a and the third bent portion 12c to the left rearward, and the beam pattern is expanded.

The second reflection surface 13 reflects the light H2 emitted from the second light source 22 and reflected by the first reflection surface 12 to the right front side and is incident on the unit beam pattern 23 formed by the third light source 23. [ A unit beam pattern H2 located on the right side of the unit beam H3 is formed.

The light H1 emitted from the first light source 21 positioned on the left side of the second light source 22 is also incident on the curved surface between the first curved portion 12a and the third curved portion 12c. However, the light H1 emitted from the first light source 21 may be incident on the third bent portion 12c so as to be closer to the light H2 emitted from the second light source 22.

The light H1 emitted from the first light source 21 is also reflected from the curved surface between the first curved portion 12a and the third curved portion 12c to the left rear and the beam pattern is expanded. However, the light H1 emitted from the first light source 21 may travel to the left of the light H2 emitted from the second light source 22. [ The light H1 emitted from the first light source 21 and reflected by the first reflection surface 12 is emitted from the second light source 22 and is reflected by the light reflected by the first reflection surface 12 And can be deflected to the left from the second reflecting surface 13 and incident.

The second reflection surface 13 reflects the light H1 emitted from the first light source 21 and reflected by the first reflection surface 12 to the right front. The second reflection surface 13 is formed on the right side of the unit beam pattern H2 formed by the second light source 22 and the light H1 emitted from the first light source 21 and reflected by the first reflection surface 12 To be positioned. As a result, the light H1 emitted from the first light source 21 and reflected by the first reflection surface 12 is transmitted through the unit beam pattern H2 located on the right side of the unit beam pattern H2 formed by the second light source 22. [ (H1).

On the other hand, the light H4 emitted from the fourth light source 24 located on the right side of the third light source 23 is incident on the curved surface between the first curved portion 12a and the second curved portion 12b. Since the second bent portion 12b is convexly formed and the first bent portion 12a is concave, the first bent portion 12a and the second bent portion 12b, on which the light H4 emitted from the fourth light source 24 is incident, The curved surface between the two bent portions 12b forms a downward inclination toward the first bent portion 12a.

Therefore, the light H4 emitted from the fourth light source 24 is reflected to the right rear side from the curved surface between the first bent portion 12a and the second bent portion 12b, and the beam pattern is expanded.

The second reflection surface 13 reflects the light H4 emitted from the fourth light source 24 and reflected by the first reflection surface 12 to the left front side and is incident on the unit beam pattern 23 formed by the third light source 23. [ A unit beam pattern H4 located on the left side of the unit beam H3 is formed.

The light H5 emitted from the fifth light source 25 positioned on the right side of the fourth light source 24 is also incident on the curved surface between the first curved portion 12a and the second curved portion 12b. However, the light H5 emitted from the fifth light source 25 may be incident on the second bent portion 12b so as to be adjacent to the light H4 emitted from the fourth light source 24.

The light H5 emitted from the fifth light source 25 is also reflected from the curved surface between the first curved portion 12a and the second curved portion 12b to the right rear and the beam pattern is expanded. However, the light H5 emitted from the fifth light source 25 may proceed to the right side of the light H4 emitted from the fourth light source 24. [ The light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 12 is emitted from the fourth light source 24 and is reflected by the light H4 reflected from the first reflection surface 12 And can be deflected rightward from the second reflecting surface 13 and incident thereon.

The second reflection surface 13 reflects the light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 12 to the left front. The second reflecting surface 13 is formed so that the light H5 emitted from the fifth light source 25 and reflected by the first reflecting surface 12 is positioned on the left side of the beam pattern H4 formed by the fourth light source 24. [ . As a result, the light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 12 passes through the unit beam pattern H4 located on the left side of the unit beam pattern H4 formed by the fourth light source 24, (H5).

Although not shown, a portion of the exit surface 14 where light emitted from a plurality of light sources 21, 22, 23, 24, and 25 is totally reflected is provided with three bent portions 12a , 12b, 12c are formed to extend the beam pattern and to be totally reflected by the second reflecting surface 13. [

The first lens 10 of the headlamp 1 for a vehicle according to the present embodiment uses a first reflecting surface 12 having three bent portions 12a, 12b and 12c to form a plurality of light sources 21, 22, 23, 24, and 25, and is reflected by the second reflection surface 13.

Therefore, it is possible to form a beam pattern spreading more widely in front of the vehicle more effectively.

The second reflection surface 13 is formed by the light beams H1 and H2 emitted from the first light source 21 and the second light source 22 about the unit beam pattern H3 formed by the third light source 23, The light beams H4 and H5 emitted from the fourth light source 24 and the fifth light source are reflected toward the front so that a beam pattern spreading in front of the vehicle can be formed more effectively.

In addition, while the conventional optical system of the headlamp for a vehicle is constituted based on a light source, a lens, and a reflector that reflects the light emitted from the light source toward the lens, the headlamp 1 for a vehicle according to the present embodiment is provided without a reflector A beam pattern is formed by using the plurality of light sources 21 to 25 and the first lens 10.

Therefore, not only the time, effort, and cost for designing the reflector can be reduced, but also the space for installing the reflector can be omitted, thereby enabling a more compact headlamp for a vehicle.

6 is a cross-sectional view of a first lens according to another embodiment of the present invention.

For the sake of convenience of description, the same reference numerals are used for the components similar to those of the above-described embodiment, and a description of components common to the above-described embodiments will be omitted.

As shown in FIG. 6, the first lens 110 according to another embodiment of the present invention differs from the first lens 10 of the above-described embodiment in the shape of the first reflecting surface 112.

The first reflecting surface 112 of the first lens 110 according to another embodiment also includes three bent portions 112a, 112b, and 112c.

6, the first reflecting surface 112 includes a first bent portion 112a formed at the center of the first reflecting surface 112, a first bent portion 112b formed at one side of the first bent portion 112a, The first reflection surface 112 of the first lens 110 according to the present embodiment includes the second bent portion 112b formed on the other side of the first bent portion 112b and the third bent portion 112c formed on the other side of the first bent portion 112a, The first bent portion 112a has a concave shape in the second bent portion 112b and the third bent portion 112c which are convex in the first bent portion 112a and are located on both sides of the first bent portion 112a.

The first reflection surface 112 is convexly formed in the first curved portion 112a and the light H3 emitted from the third light source 23 is reflected by the first curved portion 112a and is reflected by the third light source 23 And is incident on the central portion of the second reflecting surface 113

The second reflecting surface 131 reflects the light H3 emitted from the third light source 23 toward the exit surface 14 and reflects a unit beam pattern H3 located at the center of the first beam patterns H1 through H5 , See FIG. 5).

On the other hand, the light H2 emitted from the second light source 22 located on the left side of the third light source 23 is incident on the curved surface between the first curved portion 112a and the third curved portion 112c. Since the third bent portion 112c is concave and the first bent portion 112a is convexly formed, the first bent portion 112a and the second bent portion 112b are formed, in which the light H2 emitted from the second light source 22 is incident, The curved surface between the three bent portions 112c forms an upward inclination toward the first bent portion 112a.

Therefore, the light H2 emitted from the second light source 22 is reflected from the curved surface between the first curved portion 112a and the third curved portion 112c to the right rearward, and the beam pattern is expanded.

The second reflecting surface 113 reflects the light H2 emitted from the second light source 22 and reflected by the first reflecting surface 112 forward or to the right front to form a unit formed by the third light source 23. [ Thereby forming a unit beam pattern H2 located on the right side of the beam pattern H3.

The light H1 emitted from the first light source 21 located on the left side of the second light source 22 is also incident on the curved surface between the first curved portion 112a and the third curved portion 112c. However, the light H1 emitted from the first light source 21 may be incident on the third bent portion 112c so as to be closer to the light H2 emitted from the second light source 22.

The light H1 emitted from the first light source 21 is also reflected from the curved surface between the first curved portion 112a and the third curved portion 112c to the right rear and the beam pattern is expanded. However, the light H1 emitted from the first light source 21 can proceed to the right side of the light H2 emitted from the second light source 22. [ Therefore, the light H1 emitted from the first light source 21 and reflected by the first reflection surface 112 is emitted from the second light source 22 and is reflected by the light reflected by the first reflection surface 112 And can be deflected rightward from the second reflecting surface 113 and incident thereon.

The second reflection surface 113 reflects the light H1 emitted from the first light source 21 and reflected by the first reflection surface 112 forward or rightward. The second reflection surface 113 is formed on the right side of the unit beam pattern H2 formed by the second light source 22 so that the light H1 emitted from the first light source 21 and reflected by the first reflection surface 112 To be positioned. As a result, the light H1 emitted from the first light source 21 and reflected by the first reflection surface 112 is transmitted through the unit beam pattern H2 located on the right side of the unit beam pattern H2 formed by the second light source 22. [ (H1).

On the other hand, the light H4 emitted from the fourth light source 24 located on the right side of the third light source 23 is incident on the curved surface between the first curved portion 112a and the second curved portion 112b. Since the second bent portion 112b is concave and the first bent portion 112a is convexly formed, the first bent portion 112a and the second bent portion 112b, The curved surface between the two bent portions 112b forms an upward inclination toward the first bent portion 112a.

Accordingly, the light H4 emitted from the fourth light source 24 is reflected from the curved surface between the first curved portion 112a and the second curved portion 112b to the left rear, and the beam pattern is expanded.

The second reflection surface 113 reflects the light H4 emitted from the fourth light source 24 and reflected by the first reflection surface 112 forward or to the left front side to form a unit formed by the third light source 23. [ Thereby forming a unit beam pattern H4 positioned on the left side of the beam pattern H3.

The light H5 emitted from the fifth light source 25 located on the right side of the fourth light source 24 is also incident on the curved surface between the first curved portion 112a and the second curved portion 112b. However, the light H5 emitted from the fifth light source 25 may be incident on the second bent portion 112b so as to be adjacent to the light H4 emitted from the fourth light source 24.

The light H5 emitted from the fifth light source 25 is also reflected from the curved surface between the first curved portion 112a and the second curved portion 112b to the left rear and the beam pattern is expanded. However, the light H5 emitted from the fifth light source 25 may proceed to the left of the light H4 emitted from the fourth light source 24. [ The light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 112 is emitted from the fourth light source 24 and is reflected by the light H4 reflected from the first reflection surface 112 And may be deflected to the left from the second reflecting surface 113 and incident thereon.

The second reflection surface 113 reflects the light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 112 forward or leftward. The second reflection surface 113 is formed on the left side of the unit beam pattern H4 formed by the fourth light source 24 and the light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 112 To be positioned. As a result, the light H5 emitted from the fifth light source 25 and reflected by the first reflection surface 112 passes through the unit beam pattern H4 located on the left side of the unit beam pattern H4 formed by the fourth light source 24, (H5).

Therefore, the first lens 10 of the vehicle headlamp 1 according to the above-described embodiment is arranged so that the second reflection surface 13 is located between the first light source 21 and the second light source 22, H2 and the fourth light source 24 and the light H4 and H5 emitted from the fifth light source are intersected with each other, The first reflecting surface 112 is formed so that the first reflecting surface 112 irradiates the lights H1 and H2 emitted from the first light source 21 and the second light source 22 and the light emitted from the fourth light source 24 and the fifth light source H4, and H5) are intersected with each other.

11 is a side view schematically showing a part of a configuration of a second light source module of a vehicle headlamp according to an embodiment of the present invention. 12 is a longitudinal sectional view illustrating a second light source module of a vehicle headlamp according to an embodiment of the present invention. FIG. 13 is a view schematically showing a plurality of third group light sources and shields in FIG. 12; FIG.

11, the second light source module of the lamp 1 for a vehicle according to the embodiment of the present invention includes a third lens 70a, a plurality of third group light sources 60a, a shield 80, A fourth lens 70c and a plurality of fourth group light sources 60c. In addition, the second light source module includes a fifth lens 70b and a plurality of fifth group light sources 60b.

As described above, the second light source module irradiates light toward the front of the vehicle to form a low beam pattern L (see Fig. 14).

A plurality of third group light sources 60A are provided adjacent to the third lens 70a to emit light incident on the third lens 70a. The plurality of fourth group light sources 60c are disposed adjacent to the fourth lens group 70c to emit light incident on the fourth lens group 70c. In addition, a plurality of the fifth group light sources 60b are provided adjacent to the fifth lens 70b to emit the light incident on the fifth lens 70b.

In the present embodiment, a plurality of third group light sources 60a, a plurality of fourth group light sources 60c, and a plurality of fifth group light sources 60b will be described with reference to an example using four light sources. However, the number of the light sources used as the plurality of the third group light sources 60a, the plurality of the fourth group light sources 60c, and the plurality of the fifth group light sources 60b may vary depending on the required beam pattern and the like. As the light sources, light emitting diodes such as LEDs and LDs may be used.

As described above, the second light source module includes a third lens 70a, a plurality of third group light sources 60a that emit light, and a shield 30. As shown in Fig. 12, the third lens 70a is positioned below the fourth lens 70c and the fifth lens 70b.

As will be described later, the third lens 70a irradiates the light emitted from the plurality of third group light sources 60a forward of the vehicle to form the third beam pattern L1. Further, the third beam pattern L1 is formed at a distance from the vehicle to the fourth beam pattern L3 and the fifth beam pattern L2, which will be described later (see Fig. 15).

As shown in Figs. 11 to 13, the third lens 70a has an asymmetric shape in the up-and-down direction and the back-and-forth direction and has a first base surface 75a, an incident surface 71a, 72a, a second reflecting surface 73a, an emitting surface 74a, and a side surface.

As shown in Fig. 11, the first base surface 75a and the incident surface 71a form the upper surface of the third lens 70a.

The incident surface 71a is a surface on which light emitted from the light source is incident and extends from the front side of the first base surface 75a and is formed to be upwardly inclined forward with respect to the optical axis of the third lens 70a.

A plurality of third group light sources 60a are disposed above the incident surface 71a and the incident surface 71a is formed to be convex toward the plurality of third group light sources 60a. In other words, the incident surface 71a is formed into a curved surface convex upward. However, in some embodiments, the incident surface 71a may be formed in a flat plane. The front end of the incident surface 71a is connected to the upper end of the first reflecting surface 72a.

The first base surface 75a extends from the rear side of the incident surface 71a. The first base surface 75a is formed to be substantially flat with the optical axis of the third lens 70a. In addition, the rear side of the first base surface 75a is connected to the rear surface of the third lens 70a.

As shown in Figs. 11 and 12, the first reflection surface 72a and the emission surface 74a form the front surface of the third lens 70a.

The first reflection surface 72a forms an upper front surface of the third lens 70a and the emission surface 74a forms a lower front surface of the third lens 70a. The first reflecting surface 72a and the emitting surface 74a may be formed to be connected to each other.

As shown in Figs. 11 and 12, the first reflecting surface 72a is formed in a convex curved shape forward of the entire third lens 70a. However, in some embodiments, the first reflective surface 72a may be formed as a flat flat surface as a whole.

The first reflection surface 72a is formed by depositing a metal layer such as aluminum or chromium having a high optical reflectance and is emitted from a plurality of third group light sources 60a and is incident into the third lens 70a through the incident surface 71a The light can be effectively reflected toward the rear surface of the third lens 70a.

The second reflecting surface 73a forms at least a part of the rear surface of the third lens 70a. 3, the second reflecting surface 73a forms the entire rear surface of the third lens 70a, but the present invention is not limited thereto. The second reflecting surface 73a may be formed on the rear surface of the third lens 70a, A part can be formed.

The second reflecting surface 73a is formed to connect the rear end of the first base surface 75a and the lower end of the emitting surface 74a so as to reflect the light incident on the second reflecting surface 73a to the emitting surface 74a do.

The second reflective surface 73a may also be configured such that a metal layer of aluminum or chromium having a high reflectance is deposited and the light incident on the second reflective surface 73a is effectively reflected toward the emission surface 74a. Further, the second reflecting surface 73a has a substantially convex shape toward the rear side.

The emitting surface 74a forms the front surface of the third lens 70a together with the first reflecting surface 72a. That is, the exit surface 74a forms a part of the front surface of the third lens 70a. For example, the exit surface 74a forms the bottom front of the third lens 70a.

The side surface connects the front surface of the third lens 70a and the rear surface of the third lens 70a. In other words, the side surface connects the first reflecting surface 72a and the emitting surface 74a to the second reflecting surface 73a. The side surface connecting the front surface of the third lens 70a and the rear surface of the third lens 70a is formed so as to be thicker from the upper side to the lower side as the second reflecting surface 73a has a substantially convex shape rearward, Is thinned.

The plurality of third group light sources 60a are disposed on the upper side of the third lens 70a and emit light toward the third lens 70a. The light emitted from the plurality of third group light sources 60a passes through the shield 30 and the third lens 70a, and then is irradiated forward of the vehicle to form a first beam pattern. The details of the first beam pattern will be described later.

The plurality of third group light sources 60a are installed so as to direct the front surfaces of the incident surface 71a and the third lens 70a. For example, a plurality of third group light sources 60a are provided adjacent to the upper side of the incident surface 71a.

As shown in FIG. 13, the plurality of third group light sources 61a, 62a, 63a, and 64a may be composed of four light sources. Light emitted from the plurality of third group light sources 61a, 62a, 63a, and 64a can be irradiated forward of the vehicle through the third lens 70a to form the third beam pattern L1.

The plurality of third group light sources 60a are provided so as to emit light toward the incident surface 71a, the emitting surface 74a and the first reflecting surface 72a. As shown in FIG. 13, the plurality of third group light sources 60a are disposed on the upper side of the third lens 70a and are installed so as to irradiate light downwardly inclined forward.

Accordingly, a space for installing a heat sink (not shown) is formed on the upper side of the plurality of third group light sources 60a. The heat sink is installed above the plurality of third group light sources 60a to dissipate the heat generated by the plurality of third group light sources 60a to the outside. Since the heat sinks are provided above the plurality of third group light sources 60a, the heat radiation efficiency of the plurality of third group light sources 60a is improved.

The shield 80 is positioned above the third lens 70a. As shown in Fig. 13, the shield 80 is positioned between the third lens 70a and the plurality of third group light sources 60a. Accordingly, the shield 30 functions to shield a part of light emitted from the plurality of first group light sources 61a, 62a, 63a, and 64a toward the third lens 70a.

In other words, the shield 80 shields part of the light emitted from the plurality of first group light sources 61a, 62a, 63a, and 64a toward the third lens 70a to form a third beam pattern L1 .

A cut-off edge is formed at the lower end of the shield 80. Thus, a cut-off line is formed in the third beam pattern L1.

As described above, the second light source module includes a fourth lens 70c and a plurality of fourth group light sources 60c that emit light.

As shown in Fig. 12, the fourth lens 70c is positioned above the third lens 70a and the fifth lens 70b.

As will be described later, the fourth lens 70c irradiates the light emitted from the plurality of fourth group light sources 60c forward of the vehicle to form a fourth beam pattern L3. The fourth beam pattern L3 is formed nearer to the vehicle than the third beam pattern L1 and the fifth beam pattern L2 to be described later (see Fig. 15).

11 to 12, the fourth lens 70c has an asymmetric shape in the up-and-down direction and the back-and-forth direction and has a first base surface 75c, an incident surface 71c, 72c, a second reflecting surface 73c, an emitting surface 74c, and a side surface.

The fourth lens 70c irradiates the light emitted from the plurality of fourth group light sources 60c toward the front of the vehicle to form a second beam pattern L3 that overlaps at least part of the third beam pattern L1 . 15) is provided in front of the vehicle with a low beam pattern L (see Fig. 15) so that at least part of the second beam pattern L3 overlaps with the first beam pattern L1, .

As shown in Fig. 12, the first base surface 75c and the incident surface 71c form the upper surface of the fourth lens 70c.

The incident surface 71c is a surface on which light emitted from the light source is incident and extends from the front side of the first base surface 75c and is formed to be upwardly inclined forward with respect to the optical axis of the fourth lens 70c.

A plurality of fourth group light sources 60c are disposed on the upper side of the incident surface 71c and an incident surface 71c is formed to be convex toward the plurality of fourth group light sources 60c. In other words, the incident surface 71c is formed as a convex curved surface toward the image side. However, in some embodiments, the incident surface 71c may be formed in a flat plane. Further, the front end of the incident surface 71c is connected to the upper end of the first reflecting surface 72c.

The first base surface 75c is formed to be substantially flat with the optical axis of the fourth lens 70c. Further, the rear side of the first base surface 75c is connected to the rear surface of the fourth lens 70c.

As shown in Figs. 12 and 13, the first reflection surface 72c and the emission surface 74c form the front surface of the fourth lens 70c.

The first reflection surface 72c forms an upper front surface of the fourth lens 70c and the emission surface 74c forms a lower front surface of the fourth lens 70c. The first reflecting surface 72c and the emitting surface 74c may be formed to be connected to each other.

As shown in Figs. 11 and 12, the first reflecting surface 72c is formed to have a convex curved surface shape forward of the entire fourth lens 70c. However, in some embodiments, it may be formed as a generally flat planar shape.

The first reflection surface 72c is formed by depositing a metal layer such as aluminum or chromium having a high optical reflectance and emitting a plurality of fourth group light sources 60c and entering the fourth lens 70c through the incident surface 71c And the light is effectively reflected toward the rear surface of the fourth lens 70c.

And the second reflecting surface 73c forms at least a part of the rear surface of the fourth lens 70c. 3, the second reflecting surface 73c forms the entire rear surface of the fourth lens 70c, but the present invention is not limited thereto. The second reflecting surface 73c may be formed on the rear surface of the fourth lens 70c A part can be formed.

The second reflecting surface 73c is formed to connect the rear end of the first base surface 75c and the lower end of the emitting surface 74c and reflects the light incident on the second reflecting surface 73c to the emitting surface 74c do.

The second reflecting surface 73c may also be configured such that a metal layer of aluminum or chromium having a high reflectance is deposited and the light incident on the second reflecting surface 73c is effectively reflected toward the emitting surface 74c. The second reflecting surface 73c has a substantially convex shape toward the rear side.

The emitting surface 74c forms the front surface of the fourth lens 70c together with the first reflecting surface 72c. That is, the exit surface 74c forms a part of the front surface of the fourth lens 70c. For example, the exit surface 74c forms the bottom front surface of the fourth lens 70c.

A side surface (not shown) connects the front surface of the fourth lens 70c and the rear surface of the fourth lens 70c. In other words, the side surface connects the first reflecting surface 72c and the emitting surface 74c to the second reflecting surface 73c. As described above, since the second reflecting surface 73c has a substantially convex shape toward the rear, the side surface connecting the front surface of the fourth lens 70c and the rear surface of the fourth lens 70c is thicker from the upper side to the lower side Is thinned.

The plurality of fourth group light sources 60c are disposed on the upper side of the fourth lens 70c and emit light toward the fourth lens 70c. The light emitted from the plurality of fourth group light sources 60c passes through the fourth lens 70c and then is irradiated forward of the vehicle to form a fourth beam pattern L3. Details of the fourth beam pattern will be described later.

The plurality of fourth group light sources 60c are installed so as to face the incident surface 71c and the entire surface of the fourth lens 70c. For example, a plurality of the fourth group light sources 60c are provided adjacent to the upper side of the incident surface 71c.

The plurality of fourth group light sources 60c are provided so as to emit light toward the incident surface 71c, the emitting surface 74c and the first reflecting surface 72c. As shown in FIG. 13, a plurality of the fourth group light sources 60c are disposed on the upper side of the fourth lens 70c, and are installed so as to irradiate light forwardly downwardly inclined.

Accordingly, a space for installing a heat sink (not shown) is formed on the upper side of the plurality of the fourth group light sources 60c. The heat sink is installed on the upper side of the plurality of fourth group light sources 60c to dissipate heat generated from the plurality of fourth group light sources 60c to the outside. Since the heat sinks are provided on the upper side of the plurality of the fourth group light sources 60c, the heat radiation efficiency of the plurality of the fourth group light sources 60c is improved.

The second light source module further includes a fifth lens 70b and a plurality of fifth group light sources 60b for emitting light.

As shown in Fig. 12, the fifth lens 70b is positioned between the third lens 70a and the fourth lens 70c. As will be described later, the fifth lens 70b irradiates the light emitted from the plurality of the fifth group light sources 60a forward of the vehicle to form a fifth beam pattern L2. Further, the fifth beam pattern L2 is formed at a distance from the vehicle to the fourth beam pattern L3, which will be described later, and is formed closer to the vehicle than the third beam pattern L1 (see Fig. 15).

11 to 12, the fifth lens 70b has an asymmetric shape in the up-down direction and the back-and-forth direction and has a first base surface 75b, an incident surface 71b, 72b, a second reflecting surface 73b, an emitting surface 74b, and a side surface.

Further, the fifth lens 70b irradiates the light emitted from the plurality of the fifth group light sources 60b toward the front of the vehicle to form a fifth beam pattern L2. At least a portion of the fifth beam pattern L2 overlaps the third beam pattern L1 and the fourth beam pattern L3 to form a low beam pattern L in front of the vehicle.

As shown in Fig. 12, the first base surface 75b and the incident surface 71b form the upper surface of the fifth lens 70b.

The incident surface 71b is a surface on which light emitted from the plurality of fifth group light sources 60b is incident and extends from the front side of the first base surface 75b and is directed forward As shown in Fig.

A plurality of fifth group light sources 60b are disposed on the incident surface 71b and the incident surface 71b is convex toward the plurality of fifth group light sources 60b. In other words, the incident surface 71b is formed into a curved surface convex upward. However, in some embodiments, the incident surface 71b may be formed in a flat plane. The front end of the incident surface 71b is connected to the upper end of the first reflecting surface 72b.

The first base surface 75b is formed to be substantially flat with the optical axis of the fifth lens 70b. The rear side of the third base surface is connected to the rear surface of the fifth lens 70b.

As shown in Figs. 12 and 13, the first reflection surface 72b and the emission surface 74b form the front surface of the fifth lens 70b.

The first reflection surface 72b forms an upper front surface of the fifth lens 70b and the emission surface 74b forms a lower front surface of the fifth lens 70b. The first reflecting surface 72b and the emitting surface 74b may be formed to be connected to each other.

As shown in Figs. 11 and 12, the first reflection surface 72b is formed in a convex curved surface shape in front of the entire fifth lens 70b in the first reflection surface 72b. The first reflective surface 72b may be formed of a metal layer such as aluminum or chromium having a high reflectance and may be emitted from a plurality of the fifth group light sources 60b The light incident into the fifth lens 70b through the incident surface 71b may be effectively reflected toward the rear surface of the fifth lens 70b.

And the second reflecting surface 73b forms at least a part of the rear surface of the fifth lens 70b. 13, the second reflecting surface 73b forms the entire rear surface of the fifth lens 70b, but the present invention is not limited thereto. The second reflecting surface 73b may be formed on the rear surface of the fifth lens 70b A part can be formed.

The second reflecting surface 73b is formed to connect the rear end of the first base surface 75b and the lower end of the emitting surface 74b and reflects the light incident on the second reflecting surface 73b to the emitting surface 74b do.

The second reflective surface 73b may also be configured such that a metal layer of aluminum or chromium having a high reflectance is deposited and the light incident on the second reflective surface 73b is effectively reflected toward the exit surface 74b. The second reflecting surface 73b has a substantially convex shape toward the rear side.

The emitting surface 74b forms the front surface of the fifth lens 70b together with the first reflecting surface 72b. That is, the exit surface 74b forms a part of the front surface of the fifth lens 70b. For example, the exit surface 74b forms the bottom front surface of the fifth lens 70b.

A side surface (not shown) connects the front surface of the fifth lens 70b and the rear surface of the fifth lens 70b. In other words, the side surface connects the first reflecting surface 72b and the emitting surface 74b to the second reflecting surface 73b. The side surface connecting the front surface of the fifth lens 70b to the rear surface of the fifth lens 70b is formed so as to become thicker from the upper side to the lower side as the second reflecting surface 73b has a substantially convex shape toward the rear, Is thinned.

The plurality of fifth group light sources 60b are disposed on the upper side of the fifth lens 70b and emit light toward the fifth lens 70b. The light emitted from the plurality of fifth group light sources 60b passes through the fifth lens 70b, and then is irradiated forward of the vehicle to form a fifth beam pattern L2. Details of the fifth beam pattern will be described later.

The plurality of fifth group light sources 60b are installed so as to face the incident surface 71b and the front surface of the fifth lens 70b. For example, a plurality of the fifth group light sources 60b are provided adjacent to the upper side of the incident surface 71b.

The plurality of fifth group light sources 60b are provided so as to emit light toward the incident surface 71b, the emitting surface 74b and the first reflecting surface 72b. As shown in FIG. 13, a plurality of the fifth group light sources 60b are disposed on the upper side of the fifth lens 70b, and are installed so as to irradiate light forward and downwardly inclined.

Accordingly, a space for installing a heat sink (not shown) is formed on the upper side of the plurality of fifth group light sources 60b. The heat sink is installed on the upper side of the plurality of the fifth group light sources 60b to dissipate the heat generated from the plurality of the fifth group light sources 60b to the outside. Since the heat sinks are provided on the upper side of the plurality of the fifth group light sources 60b, the heat radiation efficiency of the plurality of the fifth group light sources 60b is improved.

Hereinafter, the height of the second reflecting surfaces 73a to 73c is defined as the distance between the upper and lower ends of the second reflecting surfaces 73a to 73c. The thickness of each of the lenses 70a to 70c is defined as the maximum distance between the rear surface of the lenses 70a to 70c and the front surface of the lenses 70a to 70c.

3, the height Ha of the second reflective surface 73a of the third lens 70a is equal to the height Hc of the second reflective surface 73c of the fourth lens 70c, Is greater than the height Hb of the second reflecting surface 73b of the lens 70b. The height Hb of the second reflecting surface 73b of the fifth lens 70b is formed to be larger than the height Hc of the second reflecting surface 73c of the fourth lens 70c.

The thickness Wa of the third lens 70a is formed thinner than the thicknesses Wb and Wc of the fourth lens 70c and the fifth lens 70b as shown in Fig. The thicknesses Wb and Wc of the fourth lens 70c and the fifth lens 70b may be substantially the same.

Referring to Fig. 12, the vertical direction optical path of the light emitted from each of the light sources 60a to 60c will be described.

12, a part of the light emitted from each of the light sources 60a to 60c is incident into the lens through incident surfaces 71a to 70c, and then reflected by the first reflection surfaces 72a to 72c And is emitted from the lenses 70a to 70c through the exit surfaces 74a to 74c to be reflected by the second reflecting surfaces 73a to 73c and directed to the front of the vehicle, Thereby forming a pattern.

The other part of the light emitted from each of the light sources 60a to 60c enters the lens through the incident surfaces 71a to 71c and is totally reflected by the exit surfaces 74a to 74c to be incident on the second reflection surface 73a 73c and reflected by the second reflecting surfaces 73a to 73c and emitted from the lenses 70a to 70c via the emitting surfaces 74a to 74c to form a beam pattern irradiated to the front of the vehicle.

In one embodiment of the present invention, the exit surfaces 74a-74c of each lens are flat surfaces. The exit surfaces 74a to 74c of the respective lenses are arranged such that light emitted from the respective light sources 60a to 60c does not go toward the first reflection surfaces 72a to 72c but propagates toward the exit surfaces 74a to 74c Can be totally reflected toward the second reflecting surfaces 73a to 73c. However, in certain embodiments, the exit surfaces 74a-74c of each lens may be curved surfaces having a predetermined curvature.

The light emitted from each of the light sources 60a to 60c is reflected by the first reflection surfaces 72a to 72c and the second reflection surfaces 73a to 73c to be incident on the emission surfaces 74a to 74c, Is mostly irradiated to the front of the vehicle through the upper portions of the exit surfaces 74a to 74c. After the light emitted from each light source is totally reflected by the exit surfaces 74a to 74c and then reflected by the second reflection surfaces 73a to 73c and emitted to the exit surfaces 74a to 74c, 74a to 74c of the vehicle.

The light emitted from each of the light sources 60a to 60c is reflected by the first reflection surfaces 72a to 72c and the second reflection surfaces 73a to 73c to be incident on the emission surfaces 74a to 74c, The beams reflected by the first reflection surfaces 72a to 72c are relatively small in reflection angle, so that a beam pattern formed by the corresponding light is narrowly formed to form a beam pattern having a relatively high luminous intensity.

12, the light emitted from each of the light sources 60a to 60c is totally reflected on the exit surfaces 74a to 74c and then reflected by the second reflection surfaces 73a to 73c to be incident on the exit surface 74a To 74c are relatively large in reflection angle reflected from the outgoing surfaces 74a to 74c so that a beam pattern formed by the corresponding light is widely formed to form a beam pattern having a relatively weak light intensity.

14 is a view showing a low beam pattern formed in a second light source module of a vehicle headlamp according to an embodiment of the present invention.

As shown in Fig. 14, the first beam pattern L1 is made up of spot patterns formed at a distance ahead of the vehicle. Further, as described above, a shield 80 (see FIG. 13) in which a cut-off edge is formed between a plurality of third group light sources 60a (see FIG. 12) and a third lens 70a . Accordingly, the third beam pattern L1 includes a cut-off line. Further, the third beam pattern L1 is formed at a distance from the vehicle relative to the second beam pattern L3.

As shown in Fig. 14, the fourth beam pattern L3 is formed of a spread pattern formed near the front of the vehicle. Further, the fourth beam pattern L3 is formed near the vehicle in comparison with the third beam pattern L1.

As shown in Fig. 14, the fifth beam pattern L2 is formed near the vehicle in comparison with the third beam pattern L1. Further, the fifth beam pattern L2 may be formed at a distance from the vehicle in comparison with the fourth beam pattern L3. Accordingly, the fifth beam pattern L2 may be formed as a mid pattern formed between the spot pattern and the spread pattern.

As shown in FIG. 14, the fifth beam pattern L2 overlaps the entire third beam pattern L1. Further, the fourth beam pattern L2 overlaps the entire third beam pattern L1. In addition, the fourth beam pattern L3 overlaps the entire third beam pattern L1. Accordingly, the third beam pattern L1, the fourth beam pattern L3, and the fifth beam pattern L2 overlap each other to form a low beam pattern L (see Fig. 14) irradiated to the front of the vehicle .

Further, in a given embodiment, any one of the fourth beam pattern L3 and the fifth beam pattern L2 is formed to be eccentric to the right direction relative to the third beam pattern L1, and the fourth beam pattern L3 And the fifth beam pattern L2 may be eccentric in the left direction with respect to the third beam pattern L1. Therefore, when the fourth beam pattern L3 and the third beam pattern L1 are irradiated onto the screen, the fourth beam pattern L3 may be formed to be eccentric to the right side relative to the third beam pattern L1 have. In addition, when the fifth beam pattern L2 and the third beam pattern L1 are irradiated on the screen, the fifth beam pattern L2 may be formed to be eccentric to the left side relative to the third beam pattern L1 have.

Accordingly, the fourth beam pattern L3 and the fifth beam pattern L2 overlap the entire third beam pattern L1 on the screen, while the fourth beam pattern L3 and the fifth beam pattern L3 overlap each other Only a portion can be overlapped.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

1: vehicle headlamp 10: first lens
11: incident surface 12: first reflection surface
12a, 12b, 12c, 112a, 112b, 112c: bent portion 13:
14: exit surface 15: base surface
20 (21, 22, 23, 34, 25): first group light source 30: second lens
40 (41, 42, 43, 44, 45): second group light source 50:
60a: a plurality of third group light sources 60b: a plurality of fifth group light sources
60c: a plurality of fourth group light sources 70a: third lens
70b: fifth lens 70c: fourth lens
71a, 71b, 71c: incident surfaces 72a, 72b, 72c:
73a, 73b, 73c: second reflecting surfaces 74a, 74b, 74c:
75a, 75b, 75c: a first base surface
80: Shield

Claims (17)

A first light source module for irradiating a plurality of unit beam patterns individually blinkable in front of the vehicle to form a first light distribution pattern; And
And a plurality of second light source modules for irradiating light toward the front of the vehicle to form a second light distribution pattern,
Wherein the first light source module and the second light source module include:
A plurality of light sources for emitting light; And
And a lens for irradiating light emitted from the plurality of light sources to the front of the vehicle,
The lens,
An incident surface on which light emitted from the plurality of light sources is incident;
A first reflecting surface that forms part of a front surface of the lens and reflects light incident into the lens through the incident surface to the rear side of the lens;
An emergent surface forming a part of a front surface of the lens; And
And a second reflecting surface that forms at least a part of a rear surface of the lens and reflects the light reflected by the first reflecting surface toward the emitting surface. The method according to claim 1,
The first light distribution pattern is irradiated on the upper side of the cut-off line,
And the second light distribution pattern is irradiated to the lower side of the cut-off line. The method according to claim 1,
Wherein the plurality of light sources of the first light source module include a plurality of first group light sources and a plurality of second group light sources for emitting light,
The lens of the first light source module may include a first lens that forms a first beam pattern by irradiating light emitted from the plurality of first group light sources forward of the vehicle, And a second lens that forms a second beam pattern by irradiating the front side of the vehicle with the front side of the vehicle. The method of claim 3,
Wherein the second beam pattern is formed in the vicinity of the vehicle in comparison to the first beam pattern. The method of claim 3,
Wherein the second beam pattern is formed to be eccentric in either the right or left direction relative to the first beam pattern. The method of claim 3,
Wherein a part of the light emitted from the plurality of first group light sources,
And a second lens that passes through the entrance surface of the first lens and is reflected by the first reflection surface of the first lens, is reflected by the second reflection surface of the first lens, passes through the exit surface of the first lens Exited,
The other part of the light emitted from the plurality of first group light sources,
And the second lens is totally reflected by the exit surface of the first lens through the entrance surface of the first lens and is then reflected by the second reflection surface of the first lens and emitted from the first lens through the exit surface of the first lens , Headlamps for vehicles. The method of claim 3,
Wherein a part of the light emitted from the plurality of second group light sources,
And a second lens that is disposed on an exit surface of the second lens and is reflected from a second reflecting surface of the second lens, Exited,
The other part of the light emitted from the plurality of first group light sources,
Passes through the entrance surface of the second lens and is totally reflected by the exit surface of the second lens, is reflected by the second reflection surface of the second lens, and is emitted from the second lens through the exit surface of the second lens , Headlamps for vehicles. The method according to claim 1,
The lens of the second light source module includes a third lens and a fourth lens,
Wherein the plurality of light sources of the second light source module include a plurality of third group light sources for emitting light toward the third lens and a plurality of fourth group light sources toward the fourth lens,
Wherein the third lens forms a third beam pattern by irradiating light emitted from the plurality of third group light sources forward of the vehicle,
Wherein the fourth lens forms a fourth beam pattern which at least partially overlaps with the third beam pattern by irradiating light emitted from the plurality of fourth group light sources forward of the vehicle. 9. The method of claim 8,
Wherein the third beam pattern is formed at a distance of the vehicle relative to the fourth beam pattern. 9. The method of claim 8,
And the distance between the upper end and the lower end of the second reflecting surface of the third lens is formed to be larger than the distance between the upper end and the lower end of the second reflecting surface of the fourth lens. 9. The method of claim 8,
Wherein at least one of an exit surface of said third lens and an exit surface of said fourth lens is formed in a plane. 9. The method of claim 8,
The second light source module includes:
A plurality of fifth group light sources for emitting light; And
And a fifth lens for forming a fifth beam pattern by irradiating light emitted from the plurality of fifth group light sources,
Wherein at least a portion of the fifth beam pattern overlaps the third beam pattern and the fourth beam pattern. 13. The method of claim 12,
Wherein the third beam pattern is formed at a distance from the vehicle in comparison with the fifth beam pattern,
Wherein the fourth beam pattern is formed near the vehicle in comparison with the fifth beam pattern. 13. The method of claim 12,
Wherein the third beam pattern is formed at a distance from the vehicle in comparison with the fifth beam pattern,
Wherein one of the fourth beam pattern and the fifth beam pattern is eccentrically eccentric to the right in the third beam pattern,
And the other of the fourth beam pattern and the fifth beam pattern is formed to be eccentric in the leftward direction relative to the third beam pattern. 9. The method of claim 8,
Wherein a part of the light emitted from the plurality of third group light sources,
The third lens is reflected by the first reflection surface of the third lens, passes through the entrance surface of the third lens, is reflected by the second reflection surface of the third lens, passes through the exit surface of the third lens, Exited,
The other part of the light emitted from the plurality of third group light sources,
Passes through the entrance surface of the third lens and is totally reflected by the exit surface of the third lens, is reflected by the second reflection surface of the third lens, and is emitted from the third lens through the exit surface of the third lens , Headlamps for vehicles. 9. The method of claim 8,
Wherein a part of the light emitted from the plurality of fourth group light sources,
Passes through the entrance surface of the fourth lens, is reflected by the first reflection surface of the fourth lens, is reflected by the second reflection surface of the fourth lens, passes through the exit surface of the fourth lens from the fourth lens Exited,
And the other part of the light emitted from the plurality of fourth group light sources,
Passes through the entrance surface of the fourth lens and is totally reflected by the exit surface of the fourth lens, is reflected by the second reflection surface of the fourth lens, and is emitted from the fourth lens through the exit surface of the fourth lens , Headlamps for vehicles. The method according to claim 1,
Wherein the plurality of unit beam patterns is an adaptive driving beam pattern that is individually blinked according to a position of an opponent vehicle positioned in front of the vehicle.

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