KR20170062995A - Vehicle head lamp - Google Patents

Abstract

The present invention discloses a headlamp for a vehicle. The headlamp for a vehicle according to the present invention includes a light source, a reflector for reflecting light emitted from the light source, and a lens for refracting the reflected light to irradiate the light to the outside, wherein the reflected light is transmitted through a central portion of the lens , The light source and the reflector are arranged to be inclined downward opposite to the direction in which the light is transmitted with respect to the optical axis of the lens.

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 for improving a light pattern irradiated to the outside.

2. Description of the Related Art [0002] Generally, a vehicle is equipped with various types 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 notifying other vehicle or road users of the running state of the vehicle.

For example, head lamps and fog lamps are mainly aimed at lighting functions, while turn signal lamps, tail lamps, brake lamps, side markers and the like are mainly used for signal functions. In addition, such vehicle lamps are prescribed by laws and regulations on installation standards and specifications so that each function can be fully utilized.

Among such lamps, a headlamp which ensures the front view of the driver when the vehicle is traveling at night or in a dark place such as a tunnel is very important for safe driving.

A head lamp, also referred to as a headlamp, is an illuminating lamp that illuminates the course ahead of the vehicle and requires brightness to identify obstacles on the road at a distance of about 100 meters from the front at night.

In such a headlamp for a vehicle, the light directly irradiated by the light source and the light refracted through the reflecting surface move in the forward direction, and a part of the light is blocked by the cut-off formation at the upper end of the shield to form a predetermined beam pattern.

In addition, when the light ray passes through the aspherical surface lens of the vehicle headlamp, a large number of blue chromatic aberrations occur, resulting in deterioration of the quality of the headlamp for illuminating the front of the vehicle.

There is also a demand for a user that the high beam pattern irradiated to the outside of the front of the vehicle is a pattern directed to the front horizontal line when the vehicle headlamp is irradiated with light in the outside with a high beam pattern, which is somewhat inferior to securing the forward upward visibility.

Accordingly, it is required to provide a way to block the chromatic aberration generated in the headlamp for the vehicle, and further, it is necessary to further improve the securing of the upside view of the front of the vehicle while blocking the chromatic aberration in the headlamp for the vehicle.

Korean Patent Publication No. 10-2015-0072208 (June 27, 2015)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a headlamp for a vehicle which is optically designed to allow most optical rays to pass through the center of a lens of a headlamp for a vehicle so as to block chromatic aberration generated in a headlamp for a vehicle. Lamps.

Another object of the present invention is to provide an optical design for complementing the upstream light enhancement pattern of the vehicle so as to further improve the securing of the upward visibility of the front of the vehicle while blocking the chromatic aberration generated in the vehicle headlamp The present invention provides a headlamp for a vehicle further comprising an additional reflector structure.

The objects of the present invention are not limited to the above-mentioned problems, and other objects 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 including a light source, a reflector for reflecting light emitted from the light source, and a lens for refracting the reflected light to irradiate the reflected light to the outside, The light source and the reflector are arranged to be inclined downwardly opposite to the direction in which the light is transmitted, with respect to the optical axis of the lens so as to be able to transmit the center portion of the lens.

The position of the light source may be disposed at a point where an intersection orthogonal to the optical axis of the lens and the vertical axis of the light source is formed outside the reflector.

The central portion of the lens is a lens region other than an outer region of the lens where chromatic aberration is caused when the reflected light passes through the lens.

The tilted angle of the light source and the reflector may correspond to the ratio of the reflected light toward the center of the lens.

The light emitted from the light source is for a high beam pattern or for a low beam pattern.

A first additional reflector formed on an upper front end portion of the reflector, and a second additional reflector receiving the light reflected by the first additional reflector and reflecting the light reflected by the center portion of the lens to pass through an upward beam generating region .

The second additional reflection plate may have a shape separated from the reflector of the reflector and be inclined downward with respect to the optical axis of the lens.

The second additional reflector may be disposed after the focal point where the reflected light from the reflector of the reflector is focused.

The light emitted from the light source is for a high beam pattern.

The reflector of the reflector, the first additional reflector, and the second additional reflector may be provided with a predetermined curvature.

Each reflector may be provided with a different curvature, or the reflector of the reflector and each additional reflector may be provided with different curvatures.

The first additional reflector may have a smaller curvature than the reflector of the reflector.

The second additional reflector may be tilted to a slope at which light reflected from the first additional reflector reaches.

The second additional reflector may have a larger area than the first additional reflector.

The step difference between the first additional reflector and the reflector reflector may increase as the distance from the center of the first additional reflector increases.

Therefore, in the present invention, it is possible to effectively block the chromatic aberration generated in the vehicle headlamp by providing the optical headlamp which is optically designed so that most of the light ray passes through the lens center of the headlamp of the vehicle so as to block the chromatic aberration generated in the vehicle headlamp .

Further, the optical design further includes an additional reflector structure for supplementing the upward light enhancement pattern of the vehicle so as to further improve the upside view of the front of the vehicle while blocking the chromatic aberration generated in the vehicle headlamp By providing the headlamp for a vehicle, there is an advantage that the chromatic aberration can be blocked in the headlamp for a vehicle, and the upside view of the vehicle ahead can be further secured.

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 vehicle side view showing a vehicle headlamp of the present invention.
2 is a block diagram showing an example of the internal structure of the vehicle headlamp shown in Fig.
3 is a configuration diagram showing an example of a light source and a reflector arrangement of the vehicle headlamp shown in Fig.
4 is an exemplary view showing an example in which most of the light rays are concentrated at the center of the lens through the vehicle headlamp of Fig.
Fig. 5 is a diagram showing a more specific example of the lens area of Fig. 4;
Fig. 6 is a configuration diagram showing another example of the internal structure of the vehicle headlamp shown in Fig. 1. Fig.
FIG. 7 is an exemplary view showing an example in which most of the photoresists are concentrated at the center of the lens through the vehicle headlamp of FIG. 6. FIG.
FIG. 8 is a configuration diagram showing a reflective structure for upward adjustment through the vehicle headlamp of FIG. 6; FIG.
Fig. 9 is a perspective view showing the internal structure of the headlamp for a vehicle in Fig. 6 in three dimensions; Fig.
10 is a side view of the lamp interior structure shown in Fig.
Fig. 11 is an enlarged view of the light reflection structure of the lamp internal structure shown in Fig. 9. Fig.
12 is a side view of the light reflection structure shown in Fig.
FIG. 13 is a front perspective view of a shape having a light reflection structure as an integrated module in the lamp internal structure shown in FIG. 9. FIG.
14 is a rear perspective view of the integral module shape shown in Fig.
15 is a cross-sectional view of the integral module configuration shown in Fig.
Fig. 16 is a front view showing the shape of the first additional reflector shown in Fig. 13 or Fig. 14 more specifically.
FIG. 17 is an exemplary view showing an example of a beam pattern in which upward visibility is improved by the vehicle headlamp of FIG. 6. FIG.
Fig. 18 is an exemplary diagram showing the beam pattern of Fig. 17 in a more specific graphical form.

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 being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Like reference numerals refer to like elements throughout the specification. "And / or" include each and every combination of one or more of the mentioned items.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that the terms "comprises" and / or "comprising" used in the specification are intended to be inclusive in a manner similar to the components, steps, operations, and / Or additions.

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

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

1 is a vehicle side view showing a vehicle headlamp of the present invention.

As shown in FIG. 1, in order to prevent chromatic aberration generated in the vehicle headlamp 100, most of the light rays are passed through the lens center of the vehicle headlamp 100, A vehicle headlamp (100) having an optically designed structure is provided.

The headlamp 100 for a vehicle further includes a further reflector plate structure for compensating for the upward light enhancement pattern of the vehicle ahead to further improve the upside visibility of the front of the vehicle while blocking the chromatic aberration generated in the headlamp 100 for the vehicle It is also possible to provide a headlamp 100 for a vehicle which is further included.

Here, the chromatic aberration refers to aberration caused by the difference in refractive index depending on the wavelength, and refers to a phenomenon that occurs when light having a long wavelength is focused on the far side of the lens after passing through the lens.

As the wavelength of light increases, the refractive index of glass becomes smaller as the wavelength of light increases. Therefore, when the image of the object is made through the lens, the position or magnification of the image changes depending on the color of the object (wavelength of light). This phenomenon is a chromatic aberration. When white light is viewed through a lens with chromatic aberration, the longer the wavelength of near red light is, the farther the focus is from the lens. The shorter the wavelength of light is, the closer the focus is to the lens. see.

The chromatic aberration generated in the vehicle headlamp 100 is a phenomenon in which the chromatic aberration occurs because the refractive index differs depending on the wavelength of the light. When the light reflected by the light source passes through the lens outer side of the headlamp 100 for a vehicle, A phenomenon that chromatic aberration of color is caused a lot occurs.

The lens of the vehicle headlamp 100 is usually an aspherical lens, and the curvature of the lens center portion and the lens outer side portion are different. As a result, when the light reflected by the light source passes through the outer side of the lens, chromatic aberration due to the difference in refractive index with respect to the lens center is generated.

A bulb may be used as a light source of the headlamp 100 for a vehicle, and a light emitting diode or the like may be used.

When a light source of a light emitting diode type is used as a light source of the headlamp 100 for a vehicle, since the short wavelength light is used, the blue light is most refracted when the reflected light of the light source passes through the outer side of the lens And a number of blue color aberrations are induced.

2 to 5, a structure of a headlamp for a vehicle for blocking the chromatic aberration described above will be described in detail. FIGS. 6 to 17 show the structure of a headlamp for blocking upward chromatic aberration The configuration will be described in detail.

2 is a block diagram showing an internal structure of the vehicle headlamp 110 shown in FIG.

2, the vehicle headlamp 110 includes a light source 111, a reflector 112 for reflecting the light of the light source 111, and a lens 113 for refracting the reflected light to irradiate the light to the outside, The light source 111 and the reflector 112 are inclined with respect to the optical axis of the lens 113 so that light reflected from the reflector 112 passes through the center of the lens 113. [

The light source 111 is inclined at a predetermined angle in the counterclockwise direction with respect to the optical axis of the lens 113. The inclined angle of the light source 111 is preferably set so that the light from the light source 111 reflects the reflecting surface of the reflector 112 and is mostly directed toward the center of the lens 113. [

The central portion of the lens 113 refers to the area of the lens 113 excluding the area outside the lens 113 where chromatic aberration is caused when light reflected from the reflector 112 passes through the lens 113, Most of the area of the lens 113 where no light is generated.

When the tilted angle of the light source 111 is excessively inclined with respect to the optical axis of the lens 113, most of the light reflected from the reflector 112 will be directed to a narrow area of a narrow width from the optical axis of the lens 113, It is not appropriate since a beam pattern for illuminating the front side can not be formed.

When the tilted angle of the light source 111 is inclined at a too low slope with respect to the optical axis of the lens 113, the light reflected from the reflector 112 is reflected by the lens 113 It is not suitable because it frequently goes to the outer region.

Therefore, it is preferable that the inclined angle of the light source 111 is set to a level that allows the light reflected from the reflector 112 to be directed by excluding only the area outside the lens 113 where the chromatic aberration is caused in the lens 113.

The reflector 112 is arranged to be inclined at a predetermined angle in the counterclockwise direction with respect to the optical axis of the lens 113.

The inclined angle of the reflector 112 is preferably set to an angle such that the light from the light source 111 reflects the reflecting surface of the reflector 112 and is mostly directed toward the center of the lens 113.

When the tilted angle of the reflector 112 is excessively inclined with respect to the optical axis of the lens 113, most of the light reflected from the reflector 112 will be directed to a narrow area of a narrow width from the optical axis of the lens 113, It is impossible to form a beam pattern for uniformly illuminating the front side.

When the tilted angle of the reflector 112 is inclined at a too low slope with respect to the optical axis of the lens 113, the light reflected from the reflector 112 is reflected by the lens 113 It is not suitable because it frequently goes to the outer region.

Therefore, it is preferable that the tilted angle of the reflector 112 is set to a level that allows light reflected from the reflector 112 to be directed by excluding only the area outside the lens 113 where chromatic aberration is caused in the lens 113.

That is, since the tilted angle of the reflector 112 is related to the adjustment of the angle of the reflection surface of the light generated from the light source 111, it is closely related to the tilted angle of the light source 111.

The inclined angle of the reflector 112 and the inclined angle of the light source 111 are set differently so that the light generated from the light source 111 is reflected by the reflecting surface of the reflector 112 and directed toward the center of the lens 113 The inclined angle of the reflector 112 and the inclined angle of the light source 111 are set to be the same so that the light generated from the light source 111 is reflected by the reflecting surface of the reflector 112 and directed toward the center of the lens 113 It is possible to do.

In this case, when the inclined angle of the reflector 112 and the inclined angle of the light source 111 are set to the same, the light generated from the light source 111 is uniformly reflected on the reflecting surface of the reflector 112, And it is preferable that the ratio of the light emitted from the light source 111 to the outside without loss is improved.

When the inclined angle of the reflector 112 and the inclined angle of the light source 111 are set to the same value, the structure in which the reflector 112 and the light source 111 are mounted in the assembly process of the vehicle headlamp 110 The vehicle headlamp 110 of the present invention can be assembled more easily by adjusting the inclination of the structure or setting a predetermined inclination of the structure after the reflector 112 and the light source 111 are mounted.

3 is a configuration diagram showing an example of the arrangement of the light source 111 and the reflector 112 of the headlamp 110 for a vehicle shown in Fig.

3, the position of the light source 111 in the vehicular headlamp 110 is arranged at a point where an intersection orthogonal to the optical axis of the lens 113 and the vertical axis of the light source 111 is formed outside the reflector 112 .

Here, the point where the intersection is formed on the outside of the reflector 112 refers to an upper position close to the curved surface corresponding to the reflecting surface of the reflector 112.

The point where the intersection is formed outside the reflector 112 is a parameter combined with the tilt level of the light source 111 and the reflector 112 and corresponds to the distance between the center of the lens 113 and the lens 113, Can be utilized as a main parameter for determining the tilt level of the reflector 111 and the reflector 112. [

4 is an exemplary view showing an example in which most of the light rays are concentrated at the center of the lens 113 through the vehicle headlamp 110 of FIG.

4, the central portion of the lens 113 is a region excluding the regions A and B which are the outer regions of the lens 113 in which chromatic aberration is induced. The tilted angle of the light source 111 and the reflector 112 may correspond to the ratio of the light reflected from the reflector 112 to the center of the lens 113.

As a parameter for determining the tilt level of the light source 111 and the reflector 112 in correspondence with the distance between the center of the lens 113 and the lens 113, the light reflected from the reflector 112 is collected The focal point is formed not at the inner space surrounded by the reflecting surface of the reflector 112 but at a position near the reflector 112 in the forward direction in which the lens 113 is located apart from the inner space surrounded by the reflecting surface of the reflector 112 Can be utilized.

At this time, the tilt level of the light source 111 and the reflector 112 can be determined more precisely by accurately calculating the distance that the focal position close to the reflector 112 is away from the end of the reflector 112. [

When assembling of the light source 111 and the reflector 112 is completed without confirming light reaching the lens 113 at the time of assembling the headlamp 110 for a vehicle, power is applied to the light source 111 It is possible to make a rough determination as to whether or not the tilt level of the light source 111 and the reflector 112 is appropriately determined by grasping the position where the focus is formed.

5 is a diagram showing a lens 113 area of FIG. 4 in a more specific example.

As shown in FIG. 5, the lens 113 of the headlamp 110 for a vehicle may be provided with an aspherical lens 113.

5 is a central portion of the lens 113, and the region (2) shown in FIG. 5 is an outer region of the lens 113 described above. As described above, the first region and the second region can be distinguished based on the refractive index difference of the aspherical lens 113.

In the vehicle headlamp 110, the light of the light source 111 may be for generating a high beam pattern or for generating a low beam pattern.

That is, when the light of the light source 111 is irradiated to the outside of the front of the vehicle in order to generate the high beam pattern, the light of the light source 111 is reflected from the reflector 112 and passes through the region 1 of the lens 113 It is preferable to be irradiated to the outside of the front of the vehicle. When the light reflected from the reflector 112 is irradiated to the outside through the region 2, light is dispersed and chromatic aberration is generated.

Similarly, in order to generate a low beam pattern, when the light of the light source 111 is irradiated to the outside of the front of the vehicle, the light of the light source 111 is reflected from the reflector 112, It is preferable to be irradiated to the outside of the front of the vehicle. When the light reflected from the reflector 112 passes through the region 2 and is irradiated to the outside even when the light beam is a low beam pattern, the light is dispersed and chromatic aberration may be generated. In order to block the chromatic aberration, the light reflected from the reflector 112 (2) It is not appropriate to irradiate outside through the area.

Fig. 6 is a configuration diagram showing another example of the internal structure of the vehicle headlamp shown in Fig. 1. Fig.

6, the vehicle headlamp 120 includes a light source 121, a reflector 122 for reflecting the light of the light source 121, a lens 123 for refracting the reflected light to irradiate the light to the outside, a reflector 122 And a second additional reflector 124 for receiving the light reflected by the first additional reflector 124 and reflecting the light to be passed through the center of the lens 123 to the upward beam generating area And a second additional reflection plate 125.

At this time, the light source 121 and the reflector 122 are inclined with respect to the optical axis of the lens 123 so that light reflected from the reflector 122 passes through the center of the lens 123.

The light source 121 is inclined at a predetermined angle in the counterclockwise direction with respect to the optical axis of the lens 123. The inclined angle of the light source 121 is preferably set so that the light of the light source 121 reflects the reflecting surface of the reflector 122 and is mostly directed toward the center of the lens 123.

The central portion of the lens 123 refers to the area of the lens 123 excluding the area outside the lens 123 where the chromatic aberration is caused when the light reflected from the reflector 122 passes through the lens 123, Most of the area of the lens 123 where no light is generated.

When the tilted angle of the light source 121 is excessively inclined with respect to the optical axis of the lens 123, most of the light reflected from the reflector 122 will be directed to a narrow area of a narrow width from the optical axis of the lens 123, It is not appropriate since a beam pattern for illuminating the front side can not be formed.

When the tilted angle of the light source 121 is inclined at a too low slope with respect to the optical axis of the lens 123, the light reflected from the reflector 122 is reflected by the lens 123 It is not suitable because it frequently goes to the outer region.

Therefore, it is preferable that the tilted angle of the light source 121 is set to a level at which the light reflected from the reflector 122 is directed by excluding only the outer region of the lens 123 from which the chromatic aberration is caused in the lens 123.

The reflector 122 is inclined at a predetermined angle in the counterclockwise direction with respect to the optical axis of the lens 123.

The inclined angle of the reflector 122 is preferably set to an angle such that the light from the light source 121 reflects the reflecting surface of the reflector 122 and mostly directed toward the center of the lens 123. [

When the tilted angle of the reflector 122 is excessively inclined with respect to the optical axis of the lens 123, most of the light reflected from the reflector 122 will be directed to a narrow area of a narrow width from the optical axis of the lens 123, It is impossible to form a beam pattern for uniformly illuminating the front side.

When the tilted angle of the reflector 122 is inclined at a too low slope with respect to the optical axis of the lens 123, the light reflected from the reflector 122 is reflected by the lens 123 It is not suitable because it frequently goes to the outer region.

Therefore, it is preferable that the inclined angle of the reflector 122 is set to a level that allows light reflected from the reflector 122 to be directed by excluding only the outer region of the lens 123 where the chromatic aberration is caused in the lens 123.

That is, since the tilted angle of the reflector 122 is related to the adjustment of the angle of the reflection surface of the light generated from the light source 121, it is closely related to the tilted angle of the light source 121.

The inclined angle of the reflector 122 and the inclined angle of the light source 121 are set differently so that the light generated from the light source 121 is reflected by the reflecting surface of the reflector 122 and directed toward the center of the lens 123 The light emitted from the light source 121 is reflected by the reflecting surface of the reflector 122 and directed toward the center of the lens 123 by setting the tilted angle of the reflector 122 and the tilted angle of the light source 121 to be the same It is possible to do.

In this case, when the inclined angle of the reflector 122 and the inclined angle of the light source 121 are set to the same, the light generated from the light source 121 is uniformly reflected on the reflecting surface of the reflector 122, And it is preferable that the ratio of the light emitted from the light source 121 to the outside without loss is improved.

When the inclined angle of the reflector 122 and the inclined angle of the light source 121 are set to the same value, the structure in which the reflector 122 and the light source 121 are mounted in the process of assembling the headlamp 120 for a vehicle The vehicle headlamp 120 of the present invention can be assembled more easily by adjusting the inclination of the structure or setting the predetermined inclination of the structure after the reflector 122 and the light source 121 are mounted.

The second additional reflection plate 125 is in a shape separated from the reflector of the reflector 122 and can be disposed inclined downward with respect to the optical axis of the lens 123.

FIG. 7 is an exemplary view showing an example in which most of the photoresists are concentrated at the center of the lens 123 through the headlamp 120 for a vehicle shown in FIG.

7, the center portion of the lens 123 is an area excluding the C and D regions which are the outer regions of the lens 123 in which the chromatic aberration is induced. The tilted angle of the light source 121 and the reflector 122 may correspond to the ratio of the light reflected from the reflector 122 to the center of the lens 123. [

As a parameter for determining the tilt level of the light source 121 and the reflector 122 in correspondence with the distance between the center of the lens 123 and the lens 123, the light reflected from the reflector 122 is collected The focal point is formed not at the inner space surrounded by the reflecting surface of the reflector 122 but at the position near the reflector 122 in the forward direction in which the lens 123 is located apart from the inner space surrounded by the reflecting surface of the reflector 122 Can be utilized.

At this time, the tilt level of the light source 121 and the reflector 122 can be determined more precisely by accurately calculating the distance of the focal point position close to the reflector 122 from the end of the reflector 122. [

FIG. 8 is a configuration diagram showing a reflective structure for adjusting the upward sense through the headlamp 120 for a vehicle shown in FIG.

As shown in Fig. 8, the second additional reflector 125 may be disposed separately from the reflector 122 after the focal point where the light reflected from the reflector of the reflector 122 is focused.

It is possible to add an upward direction to the light pattern irradiated to the front of the vehicle through the second additional reflecting plate 125 and the first additional reflecting plate 124 having a structure extending from the upper front end portion of the reflector 122. [

8, the total amount of the light from the light source 121 reflected by the reflecting surface of the reflector 122 is mostly evenly passed through the center of the lens 123. That is, the light ray passing through the center portion of the lens 123 will be different depending on which point of the reflection surface of the reflector 122 is reflected and the light from the light source 121 is reflected.

On the other hand, when the light from the light source 121 reaches the first additional reflector 124 extending forward from the upper front end of the reflector 122, the light reaching the first additional reflector 124 reaches the first The light reflected from the additional reflector 124 and directed back to the second additional reflector 125 and then reflected again from the second additional reflector 125 passes through the center of the lens 123 into the upward beam generating area do.

Accordingly, in the case where the vehicle headlamp 120 further includes the first additional reflector 124 and the second additional reflector 125, the light reflector may be configured to increase the light pattern irradiated to the front of the vehicle It is necessary that the light of the light source 121 be limited to the formation of a high beam pattern. Of course, even when the vehicle headlamp 120 further includes the first additional reflector 124 and the second additional reflector 125, the light from the light source 121 is also applied to the formation of the low beam pattern, The upward feeling of the pattern can be compensated.

Fig. 9 is a perspective view showing the internal structure of the headlamp 120 for a vehicle in Fig. 6 in a stereoscopic manner, Fig. 10 is a side view of the lamp internal structure shown in Fig. 9, Fig.

9 to 11, the position of the light source 121 in the vehicle headlamp 120 is determined such that an intersection orthogonal to the optical axis of the lens 123 and the vertical axis of the light source 121 intersects the outside of the reflector 122 As shown in Fig.

The reflector 122, the first additional reflector 124, and the second additional reflector 125 may have a predetermined curvature, and each reflector may have a different curvature. Alternatively, the reflector 122, May be provided with different curvatures.

Here, if the reflector of the reflector 122 is compared with the first additional reflector 124, the first additional reflector 124 may be provided with a relatively smaller curvature than the reflector of the reflector 122.

The second additional reflecting plate 125 has a curved surface in accordance with an optical design for reflection of light, but it is not a horizontally spreading pattern of a beam pattern added to compensate for upward feeling among the light patterns irradiated to the front of the vehicle To form beam patterns concentrated within a certain upward range.

Therefore, even if the light reflected from the first additional reflector 124 reaches the second additional reflector 125 with a limited amount of light, considering that the amount of light reflected from the first additional reflector 124 is limited, 2 The light received through the curved structure of the additional reflector 125 is gathered to pass through the upward beam generating region of the center portion of the lens 123, so that the upward direction of the light pattern irradiated to the front of the vehicle can be further improved.

12 is a side view of the light reflection structure shown in Fig.

As shown in FIG. 12, the second additional reflection plate 125 is preferably inclined at a slope to receive only the light reflected from the first additional reflection plate 124.

That is, when the second additional reflection plate 125 receives the light reflected from the reflector 122, the light refracted by reflecting the light reflected from the reflector 122 is reflected by the lens 123 ) To reach the outer region of the light guide plate, thereby causing a chromatic aberration. Therefore, it is preferable that the second additional reflection plate 125 is disposed to be inclined so that the light reflected from the reflector 122 is not reached.

FIG. 13 is a front perspective view of a light reflection structure of the lamp internal structure shown in FIG. 9 as an integrated module, and FIG. 14 is a rear perspective view of the integrated module shape shown in FIG.

As shown in Figs. 13 and 14, the reflecting surface of the reflector 122, the first additional reflecting plate 124, and the second additional reflecting plate 125 may be provided as an integral module shape. As described above, when the automotive head lamp 120 is assembled, the efficiency of mounting the reflector 122, the first additional reflection plate 124, and the second additional reflection plate 125 can be increased.

In addition, the inclination setting of the first additional reflector 124 and the second additional reflector 125 should be set to a predetermined level, but it is not easy to assemble them according to the set values when assembling them as separate components , It is advantageous in that it is provided as an integral module shape.

15 is a cross-sectional view of the integral module configuration shown in Fig.

15, it can be seen that the curvature of the first additional reflector 124 is different from that of the first additional reflector 124 and that the curvature of the first additional reflector 124 is different from that of the reflector 122 And is provided with a relatively small curvature. This further spreads the light of the light source 121 reaching the first additional reflection plate 124 to be transmitted to the second additional reflection plate 125.

Fig. 16 is a front view showing the shape of the first additional reflector shown in Fig. 13 or Fig. 14 more specifically.

As shown in FIG. 16, as the distance from the center of the first additional reflector 124 to the left and right increases, the step height of the first additional reflector 124 with respect to the reflecting surface of the reflector 122 may become larger.

That is, the first additional reflection plate 124 is provided with a curvature different from that of the reflector reflection surface confirmed in the side view as shown in Fig. 15 as compared with the reflection surface of the reflector 122, And the curvature may be different from that of the reflector reflecting surface. Furthermore, as described above, the first additional reflecting plate 124 may be provided in a shape having a specific stepped portion with respect to the reflecting surface of the reflector 122.

FIG. 17 is an exemplary view showing an example of a beam pattern in which upward visibility is improved through the vehicle headlamp 120 of FIG. 6, and FIG. 18 is an exemplary diagram showing a beam pattern of FIG. 17 in more detail.

17 and 18, the light pattern irradiated to the front of the vehicle through the vehicle headlamp 120 can be changed from the existing pattern a to the present invention application pattern b.

As can be seen from the application pattern (b) of the present invention, it can be confirmed that the high-beam pattern is clearly enhanced as compared with the existing pattern (a).

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

Further, the present invention provides an additional reflector structure for supplementing the optical pattern for upward visibility improvement of the vehicle in the above-described optical design so as to further improve the securing of the upward visibility of the front of the vehicle while blocking the chromatic aberration generated in the vehicle headlamp The present invention is industrially applicable because it is intended to provide a headlamp for a vehicle including a vehicle headlamp which is more likely to be commercially available or operable and can be practically and practically carried out.

100, 110, 120: head lamps for vehicles
111, 121: Light source
112, 122: Reflector
113, 123: lens
124: first additional reflector
125: second additional reflector

Claims (15)

Light source;
A reflector for reflecting the light emitted from the light source; And
And a lens for refracting and irradiating the reflected light to the outside,
Wherein the light source and the reflector are arranged to be inclined downwardly opposite to a direction in which the light is transmitted, with respect to an optical axis of the lens so that the reflected light can pass through the center portion of the lens. The method according to claim 1,
Wherein a position of the light source is disposed at a point where an intersection orthogonal to the optical axis of the lens and the vertical axis of the light source is formed outside the reflector. The method according to claim 1,
Wherein a central portion of the lens is a lens region excluding an outer region of the lens where chromatic aberration is caused when the reflected light passes through the lens. The method according to claim 1,
Wherein the inclined angle of the light source and the reflector corresponds to the ratio of the reflected light to the center of the lens. The method according to claim 1,
Wherein the light emitted from the light source is for a high beam pattern or for a low beam pattern. The method according to claim 1,
A first additional reflection plate formed on an upper front end portion of the reflector; And
Further comprising a second additional reflector for receiving and reflecting the light reflected by the first additional reflector to pass through the upward beam generating area of the center of the lens. The method according to claim 6,
Wherein the second additional reflection plate is in a shape separated from a reflector of the reflector and is inclined downward with respect to an optical axis of the lens. 8. The method according to claim 6 or 7,
And the second additional reflection plate is separately disposed after the focal point in which the light reflected from the reflector of the reflector is concentrated. The method according to claim 6,
Wherein the light emitted from the light source is for a high beam pattern. The method according to claim 6,
Wherein the reflector of the reflector, the first additional reflector, and the second additional reflector are provided with a predetermined curvature. 11. The method of claim 10,
Wherein each reflector is provided with a different curvature, or the reflector of the reflector and each additional reflector are provided with different curvatures. 12. The method of claim 11,
Wherein the first additional reflector is provided with a smaller curvature than the reflector of the reflector. The method according to claim 6,
And the second additional reflecting plate is inclinedly disposed at a slope at which light reflected from the first additional reflecting plate reaches. The method according to claim 6,
Wherein the second additional reflector is provided in a larger area than the first additional reflector. The method according to claim 6,
Wherein the step difference between the first additional reflector and the reflector reflector increases as the distance from the center of the first additional reflector increases.

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