KR101638323B1 - Head lamp assembly and head lamp apparatus for using it - Google Patents

Abstract

A head lamp assembly and a head lamp device using the same are provided. A head lamp assembly according to an embodiment of the present invention includes a light source unit including a first LED module and a second LED module; And a lens portion including a first lens and a second lens, wherein light emitted from the light source portion passes through the second lens and is transmitted through the first lens, and the second lens transmits the first and second And a second exit surface through which the light emitted from the second LED module is emitted, wherein the light emitted from the first LED module is reflected by the first exit surface,

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a head lamp assembly,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headlamp assembly and a headlamp apparatus using the same, and more particularly, to a headlamp assembly and a headlamp assembly using the same, which can increase the irradiation range of light while simplifying the configuration.

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

For example, a headlamp may be a high beam that illuminates the light away from the field of view, a low beam that lowlights the light to prevent the driver of the vehicle traveling ahead and the driver of the vehicle against glare, . ≪ / RTI >

In recent years, headlamps using LEDs (light emitting diodes) as a light source of headlamps have been manufactured due to the rapid development of high-brightness LEDs. In particular, a headlamp of a direct light type does not have a reflector that collects light emitted from an LED, which is a light source, at one point, and directs the light emitted from the LED through a direct lens.

In the case of installing a light source or the like in addition to a lighting function for easily confirming an object located in the vicinity of the vehicle in such a direct light type headlamp so as to have a signal function for informing the driving conditions of the vehicle to other vehicles or road users, The configuration of the lamp becomes complicated and the cost may be increased. Accordingly, there is a demand for a method capable of increasing the light irradiation range while simplifying the structure of the direct-light type headlamp.

European Published Patent EP 2306074 (Published April 4, 2011) U.S. Published patent application US 2013/0208493 (published on Aug. 15, 2013) U.S. Published Patent Application No. US 2014/0169015 (published on June 19, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a head lamp assembly capable of increasing the irradiation range of light while simplifying the structure of the integrated type and a head lamp device using the same.

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

According to an aspect of the present invention, there is provided a head lamp assembly including: a light source unit including a first LED module and a second LED module; And a lens portion including a first lens and a second lens, wherein light emitted from the light source portion passes through the second lens and is transmitted through the first lens, and the second lens transmits the first and second An incident surface on which light emitted from the LED module is incident, a first emitting surface through which light emitted from the first LED module is emitted, and a second emitting surface through which light emitted from the second LED module is emitted.

The first LED module may include a plurality of LED elements, and the second LED module may include a smaller number of LED elements than the first LED module.

The first lens may include a convex surface formed to be convex on one side and emitting light, and an incident surface on which light emitted through the second lens is incident.

In addition, the incident surface of the first lens may have a flat shape at the center, and at least one edge portion of both the edge portions may have a curved shape.

In addition, the convex surface of the first lens may include at least one region having a different curvature from the other region.

In the second lens, the incident surface may be formed flat.

In addition, the first and second exit surfaces of the second lens may be formed to be convex.

In addition, at least one of the first and second exit surfaces may be formed asymmetrically convex.

The first lens may be formed of a plastic material, and the second lens may be formed of at least one of a plastic material and a glass material.

In the second lens, the center of the first exit surface coincides with the center of the first LED module, and the center of the second exit surface may not coincide with the center of the second LED module.

The light emitted from the center of the surface of the first LED module passes through the center of the surface of the first emitting surface, It can pass through the plane center of the plane.

When only the first LED module is lit or when the first LED module and the second LED module are all lit, the first beam is irradiated. When only the second LED module is lit, the second beam is irradiated You can investigate.

And, the first beam may be one beam of a high beam or a low beam, and the second beam may be a positioning beam.

According to another aspect of the present invention, there is provided a head lamp apparatus comprising: a head lamp assembly disposed inside a front portion of a vehicle, the head lamp assembly including at least one head lamp assembly, assembly; And a second head lamp assembly disposed outside the front of the vehicle, the second head lamp assembly being at least one head lamp assembly among the head lamp assemblies according to various embodiments of the present invention, wherein the first head lamp assembly includes: Wherein the center of the convex surface of the convex surface of the first LED module is offset from the center of the surface of the first LED module and is biased toward the inside of the vehicle, And is biased toward the outside of the vehicle.

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

According to the present invention, the configuration of the headlamp can be simplified.

In addition, the shape of the lens can be convex, and the exit surface of the lens can be divided into various areas to increase the light irradiation range.

1 is a top view of a head lamp assembly according to an embodiment of the present invention.
2 is a side view of a head lamp assembly according to an embodiment of the present invention.
3 to 5 are perspective views of a head lamp assembly according to an embodiment of the present invention, viewed from various directions.
6 is a top view of a path of light irradiated from a head lamp assembly according to an embodiment of the present invention.
7 is a side view of a path of light irradiated from a head lamp assembly according to an embodiment of the present invention.
8 is a view showing the relationship between the center of a light source in a head lamp assembly according to an embodiment of the present invention and the plane center of a lens through which light emitted from the light source passes.
9 is a view illustrating a headlamp apparatus using a headlamp assembly according to an embodiment of the present invention.

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

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

1 is a top view of a head lamp assembly according to an embodiment of the present invention. 2 is a side view of a head lamp assembly according to an embodiment of the present invention. 3 to 5 are perspective views of a head lamp assembly according to an embodiment of the present invention, viewed from various directions.

1 to 5, a head lamp assembly 10 according to an embodiment of the present invention includes a light source 100 including a first LED module 110 and a second LED module 120, And a lens unit 200 including a first lens 210 and a second lens 220. That is, the headlamp assembly 10 according to an embodiment of the present invention does not include a reflector that collects light emitted from an LED element as a light source at one point, and irradiates the irradiated light directly through the lenses 210 and 220 Which is a direct type lamp assembly. The light emitted from the light source unit 100 passes through the second lens 220 and transmits through the first lens 210 and the second lens 220 passes through the first and second LED modules 110 and 120, The light emitted from the first emitting surface 221 and the second LED module 120 on which the light emitted from the first LED module 110 is emitted are incident on the incident surface 223, And a second exit surface 222 to be emitted. That is, the first LED module 110 and the second LED module 120 have the same incident surface 223 of the second lens 220, while the exit surface of the second lens 220 has the first and second LEDs Modules 110 and 120, respectively.

The light source unit 100 includes two light sources, a first LED module 110 and a second LED module 120. The first LED module 110 and the second LED module 120 include LED devices. Here, the first LED module 110 includes a plurality of LED elements, and the second LED module 120 may include a smaller number of LED elements than the first LED module 110. Thus, the illuminance of the first LED module 110 is formed to be higher than that of the second LED module 120. For example, when only the first LED module 110 is lit, or when both the first LED module 110 and the second LED module 120 are lit, it is possible to irradiate the first beam, When only the module 120 is lit, the second beam can be irradiated. Here, the first beam may be a beam of either a high beam or a low beam, and the second beam may be a positioning beam. For example, when the first beam is a high beam, even if only the first LED module 110 is lit, a high beam can be realized. However, compared to the case where only the first LED module 110 is lit, Both the first LED module 110 and the second LED module 120 may be turned on when the lighting image of the two LED modules 120 is turned on.

LEDs are diodes that emit excess energy into light when the injected electrons and holes are recombined. They are used as light sources for optical coupling devices, taking advantage of low voltage and low power. The first and second LED modules 110 and 120 of the light source unit 100 including the LED device have high energy efficiency such as high light conversion efficiency and low power consumption and have a long life, . It will be apparent to those skilled in the art that the present invention can include all kinds of devices using an electroluminescent effect such as an OLED (Organic Light-Emitting Diode) in addition to an LED (Light Emitting Diode). The headlamp assembly 10 according to an embodiment of the present invention using an LED as a light source has a color temperature of about 5500 K, which is close to sunlight, which minimizes fatigue in the eyes of a human eye. It has a semi-permanent lifetime and is economical.

The LED elements of the first and second LED modules 110 and 120 are mounted on a substrate. When there are a plurality of LED elements, a plurality of LED elements may be arranged in a line on a substrate, or a plurality of LED elements may be arranged in a lattice form. The substrate is provided with a terminal (not shown) connected to an external power source by a cable (not shown) or the like, and can receive power from an external power source such as a battery of the vehicle. The substrate serves to supply and control electric power to the LED element that converts electric energy into light energy, and a circuit pattern can be formed on the substrate.

The lens unit 200 includes two lenses 210 and 220 through which the light emitted from the light source unit 100 passes. At this time, light is first transmitted through the second lens 220 on the path of the light emitted from the light source unit 100, and then transmitted through the first lens 210. In general, the second lens 220 is disposed between the light source unit 100 and the first lens 210, but is not limited thereto. The first and second lenses 210 and 220 transmit the light emitted from the first and second LED modules 110 and 120 forward. The light irradiated from the predetermined positions of the first and second LED modules 110 and 120 spreads forward in all directions.

The first lens 210 includes a convex surface 211 through which light having passed through the second lens 220 is transmitted and which is convex on one side to emit light and a convex surface 211 through which the light passes through the second lens 220 And an incident surface 213 on which light is incident. At this time, the convex surface 211 of the first lens 210 may include at least one region having a different curvature from the other region. For example, as shown in FIG. 2, the curvature of the upper side and the lower side of the convex surface 211 on which the light is emitted from the first lens 210 can be formed differently, Can be changed. For example, when the first LED module 110 is illuminated and a high beam is irradiated, when the upper side curvature of the convex surface 211 is made gentler than the lower side curvature, the upper side of the beam pattern of the high beam is formed wider, May be formed to be narrower than the upper side. Thus, it is possible to reduce the glare of the opponent vehicle driver in the high beam pattern forming the upward beam. In addition, the incident surface 213 of the first lens 210 may have a flat shape at the center, and at least one of the edge portions may have a curved shape. The first lens 210 may be formed of a plastic material, but is not limited thereto. For example, the first lens 210 may be formed of a different material such as a glass material.

The second lens 220 has light output regions corresponding to the first and second LED modules 110 and 120 so that the light passing through the second lens 220 is incident on the first lens 210 . As described above, the second lens 220 includes an incident surface 223 on which the light irradiated from the first and second LED modules 110 and 120 is incident, and an incident surface 223 on which light emitted from the first LED module 110 And a second exit surface 222 through which light emitted from the second LED module 120 is emitted.

Here, the incident surface 223 of the second lens 220 may be formed flat, and at least one of the first exit surface 221 and the second exit surface 222 may be convex have. As the incident surface 223 of the second lens 220 is flat and the exit surfaces 221 and 222 are convexed, the light radiated from the first and second LED modules 110 and 120 is transmitted through the second lens 220, The light can be transmitted through the light guide 220 and irradiated forward. At least one of the first exit surface 221 and the second exit surface 222 of the second lens 220 may be formed asymmetrically and convexly. As shown in FIG. 1, since the first exit surface 221 and / or the second exit surface 222 are formed asymmetrically and convex, the light passing through the second lens 220 spreads widely, . The second lens 220 may be formed of at least one of a plastic material and a glass material. However, it should be apparent to those skilled in the art that the second lens 220 is not limited thereto.

6 is a top view of a path of light irradiated from a head lamp assembly according to an embodiment of the present invention. 7 is a side view of a light path illuminated by the head lamp assembly according to an embodiment of the present invention.

6 and 7, light having passed through the second lens 220 is incident on the first lens 210 positioned on the optical axis with the incident surface 223 being flat and the exit surfaces 221 and 222 being convex And the light exit surfaces 221 and 222 are formed asymmetrically, so that the light irradiation range can be widened. The light that has passed through the first lens 210 is transmitted through the convex surface 211 where the light is emitted and the incident surface 213 on which the light is incident toward the convex surface 211 so that the light is directed forward And the curvature of the convex surface 211 is designed differently, so that the beam pattern can be changed.

8 is a view showing the relationship between the center of a light source in a head lamp assembly according to an embodiment of the present invention and the plane center of a lens through which light emitted from the light source passes.

8, the center of the first exit surface 221 is aligned with the center of the first LED module 110 and the center of the second exit surface 222 is aligned with the center of the second LED module 110, And may not coincide with the center of the substrate 120. Specifically, the second lens 220 passes through the center C1 of the first exit surface 221, and the light emitted from the center of the first LED module 110 passes through the second LED module 120 can pass through the plane center C2 of the second exit surface 222 and pass therethrough. The light emitted from the first LED module 110 passes through the first exit surface 221 to have a straightness and the light emitted from the second LED module 120 passes through the second exit surface 222 And can spread.

9 is a view illustrating a headlamp apparatus using a headlamp assembly according to an embodiment of the present invention.

A headlamp apparatus according to an embodiment of the present invention may have a plurality of headlamp assemblies 10. 9, the headlamp apparatus can be installed on the left and right sides of the front of the vehicle V, and each headlamp apparatus includes two headlamp assemblies, that is, a first headlamp assembly 10A and a second headlamp assembly 10A. And a lamp assembly 10B. By embodying the headlamp apparatus with a plurality of headlamp assemblies 10, the front of the vehicle V can be illuminated more brightly, so that the driver can operate safely and the appearance design can be made more beautiful.

Here, the first head lamp assembly 10A and the second head lamp assembly 10B are the same as those of the head lamp assembly according to the above-described embodiments of the present invention, and only the first head lamp assembly 10A Is disposed inside the front of the vehicle V and the second headlamp assembly 10B is disposed outside the front of the vehicle V. [ Therefore, detailed descriptions of the components of the first head lamp assembly 10A and the second head lamp assembly 10B will be omitted.

The first head lamp assembly 10A disposed inside the front of the vehicle V is configured such that the plane center C3 of the convex surface 211 of the first lens 210 is parallel to the plane center of the first LED module 110, And the second head lamp assembly 10B disposed outside the front of the vehicle V is positioned to face the center C3 of the convex surface 211 of the first lens 210, Can be biased to the outside of the vehicle V away from the plane center of the first LED module 110. [ Accordingly, the light emitted from the first LED module 110 can be widely irradiated to the left and right of the vehicle V. [ That is, the irradiation range of the light emitted from the first LED module 110 can be increased.

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

100:
110: first LED module
120: second LED module
200:
210: first lens
211: convex surface of the first lens
213: entrance face of the first lens
220: second lens
221: a first exit surface of the second lens
222: a second exit surface of the second lens
223: entrance face of the second lens

Claims (13)

A light source unit including a first LED module and a second LED module irradiated with light having different amounts of light; And
And a lens portion including a first lens and a second lens,
Wherein light emitted from the light source passes through the second lens and transmits through the first lens,
Wherein the second lens has an incident surface on which light emitted from the first and second LED modules is incident, a first exit surface through which the light emitted from the first LED module is emitted, and a second exit surface irradiated with light from the second LED module And a second exit surface through which light is emitted,
The light source unit includes:
Wherein at least one of the first LED module and the second LED module is turned on depending on the kind of the beam. The method according to claim 1,
Wherein the first LED module includes a plurality of LED elements,
Wherein the second LED module comprises a smaller number of LED elements than the first LED module. The method according to claim 1,
Wherein the first lens includes a convex surface formed on one side and convex to emit light and an incident surface through which light irradiated through the second lens is incident. The method of claim 3,
Wherein an incident surface of the first lens has a flat shape at the center portion and at least one edge portion of both the edge portions has a curved shape. The method of claim 3,
Wherein the convex surface of the first lens includes at least one region that is different in curvature from the other region. The method according to claim 1,
Wherein the second lens has the incidence surface formed flat. The method according to claim 1,
Wherein the first and second exit surfaces of the second lens are formed to be convex. 8. The method of claim 7,
And at least one outgoing surface of the first and second outgoing surfaces is formed asymmetrically convex. The method according to claim 1,
The first lens is made of a plastic material,
Wherein the second lens is formed of at least one of a plastic material and a glass material. The method according to claim 1,
Wherein the light emitted from the center of the surface of the first LED module passes through the center of the surface of the first exit surface and the light emitted from the center of the surface of the second LED module passes through the center of the second exit surface The head lamp assembly passing through the center of the face. The method according to claim 1,
When only the first LED module is turned on or when both the first LED module and the second LED module are turned on, the first beam is irradiated,
And illuminates the second beam when only the second LED module is lit. 12. The method of claim 11,
Wherein the first beam is one of a high beam or a low beam,
And the second beam is a positioning beam. A first head lamp assembly disposed inside the front of the vehicle, the head lamp assembly being the head lamp assembly according to any one of claims 1 to 12; And
A second head lamp assembly disposed on the outside of the vehicle front and being a head lamp assembly according to any one of claims 1 to 12,
Wherein the first headlamp assembly is disposed such that the center of the surface of the convex surface of the first lens deviates from the center of the surface of the first LED module and is biased toward the inside of the vehicle,
Wherein the second head lamp assembly is positioned so that the center of the surface of the convex surface of the first lens deviates from the center of the surface of the first LED module and is biased toward the outside of the vehicle.

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