KR20190009521A - Lamp for vehicle - Google Patents

Abstract

The present invention relates to a lamp for a vehicle and, more specifically, relates to a lamp for a vehicle, which can prevent light from being irradiated to an unnecessary direction. According to an embodiment of the present invention, the lamp for a vehicle comprises: a light source unit; a first lens unit having a plurality of micro incident lenses on which light is incident from the light source unit; and a second lens unit having a plurality of micro emission lenses corresponding to each of the micro incident lenses. Each of the micro incident lenses is formed for a gap between an incident surface and an emission surface extending to a lower side from a connection surface to be gradually smaller downwards, and each of the micro emission lenses is formed for a gap between an incident surface and an emission surface extending to an upper side from the connection surface to be gradually smaller upwards.

Description

Lamp for vehicle

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lamp for a vehicle, and more particularly to a lamp for a vehicle which can prevent light from being irradiated in unnecessary directions.

Generally, a vehicle has a lighting function for easily confirming an object located in the vicinity of the vehicle at nighttime driving, and a lamp having 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 intended for illumination purposes, and turn signal lamps, tail lamps, brake lamps, side markers, and the like are signals.

Among them, the head lamp is very important for safe driving by irradiating light in the same direction as the running direction of the vehicle and ensuring the front view of the driver when the vehicle runs at night or in a dark place such as a tunnel It plays a role.

The headlamp forms various beam patterns such as a low beam pattern and a high beam pattern according to the driving environment of the vehicle. When light is irradiated in an unnecessary direction, the driver of the front vehicle may be glazed or the driver may be distracted. Thereby increasing the possibility of an accident.

Accordingly, there is a need for a method for preventing light from being irradiated in an unnecessary direction to increase the possibility of a vehicle accident.

Open Patent Publication No. 10-2007-0012233 (Published Jan. 25, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lamp for a vehicle which is capable of preventing light from proceeding in unnecessary directions by removing a part of a lens through which light passes.

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 lamp according to an embodiment of the present invention. The lamp includes a light source unit, a first lens unit including a plurality of micro-incidence lenses through which light is incident from the light source unit, And a second lens unit including a plurality of micro exit lenses corresponding to each of the plurality of micro incident lenses, wherein each of the plurality of micro incident lenses has a distance between an incident surface extending downward from the connection surface and an exit surface And each of the plurality of micro emission lenses is formed such that the interval between the incident surface and the emission surface extending upward from the connection surface becomes smaller toward the upper side.

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

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

Since a part of the lens through which the light is passed can be prevented from being irradiated in an unnecessary direction, a separate component for adjusting the direction in which the light is irradiated is not additionally used, thereby simplifying the structure and reducing the cost There is an effect.

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 perspective view showing a lamp for a vehicle according to an embodiment of the present invention;
2 is a side view of a vehicle lamp according to an embodiment of the present invention.
3 and 4 are perspective views illustrating a micro incident lens according to an embodiment of the present invention.
5 is a side view of a micro-incidence lens according to an embodiment of the present invention.
6 and 7 are perspective views illustrating a micro exit lens according to an embodiment of the present invention.
8 is a side view of a micro exit lens according to an embodiment of the present invention.
9 and 10 are schematic diagrams showing the optical paths of the first lens unit and the second lens unit according to the embodiment of the present invention.
11 is a schematic view showing a beam pattern formed by a vehicle lamp 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.

Thus, in some embodiments, well known process steps, well-known structures, and well-known techniques are not specifically described to avoid an undue interpretation 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 to be understood that the terms comprise and / or comprise are used in a generic sense to refer to the presence or addition of one or more other elements, steps, operations and / or elements other than the stated elements, steps, operations and / It is used not to exclude. And "and / or" include each and any combination of one or more of the mentioned items.

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. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are generated according to the manufacturing process. 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.

Hereinafter, the present invention will be described with reference to the drawings for explaining a vehicle lamp according to embodiments of the present invention.

FIG. 1 is a perspective view showing a lamp for a vehicle according to an embodiment of the present invention, and FIG. 2 is a side view illustrating a lamp for a vehicle according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, a vehicle lamp 1 according to an embodiment of the present invention may include a light source 100, a first lens unit 200, and a second lens unit 300.

In the embodiment of the present invention, when the vehicle lamp 1 is used for a head lamp which irradiates light in a running direction of the vehicle to secure a forward view of the vehicle when the vehicle travels in a dark place such as at night or in a tunnel The vehicle lamp 1 of the present invention is applicable not only to a head lamp but also to a vehicle such as a tail lamp, a brake lamp, a fog lamp, a backup lamp, a turn signal lamp, a daytime running lamp, And can be used for various lamps installed.

When the vehicle lamp 1 of the present invention is used as a headlamp, various beam patterns such as a low beam pattern and a high beam pattern can be formed, and the low beam pattern can be formed by a driver of a front vehicle such as a preceding vehicle, Off line of a predetermined shape so as to prevent glare from occurring.

The light source unit 100 may include a light source 110 and a light guide unit 120.

In the embodiment of the present invention, the light source 110 is a semiconductor light emitting device such as an LED. However, the light source 110 is not limited to a semiconductor light emitting device, Various types of light sources may be used.

The light guiding unit 120 may guide the light generated from the light source 110 to the first lens unit 200.

The light guide unit 120 converts the light path so that light generated at a predetermined light irradiation angle from the light source 110 is parallel to the optical axis Ax of the light source 110, And the light generated from the light source 110 may travel to the first lens unit 200 as much as possible to reduce light loss.

The optical axis Ax of the light source 110 may be understood as a line passing through the center of the light emitting surface of the light source 110 and the optical axis Ax of the light source 110 may be understood as an optical axis of the light source unit 100 .

In the embodiment of the present invention, when the light guide unit 120 includes a collimator lens having a predetermined light irradiation angle from the light source 110 and converting the generated light into light parallel to the optical axis Ax of the light source 110 In this case, the light passing through the center of the light guide part 120 goes directly to the first lens part 200, and light passing through the center of the light guide part 120 passes through the light guide part 120 The light can be refracted or reflected by the light guiding part 120 and proceed to the first lens part 200.

In the embodiment of the present invention, the light emitted from the light source 110 directly travels to the light guide 120. However, the present invention is not limited to this, And a reflector (not shown) for reflecting the light generated from the light guiding part 110 to the light guiding part 120 may be further used.

The first lens unit 200 may include a plurality of micro incidence lenses 210 and the plurality of micro incidence lenses 210 may be disposed in a region where light generated from the light source unit 100 is incident. That is, the incident surfaces of the plurality of micro-incidence lenses 210 are gathered to form the incident surface of the first lens unit 200, and the exit surfaces of the plurality of micro-incidence lenses 210 are gathered, Thereby forming an exit surface.

FIGS. 3 and 4 are perspective views illustrating a micro incident lens according to an embodiment of the present invention, FIG. 5 is a side view illustrating a micro incident lens according to an embodiment of the present invention, An incident lens 210, and the like.

3 to 5, the micro-incidence lens 210 according to the embodiment of the present invention includes an incident surface 210b and an emission surface 210c extending from both sides of the connection surface 210a downward And the incident surface 210b and the emitting surface 210c may be formed to have a smaller distance toward the lower side.

In the exemplary embodiment of the present invention, the micro-incidence lens 210 may have a shape in which the upper portion is removed with respect to the connection surface 210a among the lenses formed symmetrically about the connection surface 210a, And the upper part is removed with reference to the optical axis of the light source.

3 to 5 illustrate a case where the incident surface 210b has a predetermined curvature and is formed so as to be closer to the emitting surface 210c toward the lower side. However, the present invention is not limited thereto, and the incident surface 210b and / And at least one of the emission surfaces 210c may be formed so as to be closer to each other.

The second lens unit 300 may include a plurality of micro exit lenses 310 through which the light emitted from the first lens unit 200 is incident and the incident surfaces of the plurality of micro exit lenses 310 collect 2 lens unit 300 and the exit surfaces of the plurality of micro exit lenses 310 are gathered to form the exit surface of the second lens unit 300. [

6 and 7 are perspective views illustrating a micro exit lens according to an embodiment of the present invention, FIG. 8 is a side view illustrating a micro exit lens according to an embodiment of the present invention, And the exit lens 310, as shown in FIG.

6 to 8, the micro exit lens 310 according to the embodiment of the present invention may include an incident surface 310b and an emission surface 310c extending upward from the connection surface 310a, The incident surface 310b and the emitting surface 310c may be formed to have a smaller distance toward the upper side.

In the embodiment of the present invention, the micro exit lens 310 is formed in a shape symmetrical with respect to the connecting surface 310a, that is, a shape in which the lower portion is removed with respect to the connecting surface 310a, And the lower part is removed with reference to the optical axis of the light source.

6 to 8 illustrate the case where the exit surface 310c has a predetermined curvature and is formed so as to be closer to the entrance surface 310b toward the upper side. However, the entrance surface 310b and the entrance surface 310b are not limited thereto, At least one of the emission surfaces 310c may be formed so as to be closer to each other toward the upper side.

The plurality of micro exit lenses 310 may correspond to the plurality of micro incident lenses 210 and light emitted from each of the plurality of micro incident lenses 210 may be incident thereon.

A focus F may be formed between a plurality of micro incidence lenses 210 and a plurality of micro exit lenses 310 corresponding to each of the plurality of micro incidence lenses 210, The light emitted from each of the lenses 210 may be incident on the plurality of micro exit lenses 310 through the respective focal points F. [

The connection surface 210a of the plurality of micro incidence lenses 210 and the connection surface 310a of the plurality of micro exit lenses 320 are parallel to the optical axis of the light source unit 100 and extend along an extension line E ), As shown in Fig.

In the embodiment of the present invention, a plurality of micro incidence lenses 210 have a shape of a lower portion of a lens formed vertically symmetrically about a connection surface 210a, and a plurality of micro exit lenses 310 are connected to a connection surface 310a, The extension line E is formed between the connecting surface 210a of the plurality of micro incidence lenses 210 and the plurality of micro outgoing lenses 210a and 210b, The connecting surface 210a of the plurality of micro incidence lenses 210 and the connecting surface 310a of the plurality of micro emergence lenses 310 are part of the virtual surface .

In the embodiment of the present invention, the case where the connecting surface 210a of the plurality of micro incidence lenses 210 and the connecting surface 310a of the plurality of micro emergence lenses 310 are positioned so as to be a part of the virtual surface will be described as an example The connection surfaces 210a of the plurality of micro incidence lenses 210 and the connection surfaces 310a of the plurality of micro emission lenses 310 may be spaced apart from the virtual surface for reasons of design or the like It is possible.

For example, when the connection surfaces 210a of the plurality of micro incident lenses 210 are spaced downward from the virtual surface, the connection surfaces 310a of the plurality of micro emission lenses 310 are spaced upward from the virtual surface And may be located.

The entrance surface 210b and the exit surface 210c of the plurality of micro incidence lenses 210 extend downward with respect to the virtual surface and the entrance surface 310b of the plurality of micro exit lenses 310 And the emitting surface 310c extend upwardly relative to the virtual surface, and the direction of the upper and lower sides may vary depending on the position of the virtual surface.

As described above, since the plurality of micro incidence lenses 210 are positioned such that the connection plane 210a is parallel to the imaginary plane, and the plurality of micro emission lenses 310 are located parallel to the imaginary plane The corresponding micro incidence lens and the emergence lens of the plurality of micro incidence lenses 210 and the plurality of micro emergence lenses 310 are respectively positioned on the lower side and the upper side with respect to the corresponding focus F. [

Therefore, the light emitted from each of the plurality of micro-incidence lenses 310 passes through the respective foci F from the lower side with respect to the respective foci F as shown in FIG. 9, And the plurality of micro exit lenses 310 corresponding to each of the plurality of micro-emission lenses 310.

In this case, when light emitted from each of the plurality of micro-incidence lenses 310 is incident on and emitted from a plurality of micro-emergence lenses 310 corresponding to each of the plurality of micro-incidence lenses 310, The light emitted from each of the plurality of micro-incidence lenses 310 may be incident on a plurality of micro-emergence lenses 310 other than the plurality of micro-emergence lenses 310 corresponding to the plurality of micro-incidence lenses 310 When the light is incident on another microlens, there is a possibility that light is emitted in an unnecessary direction.

For example, when the low beam pattern is formed by the vehicle lamp 1 of the present invention, when the upper beam of the low beam pattern is irradiated by the light emitted in an unnecessary direction as described above, There is a possibility of occurrence.

At this time, in the embodiment of the present invention, the micro-emission lenses 310 are formed so that the distance between the incident surface 310b and the emission surface 310c, which extend from both sides of the connection surface 310a to the upper side, 10, light emitted from each of the plurality of micro-incidence lenses 310 is incident on a micro-emergence lens other than the plurality of micro-emergence lenses 310 corresponding to each of the plurality of micro-incidence lenses 310 The light beam L is refracted downward to prevent unnecessary light from being irradiated on the upper side of the low beam pattern, so that the driver of the vehicle ahead can be prevented from glare.

In other words, when the plurality of micro exit lenses 310 have a vertically symmetrical shape with respect to the connecting surface 310a, as described above, light emitted from each of the plurality of micro incident lenses 310 is transmitted through the plurality of micro- When the light is incident on a micro exit lens other than the plurality of micro exit lenses 310 corresponding to each of the plurality of micro-emission lenses 310, the light is refracted upward to be incident on the lower part with respect to the connection surface 310a, Light can be irradiated to the upper region A of the front region P and the driver of the front vehicle can be glazed when the upper region A is irradiated with light.

Therefore, in the embodiment of the present invention, a plurality of micro-emergence lenses 310 are formed in a vertically symmetrical shape with the connection surface 310a as a center, Thereby preventing light from being irradiated onto the upper region A of Fig.

Meanwhile, in the embodiment of the present invention, a plurality of micro-incidence lenses 210 are vertically symmetric with respect to the connection surface 210a, and the upper portion of the lens is removed from the connection surface 210a, So as to prevent the light efficiency from being lowered due to the light which can not contribute to the ensuring.

That is, when a plurality of micro-incidence lenses 210 have lenses formed vertically symmetrically with respect to the connecting surface 210a, light passing through the focus F from the lower side to the upper side with respect to the focus F But light passing through the focus F from the image side to the lower side based on the focus F is present.

In this way, when light traveling from the upper side through the focus F to the lower side with respect to the focal point F is incident on the plurality of micro exit lenses 310, the light is excessively used so as not to be used for forming the low beam pattern The light incident on the plurality of micro-incidence lenses 210 may be used to form a beam pattern as much as possible so that a plurality of micro-incidence lenses 210 may be formed so as to improve light efficiency. Can be understood as having a shape in which the upper portion is removed with respect to the connecting surface 210a among the lenses formed in the vertically symmetric connection surface 210a.

As described above, the lamp 1 for a vehicle according to the embodiment of the present invention is configured such that when light generated from the light source unit 100 is irradiated through a plurality of micro incident lenses 210 and a plurality of micro emission lenses 310 The plurality of micro incidence lenses 210 have a shape extending downward with respect to the connecting surface 210a and the plurality of micro emergence lenses 310 have a shape extending upward with respect to the connecting surface 310a It is possible to prevent light from being irradiated in an unnecessary direction.

In the embodiment of the present invention, a plurality of micro-incidence lenses 210 and a plurality of micro-emergence lenses 310 are separated from each other. However, the present invention is not limited to this, The plurality of micro exit lenses 310 and the plurality of micro exit lenses 310 may be integrally formed on one surface of the light transmitting portion made of a material through which light is transmitted.

On the other hand, the vehicle lamp 1 of the present invention includes a plurality of shields (not shown) shielding a part of light incident on each of the plurality of micro-emergence lenses 310 to have a predetermined cut- A plurality of shields (not shown) may be formed so as to have a cut-off line shape at an upper end located near the focal point F. As shown in FIG.

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

100:
110: Light source
120: light guide portion
200: first lens unit
210: micro-incidence lens
300: a second lens portion
310: Micro exit lens

Claims (12)

A light source;
A first lens unit including a plurality of micro-incidence lenses through which light is incident from the light source unit; And
And a second lens unit including a plurality of micro exit lenses corresponding to each of the plurality of micro incident lenses,
Wherein each of the plurality of micro-
The distance between the incident surface and the emission surface extending downward from the connection surface is formed to be smaller toward the lower side,
Wherein each of the plurality of micro exit lenses comprises:
And the distance between the incident surface and the emission surface extending upward from the connection surface is made smaller toward the upper side. The method according to claim 1,
A focal point is formed between the plurality of micro incidence lenses and a plurality of micro exit lenses corresponding to each of the plurality of micro incidence lenses,
Wherein a connection surface of a first micro incidence lens of the plurality of micro incidence lenses and a connection surface of a first micro incidence lens corresponding to the first micro incidence lens among the plurality of micro exit lenses are connected to each other,
And a first focus located between the first micro-incidence lens and the first micro-emission lens. 3. The method of claim 2,
The connection surface of the first micro-incidence lens and the connection surface of the first micro-
And is positioned so as to be a part of the virtual surface. 3. The method of claim 2,
Wherein the first micro-incidence lens comprises:
A lower surface of the virtual surface,
The first micro-emergence lens may include:
And the lamp is located above the imaginary plane. 3. The method of claim 2,
The light emitted from the first micro-
And passes from the lower side of the first focus through the first focus to the upper side of the first focus. 3. The method of claim 2,
Wherein,
And an extension line extending along the optical axis of the light source unit and passing through the first focal point. The method according to claim 6,
The light emitted from the first micro-emergence lens
The lamp being parallel to the extension line. The method according to claim 6,
The light emitted from the first micro-emergence lens
And the lamp extends toward the lower side with respect to the extension line. The method according to claim 1,
The plurality of micro-incidence lenses may include a plurality of micro-
Wherein at least one of an incident surface and an emergent surface has a predetermined curvature and extends downward so as to face each other. The method according to claim 1,
Wherein the plurality of micro exit lenses comprise:
Wherein at least one of an incident surface and an emergent surface has a predetermined curvature and extends upward so as to face each other. The method according to claim 1,
The light source unit includes:
Light source; And
And a light guiding unit for guiding the light generated from the light source to the plurality of micro incident lenses,
The light guiding portion
And converts the light path so that the light generated from the light source is parallel to the optical axis of the light source. 12. The method of claim 11,
The light guiding portion
Automotive lamp that is a collimator lens.

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