KR101740668B1 - Lamp for vehicle - Google Patents

Abstract

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 interference due to light reflected from a lens.
A vehicle lamp according to an embodiment of the present invention includes a light source unit including at least one light source and at least one reflector for forwardly reflecting light generated from the at least one light source, And a lens unit into which light having passed through the shield unit is incident, wherein the shield unit includes a light transmission hole through which at least a part of the light reflected by the lens unit passes .

Description

Lamp for vehicle

BACKGROUND OF THE INVENTION 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 interference due to light reflected from a lens.

2. Description of the Related Art [0002] In general, a vehicle is equipped with various kinds of vehicle lamps having a lighting function and a signal function for notifying a neighboring vehicle or a pedestrian of the traveling state of the vehicle so that an object located around the vehicle can be easily recognized at night when traveling.

For example, head lamps and fog lamps are mainly intended for lighting functions, and turn signal lamps, tail lamps, and brake lamps are mainly intended for signal functions.

Automotive lamps have generally used light sources such as halogen lamps or high intensity discharge (HID) lamps. Recently, however, they have not only reduced the size of automotive lamps, increased design freedom, The use of light emitting diodes (LEDs) having economical efficiency has been rapidly increasing.

Vehicle lamps are designated by the regulations as standards including their installation standards and light distribution conditions so that each function can be fully utilized. For example, a lamp for a vehicle requires an illuminance and a light irradiation range suitable for each function.

In the vehicle lamp, light generated from a light source is projected through a lens to form a beam pattern. Most of the light is transmitted through the lens. However, some light is reflected by the incident surface of the lens, Is likely to occur.

Accordingly, there is a need for a method for preventing the occurrence of a situation in which optical interference of light generated from a light source due to light reflected from a lens is generated, thereby failing to satisfy a light distribution condition.

US Patent 6,948,836 (September 27, 2005)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lamp for a vehicle which can prevent light interference caused by light reflected by an incident surface of a lens among lights incident on the lens.

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 comprising: a light source unit including at least one light source and at least one reflector for forwardly reflecting light generated from the at least one light source; A shield unit for shielding a part of the generated light to form a beam pattern, and a lens unit through which the light having passed through the shield unit is incident, wherein the shield unit includes at least a part of the light reflected by the lens unit And includes a light transmission hole.

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.

It is possible to prevent mutual optical interference with light forming the beam pattern from the light reflected by the incident surface of the lens among the light incident on the lens so that the light distribution condition is not satisfied due to the light reflected by the incident surface of the lens It is effective.

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 an exploded perspective view illustrating a lamp for a vehicle according to an embodiment of the present invention.
3 is a schematic view showing a vehicle in which a vehicle lamp according to an embodiment of the present invention is installed.
4 and 5 are perspective views illustrating a shield unit according to an embodiment of the present invention.
6 is a plan view showing a shield unit according to an embodiment of the present invention.
7 is a front view of the shield unit according to the embodiment of the present invention.
8 is a schematic view showing a beam pattern formed by a vehicle lamp according to an embodiment of the present invention;
9 is a schematic view showing the optical path of a lamp for a vehicle 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 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. 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 illustrating a lamp for a vehicle according to an embodiment of the present invention, and FIG. 2 is an exploded perspective 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 unit 100, a shield unit 200, and a lens unit 300.

In the embodiment of the present invention, the vehicle lamp 1 is installed on both sides of the front side of the vehicle as shown in Fig. 3, and is used for a head lamp that ensures a forward visibility when the vehicle travels at night or in a dark place such as a tunnel The vehicle lamp 1 of the present invention can be applied not only to a head lamp but also to a tail lamp, a brake lamp, a turn signal lamp, a fog lamp, a position lamp, a daytime running lamp, and the like And can be used for various lamps installed in a vehicle to perform at least one of a lighting function and a signal function.

The light source unit 100 may include at least one light source 110 and at least one reflector 120.

In an embodiment of the present invention, an LED (Light Emitting Diode) is used as at least one light source 110. However, the present invention is not limited thereto, and at least one light source 110 may include an LD Various types of light sources such as a laser diode, a bulb, and the like may be used, and components included in the light source unit 100 may be changed according to the type of the light source.

Also, if the at least one light source 110 is composed of a plurality of light sources, the light source may be composed of light sources that emit light of the same or different colors depending on the use of the vehicle lamp 1 of the present invention.

At least one light source 110 may be located on one side of the heat dissipating unit 400 which is the weakest when the LED is used as at least one light source 110, The heat of high temperature is released together with the heat generated by the LED, and the luminous efficiency of the LED is rapidly lowered due to the temperature rise due to the high temperature heat.

In the embodiment of the present invention, a heat sink is used as the heat dissipation unit 400. However, the present invention is not limited to this, and a cooling fan (not shown) may be additionally provided in addition to the heat sink .

At least one reflector 120 is formed on at least one surface facing at least one light source 110 with a reflecting surface (not shown) on which a material having a high reflectance such as aluminum or chromium is deposited or coated to form at least one light source The reflector 120 may be integrally formed with at least one reflector 120. However, the present invention is not limited thereto. For example, And the number of the at least one reflector 120 may be variously changed according to the direction in which the light is to be reflected and may be separated from each other when the plurality of reflectors 120 are formed.

In the embodiment of the present invention, at least one reflector 120 reflects light generated from at least one light source 110 forward, meaning that it reflects light from the vehicle lamp 1 of the present invention in the direction in which light is irradiated The direction of the vehicle lamp 1 according to the present invention may be different depending on the installation position and installation direction of the vehicle lamp 1. [

Also, in the embodiment of the present invention, at least one reflector 120 is disposed on the upper side of at least one light source 110 and reflects light generated upward from at least one light source 110 forward The position of the at least one reflector 120 may vary depending on the direction in which the light is emitted from the at least one light source 110. For example,

The shield unit 200 may be located in front of the light source unit 100 to block a part of light generated from the light source unit 100 to form a beam pattern.

6 is a plan view illustrating a shield unit according to an embodiment of the present invention. FIG. 7 is a perspective view of a shield according to an embodiment of the present invention. FIG. 8 is a schematic diagram showing a beam pattern formed by a shield unit according to an embodiment of the present invention.

4 to 8, the shield unit 200 according to the embodiment of the present invention may include a first shield 210, a second shield 220, and a light transmission hole 230.

The first shield 210 may have at least a part of a substantially horizontal plate shape and both ends of the front end of the first shield 210 may extend along the rear focal point or the rear focal point of the lens unit 300, ) Of the first and second elastic members 22a and 22b.

The first shield 210 may block a part of the light generated from the light source unit 100 to form the low beam pattern P1 of FIG. 8 and may be formed by the first shield 210 in the embodiment of the present invention. Quot; first beam pattern "will be referred to as " first beam pattern ".

The first shield 210 may be formed with a step 211 which at least partly has a different height so as to form a cut-off line of the first beam pattern, 300 or an optical axis Ax thereof.

In addition, at least a part of the surface of the first shield 210 that blocks light generated from the light source unit 100 is shielded by the lens unit 300 so that the light is reused, A reflective layer (not shown) may be formed on which a material having a high reflectance is deposited or coated.

The second shield 220 may be positioned in front of the first shield 210 to reflect a part of the light generated from the light source unit 100 to the lens unit 300 to form a second beam pattern. The second beam pattern is a signal beam pattern P2 that enables easy confirmation of a road sign located above the driver's field of vision as shown in FIG.

Although the first beam pattern is a low beam pattern P1 and the second beam pattern is a signal beam pattern P2 in the embodiment of the present invention, The first beam pattern and the second beam pattern may be variously changed depending on the position and shape of the first shield 210 and the second shield 220. [

The second shield 220 may be positioned such that the rear end of the second shield 220 is positioned at an upper side relative to the front end of the second shield 220 and is inclined at a predetermined angle as a whole. At least one surface of the second shield 220, (Not shown) in which a material having a high reflectance such as aluminum or chromium is deposited or coated so as to reflect a part of the light generated from the light source 100 may be formed.

The surface of the second shield 220 that reflects light generated from the light source unit 100 is a curved surface having a predetermined curvature centered around the optical axis Ax or the optical axis Ax of the lens unit 300 The shape of the surface reflecting the light generated from the light source unit 100 in the second shield 220 may be variously changed depending on the direction in which the light is reflected.

At this time, the one surface of the second shield 220 has a curved shape so that the signal beam pattern facilitates confirmation of road signs and the like, and concentrates light in a predetermined area so as to prevent the driver of the vehicle ahead from glare. .

In the embodiment of the present invention, the rear end and the front end of the second shield 220 refer to the direction in which the light is irradiated from the vehicle lamp 1 of the present invention and are the same as the light irradiation direction of the vehicle lamp 1 of the present invention The direction can be understood as the front end, and the opposite direction can be understood as the rear end.

The rear end of the second shield 220 is extended to one side of the first shield 210 relative to the other side in the direction of the height of the first shield 210 relative to the step 211, The rear end of the second shield 220 may be spaced apart from the first shield 210 by a relatively large amount of light in the portion having a relatively high height in the first shield 210 It is understood that it is formed relatively higher because of this, and vice versa.

The light traveling from the light source unit 100 to the second shield 220 is reflected by the first reflection plate 130 formed on at least one side of the front end of at least one reflector 120 among the light generated from the light source 110 In the embodiment of the present invention, light traveling out of the lens unit 300 out of the light generated from the light source unit 100 is guided to the second shield 220 by the first reflection plate 130 Thereby reducing the optical loss and improving the light utilization efficiency.

Although the first reflective plate 130 is formed on the front side of at least one reflector 120 in the embodiment of the present invention, the present invention is not limited to this, And the forming position and the forming direction of the second shield 220 may be changed according to the forming position of the first reflecting plate 130. [

The light transmission hole 230 may be formed between the first shield 210 and the second shield 220 and may extend to both sides of the optical axis Ax or the vicinity of the optical axis Ax of the lens unit 300 In the embodiment of the present invention, a case where the light transmission hole 230 is formed at the center of the front end of the first shield 210 will be described as an example.

At least part of the light reflected by the lens unit 300 is allowed to pass through the light transmission hole 230 so as to cause optical interference with light generated from the light source unit 100, The condition is not satisfied.

In other words, most of the light incident on the lens unit 300 passes through the lens unit 300, but some light can be reflected on the incident surface of the lens unit 300, The light reflected from the surface of the light source unit 100 proceeds to the light transmission hole 230 so that light interference between the light reflected from the lens unit 300 and the light emitted from the light source unit 100 is prevented to prevent the light distribution condition from being satisfied do.

For example, when the light generated from the light source unit 100 and the light reflected by the lens unit 300 are mutually optical interference, the illuminance of the beam pattern formed by the lamp 1 for a vehicle of the present invention is not uniform The light reflected from the lens unit 300 may travel through the light transmission hole 230 to prevent optical interference from being generated.

At this time, in the embodiment of the present invention, the light transmitting hole 230 is formed at the center of the front end of the first shield 210 because the light forming the hot zone of the beam pattern (i.e., And the remaining portion of the first shield 210 forms the spread region of the beam pattern, sufficient light can be obtained when the light forming the hot zone interferes with the light reflected by the lens unit 300 I can not get it.

A second reflection plate 231 is formed on at least a part of the peripheral edge of the light transmission hole 230 to reflect the light traveling to the light transmission hole 230 downward, Thereby preventing light from proceeding to the lens unit 300 again.

On the other hand, the light transmission holes 230 may have different areas on both sides of the optical axis Ax or the optical axis Ax of the lens unit 300, And the rear ends thereof have different lengths with respect to the stepped portion 211.

The lens unit 300 may include a lens 310 and a lens holder 320. The lens holder 320 supports the lens 310 and is combined with the light source unit 100 to form a shield unit 200 can be located.

Although the lens holder 320 is coupled to the heat dissipating unit 400 in which at least one light source 110 is disposed in the embodiment of the present invention, As shown in Fig.

The optical path of the lamp 1 for a vehicle according to an embodiment of the present invention as described above will be described in detail with reference to FIG.

9, at least a part of light L1 of the light generated from at least one light source 110 and the light reflected by at least one reflector 120 is partially blocked by the first shield 210 Thereby forming the low beam pattern P1 of FIG. 8 described above.

A part of the light L2 emitted from the at least one light source 110 is reflected by the first reflection plate 130 and the second shield 220 and reflected by the second shield 220 The light is incident on the lens 310 to form the signal beam pattern P2 of FIG. 8 described above.

At this time, a part of the light L3 incident on the lens 300 is reflected by the incident surface of the lens 310 and proceeds to the light transmission hole 230, The light reflected by the second reflection plate 231 in the downward direction and the light generated from the light source unit 100 can be prevented from being generated.

As described above, in the vehicle lamp 1 of the present invention, light interference occurs between light generated from the light source unit 100 and light reflected from the incident surface of the lens 310, It can be prevented.

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: Light source unit
110: Light source
120: Reflector
130: first reflection plate
200: Shield unit
210: first shield
220: Second shield
230: light transmission hole
231: second reflection plate
300: lens unit
310: lens
320: Lens holder

Claims (12)

A light source unit including at least one light source and at least one reflector for forwardly reflecting light generated from the at least one light source;
A shield unit for shielding a part of light generated from the light source unit to form a beam pattern; And
And a lens unit through which light having passed through the shield unit is incident,
The shield unit includes:
And a light transmission hole through which at least a part of the light reflected by the lens unit passes,
And a reflection plate which is formed on at least a part of the peripheral edge of the light transmission hole and reflects downward light reflected by the lens unit and traveling to the light transmission hole. The method according to claim 1,
Wherein the at least one reflector comprises:
And a control unit
Wherein the plurality of reflectors include:
A lamp for a vehicle formed integrally. The method according to claim 1,
The light-
Wherein a side surface area of the lens unit is different from an optical axis or a vicinity of an optical axis of the lens unit. The method according to claim 1,
The shield unit includes:
A first shield for forming a first beam pattern; And
And a second shield positioned in front of the first shield to form a second beam pattern. 5. The method of claim 4,
Wherein the first beam pattern comprises:
Low beam pattern,
Wherein the second beam pattern comprises:
Vehicle lamp with signal beam pattern. 5. The method of claim 4,
The first shield
At least a part of which has a horizontal plate shape,
A stepped portion is formed so that at least a part of the first beam pattern has a different height according to a cut-off line of the first beam pattern,
The second shield
Wherein one end adjacent to the first shield is formed so that both sides of the first shield are spaced apart from each other with respect to the stepped portion. 5. The method of claim 4,
The second shield
And is inclined at a predetermined angle,
And one end adjacent to the first shield is located on the upper side. 5. The method of claim 4,
The second shield
Wherein one surface has a curved surface shape having a predetermined curvature about an optical axis or a vicinity of an optical axis of the lens unit. 5. The method of claim 4,
The second shield
And reflects the light reflected by the reflection plate formed on one side of the at least one reflector toward the lens unit. 10. The method of claim 9,
The reflector plate formed on one side of the at least one reflector,
Wherein at least one of the upper front ends of the at least one reflector is formed at least in part. delete The method according to claim 1,
And a reflection plate formed on at least a part of the peripheral edge of the light transmission hole,
And extending downward from at least a part of the lower peripheral edge of the light transmission hole.

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