KR20210138307A - lamp for vehicle - Google Patents

Abstract

According to an embodiment of the present invention, a lamp for a vehicle comprises: a light source unit generating light; a first lens unit wherein the light is incident; and a second lens unit wherein at least a part of the light emitted from the first lens unit is transmitted to form a stereoscopic lighting image. A first coating layer is deposited on an emission surface of the first lens unit. A second coating layer is deposited on an incident surface of the second lens unit. The first coating layer includes an etched pattern unit. The second coating layer may reflect and transmit a part of light emitted according to the pattern unit.

Description

lamp for vehicle

The present invention relates to a vehicle lamp, and to a vehicle lamp capable of forming a three-dimensional lighting image by a first coating layer and a second coating layer provided in a first lens unit and a second lens unit.

In general, a vehicle is provided with various types of lamps having a lighting function for easily identifying an object located around the vehicle during night driving and a signal function for notifying other vehicles or road users of the driving state of the vehicle.

For example, a head lamp and a fog lamp mainly for the purpose of a lighting function, and a turn signal lamp, a tail lamp, and a brake for the purpose of a signal function It is equipped with a brake lamp, a side marker, and the like, and the installation standards and standards for these vehicle lamps are regulated by laws and regulations to fully exhibit each function.

Among the vehicle lamps, the head lamp forms a low beam pattern or a high beam pattern so that the driver's front view is secured when the vehicle is driven in a dark environment such as at night, and plays a very important role in safe driving. is doing

In such a vehicle headlamp, a headlamp that selectively forms a low-beam pattern or a high-beam pattern according to the provision of a shield member is provided as a single lamp module, and a headlamp that forms a low-beam pattern and a high-beam pattern are formed In some cases, each headlamp is provided as a separate lamp module.

As described above, the conventional vehicle lamp is only a means for performing a lighting function and a signal function, but in recent years, the proportion of the lamp in terms of design is increasing day by day.

That is, not only the functional aspect that helps safe driving by enabling the driver's visibility, which is the basic role of the vehicle lamp, but also the aesthetic aspect that consumers feel through the improvement of design has a great influence on whether to purchase a vehicle.

To this end, research for improving the exterior design by forming various lighting images through a vehicle lamp is being actively conducted.

Korean Patent Publication No. 10-2015-0052638 (published on May 14, 2015)

The technical problem to be solved by the present invention is to provide a vehicle lamp capable of efficiently forming a three-dimensional lighting image.

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

In the vehicle lamp according to an embodiment of the present invention, at least a portion of a light source unit for generating light, a first lens unit to which the light is incident, and light emitted from the first lens unit is transmitted through a second lens to form a three-dimensional lighting image A first coating layer is deposited on an exit surface of the first lens part, and a second coating layer is deposited on an incident surface of the second lens part, wherein the first coating layer includes an etched pattern part, and the second coating layer may reflect some of the emitted light and transmit some of the light according to the pattern portion.

A distance from the first lens unit to the second lens unit may be 4 cm or less.

The shape of the first lens unit and the shape of the second lens unit may be the same.

The light source unit may emit light.

The light transmittance of the second coating layer may be formed in any one of 10% to 15%.

The light reflectance of the first coating layer may be formed to be 90% or more.

The light source unit may further include a diffusion sheet provided between the light source unit and the first lens unit to diffuse the light generated by the light source unit.

It may further include a heat dissipation sheet for dissipating heat generated by the light source unit.

It may further include a housing unit connected to the second lens unit to accommodate the first lens unit and the light source unit.

According to the vehicle lamp according to the embodiment of the present invention, since the first and second coating layers are deposited on the first and second lens portions, a three-dimensional lighting image can be formed.

In addition, by setting the light reflectance of the first coating layer and the light transmittance of the second coating layer, it is possible to efficiently form a three-dimensional lighting image.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 and 2 are views showing a vehicle lamp according to an embodiment of the present invention.
3 is a view illustrating a first lens unit of a vehicle lamp according to an embodiment of the present invention.
4 is a view illustrating a path of light generated from a light source unit of a vehicle lamp according to an embodiment of the present invention.
5 to 8 are views showing a lighting image of a vehicle lamp according to an embodiment of the present invention.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, includes and/or comprising means not excluding the presence or addition of one or more other components, steps and/or actions other than the stated components, steps and/or actions. use it as And, “and/or” includes each and every combination of one or more of the recited items.

Further, the embodiments described herein will be described with reference to perspective, cross-sectional, side view and/or schematic views that are ideal illustrative views of the present invention. Accordingly, the form of the illustrative drawing may be modified due to manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include changes in the form generated according to the manufacturing process. In addition, in each drawing shown in the embodiment of the present invention, each component may be illustrated in a somewhat enlarged or reduced manner in consideration of convenience of description.

Hereinafter, preferred embodiments of the vehicle lamp according to the present invention will be described in detail based on the accompanying illustrative drawings.

A vehicle lamp according to an embodiment of the present invention may be used for various lamps installed in a vehicle, such as a head lamp, a tail lamp, a brake lamp, a fork lamp, a daytime running lamp, a turn signal lamp, a backup lamp, and the like.

In addition, the front described in this specification means a position when it is assumed that the direction in which light is irradiated from the vehicle lamp of the present invention is the front, and the direction that the front actually means according to the location or direction in which the vehicle lamp of the present invention is installed. may vary.

1 and 2 are views showing a vehicle lamp according to an embodiment of the present invention, FIG. 3 is a view showing a first lens unit of a vehicle lamp according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention It is a view showing the path of light generated from the light source unit of the lamp for a vehicle.

1 to 3 , a vehicle lamp according to an embodiment of the present invention may include a light source unit 10 , a first lens unit 100 , and a second lens unit 200 .

The light source unit 10 serves to generate light. The light source unit 10 may include a plurality of light sources attached to the substrate to generate light, and may generate light in a direction perpendicular to the substrate.

In addition, the light source may be formed to generate light having an amount or color suitable for the use of the vehicle lamp of the present invention, and an LED (Light Emitting Diode) semiconductor light emitting device is used, but is not limited thereto, but LD (Laser Diode), bulb A type of lamp may be used as the light source.

Meanwhile, the light source unit 10 may be formed to emit surface light in order to efficiently form a lighting image of a vehicle lamp. Accordingly, the light source unit 10 may include a surface light emitting LED and a surface light emitting plate. The reason why the light source unit 10 is formed so as to emit light is to form a uniform lighting image. If the light source unit 10 generates direct light rather than surface light emission, the brightness may become unbalanced, and a hot spot may occur in the three-dimensional lighting image.

The first lens unit 100 may be formed so that the light generated from the light source unit 10 is incident. Accordingly, the first lens unit 100 may be positioned in front of the light source unit 10 . The first coating layer 110 may be deposited on any one of the incident surface and the exit surface of the first lens unit 100 , and the first coating layer 110 may include at least the etched pattern portion 112 . .

Specifically, the first coating layer 110 may be formed on the exit surface of the first lens unit 100 . Here, the first coating layer 110 may be formed of aluminum (Al), but is not limited thereto. In addition, the pattern portion 112 may be formed in a quadrangle or a rhombus as shown in FIG. 3 , but is not limited thereto. For example, it may be formed in a figure such as a circle or a triangle, and may be formed in a character or a sentence.

In addition, the pattern part 112 may be formed in various shapes instead of being formed in one shape. For example, a star, a square, a letter, etc. may be formed together.

Accordingly, the light incident on the first lens unit 100 may be emitted from the first lens unit 100 in the direction of the second lens unit 200 according to the shape of the pattern unit.

Meanwhile, the pattern part 112 may be formed by a laser patterning technique. That is, after depositing the first coating layer 110 on the emitting surface of the first lens unit 100 , the first coating layer 110 is etched with a laser to form a pattern having a specific shape, so that the pattern unit 112 is formed. can

The second lens unit 200 may be positioned in front of the first lens unit 100 , and at least some of the light emitted from the first lens unit 100 is transmitted to form a three-dimensional lighting image.

A second coating layer 210 may be deposited on any one of an incident surface and an exit surface of the second lens unit 200 . Accordingly, some of the light emitted from the first lens unit 100 may be emitted again in the direction of the first lens unit 100 by the second coating layer 210 formed on the incident surface of the second lens unit 200 . have. The second coating layer 210 may be formed of, for example, a half mirror that is a semi-transmissive material formed of nickel chromium (NiCr), but is not limited thereto.

Accordingly, the second coating layer 210 may serve to reflect some of the light emitted according to the pattern portion 112 and transmit some of the light.

As shown in FIG. 4 , the light generated from the light source unit 10 passes through the pattern unit 112 of the first lens unit 100 and is incident on the second lens unit 200 , and is formed by the second coating layer 210 . Some are reflected back to the first lens unit 100 , and some are emitted through the second lens unit 200 .

Thereafter, the light reflected in the direction of the first lens unit 100 by the second coating layer 210 is reflected back in the direction of the second lens unit 200 by the first coating layer 110 or the first lens unit 100 ), it is possible to form an image according to the pattern portion 112 as it penetrates.

In addition, as more light is reflected between the first lens unit 100 and the second lens unit 200 , a plurality of images may be formed and the size of the images may gradually decrease. Therefore, when observing the vehicle lamp of the present invention from the outside, it can be observed that a plurality of images are three-dimensionally formed.

After all, as the light generated from the light source unit 10 of the vehicle lamp according to the embodiment of the present invention is reflected and transmitted between the first lens unit 100 and the second lens unit 200, the pattern unit 112 shape Since a plurality of images according to a three-dimensional effect can be formed in the interior of the vehicle lamp, a three-dimensional lighting image can be formed.

5 to 8 are views showing a lighting image of a vehicle lamp according to an embodiment of the present invention.

Since the image included in the three-dimensional lighting image is shown to be formed in a circle in FIGS. 5 to 8 , the pattern portion 112 of the first coating layer 110 may be formed in a plurality of circles. However, since this is for explaining the present invention, it may be formed in various figures, characters, sentences, etc. as described above in addition to the circular shape.

In addition, the lighting image described in FIGS. 5 to 8 may mean a three-dimensional lighting image of the present invention.

As described above, as the light is reflected from the first lens unit 100 and the second lens unit 200 , a plurality of images may be formed and the size of the images may gradually decrease. In addition, the distance between the image formed in the three-dimensional lit image may be determined as the distance from the first lens unit 100 to the second lens unit 200 .

As the distance from the first lens unit 100 to the second lens unit 200 increases, the distance between the images formed inside also increases and the size of the image may become too small. may not be formed efficiently.

For example, as shown in FIG. 5 , when the distance is formed to be 2 cm, 4 cm, 6 cm, or 8 cm, the distance between the images included in the lit image becomes longer as the distance increases to 8 cm, and the three-dimensional effect may be lost, thereby reducing the aesthetic feeling. can be In addition, when the distance from the first lens unit 100 to the second lens unit 200 is long, the overall size of the vehicle lamp may be increased.

Therefore, in order to efficiently form a three-dimensional lit image, the distance from the first lens unit 100 to the second lens unit 200 is preferably set to 4 cm or less.

Meanwhile, the light transmittance of the second coating layer 210 and the reflectance of the first coating layer 110 may also be preset.

If the light transmittance of the second coating layer 210 is higher, the image formed in the lit image may be reduced, and thus a three-dimensional effect may be lost. For example, as shown in FIG. 6 , more images may be formed when the transmittance is 10% than when the transmittance is 25%.

Therefore, the light transmittance of the second coating layer 210 is preferably formed in any one of 10% to 15%.

In addition, if the light reflectance of the first coating layer 110 is too small, a small number of images included in the lit image may be formed. For example, as shown in FIG. 7 , a smaller image may be formed when the reflectance is 70% than when the reflectivity is 90%.

In addition, when the reflectance is small (for example, 86% or less), since the internal structure of the vehicle lamp may be seen, the aesthetics may be deteriorated.

Therefore, the light reflectance of the first coating layer 110 is preferably formed to be 90% or more.

Meanwhile, the shape of the first lens unit 100 and the shape of the second lens unit 200 may be the same. If the shapes of the first lens unit 100 and the second lens unit 200 are different, an efficient three-dimensional lighting image cannot be formed.

For example, as shown in FIG. 8 , when the shape of the first lens unit 100 is concave or convex, the images included in the three-dimensional lighting image may be formed in an outward direction or an inward direction, respectively, resulting in deterioration of aesthetics. have.

As a result, when the shape of the first lens unit 100 is formed to be the same as that of the second lens unit 200 , a three-dimensional lighting image can be efficiently formed.

Referring back to FIGS. 1 and 2 , the vehicle lamp according to the embodiment of the present invention may further include at least one of a diffusion sheet 300 , a heat dissipation sheet 400 , and a housing unit 600 .

The diffusion sheet 300 may be provided between the light source unit 10 and the first lens unit 100 to diffuse the light generated by the light source unit 10 . Accordingly, the diffusion sheet 300 can prevent the formation of a hot spot on the three-dimensional lighting image by diffusing the light emitted from the surface of the light source unit 10 . In addition, the diffusion sheet 300 may serve to prevent the internal structure of the vehicle lamp from being exposed to the outside through the pattern part 112 . In detail, it is possible to prevent the housing portion 600 from being exposed to the outside, which will be described later. The size of the diffusion sheet may be the same as the size of the first light source unit 10 .

The heat dissipation sheet 400 serves to dissipate heat generated from the light source unit 10 . The heat dissipation sheet 400 may be formed to have the same size as the size of the light source unit 10 in order to efficiently dissipate heat from the light source unit 10 .

The housing unit 600 may be connected to the second lens unit 200 to accommodate the first lens unit 100 and the light source unit 10 .

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

10: light source unit
100: first lens unit
110: first coating layer
200: second lens unit
210: second coating layer
300: diffusion sheet
400: heat dissipation sheet
600: housing unit

Claims (12)

a light source for generating light;
a first lens unit to which the light is incident;
and a second lens unit through which at least a portion of the light emitted from the first lens unit is transmitted to form a three-dimensional lighting image,
A first coating layer is deposited on the exit surface of the first lens unit,
A second coating layer is deposited on the incident surface of the second lens unit,
The first coating layer includes an etched pattern portion, and the second coating layer reflects some of the light emitted according to the pattern portion and transmits a portion of the light. According to claim 1,
A vehicle lamp in which a distance from the first lens unit to the second lens unit is 4 cm or less. 3. The method of claim 2,
The distance from the first lens unit to the second lens unit is 2 cm or more and 4 cm or less. According to claim 1,
A vehicle lamp in which the shape of the first lens part and the shape of the second lens part are the same. According to claim 1,
The light source unit is a surface light-emitting vehicle lamp. According to claim 1,
The light transmittance of the second coating layer is 10% or more and 25% or less of a vehicle lamp. 7. The method of claim 6,
The light transmittance of the second coating layer is 10% or more and 15% or less of a vehicle lamp. According to claim 1,
The light reflectance of the first coating layer is 70% or more and 90% or less of a vehicle lamp. 9. The method of claim 8,
The light reflectance of the first coating layer is 86% or more and a vehicle lamp belonging to a range of 90% or less. According to claim 1,
The vehicle lamp further comprising a diffusion sheet provided between the light source unit and the first lens unit to diffuse the light generated by the light source unit. According to claim 1,
A vehicle lamp further comprising a heat dissipation sheet dissipating heat generated by the light source unit. According to claim 1,
The vehicle lamp further comprising a housing connected to the second lens unit to accommodate the first lens unit and the light source unit.

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