KR102298960B1 - Vehicle lamp - Google Patents

Abstract

A vehicle lamp according to an embodiment of the present invention forms at least a portion of a low beam pattern by emitting a first light source and light emitted from the first light source as a beam of a first pattern irradiated to a lower portion of a cut-off line. A DRL (daytime running light) pattern or a signal pattern is formed by emitting the light emitted from the first solid optic, the second light source, and the second light source as a beam of a second pattern irradiated above and below the cut-off line. and a second solid optic.

Description

Vehicle lamp {Vehicle lamp}

The present invention relates to a vehicle lamp, and more particularly, to a vehicle head lamp positioned in front of a vehicle.

In general, a vehicle is equipped with various 'vehicle' lamps having a lighting function to easily check an object located around the vehicle during night driving and a signal function to notify other vehicles or road users of the driving state of the vehicle.

For example, low-beam/high-beam lamps and fog lamps mainly serve a lighting function, and turn indicator lamps, signal lamps, tail lamps, brake lamps, and position lights mainly serve a signaling function. .

Recently, to reduce traffic accidents, a new law has been enacted to turn on lamps during the daytime. Accordingly, recently released vehicles are equipped with daytime running lights (DRLs).

For these various vehicle lamps, luminous intensity, color of light, range of light distribution, etc. are legalized so that each function can be fully exhibited.

For example, a low beam emitted from a low beam lamp is regulated not to cross a certain cut-off line in order to protect the visibility of an oncoming vehicle or a driver of a preceding vehicle.

Therefore, an optical design is required so that the light emitted from the lamp for each function meets the regulation. To this end, the reflecting surface of the reflector that reflects the light emitted from the light source and directs it to the lens is individually designed and used.

However, in the lamp using the reflector, the reflective surface of the reflector is observed from the outside of the vehicle, thereby impairing the design aesthetics of the lamp. Also, in the case of a vehicle headlamp in which low beam/high beam, DRL, direction indication, and position lamps are located together, it is very difficult to design an optical structure for each lamp to comply with the design of the headlamp and the light distribution laws for each function. This entails

The problem to be solved by the present invention is to provide a vehicle lamp that uses solid optics to improve the aesthetics of an optical image expressed when the lamp is turned on, and to satisfy the light distribution law of a beam pattern with a simpler structure.

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.

A vehicle lamp according to an embodiment of the present invention for solving the above problems is a low beam by emitting a first light source and a light emitted from the first light source as a beam of a first pattern irradiated to a lower portion of a cut-off line The first solid optic forming at least a part of the pattern, the second light source, and the light emitted from the second light source are emitted as a beam of a second pattern irradiated above and below the cut-off line to obtain a daytime running light (DRL) and a second solid optic forming a pattern or signal pattern.

The beam of the first pattern may form a spread pattern irradiated to a short distance in front of the vehicle among the low beam patterns.

The emitting surface of the first solid optic may include a downward inclined surface such that the beam of the first pattern forms the spread pattern.

The control unit may further include a control unit for adjusting the luminous intensity of the second light source, wherein the controller adjusts the luminous intensity of the second light source so that the beam of the second pattern is used as the DRL pattern or the signal pattern.

Transverse optics may be formed on the exit surface of the second solid optic so that the beam of the second pattern extends above and below the cut-off line.

Vertical optics may be additionally formed on the exit surface of the second solid optic so that the beam of the second pattern is extended to the left and right.

An inner lens provided in front of the emitting surfaces of the first solid optic and the second solid optic to expand the irradiation range of the beam of the first pattern and the beam of the second pattern may be further included.

A vehicle lamp according to another embodiment of the present invention for solving the above problems, a first light source, a first light emitted from the first light source is emitted as a beam of a first pattern irradiated to the lower portion of the cut-off line A solid optic, a second light source, a second solid optic for emitting light emitted from the second light source as a beam of a second pattern irradiated to an upper portion of the cut-off line, and lighting of the first light source and the second light source and a controller for controlling the luminous intensity of the first light source and the second light source.

The control unit turns on the first light source and the second light source at the same time and controls the luminous intensity of the first light source and the second light source, so that the beam of the first pattern and the beam of the second pattern is a daytime running light (DRL) ) to form a pattern.

The control unit illuminates the first light source and the second light source at the same time and controls the luminous intensity of the first light source and the second light source so that the beam of the first pattern forms at least a part of the low beam pattern, The beam of the second pattern may form a signal pattern.

The controller may turn on the first light source and turn off the second light source so that the beam of the first pattern forms at least a portion of the low beam pattern.

The beam of the first pattern may form a spread pattern irradiated to a short distance in front of the vehicle among the low beam patterns.

The emitting surface of the first solid optic may include a downward inclined surface such that the beam of the first pattern forms the spread pattern.

The exit surface of the first solid optic includes a downward inclined surface so that the beam of the first pattern is irradiated to the lower portion of the cut-off line, and the exit surface of the second solid optic is the beam of the second pattern. It may include an upward sloping surface so as to be irradiated to the upper part of the cut-off line.

An inner lens provided in front of the emitting surfaces of the first solid optic and the second solid optic to expand the irradiation range of the beam of the first pattern and the beam of the second pattern may be further included.

The inner lens may include vertical optics extending the irradiation range left and right.

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

According to the embodiments of the present invention, there are at least the following effects.

The aesthetics of the optical image expressed when the lamp is turned on is improved.

In addition, it is possible to satisfy the light distribution law of the beam pattern with a simpler structure.

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 is a diagram schematically illustrating a vehicle lamp according to a first embodiment of the present invention.
2 is a view schematically illustrating a beam of a first pattern and a beam of a second pattern of a vehicle lamp according to the first embodiment of the present invention.
3 is a plan view illustrating an exit surface of a second solid optic of a vehicle lamp according to a first embodiment of the present invention.
4 is a cross-sectional view taken along line AA of FIG. 3 .
5 is a plan view illustrating an emitting surface according to another embodiment of the second solid optic of the vehicle lamp according to the first embodiment of the present invention.
6 is a cross-sectional view taken along line BB of FIG. 5 .
7 is a diagram schematically illustrating a vehicle lamp according to a second embodiment of the present invention.
8 is a diagram schematically illustrating a beam of a first pattern and a beam of a second pattern of a vehicle lamp according to a second embodiment of the present invention.
9 is a plan view illustrating an emitting surface of an inner lens of a vehicle lamp according to a second embodiment of the present invention.
FIG. 10 is a cross-sectional view taken along line DD of FIG. 9 .

Advantages and features of the present invention and methods of 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 those who have 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.

In addition, the embodiments described herein will be described with reference to cross-sectional and/or schematic diagrams 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. In addition, in each of the drawings shown in the present invention, each component may be enlarged or reduced to some extent in consideration of convenience of description. Like reference numerals refer to like elements throughout.

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

First, a vehicle lamp according to a first embodiment of the present invention will be described.

1 is a diagram schematically illustrating a vehicle lamp according to a first embodiment of the present invention, and FIG. 2 is a diagram schematically illustrating a beam of a first pattern and a beam of a second pattern of a vehicle lamp according to a first embodiment of the present invention It is a drawing expressed as

As shown in FIG. 1 , the vehicle lamp 1 according to the first embodiment of the present invention includes a first light source 11 , a second light source 12 , a first solid optic 20 , and a second solid optic ( 30), an inner lens 40 and a control unit.

Although the first light source 11 and the second light source 12 are each illustrated as one light source in FIG. 1 , each of the light sources 11 and 12 may include a plurality of light sources.

As the first light source 11 and the second light source 12 , a semiconductor light emitting device such as a light emitting diode (LED) or a laser diode (LD) may be used. Alternatively, a bulb-type lamp may be used as the light source 10 . As the bulb-type lamp, a halogen lamp, a High Intendity Dischage (HID) lamp, or the like may be used.

The first light source 11 and the second light source 12 are electrically connected to the control unit. The controller may control on/off and luminous intensity of the first light source 11 and the second light source 12 .

The first solid optic 20 is disposed adjacent to the first light source 11 .

The first solid optic 20 may have a truncated pyramid shape or a truncated cone shape in which the emitting surface 21 has a larger area than the incident surface (unsigned) facing the first light source 11 .

As shown in FIG. 1 , the exit surface 21 of the first solid optic 20 forms a downward inclined surface. Accordingly, the lights L1 and L2 emitted through the emitting surface 21 of the first solid optic 20 are irradiated downward.

Lights L1 and L2 emitted through the exit surface 21 of the first solid optic 20 form a beam A1 of a first pattern in front of the vehicle.

As shown in FIG. 2 , the beam A1 of the first pattern is irradiated downward to form a beam pattern under the cut-off line H. As shown in FIG.

The beam A1 of the first pattern may be used as a low beam pattern. In particular, the beam A1 of the first pattern may be used as a spread pattern irradiated to a short distance in front of the vehicle among the low beam patterns.

Accordingly, when the low beam operation signal is received, the controller may turn on the first light source 11 to form a low beam spread pattern.

Meanwhile, the second solid optic 30 is disposed adjacent to the second light source 12 .

The second solid optic 30 may also have the shape of a truncated pyramid or a truncated cone in which the area of the exit surface 31 is larger than the incident surface (unsigned) facing the second light source 12 .

As shown in FIG. 1 , the exit surface 31 of the second solid optic 30 may be substantially parallel to the incidence surface, unlike the exit surface 21 of the first solid optic 20 . have.

Accordingly, the light L3 and L4 emitted through the exit surface 31 of the second solid optic 30 is the light L1 and L2 emitted through the exit surface 21 of the first solid optic 20. It spreads upwards and downwards and can be irradiated.

Lights L3 and L4 emitted through the exit surface 31 of the second solid optic 30 form a beam A2 of a second pattern different from the beam A1 of the first pattern.

As shown in FIG. 2 , the beam A2 of the second pattern forms a beam pattern at the upper and lower portions of the cut-off line H. As shown in FIG.

The beam A2 of the second pattern may be used as a daytime running light (DRL) pattern or a signal pattern.

When only the DRL needs to be irradiated, the control unit turns off the first light source 11 and turns on only the second light source 12 .

And, when only the low beam needs to be irradiated, the control unit turns the first light source 11 on and the second light source 12 turns on or off. When the second light source 12 is turned on, the beam A2 of the second pattern is used as a signal pattern for irradiating a sign on the road.

Since the signal pattern requires a lower luminance compared to the DRL pattern, the controller adjusts the luminance of the second light source 12 to the DRL when the beam A2 of the second pattern and the beam A2 of the second pattern are used as the signal pattern. It can be controlled to keep it relatively lower than when used as a pattern.

On the other hand, when the high beam operation signal is received, the control unit turns on both the first light source 11 and the second light source 12 to use the second pattern of the beam A2 in the upper region of the cut-off line H It is possible to enhance the luminance for In this case, in order to reinforce the luminous intensity of the high beam, the controller may control the luminous intensity of the second light source 12 to be maintained high.

3 is a plan view illustrating an exit surface of a second solid optic of a vehicle lamp according to a first embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line AA of FIG. 3 .

3 and 4 , transverse optics 31a are formed on the exit surface 31 of the second solid optic 30 according to the present embodiment.

As shown in FIG. 4 , the optics 31a in the horizontal direction refract light passing through the optics 31a up and down. Accordingly, the beam A2 of the second pattern is more effectively extended above and below the cut-off line H.

Although FIG. 4 illustrates the optics 31a protruding from the exit surface 31 , the optics 31a may be recessed into the exit surface 31 .

5 is a plan view illustrating an emitting surface according to another embodiment of the second solid optic of the vehicle lamp according to the first embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line BB of FIG. 5 .

In FIG. 3 , only the optics 31a in the horizontal direction are formed on the exit surface 31 of the second solid optic 30 , but as shown in FIG. 5 , another embodiment of the second solid optic 30 is shown. For example, in addition to the optics 31a in the horizontal direction, the optics 31b in the vertical direction may be formed on the emission surface 31 ′. In this case, as shown in FIG. 5 , the optics 31a and 31b are formed in a grid-like structure on the exit surface 31 ′ of the second solid optic 30 .

Section AA of FIG. 5 is similar to the case of FIG. 4 and thus is omitted. As described above, the optics 31a in the horizontal direction refract light passing through the optics 31a up and down to vertically expand the beam A2 of the second pattern.

As shown in FIG. 6 , the vertical optics 31b refract the light passing through the optics 31b to the left and right. Accordingly, the beam A2 of the second pattern is extended in the left and right directions, so that it is possible to easily satisfy light distribution regulations such as the DRL pattern.

5 and 6 show an example in which the optics 31a in the horizontal direction and the optics 31b in the vertical direction form a rectangular grid, but the optics 31a in the horizontal direction and the optics 31b in the vertical direction are shown. They may be configured to form a rhombus grid.

Meanwhile, as shown in FIG. 1 , the inner lens 40 is disposed in front of the exit surfaces 21 and 31 of the first solid optic 20 and the second solid optic 30 .

The inner lens 40 may also include optics 241a (refer to FIG. 10 ) similar to the optics 31a formed on the emission surface 31 of the second solid optic 30 to further expand the light irradiation range. A detailed description thereof will be described in more detail in the description of the vehicle lamp according to the second embodiment of the present invention.

As described above, the vehicle lamp 1 according to the embodiment of the present invention constitutes an optical system using solid optics 20 and 30 without using a separate reflector. Accordingly, it is possible to provide a vehicle lamp with improved design aesthetics compared to a lamp using a reflector.

In addition, by using the solid optics 20 and 30 and the inner lens 40, it is possible to satisfy the light distribution regulations of the low beam pattern, the DRL pattern, and the signal pattern.

Hereinafter, a vehicle lamp 2 according to a second embodiment of the present invention will be described. For convenience of description, parts similar to those of the first embodiment use the same reference numerals, and descriptions of parts common to the first embodiment are omitted.

7 is a diagram schematically illustrating a vehicle lamp according to a second embodiment of the present invention, and FIG. 8 is a schematic diagram of a beam of a first pattern and a beam of a second pattern of a vehicle lamp according to a second embodiment of the present invention It is a drawing expressed as

As shown in Fig. 7, the vehicle lamp 2 according to the second embodiment of the present invention is also similar to the vehicle lamp 1 according to the first embodiment of the present invention, the first light source 11, the second 2 light sources 12 , a first solid optic 20 , a second solid optic 230 , an inner lens 240 , and a controller.

The first light source 11 , the second light source 12 , and the first solid optic 20 using the same reference numerals have a configuration common to the vehicle lamp 1 according to the first embodiment of the present invention. A description is omitted.

The control unit of the vehicle lamp 2 according to the present embodiment may also control the on/off and luminous intensity of the first light source 11 and the second light source 12 .

The second solid optic 230 of the vehicle lamp 2 according to the present embodiment also has a truncated pyramid or truncated cone shape with a larger area of the exit surface 31 compared to the incident surface (unsigned) facing the two light sources 12 . can

However, as shown in FIG. 7 , the exit surface 231 of the second solid optic 230 forms an upward inclined surface. Accordingly, the lights L5 and L6 emitted through the emission surface 231 of the second solid optic 230 are upwardly irradiated.

Lights L5 and L6 emitted through the exit surface 231 of the second solid optic 230 form a beam A4 of a second pattern (refer to FIG. 8 ) (of the second pattern described in this embodiment). The beam A4 refers to a pattern different from the beam A2 of the second pattern described in the first embodiment described above).

As shown in FIG. 8 , the beam A4 of the second pattern forms a beam pattern on the cut-off line H. As shown in FIG.

When the low beam operation signal is received, the control unit turns on only the first light source 11 to form a spread pattern of the low beam with the beam A1 of the first pattern, or the first light source 11 and the second light source 12 ) together to form a low beam spread pattern with the beam A1 of the first pattern, and a signal pattern for irradiating a sign on the road with the beam A4 of the second pattern.

In addition, when the control unit receives the DRL operation signal, the first light source 11 and the second light source 12 are turned on together so that the beam A1 of the first pattern and the beam A4 of the second pattern are combined with the DRL pattern. control to form However, since the DRL pattern requires a lower luminous intensity compared to the low beam pattern, when the beam A1 of the first pattern and the beam A4 of the second pattern are used only with the DRL pattern, the controller controls the first light source 11 . It is possible to control the luminous intensity of , which is relatively lower than when used as a low-beam pattern.

9 is a plan view illustrating an emitting surface of an inner lens of a vehicle lamp according to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view taken along line DD of FIG. 9 .

9 and 10 , in the inner lens 240 of the vehicle lamp 2 according to the second embodiment of the present invention, vertical optics 241a are formed on the emission surface 241 .

As shown in FIG. 10 , the inner lens 240 forms an emitting surface 241 having a curved surface, and vertical optics 241a are formed on the emitting surface 241 .

The vertical optics 241a refract the light passing through the optic 241a to the left and right. Accordingly, the inner lens 240 may further extend laterally the irradiation range of the beam of the first pattern and the beam of the second pattern passing through the inner lens 240 .

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.

1, 2: Vehicle lamp
11: first light source
12: second light source
20: first solid optic
30, 230: second solid optic
31a: transverse optics
31b, 241a: longitudinal optics
40, 240: inner lens
21, 31, 31', 241: exit surface

Claims (16)

a first light source;
a first solid optic for emitting light emitted from the first light source as a beam of a first pattern irradiated to a lower portion of a cut-off line to form at least a portion of a low beam pattern;
a second light source; and
and a second solid optic for emitting the light emitted from the second light source as a beam of a second pattern irradiated above and below the cut-off line to form a daytime running light (DRL) pattern or a signal pattern,
The emitting surface of the first solid optic is inclined relative to the incident surface, and light incident horizontally through the incident surface is irradiated downward from the emitting surface. According to claim 1,
The beam of the first pattern forms a spread pattern irradiated to a short distance in front of the vehicle among the low beam patterns, a vehicle lamp. 3. The method of claim 2,
The emitting surface of the first solid optic includes a downward inclined surface so that the beam of the first pattern forms the spread pattern. According to claim 1,
Further comprising a control unit for adjusting the luminous intensity of the second light source,
The control unit adjusts the luminous intensity of the second light source so that the beam of the second pattern is used as the DRL pattern or the signal pattern. According to claim 1,
Transverse optics are formed on an exit surface of the second solid optic so that the beam of the second pattern extends above and below the cut-off line. 6. The method of claim 5,
The vehicle lamp, wherein longitudinal optics are additionally formed on the exit surface of the second solid optic so that the beam of the second pattern is extended to the left and right. According to claim 1,
The vehicle lamp further comprising an inner lens provided in front of the emission surfaces of the first solid optic and the second solid optic to expand the irradiation range of the beam of the first pattern and the beam of the second pattern. a first light source;
a first solid optic emitting the light emitted from the first light source as a beam of a first pattern irradiated to a lower portion of a cut-off line;
a second light source;
a second solid optic for emitting the light emitted from the second light source as a beam of a second pattern irradiated to an upper portion of the cut-off line; and
A control unit for controlling lighting of the first light source and the second light source, and controlling the luminous intensity of the first light source and the second light source,
The control unit turns on the first light source and the second light source at the same time and controls the luminous intensity of the first light source and the second light source, so that the beam of the first pattern forms at least a part of the low beam pattern, A vehicle lamp, wherein the beam of the second pattern forms a signal pattern. 9. The method of claim 8,
The control unit turns on the first light source and the second light source at the same time and controls the luminous intensity of the first light source and the second light source, so that the beam of the first pattern and the beam of the second pattern are DRL (daytime running light) ) to form a pattern, a vehicle lamp. delete 9. The method of claim 8,
The control unit turns on the first light source and turns off the second light source, so that the beam of the first pattern forms at least a part of the low beam pattern. 12. The method of claim 11,
The beam of the first pattern forms a spread pattern irradiated to a short distance in front of the vehicle among the low beam patterns, a vehicle lamp. 13. The method of claim 12,
The emitting surface of the first solid optic includes a downward inclined surface so that the beam of the first pattern forms the spread pattern. 9. The method of claim 8,
The exit surface of the first solid optic includes a downward inclined surface so that the beam of the first pattern is irradiated to a lower portion of the cut-off line,
The emitting surface of the second solid optic includes an upward inclined surface so that the beam of the second pattern is irradiated to an upper portion of the cut-off line. 9. The method of claim 8,
The vehicle lamp further comprising an inner lens provided in front of the emission surfaces of the first solid optic and the second solid optic to expand the irradiation range of the beam of the first pattern and the beam of the second pattern. 16. The method of claim 15,
The inner lens includes longitudinal optics extending the irradiation range left and right.

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