KR20150070816A - Lamp for vehicles - Google Patents

Abstract

Provided is a lamp for vehicles. The lamp for vehicles according to an embodiment of the present invention forming a low beam light emission pattern by overlapping light radiated from multiple light modules comprises a first light module composed of at least one light unit; and a second light module composed of multiple light units, wherein the light unit includes a light source, and a reflector reflecting light to the front, and some of the multiple light units of the second light module expands light emission pattern near a vehicle among the light emission patterns.

Description

Lamp for vehicles

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle lamp, and more particularly, to a vehicle lamp for extending a light distribution pattern in the vicinity of a vehicle to improve the visibility of a driver or a pedestrian.

Generally, a vehicle is equipped with a variety of vehicle lamps having a lighting function and a signal function for notifying other vehicle users or other road users of the traveling state of the vehicle so that an object located in the vicinity of the vehicle can be easily identified at night when traveling .

For example, a headlamp that irradiates light forward to secure a driver's view, a brake that lights when the brake is applied, and a device that operates in a manner of directly emitting light by using a lamp, such as a turn signal used when turning right or left And a reflector functioning in a manner of reflecting light so that the vehicle can be easily recognized from the outside is mounted on the front and rear of the vehicle.

Such automotive lamps have typically used light sources such as halogen lamps or high intensity discharge (HID) lamps.

Recently, a light emitting diode (LED) has been used as a light source. The light emitting diode has a color temperature of about 5500K, which is close to sunlight, which minimizes fatigue in a human eye and minimizes size. But it also has economical efficiency due to its semi-permanent lifetime.

The size of the vehicle lamp has been minimized and a low-beam light distribution pattern is formed by one optical module. However, conventional known vehicle lamps generally use the same vehicle lamps on the left and right sides of the vehicle to reduce the visibility of the vicinity of the vehicle, or to install additional vehicle lamps in order to improve visibility in the vicinity of the vehicle there was.

Therefore, there is a demand for a vehicle lamp that can improve the visibility in the vicinity of the vehicle while reducing the space required for the vehicle lamp.

European Published Patent EP 2,434,204 (Mar. 28, 2012)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a vehicle lamp capable of enhancing visibility of a driver or a pedestrian by expanding a light distribution pattern in the vicinity of a vehicle without arranging a separate lamp will be.

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

According to an aspect of the present invention, there is provided a lamp for a vehicle which forms a low beam light distribution pattern by superimposing light emitted from a plurality of optical modules, the lamp comprising: at least one light unit module; And a second optical module including a plurality of optical units, wherein the optical unit includes a light source and a reflector for forwardly reflecting the light of the light source, and a part of the plurality of optical units of the second optical module , And extends the light distribution pattern in the vicinity of the vehicle in the low beam distribution pattern.

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.

According to the present invention, the visibility near the vehicle can be improved by expanding the light distribution pattern in the vicinity of the vehicle, compared with the case of using the same left and right headlamps, thereby enhancing the safety for the driver and the pedestrian.

Further, since it is not necessary to provide a separate vehicle lamp, it is possible to solve the problem of restriction, parts and cost increase in the space according to the conventional vehicle lamp.

1A and 1B are a perspective view and a plan view of a conventional vehicle lamp.
2 and 3 are views showing a light distribution pattern by a conventional vehicle lamp.
4 is a perspective view of a vehicle lamp according to an embodiment of the present invention.
5A and 5B are plan views of a vehicle lamp according to an embodiment of the present invention.
6A, 6B, and 7 are views showing a light distribution pattern by a vehicle lamp according to an embodiment of the present invention.
8 is a view showing a light distribution pattern by a vehicle lamp according to an embodiment of the present invention.

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

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It should be understood that the terms comprising and / or comprising the terms used in the specification do not exclude the presence or addition of one or more other elements, steps and / or operations in addition to the stated elements, steps and / use. And "and / or" include each and any combination of one or more of the mentioned items.

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

FIGS. 1A and 1B are a perspective view and a plan view of a conventional vehicle lamp, and FIGS. 2 and 3 are diagrams showing a light distribution pattern by a conventional vehicle lamp.

Referring to FIGS. 1A and 1B, a conventional vehicle lamp 10 may include two optical modules 110 and 120. In this case, the optical modules 110 and 120 may include a light source, a reflector that reflects the light emitted from the light source toward the front of the vehicle, and a lens that projects the reflected light.

Referring to FIGS. 2 and 3, the light emitted from the two optical modules 110 and 120 forms a low beam light distribution pattern. The light distribution pattern 130 shown in Fig. 2 is a light distribution pattern that appears on the screen by the conventional vehicle lamp 10. Fig. In this case, L and R on the horizontal axis mean the left direction and the right direction with respect to the vehicle, and U and D on the vertical axis indicate the upward direction and the downward direction with respect to the cutoff line.

In addition, the light distribution pattern 140 shown in FIG. 3 is a light distribution pattern that appears when the horizontal axis is 0 and the vertical axis is 0. In this case, the abscissa denotes the distance from the vehicle, and L and R on the ordinate mean the left direction and the right direction with respect to the vehicle.

As described above, the conventional vehicle lamp 10 uses the same lamps on the left and right sides of the vehicle, so that the visibility in the vicinity of the vehicle is low.

FIG. 4 is a perspective view of a vehicle lamp according to an embodiment of the present invention, and FIGS. 5A and 5B are plan views of a vehicle lamp according to an embodiment of the present invention.

6A, 6B, and 7 are views showing a light distribution pattern by a vehicle lamp according to an embodiment of the present invention, and FIG. 8 is a view showing a light distribution pattern by a vehicle lamp according to an embodiment of the present invention, Fig.

4, 5A and 5B, a vehicle lamp 20 according to an exemplary embodiment of the present invention includes a plurality of optical modules 210 and 220, a plurality of optical modules 210 and 220, The lamp 20 includes a first optical module 210 including at least one optical unit 214 and a second optical module 220 including a plurality of optical units 224 and 228. At this time, the optical units 214, 224, and 228 include a light source (not shown) and a reflector for forwardly reflecting the light of the light source, and the plurality of optical units 224 And 228 can improve the visibility in the vicinity of the vehicle by expanding the light distribution patterns 235 and 245 in the vicinity of the vehicle among the low beam distribution patterns.

Each of the first and second optical modules 210 and 220 includes shades 216 and 226 for blocking a part of the light reflected by the reflector and lenses 212 and 222 for projecting the light reflected from the reflector .

In the embodiment of the present invention, a case where the reflector is disposed on the upper side with respect to the optical axis and is used for light irradiation of the low beam distribution pattern will be described as an example.

In the embodiment of the present invention, two optical modules 210 and 220 including lenses 212 and 222, a light source (not shown), a reflector, and shades 216 and 226 are used However, the configuration and the number of the optical modules 210 and 220 may be added or deleted.

The light source may be installed on a plate disposed on the upper surface of the shades 216 and 226 to emit light upward, and may be a light emitting diode (LED), a bulb, or the like.

Here, the light emitting diode is a semiconductor device that converts current into direct light by using a phenomenon in which electrons in the n region meet the pores of the p region to cause recombination light emission when a voltage is applied in the forward direction using the p-n junction of the semiconductor.

Generally, a white light emitting diode having a single light emitting chip having a size of about 1 mm square is used, but the present invention is not limited thereto.

Also, the light source of the lamp 20 for a vehicle according to an embodiment of the present invention includes a multi-chip LED package having a higher light amount than a white light emitting diode having a single light emitting chip, Or downwardly at a predetermined angle. In general, since light having a higher light intensity than that of a light source used in a vehicle lamp can be irradiated and light leakage can be reduced, the light efficiency can be improved, so that the visibility of the vehicle lamp 20 can be improved.

The reflector may have an elliptical curved surface or a free curved surface which is disposed on the upper side of the light source and is open at one side so as to reflect the light emitted from the light source, and the light source may be disposed at the first focus of the reflector.

On the other hand, in the embodiment of the present invention, the reflector is arranged on the upper side of the light source, not only the entire reflector is disposed on the upper side of the light source, but also some of the reflectors are arranged on the upper side of the light source.

Further, in the embodiment of the present invention, the light irradiated from the light source is reflected by the reflector and projected to the front of the lenses 212 and 222. At this time, the position of the light source is fixed and the direction of light transmission is constant. However, in order to adjust the irradiation direction to the upper and lower sides or the left and right of the light according to the design intention, Or may be arranged to be inclined at a predetermined angle.

The shades 216 and 226 are disposed in front of the light source and cut off a part of the light emitted from the light source to form a cut-off line in the light distribution pattern. The shades 216 and 226 The shape of the groove may be variously changed, though it may be a plate shape in which a semicircular groove is formed at one end.

In an embodiment of the present invention, the upper surfaces of the shades 216 and 226 may simply block the light reflected by the reflector, but in this case the light efficiency is reduced, so that the shades 216 and 226, And may be made of a material capable of reflecting at least a part of the light incident on the upper surface.

The lenses 212 and 222 project the light emitted from the light source and may include an aspherical lens.

It may also include a heat sink (not shown) coupled to the first and second optical modules 210 and 220 in an embodiment of the present invention. The heat sink is coupled to the rear surface of the reflector and / or shades 216 and 226 to suppress the temperature rise of the vehicle lamp by radiating heat emitted by the light source. At this time, the heat sink may include a plurality of heat radiating fins on at least one surface of the heat sink to increase the heat dissipating area.

Meanwhile, in the embodiment of the present invention, a light emitting diode can be used as the light source. Since the light emitting diode is vulnerable to heat at high temperatures, performance deterioration may occur. Therefore, in order to prevent a temperature rise due to heat emitted from the light emitting diode, in need.

Also, the first optical module 210 may form a spot beam light distribution pattern, and the second optical module 220 may form a spread beam light distribution pattern. Here, the spot beam distribution pattern is a beam that illuminates the far field of the vehicle, and the spread beam distribution pattern means a beam that illuminates the vicinity of the vehicle. However, the first optical module 210 forms a spot beam light distribution pattern, and the second optical module 220 is not limited to form a spread beam light distribution pattern, and the first and / or second optical modules 210, 220 to form a spot or spread beam distribution pattern.

In addition, the illuminance of the light emitted from the first optical module 210 may be higher than that of the light emitted from the second optical module 220. Therefore, the first optical module forming the spot beam light distribution pattern is easy to illuminate the far side of the vehicle. However, if the spot and spread beam distribution patterns can be formed from the first and second optical modules 210 and 220, the illuminance of the light emitted from the first optical module 210 and the second optical module 220 is not limited Do not.

It is possible to form a low beam light distribution pattern with one vehicle lamp 20 including the first and second optical modules 210 and 220, thereby optimizing the space efficiency, and the spot beam distribution pattern and the spread beam distribution pattern The light can be irradiated to both the near and far sides of the vehicle. However, the detailed configuration of the first and second optical modules 210 and 220 is not limited as long as the spot light distribution pattern and the spread light distribution pattern can be formed to irradiate light to both the near and far sides of the vehicle.

The first optical module 210 includes the first optical unit 214 that forms the spot beam light distribution pattern and the second optical module 220 includes the second light that forms the spread beam distribution pattern Unit 224 and a third optical unit 228 that extends both sides of the spread beam distribution pattern. At this time, the optical axis of the third optical unit 228 may be at an angle with the optical axis of the second optical unit 224. That is, in the case of the right-side vehicle lamp of the vehicle, the third light unit 228 extends the right-side light distribution pattern 245 in the vicinity of the vehicle toward the right side of the vehicle, The third light unit 228 extends the left side light distribution pattern 235 of the vicinity of the vehicle toward the left side of the vehicle.

5A, the third light unit 228 is inclined toward the right side of the vehicle, and the light emitted from the light source and reflected by the reflector is transmitted through the lens 22 to the right side of the vehicle, The right side of the spread beam distribution pattern can be extended like the light distribution pattern 240 shown in FIG.

5B, the third light unit 228 is tilted toward the left side of the vehicle, and is emitted from the light source and reflected by the reflector. In this case, The left side of the spread beam distribution pattern can be extended like the light distribution pattern 230 shown in FIG. 6B.

Accordingly, there is an advantage that the visibility of the driver and the pedestrian can be improved by extending the left and right sides of the spread beam distribution pattern that illuminates the vicinity of the vehicle, such as the light distribution pattern 250 shown in Fig.

5A and 5B, the third light unit 228, which is tilted to the left or right of the vehicle in the embodiment of the present invention, is shown as being located at the center, The inclination angle, etc. of the third optical unit 228 tilted to the left or right of the vehicle is not limited.

The vehicle lamp 20 according to an embodiment of the present invention can be interlocked with a SBL (Static Bending Light) device capable of minimizing a blind spot at the time of turning the vehicle. At this time, the extended light distribution pattern 250 can interlock with the SBL device to extend the light distribution pattern in the vicinity of the vehicle. That is, the low beam light distribution pattern 250 in which the light distribution pattern in the vicinity of the vehicle is extended is formed by supplying electric power to the third light unit 228 tilted to the left or right of the vehicle at the time of changing the direction of the vehicle, It is possible to secure a sufficient amount of light with respect to the direction in which the direction is switched, thereby reducing the blind spot of the driver. However, if the driver's blind spot can be reduced, the method, configuration, and the like of the vehicle lamp 20 according to the embodiment of the present invention can be easily employed by those skilled in the art All methods, configurations, and the like.

Also, the vehicle lamp 20 according to an embodiment of the present invention may be interlocked with an adaptive front lighting system that switches a light distribution pattern according to the driving state of the vehicle. At this time, the extended light distribution pattern 250 can expand the light distribution pattern in the vicinity of the vehicle in cooperation with the adaptive headlight system. Here, the adaptive headlight system is a system for creating an optimum driving environment according to the traveling state of the vehicle, for example, the traveling speed of the vehicle, the road surface condition, and the ambient brightness. Particularly, the low beam light distribution pattern 250, in which the light distribution pattern in the vicinity of the vehicle is extended, is arranged such that when the vehicle in the adaptive headlight system is traveling at a predetermined speed or less (Class-V) And may be formed by supplying electric power to the tilted third optical unit 228. [ The vehicle lamp 20 according to the embodiment of the present invention can be connected to secure a sufficient amount of light with respect to the vicinity of the vehicle when the vehicle travels at a speed lower than a predetermined speed and visibility to the vicinity of the vehicle is required like a city area, There is an advantage that the safety of pedestrians can be improved. However, if the safety of the driver or the pedestrian can be improved, the method, structure, and the like in which the vehicle lamp 20 according to the embodiment of the present invention is interlocked with the adaptive headlight system can be easily performed by those skilled in the art And may include any methods, configurations, etc. that may be employed.

The vehicle lamp 20 according to an embodiment of the present invention can be used not only in the SBL apparatus or the adaptive headlight system but also in a case where it is necessary to secure a sufficient amount of light in the vicinity of the vehicle. In this case, since a sufficient amount of light can be secured in the vicinity of the vehicle without adding a new optical module, there is an advantage in securing a space in the vehicle and reducing the number of components.

In addition, one of the first and second optical modules 210 and 220 may include a signal plate (not shown) extending from the front end of the shades 216 and 226 to form a signal beam. Here, the signal beam is a beam for increasing the front view for identification of road signs and the like during nighttime driving and securing the distance visibility of the night driver. Generally, the signal plate is required to have a width of 20 mm and a width of 15 mm. However, the width of the signal plate is not limited.

Referring to FIG. 8, it is possible to confirm the effect of enhancing the neighborhood visibility of the vehicle by the vehicle lamp 20 according to the embodiment of the present invention. The light distribution pattern 250 irradiated from the light emitting lamp 20 according to an embodiment of the present invention can irradiate light over a wide area as compared with the light distribution pattern 140 irradiated from the conventional vehicle lamp 10. [ It is possible to irradiate a wider area by the light distribution pattern 245 irradiated near the right side of the vehicle and the light distribution pattern 234 irradiated near the left side of the vehicle among the light distribution patterns shown in Fig. Therefore, the visibility of the driver or the pedestrian to the vicinity of the vehicle can be improved compared with the conventional vehicle lamp 10 without adding a separate vehicle lamp, and the safety of the driver and the pedestrian is also ensured.

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

10: Conventional vehicle lamp
20: Vehicle lamp
110: a first optical module of a conventional vehicle lamp
120: a second optical module of a conventional vehicle lamp
140: a light distribution pattern by a conventional vehicle lamp
210: first optical module
220: second optical module
250: light distribution pattern by vehicle lamp

Claims (10)

A lamp for a vehicle which forms a low beam distribution pattern by superimposing light emitted from a plurality of optical modules,
A first optical module comprising at least one optical unit; And
And a second optical module including a plurality of optical units,
Wherein the optical unit includes a light source and a reflector for forwardly reflecting the light of the light source,
Wherein a part of the plurality of optical units of the second optical module extends the light distribution pattern in the vicinity of the vehicle in the low beam distribution pattern. The method according to claim 1,
The first optical module forms a spot beam light distribution pattern,
Wherein the second optical module forms a spread beam distribution pattern. The method according to claim 1,
Wherein the illuminance of the light emitted from the first optical module is higher than the illuminance of the light emitted from the second optical module. The method of claim 3,
Wherein the first optical module includes a first optical unit that forms the spot beam light distribution pattern,
Wherein the second optical module includes a second optical unit forming the spread beam distribution pattern and a third optical unit extending both sides of the spread beam distribution pattern. 5. The method of claim 4,
And the optical axis of the third optical unit forms an angle with the optical axis of the second optical unit. The method according to claim 1,
Wherein the light source is tilted at a predetermined angle to the upper side or the lower side of the vehicle. The method according to claim 1,
Wherein each of said first and second optical modules includes a shade for blocking a part of the light reflected by said reflector and a lens for projecting the light reflected from said reflector. 8. The method of claim 7,
Wherein one of the first and second optical modules has a signal plate extending from a front end of the shade to form a signal beam. The method according to claim 1,
Wherein the extended light distribution pattern extends in a light distribution pattern in the vicinity of the vehicle in cooperation with a SBL (Static Bending Light) device. The method according to claim 1,
Wherein the extended light distribution pattern is interlocked with an adaptive front lighting system to expand the light distribution pattern in the vicinity of the vehicle.

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