KR101460730B1 - Lamp apparatus for an automobile - Google Patents

Abstract

A lighting apparatus for an automobile according to an embodiment of the present invention includes a first light source for generating light, a second light source for generating light and spaced apart from the first light source, a lens for distributing the light to the outside, Wherein the first light source and the second light source are disposed between the lens and the reflective portion, and the reflective portion includes the first light source and the second light source, And a second reflector for reflecting light generated by the second light source toward the lens. The first reflector reflects the light generated in the second light source toward the lens, and the second reflector reflects the light generated from the second light source toward the lens.

Description

[0001] LAMP APPARATUS FOR AN AUTOMOBILE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus for an automobile, and more particularly, to a lighting apparatus for an automobile which improves the heat dissipation characteristics of the lighting apparatus and has improved luminous efficiency and energy efficiency.

A car is a means of transporting passengers and cargo on the road by producing power from its own engine and delivering it to the wheels. A car can be divided into a body, which forms a large appearance, and a chassis, in which various devices are connected to each other. The chassis includes the main devices such as power transmission devices, steering devices, suspension devices, and braking devices, as well as automobile engines that are the driving force of driving.

The engine is the driving force that drives the car. Most automotive engines are four-stroke internal combustion engines. A four-stroke internal combustion engine is the most common example of a reciprocating engine with an internal combustion engine ending one cycle by four strokes of suction, compression, explosion, and exhaust. The internal combustion engine, which mainly uses volatile fuel, obtains the kinetic energy by directly using the heat energy generated when the fuel is mixed with the oxygen in the air to be completely burned and then burned.

In general, a headlamp is provided in front of the automobile so that the driver can recognize the position of the road surface and the obstacle by illuminating the front of the automobile during nighttime driving so that the driver can secure visibility.

A typical head lamp includes a light source that generates light, a reflector that reflects the light generated by the light source, and a lens that distributes the light reflected from the reflector to the outside of the automobile.

The conventional head lamp operates in a low beam mode in which light to be distributed to the outside is directed to the road surface and in a high beam mode in which the light to be distributed to the outside is highly distributed.

The headlamp should ensure visibility for the driver of the traveling car, and should not cause glare to the driver of the vehicle traveling ahead (the preceding car and the opposite car).

For example, when there is no automobile running in front, the head lamp is set to the high beam mode to secure visibility. When there is a car running ahead, the driver of the automobile traveling forward is set to the low beam mode, Should not trigger.

Currently, when a light emitting element is widely used as a light source and two light sources are used for proper light intensity, the current reflector structure has a structure in which two light sources are disposed adjacent to each other, so that heat is concentrated, There is a problem. In recent years, a light emitting device (LED) is widely used as a light source of a lighting device of an automobile. The light emitting device is sensitive to heat, and when the temperature of the light emitting device rises, the brightness decreases.

Further, in order to release heat generated from the light source, facilities such as a heat sink and a fan are required, which leads to an increase in cost and a large space. In addition, electric energy is required to operate a device such as a heat sink and a fan, which causes a problem of deteriorating the fuel efficiency of the automobile.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting device for an automobile which improves the heat radiation efficiency, luminous efficiency and energy efficiency of a lighting device.

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 an automotive lighting apparatus including a first light source for generating light, a second light source for generating light and spaced apart from the first light source, a lens for distributing the light to the outside, A support plate on which the first light source and the second light source are disposed, and a reflector that reflects the light by the lens reflections, wherein the first light source and the second light source are disposed between the lens and the reflector, The reflector includes a first reflector that reflects light generated by the first light source toward the lens, and a second reflector that reflects light generated by the second light source toward the lens.

According to the automobile of the present invention, there are one or more of the following effects.

First, in the automobile lighting system of the embodiment, since the first light source and the second light source are arranged so as to be spaced apart from each other by twice the focal length of the ellipse, the light sources are disposed farther than before, When the light source is a light emitting device, the lifetime and efficiency of the light source can be improved.

Second, it is possible to remove the heat dissipating device such as the heat pipe and the fan attached to the lighting device, thereby saving the production cost of the automobile and saving the electric energy for operating the heat dissipating device, I have.

Third, the heat radiation device such as the heat pipe and the fan can be omitted, so that the efficiency of the work process can be improved, the cost of the parts of the automobile can be reduced, and the weight of the automobile can be reduced.

Fourth, since the luminous intensity of the illumination device is improved and the efficiency is improved, the energy of the automobile can be saved, and the degree of convergence can be improved to ensure remote visibility.

Fifth, when the brightness as in the past is required, it has an advantage that it can be driven at a lower power than the conventional lighting apparatus.

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 an automobile according to an embodiment.
2 is a perspective view showing a lighting device of an automobile according to the embodiment of FIG. 2; FIG.
3 is a partial cross-sectional view of a lighting apparatus for an automobile according to the embodiment.
FIG. 4A is a conceptual layout diagram of a lighting apparatus for an automobile according to the embodiment, and FIG. 4B is a layout perspective view of a lighting apparatus for a vehicle according to the embodiment.
5A and 5B are diagrams comparing efficiency and luminosity of the comparative example and the embodiment.

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.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" Can be used to easily describe the correlation of components with other components. Spatially relative terms should be understood as terms that include different orientations of components during use or operation in addition to those shown in the drawings. For example, when inverting an element shown in the figures, an element described as "below" or "beneath" of another element may be placed "above" another element . Thus, the exemplary term "below" can include both downward and upward directions. The components can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation.

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. &Quot; comprises "and / or" comprising ", as used herein, unless the recited component, step, and / or step does not exclude the presence or addition of one or more other elements, steps and / I never do that.

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.

In the drawings, the thickness and the size of each component are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size and area of each component do not entirely reflect actual size or area.

Further, the angles and directions mentioned in the description of the structure of the embodiment are based on those shown in the drawings. In the description of the structures constituting the embodiments in the specification, reference points and positional relationships with respect to angles are not explicitly referred to, reference is made to the relevant drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings for explaining an automobile lighting apparatus according to embodiments of the present invention.

1 is a perspective view showing an automobile equipped with a lighting apparatus for a vehicle according to an embodiment.

Referring to Fig. 1, a lighting apparatus 100 of an automobile according to an embodiment of the present invention is mounted in front of a vehicle 1. Fig. Therefore, in the present embodiment, the automobile lighting apparatus 100 includes a head lamp, a fog lamp, a turn lamp, and the like, which ensure the driver's front night vision. However, in another embodiment of the present invention, the vehicle lamp unit may be mounted at the rear of the vehicle 1 to serve as a tail lamp or the like.

The lighting apparatus 100 of the vehicle is mounted on the left and right of the front of the vehicle 1, respectively. In addition, it can be formed into various shapes in consideration of the driver's taste. In this embodiment, the shape of each eye is formed.

3 is a partial cross-sectional view of an automobile lighting device according to an embodiment, taken along an XZ plane, FIG. 4A is a conceptual layout diagram of a lighting device of an automobile according to an embodiment, Fig. 4B is a perspective view of the arrangement of a lighting apparatus of an automobile according to the embodiment; Fig.

2 to 4, an automotive lighting apparatus 100 according to an embodiment includes a first light source 21 that generates light, a second light source that generates light and is spaced apart from the first light source 21 A support plate 61 on which the first light source 21 and the second light source 22 are disposed; a reflector for reflecting the light on the echoes of the lens 10; (Not shown).

A first light source (21) and a second light source (22) are provided on the support plate (61). The support plate 61 serves to fix the first light source 21 and the second light source 22 at appropriate positions. There are no restrictions on the method of installation, and mounting, soldering, etc. methods can be used.

Further, the support plate 61 may be disposed between the reflection portion 30 and the lens 10. This may serve to cut off part of the light generated in the light source so that the support plate 61 does not cause glare to the driver of the vehicle traveling ahead (the preceding vehicle and the opposite vehicle). The shape of the support plate 61 is not limited, but may be a panel shape having a sufficient length so that the first light source 21 and the second light source 22 can be installed. The support plate 61 supplies power to the first light source 21 and the second light source 22.

Further, the support plate 61 may be connected to the direction adjusting unit 70 to adjust the traveling direction of the light source of the lighting apparatus 100 of the vehicle.

The lens 10 is formed as an aspherical surface, and a material that transmits light can be used. The shape of the lens 10 is not limited and may have various shapes in consideration of design. The lens 10 serves to distribute the light generated by the light sources 21 and 22 and reflected by the reflector 30 to the outside of the automobile. There is no limitation to the shape of the lens 10, and the concentration or dispersibility of light is improved according to the shape of the lens, thereby enabling light to be distributed in various paths.

The illumination device 100 of the automobile further includes a housing 40 fixing the support plate 61 and having a space therein and a lens 40 coupled to the front of the housing 40 and coupled with the lens 10, And further includes a holder (50). Here, the housing 40 is inserted into the interior of the automobile from the front of the automobile, so that the automobile lighting apparatus 100 according to the embodiment of the present invention is disposed in front of the automobile. That is, the housing 40 and the lens holder 50 protect the components of the lighting apparatus 100 of the vehicle, form an appearance, and fix a relative position. The shape of the housing 40 and the lens holder 50 may be a shape having an internal space, but is not limited thereto.

The connecting method of the support plate 61 and the housing 40 is not limited and can be connected and fixed by the fixing bar 61, for example, as shown in Fig.

Further, a reflection layer for reflecting light generated from the light source may be further formed on the support plate 61.

The first light source 21 and the second light source 22 are devices for generating light. The first light source 21 and the second light source 22 may be, for example, light emitting diodes. The light emitting device may be, for example, a colored light emitting diode that emits light such as red, green, blue, or white, or a UV (Ultra Violet) light emitting diode that emits ultraviolet light. Also, one or more chips may be mounted on the light emitting device. Further, the light emitting elements may be arranged alternately with chips emitting red, green or blue light to realize white light. The first light source 21 and the second light source 22 are spaced apart from each other, and a detailed description thereof will be described later.

The reflector 30 reflects light generated by the first light source 21 and the second light source 22 toward the lens 10. The first light source 21 and the second light source 22 are arranged in the order of the lens 10 and the reflecting portion 30 30, respectively.

The reflector 30 includes a first reflector 31 for reflecting the light generated by the first light source 21 toward the lens 10 and a second reflector 31 for reflecting the light generated by the second light source 22 toward the lens 10 And a second reflector 32 that reflects the light emitted from the second reflector.

The inner surface of the first reflector 31 and the second reflector 32 may further include a reflective layer 35 for improving the reflectivity and the reflective layer 35 may be formed of a material having a high reflectance. , Al, an Ag alloy, and an Al alloy. However, the present invention is not limited thereto, and the reflective layer 35 may be formed integrally with the first reflector 31 and the second reflector 32. [

3 and 4, the first reflector 31 forms a first ellipse opened in the direction of the first light source 21 and the second reflector 32 forms a second ellipse in the direction of the second light source 22 And is formed to be connected to the first reflector (31).

The focuses (X, X1) of the first ellipse and the focuses (X, X2) of the second ellipse are arranged on the same line (A), and the first and second ellipses (X). The first ellipse and the second ellipse share one focus (X), which means that the first ellipse and the second ellipse have the same focal position.

To be more specific, the first reflector 31 and the second reflector 32 have an elliptical shape that shares the focal point, and only some shape of the elliptical shape is formed. The first ellipse and the second ellipse are formed in a width direction (Y axis) of the vehicle at a portion (B) where the first ellipse and the second ellipse contact each other. That is, the cross-sectional shape of the first reflector 31 and the second reflector 32 viewed from above may have a w-shape as shown in FIG. 4A. Here, the fact that the focal points are arranged on the same line A does not mean complete collinearity in the mathematical sense, but means the same line in a range allowing a certain error. In addition, the line A connecting the foci of the first ellipse and the second ellipse may be horizontally disposed along the width direction (Y axis) of the vehicle. Here, the horizontal meaning does not mean the complete level of the mathematical meaning but means the degree parallel to the naked eye.

In addition, the portion (B) where the first ellipse and the second ellipse contact each other and the focus (X) shared by the first ellipse and the second ellipse may be located on the same line. Preferably, a line connecting the first ellipse with the second ellipse and a line connecting the first ellipse with the focus X shared by the second ellipse is parallel to the traveling direction of the vehicle . This causes the light to proceed to the correct path.

Preferably, the focal lengths of the first ellipse and the second ellipse may be equal to each other. That is, the distance between the first light source 21 and the first light source 21 at the focus X shared by the first ellipse and the second ellipse is smaller than the distance between the second light source 22 ). ≪ / RTI > This is to balance the light reflected by the first reflector 31 and the second reflector 32.

The first light source 21 is located at a focus X1 that is not shared with the second ellipse of the focus of the first ellipse and the second light source 22 is located at a focus (X2). The light generated from the first light source 21 and the second light source 22 is reflected by the shapes of the first reflector 31 and the second reflector 32 and proceeds toward the lens 10.

In addition, the center O of the lens 10 and the focus X shared by the first ellipse and the second ellipse can be arranged on the same line. This causes the light to proceed to the correct path.

The illuminating device 100 of the automobile may further include a reflector 33 disposed in the focus X direction shared by the first ellipse and the second ellipse at a portion B where the first ellipse contacts the second ellipse .

The reflection plate 33 serves to prevent loss of light generated in the light sources 21 and 22. That is, a part of the light generated from the light sources 21 and 22 is reflected by the reflection part 30 and advances in the direction of the support plate 61 to decrease the light intensity. The light is reflected back to the reflection part 30 . The shape of the reflection plate 33 is not limited, but may have a crescent shape as shown in Fig. 4B. However, the present invention is not limited thereto. The reflector 33 may be made of a material having a high reflectance and may include at least one of Ag, Al, Ag alloy and Al alloy, for example.

In the case of using two light sources, the conventional reflector structure has a structure in which two light sources are disposed adjacent to each other, so that heat is concentrated and heat dissipation performance is also deteriorated. In recent years, a light emitting device (LED) is widely used as a light source of a lighting device of an automobile. The light emitting device is sensitive to heat, and when the temperature of the light emitting device rises, the brightness decreases. Further, in order to release heat generated from the light source, facilities such as a heat sink and a fan are required, which leads to an increase in cost and a large space. In addition, electric energy is required to operate a device such as a heat sink and a fan, which causes a problem of deteriorating the fuel efficiency of the automobile.

Therefore, since the first light source 21 and the second light source 22 of the automobile lighting apparatus 100 according to the embodiment have a structure in which they are spaced apart by twice the focal length of the ellipse, the light sources are arranged farther than before, The heat generated from the light source can be dispersed, and when the light source is a light emitting device, the lifetime and efficiency of the light source can be improved. In addition, it is possible to remove the heat dissipating device such as the heat pipe and the fan, so that the production cost of the automobile can be reduced and the electric energy for operating the heat dissipating device can be saved, thereby improving the fuel efficiency of the automobile. In addition, since the heat radiating device such as heat pipe and fan can be omitted, the efficiency of the work process can be improved, the cost of parts of the automobile can be reduced, the weight of the automobile can be reduced, and the fuel efficiency of the automobile can be improved.

5A and 5B are diagrams comparing efficiency and luminosity of the comparative example and the embodiment.

5A, the structure of the reflector is a structure in which a part of two ellipses are overlapped. However, since the focal point, which is not shared as compared with the focus shared by the two ellipses, is biased toward the lens side, As shown in FIG. This results in heat concentration, and degrades the brightness and lifespan. As shown in Fig. 5A, the luminous intensity for comparison is 47000 cd (candela) and the efficiency is 41.9%.

5B, although the structure of the reflector is a structure in which a part of two ellipses are overlapped, since the focus shared by two ellipses and the unshared focus are located on the same line, the distance where the two light sources are located is It will move away. Therefore, the concentration of heat can be reduced, and various heat dissipation devices can be omitted. As shown in Fig. 5B, the luminous intensity of the embodiment is 70000 cd and the efficiency is 52.3%, which shows that the efficiency and the luminous intensity are remarkably improved as compared with the comparative example. Therefore, the embodiment can contribute to energy saving, low power consumption, light weight, and environmental friendliness of an automobile.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

Claims (11)

A first light source for generating light;
A second light source that generates light and is spaced apart from the first light source;
A lens for distributing the light to the outside;
A support plate having the first light source and the second light source disposed thereon and connected to a direction control unit for controlling a traveling direction of the first light source and the second light source; And
And a reflector for reflecting the light generated by the first light source and the second light source by the lens eaves,
Wherein the first light source and the second light source are disposed between the lens and the reflective portion,
The reflector includes:
A first reflector for reflecting light generated by the first light source toward the lens;
And a second reflector for reflecting the light generated by the second light source toward the lens,
Wherein the first reflector forms a first ellipse opened in the first light source direction,
Wherein the second reflector forms a second ellipse opened in the second light source direction and is connected to the first reflector,
The foci of the first ellipse and the foci of the second ellipse are arranged on the same line, and one focal position is equally shared,
Wherein the first light source is located at a focus not shared with the second ellipse of the focus of the first ellipse,
Wherein the second light source is located at a focus not shared with the first ellipse of the focus of the second ellipse. delete delete delete delete The method according to claim 1,
And a reflector disposed at a portion where the first ellipse and the second ellipse contact each other, the reflector being disposed in a focus direction shared by the first ellipse and the second ellipse. The method according to claim 1,
And a line connecting the focal points of the first ellipse and the second ellipse is horizontally arranged along the width direction of the automobile.

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