KR20130048538A - A lamp apparatus for vehicles - Google Patents

A lamp apparatus for vehicles Download PDF

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Publication number
KR20130048538A
KR20130048538A KR1020110113427A KR20110113427A KR20130048538A KR 20130048538 A KR20130048538 A KR 20130048538A KR 1020110113427 A KR1020110113427 A KR 1020110113427A KR 20110113427 A KR20110113427 A KR 20110113427A KR 20130048538 A KR20130048538 A KR 20130048538A
Authority
KR
South Korea
Prior art keywords
light
unit
light source
source unit
lamp device
Prior art date
Application number
KR1020110113427A
Other languages
Korean (ko)
Inventor
원종태
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020110113427A priority Critical patent/KR20130048538A/en
Publication of KR20130048538A publication Critical patent/KR20130048538A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp device for a vehicle, and in particular, a light source unit including a plurality of light sources individually lit and irradiating light, a lens unit spaced apart from the front side of the light source unit, and configured to transmit irradiated light; It is disposed so as to surround the light source portion, the reflection portion for reflecting the light emitted from the light source portion in the direction provided with the lens portion includes a housing portion formed on the inner surface, the reflecting portion, a plurality of unit reflection surface of hexagon shape (hexagon) shape It is formed on the inner side of the housing part, providing an advantage of preventing reflection loss and preventing degradation of the overall optical performance.

Description

A lamp apparatus for vehicles

The present invention relates to a vehicle lamp device, and more particularly, to a vehicle lamp device that highlights only the target to the driver by irradiating light only to the target.

In general, a lamp is a device that generates power by receiving power from a battery or the like, and a vehicle lamp device installed in an automobile radiates light forward to secure a driver's view. As a light source for a vehicle lamp device, a halogen lamp or a gas-spinning lamp is usually used. However, recently, LEDs (Light Emitting Diodes) which have low power consumption and excellent brightness are used as light sources.

The vehicle lamp device detects night pedestrians using a near-infrared camera to reduce traffic accidents of night pedestrians, and transmits the detected information to the ECU so that the vehicle lamp device can accurately illuminate the pedestrians.

In the conventional vehicle lamp device, a mechanical optical module and a multi-module fixed optical module are used.

The mechanical optical module is a mechanically driven lamp device, which allows accurate and continuous target tracking but has a long reaction time of the driving unit, does not detect a single target, and high system cost by mounting the driving unit.

In addition, the multi-module fixed optical module sets a different light distribution area for each module to irradiate light to the light distribution area set upon recognition of pedestrians, and so on. Although there is an advantage that the cost can be reduced because it can be deleted, it takes up a lot of the internal space of the lamp device, and since the separate modules are distributed, there is a problem that it is difficult to accurately set the respective light distribution area.

On the other hand, in general, a vehicle lamp device, the light irradiated from the light source unit, such as the LED is reflected through the reflector formed on the inner surface of the housing disposed to surround the light source unit, and then refracted through the front lens unit to finally target the target The light will be irradiated.

However, the reflector is formed by smoothly depositing the inner surface of the housing with an aluminum material in order to easily reflect light, such as a mirror surface, which is not a problem in the reflector where the deposition of the aluminum material is well performed, but some aluminum materials In the part of the reflector that is missing or poorly deposited, the light emitted from the light source does not reflect, and thus the emitted light does not satisfy the light distribution by leaving the intended path, or the light of the light pattern is irradiated, or some light This unirradiated dark part occurred and there existed a problem of reducing the overall optical performance.

The problem to be solved by the present invention is to provide a vehicle lamp device for selectively irradiating light only to pedestrians.

In addition, another object of the present invention is to provide a vehicle lamp device having a high beam function as well as for pedestrian lighting.

In addition, another object of the present invention is to provide a lamp device for a vehicle that does not degrade the overall optical performance.

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.

In order to achieve the above object, the vehicle lamp device according to a preferred embodiment of the present invention, the light source unit including a plurality of light sources that are individually turned on to irradiate light, and is spaced apart from the front side of the light source unit, And a housing disposed to surround the light source, and a reflector configured to enclose the light source unit and reflecting light emitted from the light source unit in a direction in which the lens unit is provided, wherein the reflector includes a hexagon ( A plurality of hexagonal unit reflection surfaces are formed on all inner surfaces of the housing.

In addition, the plurality of unit reflection surfaces may be formed such that the length becomes longer and the width becomes narrower toward the central axis of the rear end of the housing.

In addition, the plurality of light sources may be LEDs.

In addition, the lens unit may be formed of an aspherical lens.

The apparatus may further include a shield disposed between the light source unit and the lens unit to block a part of light emitted from the light source unit, and the unit reflection surface may be formed only up to a position where the shield is disposed.

According to the vehicle lamp device of the present invention has one or more of the following effects.

First, by separately irradiating light to a desired target such as pedestrians to prevent excessive glare around, there is an advantage of reducing the risk of driving by selecting only pedestrians and the like.

Second, there is an advantage to significantly reduce the number of parts used in the vehicle lamp device to reduce the cost, and to reduce the weight.

Third, there is also an advantage to save energy by using the LED light source.

Fourth, there is an advantage to implement the function of high beam (High Beam) as well as for pedestrian lighting.

Fifth, there is an advantage in that it is possible to prevent the degradation of the emotional quality of consumers, such as the generation of dark areas and unsatisfactory light distribution, without degrading the overall optical performance of the vehicle lamp device.

Effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a cross-sectional view showing a vehicle lamp device according to an embodiment of the present invention,
2A and 2B are side exploded perspective views illustrating a principle in which light is radiated from a vehicle lamp device according to an embodiment of the present invention;
3 is an exploded perspective view of a vehicle lamp device according to an embodiment of the present invention,
4 is a perspective view illustrating an inner surface of a housing including a reflecting unit in the configuration of FIG. 3;
FIG. 5 is a plan view illustrating a reflection unit in the configuration of FIG. 3;
FIG. 6 is a conceptual diagram comparing the area of light irradiated by the reflector in the configuration of FIG. 3 with the conventional reflector.

An embodiment of a lamp unit according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a cross-sectional view showing a vehicle lamp device according to an embodiment of the present invention, Figures 2a and 2b is a side exploded perspective view illustrating the principle that the light is irradiated from the vehicle lamp device according to an embodiment of the present invention 3 is an exploded perspective view of a vehicle lamp device according to an embodiment of the present invention, Figure 4 is a perspective view showing the inner surface of the housing including a reflecting portion of the configuration of Figure 3, Figure 5 is a configuration of Figure 3 FIG. 6 is a plan view showing a heavy reflector, and FIG. 6 is a conceptual view comparing the area of light irradiated by the reflector in the configuration of FIG. 3 with a conventional reflector.

Referring to FIG. 1, a vehicle lamp apparatus 100 according to an exemplary embodiment of the present invention may include a lens unit 130 through which light passes and a light source unit disposed behind the lens unit 130 and generating light. 110, the reflector 121 reflects the light generated by the light source unit 110 and passes the focal point of the lens unit 130, and is disposed at the focal point of the lens unit 130, and the bar-shaped body rotates on the axis of rotation. And a shield 140 in which one region is inserted to form a plane.

The lens unit 130 may be formed of an aspherical lens. The lens unit 130 may form a surface that receives light and a surface that emits light. The lens unit 130 may be formed of a cross-sectional aspherical lens having a plane of incidence for receiving light. In addition, the lens unit 130 may be an aspherical surface for emitting light. The lens unit 130 may be formed of a transparent optical material such as glass or plastic, but is not necessarily limited thereto.

The lens unit 130 may be disposed in one region of the housing unit 120 surrounding the reflecting unit 121. For example, the lens unit 130 may be disposed in an opening having a larger diameter among two openings formed through the housing 121, but is not limited thereto.

The lens unit 130 may refract light. The lens unit 130 may refract the light reflected by the reflector 121 and incident. The lens unit 130 may concentrate light and emit it to the outside. In addition, the lens unit 130 may receive the light generated by the light source unit 110 to increase the luminous flux (light). The lens unit 130 may straighten the light incident from the light source unit 110.

As described above, the light source unit 110 may be disposed in the housing 120 having the reflector 121 formed on an inner surface thereof. The light source unit 110 may be disposed in the concave portion of the reflecting unit 121 of the inside of the housing unit 120, and may be disposed in the center of the vertical section of the reflecting unit 121. The light source unit 110 may be installed at an installation end 111 installed as a central axis of an opening formed at a rear end of the opening of the housing unit 120, and may receive power from the outside. The light source unit 110 irradiates light to the reflector 121.

For example, the light source unit 110 may be a light emitting device package including a light emitting diode (LED) (not shown).

A light emitting diode (not shown) can convert an electric signal into an infrared ray, a visible ray or a light using the characteristics of a compound semiconductor. The light emitting diode (not shown) may be electrically connected to a lead frame (not shown) of the light emitting device package (not shown).

The light emitting diode (not shown) may be formed by growing a light emitting structure (not shown) on a support substrate (not shown). The light emitting diode (not shown) may form a support substrate (not shown) with silicon carbide (SiC) having high thermal conductivity in order to facilitate heat emission, but is not limited thereto.

The light emitting structure (not shown) may be formed on a supporting substrate (not shown). The light emitting structure (not shown) may be formed by stacking a first semiconductor layer (not shown), an active layer (not shown), and a second semiconductor layer (not shown).

The first semiconductor layer (not shown), the active layer (not shown), and the second semiconductor layer (not shown) may be, for example, metal organic chemical vapor deposition (MOCVD) or chemical vapor deposition (CVD). Deposition), Plasma-Enhanced Chemical Vapor Deposition (PECVD), Molecular Beam Epitaxy (MBE), Hydride Vapor Phase Epitaxy (HVPE), and the like. It is not limited thereto.

In the light emitting structure (not shown), the doping concentration of the conductive dopant in the first semiconductor layer (not shown) and the second semiconductor layer (not shown) may be uniformly or non-uniformly formed, but is not limited thereto. The interlayer structure of the light emitting structure (not shown) may be variously formed, but is not limited thereto.

Since the light emitting diode (not shown) used as the light source unit 110 may form a structure in which heat is discharged to the rear surface, no space is required due to a heat resistance problem, and a heat radiation fin and a heat radiating fan installed on the rear surface of the light emitting diode (not shown) are provided. Since it can be easily changed and implemented by those skilled in the art with the technical configuration of the present invention will be omitted the specific drawings and description.

The light source unit 110 may provide light to the reflecting unit 121, and the reflecting unit 121 may reflect the provided light at a predetermined angle and provide the light to the lens unit 130.

The housing part 120 may include a parabolic surface. For example, the housing part 120 may have an elliptic paraboloid or be formed in a hemispherical shape, but the shape thereof is not limited thereto. The housing portion 120 may have a width different from a bottom surface and a top surface thereof, and a cross section of a side surface thereof may be a parabolic shape, but is not limited thereto. The housing part 120 may be formed with a space therein. In addition, the housing part 120 may have two openings formed at a front end and a rear end thereof, and the two openings may be formed in a straight line with each other. The housing portion 120 may have different diameters from the two openings.

On the other hand, the reflector 121 is a portion formed on the inner surface of the housing portion 120, and serves to reflect the light emitted from the light source unit 110 at a predetermined angle. The reflector 121 may be formed by applying a reflective material, or the reflector 121 may be formed of a metal having high reflectivity, but is not limited thereto. For example, the reflector 121 may be coated with aluminum (Al) on the inner wall, but is not limited thereto.

However, it should be noted that the reflector 121 is not necessarily limited to the application of the aluminum (Al). That is, in addition to applying the aluminum (Al) material for rich reflection of light, the reflector 121 has a hexagon-shaped unit reflection surface 121 ′ with the housing part 120. It may be formed on all of the inner side of the). Each of the plurality of unit reflection surfaces 121 ′ has a longer length and a narrower width toward a rear end central axis of the housing part 120 (for example, a central axis X of the rear end opening of the opening). It is formed to lose.

The function of the plurality of unit reflecting surfaces 121 ′ forming the reflecting unit 121 will be described later.

The plurality of unit reflection surfaces 121 ′ receive light from the light source unit 110. Then, as shown in FIG. 6, the reflector 121 may reflect the light incident from the light source unit 110 toward the lens unit 130 using the unit reflective surface 121 ′.

In the vehicle lamp device according to the preferred embodiment of the present invention, as already disclosed in the prior art, in addition to simply applying the aluminum (Al) material to the reflector 121, a plurality of hexagon (hexagon) shape By providing two unit reflection surfaces 121 ', the following effects are obtained.

That is, as shown in FIG. 6, when the reflective part 121 is smoothly formed, but simply formed by applying aluminum (Al) material, the light irradiated from the light source part 110 corresponds to each corresponding setting area. Only light will be irradiated. In other words, as indicated by a dotted line in FIG. 6, one point inside the reflector 121 has a 1: 1 relationship with unit light (hereinafter, referred to as a “unit reflection area”) of the light source 110 to be irradiated. To achieve. Therefore, when non-deposition of aluminum occurs in the reflector 121, reflection loss is brought about as much as the unit reflection area.

Return loss like this. In the case where the portion of the reflective portion 121 where the aluminum deposition is missing or the portion in which the aluminum deposition is defective is a target for securing a field of view, the target appears dark unlike the original intended (dissatisfaction with light distribution), and the irradiated light shines. There is a problem that the optical performance as a whole, such as a phenomenon that is output as a pattern, the phenomenon that the vehicle lamp device is dark from the outside (dark occurrence), such as the overall degradation.

In order to prevent this, in the vehicle lamp device according to an embodiment of the present invention, the reflector 121 is provided with a plurality of hexagon-shaped unit reflection surface 121 ′. When the plurality of unit reflection surfaces 121 ′ refracts the light emitted from the light source unit 110, the plurality of unit reflection surfaces 121 ′ may reflect diffuse reflection at different angles. The plurality of unit reflective surfaces 121 ′ irradiate light to a wider setting area than in the prior art. Such an effect has the advantage of compensating for the reflection loss of the unit reflection area corresponding to the existing target.

To explain this more easily, as shown in FIG. 6, when a part of the reflector 121 is a unit reflection area, according to the related art, the unit irradiated to the target by the portion indicated by the dotted line of FIG. 6. In the case of a setting area, as in a vehicle lamp device according to an exemplary embodiment of the present invention, when a part of the hexagon-shaped unit reflection surfaces 121 ′ is a unit reflection area, as much as a portion indicated by a solid line in FIG. 6. The unit setting area of is widened. Therefore, in the conventional case, there is an effect of compensating for the unit setting area as much as the loss of reflection lost due to poor aluminum deposition.

The shield 140 may be disposed at the focal point of the lens unit 130. The shield 140 may have the lens unit 130 in the front and the reflector 121 in the rear. In more detail, the shield 140 is disposed between the light source unit 110 and the lens unit 130 to block a part of the light emitted from the light source unit 110.

Here, the plurality of unit reflection surfaces 121 ′ may be formed only up to a position where the shield 140 is disposed.

Both ends of the shield 140 may be disposed at both sides of the vehicle lamp 100.

The shield 140 may be in the form of a bar. The shield 140 may rotate with the body as the rotation axis. In addition, the shield 140 may be inserted into one region of the bar. The shield 140 may have a semicircular shape when viewed from the side. The shield 140 may have a shape in which one side of the cylinder is inserted to form a plane. The shield 140 may protrude one region. The shield 140 may rotate 360 °. One portion of the shield 140 may form a curvature.

As described above, the shield 140 may rotate to allow one vehicle lamp 100 to form various types of beam patterns. In the present invention, the various types of beam patterns are not the main features, and thus detailed descriptions thereof will be omitted.

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.

100: vehicle lamp device 110: light source unit
120: housing portion 121: reflecting portion
121 ': unit reflection surface 130: lens portion
140: shield

Claims (5)

A light source unit including a plurality of light sources which are individually turned on to irradiate light;
A lens unit spaced apart from the front side of the light source unit and configured to transmit irradiated light;
A housing disposed on the inner surface of the light source unit to reflect the light emitted from the light source unit in a direction in which the lens unit is provided;
The reflector includes a vehicle lamp device in which a plurality of hexagon-shaped unit reflection surfaces are formed on all inner surfaces of the housing.
The method according to claim 1,
Each of the plurality of unit reflection surfaces is formed to be longer and narrower in width toward the central axis of the rear end of the housing.
The method according to claim 2,
The plurality of light sources are LED lamps for vehicles.
The method according to claim 2,
The lens unit is a vehicle lamp device consisting of an aspherical lens.
The method according to claim 2,
A shield disposed between the light source unit and the lens unit to block a part of the light irradiated from the light source unit;
And the unit reflecting surface is formed only up to a position where the shield is disposed.
KR1020110113427A 2011-11-02 2011-11-02 A lamp apparatus for vehicles KR20130048538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110113427A KR20130048538A (en) 2011-11-02 2011-11-02 A lamp apparatus for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110113427A KR20130048538A (en) 2011-11-02 2011-11-02 A lamp apparatus for vehicles

Publications (1)

Publication Number Publication Date
KR20130048538A true KR20130048538A (en) 2013-05-10

Family

ID=48659570

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110113427A KR20130048538A (en) 2011-11-02 2011-11-02 A lamp apparatus for vehicles

Country Status (1)

Country Link
KR (1) KR20130048538A (en)

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