KR20090049474A

KR20090049474A - Led optical source module

Info

Publication number: KR20090049474A
Application number: KR20070115741A
Authority: KR
Inventors: 이병필
Original assignee: 현대모비스 주식회사
Priority date: 2007-11-13
Filing date: 2007-11-13
Publication date: 2009-05-18

Abstract

An invention for an LED light source module is disclosed. The disclosed invention comprises: an LED unit having an LED array for emitting irradiation light; A moving unit for moving the LED unit; A reflection unit for reflecting the irradiation light emitted from the LED unit; And a lens portion for transmitting the irradiation light reflected by the reflecting portion.

According to the present invention, it not only provides the effect of increasing the degree of freedom of the structure and design of the lighting device and moreover the automobile, but also the overall manufacturing cost and production time required for the lighting device and the automobile, and the overall lighting device and the automobile. There is an advantage to save weight.

Automotive, LED, Headlamp

Description

LED light source module {ＬＥ OPTICAL SOURCE MODULE}

The present invention relates to an LED light source module, and more particularly, to an LED light source module provided in the lighting device.

In general, a car is equipped with a lighting device to secure a driver's watch stably even when the ambient light is low while driving. A double head lamp device has a difference in the irradiation angle and the amount of light emitted from the lamp. Therefore, it is divided into a high beam device and a low beam device, and the high beam device and the low beam device are each controlled to be controlled by switching a multifunction switch provided at the side of the steering wheel. .

Incandescent lamps, halogen lamps, and the like have been used as light sources of such headlamps. Recently, light emitting devices such as light emitting diodes (hereinafter referred to as "LEDs") using semiconductors have attracted attention.

The light source module using the LED as a light source has a low power consumption, and can be miniaturized compared to the light source module using an incandescent lamp or a halogen lamp, thereby miniaturizing the entire lighting device.

However, according to the conventional LED light source module as described above, since the price is high, in the case of applying to the head lamp device, if applied to both the high beam device and the low beam device, the manufacturing cost of the head lamp device significantly increases, use It is common to apply only to low beam units, which are more frequent than high beam units.

However, when different light source modules are applied to the high beam device and the low beam device as described above, the difference in the color temperature emitted from the LED and the color temperature emitted from the incandescent lamp or the halogen lamp is large, resulting in a large color heterogeneity. There is a problem. Therefore, there is a need for improvement.

The present invention has been made to improve the problems of the prior art as described above, an object of the present invention is to provide an LED light source module having an improved structure to minimize the heterogeneity of the color when increasing the manufacturing cost and beam pattern switching.

An LED light source module according to the present invention comprises: an LED unit having an LED array for emitting irradiation light; A moving unit which moves the LED unit; A reflector reflecting the irradiation light emitted from the LED unit; And a lens unit for transmitting the irradiation light reflected by the reflecting unit.

Here, the moving unit preferably includes an actuator for reciprocating the LED unit in a horizontal direction.

The LED unit may further include a heat dissipation unit for cooling the LED array.

In addition, the reflector is preferably formed in the shape of a spheroidal ellipsoid.

In addition, the LED light source module is preferably provided in the headlamp device of the vehicle.

According to the LED light source module of the present invention, unlike the conventional method, by changing the angle of reflection by moving the LED unit, it is possible to implement the functions of the low beam device and the high beam device at the same time only one LED unit, low beam device and Compared with a separate high beam device, it requires less installation space and can reduce the parts and manufacturing process required for manufacturing the lighting device.

Accordingly, the LED light source module according to an embodiment of the present invention, not only provides the effect of increasing the degree of freedom of the lighting device and further the structure and design of the vehicle, but also the overall manufacturing cost and It provides the effect of reducing the manufacturing time and the overall weight of the lighting device and the vehicle.

In addition, since the functions of the low beam device and the high beam device are simultaneously implemented with the same LED array, that is, one light source, there is no concern that color heterogeneity may occur due to the difference in color temperature when converting the beam pattern.

Hereinafter, an embodiment of an LED light source module according to the present invention will be described with reference to the accompanying drawings. For convenience of description, the LED light source module provided in the lighting apparatus of the vehicle will be described as an example. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a side cross-sectional view schematically showing an LED light source module according to an embodiment of the present invention.

Referring to FIG. 1, an LED light source module 500 according to an embodiment of the present invention includes an LED unit 100, a reflecting unit 200, a moving unit 300, and a lens unit 400. .

The LED unit 100 includes an LED array 110 and a heat dissipation unit 120.

The LED array 110 includes one or more LEDs for emitting irradiation light and mounted on the chip unit 130. Here, the chip unit 130 includes a plurality of chips (signs omitted) and circuits connected to the LED array 110, which are general to the parties, and thus detailed description thereof will be omitted.

The heat dissipation unit 120 is provided to cool the heat generated on the LED array 110 and the chip unit 130 as the LED array 110 emits light. According to the heat dissipation unit 120, the heat sink 122 is provided under the chip unit 130, and the heat sink 122 is provided with a fan 124 for cooling the inside of the heat sink 122, thereby providing an LED. The array 110 and the chip unit 130 are cooled.

The reflector 200 is provided to reflect the irradiation light emitted from the LED unit 100. For this purpose, the reflecting unit 200 has a reflecting surface (symbol abbreviation) is formed on the surface facing the LED unit 100, the shape of the reflecting surface is a rotary ellipsoid, an elliptic-parabolic compound surface, or a curved surface as these basic surfaces The free curved surface etc. which raised the degree of freedom by operation are used.

The moving unit 300 is provided to move the LED unit 100. The moving unit 300 serves to reciprocate the horizontal line on the virtual line connecting the LED unit 100 between the reflecting unit 200 and the lens unit 400 to be described later. To this end, the moving unit 300 includes an actuator (not shown) that can be operated according to a user's operation, and the actuator may be directly connected to the LED unit 100 or the LED unit through a separate drive transmission unit. It may be connected to the (100).

Meanwhile, in the present embodiment, the moving unit 300 is illustrated as being disposed below the LED unit 100, but is not limited thereto, and the position where the moving unit 300 is disposed is the side of the LED unit 100. As long as the LED unit 100 can be connected to the LED unit 100 so as to move, any position is possible.

The lens unit 400 is provided to transmit the irradiation light reflected by the reflecting unit 200 to the outside, and such a lens unit 400 may include a projection lens.

On the other hand, reference numerals 250 and 450, which are not described, indicate the light blocking unit and the driving module for driving the LED unit, respectively, to block a part of the irradiation light reflected by the reflector 200.

2 and 3 are side cross-sectional views schematically showing an operating state of the LED light source module shown in FIG.

Hereinafter, an operation relationship and an optical structure of the LED light source module according to an embodiment of the present invention will be described with reference to FIGS. 2 and 3. As an example of the LED light source module according to an embodiment of the present invention, an LED light source module provided in a vehicle lighting device, more specifically, a headlamp device of the vehicle will be described as an example. Here, a state before the LED unit moves is referred to as a "first position", and a state where the LED unit is moved toward the lens unit is referred to as a "second position".

As shown in FIG. 2, the LED array 110 of the LED unit 100 positioned at the first position is turned on by the driving module 450 (see FIG. 1). The driving module 450 is electrically connected to the LED unit 100 and serves to turn on the LED array 110 when a signal for turning on the LED array 110 is transmitted.

In this case, the signal may be transmitted from, for example, a corresponding switch or sensor inside the driver's seat. Details of the signal transmission method and its detailed configuration for the driving module 450 are easily realized by those skilled in the art, and thus detailed description thereof will be omitted herein.

When the LED array 110 is turned on by the driving module 450, the LED array 110 emits irradiation light L ₁ . The irradiation light L ₁ emitted in this manner is reflected by the reflector 200. The reflected irradiation light L ₁ is irradiated to the outside through the lens unit 400. The irradiation light L ₁ is distributed by the upper edge of the light shielding part 250 in the downward direction while forming a cut-off line for determining the light and dark boundary of the light distribution pattern.

The irradiation light L ₁ may correspond to light emitted from the low beam device of the conventional headlamp device.

On the other hand, when the user operates the moving unit 300 using a switch (not shown) provided in the driver's seat, as shown in Figure 3, the actuator of the moving unit 300 is operated to the LED unit 100 Will be moved to the second position.

In this state, when the LED array 110 is turned on by the driving module 450, the LED array 110 emits the irradiation light L ₂ at a second position closer to the lens unit 400 than the first position. It emits light. The emitted light L ₂ emitted as described above is reflected by the reflector 200, and is reflected on the reflector 200 while forming a different reflection angle from the emitted light L ₁ emitted at the first position. That is, the irradiated light L ₂ emitted from the second position is reflected to be significantly higher than the irradiated light L ₁ emitted from the first position, and the reflected irradiated light L ₂ is thus reflected by the lens unit 400. Pass through the top of the outside is irradiated. The irradiation light L ₂ is distributed by the upper edge of the light shielding part 250 in the upper direction while forming a cut-off line that determines the contrast boundary of the light distribution pattern.

As such, the irradiation light L ₂ emitted at the second position may correspond to light emitted from the low beam device of the conventional headlamp device.

According to the LED light source module 500 as described above, by changing the angle of reflection by moving the LED unit 100, it is possible to implement the functions of the low beam device and the high beam device at the same time with only one LED unit 100, Compared with the low beam device and the high beam device separately, the installation space is less required, and the parts and manufacturing process required for manufacturing the lighting device can be reduced.

Accordingly, the LED light source module 500 according to an embodiment of the present invention, not only provides the effect of increasing the degree of freedom of the lighting device and further the structure and design of the vehicle, but also the overall device required for manufacturing the lighting device and the vehicle. It reduces the manufacturing cost and manufacturing time, and the overall weight of the lighting device and the vehicle.

In addition, since the same LED array 110, that is, a single light source implements the functions of the low beam device and the high beam device at the same time, when the beam pattern is converted, there is no fear of color heterogeneity due to the difference in color temperature. have.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. In addition, the LED unit provided in the lighting device of the vehicle and the LED light source module having the same, but described as an example, this is merely illustrative, the present invention can be applied to other lighting devices other than the lighting device of the vehicle. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Explanation of symbols on the main parts of the drawings

100: LED unit 110: LED array

120: heat radiating portion 122: heat sink

124 fan 130 chip part

200: reflecting unit 300: moving unit

400: lens unit 500: LED light source module

Claims

An LED unit having an LED array for emitting irradiation light;

A moving unit which moves the LED unit;

A reflector reflecting the irradiation light emitted from the LED unit; And

LED light source module including a lens unit for transmitting the irradiation light reflected by the reflecting unit.

The method of claim 1,

The moving unit, LED light source module characterized in that it comprises an actuator for reciprocating the LED unit in a horizontal direction.

The method of claim 1,

The LED unit, LED light source module characterized in that it further comprises a heat dissipation unit for cooling the LED array.

The method of claim 1,

The reflector is an LED light source module, characterized in that formed in the shape of the ellipsoidal rotation.

The method according to any one of claims 1 to 4,

The LED light source module is an LED light source module, characterized in that provided in the headlamp device of the vehicle.