KR20170046205A

KR20170046205A - Light source module of led head lamp for vehicle

Info

Publication number: KR20170046205A
Application number: KR1020150145749A
Authority: KR
Inventors: 유진욱
Original assignee: 현대자동차주식회사
Priority date: 2015-10-20
Filing date: 2015-10-20
Publication date: 2017-05-02

Abstract

The present invention relates to a light source module of an LED head lamp for a vehicle. A red LED (11), a green LED (12), and a blue LED (13) constitute a unit cell (100) sequentially arranged one by one in forward and backward directions of the vehicle and the unit cells (100) are arranged in left and right directions of the vehicle to form a plurality of rows. A plurality of red LEDs (11), green LEDs (12) and blue LEDs (13) are arranged in a matrix form and are individually turned on or off by the control of a PCB (20). Accordingly, the present invention can change a beam color and a beam pattern and reduce the size of the light source module.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light source module for an automotive LED headlamp,

[0001] The present invention relates to a light source module for an automotive LED headlamp, and more particularly to a light source module for a vehicle LED headlamp in which a plurality of LEDs having red (Rde), green, and blue colors are matched to a plurality of rows and columns, A light source module for a vehicle LED headlamp for a vehicle.

Generally, a headlamp (headlamp) of a vehicle is a lamp that illuminates the front of a driver in order to secure a front view of a driver. Usually, a halogen lamp is usually used. However, recently, a light emitting diode ) Is increasingly used.

A light source module of a conventional LED headlamp includes an LED light source for emitting light and a PCB (Printed Circuit Board) for controlling supply of current to the LED light source, And an inner lens and an outer lens.

However, the light source module of the conventional LED headlamp is composed of a module which individually emits light according to a beam pattern irradiated on a road surface, that is, a high beam or a low beam, The light source module has a disadvantage in that the structure is complicated, the cost is high, and the size of the light source module becomes large.

It should be understood that the foregoing description of the background art is merely for the purpose of promoting an understanding of the background of the present invention and is not to be construed as an admission that the prior art is known to those skilled in the art.

Korean Patent Publication No. 10-2011-0063211

In the present invention, a plurality of LEDs having red (Rde), green (Green), and blue (Blue) colors are aligned with a plurality of rows and columns to arrange LED light sources in a matrix form. And the LEDs are individually turned off through the control of the PCB, so that the beam color and the beam pattern irradiated to the road surface can be varied according to the driving situation of the vehicle, thereby simplifying the configuration, And it is an object of the present invention to provide a light source module of an LED headlamp for a vehicle which can greatly reduce the size of a module.

According to an aspect of the present invention, there is provided a light source module for a vehicle LED head lamp including an LED light source for emitting light and a PCB for controlling supply of current to the LED light source, LED, green LED and blue LED are formed of a combination of unit cells sequentially arranged one by one in the front-rear direction of the vehicle.

The unit cells are arranged in a plurality of rows along a left and right direction of the vehicle, and a plurality of red LEDs, green LEDs, and blue LEDs are arranged in a matrix shape in accordance with a plurality of rows and columns.

The LED light source is configured such that LEDs of different colors are arranged adjacent to the front-rear direction and the left-right direction of the vehicle on the basis of any one of a plurality of red LEDs, a green LED, and a blue LED.

The red LED, the green LED and the blue LED constituting the unit cell are arranged in a total of three rows along the front-rear direction of the vehicle; And the unit cells are arranged in five rows in the left-right direction of the vehicle.

When the entire LED light source is turned off by the control of the PCB, the head lamp is turned off; When the entire LED light source is turned on by the control of the PCB, a beam pattern of the upward light is realized; Only three LEDs positioned at the foremost position are turned on by the control of the PCB, and when the remaining two rows of LEDs and one row of LEDs are turned off, a beam pattern of a low beam is realized.

When only the blue LED is turned off and the red LED and the green LED are turned on in the unit cell at the leftmost outermost unit cell or the outermost unit cell at the right end of the LED light source and the red LED and the green LED are repeatedly turned off, And a signal lamp is implemented.

And a braking lamp of a red color is realized when only the red LED is turned on by the control of the PCB.

According to the light source module of the LED headlamp for a vehicle according to the present invention, the red LED, the green LED and the blue LED form a unit cell sequentially arranged one by one in the front-rear direction of the vehicle, And a plurality of red LEDs, green LEDs, and blue LEDs are arranged in a matrix form and are controlled so as to be individually turned off by the PCB. Through this, It is possible to vary the beam pattern, simplify the components constituting the light source module, and further reduce the cost and size of the light source module.

1 is a view for explaining a light source module of an LED headlamp according to the present invention,
2 to 4 are views for explaining a beam pattern of a vehicle implemented by a light source module of an LED headlamp according to the present invention.

Hereinafter, a light source module of a vehicle lamp head lamp according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

A light source module of an automotive LED head lamp according to the present invention includes an LED light source 10 for emitting light as shown in FIGS. 1 to 4; And a PCB (20) for controlling supply of current to the LED light source (10), wherein the LED light source (10) comprises a red LED (11), a green LED And the blue LEDs 13 are composed of a combination of the unit cells 100 sequentially arranged one by one in the front-rear direction of the vehicle.

That is, the unit cells 100 of the LED light source 10 according to the present invention are arranged in a plurality of rows along the left and right direction of the vehicle, and a plurality of red LEDs 11, green LEDs 12, And has a structure arranged in a matrix form in accordance with rows and columns.

For example, when the red LED 11, the green LED 12, and the blue LED 13 are both turned on, a white color beam is realized by a combination of colors, and the red LED 11 and the green LED 12 Is turned on and the blue LED 13 is turned off, a beam of yellow color is realized.

Accordingly, the light source module according to the present invention includes a plurality of red LEDs 11, a green LED 12, and a blue LED 13 arranged in a matrix in a manner corresponding to a plurality of rows and columns, The green LED 12 and the blue LED 13 are controlled so that the PCB 20 is individually turned off so that the beam color and the beam pattern irradiated to the road surface can be varied according to the driving situation of the vehicle, Accordingly, it is possible to simplify the components constituting the light source module, further reduce the cost, and greatly reduce the size of the light source module.

The LED light source 10 according to an embodiment of the present invention includes a plurality of red LEDs 11, a plurality of LEDs 12, and a plurality of LEDs 13, LEDs are arranged adjacent to each other.

That is, even if any one row of the red LED 11, the green LED 12, and the blue LED 13 arranged in a matrix form in accordance with a plurality of rows and columns is turned off or all the rows are turned off, The LEDs in the remaining columns or the LEDs in the remaining lit rows must be able to implement a white-colored beam according to the combination of colors.

The red LED 11, the green LED 12 and the blue LED 13 constituting the unit cell 100 according to the present invention are arranged in a total of three rows along the longitudinal direction of the vehicle, 100 are arranged in a total of five rows in the left and right direction of the vehicle, and the LEDs of the remaining columns that are lit or the LEDs of the remaining lit rows that are lit even if any one row is turned off or all of the columns are turned off So that a white color beam can be realized according to a combination of colors.

When the entire LED light source 10 is turned off (L1) as shown in FIG. 2 (A) under the control of the PCB 20 according to the present invention, the head lamp is turned off, When the entire LED light source 10 is turned on (L2), the upward beam pattern HB is implemented. Only the three LEDs located at the foremost position are lit (L2) as shown in FIG. 2 (C) When one row of LEDs is turned off (L1), a beam pattern LB of a low beam is realized.

3, only the blue LED 13 is turned off in the outermost unit cell 100 on the left side of the LED light source 10, and the red LED 11 and the green LED 12 are turned on, When the LED 11 and the green LED 12 are turned on and off repeatedly, a turn signal lamp TL of a yellow color in the left turning direction is realized. By the unit cells 100 excluding the leftmost outermost unit cell 100, The pattern HB is also implemented at the same time.

Although not shown in the figure, only the blue LED 13 is turned off in the unit cell 100 at the outermost right side of the LED light source 10, and the remaining red LED 11 and green LED 12 are turned on When the red LED 11 and the green LED 12 are repeatedly turned off, a turn signal lamp TL of a right turning direction of yellow color is implemented. By the unit cells other than the rightmost outermost unit cell 100, The beam pattern HB is also implemented at the same time.

4, if only the red LED 11 is turned on under the control of the PCB 20 in the unit cell 100 of the second row, the third row and the fourth row, the red color braking light BL is implemented, When all the LEDs constituting the unit cell are lit, the beam pattern HB of the upward light is simultaneously realized.

As described above, the light source module according to the present invention includes the red LED 11, the green LED 12, and the blue LED 13 as unit cells 100 arranged one by one in the front-rear direction of the vehicle, The unit cells 100 are arranged in a plurality of rows in the lateral direction of the vehicle and a plurality of red LEDs 11, green LEDs 12 and blue LEDs 13 are arranged in a matrix And the plurality of red LEDs 11, the green LEDs 12 and the blue LEDs 13 are controlled to be individually turned off by the PCB 20 so that the beam colors irradiated to the road surface in accordance with the running condition of the vehicle It is possible to simplify the components constituting the light source module, thereby further reducing the cost and size of the light source module.

While the present invention has been particularly shown and described with reference to specific embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the following claims It will be apparent to those of ordinary skill in the art.

10 - Light source module 11 - Red LED
12 - Green LED 13 - Blue LED
20 - PCB 100 - Unit cell

Claims

1. A light source module for an automotive LED headlamp comprising: an LED light source for illuminating light; and a PCB for controlling current supply to the LED light source,
Wherein the LED light source comprises a combination of red LEDs, green LEDs, and blue LEDs sequentially arranged one by one in the front-rear direction of the vehicle.

The method according to claim 1,
Wherein the unit cells are arranged in a plurality of rows along a left and right direction of the vehicle, and a plurality of red LEDs, green LEDs, and blue LEDs are arranged in a matrix form corresponding to a plurality of rows and columns.

The method of claim 2,
Wherein the LED light source is configured such that LEDs of different colors are arranged adjacent to each other in the front-rear direction and the left-right direction of the vehicle based on any one of a plurality of red LEDs, green LEDs, and blue LEDs. module.

The method of claim 3,
The red LED, the green LED and the blue LED constituting the unit cell are arranged in a total of three rows along the front-rear direction of the vehicle;
Wherein the unit cells are arranged in a total of five rows in the lateral direction of the vehicle.

The method of claim 4,
When the entire LED light source is turned off by the control of the PCB, the head lamp is turned off;
When the entire LED light source is turned on by the control of the PCB, a beam pattern of the upward light is realized;
Wherein a light beam pattern of a low beam is realized when only three LEDs positioned at the foremost position are turned on by the control of the PCB and the remaining two rows of LEDs and one row of LEDs are turned off.

The method of claim 4,
When only the blue LED is turned off and the red LED and the green LED are turned on in the unit cell at the leftmost outermost unit cell or the outermost unit cell at the right end of the LED light source and the red LED and the green LED are repeatedly turned off, And a signal lamp is implemented on the light source module.

The method of claim 4,
And a braking lamp of a red color is implemented when only the red LED is turned on by the control of the PCB.