Light device

Patent metadata

Field	Value
Publication number	US-2016109098-A1
Application number	US-201514883820-A
Country	US
Kind code	A1
Filing date	Oct 15, 2015
Priority date	Oct 18, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

A light device comprises an elongated light guide ( 2 ) and a LED source ( 1 ) seated in the light guide entry part ( 3 ) for emitting the light beam into the light guide ( 2 ). The entry part of the light guide comprises mutually intersecting parts of at least two ellipsoids ( 11, 21 ) arranged with their main axes ( 14, 24 ) next to each other. The LED light sources are fitted in the first focuses ( 15, 25 ) of the ellipsoids for emission of light beams and their reflection from the elliptic walls ( 13, 23 ) thereof to the second focuses ( 16, 26 ) thereof, laying inside the light guide in different distances from the first focuses. The distance between the first focus ( 15 ) and the second focus ( 16 ) of the first ellipsoid ( 11 ) preferably equals at least 1.5 times the distance between the first focus ( 25 ) and the second focus ( 26 ) of the second ellipsoid ( 21 ).

First claim

1 . A light device of motor vehicles comprising an elongated light guide ( 2 ) and a LED light source ( 1 ) positioned in the entry part ( 3 ) of the light guide ( 2 ) for emitting the light beam into the light guide ( 2 ), wherein the entry part ( 3 ) of the light guide ( 2 ) consists of vertex parts of at least two ellipsoids ( 11 , 21 ) arranged next to each other, wherein the LED light sources ( 1 ) are arranged in first focuses ( 15 , 25 ) of the ellipsoids ( 11 , 21 ) for emission of light rays and their reflection from elliptic walls ( 13 , 23 ) of the ellipsoids ( 11 , 21 ) to second focuses ( 16 , 26 ) of the ellipsoids ( 11 , 21 ) lying inside the light guide ( 2 ), wherein the distance of the second focus ( 16 , 26 ) from the first focus ( 15 , 25 ) of at least one of the ellipsoids ( 11 , 21 ) differs from the distance of the second focus ( 16 , 26 ) from the first focus ( 15 , 25 ) of some of the other ellipsoids ( 11 , 21 ).

2 . The light device according to claim 1 , wherein the ellipsoids ( 11 , 21 ) have a rotational shape and are arranged with their main axes ( 14 , 24 ) in parallel.

3 . The light device according to claim 1 , wherein the distance of the second focus ( 16 ) from the first focus ( 15 ) of some of the ellipsoids ( 11 ) equals at least 1.5 times the distance of the second focus ( 26 ) from the first focus ( 25 ) of some of the other ellipsoids ( 21 ).

4 . The light device according to claim 1 , wherein the ellipsoids ( 11 , 21 ) are shortened at the side of their vertexes by a plane ( 5 ) of a transversal section, which forms faces ( 17 , 27 ) of the ellipsoids ( 11 , 21 ) which are provided with spherical recesses ( 12 , 22 ), whose centers lie in the first focuses ( 15 , 25 ) of the ellipsoids ( 11 , 21 ).

5 . The light device according to claim 1 , wherein the first focuses ( 15 , 25 ) of at least two ellipsoids ( 11 , 21 ) accommodate LED light sources ( 1 ) emitting light beams of different colors.

6 . The light device according to claim 1 , wherein LED light sources ( 1 ) are coupled to a control unit to provide desired output characteristics of the output light spot and output light area, wherein the LED light sources ( 1 ) are alternately or jointly controllable by the control unit, and are configured to provide daily lighting and/or indicator light and/or rear contour light and/or front contour light.

Assignees

• Varroc Lighting Systems Sro

Inventors

• Martoch Jan

Classifications

• F21S43/245

  emitting light from one or more of its major surfaces · CPC title

• B60Q2400/20

  Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp · CPC title

• F21S43/249

  with two or more light sources being coupled into the light guide · CPC title

• F21S43/27

  Attachment thereof · CPC title

• F21S43/237

  rod-shaped · CPC title