Lighting device having a plurality of light sources and a light guide
AssigneeLG Innotek Co., Ltd.
InventorsEay Jin Lim, Seung Jong Baek, Kyu Sung Han
Life of this patent
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Abstract
A lighting device may include a plurality of light sources which are disposed on the circumference of a concentric circle, a light guide which surrounds the light sources and is disposed adjacent to the light sources, and a cover member which surrounds the upper surfaces of the light sources and the upper and side surfaces of the light guide. The light guide has a first surface in the light source direction and a second surface in a direction opposite to the light source which have an inclination with respect to the optical axis of the light emitted from the light sources. The cover member has a light transmitting pattern in a light diffusion region facing the upper surface of the light guide.
Claims20
A lighting device comprising:
- a plurality of light sources disposed at a circumference of a concentric circle;
- a light guide disposed adjacent to the light sources while surrounding the light sources;
- and
- a cover member configured to surround upper surfaces of the light sources and upper and side surfaces of the light guide,
- wherein the light guide is configured such that a first surface thereof in a direction of the light sources and a second surface thereof in a direction opposite to the light sources have inclinations with respect to an optical axis of light emitted from the light sources, respectively, and the cover member has a light-transmissive pattern in a light diffusion area thereof facing the upper surface of the light guide,
- the light guide is provided with a plurality of grooves at a central first area thereof such that the plural light sources are inserted into the grooves, respectively, and
- wherein shapes of the plurality of grooves are identical in point symmetry with respect to a center of the concentric circle.
A lighting device comprising:
- a plurality of light sources disposed at a circumference of a concentric circle;
- a light guide disposed adjacent to the light sources while surrounding the light sources;
- and
- a cover member configured to surround upper surfaces of the light sources and upper and side surfaces of the light guide,
- wherein the cover member has an inner side facing the light guide inclined with respect to optical axes of the light emitted from the plurality of light sources.
A lighting device comprising:
- a plurality of light sources disposed at a circumference of a concentric circle;
- a light guide disposed adjacent to the light sources while surrounding the light sources;
- and
- a cover member configured to surround upper surfaces of the light sources and upper and side surfaces of the light guide,
- wherein the light guide is configured such that a first surface thereof in a direction of the light sources and a second surface thereof in a direction opposite to the light sources have inclinations with respect to an optical axis of light emitted from the light sources, respectively, and the cover member has a light-transmissive pattern in a light diffusion area thereof facing the upper surface of the light guide,
- the light guide is provided with a plurality of grooves at a central first area thereof such that the plural light sources are inserted into the grooves, respectively,
- wherein shapes of the plurality of grooves are identical in point symmetry with respect to a center of the concentric circle,
- wherein light exit surfaces of the plural light sources are disposed in a direction opposite to the center of the concentric circle, and
- wherein optical axes of light beams respectively emitted from the plural light sources are arranged to extend from a center of the concentric circle.
Dependencies are inferred from the claim text.