Led lighting device
AssigneeRohm Co., Ltd.
InventorMasaru IGAKI
Life of this patent
Estimating the term…
Abstract
An LED lighting device includes a plurality of LED chips and a pair of side mounting faces. The distance between the side mounting faces becomes smaller from the base side toward the extremity side in the x direction. The side mounting faces face mutually opposite sides in the y direction. Also, the distance between the side mounting faces becomes shorter from the back side toward the front side in the z direction that is perpendicular to both the x direction and the y direction. The plurality of LED chips include LED chips mounted on the pair of side mounting faces. The LED lighting device illuminates an illumination target with a uniform illuminance distribution.
Claims28
An LED lighting device comprising:
- a plurality of LED chips;
- and
- a pair of first side mounting faces configured such that a distance between the first side mounting faces becomes shorter from a base side toward an extremity side in a first direction, that the first side mounting faces face mutually opposite sides in a second direction that is perpendicular to the first direction, and that the distance between the first side mounting faces becomes shorter from a back side toward a front side in a third direction that is perpendicular to both the first and second directions,
- wherein the plurality of LED chips include LED chips belonging to a pair of first side lighting groups mounted on the pair of first side mounting faces.
An LED lighting device comprising:
- a plurality of LED chips;
- a plurality of mounting faces facing different directions;
- and
- a lighting controller,
- wherein the plurality of LED chips are grouped so as to each belong to any one of a plurality of lighting groups respectively mounted on the plurality of mounting faces, and
- the lighting controller adjusts, for each of the lighting groups, an amount of light emitted from the plurality of LED chips.
Dependencies are inferred from the claim text.