LED illuminating device and lighting apparatus employing the same
AssigneeEstec Corporation
InventorsYutaka Yamamoto, Atsushi Yuzuki, Kazuaki Saito
Life of this patent
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Abstract
An LED illuminating device that includes a light-guiding member formed of a translucent material; an LED element formed of at least one diode disposed on one end of the light-guiding member for emitting light therein; a light-emitting region along the length of the light-guiding member; and a plurality of grooves having a rectangular cross-section and formed in the circumferential surface of the light-guiding member at appropriate intervals in the axial direction. The present invention also provides an LED illuminating appliance of various configurations that employ the LED illuminating device as a light source.
Claims15
An LED illuminating device for emitting parallel light rays, said device comprising a rod-shaped light-guiding member made of a translucent material, and an LED element for emitting parallel light rays, with said element having at least one light-emitting diode and being disposed at an end of said light-guiding member, for emitting light rays into said light-guiding member in the longitudinal direction;
- said light-guiding member has a plurality of grooves formed therein and arranged along the axial direction of said light-guiding member, and at a desired distance therebetween for reflecting the lights from said LED element for emitting parallel light rays to the outside of said light-guiding member.
Dependencies are inferred from the claim text.