Light-emitting device and surface light source device using same
AssigneePanasonic Corporation
InventorsTakashi Kuwaharada, Tooru Aoyagi, Tomoyuki Kusano
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Abstract
A light emitting device includes a board 112 and a light-emitting element 110 fixed onto the board and having a light emission region facing upward. The board includes a plurality of projections 125 and 126 spaced from one another and each surrounding the light-emitting element 110. A side surface of each of the projections facing the light-emitting element is a reflective surface 125A, 126A that reflects light emitted sideways from the light emission region. The reflective surfaces are concentric about the light-emitting element. Upper ends of the reflective surfaces are located higher with increasing distance from the light-emitting element.
Claims7
A light emitting device, comprising:
- a board;
- and
- a light-emitting element fixed onto the board and having a light emission region that faces upward, wherein
- the board includes a plurality of projections spaced from one another and each surrounding the light-emitting element,
- a side surface of each of the projections facing the light-emitting element is a reflective surface that reflects light emitted sideways from the light emission region,
- the reflective surfaces of the projections are concentric about the light-emitting element, and
- upper ends of the reflective surfaces are located higher with increasing distance from the light-emitting element.
Dependencies are inferred from the claim text.