LED lamp with LED assembly on a heat sink tower

US9395074B2 · kind B2 · utility

Assignee

• Cree, Inc. · US

Inventors

• Christopher P. Hussell · Cary, US
• John Edmond · Durham, US
• Gerald H. Negley · Durham, US
• Curt Progl · Raleigh, US
• Mark Edmond · Raleigh, US
• Praneet Athalye · Morrisville, US
• Charles M. Swoboda · Morrisville, US
• Antony Paul Van De Ven · Sai Kung, CN
• Paul Kenneth Pickard · Morrisville, US
• Bart P. Reier · Cary, US
• James Michael Lay · Apex, US
• Peter E. Lopez · Cary, US
• Ed Adams · Union City, US

Key dates

• Filing date: Jul 11, 2013
• Grant date: Jul 19, 2016
• Expiry date: May 7, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02B20/30
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A lamp has an optically transmissive enclosure and a base defining a longitudinal axis of the lamp extending from the base to the free end of the enclosure. A heat sink is at least partially located in the enclosure and includes a tower that extends along the longitudinal axis of the lamp. An LED assembly is positioned in the optically transmissive enclosure. The LED assembly comprises a lead frame circuit or a flex circuit where LEDs are attached to the circuits. The lead frame and flex circuit are formed into a three-dimensional shape and are thermally coupled to the tower.