Lighting device

US9029878B2 · kind B2 · utility

Assignee

• OSRAM Opto Semiconductors GmbH · DE

Inventors

• Matthias Sabathil · Regensburg, DE
• Norwin von Malm · Nittendorf, DE
• Lutz Hoeppel · Alteglofsheim, DE
• Stefan Illek · Donaustauf, DE
• Bernd Barchmann · Regensburg, DE
• Patrick Rode · Regensburg, DE

Key dates

• Filing date: Jan 17, 2011
• Grant date: May 12, 2015
• Expiry date: Mar 23, 2031

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/857
• WIPO field: Semiconductors
• WIPO sector: Electrical engineering

Abstract

A lighting device with front carrier, rear carrier and plurality of light-emitting diode chips, which when in operation emits light and releases waste heat, wherein rear carrier is covered at least in selected locations by front carrier, light-emitting diode chips are arranged between rear carrier and front carrier to form array, light-emitting diodes are contacted electrically by rear and/or front carrier and immobilized mechanically by rear carrier and front carrier, front carrier is coupled thermally conductively to light-emitting diode chips and includes light outcoupling face remote from light-emitting diode chips, which light outcoupling face releases some of waste heat released by light-emitting diode chips into surrounding environment, each light-emitting diode chip is actuated with electrical nominal power of 100 mW or less when lighting device is in operation and has light yield of 100 lm/W or more.