Title:
LED BURNING PREVENTION
Document Type and Number:
WIPO Patent Application WO2005077033
Kind Code:
A3
Abstract:
The present invention provides a flame resistant LED construction. The flame resistant LED construction of this embodiment comprises a substrate, one or more LEDs that emits light mounted on the substrate, and an intumescent material adjacent to the LEDs. The positioning of the intumescent material is such that at least a portion of the light emitted from the LEDs is unobstructed. Moreover, a sufficient amount of the intumescent material is in proximity to the LEDs that a flame on the LEDs is extinguished by the expansion of the intumescent material. The present invention also provides an LED construction in which a sufficient amount of the intumescent material is in proximity to the LEDs such that a temperature greater than or equal to about 250 °F causes the intumescent material to expand and form an insulating char which at least partially encompasses the one or more LEDs. Also provide by the invention is a method for making the LED construction of the invention.
Inventors:
HOWE SAMUEL H (US)
Application Number:
PCT/US2005/003986
Publication Date:
December 08, 2005
Filing Date:
February 08, 2005
Export Citation:
Assignee:
BRUCE IND INC (US)
HOWE SAMUEL H (US)
HOWE SAMUEL H (US)
International Classes:
F21K99/00; H05K3/28; (IPC1-7): F21V29/00
Foreign References:
| US5487946A | 1996-01-30 |
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