Light emitting diode lamp with light pipes

F - Mech Eng,Light,Heat,Weapons – 21 – S

Patent

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Details

F21S 8/00 (2006.01) F21S 8/10 (2006.01) F21V 7/06 (2006.01) F21V 8/00 (2006.01) F21V 29/00 (2006.01)

Patent

CA 2490599

An LED light source has a housing having a base. A core projects from the base; is substantially cylindrical and is surrounded by tubes. The core and the base are arrayed about a longitudinal axis. A circuit board is the base supports LEDs. Each of the LEDs is positioned with one of the tubes in a one-to-one relationship at one end of the core. A heat sink is positioned is a heat transferring relationship with the circuit board and a first reflector is attached to another end of the core. To direct the light emitted by the LEDs from the source to the reflector, the interior of the tubes can be plated with a highly reflective material. In one embodiment, each of the tubes is fitted with a light guide, each light guide extending from a position immediately above one of the LEDs to a position adjacent the reflector.

Une source lumineuse à diodes électroluminescentes est munie d'un boîtier avec base. Un corps sort de la base; est en grande partie cylindrique, il est entouré de tubes. Le corps et la base rayonnent autour d'un axe longitudinal. Une carte de circuits dans la base supporte les diodes électroluminescentes. Chaque diode est placée avec un des tubes en association à une extrémité du corps. Un dissipateur thermique est placé de sorte à transférer la chaleur, avec la carte de circuits, et un premier réflecteur est fixé à une autre extrémité du corps. Pour diriger la lumière émise par les diodes électroluminescentes, de la source au réflecteur, l'intérieur des tubes peut être plaqué de matière très réfléchissante. Dans une version, chaque tube est équipé d'un conduit de lumière qui va d'un emplacement juste au-dessus de l'une des diodes électroluminescentes, jusqu'à un emplacement contigu au réflecteur.

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