Led lamp and lamp reflector assembly

Details Led lamp and lamp reflector assembly Led lamp and lamp reflector assembly

F - Mech Eng,Light,Heat,Weapons

21

S

F21S 8/00 (2006.01) F21S 8/10 (2006.01)

Patent

CA 2490590

An LED lamp (10) having a substantially concave heat sink (12) having a raised, frusto-conical center (14) surrounded by an outer rim (16). The heat sink (12) is preferably aluminum or other metal and at least the frusto-conical center preferably has a reflective coating. To further aid in heat removal the outer rim (16) can be provided with a plurality of apertures (16a). A side-emitting LED (18) is mounted on the frusto-conical center (14). A cover (26) is fixed to the outer surface (22) and defines a volume (28) between the frusto-conical center (14) and the cover (26). A circuit (30) is located within the volume (28) and an electrical connection (32) provides connection to the LED (18). In another embodiment a cover (26a) is provided with studs (54) and a reflector (42a) is provided with studs (56) that engage barbs (50) formed in a heat sink (12a).

Il s'agit d'une lampe à diodes électroluminescentes (10) ayant un dissipateur thermique en grande partie concave (12) présentant un centre tronconique surélevé (14) entouré d'une couronne (16). Le dissipateur thermique (12) est de préférence en aluminium ou autre métal, et le centre tronconique comporte au moins de préférence un revêtement réfléchissant. Pour faciliter encore la dissipation thermique, la couronne (16) peut présenter de multiples ouvertures (16a). Une DEL latérale (18) est montée sur le centre tronconique (14). Un couvercle (26) est fixé à la surface extérieure (22) et détermine un volume (28) entre le centre tronconique (14) et le couvercle (26). Un circuit (30) se trouve à l'intérieur du volume (28) et une connexion électrique (32) assure le branchement à la DEL (18). Dans une autre version, un couvercle (26a) comporte des goujons (54) et un réflecteur (42a) est muni de colonnettes (56) qui s'engagent dans des picots (50) formés dans un dissipateur thermique (12a).

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