Thermally conductive lamp reflector

H - Electricity – 01 – J

Patent

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Details

H01J 3/16 (2006.01) C23C 30/00 (2006.01) F21V 7/20 (2006.01) F21V 7/22 (2006.01) H01J 5/16 (2006.01)

Patent

CA 2458881

A thermally conductive lamp reflector (10) is provided that dissipates heat from a light source (20) within the reflector (10). The reflector assembly (10) includes a shell (12) having a metallized layer (16) on its surface. The shell (12) is made from a composition including about 30 % to about 80 % by volume of a base polymer matrix and about 20 % to about 70 % by volume of a thermally conductive filler material. The reflector (10) has a thermal conductivity of greater than 3 W/m~K and preferably greater than 22 W/m~K. The reflectors (10) can be used in automotive headlamps, flashlights, and other lighting fixtures. A method of forming the lamp reflector (10) is also provided.

réflecteur de lampe thermoconducteur (10) dissipant la chaleur produite en lui par une source de lumière (20). L'ensemble réflecteur (10) comprend une coquille (12) dont la surface est recouverte d'une couche métallisée (16). La coquille (12) est réalisée dans une composition renfermant, en volume, de 30 à 80 % environ d'une matrice polymère de base et de 20 à 70 % environ d'un matériau d'apport thermoconducteur. Le réflecteur (10) a une conductivité thermique supérieure à 3 W/m·K et de préférence supérieure à 22 W/m·K. Les réflecteurs (10) peuvent s'utiliser dans des projecteurs pour automobiles, lampes torches et autres appareils d'éclairage. Est également décrit un procédé de fabrication du projecteur de lampe (10).

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