Dental light device having an improved heat sink

Details Dental light device having an improved heat sink Dental light device having an improved heat sink

H - Electricity

05

K

H05K 7/20 (2006.01) A61C 13/15 (2006.01) B01J 19/12 (2006.01) C08F 2/48 (2006.01) C09K 5/06 (2006.01) F21V 29/00 (2006.01)

Patent

CA 2572548

The present invention relates to a heat sink material (1200) that can more efficiently remove or divert heat from a light source (1300) or sources with a given weight of heat sink material (1200) when compared to a heat sink made of a solid block of thermally conductive material such as metal. It further relates to a heat sink that can more efficiently remove or divert heat from a curing light device (1000) when a reduced weight of heat sink material is used. The inventive heat sink (1200) has at least one suitable phase change material including organic materials, inorganic materials and combinations thereof. These materials can undergo substantially reversible phase changes, and can typically go through a large, if not an infinite number of cycles without losing their effectiveness.

L'invention concerne un matériau dissipateur thermique permettant d'éliminer ou de détourner de façon plus efficace la chaleur d'une source ou de sources lumineuses d'un poids donné d'un matériau dissipateur thermique par rapport à un dissipateur thermique fabriqué en un bloc solide de matériau thermiquement conducteur, tel que du métal. Elle concerne également un dissipateur de chaleur permettant d'éliminer ou de détourner de façon plus efficace la chaleur d'un dispositif lumineux de séchage lorsqu'un poids réduit de matériau dissipateur de chaleur est utilisé. Le dissipateur de chaleur de l'invention comprend au moins un matériau de changement de phase approprié, tel que des matériaux organiques, des matériaux minéraux et des combinaisons de ceux-ci. Ces matériaux peuvent être soumis à des changements de phase sensiblement réversibles, et peuvent généralement traverser un grand nombre de cycles pour ne pas dire un nombre de cycles infinis, sans perdre leur efficacité.

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