Illumination device comprising a substrate plate and a heat...

Details Illumination device comprising a substrate plate and a heat... Illumination device comprising a substrate plate and a heat...

2011-06-07

2011-06-07

Datskovskiy, Michael V (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S679540, C361S703000, C361S710000, C361S719000, C165S080200, C165S080300, C165S104330, C257S712000, C257S713000, C257S717000, C257S720000, C362S218000, C362S294000, C362S373000

Reexamination Certificate

active

07957146

ABSTRACT:
The invention relates to an illumination device (1) comprising at least one preferably ceramic substrate plate (2), at least one luminous element (3) arranged on a front side (A) of the substrate plate (2) in particular at least one light emitting diode (LED) (3), and at least one preferably metallic heat sink (4) connected, in particular adhesively bonded and/or soldered, to a rear side (B) of the substrate plate (2) over a large area, wherein the coefficients of thermal expansion of substrate plate (2) and heat sink (4) differ at least by the factor 1.5, in particular by a factor greater than 2. The heat sink (4) has at least one preferably linear recess (6) on its side facing the rear side (B) of the substrate plate (2).

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