Utility lamp
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Accused Products
Abstract
A utility lamp (1) comprises a curved reflector (2) having a spherically curved surface. An array of LEDs (3) is arranged in an electrical circuit on a thin substrate mounted via thermally conductive epoxy on a thermally-conductive base (4), which in turn forms an integral part of the reflector (2). The LEDs are mounted for efficient heat transfer by conduction to the reflector (2). The reflector (2) thus operates as both a light reflector and as a radiative heat sink. The heat radiating properties of the reflector are enhanced by integral fins (7) extending in the radial direction around the periphery of the reflector (2). The reflector (2) is of integral aluminium construction.
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Citations
32 Claims
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1-17. -17. (canceled)
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18. A utility lamp comprising:
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a group of at least one light emitting diode;
a reflector comprising;
a base, a wall having an internal light-reflecting surface, and thermal dissipation fins the diode group being mounted on a thermally-conductive circuit board which is secured to the reflector base;
some emitted light reflects from the internal surface of the reflector wall, and heat from the diode group is conducted into the reflector, and the reflector radiates this heat from its exposed surfaces;
wherein the reflector is of greater cross-sectional area at the base than at the wall; and
wherein the fins extend from an external surface of the reflector wall, opposed to the internal light-reflecting surface. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification