LED light bulbs
First Claim
Patent Images
1. A light emitting diode (LED) light bulb comprising:
- a LED light engine including a substrate having patterned thereon at least one electrical trace, wherein the substrate includes at least one bend to form multiple non-coplanar LED support surface portions to which multiple LEDs are mounted;
a base element including multiple electrical contacts arranged near a base end;
a light-transmissive cover defining an interior volume in which the multiple LEDs of the LED light engine are contained;
an externally accessible heatsink associated with the base element and arranged between the base end and the cover;
wherein the LED light engine is mated with the base element to make mechanical, electrical, and thermal connections to the base element.
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Abstract
LED light bulbs include openings in base or cover portions, and optional forced flow elements, for convective cooling. Thermally conductive optically transmissive material may be used for cooling, optionally including fins. A LED light engine may be fabricated from a substrate via planar fabrication techniques and shaped to form a substantially rigid upright support structure. Mechanical, electrical, and thermal connections may be made between a LED light engine and a LED light bulb.
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Citations
22 Claims
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1. A light emitting diode (LED) light bulb comprising:
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a LED light engine including a substrate having patterned thereon at least one electrical trace, wherein the substrate includes at least one bend to form multiple non-coplanar LED support surface portions to which multiple LEDs are mounted; a base element including multiple electrical contacts arranged near a base end; a light-transmissive cover defining an interior volume in which the multiple LEDs of the LED light engine are contained; an externally accessible heatsink associated with the base element and arranged between the base end and the cover; wherein the LED light engine is mated with the base element to make mechanical, electrical, and thermal connections to the base element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A light emitting diode (LED) light bulb comprising:
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a cover defining an interior volume, wherein at least a portion of the cover comprising a material having visible spectrum transmittance of least about 80% and a thermal conductivity of at least 25 W/(m·
°
K) at about 25°
C.; anda substrate supporting at least one LED, wherein the at least one LED and at least a portion of the substrate are disposed within the interior volume. - View Dependent Claims (21, 22)
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Specification