LED LIGHT BULB WITH INTERNAL FLEXIBLE HEATSINK AND CIRCUIT
First Claim
1. An LED light bulb device comprising:
- a bulb body;
a plurality of flexible circuit strips formed to a shape of, and adhered directly to, an interior face of the bulb body, wherein at least one of the flexible circuit strips defines a plurality of stress-relieving notches;
at least one LED mounted to a corresponding one of the flexible circuit strips and electrically connected to a conductive trace formed by the flexible circuit strip;
wherein the at least one LED is arranged to aim inwardly relative to the bulb body;
and further wherein the LED light bulb device is characterized by the absence of a metal heat sink body in direct contact with any of the flexible circuit strips immediately opposite the corresponding LEDs.
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Accused Products
Abstract
An LED light bulb device that includes a bulb body, a plurality of flexible circuit strips, and at least one LED. The flexible circuit strips are formed to a shape of, and adhered directly to, an interior face of the bulb body. At least one of the flexible circuit strips defines a plurality of stress-relieving notches. At least one LED is mounted to a corresponding one of the flexible circuit strips and is electrically connected to a conductive trace formed by the flexible circuit strip. The LEDs are arranged to aim inwardly relative to the bulb body. In some embodiments, a rear surface of each of the flexible circuit strips is adhesively attached to the interior face of the bulb body. In some embodiments, a plurality of LEDs are provided and arranged to provide one or both of uniform light distribution and diverse heat distribution.
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Citations
20 Claims
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1. An LED light bulb device comprising:
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a bulb body; a plurality of flexible circuit strips formed to a shape of, and adhered directly to, an interior face of the bulb body, wherein at least one of the flexible circuit strips defines a plurality of stress-relieving notches; at least one LED mounted to a corresponding one of the flexible circuit strips and electrically connected to a conductive trace formed by the flexible circuit strip; wherein the at least one LED is arranged to aim inwardly relative to the bulb body; and further wherein the LED light bulb device is characterized by the absence of a metal heat sink body in direct contact with any of the flexible circuit strips immediately opposite the corresponding LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of making an LED light bulb device, comprising:
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providing a bulb body that defines an open end opposite a closed end; providing a plurality of flexible circuit strip assemblies, each of the assemblies including a flexible circuit strip, at least one LED, and an adhesive, wherein the flexible circuit strip defines opposing, front and rear surfaces, and further wherein the at least one LED is mounted to the front surface and the adhesive is coated on to the rear surface; inserting the flexible circuit strip assemblies into the open end of the bulb body; locating an expandable member, in a contracted state, between the flexible circuit strip assemblies; expanding the expandable member from the contracted state to an expanded state, causing the flexible circuit strips to attach to an interior face of the bulb body via the corresponding adhesive; contracting the expandable member from the expanded state toward the contracted state; and removing the expandable member from the bulb body. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An LED light bulb device comprising:
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a bulb body; a plurality of flexible circuit strips formed to a shape of, and adhered directly to, an interior face of the bulb body; at least one LED mounted to a corresponding one of the flexible circuit strips and electrically connected to a conductive trace formed by the flexible circuit strip; wherein the at least one LED is arranged to aim inwardly relative to the bulb body; and further wherein the LED light bulb device is characterized by the absence of a metal heat sink body in direct contact with any of the flexible circuit strips immediately opposite the corresponding LEDs; and even further wherein the LED light bulb device provides a light distribution in which at least 90% of luminous intensity measured values varies by no more than 25% from the average of all measured values, wherein luminous intensity is measured about a polar axis of a shape of the bulb body in maximum increments of 22.5°
from 0°
to 180°
about the polar axis and within each vertical plane luminous intensity measurements are taken from 0°
to 135°
at 5°
vertical angle increments.
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Specification