LED light bulb and LED filament thereof
First Claim
1. An LED light bulb, comprising:
- a bulb shell;
a bulb base connected with the bulb shell; and
an LED filament disposed in the bulb shell, the LED filament comprising;
a plurality of LED chips, electrically connected together;
two conductive electrodes, disposed corresponding to the plurality of LED chips, the conductive electrodes being electrically connected with the plurality of LED chips; and
a flexible light conversion coating, coating on each side of the LED chips and a portion of the conductive electrodes, and exposing a portion of the conductive electrodes, and the flexible light conversion coating comprising an adhesive and a plurality of particles,wherein the plurality of particles comprises phosphors and nanoparticles and a percentage of the particles in the flexible light conversion coating is greater than a percentage of the adhesive in the flexible light conversion coating,wherein the flexible light conversion coating further comprises at least one thermal conduction path formed by at least a part of the phosphors and nanoparticles which are adjacent to and contact one another, the at least one thermal conduction path has an internal end and an external end, the internal end of the at least one thermal conduction path contacts one of the LED chips, and the external end of the at least one thermal conduction path contacts the surface of the flexible light conversion coating away from the LED chips and is exposed from the surface of the flexible light conversion coating.
1 Assignment
0 Petitions
Accused Products
Abstract
An LED filament and an LED light bulb applying the same are disclosed. The LED filament includes LED chips, conductive electrodes disposed corresponding to the LED chips, and a light conversion coating. The LED chips are electrically connected together and the conductive electrodes are electrically connected with the LED chips. The light conversion coating includes an adhesive and a plurality of phosphors. The light conversion coating coats on at least two sides of the LED chips and the conductive electrodes. The light conversion coating exposes a portion of two of the conductive electrodes. Accordingly, the LED filament is capable of emitting light similar to that a point light source does and the LED light bulb may emit omnidirectional light.
15 Citations
20 Claims
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1. An LED light bulb, comprising:
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a bulb shell; a bulb base connected with the bulb shell; and an LED filament disposed in the bulb shell, the LED filament comprising; a plurality of LED chips, electrically connected together; two conductive electrodes, disposed corresponding to the plurality of LED chips, the conductive electrodes being electrically connected with the plurality of LED chips; and a flexible light conversion coating, coating on each side of the LED chips and a portion of the conductive electrodes, and exposing a portion of the conductive electrodes, and the flexible light conversion coating comprising an adhesive and a plurality of particles, wherein the plurality of particles comprises phosphors and nanoparticles and a percentage of the particles in the flexible light conversion coating is greater than a percentage of the adhesive in the flexible light conversion coating, wherein the flexible light conversion coating further comprises at least one thermal conduction path formed by at least a part of the phosphors and nanoparticles which are adjacent to and contact one another, the at least one thermal conduction path has an internal end and an external end, the internal end of the at least one thermal conduction path contacts one of the LED chips, and the external end of the at least one thermal conduction path contacts the surface of the flexible light conversion coating away from the LED chips and is exposed from the surface of the flexible light conversion coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An LED light bulb, comprising:
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a bulb shell; a bulb base connected with the bulb shell; and an LED filament disposed in the bulb shell, the LED filament comprising; a plurality of LED chips, electrically connected together; two conductive electrodes, disposed corresponding to the plurality of LED chips, the conductive electrodes being electrically connected with the plurality of LED chips; and a flexible light conversion coating comprising a top layer and a base layer, the flexible light conversion coating coating on each side of the LED chips and a portion of the conductive electrodes, and exposing a portion of the conductive electrodes, the LED chips interposed between the base layer and the top layer, wherein the top layer comprises a first adhesive and a plurality of first particles and the base layer comprises a second adhesive and a plurality of second particles, the plurality of first particles at least comprises phosphors and a percentage of the plurality of first particles in the top layer is greater than a percentage of the first adhesive in the top layer, wherein the flexible light conversion coating further comprises at least one thermal conduction path formed by at least a part of the first or second particles which are adjacent to and contact one another, the at least one thermal conduction path has an internal end and an external end, the internal end of the at least one thermal conduction path contacts one of the LED chips, and the external end of the at least one thermal conduction path contacts the surface of the flexible light conversion coating away from the LED chips and is exposed from the surface of the flexible light conversion coating. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification