# US 12,000,544 B2 · Omnidirectional light emitting diode filament holder

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,000,544 B2
- Document ID: US12000544B2
- Status: Granted
- Kind: B2
- Application number: 18/062,155
- Filed: 2022-12-06
- Published: 2023-03-30
- Granted: 2024-06-04
- Earliest claimed: 2015-03-18
- Assignees: Feit Electric Company, Inc.
- Applicants: Feit Electric Company, Inc.
- Inventors: Alan Barry Feit
- Web page: https://patentgrep.com/patent/US12000544B2

## CPC

- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21V 23/06: the elements being coupling devices {, e.g. connectors}
- H05B 45/30: Driver circuits
- F21K 9/235: Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps (F21K9/238 takes precedence)
- F21V 3/02: characterised by the shape
- F21W 2121/00: Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21Y 2107/00: Light sources with three-dimensionally disposed light-generating elements
- F21Y 2115/10: Light-emitting diodes [LED]
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

An omnidirectional LED filament holder and lighting device comprising the same comprises a filament tree supporting a plurality of linear LED filaments having a twisted orientation relative to a central support stalk of the filament tree. When arranged within a globe of a lighting device, the omnidirectional LED filament holder provides a lighting device providing omnidirectional light emission usable for general lighting applications while providing a desirable aesthetic for the lighting device.

## Claims

### Claim 1

A decorative Light Emitting Diode (LED) bulb providing omnidirectional light output, the bulb comprising:
a globe having a bottom end and a top end opposite the bottom end; and
a filament tree extending from adjacent the bottom end and comprising a plurality of linear LED filaments,
wherein:
each of the plurality of linear LED filaments has opposing top and bottom ends, and a twisted arrangement around a support stalk, and
each of the plurality of linear LED filaments overlaps a portion of at least two other of the plurality of linear LED filaments when viewed from the top end of the globe.

### Claim 2 (depends on 1)

The decorative LED bulb of claim 1, wherein the filament tree has a diameter smaller than a diameter of the bottom end of the globe.

### Claim 3 (depends on 1)

The decorative LED bulb of claim 1, wherein each of the linear LED filaments emit light in 360 degrees around the circumference of the LED filament.

### Claim 4 (depends on 1)

The decorative LED bulb of claim 1, wherein the top end of each of the plurality of linear LED filaments is positioned a first radial distance from the support stalk and the bottom end of each of the plurality of linear LED filaments is spaced a second radial distance from the support stalk.

### Claim 5 (depends on 4)

The decorative LED bulb of claim 4, wherein the second radial distance is equal to the first radial distance.

### Claim 6 (depends on 1)

The decorative LED bulb of claim 1, wherein the support stalk is embodied as a clear rod extending away from a support base of the filament tree, wherein the support base is rigidly secured to a connector base secured over the bottom end of the globe.

### Claim 7 (depends on 1)

The decorative LED bulb of claim 1, wherein the filament tree further comprises:
lower conductor branches electrically connecting the bottom end of the linear LED filaments with an LED driver circuit; and
upper conductor branches electrically connecting the top end of the linear LED filaments relative to one another.

### Claim 8 (depends on 7)

The decorative LED bulb of claim 7, wherein the plurality of linear LED filaments comprises:
a first grouping of linear LED filaments electrically connected via lower conductor branches and upper conductor branches in parallel; and
a second grouping of linear LED filaments electrically connected via lower conductor branches and upper conductor branches in parallel; and
wherein the first grouping of linear LED filaments is electrically connected in series with the second grouping of linear LED filaments via a portion of the upper conductor branches.

### Claim 9 (depends on 7)

The decorative LED bulb of claim 7, wherein:
the lower conductor branches comprise a plurality of semi-annular conductor hubs each having a plurality of lower arms extending therefrom, wherein the bottom end of each of the linear LED filaments are electrically connected with a corresponding lower arm of the plurality of lower arms and wherein the semi-annular conductor hubs are electrically insulated from one another and each of the semi-annular conductor hubs are in electrical connection with the LED driver circuit; and
the upper conductor branches comprise an annular conductor hub having a plurality of upper arms extending therefrom, wherein the upper end of each of the linear LED filaments are electrically connected with a corresponding upper arm of the plurality of upper arms.

### Claim 10 (depends on 7)

The decorative LED bulb of claim 7, wherein the lower conductor branches and the upper conductor branches have an overall diameter smaller than a diameter of the open bottom end of the globe.

### Claim 11 (depends on 1)

The decorative LED bulb of claim 1, wherein a lower end of a first linear LED filament of the plurality of linear LED filaments is vertically aligned with an upper end of a second linear LED filament of the plurality of linear LED filaments in a plane parallel with an axis of the support stalk.

### Claim 12 (depends on 11)

The decorative LED bulb of claim 11, wherein the plurality of linear LED filaments further comprises a third linear LED filament positioned between the first linear LED filament and the second linear LED filament.

### Claim 13

A decorative Light Emitting Diode (LED) bulb providing omnidirectional light output, the bulb comprising:
a globe having a bottom end and a top end opposite the bottom end; and
a filament tree extending from adjacent the bottom end and comprising:
a support stalk defining an upper portion and a lower portion; and
a plurality of LED filaments each having a central portion positioned between two opposing ends, a first of the two opposing ends being attached adjacent the upper portion of the support stalk, a second of the two opposing ends being attached adjacent the lower portion of the support stalk,
wherein each one of the plurality of LED filaments overlaps a portion of at least one other of the plurality of LED filaments when viewed from the upper portion of the support stalk.

### Claim 14 (depends on 13)

The decorative LED bulb of claim 13, wherein the filament tree has a diameter smaller than a diameter of the bottom end of the globe.

### Claim 15 (depends on 13)

The decorative LED bulb of claim 13, wherein the top end of each of the plurality of linear LED filaments is positioned a first radial distance from the support stalk and the bottom end of each of the plurality of linear LED filaments is spaced a second radial distance from the support stalk.

### Claim 16 (depends on 15)

The decorative LED bulb of claim 15, wherein the second radial distance is equal to the first radial distance.

### Claim 17 (depends on 13)

The decorative LED bulb of claim 13, wherein the support stalk is embodied as a clear rod extending away from a support base of the filament tree, wherein the support base is rigidly secured to a connector base secured over the bottom end of the globe.

### Claim 18 (depends on 13)

The decorative LED bulb of claim 13, wherein the filament tree further comprises:
lower conductor branches electrically connecting the bottom end of the linear LED filaments with an LED driver circuit; and
upper conductor branches electrically connecting the top end of the linear LED filaments relative to one another.

### Claim 19 (depends on 13)

The decorative LED bulb of claim 13, wherein a lower end of a first linear LED filament of the plurality of linear LED filaments is vertically aligned with an upper end of a second linear LED filament of the plurality of linear LED filaments in a plane parallel with an axis of the support stalk.

### Claim 20 (depends on 19)

The decorative LED bulb of claim 19, wherein the plurality of linear LED filaments further comprises a third linear LED filament positioned between the first linear LED filament and the second linear LED filament.