# US 12,000,570 B2 · Light bulb

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- Number: US 12,000,570 B2
- Document ID: US12000570B2
- Status: Granted
- Kind: B2
- Application number: 18/327,866
- Filed: 2023-06-01
- Published: 2024-03-14
- Granted: 2024-06-04
- Earliest claimed: 2022-09-13
- Assignees: Dongguan Sampo Electronics Co., Ltd.
- Applicants: Dongguan Sampo Electronics Co., Ltd.
- Inventors: Pai-Chuan Yueh
- Web page: https://patentgrep.com/patent/US12000570B2

## CPC

- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21V 19/0055: {by screwing}
- 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)
- F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source
- H05B 45/20: Controlling the colour of the light
- F21V 3/062: {the material being plastics}
- F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements
- F21Y 2113/13: comprising an assembly of point-like light sources
- 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
- 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

A light bulb includes: a bulb holder, a base, a lampshade, and an LED bulb panel. A lower end of the base is connected to the bulb holder. An upper end of the base is connected to the lampshade. The LED bulb panel is disposed on the base. A metal ring is sleeved on the lower end of the base. A first contact and a second contact are disposed on the bulb holder. A first light-emitting circuit and a second light-emitting circuit are disposed on the LED bulb panel. The metal ring is electrically connected to a first end of the first light-emitting circuit and a first end of the second light-emitting circuit. The first contact is electrically connected to a second end of the first light-emitting circuit. The second contact is electrically connected to a second end of the second light-emitting circuit.

## Claims

### Claim 1

A light bulb, comprising:
a bulb holder;
a base;
a lampshade; and
an LED bulb panel;
wherein a lower end of the base is connected to the bulb holder; an upper end of the base is connected to the lampshade; the LED bulb panel is disposed on the base; a metal ring is sleeved on the lower end of the base; a first contact and a second contact are disposed on the bulb holder; a first light-emitting circuit and a second light-emitting circuit are disposed on the LED bulb panel; the metal ring is electrically connected to a first end of the first light-emitting circuit and a first end of the second light-emitting circuit; the first contact is electrically connected to a second end of the first light-emitting circuit, and the second contact is electrically connected to a second end of the second light-emitting circuit; the metal ring is electrically connected to the second contact and the first contact the first light-emitting circuit further comprises a first diode connected to the first contact the second light-emitting circuit further comprises a second diode connected to the second contact.

### Claim 2 (depends on 1)

The light bulb according to claim 1, wherein the first light-emitting circuit comprises a first LED circuit or a plurality of first LED circuits connected in parallel with each other.

### Claim 3 (depends on 2)

The light bulb according to claim 2, wherein the first LED circuit is formed by connecting a plurality of first LED lights in series.

### Claim 4 (depends on 3)

The light bulb according to claim 3, wherein the plurality of first LED lights are white light LED lights.

### Claim 5 (depends on 1)

The light bulb according to claim 1, wherein the second light-emitting circuit comprises a second LED circuit or a plurality of second LED circuits connected in parallel with each other.

### Claim 6 (depends on 5)

The light bulb according to claim 5, wherein the second LED circuit is formed by connecting a plurality of second LED lights in series.

### Claim 7 (depends on 6)

The light bulb according to claim 6, wherein the plurality of second LED lights are yellow light LED lights.

### Claim 8 (depends on 1)

The light bulb according to claim 1, wherein the lampshade is molding component made of PC material.

### Claim 9 (depends on 1)

The light bulb according to claim 1, wherein the bulb holder is selected from an E27 bulb holder, a G125 bulb holder, and a G95 bulb holder.

### Claim 10 (depends on 1)

The light bulb according to claim 1, wherein a plurality of pins are disposed on the metal ring, and a plurality of jacks corresponding to the plurality of pins are defined on the base.

### Claim 11 (depends on 10)

The light bulb according to claim 10, wherein the number of the plurality of pins is four, and the four pins are uniformly distributed on an inner side of the metal ring.