# US 2021/0278075 A1 · Led lighting device

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- Number: US 2021/0278075 A1
- Document ID: US20210278075A1
- Status: Published application
- Kind: A1
- Application number: 17/220,945
- Filed: 2021-04-02
- Published: 2021-09-09
- Earliest claimed: 2019-05-10
- Assignees: Jiaxing Super Lighting Electric Appliance Co., Ltd
- Applicants: Jiaxing Super Lighting Electric Appliance Co., Ltd
- Inventors: MINGBIN WANG; TAO JIANG
- Web page: https://patentgrep.com/patent/US20210278075A1

## CPC

- 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 29/763: {the planes containing the fins or blades having the direction of the light emitting axis}
- F21K 9/23: Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21V 23/009: {the casing being inside the housing of the lighting device}
- F21V 29/773: {the planes containing the fins or blades having the direction of the light emitting axis}
- 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
- 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 LED lighting device comprise a first portion, wherein a lamp cap is disposed thereof, wherein the lamp cap extends in a first direction; a second portion, wherein a case and a power supply are disposed thereof, wherein the power supply is disposed in the case; a third portion. A heat exchange unit and a light emission unit are disposed thereof, the light emission unit and the heat exchange unit are connected and form a thermal conduction path, the light emission unit and the power supply are electrically connected, When the first direction is parallel to the horizontal plane, the light emitting unit of the LED lighting device provides downward light emission when working. The first portion, the second portion and the third portion are arranged sequentially. The LED lighting device is installed horizontally, wherein after the lamp cap is disposed, the moment is F=d1*g*W1+(d2+d3)*g*W2, wherein the moment satisfies the following formula: 1 NM<d1*g*W1+(d2+d3)*g*W2<2 NM.

## Claims

### Claim 1

An LED lighting device, comprising:
a first portion, wherein a lamp cap is disposed thereof, the lamp cap extends in a first direction;
a second portion, wherein a case and a power supply are disposed thereof, the power supply is disposed in the case; and
a third portion, wherein a heat exchange unit and a light emission unit are disposed thereof, the light emission unit and the heat exchange unit are connected and form a thermal conduction path, the light emission unit and the power supply are electrically connected, when the first direction is substantially parallel to the horizontal plane, the light emitting unit of the LED lighting device provides downward light emission;
wherein the first portion, the second portion and the third portion are arranged sequentially along the first direction;
wherein when the LED lighting device is installed horizontally, the moment of the lamp cap is F=d1*g*W1+(d2+d3)*g*W2, and the moment satisfies the following formula: 1 NM<F<2 NM;
wherein d1 is the distance from the first portion to a plane where the center of the second portion is located, d2 is the length of the second portion, d3 is the distance from the second portion to the plane where the center of the third portion is located, W1 is the weight of the second portion, and W2 is the weight of the third portion.

### Claim 2 (depends on 1)

The LED lighting device of claim 1, wherein the moment of the lamp cap satisfies the following formula: 1 NM<dF<1.6 NM.

### Claim 3 (depends on 1)

The LED lighting device of claim 1, wherein the LED lighting device is provided with less than 110 watts of power, and the light emission unit illuminates, enabling the LED lighting device to emit at least 15,000 lumens of luminous flux.

### Claim 4 (depends on 1)

The LED lighting device of claim 1, wherein the LED lighting device is provided with less than 80 watts of power, and the light emission unit illuminates, enabling the LED lighting device to emit at least 12,000 lumens of luminous flux.

### Claim 5 (depends on 1)

The LED lighting device of claim 1, wherein the weight of the second portion accounts for more than 30% of the weight of the LED lighting device.

### Claim 6 (depends on 5)

The LED lighting device of claim 5, wherein the weight of the third portion accounts for less than 60% of the weight of the LED lighting device.

### Claim 7 (depends on 1)

The LED lighting device of claim 1, wherein the length of the second portion accounts for less than 25% of the length of the LED lighting device.

### Claim 8 (depends on 7)

The LED lighting device of claim 7, wherein the length of the third portion accounts for less than 70% of the length of the LED lighting device.

### Claim 9 (depends on 1)

The LED lighting device of claim 1, wherein the length of the LED lighting device is L, the longitudinal distance from the top of the lamp cap to the plane where the center of the LED lighting device is located is A, and L and A satisfy the following formula:
A/L=0.2˜0.45.

### Claim 10 (depends on 1)

The LED lighting device of claim 1, wherein the power supply comprises a thermal element, wherein the thermal element has at least more than 80% of exposed surface area attached with thermal conduction material.

### Claim 11 (depends on 10)

The LED lighting device of claim 10, wherein the thermal element is a resistance, transformer, inductance, IC or transistors.

### Claim 12 (depends on 1)

The LED lighting device of claim 1, wherein the heat exchange unit is an integrated structure comprising a base and cooling fins connected to the base, the cooling fins extends in a second direction, the second direction is vertical to the first direction, and a convection channel is formed between two adjacent cooling fins.

### Claim 13 (depends on 12)

The LED lighting device of claim 12, wherein the weight of the heat exchange unit is arranged substantially evenly in the first direction.

### Claim 14 (depends on 13)

The LED lighting device of claim 13, wherein the cooling fins have a first piece disposed proximate the base and a second piece disposed away from the base, in a height direction, the cross-sectional thickness of either position of the first piece is greater than the cross-sectional thickness of either position of the second piece.

### Claim 15 (depends on 14)

The LED lighting device of claim 14, wherein the cooling fin is divided into two parts with the same height, namely the first part and the second part.

### Claim 16 (depends on 12)

The LED lighting device of claim 12, wherein a coordinate system is established, the bottom of the cooling fins in the thickness direction is as an X axis, the cooling fins in the height direction is as a Y axis, and the thickness and the height of the cooling fins satisfy the following formula: y=ax+K;
wherein y is the height of the cooling fins, a is a constant and negative number, x is the thickness of the cooling fins, and K is a constant.

### Claim 17 (depends on 16)

The LED lighting device of claim 16, wherein the value of a is between −40 and −100, and the value of K is between 80 and 150.

### Claim 18 (depends on 16)

The LED lighting device of claim 16, wherein the value of a is between −50˜−90, and the value of K is between 100˜140.