# US 10,480,769 B2 · LED lamp, oven, and microwave oven

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- Number: US 10,480,769 B2
- Document ID: US10480769B2
- Status: Granted
- Kind: B2
- Application number: 15/885,943
- Filed: 2018-02-01
- Published: 2018-06-07
- Granted: 2019-11-19
- Earliest claimed: 2016-07-29
- Assignees: Shenzhen H & T Intelligent Control Co., Ltd.
- Applicants: Shenzhen H&T Intelligent Control Co., Ltd.
- Inventors: Chenyang Luo; Yinan Zhao; Xinhua Jiang; Xixian Zhuang
- Web page: https://patentgrep.com/patent/US10480769B2

## CPC

- F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes
- F21V 17/164: {the parts being subjected to bending, e.g. snap joints}
- F21V 29/10: Arrangement of heat-generating components to reduce thermal damage, e.g. by distancing heat-generating components from other components to be protected
- F21V 29/15: Thermal insulation
- F21V 29/505: of reflectors
- F21V 33/0044: {Household appliances, e.g. washing machines or vacuum cleaners}
- F24C 15/006: {Arrangements for circulation of cooling air}
- F24C 15/008: {Illumination for oven cavities}
- H05B 6/6444: {Aspects relating to lighting devices in the microwave cavity}
- F21V 3/00: Globes; Bowls; Cover glasses (with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506)
- F21V 7/041: {with conical or pyramidal surface}
- F21W 2131/307: for ovens
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- 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 LED lamp includes: a heat sink; a light-emitting module positioned on the heat sink, the light-emitting module including an LED unit positioned on the heat sink, a reflection cup, and a first diffuser covering the reflection cup, the reflection cup encircling the LED unit and defining at least one first ventilation hole; a heat-conducting support positioned on the heat sink and encircling the reflection cup, the heat-conducting support defining at least one second ventilation hole; and a second diffuser secured to and clamped by the heat-conducting support.

## Claims

### Claim 1

An LED lamp, comprising:
a heat sink;
a light-emitting module positioned on the heat sink, the light-emitting module comprising an LED unit positioned on the heat sink, a reflection cup, and a first diffuser covering the reflection cup, the reflection cup encircling the LED unit and defining at least one first ventilation hole;
a heat-conducting support positioned on the heat sink and encircling the reflection cup, the heat-conducting support defining at least one second ventilation hole; and
a second diffuser secured to and clamped by the heat-conducting support;
the first ventilation hole and the second ventilation hole connected, such that heat in a chamber formed by the reflection cup and the first diffuser is dissipated to air outside the LED lamp via the first ventilation hole and the second ventilation hole;
wherein the heat-conducting support protrudes outwards to form at least two ear parts, and the at least two ear parts are connected to the heat sink;
the LED lamp comprises a thermal insulation element positioned on the heat sink, and the heat-conducting support is connected to the thermal insulation element, threaded fasteners run through the ear parts and the thermal insulation element sequentially to fix the heat-conducting support on the heat sink.

### Claim 2 (depends on 1)

The LED lamp of claim 1, wherein the reflection cup is trumpet-shaped and comprises a small opening end and a large opening end which are disposed oppositely, and the first ventilation hole is located in the vicinity of the small opening end.

### Claim 3 (depends on 2)

The LED lamp of claim 2, wherein the large opening end of the reflection cup protrudes outwards to form at least two clamping parts, and the first diffuser is clamped in the at least two clamping parts.

### Claim 4 (depends on 1)

The LED lamp of claim 1, wherein the second diffuser is in threaded connection to the heat-conducting support.

### Claim 5 (depends on 1)

The LED lamp of claim 1, wherein the LED lamp comprises a thermal insulation sealing ring which is sandwiched between the heat-conducting support and the second diffuser.

### Claim 6 (depends on 1)

The LED lamp of claim 1, wherein the LED unit comprises a PCB attached to the heat sink and an LED chip electrically connected to the PCB, and one side of the PCB is attached to the heat sink and is coated with a heat-conducting layer.

### Claim 7

An oven, comprising a box and an LED lamp, wherein the LED lamp is partially embedded in the box; the LED lamp comprising:
a heat sink;
a light-emitting module positioned on the heat sink, the light-emitting module comprising an LED unit positioned on the heat sink, a reflection cup, and a first diffuser covering the reflection cup, the reflection cup encircling the LED unit and defining at least one first ventilation hole;
a heat-conducting support positioned on the heat sink and encircling the reflection cup, the heat-conducting support defining at least one second ventilation hole; and
a second diffuser secured to and clamped by the heat-conducting support;
the first ventilation hole and the second ventilation hole connected, such that heat in a chamber formed by the reflection cup and the first diffuser is dissipated to air outside the LED lamp via the first ventilation hole and the second ventilation hole;
wherein the reflection cup is trumpet-shaped and comprises a small opening end and a large opening end which are disposed oppositely, and the first ventilation hole is located between a wall of the reflection cup and the small opening end;
wherein the heat-conducting support protrudes outwards to form at least two ear parts, and the at least two ear parts are connected to the heat sink;
the LED lamp comprises a thermal insulation element positioned on the heat sink, and the heat-conducting support is connected to the thermal insulation element, threaded fasteners run through the ear parts and the thermal insulation element sequentially to fix the heat-conducting support on the heat sink.

### Claim 8 (depends on 7)

The oven of claim 7, wherein the large opening end of the reflection cup protrudes outwards to form at least two clamping parts, and the first diffuser is clamped in the at least two clamping parts.

### Claim 9 (depends on 7)

The oven of claim 7, wherein the LED lamp comprises a thermal insulation sealing ring which is sandwiched between the heat-conducting support and the second diffuser.

### Claim 10

A microwave oven, comprising a box and an LED lamp, wherein the LED lamp is partially embedded in the box; the LED lamp comprising:
a heat sink;
a light-emitting module positioned on the heat sink, the light-emitting module comprising an LED unit positioned on the heat sink, a reflection cup, and a first diffuser covering the reflection cup, the reflection cup encircling the LED unit and defining at least one first ventilation hole;
a heat-conducting support positioned on the heat sink and encircling the reflection cup, the heat-conducting support defining at least one second ventilation hole; and
a second diffuser secured to and clamped by the heat-conducting support;
the first ventilation hole and the second ventilation hole connected, such that heat in a chamber formed by the reflection cup and the first diffuser is dissipated to air outside the LED lamp via the first ventilation hole and the second ventilation hole;
wherein the heat-conducting support protrudes outwards to form at least two ear parts, and the at least two ear parts are connected to the heat sink;
the LED lamp comprises a thermal insulation element positioned on the heat sink, and the heat-conducting support is connected to the thermal insulation element, threaded fasteners run through the ear parts and the thermal insulation element sequentially to fix the heat-conducting support on the heat sink.

### Claim 11 (depends on 10)

The microwave oven of claim 10, wherein the reflection cup is trumpet-shaped and comprises a small opening end and a large opening end which are disposed oppositely, and the first ventilation hole is located in the vicinity of the small opening end.

### Claim 12 (depends on 11)

The microwave oven of claim 11, wherein the large opening end of the reflection cup protrudes outwards to form at least two clamping parts, and the first diffuser is clamped in the at least two clamping parts.

### Claim 13 (depends on 10)

The microwave oven of claim 10, wherein the LED lamp comprises a thermal insulation sealing ring which is sandwiched between the heat-conducting support and the second diffuser.