LED heat-dissipating downlight

• US 10,704,779 B1
• Filed: 03/26/2019
• Issued: 07/07/2020
• Est. Priority Date: 03/26/2019
• Status: Active Grant

• Current Assignee: Xiamen Eco Lighting Co. Ltd.
• Original Assignee: Xiamen Eco Lighting Co. Ltd.
• Inventors: Zhang, Qiong Qiao, Zhou, Yuan Lin, Tan, Zheng Qing, Yu, Qi Qing
• Primary Examiner(s): Gauthier, Gerald
• Application Number:
  US16/365,666
• Time in Patent Office: 469 Days
• Field of Search: 362 84, 362147, 362235, 362267, 362294, 362606, 362231, 362244, 362362, 362364, 362368, 362471, 362538, 362609, 381173, 313 46, 315113, 315307
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 23/0435 activated by remote control means
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 7/04 Optical design
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A LED heat-dissipating downlight includes an enclosure body, a light source board, and a driving board. The enclosure body has a side opening. The accommodating chamber is substantially made of a heat dissipation material. The light source board and the driving board are disposed in the accommodating chamber. The light source board is disposed on a bottom of the accommodating chamber, and thermally contacted to the accommodating chamber. The driving board is disposed on the light source board. The driving board has a spacing hole, and the light generated by the light source board passes through the spacing hole to the side opening of the accommodating chamber.

Claims

1. A LED heat-dissipating downlight, comprising:

an enclosure body, substantially made of a heat dissipation material, the enclosure body including an accommodating chamber with a side opening;

a light source board, disposed on a bottom of the accommodating chamber, and having a thermal contact with a side wall of the accommodating chamber;

a driving board, disposed in the accommodating chamber to be on the light source board, the driving board including a spacing hole, wherein the light from the light source board passes through the spacing hole toward the side opening of the accommodating chamber; and

a reflection bowl, which is disposed in the accommodating chamber, and configured to reflect the light from the light source board toward the side opening of the accommodating chamber, wherein the light source board includes an LED light source, and the reflection bowl is a shell structure with a small bottom, wherein the small bottom of the reflection bowl passes through the spacing hole and includes a hole to surround the LED light source.

2. The LED heat-dissipating downlight of claim 1, wherein the reflection bowl is fixed to the driving board.

3. The LED heat-dissipating downlight of claim 1, further comprising a plurality of screws, wherein the driving board is fixed to the bottom of the accommodating chamber by the plurality of screws.

4. The LED heat-dissipating downlight of claim 3, wherein the driving board includes a first terminal, and the light source board includes a second terminal, and the first terminal is electrically connected to the second terminal for electrically connecting the driving board with the light source board, wherein the first and second terminals are a group of the male and female terminals.

5. The LED heat-dissipating downlight of claim 4, wherein the female terminal comprises a fixing receptacle and an elastic electrode, and the fixing receptacle is made of an insulating material and includes a receiving slot, and the elastic electrode is disposed in the receiving slot;

wherein the male terminal includes a metal rod structure, and one end of the male terminal is configured to be inserted into the receiving slot and elastically pressed on the elastic electrode.

6. The LED heat-dissipating downlight of claim 1, further comprising a ring plate, which is substantially made of a transparent material or a translucent material, and the ring plate is disposed to cover the side opening of the enclosure body, to distribute the light from the light source board.

7. The LED heat-dissipating downlight of claim 1, further comprising a fixing member, fixed to the enclosure body and far away from a bottom of the enclosure body.

8. The LED heat-dissipating downlight of claim 7, further comprising a ring plate to cover the side opening of the enclosure body, for distributing the light from the light source board, wherein the fixing member comprises an antenna function, and the ring plate comprises a zooming lens, which is electrically connected to the fixing member for receiving a wireless control signal for controlling the zooming function.

9. The LED heat-dissipating downlight of claim 7, wherein the fixing member comprises an antenna function, and the LED heat-dissipating downlight further comprises a remote switch controller which is electrically connected to the driving board, for turning on or off the light source board to emit the light, wherein the remote switch controller is electrically connected to the fixing member for receiving a wireless control signal.