IP Library Granted Patent US 9,146,031
Granted Patent B2
US 9,146,031 · App. 13/862,337 · Granted Sep 29, 2015

Lighting module

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Quick Facts
Patent No.
US 9,146,031
App. No.
13/862,337
Granted
Sep 29, 2015
Kind
B2
Abstract

A street light may include a pole and a head attached to the pole. The head may include a lighting module. The lighting module may include a light-emitting device configured to emit light, a thermal interface configured to conduct heat away from the light-emitting device, an optical element configured to transmit the emitted light in a light distribution pattern on an area located a distance away from the lighting module, and a reflective surface configured to redirect a portion of the light transmitted by the optical element.

Claims (24)

1. A lighting module, comprising:

a light-emitting device configured to emit light;

a thermal interface configured to conduct heat away from the light-emitting device;

an optical element configured to transmit the emitted light in a light distribution pattern on an area located a distance away from the lighting module;

first and second fins disposed in concentric alignment with the light-emitting device, wherein the second fin surrounds the first fin, and wherein the second fin is configured to dissipate heat generated by the light-emitting device; and

a reflective surface configured to redirect a portion of the light transmitted by the optical element, wherein the reflective surface is provided on an inner surface of the first fin.

2. The lighting module of claim 1 , wherein the reflective surface is further configured to redirect a portion of the light emitted by the light-emitting device.

3. The lighting module of claim 1 , wherein the portion of transmitted light redirected by the reflective surface modifies the light distribution pattern.

4. The lighting module of claim 1 , wherein the reflective surface is further configured to increase an amount of light transmitted to a portion of the light distribution pattern.

5. The lighting module of claim 1 , wherein the reflective surface is further configured to decrease an amount of light transmitted to a portion of the light distribution pattern.

6. The lighting module of claim 1 , wherein the reflective surface is further configured to modify a coverage area of the light distribution pattern.

7. The lighting module of claim 1 , wherein at least one of the first and second fins is thermally coupled to the thermal interface.

8. The lighting module of claim 7 , wherein the at least one of the first and second fins is also thermally coupled to a heat sink.

9. The lighting module of claim 8 , wherein the at least one of the first and second fins comprises a first passage that is configured to allow an airflow through the at least one of the first and second fins.

10. The lighting module of claim 9 , wherein the first passage is connected to a second passage that is configured to allow an airflow through the thermal interface.

11. The lighting module of claim 9 , wherein the first passage is connected to a third passage that is configured to allow an airflow through a heat sink.

12. The lighting module of claim 11 , wherein the thermal interface is thermally coupled to the heat sink.

13. The lighting module of claim 8 , wherein the first fin has a frustoconical shape, a first end corresponding to a first radius, and a second end corresponding to a second radius, and wherein the first radius is smaller than the second radius.

14. The lighting module of claim 13 , further comprising a lens attached at the second end, wherein the lens is configured to protect the light-emitting device and the optical element from environmental conditions.

15. The lighting module of claim 13 , wherein the first end is attached to the thermal interface.

16. The lighting module of claim 13 , wherein the first end is attached to the heat sink.

17. The lighting module of claim 16 , wherein the thermal interface is further configured to be removably fastened to the heat sink.

18. The lighting module of claim 16 , wherein the heat sink is mounted in a head of a street light.

19. The lighting module of claim 1 , wherein the light-emitting device comprises a plurality of light-emitting diodes.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 28, 2013
From: SCOTT, KEITH; FARMER, TODD
To: BRIDGELUX, INC.
Reel/Frame 030708/0120 →