Lighting device

• US 8,602,594 B2
• Filed: 04/06/2011
• Issued: 12/10/2013
• Est. Priority Date: 06/23/2010
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jeon, Yongseog, Kim, Yongjin, Lee, Jeongsoo, Cho, Youngjae, Cho, Moonsung
• Primary Examiner(s): Husar, Stephen F
• Assistant Examiner(s): CRANSON JR, JAMES W
• Application Number:
  US13/081,023
• Publication Number:
  US 20110317420A1
• Time in Patent Office: 979 Days
• Field of Search: 362/249.02, 362/294, 362/373
• US Class Current: 362/249.02
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 31/03 with provision for venting for vehicle head lights F21S45/33; for vehicle rear lights F21S41/192
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device may be provided that includes a light member having a light emitting diode (LED) to emit light in a first direction along a first axis, and a housing having a base to support the light member, and having a plurality of cooling fins that extend in a second direction away from the base. A plurality of holes may provide an air flow. Each hole may be provided through the housing from a first side of the base to the second side of the base. Each hole may correspond to an area between two separate ones of the cooling fins.

Claims

1. A lighting device comprising:

a light member having a light emitting diode (LED) to emit light in a first direction along a first axis; and

a housing having a base to support the light member on a first side of the base, and the housing having a plurality of cooling fins that extend in a second direction away from a second side of the base, the base including a plurality of holes to provide an air flow in the second direction away from the second side, wherein each hole extends through the housing from the first side of the base to the second side of the base, and wherein each hole corresponds to an open area between two separate ones of the cooling fins,

wherein a first air flow passage is provided along the first axis from the cooling fins, and a second air flow passage is provided along a second axis from in between different ones of the cooling fins.

2. The lighting device of claim 1, wherein the first air flow passage is provided in a vertical direction from the cooling fins, and the second air flow passage is provided in a horizontal direction from in between different ones of the cooling fins.

3. The lighting device of claim 1, wherein the housing includes a heat pipe provided at least between the base and the plurality of cooling fins.

4. The lighting device of claim 1, wherein an open space is provided between the base and the plurality of cooling fins.

5. The lighting device of claim 1, wherein the plurality of cooling fins are arranged to each extend in the first direction.

6. A lighting device comprising:

a light member having a light emitting diode (LED);

a housing having a base to support the light member on a first side of the base, and having a plurality of cooling fins on a second side of the base; and

a heat pipe provided at least between the base and the plurality of cooling fins,

wherein the base includes a plurality of holes to provide an air flow from the first side of the base to the second side of the base, and

wherein a first air flow passage is provided along a first axis from the cooling fins, and a second air flow passage is provided along a second axis from in between different ones of the cooling fins.

7. The lighting device of claim 6, wherein the heat pipe contacts the second side of the base.

8. The lighting device of claim 6, wherein the plurality of cooling fins are arranged to each extend in a first direction.

9. The lighting device of claim 8, wherein an open space is provided between the plurality of cooling fins and the second side of the base.

10. The lighting device of claim 6, wherein the first air flow passage is provided in a vertical direction from the cooling fins, and the second air flow passage is provided in a horizontal direction from in between different ones of the cooling fins.

11. A lighting device comprising:

a plurality of light modules each having a light emitting diode (LED) on a first side of a base to emit light, and a plurality of cooling fins on a second side of the base; and

a frame to support the plurality of light modules,

wherein the base includes a plurality of holes to provide an air flow from the first side of the base to the second side of the base,

wherein a first air flow passage is provided along a first axis from the cooling fins, and a second air flow passage is provided along a second axis from in between different ones of the cooling fins.

12. The lighting device of claim 11, wherein the light module further includes a heat pipe provided at least between the base and the plurality of cooling fins.

13. The lighting device of claim 12, wherein the heat pipe contacts the second side of the base.

14. The lighting device of claim 11, wherein an open space is provided between the base and the plurality of cooling fins.