STREET LAMP

• US 20110222284A1
• Filed: 10/29/2010
• Published: 09/15/2011
• Est. Priority Date: 07/07/2010
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: KONG, Kyung-Il, Kim, Han Gyoul, Kim, Kwang Soo
• Granted Patent: US 8,235,550 B2
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21S 8/08 with a standard F21S6/00 takes precedence
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• 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 21/10 Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards adjustable mounting F21V21/14; construction of posts not peculiar to use with lighting devices E04H12/00
• CPC Class Codes: F21V 21/108 Arms
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• 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: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed is a street lamp. The street lamp includes:

• • an LED module in which a plurality of LEDs are disposed on one side of a substrate; and
  • a heat radiating body including a convex top surface and a bottom surface disposed on the substrate.

Claims

1. A street lamp comprising:

an LED module including a plurality of LEDs disposed on one side of a substrate; and

a heat radiating body comprising a convex-up top surface and a bottom surface disposed on the substrate.

2. The street lamp of claim 1, wherein heat radiating body comprises a plurality of heat radiating fins being formed on the top surface of the heat radiating body and extending outward from the top surface of the heat radiating body.

3. The street lamp of claim 2, wherein heat radiating body comprises a body comprising the plurality of the heat radiating fins and comprises an edge portion surrounding the outermost of the body, and wherein the edge portion comprises at least one draining hole.

4. The street lamp of claim 1, wherein a thermal pad is disposed between the substrate and the bottom surface of the heat radiating body.

5. A street lamp comprising:

a lamp post comprising a power supply;

a lamp post connector connected to the lamp post and supported by the lamp post;

an LED module including a light emitting device disposed on one side of a substrate and emitting light by receiving electric power from the power supply of the lamp post; and

a heat radiating body comprising a top surface and a bottom surface, wherein the top surface is formed inclined to allow fluid to flow along the edge of the heat radiating body and wherein the bottom surface thermally contacts with the other side of the substrate.

6. The street lamp of claim 5, wherein the heat radiating body comprises a contacting part, and wherein the lamp post connector comes in surface contact with the contacting part of the heat radiating body and receives heat from the heat radiating body.

7. The street lamp of claim 6, wherein the contacting part of the heat radiating body comprises at least one draining hole.

8. The street lamp of claim 5, further comprising a flat cover glass optically coupled to the LED module such that light generated from the LED module is irradiated to the outside, wherein the bottom surface of the heat radiating body comprises a surface contacting part on which the LED modules are mounted, and wherein a contact surface of the surface contacting part is inclined at an acute angle with respect to the cover glass.

9. The street lamp of claim 8, wherein a plurality of the surface contacting parts are formed on the bottom surface of the heat radiating body, and wherein the plurality of the surface contacting parts have the same inclination.

10. The street lamp of claim 5, further comprising a flat cover glass optically coupled to the LED module such that light generated from the LED module is irradiated to the outside, wherein the LED module comprises a plurality of LEDs, and wherein the substrate is inclined at an acute angle with respect to the cover glass.

11. The street lamp of claim 5, wherein heat radiating body comprises a plurality of heat radiating fins being formed on the top surface of the heat radiating body and extending outward from the top surface of the heat radiating body.

12. The street lamp of claim 11, wherein heat radiating body comprises a body comprising the plurality of the heat radiating fins and comprises an edge portion surrounding the outermost of the body, and wherein the edge portion comprises at least one draining hole.

13. The street lamp of claim 5, wherein a thermal pad is interposed between the substrate and the bottom surface of the heat radiating body.

14. The street lamp of claim 11, comprising a heat radiating body cover covering the top surface of the heat radiating body, wherein the heat radiating body cover comprises a plurality of heat radiating openings corresponding to the plurality of heat radiating fins.

16. The street lamp of claim 14, wherein the plurality of the heat radiating openings are arranged in parallel with each other in one direction.

17. The street lamp of claim 5, further comprising a packing being disposed on the bottom surface of the heat radiating body in such a manner as to surround the LED module and preventing fluid from entering the LED module.

18. The street lamp of claim 5, wherein the lamp post comprises:

a base fixed to the ground;

a post portion being fixed and mounted on the base and comprising at least one flat portion; and

a connector extending outward from a top surface of the post portion by a predetermined distance, and being connected to the lamp post connector by being inserted within one end of the lamp post connector.

19. The street lamp of claim 18, wherein the flat portion comprises a receiving portion being formed on the flat portion of the post portion and comprising advertisements attached thereto.

15. The street lamp of claim 15, wherein the heat radiating body cover is disposed at positions higher or lower than positions of peaks of the plurality of the heat radiating fins.

20. A street lamp comprising:

an LED module including a plurality of LEDs disposed on one side of a substrate; and

a heat radiating body comprising a convex-up top surface and a bottom surface, wherein a plurality of heat radiating fins are arranged on the convex-up top surface in the same direction, and wherein the bottom surface is adjacent to the substrate.